US3921763A - Motor driven hoist device for simultaneous lifting of a cage gate and a gate at a stopping level - Google Patents

Motor driven hoist device for simultaneous lifting of a cage gate and a gate at a stopping level Download PDF

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Publication number
US3921763A
US3921763A US399874A US39987473A US3921763A US 3921763 A US3921763 A US 3921763A US 399874 A US399874 A US 399874A US 39987473 A US39987473 A US 39987473A US 3921763 A US3921763 A US 3921763A
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US
United States
Prior art keywords
gate
cage
hoist
stopping level
hoist cage
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 - Lifetime
Application number
US399874A
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English (en)
Inventor
Tage Westerlund
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.)
Linden Alimak AB
Original Assignee
Linden Alimak 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 Linden Alimak AB filed Critical Linden Alimak AB
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Publication of US3921763A publication Critical patent/US3921763A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02—Door or gate operation
    • B66B13/12—Arrangements for effecting simultaneous opening or closing of cage and landing doors

Definitions

  • the cage gate and a gate at a stopping level of a hoist are simultaneously opened by means of a motor.
  • the motor is preferably mounted on the roof of the hoist cage and is able to lift or lower a vertical lifting rod that at its lower end via a lever means is connected to the cage gate.
  • the lever means comprises two horizontal arms that project towards the stopping level gates.
  • the stopping level gates have each a vertical rail projecting towards the cage gate in between the horizontal arms of the cage gate. Upon lifting the lifting rod the lever means actuates the arms towards 'each other and they will grip the rail of the stopping level gate and both gates will be lifted together by the lifting rod. Closing of the gates is carried out in reverse order.
  • One of the advantages of the device according to the invention is i.a. that only one motor is necessary for lifting both the gates by coupling them together at the start of the lifting operation.
  • the gates at the stopping levels can without inconvenience be made so heavy that they can be opened manually only with difficulty and need not, in that case, be especially interlocked.
  • all the required electric equipment for operation and adjustment of the gates can be placed in the hoist cage, which is especially important at shipyard hoists, where it is often desired to place the hoist at the bottom of a dock, where the lowermost stopping level will sometimes be below water level.
  • FIG. 1 shows a front view of a lower portion ofa gate of a hoist cage with removed gate of the stopping level, when the cage gate is in a position completely pushed down, viz. closed position, and
  • FIG. 2 shows a top view of the device according to FIG. 1 together with a gate of a stopping level.
  • a gate of a hoist cage is designated by 1, and 2 is the lower edge of the gate.
  • the gate of the hoist cage is mounted vertically movable in the hoist cage and vertically liftable and lowerable by means of a motor-3, arranged on the roof 31 of the hoist cage.
  • the motor acts upon a rack 5 on a vertical rod 6 via a gear 4.
  • the rod 6 is connected via a lever means 7 to the gate 1 of the hoist cage at the latters lower edge 2.
  • the lever means 7 comprises an upper hinge 8, in which the end of the rod 6 and the ends of two arms 9 and 10 arranged symmetrically around the axis of the rod 6 are rotatably mounted.
  • the other ends of the arms 9 and 10 are rotatably mounted viahinges 11 and 12 to the ends of arms 13 and 14, also arranged symmetrically around the axis of the rod 6.
  • the other ends of the arms 13 and 14 are rotatably connected via shafts 15 and 16 with a plate section 17 connected with the cage gate 1.
  • Arms 18 and 19 projecting from the cage gate 1 in adirection from the hoist cage are each rigidly connected to the interior ends of the arms 13 and 14, ie the ends with the shaft 15 and 16. These arms 18 and 19 are intended to grip by means of shoulders 20 and 21 a rail 22 extending vertically and arranged on a gate at the stopping level 23 and perpendicularly to same (see FIG. 2) in front of the cage gate 1.
  • the motor 3 is started in suitable manner, after which the rod 6 with the rack 5 kept against the gear 4 by a counter roller 24 is moved upwards from-the position shown in FIG. 1.
  • the rotational motionof the grip arms v18 and 19 will then be stopped and consequently the motion of the whole lever means relative to the gate of the cage and that of the stopping level'which will be lifted together at the continued motion of the rod 6 in coupled state.
  • the tappet 25 has been placed upwards from its considerably lower, real position, which in FIG. 1 is at the cut off portion of the rod 6 for technical reasons in respect of the drawing.
  • the motor 3 is started in the other direction, the rod 6 with the gates moving downwards until the cage gate 1 is stopped by dogs not shown, after which the rod 6 continues a bit further at the same time as the grip arms 18 and 19 are opened by means of the lever means 7, the gate 23 at the stopping level being disconnected from the cage gate 1 and the position shown in FIG. 1 and 2 being entered.
  • the motor 3 is stopped by another limit switch 30, which is actuated by another tappet 28 via a roller 29.
  • the grip arms 18 and 19 are arranged so that at closed cage gate, viz. the position shown in FIG. 1 and 2, they will be separated laterally from the rails 22 of the gates at the stopping levels such that the hoist .cage can pass the various stopping levels without any inconvenience.
  • the device functions even if the hoist cage stops a few cm too high or too low.
  • a shield 32 with a slit 33 as a lead-through for a pin in the hinge 8 connecting the rod 6 and the lever means 7 is further arranged between the lever means 7 and the interior of the hoist cage.
  • the invention is not restricted to the use of a rod 6 with a rack 5 for lifting thegates, but instead a wire can for instance be used if the lever means 7 is supplemented with a spring, which keeps the grip arms 18 and 19 apart when the gate is closed.
  • the improvement which comprises a device for simultaneously raising the gate of the hoist cage and the gate at a stopping level which comprises in combination a. motorized lifting means on said hoist cage for applying an upward lifting force,

