Jiaozuo brake

Electromagnetic drum brake ZWZA-400; ZWZA-500; ZWZA-600; ZWZA-700; ZWZA-800;ZWZ2 series DC electromagnetic block brake:ZWZ2-160/100; ZWZ2-160/200; ZWZ2-200/100; ZWZ2-200/200; ZWZ2-200/300; ZWZ2-250/200; ZWZ2-250/300; ZWZ2-315/200; ZWZ2-315/300ZWZ3A series DC electromagnetic block brake:ZWZ3A-400/400; ZWZ3A-400/500; ZWZ3A-500/400; ZWZ3A-500/500; ZWZ3A-500/600; ZWZ3A-630/500; ZWZ3A-630/600; ZWZ3A-630/700; ZWZ3A-710/600; ZWZ3A-710/700; ZWZ3A-710/800; ZWZ3A-800/700; Complete diagram of ZWZ3A-800/800 electromagnetTJ2 series AC electromagnetic block brake:TJ2-100/100; TJ2-200/100; TJ2-200/200; TJ2-300/200; TJ2-300/300JZ series energy-saving electromagnetic block brake:JZ-100; JZ-200; JZ-300; JZ-400; JZ-500; JZ-600MW series energy-saving AC electromagnetic block brake:MW-100; MW-160; MW-200; MW-250; MW-315; MW-400; MW-500; MW-630; MW-710; MW-800MWZ series energy-saving DC electromagnetic block brake:MWZ-100; MWZ-160; MWZ-200; MWZ-250; MWZ-315; MWZ-400; MWZ-500; MWZ-630; MWZ-710; MWZ-800The installation dimensions and braking torque parameters and technical requirements of the brake comply with the JB/T7685-2006 standard.Main features: safe and reliable use; High action frequency, energy-saving; Green and environmentally friendly, asbestos free liner; Equal distance device to prevent the brake pad from floating against the brake wheel; Equipped with lifting hooks for easy maintenance.Usage conditions:Environmental temperature: -25 ℃ -40 ℃AC 380V/50Hz power supply; The MWZ product is a DC power supply with a rated voltage of 220V.The altitude of the location of use shall not exceed 2000m.The relative humidity of the air at the place of use shall not exceed 90%.There should be no flammable, explosive, corrosive or insulating gases or conductive dust around the brake.Outdoor rain and snow erosion or corrosive gases and media should be corrosion-resistant products.The installation dimensions and braking torque parameters and technical requirements of the brake comply with the JB/T7685-2006 standard.Main features: safe and reliable use; High action frequency, energy-saving; Green and environmentally friendly, asbestos free liner; Equal distance device to prevent the brake pad from floating against the brake wheel; Equipped with lifting hooks for easy maintenance.Usage conditions:Environmental temperature: -25 ℃ -40 ℃AC 380V/50Hz power supply; The MWZ product is a DC power supply with a rated voltage of 220V.The altitude of the location of use shall not exceed 2000m.The relative humidity of the air at the place of use shall not exceed 90%.

time：2020-12-22

The product is a DC power supply with a rated voltage of 220V. The altitude of the location of use shall not exceed 1000m. The relative humidity of the air at the place of use shall not exceed 90%. There must be no flammable, explosive, corrosive gases or conductive dust around the brake that can corrode metals and damage insulators.ZWZA-400; ZWZA-500; ZWZA-600; ZWZA-700; ZWZA-800;ZWZ2 series DC electromagnetic block brake:ZWZ2-160/100; ZWZ2-160/200; ZWZ2-200/100; ZWZ2-200/200; ZWZ2-200/300; ZWZ2-250/200; ZWZ2-250/300; ZWZ2-315/200; ZWZ2-315/300ZWZ3A series DC electromagnetic block brake:ZWZ3A-400/400; ZWZ3A-400/500; ZWZ3A-500/400; ZWZ3A-500/500; ZWZ3A-500/600; ZWZ3A-630/500; ZWZ3A-630/600; ZWZ3A-630/700; ZWZ3A-710/600; ZWZ3A-710/700; ZWZ3A-710/800; ZWZ3A-800/700; ZWZ3A-800/800The installation dimensions and braking torque parameters and technical requirements of the brake comply with the JB/T7685-2006 standard.Various electromagnetic diagrams such as JZMain features: safe and reliable use; High action frequency, energy-saving; Green and environmentally friendly, asbestos free liner; Equal distance device to prevent the brake pad from floating against the brake wheel; Equipped with lifting hooks for easy maintenance.Usage conditions:Environmental temperature: -25 ℃ -40 ℃AC 380V/50Hz power supply; The MWZ product is a DC power supply with a rated voltage of 220V.The altitude of the location of use shall not exceed 2000m.The relative humidity of the air at the place of use shall not exceed 90%.There should be no flammable, explosive, corrosive or insulating gases or conductive dust around the brake.Outdoor rain and snow erosion or corrosive gases and media should be corrosion-resistant products.The installation dimensions and braking torque parameters and technical requirements of the brake comply with the JB/T7685-2006 standard.Main features: safe and reliable use; High action frequency, energy-saving; Green and environmentally friendly, asbestos free liner; Equal distance device to prevent the brake pad from floating against the brake wheel; Equipped with lifting hooks for easy maintenance.TJ2 series AC electromagnetic block brake:TJ2-100/100; TJ2-200/100; TJ2-200/200; TJ2-300/200; TJ2-300/300JZ series energy-saving electromagnetic block brake:JZ-100; JZ-200; JZ-300; JZ-400; JZ-500; JZ-600MW series energy-saving AC electromagnetic block brake:MW-100; MW-160; MW-200; MW-250; MW-315; MW-400; MW-500; MW-630; MW-710; MW-800MWZ series energy-saving DC electromagnetic block brake:MWZ-100; MWZ-160; MWZ-200; MWZ-250; MWZ-315; MWZ-400; MWZ-500; MWZ-630; MWZ-710; MWZ-800

time：2020-12-22

seventeenManufacturer price of BEd-30/5 explosion-proof electric hydraulic thruster for coal mines, cranes, and mining machinery. Manufacturer price of BEd-80/6 explosion-proof electric hydraulic thrusterBEd-121/12, BEd-201/12, BEd-301/12Manufacturer's prices for BEd30/5, BEd50/6, BEd80/6, BEd80/12 explosion-proof electric hydraulic thrustersManufacturer's prices for BEd121/6, BEd201/6, BEd301/6, BEd30/5 explosion-proof electric hydraulic thrustersManufacturer prices for BEd121/12, BEd201/12, BEd301/12 explosion-proof electric hydraulic thrustersManufacturer's prices for BEd-30/5, BEd-50/6, BEd-80/6, BEd-80/12 explosion-proof electric hydraulic thrustersManufacturer's prices for BEd-121/6, BEd-201/6, BEd-301/6, BEd-30/5 explosion-proof electric hydraulic thrustersManufacturer prices for BEd-121/12, BEd-201/12, BEd-301/12 explosion-proof electric hydraulic thrustersThe BED series explosion-proof electric hydraulic thrusters are mainly used as driving devices for electric hydraulic drum brakes, and can also achieve rapid movements such as reciprocating, circular, and swinging through levers. They are suitable for industries such as lifting, transportation, metallurgy, mining, ports, and construction; Its explosion-proof performance complies with the provisions of GB3836.2-2000 "Explosion proof Electrical Equipment and Explosion proof Electrical Equipment for Explosive Atmospheres" d ". The explosion-proof signs are" dI "and" DIICT4 ", which are respectively used in coal mines and IIA, IIB, IIC (Class I, Class II, Class B, Class II, Class C, Class II) temperature groups T1-T4 combustible gases or explosive mixtures formed by steam and airInstallation adjustment and usage requirementsBefore installation, the following inspections must be carried out. If they do not meet the requirements, they are not allowed to be used.The thrust on the thruster nameplate should match the required thrust.Equipped with explosion-proof signs and explosion-proof certificate numbers. Products used underground should have a "MA" markThe explosion-proof level and group of the thruster should meet the requirements for explosive mixture locations.All fastening bolts should be tightened, and all components of the explosion-proof enclosure should be properly connected.All explosion-proof parts should be free from cracks and defects that affect explosion-proof performance.The insulation resistance between the stator winding and the casing shall not be less than 0.38M (rated voltage 380V), 0.66M (rated voltage 660V), and 1.4M (rated voltage 1140V)The selection of brake type mainly depends on the product standard requirements and actual needs of the host or mechanism to determine the type of brake. As stipulated in the standard, the lifting mechanism and the luffing mechanism must be equipped with a normally closed brake, and the walking or rotating mechanism can use a normally closed brake. Consider the location of use, and if there is sufficient space for brake installation, block type, belt type, or arm type disc brakes can be selected; When the space is limited, the internal shoe type or clamp type disc brake can be selected. Considering the usage environment of the supporting host, electromagnetic or pneumatic brakes should be selected for occasions with strict requirements for oil leakage. For metallurgical sites with high environmental temperatures, electric hydraulic brakes or metallurgical electromagnetic brakes with higher insulation levels can be selected. When using electric hydraulic brakes in low or high ambient temperatures and in outdoor areas, attention should be paid to replacing the corresponding brand of hydraulic oil. In environments containing iron filings and severe dust, the use of electromagnetic brakes should be avoided to prevent dust from entering the gap of the electromagnet and affecting its suction. For special or important occasions, additional functions of brakes should be added as needed. In low temperature environments, electric hydraulic thrusters can be used for heaters. When there are strict requirements for the transition between starting and braking processes, install a travel switch to understand the opening and closing status of the brake. For environments where maintenance and adjustment are difficult to implement, brake gap equalization devices and automatic compensation devices for friction plate wear can be installed. Adding a manual brake release device can manually open the brake in special circumstances.

