EP2014601A1 - Dispositif de freinage d'elevateur pour ascenseur - Google Patents

Dispositif de freinage d'elevateur pour ascenseur Download PDF

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Publication number
EP2014601A1
EP2014601A1 EP06729644A EP06729644A EP2014601A1 EP 2014601 A1 EP2014601 A1 EP 2014601A1 EP 06729644 A EP06729644 A EP 06729644A EP 06729644 A EP06729644 A EP 06729644A EP 2014601 A1 EP2014601 A1 EP 2014601A1
Authority
EP
European Patent Office
Prior art keywords
iron core
moving iron
moving
brake drum
fixed iron
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Withdrawn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
EP06729644A
Other languages
German (de)
English (en)
Inventor
Hideyuki c/o Mitsubishi Electric Corp. MATSUMOTO
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 EP2014601A1 publication Critical patent/EP2014601A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
    • B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes
    • 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
    • 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
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/24—Operating devices
    • B66D5/30—Operating devices electrical

Definitions

  • the present invention relates to a braking device of a traction machine in an elevator system.
  • an electromagnet coil attached to a fixed iron core is energized to attract moving iron cores at the time of brake releasing, by which brake shoes are separated from a brake drum.
  • the electromagnet coil is de-energized, by which the brake shoes moving in association with the moving iron cores are pressed against the brake drum by springs in the fixed iron core to apply the brake (for example, refer to Patent Document 1).
  • an armature which is a moving iron core, is configured so as to be supported on a guide rod by a spherical bearing (for example, refer to Patent Document 2).
  • the moving iron core is elastically supported by spring a bearer fitted under pressure in the fixed iron core. Therefore, when the moving iron core is taken out, the moving iron core is removed from an elastically supporting part, and the worker must support the weight of the moving iron core. As a result, in case where the moving iron core has a large size, workability is decreased in removing the moving iron core.
  • the present invention has been made to solve the above-described problems, and accordingly an object thereof is to provide a braking device of an elevator traction machine where a worker can perform work for removing a moving iron core without worrying about the weight thereof.
  • a braking device of an elevator traction machine comprises: a brake drum formed in a rotationally driving element for moving an elevator up and down; a fixed iron core which is arranged in the center of the brake drum, the fixed iron core is provided with electromagnet coils and attraction surfaces in both side parts; moving iron cores which are arranged so as to face to the attraction surfaces on both sides of the fixed iron core, the moving iron core being urged in the direction toward the brake drum by urging springs, and the moving iron core being attracted to the fixed iron core by the electromagnetic force of the electromagnet coils; and brake shoes (5) which is provided on the moving iron core and is arranged so as to face to the brake drum, characterized in that the braking device further comprises engagement means which are provided on the attraction surface of the fixed iron core and on the moving iron core facing to the attraction surface and are engaged with each other so that the moving iron core can be moved in the direction of the rotation axis of the brake drum while the own weight of the moving iron core is supported by the fixed iron core.
  • the engagement means consist of a concave part provided in the fixed iron core and a convex part provided on the moving iron core and fitted in the concave part.
  • the engagement means consist of key grooves provided in the fixed iron core and the moving iron core so as to face to each other and a key fitted in the key grooves.
  • jig holes for attaching and detaching the moving iron core are provided at positions which are not affected by a magnetic field in the moving iron core.
  • the working load for removing the moving iron core is well decreased.
  • drum-type braking device for an elevator traction machine is explained as an example.
  • Figure 1 is a front view of a braking device of an elevator traction machine in accordance with the first embodiment 11111of the present invention.
  • symbol 1 denotes a brake drum formed in a rotationally driving element (not shown) for moving an elevator up and down
  • symbol 2 denotes a fixed iron core arranged in the center of the brake drum 1.
  • Symbol 2c denotes spring holes concavely provided in the attraction surfaces 2b of the fixed iron core 2
  • symbol 3 denotes urging springs provided in the spring holes 2c
  • symbol 4 denotes a pair of moving iron cores arranged so as to face to the attraction surfaces 2b on both sides of the fixed iron core 2.
  • the moving iron cores 4 are always urged in the direction toward the brake drum 1 by the urging springs 3, and are attracted to the fixed iron core 2 by the electromagnetic force of the paired electromagnet coils 2 at the brake releasing time.
  • Symbol 4a denotes spring bearers that are provided on the paired moving iron cores 4, and fitted under pressure in the spring holes 2c in the fixed iron core 2 to bear the urging springs 4, and symbol 5 denotes a pair of brake shoes that are provided on the paired moving iron cores 4 and arranged so as to face to the brake drum 1.
  • the electromagnet coils 2a are energized to attract the paired moving iron cores 4 to the fixed iron core 2, by which the paired brake shoes 5 are separated from the brake drum 1.
  • the electromagnet coils 2a are de-energized, by which the paired brake shoes 5 moving in association with the paired moving iron cores 4 are pressed against the brake drum 1 by the urging springs 3 in the fixed iron core 2.
  • the paired moving iron cores 4 are elastically supported on the fixed iron core 2 by the spring bearers 4a fitted under pressure in the spring holes 2c in the fixed iron core 2. At the maintenance time, the moving iron cores 4 can be removed by removing the spring bearers 4a and the springs 3 and by moving the moving iron cores 4 to the frond side in the rotation axis direction of the brake drum 1.
  • Symbol 6 denotes a first engagement means consisting of concave parts provided in the attraction surfaces 2b on both sides of the fixed iron core 2
  • symbol 7 denotes a second engagement means consisting of convex parts that are provided on the paired moving iron cores 4 and fitted in the concave parts 6.
  • the second engagement means supports the weights of the paired moving iron cores 2 together with the elastic support of the spring bearers 4a.
  • the concave part 6 and the convex part 7 engage with each other so as to be slidable in the rotation axis direction of the brake drum 1. Thereby, even in the state of not being elastically supported by the spring bearers 4a, the paired moving iron cores 4 can be moved in the direction of the rotation axis of the brake drum 1 while the own weight thereof is supported by the fixed iron core 2.
  • the concave parts 6 are provided on both sides of fixed iron core 2, and convex parts 7 fitted in the concave parts 6 are provided on the paired moving iron cores 4, by which the paired moving iron cores 4 are supported on both sides of the fixed iron core 2 and do not fall freely as in the conventional braking device wherein the moving iron cores 4 are not elastically supported by the spring bearers 4a.
  • the worker can perform the removing work of the spring bearers 4a and the springs without worrying about the weights of the paired moving iron cores 4, and the worker can move and pull out the paired moving iron cores 4 in the direction of the rotation axis of the brake drum 1 along the engagement of the convex parts 7 with the concave parts 6, so that the working load can be reduced significantly. Also, this configuration can accommodate an increase of the size of the moving iron core 4.
  • Figure 2 is a front view of a braking device of an elevator traction machine in accordance with the second embodiment of the present invention.
  • the same symbols are applied to elements that are equivalent to the elements in the first embodiment, and duplicated explanation is omitted.
  • the concave parts 6 and the convex parts 7 that engage with each other can support the weights of the paired moving iron cores 4.
  • an engagement means consisting of two pairs of key grooves 8 each provided so as to face to each other is provided in upper parts of the fixed iron core 2 and the paired moving iron cores 4 so that the weights of the paired moving iron cores 4 can be supported by inserting keys (not shown) in the key grooves 8.
  • Figure 3 is a front view of a braking device of an elevator traction machine in accordance with the third embodiment of the present invention.
  • the same symbols are applied to elements that are equivalent to the elements in the first embodiment, and duplicated explanation is omitted.
  • symbol 9 denotes a magnetic field generated by the paired electromagnet coil 2a provided on the fixed iron core 2, the magnetic field 9 being shown schematically
  • symbol 10 denotes jig holes that are provided in the front surfaces of the paired moving iron cores 4 and arranged at positions that are not affected by the magnetic field 9.
  • the braking device of an elevator traction machine in accordance with the present invention can be used for a braking device that requires the removal of the moving iron cores at the time of maintenance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Braking Arrangements (AREA)
EP06729644A 2006-03-22 2006-03-22 Dispositif de freinage d'elevateur pour ascenseur Withdrawn EP2014601A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/305677 WO2007108112A1 (fr) 2006-03-22 2006-03-22 Dispositif de freinage d'elevateur pour ascenseur

