WO2018193494A1 - Elevator hoist brake and elevator hoist - Google Patents

Elevator hoist brake and elevator hoist Download PDF

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Publication number
WO2018193494A1
WO2018193494A1 PCT/JP2017/015446 JP2017015446W WO2018193494A1 WO 2018193494 A1 WO2018193494 A1 WO 2018193494A1 JP 2017015446 W JP2017015446 W JP 2017015446W WO 2018193494 A1 WO2018193494 A1 WO 2018193494A1
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WO
WIPO (PCT)
Prior art keywords
braking
brake
brake shoe
iron core
hoisting machine
Prior art date
Application number
PCT/JP2017/015446
Other languages
French (fr)
Japanese (ja)
Inventor
佳典 谷
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2019513511A priority Critical patent/JP6697792B2/en
Priority to PCT/JP2017/015446 priority patent/WO2018193494A1/en
Priority to CN201780089485.8A priority patent/CN110506022B/en
Publication of WO2018193494A1 publication Critical patent/WO2018193494A1/en

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    • 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
    • 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
    • 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
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
    • F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
    • 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

Definitions

  • the present invention relates to an elevator hoisting brake that brakes rotation of a drive sheave and an elevator hoisting machine using the same.
  • a coil spring is provided between the electromagnetic magnet and the movable iron core.
  • a lining is supported on the movable iron core.
  • the buffer member is provided in the surface facing the movable iron core of an electromagnetic magnet. The buffer member absorbs the impact of the collision of the movable iron core with the electromagnetic magnet when the movable iron core is attracted (see, for example, Patent Document 1).
  • a gap is generated between the electromagnetic magnet and the movable iron core when the lining is pressed against the braking surface of the brake drum, that is, during braking. Further, when the movable iron core is attracted by the electromagnetic magnet, that is, at the time of non-braking, a gap is generated between the lining and the braking surface.
  • the dimension of the gap during braking and the dimension of the gap during non-braking are the same.
  • the gap generated between the electromagnetic magnet and the movable iron core during braking is larger from the viewpoint of more reliably separating the lining from the braking surface during non-braking and preventing so-called dragging.
  • the present invention has been made in order to solve the above-described problems.
  • the clearance generated between the electromagnetic magnet and the movable iron core during braking and the clearance generated between the brake shoe and the braking surface during non-braking are provided.
  • An object is to obtain an elevator hoist brake and an elevator hoist that can be easily managed.
  • the elevator hoisting machine brake according to the present invention is displaceable with respect to the electromagnetic magnet and the electromagnetic magnet, is supported by the movable iron core attracted by the electromagnetic magnet, and the movable iron core, and by the displacement of the movable iron core, A brake shoe that can be displaced between a braking position that contacts the braking surface and a release position that is separated from the braking surface, a braking spring that moves the movable iron core away from the electromagnetic magnet and presses the braking shoe against the braking surface, and between the movable iron core and the brake shoe
  • the amount of compression of the elastic member when the brake shoe is in the release position is larger than the amount of compression of the elastic member when the brake shoe is in the braking position.
  • an elastic member is provided between the movable iron core and the brake shoe, and the compression amount of the elastic member when the brake shoe is in the release position is such that the brake shoe is in the braking position. Since it is larger than the compression amount of the elastic member at a certain time, it is possible to easily manage the clearance generated between the electromagnetic magnet and the movable iron core during braking and the clearance generated between the brake shoe and the braking surface during non-braking. it can.
  • FIG. 1 is a perspective view showing an elevator according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic cross-sectional view along the axis of the elevator hoisting machine of FIG. 1. It is a front view which shows the structure inside the magnet support part of FIG. It is sectional drawing which shows the state at the time of the non-braking of the hoisting machine brake of FIG. It is sectional drawing which shows the state at the time of braking of the hoisting machine brake of FIG. It is a side view which shows the hoisting machine brake by Embodiment 2 of this invention. It is sectional drawing which shows the state at the time of the non-braking of the hoisting machine brake of FIG. It is sectional drawing which shows the state at the time of braking of the hoisting machine brake of FIG. It is sectional drawing which shows the hoisting machine brake by Embodiment 3 of this invention.
  • FIG. 1 is a perspective view showing a machine room-less type elevator according to Embodiment 1 of the present invention.
  • a car 2 and a counterweight 3 are provided in a hoistway 1.
  • FIG. 1 is a perspective view of the hoistway 1 and the car 2.
  • the counterweight 3 is disposed behind the car 2 so as to face the back surface of the car 2 when viewed from the landing side when located at the same height as the car 2.
  • a first base 4 and a second base 5 are installed in the hoistway pit 1a.
  • a first car guide rail 6a and a second car guide rail 6b are installed on the first base 4.
  • the car 2 moves up and down in the hoistway 1 while being guided by the first car guide rail 6a and the second car guide rail 6b.
  • a first counterweight guide rail 7a and a second counterweight guide rail 7b are installed on the second base 5.
  • the counterweight 3 moves up and down in the hoistway 1 while being guided by the first counterweight guide rail 7a and the second counterweight guide rail 7b.
  • An elevator hoisting machine 8 for raising and lowering the car 2 and the counterweight 3 is installed in the lower part of the hoistway 1.
  • an L-shaped return beam 9 is installed at the top of the hoistway 1.
  • the return wheel tension 9 is supported by a first car guide rail 6a, a first counterweight guide rail 7a, and a second counterweight guide rail 7b.
  • the return beam 9 has a cage return beam 10 and a counterweight return beam 11.
  • the counterweight return beam 11 is connected to one end of the cage return beam 10 at a right angle.
  • the first car return wheel 12a and the second car return wheel 12b are supported on the car return beam 10.
  • a counterweight return wheel 13 is supported by the counterweight return beam 11.
  • a first car suspension car 14a and a second car suspension car 14b are provided in the lower part of the car 2.
  • a counterweight suspension wheel 15 is provided on the upper part of the counterweight 3.
  • the car 2 and the counterweight 3 are suspended in the hoistway 1 by a plurality of main ropes 16 (only one is shown in the figure) which are suspension bodies.
  • the leashing beam 17 is fixed horizontally between the upper end of the second car guide rail 6b and the upper end of the second counterweight guide rail 7b.
  • the tie-down beam 17 is provided with a cage-side tie-down portion (not shown).
  • the counterweight return beam 11 is provided with a counterweight-side leash stopper 18.
  • the main rope 16 has a first end connected to the car-side rope stopper and a second end connected to the counterweight-side rope stopper 18.
  • the main rope 16 is, in order from the first end side, a first car suspension wheel 14a, a second car suspension wheel 14b, a first car return wheel 12a, a second car return wheel 12b, and an elevator winding. It is wound around the upper machine 8, the counterweight wheel 13, and the counterweight suspension wheel 15.
  • the elevator according to Embodiment 1 is a 2: 1 roping elevator.
  • a control panel 19 is installed in the lower part of the hoistway 1.
  • the control panel 19 is provided with an elevator control device that controls the operation of the car 2.
  • FIG. 2 is a schematic cross-sectional view along the axis of the elevator hoisting machine 8 of FIG.
  • the housing 21 has a flat shaft support portion 21a and a cylindrical stator support portion 21b.
  • the stator support portion 21b protrudes from the shaft support portion 21a to one side.
  • a horizontal fixed shaft 22 is supported at the center of the shaft support portion 21a.
  • Rotating body 24 is rotatably supported on fixed shaft 22 via a pair of bearings 23.
  • the bearings 23 are arranged at intervals in the axial direction of the fixed shaft 22.
  • the rotating body 24 is integrally provided with a cylindrical drive sheave 24a and a cylindrical magnet support 24b.
  • the main rope 16 is wound around the drive sheave 24a.
  • a plurality of rope grooves into which the main rope 16 is inserted are provided on the outer peripheral surface of the drive sheave 24a.
  • the magnet support 24b is provided at the axial end of the rotating body 24 on the housing 21 side. Further, the magnet support portion 24b faces the inner peripheral surface of the stator support portion 21b. Furthermore, the magnet support portion 24b is disposed coaxially with the stator support portion 21b and is surrounded by the stator support portion 21b. The outer diameter of the magnet support portion 24b is larger than the outer diameter of the drive sheave 24a.
  • the stator 25 is fixed to the inner peripheral surface of the stator support portion 21b.
  • a plurality of permanent magnets 26 facing the stator 25 are fixed to the outer peripheral surface of the magnet support portion 24b at intervals in the circumferential direction.
  • the stator 25 and the permanent magnet 26 constitute a hoisting machine motor 27.
  • the rotary body 24 rotates with the driving force of the hoisting machine motor 27, and the cage
  • FIG. 3 is a front view showing an internal configuration of the magnet support portion 24b of FIG. Although omitted in FIG. 2, a pair of hoisting machine brakes 31 for braking the rotation of the rotating body 24 are accommodated inside the magnet support portion 24b.
  • the hoisting machine brakes 31 have the same structure as each other and are disposed in opposite directions.
  • Each hoisting machine brake 31 is opposed to the inner peripheral surface of the magnet support portion 24b.
  • the braking surface 24c of the first embodiment is the inner peripheral surface of the magnet support portion 24b.
  • the magnet support portion 24b also serves as a brake drum.
  • Each hoisting machine brake 31 has an electromagnetic magnet 32, a movable iron core 33, a brake shoe 34, and a plurality of braking springs 35.
  • the electromagnetic magnets 32 of the two hoisting machine brakes 31 are integrally formed.
  • the movable iron core 33 can be displaced in a direction in which it contacts or leaves the electromagnetic magnet 32 (the left-right direction in FIG. 3).
  • the movable iron core 33 is attracted to the electromagnetic magnet 32 by exciting the electromagnetic magnet 32.
  • the movable core 33 has a plate-shaped movable core body and a plurality of connecting pins 36.
  • the connecting pin 36 protrudes from the movable core body to the side opposite to the electromagnetic magnet 32.
  • the brake shoe 34 is supported by the movable core body via the connecting pin 36.
  • the brake shoe 34 can be displaced between the braking position and the release position by the displacement of the movable iron core 33.
  • the braking position is a position where the brake shoe 34 contacts the braking surface 24c.
  • the release position is a position where the brake shoe 34 is separated from the braking surface 24c and faces the braking surface 24c.
  • the brake shoe 34 has a shoe main body 37 and a lining 38. Furthermore, at least a part of the brake shoe 34 is made of a magnetic material having excellent magnetization characteristics, such as carbon steel for mechanical structure. In this example, the entire shoe body 37 is made of a magnetic material.
  • the lining 38 contacts the braking surface 24c when the brake shoe 34 is in the braking position. Further, the lining 38 faces the braking surface 24c through a gap when the brake shoe 34 is in the release position.
  • the brake spring 35 is provided between the electromagnetic magnet 32 and the movable iron core 33.
  • the braking spring 35 separates the movable iron core 33 from the electromagnetic magnet 32 and presses the brake shoe 34 against the braking surface 24c. Thereby, the rotation of the rotating body 24 is braked or the stationary state of the rotating body 24 is maintained.
  • FIG. 4 is a cross-sectional view showing a state when the hoisting machine brake 31 of FIG. 3 is not braked
  • FIG. 5 is a cross-sectional view showing a state of the hoisting machine brake 31 of FIG.
  • the electromagnetic magnet 32 has a fixed iron core 39 and a coil 40 embedded in the fixed iron core 39.
  • the fixed iron core 39 is provided with a plurality of spring accommodating recesses 39a.
  • a brake spring 35 is inserted into each spring accommodating recess 39a.
  • a through hole 33a is provided in the center of the movable iron core 33.
  • the shoe main body 37 has a cylindrical penetrating portion 37a protruding toward the electromagnetic magnet 32 side.
  • the through portion 37 a is inserted into the through hole 33 a and penetrates the movable iron core 33.
  • a shoe insertion recess 39b is provided in the center of the surface of the fixed iron core 39 facing the movable iron core 33.
  • the tip of the through portion 37a is inserted into the shoe insertion recess 39b.
  • a gap is left between the end face of the through hole 33a and the bottom face of the shoe insertion recess 39b.
  • Each connecting pin 36 has a small diameter portion 36a and a large diameter portion 36b.
  • the diameter of the large diameter part 36b is larger than the diameter of the small diameter part 36a.
  • the large diameter portion 36b is provided at the end of the small diameter portion 36a opposite to the movable core 33. The end of the small diameter portion 36a opposite to the large diameter portion 36b is fixed to the movable core body.
  • the shoe body 37 is provided with a plurality of cavities 37b. Each large diameter part 36b is accommodated in the cavity 37b.
  • the shoe body 37 is provided with a plurality of connecting holes 37 c that connect the cavity 37 b to the external space of the shoe body 37. A small diameter portion 36a is passed through each connecting hole 37c.
  • the inner diameter of the connecting hole 37c is smaller than the inner diameter of the cavity 37b and the outer diameter of the large diameter portion 36b. This prevents the connecting pin 36 from coming off the brake shoe 34.
  • the dimension of the cavity 37b in the displacement direction of the movable iron core 33 is larger than the dimension of the large-diameter portion 36b in the same direction.
  • a plurality of play springs 41 as elastic members are provided between the movable iron core 33 and the brake shoe 34.
  • each play spring 41 is provided between the end surface of the large-diameter portion 36b opposite to the small-diameter portion 36a and the inner surface of the cavity 37b facing the end surface.
  • All the free springs 41 are compression springs having the same size and the same spring coefficient.
  • the electromagnetic magnet 32 When the car 2 is traveling, the electromagnetic magnet 32 is excited, and the movable iron core 33 is attracted to the electromagnetic magnet 32 against the braking spring 35. As a result, the brake shoe 34 is displaced to the release position. When the brake shoe 34 is in the release position, the lining 38 is separated from the braking surface 24c, and the tip of the penetrating portion 37a is inserted into the shoe insertion recess 39b. Further, the idle spring 41 is compressed between the shoe main body 37 and the connecting pin 36 by the attractive force of the electromagnetic magnet 32.
  • the energization of the electromagnetic magnet 32 is cut off, and the movable iron core 33 is separated from the electromagnetic magnet 32 by the braking spring 35.
  • the brake shoe 34 is displaced to the braking position.
  • the lining 38 is pressed against the braking surface 24c, and the tip of the penetrating portion 37a is pulled out from the shoe insertion recess 39b.
  • the play spring 41 is compressed between the shoe main body 37 and the connecting pin 36 by the spring force of the brake spring 35.
  • the force F1 for attracting the brake shoe 34 by the electromagnetic magnet 32 when braking is not performed, that is, when the braking force is released, is based on the force F2 that presses the brake shoe 34 against the braking surface 24c by the braking spring 35 when braking, that is, when the brake shoe is dropped. Is also set larger. Thereby, the compression amount of the idle spring 41 when the brake shoe 34 is in the release position is larger than the compression amount of the idle spring 41 when the brake shoe 34 is in the braking position.
  • the compression amount of the play spring 41 is an amount that depends on the force applied to the play spring 41, and is, for example, the extension / contraction distance of the play spring 41 in the extension / contraction direction.
  • the gap dimension g1 (FIG. 4) between the brake shoe 34 and the braking surface 24c during non-braking is larger than the gap dimension g2 (FIG. 5) between the electromagnetic magnet 32 and the movable iron core 33 during braking. large.
  • the gap dimension g2 between the electromagnetic magnet 32 and the movable iron core 33 during braking is smaller than the gap dimension g1 between the brake shoe 34 and the braking surface 24c during non-braking.
