EP2609028A1 - Dispositif de commande de la position d'un élément de blocage dans un système d'ascenseur - Google Patents

Dispositif de commande de la position d'un élément de blocage dans un système d'ascenseur

Info

Publication number
EP2609028A1
EP2609028A1 EP10856342.0A EP10856342A EP2609028A1 EP 2609028 A1 EP2609028 A1 EP 2609028A1 EP 10856342 A EP10856342 A EP 10856342A EP 2609028 A1 EP2609028 A1 EP 2609028A1
Authority
EP
European Patent Office
Prior art keywords
cable
hoistway
lever
blocking member
movement
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.)
Granted
Application number
EP10856342.0A
Other languages
German (de)
English (en)
Other versions
EP2609028B1 (fr
EP2609028A4 (fr
Inventor
Aurélien FAUCONNET
Nicolas Guillot
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.)
Otis Elevator Co
Original Assignee
Otis Elevator 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 Otis Elevator Co filed Critical Otis Elevator Co
Publication of EP2609028A1 publication Critical patent/EP2609028A1/fr
Publication of EP2609028A4 publication Critical patent/EP2609028A4/fr
Application granted granted Critical
Publication of EP2609028B1 publication Critical patent/EP2609028B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B66B5/0043—Devices enhancing safety during maintenance
    • B66B5/005—Safety of maintenance personnel
    • B66B5/0056—Safety of maintenance personnel by preventing crushing

