FR2409953A1 - Safety brake system for rack driven lifts - has pinion driven centrifugal weights actuating brake discs for stopping - Google Patents
Safety brake system for rack driven lifts - has pinion driven centrifugal weights actuating brake discs for stoppingInfo
- Publication number
- FR2409953A1 FR2409953A1 FR7833396A FR7833396A FR2409953A1 FR 2409953 A1 FR2409953 A1 FR 2409953A1 FR 7833396 A FR7833396 A FR 7833396A FR 7833396 A FR7833396 A FR 7833396A FR 2409953 A1 FR2409953 A1 FR 2409953A1
- Authority
- FR
- France
- Prior art keywords
- rack
- lifts
- screw thread
- pinion
- centrifugal weights
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/044—Mechanical overspeed governors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The safety stopping mechanism is used for lifts with rack drive for works and building sites. The pinion engages with the rack for speed monitoring. The pinion drives centrifugal masses which brake the lift on exceeding allowed speed. This brake system acts on lift movements in both directions. The shaft has sleeve with internal screw thread and external screw thread of opposite direction. The external screw thread carries a speed monitoring element with centrifugal weights. This body is moved along by the screw on blocking by dished spring against axially moving brake disc. Steadily increasing braking effect is built up by reaction disc and an additional brake disc up to the stop of the lift cage.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772753079 DE2753079A1 (en) | 1977-11-29 | 1977-11-29 | CATCHING DEVICE FOR ELEVATORS, IN PARTICULAR SUCH WITH RACK DRIVE |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2409953A1 true FR2409953A1 (en) | 1979-06-22 |
Family
ID=6024825
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7833396A Withdrawn FR2409953A1 (en) | 1977-11-29 | 1978-11-27 | Safety brake system for rack driven lifts - has pinion driven centrifugal weights actuating brake discs for stopping |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2753079A1 (en) |
FR (1) | FR2409953A1 (en) |
SE (1) | SE7812245L (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0279144A2 (en) * | 1986-12-23 | 1988-08-24 | MANNESMANN Aktiengesellschaft | Safety brake |
EP0475114A1 (en) * | 1990-09-13 | 1992-03-18 | Inventio Ag | Safety catch for an elevator with a speed governor attached to the cabin |
FR2682098A1 (en) * | 1991-10-04 | 1993-04-09 | Roux Etudes Realisations | Safety device for cranes, pylons and similar structures |
US11691848B2 (en) | 2017-09-07 | 2023-07-04 | Alimak Group Sweden Ab | Safely brake for an elevator |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3915304A1 (en) * | 1989-05-10 | 1990-11-15 | Schwoererhaus Gmbh & Co | Safety device for lift - has third chain connecting lift to balance weight to take the load if driving chain breaks |
CN108814408B (en) * | 2018-08-10 | 2020-07-24 | 中国建筑科学研究院有限公司建筑机械化研究分院 | Self-rescue speed limiter applied to window cleaning machine winch |
SE542493C2 (en) * | 2018-09-07 | 2020-05-26 | Alimak Group Sweden Ab | A mechanism for a safety device for a lift car, a safety device for protecting against unintended car movement of a lift car and a safety arrangement for a lift system |
CN114084770B (en) * | 2021-11-23 | 2023-07-18 | 拉弗莱防坠落***科技(苏州)有限公司 | Elevator car anti-falling device capable of avoiding falling stall |
DE102022106873A1 (en) | 2022-03-23 | 2023-09-28 | Vincorion Advanced Systems Gmbh | Emergency braking device for a cable winch with a cable drum rotatable about an axis of rotation, cable winch and method for operating an emergency braking device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2157267A5 (en) * | 1971-10-22 | 1973-06-01 | Holler Armand | |
DE2330404A1 (en) * | 1973-06-15 | 1975-01-09 | Krupp Gmbh | Lift safety brake catcher mechanism with centrifugal trip - has brake parts loaded by adjustable spring |
-
1977
- 1977-11-29 DE DE19772753079 patent/DE2753079A1/en not_active Ceased
-
1978
- 1978-11-27 FR FR7833396A patent/FR2409953A1/en not_active Withdrawn
- 1978-11-28 SE SE7812245A patent/SE7812245L/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2157267A5 (en) * | 1971-10-22 | 1973-06-01 | Holler Armand | |
DE2330404A1 (en) * | 1973-06-15 | 1975-01-09 | Krupp Gmbh | Lift safety brake catcher mechanism with centrifugal trip - has brake parts loaded by adjustable spring |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0279144A2 (en) * | 1986-12-23 | 1988-08-24 | MANNESMANN Aktiengesellschaft | Safety brake |
EP0279144A3 (en) * | 1986-12-23 | 1989-12-13 | Mannesmann Aktiengesellschaft | Safety brake |
EP0475114A1 (en) * | 1990-09-13 | 1992-03-18 | Inventio Ag | Safety catch for an elevator with a speed governor attached to the cabin |
FR2682098A1 (en) * | 1991-10-04 | 1993-04-09 | Roux Etudes Realisations | Safety device for cranes, pylons and similar structures |
US11691848B2 (en) | 2017-09-07 | 2023-07-04 | Alimak Group Sweden Ab | Safely brake for an elevator |
Also Published As
Publication number | Publication date |
---|---|
SE7812245L (en) | 1979-05-30 |
DE2753079A1 (en) | 1979-05-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |