Lubricating oil inner cavity self-filtering speed reducer used on lorry-mounted crane lifting hoist

Abstract

The invention discloses a lubricating oil inner cavity self-filtering speed reducer used on a lorry-mounted crane lifting hoist, and relates to engineering machinery. A two-way inner gearing gear pump is arranged in a large flange inner hole. The gear pump is connected with a brake connection shaft through an internal spline to obtain power. The gear pump is provided with an oil inlet A and an oil outlet B. When the lifting hoist goes up and down, the gear pump is steered along the positive direction and the negative direction. For the gear pump, under the control of a one-way valve, functions of the oil inlet A and the oil outlet B change. Two filters are connected outside the speed reducer to filter lubricating oil in an uninterrupted mode. The filtered lubricating oil enters into a variable speed component (11) box body through a pipe. The filtering effect is good, and the service life of the speed reducer is prolonged greatly. The early failure response rate is reduced effectively. The volume of the speed reducer is not increased basically. The structure is compact, the manufacture and the installation are convenient, the cost is low, and the popularization is convenient.

Description

technical field [0001] The invention relates to an engineering machine, in particular to a lubricating oil cavity self-filtering reducer used on a car hoisting hoist. It can also be used in the hoisting, luffing, slewing and traveling deceleration mechanisms of construction machinery such as crawler cranes and excavators. Background technique [0002] The reducer used on the hoist of the car hoist, the gears in the working process, due to the iron filings and oxide scales generated by the gear meshing friction, if they are not removed in time, the life of the bearings and rotary oil seals will be affected. Especially when the load is heavy, pitting corrosion will occur prematurely on the inner and outer rings of the bearing and gears, and defects such as accelerated tooth surface wear will occur. The lubricating oil in the inner cavity of the gear is regularly replaced in the reducer used on the hoisting hoist of the automobile at present. The disadvantage is that it needs ...

AI Technical Summary

Problems solved by technology

[0002] The reducer used on the hoist for automobile hoisting, the gears during the working process, the iron filings and oxide scales produced by the gear meshing friction, if not removed in time, will affect the life of the bearings and rotary oil seals

Especially when the load is heavy, it will cause early pitting corrosion on the inner and outer rings of the bearing and gears, and accelerate the wear of the tooth surface.

The lubricating oil in the inner cavity of the gear is regularly replaced in the reducer used on the hoisting machine of the automobile at present. The disadvantage is that it needs to be shut down when changing the oil, and the workload of waste oil recovery is large, and the consumption of lubricating oil is large. cost

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