Electric static liquid acting system under gravity load

An electro-hydrostatic and actuating system technology, applied in the mechanical field, can solve the problems of difficulty in energy recovery, low energy efficiency, energy waste, etc., and achieve the effects of accurate control, improved energy efficiency, and avoidance of throttling losses.

Inactive Publication Date: 2017-09-05
BEIJING JIAOTONG UNIV
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  • Abstract
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Problems solved by technology

[0002] In the case of jacking and load simulation, the electric hydrostatic actuator often needs to overcome the gravity movement, the system heats up seriously, and the energy efficiency is low
The reactive power caused by the gravity load accounts for a large part of the total power of the system, but this part of energy is difficult to recover, and is generally processed by the braking system, resulting in a huge waste of energy

Method used

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  • Electric static liquid acting system under gravity load
  • Electric static liquid acting system under gravity load
  • Electric static liquid acting system under gravity load

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Embodiment Construction

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0025] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understoo...

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Abstract

The invention provides an electric static liquid acting system under a gravity load. The electric static liquid acting system comprises a servo motor connected to a two-way variable duplex pump; two oil inlets of the two-way variable duplex pump are connected with a first energy accumulator and a second energy accumulator correspondingly; the second energy accumulator is connected with a first pressure gauge, and is connected to a rod cavity of an asymmetric hydraulic cylinder; two oil outlets of the two-way variable duplex pump communicate with each other, and are connected with a second pressure gauge; the second pressure gauge is also connected with a rodless cavity of the asymmetric hydraulic cylinder; the upper end of the asymmetric hydraulic cylinder is connected with the gravity load; a linear motor is connected with a proportional adjusting device; and the proportional adjusting device is connected with the two-way variable duplex pump. The problem of asymmetric flows of two cavities of the asymmetric hydraulic cylinder in the electric static liquid system is solved; the linear motor and the proportional adjusting device are used for precisely and quickly adjusting the variable structure of the two-way variable duplex pump; and the electric static liquid acting system is simple in structure, meanwhile, prevents the throttling loss caused by introduction of a control valve into an electro-hydraulic servo variable adjusting mechanism, and further improves the energy efficiency.

Description

technical field [0001] The invention relates to the field of mechanical technology, in particular to an electrohydrostatic actuation system under gravity load. Background technique [0002] In the case of jacking and load simulation, the electric hydrostatic actuator often needs to overcome the gravity movement, the system heats up seriously, and the energy efficiency is low. The reactive power caused by the gravity load accounts for a large part of the total power of the system, but this part of energy is difficult to recover and is generally processed by the braking system, resulting in a huge waste of energy. Contents of the invention [0003] Embodiments of the present invention provide an electrohydrostatic actuation system under gravity load, so as to achieve the energy-saving effect of the electrohydrostatic actuation system. [0004] In order to achieve the above object, the present invention adopts the following technical solutions. [0005] An electric hydrosta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B1/02
CPCF15B1/02
Inventor 董立静冯利军谭启凡延皓竺超今宗起
Owner BEIJING JIAOTONG UNIV
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