EP0353016A2 - Electrically driven service lift - Google Patents
Electrically driven service lift Download PDFInfo
- Publication number
- EP0353016A2 EP0353016A2 EP89307527A EP89307527A EP0353016A2 EP 0353016 A2 EP0353016 A2 EP 0353016A2 EP 89307527 A EP89307527 A EP 89307527A EP 89307527 A EP89307527 A EP 89307527A EP 0353016 A2 EP0353016 A2 EP 0353016A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- doors
- lift
- car
- landing
- guides
- 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- Withdrawn
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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
- B66B13/06—Door or gate operation of sliding doors
-
- 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
- Service lifts typically comprise a tower frame work which extends through the lift shaft.
- the varying floor-to-ceiling heights of buildings in which these lifts are installed usually means that precise measurements and pre-construction are necessary to ensure that the landing doors are located at the correct height above each floor. It is a further object of the invention to provide a service lift assembly in which a landing door may readily be located at any one of a plurality of positions over the length of the lift tower framework.
- a service lift includes a door assembly comprising vertical guides on opposite sides of an access opening, two doors slidably engaging said guides, and flexible coupling means for linking said doors for simultaneous sliding movement in opposite directions towards and away from mutual abutment, said coupling means being attached to said doors adjacent the zones of mutual abutment thereof.
- a service lift includes a vertically extending tower framework one face of which is adapted to provide landing openings for access to a lift car within the framework, said one face including two spaced vertical members and transverse bracing elements securable to said vertical members at desired positions along the length thereof, said vertical members having a plurality of holes at substantially equal pitches along the lengths of said members, and two landing door frame elements secured to respective ones of said vertical members, said frame elements having holes spaced at whole number multiples of said pitches, whereby said frame elements may be secured to said frame work at desired locations, and said transverse bracing elements located clear of a landing door opening defined between said frame elements.
- a service lift includes a vertical tower framework 10 in which a lift car 11 is movable by a geared electric motor 12.
- a front face of the framework 10 includes parallel vertical members 13, 14 and a plurality of transverse bracing elements 15. Mounted between the members 13, 14 are vertically bi-parting landing doors 16, 17, later to be described in detail. Bi-parting doors, not shown in Figure 1, are also provided on the car 11.
- the car 11 is shown in chain-dotted outline in Figure 2. Secured to respective opposite sides of the car 11 are guides 20, 21, the guide 21 being shown laterally displaced in the interest of clarity.
- the guides 20, 21 define channels whose inner surfaces are lined with a suitable anti-friction material.
- Car doors 22, 23 have turned back opposite edges 24 which are freely slidable in the guides 20, 21.
- the doors 22, 23 have identical basic constructions and include flanges 25, 26 on their horizontal edges. Portions of the flange 25 are removed on both doors, as indicated at 27.
- the door 22 corresponds to the door 23 in a reversed orientation, with an additional portion 28 of the flange 25 removed and with additional elements added, as described hereafter.
- the doors 22, 23 are movable between open positions in which access to the inside of the car 11 is unobstructed, and shut positions in which their flanges 26 are in mutual abutment.
- respective pulleys 31, 32 Mounted on the respective guides 20, 21 by brackets 29, 30 are respective pulleys 31, 32. Thin wire cables 33, only one of which is shown, are led round the respective pulleys 31, 32 and secured to the doors 22, 23 adjacent their respective flanges 26. Since the flanges 26 abut when the doors 22, 23 are shut, and the doors move open through distances substantially equal to their respective heights, the pulleys 31, 32 may be located on the guides 20, 21 only just above the flange 25 of the door 22 in the shut position thereof. The removed portions 27 allow the flange 25 to move past the pulleys 31, 32 as the door 22 shuts. The run of the cable 33 between the pulleys 31, 32 and the door 23 lies within the turned back edges 24 of the door 22.
- a geared electric motor 40 whose output shaft 41 is secured to a further pulley 42. It will be appreciated that in the drawing the motor 40 is shown displaced from its correct position. Passing round the pulley 42 and extending between brackets 43, 44 on respective flanges 25, 26 is a fine wire cable 45. The bracket 43 and the removed portion 28 of the flange 25 provide clearance for the pulley 42.
