EP1123891A2 - Attache pour extrêmité de câble d'ascenseur - Google Patents

Attache pour extrêmité de câble d'ascenseur Download PDF

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Publication number
EP1123891A2
EP1123891A2 EP01301162A EP01301162A EP1123891A2 EP 1123891 A2 EP1123891 A2 EP 1123891A2 EP 01301162 A EP01301162 A EP 01301162A EP 01301162 A EP01301162 A EP 01301162A EP 1123891 A2 EP1123891 A2 EP 1123891A2
Authority
EP
European Patent Office
Prior art keywords
lever
dead end
tension
end hitch
hitch
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Withdrawn
Application number
EP01301162A
Other languages
German (de)
English (en)
Other versions
EP1123891A3 (fr
Inventor
Boris Traktovenko
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 EP1123891A2 publication Critical patent/EP1123891A2/fr
Publication of EP1123891A3 publication Critical patent/EP1123891A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables

Definitions

  • the present invention relates generally to traction elevator systems and more particularly to dead end hitches for traction elevator systems.
  • Traction elevator systems having 2:1 roping configurations typically include a car and counterweight connected through idler pulleys to multiple tension members with the tension members extending over a traction sheave effectively between the idler pulleys with respect to the rope.
  • the traction sheave is rotationally driven by a machine mounted in a machine room above the hoistway to displace the car and the counterweight in an opposing motion relationship. It is necessary to terminate the ends of the rope to an overhead support structure. This is generally accomplished though the use of termination devices and dead end hitches (to which the termination devices mount).
  • the dead end hitches are in turn supported by the support structure such as the ceiling of the hoistway or a separate support member. While conventional units are safe and reliable, significant overhead clearance is required to mount such conventional dead end hitches. Because building space is at a premium, a device that generally increases the total height required in an elevator hoistway is not desirable. It is desirable to reduce the space required above the top of the elevator car when the car is at its highest location.
  • a dead end elevator hitch assembly is provided herein that reduces the overhead clearance requirements of conventional dead end hitch arrangements.
  • Conventional dead end hitch assemblies generally include a vertical member suspended from a support structure. The termination device is situated beneath the dead end hitch for suspending a load such as an elevator car or counterweight by tension members.
  • a load such as an elevator car or counterweight by tension members.
  • conventional dead end hitch configurations require additional height in the elevator hoistway.
  • a dead end hitch in an elevator system comprising:
  • the dead end hitches embodying the invention described herein substantially reduce the height required in the elevator hoistway by allowing the termination device to be supported at substantially the same height as the dead end hitch.
  • the dead end hitch includes a lever positioned non-vertically, and preferally generally horizontally, and pivotally supported by the support structure. The location and type of pivotal support may be adapted to the particular support configurations.
  • tension equalization springs or other tension member equalization or vibration isolation assemblies
  • the tension equalization spring and any height adjustment mechanisms may be positioned on approximately the same vertical level as the termination device, rather than above the termination device.
  • Traction elevator system 10 generally includes a car 12 and a counterweight 14 which are mounted in an elevator shaft of a building for vertical movement between pre-determined travel limits.
  • a sheave and tension member arrangement for driving car 12 and its counterweight 14 includes a tension member 16 attached at one end to a first dead end hitch 30 extending to the undersides of idler sheaves 18 positioned atop car 12.
  • Tension member 16 extends to a traction sheave 20 generally situated proximate to the top of the hoistway, and further traverses a second idler sheave 22 atop counterweight 14 and extends therefrom to a second dead end hitch 32.
  • Traction sheave 20 is powered by a traction drive machine 24, which may include an AC or DC drive motor, to drive traction sheave 20 causing car 12 and counterweight 14 to become vertically displaced in an opposing motion relationship. It is, of course, contemplated that the configuration of the traction drive components can vary. For example, idler sheaves 18 may be positioned beneath car 12 and idler sheave 22 may be positioned beneath counterweight 14.
  • Both first and second dead end hitches 30 and 32 attach to an overhead support structure 26, which may comprise, for example, a beam or slab resting upon or extending from vertical supports (not shown).
  • the instant invention is concerned generally with minimizing the distance that either or both dead end hitches extend below support structure 26.
  • Figure 2 schematically depicts an existing dead end hitch 40 having a shackle 42 generally disposed through a support structure 26 to maintain the weight of car 12 or counterweight 14 (not shown) suspended by a tension member 48 via an intermediary termination device 46.
