Hydraulic execution mechanism, hydraulic execution method and excavator
An actuator and excavator technology, which is applied to mechanically driven excavators/dredgers, etc., can solve problems such as affecting the progress of the project, slow boom lifting speed, inability to fully exert the boom lifting capacity, etc., and achieve fast lifting speed. , the effect of fast work speed
Inactive Publication Date: 2012-09-05
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] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, specific embodiments will be described in detail below with reference to the accompanying drawings.
[0023] excavator
[0024] see figure 1 , illustrating an excavator 10 according to an embodiment of the present invention. figure 1 is a schematic diagram showing the excavator 10 according to the 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), and a bucket 500 . Except for the hydraulic actuator 400, those skilled in the art can refer to the above-mentioned publication "Hydraulic Excavator" for design details of other components of the excavator 10, so details 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...
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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, alarge 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 thelarge 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 a kind of engineering machinery, especially a kind of excavating equipment, especially to a hydraulic actuator, a hydraulic actuator method, and a hydraulic actuator which controls how to realize the priority of the lifting speed of the boom relative to the turning speed in the composite action of the excavator. Executive body of the excavator. Background technique [0002] At present, the earth-rock excavating equipment used for excavating sand and gravel, building dams, cleaning rivers and other engineering construction operations are mainly various types of excavators. Because the excavator has the characteristics of strong digging force and high work efficiency, it can be widely used in the construction sites of most projects, such as mines, construction, transportation, water conservancy, airports, demolition and reconstruction, urban construction and other occasions. [0003] Generally, an excavator is mainly com...
Claims
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IPC IPC(8): E02F3/42
Inventor 朱基准王大为卢东玲
Owner DOOSAN INFRACORE CHINA