Definitions

  • Elevator systems include a variety of devices to protect mechanics or technicians during inspection and maintenance procedures. With the introduction of machine roomless elevator systems, new challenges were presented for maintaining an adequate clearance above the top of an elevator car. In machine roomless systems and other low overhead elevator systems, it is necessary to ensure that there is adequate space above an elevator car to accommodate an individual on top of the car during a maintenance or inspection procedure.
  • One proposal includes providing a blocking member near a bottom of a hoistway to prevent a counterweight from descending below a selected vertical position in the hoistway.
  • the blocking member prevents the counterweight from dropping below a position in which the elevator car would be considered too close to the top of the hoistway, for example.
  • One such blocking member that is available from Otis Elevator Company has to be manually reset to move the blocking member out of a blocking position when a maintenance or inspection procedure is complete.
  • a manually resettable blocking member One challenge presented by a manually resettable blocking member is that it either would require an individual to enter the pit of the hoistway to manually manipulate the blocking member or it would require a relatively significant amount of force to pull on the blocking member from a higher position within the hoistway, in order for the blocking member to be manually reset.
  • An exemplary device for controlling the position of a blocking member in an elevator hoistway includes a first cable that is connected to the blocking member near a first end of the first cable.
  • a second cable has a first end and a second end.
  • a lever is connected to the first cable and the second cable near the second ends of the cables.
  • the first cable is connected near one end of the lever and the second cable is connected near an opposite end of the lever. Movement of the second cable causes corresponding movement of the lever and the first cable to change a position of the blocking member within the hoistway.
  • An exemplary elevator system includes an elevator car that is moveable within a hoistway.
  • a counterweight is coupled with the elevator car for corresponding movement in the hoistway.
  • a blocking member is moveable between a blocking position and a retracted position.
  • the blocking member limits vertical movement of the counterweight when the blocking member is in the blocking position.
  • the blocking member is clear of the counterweight in the retracted position.
  • a first cable is connected to the blocking member near a first end of the first cable.
  • a second cable has a first end and a second end.
  • a lever is connected to the first cable and the second cable near the second ends of each of the cables. The first cable is connected near one end of the lever and the second cable is connected near an opposite end of the lever. Movement of the second cable causes corresponding movement of the lever and the first cable to change a position of the blocking member within the hoistway.
  • Figure 1 schematically shows selected portions of an example elevator system.
  • Figure 2 schematically shows additional features of the example elevator system of Figure 1.
  • Figure 3 schematically shows interaction between a lever and a guide member in one example embodiment.
  • Figure 4 schematically shows movement of a blocking member in one example embodiment.
  • FIG. 5 schematically shows another embodiment of an example elevator system. DETAILED DESCRIPTION
  • FIG. 1 schematically shows selected portions of an elevator system 20.
  • An elevator car 22 is coupled with a counterweight 24 for movement within a hoistway 26.
  • a blocking member 32 is provided near a bottom 36 of the hoistway 26 such as within a pit, for example.
  • the blocking member 32 is selectively moveable between a blocking position shown in solid lines in Figure 1 and a retracted position shown in phantom lines at 32' in Figure 1.
  • the blocking member 32 When the blocking member 32 is in the blocking position, the counterweight 24 is limited from descending all the way within the hoistway 26.
  • the blocking member 32 maintains a desired clearance between the bottom of the counterweight 24 and the bottom 36 of the hoistway 26.
  • a desired amount of clearance is maintained between a top of the elevator car 22 and an overhead surface 38 such as the top of the hoistway 26.
  • Such clearance provides adequate space to accommodate an individual 40 such as a mechanic or technician on top of the elevator car 22 during a maintenance or inspection procedure, for example.
  • the example blocking member 32 may be automatically deployed into the blocking position 32 for purposes of conducting a maintenance or inspection procedure.
  • the blocking member 32 has to be manually reset into the retracted position 32'.
  • Figure 2 schematically illustrates a device for controlling the position of the blocking member 32 between the blocking position and the retracted position.
  • the blocking member 32 is shown adjacent a guiderail 50 that guides vertical movement of the car 22 or the counterweight 24 (not shown in Figure 2) within the hoistway 26.
  • a first cable 52 is connected with the blocking member 32 near a first end 54 of the first cable 52. The first cable 52 is aligned parallel with the guiderail 50 within the hoistway 26.
  • a second cable 56 is aligned parallel with the first cable 52.
  • the second cable 56 has a first end 58 near the bottom of the hoistway 36 and a second end 60 near the top 38 of the hoistway 26.
  • a first lever 62 is connected to the second cable 56 near the first end
  • the first lever 62 is pivotally supported by a portion 33 of the blocking member 32 that remains fixed or stationary in the hoistway near one end 64 of the first lever 62.
  • a bracket (not shown in Figure 2) that secures portions of the blocking member 32 to the guiderail 50 provides a pivot point near the end 64 of the first lever 62.
  • the second cable 56 is connected to the lever 62 near an opposite end 66 of the first lever 62.
  • a second lever 70 is provided near the top 38 of the hoistway 26.
  • the second lever 70 is connected to the first cable 52 near a second end 71 of the first cable 52 and near one end 72 of the second lever 70.
  • the second cable 56 is connected to the second lever 70 near the second end 60 of the second cable 56 and near an opposite end 74 of the second lever 70.
  • the "ends" of the cables and levers are not necessarily the end of the material used for those components. It is useful to consider the length of each cable between the levers as having a functional "end” at the location where the cable is connected to a lever. The operative length of each cable is that portion which is involved in moving the blocking member 32.
  • the connections between the levers 62 and 70 and the cables 52 and 56 allows for movement of the second cable 56 to cause corresponding movement of the levers 62 and 70 and the first cable 52 in a manner that controls the position of the blocking member 32.
  • a downward force as schematically shown by the arrow 80 on the second cable 56 causes a corresponding upward movement of the first cable 52, shown schematically by the arrow 82, which results in movement of the blocking member 32.
  • upward movement of the first cable 52 causes the blocking member 32 to be pulled into the retracted position where it is clear of the counterweight 24. This allows for manually resetting the blocking member 32 by pulling down on the second cable 56.
  • the second lever 70 effectively multiplies the pulling force applied by an individual onto the second cable 56 to reduce the amount of effort required to cause sufficient upward movement in the first cable 52 to cause the blocking member 32 to be pulled into the retracted position.
  • the combination of cables and levers provides better leverage for an individual pulling down on the second cable 56 to cause upward movement of the first cable 52 and the blocking member 32 than causing upward movement of the first cable 52 alone. Pulling down on the second cable 56 is also easier in most circumstances than pulling upward on the first cable 52.
  • the second cable 56 is located near access openings into the hoistway 26.
  • a depth direction of the hoistway is shown from left to right in the drawing.
  • the illustrated example provides a more efficient arrangement that reduces the need for an individual to be on top of the elevator car 22 or to enter the pit.
  • the illustrated example includes a guide member 90 for guiding movement of the second lever 70 to cause the desired corresponding movement of the first cable 52 responsive to a downward or upward force on the second cable 56.
  • the guide member 90 provides a pivot about which the second lever 70 is moveable.
  • the guide member 90 comprises a bracket that includes a groove 92.
  • a follower member such as a boss 94 on the second lever 70 is at least partially received within the groove 92.
  • the follower member 94 follows along the groove 92 to cause desired movement of the second lever 70 responsive to a force upon the second cable 56.
  • the guide member 90 is set into a fixed position near the top of the hoistway.
  • FIG. 4 schematically shows movement of the blocking member 32 in one example.
  • the blocking member 32 includes a follower portion 100 that follows along a surface on the guiderail 50.
  • the follower portion 100 is pivotally connected at 102 to a body 104 of the blocking member 32.
  • the upper portion of the body 104 is moved away from the guiderail 50 (e.g., toward the right according to the illustration).
  • a sufficient downward force represented by arrow 80 in Figure 4
  • corresponding upward movement (represented by arrow 82) of the first cable 52 will pull the follower 100 upward along the guiderail 50 and cause the body 104 to move as schematically shown by the arrow 106 into the retracted position shown at 32'.
  • Figure 5 illustrates another example embodiment.
  • the first cable 52 has its first end 54 connected with the blocking member 32.
  • the first end 58 of the second cable 56 is connected with a securing member 120 near the bottom 36 of the hoistway 26.
  • the securing member 120 in one example provides a fixed point at which the first end 58 of the second cable 56 remains within the hoistway 26.
  • the securing member 120 includes a spring that allows for the first end 58 to be somewhat moveable relative to the bottom 36 of the hoistway 26.
  • the securing member 120 comprises a weight that is effectively suspended by the second cable 56.
  • the securing member 120 prevents the second cable 56 from freely moving within the hoistway 26.
  • the illustrated examples provide an efficient way of manually controlling the position of a blocking member within a hoistway.
  • the illustrated examples minimize the amount of effort required by an individual to cause manual movement of the blocking member to reset it and minimize the amount of time the individual must be within the hoistway (e.g., in a pit or on top of an elevator car).

