WO2018207347A1 - Frein de treuil d'ascenseur et treuil d'ascenseur - Google Patents

Frein de treuil d'ascenseur et treuil d'ascenseur Download PDF

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Publication number
WO2018207347A1
WO2018207347A1 PCT/JP2017/018028 JP2017018028W WO2018207347A1 WO 2018207347 A1 WO2018207347 A1 WO 2018207347A1 JP 2017018028 W JP2017018028 W JP 2017018028W WO 2018207347 A1 WO2018207347 A1 WO 2018207347A1
Authority
WO
WIPO (PCT)
Prior art keywords
recess
iron core
brake
movable iron
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.)
Ceased
Application number
PCT/JP2017/018028
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English (en)
Japanese (ja)
Inventor
佳典 谷
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
Priority to PCT/JP2017/018028 priority Critical patent/WO2018207347A1/fr
Publication of WO2018207347A1 publication Critical patent/WO2018207347A1/fr
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
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave

Definitions

  • the present invention relates to an elevator hoisting machine brake in which a brake shoe is mounted on a movable iron core, and an elevator hoisting machine using the same.
  • a guide pin is provided between the fixed iron core and the movable iron core.
  • the movable iron core is guided by the guide pins and moves in a direction in which the movable iron core contacts or leaves the fixed iron core (see, for example, Patent Document 1).
  • the present invention has been made to solve the above-described problems, and an object thereof is to obtain an elevator hoist brake and an elevator hoist capable of reducing the number of parts and simplifying the configuration.
  • the elevator hoisting machine brake includes an electromagnetic magnet having a first concave portion, a second movable portion that is movable in a direction in contact with and away from the electromagnetic magnet, and that faces the first concave portion.
  • the movable iron core attracted by the electromagnetic magnet, the brake shoe supported by the movable iron core, and the first concave portion are housed in the first concave portion.
  • the movable iron core is separated from the electromagnetic magnet and the brake shoe is used as a braking surface.
  • the spring receiver serves as both the guide member and the torque transmission member, the number of parts can be reduced and the configuration can be simplified.
  • FIG. 1 is a schematic configuration diagram showing an elevator according to Embodiment 1 of the present invention, and shows a machine room-less elevator.
  • a car 1 and a counterweight 2 are provided in the hoistway.
  • the car 1 and the counterweight 2 are suspended in the hoistway by the suspension body 3.
  • An elevator hoist 4, a first leashing device 5, and a second leashing device 6 are provided in the upper part of the hoistway.
  • the elevator hoisting machine 4 has a drive sheave 13.
  • the suspension body 3 is wound around the drive sheave 13.
  • the car 1 and the counterweight 2 move up and down in the hoistway by rotating the drive sheave 13.
  • the suspension body 3 has a first end and a second end. The first end is connected to the first leashing device 5. The second end is connected to the second leashing device 6.
  • a first car suspension car 7a and a second car suspension car 7b are provided in the lower part of the car 1.
  • a counterweight suspension vehicle 8 is provided on the upper part of the counterweight 2.
  • the suspension body 3 is wound around a first car suspension car 7a, a second car suspension car 7b, a drive sheave 13, and a counterweight suspension car 8 in order from the first end side. That is, the car 1 and the counterweight 2 are suspended by a 2: 1 roping method.
  • the main shaft 11 is fixed horizontally to the housing 16.
  • the hoist motor 14 rotates the brake drum 12 and the drive sheave 13 integrally around the main shaft 11.
  • the outer diameter of the brake drum 12 is larger than the outer diameter of the drive sheave 13 and the outer diameter of the hoisting machine motor 14.
  • the pair of hoisting machine brakes 15 are arranged on the radially outer side of the brake drum 12 and brake the rotation of the brake drum 12 and the drive sheave 13.
