Jiaozuo brake

Three additional devices for electric hydraulic thrusters1. Brake spring: It generates braking force, and the spring force value listed in the technical parameters is 1/3 of the rising stroke (2/3 of the falling stroke);2. Reset spring: The working principle is the same as C-spring, but the reset spring force is relatively small;3. Cushion spring: (only applicable to short stroke) mainly regulates the braking process. The non periodic transient process of buffering braking ensures smooth braking. It replaces the connecting block of the push rod and is installed on the piston rod without changing the stroke of the pusher.

time：2021-06-16

Regular inspection items for the use of hydraulic brakes1. Regularly add lubricant to the components of the hydraulic brake.If the worn brake surface is replaced, the gap between the brake surface and the rotary table should be readjusted.3. Regularly check the tightness of the bolts, and tighten the bolts of the electromagnet, yoke, and wiring.4. Regularly check the length of the armature stroke. During the operation of the brake, the sliding surface is worn and the length of the armature stroke increases. If the armature stroke length does not reach the normal value, it should be adjusted, otherwise it will greatly reduce the suction force.5. Regularly check the wear condition of movable components and remove dust and impurities from the surface of the electromagnet.

time：2021-06-16

Composition and Power Braking Principle of Hydraulic Brakes1. The hydraulic braking device is composed of brake pedal, brake master cylinder, brake wheel cylinder, wheel brake, brake roller, pipeline, etc.When the brake pedal is pressed, the piston pushes the master cylinder forward. Generate pressure on the brake fluid in the cylinder and press the oil into each brake wheel cylinder through the oil pipe.3. The wheel cylinder piston opens outward, pushing the brake shoe to contact the brake drum, creating a braking effect.

time：2021-06-16

Grinding method of disc brakeThe disc brake shall grind each brake shoe to make the contact area reach more than 60% of the brake shoe volume. The grinding method is as follows:1. Ensure that the brake disc is clean before grinding.2. Predict the oil pressure value when sticking the brake shoe.3. Predict the thickness of each brake shoe (brake block). To ensure the contact area of the brake shoe, reduce the grinding time, and ensure that the center line of the brake shoe and the brake cylinder is vertical after installation, the brake shoe can be removed first, and the brake shoe can be planed based on the contact surface between the brake shoe and the sliding sleeve until it is flat, and then assembled onto the brake.4. Start the main motor for grinding the brake shoe (do not hang steel wire ropes or lift containers), and the positive pressure for grinding should generally not be too high, slightly 0.2-0.4 Pa lower than the oil pressure for grinding the brake shoe. The grinding of brake shoes should be carried out at low speed. When grinding, it is necessary to always pay attention to the temperature of the brake disc not exceeding 80 ℃ (measured with a temperature gauge) to avoid damaging the surface roughness of the brake disc. When the temperature exceeds the limit, stop grinding and wait for cooling before running. Operate intermittently in sequence until the contact area of the brake shoe meets the requirements.

time：2021-06-16

1. The hydraulic braking device is composed of brake pedal, brake master cylinder, brake wheel cylinder, wheel brake, brake roller, pipeline, etc.When the brake pedal is pressed, the piston pushes the master cylinder forward. Generate pressure on the brake fluid in the cylinder and press the oil into each brake wheel cylinder through the oil pipe.3. The wheel cylinder piston opens outward, pushing the brake shoe to contact the brake drum, creating a braking effect.

time：2021-06-08

Grinding method of disc brakeThe disc brake shall grind each brake shoe to make the contact area reach more than 60% of the brake shoe volume. The grinding method is as follows:1. Ensure that the brake disc is clean before grinding.2. Predict the oil pressure value when sticking the brake shoe.3. Predict the thickness of each brake shoe (brake block). To ensure the contact area of the brake shoe, reduce the grinding time, and ensure that the center line of the brake shoe and the brake cylinder is vertical after installation, the brake shoe can be removed first, and the brake shoe can be planed based on the contact surface between the brake shoe and the sliding sleeve until it is flat, and then assembled onto the brake.4. Start the main motor for grinding the brake shoe (do not hang steel wire ropes or lift containers), and the positive pressure for grinding should generally not be too high, slightly 0.2-0.4 Pa lower than the oil pressure for grinding the brake shoe. The grinding of brake shoes should be carried out at low speed. When grinding, it is necessary to always pay attention to the temperature of the brake disc not exceeding 80 ℃ (measured with a temperature gauge) to avoid damaging the surface roughness of the brake disc. When the temperature exceeds the limit, stop grinding and wait for cooling before running. Operate intermittently in sequence until the contact area of the brake shoe meets the requirements.

