JP5315107B2 - Brake device for elevator - Google Patents

Brake device for elevator Download PDF

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JP5315107B2
JP5315107B2 JP2009078005A JP2009078005A JP5315107B2 JP 5315107 B2 JP5315107 B2 JP 5315107B2 JP 2009078005 A JP2009078005 A JP 2009078005A JP 2009078005 A JP2009078005 A JP 2009078005A JP 5315107 B2 JP5315107 B2 JP 5315107B2
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brake
braking
string
arm
drive
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JP2010228863A (en
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正信 伊藤
章智 五十嵐
清弥 伊藤
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Hitachi Ltd
Mito Engineering Service Co Ltd
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Mito Engineering Service Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a brake device for an elevator, a hoisting machine and an elevator device allowing reduction of collision sound when releasing the brake and applying the brake, miniaturization of driving means for performing brake releasing and brake applying operations, a remote control operation for releasing the brake by installing a motor at a remote position and arrangement of the driving motor at a position easy for performing a maintenance inspection. <P>SOLUTION: This brake device 4 includes an electric motor 3, a brake drum 9, a brake piece 10, a brake arm 11, a brake spring 12 and the driving means 17a/17b. The driving means 17a/17b includes a string body 15, a rotary type driving motor 13a/13b, and a driving circuit 16. By driving the string body 15 by the driving motor 13a/13b, the brake arm 11 is driven. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

本発明は、ブレーキドラムに対して制動片をばねで押圧して制動力を付加し、駆動モータによって紐状体を介して制動片ブレーキドラムから離間させ制動力を解除するエレベーター用ブレーキ装置に関する。   The present invention relates to an elevator brake device that applies a braking force by pressing a braking piece against a brake drum with a spring and releases the braking force by being separated from the braking piece brake drum via a string by a drive motor.

従来から、ブレーキドラムに対して制動片を押圧して制動力を付加し、駆動手段でこの押圧を解除して制動力を解除するエレベーター用ブレーキ装置はよく知られている。この種のブレーキ装置においては、制動付加は制動ばねが用いられ、制動解除はこのばね力に対抗する電磁石が用いられる(例えば、特許文献1参照)。また、電磁石の励磁電流を制御して、ブレーキの開閉動作音を低減する方法が提案されている(例えば、特許文献2参照)。また制動解除手段として歯車機構とサーボモータで構成されるものが提案されている(例えば、特許文献3参照)。また、エレベーターの異常停止時にケーブルでブレーキを手動開放する方法が提案されている(例えば、特許文献4参照)。   2. Description of the Related Art Conventionally, an elevator brake device that presses a braking piece against a brake drum to apply a braking force and releases the pressing force by a driving unit to release the braking force is well known. In this type of brake device, a braking spring is used for braking and an electromagnet is used for releasing the braking (see, for example, Patent Document 1). In addition, a method has been proposed in which the excitation current of the brake is reduced by controlling the excitation current of the electromagnet (see, for example, Patent Document 2). In addition, a brake release unit that includes a gear mechanism and a servo motor has been proposed (see, for example, Patent Document 3). In addition, a method has been proposed in which a brake is manually released with a cable when the elevator stops abnormally (see, for example, Patent Document 4).

特開2006−266362号公報JP 2006-266362 A 特開平09−267982号公報Japanese Patent Application Laid-Open No. 09-267982 特開平06−211472号公報Japanese Patent Laid-Open No. 06-21472 特開2001−322781号公報JP 2001-322781 A

上記特許文献1に提案されたエレベーター用ブレーキ装置は、ブレーキドラムをばね力で押圧して制動力を付加し、電磁石のコイルに電流を供給してばね力に抗し電磁吸引して、ブレーキドラムの押圧を開放し制動解除する。   The elevator brake device proposed in Patent Document 1 applies a braking force by pressing the brake drum with a spring force, supplies a current to the coil of the electromagnet, and performs electromagnetic attraction against the spring force. Release the pressure and release the brake.

通常、制動解除,制動付加動作は電磁石のコイルへの供給電源の通電,遮断で行われる。通電(制動解除動作)により電磁コイルに電流が流れ始めると、電磁石と可動片との空隙はコイル電流の供給開始時点からゆっくり狭くなる。この時、コイル電流による発生磁束は、ギャップの2乗に反比例して増加するので、電磁石への可動片の接近途中から急激に空隙が狭くなり、電磁石と可動片は瞬時に接触する。   Usually, the braking release and braking addition operations are performed by turning on and off the power supply to the coil of the electromagnet. When current starts to flow through the electromagnetic coil due to energization (braking release operation), the gap between the electromagnet and the movable piece is gradually narrowed from the start of supplying the coil current. At this time, since the magnetic flux generated by the coil current increases in inverse proportion to the square of the gap, the gap suddenly narrows in the middle of the approach of the movable piece to the electromagnet, and the electromagnet and the movable piece come into contact instantaneously.

制動解除状態を維持し、その後、通電遮断(制動付加動作)により電流値を零にすると、コイル電流が所定の時定数で減少することから、電磁石と可動片との空隙はゆっくりと開き始めるが、制動解除時とは逆に電磁石から可動片が離れる途中から急激に空隙が開くので、この急激な動作により制動片がブレーキドラムに急激に押圧される。   If the brake release state is maintained and then the current value is made zero by turning off the power supply (braking addition operation), the coil current decreases with a predetermined time constant, so the gap between the electromagnet and the movable piece begins to open slowly. Contrary to when the brake is released, the gap is suddenly opened in the middle of the separation of the movable piece from the electromagnet, so that the braking piece is suddenly pressed against the brake drum by this sudden action.

このように、制動解除時及び制動付加時において、制動片が急動作すると、可動片の電磁石側への衝突音及び制動片のブレーキドラムへの衝突音が大きくなり、乗かご内の乗客に不快感を与えることになる。   As described above, when the braking piece suddenly operates at the time of releasing the brake and applying the braking, the collision noise of the movable piece to the electromagnet side and the collision noise of the braking piece to the brake drum increase, which is inconvenient for passengers in the car. It gives a pleasant feeling.

電磁石は空隙対電磁吸引力の関係が一般に負特性で励磁電流による電磁吸引力の制御が困難、すなわち、励磁電流で空隙の制御が困難である。したがって、上記のように制動解除時及び制動付加時の衝突音が大きく、制御して衝突音を小さくすることが難しい。   Electromagnets generally have a negative relationship between the air gap and the electromagnetic attractive force, and it is difficult to control the electromagnetic attractive force by the exciting current, that is, it is difficult to control the air gap by the exciting current. Therefore, as described above, the collision sound when releasing the brake and applying the brake is large, and it is difficult to control and reduce the collision sound.

特に、最近は昇降路上部の機械室を省略して巻上機自体を昇降路内に設置するようになったために、一層、ブレーキ衝突音が乗かご内騒音として顕著に現れる結果となっている。そこで、このような制動解除及び付加時の衝突音を抑制するために、従来のコイル電流制御(特許文献2の図2参照)においては、最初に制動解除指令を受けると、コイル電流の指令値としてランプ状(漸増パターン)の電流指令を出力し、コイル電流を漸増させることにより可動片に作用する吸引力を漸増させている。しかし、前述のように励磁電流で空隙の制御が困難なばかりでなく、約1秒以下のブレーキ開閉動作を要求される速い可動片の動きの制御は難しく、衝突音の十分な低減効果は得られない問題点がある。   In particular, because the machine room at the top of the hoistway has been omitted and the hoisting machine itself has been installed in the hoistway, the brake collision sound has become more prominent as car interior noise. . Therefore, in order to suppress such a collision noise at the time of brake release and addition, in conventional coil current control (see FIG. 2 of Patent Document 2), when a brake release command is first received, the command value of the coil current is set. A ramp-like (gradual increase pattern) current command is output, and the suction force acting on the movable piece is gradually increased by gradually increasing the coil current. However, as described above, it is difficult to control the air gap with the excitation current, and it is difficult to control the movement of the fast movable piece that requires a brake opening / closing operation of about 1 second or less, and the effect of sufficiently reducing the collision noise is obtained. There is a problem that can not be.

また、制動解除時、制動ばね力に対抗する力を出すために梃子などの減速機構を用いて電磁石の小型化を図るが、一般に電磁石の有効動作ストロークは小さいので大きな減速比の減速機構が用いられず、電磁石つまり駆動手段の更なる小型化ができない問題がある。さらに、アクチュエーターや電磁石は比較的大型であり、これらを用いた場合、装置自体が大型化し、装置の小型化が難しいという問題もある。   In addition, when releasing the brake, to reduce the size of the electromagnet by using a reduction mechanism such as an insulator in order to produce a force that counteracts the braking spring force, the reduction mechanism with a large reduction ratio is generally used because the effective operating stroke of the electromagnet is small. Therefore, there is a problem that the electromagnet, that is, the driving means cannot be further reduced in size. Furthermore, actuators and electromagnets are relatively large, and when these are used, there is also a problem that the apparatus itself becomes large and it is difficult to downsize the apparatus.

また、特許文献3は制動解除手段として歯車機構とサーボモータで一体的に構成されるもので、モータを離れた位置に設置して制動解除を遠隔作動ができないこと、及び駆動モータであるサーボモータが巻上機と一体的に設けられるので、昇降路内で保守点検が容易な位置に配置できない問題点がある。   Further, Patent Document 3 is configured integrally with a gear mechanism and a servo motor as a brake release means, and it is impossible to remotely operate the brake release by installing the motor at a remote position, and a servo motor which is a drive motor Is provided integrally with the hoisting machine, so that there is a problem that it cannot be arranged at a position where maintenance inspection is easy in the hoistway.

また、特許文献4の提案はケーブルを用いて手動で制動力を開放するものであり、モータなどの駆動手段で回転変位を制御して制動力開放をするものではない。   Further, the proposal of Patent Document 4 is to manually release the braking force using a cable, and does not release the braking force by controlling the rotational displacement by a driving means such as a motor.

本発明の目的は、制動解除及び制動付加時の衝突音を低減できるエレベーター用ブレーキ装置,巻上機,エレベーター装置を提供することにある。また、他の目的として、制動解除及び制動付加動作させる駆動手段を小型化することも可能なエレベーター用ブレーキ装置,巻上機,エレベーター装置を提案するものである。さらに他の目的として、エレベーター用ブレーキ装置に用いられるモータを離れた位置に設置して制動解除の遠隔作動することも可能で、また、駆動モータの保守点検が容易な位置に配置することも可能なエレベーター用ブレーキ装置,巻上機,エレベーター装置を提案するものである。   An object of the present invention is to provide an elevator brake device, a hoisting machine, and an elevator device that can reduce collision noise when braking is released and braking is applied. Another object of the present invention is to propose an elevator brake device, a hoisting machine, and an elevator device that can reduce the size of the driving means for releasing and applying braking. For other purposes, it is possible to remotely operate the brake release by installing the motor used in the elevator brake device at a remote position, and it is also possible to arrange the drive motor at a position where maintenance inspection is easy The elevator brake device, hoisting machine, and elevator device are proposed.

前記目的を達成するために、本発明にかかるエレベーター用ブレーキ装置は、電動機と、前記電動機に設けられたブレーキドラムと、前記ブレーキドラムに対向配置された制動片と、前記制動片を支持する制動腕と、前記制動片を前記ブレーキドラムに押圧する制動ばねと、前記制動ばねの付勢力に抗して前記制動片を前記ブレーキドラムから離間させて制動を解除する駆動手段とを備えた巻上機のエレベーター用ブレーキ装置において、前記駆動手段は紐状体と、回転型の駆動モータと、この駆動モータを駆動し制御する駆動回路とを備え、前記紐状体の一端側を前記制動腕もしくは前記巻上機の基台あるいは昇降路の固定部に結合し、前記紐状体の他端側をそらせプーリを介して前記駆動モータで駆動して前記制動腕を駆動するようにしたことを特徴とする。 In order to achieve the above object, an elevator brake device according to the present invention includes an electric motor, a brake drum provided in the electric motor, a brake piece disposed opposite to the brake drum, and a brake that supports the brake piece. A hoisting device comprising: an arm; a brake spring that presses the brake piece against the brake drum; and a drive unit that releases the brake by separating the brake piece from the brake drum against an urging force of the brake spring. In the elevator brake device of the machine, the drive means includes a string-like body, a rotary drive motor, and a drive circuit that drives and controls the drive motor, and one end side of the string-like body is connected to the braking arm or the base of the hoisting machine or attached to a fixed portion of the hoistway, and driven by the drive motor via a pulley deflects the other end of the string-like body so as to drive the braking arm It is characterized in.

本発明によれば、制動解除及び制動付加時の衝突音を低減できる。また、制動解除及び制動付加動作させる駆動手段を小型化すること、あるいは制動解除を遠隔作動すること、そして、駆動モータの保守点検が容易な位置に配置することも可能とする形態を取ることもできる。   According to the present invention, it is possible to reduce a collision sound when braking is released and braking is applied. Also, it is possible to reduce the size of the driving means for performing the brake release and brake addition operations, or to remotely operate the brake release, and to take a form that allows the drive motor to be arranged at a position where maintenance and inspection can be easily performed. it can.

本発明の実施例1であるエレベーター用外拡ブレーキ装置を備える巻上機及びエレベーター装置の概略構成説明図である。BRIEF DESCRIPTION OF THE DRAWINGS It is schematic structure explanatory drawing of a hoisting machine provided with the external expansion brake apparatus for elevators which is Example 1 of this invention, and an elevator apparatus. 図1の巻上機を設置したエレベーター昇降路の正面図である。It is a front view of the elevator hoistway which installed the hoisting machine of FIG. 図2における巻上機を設置したエレベーター昇降路の側面図である。It is a side view of the elevator hoistway which installed the hoisting machine in FIG. 図1の駆動手段の駆動モータの駆動回路図である。It is a drive circuit diagram of the drive motor of the drive means of FIG. 図4の駆動モータの動作の時間変化を示す図である。It is a figure which shows the time change of operation | movement of the drive motor of FIG. 図1のブレーキ装置で駆動モータを昇降路の固定部に設けた例を示す要部拡大図である。It is a principal part enlarged view which shows the example which provided the drive motor in the fixing | fixed part of the hoistway with the brake device of FIG. 内拡ブレーキ装置を備える巻上機及びエレベーター装置の図1相当図である。FIG. 2 is a view corresponding to FIG. 1 of a hoisting machine and an elevator apparatus including an inner expansion brake device. 図1の外拡ブレーキ装置でそらせプーリを用いて駆動モータの設置位置を変更した例を説明するための要部拡大図である。It is a principal part enlarged view for demonstrating the example which changed the installation position of the drive motor using the deflecting pulley with the external expansion brake apparatus of FIG. 内拡ブレーキ装置における図8相当図である。FIG. 9 is a view corresponding to FIG. 8 in the internal expansion brake device. そらせプーリを用いて制動腕を減速駆動する図1の外拡ブレーキ、図7の内拡ブレーキの一方側のブレーキ装置を併記して示す要部拡大図である。FIG. 8 is an enlarged view of a main part of the outer expansion brake of FIG. 1 and a brake device on one side of the inner expansion brake of FIG. 本発明の実施例2のエレベーター用ブレーキ装置の要部拡大図である。It is a principal part enlarged view of the brake device for elevators of Example 2 of this invention. 本発明の実施例2の他の形態を示した要部拡大図である。It is the principal part enlarged view which showed the other form of Example 2 of this invention. 本発明の実施例3のエレベーター用ブレーキ装置の要部拡大図である。It is a principal part enlarged view of the brake device for elevators of Example 3 of this invention. 本発明の実施例3の他の形態を示した要部拡大図である。It is the principal part enlarged view which showed the other form of Example 3 of this invention. 本発明の実施例3のさらに他の形態を示した要部拡大図である。It is the principal part enlarged view which showed the further another form of Example 3 of this invention. 本発明の実施例4のエレベーター用ブレーキ装置の要部拡大図である。It is a principal part enlarged view of the brake device for elevators of Example 4 of this invention. 本発明の実施例4の他の形態を示した要部拡大図である。It is the principal part enlarged view which showed the other form of Example 4 of this invention. 本発明の実施例4のさらに他の形態を示した要部拡大図である。It is the principal part enlarged view which showed the further another form of Example 4 of this invention. 本発明の実施例5のエレベーター用ブレーキ装置の要部拡大図である。It is a principal part enlarged view of the brake device for elevators of Example 5 of this invention. 本発明の実施例5の他の形態を示した要部拡大図である。It is the principal part enlarged view which showed the other form of Example 5 of this invention.