  • Support structure 26 may depend from a vertical support or wall 27, or can be, for example, a horizontally configured member traversing a structure.
  • a force arrow F represents the overall force applied to support 26.
  • the moment applied to support 26 can be determined generally from F and the distance L, which represents the distance between vertical support 27 and tension member 48.
  • a tension equalization spring 44 provides bias between shackle 42 and support structure 26.
  • Tension equalization spring 44 is maintained in position by resting atop support structure 26 and is maintained between support structure 26 and the top of shackle 42 by, for example, a blocking portion or collar 43 (in one arrangement) perpendicularly from shackle 42.
  • the overall height of dead hitch 40 is determined by the length of shackle 42, which is generally defined by the height of tension equalization spring 44, the spring stroke and the thickness of support structure 26.
  • FIG. 3 a schematic of a conventional swivel dead end hitch 40 generally known in the art is shown.
  • the swivel feature reduces the bending moment on the termination and the tension member upon occurrence of horizontal pull on tension member 48.
  • a dead end hitch includes shackle 42 pivotally attached at a pivot 38 intermediate to support 26 and vertical support structure 27.
  • Dead end hitch 40 includes a load (not shown) attached by tension member 48 via termination device 46.
  • tension equalization spring 44 is disposed and maintained thereon by a blocking portion or collar 43 protruding perpendicularly (in one arrangement) from shackle 42. Pivot 38 allows the hitch assembly 40 to rotate thereby reducing the bending moment on termination device 46 and tension member 48 when horizontal forces are exerted upon tension member 48 and/or termination device 46.
  • dead end hitches are provided that substantially reduce the height required at the top of an elevator hoistway. This is accomplished by generally by supporting the termination device at substantially the same height as a dead end hitch.
  • the dead end hitch including a lever configured generally non-vertically and a tension equalization device between the non-vertical lever and a structure of the elevator hoistway, is positioned at approximately the same vertical height as the end of the termination device opposite the end terminating the tension member (i.e., the supported end).
  • FIG 4 is a schematic view of a dead end hitch 60 embodying the present invention.
  • the top of an elevator hoistway is generally shown including a lateral support 50 and a vertical member 52.
  • Lateral support 50 is, for example, a ceiling or separate support or structural member capable of holding the weight of dead end hitch 60 and the load (elevator car or counterweight) attached thereto.
  • Lateral support 50 also is integral with, or depends from, vertical member 52 which is, for example, a hoistway wall or side rails.
  • Dead end hitch 60 includes a lever 70 attached to lateral support 50 by hangers 74 at a pivot 72.
  • Pivot 72 is intermediate to a first lever end 61 and a second lever end 62.
  • First lever end 61 is generally proximate to vertical member 52.
  • the materials of construction may vary for dead end hitch 60 (and further dead end hitches detailed herein).
  • lever 70 is formed of bar steel cut to the desired size.
  • pivot 72 can differ. That is, while the embodiment shown in Figure 4 includes pivot 72 located generally centrally upon lever 70, one skilled in the art will appreciate that the precise location of pivot 72 may vary depending on factors including, but not limited to, the positioning of the other components, their weights and other balancing considerations.
  • a termination device 66 having tension member 68 extending therefrom supports a load such as a car or counterweight (not shown).
  • the termination device 66 includes a clevis, or a short shackle having a clevis, at its supported end that is pivotally attached to lever 70 at first lever end 61.
  • termination device 66 may be supported by the pivotal attachment at substantially the same height as lever 70, rather than below a shackle as shown with reference to Figures 2 and 3.
  • a tension equalization device such as a spring 76 is disposed between lever 70 (generally at second end 62) and lateral support 50.
  • Spring 76 compensates for variations on the tension in tension member 68 (particularly when a plurality of tension members 68 are employed) and to provide vibrational isolation from the vibrations of tension member 68.
  • Dead end hitch 80 includes a lever 90 having a first lever end 81 and a second lever end 82.
  • Lever 90 is pivotally attached to support 50 at a pivot 92.
  • Pivot 92 is situated on lever 90 at second lever end 82.
  • Hangers 94 secure pivot 92 to lateral support 50.
  • Termination device 66 is attached to a first lever end 81 of a lever 90 proximate to vertical member 52 generally as described above, thereby supporting termination device 66 at substantially the same height as lever 90.
  • a tension equalization device is positioned between lateral support 50 and lever 90.
  • the tension equalization device includes a spring 96 positioned on an intermediate member 98.
  • Member 98 is generally shaped as a rod and is connected to lateral support 50.
  • Spring 96 is positioned below lever 90 generally intermediate to first lever end 91 and second lever end 82.
  • Spring 96 is maintained on member 98 by a blocking portion or collar 97.
  • Member 98 and collar 97 may be, for example, a monolithic structure.
  • collar 97 may be removable from member 98 (i.e., collar 97 may be a threaded nut).
  • Member 98 may be, for example, a rod positioned through an opening in lever 90.
  • member 98 can be configured to fit around lever 90. It will be appreciated by one skilled in the art that the configuration of the tension equalization device may readily be changed.
  • Force arrows F represent the overall force applied to support 50. Additionally, the moment applied to support 50 is determined generally from F and the distances L between tension member 68 and vertical support 52. The force and moment applied to the support are generally the same as for a conventional design (for example, as shown in Figure 2), while also eliminating the need for a shackle that is subject to horizontal stresses.
  • the distance required for the dead end hitch can be further reduced by placing one or more levers (similar to lever 70 described with respect to Figure 4 and lever 90 described with respect to Figure 5) between a plurality of generally parallel support members.
  • levers similar to lever 70 described with respect to Figure 4 and lever 90 described with respect to Figure 5
  • FIGs 6, 7, 9 and 10 a dead end hitch assembly 100 is depicted.
  • the structural configuration of the hoistway generally includes vertical member 52 having a plurality of lateral supports 50 depending substantially perpendicularly therefrom. Further, a cross-member 54 is located atop lateral supports 50.
  • Dead end hitch 100 includes a lever 110 generally supported by lateral supports 50.
  • Lever 110 is pivotally maintained between lateral supports 50 by a pin 115 disposed through pivot apertures 114 upon lateral supports 50 and lever 110.
  • Termination device 66 having tension member 68 extending therefrom is pivotally supported by lever 110 at first lever end 111.
  • Lever 110 is formed generally of a pair of cut bar steel members bent and secured together (for example, welded together) so that there is an opening or gap between the first lever end 111 and a second lever end 112 to allow a tension equalization device to be positioned between lever 110 and cross-member 54.
  • the tension equalization device includes a rod 118 generally supporting a spring 116.
  • the opening may be accomplished by casting lever 110 or by machining an opening.
  • Rod 118 is secured to cross-member 54 by a securement means such as a nut 122.
  • Spring 116 is disposed upon rod 118 below lever 110 and is maintained thereon by, for example, a protrusion or a collar 120.
  • the height of termination device 66 may also be adjusted by increasing or decreasing the extension length (i.e., the length of rod 118 that extends below lever 110 and that maintains spring 116). For example, by increasing the extension length, termination device 66 is at a lower position as lever 110 is sloped downwardly due to the rotation about pin 115 (see Figure 7, lever 110b in phantom). Conversely, by decreasing the extension length, termination device 66 is at a higher position as lever 110 is sloped upwardly due to the rotation about pin 115 (see Figure 7, lever 110a in phantom).
  • the depicted configuration having rod 118 secured to cross-member 54 is ideal for adjustability, as nut 122 may be rotated to increase or decrease the extension length.
  • a nut or other adjustable device may be positioned under lever 110 upon rod 118, i.e., adjacent to spring 116, to vary the length of rod 118.
  • rod 118 may be welded to cross-member 54, or rod 118 and cross-member 54 may be a monolithic member.
  • the present design provides a large degree of adjustability relative to the overhead height required since much of the vertical space used for lever rotation, which is between lateral supports 50, is otherwise unusable. Furthermore, the horizontal motion upon vertical adjustment if minimal.
  • Figure 8 a diagram representing the range of vertical adjustment is provided.
  • a degree of vertical adjustment equal to 50 mm requires 14 degrees of rotation up and down from the position of lever 110 parallel to lateral support 50.
  • 50 mm of vertical adjustment in the schematic shown only 1.5 mm of lateral motion results. Consequently, in addition to minimizing vertical space required, the design of Figures 6-10 minimizes required lateral space in the hoistway.
  • levers 110 While four lateral supports 50 and three levers 110 are shown in Figures 9 and 10, it is understood that more or less lateral supports 50 may be included thereby changing number of the locations available for levers 110. It is also understood that neighboring lateral supports 50 may or may not have a lever 110 supported therebetween. The positioning of levers 110 is generally complementary to the arrangement of tension member or tension members.
  • a common pin 115 can be used, as shown in Figure 9. That is, a pin 115 may be disposed through a plurality of pivot apertures 114 upon lateral supports 50 and levers 110.
  • the remaining dead end hitch assemblies may be structurally supported by one or more pins 126 disposed through secondary apertures 124 upon lateral supports 50 and lever 110. Thereafter, pin 115 may be removed from apertures 114.

Landscapes

  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
EP01301162A 2000-02-09 2001-02-09 Attache pour extrêmité de câble d'ascenseur Withdrawn EP1123891A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50049600A 2000-02-09 2000-02-09
US500496 2000-02-09

Publications (2)

Publication Number Publication Date
EP1123891A2 true EP1123891A2 (fr) 2001-08-16
EP1123891A3 EP1123891A3 (fr) 2002-05-02

Family

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Family Applications (1)

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EP01301162A Withdrawn EP1123891A3 (fr) 2000-02-09 2001-02-09 Attache pour extrêmité de câble d'ascenseur

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EP (1) EP1123891A3 (fr)
JP (1) JP2001247277A (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1508545A1 (fr) * 2003-08-12 2005-02-23 Inventio Ag Système d'ascenseur avec attache d'extrémité de câble dépendant de la charge
EP1510493A1 (fr) * 2003-08-12 2005-03-02 Inventio Ag Système d'ascenseur avec attache d'extrémité de câble dépendant de la charge
EP1630119A1 (fr) * 2004-08-31 2006-03-01 Inventio Ag Attache de fin de câble pour ascenseur
WO2008110520A1 (fr) * 2007-03-12 2008-09-18 Inventio Ag Ascenseur
EP1992582A1 (fr) * 2006-03-07 2008-11-19 Mitsubishi Electric Corporation Dispositif de suspension pour ascenseur
US7753174B2 (en) 2005-03-12 2010-07-13 Thyssenkrupp Elevator Ag Elevator installation
US20110162915A1 (en) * 2008-08-13 2011-07-07 Kone Corporation Method and arrangement for fixing the compensating ropes of an elevator
US20130048431A1 (en) * 2011-08-31 2013-02-28 Bernhard Grossrieder Elevator with compensating device
WO2017089855A1 (fr) * 2015-11-25 2017-06-01 Otis Elevator Company Structure de montage de machine pour système d'ascenseur
GR20170100463A (el) * 2017-10-09 2019-05-24 Κλεμαν Ελλας-Kleeman Hellas Α.Β.Ε.Ε. Για Μηχανολογικες Κατασκευες Α.Ε. Περιστρεφομενη βαση αναρτησης ή τροχαλιας περεκκλισης συρματοσχοινων σε ανελκυστηρα

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1841958A (en) * 1928-08-14 1932-01-19 Alliance Machine Co Hoist mechanism
DE1108394B (de) * 1956-11-09 1961-06-08 Martin Decker Corp Vorrichtung zum Festhalten und gebremsten Nachlassen eines lasttragenden Seiles
EP0731052A1 (fr) * 1995-03-04 1996-09-11 Dover Europe Aufzüge GmbH Ascenseur

