What are the protective devices for cranes

The protective devices of cranes are indispensable, and regardless of the type of crane, it is necessary to install protective devices to reduce the occurrence of safety accidents. The general necessary protective devices include overload protection devices, torque limiters, position limiters, wind protection devices, anti rollover devices, buffers, etc. Next, Jianhu County Yangfan Hydraulic Machinery Manufacturing Co., Ltd. will take you to understand how to test whether the performance is good and plays a protective role?
(1) Overload protection device
This is to protect the equipment from overloading, and it needs to comply with the design requirements. Check whether the protection device is sensitive and reliable, and check whether the comprehensive error of the mechanical, electronic, and comprehensive overload protector alarm and power source cutoff set points meet the requirements.
(2) Torque limiter
The torque limiter is a safety device for boom type cranes to prevent overloading and overturning. Check the sensitivity and reliability of the torque limiter through the amplification method or weight increase method, and check whether the error is within the design range.

(3) Position limiter
Check whether the luffing mechanism, lifting mechanism, and operating mechanism of the lifting equipment can generate an alarm signal when they reach the set position distance, automatically cutting off the power source running in the dangerous direction.
(4) Windproof device
Mainly, windproof devices should be installed on outdoor cranes to ensure accurate alarm when the wind speed reaches the set point or when the working wind speed is reached. It is necessary to regularly check whether the components of the rail clamp, iron shoes, and anchoring device are deformed and worn, and whether they affect their performance.
(5) Buffer
This is to avoid collisions and ensure safer operation. For different types of cranes with different lifting weights and operating speeds, it is necessary to check whether the configured buffers match, and to check the integrity of the buffers and whether they can simultaneously touch the stop when running to both ends.