time：2020-12-22

Mining BEd-80/6 explosion-proof electric hydraulic thruster voltage 380-660VThe BED series explosion-proof electric hydraulic thrusters are mainly used as driving devices for electric hydraulic drum brakes, and can also achieve rapid movements such as reciprocating, circular, and swinging through levers. They are suitable for industries such as lifting, transportation, metallurgy, mining, ports, and construction; Its explosion-proof performance complies with the provisions of GB3836.2-2000 "Explosion proof Electrical Equipment and Explosion proof Electrical Equipment" d "for Explosive Atmospheres. The explosion-proof signs are" dI "and" DIICT4 ", which are respectively used in underground coal mines and explosive mixture fields formed by IIA, IIB, and IIC temperature groups T1-T4 combustible gases or steam and airInstallation, adjustment and usage requirements u=15886503434092269132&fm=26&gp=0Before installation, the following inspections must be carried out. If they do not meet the requirements, they are not allowed to be used.The thrust on the thruster nameplate should match the required thrust.Equipped with explosion-proof signs and explosion-proof certificate numbers. Products used underground should have a "MA" markThe explosion-proof level and group of the thruster should meet the requirements for explosive mixture locations.All fastening bolts should be tightened, and all components of the explosion-proof enclosure should be properly connected.All explosion-proof parts should be free from cracks and defects that affect explosion-proof performance.The insulation resistance between the stator winding and the casing shall not be less than 0.38M (rated voltage 380V), 0.66M (rated voltage 660V), and 1.4M (rated voltage 1140V)Dedicated to coal mines, cranes, and mining machineryBEd-121/12, BEd-201/12, BEd-301/12Manufacturer's prices for BEd30/5, BEd50/6, BEd80/6, BEd80/12 explosion-proof electric hydraulic thrustersManufacturer's prices for BEd121/6, BEd201/6, BEd301/6, BEd30/5 explosion-proof electric hydraulic thrustersManufacturer prices for BEd121/12, BEd201/12, BEd301/12 explosion-proof electric hydraulic thrustersBEd-30/5, BEd-50/6, mining BEd-80/6 explosion-proof electric hydraulic thruster voltage 380-660V Manufacturer's priceManufacturer's prices for BEd-121/6, BEd-201/6, BEd-301/6, BEd-30/5 explosion-proof electric hydraulic thrustersManufacturer prices for BEd-121/12, BEd-201/12, BEd-301/12 explosion-proof electric hydraulic thrustersProduct Name Product Model u=16319016783953158633&fm=26&gp=0 Flameproof Electric Hydraulic Thruster BYT-320/20 (380/660)Explosion proof electric hydraulic thruster BEd501/12 (660/1140)Explosion proof electric hydraulic thruster BEd-121/12 (380V/600V)Explosion proof electric hydraulic thruster BEd121/6 (380/660)Explosion proof electric hydraulic thruster BYT1-180/12 (380/660)Explosion proof electric hydraulic thruster BYT1-45Z/6 (660/1140)Explosion proof electric hydraulic thruster BYT1-45Z/6 (380/660)Explosion proof electric hydraulic thruster BEd121/6 (380/660)Explosion proof electric hydraulic thruster BYT1-180Z/12 (660/1140)Explosion proof electric hydraulic thruster BEd 301/12 (660/1140)Explosion proof electric hydraulic thruster BYT1-25ZB/4 (380/660)Explosion proof electric hydraulic thruster BEd201/6 (380/660)Explosion proof electric hydraulic thruster BEd-301/6 (660/1140)Explosion proof electric hydraulic thruster BYT1-180Z/12 (660/1140)Explosion proof electric hydraulic thruster BYT1-320Z/20 (660/1140)Explosion proof electric hydraulic thruster BYT1-320Z/20 (660/1140)Explosion proof electric hydraulic thruster BEd121/6 (127) Explosion proof electric hydraulic thruster BEd201/6 (380/660)Explosion proof electric hydraulic thruster BYT1-320/12 (660/1140)Explosion proof electric hydraulic thruster BEd80/6 (380/660)Explosion proof electric hydraulic thruster BEd50/6 (380/660)Explosion proof electric hydraulic thruster BYT1-45Z/6 (660/1140)Explosion proof electric hydraulic thruster BEd-121/6 (660/1140)Explosion proof electric hydraulic thruster BEd501/12 (380/660)Explosion proof electric hydraulic thruster BEd 80/12 (660/1140)Explosion proof electric hydraulic thruster BYT1-90/8 (660/1140)Explosion proof electric hydraulic thruster BYT1-125Z/10 (660/1140)Explosion proof electric hydraulic thruster BYT1-45/6 (380/660)Explosion proof electric hydraulic thruster BYT1-45Z/6 (380/660) explosion-proof BYT1-45

time：2020-12-22

The YLBZ series hydraulic wheel brake is mainly used as a windproof brake for large and medium-sized cranes and port loading and unloading machinery used in the open air in ports, docks, and other areas under working conditions and as an auxiliary windproof brake in non working conditions; The wheel brake is generally only used on passive wheels and provides direct braking, which can effectively prevent the braked wheels from rolling and shifting under the action of wind; If windproof brakes are used simultaneously on the high-speed shaft of the driving wheel, the effect will be better and more economical.YLBZ63-180, YLBZ63-200, YLBZ63-210, YLBZ100-200 hydraulic wheel edge brake manufacturer, priceYLBZ hydraulic wheel brake:YLBZ25-160; YLBZ40-150; YLBZ40-160; YLBZ40-180; YLBZ40-200; YLBZ63-180; YLBZ63-200;YLBZ63-210; YLBZ100-200The brake is a new type of hub mechanical basic component brake product developed according to the requirements of port lifting machinery. This product is a windproof device designed and innovated for the working state of cranes based on the digestion and absorption of advanced foreign technology. When the product is powered on, the electric hydraulic thruster acts, and its push rod quickly rises, and the iron wedge is lifted by a lever and transmission mechanism to ensure the normal operation of the crane; When the power is cut off, the push rod of the thruster is under the action of spring force, and the iron wedge is placed on the track through a lever, which blocks the wheels in case of strong winds, providing safety protection. This product uses an electric hydraulic thruster, lever, and connecting rod mechanism to achieve action requirements, with a reasonable structure and reliable action. And the use of iron wedges with a reasonable shape and high-strength and high hardness friction blocks ensures the wind resistance of the entire machine, with strong wind resistance. The brake is equipped with self-lubricating bearings, and the friction blocks are connected in a card type, which is convenient for replacement and has high transmission efficiency. Equipped with a manual release device for easy operation. The product has been identified at the provincial level and has reached the international advanced levelPrecautions:The hydraulic braking system consists of three parts: a vacuum booster, a hydraulic transmission device, and a brake. In case of brake failure or abnormal sound during driving, stop the vehicle immediately for inspection and timely troubleshooting, especially during the transportation of Tank truck and explosive equipment transport vehicle.Main features: safe and reliable use; High action frequency, energy-saving; Green and environmentally friendly, asbestos free liner; Equal distance device to prevent the brake pad from floating against the brake wheel; Equipped with lifting hooks for easy maintenance.

