Hydraulic system of excavator working device and excavation control method
A technology of working device and hydraulic system, which is applied in the direction of earth mover/shovel, construction, etc., can solve the problems such as the difficulty of taking into account the full bucket rate and work efficiency, and achieve the effect of improving the excavation efficiency and reducing the difficulty of operation.
Active Publication Date: 2020-02-18
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 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
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[0015] The specific implementation will be described below in conjunction with the accompanying drawings.
[0016] like 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 and an oil tank circuit connected to the boom cylinder 3, arm cylinder 4, and bucket cylinder 7 through the distribution valve 2, and is connected to the control end of the distribution valve 2 for manipulating the boom, stick, The manipulating device for the action of the bucket, the controller 10, the action detection device connected to the controller 10 for acquiring the manipulating action of the manipulating device, the pressure sensor 8 connected to the controller 10 for detecting the pressure in the rod cavity of the boom cylinder, The pressure ...
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The invention relates to excavator hydraulic systems, and provides a hydraulic system of an excavator working device to solve the problem that the fillability and working efficiency cannot be achievedat the same time when an excavator is manually operated for excavation in the prior art. The hydraulic system of the excavator working device comprises a controller, an action detection device, a pressure sensor connected with the controller and used for detecting the pressure in a rod cavity of a boom cylinder, and a pressure relief valve controlled by the controller to release the pressure, wherein the oil inlet end of the pressure relief valve is connected with the rod cavity of the boom cylinder, and the oil outlet end of the pressure relief valve is connected with an oil tank loop; and when the controller detects through the action detection device that a control device only outputs an action control signal for bucket recovery and bucket rod recovery, the controller outputs a controlsignal to control the pressure relief valve to be opened. According to the hydraulic system of the excavator working device, the pressure in the rod cavity of the boom cylinder can be automatically decreased during excavation of an excavator, so that a boom is passively lifted in the excavation process to complete the whole excavation process; and under the condition that the fillability is guaranteed, the excavation efficiency is improved, and the operating difficulty is lowered for operators.
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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Login to View More IPC IPC(8): E02F9/22
CPCE02F9/22
Inventor 李文新董必成梁明孔王茄任刘建
Owner LIUZHOU LIUGONG EXCAVATORS