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Title:
PLANETARY ROLLER THREADED DEVICE CAPABLE OF BEING RESTORED BY MEANS OF HOLDER
Document Type and Number:
WIPO Patent Application WO/2019/210824
Kind Code:
A1
Abstract:
A planetary roller threaded device capable of being restored by means of a holder, comprising an outer threaded part (10) provided with outer threads (11) and an inner threaded part (20) provided with inner threads (21). A plurality of planetary rollers (31) are provided between the outer threads and the inner threads; the planetary rollers (31) are arranged between the outer threads and the inner threads by means of a holder (30), and the planetary rollers (31) are arranged in roller holding holes (33) of the holder (30); the end surface of the holder (30) is provided with a convex edge (36, 37); the outer threaded part (10) and/or the inner threaded part (20) are equipped with a threaded collision block (12, 22); and the threaded collision block touches the convex edge of the holder (30) in the peripheral direction of the holder (30). According to the present planetary roller threaded device, the outer threads and the inner threads are utilized to bear a one-way rotary load, and the holder is pushed to accurately restore the planetary rollers during a non-load rotation trajectory, so that the planetary rollers may be maintained at the correct working starting positions between the outer threads and the inner threads, and thus a planetary roller spiral device is guaranteed to be in a good working state.

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Inventors:
CHEN, Jimeng (No 30, Ma Jia Zhong street Ma Jia Village, Hong Shan Town, Zichuan distric, Zibo Shandong 0, 255120, CN)
LIU, Xiaoqi (Apartment 3-3-301, Beijing Garden An Jia Lou 38 Hao Yuan, Chaoyang District, Beijing 5, 100125, CN)
LIU, Xiaoxuan (Apartment 3-3-301, Beijing Garden An Jia Lou 38 Hao Yuan, Chaoyang District, Beijing 5, 100125, CN)
Application Number:
CN2019/084917
Publication Date:
November 07, 2019
Filing Date:
April 29, 2019
Export Citation:
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Assignee:
ZIBO VOTAISI PETROCHEMICAL EQUIPMENT CO., LTD. (Room 7-12 World Trade Tower A, No. 107 Liu Quan Lu High-Tech Zon, Zibo Shandong 0, 255020, CN)
International Classes:
F16K5/06; F16K5/20
Domestic Patent References:
WO2016062357A12016-04-28
Foreign References:
CN108518500A2018-09-11
CN207246470U2018-04-17
CN107606224A2018-01-19
CN107327621A2017-11-07
CN107763240A2018-03-06
CN204114216U2015-01-21
CN105899862A2016-08-24
CN106763603A2017-05-31
Attorney, Agent or Firm:
DRAGON INTELLECTUAL PROPERTY LAW FIRM (10F Bldg. 2, Maples International CenterNo. 32 Xizhimen North Street, Haidian District, Beijing 2, 100082, CN)
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