time：2020-12-22

Jiaozuo Brake, subordinate to Jiaozuo Hongqi Brake Co., Ltd., is a company integrating brake, actuator, development and manufacturing, sales and service.

time：2020-12-22

The advantages and disadvantages of drum brakes and disc brakes have always been concerned. Especially in recent years, with the basic replacement of disc brakes in the field of household cars, many people began to fall in love with disc brakes. However, in the field of commercial vehicles, drum brakes still dominate the market, and whether they will develop towards disc brakes in the future remains to be tested.Is the future the world of disc brakes? I'm afraid I'm not satisfied with the drum styleDrum brakes have low cost and poor heat dissipationAs early as 1902, drum brakes were designed for use in carriages, and it was not until around 1920 that they began to be widely used in the automotive industry. Drum brakes use a brake transmission mechanism to compress the brake shoes onto the inner side of the brake drum, generating braking force. They slow down the wheels or park within the shortest distance as needed to ensure driving safety and ensure reliable parking without automatic slipping.Drum brakes are mainly divided into leading and trailing shoe brakes and bidirectional self boosting brakes. The leading and trailing shoe brakes are divided into wedge-shaped block brakes and camshaft brakes, and the braking effect of bidirectional self boosting brakes is relatively better.Is the future the world of disc brakes? I'm afraid I'm not satisfied with the drum styleDrum brakes are cheap and conform to the traditional design. For heavy vehicles, the speed is generally not very high, the durability of brake shoes is also higher than that of disc brakes, and under the condition of obtaining the same braking torque, the diameter of the brake drum of drum brakes is much smaller than that of disc brakes. Therefore, many heavy vehicles still use the four-wheel drum design.Is the future the world of disc brakes? I'm afraid I'm not satisfied with the drum styleIs the future the world of disc brakes? I'm afraid I'm not satisfied with the drum styleAlthough drum brakes are widely used in the field of commercial vehicles, they also have their own shortcomings. Firstly, the heat dissipation is much worse, and secondly, the braking force stability is insufficient. The braking changes greatly on different road surfaces, making it difficult to control. When continuously applying the brake, it may cause brake recession and cause brake failure. In addition, after using the drum brake for a period of time, it is necessary to regularly adjust the gap between the brake shoes, and even remove the entire brake drum to clean the accumulated brake powder.● High cost of disc brake Brake pads are often replacedCompared with the drum brake, the disc brake appeared relatively late, but its development speed is very fast. At present, domestic domestic cars have basically achieved the configuration of front disc and rear drum, and even some cars of higher grade have achieved Disc brake before and after.With the development of China's automotive industry, national standards have increasingly strict requirements for automotive braking performance. In some commercial vehicles, there have also been configurations of front and rear discs, and even front and rear discs. GB7258-2012 (implemented on September 1, 2012) clearly states that the front wheels of special school buses and dangerous goods transport vehicles and other buses with a length of more than 9m shall be equipped with disc brakes.Is the future the world of disc brakes? I'm afraid I'm not satisfied with the drum styleThe heat dissipation performance of the disc brake is very good, and the braking system responds quickly, which can make high-frequency braking action, so it is more in line with the requirements of the ABS system. Compared with the drum brake, the Disc brake is simple in structure and easy to maintain. Under the same size, since the contact area between the brake pad and the brake drum of the drum brake is larger than that of the Disc brake, the brake force of the drum brake is also larger, so the drum brake is generally used for heavy haul trucks.Is the future the world of disc brakes? I'm afraid I'm not satisfied with the drum styleThe disk brake has not yet shaken the position of drum brake in the commercial vehicle field. In addition to its high cost, it is also not suitable for some special environments, for example, it is easy to damage the brake disc in case of more sand and stones. In addition, the friction area between the brake pad and the brake disc of the Disc brake is smaller than that of the drum brake, and the brake force is also smaller. Moreover, the brake pad is more worn, and the replacement frequency is higher.● Postscript:Overall, both disc and drum brakes have their own advantages or disadvantages, and the most significant difference between the two seems to be focused on thermal decay and braking force. Disc brakes have slightly less braking force, but better thermal decay, while drum brakes have the opposite. Many comments on the Internet previously said that Disc brake is the future trend. At present, it is still too early to say.

time：2019-05-06

The structure and function of handbrake and foot brake are different, and handbrake can replace foot brake in dangerous situations.What is the difference between handbrake and footbrake?① The foot brake is a four wheel brakeThe professional name of foot brake is service brake (referred to as foot brake later), which can control four wheels.Early braking systems would distribute this braking force to the front and rear wheels, with the front wheels distributing 70% of the braking force and the rear wheels only distributing 30% of the braking force.But there is a problem with this. If a tire blows out, the distributed braking force will become useless, and braking will become difficult.So later on, EBD (Electronic Brake Force Distribution Device) appeared in cars. At the moment of braking, the driving computer would collect the force difference between the four tires and calculate the appropriate braking force at high speed. Then adjust the braking device to apply different forces to the four tires according to the set procedure, so as to match the braking force with the friction force (traction force) to ensure the stability and safety of the vehicle.② The handbrake is the rear wheel brakeThe professional name for handbrake is parking brake (referred to as handbrake), which generally only applies brakes to the rear wheels.For most light cars, the handbrake uses the lever principle to pull the brake cable (the electronic handbrake just turns this cable into an electrical signal) to lock the rear brake shoe or caliper (this is like the pliers clamp patch. The tighter the clamp, the better the braking effect).Light and medium-sized trucks and off-road vehicles use mechanical means to lock the brake drum on the transmission shaft to achieve braking purposes. (This brake drum feels like a Wall plug. It is stuck from the inside to the outside.)Heavy trucks and large passenger cars often have spring energy storage brakes in their rear brake chambers. When driving, compressed air lifts the springs. When parking, the driver only needs to operate a valve switch to release the air, and the springs will lock the rear wheels. So the handbrake is used to brake the rear wheels (this is very similar to when I was a child catching birds in a washbasin, using a rope to pull out the chopsticks, and the birds were covered under the washbasin. Here, the chopsticks are like air, and the washbasin is like braking).Can you use a handbrake instead of a foot brake?① Hand brake cannot replace foot brakeThe hand brake and foot brake functions are different and cannot be replaced in generalActually, you can tell their differences based on their names. The service brake is used to slow down a vehicle when it has speed, while the parking brake is used to keep the vehicle stationary after it has stopped. As mentioned earlier, the handbrake can only control two rear wheels. When studying subject one, the textbook explained a phenomenon: when the rear wheels of a vehicle lock up while driving (the wheels do not turn and are "dragged" away), the vehicle will "spin", causing the "rear wheels to lock up" is also the reason why the handbrake can "drift".When the brake suddenly breaks down while the vehicle is driving, the vehicle can be braked by pulling the handbrake. However, when pulling on the handbrake, it is important to be careful not to pull it all down or too fast, as this can easily cause damage to the handbrake and malfunction, and the car may also lose control. The correct approach should be to slowly apply force, slowly pull the handbrake to the end, and then, appropriately move back and forth, slowly pull and release, without causing the rear wheels to lock up instantly;Moreover, when the vehicle speed is high (greater than 40km/h), it is necessary to promptly try to use a forced downshift method to slow down the vehicle, wait for the speed to decrease, and then use the handbrake to slowly stop the vehicle. The braking force of applying the handbrake is much smaller than that of applying the brake. It must be emphasized that when vehicles are driving at high speeds, they must not forcefully apply the mechanical handbrake, which is basically equivalent to "seeking death".Every day, 'Spare tire says car' will give you a practical little dry goods for cars. Please pay attention to spare tire says car, 60 seconds per day, easy to understand cars.