  • the play spring 41 is provided between the movable iron core 33 and the brake shoe 34, and the brake shoe 34 is in the release position.
  • the compression amount of the play spring 41 is larger than the compression amount of the play spring 41 when the brake shoe 34 is in the braking position.
  • the relationship of g1> g2 can be established without strictly adjusting the gap dimension g1 and the gap dimension g2.
  • the gap dimension g1 can be increased so that the lining 38 can be more reliably separated from the braking surface 24c during non-braking, thereby preventing so-called dragging.
  • the shoe main body 37 made of a magnetic material is provided with the penetrating portion 37a penetrating the movable iron core 33, the suction force F1 of the electromagnetic magnet 32 against the brake shoe 34 can be more easily expressed by the pressing force F2 by the brake spring 35. Can also be increased.
  • the gap dimension g1 can be made larger than the gap dimension g2.
  • the entire shoe main body 37 is made of a magnetic material, but only the penetrating portion 37a may be made of a magnetic material.
  • FIG. 6 is a side view showing a hoisting machine brake 31 according to Embodiment 2 of the present invention
  • FIG. 7 is a cross-sectional view showing a state when the hoisting machine brake 31 of FIG. 6 is not braked
  • FIG. It is sectional drawing which shows the state at the time of braking of the hoisting machine brake 31 of FIG.
  • the basic configuration is the same as that of the hoisting machine brake 31 of the first embodiment, and parts corresponding to the respective parts of the hoisting machine brake 31 of the first embodiment are denoted by the same reference numerals as in the first embodiment. is doing.
  • a pair of hoisting machine brakes 31 are arranged outside the rotating body 24.
  • the magnet support part 24b is arrange
  • the stator 25 is being fixed to the outer peripheral surface of the stator support part 21b, and the permanent magnet 26 is being fixed to the internal peripheral surface of the magnet support part 24b.
  • the braking surface 24c of the second embodiment is an outer peripheral surface of the magnet support portion 24b. That is, by pressing the brake shoe 34 against the outer peripheral surface from the outside of the magnet support portion 24b, the rotation of the rotating body 24 is braked or the stationary state of the rotating body 24 is maintained.
  • Other configurations are the same as those in the first embodiment.
  • FIG. 9 is a sectional view showing a hoisting machine brake 31 according to Embodiment 3 of the present invention.
  • the shoe main body 37 is provided with the penetrating portion 37a, but in the third embodiment, the fixed iron core 39 is provided with the penetrating portion 39c.
  • Other configurations are the same as those in the first embodiment.
  • the play spring 41 is shown as the elastic member.
  • the elastic member is not limited to a spring, and may be, for example, a rubber piece or a soft plastic piece.
  • the two hoisting machine brakes 31 are arranged in the elevator hoisting machine 8, but one or three or more may be used.
  • the layout and roping method of the elevator as a whole are not limited to the example of FIG.
  • the suspension body may be a belt.
  • the present invention can be applied to various types of elevators such as an elevator having a machine room, a double deck elevator, or a one-shaft multi-car elevator.
  • the one-shaft multi-car system is a system in which the upper car and the lower car arranged directly below the upper car are independently raised and lowered on a common hoistway.
  • 24a drive sheave, 27 hoisting machine motor, 31 hoisting machine brake, 32 electromagnetic magnet, 33 moving iron core, 34 brake shoe, 35 braking spring, 37a, 39c penetrating part, 41 play spring (elastic member).

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

Abstract

In this elevator hoist brake, a brake shoe is supported by a movable core. The displacement of the movable core enables the brake shoe to be displaced between a braking position where the brake shoe is in contact with a braking surface and a released position where the brake shoe is separated from the braking surface. An elastic member is provided between the movable core and the brake shoe. The amount of compression of the elastic member when the brake shoe is located at the released position is greater than the amount of compression of the elastic member when the brake shoe is located at the braking position.

Description

エレベータの巻上機ブレーキ及びエレベータ巻上機Elevator hoist brake and elevator hoist
　この発明は、駆動シーブの回転を制動するエレベータの巻上機ブレーキ、及びそれを用いたエレベータ巻上機に関するものである。 The present invention relates to an elevator hoisting brake that brakes rotation of a drive sheave and an elevator hoisting machine using the same.
　従来のエレベータの巻上機ブレーキでは、電磁マグネットと可動鉄心との間にコイルばねが設けられている。可動鉄心には、ライニングが支持されている。また、電磁マグネットの可動鉄心に対向する面には、緩衝部材が設けられている。緩衝部材は、可動鉄心の吸引時に、可動鉄心の電磁マグネットへの衝突の衝撃を吸収する（例えば、特許文献１参照）。 In conventional elevator hoisting machine brakes, a coil spring is provided between the electromagnetic magnet and the movable iron core. A lining is supported on the movable iron core. Moreover, the buffer member is provided in the surface facing the movable iron core of an electromagnetic magnet. The buffer member absorbs the impact of the collision of the movable iron core with the electromagnetic magnet when the movable iron core is attracted (see, for example, Patent Document 1).
特開２００６－８９１６２号公報JP 2006-89162 A
　上記のような従来の巻上機ブレーキでは、ライニングがブレーキドラムの制動面に押し当てられたとき、即ち制動時に、電磁マグネットと可動鉄心との間に隙間が生じる。また、電磁マグネットにより可動鉄心を吸引したとき、即ち非制動時には、ライニングと制動面との間に隙間が生じる。そして、これら制動時の隙間の寸法と非制動時の隙間の寸法とは同じになっている。 In the conventional hoisting machine brake as described above, a gap is generated between the electromagnetic magnet and the movable iron core when the lining is pressed against the braking surface of the brake drum, that is, during braking. Further, when the movable iron core is attracted by the electromagnetic magnet, that is, at the time of non-braking, a gap is generated between the lining and the braking surface. The dimension of the gap during braking and the dimension of the gap during non-braking are the same.
　一方、電磁マグネットの吸引能力及び静粛性の点から、制動時に電磁マグネットと可動鉄心との間に生じる隙間は小さくすることが望まれている。また、非制動時にライニングをより確実に制動面から離し、いわゆる引き摺りを防止する点から、非制動時にライニングと制動面との間に生じる隙間は大きい方が望ましい。 On the other hand, it is desired to reduce the gap generated between the electromagnetic magnet and the movable iron core during braking from the viewpoint of the attraction capability and quietness of the electromagnetic magnet. In addition, it is desirable that the gap generated between the lining and the braking surface during non-braking is larger from the viewpoint of more reliably separating the lining from the braking surface during non-braking and preventing so-called dragging.
　このように、隙間寸法には相反する要求があるため、従来の巻上機ブレーキでは、保守作業員による現場での隙間寸法の管理が難しかった。 As described above, since there is a conflicting demand for the gap size, it has been difficult for maintenance personnel to manage the gap size at the site with conventional hoisting machine brakes.
　この発明は、上記のような課題を解決するためになされたものであり、制動時に電磁マグネットと可動鉄心との間に生じる隙間、及び非制動時にブレーキシューと制動面との間に生じる隙間の管理を容易にすることができるエレベータの巻上機ブレーキ及びエレベータ巻上機を得ることを目的とする。 The present invention has been made in order to solve the above-described problems. The clearance generated between the electromagnetic magnet and the movable iron core during braking and the clearance generated between the brake shoe and the braking surface during non-braking are provided. An object is to obtain an elevator hoist brake and an elevator hoist that can be easily managed.
