JP5029983B2

JP5029983B2 - Brake structure of switchgear

Info

Publication number: JP5029983B2
Application number: JP2006293290A
Authority: JP
Inventors: 雄二高井
Original assignee: Fuj Hensokuki Co Ltd
Current assignee: Fuj Hensokuki Co Ltd
Priority date: 2006-09-29
Filing date: 2006-09-29
Publication date: 2012-09-19
Anticipated expiration: 2026-09-29
Also published as: JP2008088788A

Description

本発明は、開口部に設置された開閉機で昇降する閉鎖部材をライニングの拡狭作動により制動するブレーキ構造に関するものである。 The present invention relates to a brake structure that brakes a closing member that is lifted and lowered by an opening / closing machine installed in an opening portion by a lining expansion / contraction operation.

従来の開閉機のブレーキは、特許文献１のように円筒状のドラムに同形状の２組のライニングを備え、１組をドラムの内周面に圧接して閉鎖部材を停止させる制動部と、もう１組をドラムの端面にガバナスプリングで遊着されたガバナブレーキとして配置してある。閉鎖部材の上昇は、電動モータ又は手動ハンドルの回転を駆動源にして、閉鎖部材を巻き取る駆動装置により巻上げ、上部で停止状態を維持する制動部がある。閉鎖部材の下降は、閉鎖部材の自重を駆動源にして、停止状態の制動部を解除することで下降できるようにしている。 A brake of a conventional opening / closing machine is provided with two sets of linings having the same shape on a cylindrical drum as in Patent Document 1, and a braking unit that presses one set against the inner peripheral surface of the drum to stop a closing member; The other set is arranged as a governor brake attached to the end face of the drum by a governor spring. The closing member is lifted by a driving device that winds up the closing member using the rotation of the electric motor or the manual handle as a driving source, and has a braking unit that maintains a stopped state at the top. The lowering of the closing member can be lowered by releasing the braking portion in the stopped state using the dead weight of the closing member as a driving source.

特許文献２のブレーキは、電磁ブレーキと電磁ブレーキに連結するガバナブレーキを備えている。閉鎖部材の上昇は、電動モータの回転が駆動源になり、閉鎖部材を巻上げて上部で停止状態を維持する電磁ブレーキがある。閉鎖部材の下降は、電動モータの回転が駆動源になり、電磁ブレーキを解放して電動モータの駆動力で下降させている。電動モータの駆動源として下降するものは、自重降下のものより低騒音で非常時の緊急停止も安全に作用する。
特開２００５−２８２２６７公報特開２００３−４０７４公報 The brake of patent document 2 is provided with the governor brake connected with an electromagnetic brake and an electromagnetic brake. As for the raising of the closing member, there is an electromagnetic brake in which the rotation of the electric motor serves as a driving source, and the closing member is wound up to maintain the stopped state at the upper part. The closing member is lowered by the driving force of the electric motor by releasing the electromagnetic brake using the rotation of the electric motor as a driving source. What descends as a drive source of the electric motor is lower in noise than that of its own weight descent and can be operated safely in an emergency stop.
JP-A-2005-282267 JP 2003-4074 A

しかし、特許文献１では解放用のワイヤを引くことで、制動を解除して閉鎖部材を下降させているが自動で停止させることができなく、制動用のワイヤを引く必要があり、ワイヤを引き忘れると閉鎖部材が地上面に当接しても巻胴の慣性力による回転で余剰に巻き掛けてある閉鎖部材が下降を続け、案内レールに重なり合い閉鎖部材を押出し双方ともに破損させる結果を招く。 However, in Patent Document 1, by pulling the release wire, the brake is released and the closing member is lowered, but it cannot be stopped automatically, and it is necessary to pull the brake wire. If you forget, even if the closing member comes into contact with the ground surface, the closing member that is excessively wound by the rotation of the inertia force of the winding drum continues to descend, overlaps with the guide rail, pushes the closing member, and causes both to break.

特許文献２は、高価な電磁ブレーキを採用して、電動モータにより上昇及び下降を行うがガバナブレーキを動作することなく備えている。ガバナブレーキの動作は、非常時の火災・停電の時に、閉鎖する閉鎖部材の自重を駆動源にして、下降する閉鎖部材の速度を抑えるものである。閉鎖部材は、下降するに従い重量が増えるため速度を速めるが、回転が上がるとライニングが開き制動する回転制御を行い、低速ではあるが最終的には地上面に激突することで、特許文献１と同様に閉鎖部材と案内レールを破損することになる。 Patent Document 2 employs an expensive electromagnetic brake and moves up and down by an electric motor, but includes a governor brake without operating. The operation of the governor brake is to suppress the speed of the closing member that descends by using the weight of the closing member that is closed as a driving source in the event of an emergency fire or power failure. The closing member increases in weight as it descends, so the speed increases, but when the rotation goes up, the lining opens and brakes to control the rotation. Similarly, the closing member and the guide rail will be damaged.

