WO2003085281A1 - Frein a tambour electromagnetique - Google Patents

Frein a tambour electromagnetique Download PDF

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Publication number
WO2003085281A1
WO2003085281A1 PCT/JP2003/004406 JP0304406W WO03085281A1 WO 2003085281 A1 WO2003085281 A1 WO 2003085281A1 JP 0304406 W JP0304406 W JP 0304406W WO 03085281 A1 WO03085281 A1 WO 03085281A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake
armature
field core
drum
brake shoe
Prior art date
Application number
PCT/JP2003/004406
Other languages
English (en)
Japanese (ja)
Inventor
Keizo Takahashi
Norihiko Hirota
Takayoshi Kawamata
Original Assignee
Ogura Clutch Co., Ltd.
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 Ogura Clutch Co., Ltd. filed Critical Ogura Clutch Co., Ltd.
Priority to CN038079526A priority Critical patent/CN1646824B/zh
Priority to AU2003236299A priority patent/AU2003236299A1/en
Priority to KR1020047015855A priority patent/KR100592055B1/ko
Publication of WO2003085281A1 publication Critical patent/WO2003085281A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D59/00—Self-acting brakes, e.g. coming into operation at a predetermined speed
    • F16D59/02—Self-acting brakes, e.g. coming into operation at a predetermined speed spring-loaded and adapted to be released by mechanical, fluid, or electromagnetic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/22—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart, e.g. for drum brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/20—Electric or magnetic using electromagnets
    • F16D2121/22—Electric or magnetic using electromagnets for releasing a normally applied brake