time：2019-05-06

First, what is Disc brakeDisc brake is a disc brake that is fixed to the tire and rotates at the same speed. When braking, oil pressure is used to push the brake pads to clamp the circular disc, and friction is generated by contact to brake. The brake pads on the caliper and the brake discs connected to the wheels interact with each other until the wheels stop rotating. Disc brake is divided into disc type, ventilated disc type, disc type and friction plate type.Disc brakes have better responsiveness and stability, good heat dissipation, and are easy to replace. But its wear rate is relatively high and its cost is also relatively high.Below we will talk about disc brakes (solid discs) and ventilated disc brakes.Difference between solid Disc brake and ventilated Disc brakeSolid disc brake The solid disc (brake disc) is mostly made of gray iron, which dissipates heat quickly. It is mostly used for the rear wheels of cars or the front wheels of minicars, and the price is relatively cheap.It belongs to the most common type of disc brake, also known as disc brake. The components he consists of include brake discs, wheel cylinders, brake calipers, and oil pipes. By hydraulic pressure, the friction plate contacts the brake disc, thereby achieving the goal of parking through the effect of friction. It is made of solid materials, without any gaps or other elements, which is the original disc brake. This type of brake has fast heat dissipation, light weight, simple structure, and convenient adjustment. Especially in high load, it has good heat resistance performance, stable braking effect, and is not afraid of mud and water invasion. When driving in winter and bad road conditions, Disc brake is easier to stop the car in a shorter time than drum brake.Ventilated disc brake Ventilated disc (brake disc) is mostly used for the front wheel, which is expensive. Ventilated Disc brake brake has a ventilation hole in the middle of the brake disc; It belongs to the air-cooled type of disc brake, which can reduce the generation of heat during braking and increase its service life. According to the data, it can reduce the temperature increase by 20% to 30%, and the structure is very simple and the quality is also very lightweight. The selection of materials is also diversified, including carbon fiber reinforced materials, aluminum matrix composites, ceramics, and other friction materials, which have gained more practicality. Some disc brakes also have many small holes on the brake disc to accelerate ventilation and heat dissipation to improve braking efficiency. Ventilation discs can also be simple or complex, some of which are paired with mechanical mechanisms that guide wind to the brake discs. Changing the direction of the wind from horizontal to vertical is not very simple.The difference between ventilated brake discs and solid brake discs1. Position difference: The main position of the solid disc is on the rear wheel, while the position of the ventilation disc can be on all four wheels. 2. Structural difference: The selection of friction materials for ventilation discs is very extensive, but there are many more process holes than solid discs. The quality is lighter than solid discs, but the manufacturing process and price are more expensive than solid discs. 3. Effect difference: The heat dissipation performance of a ventilation plate is stronger than that of a solid plate, and the ventilation plate can improve the heat dissipation effect through the holes on the plate. The service life of the ventilation disc is also longer than that of the solid disc, which can be said to be an improvement of the solid disc. 4. Usage difference: Due to the fact that the ventilation disc can quickly dissipate heat during the braking process, the braking effect is also very good. A solid disc will affect its braking effect due to the heat brought by braking, and due to its larger weight, it will increase fuel consumption and maintenance costs. The solid type cannot be used for a long time, but the cost of maintenance and repair is much lower. The Mode of action of disc brake is similar to that of ordinary bicycles - a rubber brake disc connected with wheel hoops interacts when braking until the wheels stop rotating. Disc brakes can be easily combined with the ABS system, making them more suitable for use on mid to high-end sedans;Nowadays, the rear wheels of ordinary small cars are equipped with disc brakes, commonly known as front discs and rear drums!Overall, the ventilated disc is an advanced version of the solid disc, with better braking efficiency but also higher cost. Based on everyone's needs for installation, the standard configuration for manufacturers is usually solid disc brake discs, which are usually modified.

time：2019-05-06

Ms.'s friend sold two YEJ motors, and there were no abnormalities during the motor test, including the verification of the motor's braking effect. However, there was a fact that the motor could not start during user use. The service personnel arrived at the scene and found that there was a problem with the brake wiring. After reconnecting, everything was normal for the motor. In response to this issue, according to the opinions of service personnel, improvements have been made to the factory wiring of this type of motor, and similar problems have not occurred again.About the power loss brakeElectromagnetic brake is a commonly used additional device for electric motors, which can be divided into two types: energized brake and deenergized brake. The electric braking method is fast and accurate in positioning, and is used for automated intelligent control equipment that requires precise positioning. Its application has certain limitations; Electromagnetic power loss brakes (hereinafter referred to as brakes) are widely used in mechanical transmission systems with positioning and braking requirements, such as machine tools, metallurgy, motors, chemicals, construction, packaging and printing, textiles, and automated production lines. In addition to the advantages of easy operation and fast braking speed, power loss brakes mean that equipment can safely brake in case of unexpected power outage and loss of control, ensuring the safety of personnel and facilities.Structural advantages and characteristicsAlthough the axial size of the compact and power-off brake is small, the braking torque is sufficient.The quick response and power loss brake uses a spring storage device to form braking torque, and the reset time of the spring arrow is the braking response time.Long service life, power loss braking adopts new friction materials, which determine the performance of high service life.Working principle of brakingThe electromagnetic power loss brake mainly consists of magnetic choke, armature, connecting plate, spring, friction disc, gear sleeve and other components equipped with coils. The spring is installed inside the magnetic choke, and the armature can move axially. The magnetic choke is fixed to the base by installation screws and the clearance is adjusted. After reaching the specified value, the gear sleeve is connected to the transmission shaft through a key, and the outer teeth of the gear sleeve mesh with the inner teeth of the friction plate. When the coil is powered off, under the action of spring force, friction is generated between the friction disc and the armature, the base (or connecting plate), and the transmission shaft is braked through the gear sleeve. When the coil is energized, under the action of electromagnetic force, the armature is attracted to the magnetic choke, causing the friction disc to release and release the brake.Brake operating conditionsThe relative humidity of the surrounding air shall not exceed 85% (20 ± 5 ℃)There is no gas or dust in the surrounding medium that is sufficient to corrode metals and damage insulation.The brake is equipped with Class B insulation around it, with voltage fluctuations not exceeding+5% and -15% of the rated voltage. Its working mode is in accordance with the continuous working system installation control requirements.During installation, ensure the accuracy of the fit between the transmission shaft and the brake.Before installation, the brake must be cleaned thoroughly, and there must be no oil or dust on the friction surface and inside the brake.The gear sleeve must be fixed axially.Simple calculation principles for selectionThe choice of brake model largely depends on the size of the required braking torque. In addition, factors such as inertia moment, relative speed, braking time, and operating frequency of braking should also be considered. The following are the design rules recommended by a certain brake manufacturer. Different manufacturers may have some differences, but the principles are all similar.Calculate the required braking torque: T=K × nine thousand five hundred and fifty × P/nAmong them: T - Required braking torque (N.m)P - Transmission power (kW)N - Relative speed during brake braking (r/min)K Factor of safety (K>2)Maintenance and upkeep of brakesAfter using the brake for a period of time, due to the wear of the friction parts, it is necessary to readjust the clearance value by adjusting screws, nuts, adjustment sleeves, etc. to meet the specified value.The friction surface should always be kept clean and free of impurities.Issues that must be noted during installationThe brake and motor share the same power supply, ensuring that both the motor and brake are powered on and powered off simultaneously.Given the characteristics of both supplying power and losing power simultaneously, it is necessary to ensure consistency in the rated voltage of both.The brake can only lose power and release the brake control at rated voltage. Once the voltage is low, the motor cannot start, and the motor will be burned out as a result; Therefore, the motor for installing the brake must ensure that it starts at full pressure.For the short circuit test of the motor, due to the low pressure applied (such as 380V three-phase asynchronous motor, the pressure is generally 100V), it is not necessary to block the rotor to meet the static state requirements of the motorThe clearance of the brake disc is generally adjusted before leaving the factory. After the installation of the brake, the conformity of the clearance should be verified and judged through inspection and testing.The brake wiring should be reliable, and its terminal should be installed under the motor's own wiring fixing nut together with the motor stator terminal to ensure that the customer's wiring will not affect its original wiring reliability. This is also the fact that Ms. Shen mentioned in the beginning of the article the measures to improve the brake wiring, which can be considered a catch up.Fault Cause AnalysisThe brake cannot be released after being powered on: possible reasons include coil damage; The power supply is not connected or the voltage is insufficient; The working gap is too large to close.Insufficient braking torque of the brake: the motor speed is too high; Excessive motor load; Impurities or damage on the friction surface; Insufficient or ineffective spring force.Brake heating: The friction plate slips due to overload; Insufficient supply voltage.

