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22
2019-05
Safety Technical Requirements for Box Single Girder Crane:1. Drivers need to inspect the safety devices and main parts of cranes before operation to ensure that they can operate normally.2. Operators should stop immediately when receiving d...
15
2018-06
1. The operator of jib crane should check the switch button and wire rope limit before using. If there is a problem, it should be repaired in time before it can be used. The power switch must be turned off before leaving.2. When lifting the...
15
2018-06
I. No-load testStart the clicks of each body separately, so that the arm rotates for two to three weeks in time and counter-time, and no abnormal phenomena occur during operation. The horizontal running of the chain hoist or electric hoist ...
15
2018-06
1. Clean the appearance of the crane and the inside and outside of the cab to achieve neatness and cleanliness.2. Check the lifting device and the components of the wire rope winding system, and eliminate the defects, so as to meet the requ...
15
2018-06
Inspection contents:1. Whether the motor, reducer, brake frame, coupling and fixing bolt of the transmission system are loosened, whether the operation is normal, whether there is noise. (See)2. Whether the brake limit devices of lifting, c...
15
2018-06
1. Check the brake, hook, wire rope and safety device of the crane according to the requirement of spot check card, and find out the abnormal signs, which should be excluded.2. The operator must confirm that no one is on the platform or on ...
15
2018-06
1. First of all, we should investigate the actual situation of the construction site in depth, draw up the resource plan of materials, machines and other installation, contact the storage, transportation, stacking and use of cantilever susp...
15
2018-06
I. LubricationThe working performance and service life of crane mechanism largely depend on lubrication.When lubricating, the maintenance and lubrication of mechanical and electrical products should refer to their own instructions. Grease s...
15
2018-06
(1) When a three-phase asynchronous motor is connected to a three-phase AC power supply (120 degrees electric angle difference between each phase), the three-phase stator winding flows through the three-phase symmetrical current and generat...
15
2018-06
The components of electric wire rope hoist are motor, transmission mechanism, drum and wire rope. According to the different positions of motor and drum, it can be roughly divided into four types.(1) The electric hoist whose axis of motor i...
15
2018-06
1. Before working, the driver should carefully inspect the safety devices and main parts of the crane to ensure that they are flexible and reliable for use.2. Operators must follow the command signal of the commander to operate, and emergen...
15
2018-06
(1) Bridge cranes with main and auxiliary hooks should not rise or fall simultaneously (with special exceptions).(2) No welding or hammering is allowed on the lifted object and work under the object (if supported).(3) Inspection or maintena...
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