　この発明に係るエレベータの巻上機ブレーキは、電磁マグネット、電磁マグネットに対して変位可能であり、電磁マグネットに吸引される可動鉄心、可動鉄心に支持されており、かつ、可動鉄心の変位により、制動面に接する制動位置と制動面から離れる解除位置との間で変位可能なブレーキシュー、可動鉄心を電磁マグネットから離してブレーキシューを制動面に押し付ける制動ばね、及び可動鉄心とブレーキシューとの間に設けられている弾性部材を備え、ブレーキシューが解除位置にあるときの弾性部材の圧縮量が、ブレーキシューが制動位置にあるときの弾性部材の圧縮量よりも大きい。 The elevator hoisting machine brake according to the present invention is displaceable with respect to the electromagnetic magnet and the electromagnetic magnet, is supported by the movable iron core attracted by the electromagnetic magnet, and the movable iron core, and by the displacement of the movable iron core, A brake shoe that can be displaced between a braking position that contacts the braking surface and a release position that is separated from the braking surface, a braking spring that moves the movable iron core away from the electromagnetic magnet and presses the braking shoe against the braking surface, and between the movable iron core and the brake shoe The amount of compression of the elastic member when the brake shoe is in the release position is larger than the amount of compression of the elastic member when the brake shoe is in the braking position.
　この発明のエレベータの巻上機ブレーキは、可動鉄心とブレーキシューとの間に弾性部材が設けられており、ブレーキシューが解除位置にあるときの弾性部材の圧縮量が、ブレーキシューが制動位置にあるときの弾性部材の圧縮量よりも大きいので、制動時に電磁マグネットと可動鉄心との間に生じる隙間、及び非制動時にブレーキシューと制動面との間に生じる隙間の管理を容易にすることができる。 In the elevator hoisting machine brake of the present invention, an elastic member is provided between the movable iron core and the brake shoe, and the compression amount of the elastic member when the brake shoe is in the release position is such that the brake shoe is in the braking position. Since it is larger than the compression amount of the elastic member at a certain time, it is possible to easily manage the clearance generated between the electromagnetic magnet and the movable iron core during braking and the clearance generated between the brake shoe and the braking surface during non-braking. it can.
この発明の実施の形態１によるエレベータを示す斜視図である。1 is a perspective view showing an elevator according to Embodiment 1 of the present invention. 図１のエレベータ巻上機の軸線に沿う概略の断面図である。FIG. 2 is a schematic cross-sectional view along the axis of the elevator hoisting machine of FIG. 1. 図２の磁石支持部の内部の構成を示す正面図である。It is a front view which shows the structure inside the magnet support part of FIG. 図３の巻上機ブレーキの非制動時の状態を示す断面図である。It is sectional drawing which shows the state at the time of the non-braking of the hoisting machine brake of FIG. 図４の巻上機ブレーキの制動時の状態を示す断面図である。It is sectional drawing which shows the state at the time of braking of the hoisting machine brake of FIG. この発明の実施の形態２による巻上機ブレーキを示す側面図である。It is a side view which shows the hoisting machine brake by Embodiment 2 of this invention. 図６の巻上機ブレーキの非制動時の状態を示す断面図である。It is sectional drawing which shows the state at the time of the non-braking of the hoisting machine brake of FIG. 図７の巻上機ブレーキの制動時の状態を示す断面図である。It is sectional drawing which shows the state at the time of braking of the hoisting machine brake of FIG. この発明の実施の形態３による巻上機ブレーキを示す断面図である。It is sectional drawing which shows the hoisting machine brake by Embodiment 3 of this invention.
　以下、この発明を実施するための形態について、図面を参照して説明する。
　実施の形態１．
　図１はこの発明の実施の形態１による機械室レスタイプのエレベータを示す斜視図である。図１において、昇降路１内には、かご２及び釣合おもり３が設けられている。図１は、昇降路１及びかご２を透視して示している。釣合おもり３は、かご２と同じ高さに位置するときに乗場側から見てかご２の背面に対向するように、かご２の後方に配置されている。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
1 is a perspective view showing a machine room-less type elevator according to Embodiment 1 of the present invention. In FIG. 1, a car 2 and a counterweight 3 are provided in a hoistway 1. FIG. 1 is a perspective view of the hoistway 1 and the car 2. The counterweight 3 is disposed behind the car 2 so as to face the back surface of the car 2 when viewed from the landing side when located at the same height as the car 2.
　昇降路ピット１ａには、第１のベース４及び第２のベース５が設置されている。第１のベース４上には、第１のかごガイドレール６ａ及び第２のかごガイドレール６ｂが設置されている。かご２は、第１のかごガイドレール６ａ及び第２のかごガイドレール６ｂに案内されて昇降路１内を昇降する。 A first base 4 and a second base 5 are installed in the hoistway pit 1a. On the first base 4, a first car guide rail 6a and a second car guide rail 6b are installed. The car 2 moves up and down in the hoistway 1 while being guided by the first car guide rail 6a and the second car guide rail 6b.
　第２のベース５上には、第１の釣合おもりガイドレール７ａ及び第２の釣合おもりガイドレール７ｂが設置されている。釣合おもり３は、第１の釣合おもりガイドレール７ａ及び第２の釣合おもりガイドレール７ｂに案内されて昇降路１内を昇降する。 On the second base 5, a first counterweight guide rail 7a and a second counterweight guide rail 7b are installed. The counterweight 3 moves up and down in the hoistway 1 while being guided by the first counterweight guide rail 7a and the second counterweight guide rail 7b.
　昇降路１内の下部には、かご２及び釣合おもり３を昇降させるエレベータ巻上機８が設置されている。 An elevator hoisting machine 8 for raising and lowering the car 2 and the counterweight 3 is installed in the lower part of the hoistway 1.
　昇降路１の頂部には、Ｌ字形の返し車梁９が設置されている。返し車張り９は、第１のかごガイドレール６ａ、第１の釣合おもりガイドレール７ａ及び第２の釣合おもりガイドレール７ｂにより支持されている。 At the top of the hoistway 1, an L-shaped return beam 9 is installed. The return wheel tension 9 is supported by a first car guide rail 6a, a first counterweight guide rail 7a, and a second counterweight guide rail 7b.
　また、返し車梁９は、かご返し車梁１０と、釣合おもり返し車梁１１とを有している。釣合おもり返し車梁１１は、かご返し車梁１０の一端部に直角に連結されている。 Further, the return beam 9 has a cage return beam 10 and a counterweight return beam 11. The counterweight return beam 11 is connected to one end of the cage return beam 10 at a right angle.
　かご返し車梁１０には、第１のかご返し車１２ａ及び第２のかご返し車１２ｂが支持されている。釣合おもり返し車梁１１には、釣合おもり返し車１３が支持されている。 The first car return wheel 12a and the second car return wheel 12b are supported on the car return beam 10. A counterweight return wheel 13 is supported by the counterweight return beam 11.
　かご２の下部には、第１のかご吊り車１４ａ及び第２のかご吊り車１４ｂが設けられている。釣合おもり３の上部には、釣合おもり吊り車１５が設けられている。 In the lower part of the car 2, a first car suspension car 14a and a second car suspension car 14b are provided. On the upper part of the counterweight 3, a counterweight suspension wheel 15 is provided.
　かご２及び釣合おもり３は、懸架体である複数本（図では１本のみ示す）の主ロープ１６により昇降路１内に吊り下げられている。 The car 2 and the counterweight 3 are suspended in the hoistway 1 by a plurality of main ropes 16 (only one is shown in the figure) which are suspension bodies.
　第２のかごガイドレール６ｂの上端部と、第２の釣合おもりガイドレール７ｂの上端部との間には、綱止め梁１７が水平に固定されている。綱止め梁１７には、かご側綱止め部（図示せず）が設けられている。釣合おもり返し車梁１１には、釣合おもり側綱止め部１８が設けられている。 The leashing beam 17 is fixed horizontally between the upper end of the second car guide rail 6b and the upper end of the second counterweight guide rail 7b. The tie-down beam 17 is provided with a cage-side tie-down portion (not shown). The counterweight return beam 11 is provided with a counterweight-side leash stopper 18.