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5029670B1 (fr) * 1970-12-26 1975-09-25
JPS59116361U (ja) * 1983-01-25 1984-08-06 三菱電機株式会社 エレベ−タの秤装置
JPH06316389A (ja) * 1993-05-07 1994-11-15 Toshiba Corp エレベータの緩衝懸架装置
JPH1025071A (ja) * 1996-07-05 1998-01-27 Fuji Denki Seisakusho:Kk 家庭用エレベータの非常検知装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1841958A (en) * 1928-08-14 1932-01-19 Alliance Machine Co Hoist mechanism
DE1108394B (de) * 1956-11-09 1961-06-08 Martin Decker Corp Vorrichtung zum Festhalten und gebremsten Nachlassen eines lasttragenden Seiles
EP0731052A1 (fr) * 1995-03-04 1996-09-11 Dover Europe Aufzüge GmbH Ascenseur

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1508545A1 (fr) * 2003-08-12 2005-02-23 Inventio Ag Système d'ascenseur avec attache d'extrémité de câble dépendant de la charge
EP1510493A1 (fr) * 2003-08-12 2005-03-02 Inventio Ag Système d'ascenseur avec attache d'extrémité de câble dépendant de la charge
CN1304265C (zh) * 2003-08-12 2007-03-14 因温特奥股份公司 具有摆杆装置的电梯设备
EP1630119A1 (fr) * 2004-08-31 2006-03-01 Inventio Ag Attache de fin de câble pour ascenseur
CN100542930C (zh) * 2004-08-31 2009-09-23 因温特奥股份公司 固定缆索的缆索固定点和具有缆索固定点的电梯
US7748503B2 (en) 2004-08-31 2010-07-06 Inventio Ag Cable fixing point for fastening at least one cable and elevator with at least one cable fixing point for at least one cable
US7753174B2 (en) 2005-03-12 2010-07-13 Thyssenkrupp Elevator Ag Elevator installation
EP1992582A4 (fr) * 2006-03-07 2013-03-13 Mitsubishi Electric Corp Dispositif de suspension pour ascenseur
EP1992582A1 (fr) * 2006-03-07 2008-11-19 Mitsubishi Electric Corporation Dispositif de suspension pour ascenseur
CN101641224B (zh) * 2007-03-12 2011-08-17 因温特奥股份公司 电梯及用于松开其上固定点的方法
WO2008110520A1 (fr) * 2007-03-12 2008-09-18 Inventio Ag Ascenseur
US8739937B2 (en) 2007-03-12 2014-06-03 Inventio Ag Elevator damping element
US20110162915A1 (en) * 2008-08-13 2011-07-07 Kone Corporation Method and arrangement for fixing the compensating ropes of an elevator
US8360212B2 (en) * 2008-08-13 2013-01-29 Kone Corporation Method and arrangement for fixing the compensating ropes of an elevator
US20130048431A1 (en) * 2011-08-31 2013-02-28 Bernhard Grossrieder Elevator with compensating device
US9272879B2 (en) * 2011-08-31 2016-03-01 Inventio Ag Elevator with compensating device
WO2017089855A1 (fr) * 2015-11-25 2017-06-01 Otis Elevator Company Structure de montage de machine pour système d'ascenseur
CN108290718A (zh) * 2015-11-25 2018-07-17 奥的斯电梯公司 用于电梯系统的机械安装结构
CN108290718B (zh) * 2015-11-25 2021-05-18 奥的斯电梯公司 用于电梯系统的机械安装结构
US11104549B2 (en) 2015-11-25 2021-08-31 Otis Elevator Company Machine mounting structure for elevator system
GR20170100463A (el) * 2017-10-09 2019-05-24 Κλεμαν Ελλας-Kleeman Hellas Α.Β.Ε.Ε. Για Μηχανολογικες Κατασκευες Α.Ε. Περιστρεφομενη βαση αναρτησης ή τροχαλιας περεκκλισης συρματοσχοινων σε ανελκυστηρα

Also Published As

Publication number Publication date
EP1123891A3 (fr) 2002-05-02
JP2001247277A (ja) 2001-09-11

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