time：2021-06-08

The brake manufacturer explains the function of the small hole in the brake friction block1. Heat removal, air exchange, and cooling: The brake disc rotates at high speed and uses air exchange to dissipate heat, cooling the brake device.2. Slag discharge: During braking, friction produces powder that can be discharged from the hole.3. Drainage: It is very important to drain the brakes when driving on rainy days.4. Lightweight effect.

time：2021-06-07

Disc brake is a kind of brake that is realized by friction between discs. There are two types of disc brake: full disc brake and point disc brake. It is hydraulically controlled. Click to enlarge the picture. The main parts are brake disc, slave cylinder, brake caliper, oil pipe, etc. The brake disc is made of alloy steel and fixed to the wheels, rotating with the wheelsThe fixed component is installed on the fixed component, and the brake disc is connected to the rotating component. When braking, the fixed component is pressed onto the brake disc, utilizing friction to achieve braking.structure type The structure of fixed components in massage wipes can be divided into two types: clamp disc type and full disc type1. The structural principle of the full disc brake: the rotating elements and fixed elements of the friction pair in the full disc brake are both disc shaped. When braking, the friction surfaces of the two discs are in full contact, and the working principle is like a friction clutch.2. The structure principle of the caliper disc brake: the fixed element of the caliper disc brake is the brake pad, which is installed in the brake caliper that is connected with the axle and cannot rotate around the axle axis. The contact area between the brake pad and the brake disc is very small. Fixed clamp typeStructural features: The brake caliper does not move, and there are hydraulic cylinders on both sides of the brake discPerformance characteristics: There are no sliding parts except for pistons and brake pads, with good stiffness and easy manufacturing. It can adapt to different circuit driving requirements, but it is large in size, difficult to arrange, and generates a lot of heatSliding clamp typeStructural features: The brake caliper can perform axial sliding, and there is a hydraulic cylinder on the inner side of the brake discSwing clamp type1 arm disc YPZ mesh structure features: the brake caliper is hinged with the fixed seat, and there is a hydraulic cylinder on the inner side of the brake disc1. AdvantagesGood thermal stability, while drum brakes exhibit mechanical decayGood water stability, mud and water are easily thrown away from the brake discThe braking torque is independent of the direction of motionEasy to construct dual circuit system, reliable and safeSmall size, low quality, and good heat dissipationUniform pressure distribution and uniform pad wearReplacing the pads is simple and easy2 DisadvantagesDifficult to prevent debris from getting onto the work surfaceWhen used as a parking brake, the driving mechanism is complexBooster needs to be installed in the brake drive mechanismThe pad has a small working area, fast wear, and low lifespan.Short braking coordination timeEasy to achieve automatic gap adjustmentSBD250 overhaul1. Use a dial gauge to detect that the cross-sectional runout error of the brake disc is greater than 0.06mm. The surface of the brake disc has obvious wear steps and strained grooves, which can be processed and repaired2. Check that the wear limit thickness of the brake disc is 8mm. If the thickness exceeds the limit, replace it with a new oneWhen the thickness of the brake shoe friction plate is less than 7mm (including the bottom plate), the friction plate must be replaced, and the left and right wheels must be replaced in sets (4 friction plates, 4 spring plates)4. Check the brake caliper body. If any oil leakage is found, replace it with a new piston sealing ring

