EP1577247A1 - Aufzug - Google Patents

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Publication number
EP1577247A1
EP1577247A1 EP02808321A EP02808321A EP1577247A1 EP 1577247 A1 EP1577247 A1 EP 1577247A1 EP 02808321 A EP02808321 A EP 02808321A EP 02808321 A EP02808321 A EP 02808321A EP 1577247 A1 EP1577247 A1 EP 1577247A1
Authority
EP
European Patent Office
Prior art keywords
car
hoistway
elevator
elevator car
hoisting machine
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Withdrawn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
EP02808321A
Other languages
English (en)
French (fr)
Other versions
EP1577247A4 (de
Inventor
Naoki Mitsubishi Denki K. K. HASHIGUCHI
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP1577247A1 publication Critical patent/EP1577247A1/de
Publication of EP1577247A4 publication Critical patent/EP1577247A4/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/02—Cages, i.e. cars
    • B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
    • B66B11/0246—Maintenance features
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • 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
    • 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

Definitions

  • the present invention relates to an elevator system of which the hoisting machine is provided in an upper part of the hoistway.
  • the dead space would be one of the two following values: the first is a lengthwise space which is provided so that the equipment arranged in the top part of the hoistway do not collide with the elevator car in the event of the car running out of control up to the upper limit ; the other is a lengthwise space which is secured because of the necessity to keep a large space between the elevator car and the equipment arranged in the top part of the hoistway so that the maintenance worker does not hit his or her head on the top of the hoistway or on the equipment arranged in the top part of the hoistway in the case where the elevator car runs out of control.
  • the dead space generated for the whole height of the hoistway is minimized by not arranging the equipment such as the hoisting machine etc. between the elevator car and the hoistway walls in the vertical projection view of the hoistway. Furthermore, the dead space provided for avoiding collision of the equipment arranged in the top part of the hoistway and the elevator car, and for securing safety for the maintenance worker in the case where the elevator runs out of control and ascends to the upper limit, is minimized.
  • this invention has as its object the provision of an elevator system in which the space necessary for the hoistway is minimized.
  • the elevator system in the present invention has a frame body provided in the top part of the hoistway, and on the frame body, a hoisting machine and direction-changing pulleys are fixed.
  • the hoisting machine has a drive sheave which is arranged so that the rotary shaft thereof is almost vertical.
  • the direction-changing pulleys are for changing the direction of the main rope of the elevator which is passed around the drive sheave of the hoisting machine.
  • On the ceiling of the elevator car there is provided an opening which is openable and closable.
  • the hoisting machine or the direction-changing pulleys is arranged so that at least a part thereof overlaps with the elevator car or the counterweight in the vertical projection view.
  • the space between the hoisting machine and the direction-changing pulleys, and the top surface of the elevator car in the state where the elevator car is stopped at the predetermined position for maintenance is defined to be at least (V 2 /2g), which is the value obtained by dividing the square of the rated speed of the elevator car by the double of gravitational acceleration, or more, and is also minimized.
  • a control panel or a governor for controlling the ascent and descent of the elevator car is arranged so that at least a part of the control panel or the governor overlaps with the elevator car in the vertical projection view.
  • the space between the control panel or the governor and the top surface of the elevator car in the state where the elevator car is stopped at the predetermined position for maintenance is defined to be at least (V 2 /2g), which is the value obtained by dividing the square of the rated speed of the elevator car by the double of gravitational acceleration or more, and is also minimized.
  • At least one of the surfaces of the hoisting machine and the control panel that are subject to maintenance is arranged in the vertical downward side.
  • the hoisting machine is formed so that the thickness in the direction of the rotary shaft thereof is smaller than the dimension in the radial direction.
  • an elevator system wherein the space required for the hoistway is minimized by minimizing the dead space generated between the elevator car and the surfaces of the side walls of the hoistway throughout the whole height of the hoistway by arranging to gather the equipments such as the hoisting machine etc. in the top part of the hoistway, and the dead space provided for avoiding collision of the equipments provided in the top part of the hoistway and the elevator car and for securing safety for the maintenance worker.
  • Figure 1 shows an example of an arrangement of an elevator system in accordance with the present invention, and is a plan view of the elevator system viewed from above.
  • Figure 2 is a rear view of the elevator system in Figure 1 viewed from the rear side of the hoistway.
  • a pair of guiderails 3 for an elevator car and another pair of guiderails 4 for a counterweight via rail brackets (not shown) provided on the walls 2 of the hoistway 1.
  • the elevator car 5 ascends and descends through the hoistway 1 being guided by the guiderails 3 for the car, and the counterweight 10 ascends and descends through the hoistway 1 being guided by the guiderails 4 for the counterweight, in the direction opposite to the car 5.
  • an entrance doors 7 In the front side of the elevator car 5, there is provided an entrance doors 7.
  • the surface of the wall facing the entrance doors 7 will be called 'the front side'
  • the surface of the wall opposite to the front side will be called 'the rear side'.
