Title:
BRAKE CONTROL DEVICE OF WHEEL TYPE CONSTRUCTION MACHINE
Document Type and Number:
WIPO Patent Application WO/2012/091193
Kind Code:
A1
Abstract:
Disclosed is a brake device for braking front and rear axles by working oil supplied to front and rear brake cylinders from a hydraulic pump according to the control of a brake pedal. The brake control device of a wheel type construction machine according to the present invention includes: a brake hydraulic pump and a brake pedal; a brake valve, of which a spool is converted according to the control of the brake pedal; a brake device having front and rear brake cylinders, which are driven by working oil supplied at the time of controlling the brake pedal and have different volumes, and front and rear discs to be engaged according to the operation of the front and rear brake cylinders; front and rear axles which are braked by the brake device; and a flow rate control valve mounted on a path between the brake pedal and either the front or rear brake cylinder, whichever has a relatively smaller volume, and distributing and supplying a flow rate to the front and rear brake cylinders according to the control angle of the brake pedal so as to synchronize the front and rear axles at a braking force generating time point.
Inventors:
CHOI JIN-YOUN (KR)
SON YOUNG-JIN (KR)
SON YOUNG-JIN (KR)
Application Number:
PCT/KR2010/009406
Publication Date:
July 05, 2012
Filing Date:
December 28, 2010
Export Citation:
Assignee:
VOLVO CONSTR EQUIP AB (SE)
CHOI JIN-YOUN (KR)
SON YOUNG-JIN (KR)
CHOI JIN-YOUN (KR)
SON YOUNG-JIN (KR)
International Classes:
B60T11/28; B60T8/26; B60T17/04
Domestic Patent References:
| WO2001030625A1 | 2001-05-03 | |||
| WO1997021574A1 | 1997-06-19 |
Foreign References:
| JP2002106711A | 2002-04-10 | |||
| US20020175561A1 | 2002-11-28 | |||
| KR20030085362A | 2003-11-05 |
Other References:
See also references of EP 2660113A4
Attorney, Agent or Firm:
YOON, Eui-Seoup (KR)
윤의섭 (KR)
윤의섭 (KR)
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Claims: