WO2021095158A1 - 電磁ブレーキ - Google Patents

電磁ブレーキ Download PDF

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Publication number
WO2021095158A1
WO2021095158A1 PCT/JP2019/044520 JP2019044520W WO2021095158A1 WO 2021095158 A1 WO2021095158 A1 WO 2021095158A1 JP 2019044520 W JP2019044520 W JP 2019044520W WO 2021095158 A1 WO2021095158 A1 WO 2021095158A1
Authority
WO
WIPO (PCT)
Prior art keywords
armature
guide pin
electromagnetic brake
field
electromagnetic
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/JP2019/044520
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
岡本　健
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/JP2019/044520 priority Critical patent/WO2021095158A1/ja
Priority to CN201980101977.3A priority patent/CN114630971B/zh
Priority to JP2021555690A priority patent/JP7217815B2/ja
Publication of WO2021095158A1 publication Critical patent/WO2021095158A1/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
    • 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
    • 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
    • F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • F16D49/16—Brakes with two brake-blocks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes

Definitions

  • the present invention relates to, for example, an electromagnetic brake used in an elevator hoist.
  • An electromagnetic brake is an example of a brake that is a braking device.
  • the electromagnetic brake consists of an armature that is a movable part, a field that is a fixed part, an electromagnetic coil for sucking or braking the armature, and a spring that presses a braking surface against the armature.
  • the electromagnetic coil is provided in the field, and the field is composed of an inner pole portion surrounded by the electromagnetic coil and an outer pole portion outside the coil.
  • Patent Document 1 a structure in which the field faces the armature is known (for example, Patent Document 1).
  • the electromagnetic brake with the above configuration has a guide pin on the outer pole that guides the movement of the armature. Since this guide pin also has a function of receiving torque generated on the braking surface of the electromagnetic brake, strength is required. Therefore, it is necessary to prepare a guide pin having a size corresponding to the strength required to receive the torque. However, when such a guide pin exists, it is necessary to widen the width of the outer pole portion according to the size of the guide pin in order to secure the magnetic path cross-sectional area. Further, even when the guide pin is arranged in the inner pole portion, it is necessary to widen the width of the inner pole portion according to the size of the guide pin. Therefore, there is a problem that it is difficult to miniaturize the electromagnetic brake.
  • the present invention has been made to solve such a problem, and an object of the present invention is to obtain a miniaturized electromagnetic brake by simplifying the arrangement of components of the electromagnetic brake.
  • the electromagnetic brake according to the present invention includes an armature in which an electromagnetic coil, a shoe in contact with and detached from a braking surface are attached to one surface, and the other surface of the armature.
  • a guide pin formed on either the field or the armature to guide the reciprocating movement of the armature, and a guide pin arranged on the guide pin, in a direction in which the armature is separated from the field when the electromagnetic coil is not energized. It is equipped with an elastic member that can be moved to.
  • the present invention it is possible to reduce the size of the electromagnetic brake while ensuring the magnetic path cross-sectional area by simplifying the arrangement of the components of the electromagnetic brake. Further, since the hole for the guide pin and the hole for the spring can be shared, it is possible to reduce the processing cost in the electromagnetic brake.
  • FIG. It is sectional drawing of the electromagnetic brake of Embodiment 1.
  • FIG. It is sectional drawing which shows the time of braking of the electromagnetic brake of Embodiment 1.
  • FIG. It is a front view of the field of the electromagnetic brake of Embodiment 1.
  • FIG. It is sectional drawing of the hoisting machine of the elevator provided with the electromagnetic brake of Embodiment 1.
  • FIG. It is sectional drawing of the electromagnetic brake of Embodiment 2.
  • FIG. It is a front view of the field of the electromagnetic brake of Embodiment 2.
  • FIG. It is a front view of the field of the electromagnetic brake of Embodiment 3.
  • FIG. It is a front view of the field of the electromagnetic brake of Embodiment 3.
  • Embodiment 1 The electromagnetic brake of this embodiment will be described with reference to FIGS. 1 to 4.
  • FIG. 1 is a cross-sectional view of the electromagnetic brake according to the first embodiment of the present invention
  • FIG. 2 is a cross-sectional view showing the braking time of the electromagnetic brake
  • FIG. 3 is a front view of the field of the electromagnetic brake
  • FIG. It is sectional drawing of the hoisting machine of an elevator.
  • the electromagnetic brake 100 of the first embodiment will be described with reference to FIGS. 1 to 4.
  • the electromagnetic brake 100 of the first embodiment has an armature 11 which is a movable portion capable of reciprocating in a direction in which a shoe 12 mounted on one surface is brought into contact with and detached from a braking surface, and a surface of the armature 11 opposite to the braking surface. It is provided with a field 13 provided so as to face the above.
  • the electromagnetic brake 100 further includes an electromagnetic coil 14, a guide pin 15, and a spring 16.
