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Precautions for the use of group crane electric hoists
Electric hoists that are newly installed or installed after disassembly and inspection should first be tested with no load for several times. . However, do not turn on the power for a test run before the installation is complete.
Before normal use, the electric hoist should be subjected to a static load test at rated load, lifting about millimeters and minutes from the ground, and checked to see if it is normal.
The dynamic load test of the electric hoist is based on the rated load weight and repeated lifting and left-right movement tests. After the test, check whether the mechanical transmission part, electrical part and connecting part are normal and reliable.
When using an electric hoist, it is absolutely prohibited to use it in an environment that is not allowed, or when the rated load and rated closing times per hour are exceeded.
When installing, debugging and maintaining the electric hoist, it is necessary to strictly check whether the limit device is flexible and reliable. When the hook is raised to the upper limit position, the distance from the hook shell to the drum shell must be greater than, must be greater than). When the hook is lowered to the lower limit position, the safety circle of the wire rope on the drum should be ensured. The effective safety circle must be above the circle.
It is not allowed to press two flashlight door buttons at the same time to make the electric hoist move in opposite directions.
After completing the work of lifting the electric hoist, the main switch of the power supply must be opened and the power supply must be cut off.
The electric hoist should be operated by a dedicated person. The operator should fully understand the safe operating procedures. It is strictly forbidden to pull or lift at an angle.
During the use of the electric hoist, specialized personnel must regularly inspect the electric hoist, take timely measures if any faults are found, and record them carefully.
When adjusting the braking sliding amount of the electric hoist for group crane, it should ensure that the braking sliding amount / (is the stable lifting distance of the load within one minute) under the rated load.
Group crane electric hoist | Electric reverse chain structure principle consists of three parts: group crane electric hoist, three-phase disc brake motor and planetary gear reducer. Transmission Principle: The rotation of the motor of the climbing frame hoist is reduced through the reducer, and the speed and power are output to raise or lower the hook under the chain hoist. When the motor of the climbing frame hoist is powered off, it relies on the braking of the braking motor and uses the hook under the hoist to stop working, and the heavy object stops at a certain position. Baoding Liyou Hoisting Machinery Manufacturing Co., Ltd. specializes in production.