Title:
ROPE SLACK-PREVENTING DEVICE OF LIFT
Document Type and Number:
WIPO Patent Application WO/2012/024927
Kind Code:
A1
Abstract:
A rope slack-preventing device of a lift includes a rope end plate (8), a rotating component (2), a switch fixing frame (3) and a supporting frame of the rotating component. Under the rope end plate (8), the rotating component (2) is suspended by the supporting frame of the rotating component and a safety switch (4) is suspended by the switch fixing frame (3). The supporting frame of the rotating component includes a fixing-supporting plate (6) and an elastic support column. One end of the fixing-supporting plate (6) is fixedly connected with the rope end plate (8), and the other end is hinged with the rotating component (2) by a pin shaft (7). The elastic support column includes a screw rod (1) and a pressing spring (5) sleeved around the screw rod. When the rotating component (2) is pressed to rotate around the pin shaft, the switch striking plate pushes the movable contact of the safety switch (4). The device can automatically cut off power supply to brake the lift such that accident of clashing head due to breakage of steel wire rope during the car running is effectively avoided and safety of the lift is guaranteed during the lift operation. The quality of the product can be effectively improved.
Inventors:
WANG YOULIN (CN)
ZHANG JIANHONG (CN)
YU CHENG (CN)
WANG SHENGHUI (CN)
ZHANG JIANHONG (CN)
YU CHENG (CN)
WANG SHENGHUI (CN)
Application Number:
PCT/CN2011/072543
Publication Date:
March 01, 2012
Filing Date:
April 08, 2011
Export Citation:
Assignee:
CANNY ELEVATOR CO LTD (CN)
WANG YOULIN (CN)
ZHANG JIANHONG (CN)
YU CHENG (CN)
WANG SHENGHUI (CN)
WANG YOULIN (CN)
ZHANG JIANHONG (CN)
YU CHENG (CN)
WANG SHENGHUI (CN)
International Classes:
B66B5/12
Foreign References:
| CN101941625A | 2011-01-12 | |||
| CN201737552U | 2011-02-09 | |||
| CN201334290Y | 2009-10-28 | |||
| CN2897955Y | 2007-05-09 | |||
| CN201190063Y | 2009-02-04 | |||
| CN201334291Y | 2009-10-28 | |||
| CN1077932A | 1993-11-03 | |||
| JPH11171425A | 1999-06-29 | |||
| JP2008189462A | 2008-08-21 | |||
| JP2003201079A | 2003-07-15 |
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., (CN)
南京经纬专利商标代理有限公司 (CN)
南京经纬专利商标代理有限公司 (CN)
Download PDF:
Claims:
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