JP5772520B2 - Belt conveyor meander prevention device - Google Patents

Belt conveyor meander prevention device Download PDF

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JP5772520B2
JP5772520B2 JP2011243249A JP2011243249A JP5772520B2 JP 5772520 B2 JP5772520 B2 JP 5772520B2 JP 2011243249 A JP2011243249 A JP 2011243249A JP 2011243249 A JP2011243249 A JP 2011243249A JP 5772520 B2 JP5772520 B2 JP 5772520B2
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belt conveyor
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conveyor
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JP2013095594A (en
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琢也 赤▲崎▼
琢也 赤▲崎▼
英司 半田
英司 半田
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JFE Steel Corp
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Description

本発明は、ベルトコンベヤ蛇行防止装置に関し、特に上流のベルトコンベヤと下流のベルトコンベヤを交差させ、上流のベルトコンベヤの端部から下流のベルトコンベヤに積荷を落下して移載する場合に好適なものである。   The present invention relates to a belt conveyor meandering prevention device, and particularly suitable for a case where an upstream belt conveyor and a downstream belt conveyor are crossed, and a load is dropped from the end of the upstream belt conveyor to the downstream belt conveyor for transfer. Is.

製鉄業においては、鉄鉱石、石炭などの粉粒塊状物が船舶によって輸送されてくる。これらの原料はアンローダなどの設備によって陸揚げされ、原料ヤードまでベルトコンベヤで搬送される。これらの粉粒塊状物を目的の位置まで連続搬送するベルトコンベヤは、長いもので1000m程度あり、積載される粉粒塊状物の積荷の重心がベルトコンベヤの搬送方向と直交方向(以下、幅方向とも記す)に偏るとベルトが蛇行し、ベルト蛇行によるトラブルが発生するおそれがある。   In the steel industry, iron ore, coal and other granular materials are transported by ship. These raw materials are landed by equipment such as an unloader and conveyed to a raw material yard by a belt conveyor. The belt conveyor that continuously conveys these granular agglomerates to the target position is about 1000 m long, and the center of gravity of the loaded granular agglomerate is perpendicular to the conveying direction of the belt conveyor (hereinafter referred to as the width direction). If it is biased, the belt will meander and troubles may occur due to the meandering of the belt.

上流のベルトコンベヤから下流のベルトコンベヤに積荷を移載する方式としては、上流のベルトコンベヤの搬送方向と下流のベルトコンベヤの搬送方向を同じにして上流のベルトコンベヤの端部から下流のベルトコンベヤに積荷を落下させる方式と、上流のベルトコンベヤと下流のベルトコンベヤを交差させて上流のベルトコンベヤの端部から下流のベルトコンベヤに積荷を落下させる方式があり、後者の方式ではベルトの幅方向に積荷の重心の偏りが発生しやすく、結果的にベルトが蛇行しやすい。   As a method of transferring the load from the upstream belt conveyor to the downstream belt conveyor, the conveying direction of the upstream belt conveyor and the conveying direction of the downstream belt conveyor are the same, and the belt conveyor downstream from the end of the upstream belt conveyor. There is a method of dropping the load on the belt and a method of dropping the load from the end of the upstream belt conveyor to the downstream belt conveyor by crossing the upstream belt conveyor and the downstream belt conveyor. In the latter method, the width direction of the belt In addition, the center of gravity of the load tends to be biased, and as a result, the belt tends to meander.

このようなベルトの蛇行対策として、従来は上流のベルトコンベヤを積荷搬送方向、つまり下流のベルトコンベヤの幅方向に移動可能な所謂シャトルコンベヤとし、上流側のベルトコンベヤを下流のベルトコンベヤの幅方向に移動させて下流のベルトコンベヤのベルト上の積荷の重心を調整する方式がある。しかしながら、このシャトルコンベヤ方式は、上流のベルトコンベヤを移動するための設備、つまりレールや駆動装置などが必要となり、構造が大がかりでコストもかかる。   As a countermeasure against such meandering of the belt, conventionally, the upstream belt conveyor is a so-called shuttle conveyor that can move in the load conveying direction, that is, the width direction of the downstream belt conveyor, and the upstream belt conveyor is the width direction of the downstream belt conveyor. There is a method of adjusting the center of gravity of the load on the belt of the downstream belt conveyor by moving the belt to the downstream. However, this shuttle conveyor system requires equipment for moving the upstream belt conveyor, that is, a rail, a driving device, and the like, and has a large structure and costs.

これに対し、例えば下記特許文献1に記載される方式では、上流のベルトコンベヤの積荷落下端部の搬送方向先方に落下位置規制板を設け、下流のベルトコンベヤのベルトの端部にテーパ状ローラを設け、このテーパ状ローラの回転速度からベルトの蛇行量を検出し、その蛇行量に応じて落下位置規制番の位置を制御することで下流のベルトコンベヤのベルト上の積荷の重心を調整するようにしている。   On the other hand, for example, in the method described in Patent Document 1 below, a drop position regulating plate is provided in the transport direction ahead of the load falling end of the upstream belt conveyor, and a tapered roller is provided at the belt end of the downstream belt conveyor. And the center of gravity of the load on the belt of the downstream belt conveyor is adjusted by detecting the meandering amount of the belt from the rotational speed of the tapered roller and controlling the position of the drop position regulation number according to the meandering amount. I am doing so.

特開平5−213431号公報JP-A-5-213431

しかしながら、前記特許文献1に記載されるベルトコンベヤ蛇行防止装置では、落下位置調整板の積荷が衝突するため、粉塵が飛散しやすく、可動部に粉塵が付着して不動となり、故障するという問題がある。また、落下位置調整板に積荷が付着して板厚が変化し、その結果、積荷の落下点が変化してしまうという問題もある。
本発明は、上記のような問題点に着目してなされたものであり、板などに非接触で積荷の落下位置を調整することにより故障や積荷落下点変化の問題を回避することが可能なベルトコンベヤ蛇行防止装置を提供することを目的とするものである。
However, in the belt-conveyor meandering prevention device described in Patent Document 1, the load on the drop position adjusting plate collides, so that the dust is likely to be scattered, and the movable part is stuck and becomes immobile and malfunctions. is there. There is also a problem that the load adheres to the drop position adjusting plate and the plate thickness changes, and as a result, the drop point of the load changes.
The present invention has been made paying attention to the above-mentioned problems, and it is possible to avoid problems such as breakdowns and changes in the load drop point by adjusting the load drop position without contact with a plate or the like. An object of the present invention is to provide a belt conveyor meandering prevention device.

上記課題を解決するために、本発明のベルトコンベヤ蛇行防止装置は、上流のベルトコンベヤと下流のベルトコンベヤとを交差させて前記上流のベルトコンベヤの端部から下流のベルトコンベヤに積荷を落下して移載する場合に下流のベルトコンベヤのベルトの蛇行を防止するベルトコンベヤ蛇行防止装置であって、下流のベルトコンベヤのベルトの蛇行量を検出する蛇行量検出手段と、前記蛇行量検出手段で検出された下流のベルトコンベヤのベルトの蛇行量に基づいて上流のベルトコンベヤのベルトの速度を制御する上流ベルト速度制御手段とを備えたことを特徴とするものである。   In order to solve the above-mentioned problems, the belt conveyor meander prevention device of the present invention crosses an upstream belt conveyor and a downstream belt conveyor to drop a load from an end of the upstream belt conveyor onto the downstream belt conveyor. A belt conveyor meandering prevention device for preventing the meandering of the belt of the downstream belt conveyor when transferring, the meandering amount detecting means for detecting the meandering amount of the belt of the downstream belt conveyor, and the meandering amount detecting means. And an upstream belt speed control means for controlling the speed of the belt of the upstream belt conveyor based on the detected meandering amount of the belt of the downstream belt conveyor.

