WO2024224447A1 - エレベータ装置 - Google Patents

エレベータ装置 Download PDF

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Publication number
WO2024224447A1
WO2024224447A1 PCT/JP2023/016114 JP2023016114W WO2024224447A1 WO 2024224447 A1 WO2024224447 A1 WO 2024224447A1 JP 2023016114 W JP2023016114 W JP 2023016114W WO 2024224447 A1 WO2024224447 A1 WO 2024224447A1
Authority
WO
WIPO (PCT)
Prior art keywords
suspension body
auxiliary weight
suspension
friction
holder
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.)
Ceased
Application number
PCT/JP2023/016114
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
直人 倉橋
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 Building Solutions Corp
Original Assignee
Mitsubishi Electric Building Solutions 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 Building Solutions Corp filed Critical Mitsubishi Electric Building Solutions Corp
Priority to PCT/JP2023/016114 priority Critical patent/WO2024224447A1/ja
Priority to JP2025516325A priority patent/JPWO2024224447A1/ja
Priority to CN202380097249.6A priority patent/CN120981413A/zh
Publication of WO2024224447A1 publication Critical patent/WO2024224447A1/ja
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • B66B7/10—Arrangements of ropes or cables for equalising rope or cable tension

Definitions

  • This disclosure relates to elevator equipment.
  • a counter position adjustment device is provided between the support frame and the cleat device.
  • the counter position adjustment device is composed of multiple jacks.
  • the counter position adjustment device also displaces the position of the cleat device in the vertical direction (see, for example, Patent Document 1).
  • This disclosure has been made to solve the problems described above, and aims to provide an elevator system that can reduce the gap dimension at the top of the elevator shaft.
  • the elevator system disclosed herein includes a hoist with a drive sheave, a suspension body having a first end and a second end and wound around the drive sheave, a car suspended by the suspension body between the first end and the drive sheave and ascending and descending within the hoistway, a counterweight suspended by the suspension body between the second end and the drive sheave and ascending and descending within the hoistway, and a retaining device provided at the top of the hoistway and using friction to retain a retained portion that is a portion of the suspension body between the counterweight and the second end, the retaining device having a friction retaining body around which the retained portion is wound and an auxiliary weight suspended by the suspension body on the second end side of the friction retaining body.
  • the elevator system disclosed herein allows the gap dimension at the top of the elevator shaft to be reduced.
  • FIG. 1 is a perspective view showing a main part of an elevator apparatus according to a first embodiment.
  • FIG. FIG. 2 is an explanatory diagram showing a schematic diagram of a positional relationship in a height direction of devices included in the elevator apparatus of FIG. 1 .
  • FIG. 11 is an explanatory diagram showing a schematic diagram of the positional relationship in the height direction of devices included in an elevator apparatus according to a second embodiment.
  • 13 is a perspective view showing a modified example of how the suspension body is wound around the friction holder in the first and second embodiments.
  • Fig. 1 is a perspective view showing a main part of an elevator apparatus according to embodiment 1.
  • a machine base 2 is provided at the top of a hoistway 1.
  • a hoisting machine 3 is installed on the machine base 2. That is, the hoisting machine 3 is disposed at the top of the hoistway 1.
  • the elevator apparatus of embodiment 1 is a machine room-less elevator.
  • the hoist 3 has a hoist body 4 and a drive sheave 5.
  • the hoist body 4 has a hoist motor (not shown) and a hoist brake (not shown).
  • the hoist motor rotates the drive sheave 5.
  • the hoist brake keeps the drive sheave 5 stationary.
  • the hoist brake also brakes the rotation of the drive sheave 5.
  • Each suspension body 6 is a rope or belt.
  • the car 7 and counterweight 8 are suspended in the hoistway 1 by multiple suspension bodies 6.
  • the car 7 and counterweight 8 move up and down in the hoistway 1 by rotating the drive sheave 5.
  • the counterweight 8 is located directly below the hoisting machine 3.
  • first guide rails (not shown) and a pair of second guide rails (not shown) are installed.
  • the pair of first guide rails guide the elevator car 7 as it ascends and descends.
  • the pair of second guide rails guide the elevator car 8 as it ascends and descends.
  • the machine base 2 is supported by two or more of the pair of first guide rails and the pair of second guide rails.
  • Each suspension body 6 has a first end 6a and a second end 6b.
  • a cleat device (not shown) is provided at the top of the elevator shaft 1. The first end 6a is connected to the cleat device.
  • the cage 7 is suspended by multiple suspension bodies 6 between the first end 6a and the drive sheave 5.
  • the counterweight 8 is suspended by multiple suspension bodies 6 between the second end 6b and the drive sheave 5.
  • a first car hoisting wheel 9a and a second car hoisting wheel 9b are provided below the car 7.
  • a counterweight hoisting wheel 10 is provided above the counterweight 8.
  • Each suspension body 6 is wound around the first cage hoist 9a, the second cage hoist 9b, the drive sheave 5, and the counterweight hoist 10, in that order, from the first end 6a.
  • the cage 7 and the counterweight 8 are suspended by a 2:1 roping method.
  • a holding device 11 is provided at the top of the elevator shaft 1.
  • the holding device 11 holds the held portion 6c of each suspended body 6 by frictional force.
  • the held portion 6c is a portion between the counterweight 8 and the second end 6b of each suspended body 6.
  • the holding device 11 also has a friction holder 12 and an auxiliary weight 13.
  • the friction holder 12 is supported by the machine base 2.
  • the friction holder 12 is also positioned directly below the hoist 3.
  • the held portion 6c is wound around the friction holder 12 for at least one revolution. In this example, the held portion 6c is wound around the friction holder 12 for one and a half revolutions.
  • the friction holder 12 has a first pulley 12a and a second pulley 12b as multiple pulleys.
  • the first pulley 12a and the second pulley 12b are attached to the machine base 2 so that their respective axes are horizontal and parallel to each other.
  • the first pulley 12a and the second pulley 12b are also arranged at the same position in the vertical direction and spaced apart from each other.
  • the rotation of the first pulley 12a and the rotation of the second pulley 12b are each restricted.
  • Each held portion 6c contacts the first pulley 12a and the second pulley 12b at two points.
  • the auxiliary weight 13 is suspended by the suspension body 6 on the second end 6b side of the friction holder 12. This increases the friction force between the friction holder 12 and the held portion 6c.
  • the auxiliary weight 13 is directly connected to the second end 6b.
  • the held portion 6c is held by the frictional holder 12, the held portion 6c and the auxiliary weight 13 do not move even if the car 7 rises or falls.
  • the auxiliary weight 13 is positioned so that it does not overlap with the car 7 and counterweight 8 when looking at the elevator shaft 1 from directly above.
  • the elevator shaft 1 may be provided with an auxiliary rail (not shown).
  • the auxiliary rail guides the displacement of the auxiliary weight 13 in the vertical direction and regulates the horizontal swing of the auxiliary weight 13.
  • the frictional force between the drive sheave 5 and each suspension body 6 is set so that each suspension body 6 does not slip relative to the drive sheave 5 regardless of the load inside the car 7.
  • the frictional force between the frictional holder 12 and each suspension body 6 is also set so that each suspension body 6 does not slip relative to the frictional holder 12.
  • the frictional force between the frictional retainer 12 and each retained portion 6c is lower than the frictional force between the drive sheave 5 and each suspension body 6.
  • the frictional retaining force of the drive sheave 5 against each suspension body 6 is higher than the frictional retaining force of the retaining device 11 against each suspension body 6.
  • the drive sheave 5, the first pulley 12a, and the second pulley 12b each have a number of grooves.
  • a corresponding suspension body 6 is inserted into each groove.
  • each suspension body 6 When ropes are used as each suspension body 6, a small groove, i.e., an undercut, may be provided on the bottom surface of each groove, or the cross-sectional shape of each groove may be V-shaped. This increases the frictional force between each suspension body 6.
  • FIG. 2 is an explanatory diagram that shows a schematic diagram of the positional relationship in the height direction of the devices included in the elevator system of FIG. 1.
  • FIG. 2 shows the positional relationship when the car 7 is landed on the top floor.
  • the elevator system includes a control panel 14, a control cable 15, a first buffer 16, and a second buffer 17.
  • the control panel 14 is installed inside or outside the hoistway 1.
  • the control panel 14 also controls the operation of the car 7 by controlling the hoisting machine 3.
  • the control cable 15 is connected between the control panel 14 and the car 7.
  • the car 7 is electrically connected to the control panel 14 via the control cable 15.
  • the control cable 15 is suspended from the control panel 14 and the car 7 in the elevator shaft 1.
  • the control cable 15 is flexible.
  • the lower end of the control cable 15 is curved in a U-shape.
  • the first shock absorber 16 and the second shock absorber 17 are installed at the bottom of the hoistway 1.
  • the first shock absorber 16 is disposed directly below the car 7, and absorbs the impact of the car 7 colliding with the bottom of the hoistway 1.
  • the second shock absorber 17 is disposed directly below the counterweight 8, and absorbs the impact of the counterweight 8 colliding with the bottom of the hoistway 1.
  • the lower end of the counterweight 8 faces the upper end of the second shock absorber 17 with a gap between them.
  • the dimension of this gap i.e., the run-by dimension h, is managed through maintenance.
  • the counterweight 8 is raised with no passengers in the car 7, and the tension acting on the suspension body 6 by the counterweight 8 is reduced. This increases the imbalance in the tension acting on both sides of the friction holder 12, and when the tension imbalance exceeds the friction holding force of the friction holder 12, each suspension body 6 begins to slide toward the auxiliary weight 13 relative to the friction holder 12.
