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 stopping

Info

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Withdrawn
Application number
FR7833396A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elba Werk Maschinen GmbH and Co
Original Assignee
Elba Werk Maschinen GmbH and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Elba Werk Maschinen GmbH and Co filed Critical Elba Werk Maschinen GmbH and Co
Publication of FR2409953A1 publication Critical patent/FR2409953A1/en
Withdrawn legal-status Critical Current

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.
FR7833396A 1977-11-29 1978-11-27 Safety brake system for rack driven lifts - has pinion driven centrifugal weights actuating brake discs for stopping Withdrawn FR2409953A1 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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 拉弗莱防坠落系统科技(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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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