以下、図面を用いて本発明の実施例について詳しく説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図1は、実施例1であるエレベーター用外拡ブレーキ装置を備える巻上機及びエレベーター装置の概略構成説明図、図2は図1の巻上機を設置したエレベーター昇降路の正面図、図3は図2における巻上機を設置したエレベーター昇降路の側面図である。   FIG. 1 is a schematic diagram illustrating the configuration of a hoisting machine and an elevator apparatus provided with an elevator externally expanding brake device according to the first embodiment, FIG. 2 is a front view of an elevator hoistway in which the hoisting machine of FIG. 1 is installed, and FIG. FIG. 3 is a side view of an elevator hoistway in which the hoisting machine in FIG. 2 is installed.

図1乃至図3において、巻上機1には、基台2に電動機3と一対のブレーキ装置4が設置されている。駆動シーブ5は電動機3の回転体に設けられ、この駆動シーブ5に巻き掛けられる主ロープ6の一方側に乗かご7が、他方側につり合おもり8がつるべ式に吊り持ちされており、この駆動シーブ5が電動機3で駆動されて乗かご7及びつり合おもり8が昇降運転される。被制動体としてのブレーキドラム9は電動機3の回転体に設けられている。このブレーキドラム9の外周面の制動面9aには一対の制動片10が当接するようになっている。一対の制動腕11は、制動片10を中間部11cに備え、一端部11aを支点として可回転的に支持されている。制動ばね12は、制動片10が制動面9aに押圧力を付加するように制動腕11の他端部11bに配置される。すなわち、この実施例はブレーキドラム9の外周面を押圧して制動付加し、制動片10を外方向に拡げて制動解除する外拡ブレーキで、制動片10,制動腕11,制動ばね12を一組とする制動付加機構として独立に機能する二組のブレーキ装置4がブレーキドラム9に対して左右に備わっている。   1 to 3, the hoisting machine 1 is provided with an electric motor 3 and a pair of brake devices 4 on a base 2. The drive sheave 5 is provided on a rotating body of the electric motor 3, and a car 7 is suspended on one side of a main rope 6 wound around the drive sheave 5, and a counterweight 8 is suspended on the other side. The driving sheave 5 is driven by the electric motor 3 so that the car 7 and the counterweight 8 are moved up and down. A brake drum 9 as a body to be braked is provided on the rotating body of the electric motor 3. A pair of braking pieces 10 abut on the braking surface 9 a on the outer peripheral surface of the brake drum 9. The pair of braking arms 11 includes a braking piece 10 in the intermediate portion 11c and is rotatably supported with the one end portion 11a as a fulcrum. The braking spring 12 is disposed at the other end portion 11b of the braking arm 11 so that the braking piece 10 applies a pressing force to the braking surface 9a. That is, this embodiment is an externally extended brake that presses the outer peripheral surface of the brake drum 9 to apply a brake and expands the brake piece 10 outward to release the brake. The brake piece 10, the brake arm 11, and the brake spring 12 are connected together. Two sets of brake devices 4 that function independently as a set of braking addition mechanisms are provided on the left and right of the brake drum 9.

制動腕11の他端部11b近辺の基台2に設けられた駆動モータ13a,13bは回転体に駆動プーリ14を備えた例えば直流モータ,ステッピングモータ,同期モータなど電流又はパルス又は周波数で回転制御できる回転型の駆動モータである。紐状体15は例えば小径のワイヤロープ,チェーンなどで構成されるものであり、この紐状体15の一端側15aが制動腕11の他端部11bに結合され、紐状体15の他端側15bは駆動回路16で駆動される駆動モータ13a,13bの駆動プーリ14によって巻取り,巻戻し駆動される。すなわち、駆動モータ13a,13bで紐状体15を駆動し、制動腕11を駆動して制動ばね12による制動片10の押圧力を解除,付加する。駆動手段17a,17bは駆動モータ13a,13bと紐状体15と駆動回路16とで構成される。変位検出手段18は例えばマイクロスイッチなどで構成され、制動片10又は制動腕11の変位を検出し、制動解除又は制動付加状態であるかを検知する。   The drive motors 13a and 13b provided on the base 2 near the other end 11b of the brake arm 11 are rotationally controlled by a current, pulse, or frequency such as a DC motor, a stepping motor, or a synchronous motor provided with a drive pulley 14 on a rotating body. It is a rotary drive motor that can be used. The string-like body 15 is composed of, for example, a small-diameter wire rope, a chain, etc. One end side 15a of the string-like body 15 is coupled to the other end portion 11b of the braking arm 11, and the other end of the string-like body 15 The side 15b is wound and rewinded by the drive pulley 14 of the drive motors 13a and 13b driven by the drive circuit 16. That is, the string-like body 15 is driven by the drive motors 13a and 13b, the braking arm 11 is driven, and the pressing force of the braking piece 10 by the braking spring 12 is released and added. The drive means 17a and 17b are constituted by drive motors 13a and 13b, a string-like body 15, and a drive circuit 16. The displacement detection means 18 is composed of, for example, a micro switch, and detects the displacement of the brake piece 10 or the brake arm 11 to detect whether the brake is released or the brake is applied.

すなわち、本実施例では図1に示すように、制動付加機構としての制動ばね12,制動腕11及び制動片10で構成され、制動解除機構としての駆動モータ13a及び紐状体15の駆動手段17aで構成された独立して機能する一組のブレーキ装置4がブレーキドラム9の右側に、制動付加機構としての制動ばね12,制動腕11及び制動片10で構成され、制動解除機構としての駆動モータ13b及び紐状体15の駆動手段17bで構成された独立して機能する一組のブレーキ装置4がブレーキドラム9の左側に、それぞれ備わっている。   That is, in this embodiment, as shown in FIG. 1, the brake spring 12, the brake arm 11, and the brake piece 10 are used as a brake addition mechanism, and the drive motor 13a as the brake release mechanism and the drive means 17a of the string-like body 15 are used. A pair of independently functioning brake devices 4 composed of: a brake spring 12, a brake arm 11 and a brake piece 10 as a brake addition mechanism on the right side of the brake drum 9, and a drive motor as a brake release mechanism On the left side of the brake drum 9, a pair of independently functioning brake devices 4 constituted by 13 b and the driving means 17 b of the string-like body 15 are provided.

図2,図3において、巻上機1はエレベーター昇降路19に設置される。例えば、巻上機1は昇降路19下部に設置され、主ロープ6が駆動シーブ5に巻き掛けられ、さらに、乗かご7,つり合おもり8及び昇降路19上部に設けられるプーリ19a,19b,19cなどを巻回して、両端が昇降路19上部に固定される。   2 and 3, the hoist 1 is installed in the elevator hoistway 19. For example, the hoist 1 is installed at the lower part of the hoistway 19, the main rope 6 is wound around the drive sheave 5, and the pulleys 19 a, 19 b, provided at the upper part of the car 7, the counterweight 8 and the hoistway 19, 19c etc. are wound and both ends are fixed to the hoistway 19 upper part.

図4は図1の駆動手段の駆動モータの駆動回路図、図5は図4の駆動モータの動作の時間変化を示す図である。図4,図5に示すように、駆動回路16で駆動モータ13a,13bに流す電流を制御して駆動プーリ14の回転変位を制御する。この駆動回路16の直流の制御電源20は、例えば直流電源とスイッチング素子とで構成され、この制御電源20の出力を接続,遮断する電磁接触器の接点21を介して駆動モータ13a,13bに接続されている。ダイオード22と抵抗23の直列接続したものが駆動モータ13a,13bと並列に接続され、接点21が開いた時に駆動モータ13a,13bからの還流電流を消費して保護する。   FIG. 4 is a drive circuit diagram of the drive motor of the drive means of FIG. 1, and FIG. 5 is a diagram showing the time change of the operation of the drive motor of FIG. As shown in FIGS. 4 and 5, the drive circuit 16 controls the current flowing through the drive motors 13 a and 13 b to control the rotational displacement of the drive pulley 14. The DC control power source 20 of the drive circuit 16 is composed of, for example, a DC power source and a switching element, and is connected to the drive motors 13a and 13b via a contact 21 of an electromagnetic contactor that connects and disconnects the output of the control power source 20. Has been. A diode 22 and a resistor 23 connected in series are connected in parallel with the drive motors 13a and 13b, and when the contact 21 is opened, the reflux current from the drive motors 13a and 13b is consumed and protected.

回転変位指令手段24は駆動モータ13a,13bの回転変位を指令するものであり、回転検出手段25a,25bは駆動モータ13a,13bの回転変位を検出するものである。回転変位指令手段24の指令26と回転検出手段25a,25bの検出値25c,25dは制御電源20に入力され、制御電源20は回転変位指令手段24の指令値26と回転検出手段25a,25bの検出値25c,25dとが一致するように出力して駆動モータ13a,13bの回転変位27を制御する。   The rotational displacement command means 24 commands rotational displacement of the drive motors 13a and 13b, and the rotation detection means 25a and 25b detect rotational displacement of the drive motors 13a and 13b. The command 26 of the rotation displacement command means 24 and the detection values 25c and 25d of the rotation detection means 25a and 25b are input to the control power supply 20, and the control power supply 20 receives the command value 26 of the rotation displacement command means 24 and the rotation detection means 25a and 25b. Output is performed so that the detected values 25c and 25d coincide with each other, and the rotational displacement 27 of the drive motors 13a and 13b is controlled.

図5に基づいて、この実施例の制動解除から制動付加までの動作、すなわち、T1時点からT4時点までの(A)駆動モータの回転変位指令26、(B)駆動モータの回転変位27、(C)接点21の動作を説明する。   Based on FIG. 5, the operation from the release of braking to the addition of braking in this embodiment, that is, (A) rotational displacement command 26 of the drive motor from time T1 to time T4, (B) rotational displacement 27 of the drive motor ( C) The operation of the contact 21 will be described.

T1時点で電源供給の電磁接触器の接点21が接続、T4時点で接点21が遮断となる。制動解除動作はT1からT2の期間で回転変位指令手段24の指令26により駆動モータ13a,13bの駆動プーリ14が紐状体15を巻取る方向に回転変位27に示す変位量だけ回転変位し、制動解除を行う。この図では回転変位指令26がランプ状に増大するように示してあるが、制動解除動作を速く又は遅くなど調節する場合は例えば指数関数的、二次関数的など曲線的な指令値が与えられる。T2からT3は制動解除の保持期間で、予め制動片10又は制動腕11の所定回転変位27aを超える回転変位指令手段24の指令値26を与えて、駆動モータ13a,13bの回転変位27を一定に保持する。あるいは、図1の変位検出手段18で制動片10又は制動腕11の所定回転変位27aを超えたことを検出して、回転変位指令手段24の指令値26を与えて駆動モータ13a,13bの回転変位27を一定に保持する。   The contact 21 of the power supply electromagnetic contactor is connected at time T1, and the contact 21 is cut off at time T4. The brake release operation is rotationally displaced by a displacement amount indicated by the rotational displacement 27 in the direction in which the drive pulleys 14 of the drive motors 13a and 13b wind the string-like body 15 in response to a command 26 of the rotational displacement command means 24 during a period from T1 to T2. Release the brake. In this figure, the rotational displacement command 26 is shown so as to increase in a ramp shape. However, when adjusting the braking release operation fast or slow, a curvilinear command value such as exponential function or quadratic function is given. . A period T2 to T3 is a brake release holding period, and a command value 26 of the rotational displacement command means 24 exceeding the predetermined rotational displacement 27a of the braking piece 10 or the braking arm 11 is given in advance, and the rotational displacement 27 of the drive motors 13a and 13b is kept constant. Hold on. Alternatively, the displacement detecting means 18 of FIG. 1 detects that the predetermined rotational displacement 27a of the braking piece 10 or the braking arm 11 has been exceeded, and gives the command value 26 of the rotational displacement command means 24 to rotate the drive motors 13a and 13b. The displacement 27 is kept constant.

そして、制動付加動作はT3からT4の期間で、回転変位指令手段24により駆動モータ13a,13bの駆動プーリ14が紐状体15を巻戻す方向に回転変位27する。この図では回転変位指令26がランプ状に減少するように示してあるが、制動付加時動作を速く又は遅くなど調節する場合は例えば指数関数的,二次関数的など曲線的な指令値が与えられる。   The braking addition operation is a period from T3 to T4, and the rotational displacement command means 24 rotationally displaces 27 the drive pulleys 14 of the drive motors 13a and 13b in the direction to rewind the string-like body 15. In this figure, the rotational displacement command 26 is shown to decrease in a ramp shape, but when adjusting the operation when braking is applied, such as fast or slow, a curvilinear command value such as exponential function or quadratic function is given. It is done.

なお、非常時の場合は接点21が開き、駆動モータ13a,13b,ダイオード22及び抵抗23の回路時定数で駆動モータ13a,13bからの還流電流が消滅し、制動ばね12の力によって制動片10がブレーキドラム9に押し付けられることによって、駆動モータ13a,13bは逆回転し、回転変位27が戻る。   In the case of an emergency, the contact 21 is opened, the return current from the drive motors 13a and 13b disappears with the circuit time constant of the drive motors 13a and 13b, the diode 22 and the resistor 23, and the braking piece 10 is driven by the force of the brake spring 12. Is pressed against the brake drum 9, the drive motors 13a and 13b rotate in the reverse direction, and the rotational displacement 27 returns.

なお、駆動モータ13a,13bの駆動動作を個別に制御する場合は、例えば図5の(A)回転変位指令に示すように、実線の回転変位指令26は駆動モータ13a、破線の回転変位指令は駆動モータ13bに対応するように回転変位指令28が与えられて駆動され、回転変位29となる。また、図示しないが、駆動モータ13a,13bの回転変位指令手段24の指令始めT1,終りT4をそれぞれずらして駆動することもできる。   When individually controlling the drive operations of the drive motors 13a and 13b, for example, as shown in (A) Rotation displacement command in FIG. 5, the solid line rotation displacement command 26 is the drive motor 13a, and the broken line rotation displacement command is A rotational displacement command 28 is given and driven so as to correspond to the drive motor 13 b, and a rotational displacement 29 is obtained. Further, although not shown in the figure, the command start T1 and end T4 of the rotational displacement command means 24 of the drive motors 13a and 13b can be shifted and driven.

