Title:
AUTO-LEVELING DRIVE AXLE DEVICE FOR WHEELED TRACTOR, AND LEVELING METHOD
Document Type and Number:
WIPO Patent Application WO/2017/211167
Kind Code:
A1
Abstract:
An auto-leveling drive axle device for a wheel tractor, and leveling method. The device comprises a transmission device and a leveling device. The transmission device comprises a drive axle housing (2), a half-shaft bevel gear (3), a vertical transmission shaft (4), and a wheel-side planetary reduction gear mechanism (9). The vertical transmission shaft (4) has an upper end connected to an upper vertical shaft bevel gear (5) via a spline, and a lower end fixed to a lower vertical shaft bevel gear (11). The half-shaft bevel gear (3) is mounted on the drive axle housing (2) by means of a bearing, and meshes with the upper vertical shaft bevel gear (5). The lower vertical shaft bevel gear (11) meshes with a bevel gear of the wheel-side planetary reduction gear mechanism (9) to drive a wheel (8). The leveling device employs a hydraulic system, and the hydraulic system comprises a hydraulic solenoid-operated directional control valve (10) and a hydraulic cavity in communication therewith and provided below the drive axle housing. By controlling a liquid to flow into or out of the hydraulic cavity, the drive axle housing (2) is driven to move upward or downward with respect to the wheel (8), thus realizing leveling of the drive axle. The device of the present invention changes only a vertical position of a drive axle with respect to a wheel, and a wheel shaft distance and wheel center spacing are not changed, thus improving traveling stability of a vehicle.
Inventors:
HAN JIANGYI (CN)
SHANG GAOGAO (CN)
XIA CHANGGAO (CN)
GAO XIANG (CN)
SHANG GAOGAO (CN)
XIA CHANGGAO (CN)
GAO XIANG (CN)
Application Number:
PCT/CN2017/084645
Publication Date:
December 14, 2017
Filing Date:
May 17, 2017
Export Citation:
Assignee:
UNIV JIANGSU (CN)
International Classes:
B60G17/0165; B60B35/14; B60K17/04; B62D49/08
Foreign References:
| CN106043473A | 2016-10-26 | |||
| CN206171100U | 2017-05-17 | |||
| CN103144498A | 2013-06-12 | |||
| CN104428199A | 2015-03-18 | |||
| CN104149573A | 2014-11-19 | |||
| US9133586B2 | 2015-09-15 | |||
| DE102005060173A1 | 2006-07-13 |
Attorney, Agent or Firm:
JW IP LAW FIRM (CN)
Download PDF:
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