Title:
PREVENT-SLIDING DRIVE MACHINE FOR ELEVATOR
Document Type and Number:
WIPO Patent Application WO/1996/006035
Kind Code:
A1
Abstract:
A elevator drive machine includes a speed reduction unit, a driving sheave, and the first and the second driven sheaves formed over the driving sheave and arranged a triangle with the driving sheave. Each of the sheave has ratchet on its periphery, a pawl mechanism is mounted near the sheave. A speed-limiter which includes a centrifugal speed-limiter engaging with the gear of the first driven sheave and a three-branch lever, is provided on the side of driving sheave and the first driven sheave. When the dropping speed of the cab overruns the given speed, the three-branch lever moves so as to make the ratchet engage with the pawl, thus braking the driving sheave and the first driven sheave, quickly increasing the friction force of driving rope and immediately stopping the cab, it can prevent the rope from sliding on the sheaves, and have advantages of compact construction and low cost.
Inventors:
ZHONG JIANYUAN (CN)
ZHONG LEI (CN)
ZHONG LEI (CN)
Application Number:
PCT/CN1994/000064
Publication Date:
February 29, 1996
Filing Date:
August 23, 1994
Export Citation:
Assignee:
ZHONG JIANYUAN (CN)
ZHONG LEI (CN)
ZHONG LEI (CN)
International Classes:
B66B5/02; B66B5/04; B66B5/12; B66B11/08; B66D5/04; B66D5/32; F16H35/00; (IPC1-7): B66B11/04
Foreign References:
| CN1094010A | 1994-10-26 | |||
| CN86100436A | 1986-09-10 | |||
| CN2064355U | 1990-10-24 | |||
| SU652074A1 | 1979-03-15 | |||
| CN1086788A | 1994-05-18 | |||
| EP0545369A2 | 1993-06-09 |
Other References:
See also references of EP 0785161A4
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