JPH0615962Y2 - Lifting frame suspension belt slack detection device for overhead type article carrier - Google Patents
Lifting frame suspension belt slack detection device for overhead type article carrierInfo
- Publication number
- JPH0615962Y2 JPH0615962Y2 JP3112989U JP3112989U JPH0615962Y2 JP H0615962 Y2 JPH0615962 Y2 JP H0615962Y2 JP 3112989 U JP3112989 U JP 3112989U JP 3112989 U JP3112989 U JP 3112989U JP H0615962 Y2 JPH0615962 Y2 JP H0615962Y2
- Authority
- JP
- Japan
- Prior art keywords
- suspension belt
- belt
- spring
- lifting frame
- detection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） この考案は、オーバーヘッド型物品搬送装置の昇降枠吊
持ベルトの弛み検知装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a slack detecting device for a lifting frame suspension belt of an overhead type article conveying device.
（従来技術） 従来、この種装置として、以下の如きものは知られてい
る。即ち、上方を走行する走行車に相互に連動回転す
る、少なくとも２本の回転軸が回転自在に設けられ、こ
れら回転軸各々には所要個の巻き取りドラムが嵌め止め
られ、これら巻き取りドラムに巻き取り・巻き戻し自在
となされた吊持ベルトの下端に昇降枠が設けられ、昇降
枠に物品保持用のロボットハンドが設けられたオーバー
ヘッド型物品搬送装置において、巻き取りドラムの近く
において走行車に設けられたリミットスイッチの接触子
を吊持ベルトに対向させておき、吊持ベルトが弛んで波
打ち状になった際に、波打ち状になった部分に接触子が
押されて作動し、そのことによって吊持ベルトが弛んだ
ことを検知するようにしたものは知られている。(Prior Art) Conventionally, the following devices are known as this type of device. That is, at least two rotary shafts that rotate in conjunction with a traveling vehicle traveling above are rotatably provided, and a required number of winding drums are fitted onto each of these rotary shafts, and the winding drums are fixed to these winding drums. In an overhead type article transfer device in which an elevating frame is provided at the lower end of a hanging belt that can be wound and unwound freely, and a robot hand for article holding is provided on the elevating frame, a traveling vehicle is installed near the winding drum. The contact of the limit switch provided is made to face the suspension belt, and when the suspension belt becomes loose and becomes wavy, the contact is pushed by the wavy portion and operates. It is known that the hanging belt is detected to be loose.
（従来技術の欠点） 前記従来装置においては、リミットスイッチの接触子
が、弛んで波打ち状になった吊持ベルトに押されて作動
することによって、吊持ベルトが弛んだことを検知する
ようにしたものであったため、吊持ベルトが弛んで波打
ち状にならなければ、換言すれば相当に吊持ベルトが弛
まなければ、吊持ベルトの弛みを検知出来ないという欠
点があった。(Disadvantages of Prior Art) In the conventional device, the contact of the limit switch is pushed by the slackening and wavy hanging belt to operate to detect the slackening of the hanging belt. Therefore, there is a drawback in that the slack of the suspension belt cannot be detected unless the suspension belt is slackened into a wavy shape, in other words, unless the suspension belt is considerably slackened.
（考案の目的） この考案は、吊持ベルトの緩み、換言すれば昇降枠の危
険な傾きをいち早く検知出来る弛み検知装置を提供する
ことを目的とするものである。(Object of the Invention) The present invention has an object to provide a slack detecting device capable of quickly detecting a slack of a suspension belt, in other words, a dangerous tilt of a lifting frame.
（実施例） 以下にこの考案を図面に示す実施例に基づいて説明す
る。なお、この明細書において、前とは第１図右側を、
後とは同図左側をいい、右とは第１図紙面表側を、左と
は同裏側をいう。(Embodiment) The present invention will be described below based on an embodiment shown in the drawings. In this specification, the front means the right side of FIG.
The rear means the left side in the figure, the right means the front side in FIG. 1, and the left means the back side.