- the bracket 44 may comprise a leaf-spring by means of which a suitable tension in the cable 45 is maintained.
- the landing door assembly shown in Figure 3 comprises two vertical guides 50, 51 secured to respective ones of the vertical members 13, 14 of the tower framework.
- the members 13, 14 comprise angle sections in which each limb has a plurality of equispaced holes at short pitches, for example 2.5mm.
- the transverse bracing elements 15 are mounted on brackets 52, 53 which are secured by bolts to the sides of the vertical members 13, 14 so that the elements 15 are spaced forwardly of the members 13, 14, whereby flanges 54 of the guides 50, 51 can pass between the members 13, 14 and the bracing elements 15.
- the flanges 54 are provided with a plurality of holes which are spaced at whole multiples of the pitches of the holes in the members 13, 14, so that the guides 50, 51 may be located at any desired vertical position on the tower framework.
- the transverse elements 15 may also readily be located to clear the landing door opening.
- doors 55, 56 whose basic construction is identical with that of the car doors 22, 23, corresponding parts being indicated by identical reference numerals.
- Pulleys 57 are mounted on the guide 54 in a manner similar to the mounting of pulleys 31, 32 of Figure 2, and cooperate with cables 49 which are connected to the doors 55, 56 adjacent the abuting flanges 26 thereof to provide movement in unison of the doors 55, 56.
- a slot 48 is provided in each edge of both of the doors 55, 56, only one such edge being shown, for clarity.
- Two slots 49 are positioned in each of the guides 50, 51 so as to be aligned with the respective slots 48 when the doors 55, 56 are shut.
- a latch 59 is pivotted on the flange 54 of the guide 50, and has projections 63 which can pass through the slots 49 in the guide 50 and engage the slots 48 in adjacent edges of the doors 55, 56 when the latter are shut thereby preventing the doors 55, 56 from opening.
- Mounted on the latch 59 is a roller 60 which is engagable by a projection on the car 11 to pivot the latch 59 clear of the slots 48, 49 and release the doors when the car 11 is at the landing opening associated with the doors.
- a plunger switch 61 is operated by the latch 59 to give an indication whether the latter is, or is not, engaged.
- a further plunger switch 62 is mounted on the guide 51 to provide an indication as to whether the doors 55, 56 are open or shut. The bifurcated construction of the latch 59 allows the projections to pass clear of the cable 49 within the guide 50.
- the door 22 includes a mechanism for causing the landing doors 55, 56 to move in unison with the car doors 22, 23.
- This mechanism comprises a non-circular shaft 70 which is restrained against axial movement but is pivotally mounted between the flanges 25, 26 of the door 22.
- a crank-arm 71 is mounted on the cab 11 so as not to be movable vertical relative thereto and is pivotal by a solenoid 72, also mounted on the cab 11.
- the crank arm 71 is slidable on the shaft 70 and has a non-circular bore so as to impart rotation to the shaft 70.
- a tongue 73 is secured to the shaft 70 and is movable by the solenoid 72 between a position in which it is aligned with the flange 25 and a position in which it extends forwardly of the door 22 to engage one or other of a plurality of recesses defined between brackets 74 on the door 55 ( Figure 3).
Abstract
Description
- It is known to provide electrically driven service lifts for goods and documents. The shafts of such lifts generally have small cross sections, which precludes the lift doors from being operated horizontally. It is commonly required that the landing doors shall be vertically bi-parting. It is also desirable that the lift car shall have similar doors, to prevent articles in the car from overhanging. When large quantities of articles are to be transported by such a lift it is also desirable that both the car and landing doors shall open and close automatically, and substantially in unison. The operating mechanism for the doors should preferable extend for a minimum vertical distance outside the overall dimensions of the doors, in their shut conditions.
- It is an object of the invention to provide a service lift in which the foregoing requirements are meet.
- It is a further object of the invention to provide a service lift which also includes means for positively locking the landing doors shut when the lift car is not stationary adjacent those landing doors.
- Service lifts typically comprise a tower frame work which extends through the lift shaft. The varying floor-to-ceiling heights of buildings in which these lifts are installed usually means that precise measurements and pre-construction are necessary to ensure that the landing doors are located at the correct height above each floor. It is a further object of the invention to provide a service lift assembly in which a landing door may readily be located at any one of a plurality of positions over the length of the lift tower framework.