また、前記下流のベルトコンベヤのベルトが上流のベルトコンベヤの積荷搬送方向先方側に蛇行している場合に上流のベルトコンベヤのベルトの速度を大きくし、前記下流のベルトコンベヤのベルトが上流のベルトコンベヤの積荷搬送方向手前側に蛇行している場合に上流のベルトコンベヤのベルトの速度を小さくすることを特徴とするものである。
また、前記上流のベルトコンベヤのベルトの速度の変更は予め設定された所定の速度変化率で行うことを特徴とするものである。
In addition, when the belt of the downstream belt conveyor meanders in the load conveyance direction ahead of the upstream belt conveyor, the speed of the belt of the upstream belt conveyor is increased, and the belt of the downstream belt conveyor becomes the upstream belt. The belt speed of the upstream belt conveyor is reduced when meandering toward the front side of the conveyor in the load conveyance direction.
Further, the speed change of the belt of the upstream belt conveyor is performed at a predetermined speed change rate set in advance.

而して、本発明のベルトコンベヤ蛇行防止装置によれば、上流のベルトコンベヤと下流のベルトコンベヤとを交差させて上流のベルトコンベヤの端部から下流のベルトコンベヤに積荷を落下して移載する場合に、下流のベルトコンベヤのベルトの蛇行量を蛇行量検出手段で検出し、検出された下流のベルトコンベヤのベルトの蛇行量に基づいて上流のベルトコンベヤのベルトの速度を上流ベルト速度制御手段で制御する構成としたため、板などに非接触で積荷の落下位置を調整することができ、その結果、故障や積荷落下点変化の問題を回避することができる。   Thus, according to the belt conveyor meandering prevention apparatus of the present invention, the upstream belt conveyor and the downstream belt conveyor are crossed and the load is dropped from the end of the upstream belt conveyor to the downstream belt conveyor and transferred. In this case, the meandering amount detection means detects the meandering amount of the belt of the downstream belt conveyor, and the upstream belt speed control is performed on the upstream belt conveyor based on the detected meandering amount of the downstream belt conveyor. Since the configuration is controlled by the means, it is possible to adjust the drop position of the load in a non-contact manner with a plate or the like, and as a result, it is possible to avoid the problem of failure or change of the load drop point.

また、下流のベルトコンベヤのベルトが上流のベルトコンベヤの積荷搬送方向先方側に蛇行している場合に上流のベルトコンベヤのベルトの速度を大きくし、下流のベルトコンベヤのベルトが上流のベルトコンベヤの積荷搬送方向手前側に蛇行している場合に上流のベルトコンベヤのベルトの速度を小さくすることにより、下流のベルトコンベヤのベルトの蛇行の方向と蛇行量に応じて当該下流のベルトコンベヤのベルトの蛇行を抑制するように上流のベルトコンベヤのベルトの速度を自動制御することができる。
また、上流のベルトコンベヤのベルトの速度の変更は予め設定された所定の速度変化率で行うことにより、積荷の下流のベルトコンベヤへの落下位置が乱れにくい。
In addition, when the belt of the downstream belt conveyor meanders in the direction of the load conveyance direction of the upstream belt conveyor, the speed of the belt of the upstream belt conveyor is increased, and the belt of the downstream belt conveyor By reducing the belt speed of the upstream belt conveyor when meandering in the front side of the load conveyance direction, the belt of the downstream belt conveyor according to the direction and amount of meandering of the belt of the downstream belt conveyor. The belt speed of the upstream belt conveyor can be automatically controlled to suppress meandering.
In addition, by changing the belt speed of the upstream belt conveyor at a predetermined speed change rate set in advance, the drop position of the load onto the belt conveyor downstream is hardly disturbed.

本発明のベルトコンベヤ蛇行防止装置の一実施形態を示す概略構成図である。It is a schematic block diagram which shows one Embodiment of the belt conveyor meander prevention apparatus of this invention. 図1のベルトコンベヤ蛇行防止装置の作用の説明図である。It is explanatory drawing of an effect | action of the belt conveyor meander prevention apparatus of FIG.

