Safety Protection Device For 50 Ton Bridge Crane

Safety Protection Device For 50 Ton Bridge Crane
 

(1) Overload protection device for 50 ton bridge crane
Whether the overload protection device is sensitive and reliable, meets the design requirements, whether the opening pressure of the hydraulic overload protection device; whether the comprehensive error of the mechanical, electronic and comprehensive overload protector alarm, and cut off the power source set point meets the requirements.
 

(2) Moment limiter of bridge crane
The moment limiter is a safety device for jib type cranes to prevent over-loading and tipping. Check the sensitivity and reliability of the torque limiter by the method of increasing or increasing the weight, and check whether the comprehensive error of the torque limiter alarm and cut off the set point of the power source is within the specified range.
 

(3) The limit position limiter of the 25 ton bridge crane
Check whether the luffing mechanism, lifting mechanism, and running mechanism of the lifting equipment can generate an alarm signal when they reach the set position distance, and automatically cut off the power source running in the dangerous direction.
 

(4) The windproof device of the bridge crane.
For cranes whose jib root hinge point height is greater than 50 meters, the anemometer should be checked to see if it can accurately alarm when the wind speed set point is reached or when the working limit wind speed is reached.
Cranes operating on the track in the open air should check whether the rail clamps, iron shoes, and anchoring devices are deformed, damaged, and the reliability of their independent work.
For automatic rail clamps, the reliability of the wind protection function and the electrical interlock switch function in the non-anchored state should be checked for the sudden gust wind protection device and the running brake of the cart.
 

(5) The anti-overturning device of the bridge crane
For boom luffing and jib type cranes, check the reliability of the anti-backward device, the sensitivity of the electrical interlock, and check the indication accuracy of the luffing position and amplitude indicator.
 

(6) The buffer of the bridge crane
For cranes with different types of lifting capacity and different operating speeds, check whether the configured buffers match, check the integrity of the buffers, and check whether both ends of the crane can touch the stop at the same time.
 

(7) Protective devices for bridge cranes
Check whether all kinds of protective covers, guardrails, guard plates, ladders, etc. on the crane are complete and reliable, open transmissions exposed on the crane that may cause wounding and wounding; couplings, sprockets, chains, transmission belts and other rotating parts Whether there is a protective cover, whether there is a protective fence for the pedestrian passage on the crane, the ladder and the parts that may cause personnel exposure, and whether it meets the requirements. The electrical equipment of the crane used in the open air shall be equipped with a rain cover.