Title:
SAFETY DEVICE FOR PREVENTING WORKING-APPARATUS OPERATION DURING REGENERATION OF FORKLIFT-TRUCK DIESEL-EXHAUST-GAS AFTER-TREATMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/058201
Kind Code:
A1
Abstract:
The present invention relates to a safety device for preventing working-apparatus operation during the regeneration of a forklift-truck diesel-exhaust-gas after-treatment device. According to the present invention, the safety device for preventing working-apparatus operation during the regeneration of a forklift-truck diesel-exhaust-gas after-treatment device comprises: a hydraulic pump (30) which discharges high-pressure hydraulic fluid; a main control valve (50) which is provided with a plurality of working-apparatus control valves and provides the hydraulic fluid to a desired working apparatus (80) among a plurality of working apparatuses (80); an adjustment control valve (60) which is controlled in such a way as to provide pilot hydraulic fluid to the plurality of working-apparatus control valves due to the actuation of a working-apparatus actuation lever (61); a pressure-reducing valve (70) which effects control in such a way that the high-pressure hydraulic oil discharged from the hydraulic pump (30) is reduced in pressure to the pressure of the pilot hydraulic fluid, and which supplies the pressure-reduced hydraulic fluid to the adjustment control valve (60); and a control-valve unit (100) which is disposed upstream of the adjustment control valve (60), and is controlled in such a way as to cut off the supply of the pressure-reduced hydraulic fluid to the adjustment control valve (60) upon receiving a signal from the control unit (20), based on worker departure data when a worker leaves the driving seat during the regeneration of a DPF (diesel exhaust-gas after-treatment device).
Inventors:
WON KI WON (KR)
Application Number:
PCT/KR2013/008968
Publication Date:
April 17, 2014
Filing Date:
October 08, 2013
Export Citation:
Assignee:
DOOSAN CORP (KR)
International Classes:
F01N3/023; F01N9/00
Foreign References:
| JP2011037560A | 2011-02-24 | |||
| JP2010270699A | 2010-12-02 | |||
| KR20120059696A | 2012-06-11 | |||
| JP2011106286A | 2011-06-02 | |||
| KR20080006950A | 2008-01-17 |
Other References:
See also references of EP 2918802A4
None
None
Attorney, Agent or Firm:
HANBEOT PATENT & LAW FIRM (KR)
특허법인 한벗 (KR)
특허법인 한벗 (KR)
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