次に、本発明のベルトコンベヤ蛇行防止装置の一実施形態について図面を参照しながら説明する。
図1は、本実施形態のベルトコンベヤ蛇行防止装置の概略構成図である。このベルトコンベヤ搬送システムは、例えば(スタック)リクレーマと呼ばれ、アンローダにより船舶から陸揚げされた積荷をベルトコンベヤに次々に移載して、最終的に原料ヤードに搬送するものである。図には、上下流3つのベルトコンベヤが記載されているだけであるが、実際には更に多くの、或いは更に長いベルトコンベヤが配置されている。
Next, an embodiment of the belt conveyor meander prevention device of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a belt conveyor meandering prevention apparatus according to the present embodiment. This belt conveyor transport system is called, for example, a (stack) reclaimer, and loads loaded from a ship by an unloader are successively transferred onto a belt conveyor and finally transported to a raw material yard. Although only three belt conveyors are shown in the figure, in reality, more or longer belt conveyors are arranged.

図では、最上流ベルトコンベヤ10から上流ベルトコンベヤ1、下流ベルトコンベヤ2の順に積荷が移載される。最上流ベルトコンベヤ10と上流ベルトコンベヤ1は積荷の搬送方向が同一方向であるが、上流ベルトコンベヤ1と下流ベルトコンベヤ2は積荷の搬送方向が交差(直交)している。前述のように、上下のベルトコンベヤの積荷の搬送方向が交差している場合に上流のベルトコンベヤの端部から下流のベルトコンベヤに落下して移載される積荷の重心がベルトコンベヤの幅方向(積荷搬送方向直交方向)に偏りやすくなり、下流のベルトコンベヤのベルトが蛇行しやすくなるため、本実施形態では下流ベルトコンベヤ2の下流ベルト4の蛇行を抑制すべく、上流ベルトコンベヤ1の上流ベルト3の速度を制御する。   In the figure, the load is transferred from the most upstream belt conveyor 10 to the upstream belt conveyor 1 and the downstream belt conveyor 2 in this order. The uppermost belt conveyor 10 and the upstream belt conveyor 1 have the same load conveyance direction, but the upstream belt conveyor 1 and the downstream belt conveyor 2 intersect (orthogonal) the load conveyance direction. As described above, the center of gravity of the load dropped and transferred from the end of the upstream belt conveyor to the downstream belt conveyor when the transport direction of the load of the upper and lower belt conveyors intersects the width direction of the belt conveyor In this embodiment, in order to suppress the meandering of the downstream belt 4 of the downstream belt conveyor 2, the upstream belt conveyor 1 is arranged upstream of the upstream belt conveyor 1. The speed of the belt 3 is controlled.

具体的には、トラフ状の下流ベルトコンベヤ2の下流ベルト4の蛇行量を蛇行センサ5で検出する。蛇行センサ5には、例えば光学式スイッチを下流ベルト4の幅方向端部に当該ベルト幅方向に並べて配設したり、下流ベルト4の幅方向端部の位置を画像処理で検出したり、下流ベルト4の幅方向端部に当接するローラやガイドの位置をポテンショメータで検出したりする周知の方式が用いられる。なお、蛇行量には、下流ベルト4の蛇行の方向も含まれる。蛇行センサ5で検出された下流ベルトコンベヤ2の下流ベルト4の蛇行量は制御装置6に入力される。制御装置6は、例えばホストコンピュータなどの演算処理装置を備え、蛇行量に応じた回転速度で上流ベルトコンベヤ1の上流ベルト3の駆動モータ7を制御することにより、下流ベルトコンベヤ2の下流ベルト4の蛇行を是正する。   Specifically, the meandering amount of the downstream belt 4 of the trough-shaped downstream belt conveyor 2 is detected by the meandering sensor 5. In the meandering sensor 5, for example, an optical switch is arranged in the width direction end of the downstream belt 4 in the belt width direction, the position of the width direction end of the downstream belt 4 is detected by image processing, or the downstream A well-known method is used in which the position of a roller or a guide that abuts against the end of the belt 4 in the width direction is detected by a potentiometer. The meandering amount includes the meandering direction of the downstream belt 4. The amount of meandering of the downstream belt 4 of the downstream belt conveyor 2 detected by the meandering sensor 5 is input to the control device 6. The control device 6 includes an arithmetic processing device such as a host computer, for example, and controls the drive motor 7 of the upstream belt 3 of the upstream belt conveyor 1 at a rotational speed corresponding to the amount of meandering, whereby the downstream belt 4 of the downstream belt conveyor 2 is controlled. Correct the meandering.

