A control mechanism of a bulldozer steering clutch

Abstract

The invention relates to the technical field of hydraulic transmission, in particular to a control mechanism of steering clutches of a bulldozer. The control mechanism comprises a valve body and glands which are arranged at the two ends of the valve body in a sealed mode. A left control valve and a right control valve are arranged in the valve body, and hydraulic pilot control is used by the left control valve and the right control valve. After the bulldozer is started, an oil pump provides hydraulic pilot oil to a left oil-impregnated rod and a right oil-impregnated rod, the left steering clutch and the right steering clutch are made to keep linkage, according to steering requirements of the steering clutches, the hydraulic pilot oil in the left oil-impregnated rod or the right oil-impregnated rod is interrupted, a valve element moves relative to a valve base, and accordingly the supply and interruption of oil liquid of the steering clutches are achieved. During the movement, the control mechanism requires a small quantity of hydraulic oil, and is fast in motion, precise in positioning, high in reliability and long in service life, the arrangement of a steering tiller of the bulldozer is made more free and flexible, and the control mechanism provides an effective technical scheme for hydraulic, electrohydraulic and automatic control over the steering clutches.

Description

technical field [0001] The invention relates to the technical field of hydraulic transmission machinery, and is suitable for steering systems of steering clutches used in construction machinery, construction machinery, agricultural and forestry machinery, and vehicles, and is particularly suitable for steering systems of steering clutches used in bulldozers. Background technique [0002] The reversing actuator of the steering clutch used in the existing bulldozer is generally a rigid link mechanism. This type of steering mechanism has many transmission "nodes", the steering handle has a large operating space, and there are many joint mechanisms, which makes assembly and adjustment difficult. The efficiency is low, the steering operation is "heavy", and frequent steering during operation will easily cause tension and fatigue of the operator. The working conditions of the bulldozer are harsh, and the wear amount of the joint bearing of the connecting rod mechanism is large. Wh...

AI Technical Summary

Problems solved by technology

[0002] The reversing actuator of the steering clutch used in the existing bulldozer is generally a rigid link mechanism. This type of steering mechanism has many transmission "nodes", the steering handle has a large operating space, and there are many joint mechanisms, which makes assembly and adjustment difficult. The efficiency is low, the steering operation is "heavy", and frequent steering during operation will easily cause tension and fatigue of the operator

The working conditions of the bulldozer are harsh, and the joint bearings of the connecting rod mechanism wear a lot. When the adjustment is not timely or the maintenance is not in place, sometimes the steering is not in place, resulting in a rapid decline in the service life of the steering clutch or damage. The positioning mechanism of the clutch steering system can be divided into linkage mechanism, hydraulic and electric control, etc. according to the different operation methods. Generally, these three operation methods cannot be easily integrated.

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