  • the frictional holding force of the drive sheave 5 is greater than the frictional holding force of the frictional holder 12, so there is no slippage of the suspension body 6 relative to the drive sheave 5.
  • the suspension body 6 is slid against the friction holder 12 until the run-by dimension h reaches the set value, and then the lifting of the counterweight 8 is released. This moves the position of the counterweight 8 higher than the position before adjustment, and the run-by dimension h is adjusted to the set value.
  • each suspension body 6 does not easily slip against the friction holder 12, a force pulling down the auxiliary weight 13 may be applied to the auxiliary weight 13 or each suspension body 6.
  • the held portion 6c is held by the frictional force between the frictional holder 12 and the held portion 6c.
  • the held portion 6c is also wrapped around the frictional holder 12.
  • the auxiliary weight 13 is suspended by the suspension body 6 on the second end 6b side of the frictional holder 12.
  • the frictional holding force of the holding device 11 can be easily adjusted by changing the weight of the auxiliary weight 13.
  • the frictional force between the frictional holder 12 and the held portion 6c can be increased, making it possible to reduce the size and weight of the auxiliary weight 13.
  • each suspension body 6 can be easily slid relative to the frictional holder 12, making it even easier to adjust the run-by dimension h.
  • the friction holder 12 also has a first pulley 12a and a second pulley 12b. This allows the friction holder 12 to be constructed using existing pulleys. The contact area between the friction holder 12 and each suspension body 6 can also be easily increased. The shape of each groove in the first pulley 12a and the second pulley 12b also allows the friction force between the friction holder 12 and each held portion 6c to be easily increased.
  • the auxiliary weight 13 is connected to the second end 6b and is suspended using a 1:1 roping method. This allows the auxiliary weight 13 to be made smaller and lighter.
  • the friction holder 12 is supported by the machine base 2. Therefore, the friction holder 12 can be attached to the machine base 2, which is the elevator equipment, in advance, making installation work easy. Also, space in the elevator shaft 1 can be saved.
  • FIG. 3 is an explanatory diagram that shows a schematic diagram of the positional relationship in the height direction of devices included in an elevator apparatus according to the second embodiment.
  • control panel 14 is suspended by the suspension body 6 on the second end 6b side of the friction holder 12.
  • control panel 14 is directly connected to the second end 6b.
  • the middle part of the control cable 15 is fixed inside the elevator shaft 1 by a first fixture 18 and a second fixture 19.
  • the first fixture 18 is disposed directly below the control panel 14.
  • the second fixture 19 is disposed at a position shifted horizontally from directly below the control panel 14.
  • the entire control panel 14 and the portion of the control cable 15 from the control panel 14 to the first fixing device 18 also serve as an auxiliary weight.
  • tension is applied to the multiple suspension bodies 6 by the control panel 14 and a portion of the control cable 15.
  • control panel 14 and part of the control cable 15 also serve as an auxiliary weight, the holding device 11 can be constructed using a small amount of material. In addition, an increase in the number of parts can be suppressed.
  • only one of the control panel 14 and a portion of the control cable 15 may also serve as an auxiliary weight.
  • control panel 14 when only the control panel 14 serves as the auxiliary weight, the control panel 14 may serve as only a part of the auxiliary weight, and an additional auxiliary weight may be added to the control panel 14. In other words, it is sufficient that the control panel 14 serves as at least a part of the auxiliary weight.
  • control cable 15 when only a portion of the control cable 15 doubles as an auxiliary weight, the control cable 15 may double as only a portion of the auxiliary weight, and an additional auxiliary weight may be added to the control cable 15. In other words, it is sufficient that the control cable 15 doubles as at least a portion of the auxiliary weight.
  • the method of winding the suspension body 6 around the friction holder 12 is not limited to the winding method shown in FIG. 1.
  • the suspension body 6 may be wound in a manner that crosses the suspension body 6 when viewed from the front, that is, in a manner that forms a figure eight, as shown in FIG. 4. This increases the contact area of the suspension body 6 with the friction holder 12, and makes it easy to increase the frictional force.
  • the restriction on the rotation of the first pulley 12a and the second pulley 12b may be released.
  • the restriction on the rotation of the first pulley 12a and the second pulley 12b is released, so that each suspension body 6 can be moved more easily relative to the friction holder 12.
  • the friction holder 12 may be supported by another support member, such as a building beam, instead of the machine base 2.
  • the counterweight 8 is disposed directly below the hoist 3, but the position of the counterweight 8 does not have to be directly below the hoist 3.
  • the hanging method of the auxiliary weight 13 in embodiment 1 and the hanging method of the auxiliary weight in embodiment 2 do not necessarily have to be a 1:1 roping method, and may be, for example, a 2:1 roping method.