上流ベルトコンベヤ1の上流ベルト3の速度を変化させると、図2に示すように、上流ベルトコンベヤ1の端部から落下する積荷の落下軌跡が変化する。具体的に、上流ベルト3の速度が大きければ積荷はより遠くまで飛ぶように落下するし、上流ベルト3の速度が小さければ積荷は直ぐ近くに落下する。周知のように、トラフ型ベルトコンベヤのベルトは、積荷の重心変動でベルトが蛇行する。例えば図2の下流ベルト4の場合、積荷の重心が図の左側、つまり上流ベルト3の積荷搬送方向手前側にあると、下流ベルト4は図の右側、つまり上流ベルト3の積荷搬送方向先方側に蛇行する。逆に、積荷の重心が図の右側、つまり上流ベルト3の積荷搬送方向先方側にあると、下流ベルト4は図の左側、つまり上流ベルト3の積荷搬送方向手前側に蛇行する。積荷の重心を下流ベルト4の幅方向中央部に是正すれば下流ベルト4の蛇行も是正されるので、下流ベルト4が図2の右側、つまり上流ベルト3の積荷搬送方向先方側に蛇行している場合には上流ベルト3の速度を大きくし、下流ベルト4が図の左側、つまり上流ベルト3の積荷搬送方向手前側に蛇行している場合には上流ベルト3の速度を小さくすればよい。なお、上流ベルトコンベヤ1の上流ベルト3の速度が変化すると、上流ベルト3上の積荷の層の厚さも変化する。具体的に、上流ベルト3の速度が大きければ積荷の厚さは小さくなり、上流ベルト3の速度が小さければ積荷の厚さは大きくなる。これは、最上流ベルト10から上流ベルト1に移載される積荷の単位時間当たりの容量はほぼ一定であるためである。   When the speed of the upstream belt 3 of the upstream belt conveyor 1 is changed, the fall trajectory of the load falling from the end of the upstream belt conveyor 1 changes as shown in FIG. Specifically, if the speed of the upstream belt 3 is high, the load falls so as to fly farther, and if the speed of the upstream belt 3 is low, the load drops immediately. As is well known, the belt of a trough type belt conveyor meanders due to a change in the center of gravity of the load. For example, in the case of the downstream belt 4 in FIG. 2, if the center of gravity of the load is on the left side of the drawing, that is, the front side of the upstream belt 3 in the load conveyance direction, the downstream belt 4 is on the right side of the drawing, that is, the upstream belt 3 in the load conveyance direction. Meander. Conversely, when the center of gravity of the load is on the right side of the drawing, that is, the upstream side of the upstream belt 3 in the load conveyance direction, the downstream belt 4 meanders on the left side of the drawing, that is, the upstream side of the upstream belt 3 in the load conveyance direction. If the center of gravity of the load is corrected at the center of the downstream belt 4 in the width direction, the meandering of the downstream belt 4 is also corrected. Therefore, the downstream belt 4 meanders to the right side in FIG. If it is, the speed of the upstream belt 3 is increased, and if the downstream belt 4 meanders on the left side of the drawing, that is, the upstream belt 3 is meandering in the cargo transport direction, the speed of the upstream belt 3 may be decreased. When the speed of the upstream belt 3 of the upstream belt conveyor 1 changes, the thickness of the load layer on the upstream belt 3 also changes. Specifically, if the speed of the upstream belt 3 is large, the thickness of the load becomes small, and if the speed of the upstream belt 3 is small, the thickness of the load becomes large. This is because the capacity per unit time of the load transferred from the most upstream belt 10 to the upstream belt 1 is substantially constant.