  • the pair of hoisting machine brakes 15 are respectively arranged obliquely downward on the left and right with respect to the main shaft 11 and the brake drum 12 when the elevator hoisting machine 4 is viewed along the axis of the main shaft 11. Therefore, each hoisting machine brake 15 applies a braking force obliquely upward toward the main shaft 11 with respect to the outer peripheral surface of the brake drum 12, that is, the braking surface 12 a during the braking operation.
  • the hoisting machine brake 15 is arranged not only in the range of the brake drum 12 but also in the range of the drive sheave 13 and the hoisting machine motor 14 in the axial direction of the main shaft 11.
  • Each hoisting machine brake 15 can be rotated around the axial bolt 17 between the normal position and the maintenance position by removing the fixing bolt 18.
  • the maintenance position is a position farther from the braking surface 12a than the normal position.
  • Each hoisting machine brake 15 is held in a normal position by tightening the fixing bolt 18 into the housing 16.
  • the electromagnetic magnet 21 has a field outer pole 31, a coil 32 disposed inside the field outer pole 31, and a field inner pole 33 disposed inside the coil 32.
  • the field outer pole 31 is provided with a groove 31a.
  • An inner pole fitting portion 31b is provided on the bottom surface of the groove 31a.
  • the coil 32 is inserted in the groove 31a.
  • the field inner pole 33 is fitted in the inner pole fitting portion 31b.
  • the field inner pole 33 is fixed to the field outer pole 31 by a pair of coupling bolts 34.
  • the coil 32 is held between the field outer pole 31 and the field inner pole 33.
  • the field outer pole 31 is provided with a first bolt penetration portion 31c and a second bolt penetration portion 31d.
  • the axial bolt 17 is passed through the first bolt penetration portion 31c.
  • the fixing bolt 18 is passed through the second bolt penetration part 31d.
  • a pair of first recesses 33a is provided on the surface of the field inner pole 33 on the movable iron core 22 side.
  • a through hole 21 a is provided in the center of the electromagnetic magnet 21. The through hole 21 a passes through the field outer pole 31 and the field inner pole 33 continuously.
  • the movable iron core 22 is a rectangular flat plate. Further, the movable iron core 22 is movable in a direction in contact with or away from the electromagnetic magnet 21. Further, the movable iron core 22 is attracted to the electromagnetic magnet 21 by exciting the electromagnetic magnet 21. Furthermore, the movable iron core 22 has a pair of second recesses 22a facing the first recess 33a.
  • the movable iron core 22 is provided with a pair of torque adjustment screw holes 22b, a maintenance screw hole 22c, and a third recess 22d.
  • Each torque adjustment screw hole 22b penetrates the movable iron core 22 in the thickness direction.
  • each torque adjustment screw hole 22b is opened in the bottom face of the corresponding 2nd recessed part 22a.
  • the maintenance screw hole 22c is connected to the through hole 21a.
  • the diameter of the maintenance screw hole 22c is smaller than the diameter of the through hole 21a.
  • 3rd recessed part 22d is provided in the surface opposite to the electromagnetic magnet 21 of the movable iron core 22, ie, the surface facing the braking surface 12a.
  • the maintenance screw hole 22c opens in the bottom surface of the third recess 22d.
  • the brake shoe 23 is supported by the movable iron core 22. Further, the brake shoe 23 can move between the braking position and the release position by the movement of the movable iron core 22.
  • the braking position is a position where the brake shoe 23 comes into contact with the braking surface 12a.
  • the release position is a position where the brake shoe 23 is separated from the braking surface 12a and faces the braking surface 12a.
  • the brake shoe 23 has a shoe main body 35 and a lining 36.
  • the shoe main body 35 has a cylindrical fixing portion 35a.
  • the fixing portion 35a is press-fitted into the third recess 22d.
  • the brake shoe 23 is fixed to the movable iron core 22 without using a fastener such as a bolt. Torque received by the brake shoe 23 during braking is directly transmitted to the movable iron core 22.
  • an escape hole 35b is provided in the center of the shoe main body 35.
  • the escape hole 35b is connected to the maintenance screw hole 22c.
  • the diameter of the relief hole 35b is larger than the diameter of the maintenance screw hole 22c.
