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Steering hydraulic system and loader

A technology of steering hydraulics and steering gear, which is applied to steering mechanisms, fluid steering mechanisms, power steering mechanisms, etc., which can solve problems such as operational fatigue and achieve the effect of reducing labor intensity

Active Publication Date: 2021-11-09
GUANGXI LIUGONG MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a steering hydraulic system and a loader that can realize fast steering and low labor intensity in view of the problem that the existing loader has a large number of steering turns that easily cause operator fatigue.

Method used

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  • Steering hydraulic system and loader
  • Steering hydraulic system and loader

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Embodiment Construction

[0021] The specific implementation will be described below in conjunction with the accompanying drawings.

[0022] like figure 1 As shown, the steering hydraulic system in this embodiment is the steering hydraulic system of the loader, which includes variable displacement pump 1, electric proportional control valve 4, flow amplification valve 8, steering cylinder 9, fuel tank 12 and other components. The oil tank 12 is used to store the hydraulic oil used in the hydraulic system; the variable variable pump 1 absorbs the hydraulic oil from the hydraulic oil tank 12 and pumps it out from its oil outlet, the load feedback port X on the variable variable pump 1 obtains the load signal, and the variable variable pump 1 according to The load signal pumps the proper flow of hydraulic oil.

[0023] The flow amplifying valve 8 is used to control the expansion and contraction of the steering oil cylinder 9 to realize steering. The flow amplifying valve 8 has an oil inlet HP connected ...

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Abstract

The invention relates to a steering hydraulic system and a loader. In order to solve the problem that the existing loader has too many steering turns and easily cause operational fatigue, it provides a steering hydraulic system, which includes a steering oil cylinder, a flow amplification valve, a steering gear, a steering wheel assembly, and a controller. , steering handle, electric proportional control valve, switching valve; the controller controls the electric proportional control valve to output the corresponding steering pilot pressure signal according to the steering electric signal output by the steering handle, the steering pilot pressure signal output end of the electric proportional control valve and the steering gear The steering pilot pressure signal output port is connected with the steering control port of the flow control valve. In the present invention, in addition to the normal steering operation by turning the steering wheel, the operator can also perform the steering operation by operating the steering handle when the loader frequently turns in a fixed field. Turning by the steering handle has low labor intensity and is suitable for Frequent steering operations.

Description

technical field [0001] The invention relates to a steering control, in particular to a steering hydraulic system and a loader. Background technique [0002] For existing operating machinery, such as loaders, forklifts, etc., such machinery is equipped with a steering hydraulic system, the steering hydraulic system includes a steering gear driven by the steering wheel, a flow amplification valve connected to the steering gear, controlled by the flow amplification valve Steering cylinders, etc. In this type of steering system, the operator achieves steering control by turning the steering wheel. However, for some operating machinery operating in a fixed area, for example, when a loader loads and unloads materials in a mine, its running track is basically fixed, and the steering operation of the loader is also basically fixed. In order to improve the working efficiency of the machine, the loader is usually required to achieve fast steering, which requires the operator to turn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/065B62D5/08
CPCB62D5/065B62D5/08
Inventor 姜炜农棉庚莫雄超梁振国范武德
Owner GUANGXI LIUGONG MASCH CO LTD