Definitions

  • the present invention relates to a non-excited operation type electromagnetic drum brake which is most suitable for use as a motor brake for a hoisting machine for an elevator or an industrial robot.
  • an eccentric in which an internal gear having a sheave groove formed in an outer peripheral surface is provided on a right side surface of a fixing member.
  • An oscillating speed reducer is provided.
  • a drive motor having a motor coil provided on the fixed member side and a permanent magnet provided on the input shaft side of the speed reducer is disposed on the left side surface of the fixed member.
  • the permanent magnet of the drive motor is provided on the outer peripheral surface of the cylindrical part of the motor rotating body (brake drum) mounted on the input shaft of the reduction gear.
  • an in-spread non-excited electromagnetic drum brake provided with a brake shoe that brakes the inner peripheral surface (braking surface of the brake drum) of the cylindrical portion of the motor rotating body is arranged. Is established.
  • the electromagnetic drum brake is disposed between the disc portion of the bottomed cylindrical case fixed to the fixing member and the disc portion of the motor rotating body, and is a field core supported by the case disc portion. And is interposed between the outer peripheral surface of the field core and the inner peripheral surface of the cylindrical portion of the motor rotating body, is supported by the field core only in the radial direction by the plurality of connecting rods, and is independently supported in the radial direction. It has two arc-shaped armatures arranged 180 degrees apart.
  • the electromagnetic drum brake includes a plurality of control springs that are inserted into the bottomed holes of the field core and press the arc-shaped outer peripheral surface of the armature against the inner peripheral surface of the cylindrical portion of the motor rotating body, and a pressing force of the braking spring.
  • an exciting coil for magnetically attracting the magnetic attraction surface of the armature to the outer peripheral surface (magnetic pole surface) of the field core.
  • the outer peripheral surface of the armature becomes the cylindrical portion of the motor rotating body. Is pressed against the inner peripheral surface of the motor and the motor rotating body is held in a stopped state.
  • the excitation coil of the electromagnetic drum brake is energized, the armature is magnetically attracted to the field core by staking the pressing force of the braking spring, and the armature is separated from the inner peripheral surface of the cylindrical portion of the motor rotating body. I do. As a result, the braking of the motor rotating body is released, and the driving motor can be driven.
  • the electromagnetic drum brake of the elevator hoisting device has an arc-shaped release plate provided on the inner peripheral surface of the field core and connected to the armature by a release rod, and is rotatably supported by the field core.
  • a manual release device provided with a release lever or the like, one end of which can be connected to and released from the release plate, is attached.
  • an electromagnetic drum brake of this type the applicant has proposed an electromagnetic drum brake developed as a motor brake for an industrial mouth pot (Japanese Utility Model Application Laid-Open No. 647-17005, Japanese Utility Model Application 1-82 3 3 7 and Japanese Utility Model Application 1-8 2 3 3 8).
  • the electromagnetic drum brake described in Japanese Utility Model Laid-Open Publication No. 64-17005 discloses a field core having a substantially rectangular shape in plan view having a flat magnetic pole surface, and magnetically attracted to the magnetic pole surface of the field core.
  • a substantially rectangular armature having a flat magnetic attraction surface formed thereon, and a brake lining fixed to the armature and frictionally engaged with a braking surface of a brake drum.
  • the field core and the armature are connected by a leaf spring.
  • the electromagnetic drum brake having such a configuration is arranged at intervals in the circumferential direction of the braking surface of the brake drum.
  • Each electromagnetic drum brake can brake the brake drum by pressing the brake lining against the brake drum by the pressing force of the brake spring in the non-excited state where the excitation coil of the field core is cut off. .
  • the armature in the excited state in which the excitation coil of the field core is energized, the armature is magnetically attracted to the field core against the pressing force of the braking spring, and the brake lining separates from the brake drum. Can be released.
  • arc-shaped armatures are arranged at intervals in the circumferential direction on the outer peripheral surface of a cylindrical field core concentrically arranged with the motor rotating body.
  • Electromagnetic drum brakes were used. In this case, in order to reduce the size and weight of the electromagnetic drum brake and to improve the productivity by simplifying the shape of each part of the electromagnetic drum brake, the electromagnetic It was thought that it would be optimal to arrange the drum brake at intervals in the circumferential direction of the braking surface of the motor rotating body provided as a brake drum.
  • the pressure distribution of the brake lining during braking is generally larger on the side of the brake drum opposite to the rotation direction than on the side of the rotation direction of the brake drum. For this reason, it is known that the rotation direction side of the brake drum of the brake shoe tilts toward the field core side against the pressing force of the braking spring, and the braking force during braking decreases. Therefore, even in a conventional electromagnetic drum brake which is disposed at intervals in the circumferential direction of the braking surface of the brake drum, it is necessary to take measures to suppress a decrease in the braking force during such braking.
  • Another object of the present invention is to provide an electromagnetic drum brake which is arranged at intervals in a circumferential direction of a braking surface of a brake drum and can easily adjust an air gap.
  • an electromagnetic drum brake according to the present invention is an electromagnetic drum brake provided at predetermined intervals in a circumferential direction of a braking surface of a brake drum.
  • An inner pole portion formed substantially at the center in the longitudinal direction, a coil housing portion for the exciting coil formed around the inner pole portion, support portions formed at both ends in the longitudinal direction, and a support portion.
  • a field core that has an outer pole formed between the coil housing and the inner pole and the outer pole both acting as magnetic pole surfaces, and extending from both sides of the brake lining attachment part in the longitudinal direction
  • a brake shoe having a pair of legs, each of which has a pair of legs opposed to the support portion of the field core via the first gap, and which is supported by the field core and is capable of coming into contact with and separating from the braking surface of the brake drum; and
  • Gap Comprising a ⁇ one armature facing through, it is interposed between the supporting portion of the field core and the end face of the leg portion of the brake the shoes, and a plurality of damping spring for pressing the brake shoe foremost braking surface of the brake drum.
  • FIG. 1 is a schematic configuration diagram of an electromagnetic drum brake according to one embodiment of the present invention.
  • FIG. 2 is a plan view of the electromagnetic drum brake shown in FIG.
  • FIG. 3 is a side view showing a part of the electromagnetic drum brake shown in FIG.
  • FIG. 4 is an enlarged view of a main part of FIG.
  • FIG. 5 is a plan view of the field core shown in FIG.
  • FIG. 6 is a side view showing a part of the field core shown in FIG.
  • FIG. 7 is a plan view of a brake shoe main body constituting the brake shoe shown in FIG.
  • FIG. 8 is a sectional view taken along line AA of FIG. Detailed description of the embodiment
  • FIG. 1 shows a state in which two electromagnetic drum brakes are incorporated inside a rotating body (rotating body 19) disclosed in Japanese Patent Application Laid-Open No. 2001-72358. Is shown.
  • the elevator hoist is separated from the electromagnetic drum brake LB on the left side by 180 degrees in the circumferential direction of the cylindrical braking surface 1a of the brake drum 1 (opposed to each other).
  • the right electromagnetic drum brake RB is installed.
  • the field core 3 is disposed coaxially with the brake drum 1 and attached to both sides of a support plate 2 fixed to a fixing member (not shown).
  • the electromagnetic drum brakes LB, RB are different only in that the mounting position of the operation check means 16 described later is reversed left and right. explain.
  • the electromagnetic drum brake LB is composed of a thick plate-shaped field core 3, a brake shoe 1 disposed between the cylindrical braking surface 1 a of the brake drum 1 and the field core 3 and having a handle-shaped brake body 1 6. And a plate-shaped armature 10 arranged in the space created by the blades 6.
  • the field core 3 is manufactured by machining a carbon steel material for machine structure, and has a substantially rectangular shape and a flat shape in plan view as shown in FIGS.
  • the field core 3 has a prismatic inner pole portion 3a formed in the center in the longitudinal direction, and a concave coil housing portion 3b formed around the inner pole portion 3a.
  • the wound exciting coil 3 g (FIG. 3) is fitted into the coil housing portion 3b, and is hardened with insulating resin.
  • the field core 3 includes a support portion 3c narrower than the region of the inner pole portion 3a and the coil housing portion 3b formed at both ends in the longitudinal direction, and a support portion 3c and a coil housing portion 3b. It further has an outer pole portion 3d having the same width as the region of the inner pole portion 3a and the coil housing portion 3b formed therebetween.
  • a pair of bottomed pin holes 3 e and a bottomed spring insertion hole 3 f are formed in each support portion 3 c of the field core 3.
  • a guide pin 4 is implanted in the pin hole 3e, and a braking spring 5 is inserted in the spring insertion hole 3f.
  • the surfaces of the inner pole portion 3a and the outer pole portion 3d facing the armature 10 are formed at the same height as flat magnetic pole surfaces.
  • the portion where the inner pole portion 3a and the outer pole portion 3d face each other in the longitudinal direction forms a groove.
  • a part of the outer pole portion 3 d of the field core 3 has a rubber piece (not shown) for preventing magnetic attraction between the magnetic pole surface of the field core 3 and the magnetic attraction surface of the armature 10. Zu) is stuck You.
  • the brake shoe main body 7 of the brake shoe 16 is formed in a substantially rectangular shape in plan view by forging a carbon steel material for machine structure.
  • the brake shoe body 7 has a mounting portion 7a of a brake lining 8a disposed at a predetermined distance from an inner pole portion 3a and an outer pole portion 3d of the field core 3 at a longitudinal center thereof. It has legs 7b extending substantially from the end of the mounting portion 7a on both sides in the longitudinal direction and having a substantially arc shape in side view. The end face of each leg 7b faces the support 3c of the field core 3 with a first gap (air gap).
  • Each leg 7b is provided with a pair of pin insertion holes 7c and a spring insertion hole 7d which are opened on the end face.
  • a guide pin 4 protruding from the support 3c of the field core 3 is inserted into the pin insertion hole 7c, and protrudes from the support 3c of the field core 3 into the spring insertion hole 7d.
  • the brake spring 5 (Fig. 3) is inserted.
  • a pad 8 is attached to the outside of the mounting portion 7a of the brake shoe body 7 with two ports, and a consumable brake lining 8a is detachably fixed to the pad 8.
  • a bush (not shown) in which a coating layer of a synthetic resin material having a low friction coefficient and good wear resistance is formed on the inner peripheral surface of the metal collar. Press fit.
  • Guide pin 4 is inserted into the bush.
  • the armature accommodating portion 9 between the field core 3 and the breaker body 7 has a substantially rectangular shape in plan view by machining a carbon steel material for machine structure into a rectangular parallelepiped shape.
  • the armature 10 formed in a flat shape is accommodated.
  • the surface of the armature 10 opposing the magnetic pole surface of the field core 3 via the second gap (air gap) acts as a flat magnetic attraction surface.
  • the armature 10 has screw holes 10a at both ends in the longitudinal direction, and the mounting portion 7a of the brake shoe body 7 is also provided coaxially with the screw hole 10a. A pair of screw holes 7e are drilled. By screwing the screw portion of the gap adjusting mechanism 11 into these screw holes 10a and 7e, the plexix 6 and the armature 10 are integrally connected.
  • the dimension of the second gap is about 0.2 mm, which is set smaller than the first gap.
  • the gap adjusting mechanism 11 has an adjusting port 12 having a right-hand threaded portion 12a at one end, a left-handed threaded portion 12b at the other end, and a bolt head-shaped engaging portion 12c at the center, and an adjusting port 1 2 right And a pair of nuts 13 screwed to the left threaded portion 12b. That is, the engaging portion 12c of the adjustment port 12 is formed in a shape in which the port head of the right-hand thread portion 12a and the port head of the left-hand thread portion 12b are integrated.
  • the right screw portion 12a is screwed into the screw hole 7e of the brake shoe body 7, and the left screw portion 12b is screwed into the screw hole 10a of the armature 10.
  • the pair of nuts 13 is screwed back into the engaging portion 12c, and then the engaging portion 12c of the adjusting port 12 is rotated.
  • the electromagnetic drum brakes LB and RB are assembled inside the brake drum 1 and the adjustment port 12 is rotated to adjust the second gap.
  • the size of the second gap is adjusted by tightening one nut 13 to the brake shoe main body 7 and tightening the other nut 13 to the armature 10.
  • the release holding mechanism 14 is passed through a through hole 10b formed in the center of the armature 10 in the longitudinal direction, and is formed at the center of the inner pole 3a of the field core 3. It consists of a release port 14a screwed into the screw hole 3h drilled in the nut, and a nut 14b screwed into the release bolt 14a and having an end face tightened to the armature 10. .
  • the magnetic attraction surface of the armature 10 is held in contact with the magnetic pole surface of the field core 3 by the release holding mechanism 14 until the electromagnetic drum brake LB is incorporated into the brake drum 1.
  • the release holding mechanism 14 is removed after the electromagnetic drum brake LB is assembled in the brake drum 1.
  • the pressing force adjusting mechanism 15 has a pressing port 15 a screwed into a screw hole formed in the armature 10 and a pressing port 15 a screwed into the pressing port 15 a and has an end face fastened to the armature 10.
  • Nut 15b, a bottomed spring hole 3i that is drilled in the inner pole 3a of the field core 3 and the tip of the pressure port 15a is inserted, and inserted into the spring hole 3i
  • a contact plate 15d housed in the spring hole 3i and interposed between the pressing spring 15c and the front end of the pressing port 15a. . Presses configured in this manner
  • the pressure adjusting mechanism 15 finely adjusts the pressing force for pressing the brake lining 7 of the brake shoe 6 against the braking surface 1 a of the brake drum 1.
  • the operation check mechanism 16 of the armature 10 includes a limit switch 16a mounted on the side of the support 3c of the field core 3, and a support 3c. It comprises a switch arm 16b rotatably supported on the side surface of the sensor and a detection plate 16c fixed to the armature 10 so as to be adjustable in position.
  • the detection plate 16c contacts the switch arm 16b, and the switch arm 16b rotates.
  • Limit switch 16 Press the switch a. Therefore, it is possible to confirm that the operation of the limit switch 16a releases the braking of the brake drum 1 by the electromagnetic drum brake LB.
  • the electromagnetic drum brake LB configured as described above, when energization of the excitation coil 3 g is cut off, the brake lining 6 a of the brake shoe 6 is released by the pressing force of the braking spring 5 and the pressing spring 15 c. Press the brake drum 1 against the braking surface 1a to keep the brake drum 1 stopped.
  • the electromagnetic drum brake LB has a magnetic attraction surface of the armature 10 against the pressing force of the braking spring 5 and the pressing spring 15 c when the excitation coil 3 g is energized. Magnetically attracted to the magnetic pole surface. As a result, the brake lining 8a of the brake shoe 6 separates from the braking surface 1a of the brake drum 1, and the braking of the brake drum 1 is released.
  • the field core 3 is provided with a support portion 3c extending outward in the longitudinal direction from the outer pole portion 3d, and is further extended from the mounting portion 7a of the brake main body 7.
  • a leg 7b extending outward in the direction is provided.
  • a braking spring 5 is interposed between the support portion 3 c of the field core 3 and the end surface of the leg 7 b of the brake shoe main body 7. The distance between the braking springs 5 provided on each support portion 3c of the field core 3 is set wider than the longitudinal dimension of the brake lining 8a. Therefore, the inclination of the brake shoe 16 toward the field core 3 during braking of the brake drum 1 is suppressed.
  • the most suitable electromagnetic drum brake used as the motor brake of the elevator hoist has been described.
  • the electromagnetic drum according to the present invention The brake can also be used as a motor brake for cranes, escalators, and industrial pots.
  • the inward expansion type electromagnetic drum brake to which the convex arc-shaped brake lining is attached has been described.
  • the electromagnetic drum brake according to the present invention includes an electromagnetic drum brake for braking an outer peripheral surface of a cylindrical portion of a brake drum and an electromagnetic disk for braking a side surface of a disk-shaped brake disk by changing the shape of a brake lining. Can be used as a brake.
  • the brake 16 having a structure in which the pad 8 of the brake lining 8a is detachably attached to the brake body 1 has been described.
  • the electromagnetic drum brake according to the present invention may incorporate a brake shoe 16 having a structure in which the brake lining 8a is directly attached to the brake shoe body 7.
  • the brake shoe is provided with a pair of legs extending from the mounting portion of the brake lining in the circumferential direction of the brake drum.
  • a braking spring is interposed between the end face of the brake and the field core support to prevent the brake shoe from tilting during braking, thereby reducing braking force during braking, uneven wear of the brake lining, and braking. Generation of squealing noise (noise) can be suppressed.
  • the electromagnetic drum brake of the present invention can be used for a long time as a brake for a hoisting machine for an elevator.
  • the gap adjusting mechanism is constituted by an adjusting port having a right-hand thread portion on one side and a left-hand thread portion on the other side, and a pair of nuts screwed into each thread portion of the adjusting port.
  • the screw part was screwed into the screw hole drilled in the brake shoe and armature and fixed with a nut, so that the brake shoe and armature were connected.
  • the second gap with the pole face can be easily adjusted.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Braking Arrangements (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

