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A rotary energy recovery system for an excavator

A rotary energy recovery system technology, which is applied in earth movers/excavators, construction, etc., can solve problems affecting rotary energy recovery, motor suction, and high impact of rotary acceleration and deceleration, so as to achieve normal recovery and prevent Vacuum damage, impact reduction effect

Active Publication Date: 2018-07-24
XCMG EXCAVATOR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the recovery of slewing energy mainly includes two parts of energy, slewing braking and slewing start overflow. Although the conventional hydraulic sequence valve can realize the recovery of slewing energy, it has the problems of large impact of slewing acceleration and deceleration and motor suction, which affects the slewing energy. recycling

Method used

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  • A rotary energy recovery system for an excavator

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with accompanying drawing.

[0015] like figure 1 As shown, an excavator rotary energy recovery system is mainly composed of a recovery circuit and an oil supply circuit, including a hydraulic pump 2, a first accumulator 6, a second accumulator 7, and a recovery valve group 9 for energy recovery , the rotary motor assembly 10, the first relief valve 3, the second relief valve 11 and the main control valve 12, the oil inlet of the hydraulic pump 2 is connected to the oil tank 1, and the oil outlet is connected to the inlet of the first one-way valve 4 The oil port is connected, and the bypass is connected to the relief valve 3; the oil outlet of the first check valve 4 is connected to the first accumulator 6; the oil outlet of the first accumulator 6 is connected to the second check valve 5 The oil inlet is connected; the oil outlet of the second check valve 5 is connected with the oil port C of the ro...

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Abstract

The invention discloses an excavator rotary energy recovery system, which is mainly composed of a recovery circuit and an oil supply circuit, including a hydraulic pump, a first accumulator, a second accumulator, a recovery valve group for energy recovery, and a rotary motor assembly. Formation, the first relief valve, the second relief valve and the main control valve, the recovery valve group, the second accumulator and the second relief valve constitute the recovery circuit of the system; the hydraulic pump, the relief valve, the first one-way The valve, the second one-way valve and the first accumulator constitute the oil supply circuit of the system. The invention not only realizes the recovery of the rotary energy, but also reduces the impact of the acceleration and deceleration of the rotary, avoids the phenomenon of the motor sucking air, and ensures the normal recovery of the rotary energy.

Description

technical field [0001] The invention relates to an excavator slewing energy recovery system, which is suitable for recovering slewing braking energy and slewing start overflow energy of a hydraulic hybrid excavator, and belongs to the technical field of excavator energy recovery. Background technique [0002] With the rapid development of social economy, the problems of energy shortage and environmental pollution are becoming more and more serious, and all countries have put the reduction of energy consumption and environmental protection on the agenda. At the same time, the energy efficiency ratio is one of the key parameters of hydraulic excavator market competition, so the research and application of energy-saving technology for hydraulic excavators is particularly necessary. [0003] At present, the research on hydraulic hybrid technology has been included in the national 13th Five-Year Science and Technology Support Plan. The research and application of hydraulic hybrid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F9/22
CPCE02F9/22E02F9/2217
Inventor 费树辉王振兴金月峰王钦刘邓
Owner XCMG EXCAVATOR MACHINERY
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