IL43358A - Safety device for lifts hoists and like apparatus - Google Patents

Safety device for lifts hoists and like apparatus

Info

Publication number
IL43358A
IL43358A IL43358A IL4335873A IL43358A IL 43358 A IL43358 A IL 43358A IL 43358 A IL43358 A IL 43358A IL 4335873 A IL4335873 A IL 4335873A IL 43358 A IL43358 A IL 43358A
Authority
IL
Israel
Prior art keywords
safety device
brake disc
brake
hoist
stop
Prior art date
Application number
IL43358A
Other versions
IL43358A0 (en
Original Assignee
Hedstroem Ture
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 Hedstroem Ture filed Critical Hedstroem Ture
Publication of IL43358A0 publication Critical patent/IL43358A0/en
Publication of IL43358A publication Critical patent/IL43358A/en

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
    • 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
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Claims (2)

1. » A safety device for braking a hoist and the like to a stop whe its downward movement in a frame structure reaches a predetermined rate of descent, comprising: a) a member fixed to the frame structure hoist having a sleeve member within vhich a shaft is journalled to rotate with the movement of the hoist; b) a brake disc mounted to rotate about said sleeve in frictional engagement with stationary friction means effective to stop the descending movement of the hoist, and c) centrifugal means connected to and responsive to the rotational speed thereof to engage and rotate said brake disc when the rotation of the shaft reaches a predetermined velocity*
2. * A safety device according to claim 1 in which said stationary friction means Comprise a pair of brake pads disposed on opposite sides of said brake disc and adjustable tensioning means for maintaining said brake pads in engagement with said brake disc under a predetermined pressure. 3· A safety device according to claim 2. in which said adjustable tensioning means comprise bolts and associated nuts, which bolts extend through said plate, and an oppositely disposed beam member, one of the brake pads being connected to said plate member, the other brake pad being connected to the beam member* 4. A safety device according to any of claims 1 to 3 in vhich means are carried by said plate member to co-aet with means on said brake disc to stop the rotation thereon* after a predetermined number of revolutions. 13358/2 5. A safety device according to claim 4, in which the rotation stopping means comprising a spring biased rocker arm pivotally mounted on said plate member, to be moved against a stop member fixed to said plate member by an impingement member carried by said brake disc. 6. A safety device according to any of claims 1 to 5 in vhich said centrifugal means comprise an arm connected to said shaft to rotate therewith rree of said brake ddsc, at least one wing member having one end thereof pivoted to said arm to rotate therewith and to swing radially outward therefrom under the effe£t of centrifugal force at a predetermined rotational speed of said shaft into engagement with a stop member carried by said brake disc. 7. A safety device for braking a hoist and the like, substantially as hereinbefore described with reference to the accompanying drawings. For the Applicants DR. YITZHAK HESS
IL43358A 1972-12-13 1973-10-03 Safety device for lifts hoists and like apparatus IL43358A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE16279/72A SE363796B (en) 1972-12-13 1972-12-13

Publications (2)

Publication Number Publication Date
IL43358A0 IL43358A0 (en) 1974-01-14
IL43358A true IL43358A (en) 1976-11-30

Family

ID=20301984

Family Applications (1)

Application Number Title Priority Date Filing Date
IL43358A IL43358A (en) 1972-12-13 1973-10-03 Safety device for lifts hoists and like apparatus

Country Status (7)

Country Link
JP (1) JPS4988246A (en)
CA (1) CA993376A (en)
DE (1) DE2349596C2 (en)
ES (1) ES419303A1 (en)
GB (1) GB1407323A (en)
IL (1) IL43358A (en)
SE (1) SE363796B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9210142U1 (en) * 1992-07-29 1992-10-22 FAC Frank Abels Consulting & Technology GmbH, 3042 Munster Safety gear for a rack and pinion drive

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1456341A1 (en) * 1965-12-20 1968-11-28 Mauritzson & Co Ab Safety gear on lifts
BE697604A (en) * 1966-05-06 1967-10-02
US3695399A (en) * 1970-10-26 1972-10-03 Marvin R Laing Overspeed safety brake for elevators

Also Published As

Publication number Publication date
DE2349596C2 (en) 1984-02-02
DE2349596A1 (en) 1974-06-20
CA993376A (en) 1976-07-20
IL43358A0 (en) 1974-01-14
ES419303A1 (en) 1976-03-01
SE363796B (en) 1974-02-04
JPS4988246A (en) 1974-08-23
GB1407323A (en) 1975-09-24

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