  • the electromagnetic coil 14, the guide pin 15, and the spring 16 are provided in the field 13 of the electromagnetic brake 100.
  • the electromagnetic coil 14 has a function of attracting the armature 11 to the field 13 side by the electromagnetic force generated by energization. As shown in FIG. 3, the electromagnetic coil 14 is provided in a circular shape so as to surround the guide pin 15 in the field 13 when the armature 11 side is viewed from the field 13 side.
  • the guide pin 15 has a function of guiding the movement when the armature 11, which is a movable part, reciprocates.
  • the guide pin 15 is provided with a shaft provided in a direction parallel to the direction in which the armature 11 reciprocates (hereinafter, referred to as an axial direction).
  • the armature 11 receives a force that is displaced in a direction orthogonal to the axial direction of the guide pin 15 (hereinafter referred to as a braking direction) due to the frictional force applied to the shoe 12 when the electromagnetic brake 100 is braked, but the guide pin 15 is electromagnetic. It has a role of restraining the armature 11 from being displaced in the braking direction when the brake 100 is braked.
  • a pair of storage portions 13a for storing the guide pins 15 are formed in the field 13.
  • the shape of the storage portion 13a is formed corresponding to the shape of the guide pin 15 so that the guide pin 15 can be accommodated.
  • the guide pin 15 may be stored in the storage portion 13a and may not be fixed to the storage portion 13a.
  • the guide pin 15 may be housed in the storage portion 13a and may be provided so as to project from the field 13.
  • the inside of the electromagnetic coil 14 (center side in the radial direction) in the field 13 is called an inner pole portion, and the storage portion 13a is provided in the inner pole portion.
  • the guide pin 15 has a cylindrical shape having a hollow structure, and the spring 16 is housed in the hollow portion.
  • the spring 16 is provided so as to constantly apply an elastic force to the armature 11 in a direction away from the field 13. That is, as shown in FIG. 2, the spring 16 is provided in a state of protruding from the hollow structure of the guide pin 15.
  • the spring 16 is used in the first embodiment, any elastic member having the same function as the spring 16 may be used, and rubber may be used in addition to the spring.
  • the guide pin 15 is configured to have a storage portion 13a on the field 13 side and be arranged on the field side storage portion 13a, but a storage portion may be provided on the armature 11 side and arranged on the armature 11 side storage portion.
  • the electromagnetic brake 100 of the first embodiment has a structure in which two guide pins 15 and two springs 16 are arranged, but each of them may be one or three or more. Further, the numbers of the guide pins 15 and the springs 16 do not have to be the same. If two or more guide pins 15 are arranged, the reciprocating movement of the armature 11 can be easily restrained in the axial direction, which is preferable.
  • the armature 11 is formed with a guide hole 11a into which the guide pin 15 is inserted.
  • the armature 11 is provided so as to operate with the guide pin 15 inserted into the guide hole 11a.
  • the guide pin 15 guides the operation of the armature 11 in the axial direction of the guide pin 15 in a state of being inserted into the guide hole 11a.
  • the armature-side tip of the guide pin 15 is arranged so as to maintain the state of being inserted into the guide hole 11a.
  • the guide pin 15 also functions as a torque receiving portion that receives the torque received by the armature 11 via the shoe 12 when the electromagnetic brake 100 is braked. That is, in the electromagnetic brake 100 of the first embodiment, the guide pin 15 can prevent the armature 11 from being displaced in the braking direction, so that the shoe 12 can uniformly press the braking surface.
  • the guide hole 11a can be formed by directly processing the armature 11.
  • the diameter of the guide hole 11a is formed to be slightly larger than the diameter of the guide pin 15.
  • the inner diameter of the guide hole 11a may be such that the armature 11 can be restrained in the axial direction by the guide pin 15 and can operate, and the guide pin 15 can operate smoothly.
  • a member such as a bush may be used between the guide pin 15 and the guide hole 11a.
  • the electromagnetic brake 100 of the first embodiment when the energization of the electromagnetic coil 14 is cut off, the electromagnetic force generated by the electromagnetic coil 14 disappears, and the elastic force of the spring 16 causes the armature 11 to move away from the field 13. Moving. As a result, the shoe 12 presses the braking surface, and the electromagnetic brake 100 exerts a braking force. Further, when the electromagnetic coil 14 is energized, the armature 11 is attracted to the field 13 by the electromagnetic force generated in the electromagnetic coil 14, the armature 11 is separated from the braking surface against the elastic force of the spring 16, and the electromagnetic brake 100 is in the braking state. To cancel.
  • the spring 16 is housed in the space formed by the guide pin inner wall 15a of the hollow guide pin 15. As shown in FIG. 2, the spring 16 is provided so as to protrude from the guide pin in a state where the electromagnetic coil 14 is not energized and the armature 11 is not attracted to the field 13 side. That is, by housing the spring 16 in the guide pin 15, the arrangement of the component parts in the electromagnetic brake 100 is simplified. Therefore, it is possible to reduce the size of the electromagnetic brake 100 while ensuring the magnetic path cross-sectional area. Further, the storage portion 13a on the field 13 side for storing the guide pin 15 can be shared with the spring storage portion for storing the spring 16. Therefore, the electromagnetic brake 100 of the first embodiment does not need to be provided with accommodating portions for both the guide pin 15 and the spring 16, and the processing cost can be reduced.
  • the guide pin 15 has a cylindrical shape, but the shape is not limited to such a shape.
  • the guide pin 15 can arrange the spring 16 inside the hollow structure, guides the operation of the armature 11, and has an outer diameter shape capable of receiving torque during electromagnetic brake braking, and is polygonal or the like. It may be formed in the shape of.
  • the guide pin 15 does not have to have a penetrating structure such as a tubular shape as long as it can be stored in the storage portion 13a and the spring 16 can be arranged. It should be noted that not only the case where the guide pin has one hollow structure but also the structure where the guide pin has a plurality of hollow structures is included in the tubular shape. When the guide pin has a plurality of hollow structures, a spring may be arranged in each of the plurality of hollow structures. When the storage portion on the armature side is provided and the guide pin is arranged in the storage portion, the spring 16 is provided so as to constantly apply an elastic force to the field 13.
  • the electromagnetic brake 100 of the first embodiment when the energization of the electromagnetic coil 14 is cut off, the electromagnetic force generated by the electromagnetic coil 14 disappears, and the elasticity provided by the spring 16 to the field 13 is eliminated. The force causes the armature 11 to move away from the field 13. As a result, the shoe 12 presses the braking surface, and the electromagnetic brake 100 exerts a braking force. Further, when the electromagnetic coil 14 is energized, the armature 11 is attracted to the field 13 by the electromagnetic force generated in the electromagnetic coil 14, the armature 11 is separated from the braking surface against the elastic force of the spring 16, and the electromagnetic brake 100 is in the braking state. To cancel.
  • the configuration in which the guide pin described above is housed on the armature side can be similarly applied to the following other embodiments.
  • the electromagnetic brake 100 of the first embodiment further includes a switch 17.
  • the switch 17 includes a base portion 17a and a contact portion 17b, the base portion 17a is provided on the side surface of the field 13, and the contact portion 17b is provided on the base portion 17a.
  • the switch 17 determines the braking of the electromagnetic brake 100.
  • FIG. 2 shows a state when the electromagnetic brake is braked. In this case, the armature 11 and the switch 17 are separated from each other, and the switch 17 is in an electrically non-contact state. On the other hand, when the electromagnetic brake 100 is in the non-braking state as shown in FIG.
  • the armature 11 is attracted to the field 13 side by electromagnetic suction, the armature 11 pushes the switch 17, and the switch 17 is in an electrically contact state, that is, energized. It will be in the state of being. In this way, the switch 17 can determine the braking of the electromagnetic brake 100.
  • the switch 17 is pushed in according to the amount of operation of the armature 11 when the armature 11 is attracted to the field 13 side by the energization of the electromagnetic coil 14.
  • the switch 17 determines the braking of the electromagnetic brake 100 according to the amount pushed into the armature 11.
  • the movement of the armature 11 is constrained in the axial direction by the guide pin 15, so that the armature 11 can be prevented from tilting with respect to the field 13.
  • the switch 17 can normally determine the braking of the electromagnetic brake 100.
  • the armature 11 When the armature 11 is pulled toward the field 13, if the armature 11 is not constrained in the axial direction and is tilted with respect to the field 13, the amount of pushing the switch 17 becomes smaller according to the amount of movement of the armature 11. Or the armature 11 does not push the switch 17. Then, although the armature 11 operates in the axial direction, the switch 17 is not properly pushed in according to the operation of the armature 11, and the switch 17 cannot normally determine the braking of the electromagnetic brake 100.
  • FIG. 4 is a cross-sectional view showing an elevator hoisting machine 500 using the electromagnetic brake 100 of the first embodiment.
  • the elevator hoisting machine 500 includes a rope wheel 51 around which a main rope (not shown) used in the elevator is wound, a rotor 52 and a stator 53 constituting a motor for rotating the rope wheel 51, and rotation of the rotor 52. It is composed of a plurality of electromagnetic brakes 100 that brake the rotation of the rope wheel 51 through braking, and a housing 55 that arranges the electromagnetic brake 100, the stator 53, and the rotor 52 via the bearing 54.
  • the electromagnetic brake 100 of the elevator hoisting machine 500 cuts off the energization of the electromagnetic coil 14 to release the force that draws the armature 11 toward the field 13, and causes the armature 11 to move away from the field 13 by the elastic force of the spring 16.
  • a braking force is exerted by the frictional force to brake the rotation of the rope wheel 51.
  • the armature 11 resists the elastic force of the spring 16 and is attracted to the field 13 side, and the shoe 12 is moved away from the rotor 52. By moving it, the braking state of the rotation of the sheave 51 is released.
  • the electromagnetic brake 100 of the first embodiment simplifies the arrangement of component parts by accommodating the spring 16 in the guide pin 15. Therefore, it is possible to reduce the size of the electromagnetic brake 100 while ensuring the magnetic path cross-sectional area. Therefore, in the elevator hoisting machine 500 having the electromagnetic brake 100 of the first embodiment, the elevator hoisting machine 500 can also be miniaturized by reducing the size of the electromagnetic brake 100.
  • FIG. 5 is a cross-sectional view showing an electromagnetic brake according to a second embodiment of the present invention.
  • FIG. 6 is a front view of the field in the electromagnetic brake according to the second embodiment of the present invention.
  • the electromagnetic brake of this embodiment will be described with reference to FIGS. 5 to 6. Overlapping description of the components common to the first embodiment will be omitted.
  • the storage portion 21a of the guide pin 25 is provided in the armature 21, and the guide pin 25 is housed in the storage portion 21a of the armature 21. Further, the guide hole 23a is provided at a position facing the storage portion 21a in the field 23, and the guide pin 25 is inserted into the guide hole 23a.
  • the function of the guide pin 25 is the same as that of the guide pin of the first embodiment. Further, the guide pin 25 has a cylindrical shape having a hollow structure, and the point that the spring 26 is housed in the hollow portion is the same as that of the first embodiment.
  • two guide holes 23a are provided in the outer pole portion of the electromagnetic coil 24, and the guide pin 25 is inserted into the guide hole 23a.
  • the storage portion 21a on the armature 21 side for storing the guide pin 25 can be shared with the spring storage portion for storing the spring 26. This simplifies the arrangement of components in the electromagnetic brake 200. Therefore, it is not necessary to provide storage portions for both the guide pin 25 and the spring 26, and the electromagnetic brake 200 can be miniaturized while ensuring the magnetic path cross-sectional area, and the processing cost can be reduced. ..
  • the guide hole 23a is provided in the outer pole portion of the electromagnetic coil 24, it is possible to shorten the peripheral length of the coil. Therefore, it is possible to reduce the cost of the electromagnetic coil and the required voltage.
  • FIG. 7 is a cross-sectional view showing an electromagnetic brake according to a third embodiment of the present invention.
  • FIG. 8 is a front view of the field in the electromagnetic brake according to the third embodiment of the present invention.
  • the electromagnetic brake of this embodiment will be described with reference to FIGS. 7 to 8. Overlapping description will be omitted for the components common to the first and second embodiments.
  • one guide pin 35 is provided.
  • the field 33 is provided with a storage portion 33a for storing the guide pin 35, and the guide pin 35 is arranged in the storage portion 33a.
  • the storage portion 33a is provided at the inner pole portion of the electromagnetic coil 34.
  • the armature 31 is provided with one guide hole 31a at a position facing the storage portion 33a, and the guide pin 35 is inserted into the guide hole 31a.
  • the guide pin 35 has a cylindrical shape having a hollow structure.
  • the guide pin 35 has four cylindrical hollow structures, and the hollow structure is formed by the inner wall 35a.
  • the cylindrical hollow structure is evenly provided in the circumferential direction.
  • a spring 36 is housed in each of the hollow portions of the guide pin 35. Therefore, the spring 36 can uniformly apply the elastic force to the armature 31.
  • the spring 36 Since the spring 36 is housed in the hollow portion of the guide pin 35, it is not necessary to separately provide a spring storage portion for storing the spring 36. In this way, the arrangement of the components in the electromagnetic brake 300 is simplified. Therefore, it is not necessary to provide storage portions for both the guide pin 35 and the spring 36, and the electromagnetic brake 300 can be miniaturized while ensuring the magnetic path cross-sectional area, and the processing cost can be reduced. ..
  • the armature is attracted to the field side by energizing the electromagnetic coil. On the contrary, the armature is repelled to the braking surface side when the electromagnetic coil is energized. You may let it.
  • a magnet 18 is provided in the armature 11, and the armature 11 provided with the magnet 18 repels when the electromagnetic coil 14 is energized to repel the armature 11. It can be operated toward the braking surface side. In other words, the magnet 18 which is the repulsive means moves the armature 11 away from the field 13.
  • the electromagnetic brake 100 operates. To do.
  • the armature 11 with a magnet 18 and to operate the armature 11 in the same manner as described above.
  • the electromagnetic brake used in the elevator hoisting machine has been described, but the present invention is not limited to the elevator hoisting machine and can be applied to other braking devices.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Power Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Braking Arrangements (AREA)
PCT/JP2019/044520 2019-11-13 2019-11-13 電磁ブレーキ Ceased WO2021095158A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2019/044520 WO2021095158A1 (ja) 2019-11-13 2019-11-13 電磁ブレーキ
CN201980101977.3A CN114630971B (zh) 2019-11-13 2019-11-13 电磁制动器
JP2021555690A JP7217815B2 (ja) 2019-11-13 2019-11-13 電磁ブレーキ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/044520 WO2021095158A1 (ja) 2019-11-13 2019-11-13 電磁ブレーキ