本発明では、制動を機械式に拡狭動作するライニングを複数組にして、使用頻度が少ないガバナブレーキを小型化し、停止位置に近づくと第１ブレーキが作動して速度を低下させ、最終の第２ブレーキも作動させ停止位置で確実に止める構成であり、停電時でも閉鎖部材の自重を利用して、減速機の歯面とギヤの検出部の動力で、第１ブレーキと第２ブレーキを牽引して制動させる構成にしている。 In the present invention, a plurality of sets of linings for mechanically expanding and narrowing the braking are made, and the governor brake that is less frequently used is miniaturized. When approaching the stop position, the first brake is operated to reduce the speed, and the final first The two brakes are also actuated and stopped securely at the stop position. Even during a power failure, the first brake and the second brake are pulled by the power of the reduction gear's tooth surface and the gear detector using the weight of the closing member. And braking.

ガバナブレーキは、非常用のときの自重降下時に使用するもので、頻度が少なくほとんど使用することが無いため小型化して安価にすると共に、制動効果を向上させる複数組のブレーキを動作せるブレーキ構造を提供するものである。 Governor brakes are used when the weight of the vehicle is lowered in an emergency, and since it is rarely used and rarely used, it has a brake structure that operates multiple sets of brakes to reduce the size and cost and improve the braking effect. It is to provide.

請求項１の発明では、開口部を上下方向に開閉する閉鎖部材を天井部から吊下げ、該天井部には閉鎖部材を巻き取る巻胴を配置して、巻胴を回転させる開閉機から構成されている。前記開閉機は、巻胴に伝達する減速機部と、減速機部の回転から回転量により牽引動作で停止位置に制動させる検出部と、減速機部に入力するモータ軸を備えた駆動モータと、駆動モータの回転を制動する制動部と、からなり、前記制動部は、円筒状のドラムを前記モータ軸に嵌着させ、該ドラム内周に押圧して閉鎖部材を停止させる複数組のライニングと、前記ドラムの端面には、ライニングをガバナスプリングの張力で遊嵌して、ドラムの回転による遠心力で拡開して駆動モータの内周面に当接するガバナブレーキと、を備えている。前記検出部の検出で作動する制動部の複数組のライニングは、第１ブレーキと第２ブレーキとから成っている。第１ブレーキは、閉鎖部材の停止位置手前で低速の作動をする。第２ブレーキは、閉鎖部材の停止位置に到達する時に作動する構成とする。According to the first aspect of the present invention, a closing member that opens and closes the opening portion in the vertical direction is suspended from the ceiling portion, and a winding drum that winds the closing member is disposed on the ceiling portion, so that the winding drum is rotated. Has been. The opening / closing machine includes a speed reducer unit that transmits to a winding drum, a detection unit that brakes to a stop position by a traction operation based on a rotation amount from the rotation of the speed reducer unit, and a drive motor that includes a motor shaft that inputs to the speed reducer unit; a braking unit for braking the rotation of the drive motor, made, the brake unit is a cylindrical drum is fitted to the motor shaft, a plurality of sets of lining to stop the closure member is pressed against the inner circumference of the drum If, on the end face of the drum is loosely fitted a lining at a tension of the governor spring is provided with a contact with the governor brakes, the inner peripheral surface of the expansion to the drive motor by the centrifugal force due to rotation of the drum. A plurality of sets of linings of the braking unit that are activated by the detection of the detection unit includes a first brake and a second brake. The first brake operates at a low speed before the stop position of the closing member. The second brake is configured to operate when reaching the stop position of the closing member .

請求項２の発明では、前記ガバナブレーキは、駆動モータを駆動させて昇降するときに、モータ軸の回転が昇降速度を超過するとき制動作用して、制動部のライニング径より小型化する構成とする。
請求項３の発明では、前記検出部の牽引動作は、閉鎖部材が降下する自重による回転力を駆動源にする減速機の回転量で移動する牽引軸で第１ブレーキと第２ブレーキを牽引して、該第１ブレーキと第２ブレーキとの少なくとも一方に作用する構成にする。According to a second aspect of the present invention, the governor brake is configured such that, when the drive motor is driven to move up and down, the governor brake is braked when the rotation of the motor shaft exceeds the lifting speed and is made smaller than the lining diameter of the braking portion. To do.
In the invention of claim 3, pulling operation of the detector, driving the first brake and the second brake traction shaft to move by the rotation amount of the reduction gear for the rotational force due to its own weight of the closing member is lowered to the drive source Thus, it is configured to act on at least one of the first brake and the second brake .

請求項１の構成では、複数組の制動ブレーキにより、制動力を向上させて小型化することができ、減速機の検出部の牽引で停止させることもできるし、ガバナブレーキによる自重降下時での速度を抑制することもでき、停止位置手前で低速度にする第１ブレーキと、停止位置に止める第２ブレーキとにより確実に止める作用がある。In the configuration of claim 1, the braking force can be improved and reduced in size by a plurality of sets of braking brakes, and can be stopped by towing the detection unit of the speed reducer, or when the weight of the governor brake is lowered. It can suppress the rate, a first brake to the low speed stop position before it is reliably stopped working by a second brake for stopping the stop position.

請求項２の構成では、ガバナブレーキを小型にすることでスペースを広げ、そのスペースにブレーキを複数に増加させ制動力を高め、開閉機をコンパクトに構成でき、停電時でも安全に自重降下して一定速度で降下することができる作用がある。
請求項３の構成では、閉鎖部材の自重で減速機に連動する検出部が駆動力になり制動ブレーキを動作させ、停止位置に確実に止める作用がある。In the configuration of claim 2 , the governor brake can be made smaller to increase the space, to increase the braking force by increasing the number of brakes in that space, to make the switch compact, and to reduce the weight safely even during a power failure. There is an action that can descend at a constant speed.
In the structure of Claim 3 , the detection part interlock | cooperated with a reduction gear with the dead weight of a closing member becomes a driving force, operates a brake, and has the effect | action stopped reliably at a stop position.