ところで、図1では駆動手段17a,17bの駆動モータ13a,13bを巻上機1の固定部の基台2に設置した場合で示したが、図6には昇降路19の固定部30に設けられる場合を示している。図6は図1のブレーキ装置で駆動モータを昇降路の固定部に設けた例を示す要部拡大図である。すなわち、駆動モータ13a,13bが基台2に設けられない場合や駆動モータ13a,13bを保守点検の容易な位置に配置する場合に有効で、紐状体15をそらせプーリ31などで引き回し、遠隔作動することができる。   1 shows the case where the drive motors 13a, 13b of the drive means 17a, 17b are installed on the base 2 of the fixed part of the hoisting machine 1, but FIG. Shows the case. FIG. 6 is an enlarged view of an essential part showing an example in which a drive motor is provided in a fixed part of a hoistway in the brake device of FIG. In other words, it is effective when the drive motors 13a and 13b are not provided on the base 2 or when the drive motors 13a and 13b are arranged at positions where maintenance and inspection are easy. Can be operated.

図7は内拡ブレーキ装置を備える巻上機及びエレベーター装置の図1相当図である。同図に示すブレーキ装置4は内拡式ブレーキ装置であり、ブレーキドラム9の内周面を制動面9aとしている。図1の外拡式ブレーキ装置4と同様であり同一部分には同一符号を付して説明を省略する。ブレーキドラム9の制動面9aに一対の制動片10が当接するようになっている。この制動片10は一対の制動腕11の中間部11cに備えられ、一端部11aを可回転的に支持されている。制動ばね12が制動腕11の他端部11bに配置され、制動片10が制動面9aに押圧力を付加するようになっている。   FIG. 7 is a view corresponding to FIG. 1 of a hoisting machine and an elevator apparatus provided with an internal expansion brake device. The brake device 4 shown in the figure is an inner expansion brake device, and an inner peripheral surface of the brake drum 9 is a braking surface 9a. It is the same as that of the external expansion brake device 4 in FIG. A pair of braking pieces 10 abut against the braking surface 9 a of the brake drum 9. This braking piece 10 is provided in the intermediate part 11c of a pair of braking arms 11, and the one end part 11a is rotatably supported. A braking spring 12 is disposed at the other end 11b of the braking arm 11, and the braking piece 10 applies a pressing force to the braking surface 9a.

紐状体15の一端側15aを制動腕11の他端部11bに結合し、基台2に設置される駆動手段17a,17bの駆動モータ13a,13bの回転体に設けた駆動プーリ14で紐状体15の他端側15bを巻取り,巻戻し駆動する。これにより制動ばね12の押圧力を解除,付加する。駆動モータ13a,13bは駆動回路16で駆動される。この構成により、外拡ブレーキ方式が採用できない場合に有効となる。   One end side 15a of the string-like body 15 is coupled to the other end portion 11b of the brake arm 11, and the string is formed by a drive pulley 14 provided on a rotating body of the drive motors 13a and 13b of the drive means 17a and 17b installed on the base 2. The other end side 15b of the shaped body 15 is wound and driven to rewind. As a result, the pressing force of the brake spring 12 is released and applied. The drive motors 13a and 13b are driven by a drive circuit 16. This configuration is effective when the external expansion brake method cannot be adopted.

図8は図1の外拡ブレーキ装置でそらせプーリを用いて駆動モータの設置位置を変更した例を説明するための要部拡大図である。同図においては図1の外拡ブレーキ装置4において、駆動モータ13a,13bの設置側にそらせプーリ32を設け、紐状体15の一端側15aを制動腕11の他端部11bに結合し、そらせプーリ32に巻回して、一対の制動腕11の内側の基台2に設けた駆動モータ13a,13bでこの紐状体15の他端側15bを巻取り,巻戻し駆動する。駆動モータ13a,13bが一対の制動腕11の外側に配置できない場合に有効である。   FIG. 8 is an enlarged view of a main part for explaining an example in which the installation position of the drive motor is changed using a deflecting pulley in the externally expanding brake device of FIG. In the same figure, in the externally expanding brake device 4 of FIG. 1, a deflecting pulley 32 is provided on the installation side of the drive motors 13a and 13b, one end side 15a of the string-like body 15 is coupled to the other end portion 11b of the braking arm 11, The cord 15 is wound around the baffle pulley 32, and the other end side 15b of the string-like body 15 is wound up by the drive motors 13a and 13b provided on the base 2 inside the pair of brake arms 11, and is driven to rewind. This is effective when the drive motors 13a and 13b cannot be disposed outside the pair of braking arms 11.

図9は内拡ブレーキ装置における図8相当図である。同図に示すように内拡ブレーキ装置4において、駆動モータ13a,13bの設置側にそらせプーリ32を設け、紐状体15の一端側15aを制動腕11の他端部11bに結合し、そらせプーリ32に巻回して、一対の制動腕11の外側の基台2に設けた駆動モータ13a,13bでこの紐状体15の他端側15bを巻取り,巻戻し駆動する。駆動モータ13a,13bが一対の制動腕11の内側に配置できない場合に有効である。   FIG. 9 is a view corresponding to FIG. 8 in the internal expansion brake device. As shown in the figure, in the internal expansion brake device 4, a deflecting pulley 32 is provided on the installation side of the drive motors 13a, 13b, and one end side 15a of the string-like body 15 is coupled to the other end portion 11b of the braking arm 11 to deflect it. It winds around the pulley 32, winds up the other end side 15b of this string-like body 15 with the drive motors 13a and 13b provided in the base 2 outside the pair of brake arms 11, and drives to rewind. This is effective when the drive motors 13a and 13b cannot be arranged inside the pair of braking arms 11.

図10は、そらせプーリを用いて制動腕を減速駆動する図1の外拡ブレーキ、図7の内拡ブレーキの一方側のブレーキ装置を併記して示した要部拡大図である。同図に示すように、巻上機1の基台2及び制動腕11にそらせプーリ32,33を設置し、紐状体15の一端側15aを制動腕11の他端部に結合し、そらせプーリ32,33を巻回して、基台2に設けた駆動モータ13a(13b)でこの紐状体15の他端側15bを巻取り,巻戻し駆動する。すなわち、そらせプーリ32,33に紐状体15を巻回して1/3の減速機構を形成し、駆動モータ13a(13b)で制動腕11を減速駆動できるので、駆動トルクが小さくなって駆動モータ13a(13b)の小型化及び長回転変位化ができる。   FIG. 10 is an enlarged view of a main part in which the brake device on one side of the outer expansion brake of FIG. 1 and the inner expansion brake of FIG. As shown in the figure, the pulleys 32 and 33 are installed on the base 2 and the braking arm 11 of the hoisting machine 1, and one end side 15 a of the string-like body 15 is coupled to the other end of the braking arm 11 to deflect it. The pulleys 32 and 33 are wound, and the other end side 15b of the string-like body 15 is wound up by a drive motor 13a (13b) provided on the base 2 and driven to rewind. That is, the string-like body 15 is wound around the baffle pulleys 32 and 33 to form a 1/3 speed reduction mechanism, and the braking arm 11 can be driven at a reduced speed by the drive motor 13a (13b). The size of 13a (13b) can be reduced and the rotational displacement can be increased.