　主ロープ１６は、かご側綱止め部に接続された第１の端部と、釣合おもり側綱止め部１８に接続された第２の端部とを有している。また、主ロープ１６は、第１の端部側から順に、第１のかご吊り車１４ａ、第２のかご吊り車１４ｂ、第１のかご返し車１２ａ、第２のかご返し車１２ｂ、エレベータ巻上機８、釣合おもり返し車１３、及び釣合おもり吊り車１５に巻き掛けられている。 The main rope 16 has a first end connected to the car-side rope stopper and a second end connected to the counterweight-side rope stopper 18. The main rope 16 is, in order from the first end side, a first car suspension wheel 14a, a second car suspension wheel 14b, a first car return wheel 12a, a second car return wheel 12b, and an elevator winding. It is wound around the upper machine 8, the counterweight wheel 13, and the counterweight suspension wheel 15.
　このように、実施の形態１のエレベータは、２：１ローピング方式のエレベータである。 Thus, the elevator according to Embodiment 1 is a 2: 1 roping elevator.
　昇降路１内の下部には、制御盤１９が設置されている。制御盤１９には、かご２の運行を制御するエレベータ制御装置が設けられている。 A control panel 19 is installed in the lower part of the hoistway 1. The control panel 19 is provided with an elevator control device that controls the operation of the car 2.
　図２は図１のエレベータ巻上機８の軸線に沿う概略の断面図である。ハウジング２１は、平板状の軸支持部２１ａと、円筒状のステータ支持部２１ｂとを有している。
ステータ支持部２１ｂは、軸支持部２１ａから一側へ突出している。軸支持部２１ａの中央には、水平な固定軸２２が支持されている。 FIG. 2 is a schematic cross-sectional view along the axis of the elevator hoisting machine 8 of FIG. The housing 21 has a flat shaft support portion 21a and a cylindrical stator support portion 21b.
The stator support portion 21b protrudes from the shaft support portion 21a to one side. A horizontal fixed shaft 22 is supported at the center of the shaft support portion 21a.
　固定軸２２には、一対の軸受２３を介して、回転体２４が回転可能に支持されている。軸受２３は、固定軸２２の軸方向に互いに間隔をおいて配置されている。回転体２４には、円筒状の駆動シーブ２４ａと、円筒状の磁石支持部２４ｂとが一体に設けられている。駆動シーブ２４ａには、主ロープ１６が巻き掛けられる。駆動シーブ２４ａの外周面には、主ロープ１６が挿入される複数のロープ溝が設けられている。 Rotating body 24 is rotatably supported on fixed shaft 22 via a pair of bearings 23. The bearings 23 are arranged at intervals in the axial direction of the fixed shaft 22. The rotating body 24 is integrally provided with a cylindrical drive sheave 24a and a cylindrical magnet support 24b. The main rope 16 is wound around the drive sheave 24a. A plurality of rope grooves into which the main rope 16 is inserted are provided on the outer peripheral surface of the drive sheave 24a.
　磁石支持部２４ｂは、回転体２４のハウジング２１側の軸方向端部に設けられている。また、磁石支持部２４ｂは、ステータ支持部２１ｂの内周面に対向している。さらに、磁石支持部２４ｂは、ステータ支持部２１ｂと同軸に配置され、ステータ支持部２１ｂにより囲繞されている。磁石支持部２４ｂの外径は、駆動シーブ２４ａの外径よりも大きい。 The magnet support 24b is provided at the axial end of the rotating body 24 on the housing 21 side. Further, the magnet support portion 24b faces the inner peripheral surface of the stator support portion 21b. Furthermore, the magnet support portion 24b is disposed coaxially with the stator support portion 21b and is surrounded by the stator support portion 21b. The outer diameter of the magnet support portion 24b is larger than the outer diameter of the drive sheave 24a.
　ステータ支持部２１ｂの内周面には、ステータ２５が固定されている。磁石支持部２４ｂの外周面には、ステータ２５に対向する複数個の永久磁石２６が周方向に互いに間隔をおいて固定されている。これらのステータ２５及び永久磁石２６により、巻上機モータ２７が構成されている。そして、巻上機モータ２７の駆動力により回転体２４が回転し、かご６及び釣合おもり７が昇降する。 The stator 25 is fixed to the inner peripheral surface of the stator support portion 21b. A plurality of permanent magnets 26 facing the stator 25 are fixed to the outer peripheral surface of the magnet support portion 24b at intervals in the circumferential direction. The stator 25 and the permanent magnet 26 constitute a hoisting machine motor 27. And the rotary body 24 rotates with the driving force of the hoisting machine motor 27, and the cage | basket | car 6 and the counterweight 7 raise / lower.
　図３は図２の磁石支持部２４ｂの内部の構成を示す正面図である。図２では省略したが、磁石支持部２４ｂの内側には、回転体２４の回転を制動する一対の巻上機ブレーキ３１が収容されている。巻上機ブレーキ３１は、互いに同様の構造を有しており、かつ互いに逆向きに配置されている。 FIG. 3 is a front view showing an internal configuration of the magnet support portion 24b of FIG. Although omitted in FIG. 2, a pair of hoisting machine brakes 31 for braking the rotation of the rotating body 24 are accommodated inside the magnet support portion 24b. The hoisting machine brakes 31 have the same structure as each other and are disposed in opposite directions.
　各巻上機ブレーキ３１は、磁石支持部２４ｂの内周面に対向している。実施の形態１の制動面２４ｃは、磁石支持部２４ｂの内周面である。磁石支持部２４ｂは、ブレーキドラムを兼ねている。 Each hoisting machine brake 31 is opposed to the inner peripheral surface of the magnet support portion 24b. The braking surface 24c of the first embodiment is the inner peripheral surface of the magnet support portion 24b. The magnet support portion 24b also serves as a brake drum.
　各巻上機ブレーキ３１は、電磁マグネット３２、可動鉄心３３、ブレーキシュー３４、及び複数の制動ばね３５を有している。 Each hoisting machine brake 31 has an electromagnetic magnet 32, a movable iron core 33, a brake shoe 34, and a plurality of braking springs 35.
　この例では、２つの巻上機ブレーキ３１の電磁マグネット３２が一体で構成されている。可動鉄心３３は、電磁マグネット３２に対して接したり離れたりする方向（図３の左右方向）へ変位可能である。また、可動鉄心３３は、電磁マグネット３２を励磁することにより、電磁マグネット３２に吸引される。 In this example, the electromagnetic magnets 32 of the two hoisting machine brakes 31 are integrally formed. The movable iron core 33 can be displaced in a direction in which it contacts or leaves the electromagnetic magnet 32 (the left-right direction in FIG. 3). The movable iron core 33 is attracted to the electromagnetic magnet 32 by exciting the electromagnetic magnet 32.
　可動鉄心３３は、平板状の可動鉄心本体と、複数の連結ピン３６とを有している。連結ピン３６は、可動鉄心本体から電磁マグネット３２とは反対側へ突出している。ブレーキシュー３４は、連結ピン３６を介して可動鉄心本体に支持されている。また、ブレーキシュー３４は、可動鉄心３３の変位により、制動位置と解除位置との間で変位可能である。制動位置は、ブレーキシュー３４が制動面２４ｃに接する位置である。解除位置は、ブレーキシュー３４が制動面２４ｃから離れて制動面２４ｃに対向する位置である。 The movable core 33 has a plate-shaped movable core body and a plurality of connecting pins 36. The connecting pin 36 protrudes from the movable core body to the side opposite to the electromagnetic magnet 32. The brake shoe 34 is supported by the movable core body via the connecting pin 36. The brake shoe 34 can be displaced between the braking position and the release position by the displacement of the movable iron core 33. The braking position is a position where the brake shoe 34 contacts the braking surface 24c. The release position is a position where the brake shoe 34 is separated from the braking surface 24c and faces the braking surface 24c.