time：2019-05-06

Xiao L, who specializes in motor testing work, has one specialty: he is very sensitive to tedious test data. There is a batch of motors with brakes installed, and the short-circuit data is very consistent. Little L noticed some differences from the motors tested in the past, and asked Ms. why the parameters are so neat and uniform. Ms. Shen also felt that this phenomenon was somewhat strange and specifically understood the entire experimental process.The original testing equipment used by XiaoL did not mechanically brake the motor when collecting short-circuit data, but only collected instantaneous values. Under normal conditions, there may be objective differences in the starting time of different motors after being powered on, resulting in poorer data consistency. Relatively speaking, there are two special characteristics of motors equipped with brakes: firstly, the voltage is lower during short-circuit testing; Secondly, when the motor is not in operation, the rotor is in a stationary state, so the consistency of the corresponding motor test data is better.The power loss brake has been widely used as an additional device for motor products, due to its advantages of simple structure, low noise, safety and reliability, and is widely used in various mechanical transmission devices. Power loss brakes are a branch of brakes that have been well promoted in motor products due to their unique advantages.Brief Description of Working PrincipleWhen the excitation coil of the brake is connected to the rated voltage (DC), the electromagnetic force pulls on the armature to separate (release) the armature from the brake disc. At this time, the transmission shaft runs or starts normally with the brake disc. When the transmission system is separated or powered off, the brake is also powered off at the same time. At this time, the spring is applied to the armature, forcing Friction torque between both sides of the brake disc and the armature and the flange to stop the transmission shaft quickly. Because the brake is braking in a state of power loss, it is named after "power loss braking".If the heat dissipation environment of the brake is poor and the transmission shaft operates continuously for a long time, if conditions permit, the voltage can be converted to 70% -80% of the rated voltage after the brake operates to reduce heat generation.Line connection between power loss brake and motorAccording to the actual needs of motor braking, the brake and motor share a wiring board to achieve simultaneous power supply and power outage. It is particularly important to emphasize that this type of brake can only be started with rated voltage, otherwise it may cause excessive short circuit current and motor burnout due to the inability of the brake to start. For the short-circuit test of three-phase asynchronous motors, there is no need to implement rotor blocking on the motor, as the brake cannot be released under low voltage conditions, which can ensure that the motor rotor is in a stationary state.Precautions for brake installationThere must be no oil stains on both sides of the friction disc and the surface of the armature, and it must be kept clean, otherwise it may not be possible to achieve braking due to insufficient friction force;Proper air gap must be ensured during installation“ δ”； To ensure the free suction and release of the armature, it is necessary to ensure an air gap“ δ” Suitable and uniform in size.The gear sleeve must not have axial movement.After installation, the hollow bolt must be screwed out and locked onto the rear cover or flange of the motor.Brake structure and performance characteristicsThe brake is composed of a magnetic yoke, excitation coil, spring, brake disc, armature, spline sleeve, installation screws, etc. The brake is installed at the rear end of the flange plate (or motor) of the equipment; The transmission shaft is connected to the spline sleeve and the brake disc.1. Although the axial size of the compact and power-off brake is small, the braking torque is sufficient.2. The quick response and power loss brake uses a spring device to form braking torque, and the spring reset time is the braking response time3. Long service life, power loss braking adopts new friction materials, which determine the performance of long service life.Suitable working conditions for brakes1. The relative humidity of the surrounding air shall not exceed 85% (20 ± 5 ℃)2. There is no gas or dust in the surrounding medium that is sufficient to corrode metals and damage insulation.3. The brake is surrounded by Class B insulation, with voltage fluctuations not exceeding+5% and -15% of the rated voltage, and its working mode is continuous working4. During installation, ensure the accuracy of the fit between the transmission shaft and the brake.5. The brake disc of the brake must be used without oil stains.The above unofficial content only represents personal opinions.