なお、図6で示したのと同様に、図7乃至図10に記載した例においても、駆動モータ13a,13bが巻上機1の固定部の基台2ではなく、昇降路19の固定部に設けられ、紐状体15をそらせプーリ32,33などで巻回し、駆動モータ13a,13bを保守点検の容易な位置に配置して遠隔作動することができる。   Similarly to the case shown in FIG. 6, in the examples shown in FIGS. 7 to 10, the drive motors 13 a and 13 b are not the base 2 of the fixing part of the hoist 1, but the fixing part of the hoistway 19. The string-like body 15 is deflected and wound by pulleys 32, 33, etc., and the drive motors 13a, 13b can be placed at positions where maintenance and inspection are easy to operate remotely.

本実施例では回転制御可能な駆動モータ13a,13bで紐状体15を駆動し制動腕11を駆動するようにしたので、従来の電磁石での駆動と異なり、制動腕11及び制動片10の変位制御ができるので、制動解除時の衝突音及び制動付加時の制動片10とブレーキドラム9との衝突音を低減できる。また、図1及び図6乃至図9で示したように、制動腕11の制動片10と紐状体15の結合位置による梃子比を調整したり、そらせプーリ32,33と紐状体15とで減速機構を形成したりすることができるので高減速化が可能となり、駆動トルクが小さくなって駆動手段17a,17bの駆動モータが小型化できる。また、制動腕11を駆動する駆動モータ13a,13bを巻上機1の基台2ではなく、離れた位置に設置して制動解除の遠隔作動ができるとともに、手の届く昇降路の固定部に設置すれば、保守点検のし易い昇降路の固定部に設置することもできるので、駆動モータの保守点検が容易にできる効果が得られる。   In this embodiment, the string-like body 15 is driven by the drive motors 13a and 13b capable of rotation control to drive the braking arm 11, so that the displacement of the braking arm 11 and the braking piece 10 is different from the driving by the conventional electromagnet. Since the control can be performed, it is possible to reduce the collision sound when the brake is released and the collision sound between the brake piece 10 and the brake drum 9 when the brake is applied. Further, as shown in FIGS. 1 and 6 to 9, the lever ratio according to the coupling position of the braking piece 10 of the braking arm 11 and the string-like body 15 is adjusted, and the baffle pulleys 32, 33 and the string-like body 15 are adjusted. Thus, it is possible to form a speed reduction mechanism, so that a high speed reduction is possible, the driving torque is reduced, and the driving motors of the driving means 17a and 17b can be reduced in size. In addition, the drive motors 13a and 13b for driving the braking arm 11 are installed not at the base 2 of the hoisting machine 1 but at a remote position so that the brake can be remotely released, and at the fixed part of the hoistway that can be reached. If installed, it can also be installed at the fixed part of the hoistway where maintenance and inspection are easy to perform, so the effect of facilitating maintenance and inspection of the drive motor can be obtained.

次に、実施例2を図11乃至図12に基づいて説明する。図11は本発明の実施例2のエレベーター用ブレーキ装置の要部拡大図、図12は本発明の実施例2の他の形態を示した要部拡大図であり、外拡ブレーキと内拡ブレーキを併記して示す。この実施例が実施例1の図1及び図6乃至図10と異なるのは、紐状体の両端側の結合を逆にして、紐状体の一端側が巻上機1の固定部に結合し、紐状体の他端側を制動腕に設けられた駆動モータで駆動することである。   Next, Example 2 will be described with reference to FIGS. FIG. 11 is an enlarged view of a main portion of an elevator brake device according to a second embodiment of the present invention, and FIG. 12 is an enlarged view of a main portion showing another form of the second embodiment of the present invention. Is shown together. This embodiment differs from FIG. 1 and FIGS. 6 to 10 of the first embodiment in that the connection on both ends of the string-like body is reversed and one end of the string-like body is connected to the fixing portion of the hoisting machine 1. The other end side of the string-like body is driven by a drive motor provided on the braking arm.

すなわち、図11では紐状体15の一端側15aが巻上機1の固定部である基台2に結合し、紐状体15の他端側15bが制動腕11に設けられた駆動モータ13a,13bで直接駆動する。   That is, in FIG. 11, one end side 15 a of the string-like body 15 is coupled to the base 2 that is a fixing portion of the hoisting machine 1, and the other end side 15 b of the string-like body 15 is provided on the braking arm 11. , 13b.

図12では紐状体15の一端側15aが巻上機1の固定部である基台2に結合し、制動腕11及び基台2に設けたそらせプーリを介して、紐状体15の他端側15bが制動腕11に設けられた駆動モータ13a(13b)で駆動し、紐状体15とそらせプーリとで減速機構を構成し1/3減速を形成している。   In FIG. 12, one end side 15 a of the string-like body 15 is coupled to the base 2 that is a fixing portion of the hoisting machine 1, and the other of the string-like body 15 is connected via the brake arm 11 and the deflecting pulley provided on the base 2. The end side 15b is driven by a drive motor 13a (13b) provided on the braking arm 11, and the string-like body 15 and the baffle pulley constitute a speed reduction mechanism to form a 1/3 speed reduction.

なお、図11の紐状体15の一端側15a,図12の紐状体15の一端側15a及びそらせプーリは昇降路19の固定部に設けても良い。   Note that the one end side 15 a of the string-like body 15 in FIG. 11, the one end side 15 a of the string-like body 15 in FIG. 12, and the baffle pulley may be provided in the fixing portion of the hoistway 19.

本実施例のように構成しても実施例1と同様の効果が得ることができる。   Even when configured as in the present embodiment, the same effects as in the first embodiment can be obtained.

次に、実施例3を図13乃至図15に基づいて説明する。図13は本発明の実施例3のエレベーター用ブレーキ装置の要部拡大図、図14は本発明の実施例3の他の形態を示した要部拡大図、図15は本発明の実施例3のさらに他の形態を示した要部拡大図である。実施例3が実施例2の図11,図12と異なるのは、紐状体の一端側が制動腕に結合し、巻上機1の固定部又は昇降路の固定部に設けられたそらせプーリを介して、紐状体の他端側が制動腕に設けた駆動モータで駆動することである。   Next, Embodiment 3 will be described with reference to FIGS. FIG. 13 is an enlarged view of a main portion of an elevator brake device according to a third embodiment of the present invention, FIG. 14 is an enlarged view of a main portion showing another form of the third embodiment of the present invention, and FIG. 15 is a third embodiment of the present invention. It is the principal part enlarged view which showed other form of this. The third embodiment differs from the second embodiment shown in FIGS. 11 and 12 in that the one end side of the string-like body is coupled to the braking arm, and the baffle pulley provided at the fixing portion of the hoist 1 or the fixing portion of the hoistway is provided. Then, the other end side of the string-like body is driven by a drive motor provided on the braking arm.

すなわち、図13では紐状体15の一端側15aが制動腕11に結合し、基台2又は昇降路19の固定部に設けたそらせプーリ32を介して、また紐状体15の他端側15bが制動腕11に設けられた駆動モータ13a(13b)で駆動され、紐状体15とそらせプーリ32とで減速機構を構成し1/2減速を形成している。   That is, in FIG. 13, one end side 15 a of the string-like body 15 is coupled to the braking arm 11, and the other end side of the string-like body 15 via the baffle pulley 32 provided in the fixing portion of the base 2 or the hoistway 19. 15b is driven by a drive motor 13a (13b) provided on the braking arm 11, and the string-like body 15 and the deflecting pulley 32 constitute a speed reduction mechanism to form a 1/2 speed reduction.

