What are the protection devices of the crane?
The protection device of the crane is indispensable, no matter what type of crane, it is necessary to install the protection device to reduce the occurrence of safety accidents. Generally, the necessary protection devices include overload protection device, torque limiter, limit position limiter, wind protection device, anti-backturning device, buffer, etc. How to check whether the performance is good or not, and play a protective role?
(1) Overload protection device
This is to protect the equipment from overloading. It needs to meet the design requirements. Check whether the protection device is sensitive and reliable. Check whether the mechanical, electronic and comprehensive overload protector alarms and cuts off the power source set point to meet the requirements.
(2) Torque limiter
Moment limiter is a safety device for boom type cranes to prevent over-loading and tipping. Check the sensitivity and reliability of the torque limiter through the increase method or the weight increase method, and check whether the error is within the design range.
(3) Limit position limiter
Check whether the luffing mechanism of the lifting equipment, the lifting mechanism, and the running mechanism can generate an alarm signal when the distance to the set position is reached, and automatically cut off the power source running in the dangerous direction.
(4) Windproof device
Mainly, outdoor cranes should be equipped with wind-proof devices, and whether they can accurately alarm when the wind speed set point is reached or when the working limit wind speed is reached. It is necessary to frequently check whether the rail clamps, iron shoes, and anchoring devices are deformed and worn, and whether they affect the performance.
(5) Buffer
This is to avoid collisions and operate more safely. For cranes with different types of lifting weights and different operating speeds, check whether the buffers are matched, and check the integrity of the buffers and whether they can run at the same time at both ends. Touch the stop.
