Title:
HYDRAULIC ROTARY JOINT, ELECTRO-HYDRAULIC ROTARY CONNECTING DEVICE AND OPERATING VEHICLE
Document Type and Number:
WIPO Patent Application WO/2022/068286
Kind Code:
A1
Abstract:
Disclosed is a hydraulic rotary joint (100). The hydraulic rotary joint comprises: a core shaft (10) having a plurality of axial open holes (12) and a plurality of first open holes (14), the plurality of axial open holes being provided in the circumferential direction of the core shaft at intervals, and the plurality of axial open holes being in communication with the plurality of first open holes in a one-to-one correspondence; and a shell (20) arranged at the periphery of the core shaft, a plurality of second open holes (22) being provided in the axial direction of the shell at intervals, and one second open hole being in communication with at least two first open holes. The size of the hydraulic rotary joint can be reduced while maintaining the original large through-flow capacity of the hydraulic rotary joint, thereby fully using the internal space, and solving the problem of the large through-flow requirement of the hydraulic rotary joint being unable to be met when the mounting space is limited. Further disclosed are an electro-hydraulic rotary connecting device (400) and an operating vehicle.
Inventors:
HE DIAN (CN)
GENG XIAOCHEN (CN)
XIE TIANKUANG (CN)
GENG XIAOCHEN (CN)
XIE TIANKUANG (CN)
Application Number:
PCT/CN2021/102277
Publication Date:
April 07, 2022
Filing Date:
June 25, 2021
Export Citation:
Assignee:
SANY AUTOMOBILE MFG CO LTD (CN)
International Classes:
F16L39/06
Foreign References:
| CN112082027A | 2020-12-15 | |||
| CN212455894U | 2021-02-02 | |||
| CN211501988U | 2020-09-15 | |||
| CN210600603U | 2020-05-22 | |||
| CN102966818A | 2013-03-13 | |||
| CN111322480A | 2020-06-23 | |||
| CN211474561U | 2020-09-11 | |||
| US20170002964A1 | 2017-01-05 | |||
| DE202016101447U1 | 2017-06-19 | |||
| JP2001106472A | 2001-04-17 |
Attorney, Agent or Firm:
YOULINK INTELLECTUAL PROPERTY LAW FIRM (CN)
Download PDF: