Title:
TRANSPORTATION TROLLEY
Document Type and Number:
WIPO Patent Application WO/2018/107674
Kind Code:
A1
Abstract:
Provided is a transportation trolley, comprising a chassis (10) and wheel group structures (20). Either side of the chassis (10) is pivotally connected to at least one wheel group structure (20). The wheel group structure (20) comprises a connector (23) and two wheels (21, 22) pivotally arranged on the connector (23), the connector (23) having a pivotal connection point used for pivotal connection with the chassis (10), and the pivotal connection point being located between the two wheels (21, 22). By changing the connection method between the wheels and the chassis, when the trolley is travelling on uneven ground, the height of the two wheels above the ground is automatically adjusted by gravity so as to facilitate the wheels being in close contact with the ground.
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Inventors:
LIU ZHE (CN)
Application Number:
PCT/CN2017/087221
Publication Date:
June 21, 2018
Filing Date:
June 05, 2017
Export Citation:
Assignee:
ZHUINENG ROBOTICS SHANGHAI CO LTD (CN)
International Classes:
B60G21/045
Domestic Patent References:
| WO2012123630A1 | 2012-09-20 |
Foreign References:
| CN206242849U | 2017-06-13 | |||
| CN106739917A | 2017-05-31 | |||
| CN104590420A | 2015-05-06 | |||
| CN202219718U | 2012-05-16 | |||
| CN106002917A | 2016-10-12 | |||
| CN105292300A | 2016-02-03 | |||
| CN105329335A | 2016-02-17 | |||
| CN205709696U | 2016-11-23 | |||
| CN106064717A | 2016-11-02 | |||
| CN106132734A | 2016-11-16 | |||
| US20160297065A1 | 2016-10-13 |
Other References:
See also references of EP 3556581A4
Attorney, Agent or Firm:
XU & PARTNERS,LLC. (CN)
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