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Title:
VARIABLE HYDRAULIC MOTOR FOR CONSTRUCTION MACHINERY
Document Type and Number:
WIPO Patent Application WO/2018/034359
Kind Code:
A1
Abstract:
The present invention relates to a variable hydraulic motor for construction machinery and, more specifically, to a variable hydraulic motor, provided with a tilted device, for construction machinery, which allows easy processing, has reduced abrasion and enhanced durability, and shows a minimum speed deviation. To this end, the present invention provides a variable hydraulic motor for construction machinery, comprising: a casing; a rotational shaft rotatably installed in the casing; a cylinder block fixedly installed to the rotational shaft; a plurality of cylinders installed to the cylinder block along the circumferential direction of the rotational shaft; first pistons respectively slid into the plurality of cylinders; and a tilted device the front surface of which makes contact with the first pistons in a sliding manner, and the inclination of which is changed about a pivot coming in contact with the rear surface thereof, wherein the rear surface of the tilted device comprises a first inclination surface and a second inclination surface having mutually different inclination angles, wherein the rear surface of the tilted device further comprises a third inclination surface formed between the first inclination surface and the second inclination surface, and wherein the inclination of the tilted device is changed about the pivot coming in contact with an inclination change support point configured on the third inclination surface.

Inventors:
JOO, Young Mo (105-904, 115 Dongsan-ro, Seongsan-gu,Changwon-si, Gyeongsangnam-do, 51498, KR)
Application Number:
KR2016/009031
Publication Date:
February 22, 2018
Filing Date:
August 17, 2016
Export Citation:
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Assignee:
VOLVO CONSTRUCTION EQUIPMENT AB (S Eskilstuna, SE-631 85, SE)
JOO, Young Mo (105-904, 115 Dongsan-ro, Seongsan-gu,Changwon-si, Gyeongsangnam-do, 51498, KR)
International Classes:
E02F9/22
Foreign References:
KR20000015155A2000-03-15
KR0135479B11998-04-28
KR20100049143A2010-05-12
KR20150097568A2015-08-26
JP2016056736A2016-04-21
Attorney, Agent or Firm:
KIM, Seon-Min (Akros Patent & Trademark Attorneys, 8F. DongGu Bldg.,15, Teheran-ro 86-gil,,Gangnam-gu, Seoul, 06179, KR)
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