  • the lining 36 contacts the braking surface 12a when the brake shoe 23 is in the braking position. Further, the lining 36 faces the braking surface 12a through a gap when the brake shoe 23 is in the release position.
  • Each brake spring 24 is accommodated in the corresponding first recess 33a.
  • the braking spring 24 separates the movable iron core 22 from the electromagnetic magnet 21 and presses the brake shoe 23 against the braking surface 12a. Thereby, the rotation of the brake drum 12 is braked or the stationary state of the brake drum 12 is maintained.
  • a coil spring is used as each brake spring 24.
  • Each spring receiver 25 is inserted into the corresponding second recess 22 a and receives the spring force of the corresponding brake spring 24.
  • a corresponding torque adjusting bolt 37 is screwed into each torque adjusting screw hole 22b. The tip of each torque adjustment bolt 37 is in contact with the corresponding spring receiver 25.
  • the shape of the spring receiver 25 of the first embodiment is a cylindrical shape whose axial dimension is smaller than the radial dimension.
  • the spring receiver 25 protrudes from the movable iron core 22 toward the electromagnetic magnet 21 and is inserted into the first recess 33a. That is, the dimension of the spring receiver 25 in the moving direction of the movable iron core 22 is larger than the depth dimension of the second recess 22a.
  • the insertion depth of each spring receiver 25 into the first recess 33a changes as the brake spring 24 expands and contracts.
  • the spring receiver 25 serves as a guide member that guides the movement of the movable iron core 22 and a torque transmission member that transmits torque acting on the brake shoe 23 during braking from the movable iron core 22 to the electromagnetic magnet 21. Yes.
  • a ring-shaped groove is provided on the outer peripheral surface of each spring receiver 25.
  • a spring receiving O-ring 38 is fitted in the ring-shaped groove. The spring receiving O-ring 38 moves in the axial direction of the braking spring 24 while sliding along the inner peripheral surface of the first recess 33 a as the braking spring 24 expands and contracts.
  • a gap 39 is provided over the entire periphery.
  • the gap 39 is drawn with emphasis in FIG. 5, the dimension of the gap 39 is actually about 0.1 mm, for example.
  • a pair of pins 40 are attached to the movable iron core 22.
  • the shoe body 35 is provided with a pin hole (not shown) into which the pin 40 is inserted.
  • the brake shoe 23 is positioned with respect to the circumferential direction of the third recess 22d, and the rotation of the brake shoe 23 in the third recess 22d is prevented.
  • the electromagnetic magnet 21 When the car 1 is traveling, the electromagnetic magnet 21 is excited, and the movable iron core 22 is attracted to the electromagnetic magnet 21 against the braking spring 24. Thereby, the brake shoe 23 is displaced to the release position. When the brake shoe 23 is in the release position, the lining 36 is separated from the braking surface 12a.
  • a maintenance bolt (not shown) is inserted into the through hole 21a, and the tip of the maintenance bolt is screwed into the maintenance screw hole 22c, thereby fixing the brake shoe 23 at the release position.
  • the fixing bolt 18 is removed from the housing 16. Then, the hoisting machine brake 15 is rotated to the maintenance position. In this state, the worn state of the lining 36 is confirmed, or the brake shoe 23 is replaced. After the maintenance work, the hoisting machine brake 15 is returned to the normal position, and the hoisting machine brake 15 is fixed to the housing 16 by the fixing bolt 18. Then, the maintenance bolt is removed from the hoisting machine brake 15.
  • the brake shoe 23 is fixed to the movable iron core 22, the spherical seat can be omitted to further simplify the configuration.
  • the brake shoe 23 is press-fitted into the third recess 22d, the number of parts can be further reduced.
  • the lining 36 is made to follow the braking surface 12a during braking while omitting the spherical seat. be able to. That is, the lining 36 can be applied to the braking surface 12a at an appropriate angle, and uneven wear of the lining 36 and generation of noise during braking can be prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Braking Arrangements (AREA)