　また、ブレーキシュー３４は、シュー本体３７とライニング３８とを有している。さらに、ブレーキシュー３４は、少なくとも一部が磁化特性に優れた磁性体、例えば機械構造用炭素鋼により構成されている。この例では、シュー本体３７全体が磁性体により構成されている。ライニング３８は、ブレーキシュー３４が制動位置にあるとき、制動面２４ｃに接する。また、ライニング３８は、ブレーキシュー３４が解除位置にあるとき、制動面２４ｃに隙間を介して対向する。 The brake shoe 34 has a shoe main body 37 and a lining 38. Furthermore, at least a part of the brake shoe 34 is made of a magnetic material having excellent magnetization characteristics, such as carbon steel for mechanical structure. In this example, the entire shoe body 37 is made of a magnetic material. The lining 38 contacts the braking surface 24c when the brake shoe 34 is in the braking position. Further, the lining 38 faces the braking surface 24c through a gap when the brake shoe 34 is in the release position.
　制動ばね３５は、電磁マグネット３２と可動鉄心３３との間に設けられている。また、制動ばね３５は、可動鉄心３３を電磁マグネット３２から離して、ブレーキシュー３４を制動面２４ｃに押し付ける。これにより、回転体２４の回転が制動、又は回転体２４の静止状態が保持される。 The brake spring 35 is provided between the electromagnetic magnet 32 and the movable iron core 33. The braking spring 35 separates the movable iron core 33 from the electromagnetic magnet 32 and presses the brake shoe 34 against the braking surface 24c. Thereby, the rotation of the rotating body 24 is braked or the stationary state of the rotating body 24 is maintained.
　図４は図３の巻上機ブレーキ３１の非制動時の状態を示す断面図、図５は図４の巻上機ブレーキ３１の制動時の状態を示す断面図である。電磁マグネット３２は、固定鉄心３９と、固定鉄心３９に埋め込まれているコイル４０とを有している。固定鉄心３９には、複数のばね収容凹部３９ａが設けられている。各ばね収容凹部３９ａには、制動ばね３５が挿入されている。 4 is a cross-sectional view showing a state when the hoisting machine brake 31 of FIG. 3 is not braked, and FIG. 5 is a cross-sectional view showing a state of the hoisting machine brake 31 of FIG. The electromagnetic magnet 32 has a fixed iron core 39 and a coil 40 embedded in the fixed iron core 39. The fixed iron core 39 is provided with a plurality of spring accommodating recesses 39a. A brake spring 35 is inserted into each spring accommodating recess 39a.
　可動鉄心３３の中央には、貫通孔３３ａが設けられている。シュー本体３７は、電磁マグネット３２側へ突出した円柱状の貫通部３７ａを有している。貫通部３７ａは、貫通孔３３ａに挿入されて可動鉄心３３を貫通している。 In the center of the movable iron core 33, a through hole 33a is provided. The shoe main body 37 has a cylindrical penetrating portion 37a protruding toward the electromagnetic magnet 32 side. The through portion 37 a is inserted into the through hole 33 a and penetrates the movable iron core 33.
　固定鉄心３９の可動鉄心３３に対向する面の中央には、シュー挿入凹部３９ｂが設けられている。ブレーキシュー３４が解除位置にあるとき、貫通部３７ａの先端は、シュー挿入凹部３９ｂに挿入されている。但し、貫通孔３３ａの端面とシュー挿入凹部３９ｂの底面との間には隙間が残されている。 In the center of the surface of the fixed iron core 39 facing the movable iron core 33, a shoe insertion recess 39b is provided. When the brake shoe 34 is in the release position, the tip of the through portion 37a is inserted into the shoe insertion recess 39b. However, a gap is left between the end face of the through hole 33a and the bottom face of the shoe insertion recess 39b.
　各連結ピン３６は、小径部３６ａと大径部３６ｂとを有している。大径部３６ｂの径は、小径部３６ａの径よりも大きい。大径部３６ｂは、小径部３６ａの可動鉄心３３とは反対側の端部に設けられている。小径部３６ａの大径部３６ｂとは反対側の端部は、可動鉄心本体に固定されている。 Each connecting pin 36 has a small diameter portion 36a and a large diameter portion 36b. The diameter of the large diameter part 36b is larger than the diameter of the small diameter part 36a. The large diameter portion 36b is provided at the end of the small diameter portion 36a opposite to the movable core 33. The end of the small diameter portion 36a opposite to the large diameter portion 36b is fixed to the movable core body.
　シュー本体３７には、複数のキャビティ３７ｂが設けられている。各大径部３６ｂは、キャビティ３７ｂ内に収容されている。また、シュー本体３７には、キャビティ３７ｂをシュー本体３７の外部空間と繋ぐ複数の繋ぎ孔３７ｃが設けられている。各繋ぎ孔３７ｃには、小径部３６ａが通されている。 The shoe body 37 is provided with a plurality of cavities 37b. Each large diameter part 36b is accommodated in the cavity 37b. The shoe body 37 is provided with a plurality of connecting holes 37 c that connect the cavity 37 b to the external space of the shoe body 37. A small diameter portion 36a is passed through each connecting hole 37c.
　繋ぎ孔３７ｃの内径は、キャビティ３７ｂの内径及び大径部３６ｂの外径よりも小さい。これにより、連結ピン３６のブレーキシュー３４からの抜けが防止されている。 The inner diameter of the connecting hole 37c is smaller than the inner diameter of the cavity 37b and the outer diameter of the large diameter portion 36b. This prevents the connecting pin 36 from coming off the brake shoe 34.
　また、可動鉄心３３の変位方向へのキャビティ３７ｂの寸法は、同方向への大径部３６ｂの寸法よりも大きい。これにより、ブレーキシュー３４は、可動鉄心３３に対して、可動鉄心３３の変位方向へ変位可能になっている。 Moreover, the dimension of the cavity 37b in the displacement direction of the movable iron core 33 is larger than the dimension of the large-diameter portion 36b in the same direction. Thereby, the brake shoe 34 can be displaced in the displacement direction of the movable iron core 33 with respect to the movable iron core 33.
　可動鉄心３３とブレーキシュー３４との間には、弾性部材としての複数の遊びばね４１が設けられている。この例では、各遊びばね４１は、大径部３６ｂの小径部３６ａとは反対側の端面と、その端面に対向するキャビティ３７ｂの内面との間に設けられている。また、全ての遊びばね４１は、サイズ及びばね係数が等しい圧縮ばねである。 A plurality of play springs 41 as elastic members are provided between the movable iron core 33 and the brake shoe 34. In this example, each play spring 41 is provided between the end surface of the large-diameter portion 36b opposite to the small-diameter portion 36a and the inner surface of the cavity 37b facing the end surface. All the free springs 41 are compression springs having the same size and the same spring coefficient.
　かご２の走行時には、電磁マグネット３２が励磁され、可動鉄心３３が制動ばね３５に抗して電磁マグネット３２に吸着される。これにより、ブレーキシュー３４が解除位置に変位する。ブレーキシュー３４が解除位置にあるとき、ライニング３８は制動面２４ｃから離れ、貫通部３７ａの先端はシュー挿入凹部３９ｂに挿入される。また、遊びばね４１は、電磁マグネット３２の吸引力により、シュー本体３７と連結ピン３６との間で圧縮される。 When the car 2 is traveling, the electromagnetic magnet 32 is excited, and the movable iron core 33 is attracted to the electromagnetic magnet 32 against the braking spring 35. As a result, the brake shoe 34 is displaced to the release position. When the brake shoe 34 is in the release position, the lining 38 is separated from the braking surface 24c, and the tip of the penetrating portion 37a is inserted into the shoe insertion recess 39b. Further, the idle spring 41 is compressed between the shoe main body 37 and the connecting pin 36 by the attractive force of the electromagnetic magnet 32.
