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Hydraulic excavator multi-machine flow limitation system and method

A hydraulic excavator, flow limitation technology, applied to mechanically driven excavators/dredgers, earth movers/shovels, construction, etc., can solve the problems of time-consuming and labor-intensive, and achieve the effect of protecting equipment

Pending Publication Date: 2017-09-22
XCMG EXCAVATOR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional way is to set the flow rate by changing the program parameters and refreshing the controller program, which requires professionals to modify the program and flash the program, which is time-consuming and labor-intensive

Method used

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  • Hydraulic excavator multi-machine flow limitation system and method
  • Hydraulic excavator multi-machine flow limitation system and method

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Embodiment Construction

[0018] The technical solutions of the present invention will be further described through specific embodiments below in conjunction with the accompanying drawings.

[0019] Such as figure 1 , figure 2 As shown, a hydraulic excavator multi-tool flow limiting system includes a quick-change switch 1, a quick-change solenoid valve 2, an electromagnetic proportional pressure reducing valve 4, a main pump 5, multi-function tools 6, a controller 7, and an electronic monitor 8 , switch solenoid valve group 9; controller 7 is electrically connected with electromagnetic proportional pressure reducing valve 4, quick-change solenoid valve 2 and switch solenoid valve group 9, and quick-change switch 1 is electrically connected with quick-change solenoid valve 2; electronic monitor 8 It is connected with the controller 7 through the CAN bus; the main pump 5 is connected with the electromagnetic proportional pressure reducing valve 4 through a hydraulic pipeline, and the flow through the m...

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PUM

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Abstract

The invention discloses a hydraulic excavator multi-machine flow limitation system and method. The system comprises a quick change switch, a quick change electromagnetic valve, an electromagnetic proportional pressure reducing valve, a main pump, a multifunctional machine, a controller, an electronic monitor and a switch electromagnetic valve set. The controller is electrically connected with the electromagnetic proportional pressure reducing valve, the quick change electromagnetic valve and the switch electromagnetic valve set. The quick change switch is electrically connected with the quick change electromagnetic valve. The electronic monitor is connected with the controller through a CAN bus. The main pump is connected with the electromagnetic proportional pressure reducing valve through a hydraulic pipeline, and through flow changes of the main pump, the multifunctional machine is limited to work under the proper flow condition. Through the system and method, the multifunctional machine can be switched rapidly, multi-machine flow limitation is achieved, the purpose of machine protection is achieved, and a professional does not need to write and refresh a program again.

Description

technical field [0001] The invention relates to a hydraulic excavator multi-tool flow limiting system and method, belonging to the field of excavators. Background technique [0002] In the current excavator market, excavators are required to be applicable to more and more working conditions, and the application of various tools is becoming more and more frequent. When assembling different tools, the output flow rate of the pump is the same due to the different flow specifications of the tools. Under this flow rate, the machine tools with smaller flow specifications will run faster, and the tools will withstand large impacts and are easily damaged. At this time, the controller needs to output different current values ​​to control the opening of the electromagnetic proportional pressure reducing valve spool, thereby changing the output flow of the main pump and limiting the maximum flow into the implement. The traditional way is to set the flow rate by changing the program pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F3/96E02F9/22
CPCE02F3/96E02F9/2221E02F9/226
Inventor 石晓妹耿家文孟凡建刘凯李亚东宋吉杨晓磊董步军董玉忠马鑫
Owner XCMG EXCAVATOR MACHINERY
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