time：2021-06-07

Electric hydraulic thruster ED Electric hydraulic thrusterEd23/5, Ed30/5, Ed50/6, Ed80/6, Ed121/6, Ed201/6, Ed23/5, Ed30/5, Ed50/6, Ed80/6, Ed121/6, Ed201/6, Ed301/6Mainly used as an operating component for the YWZ4, YWZ5, YWZ8, YWZ9, YWL.YW.YWZP series electric hydraulic block brakes. It is widely used in industries such as lifting transportation, metallurgy, mining, port electric hydraulic block brake ports, and construction.Electric hydraulic thruster ED-23/5, thrust 220N, stroke 50mm, 380V, 165WJiaozuo Gongli Brake Co., Ltd; Electric hydraulic thruster; Ed-30/5 thrust 300N stroke 50mm 380V 200W; ED23 Network Image Jiaozuo Gongli Brake Co., Ltd; Electric hydraulic thruster; Ed-50/6 thrust 500N stroke 60mm 380V 210W; Jiaozuo Gongli Brake Co., Ltd. Electric hydraulic thruster; Ed-80/6 thrust 800N stroke 60mm 380V 330W;Jiaozuo Gongli Brake Co., Ltd; Electric hydraulic thruster; Ed-121/6 thrust 1250N stroke 60mm 380V 330W;Jiaozuo Gongli Brake Co., Ltd; Electric hydraulic thruster; Ed-201/6 thrust 2000N stroke 60mm 380V 450W;Jiaozuo Gongli Brake Co., Ltd. Electric hydraulic thruster; Ed-301/6 thrust 3000N stroke 60mm 380V 550W;Electric hydraulic thrusterWarning: The thruster should be reliably grounded according to electrical specifications! Attention: When wiring, cut off the power supply and erect a sign at the power switch that reads "Someone is working, do not switch on",Until the wiring is completed.When wiring, remove the cover of the thruster junction box (there is a wiring diagram on the reverse side), and connect the three-phase power line (phase sequence is not required) and grounding wire as required. Then cover the junction box cover and tighten the screws (see Figure 4). Note: The protection level of the thruster is IP65. The cable should enter the junction box through a stuffing box (the stuffing box needs to be provided by the user). YT1-45/6 YT1-90/8 Electric Hydraulic Pusher ED Full Drawing YT1-320Z/12 YT1-320Z/20 Electric Hydraulic PusherYT1-180Z/8 YT1-180Z/10 electric hydraulic thrusterYT1-90Z/6 YT1-90Z/8 electric hydraulic thrusterYT1-45Z/4 YT1-45Z/5 YT1-45Z/6 Electric Hydraulic Pusher 45 Actual Drawing

time：2021-06-07

Brake manufacturers explain the situation of brake parts being scrappedThe parts of the brake should be scrapped in one of the following situations:1. Cracks.2. The thickness of the brake pad or friction pad is worn to 50% of the original thickness.3. The spring undergoes plastic deformation.4. The wear of the small shaft or shaft hole diameter reaches 5% of the original diameter.

time：2021-06-07

Brake manufacturers summarize common problems with the mechanical part of elevator brakes1. The stroke indicator collides with the movable indicator.2. Long term use may cause the brake shoe to fall off and cause adhesive detachment.3. The sealing rubber has aged and broken, causing foreign objects to fall in and cause the brake to jam.4. The electromagnet core rusts, causing brake jamming.5. The design of the elevator iron core guide mechanism is unreasonable, and multiple fractures occurred at the connection between the copper rod and the iron core, resulting in brake jamming.

time：2021-06-07

The brake manufacturer explains the working principle of electromagnetic brakesThe friction ring rotates with the brake drum, and the electromagnet is connected to the driving lever through a snap ring. At the beginning of braking, the controller sends a braking signal, and the electromagnet is energized to generate electromagnetic attraction, which is adsorbed on the friction ring. Due to the constraint of the electromagnet by the driving lever, it produces relative sliding with the friction ring, and the friction force acting on the electromagnet drives the driving lever connected to it to rotate around the pivot point. The driven end of the lever opens the two friction shoes of the brake and presses them against the brake drum, generating braking torque. At the end of braking, the electromagnet is powered off, and the suction and friction force disappear. Under the pulling force of the return spring, the friction shoe leaves the brake drum and releases the braking.

time：2021-06-07