Hydraulic execution mechanism, hydraulic execution method and excavator
A technology of executive mechanism and execution method, which is applied in the direction of mechanically driven excavators/dredgers, etc., can solve the problems that affect the progress of the project, the slow lifting speed of the boom, and the inability to fully exert the lifting capacity of the boom, etc., to achieve fast lifting speed , The effect of fast operation speed
Inactive Publication Date: 2011-07-20
DOOSAN INFRACORE CHINA
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Problems solved by technology
[0005] However, when the excavator is performing excavation tasks, if the oil circuit is always equally supplied to the lifting and turning of the boom, the lifting capacity of the boom cannot be fully utilized without increasing the capacity of the actuator.
Especially in the case of deep excavation operations, the slow lifting speed of the boom will affect the progress of the entire project
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[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the specific embodiments will be described in detail below in conjunction with the accompanying drawings.
[0023] excavator
[0024] See figure 1 , The excavator 10 according to the embodiment of the present invention is explained. figure 1 It is a schematic diagram showing an excavator 10 according to an embodiment of the present invention.
[0025] Such as figure 1 As shown, the excavator 10 mainly includes a main body 100, a base 200, a boom 300, a hydraulic actuator 400 (not shown), a bucket 500, and the like. Except for the hydraulic actuator 400, the design details of other components of the excavator 10 can be referred to the publication "Hydraulic Excavator" mentioned above by those skilled in the art, so it will not be repeated here.
[0026] In addition, those skilled in the art should understand that, under the control of the hydraulic actuator 400, in o...
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The invention discloses a hydraulic execution mechanism and a hydraulic execution method for controlling the lifting and rotating composite action of a large arm of an excavator, and the excavator. The excavator at least comprises a main body, a base, the large arm and the hydraulic execution mechanism, wherein the hydraulic execution mechanism at least comprises a controller, a hydraulic pump, a large arm lifting execution part, a rotating action execution part, and a multi-position multi-way reversing valve; and when the hydraulic execution mechanism controls the lifting and rotating of the large arm of the excavator simultaneously, the reversing valve limits hydraulic pressure provided for the rotating action execution part by the hydraulic pump, and increases hydraulic pressure provided for the large arm lifting execution part by the hydraulic pump simultaneously; and through the reversing valve with an intercepting function, hydraulic pressure supplied to rotating action by the hydraulic pump is reduced, so that more hydraulic pressure can be provided for the lifting action of the large arm on the premise of not increasing the capacity of the hydraulic pump, and the lifting action of the large arm is prior to the rotating action of the large arm.
Description
Technical field [0001] The present invention relates to an engineering machine, in particular to an excavating equipment, and in particular to a hydraulic actuator, a hydraulic actuator method, and a hydraulic actuator that control how the boom lifting speed is prioritized relative to the slewing speed in the compound action of the excavator. Actuator of excavator. Background technique [0002] Currently, various types of excavators are mainly used to excavate earth and stone for construction work such as excavating sand and gravel, building dams, and clearing river courses. Because excavators have the characteristics of large digging force and high work efficiency, they can be widely used in most engineering construction sites, such as mines, buildings, transportation, water conservancy, airports, demolition and reconstruction, urban construction and other occasions. [0003] Generally, an excavator is mainly composed of an engine (for example, a motor), a power system (for examp...
Claims
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IPC IPC(8): E02F3/42
Inventor 朱基准王大为卢东玲
Owner DOOSAN INFRACORE CHINA