図14では図13と同様に、紐状体15の一端側15aが制動腕11に結合し、基台2又は昇降路19の固定部に設けたそらせプーリ32a,32b及び制動腕11に設けたそらせプーリ33を介して、紐状体15の他端側15bを制動腕11に設けた駆動モータ13a(13b)で駆動し、紐状体15とそらせプーリ32a,32b,33とで減速機構を構成し1/4減速を形成している。   In FIG. 14, as in FIG. 13, one end side 15 a of the string-like body 15 is coupled to the braking arm 11, and is provided on the deflection pulleys 32 a and 32 b and the braking arm 11 provided on the base 2 or the fixed portion of the hoistway 19. The other end side 15b of the string-like body 15 is driven by the drive motor 13a (13b) provided on the braking arm 11 via the deflection pulley 33, and the deceleration mechanism is operated by the string-like body 15 and the deflection pulleys 32a, 32b, 33. Consists of a 1/4 speed reduction.

図15では図14において、基台2又は昇降路19の固定部に設けた2個のそらせプーリ32a,32bをブラケット34に回動支持し、このブラケットを基台2又は昇降路19の固定部に設けた軸35で回動支持したものである。   In FIG. 15, in FIG. 14, two deflecting pulleys 32 a and 32 b provided on the base 2 or the fixing part of the hoistway 19 are rotatably supported by the bracket 34, and this bracket is fixed to the base 2 or the hoistway 19 fixing part. Is supported by a shaft 35 provided on the rotary shaft.

本実施例では実施例1と同様の効果が得られる。また図15に示した例では複数のそらせプーリが一つのブラケットに取付けられているので、現場での取付工事が簡易化され、設置効率が向上する。またブラケットを軸35の1点で固定することができるため、複数のそらせプーリを設置できないような場所であっても取付けることが可能となるという効果も得られる。   In the present embodiment, the same effect as in the first embodiment can be obtained. Further, in the example shown in FIG. 15, since a plurality of baffle pulleys are attached to one bracket, installation work at the site is simplified and installation efficiency is improved. Further, since the bracket can be fixed at one point of the shaft 35, it is possible to obtain an effect that it is possible to attach the bracket even in a place where a plurality of deflecting pulleys cannot be installed.

次に、実施例4を図16乃至図18に基づいて説明する。図16は本発明の実施例4のエレベーター用ブレーキ装置の要部拡大図、図17は本発明の実施例4の他の形態を示した要部拡大図、図18は本発明の実施例4のさらに他の形態を示した要部拡大図である。実施例4が実施例3の図13乃至図15と異なるのは、逆に紐状体の一端側を固定部に結合し、制動腕に設けられたそらせプーリを介して、紐状体の他端側を巻上機の固定部又は昇降路の固定部に設けた駆動モータで駆動することである。   Next, a fourth embodiment will be described with reference to FIGS. FIG. 16 is an enlarged view of a main part of an elevator brake device according to a fourth embodiment of the present invention, FIG. 17 is an enlarged view of a main part showing another form of the fourth embodiment of the present invention, and FIG. 18 is a fourth embodiment of the present invention. It is the principal part enlarged view which showed other form of this. The fourth embodiment differs from the third embodiment shown in FIGS. 13 to 15 in that one end side of the string-like body is connected to the fixing portion and the other of the string-like body is connected via a baffle pulley provided on the braking arm. The end side is driven by a drive motor provided at a fixed part of the hoisting machine or a fixed part of the hoistway.

図16では紐状体15の一端側15aが巻上機1の固定部である基台2に結合し、制動腕11に設けたそらせプーリ33を介して、紐状体15の他端側15bが巻上機1の固定部である基台2に設けられた駆動モータ13a(13b)で駆動され、紐状体15とそらせプーリ33とで減速機構を構成し1/2減速を形成している。   In FIG. 16, one end side 15 a of the string-like body 15 is coupled to the base 2 that is a fixed portion of the hoisting machine 1, and the other end side 15 b of the string-like body 15 is passed through a deflecting pulley 33 provided on the brake arm 11. Is driven by a drive motor 13a (13b) provided on the base 2 which is a fixed part of the hoisting machine 1, and the string-like body 15 and the baffle pulley 33 constitute a speed reduction mechanism to form a 1/2 speed reduction. Yes.

図17では図16と同様に、紐状体15の一端側15aを巻上機1の固定部である基台2に結合し、基台2に設けたそらせプーリ32及び制動腕11に設けたそらせプーリ33a,33bを介して、紐状体15の他端側15bを巻上機1の固定部である基台2に設けた駆動モータ13a(13b)で駆動し、紐状体15とそらせプーリ33a,33b,32とで減速機構を構成し1/4減速を形成している。   In FIG. 17, similarly to FIG. 16, one end 15 a of the string-like body 15 is coupled to the base 2 that is a fixing portion of the hoisting machine 1, and is provided on the baffle pulley 32 and the braking arm 11 provided on the base 2. The other end side 15b of the string-like body 15 is driven by the drive motor 13a (13b) provided on the base 2 which is a fixing portion of the hoisting machine 1 through the deflecting pulleys 33a and 33b, and the string-like body 15 is deflected. The pulleys 33a, 33b, and 32 constitute a speed reduction mechanism to form a 1/4 speed reduction.

図18では図17において、制動腕11に設けたそらせプーリ33a,33bをブラケット34に回動支持し、このブラケット34を制動腕11に設けた軸36で回動支持したものである。   In FIG. 18, the deflection pulleys 33 a and 33 b provided on the braking arm 11 are rotatably supported by the bracket 34 in FIG. 17, and the bracket 34 is rotationally supported by the shaft 36 provided on the braking arm 11.

なお、図16乃至図18の紐状体15の一端側15a,駆動モータ13a,13b及びそらせプーリ32は昇降路19の固定部に設けても良い。   Note that the one end side 15 a of the string-like body 15 of FIGS. 16 to 18, the drive motors 13 a and 13 b, and the baffle pulley 32 may be provided in a fixed portion of the hoistway 19.

本実施例では実施例1と同様の効果が得られる。また図18に示した例では複数のそらせプーリが一つのブラケットに取付けられているので、現場での取付工事が簡易化され、設置効率が向上する。またブラケットを軸36の1点で固定することができるため、複数のそらせプーリを設置できないような場所であっても取付けることが可能となるという効果も得られる。さらに、図18に示す実施例では、軸36に力が集約されて制動腕11への力点が1点に集約されるという効果も得られる。特に制動腕11の駆動に伴いそらせプーリ33a,33bそれぞれにかかる力が異なってしまっても、力点が1点に集約されるため、駆動モータ13a,13bによる制動腕11のより効率的な駆動を行うことができるようになる。   In the present embodiment, the same effect as in the first embodiment can be obtained. In the example shown in FIG. 18, since a plurality of baffle pulleys are attached to one bracket, the installation work at the site is simplified and the installation efficiency is improved. Further, since the bracket can be fixed at one point of the shaft 36, there is an effect that it can be attached even in a place where a plurality of baffle pulleys cannot be installed. Further, in the embodiment shown in FIG. 18, there is also an effect that the force is concentrated on the shaft 36 and the force point on the braking arm 11 is concentrated on one point. In particular, even if the force applied to each of the deflecting pulleys 33a and 33b is different due to the driving of the braking arm 11, the power points are concentrated at one point, so that the driving motors 13a and 13b can drive the braking arm 11 more efficiently. Will be able to do.

次に、実施例5の一例を図19乃至図20に基づいて説明する。図19は本発明の実施例5のエレベーター用ブレーキ装置の要部拡大図、図20は、本発明の実施例5の他の形態を示した要部拡大図である。この実施例5が実施例1乃至4と異なるのは、制動腕と駆動手段との間に梃子を介在させ、駆動手段から制動腕を減速駆動することである。   Next, an example of the fifth embodiment will be described with reference to FIGS. FIG. 19 is an enlarged view of a main part of an elevator brake device according to a fifth embodiment of the present invention, and FIG. 20 is an enlarged view of a main part showing another form of the fifth embodiment of the present invention. The fifth embodiment differs from the first to fourth embodiments in that an insulator is interposed between the braking arm and the driving means, and the braking arm is driven to decelerate from the driving means.

