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Excavator working device hydraulic system and excavation control method

A technology for working devices and excavators, which is applied to earth movers/shovels, construction, etc. It can solve the problems of difficulty in balancing the full bucket rate and work efficiency, and achieve the effect of improving excavation efficiency and reducing operation difficulty

Active Publication Date: 2022-03-01
LIUZHOU LIUGONG EXCAVATORS +2
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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 an excavator working device hydraulic system and an excavation control method for the problem that the existing excavator is difficult to balance the full bucket rate and work efficiency in the manual operation excavation process, so as to improve the excavator's excavation efficiency. In the process of manual operation and excavation, the full bucket rate and work efficiency of excavator excavation are taken into account

Method used

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  • Excavator working device hydraulic system and excavation control method
  • Excavator working device hydraulic system and excavation control method
  • Excavator working device hydraulic system and excavation control method

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Experimental program
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Embodiment 1

[0018] Such as figure 1 As shown, the working device of the excavator includes a boom hinged on the frame, an arm hinged at the front end of the boom, and a bucket connected at the lower end of the arm. The hydraulic system of the excavator working device such as figure 2 As shown, it includes a high-pressure oil source 1 (excavator main pump) and an oil tank circuit connected to the boom cylinder 3, arm cylinder 4, and bucket cylinder 7 via the distribution valve 2, and is connected to the control end of the distribution valve 2 for manipulation. Boom, arm, bucket action control device, controller 6, action detection device used to obtain the control action of the control device and connected to the controller 6, connected to the controller 6 to detect the rod cavity of the boom cylinder The boom cylinder of pressure has a pressure sensor 10 in the rod cavity. The oil tank circuit is connected with the hydraulic oil tank 1.

[0019] Such as figure 2 As shown, the hydrau...

Embodiment 2

[0028] Such as image 3 As shown, the hydraulic system of the working device of the excavator in this embodiment is an electronically controlled pilot hydraulic control system. Compared with Embodiment 1, in the hydraulic system of the working device of the excavator in this embodiment, the operating device includes an electric control handle 11 connected to the controller 6, which is respectively arranged between the arm-linked reversing valve and the pilot oil source in the distribution valve. The bucket-linked proportional electromagnetic valve 26 connected to the controller on the pilot control oil circuit and the arm-linked proportional electromagnetic valve connected to the controller on the pilot control oil circuit between the liquid control end of the bucket-linked reversing valve and the pilot oil source The valve 25; the motion detection device is the electric control handle 11; the controller 6 estimates the manipulation action performed by the manipulation device ...

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Abstract

The invention relates to a hydraulic system of an excavator. In order to solve the problem that the existing excavator is difficult to balance the full bucket rate and work efficiency in the process of manually operating the excavation, it provides a hydraulic system for the working device of the excavator, which obtains the control of the control device through the action detection device Action and boom oil cylinder has rod chamber pressure, when the excavator is digging and the boom has rod chamber pressure is greater than the predetermined value, the boom oil circuit is controlled to realize the automatic lifting of the boom to complete the excavation work. During the excavation process, the excavator of the present invention automatically lifts the boom to complete the excavation operation, completes the entire excavation process, improves the excavation efficiency and reduces the operator's difficulty in operation while satisfying the bucket full rate.

Description

technical field [0001] The present invention relates to an excavator hydraulic system, more specifically, relates to an excavator working device hydraulic system and an excavation control method. Background technique [0002] When the excavator is performing excavation operations, the operator controls the bucket cylinder, stick cylinder and boom cylinder by operating the arm to complete bucket recovery, stick recovery and boom lifting. Actions such as bucket recovery, arm recovery, and boom lifting are compound actions during the excavation process, that is, the operator must control and complete them at the same time during the excavation process. These current processes are all completed by the operator's observation and experience, especially the operation of boom lifting, which directly affects the excavation full rate and excavation efficiency. If the lifting is early, the full rate is low; otherwise, the excavation efficiency Low. Contents of the invention [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F9/20E02F9/22
CPCE02F9/20E02F9/2004E02F9/22
Inventor 李文新董必成梁明孔王茄任刘建
Owner LIUZHOU LIUGONG EXCAVATORS