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Excavator multifunctional machine tool flow and pressure control system

A pressure control, excavator technology, applied in the direction of earth mover/shovel, construction, etc., can solve the problems of limited adjustment range of its value, complicated operation, difficult to control accurately, etc., to achieve simple and reliable adjustment and accurate Sexual control, the effect of meeting the requirements of use

Pending Publication Date: 2018-04-24
XCMG EXCAVATOR MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operation is more complicated, and the scope of use of multiple excavator tools is limited. The reason is that the traditional flow and pressure adjustment methods have a limited value adjustment range, and it is difficult for ordinary operators to control the system flow through the engine speed. control

Method used

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  • Excavator multifunctional machine tool flow and pressure control system

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] Such as figure 1 As shown in the figure, a flow and pressure control system for excavator multifunctional implements includes a main pump 1, a main control valve 2, a one-way implement 3, a proportional overflow valve 4, a two-way implement 5, a stop valve 6, and a hydraulic control reversing valve 7. Solenoid valve group 8, two-way foot valve 9, hydraulic oil tank 10, current limiting solenoid valve 11, control panel, main controller, hydraulic pipeline and electrical wiring harness; the main pump 1, main control valve 2, proportional overflow Flow valve 4, cut-off valve 6, hydraulic control reversing valve 7, solenoid valve group 8, two-way foot valve 9, hydraulic oil tank 10, and flow-limiting solenoid valve 11 are communicated through hydraulic pipelines. The main controller has four signal output ports, and the four signal output ports are respectively con...

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PUM

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Abstract

The invention discloses an excavator multifunctional machine tool flow and pressure control system. The system comprises a main pump, a main control valve, a current-limiting electromagnetic valve, anelectromagnetic valve set, a bidirectional foot valve, a hydraulic control reversing valve, a proportional overflow valve, a stop valve, a one-way machine tool, a bidirectional machine tool, a hydraulic oil tank, a main controller, a control panel and related hydraulic pipelines and electric wire harnesses; and the control panel transmits electrical signals to the main controller, and the main controller separates out four paths of current signals to control the proportional overflow valve, the current-limiting electromagnetic valve, and an A1-connected electromagnetic valve and an A2-connected electromagnetic valve of the electromagnetic valve set correspondingly. According to the system, on the basis of an original multifunctional machine tool hydraulic pipeline, the electro-hydraulic proportional technology and the electric control technology are combined, so that the accurate control over the hydraulic system flow and pressure is realized, the operator only needs to manually inputthe required flow and pressure values on the control panel, and then the system can be used by the different machine tools.

Description

technical field [0001] The invention relates to a flow and pressure control system for a multifunctional machine tool of an excavator, in particular to a control system with multiple special machine tool functions and adjustable flow and pressure, and belongs to the technical field of excavators. Background technique [0002] At present, in the traditional multifunctional machine tool system, the flow control is generally controlled by controlling the engine speed to control the flow rate, and the overflow pressure is adjusted by manually adjusting the port overflow valve. The operation is more complicated, and the scope of use of multiple excavator tools is limited. The reason is that the traditional flow and pressure adjustment methods have a limited range of value adjustment, and it is difficult for ordinary operators to control the system flow through the engine speed. control. Contents of the invention [0003] Purpose: In order to overcome the deficiencies in the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/22
CPCE02F9/22E02F9/2221
Inventor 简立瑞耿家文杨晓磊张马永刘邓尹超崔广伟张升霞王禄孙本强孙忠永
Owner XCMG EXCAVATOR MACHINERY
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