JPH0639283B2 - Overload detection device for stacking machine - Google Patents
Overload detection device for stacking machineInfo
- Publication number
- JPH0639283B2 JPH0639283B2 JP29805388A JP29805388A JPH0639283B2 JP H0639283 B2 JPH0639283 B2 JP H0639283B2 JP 29805388 A JP29805388 A JP 29805388A JP 29805388 A JP29805388 A JP 29805388A JP H0639283 B2 JPH0639283 B2 JP H0639283B2
- Authority
- JP
- Japan
- Prior art keywords
- load
- chain
- detection device
- overload detection
- carriage
- 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
- Forklifts And Lifting Vehicles (AREA)
- Warehouses Or Storage Devices (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は荷の棚積機械における過負荷検出装置に関する
ものである。TECHNICAL FIELD The present invention relates to an overload detection device in a load stacking machine.
従来のこの種の過負荷検出装置としては、第４図に示す
ように、荷１を吊り上げるチェーン２とキャリジ３のブ
ラケット４との間にロードセル５を介在させ、このロー
ドセル５が検出した荷重信号をケーブル６を経てロード
セルアンプ７に送り重量オーバーを検出して、警報を出
すようにしていた。As shown in FIG. 4, a conventional overload detecting device of this type has a load cell 5 interposed between a chain 2 for lifting a load 1 and a bracket 4 of a carriage 3, and a load signal detected by the load cell 5 is inserted. Was sent to the load cell amplifier 7 via the cable 6 to detect an overweight, and an alarm was issued.
しかし、ロードセル５やロードセルアンプ７は形状が大
きく、取付けにくいし、またコストが高くなるなどの欠
点があった。However, the load cell 5 and the load cell amplifier 7 have disadvantages such as large shape, difficulty in mounting, and high cost.
本発明は上記の事情に鑑みなされたものであって、その
目的とするところは従来装置に用いたロードセル、ロー
ドセルアンプなどが不用になって、これら部材の取付け
難さやコスト高になる欠点を改善することができる棚積
機械における過負荷検出装置を提供することにある。The present invention has been made in view of the above circumstances, and an object thereof is to improve the drawback that the load cell, the load cell amplifier and the like used in the conventional device become unnecessary, and it becomes difficult to attach these members and the cost becomes high. An object of the present invention is to provide an overload detection device in a shelving machine that can be used.
上記の目的を達成するために本発明は、荷を吊る吊りチ
ェーンの荷重による伸びを吊りチェーンの自由端側のチ
ェーンエンドと荷を載せるキャリッジとの相対位置を検
出手段で検出するようにした。In order to achieve the above-mentioned object, the present invention is configured to detect the relative position between the chain end on the free end side of the hanging chain and the carriage on which the load is placed, by means of the detecting means for detecting the elongation of the hanging chain for hanging the load.
以下、本発明の実施例を第１図乃至第３図に基づいて説
明する。An embodiment of the present invention will be described below with reference to FIGS.
荷の棚積み機械Ａは、第１図に示すようにフレーム１０
を備えており、フレーム１０はにマスト１１が立設して
あり、マスト１１の頂部にはスプロケット１２が軸支し
てあり、またフレーム１０にはスプロケット１３，１４
が同一軸で設けてある。The load stacking machine A has a frame 10 as shown in FIG.
The frame 10 is provided with a mast 11 standing upright, a sprocket 12 is rotatably supported on the top of the mast 11, and the frame 10 has sprockets 13, 14 attached thereto.
Are provided on the same axis.
フレーム１０には無励磁ブレーキ付の電動機１５が取付
けてあり、この電動機１５の回転軸１６にはスプロケッ
ト１７が取付けてあり、このスプロケット１７と前記ス
プロケット１４とに無端状のチェーン１８が掛けてあ
る。An electric motor 15 with a non-excitation brake is attached to the frame 10, a sprocket 17 is attached to a rotary shaft 16 of the electric motor 15, and an endless chain 18 is hung on the sprocket 17 and the sprocket 14. .
荷１９のキャリジ２０の背部には、上、下側のブラケッ
ト２１，２２とばね係止体２３とが固着してある。The upper and lower brackets 21 and 22 and the spring locking body 23 are fixed to the back of the carriage 20 of the load 19.
