Title:
UPPER-DRIVE-TYPE MAIN SHAFT COMPOSITE BODY FOR CENTRIFUGAL SUPERGRAVITY DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/196487
Kind Code:
A1
Abstract:
An upper-drive-type main shaft composite body for a centrifugal supergravity device. The upper end of a main shaft (59) is coaxially and fixedly connected to the lower end of a slip ring shaft (52), and the upper end of the slip ring shaft (52) has a slip ring (51) sleeved thereon; a magnetic fluid sealing structure (511) and a sealing flange (513) are mounted at the middle of the main shaft (59); the magnetic fluid sealing structure (511) comprises a bearing cover (511-2), a deep-groove ball bearing (511-3), a housing (511-4) and an O-shaped ring (511-7); an annular notch groove is provided at the circumferential surface of an inner ring at the top of the sealing flange (513), an oil seal (513-1) is mounted in the annular notch groove, an elastic check ring (513-2) for a hole is arranged on the upper side of the oil seal (513-1), an annular groove is provided in a surface of an annular step of the sealing flange (513), and a sealing ring (513-3) is mounted in the annular groove; and the lower end of the main shaft (59) is coaxially and fixedly connected to a connecting flange (515) by means of an expansion sleeve (516). The upper-drive-type main shaft composite body solves the key problem of a lower-drive-type main shaft composite body wherein same cannot achieve automatic leveling and load active separation from a main shaft under a high-rotating-speed, high-load and vacuum environment; and same can meet working conditions of different rotating speeds, is suitable for special working conditions of a long time, a high vacuum and an excessive rotating speed, and can achieve an automatic leveling function of a load under the action of the gravity thereof.
Inventors:
WEI HUA (CN)
ZHANG ZE (CN)
CHEN YUNMIN (CN)
LIN WEIAN (CN)
ZHANG ZE (CN)
CHEN YUNMIN (CN)
LIN WEIAN (CN)
Application Number:
PCT/CN2020/107736
Publication Date:
October 07, 2021
Filing Date:
August 07, 2020
Export Citation:
Assignee:
UNIV ZHEJIANG (CN)
International Classes:
F16C3/02
Foreign References:
| CN106812781A | 2017-06-09 | |||
| CN107917144A | 2018-04-17 | |||
| CN201818794U | 2011-05-04 | |||
| CN111486169A | 2020-08-04 | |||
| CN107891158A | 2018-04-10 | |||
| KR101896289B1 | 2018-09-11 |
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO., LTD. (CN)
Download PDF:
Previous Patent: RADIO FREQUENCY CONNECTOR ASSEMBLY
Next Patent: CANTILEVER-TYPE CENTRIFUGAL SUPER-GRAVITY CASTING DEVICE
Next Patent: CANTILEVER-TYPE CENTRIFUGAL SUPER-GRAVITY CASTING DEVICE