Hydraulic closed circuit applying to double-hydraulic pump combined and separated drive
A closed-loop, hydraulic pump technology, applied in fluid pressure actuation devices, servo motor components, mechanical equipment, etc., can solve the problem of not being able to switch freely, and achieve the effect of meeting the requirements of use and switching flexibly
Inactive Publication Date: 2013-07-24
无锡市钻通工程机械有限公司 +1
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Problems solved by technology
[0002] In the current hydraulic closed circuit, the hydraulic motor 7 is driven by the first hydraulic pump 1 or the hydraulic motor 7 is driven by the first hydraulic pump 2 and the second hydraulic pump 2 simultaneously, such as figure 1 and figure 2 , this kind of hydraulic closed circuit cannot realize the free switching to one of the hydraulic pumps when the two hydraulic pumps are driven at the same time
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[0013] The present invention will be further described below in conjunction with specific examples.
[0014] The hydraulic closed circuit applied to the combination and separate driving of two hydraulic pumps includes the first hydraulic pump 1, the second hydraulic pump 2 and the hydraulic motor 7, and is also equipped with a first hydraulic control check valve 3 and a second hydraulic control check valve. Directional valve 4, the third hydraulic control check valve 5 and the fourth hydraulic control check valve 6, the outlet of the first hydraulic pump 1 is connected to the inlet of the first hydraulic control check valve 3 through pipelines, the first hydraulic pump The inlet of 1 is connected to the inlet of the second hydraulic control check valve 4 through a pipeline, the outlet of the second hydraulic pump 2 is connected to the inlet of the third hydraulic control check valve 5 through a pipeline, and the outlet of the second hydraulic pump 2 The inlet is connected to t...
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The invention relates to a hydraulic closed circuit applying to double-hydraulic pump combined and separated drive. The hydraulic closed circuit comprises a first hydraulic pump, a second hydraulic pump and a hydraulic motor, and further comprises first, second, third and fourth pilot operated check valves, wherein the outlet of the first hydraulic pump is connected with the inlet of the first pilot operated check valve, and the inlet of the first hydraulic pump is connected with the inlet of the second pilot operated check valve; the outlet of the second hydraulic pump is connected with the inlet of the third pilot operated check valve, and the inlet of the second hydraulic pump is connected with the inlet of the fourth pilot operated check valve; the outlets of the first and third pilot operated check valves are connected with each other, and the outlets of the second and fourth pilot operated check valves are connected with each other; and the inlet of the hydraulic motor is connected onto a pipeline between the outlet of the first pilot operated check valve and the outlet of the third pilot operated check valve, and the outlet of the hydraulic motor is connected onto a pipeline between the outlet of the second pilot operated check valve and the outlet of the fourth pilot operated check valve. The circuit can realize the normal work by driving of two oil pumps at the same time or any one of the two oil pumps without any operation, and the two modes are flexible to switch.
Description
technical field [0001] The invention relates to a hydraulic closed circuit, in particular to a hydraulic closed circuit applied to combination and separate driving of two hydraulic pumps. Background technique [0002] In the current hydraulic closed circuit, the hydraulic motor 7 is driven by the first hydraulic pump 1 or the hydraulic motor 7 is driven by the first hydraulic pump 2 and the second hydraulic pump 2 simultaneously, such as figure 1 and figure 2 , this kind of hydraulic closed circuit cannot realize the free switching to one of the hydraulic pumps when the two hydraulic pumps are driven at the same time. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and to provide a hydraulic closing system that can freely switch to one of the hydraulic pumps when the two hydraulic pumps are driven simultaneously. formula circuit. [0004] According to the technical solution provided by the presen...
Claims
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Login to View More IPC IPC(8): F15B13/00F15B13/02
Inventor 唐志平齐长缨贾绍宽
Owner 无锡市钻通工程机械有限公司