Jiaozuo brake

The function of the brake (1) Support function: to keep the original stationary object in a stationary state. For example, in a lifting mechanism, keep the lifting load stationary in the air; In the luffing mechanism of the boom crane, maintain the boom in a certain position and remain stationary; It plays a role in preventing wind and sliding for outdoor cranes. (2) Resting effect: It consumes the kinetic energy of the motion department, determines the cost of the hydraulic brake, and converts it into frictional heat energy through the friction pair, enabling the mechanism to quickly stop motion within a certain time or stroke. For example, the braking of various mechanisms in motion. (3) Falling weight effect: The balance between braking force and gravity causes the moving body to descend at a steady speed

The advantages of hydraulic braking are: short lag time (0.1-0.3 seconds);

The working pressure is high (up to 10-20mpa), so the wheel cylinder size is small and can be installed inside the brake, directly serving as the opening mechanism of the brake shoe (or the pressing mechanism of the brake block), without the need for transmission components such as the brake arm, making it simple in structure and small in weight; Mechanical efficiency is high (hydraulic system has self-lubricating function). The main disadvantage of hydraulic braking is that after excessive heating, some of the brake fluid vaporizes, forming bubbles in the pipeline, seriously affecting hydraulic transmission, reducing the efficiency of the braking system, and even completely failing. Hydraulic braking is widely used in passenger cars and commercial vehicles with a small total mass. The 2.2 parking brake system is used to reliably and without time park the car in a certain position or even on a slope, and also helps the car start on a slope. The parking brake system should use a mechanical drive mechanism instead of hydraulic or pneumatic to avoid malfunctions. By analogy, manual parking brake lever and parking brake lever are applied to the rear wheels. Use both rear wheel brake and parking brake. Rear wheel parking brake: Wheel cylinder or wheel brake, (for the leading shoe brake, only an additional parking brake push rod and a parking lever are required) When using the parking brake, a person moves the parking brake control rod and controls the cable. The balance arm and pull rod (pull rope) pull the parking brake lever to open the two shoes. 2.3 The service braking system is used to force the vehicle to slow down or stop during driving, and to maintain an appropriate stable speed when going downhill on short slopes. Its driving mechanism often adopts a dual circuit or multi circuit structure to ensure its reliable operation. At present, disc brakes have been widely used in cars, but except for some Sports sedan that are used for all wheels, most of them are only used as front wheel brakes, and cooperate with the drum brakes of the rear wheels in order to have a higher directional stability when braking. On freight cars, disc brakes are also used, but they are far from being popularized. During the braking process of a four-wheel sedan, due to inertia, the load on the front wheels usually accounts for 70% -80% of the total load of the car. The braking force on the front wheels is greater than that on the rear wheels, and the rear wheels play an auxiliary braking role. Therefore, in order to save costs, car manufacturers adopt a braking method of front disc and rear drum. Chapter 3: Brake Manual KZP Self Cooling Disc Controllable Control Device? Suitable for controllable braking and parking of large electromechanical equipment, especially suitable for braking and parking of downward conveyor belts. The normally closed structure is suitable for various electromechanical equipment, making it an ideal supporting equipment for downward conveyor belts, Obtained national utility model patent (. Second Prize for Scientific Research Achievements in Shandong Province Universities, Third Prize for Science and Technology Progress of the Ministry of Coal, and Safety Mark Certificate. The main technical performance is to cooperate with the electric control device to maintain the deceleration of the belt conveyor during parking within the range of 0.05 to 0.3m/s2. When the control or drag system suddenly loses power, the traction motor exceeds speed, the conveyor belt slips, or other protective parking commands are issued, the braking device can safely and reliably brake 10 times per hour.) The surface temperature of the brake disc is much lower than 150? c. No sparks generated during braking? Convenient setting of large braking torque; Cooperating with the electric control device of the downward conveyor belt, it has controllable starting, overspeed, slip detection and protection functions when starting under load conditions; The hydraulic system adopts dual circuit explosion-proof electro-hydraulic proportional technology, which is easy to debug and install, and has high working reliability; Suitable for controllable braking of various belt conveyors; Suitable for ground and underground coal mines with coal dust, biogas, and explosive hazards.

Explosion-proof hydraulic push rod brake, this product is an essential safety braking device for flammable and explosive mechanical driving equipment. It is widely used in dangerous places such as lifting, transportation, coal mines, metallurgy, mines, railways, ports, buildings, water conservancy and electricity, etc. It has the advantages of smooth braking, low power consumption, long service life, safety and reliability, and convenient maintenance. This product complies with relevant regulations in GB6333-86 Electric Hydraulic Block Brake and GB3836.1/2-2000 Electrical Equipment for Sexual Gas Environment. The explosion-proof signs are EX dIICT4 and EX dIIBT8, suitable for hazardous locations with gas mixtures in factories (coal mines). YWZ, YWZ2, YWZ3, YWZ4, YWZ5, YWZ6, YWZ8, YWZ9, YWZ10, YWZ13, YWL, and YW series electric hydraulic brakes use YT1 and YTD2 (ED) series thrusters as the driving devices for the brakes. The main loader manufacturers have modified their main engine braking system by adopting a fully hydraulic braking system. The principle is to use hydraulic oil as a medium, hydraulic brake price, and transmit braking force. The loader hydraulic system is used as its power oil source, and through hydraulic control components, the pressure oil is directly sent to the brake cylinder for braking, solving the above shortcomings of the pneumatic and hydraulic booster braking system, As the future development direction of wheeled engineering machinery braking systems, hydraulic brakes are currently an ideal substitute for pneumatic and pneumatic braking systems and components. The connection between the motor shaft and the impeller shaft is disconnected, resulting in the motor idling and the push rod not moving. This type of fault occurs frequently and is difficult to determine. The main cause of such failures is the detachment of the square coupling that connects the two shafts. The two ends of this type of coupling are respectively connected to the motor shaft and impeller shaft, but the fastening bolts at the connecting end of the motor shaft are easy to loosen. After it loosens, the square coupling will detach from the motor shaft, and the hydraulic brake model will cause the motor to idle and the push rod to not move. The main reason is that the fastening screws on the coupling are too small and only one screw is tightened unilaterally, with no anti loosening measures at the end of the screw. The brake is mainly used for the walking brake of the gantry crane. When the motor starts, the interaction between the inertia force of the load and the torque of the motor causes the relative rotation between the concave and convex spiral surfaces, generating axial displacement to open the friction pair and release the brake. The distance is opened through a limit device. When the motor is powered off, the force between the concave and convex spiral surfaces disappears, and the spring energy is released, causing the brake pair to fit and produce braking.

It is both a brake and a coupling, with two-step braking and dynamic windproof characteristics. Dynamic wind protection refers to the situation where when the gust of wind reaches the driving force of the motor while walking along the wind, the force between the concave and convex spiral surfaces will disappear, and the spring will be released to form instant braking and opening. The driver will have an unstable feeling, prompting the driver to stop. After stopping, the safety will be ensured by the large braking force. The two-step braking inertia brake has the characteristics of low walking braking torque and high braking torque after stopping, which is generated by its structural characteristics.

YWZ4 and YWZ images ST, SBD, SH images