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Hydraulic machinery

A technology of hydraulic machinery and booms, which is applied in mechanical equipment, earth movers/shovels, fluid pressure actuating devices, etc., and can solve problems such as lack of energy recovery efficiency

Active Publication Date: 2021-11-19
VOLVO CONSTR EQUIP AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prior art hydraulic machinery does not have high energy recovery efficiency, so it is necessary to improve the recovery efficiency

Method used

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  • Hydraulic machinery
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Embodiment Construction

[0015] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0016] figure 1 is a schematic diagram showing the appearance of a hydraulic machine according to some embodiments.

[0017] The hydraulic machine may perform work by actuating the work device 300 using hydraulic pressure. In some embodiments, the hydraulic machine may be a construction machine.

[0018] In some embodiments, the hydraulic machine may be such as figure 1 The excavator shown. The hydraulic machine may include an upper structure 100 , a lower structure 200 and a working device 300 .

[0019] The substructure 200 includes a travel actuator that allows the hydro-machine to travel. The travel actuator may be a hydraulic motor.

[0020] The superstructure 100 may include a pump, a working fluid tank, a power source, control valves, and the like. Additionally, the superstructure 100 may include a rotary actuator that allows the su...

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PUM

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Abstract

A hydraulic machinery may comprise: a boom actuator (313) including a large chamber (313a) and a small chamber (313b); a tank (101); and an energy recovery circuit (500) provided between the boom actuator (313) and the tank (101), wherein the energy recovery circuit (500) comprises: a discharge valve (513) provided between the large chamber (313a) and the tank (101) to allow or block the flow of fluid from the former to the latter; a regeneration valve (509) connecting the large chamber (313a) and the small chamber (313b) to allow or block the flow of fluid from the former to the latter; a recovery part (525) for recovering energy; and a first valve (517) provided between the large chamber (313a) and the recovery part (525) to allow or block the flow of fluid from the former to the latter.

Description

technical field [0001] The present disclosure relates to a hydraulic machine, and more particularly, to a hydraulic machine capable of efficiently recovering energy discharged from a boom actuator. Background technique [0002] A hydraulic machine is a device configured to perform work by supplying high-pressure fluid to (an actuator of) a work device. In order to improve the fuel efficiency of hydraulic machines, a technique of recovering energy contained in fluid discharged from a boom actuator has been proposed. However, the prior art hydraulic machines do not have high energy recovery efficiency, and thus the recovery efficiency needs to be improved. Contents of the invention [0003] technical problem [0004] Therefore, the present disclosure has been made in consideration of the above-mentioned problems occurring in the prior art, and aims to improve energy recovery efficiency. [0005] Technical solutions [0006] In order to achieve at least one of the above o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/22
CPCE02F3/435E02F9/2217E02F9/2292E02F9/2285F15B21/14F15B2211/212F15B2211/20507F15B2211/7053F15B2211/761F15B2211/6306F15B2211/6313F15B2211/41581F15B2211/31558E02F9/2221E02F9/2267E02F9/2225
Inventor 丁太郎权相暋裵相基金东洙
Owner VOLVO CONSTR EQUIP AB