Landscapes

  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Abstract

L'invention porte, à titre d'exemple, sur un dispositif pour la commande de la position d'un élément de blocage dans une cage d'ascenseur, lequel dispositif comprend un premier câble qui est relié à l'élément de blocage près d'une première extrémité du premier câble. Un second câble a une première extrémité et une seconde extrémité. Un levier est relié au premier câble et au second câble, près des secondes extrémités des câbles. Le premier câble est relié près d'une extrémité du levier et la seconde extrémité du second câble est reliée près d'une extrémité opposée du levier. Le déplacement du second câble entraîne un déplacement correspondant du levier et amène le premier câble à changer une position de l'élément de blocage dans la cage.
EP10856342.0A 2010-08-25 2010-08-25 Dispositif de commande de la position d'un élément de blocage dans un système d'ascenseur Active EP2609028B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2010/002348 WO2012025774A1 (fr) 2010-08-25 2010-08-25 Dispositif de commande de la position d'un élément de blocage dans un système d'ascenseur

Publications (3)

Publication Number Publication Date
EP2609028A1 true EP2609028A1 (fr) 2013-07-03
EP2609028A4 EP2609028A4 (fr) 2017-09-27
EP2609028B1 EP2609028B1 (fr) 2020-02-26

Family

ID=45722951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10856342.0A Active EP2609028B1 (fr) 2010-08-25 2010-08-25 Dispositif de commande de la position d'un élément de blocage dans un système d'ascenseur

Country Status (2)

Country Link
EP (1) EP2609028B1 (fr)
WO (1) WO2012025774A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2914319T3 (es) 2019-07-05 2022-06-09 Otis Elevator Co Ensamblaje de elevador con parada de bloqueo de contrapeso

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH667638A5 (en) * 1985-09-27 1988-10-31 Inventio Ag Safety device for maintenance space under lift cabin - has prop swung outwards under cabin after carrier arm has been positioned
JPH0826617A (ja) * 1994-07-19 1996-01-30 Hitachi Building Syst Eng & Service Co Ltd エレベータの保守運転装置
CA2166841C (fr) * 1995-01-31 2006-08-22 Heinrich Foelix Materiel servant a proteger temporairement un espace de travail
JP4191333B2 (ja) * 1999-08-26 2008-12-03 三菱電機株式会社 エレベーター巻上機
JP2005179015A (ja) * 2003-12-22 2005-07-07 Hitachi Ltd エレベータ装置
EP2070858B1 (fr) * 2006-06-26 2014-10-15 Otis Elevator Company Arrêt rétractable pour maintenir la hauteur libre au-dessus d'une cabine d'ascenseur
JP5173281B2 (ja) * 2007-06-29 2013-04-03 東芝エレベータ株式会社 エレベータ
FI120788B (fi) * 2008-06-30 2010-03-15 Kone Corp Hissijärjestely

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012025774A1 *

Also Published As

Publication number Publication date
EP2609028B1 (fr) 2020-02-26
WO2012025774A1 (fr) 2012-03-01
EP2609028A4 (fr) 2017-09-27

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