請求項１の発明では、閉鎖部材を停電時の閉鎖でも安全に確実に閉鎖でき、開閉機を小型にして安価にでき、閉鎖部材の降下速度を速めても複数のブレーキが働き安全全に確実に停止できる効果がある。In the invention of claim 1, also be safely and reliably closed by the closure of power failure the closure member, can be inexpensive and closing machine compact, reliably secure all work plurality of brakes expediting lowering speed of the closure member There is an effect that can be stopped.

請求項２の発明では、頻度が低いガバナブレーキを小型にして、開閉機を小型で安価できる効果がある。
請求項３の発明では、非常時の停電時でも閉鎖部材を停止位置に確実に降下させることができる効果がある。In the invention of claim 2 , there is an effect that the governor brake having a low frequency can be made small, and the switch can be made small and inexpensive.
In the invention of claim 3 , there is an effect that the closing member can be reliably lowered to the stop position even in the event of a power failure in an emergency.

本発明は、出入口を開閉する閉鎖部材６が、開口部２に設置された開閉機１の駆動回転で正確に停止させることができるブレーキを複数組に設け、制動を強化した制動部１０の提供するもので、その一実施例を上げて説明する。図１は、両側を壁面７で遮断された開口部２を備え、開口部２を出入口として通路にしている。開口部２は、天井Ｔから地上面ＧＬまで閉鎖部材６が吊り下げられ、天井Ｔ内に設置された巻胴３にて巻き取り・巻き戻しして、開閉可能にしている。閉鎖部材６は、壁面７に沿って鉛直に立設された案内レール５に案内されて開閉する。開閉動作は、天井Ｔに軸着された巻胴３が開閉機１の駆動回転により、巻上げと巻き戻しして開口部２の上部付近から地上面ＧＬに接触する位置に停止する制動部１０を備えて行う。 The present invention provides a braking unit 10 in which a closing member 6 that opens and closes an entrance / exit is provided with a plurality of sets of brakes that can be stopped accurately by driving rotation of an opening / closing machine 1 installed in an opening 2 to enhance braking. One example will be described. FIG. 1 includes an opening 2 that is blocked on both sides by a wall surface 7, and the opening 2 serves as a passage. The opening 2 is opened and closed by a closing member 6 suspended from the ceiling T to the ground surface GL and wound and rewound by a winding drum 3 installed in the ceiling T. The closing member 6 is opened and closed by being guided by a guide rail 5 erected vertically along the wall surface 7. In the opening / closing operation, the brake drum 10 that is pivotally attached to the ceiling T is wound up and rewound by the driving rotation of the switch 1 to stop the braking unit 10 that stops at a position in contact with the ground surface GL from the upper part of the opening 2. Do it in preparation.

閉鎖部材６は、樹脂製のシートを開閉するシートシャッターでも金属製のシャッターでもよい。巻胴３は、軸受４で両端を支持され、回転可能にして一端側に巻胴スプロケット１４が固定されている。巻胴スプロケット１４は、開閉機１の出力スプロケット１５に巻掛けられて連結されている。開閉機１は、制動部１０と駆動モータ９と減速機８と検出部４１とを備えて、別途に備えている制御部１２の指令で回転力を巻胴３に伝達する。 The closing member 6 may be a sheet shutter that opens and closes a resin sheet or a metal shutter. The winding drum 3 is supported at both ends by a bearing 4 and is rotatable so that a winding drum sprocket 14 is fixed to one end. The winding drum sprocket 14 is wound around and connected to the output sprocket 15 of the opening / closing machine 1. The opening / closing machine 1 includes a braking unit 10, a drive motor 9, a speed reducer 8, and a detection unit 41, and transmits a rotational force to the winding drum 3 according to a command from a separately provided control unit 12.

図２は、制動部１０の電気により制御する第１ブレーキ３８と第２ブレーキ３９を示し、動作について説明する。箱型の取付板３７に内蔵された第１アーム２５と第２アーム２６は、中心にアーム軸２８により回動可能に支持され、両端の一端にブレーキスプリング４３を係合させ引張ることで傾斜させてアーム軸２８を回動させ、制動させる機構にしている。他端には、ソレノイド２７が備えられて、電磁作用で第１アーム２５と第２アーム２６を傾斜させ、アーム軸２８を回動することで制動を解除する。 FIG. 2 shows the first brake 38 and the second brake 39 that are controlled by the electricity of the braking unit 10, and the operation will be described. The first arm 25 and the second arm 26 incorporated in the box-shaped mounting plate 37 are rotatably supported by an arm shaft 28 at the center, and are inclined by engaging and pulling brake springs 43 at one end of both ends. Thus, the arm shaft 28 is rotated and braked. A solenoid 27 is provided at the other end, and the first arm 25 and the second arm 26 are inclined by electromagnetic action, and the arm shaft 28 is rotated to release the braking.