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  • Types And Forms Of Lifts (AREA)
  • Elevator Door Apparatuses (AREA)
US399874A 1972-09-25 1973-09-24 Motor driven hoist device for simultaneous lifting of a cage gate and a gate at a stopping level Expired - Lifetime US3921763A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE12331/72A SE366715B (ja) 1972-09-25 1972-09-25

Publications (1)

Publication Number Publication Date
US3921763A true US3921763A (en) 1975-11-25

Family

ID=20295561

Family Applications (1)

Application Number Title Priority Date Filing Date
US399874A Expired - Lifetime US3921763A (en) 1972-09-25 1973-09-24 Motor driven hoist device for simultaneous lifting of a cage gate and a gate at a stopping level

Country Status (6)

Country Link
US (1) US3921763A (ja)
JP (1) JPS4970357A (ja)
CA (1) CA988110A (ja)
DE (1) DE2347916A1 (ja)
GB (1) GB1389777A (ja)
SE (1) SE366715B (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015688A (en) * 1975-06-23 1977-04-05 Karl Mangel Master door operator for vertically movable elevator gates and landing doors
US4108283A (en) * 1977-01-21 1978-08-22 Karl Mangel Master operator for vertically moving elevator car doors
US5730254A (en) * 1995-07-21 1998-03-24 Vertisys, Inc. Elevator door restraint device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1204176B (it) * 1986-02-07 1989-03-01 Selcom Spa Dispositivo per il comando della apertura e della chiusura di porte ad ante scorrevoli per ascensori
KR100965917B1 (ko) 2008-03-28 2010-06-24 주식회사 리프텍 산업용 승강기에 구비된 안전문 개폐장치
KR100927651B1 (ko) * 2008-12-24 2009-11-20 (주)영진엘리베이터 승강기 도어 개폐 장치

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2497080A (en) * 1946-04-19 1950-02-14 Guilbert Inc Operating means for sliding elevator doors
US2633932A (en) * 1951-02-21 1953-04-07 William C Clift Elevator door operator mechanism
US3051269A (en) * 1958-04-25 1962-08-28 Guilbert Inc Power operator for elevator shaftway doors

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2497080A (en) * 1946-04-19 1950-02-14 Guilbert Inc Operating means for sliding elevator doors
US2633932A (en) * 1951-02-21 1953-04-07 William C Clift Elevator door operator mechanism
US3051269A (en) * 1958-04-25 1962-08-28 Guilbert Inc Power operator for elevator shaftway doors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015688A (en) * 1975-06-23 1977-04-05 Karl Mangel Master door operator for vertically movable elevator gates and landing doors
US4108283A (en) * 1977-01-21 1978-08-22 Karl Mangel Master operator for vertically moving elevator car doors
US5730254A (en) * 1995-07-21 1998-03-24 Vertisys, Inc. Elevator door restraint device

Also Published As

Publication number Publication date
DE2347916A1 (de) 1974-05-09
CA988110A (en) 1976-04-27
JPS4970357A (ja) 1974-07-08
SE366715B (ja) 1974-05-06
GB1389777A (en) 1975-04-09

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