天井１に吊持具２を介してガイドレール３が設けられ、
このガイドレール３に走行車４が前後いずれの方向にも
移動自在に吊持されている。A guide rail 3 is provided on the ceiling 1 via a lifting tool 2,
A traveling vehicle 4 is suspended on the guide rail 3 so as to be movable in either the front or rear direction.
前記走行車４に、軸心を左右に向けるようにして、前後
一対の回転軸６が軸受７によって回転自在に設けられ、
これら回転軸６の左端に連動ホイール８が嵌め止めら
れ、これら連動ホイール８に、チェーン・タイミングベ
ルト等のエンドレス帯９が掛け渡されている。前記後側
の回転軸６の右端部に従動ホイール１１が嵌め止められ
ている。前記走行車４に設けられた昇降枠用モーター１
２の駆動軸１３に駆動ホイール１４が嵌め止められ、こ
の駆動ホイール１４と前記従動ホイール１１とにチェー
ン・タイミングベルト等のエンドレス帯１５が掛け渡さ
れている。このような構成によって、駆動軸１３を回転
させることによって、回転軸６を回転させることが出来
る。A pair of front and rear rotary shafts 6 are rotatably provided on the traveling vehicle 4 by bearings 7 so that the axes thereof are directed to the left and right.
An interlocking wheel 8 is fixed to the left end of these rotary shafts 6, and an endless band 9 such as a chain / timing belt is stretched around the interlocking wheel 8. The driven wheel 11 is fixed to the right end portion of the rear rotary shaft 6 so as not to fit. Lift frame motor 1 provided on the traveling vehicle 4
A drive wheel 14 is fixed to the second drive shaft 13 and an endless band 15 such as a chain timing belt is stretched between the drive wheel 14 and the driven wheel 11. With such a configuration, the rotation shaft 6 can be rotated by rotating the drive shaft 13.
前記回転軸６各々には一対の巻き取りドラム１７が、以
下の如き構成によって、回転軸６に対して所定の回転方
向遊びを形成するようにして嵌められている。第３図及
び第４図に示す如く、回転軸６には巻き取りドラム１７
に対応して突起１８が設けられ、これら突起１８が、回
転方向遊びを形成するようにして、巻き取りドラム１７
に形成された切り欠き１９に嵌められている。前記突起
１８のばね受け部と切り欠き１９のばね受け側面１９ａ
とに、後述の吊持ベルト２４を巻き取る回転方向（第４
図の時計方向）に巻き取りドラム１７を付勢するばね２
０が介在され、このばね２０が伸たことを検知するリミ
ットスイッチ２１が以下のようにして回転軸６に設けら
れている。即ち、突起１８の近くに回転軸６に凹所２２
が形成され、この凹所２２にリミットスイッチ２１の本
体が納められ、リミットスイッチ２１の接触子２１ａが
突起１８の側方において切り欠き１９内に突出してい
る。このリミットスイッチ２１は、ばね２０が圧縮され
て、突起１８が切り欠き１９のばね受け側面１９ａに当
接しているとき、その側面１９ａに接触子２１ａを当接
させて、その状態でＯＮ状態となるようになされ、他
方、ばね２０が伸び、突起１８がばね受け側面１９ａと
逆の側面に当ると、接触子２１ａをばね受け側面１９ａ
から外し、その状態でＯＦＦ状態となるようになされて
いる。なお、リミットスイッチ２１を巻き取りドラム１
７に設けるようにしてもよい。また、リミットスイッチ
２１に代えて、光電スイッチ等を使用してもよい。A pair of take-up drums 17 are fitted to each of the rotating shafts 6 so as to form a predetermined rotational play with respect to the rotating shaft 6 by the following configuration. As shown in FIG. 3 and FIG. 4, the winding drum 17 is attached to the rotary shaft 6.
Are provided correspondingly to the winding drums 17 so that the projections 18 form a play in the rotational direction.