図19に示す例は例えば図1の制動腕11の駆動機構に梃子37を介在させる例である。すなわち、梃子を巻上機1の基台2に設けた軸38で回動支持し、この梃子37の一方は押しボルト39を介して制動腕11と連動し、梃子37の他方は紐状体15の一端側15aと結合し、他端側15bを駆動モータ13a(13b)で駆動して減速駆動する。   The example shown in FIG. 19 is an example in which a lever 37 is interposed in the drive mechanism of the braking arm 11 of FIG. That is, the lever is pivotally supported by a shaft 38 provided on the base 2 of the hoisting machine 1, and one of the levers 37 is interlocked with the brake arm 11 via a push bolt 39, and the other of the levers 37 is a string-like body. 15 is coupled to one end side 15a, and the other end side 15b is driven by a drive motor 13a (13b) for decelerating driving.

図20に示す例は例えば図18の制動腕11の駆動機構に梃子を介在させる例であり、梃子37の一方は押しボルト39を介して制動腕11と連動し、そらせプーリ33a,33bを設けたブラケット34を梃子37の他方に回動支持し、紐状体15の一端側15a、そらせプーリ及び駆動モータ13a(13b)を巻上機1の固定部である基台2又は昇降路19の固定部に設置して減速駆動する。   The example shown in FIG. 20 is an example in which a lever is interposed in the drive mechanism of the braking arm 11 of FIG. 18, for example, and one side of the lever 37 is interlocked with the braking arm 11 via a push bolt 39, and baffle pulleys 33a and 33b are provided. The bracket 34 is pivotally supported on the other side of the lever 37, and the one end side 15a of the string-like body 15, the baffle pulley and the drive motor 13a (13b) are connected to the base 2 or the hoistway 19 which is a fixing part of the hoisting machine 1. Install at the fixed part and drive at a reduced speed.

なお、この実施例の梃子37はこの図19及び図20で一例を説明したが、前述の実施例1乃至4にも適用できる。   Note that the example of the insulator 37 of this embodiment has been described with reference to FIGS. 19 and 20, but it can also be applied to the above-described embodiments 1 to 4.

本実施例では実施例1と同様の効果が得られるとともに、梃子37によりさらに高減速機構が得られるので、駆動トルクがさらに小さくなって駆動モータ13a,13bがさらに小型化できる効果が得られる。また図20に示した例では複数のそらせプーリが一つのブラケットに取付けられているので、現場での取付工事が簡易化され、設置効率が向上する。またブラケットを軸36の1点で固定することができるため、複数のそらせプーリを設置できないような場所であっても取付けることが可能となるという効果も得られる。さらに、図20に示す実施例では、軸36に力が集約されて梃子37への力点が1点に集約されるという効果も得られる。特に梃子37の駆動に伴いそらせプーリ33a,33bそれぞれにかかる力が異なってしまっても、力点が1点に集約されるため、駆動モータ13a,13bによる梃子37のより効率的な駆動を行うことができるようになる。   In the present embodiment, the same effect as in the first embodiment can be obtained, and since a higher speed reduction mechanism can be obtained by the lever 37, the drive torque can be further reduced and the drive motors 13a and 13b can be further reduced in size. In the example shown in FIG. 20, since a plurality of baffle pulleys are attached to one bracket, the installation work at the site is simplified and the installation efficiency is improved. Further, since the bracket can be fixed at one point of the shaft 36, there is an effect that it can be attached even in a place where a plurality of baffle pulleys cannot be installed. Furthermore, in the embodiment shown in FIG. 20, there is also an effect that the force is concentrated on the shaft 36 and the power point on the insulator 37 is concentrated on one point. In particular, even if the force applied to each of the deflecting pulleys 33a and 33b is different as the lever 37 is driven, the power points are concentrated to one point, so that the lever 37 is driven more efficiently by the drive motors 13a and 13b. Will be able to.

1 巻上機
2 基台
3 電動機
4 ブレーキ装置
7 乗かご
9 ブレーキドラム
10 制動片
11 制動腕
12 制動ばね
13a,13b 駆動モータ
15 紐状体(15a 紐状体の一端側、15b 紐状体の他端側)
16 駆動回路
17a,17b 駆動手段
30 昇降路の固定部
31,32,32a,32b,33,33a,33b そらせプーリ
37 梃子
DESCRIPTION OF SYMBOLS 1 Hoisting machine 2 Base 3 Electric motor 4 Brake device 7 Car 9 Brake drum 10 Brake piece 11 Brake arm 12 Brake springs 13a, 13b Drive motor 15 String body (15a One end side of string body, 15b String body The other end)
16 drive circuit 17a, 17b drive means 30 hoistway fixing part 31, 32, 32a, 32b, 33, 33a, 33b deflecting pulley 37 insulator

Claims (5)

電動機と、前記電動機に設けられたブレーキドラムと、前記ブレーキドラムに対向配置された制動片と、前記制動片を支持する制動腕と、前記制動片を前記ブレーキドラムに押圧する制動ばねと、前記制動ばねの付勢力に抗して前記制動片を前記ブレーキドラムから離間させて制動を解除する駆動手段とを備えた巻上機のエレベーター用ブレーキ装置において、
前記駆動手段は紐状体と、回転型の駆動モータと、この駆動モータを駆動し制御する駆動回路とを備え、
前記紐状体の一端側を前記制動腕もしくは前記巻上機の基台あるいは昇降路の固定部に結合し、前記紐状体の他端側をそらせプーリを介して前記駆動モータで駆動して前記制動腕を駆動するようにしたことを特徴とするエレベーター用ブレーキ装置。
An electric motor; a brake drum provided in the electric motor; a braking piece disposed opposite to the brake drum; a braking arm that supports the braking piece; a braking spring that presses the braking piece against the brake drum; In an elevator brake device for a hoisting machine, comprising a driving means for releasing the braking by separating the braking piece from the brake drum against the urging force of a braking spring,
The drive means includes a string-like body, a rotary drive motor, and a drive circuit that drives and controls the drive motor,
One end side of the string-like body is coupled to the brake arm or the base of the hoisting machine or the fixed part of the hoistway, and the other end side of the string-like body is driven by the drive motor via a sled pulley. An elevator brake device characterized in that the brake arm is driven.
前記駆動モータは、前記巻上機の基台あるいは昇降路の固定部に設けたことを特徴とする請求項1記載のエレベーター用ブレーキ装置。 The elevator brake device according to claim 1 , wherein the drive motor is provided on a base of the hoisting machine or a fixed part of a hoistway . 前記駆動モータは、前記制動腕に設けたことを特徴とする請求項1記載のエレベーター用ブレーキ装置。 The elevator brake device according to claim 1 , wherein the drive motor is provided on the braking arm . 前記駆動手段は、少なくとも前記制動腕、前記巻上機の基台あるいは昇降路の固定部のいずれかに備えたそらせプーリと、前記紐状体とで減速機構を形成し、前記制動腕を減速駆動するようにしたことを特徴とする請求項1記載のエレベーター用ブレーキ装置。 The drive means forms a speed reduction mechanism with at least the brake arm, a deflecting pulley provided on either the base of the hoist or a fixed part of the hoistway, and the string-like body, and decelerates the brake arm. 2. The elevator brake device according to claim 1, wherein the elevator brake device is driven . 前記制動腕と紐状体との間に梃子を介在し減速駆動したことを特徴とする請求項1記載のエレベーター用ブレーキ装置。 The elevator brake device according to claim 1, wherein an insulator is interposed between the braking arm and the string-like body and driven at a reduced speed .
JP2009078005A 2009-03-27 2009-03-27 Brake device for elevator Expired - Fee Related JP5315107B2 (en)

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