- According to the invention a service lift includes a door assembly comprising vertical guides on opposite sides of an access opening, two doors slidably engaging said guides, and flexible coupling means for linking said doors for simultaneous sliding movement in opposite directions towards and away from mutual abutment, said coupling means being attached to said doors adjacent the zones of mutual abutment thereof.
- According to another aspect of the invention a service lift includes a vertically extending tower framework one face of which is adapted to provide landing openings for access to a lift car within the framework, said one face including two spaced vertical members and transverse bracing elements securable to said vertical members at desired positions along the length thereof, said vertical members having a plurality of holes at substantially equal pitches along the lengths of said members, and two landing door frame elements secured to respective ones of said vertical members, said frame elements having holes spaced at whole number multiples of said pitches, whereby said frame elements may be secured to said frame work at desired locations, and said transverse bracing elements located clear of a landing door opening defined between said frame elements.
- An embodiment of the invention will now be described by way of example only and with reference to the accompanying drawings in which:-
- Figure 1 is pictorial view of part of a service lift assembly,
- Figure 2 is an exploded pictorial view of a door assembly for car of the lift and
- Figure 3 is an exploded pictorial view of a landing door assembly.
- As shown in Figure 1 a service lift includes a
vertical tower framework 10 in which alift car 11 is movable by a gearedelectric motor 12. A front face of theframework 10 includes parallelvertical members transverse bracing elements 15. Mounted between themembers landing doors car 11. - The
car 11 is shown in chain-dotted outline in Figure 2. Secured to respective opposite sides of thecar 11 areguides guide 21 being shown laterally displaced in the interest of clarity. Theguides Car doors opposite edges 24 which are freely slidable in theguides doors flanges flange 25 are removed on both doors, as indicated at 27. Thedoor 22 corresponds to thedoor 23 in a reversed orientation, with anadditional portion 28 of theflange 25 removed and with additional elements added, as described hereafter. Thedoors car 11 is unobstructed, and shut positions in which theirflanges 26 are in mutual abutment. - Mounted on the
respective guides brackets respective pulleys 31, 32.Thin wire cables 33, only one of which is shown, are led round therespective pulleys 31, 32 and secured to thedoors respective flanges 26. Since theflanges 26 abut when thedoors pulleys 31, 32 may be located on theguides flange 25 of thedoor 22 in the shut position thereof. The removedportions 27 allow theflange 25 to move past thepulleys 31, 32 as thedoor 22 shuts. The run of thecable 33 between thepulleys 31, 32 and thedoor 23 lies within the turned backedges 24 of thedoor 22. - Mounted on top of the
car 11 is a gearedelectric motor 40 whoseoutput shaft 41 is secured to afurther pulley 42. It will be appreciated that in the drawing themotor 40 is shown displaced from its correct position. Passing round thepulley 42 and extending betweenbrackets respective flanges bracket 43 and the removedportion 28 of theflange 25 provide clearance for thepulley 42. Thebracket 44 may comprise a leaf-spring by means of which a suitable tension in the cable 45 is maintained. - It will be apparent that rotation of the
pulley 42 in respective opposite directions moves thedoor 22 to and from its open and shut positions, this movement being simultaneously applied through thecables 33 to thedoor 23. - The landing door assembly shown in Figure 3 comprises two
vertical guides vertical members members transverse bracing elements 15 are mounted onbrackets vertical members elements 15 are spaced forwardly of themembers flanges 54 of theguides members bracing elements 15. Theflanges 54 are provided with a plurality of holes which are spaced at whole multiples of the pitches of the holes in themembers guides transverse elements 15 may also readily be located to clear the landing door opening. - Vertically slidable in the
