GB1006738A - Improvements in or relating to lifts - Google Patents

Improvements in or relating to lifts

Info

Publication number
GB1006738A
GB1006738A GB1442/64A GB144264A GB1006738A GB 1006738 A GB1006738 A GB 1006738A GB 1442/64 A GB1442/64 A GB 1442/64A GB 144264 A GB144264 A GB 144264A GB 1006738 A GB1006738 A GB 1006738A
Authority
GB
United Kingdom
Prior art keywords
secured
drum
brake
cage
wheel
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.)
Expired
Application number
GB1442/64A
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.)
Tornborg and Lundberg AB
Original Assignee
Tornborg and Lundberg AB
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 Tornborg and Lundberg AB filed Critical Tornborg and Lundberg AB
Publication of GB1006738A publication Critical patent/GB1006738A/en
Expired 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/03—Mechanisms with latches or braking devices in general for capstans, hoists or similar devices as well as braking devices actuated electrically or by fluid under pressure

Landscapes

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

Abstract

1,006,738. Preventing overspeeding of lift cages; hoists. TORNBORG & LUNDBERG A.B. Jan. 13, 1964 [Jan. 15, 1963], No. 1442/64. Headings B8H and B8L. A lift cage 3 is movable up and down a mast 1 by hoisting gear 9 and ropes 8, 10 which are secured to and wound in opposite directions on a rope drum 11 rotatably mounted on the cage 3, the rope 8 passing over pulleys 6, 7 on a crosshead 5 to the hoisting gear 9 and the rope 10 being secured to the crosshead 5. A device for preventing overspeeding of the cage is mounted on the cage and adapted to brake the drum 11 when the cage reaches a predetermined speed due to breakage of one of the ropes 8, 10. As shown in Fig. 3, a brake drum 24 is secured to the drum 11 and is acted on by a brake band 23 connected to arms 21, 22 on an arm 19 which is pivoted on a shaft 18. When the speed of rotation of the drums 11, 24 reaches a predetermined value, pawls 25, 26 which are pivotally mounted within the drum 24 rotate against the action of compression springs 29 and engage teeth 15 on a wheel 16, which is freely rotatable on the shaft 12 supporting the drums 11, 24, thereby rotating the wheel 16 together with a cam 17 secured thereto. Rotation of the cam 17, which is engaged by a roller 20 on the arm 19, rotates the arm 19 on the shaft 18 and thereby applies the brake. In a modification, Fig. 5, the cam 17 is replaced by pins 41, 42 which are secured to the toothed wheel 16 and which, on rotation of the wheel 16, engage an arcuate head 40 secured to link 35 of toggle linkage 34, 35, extending between pivoted arms 32, 33 which are provided with brake shoes 30. The arms 32, 33 are moved towards each other by a spring 38 to engage the brake shoes 30 with the brake drum when the wheel 16 is rotated and breaks the toggle linkage 34, 35.
GB1442/64A 1963-01-15 1964-01-13 Improvements in or relating to lifts Expired GB1006738A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE42663 1963-01-15

Publications (1)

Publication Number Publication Date
GB1006738A true GB1006738A (en) 1965-10-06

Family

ID=20256553

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1442/64A Expired GB1006738A (en) 1963-01-15 1964-01-13 Improvements in or relating to lifts

Country Status (1)

Country Link
GB (1) GB1006738A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2511995A1 (en) * 1981-08-26 1983-03-04 Verlinde Sa Safety brake for motorised lifting winch - uses speed sensor to activate electromagnet which locks ratchet wheel friction coupled to winder drum
EP0114004A1 (en) * 1983-01-13 1984-07-25 VERLINDE, Société Anonyme Safety device for a lifting apparatus, and lifting apparatus provided with this device
EP1645259A2 (en) * 2004-10-07 2006-04-12 Days Healthcare UK Limited Invalid hoist

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2511995A1 (en) * 1981-08-26 1983-03-04 Verlinde Sa Safety brake for motorised lifting winch - uses speed sensor to activate electromagnet which locks ratchet wheel friction coupled to winder drum
EP0114004A1 (en) * 1983-01-13 1984-07-25 VERLINDE, Société Anonyme Safety device for a lifting apparatus, and lifting apparatus provided with this device
EP1645259A2 (en) * 2004-10-07 2006-04-12 Days Healthcare UK Limited Invalid hoist
EP1645259A3 (en) * 2004-10-07 2007-07-04 Days Healthcare UK Limited Invalid hoist
GB2418902B (en) * 2004-10-07 2008-06-25 Days Medical Aids Ltd Invalid hoist

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