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A stable energy recovery system and an excavator with the system

An energy recovery and stabilization technology, applied in earth movers/shovels, fluid pressure actuation system components, mechanical equipment, etc., can solve problems such as hydraulic system instability, system work efficiency reduction, hydraulic oil waste, etc., to achieve Improved stability and stable operation

Active Publication Date: 2020-05-29
济宁麟鼎信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The excavator has a slewing platform, which includes the rotation and braking of the slewing platform in each excavation cycle, which will cause a lot of waste of hydraulic oil in the braking of the slewing platform. Energy system, but because all of them are directly entered into the accumulator or into the power plant, there are situations where the hydraulic system is unstable, which will cause waste of oil and reduce the working efficiency of the system

Method used

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  • A stable energy recovery system and an excavator with the system

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Embodiment 1

[0045]Embodiment 1, when the hydraulic motor 9 rotates and brakes, the controller controls the two-position three-way reversing valve-7 reversing, the two-position two-way solenoid valve one-18 conduction and the two-position three-way reversing valve three-20 reversing , the high-pressure oil is delivered to the a1 port of the cartridge valve 19 through the two-position three-way reversing valve one 7 and the two-position two-way solenoid valve one 18. Since the pressure of the oil port controlled by the cartridge valve 19 is lower than the pressure at the a1 port, a1 port and b1 port are connected, high-pressure oil flows into the energy recovery module on the right side through the two-position two-way solenoid valve three 22, and first stores high-pressure oil in the accumulator 33, when the pressure sensor three 31 detects that the accumulator 33 When the pressure at the front end is higher than the set value, at this time, due to the relatively low energy storage efficien...

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Abstract

The invention discloses a stable energy recycle system and an excavator with the system. The system comprises an oil tank, a main variable pump, a motor, a main reversing valve, a first two-position three-way reversing valve, a second two-position three-way reversing valve and a hydraulic motor. The motor drives the main variable pump, a single-way valve 4 is arranged between the main variable pump and the main reversing valve, the system is further provided with an energy recycle device, and the stability of the overall operation of the system can be improved by using a cartridge valve in anoil line.

Description

technical field [0001] The invention belongs to the field of excavators, and in particular relates to a stable energy recovery system. Background technique [0002] The excavator has a slewing platform, which includes the rotation and braking of the slewing platform in each excavation cycle, which will cause a lot of waste of hydraulic oil in the braking of the slewing platform. Energy system, but because all of them are directly entered into the accumulator or into the power plant, there is an unstable situation in the hydraulic system, which will cause waste of oil and reduce the working efficiency of the system. Contents of the invention [0003] In order to solve the above problems, the present invention provides an excavator with a stable energy recovery system and the system. [0004] The present invention specifically adopts the following technical solutions to realize, [0005] A stable energy recovery hydraulic system, the system includes a fuel tank 1, a main v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B1/02F15B21/14E02F9/22
CPCE02F9/2217F15B1/02F15B21/14
Inventor 方碧水
Owner 济宁麟鼎信息科技有限公司