YW-E200/E50A Two-Step Electro-Hydraulic Drum Brake

YW-E200/E50A, as a member of the YW-E series two-step electro-hydraulic drum brakes, combines stable braking performance and convenient usability. Its advantages are concentrated in aspects like flexible braking control, reliable operation, and easy maintenance. It is also widely used in lifting and conveying equipment. The detailed introduction is as follows:

Core Advantages

Flexible two-step braking with adjustable performance

It implements step-by-step braking through two-stage torque output. The first step applies a small braking torque for smooth deceleration, and the second step increases the torque to achieve reliable maintaining or windproof braking. Moreover, the delay time between the two steps can be adjusted within 1 - 15 seconds via the one-way speed control valve in the damping cylinder loop, which can meet the braking needs of different working conditions.

The braking spring is arranged in the square tube with a scale. Users can directly read the braking torque value, eliminating the cumbersome measurement and calculation processes during torque adjustment.

High operational safety and reliability

The interlocking clearance equalization device and automatic shoe positioning device can keep the clearance of the brake shoes on both sides balanced without manual adjustment. This completely avoids the phenomenon that one side of the brake lining adheres to the brake wheel due to uneven clearance, thus preventing potential safety hazards such as abnormal wear of the brake wheel.

It can be equipped with release or closing limit switches. These switches can send out signals to indicate whether the brake is normally released or closed, facilitating the operator to monitor the working state of the brake in real-time. When the brake lining is worn to the limit, the matching limit switch will also send an alarm signal.

Durable and efficient in transmission

The main hinge points of the brake are equipped with self-lubricating bearings. These bearings not only improve transmission efficiency but also have a long service life, and no additional lubrication operations are required during the entire use process, reducing the difficulty of daily maintenance.

The brake lining adopts a clamped integral molding structure. There are multiple material options such as semi-metallic asbestos-free hard and semi-rigid linings. The replacement process is quick and convenient, and the asbestos-free design also meets environmental protection requirements.

Strong expansibility and adaptability

It supports multiple additional devices, including manual release devices. When the power is cut off or the hydraulic system fails, the brake can be manually released for emergency handling. It can also be equipped with a thruster with a descending delay valve to realize delayed closing of the brake.

Its connection size and braking torque parameters comply with multiple standards such as JB/T and DIN15435. It has good compatibility and can be matched with different types of large and medium-sized mechanical equipment.

Application Scenarios and Usage Notes

Typical Application Scenarios

Crane operation mechanism: It is widely used in the trolley operation mechanism of various large and medium-sized outdoor cranes and special cranes. It has excellent deceleration braking performance and windproof braking effect. It can ensure the stable positioning of the crane when lifting workpieces and prevent the crane from sliding due to strong winds when it is parked outdoors.

Belt conveyor system: It is suitable for the working braking of belt conveyors in industries such as mines and steel mills. The step-by-step braking method can avoid material backflow or spilling caused by sudden stopping of the conveyor belt, and protect the conveyor belt from damage due to excessive braking impact.

Other industrial equipment: It can also be applied to the braking systems of metallurgical equipment such as continuous casting machines and rolling mills, as well as the braking of port loading and unloading machinery, ensuring the safe and stable operation of the equipment during high-intensity work.

Key Usage Notes

The brake is suitable for working environments with an ambient temperature of -20°C to 50°C, a relative humidity not exceeding 90%, and an altitude not exceeding 2000 meters. It should be avoided to be used in environments with flammable, explosive gases or strong corrosive media. If used outdoors, anti-corrosion modified products should be selected.

During the operation, pay attention to regularly checking the oil level of the E50A thruster and the tightness of the hydraulic pipeline to prevent brake failure caused by oil leakage.

After long-term use, if the braking effect is found to be weakened, first check the wear degree of the brake lining. Once it reaches the limit mark, replace the lining in time to avoid affecting the braking performance.

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