　かご２の停止時には、電磁マグネット３２への通電が遮断され、制動ばね３５により、可動鉄心３３が電磁マグネット３２から離される。これにより、ブレーキシュー３４が制動位置に変位する。ブレーキシュー３４が制動位置にあるとき、ライニング３８は制動面２４ｃに押し付けられており、貫通部３７ａの先端はシュー挿入凹部３９ｂから引き抜かれている。また、遊びばね４１は、制動ばね３５のばね力により、シュー本体３７と連結ピン３６との間で圧縮される。 When the car 2 is stopped, the energization of the electromagnetic magnet 32 is cut off, and the movable iron core 33 is separated from the electromagnetic magnet 32 by the braking spring 35. As a result, the brake shoe 34 is displaced to the braking position. When the brake shoe 34 is in the braking position, the lining 38 is pressed against the braking surface 24c, and the tip of the penetrating portion 37a is pulled out from the shoe insertion recess 39b. The play spring 41 is compressed between the shoe main body 37 and the connecting pin 36 by the spring force of the brake spring 35.
　ここで、非制動時、即ち制動力解除時に電磁マグネット３２によりブレーキシュー３４を吸引する力Ｆ１は、制動時、即ちブレーキシュー落下時に制動ばね３５によりブレーキシュー３４を制動面２４ｃに押し付ける力Ｆ２よりも大きく設定されている。これにより、ブレーキシュー３４が解除位置にあるときの遊びばね４１の圧縮量は、ブレーキシュー３４が制動位置にあるときの遊びばね４１の圧縮量よりも大きい。 Here, the force F1 for attracting the brake shoe 34 by the electromagnetic magnet 32 when braking is not performed, that is, when the braking force is released, is based on the force F2 that presses the brake shoe 34 against the braking surface 24c by the braking spring 35 when braking, that is, when the brake shoe is dropped. Is also set larger. Thereby, the compression amount of the idle spring 41 when the brake shoe 34 is in the release position is larger than the compression amount of the idle spring 41 when the brake shoe 34 is in the braking position.
　なお、遊びばね４１の圧縮量とは、遊びばね４１にかかる力に依存する量のことであり、例えば、伸縮方向における遊びばね４１の伸縮距離である。 Note that the compression amount of the play spring 41 is an amount that depends on the force applied to the play spring 41, and is, for example, the extension / contraction distance of the play spring 41 in the extension / contraction direction.
　このため、非制動時のブレーキシュー３４と制動面２４ｃとの間の隙間寸法ｇ１（図４）は、制動時の電磁マグネット３２と可動鉄心３３との間の隙間寸法ｇ２（図５）よりも大きい。逆に言うと、制動時の電磁マグネット３２と可動鉄心３３との間の隙間寸法ｇ２は、非制動時のブレーキシュー３４と制動面２４ｃとの間の隙間寸法ｇ１よりも小さい。 Therefore, the gap dimension g1 (FIG. 4) between the brake shoe 34 and the braking surface 24c during non-braking is larger than the gap dimension g2 (FIG. 5) between the electromagnetic magnet 32 and the movable iron core 33 during braking. large. In other words, the gap dimension g2 between the electromagnetic magnet 32 and the movable iron core 33 during braking is smaller than the gap dimension g1 between the brake shoe 34 and the braking surface 24c during non-braking.
　このような巻上機ブレーキ３１及びそれを用いたエレベータ巻上機８では、可動鉄心３３とブレーキシュー３４との間に遊びばね４１が設けられており、ブレーキシュー３４が解除位置にあるときの遊びばね４１の圧縮量が、ブレーキシュー３４が制動位置にあるときの遊びばね４１の圧縮量よりも大きい。 In the hoisting machine brake 31 and the elevator hoisting machine 8 using the hoisting machine brake 31, the play spring 41 is provided between the movable iron core 33 and the brake shoe 34, and the brake shoe 34 is in the release position. The compression amount of the play spring 41 is larger than the compression amount of the play spring 41 when the brake shoe 34 is in the braking position.
　このため、上記の隙間寸法ｇ１と隙間寸法ｇ２とを厳密に調整することなく、ｇ１＞ｇ２の関係とすることができる。これにより、隙間寸法ｇ２を小さくして、電磁マグネット３２に要求される吸引能力を抑えつつ、可動鉄心３３が電磁マグネット３２に衝突する際の騒音を低減することができる。また、隙間寸法ｇ１を大きくして、非制動時にライニング３８をより確実に制動面２４ｃから離し、いわゆる引き摺りを防止することができる。 Therefore, the relationship of g1> g2 can be established without strictly adjusting the gap dimension g1 and the gap dimension g2. As a result, it is possible to reduce the noise when the movable iron core 33 collides with the electromagnetic magnet 32 while reducing the gap size g <b> 2 and suppressing the suction capability required for the electromagnetic magnet 32. Further, the gap dimension g1 can be increased so that the lining 38 can be more reliably separated from the braking surface 24c during non-braking, thereby preventing so-called dragging.
　従って、制動時に電磁マグネット３２と可動鉄心３３との間に生じる隙間、及び非制動時にブレーキシュー３４と制動面２４ｃとの間に生じる隙間の管理を容易にすることができる。 Therefore, it is possible to easily manage the gap generated between the electromagnetic magnet 32 and the movable iron core 33 during braking and the gap generated between the brake shoe 34 and the braking surface 24c during non-braking.
　また、磁性体からなるシュー本体３７に、可動鉄心３３を貫通する貫通部３７ａを設けたので、より簡単に、ブレーキシュー３４に対する電磁マグネット３２の吸引力Ｆ１を、制動ばね３５による押し付け力Ｆ２よりも大きくすることができる。 In addition, since the shoe main body 37 made of a magnetic material is provided with the penetrating portion 37a penetrating the movable iron core 33, the suction force F1 of the electromagnetic magnet 32 against the brake shoe 34 can be more easily expressed by the pressing force F2 by the brake spring 35. Can also be increased.
　さらに、電磁マグネット３２による吸引力Ｆ１を、制動ばね３５による押し付け力Ｆ２よりも大きくしたので、より確実に、隙間寸法ｇ１を隙間寸法ｇ２よりも大きくすることができる。 Furthermore, since the attractive force F1 by the electromagnetic magnet 32 is made larger than the pressing force F2 by the brake spring 35, the gap dimension g1 can be made larger than the gap dimension g2.
　なお、上記の例では、シュー本体３７全体を磁性体で構成したが、貫通部３７ａのみ磁性体で構成してもよい。 In the above example, the entire shoe main body 37 is made of a magnetic material, but only the penetrating portion 37a may be made of a magnetic material.
　実施の形態２．
　次に、図６はこの発明の実施の形態２による巻上機ブレーキ３１を示す側面図、図７は図６の巻上機ブレーキ３１の非制動時の状態を示す断面図、図８は図７の巻上機ブレーキ３１の制動時の状態を示す断面図である。但し、基本的な構成は実施の形態１の巻上機ブレーキ３１と同様であり、実施の形態１の巻上機ブレーキ３１の各部に対応する部分には実施の形態１と同一の符号を付している。 Embodiment 2. FIG.
Next, FIG. 6 is a side view showing a hoisting machine brake 31 according to Embodiment 2 of the present invention, FIG. 7 is a cross-sectional view showing a state when the hoisting machine brake 31 of FIG. 6 is not braked, and FIG. It is sectional drawing which shows the state at the time of braking of the hoisting machine brake 31 of FIG. However, the basic configuration is the same as that of the hoisting machine brake 31 of the first embodiment, and parts corresponding to the respective parts of the hoisting machine brake 31 of the first embodiment are denoted by the same reference numerals as in the first embodiment. is doing.
