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Patent Searching and Data


Title:
SAFETY BRAKING SYSTEM FOR CAR GUIDE RAIL OF DRAGGING ELEVATOR
Document Type and Number:
WIPO Patent Application WO/2019/210789
Kind Code:
A1
Abstract:
Provided is a safety braking system for a car guide rail of dragging an elevator. The safety braking system comprises: a speed governor, provided with a driving and a driven shaft (2, 3); and a safety gear, comprising a base (4), a gear body (5) and an elastic positioning device, wherein the speed governor is associated with the safety gear; a stopping block (51) is arranged on the gear body (5); left and right inner wedge blocks (6) are arranged in the gear body (5); outer wedge blocks (7) are arranged on outer sides of the inner wedge blocks (6); a limiting mechanism for limiting positions of the inner and outer wedge blocks (6, 7) is arranged on the base (4); the elastic positioning device enables larger ends of the inner and outer wedge blocks (6, 7) to be far away from each other in an up-down direction; and the limiting mechanism limits the inner and outer wedge blocks (6, 7) at an initial position in the up-down direction. When the rotation speed of the driving shaft (2) reaches a rated speed, the driving shaft (2) is connected to the driven shaft (3) via a centrifugal clutch structure, thus driving the movement of the gear body (5); and the stopping block (51) on the gear body (5) enables the larger ends of the inner and outer wedge blocks (6, 7) to get close to each other, thus the two inner wedge blocks (6) get close to each other to enter a brake state, so that bidirectional progressive brake can be realized for the car, thereby ensuring the car to have relatively high security.

Inventors:
CHEN, Qing (No.11415, Building 1 Unit 14, Xujing Xingyuan, Fengcheng Sixth Road, Economic and Technological Development Zon, Xi'an Shaanxi 1, 710021, CN)
DENG, Jian (No.11415, Building 1 Unit 14, Xujing Xingyuan, Fengcheng Sixth Road, Economic and Technological Development Zon, Xi'an Shaanxi 1, 710021, CN)
LI, Jun (No.11415, Building 1 Unit 14, Xujing Xingyuan, Fengcheng Sixth Road, Economic and Technological Development Zon, Xi'an Shaanxi 1, 710021, CN)
Application Number:
CN2019/083659
Publication Date:
November 07, 2019
Filing Date:
April 22, 2019
Export Citation:
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Assignee:
SHANXI XIAOXI MECHANICAL & ELECTRICAL TECHNOLOGY CO., LTD. (No.11415, Building 1 Unit 14, Xujing Xingyuan, Fengcheng Sixth Road, Economic and Technological Development Zon, Xi'an Shaanxi 1, 710021, CN)
International Classes:
B66B5/04; B66B5/18
Foreign References:
CN101112955A2008-01-30
CN208345519U2019-01-08
CN208345521U2019-01-08
CN205953255U2017-02-15
CN2776935Y2006-05-03
CN2444924Y2001-08-29
JP2003292261A2003-10-15
Attorney, Agent or Firm:
HANGZHOU HANGCHENG PATENT ATTORNEY OFFICE CO., LTD. (Rm 505, No.1 Wanxin Building No.35 Xihu Rd, Hangzhou Zhejiang 9, 310009, CN)
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