It is fitted in the notch 19 formed in the. The spring bearing portion of the protrusion 18 and the spring bearing side surface 19a of the notch 19
In addition, the rotation direction (fourth
Spring 2 for biasing the winding drum 17 in the clockwise direction in the figure
A limit switch 21 for detecting extension of the spring 20 is provided on the rotary shaft 6 in the following manner. That is, a recess 22 is formed in the rotary shaft 6 near the protrusion 18.
The main body of the limit switch 21 is housed in the recess 22, and the contact 21a of the limit switch 21 projects into the notch 19 on the side of the protrusion 18. This limit switch 21 makes contact with the contact 21a to the side surface 19a of the notch 19 when the spring 20 is compressed and the projection 18 is in contact with the spring receiving side surface 19a of the notch 19, and is in the ON state in that state. On the other hand, when the spring 20 extends and the protrusion 18 hits the side surface opposite to the spring receiving side surface 19a, the contact 21a is moved to the spring receiving side surface 19a.
It is designed to be turned off in that state. In addition, the limit switch 21 is wound on the drum 1
7 may be provided. Further, a photoelectric switch or the like may be used instead of the limit switch 21.
前記巻き取りドラム１７に吊持ベルト（吊持チェーン等
も含む）２４が同時に巻き取り・巻き戻し自在に設けら
れ、これら吊持ベルト２４の下端に昇降枠２５が設けら
れ、この昇降枠２５には物品保持用のロボットハンド２
６が設けられている。A suspending belt (including a suspending chain and the like) 24 is simultaneously provided on the winding drum 17 so as to be able to be wound and unwound at the same time, and an elevating frame 25 is provided at the lower end of these suspending belts 24. Is a robot hand 2 for holding articles
6 is provided.
（実施例の作用） 吊持ベルト２４が張った通常の状態にあっては、巻き取
りドラム１７に第４図において矢印Ａ方向の回転力が作
用しているので、ばね２０が圧縮されて、突起１８が切
り欠き１９のばね受け側面１９ａに当接した状態にあ
る。そして、その状態においては、リミットスイッチ２
１がＯＮ状態であるので、そのことをもって吊持ベルト
２４が張った状態にあることが検知出来る。(Operation of Embodiment) In a normal state in which the suspension belt 24 is stretched, since the rotating force in the direction of arrow A in FIG. 4 acts on the winding drum 17, the spring 20 is compressed, The protrusion 18 is in contact with the spring receiving side surface 19 a of the notch 19. And in that state, the limit switch 2
Since 1 is in the ON state, it is possible to detect that the suspension belt 24 is in the tensioned state.
他方、吊持ベルト２４が弛むと、ばね２０の力によって
巻き取りドラム１７に第４図において矢印Ｂ方向の回転
力が作用するので、ばね２０が伸て、突起１８がばね受
け側面１９ａと逆の側面に当り、接触子２１ａがばね受
け側面１９ａから外れる。そして、その状態において、
リミットスイッチ２１がＯＦＦ状態となるので、そのこ
とをもって、吊持ベルト２４が弛んだことが検知出来
る。On the other hand, when the suspension belt 24 is loosened, the force of the spring 20 causes a rotational force in the direction of the arrow B in FIG. 4 to act on the winding drum 17, so that the spring 20 extends and the protrusion 18 is opposite to the spring receiving side surface 19a. The contact 21a comes off from the spring receiving side surface 19a. And in that state,
Since the limit switch 21 is in the OFF state, it is possible to detect that the hanging belt 24 is slack.
（考案の効果） この考案は、前記の如き構成によって、以下の如き効果
を奏する。(Effects of the Invention) With the above-described configuration, the present invention has the following effects.
回転軸各々に所要個の巻き取りドラムが、回転軸に対し
て所定の回転方向遊びを形成するようにして嵌められ、
これら巻き取りドラムに巻き取り・巻き戻し自在となさ
れた吊持ベルトの下端に昇降枠が設けられ、前記巻き取
りドラムと回転軸との間に、吊持ベルトを巻き取る回転
方向に巻き取りドラムを付勢するばねが介在され、この
ばねが伸たことを検知する検知器が巻き取りドラム又は
回転軸に設けられているので、吊持ベルトの緩み、換言
すれば昇降枠の危険な傾きをいち早く検知することが出
来る。The required number of winding drums are fitted to each of the rotating shafts so as to form a predetermined rotational play with respect to the rotating shafts.
