Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SURFACE COMPACTOR
Document Type and Number:
WIPO Patent Application WO/2018/032496
Kind Code:
A1
Abstract:
A surface compactor (1) including at least one drum (2) for pressing a surface by rolling on the ground comprises: a first variable displacement hydraulic pump (11), a fixed displacement hydraulic pump (15) and a propelling motor (12) hydraulically connected to the first variable displacement hydraulic pump in a closed loop hydraulic circuit, the first variable displacement hydraulic pump and the fixed displacement hydraulic pump being connected to an engine (10); a drum motor (30) hydraulically connected to a second variable displacement hydraulic pump (31) and configured to drive the drum; and a towing control valve (40) disposed in the axle brake fluid line (26), and including a reciprocating pump (41) configured to provide a pressurized fluid from a hydraulic tank (T) to both the axle brake cylinder (25) and drum brake cylinder (34) in case where the engine stops, so that the compactor is movably operated for towing.

Inventors:
LIU, Alan (No.1103, Gang Xi Road High Technology Zon, Jinan Shandong 2, 250102, CN)
WANG, Yeager (No.1103, Gang Xi Road High Technology Zon, Jinan Shandong 2, 250102, CN)
DIAO, Jeff (No.1103, Gang Xi Road High Technology Zon, Jinan Shandong 2, 250102, CN)
Application Number:
CN2016/095980
Publication Date:
February 22, 2018
Filing Date:
August 19, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
VOLVO CONSTRUCTION EQUIPMENT AB (S- Eskilstuna, Eskilstuna, SE)
LIU, Alan (No.1103, Gang Xi Road High Technology Zon, Jinan Shandong 2, 250102, CN)
International Classes:
E01C19/23; B60K17/356
Foreign References:
CN205478612U2016-08-17
CN102066148A2011-05-18
CN2425127Y2001-03-28
CN103821068A2014-05-28
CN200961232Y2007-10-17
US5336019A1994-08-09
Attorney, Agent or Firm:
MING & SURE INTELLECTUAL PROPERTY LAW FIRM (Building 3, Yard No.1 Gaolizhang Road, Wenquan Tow, Haidian District Beijing 5, 100095, CN)
Download PDF: