How To Judge The Quality Of The Wire Rope Electric Hoist?

Oct. 29, 2018

Wire Rope Electric Hoist is a light and small lifting device that can be installed on a variety of cranes such as single beam cranes, bridge cranes, gantry cranes, jib cranes, etc., high efficiency, safe and reliable DC cone brake motor, weight Light, up and down limit stops ensure safety. The lifting speed of wire rope electric hoist is normal speed, which can meet the requirements of general occasions, and is suitable for use in factories, mines, ports, warehouses, goods yards, shops and other places. Then how to judge the sealing performance of the wire rope electric hoist, according to the years of experience of our professional and technical personnel, we have made the following Electric Wire Rope Hoist Manufacturer:

The hoist box is an important part of the wire rope electric hoist, and the box on the other side constitutes the sealed space required for the transmission gear to work, stores the gear lubricating oil, and bears the load from the motor. The motor end cover is an intermediate connection piece. The front end cap of the motor provides a bearing support for the motor and forms a closed space with the motor casing. On the other hand, the motor end cover contacts the hoist box through the four pre-tightening screws of the gasket, and becomes a closed space of the wire rope electric hoist box body. In part, the motor end cover not only bears the function of transmitting the load, but also supports the motor, and realizes the sealing structure between the electric hoist box and the motor end cover of the sealing wire rope between the hoist box and the motor end cover through the mechanical connection. Sexuality directly affects the success or failure of the hoist design. Therefore, the in-depth study of the sealing structure has certain engineering practical significance for the rational design of the electric hoist.

The deformation of the wire rope electric hoist seal and the amount of movement of the gasket directly reflect the sealing performance. The sealing performance of the gasket mainly depends on the thread preload and the vertical bearing capacity of the thread. The thread preload is opposite to the gasket. The influence curve of the displacement and the gap of the gasket, at this time, the vertical load of the wire rope electric hoist motor is the load during normal operation.

It can be seen that with the increase of the thread pre-tightening force, the gap and relative displacement of the gasket are continuously reduced, and the sealing performance is improved. Therefore, the vertical bearing capacity of the wire rope electric hoist is analyzed. The influence curve of the displacement and the gap of the gasket. At this time, the preload of the thread is the standard preload. It can be seen that as the vertical load force increases, the gap between the gasket and the relative displacement increases continuously. When the vertical load reaches 600kn. The maximum clearance of the gasket is 3mm, the maximum relative displacement is 3mm, and the gasket leaks.

Wire Rope Electric Hoist


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