　実施の形態２では、一対の巻上機ブレーキ３１が回転体２４の外側に配置されている。また、磁石支持部２４ｂは、ステータ支持部２１ｂの径方向外側に配置されている。そして、ステータ２５がステータ支持部２１ｂの外周面に固定されており、永久磁石２６が磁石支持部２４ｂの内周面に固定されている。 In the second embodiment, a pair of hoisting machine brakes 31 are arranged outside the rotating body 24. Moreover, the magnet support part 24b is arrange | positioned at the radial direction outer side of the stator support part 21b. And the stator 25 is being fixed to the outer peripheral surface of the stator support part 21b, and the permanent magnet 26 is being fixed to the internal peripheral surface of the magnet support part 24b.
　また、実施の形態２の制動面２４ｃは、磁石支持部２４ｂの外周面である。即ち、ブレーキシュー３４を磁石支持部２４ｂの外側から外周面に押し当てることにより、回転体２４の回転が制動、又は回転体２４の静止状態が保持される。他の構成は、実施の形態１と同様である。 Further, the braking surface 24c of the second embodiment is an outer peripheral surface of the magnet support portion 24b. That is, by pressing the brake shoe 34 against the outer peripheral surface from the outside of the magnet support portion 24b, the rotation of the rotating body 24 is braked or the stationary state of the rotating body 24 is maintained. Other configurations are the same as those in the first embodiment.
　このように、回転体２４の外周面を制動面２４ｃとするタイプの巻上機ブレーキ３１であっても、実施の形態１と同様の効果を得ることができる。 Thus, even with the hoisting machine brake 31 of the type in which the outer peripheral surface of the rotating body 24 is the braking surface 24c, the same effect as in the first embodiment can be obtained.
　実施の形態３．
　次に、図９はこの発明の実施の形態３による巻上機ブレーキ３１を示す断面図である。実施の形態１、２では、シュー本体３７に貫通部３７ａが設けられているが、実施の形態３では、固定鉄心３９に貫通部３９ｃが設けられている。他の構成は、実施の形態１と同様である。 Embodiment 3 FIG.
Next, FIG. 9 is a sectional view showing a hoisting machine brake 31 according to Embodiment 3 of the present invention. In the first and second embodiments, the shoe main body 37 is provided with the penetrating portion 37a, but in the third embodiment, the fixed iron core 39 is provided with the penetrating portion 39c. Other configurations are the same as those in the first embodiment.
　このように、固定鉄心３９に貫通部３９ｃを設けても、実施の形態１と同様の効果を得ることができる。 As described above, even when the through-hole 39c is provided in the fixed iron core 39, the same effect as in the first embodiment can be obtained.
　なお、上記の例では、弾性部材として遊びばね４１を示したが、遊びばね４１としては、例えばコイルばね、皿ばね又は板ばねを用いることができる。
　また、弾性部材は、ばねに限定されるものではなく、例えば、ゴム片又は軟性プラスチック片であってもよい。
　さらに、上記の例では、エレベータ巻上機８に２つの巻上機ブレーキ３１を配置したが、１つ又は３つ以上であってもよい。
　さらにまた、エレベータ全体の機器のレイアウト及びローピング方式等は、図１の例に限定されるものではない。
　また、懸架体はベルトであってもよい。
　さらに、この発明は、機械室を持つエレベータ、ダブルデッキエレベータ、又はワンシャフトマルチカー方式のエレベータなど、種々のタイプのエレベータに適用できる。ワンシャフトマルチカー方式は、上かごと、上かごの真下に配置された下かごとが、それぞれ独立して共通の昇降路を昇降する方式である。 In the above example, the play spring 41 is shown as the elastic member. However, as the play spring 41, for example, a coil spring, a disc spring, or a leaf spring can be used.
The elastic member is not limited to a spring, and may be, for example, a rubber piece or a soft plastic piece.
Further, in the above example, the two hoisting machine brakes 31 are arranged in the elevator hoisting machine 8, but one or three or more may be used.
Furthermore, the layout and roping method of the elevator as a whole are not limited to the example of FIG.
Further, the suspension body may be a belt.
Furthermore, the present invention can be applied to various types of elevators such as an elevator having a machine room, a double deck elevator, or a one-shaft multi-car elevator. The one-shaft multi-car system is a system in which the upper car and the lower car arranged directly below the upper car are independently raised and lowered on a common hoistway.
　２４ａ　駆動シーブ、２７　巻上機モータ、３１　巻上機ブレーキ、３２　電磁マグネット、３３　可動鉄心、３４　ブレーキシュー、３５　制動ばね、３７ａ，３９ｃ　貫通部、４１　遊びばね（弾性部材）。 24a drive sheave, 27 hoisting machine motor, 31 hoisting machine brake, 32 electromagnetic magnet, 33 moving iron core, 34 brake shoe, 35 braking spring, 37a, 39c penetrating part, 41 play spring (elastic member).

Claims (4)

  1. 　電磁マグネット、
    　前記電磁マグネットに対して変位可能であり、前記電磁マグネットに吸引される可動鉄心、
    　前記可動鉄心に支持されており、かつ、前記可動鉄心の変位により、制動面に接する制動位置と前記制動面から離れる解除位置との間で変位可能なブレーキシュー、
    　前記可動鉄心を前記電磁マグネットから離して前記ブレーキシューを前記制動面に押し付ける制動ばね、及び
    　前記可動鉄心と前記ブレーキシューとの間に設けられている弾性部材
    　を備え、
    　前記ブレーキシューが解除位置にあるときの前記弾性部材の圧縮量が、前記ブレーキシューが制動位置にあるときの前記弾性部材の圧縮量よりも大きいエレベータの巻上機ブレーキ。     Electromagnetic magnet,
    A movable iron core that is displaceable with respect to the electromagnetic magnet and is attracted to the electromagnetic magnet;
    A brake shoe supported by the movable core and displaceable between a braking position contacting the braking surface and a release position separating from the braking surface by displacement of the movable core;
    A braking spring that separates the movable iron core from the electromagnetic magnet and presses the brake shoe against the braking surface; and an elastic member provided between the movable iron core and the brake shoe.
    An elevator hoisting brake for an elevator in which a compression amount of the elastic member when the brake shoe is in a release position is larger than a compression amount of the elastic member when the brake shoe is in a braking position.
  2. 　前記ブレーキシュー及び前記電磁マグネットの少なくともいずれか一方は、前記可動鉄心を貫通する貫通部を有している請求項１記載のエレベータの巻上機ブレーキ。 2. The elevator hoisting machine brake according to claim 1, wherein at least one of the brake shoe and the electromagnetic magnet has a penetrating portion penetrating the movable iron core.
  3. 　非制動時に前記電磁マグネットにより前記ブレーキシューを吸引する力が、制動時に前記制動ばねにより前記ブレーキシューを前記制動面に押し付ける力よりも大きい請求項１又は請求項２に記載のエレベータの巻上機ブレーキ。 The elevator hoisting machine according to claim 1 or 2, wherein a force for attracting the brake shoe by the electromagnetic magnet during non-braking is larger than a force for pressing the brake shoe against the braking surface by the braking spring during braking. brake.
  4. 　駆動シーブ、
    　前記駆動シーブを回転させる巻上機モータ、及び
    　請求項１から請求項３までのいずれか１項に記載の巻上機ブレーキ
    　を備えているエレベータ巻上機。     Driving sheave,
    An elevator hoisting machine comprising: a hoisting machine motor that rotates the drive sheave; and a hoisting machine brake according to any one of claims 1 to 3.
PCT/JP2017/015446 2017-04-17 2017-04-17 Elevator hoist brake and elevator hoist WO2018193494A1 (en)

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CN109989878B (en) * 2019-04-28 2023-08-25 福州大学 Impeller unbalance compensation device and method for electromagnetic wind driven generator
CN114630971A (en) * 2019-11-13 2022-06-14 三菱电机株式会社 Electromagnetic brake
CN114630971B (en) * 2019-11-13 2023-07-25 三菱电机株式会社 Electromagnetic brake

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