guides doors car doors guide 54 in a manner similar to the mounting ofpulleys 31, 32 of Figure 2, and cooperate withcables 49 which are connected to thedoors abuting flanges 26 thereof to provide movement in unison of thedoors slot 48 is provided in each edge of both of thedoors slots 49 are positioned in each of theguides respective slots 48 when thedoors latch 59 is pivotted on theflange 54 of theguide 50, and hasprojections 63 which can pass through theslots 49 in theguide 50 and engage theslots 48 in adjacent edges of thedoors doors latch 59 is aroller 60 which is engagable by a projection on thecar 11 to pivot thelatch 59 clear of theslots car 11 is at the landing opening associated with the doors. A plunger switch 61 is operated by thelatch 59 to give an indication whether the latter is, or is not, engaged. Afurther plunger switch 62 is mounted on theguide 51 to provide an indication as to whether thedoors latch 59 allows the projections to pass clear of thecable 49 within theguide 50. - Referring back to Figure 2 the
door 22 includes a mechanism for causing thelanding doors car doors non-circular shaft 70 which is restrained against axial movement but is pivotally mounted between theflanges door 22. A crank-arm 71 is mounted on thecab 11 so as not to be movable vertical relative thereto and is pivotal by asolenoid 72, also mounted on thecab 11. Thecrank arm 71 is slidable on theshaft 70 and has a non-circular bore so as to impart rotation to theshaft 70. Atongue 73 is secured to theshaft 70 and is movable by thesolenoid 72 between a position in which it is aligned with theflange 25 and a position in which it extends forwardly of thedoor 22 to engage one or other of a plurality of recesses defined betweenbrackets 74 on the door 55 (Figure 3). - When the
car 11 is sensed by suitable means as being stationary at a selected landing door and the latch 59 (Figure 3) is sensed by the switch 61 as being disengaged, the solenoid 72 (Figure 2) is operated so that thetongue 73 engages thebrackets 74. Themotor 40 is then energised to open thedoors tongue 73 causing thedoors solenoid 72 disengages thetongue 73 from thedoor 55 and thedoors car 11.
Claims (6)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8817746 | 1988-07-26 | ||
GB888817746A GB8817746D0 (en) | 1988-07-26 | 1988-07-26 | Electrically driven service lift |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0353016A2 true EP0353016A2 (en) | 1990-01-31 |
EP0353016A3 EP0353016A3 (en) | 1990-04-25 |
Family
ID=10641101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89307527A Withdrawn EP0353016A3 (en) | 1988-07-26 | 1989-07-25 | Electrically driven service lift |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0353016A3 (en) |
GB (1) | GB8817746D0 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2661709A1 (en) * | 1990-05-07 | 1991-11-08 | Sotoma | Device for the automatic control of the guillotine-type doors associated with a goods lift |
FR2667305A1 (en) * | 1990-10-02 | 1992-04-03 | Prudhomme Dominique | Large width goods lift |
EP2639195A2 (en) | 2012-03-13 | 2013-09-18 | Stefan Köpfli | Small goods cabin for a dumb waiter |
CN114852827A (en) * | 2022-04-28 | 2022-08-05 | 江苏润劦能源科技有限公司 | Frame type maintenance lifter for fan tower barrel |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2509712A (en) * | 1947-06-25 | 1950-05-30 | Haughton Elevator Company | Means for closing elevator doors |
US2633932A (en) * | 1951-02-21 | 1953-04-07 | William C Clift | Elevator door operator mechanism |
-
1988
- 1988-07-26 GB GB888817746A patent/GB8817746D0/en active Pending
-
1989
- 1989-07-25 EP EP89307527A patent/EP0353016A3/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2509712A (en) * | 1947-06-25 | 1950-05-30 | Haughton Elevator Company | Means for closing elevator doors |
US2633932A (en) * | 1951-02-21 | 1953-04-07 | William C Clift | Elevator door operator mechanism |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2661709A1 (en) * | 1990-05-07 | 1991-11-08 | Sotoma | Device for the automatic control of the guillotine-type doors associated with a goods lift |
FR2667305A1 (en) * | 1990-10-02 | 1992-04-03 | Prudhomme Dominique | Large width goods lift |
EP2639195A2 (en) | 2012-03-13 | 2013-09-18 | Stefan Köpfli | Small goods cabin for a dumb waiter |
CN114852827A (en) * | 2022-04-28 | 2022-08-05 | 江苏润劦能源科技有限公司 | Frame type maintenance lifter for fan tower barrel |
Also Published As
Publication number | Publication date |
---|---|
EP0353016A3 (en) | 1990-04-25 |
GB8817746D0 (en) | 1988-09-01 |
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Legal Events
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17P | Request for examination filed |
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17Q | First examination report despatched |
Effective date: 19920214 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 19920625 |