time：2019-05-06

Consisting of an air source and control components. The air source includes air compressor, pressure regulating device, double needle Barometer, front and rear axle air reservoirs, low air pressure alarm device, oil and water drain valve, air intake valve, safety valve and other components, and the control device includes brake pedal, pull rod, parallel dual chamber brake valve, cam opening brake, etc.The air compressor first inputs compressed air into the wet air storage cylinder through a one-way valve, separates oil and water, and then enters the front and rear chambers of the air storage cylinder through the one-way valve. Then, the brake valve controls the inflation of air into the brake chamber to achieve braking.Figure 7-1 Dual circuit pneumatic brake transmission device for Dongfeng EQ1092 carDivided into two circuits (as shown in Figure 7-1): one circuit is connected to the front brake chamber through the air reservoir, the rear chamber of the dual chamber brake valve, and the other circuit is connected to the rear brake chamber through the air reservoir, the front chamber of the dual chamber brake valve, and the quick release valve. When one circuit fails, the other circuit can still operate to maintain a certain braking capacity of the car, thereby improving the safety of driving.1. Air compressorThe function of an air compressor is to generate compressed air, which is the power source for the entire pneumatic braking system.It is fixed on the bracket on one side of the engine and driven by the crankshaft pulley through a V-belt connection.Common air cooled reciprocating plug gas compressors (as shown in Figure 7-2) can be divided into two types based on the number of cylinders: air-cooled single cylinder and air-cooled double cylinder.The air compressor has a crank connecting rod mechanism similar to the engine. The lower end of the cylinder body made of cast iron is connected to the crankcase with bolts. The outer part of the cylinder body is cast with heat dissipation fins. The aluminum cylinder head is fastened to the upper end face of the cylinder body with bolts, and a sealing cylinder gasket is installed between them. There are inlet and exhaust chambers on the cylinder head, each with a plate shaped valve in opposite directions inside, which is pressed onto the valve seat with a spring. The exhaust valve is connected to the air storage cylinder through the exhaust pipe, and the intake valve is connected to the small air filter through the intake duct. A unloading device (unloading chamber or unloading valve) is installed above the intake valve.2. Pressure regulator(1) The function of the Pressure regulator: the Pressure regulator is to control the air pressure in the air reservoir within the specified range, and enable the air compressor to unload and idle when the air pressure exceeds the specified range, so as to reduce the power loss of the engine.The connection mode of Pressure regulator usually includes parallel connection and series connection.Figure 7-2 Schematic diagram of piston gas compressor(2) The structure of the Pressure regulator is shown in Figure 7-3. Two pipes with filter elements are installed on the Pressure regulator housing, and the joints are respectively connected with the unloading chamber and the air reservoir. A diaphragm phase pressure regulating spring is installed between the shell and the cover, and the hollow tube is fixedly connected with threads in the diaphragm. The hollow tube can slide in the central hole of the shell, with a sealing ring between them, and the upper side has a radial hole connected to the axial hole. The lower part of the Pressure regulator is equipped with an exhaust valve which is connected with the atmosphere.Figure 7-3 Diaphragm Pressure regulator3. Dual pipeline parallel dual chamber diaphragm brake control valve(1) The function of the brake control valve: The brake control valve controls the compressed air entering the brake chamber and trailer brake valve from the air reservoir, that is, controls the working air pressure of the brake chamber. At the same time, it has a progressive follow-up effect during the braking process. Thus, there is a certain proportional relationship between the working air pressure of the brake chamber and the stroke of the brake pedal, ensuring stable, reliable, and safe braking.(2) The composition of the brake control valve is shown in Figure 7-4: mainly composed of upper casing, lower casing, balance arm, diaphragm, valve and other components.Figure 7-4 Structural schematic diagram of parallel dual gun brake control valveB exhaust port; E exhaust valve port; V balance chamber.4. Brake chamber(1) Function of the brake chamber: convert the input air pressure into the mechanical force of the brake cam, so that the wheel brake produces Friction torque.There are two types of brake chambers: diaphragm type and piston type.(2) The structure of the brake chamber: The diaphragm type brake chamber used in the Jiefang CA1092 car (as shown in Figure 7-5). It mainly consists of components such as a cover, diaphragm, shell, and return spring.Figure 7-5 Schematic diagram of diaphragm brake chamber5. Cam opening wheel brakeThe structure of the cam opening type wheel brake (as shown in Figure 7-6) is similar to that of the hydraulic cylinder brake, except that the brake cam is used as the opening device. The front and rear brake shoes are made of malleable cast iron, and both are matched with the eccentric journal clearance of the lower end support hole and support pin, and are axially limited by a baffle and locking pin. When not braking, the return spring pulls the upper support surface of the brake shoe against the cam of the brake camshaft. The cam is integrated with the shaft, mostly made of medium carbon steel, and its surface is high-frequency quenched to improve its wear resistance. The brake camshaft is fixed on the brake base plate through a support, and its tail spline shaft is inserted into the spline hole of the brake adjustment arm. In order to reduce friction between the camshaft and the support, bronze bushings are installed at both ends of the support, and lubrication nipples are available for regular lubrication. Install a sealing washer at the outer end of the bushing, and limit and adjust the axial displacement of the camshaft with a thrust washer and adjusting washer.

time：2019-05-06