Winding machine with wet-type friction slice clutch having hollow hook lowering function

Abstract

Provided is a hoister of wet friction clutches, which is capable of lowering down sky-hooks and comprises a drum, a wet friction clutch, a planetary speed reducer and a brake connected with the planetary speed reducer. The invention is characterized in that the planetary speed reducer and the wet friction clutch are all disposed inside the drum, a connection shaft of the clutch is connected with a revolvable spline housing of the planetary speed reducer, an outer casing of the clutch is placed at the end portion of the drum through a self-aligning bearing, and the self-aligning bearing is axially positioned by utilizing an end cap. The invention employs the structure that the speed reducer and the clutch are disposed inside the drum, thereby the space inside the drum is taken full use of and the whole hoister has compact structure and attractive appearance. Particularly, because the wet friction clutch structurally connecting normal opening and normal closing is utilized on the hoister, high reliability of normally closing structure and good controllability of normally opening structure are skillfully combined, thereby increasing the speed of lowering down the sky-hook, greatly improving production efficiency and being very safe and reliable. The invention is adaptable for various cranes or the derived equipment thereof.

Description

1. Technical field [0001] The invention relates to a hoist with a wet friction disc clutch used in a crawler crane and having the function of lowering an empty hook. 2. Background technology [0002] The hoist with empty hook lowering function is mainly used in crawler cranes and its derivative products, such as diaphragm walls, draglines, dynamic compaction machines and other equipment. The traditional hoist with empty hook lowering function all adopts band clutch and band brake. Find in use, the deficiency that this clutch and brake exist are: 1, clutch and brake are all not reliable enough, there is clutch slipping, brake slipping phenomenon. 2. Maintenance and adjustment are difficult. 3. The brake band needs to be replaced once a year, half a year or even shorter, and every time the brake band is replaced, production needs to be stopped for 3-4 days to run-in the brake band and the brake drum until the contact area reaches 70 It can work only when it is above %. In ...

AI Technical Summary

Problems solved by technology

In use, it is found that the shortcomings of this clutch and brake are: 1. The clutch and brake are not reliable enough, and there are phenomena of clutch slipping and brake slipping

2. Difficulty in maintenance and adjustment

Otherwise, safe production cannot be achieved

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