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1. (WO2011157094) VEHICLE BODY INCLINATION-ANGLE REGULATING UINT, HYDROPNEUMATIC SUSPENSION MECHANISM AND MOBILE CRANE

Pub. No.:    WO/2011/157094    International Application No.:    PCT/CN2011/074259
Publication Date: Dec 22, 2011 International Filing Date: May 18, 2011
IPC: B60G 17/0165
B60G 13/08
B60G 17/04
B66C 23/36
Applicants: CHANGSHA ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY DEVELOPMENT CO., LTD.
长沙中联重工科技发展股份有限公司
HUNAN ZOOMLION SPECIAL VEHICLE CO., LTD.
湖南中联重科专用车有限责任公司
ZHAN, Chunxin
詹纯新
LIU, Quan
刘权
LI, Yi
李义
LI, Yingzhi
李英智
WANG, Qitao
王启涛
Inventors: ZHAN, Chunxin
詹纯新
LIU, Quan
刘权
LI, Yi
李义
LI, Yingzhi
李英智
WANG, Qitao
王启涛
Title: VEHICLE BODY INCLINATION-ANGLE REGULATING UINT, HYDROPNEUMATIC SUSPENSION MECHANISM AND MOBILE CRANE
Abstract:
A vehicle body inclination-angle regulating unit (17) includes a balancing oil cylinder (10). One chamber of the balancing oil cylinder (10) is connected with an oil tank (5) and an oil source for leveling operation through a first check damping valve (8) and an electric controlled switch valve (7), and the other is connected with a rodless chamber of a suspension oil cylinder through an electric controlled lock valve (14) and a second check damping valve (9). An automatically- leveling hydropneumatic suspension mechanism and a mobile crane having the same are also disclosed. The automatically-leveling hydropneumatic suspension mechanism includes at least two pairs of suspension oil cylinders (12), vehicle body inclination-angle regulating units (17), a vehicle body transverse inclination-angle sensor (1) and a control unit (3). Each suspension oil cylinder (12) is correspondingly provided with the vehicle body inclination-angle regulating unit (17) including the balancing oil cylinder (10). The present invention realizes effectively dynamic leveling function of different road conditions, especially transverse slopes, of the mobile crane. The mobile crane is provided with simple operation that are all automatically performed by the control unit, which improves driving safety remarkably and prevents an accident of vehicle-overturning.