A hoisting reducer for truck cranes with self-aligning function

Abstract

The invention discloses a novel winch speed reducer for an automobile crane and with a self-aligning function, and belongs to the field of machine manufacturing. The novel winch speed reducer comprises a speed reducer, a special sphere outer ring deep groove ball bearing, a spherical bearing supporting base, an inner gear, a winding drum and a right end support with a self-aligning bearing. The winch speed reducer is improved on the basis of the winch speed reducer of the conventional structure, the inner gear and the winding drum are connected through a short gear coupling floating mechanism in floating mode instead of being fixedly connected like that of the winch speed reducer of the convention structure, and gear meshing of the speed reducer can be ensured to be constantly in the correct meshing state. Simultaneously, the special sphere outer ring deep groove ball bearing is adopted so that the rotation axis of the winding drum has a large angle displacement adjustment capability, and harmful stress attached to the bearing can be removed. Compared with the conventional winch speed reducer with the same specification, the novel winch speed reducer has the advantages of being simple in production process, reliable in performance, low in production cost, capable of being prolonged in service life for more than two times and the like.

Description

technical field [0001] The invention belongs to the field of machinery manufacturing, and in particular relates to a hoisting reducer for a truck crane with a self-aligning function. Background technique [0002] The reducer is a mechanical transmission device in many fields of the national economy. The product categories involved in the industry include various gear reducers, planetary gear reducers and worm reducers, as well as various special transmission devices. The product service field involves metallurgy, nonferrous metals , coal, building materials, ships, water conservancy, electric power, construction machinery and petrochemical industries. Hoisting reducer is a kind of reducer, which is mainly used in all kinds of hoisting machinery. Its characteristic is to use gears and planetary gears as speed converters to reduce the number of revolutions of the motor to the desired number of revolutions and obtain a larger As a torque mechanism, the main functions of the wi...

AI Technical Summary

Problems solved by technology

Conventional structure Since the bearing support and internal gear of the reducer are fixedly connected with the reel, the bearing support of the reducer and the internal gear are firmly connected with the reel, so the coaxiality of the two holes of the hoisting reducer mounting bracket The requirements are extremely high. Due to the limitation of the process capability in the processing of the reduction box frame of the automobile crane, welding after finishing is mostly used, and the deformation is serious, which makes it difficult to improve the processing accuracy of the hoisting case. It has become a technical issue that is difficult to break through in the automobile crane industry today.

If the processing accuracy of the winch case is not high, it will directly cause the rotation axis of the drum to tilt, and the tilt of the rotation axis of the drum will cause the bearing support and the rotation axis of the internal gear that are fixedly connected to it to also tilt at the same time, resulting in gears and bearings in operation. The increase of local additional harmful stress will lead to the increase of local wear of the bearing of the reducer, the reduction of efficiency, the increase of abnormal noise due to uneven contact on the tooth surface of the gear, and the failure and damage of the gear and bearing due to the local rapid wear of the gear and bearing.

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