アーム軸２８は、取付板３７に回動可能に軸着されて、両方に突出されている。取付板３７の反対側（図２の裏面）には、半円状のライニング４４がガバナスプリング３２で係合させ、揺動可能に円状に形成されて係着している。取付板３７の中心には、円状の透孔があり、モータ軸３６が突出して、そのモータ軸３６に前記ライニング４４が当接するドラム３５が固定されている。ライニング４４は、第１アーム２５と第２アーム２６の傾斜でドラム３５の内周面に当接してモータ軸３６の回転を停止させる。 The arm shaft 28 is pivotally attached to the mounting plate 37 and protrudes from both. A semicircular lining 44 is engaged with the governor spring 32 on the opposite side (back surface in FIG. 2) of the mounting plate 37, and is formed in a circular shape so as to be swingable. At the center of the mounting plate 37, there is a circular through hole, the motor shaft 36 protrudes, and the drum 35 with which the lining 44 abuts against the motor shaft 36 is fixed. The lining 44 contacts the inner peripheral surface of the drum 35 by the inclination of the first arm 25 and the second arm 26 to stop the rotation of the motor shaft 36.

図３は、アーム軸２８とライニング４４を説明するもので、アーム軸２８の先端部付近の外周面にセレーション・ローレット等の係合面３１を備え、第１アーム２５・第２アーム２６が固着され、次に平面３０と丸面２９が備えてある。取付板３７に軸着された２本のアーム軸２８には、ガバナスプリング３２で係合して１組にしたライニング４４の２組が平面３０と丸面２９に遊嵌状態で取り付けてある。平面３０は、ライニング４４がガバナスプリング３２の付勢力で支持され、アーム軸２８が回動（角度１０度ぐらい）することでライニング４４が狭閉状態から拡開状態になり、ライニング４４外周面を当接させることで制動作用をする。 FIG. 3 illustrates the arm shaft 28 and the lining 44. The first arm 25 and the second arm 26 are fixedly provided with an engaging surface 31 such as a serration / knurl on the outer peripheral surface near the tip of the arm shaft 28. Next, a plane 30 and a round surface 29 are provided. Two sets of linings 44 that are engaged with a governor spring 32 to form one set are attached to the flat surface 30 and the round surface 29 in a loosely fitted state on the two arm shafts 28 that are pivotally attached to the mounting plate 37. In the plane 30, the lining 44 is supported by the urging force of the governor spring 32, and when the arm shaft 28 rotates (about 10 degrees), the lining 44 is changed from the narrowed state to the expanded state. It makes a braking action by contacting.

丸面２９は、拡狭するライニング４４の平面３０の反対位置にして一対に形成され、この位置を支点として拡狭動作を行うものである。アーム軸２８の回動は、係合面３１に固着された第１アーム２５・第２アーム２６がブレーキスプリング４３の引張力でライニング４４を拡開させる制動動作になるか、ソレノイド２７の励磁によりライニング４４を平面３０に接触させ制動を解除する駆動動作にする。 The round surfaces 29 are formed in a pair at positions opposite to the plane 30 of the lining 44 to be expanded and contracted, and the expansion and contraction operation is performed with this position as a fulcrum. The rotation of the arm shaft 28 is caused by a braking operation in which the first arm 25 and the second arm 26 fixed to the engagement surface 31 expand the lining 44 by the tensile force of the brake spring 43, or by excitation of the solenoid 27. The lining 44 is brought into contact with the flat surface 30 so as to release the braking.

図４は、モータ軸３６に固定されたドラム３５を示し、ドラム３５内に前記ライニング４４の２組が配置され、ライニング４４が拡開するとドラム３５の内周面に接触してモータ軸３６の回転を停止させることができる制動部１０である。ドラム３５の端面には、ブレーキピン３３とガバナピン３４が固定されて、ライニング４４をガバナスプリング３２により狭閉して、ドラム３５の回転数により遠心力で拡開させ、駆動モータ９の内周面に接触して回転数を一定に保持させるガバナブレーキ４０が備えてある。Figure 4 shows a drum 35 fixed to the motor shaft 36, two sets of the lining 44 is placed into the drum 35, the motor shaft 36 lining 44 comes into contact with the inner peripheral surface of the expanding drum 35 A braking unit 10 capable of stopping the rotation. The brake pin 33 and the governor pin 34 are fixed to the end surface of the drum 35, the lining 44 is closed by the governor spring 32, and is expanded by the centrifugal force by the number of rotations of the drum 35, and the inner peripheral surface of the drive motor 9. A governor brake 40 is provided which keeps the rotational speed constant in contact with the motor .

ガバナブレーキ４０は、作用する回転数を駆動モータ９の電源による回転より高い値にしてあり、通常の巻き上げ巻き戻しでは作用しないようにガバナスプリング３２力が設定されている。従って、駆動モータ９の回転力で閉鎖部材６を上昇させることも、下降させることも駆動モータ９の回転数で行うので、ガバナブレーキ４０が拡開することがない。ただし、非常時の火災・地震・災害等で停電のときには、駆動モータ９が回転制御できないので、閉鎖部材６の自重で回転が増加していき、設定された回転数を上回りガバナブレーキ４０のライニング４４が拡開して駆動モータ９の内周面にして接触して回転数を制御して閉鎖部材６を一定速度で降下する。 The governor brake 40 has a higher rotational speed than the rotation by the power source of the drive motor 9, and the governor spring 32 force is set so that it does not work in normal winding and rewinding. Therefore, the closing member 6 is raised and lowered by the rotational force of the drive motor 9 at the number of rotations of the drive motor 9, so that the governor brake 40 is not expanded. However, in the event of a power failure due to an emergency fire, earthquake, disaster, etc., the drive motor 9 cannot be controlled to rotate, so the rotation increases due to the dead weight of the closing member 6, exceeding the set number of rotations, and the governor brake 40 lining. 44 expands and contacts the inner peripheral surface of the drive motor 9 to control the rotation speed and lower the closing member 6 at a constant speed.