前記スプロケット１２，１３には吊りチェーン２４が掛
けてあり、この吊りチェーン２４の一端部は上側のブラ
ケット２１にチェーン固定ピン３４を介して係止してあ
り、吊りチェーン２４の他端部は、ボルト状のチェーン
エンド２５に係止してある。このチェーンエンド２５は
下側ブラケット２２の孔２６を貫通しており、チェーン
エンド２５の上端部には固定ナット２７によりプレート
２８が取付けてあり、このプレート２８の両端部は上方
に向けて折曲げられている。A suspension chain 24 is hung on the sprockets 12 and 13, one end of the suspension chain 24 is locked to the upper bracket 21 via a chain fixing pin 34, and the other end of the suspension chain 24 is It is locked to a bolt-shaped chain end 25. The chain end 25 penetrates the hole 26 of the lower bracket 22, and a plate 28 is attached to the upper end of the chain end 25 by a fixing nut 27. Both ends of the plate 28 are bent upward. Has been.
そして、一方の折曲部２９にはばね３０の下端部が係止
してあり、ばね３０の上端部は前記ばね係止体２３に係
止してある。The lower end of the spring 30 is locked to the bent portion 29, and the upper end of the spring 30 is locked to the spring locking body 23.
前記下側ブラケット２２には、支持体３１を介して検出
手段である光電式スイッチ３２が取付けてあり、光電ス
イッチ３２の光軸イを前記プレート２８の折曲部３３が
遮ぎると当該光電式スイッチ３２が作動し、この光電式
スイッチ３２に接続された警報ブザー３５が鳴るように
してある。A photoelectric switch 32, which is a detection means, is attached to the lower bracket 22 via a support body 31. When the optical axis B of the photoelectric switch 32 is blocked by the bent portion 33 of the plate 28, the photoelectric switch 32 is attached. 32 is activated and an alarm buzzer 35 connected to the photoelectric switch 32 is activated.
次に作動を説明する。Next, the operation will be described.
電動機１５に通電して、これを駆動し、スプロケット１
６、チェーン１８、スプロケット１３，１４を介して吊
りチェーン２４を走行させて前記キャリジ２０を上方に
移動し、荷１９を上昇させる。The electric motor 15 is energized and driven to drive the sprocket 1
6, the suspension chain 24 is moved through the chain 18, the sprockets 13 and 14, the carriage 20 is moved upward, and the load 19 is raised.
この状態で電動機１５への通電を遮断すると、電動機１
５の回転は停止すると共に、電動機１５にブレーキ力を
生じ、キャリジ２０は停止する。If the power supply to the electric motor 15 is cut off in this state, the electric motor 1
The rotation of 5 stops, the braking force is generated in the electric motor 15, and the carriage 20 stops.
この時、吊りチェーン２４はスプロケット１４及びキャ
リジ２０のチェーン固定ピン３４を固定端として荷１９
の重量に応じた伸びを生じることになる。At this time, the hanging chain 24 uses the sprocket 14 and the chain fixing pin 34 of the carriage 20 as a fixed end to load the load 19.
Elongation will occur according to the weight of.
この吊りチェーン２４の伸びは、キャリジ２０を上方へ
押し下げる方向に働くため、吊りチェーン２４のもう一
方の固定端である、キャリジ２０の下側ブラケット２２
とチェーンエンド２５の固定ナット２７の間に隙間ｔを
生じさせる。この隙間ｔは吊りチェーンの伸びに応じた
値となる。Since the extension of the suspension chain 24 acts in the direction of pushing the carriage 20 upward, the lower bracket 22 of the carriage 20, which is the other fixed end of the suspension chain 24.
A gap t is created between the fixed nut 27 of the chain end 25 and the chain end 25. This gap t has a value corresponding to the extension of the suspension chain.
この隙間ｔを計ることにより荷の重量オーバーを検出す
ることになる。By measuring this gap t, it is possible to detect the overload of the load.
すなわち、吊りチェーン２４の伸びは前記プレート２８
を移動させて、これの屈曲部３３が光電式スイッチ３２
の光軸イを遮えぎると、この光電式スイッチ３２が作動
して警報ブザー３５が鳴り、荷の重量オーバーを警告す
る。That is, the extension of the suspension chain 24 depends on the plate 28.
