Control method and control system of a bulldozer
A control method and technology of bulldozers, which are applied to earth movers/shovels, mechanically driven excavators/dredgers, construction, etc., can solve problems such as stuck faults of electronically controlled variable speed valves and electronically controlled steering valves, and achieve The effect of solving stuck faults, low maintenance frequency and low operation failure rate
Active Publication Date: 2019-06-18
SHANTUI CONSTR MASCH CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to propose a control method and control system for a bulldozer, which solves the problem of stuck failure of the existing electronically controlled variable speed valve and electronically controlled steering valve
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[0041] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0042] Preferred embodiment:
[0043] This preferred embodiment discloses a control system of a bulldozer. Such as figure 1 with figure 2 As shown, the control system includes a controller, an electronically controlled steering valve and an electronically controlled transmission valve electrically connected to the controller.
[0044] The electronically controlled steering valve includes a left brake proportional valve (LB proportional valve), a left steering proportional valve (LC proportional valve), a right brake proportional valve (RB proportional valve) and a right steering proportional valve (RC proportional valve), which are electrically connected to the controller. proportional valve);
[0045] The electronically controlled transmission valve includes proportional valves for gear 1, pro...
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The invention discloses a control method and system for a bulldozer, belongs to the technical field of control methods and systems for bulldozers, and is designed for solving the problem of jamming faults of existing electronic control speed change valves and electronic control conversion valves. The control method for the bulldozer comprises the following steps: after speed change operation of an electronic control speed change valve is finished, feeding back an electric signal to a controller through a corresponding sensor and then judging whether a jamming regeneration procedure of the electronic control speed change valve needs to be started or not; and / or after conversion operation of an electronic control conversion valve is finished, feeding back the electric signal to the controller through a corresponding sensor and then judging whether a jamming regeneration procedure of the electronic control conversion valve needs to be started or not. By the control method for the bulldozer, the problem of jamming faults of existing electronic control speed change valves and electronic control conversion valves is solved. The invention further provides a control system based on the control method.
Description
technical field [0001] The invention relates to the technical field of bulldozer control methods and systems, in particular to a bulldozer control method and control system. Background technique [0002] The working environment of the bulldozer is harsh, the iron filings generated by the friction of the transmission system, the particles that have not been cleaned thoroughly during the processing and manufacturing process, and the impurities brought in during maintenance, etc., all lead to low cleanliness of the transmission system oil. As the core components of bulldozers, shift valves and steering valves play an important role in the walking system. Traditional mechanical control shift valves and steering valves often have stuck valve failures during use. Experienced operators usually forcefully switch the operating lever back and forth, pushing and pulling the main spool, in order to overcome the sticking resistance and restore the normal operation of the spool. , to a c...
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IPC IPC(8): E02F3/85
CPCE02F3/84
Inventor 刘春朝姜友山宋金宝金轲赵建军
Owner SHANTUI CONSTR MASCH CO LTD