図５は、ドラム３５に固定されたブレーキピン３３とガバナピン３４に取り付けられたライニング４４を示すガバナブレーキ４０であり、径を小さくして駆動モータ９に内蔵できるようにする。ドラム３５は、一端面を閉じた円筒状にして、端面の中心に突出させた支持部を中空にしてモータ軸３６に貫通させ、固定できるキー溝を備えている。ライニング４４は、ガバナスプリング３２の付勢力で引き寄せられてブレーキピン３３とガバナピン３４に外周を円状に形成され、遊着状態にしてモータ軸３６を中心に遠心力で外周径が大きくなるように拡開する。ライニング４４の外周には、計算された間隔を付けた駆動モータ９の内周面が備えられ、ライニング４４の拡開により当接する抵抗でモータ軸３６の回転を一定にして、閉鎖部材６を等速に降下させることができる。 FIG. 5 shows a governor brake 40 showing a brake pin 33 fixed to the drum 35 and a lining 44 attached to the governor pin 34, and can be built in the drive motor 9 with a reduced diameter. The drum 35 has a cylindrical shape with one end face closed, and has a key groove that can be fixed by passing through the motor shaft 36 with a hollow support portion protruding from the center of the end face. The lining 44 is attracted by the urging force of the governor spring 32 to form a circular outer periphery on the brake pin 33 and the governor pin 34 so that the outer periphery diameter is increased by the centrifugal force around the motor shaft 36 in a loose state. Expand. On the outer periphery of the lining 44, an inner peripheral surface of the drive motor 9 with a calculated interval is provided, and the rotation of the motor shaft 36 is made constant by the resistance abutted by the expansion of the lining 44, and the closing member 6 is It can be lowered quickly.

図６は、開閉機１と閉鎖部材６を巻き取る巻胴３の連結状態を示す説明図であり、巻胴スプロケット１４に出力スプロケット１５がチェンで巻回され、駆動モータ９の回転で開口部２の天井Ｔまで上昇する位置決めと、地上面ＧＬに接触させる位置決めがあり、開口部２の上端付近まで閉鎖部材６を上昇させ、制動部１０のソレノイド２７を消磁させて停止状態にする。下降は、制動部１０のソレノイド２７を励磁させアーム軸２８を回動してライニング４４を狭閉させ、制動を解除して駆動モータ９を回転させて、巻胴３を巻き戻して閉鎖部材６を下降させて地上面ＧＬに接触、制動部１０により制動させることで停止状態になる。 FIG. 6 is an explanatory view showing a connection state of the winding drum 3 that winds the opening / closing machine 1 and the closing member 6, and an output sprocket 15 is wound around the winding drum sprocket 14 by a chain, and the opening is generated by the rotation of the drive motor 9. There are positioning to rise to the ceiling T of 2 and positioning to contact with the ground surface GL, the closing member 6 is raised to the vicinity of the upper end of the opening 2, and the solenoid 27 of the braking part 10 is demagnetized to be in a stopped state. The lowering is performed by exciting the solenoid 27 of the braking unit 10 and rotating the arm shaft 28 to close the lining 44, releasing the braking and rotating the drive motor 9, and rewinding the winding drum 3 to close the closing member 6. Is brought into contact with the ground surface GL and braked by the braking unit 10 to stop.

開閉機１は、駆動モータ９の前後に分けて制動部１０と減速機８を連結して一体化している。制動部１０は、モータ軸３６に嵌着したドラム３５にライニング４４を当接させて回転を止めることで閉鎖部材６を停止させることができる。減速機８は、モータ軸３６が入力されて、遊星歯車とキャリアを２段に変速して出力スプロケット１５を駆動して、巻胴スプロケット１４に巻回している。巻胴スプロケット１４は、閉鎖部材６を巻き取る巻胴３に固定され、開口部２の上部から昇降させる。閉鎖部材６の停止位置は、減速機８内のキャリア１７の端面に歯面１８を付け、歯面１８に噛合うギヤ１９を備えたリミットスイッチ４２がある。リミットスイッチ４２は、開口部２を閉鎖部材６の開閉位置に正確に停止させることができる。 The opening / closing machine 1 is integrated by connecting the braking unit 10 and the speed reducer 8 separately before and after the drive motor 9. The braking unit 10 can stop the closing member 6 by stopping the rotation by bringing the lining 44 into contact with the drum 35 fitted to the motor shaft 36. The speed reducer 8 receives the motor shaft 36, shifts the planetary gear and the carrier in two stages, drives the output sprocket 15, and is wound around the winding body sprocket 14. The winding drum sprocket 14 is fixed to the winding drum 3 that winds the closing member 6, and moves up and down from the upper part of the opening 2. The closing position of the closing member 6 includes a limit switch 42 provided with a gear 19 that attaches the tooth surface 18 to the end surface of the carrier 17 in the speed reducer 8 and meshes with the tooth surface 18. The limit switch 42 can accurately stop the opening 2 at the opening / closing position of the closing member 6.

歯面１８には、リミットスイッチ４２のほかに、牽引軸２１がベベルギヤ２０を介して噛合い、ワイヤ２２で復帰レバー２４に係止して、キャリア１７の回転で牽引軸２１がワイヤ２２を移動させて、復帰スプリング４５に付勢された復帰レバー２４を回動させて第１アーム２５と第２アーム２６を傾斜させ、ブレーキの解除と制動動作とを行うことができる。だだし、牽引軸２１は、煙検出器１１が動作していないと、ワイヤ２２を長くしてあるため、復帰レバー２４が空転するだけである。煙検出器１１は、制御部１２により火災等の情報を分析して、停電時でも作動可能にするバッテリ１３の電源で行い、ＤＣソレノイド２７ａをワイヤ２２に摺動状態に取付けている。制御部１２は、火災の煙で検出する別途検出器の信号で、バッテリ１３の電源を入れＤＣソレノイドを励磁すると、ワイヤ２２を引くことで復帰レバー２４の回動角度を大きくして、第１アーム２５と第２アーム２６に接触させて傾斜させる。 In addition to the limit switch 42, the traction shaft 21 meshes with the tooth surface 18 via the bevel gear 20, and is locked to the return lever 24 by the wire 22, and the traction shaft 21 moves the wire 22 by the rotation of the carrier 17. Thus, the return lever 24 urged by the return spring 45 is rotated to tilt the first arm 25 and the second arm 26, so that the brake can be released and the braking operation can be performed. However, when the smoke detector 11 is not operating, the pulling shaft 21 has the wire 22 lengthened, so that the return lever 24 only idles. The smoke detector 11 analyzes information such as a fire by the control unit 12 and performs power supply of the battery 13 that can be operated even in the event of a power failure, and a DC solenoid 27a is attached to the wire 22 in a sliding state. When the battery 13 is powered on and the DC solenoid is energized, the control unit 12 increases the rotation angle of the return lever 24 by pulling the wire 22 in response to a separate detector signal detected by fire smoke. The arm 25 and the second arm 26 are brought into contact with each other and tilted.

図７は、牽引軸２１の動作で制動部１０の作用を説明するもので、キャリア１７に固定された出力軸１６が閉鎖部材６を昇降させている。キャリア１７の端面の歯面１８には、２つの同じギヤ１９で噛合い、ベベルギヤ２０を介して螺合された牽引軸２１が２組ある。２組の牽引軸２１は、第１アーム２５と第２アーム２６を傾斜する復帰レバー２４に連結されて、閉鎖部材６を上方位置から下降させて、地上面ＧＬの手前で第１アーム２５の傾斜による第１ブレーキ３８を作動させてモータ軸３６を低速回転にさせる。第２ブレーキ３９は、低速回転で下降する閉鎖部材６を地上面ＧＬ位置で作動させることで、２組のブレーキの作動で正確に停止させることができる。 FIG. 7 illustrates the operation of the braking unit 10 by the operation of the traction shaft 21. The output shaft 16 fixed to the carrier 17 raises and lowers the closing member 6. The tooth surface 18 on the end surface of the carrier 17 has two sets of traction shafts 21 meshed with two identical gears 19 and screwed through bevel gears 20. The two sets of traction shafts 21 are connected to a return lever 24 that inclines the first arm 25 and the second arm 26, and lowers the closing member 6 from the upper position so that the first arm 25 is moved in front of the ground surface GL. The first brake 38 due to the inclination is operated to rotate the motor shaft 36 at a low speed. The second brake 39 can be accurately stopped by operating the two sets of brakes by operating the closing member 6 that descends at a low speed rotation at the ground surface GL position.

第１ブレーキ３８の作動位置は、火災等の人が非難する場合を考慮して人がかがんで通行できる高さからでも低速領域に調整ができる。２組の牽引軸２１は、速比を変えた例で説明すると、閉鎖部材６が上端位置のとき、煙検出器１１が作動してワイヤ２２を短い状態にすると、両復帰レバー２４が回動して第１アーム２５・第２アーム２６をブレーキスプリング４３の付勢力に抗して傾斜させ、アーム軸２８を回動してライニング４４を狭閉させ、両第１ブレーキ３８・第２ブレーキ３９を解除する。閉鎖部材６は、自重で下降を始めモータ軸３６を回転させることで、検出部４１を動作して牽引軸２１を移動する。 The operating position of the first brake 38 can be adjusted to a low speed region even from a height at which a person can bend and pass in consideration of a case where a person such as a fire is accused. The two sets of traction shafts 21 will be described with an example in which the speed ratio is changed. When the closing member 6 is at the upper end position, when the smoke detector 11 is activated and the wire 22 is short, both return levers 24 rotate. Then, the first arm 25 and the second arm 26 are inclined against the urging force of the brake spring 43, the arm shaft 28 is rotated to close the lining 44, and the first brake 38 and the second brake 39 are both closed. Is released. The closing member 6 starts to descend by its own weight and rotates the motor shaft 36 to operate the detection unit 41 and move the traction shaft 21.

ベベルギヤ２０は、回転して第１アーム２５の牽引軸２１がワイヤ２２を緩める方向に移動して復帰レバー２４ゆっくり回動させ、ブレーキスプリング４３の付勢力で第１ブレーキ３８を掛けて閉鎖部材の下降速度を落としている。第２ブレーキ３９も同様な動作で第１ブレーキ３８の動作後の停止位置で閉鎖部材を制動させる。第１アーム２５と第２アーム２６両復帰レバー２４の回動は、ベベルギヤ２０の異速比だけでなく、復帰レバー２４の形状を変えているもの、ＤＣソレノイド２７ａのワイヤ２２を引く量を変えるもの、ライニングの接触面を変えるものにしてもよい。 The bevel gear 20 rotates so that the pulling shaft 21 of the first arm 25 moves in the direction of loosening the wire 22 and slowly rotates the return lever 24, and the first brake 38 is applied by the urging force of the brake spring 43 to The descent speed is slowing down. Similarly, the second brake 39 brakes the closing member at the stop position after the operation of the first brake 38. The rotation of the return levers 24 of the first arm 25 and the second arm 26 changes not only the speed ratio of the bevel gear 20 but also the shape of the return lever 24 and the amount by which the wire 22 of the DC solenoid 27a is pulled. The contact surface of the lining may be changed.

通常時では、第１アーム２５と第２アーム２６の回動を商用電源で動作するソレノイド２７（ＡＣ：交流電流型）にて行い、ガバナブレーキ４０が駆動モータ９の回転数では拡開しないようにしてあり、駆動モータ９の一定な回転で降下することができ作動することがない。閉鎖部材６は、地上面ＧＬに近づく低速領域にくると第１アーム２５のソレノイド２７が消磁されて、第１アーム２５がブレーキスプリング４３に引かれ傾斜すると、アーム軸２８が回動してライニング４４を拡開させて制動動作になる。駆動モータ９は、まだ回転を続けて、閉鎖部材６の下降速度を制動動作前より遅い状態で、地上面ＧＬにゆっくりと到達することになり、第２ブレーキ３９を動作させる。第２ブレーキ３９は、ライニング４４を拡開してドラム３５を完全に停止させる。復帰レバー２４は、回動しているが煙検出器（熱・音でもよく限定しない）１１が作動していないので、ワイヤ２２が延びて第１アーム２５・第２アーム２６と接触できない空転動作をする。 Under normal conditions, the first arm 25 and the second arm 26 are rotated by a solenoid 27 (AC: AC current type) that operates with a commercial power source, so that the governor brake 40 does not expand at the rotational speed of the drive motor 9. Therefore, the motor can be lowered with a constant rotation of the drive motor 9 and does not operate. When the closing member 6 comes to a low speed region approaching the ground surface GL, the solenoid 27 of the first arm 25 is demagnetized, and when the first arm 25 is pulled by the brake spring 43 and tilted, the arm shaft 28 rotates and is lining. 44 is expanded to perform a braking operation. The drive motor 9 continues to rotate and slowly reaches the ground surface GL in a state where the lowering speed of the closing member 6 is slower than before the braking operation, and operates the second brake 39. The second brake 39 expands the lining 44 and stops the drum 35 completely. The return lever 24 is rotating, but the smoke detector 11 (heat or sound is not limited) is not activated, so that the wire 22 extends so that it cannot contact the first arm 25 and the second arm 26. do.

非常時の開閉について説明すると、開口部２が開口状態のとき、開閉部材６は巻胴３に巻掛けられて上部に位置している。閉鎖部材６を下降するには、電源があれば下降スイッチにより駆動モータ９の回転で下降できるが、火災等の停電時のときは、煙検出器１１が作動して復帰レバー２４を回動させ第１アーム２５と第２アーム２６を回動させてブレーキを解除すると、閉鎖部材６が自重により下降を始める。煙検出器１１は、バッテリ１３と制御１２とＤＣソレノイド２７ａにより、図示略の火災を検知するセンサの信号から制御部１２が閉鎖の指令を発信させ、ＤＣソレノイド２７ａがワイヤ２２を緊張させるため復帰レバー２４の回動を大きくして、第１アーム２５と第２アーム２６に当接して傾斜させ制動を解除させることができる。Explaining about opening and closing in the event of an emergency, when the opening 2 is in the open state, the opening and closing member 6 is wound around the winding drum 3 and positioned at the top. In order to lower the closing member 6, if there is a power source, it can be lowered by the rotation of the drive motor 9 by the lowering switch. However, in the event of a power failure such as a fire, the smoke detector 11 is activated and the return lever 24 is rotated. When the brake is released by rotating the first arm 25 and the second arm 26, the closing member 6 starts to descend due to its own weight. The smoke detector 11 is returned by the battery 13, the control 12, and the DC solenoid 27a because the control unit 12 issues a closing command from the signal of a sensor that detects a fire (not shown), and the DC solenoid 27a tensions the wire 22. It is possible to release the braking by increasing the rotation of the lever 24 and inclining it by contacting the first arm 25 and the second arm 26.