  • both the surfaces of the walls which are orthogonal to the surface of the entrance doors will be called 'the sides'.
  • the bottom surface and the both the side surfaces of the car 5 are supported by a car frame 6 formed from a plurality of beams.
  • an opening 9 for maintenance work which is openable and closable by means of an opening/closing lid 9a, is provided on the top surface 8 of the car 5.
  • the counterweight 10 is provided behind the car 5 in the hoistway 1, and also one of the sides thereof is arranged near the wall 2 of the hoistway 1.
  • a frame body 30 which is supported by guiderails 3 for the car and guiderails 4 for the counterweight are provided.
  • a hoisting machine 13 having a drive sheave 14 around which the elevator main rope 12 is passed is provided.
  • the drive sheave 14 is arranged so that the rotary shaft thereof is almost vertical.
  • the hoisting machine 13 is provided so that at least a part thereof and the car 5 overlap with each other in the hoistway 1 in the vertical projection view.
  • the hoisting machine 13 is arranged at a different corner part of the car 5 at the other side from the corner part where the counterweight 10 is arranged, with, in the vertical projection view of the hoistway 1, the main part thereof overlapping with the car 5, and also partially with the opening 9 of the top surface 8 of the car 5.
  • the hoisting machine 13 is formed so that the thickness in the direction of the rotary shaft thereof is smaller than the dimension in the radial direction.
  • the direction-changing pulleys used in this embodiment indicate the car-side deflector sheave 15, counterweight-side deflector sheave 16, car pulleys 17 and the counterweight pulley 18. Explanation on these direction-changing pulleys will be given successively together with explanation on the roping route of the main rope 12 passed around the drive sheave 14 of the hoisting machine 13.
  • One of the ends of the main rope 12 is passed around the car-side deflector sheave 15; the direction thereof is changed from the horizontal direction to the vertical direction; is passed around the car pulleys 17 provided on both sides of the lower part of the car frame 6 one by one; and again the direction thereof is changed from the horizontal direction to the vertical direction; and is engaged to the frame body 30 in the top part of the hoistway 1.
  • the other end of the main rope 12 is passed around the counterweight-side deflector sheave 16 from the hoisting machine 13; the direction thereof is changed from the horizontal direction to the vertical direction; is passed around the counterweight pulley 18; and is engaged to the frame body 30 in the top part of the hoistway 1.
  • the car-side deflector sheave 15 and the car pulleys 17 are arranged so that at least a part of them overlaps the car 5 in the vertical projection view of the hoistway 1. That is, as the main rope part in the direction from the car-side deflector sheave 15 to the car pulleys 17 and the main rope part in the direction from the car pulleys 17 to the frame body 30 are arranged in a position that is as close as possible to the side of the car 5, a large part of the car-side deflector sheave 15 and the car pulleys 17 overlap with the car 5 in the vertical projection view, and therefore, it is not necessary to keep a long distance between the car 5 and the hoistway walls 2.
  • the car-side deflector sheave 15 is arranged so as to overlap with the opening 9 of the top surface 8 of the car. Also the counterweight-side deflector sheave 16 is arranged to overlap with the counterweight 10 at least partially with the counterweight 10 in the vertical projection view of the hoistway 1, and the counterweight pulley 18 is arranged so as to entirely overlap with the counterweight 10 in the vertical projection view of the hoistway 1. That is, there is no necessity to leave a large space between the counterweight 10 and the elevator car 5.
  • control panel 31 for controlling the ascent and descent of the elevator car 5 is arranged so that at least a part thereof overlaps the car 5 in the vertical projection view of the hoistway 1.
  • the entire control panel 30 is arranged so as to overlap with the car 5, and also with the opening 9 of the top surface 8 of the car in the vertical projection view.
  • the governor 32 is, similarly to the control panel 31, provided on the frame body 30 in the upper part of the hoistway 1, and has a governor rope 33 wound around itself. Also, a governor rope tension sheave 34 for applying tension to the governor rope 33 is provided in the lower part of the hoistway 1. Also the governor 32 is, similarly to the control panel 31, arranged so that at least a part thereof overlaps with the elevator car 5 in the vertical projection view. A part of the governor 32 overlaps with the opening 9 of the top surface 8 of the car. That is, except for the sheave part of the governor 32, equipment are arranged to overlap with the car 5, and there is no necessity to take a useless space between the governor 32 and the car 5 due to the thickness of the governor 32.
  • equipments provided in the top part of the hoistway such as the hoisting machine 13, the car-side deflector sheave 15, the counterweight-side deflector sheave 16, the control panel 31, the governor 32, etc. are arranged gathered on the frame body 30 (in this description, 'equipments provided in the top part of the hoistway' refers to the hoisting machine 12, the car-side deflector sheave 15, the counterweight-side deflector sheave 16, the control panel 31 and the governor 32).
  • the frame body 30 is supported by the car guiderails 3 and the counterweight guiderails 4 is described, however, it can also be supported by the walls 2 of the hoistway 1.
  • Figure 3 is a side view of the elevator system viewed from the side, and is a drawing for explaining the method of maintenance work.
  • the elevator car 5 is stopped at the predetermined maintenance position near the uppermost floor, and the maintenance worker 20 gets on the workbench 21, opens the opening/closing lid 9a of the opening 9 of the upper surface 8 of the car, and does the work of inspecting the equipments provided in the top part of the hoistway.
  • the workbench 21 used here is permanently installed and foldable, and is folded housed in an inside surface of a side wall in the car during normal operation of the elevator.
  • the workbench 21 has a mechanism of adjusting the height thereof in the up and down directions, and the height is adjusted according to the height of the worker 20.
  • the surfaces 22 of the hoisting machine 13 and the control panel 31 which are subject to maintenance is arranged in the vertical downward side.
  • the aim is to make the dead space in the top part of the hoistway 1 as small as possible, there is the necessity to lessen the space between the upper surface 8 of the car and the equipments provided in the top part of the hoistway as much as possible, thus calculation of the distance between the top surface 8 of the car and the equipments provided in the top part of the hoistway is carried out in the manner explained as follows.
  • Figure 4 is a conceptual drawing for explaining the motion of the elevator car, assuming that the elevator car runs out of control
  • Figure 4 (A) is a drawing showing the moment the elevator ascends at the rated speed and the counterweight collides with a buffer
  • Figure 4 (B) is a drawing showing the limit position of the elevator car when further ascended by inertial force after colliding with the buffer.
  • the distance between the top surface 8 of the car 5 and the equipments provided in the top part of the hoistway should be the distance that the car 5 does not collide the equipments provided in the top part of the hoistway, or longer in the event that the car 5 runs out of control.
  • (S) denotes the amount of spring of the car
  • (V) denotes the initial speed (rated speed) of the car
  • (g) denotes gravitational acceleration.
  • the space obtained by the above-described equation is the amount of spring (S) beginning from the position where the counterweight 10 collides the buffer 11, in order to minimize this space, it is preferable to set the maintenance position to where the maintenance worker 20 moves the car 5 for maintenance work a position just before the counterweight 10 comes into contact with the buffer 11. In fact, there is the necessity of providing room between the counterweight 10 and the buffer 11, however, it would be enough to take about 20% of the amount of spring (S) of the car 5 as the room.
  • the space at the maintenance position between the top surface 8 of the car and the equipments provided in the top part of the hoistway will be enough when set at a distance between the amount of spring (S) to the distance which is about 20% more than the amount of spring (S).
  • the amount of spring (S) is about 20 cm, and taking the room into consideration, it would be enough to secure about 20 to 24 cm as the space.
  • the maintenance worker 20 can avoid hitting his or her head on the equipments provided in the top part of the hoistway by not poking his or her head out of the opening 9 of the upper surface 8 of the car, but by setting the height of the workbench 21 at a height that would allow his or her hands to reach the equipments provided in the top part of the hoistway such as the hoisting machine 13, in the event that the car 5 drives out of control.
  • Figure 5 is a drawing for explaining the method of maintenance work for an elevator of a high rated speed.
  • a workbench 21 which is permanently installed in the car 5 is described as an example, however, the workbench 21 does not have to be limited to a permanently installed type, and can also be brought in from outside for maintenance work. Also, in the figure, the maintenance worker 20 is working standing, however, it is obvious that it is also effective to have the maintenance worker 20 work sitting by raising the height of the workbench 21 more.
  • the plan dimension of the hoistway 1 becomes minimum, thus making it possible to minimize the dead space throughout the whole height of the hoistway 1.
  • the equipments provided in the top part of the hoistway overlap with the opening 9 of the top surface 8 of the car in vertical projection view in addition to at least a part of the equipments provided in the top part of the hoistway overlapping the car 5 or the counterweight 10, it becomes easier for the maintenance worker 20 to reach out his or her hands to the subject of maintenance when carrying out maintenance work from inside the car 5, thus improving workability as well.
  • the space between the top part of the hoistway 1 and the top surface 8 of the elevator car 5 is set to be the minimum along with making it able to avoid collision of the elevator car 5 and the equipments provided in the top part of the hoistway when the elevator runs out of control, it is possible to minimize the dead space in the top part of the hoistway 1.
  • the hoisting machine 13 is formed so that its thickness in the direction of the rotary shaft thereof is smaller than the dimension in the radial direction, thus contributing to the shortening of the whole height of the hoistway 1.
  • the elevator car 5 explained in this embodiment is arranged so that it ascends and descends being supported by the car pulleys 17 that are provided in the lower part of the car frame 6, there is no necessity to provide an upper beam on the top surface 8 of the car, thus contributing to the shortening of the whole height of the hoistway 1.
  • the same effects can be attained also in roping arrangements other than the 2:1 roping arrangement, provided that the elevator does not require an upper beam on the top surface 8 of the car, like elevators of the type which suspend the elevator car 5 from both sides thereof.
  • the dead spaces which have heretofore been existing in the hoistway of conventional machineroom elevators can be minimized, thus it is possible to provide an elevator system even more improved in saving space, which is a merit of machineroom-less elevators. Also, it is possible to economize building cost of the building, and to provide an elevator to be installed under strict conditions such as limits to the exterior or the height of the building.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Elevator Control (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
EP02808321A 2002-12-24 2002-12-24 Aufzug Withdrawn EP1577247A4 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2002/013444 WO2004058619A1 (ja) 2002-12-24 2002-12-24 エレベータ装置

Publications (2)

Publication Number Publication Date
EP1577247A1 true EP1577247A1 (de) 2005-09-21
EP1577247A4 EP1577247A4 (de) 2010-12-22

Family

ID=32676937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02808321A Withdrawn EP1577247A4 (de) 2002-12-24 2002-12-24 Aufzug

Country Status (5)

Country Link
EP (1) EP1577247A4 (de)
JP (1) JPWO2004058619A1 (de)
KR (1) KR100633950B1 (de)
CN (1) CN1612837A (de)
WO (1) WO2004058619A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3406556A1 (de) * 2017-05-23 2018-11-28 Otis Elevator Company Aufzugstüröffnungsanzeigesysteme für aufzugskabinen

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019012624A1 (ja) * 2017-07-12 2019-01-17 三菱電機株式会社 エレベータ運行管理装置、エレベータ運行管理方法及びエレベータ運行管理プログラム
DE102018202551A1 (de) * 2018-02-20 2019-08-22 Thyssenkrupp Ag Kollisionsverhinderung zwischen einer Führungseinrichtung und einem Fahrkorb

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0710618A2 (de) * 1994-11-03 1996-05-08 Kone Oy Antriebsscheibenaufzug
WO2002024566A1 (fr) * 2000-09-20 2002-03-28 Mitsubishi Denki Kabushiki Kaisha Dispositif elevateur
US6419052B1 (en) * 1999-05-07 2002-07-16 Inventio Ag Equipment for carrying out operations in an elevator shaft

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0597357A (ja) * 1991-10-04 1993-04-20 Mitsubishi Electric Corp エレベーターかご装置
JP4191331B2 (ja) * 1999-01-08 2008-12-03 三菱電機株式会社 エレベーター装置
JP4493759B2 (ja) * 1999-09-13 2010-06-30 三菱電機株式会社 エレベーター装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0710618A2 (de) * 1994-11-03 1996-05-08 Kone Oy Antriebsscheibenaufzug
US6419052B1 (en) * 1999-05-07 2002-07-16 Inventio Ag Equipment for carrying out operations in an elevator shaft
WO2002024566A1 (fr) * 2000-09-20 2002-03-28 Mitsubishi Denki Kabushiki Kaisha Dispositif elevateur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2004058619A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3406556A1 (de) * 2017-05-23 2018-11-28 Otis Elevator Company Aufzugstüröffnungsanzeigesysteme für aufzugskabinen
US11180344B2 (en) 2017-05-23 2021-11-23 Otis Elevator Company Elevator doorway display systems for elevator cars

Also Published As

Publication number Publication date
KR100633950B1 (ko) 2006-10-13
WO2004058619A1 (ja) 2004-07-15
JPWO2004058619A1 (ja) 2006-04-27
KR20040089665A (ko) 2004-10-21
CN1612837A (zh) 2005-05-04
EP1577247A4 (de) 2010-12-22

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