An elevating frame is provided at the lower end of a suspension belt that can be freely wound and rewound on these winding drums, and a winding drum is wound between the winding drum and the rotating shaft in the rotation direction for winding the suspension belt. Since a spring for urging the spring is interposed and a detector for detecting the extension of this spring is provided on the winding drum or the rotating shaft, the hanging belt is loosened, in other words, the dangerous tilt of the elevating frame is prevented. It can be detected quickly.
図面はこの考案の実施例を示すものであって、第１図は
側面図、第２図は第１図II−II線に沿う中間省略の拡大
断面図、第３図は第２図III−III線拡大断面図、第４図
は第３図IV−IV線断面図である。 ４……走行車、６……回転軸、１７……巻き取りドラ
ム、２０……ばね、２１……リミットスイッチ、２１ａ
……接触子、２４……吊持ベルト、２５……昇降枠1 shows a side view of the present invention, FIG. 2 is an enlarged cross-sectional view of FIG. 1 taken along the line II-II with an intermediate omitted, and FIG. III line enlarged sectional view, FIG. 4 is IV-IV line sectional view of FIG. 4 ... traveling vehicle, 6 ... rotating shaft, 17 ... winding drum, 20 ... spring, 21 ... limit switch, 21a
...... Contactor, 24 …… Suspension belt, 25 …… Elevating frame
Claims (2)
る、少なくとも２本の回転軸が回転自在に設けられ、こ
れら回転軸各々には所要個の巻き取りドラムが、回転軸
に対して所定の回転方向遊びを形成するようにして嵌め
られ、これら巻き取りドラムに巻き取り・巻き戻し自在
となされた吊持ベルトの下端に昇降枠が設けられ、前記
巻き取りドラムと回転軸との間に、吊持ベルトを巻き取
る回転方向に巻き取りドラムを付勢するばねが介在さ
れ、このばねが伸たことを検知する検知器が巻き取りド
ラム又は回転軸に設けられているオーバーヘッド型物品
搬送装置の昇降枠吊持ベルトの弛み検知装置。1. At least two rotary shafts, which rotate interlockingly with a traveling vehicle running above, are rotatably provided, and each of these rotary shafts has a required number of winding drums with respect to the rotary shafts. An elevating frame is provided at the lower end of a hanging belt which is fitted so as to form a predetermined play in the rotational direction and which can be freely wound and unwound on these winding drums, and is provided between the winding drum and the rotating shaft. A spring for urging the take-up drum in the rotational direction for taking up the suspension belt is interposed in the above, and a detector for detecting the extension of the spring is provided on the take-up drum or the rotary shaft. Lifting frame of device Lifting belt slack detection device.
項１記載のオーバーヘッド型物品搬送装置の昇降枠吊持
ベルトの弛み検知装置。2. The slack detecting device for the lifting frame suspension belt of an overhead type article transporting device according to claim 1, wherein the detector is a limit switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3112989U JPH0615962Y2 (en) | 1989-03-18 | 1989-03-18 | Lifting frame suspension belt slack detection device for overhead type article carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3112989U JPH0615962Y2 (en) | 1989-03-18 | 1989-03-18 | Lifting frame suspension belt slack detection device for overhead type article carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02124989U JPH02124989U (en) | 1990-10-15 |
| JPH0615962Y2 true JPH0615962Y2 (en) | 1994-04-27 |
Family
ID=31533863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3112989U Expired - Lifetime JPH0615962Y2 (en) | 1989-03-18 | 1989-03-18 | Lifting frame suspension belt slack detection device for overhead type article carrier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0615962Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006219254A (en) * | 2005-02-10 | 2006-08-24 | Kito Corp | Two-place suspension chain hoisting device |
-
1989
- 1989-03-18 JP JP3112989U patent/JPH0615962Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02124989U (en) | 1990-10-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |