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Rotating energy recycling system for excavator

A technology of rotary energy and recovery system, which is applied in the direction of earth mover/shovel, construction, etc., can solve the problems of motor air suction, high impact of rotary acceleration and deceleration, affecting the recovery of rotary energy, etc., so as to prevent air suction damage, The effect of reducing shock and realizing normal recycling

Active Publication Date: 2016-12-14
XCMG EXCAVATOR MACHINERY
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  • 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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  • Rotating energy recycling system for 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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PUM

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Abstract

The invention discloses a rotating energy recycling system for an excavator. The rotating energy recycling system mainly consists of a recycling loop and an oil supplementing loop, and comprises a hydraulic pump, a first energy accumulator, a second energy accumulator, a recycling valve group for recycling energy, a rotating motor assembly, a first overflow valve, a second overflow valve and a main control valve, wherein the recycling valve group, the second energy accumulator and the second overflow valve form the recycling loop of the system; and the hydraulic pump, the overflow valve, a first check valve, a second check valve and the first energy accumulator form the oil supplementing loop of the system. The rotating energy recycling system for the excavator can realize recycling of the rotating energy, and can further cut down the impact caused by rotating acceleration and deceleration, avoid the phenomenon of air suction of a motor and guarantee normal recycling of the rotating 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 Applications(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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