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Device for controlling regenerated flow rate for construction machine and method for controlling same

A technology for controlling engineering and flow, which is applied to fluid pressure actuation devices, flow control using electrical devices, flow control, etc. It can solve the problem that electronic proportional valves cannot actively respond to various operations, so as to improve operability and response. performance, improved workability, and improved energy efficiency

Inactive Publication Date: 2016-09-14
VOLVO CONSTR EQUIP AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the calculated opening area value of the electronic proportional valve corresponding to the arm retracting operation cannot actively cope with various operations such as combined operations of the actuators or changes in the rotational speed of the engine, which is problematic

Method used

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  • Device for controlling regenerated flow rate for construction machine and method for controlling same
  • Device for controlling regenerated flow rate for construction machine and method for controlling same
  • Device for controlling regenerated flow rate for construction machine and method for controlling same

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Embodiment Construction

[0078] Hereinafter, an apparatus for controlling regeneration flow rate in a construction machine and a control method thereof according to exemplary embodiments will be described in detail with reference to the accompanying drawings.

[0079] image 3 is a hydraulic circuit diagram of an apparatus for controlling regeneration flow in construction machinery according to an exemplary embodiment, Figure 4 is a hydraulic circuit diagram of an apparatus for controlling regeneration flow in construction machinery according to another example embodiment, Image 6 is a flowchart of a control method of an apparatus for controlling regeneration flow in a construction machine according to an exemplary embodiment, Figure 7 is a flowchart showing a process of selecting a preset opening area of ​​an electronic proportional valve by manipulating a control lever in a control method of an apparatus for controlling a regenerative flow rate in a construction machine according to an exemplary...

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PUM

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Abstract

Disclosed are a device for controlling a regenerated flow rate for a construction machine and a method for controlling the same, the device being able to supply a large chamber of an arm cylinder with a part of operating oil, which is discharged from the arm cylinder to an operating oil tank during arm-in driving, and regenerating the same. The present invention provides a device for controlling a regenerated flow rate for a construction machine, the device being characterized by comprising: a variable capacity-type hydraulic pump and a pilot pump; an arm cylinder driven by operating oil supplied from the hydraulic pump; a variable arm regeneration valve installed in a passage between the arm cylinder and the operating oil tank; and an electronic proportional valve installed in a passage between the pilot pump and the arm regeneration valve.

Description

technical field [0001] The present disclosure generally relates to a device for controlling regeneration flow in construction machinery and a control method thereof. More particularly, the present disclosure relates to an apparatus for controlling a regenerative flow rate in a construction machine by supplying a part of working fluid to a larger volume of an arm cylinder during an arm retracting operation, and a control method thereof. chamber to regenerate the part of the working fluid discharged from the arm cylinder to the working fluid tank. Background technique [0002] figure 1 A typical excavator shown includes a lower drive body 1 , an upper frame 2 , a cab 3 , an engine compartment and an actuator 10 . [0003] The upper frame 2 is rotatably arranged on the lower driving body 1 . [0004] The cab 3 and the engine room are arranged on the upper frame 2 . [0005] The actuator 10 includes a boom 4 driven by a boom cylinder 7 , an arm 5 driven by an arm cylinder 8 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D7/06F15B11/00E02F9/20
CPCG05D7/0635E02F9/2203E02F9/2285E02F9/2296F15B2011/0246F15B2211/20546F15B2211/3051F15B2211/3058F15B2211/40515F15B2211/41581F15B2211/428F15B2211/6313F15B2211/6355E02F9/2217E02F9/2228F15B11/024E02F3/437E02F9/2232F15B13/021
Inventor 丁太郎李春汉
Owner VOLVO CONSTR EQUIP AB