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Closed hydraulic system with counterbalance valve

A technology of hydraulic system and balancing valve, applied in the direction of fluid pressure actuating device, servo motor, mechanical equipment, etc., can solve the problems of affecting the operation of the system and increasing the heat generation of the system, so as to achieve a small impact, a small amount of heat, and a small amount of heat. Effect

Active Publication Date: 2019-03-26
WUXI DELIN DEFENSE EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, directly adding the balance valve will increase the heat generation of the system and affect the normal operation of the system

Method used

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  • Closed hydraulic system with counterbalance valve

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Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0013] Such as figure 1 As shown, the closed hydraulic system with balance valve of the present invention includes a closed pump 1 , a motor 4 and a back pressure valve 3 . The closed pump 1 has a first port A1 and a second port B1, and the motor 4 has a third port A4 and a fourth port B4. The closed pump 1 is connected with a first oil tank 11 , and the first port A1 of the closed pump 1 is connected with the third port A4 of the motor 4 through a pipeline. The back pressure valve 3 has an inlet A3, an outlet B3 and a control port C. The inlet A3 of the back pressure valve 3 is connected to the fourth interface B4 of the motor 4 through a pipeline, and the outlet B3 of the back pressure valve 3 is connected to the closed pump 1 through a pipeline. There is a check valve 2 between the inlet A3 and the outlet B3 of the back pressure valve 3. The flow directi...

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Abstract

The invention relates to a closed hydraulic system, in particular to a closed hydraulic system with a balance valve and special for scientific investigation type winches and other wind type winches. The system comprises a closed pump and a motor. The closed pump is provided with a first joint and a second joint; and the motor is provided with a third joint and a fourth joint. The closed pump is connected with a first oil tank; and the first joint of the closed pump is connected with the third joint of the motor through a pipe. The system is characterized by further comprising a back pressure valve; the back pressure valve is provided with an inlet, an outlet and a control port; the inlet of the back pressure valve is connected with the fourth joint of the motor through a pipe; an outlet of the back pressure valve is connected with the second joint of the closed pump through a pipe; a one-way valve is arranged between the inlet and the outlet of the back pressure valve; the flowing direction of the one-way valve is from the outlet of the back pressure valve to the inlet; and the control port of the back pressure valve is connected with a control oil way through a pipe. The hydraulic system can keep the load, is low in heating quantity, and can guarantee normal operation.

Description

technical field [0001] The invention relates to a closed hydraulic system, specifically a closed hydraulic system with a balance valve, which is especially suitable for scientific research winches and other hoisting winches. Background technique [0002] The closed hydraulic system has the advantages of compact structure, stable transmission, high transmission efficiency, no throttling and overflow loss, fast system response, etc., so the traction winch is generally driven by a closed hydraulic system. [0003] At present, the closed hydraulic system of the traction winch includes a closed pump and a motor. The closed pump has a first port and a second port, and the motor has a third port and a fourth port. The closed pump is connected with a first oil tank, the first port of the closed pump is connected with the third port of the motor through a pipeline, and the second port of the closed pump is connected with the fourth port of the motor through a pipe. Due to the chara...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/08
CPCF15B11/08
Inventor 朱小东吴朋朋钱伟杰周大明
Owner WUXI DELIN DEFENSE EQUIP CO LTD
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