What is the content of the crane's regular inspection?
(1) Weekly inspection
A. Regular inspections are carried out every week. The problems found in the inspections should be dealt with mainly by the driver, and those that cannot be dealt with by the driver will be handed over to the maintenance team for treatment.
Common faults of bridge cranes and their troubleshooting methods——
Common faults in mechanical transmission
1. The brake does not work well (the braking torque is small, the hook slipping phenomenon occurs in the hoisting mechanism) The car slipping phenomenon occurs in the running mechanism. The reason analysis and its solution are described as follows.
What is the scrap standard for crane wire rope?
Answer: The scrapping standards for wire ropes are as follows:
(1) According to the GB6067-85 standard, when the safety factor is less than 6, the number of scrapped and broken wires of the alternately twisted wire rope is about 10% of the total number of wires in the wire rope. When the safety factor is 6~7, the number of scrapped and broken wires is about When the safety factor is greater than 7, the number of scrapped and broken wires is about 14% of the total number of wire ropes.
(1) The driver should concentrate on operation, pay close attention to the surrounding situation, and must not do anything unrelated to work.
(2) In one of the following situations, the driver should not operate:
The bridge crane is analyzed from 7 aspects that can cause mechanical failure, such as wire rope, drum and wire rope pressure plate, hook, reducer gear, brake, wheel and rail and safety accessories, and proposes measures to prevent mechanical failure of the crane. and recommendations.
Load test is an important indicator to test the quality and safety of lifting machinery products. Through the load test, not only the deformation of the metal structure of the crane, such as the deflection value of the bridge crane, but also the safety device of the crane can be detected. Effective conditions, such as overload limiter, action protection of the moment limiter of the tower crane under the rated load state, etc. In conclusion, load tests are extremely important for checking the structural bearing capacity of the crane and its components, the crane's welds, cracks, permanent deformation, loose connections, the effectiveness of safety devices, and damage that affects the performance and safety of the crane. .