Energy recovery system for load sensing hydraulic system

An energy recovery, hydraulic system technology, applied in the direction of fluid pressure actuating system components, fluid pressure actuating devices, mechanical equipment, etc., can solve the problems of increased system energy consumption and reduced energy recovery effect, achieve efficient recovery, avoid pressure The effect of fluctuation, good control effect

Inactive Publication Date: 2013-08-21
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, due to the application of the energy recovery system, the energy consumption of the system is greatly increased. Although a part of the energy can be recovered, the effect of energy recovery has been greatly reduced.

Method used

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  • Energy recovery system for load sensing hydraulic system
  • Energy recovery system for load sensing hydraulic system
  • Energy recovery system for load sensing hydraulic system

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and examples, and the described embodiments are only some of the embodiments of the present invention, not all of them. It should be understood that the examples are only used to illustrate and explain the present invention, not to limit the present invention.

[0029] Such as figure 2 As shown, an energy recovery system for a load-sensing hydraulic system consists of a signal detection unit, a control unit, an energy recovery unit and an energy storage unit;

[0030] The signal detection unit is composed of pressure sensors. Its function is to detect the system pressure of the oil inlet side of the actuator of the hydraulic system when the load drops, and convert it into a digital signal and transmit it to the CAN bus of the whole machine, and further transmit the signal to the control panel through the CAN bus. unit;

[0031] The control unit is composed of the contro...

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PUM

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Abstract

The invention discloses an energy recovery system for a load sensing hydraulic system, and belongs to the technical field of engineering machinery. The energy recovery system comprises a signal detecting unit, a control unit, an energy recovery unit and an energy storage unit. The signal detecting unit is used for detecting the pressure on the oil inlet side of a hydraulic system execute mechanism when load decreases and converting the pressure into digital signals to transmit to the control unit. The control unit is used for receiving detecting signals, processing the detecting signals by corresponding control algorithm to generate control signals and transmitting to the energy recovery unit. The energy recovery unit is used for converting hydraulic energy into power and adjusting working states according to a control signal in real time. The energy storage unit is used for storing or releasing power according to the system operating states. The energy recovery system aims to a feature of the loading sensing technology, and allows adjustment of variable hydraulic motor output volume in the energy recovery unit to be automatically coordinated with actions of a multi-way valve in the load sensing system, and application of the power-type energy recovery technology in the load sensing hydraulic system is realized.

Description

technical field [0001] The invention belongs to the technical field of engineering machinery and relates to an energy recovery system used in a load sensitive hydraulic system. Background technique [0002] When the construction machinery is working, the working devices frequently reciprocate, such as the braking and lifting of the arm of the hydraulic excavator, and the lifting and lowering of heavy objects by the hydraulic crane. A large amount of potential energy is generated during braking or load drop, most of which is converted into heat by the throttling effect of the hydraulic valve, which not only wastes energy but also causes heating of the system. When the heat dissipation of the system is not good, the reliability and life of the hydraulic components will be reduced, and even cause safety accidents. If this part of potential energy can be recovered, it can not only save energy, but also reduce the heating and wear of the system, and improve the service life of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B21/14
Inventor 赵静一李博郭锐
Owner YANSHAN UNIV
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