La présente invention concerne un frein à tambour électromagnétique comprenant un induit de champ (3) dans lequel sont formées des parties de soutien (3c), des segments de frein (6) dans lesquels sont formées des parties bras (7b), des induits (10) agencés entres les segments de frein (6) et l'induit de champ (3) et reliés aux segments de frein (6), et une pluralité de ressorts de frein (5) installés entre la partie de soutien (3c) de l'induit de champ (3) et les faces terminales des parties bras (7b) des segments de frein (6), les induits (10) étant reliés aux segments de frein (6) au moyen de boulons de pose (12) munis de filetages à droite (12a) formés sur un de leurs côtés et de filetages à gauche (12b) formés sur l'autre de leurs côtés.
PCT/JP2003/004406 2002-04-05 2003-04-07 Frein a tambour electromagnetique WO2003085281A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN038079526A CN1646824B (zh) 2002-04-05 2003-04-07 电磁鼓式制动器
AU2003236299A AU2003236299A1 (en) 2002-04-05 2003-04-07 Electromagnetic drum brake
KR1020047015855A KR100592055B1 (ko) 2002-04-05 2003-04-07 전자기 드럼 브레이크

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002104101A JP3958619B2 (ja) 2002-04-05 2002-04-05 電磁ドラムブレーキ
JP2002-104101 2002-04-05

Publications (1)

Publication Number Publication Date
WO2003085281A1 true WO2003085281A1 (fr) 2003-10-16

Family

ID=28786329

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2003/004406 WO2003085281A1 (fr) 2002-04-05 2003-04-07 Frein a tambour electromagnetique

