A hydraulic control system and control method for improving energy saving of loader
A technology of a hydraulic control system and a control method, which is applied to earth movers/excavators, construction, etc., and can solve problems such as engine minimum torque limitation and affecting the performance of the whole machine, so as to reduce energy loss, improve utilization rate, and avoid energy loss. wasteful effect
Active Publication Date: 2018-06-12
XCMG CONSTR MACHINERY
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Problems solved by technology
Therefore, the original design is limited by the minimum torque of the engine, and the selection of hydraulic system parameters during the design of the whole machine affects the performance of the whole machine
Method used
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[0025] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0026] Such as figure 1 As shown, the present invention is a hydraulic control system for improving the energy saving of loaders, including a working pump 1, a working device valve group 15, a pilot pump 2, a hydraulic control reversing valve I10, a hydraulic control reversing valve II11, and a pilot relief valve II5 and shuttle valve group 12; the shuttle valve group 12 is arranged on the pilot oil circuit of the working device, and is responsible for collecting the pressure signal of the pilot system of the working device; the hydraulic control reversing valve I10 is arranged between the working pump 1 and the valve group 15 of the working device , the control end of the hydraulic control reversing valve I10 is connected to the o...
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The invention discloses a quantitative work hydraulic system intelligent control system for a loader. The system comprises a hydraulic oil tank, a work pump, a distribution valve, a pilot pump, an intelligent control module, a pilot valve, a rotating bucket oil cylinder and a boom cylinder. The intelligent control module is mainly composed of a first solenoid valve, a second solenoid valve, a first pressure sensor, a second pressure sensor and a controller. An electronic control valve set is integrated by the intelligent control module, and under the condition that the module is not used or the function of the module fails, the manner that a whole machine work hydraulic system works through a traditional control mode is not affected. When the module is used for working, the one-key operation function of the module is adopted, seamless switching between the work device bucket folding movement and the movable arm lifting movement can be intelligently achieved, and automatic unloading of the work hydraulic system is finally achieved. Meanwhile, the labor intensity of loader operating personnel is greatly lowered. The effects that the work hydraulic system saves energy and is efficient, and the combination work state traction force of the loader is increased are achieved.
Description
technical field [0001] The invention relates to a hydraulic system of a loader, in particular to a hydraulic control system and a control method for improving the energy saving of the loader. Background technique [0002] Loaders are earthwork construction machines widely used in roads, railways, mines, construction, hydropower, ports and other projects. Generally, the hydraulic system of the loader includes the working device hydraulic system and the steering hydraulic system. The traditional loader hydraulic system is mainly a dual quantitative hydraulic system, that is, the hydraulic system of the working device and the steering hydraulic system are respectively supplied by quantitative pumps. With the advancement of hydraulic technology and the increasing awareness of energy saving, the hydraulic system of loaders has developed from a dual quantitative system to a fixed variable system and a double variable system. Fixed variable system, that is, the hydraulic system o...
Claims
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IPC IPC(8): E02F9/22
Inventor 吕晓凤赵守明郭文明张永胜韩标杨胜徐尚勇杜晓琳汤志林吴庆伟
Owner XCMG CONSTR MACHINERY