Landscapes

  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
PCT/JP2023/016114 2023-04-24 2023-04-24 エレベータ装置 Ceased WO2024224447A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2023/016114 WO2024224447A1 (ja) 2023-04-24 2023-04-24 エレベータ装置
JP2025516325A JPWO2024224447A1 (https=) 2023-04-24 2023-04-24
CN202380097249.6A CN120981413A (zh) 2023-04-24 2023-04-24 电梯装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2023/016114 WO2024224447A1 (ja) 2023-04-24 2023-04-24 エレベータ装置

Publications (1)

Publication Number Publication Date
WO2024224447A1 true WO2024224447A1 (ja) 2024-10-31

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ID=93255996

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/016114 Ceased WO2024224447A1 (ja) 2023-04-24 2023-04-24 エレベータ装置

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JP (1) JPWO2024224447A1 (https=)
CN (1) CN120981413A (https=)
WO (1) WO2024224447A1 (https=)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003008318A1 (en) * 2001-07-11 2003-01-30 Mitsubishi Denki Kabushiki Kaisha Elevator device
JP2008056468A (ja) * 2006-09-01 2008-03-13 Mitsubishi Electric Corp エレベータ装置
EP3072843A1 (en) * 2014-03-26 2016-09-28 Kone Corporation A method and apparatus for automatic elevator drive configuration
CN208631876U (zh) * 2018-07-13 2019-03-22 常熟市通润电梯厂有限公司 一种家用电梯曳引下置后对重装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003008318A1 (en) * 2001-07-11 2003-01-30 Mitsubishi Denki Kabushiki Kaisha Elevator device
JP2008056468A (ja) * 2006-09-01 2008-03-13 Mitsubishi Electric Corp エレベータ装置
EP3072843A1 (en) * 2014-03-26 2016-09-28 Kone Corporation A method and apparatus for automatic elevator drive configuration
CN208631876U (zh) * 2018-07-13 2019-03-22 常熟市通润电梯厂有限公司 一种家用电梯曳引下置后对重装置

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JPWO2024224447A1 (https=) 2024-10-31
CN120981413A (zh) 2025-11-18

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