Title:
PLANETARY GEARBOX, ASSEMBLY METHOD THEREOF, ASSOCIATED ROBOT JOINT AND ROBOT
Document Type and Number:
WIPO Patent Application WO/2021/016783
Kind Code:
A1
Abstract:
A planetary gearbox, an assembly method thereof, an associated robot joint and a robot are provided. The planetary gearbox (100) comprises a housing (104) extending along a first axis (X1); a first coupling member (1041) arranged on an inner circumference of the housing (104); an input component (101) operable to rotate about the first axis (X1); at least one intermediate component (102), each intermediate component (102) comprising a second coupling member (1021) and adapted to be driven by the input component (101) to rotate about a second axis (X2) offset from the first axis (X1) with the second coupling member (1021) engaging with the first coupling member (1041); and an output component (103) coupled to the at least one intermediate component (102) and operable to rotate about the first axis (X1) with rotation of the at least one intermediate component (102), wherein at least one of the first coupling member (1041) and the second coupling member (1021) comprises a synchronous belt (105). By using the synchronous belt as at least of the first and second coupling members, the assembly cost and difficulty of the planetary gearbox can be significantly reduced while overcoming the shortcomings of friction-based cycloidal gearboxes. Furthermore, the synchronous belt can be easily replaced when it is worn out, reducing the maintenance cost and difficulty. In addition, compared to the traditional cycloid reducer, the engaging pins are no longer needed, which promotes the cycloid reducer to be further lightweight.
Inventors:
SONG WEI (CN)
GU HAO (CN)
FENG TAO (CN)
GU HAO (CN)
FENG TAO (CN)
Application Number:
PCT/CN2019/098122
Publication Date:
February 04, 2021
Filing Date:
July 29, 2019
Export Citation:
Assignee:
ABB SCHWEIZ AG (CH)
SONG WEI (CN)
GU HAO (CN)
FENG TAO (CN)
SONG WEI (CN)
GU HAO (CN)
FENG TAO (CN)
International Classes:
F16H1/28; B66D1/22
Domestic Patent References:
| WO2018195419A1 | 2018-10-25 |
Foreign References:
| CN102849637A | 2013-01-02 | |||
| CN104110485A | 2014-10-22 | |||
| CN101818782A | 2010-09-01 | |||
| CN103032522A | 2013-04-10 | |||
| EP2784347A1 | 2014-10-01 |
Other References:
See also references of EP 4004404A4
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
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