Title:
非回転スリーブの回転防止装置及び回転誘導装置
Document Type and Number:
Japanese Patent JP6676218
Kind Code:
B2
Abstract:
The invention discloses an anti-rotating device of non-rotating sleeve. The anti-rotating device is connected with the non-rotating sleeve in such way so that the anti-rotating device can transmit circumferential acting force to the non-rotating sleeve, thus the non-rotating sleeve are prevented from rotating, the anti-rotating device comprises an anti-rotating member and a elastic member, the anti-rotating member can move in a generally radial direction of the non-rotating sleeve, and the elastic member acts on the anti-rotating member and provides acting force being substantially radially outward for the anti-rotating member. According to the anti-rotating device of the non-rotating sleeve and a rotary guiding device, on the one hand, bases can be provided for accurate attitude measurement and guiding control, on the other hand, excessively rapid rotation of the two non-rotating sleeve can be prevented only by using one anti-rotating device, and meanwhile the anti-rotating device can further provide guiding driving force based on the minimum structure size.
Inventors:
Riu, Chimpo
Tea, chin yun
One, Ziri
Chen, Wen Xuan
Two, Tiancheon
Yang, Yongyou
Ho, Xinchen
Riu, Yang
Hong, Lin Phong
Chie, chi chun
Tea, chin yun
One, Ziri
Chen, Wen Xuan
Two, Tiancheon
Yang, Yongyou
Ho, Xinchen
Riu, Yang
Hong, Lin Phong
Chie, chi chun
Application Number:
JP2019518997A
Publication Date:
April 08, 2020
Filing Date:
March 02, 2018
Export Citation:
Assignee:
Institute of Geology and Geophysics, Chinese Academy of Sciences
International Classes:
E21B7/04
Domestic Patent References:
| JP6504822A | ||||
| JP11505306A |
Foreign References:
| CN106639913A | ||||
| CN101435314A | ||||
| WO2017188935A1 |
Attorney, Agent or Firm:
Sonoda/Kobayashi Patent Business Corporation