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An emergency drive system of a construction machine

A driving system and construction machinery technology, applied in earth movers/excavators, load suspension components, construction, etc., can solve problems such as inability to start construction machinery

Active Publication Date: 2020-09-18
DOOSAN INFRACORE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the case of a construction machine using an electronic hydraulic pump, when an abnormality occurs in the vehicle control unit (Vehicle Control Unit), even if the start switch is operated normally, the construction machine may not be able to start

Method used

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  • An emergency drive system of a construction machine
  • An emergency drive system of a construction machine
  • An emergency drive system of a construction machine

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Embodiment Construction

[0029] The advantages and features of the present invention, and methods for achieving them will become apparent in the course of referring to the embodiments described in detail later with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be realized in various forms different from each other. This embodiment is only to make the disclosure of the present invention more complete, and to the general technology in the field of the present invention It is provided to more fully inform the scope of the invention, and the present invention is defined only by the claims. Therefore, in some embodiments, some well-known process steps, some well-known component structures and some well-known technologies are not specifically described in order to avoid ambiguously explaining the present invention. Throughout the specification, the same reference signs refer to the same constituent elements.

[0030] In ord...

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Abstract

The present invention relates to an emergency drive system of a construction machine capable of emergency start and emergency operation, the emergency drive system comprising: an electronic hydraulicpump for operating a plurality of work machines; a vehicle control device that outputs a control signal to the electronic hydraulic pump on the basis of a plurality of work machine operation signals;an electronic proportional valve for controlling the electronic hydraulic pump; and an emergency operation drive selection input unit that bypasses the vehicle control device and outputs a preset electric signal to the electronic proportional valve.

Description

technical field [0001] The invention relates to a construction machine, in particular to an emergency driving system of the construction machine capable of emergency start and emergency operation. Background technique [0002] Construction machines such as excavators and wheel loaders usually include a hydraulic pump driven by an engine and multiple components such as booms, sticks, buckets, travel motors, and swing motors are driven by the pressure of the working oil discharged from the hydraulic pump. The hydraulic system of the work machine. [0003] However, in the case of a construction machine using an electro-hydraulic pump, when an abnormality occurs in a vehicle control unit (Vehicle Control Unit), the construction machine may not be able to start even if the start switch is normally operated. Contents of the invention [0004] technical problem [0005] An object of the present invention is to provide an emergency drive system for a construction machine capable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C13/22E02F9/20E02F9/22
CPCB66C13/22E02F9/20E02F9/22E02F9/2264E02F9/2267E02F9/2062E02F9/24
Inventor 李秀光
Owner DOOSAN INFRACORE CO LTD