閉鎖部材６は、下降をすることで検出部４１を回転して牽引軸２１を移動させる。牽引軸２１が移動するとワイヤ２２が緩む方向に進み復帰スプリング４５の引張り力で復帰レバー２４が回動する。図７の状態では、第２ブレーキ３９が解放中で、第１アーム２５が復帰レバー２４を離間して、第１ブレーキ３８を作動させて低速下降している。閉鎖部材６が地上面ＧＬに到達するころには、牽引軸２１が移動してワイヤ２２を緩め復帰レバー２４を回動して第２ブレーキ３９を作動してモータ軸３６の回転を停止させることで、閉鎖部材６で開口部２を安全に速く正確に閉鎖することができる。閉鎖部材６の下降速度は、低速領域を設けているので、安全であるため速度を通常品より高めに設定することができる。さらに、下降での作用を説明したが、上昇に採用しても同様な作用効果を得ることができる。 The closing member 6 moves the traction shaft 21 by rotating the detection unit 41 by descending. When the pulling shaft 21 moves, the wire 22 moves in the loosening direction, and the return lever 24 is rotated by the pulling force of the return spring 45. In the state of FIG. 7, the second brake 39 is being released, the first arm 25 is separated from the return lever 24, and the first brake 38 is operated to move down at a low speed. When the closing member 6 reaches the ground surface GL, the traction shaft 21 moves to loosen the wire 22 and rotate the return lever 24 to operate the second brake 39 to stop the rotation of the motor shaft 36. Thus, the opening 2 can be safely and accurately closed by the closing member 6. Since the lowering speed of the closing member 6 is provided in the low speed region, the speed can be set higher than the normal product for safety. Furthermore, although the action in the lowering has been described, the same action and effect can be obtained even if it is adopted for the raising.

本発明の制動装置を備えた開口部の開閉をする閉鎖部材を巻胴から吊下げている開閉機を示す正面図。 The front view which shows the opening / closing machine which has suspended the closing member which opens and closes the opening part provided with the braking device of this invention from the winding drum. 電源で制動する第１ブレーキと第２ブレーキを示す取付板の正面図。 The front view of the mounting plate which shows the 1st brake and 2nd brake which brake with a power supply. 第１ブレーキと第２ブレーキを示す斜視図。 The perspective view which shows a 1st brake and a 2nd brake. ドラムとガバナブレーキを示す斜視図。 The perspective view which shows a drum and a governor brake. ガバナブレーキを示す正面図。 The front view which shows a governor brake. 開閉機の説明用の構造図。 Structural drawing for description of an opening / closing machine. 牽引軸の動作と第１ブレーキと第２ブレーキの動作を示す説明図。 Explanatory drawing which shows operation | movement of a traction shaft, and operation | movement of a 1st brake and a 2nd brake.

Explanation of symbols

１開閉機
２開口部
６閉鎖部材
８減速機
９駆動モータ
１０制動部
１１煙検出器
１４巻胴スプロケット
１５出力スプロケット
１６出力軸
１７キャリア
１８歯面
１９ギヤ
２０ベベルギヤ
２１牽引軸
２４復帰レバー
２５第１アーム
２６第２アーム
２７ソレノイド
２７ａＤＣソレノイド
２８アーム軸
３５ドラム
３６モータ軸
３７取付板
３８第１ブレーキ
３９第２ブレーキ
４０ガバナブレーキ
４２リミットスイッチ
４３ブレーキスプリング
４４ライニングDESCRIPTION OF SYMBOLS 1 Opening / closing machine 2 Opening part 6 Closing member 8 Reduction gear 9 Drive motor 10 Braking part 11 Smoke detector 14 Winding cylinder sprocket 15 Output sprocket 16 Output shaft 17 Carrier 18 Tooth surface 19 Gear 20 Bevel gear 21 Traction shaft 24 Return lever 25 First Arm 26 Second arm 27 Solenoid 27a DC solenoid 28 Arm shaft 35 Drum 36 Motor shaft 37 Mounting plate 38 First brake 39 Second brake 40 Governor brake 42 Limit switch 43 Brake spring 44 Lining

Claims

A closing member that opens and closes the opening portion in the vertical direction is suspended from the ceiling portion, and a winding drum that winds the closing member is disposed on the ceiling portion, and the opening and closing device that rotates the winding drum is configured.
The opening / closing machine includes a reduction gear unit that transmits to a winding drum, a detection unit that detects a stop position by a pulling operation based on a rotation amount from the rotation of the reduction gear unit, and a drive motor including a motor shaft that inputs to the reduction gear unit; A braking portion for braking the rotation of the drive motor,
The brake unit, the cylindrical drum is fitted to the motor shaft, a plurality of sets of lining to stop the closure member is pressed against the inner circumference of the said drum,
The end face of the drum is loosely fitted a lining at a tension of governor spring, abutting the governor brake flares by centrifugal force to the inner peripheral surface of the drive motor by the rotation of the drum,
With
The plurality of sets of linings of the braking unit that are activated by detection of the detection unit includes a first brake and a second brake,
The brake structure for an opening / closing machine, wherein the first brake is operated at a low speed before the stop position of the closing member, and the second brake is operated when the stop position of the closing member is reached .

2. The governor brake according to claim 1, wherein when the drive motor is driven to move up and down, the governor brake applies a braking action when the rotation of the motor shaft exceeds the lifting speed, and is made smaller than the lining diameter of the braking portion . Brake structure for switchgear.

The traction operation of the detection unit is driven the first brake and the second brake traction shaft to move by the rotation amount of the reduction gear for the rotational force due to its own weight of the closing member is lowered to the drive source, and said first brake The brake structure for an opening and closing machine according to claim 1 , wherein the brake structure acts on at least one of the second brake and the second brake.