Electro-hydraulic system for energy recovery and release of slewing brake of construction machinery

A technology for construction machinery and energy recovery, which is applied to fluid pressure actuation system components, mechanical equipment, fluid pressure actuation devices, etc. The control of the signal is convenient, the efficiency is improved, and the energy saving effect is remarkable.

Active Publication Date: 2015-10-28
ZHEJIANG DETAI ELECTROMECHANICAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Converting into electrical energy requires supercapacitors or batteries. Due to the low power density and high cost of supercapacitors and batteries, the effect is not good under frequent rotation conditions.

Method used

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  • Electro-hydraulic system for energy recovery and release of slewing brake of construction machinery
  • Electro-hydraulic system for energy recovery and release of slewing brake of construction machinery

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Embodiment Construction

[0022] In the present invention, engineering machinery refers to excavating machinery, earth shoveling machinery, full-rotation pile pulling machinery and other construction machinery used in engineering construction with frequent rotary motions.

[0023] figure 1 A working principle diagram of an electro-hydraulic system with a structure of the present invention is shown. like figure 1 As shown, the electro-hydraulic system of the present invention mainly includes an energy recovery and release mechanism and a control unit, wherein the control unit includes a controller 6 and a first pressure sensor 7, and the energy recovery and release mechanism includes a hydraulic energy storage unit 2, a first electromagnetic transducer Directional valve 3, hydraulic motor 1, sequence valve 4, first one-way valve 12 and second one-way valve 13. The hydraulic motor 1 is coaxially connected with the main variable pump 16 of the construction machinery, the A port of the hydraulic motor 1 ...

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Abstract

The invention discloses an electro-hydraulic energy recovery and release system for slewing brake of engineering machinery. The electro-hydraulic energy recovery and release system comprises an energy recovery and release mechanism and a control unit. The control unit comprises a controller and a first pressure sensor. The energy recovery and release mechanism comprises a hydraulic energy storage unit, an electromagnetic reserving valve, a hydraulic motor, a sequence valve, a first check valve and a second check valve. Kinetic energy generated during slewing brake of the engineering machinery can be stored by the hydraulic energy storage unit, the controller controls the electromagnetic reversing valve to release the energy stored in the hydraulic energy storage unit according to the load of a main variable pump so as to drive the hydraulic motor to provide a torque to the main variable pump, and thus fuel oil consumption of an engine is reduced and work efficiency of the engineering machinery is improved.

Description

technical field [0001] The invention relates to a system for energy recovery of engineering machinery, in particular to an electro-hydraulic system for energy recovery and release of slewing braking of engineering machinery. Background technique [0002] With the development of science and technology, the consumption of energy and the deterioration of the environment have become global problems. At present, all countries in the world put energy conservation and emission reduction work in a very important position. Construction machinery consumes a lot of energy, emits a lot of pollution, and uses a large amount, which has a great impact on energy waste and environmental pollution. Therefore, it is of great significance to study the energy saving of construction machinery. Many construction machinery have frequent slewing conditions, and during the slewing process, due to the large load inertia, a large amount of energy will be released during the braking process. In most...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B21/14F15B21/08F15B1/02
Inventor 魏然朱高松赖振宇王贵成
Owner ZHEJIANG DETAI ELECTROMECHANICAL ENG
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