Is moved, and the bent portion 33 of this is moved to the photoelectric switch 32.
When the optical axis B is blocked, the photoelectric switch 32 operates and the alarm buzzer 35 sounds to warn that the weight of the load is over.
以上詳述したように、本発明に係る棚積機械における過
負荷検出装置は、荷を吊る吊りチェーンの荷重による伸
びを吊りチェーンの自由端側のチェーンエンドと荷を載
せるキャリッジとの相対位置を検出手段で検出するよう
にしたことを特徴とするものである。As described in detail above, the overload detection device in the shelving machine according to the present invention determines the relative position between the chain end on the free end side of the hanging chain and the carriage on which the load is placed by the elongation due to the load of the hanging chain. It is characterized in that the detection means is used for detection.
したがって、従来装置に用いたロードセル、ロードセル
アンプなどが不用になって、これら部材の取付け難さや
コスト高になる欠点を改善することができる。Therefore, the load cell, load cell amplifier, and the like used in the conventional device become unnecessary, and it is possible to improve the drawback that the attachment of these members becomes difficult and the cost becomes high.
第１図は本発明に係る過負荷検出装置を具備した荷の棚
積機械の側面図、第２図は本発明一実施例の側面図、第
３図は同平面図、第４図は従来の過負荷検出装置を具備
した、荷の棚積機械の側面図である。 １９は荷、２０はキャリジ、２４は吊りチェーン、２５
はチェーンエンド、２７は固定ナット、２８はプレー
ト、３０はばね、３２は光電式スイッチ。FIG. 1 is a side view of a load stacking machine equipped with an overload detection device according to the present invention, FIG. 2 is a side view of an embodiment of the present invention, FIG. 3 is a plan view of the same, and FIG. It is a side view of the load shelving machine provided with the overload detection apparatus of FIG. 19 is a load, 20 is a carriage, 24 is a hanging chain, 25
Is a chain end, 27 is a fixed nut, 28 is a plate, 30 is a spring, and 32 is a photoelectric switch.
Claims (1)
吊りチェーンの自由端側のチェーンエンドと荷を載せる
キャリジとの相対位置を検出手段で検出するようにした
ことを特徴とする棚積機械における過負荷検出装置。1. A shelving machine, characterized in that the elongation due to the load of a suspension chain for suspending a load is detected by a detecting means for detecting the relative position between the chain end on the free end side of the suspension chain and the carriage on which the load is placed. Overload detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29805388A JPH0639283B2 (en) | 1988-11-28 | 1988-11-28 | Overload detection device for stacking machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29805388A JPH0639283B2 (en) | 1988-11-28 | 1988-11-28 | Overload detection device for stacking machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02144307A JPH02144307A (en) | 1990-06-04 |
| JPH0639283B2 true JPH0639283B2 (en) | 1994-05-25 |
Family
ID=17854522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29805388A Expired - Lifetime JPH0639283B2 (en) | 1988-11-28 | 1988-11-28 | Overload detection device for stacking machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0639283B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100850319B1 (en) * | 2007-03-30 | 2008-08-04 | 정성욱 | Weight sensing apparatus of lift |
| CN102173362A (en) * | 2010-11-23 | 2011-09-07 | 江苏速升自动化装备系统工程有限公司 | Microstroke measuring method and device |
| JP2012166903A (en) * | 2011-02-15 | 2012-09-06 | Tcm Corp | Maintenance timing notification device for lift chain |
| JP5477664B2 (en) * | 2011-04-14 | 2014-04-23 | 株式会社ダイフク | Article conveying device |
| BE1022016B1 (en) | 2013-09-06 | 2016-02-04 | N & B Knauf Et Cie S.C.S./E.C.V. | LIFTING DEVICE |
| CN106477476B (en) * | 2016-12-27 | 2018-11-09 | 国网山东省电力公司临沂供电公司 | Electric power electrical verification maintenance ladder |
-
1988
- 1988-11-28 JP JP29805388A patent/JPH0639283B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02144307A (en) | 1990-06-04 |
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