Intelligent shock absorption hydraulic control method and control system of excavator

A technology of intelligent shock absorption and control method, which is applied in the direction of earth mover/shovel, construction, etc., can solve the problems of large impact of excavator and poor operation experience, so as to reduce hydraulic impact, reduce vibration of the whole machine, and solve the problem of Larger vibration effect of the whole machine

Active Publication Date: 2017-05-24
LIUZHOU LIUGONG EXCAVATORS +2
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an intelligent shock-absorbing hydraulic control method and control system for an excavator that can reduce the vibration of the whole machine and improve the operating comfort in view of the problems of large impact and poor operating experience of the existing excavator

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  • Intelligent shock absorption hydraulic control method and control system of excavator

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Embodiment Construction

[0023] The specific implementation will be described below in conjunction with the accompanying drawings.

[0024] like figure 1 As shown, the excavator intelligent damping hydraulic control system includes left pump 11, right pump 10, stick cylinder control valve, boom cylinder control valve, bucket cylinder control valve, right pilot valve 17, left pilot valve 22; Controller, boom lifting pilot pressure sensor 15 connected to controller 12, bucket recovery pilot pressure sensor 16, stick recovery proportional solenoid valve 18, stick opening proportional solenoid valve 19, stick recovery pilot pressure sensor 20, stick Open the pilot pressure sensor 21; the arm cylinder control valve includes the arm confluence valve 3 and the arm control valve 5; the boom cylinder control valve includes the boom control valve 14 and the boom confluence valve 7; the pump port of the right pump 10 passes through a The one-way valve is connected with the working oil inlet of the arm control v...

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Abstract

The invention relates to hydraulic methods of excavators, aims to solve the problem that a conventional excavator is high in impact and relatively poor in operation experience, and provides an intelligent shock absorption hydraulic control method and control system of an excavator. The control method is characterized in that information like main pump pressure and pilot pressure signals is acquired through sensors, main pump pressure and pilot pressure are compared with preset pressure, a bucket rod confluence valve of the excavator is controlled through an electric proportional valve, logical judgment is carried out according to the action of an operator during operation of the excavator, when the excavator operates on uneven ground, through changing of an output current of the electric proportional valve, the motion speed of the bucket rod confluence valve is adjusted, the opening characteristic of a valve core is adjusted, hydraulic impact is reduced, and the effects of decreasing acceleration at stall of a working device and reducing vibration of the entire machine are achieved.

Description

technical field [0001] The invention relates to an excavator hydraulic system, and more specifically relates to an excavator intelligent damping hydraulic control method and control system. Background technique [0002] For a long time, excavator users and manufacturers have focused on excavator products in terms of fuel consumption, work efficiency and reliability. Except for some high-end markets in Europe and the United States, the domestic market has not paid much attention to the operating comfort of excavators. ask for more. However, with the development of the domestic excavator industry becoming more and more mature, the application conditions of excavators are more diverse. In addition to the above three indicators, domestic users have higher and higher requirements for the operation comfort of the whole machine, which has become a factor that affects the purchase willingness. An important factor. At present, during the working process of our machine, especially wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/22
CPCE02F9/2207
Inventor 王茄任李文新梁明孔董必成赵明辉刘建
Owner LIUZHOU LIUGONG EXCAVATORS
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