Publications (1)

Publication Number Publication Date
EP2014601A1 true EP2014601A1 (fr) 2009-01-14

Family

ID=38522152

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06729644A Withdrawn EP2014601A1 (fr) 2006-03-22 2006-03-22 Dispositif de freinage d'elevateur pour ascenseur

Country Status (5)

Country Link
EP (1) EP2014601A1 (fr)
JP (1) JPWO2007108112A1 (fr)
KR (1) KR100936096B1 (fr)
CN (1) CN101160256B (fr)
WO (1) WO2007108112A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011004468A1 (fr) * 2009-07-08 2011-01-13 三菱電機株式会社 Dispositif de frein à tambour à action directe pour ascenseur
JP2014159319A (ja) * 2013-02-20 2014-09-04 Hitachi Ltd エレベーター装置及びそのブレーキ装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0186983U (fr) * 1987-11-30 1989-06-08
JPH0286983U (fr) * 1988-12-20 1990-07-10
JPH08208142A (ja) * 1995-01-31 1996-08-13 Hitachi Building Syst Eng & Service Co Ltd 電磁ブレーキ装置のプランジャー脱着工具
JP3635035B2 (ja) * 2001-02-15 2005-03-30 三陽工業株式会社 ブレーキ装置
EP2514988B1 (fr) 2002-10-18 2014-08-27 Mitsubishi Denki Kabushiki Kaisha Mécanisme de frein pour machine à traction
JP4184774B2 (ja) 2002-12-11 2008-11-19 株式会社日立製作所 エレベーター用巻上機
CN2637461Y (zh) * 2003-08-04 2004-09-01 江苏通润机电集团有限公司 一种带双体电磁铁的制动器
CN2641006Y (zh) * 2003-09-15 2004-09-15 江苏通润机电集团有限公司 一种带远程松闸装置的电磁铁制动器
JP4387180B2 (ja) 2003-12-18 2009-12-16 三菱電機株式会社 エレベーター用巻上機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007108112A1 *

Also Published As

Publication number Publication date
KR100936096B1 (ko) 2010-01-11
CN101160256A (zh) 2008-04-09
JPWO2007108112A1 (ja) 2009-07-30
CN101160256B (zh) 2011-01-05
KR20070116119A (ko) 2007-12-06
WO2007108112A1 (fr) 2007-09-27

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