Abstract

Dans un frein de treuil d'ascenseur selon la présente invention, un aimant électromagnétique a un premier évidement. Un noyau de fer mobile comporte un second évidement faisant face au premier évidement. Un segment de frein est supporté par le noyau de fer mobile. Un ressort de frein est logé dans le premier évidement. Un récepteur de ressort qui reçoit la force de ressort du ressort de frein est inséré dans le second évidement. Le récepteur de ressort fait saillie à partir du noyau de fer mobile et est inséré dans le premier évidement. Avec cette configuration, le récepteur de ressort sert à la fois d'élément de guidage qui guide le mouvement du noyau de fer mobile et d'élément de transmission de couple qui transmet, du noyau de fer mobile à l'aimant électromagnétique, le couple agissant sur le segment de frein lorsque le frein est appliqué.
PCT/JP2017/018028 2017-05-12 2017-05-12 Frein de treuil d'ascenseur et treuil d'ascenseur Ceased WO2018207347A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/018028 WO2018207347A1 (fr) 2017-05-12 2017-05-12 Frein de treuil d'ascenseur et treuil d'ascenseur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/018028 WO2018207347A1 (fr) 2017-05-12 2017-05-12 Frein de treuil d'ascenseur et treuil d'ascenseur

Publications (1)

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WO2018207347A1 true WO2018207347A1 (fr) 2018-11-15

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PCT/JP2017/018028 Ceased WO2018207347A1 (fr) 2017-05-12 2017-05-12 Frein de treuil d'ascenseur et treuil d'ascenseur

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WO (1) WO2018207347A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020183643A1 (fr) * 2019-03-13 2020-09-17 三菱電機株式会社 Frein de machine de levage d'ascenseur et machine de levage
CN115030973A (zh) * 2021-03-08 2022-09-09 三菱电机株式会社 电磁铁、电磁制动器以及电梯曳引机
JPWO2023233592A1 (fr) * 2022-06-01 2023-12-07

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0234837U (fr) * 1988-08-30 1990-03-06
JPH02265891A (ja) * 1989-04-05 1990-10-30 Mitsubishi Electric Corp エレベータのブレーキ装置
JP2011201694A (ja) * 2010-03-26 2011-10-13 Mitsubishi Electric Corp エレベータのブレーキ装置
EP2810911A1 (fr) * 2013-06-05 2014-12-10 Kone Corporation Machine d'entraînement pour ascenseur et ascenseur
JP2015055259A (ja) * 2013-09-10 2015-03-23 株式会社日立製作所 ブレーキ装置及びこのブレーキ装置を用いたエレベータ装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0234837U (fr) * 1988-08-30 1990-03-06
JPH02265891A (ja) * 1989-04-05 1990-10-30 Mitsubishi Electric Corp エレベータのブレーキ装置
JP2011201694A (ja) * 2010-03-26 2011-10-13 Mitsubishi Electric Corp エレベータのブレーキ装置
EP2810911A1 (fr) * 2013-06-05 2014-12-10 Kone Corporation Machine d'entraînement pour ascenseur et ascenseur
JP2015055259A (ja) * 2013-09-10 2015-03-23 株式会社日立製作所 ブレーキ装置及びこのブレーキ装置を用いたエレベータ装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020183643A1 (fr) * 2019-03-13 2020-09-17 三菱電機株式会社 Frein de machine de levage d'ascenseur et machine de levage
CN115030973A (zh) * 2021-03-08 2022-09-09 三菱电机株式会社 电磁铁、电磁制动器以及电梯曳引机
CN115030973B (zh) * 2021-03-08 2024-02-09 三菱电机株式会社 电磁铁、电磁制动器以及电梯曳引机
JPWO2023233592A1 (fr) * 2022-06-01 2023-12-07
WO2023233592A1 (fr) * 2022-06-01 2023-12-07 三菱電機株式会社 Dispositif d'ascenseur
JP7763338B2 (ja) 2022-06-01 2025-10-31 三菱電機株式会社 エレベータ装置

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