Country Status (5)

Country Link
JP (1) JP3958619B2 (fr)
KR (1) KR100592055B1 (fr)
CN (1) CN1646824B (fr)
AU (1) AU2003236299A1 (fr)
WO (1) WO2003085281A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100343547C (zh) * 2004-12-24 2007-10-17 上海三菱电梯有限公司 内张式电磁制动器
CN102345693A (zh) * 2011-04-19 2012-02-08 同济大学 一种钢圆弹簧制动闸瓦装置
KR101787226B1 (ko) 2013-04-24 2017-10-18 미쓰비시덴키 가부시키가이샤 브레이크 장치, 그것을 이용한 엘리베이터용 권상기, 및 브레이크 장치의 완충 반력 조정 방법

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KR100825840B1 (ko) * 2005-08-05 2008-04-28 산요 고교 가부시키가이샤 브레이크 장치
CN1916435B (zh) * 2005-08-17 2010-12-08 三阳工业株式会社 制动装置
CN100416127C (zh) * 2006-02-13 2008-09-03 上海三菱电梯有限公司 内张式电磁制动器
CN106369077B (zh) * 2016-11-22 2018-04-20 重庆凸普科技有限公司 一种断电式双t电磁通风鼓刹
CN106321688B (zh) * 2016-11-22 2018-05-04 重庆凸普科技有限公司 一种断电式电磁铁鼓刹
CN106369076B (zh) * 2016-11-22 2018-05-22 重庆凸普科技有限公司 一种通电式电磁铁鼓刹
CN106351986B (zh) * 2016-11-22 2018-04-20 重庆凸普科技有限公司 一种断电式双t电磁铁鼓刹
JP6768589B2 (ja) * 2017-04-21 2020-10-14 小倉クラッチ株式会社 励磁装置および無励磁作動ブレーキ
JP7031039B1 (ja) * 2021-04-20 2022-03-07 三菱電機株式会社 ブレーキ装置及びエレベータ用巻上機
CN113550988B (zh) * 2021-07-21 2022-12-13 宁波小顶科技有限公司 一种鼓式电磁刹车装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5667099A (en) * 1980-06-26 1981-06-05 Tsuzuki Junichi Coupling for concrete segments
JPS63115920A (ja) * 1986-10-31 1988-05-20 Ogura Clutch Co Ltd 電磁ブレ−キ
JPS6417035U (fr) * 1987-07-20 1989-01-27
JP2001123656A (ja) * 1999-10-29 2001-05-08 Kondotec Inc チェーンの弛み取り装置
JP2002317838A (ja) * 2001-04-20 2002-10-31 Mitsubishi Electric Corp 電磁マグネット及びこれを用いた制動装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5667099A (en) * 1980-06-26 1981-06-05 Tsuzuki Junichi Coupling for concrete segments
JPS63115920A (ja) * 1986-10-31 1988-05-20 Ogura Clutch Co Ltd 電磁ブレ−キ
JPS6417035U (fr) * 1987-07-20 1989-01-27
JP2001123656A (ja) * 1999-10-29 2001-05-08 Kondotec Inc チェーンの弛み取り装置
JP2002317838A (ja) * 2001-04-20 2002-10-31 Mitsubishi Electric Corp 電磁マグネット及びこれを用いた制動装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100343547C (zh) * 2004-12-24 2007-10-17 上海三菱电梯有限公司 内张式电磁制动器
CN102345693A (zh) * 2011-04-19 2012-02-08 同济大学 一种钢圆弹簧制动闸瓦装置
KR101787226B1 (ko) 2013-04-24 2017-10-18 미쓰비시덴키 가부시키가이샤 브레이크 장치, 그것을 이용한 엘리베이터용 권상기, 및 브레이크 장치의 완충 반력 조정 방법

Also Published As

Publication number Publication date
CN1646824A (zh) 2005-07-27
KR100592055B1 (ko) 2006-06-22
JP3958619B2 (ja) 2007-08-15
KR20040094911A (ko) 2004-11-10
CN1646824B (zh) 2010-04-28
AU2003236299A1 (en) 2003-10-20
JP2003301876A (ja) 2003-10-24

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