Publications (1)

Publication Number Publication Date
WO2021095158A1 true WO2021095158A1 (ja) 2021-05-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/044520 Ceased WO2021095158A1 (ja) 2019-11-13 2019-11-13 電磁ブレーキ

Country Status (3)

Country Link
JP (1) JP7217815B2 (https=)
CN (1) CN114630971B (https=)
WO (1) WO2021095158A1 (https=)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0234837A (ja) * 1988-07-25 1990-02-05 Fuji Photo Film Co Ltd ハロゲン化銀カラー写真感光材料
JP2013148125A (ja) * 2012-01-17 2013-08-01 Mitsubishi Electric Corp 制動装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0723622Y2 (ja) * 1988-08-30 1995-05-31 神鋼電機株式会社 騒音防止構造を有する電磁クラッチ・ブレーキ
US8151950B2 (en) * 2006-04-17 2012-04-10 Otis Elevator Company Permanent magnet elevator disk brake
JP6194204B2 (ja) * 2013-08-08 2017-09-06 小倉クラッチ株式会社 電磁ドラムブレーキ
CN204529199U (zh) * 2014-11-27 2015-08-05 爱力维特驱动科技(苏州)有限公司 一种电梯曳引机的制动机构
CN104753245B (zh) * 2015-03-12 2017-03-29 江苏大学 一种基于电动轮的摩擦‑电磁复合制动结构
CN106246765A (zh) * 2016-10-11 2016-12-21 江苏大学 一种双盘式电磁制动器及其在不同工况时的制动方法
JP6697792B2 (ja) * 2017-04-17 2020-05-27 三菱電機株式会社 エレベータの巻上機ブレーキ及びエレベータ巻上機
CN208120649U (zh) * 2018-04-03 2018-11-20 上海佐锦精密机械有限公司 一种电梯制动装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0234837A (ja) * 1988-07-25 1990-02-05 Fuji Photo Film Co Ltd ハロゲン化銀カラー写真感光材料
JP2013148125A (ja) * 2012-01-17 2013-08-01 Mitsubishi Electric Corp 制動装置

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Publication number Publication date
JP7217815B2 (ja) 2023-02-03
CN114630971B (zh) 2023-07-25
CN114630971A (zh) 2022-06-14
JPWO2021095158A1 (https=) 2021-05-20

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