Hydraulic driving device and system

A driving device and hydraulic technology, which is applied in the direction of fluid pressure actuators, servo motors, mechanical equipment, etc., can solve the problems of slow response of hydraulic actuators and difficulty in meeting expected requirements, so as to increase the compression volume and increase the pressure Accuracy, energy saving effect

Inactive Publication Date: 2014-05-21
BOSCH REXROTH (CHANGZHOU) CO LTD
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

[0005] However, in the existing hydraulic system, as long as the pressure of the hydraulic system is greater than the accumulator, the hydraulic oil will enter the accumulator, even when it is necessary to drive a hydraulic actuator (such as a hydraulic cylinder or a hydraulic motor), the hydraulic oil will It will still be injected into the accumulator, so part of the hydraulic oil originally needed for the hydraulic actuator may be stored in the accumulator, causing the hydraulic actuator to respond slowly and it is difficult to meet the expected requirements

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Embodiment Construction

[0026] In order to help those skilled in the art to accurately understand the claimed subject matter of the present invention, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] figure 1 A schematic diagram showing a hydraulic drive device according to a specific embodiment of the present invention, such as figure 1 As shown, a hydraulic drive device 100 according to a specific embodiment of the present invention includes a hydraulic pump 1 , an accumulator 3 and a control unit 5 . Among them, the hydraulic pump 1 pumps hydraulic fluid from the accumulator 7 into the hydraulic output line 2 for connecting to the hydraulic actuator that needs to be driven. The accumulator 3 is connected to the hydraulic output circuit 2 through an energy storage circuit 30, and a flow control device 32 is arranged in the energy storage circuit 30, and the flow control device 32 may be a system, ...

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Abstract

The invention discloses a hydraulic driving device and system. The hydraulic driving device comprises a hydraulic pump, an energy accumulator and a control unit; wherein the hydraulic pump pumps hydraulic fluid into a hydraulic output line from a liquid storing device; the energy accumulator is connected to the hydraulic output line by an energy accumulation line; a flow control device is arranged in the energy accumulation line; the control unit adjusts the flow of the hydraulic fluid passing by the energy accumulation line by controlling the flow control device according to operation conditions. In the hydraulic driving system, the hydraulic output line is connected to one or more hydraulic actuators. Therefore, the flow and pressure of hydraulic fluid passing by the energy accumulation line can be adjusted by the hydraulic driving device and system according to the operation conditions in real time, the work efficiency is improved, energy consumption is reduced, and the pressure precision is improved.

Description

technical field [0001] The invention relates to the technical field of hydraulic drive, in particular to a hydraulic drive device and system. Background technique [0002] In order to achieve predetermined actions in mechanical equipment, hydraulic drive devices are often used. For example, on an injection molding machine, after closing the mold, it is necessary to inject heated and molten plastic into the cavity of the mold. Then, it is necessary to keep the pressure to maintain the position of the hydraulic actuator for injection for a period of time, wait for the injected part to cool and form in the cavity, then open the mold to take out the part, and then close the mold for the next injection. Therefore, in the injection molding machine, actions such as injection, mold clamping, and mold opening need to be realized, and these actions can be realized by using a hydraulic drive device. However, each action has different requirements for the required hydraulic flow and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/02
Inventor 王伟陈永伯杨大鹏刘洋孙培
Owner BOSCH REXROTH (CHANGZHOU) CO LTD
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