この上流ベルトコンベヤ1の上流ベルト3から下流ベルトコンベヤ2の下流ベルト4への積荷の落下位置は、上流ベルト3から下流ベルト4への積荷の落下距離、上流ベルト3の速度によって決定する。例えば、上流ベルト3から下流ベルト4への積荷の落下時間は、落下時間=√(2×落下距離/重力加速度) で求められ、落下位置、即ち上流ベルト3の端部からの積荷の飛行距離は、飛行距離=落下時間×上流ベルト3の速度 で求められる。従って、例えば上流ベルト3の速度が1m/s、上流ベルト3から下流ベルト4への積荷の落下距離が5mである場合の落下時間は1s、飛行距離は1mとなるので、落下位置を100mm変化させるためには、上流ベルト3の速度を0.1m/s変化させればよい。   The dropping position of the load from the upstream belt 3 of the upstream belt conveyor 1 to the downstream belt 4 of the downstream belt conveyor 2 is determined by the falling distance of the load from the upstream belt 3 to the downstream belt 4 and the speed of the upstream belt 3. For example, the fall time of the load from the upstream belt 3 to the downstream belt 4 is obtained by the following formula: fall time = √ (2 × fall distance / gravity acceleration), and the fall position, that is, the flight distance of the load from the end of the upstream belt 3 Is obtained by flight distance = fall time × velocity of upstream belt 3. Therefore, for example, when the speed of the upstream belt 3 is 1 m / s, the drop distance of the load from the upstream belt 3 to the downstream belt 4 is 5 m, the drop time is 1 s and the flight distance is 1 m. In order to achieve this, the speed of the upstream belt 3 may be changed by 0.1 m / s.

また、下流ベルトコンベヤ2の下流ベルト4の蛇行量は、積荷の種類、下流ベルト4上の積荷の重心の位置、上流ベルト3から下流ベルト4への単位時間当たりの移載量(上流ベルト3の速度が変化しても単位時間当たりの移載量はほぼ一定)によってほぼ決まる。従って、下流ベルト4の蛇行量が分かれば、上流ベルト3の速度をどの程度変化すれば蛇行が抑制されるかが得られるので、その変化させるべき速度で上流ベルト3の速度を自動制御する。   The meandering amount of the downstream belt 4 of the downstream belt conveyor 2 includes the type of the load, the position of the center of gravity of the load on the downstream belt 4, and the transfer amount per unit time from the upstream belt 3 to the downstream belt 4 (upstream belt 3). The transfer amount per unit time is almost constant even if the speed of the image changes. Therefore, if the meandering amount of the downstream belt 4 is known, it can be obtained how much the speed of the upstream belt 3 is changed to suppress the meandering. Therefore, the speed of the upstream belt 3 is automatically controlled at the speed to be changed.

また、上流ベルトコンベヤ1の上流ベルト3の速度を変更する場合には、予め設定された所定変化率以下で比較的徐々に変更する。これは、上流ベルト3の速度の変化率が大きすぎると、上流ベルト3から下流ベルト4に落下する積荷の落下位置が乱れてしまい、適正な位置に積荷を落下させることができなくなるためである。勿論、オペレータが上流ベルト3の速度を調整することも可能である。   Further, when the speed of the upstream belt 3 of the upstream belt conveyor 1 is changed, the speed is changed relatively gradually at a predetermined change rate or less. This is because if the rate of change of the speed of the upstream belt 3 is too large, the drop position of the load falling from the upstream belt 3 to the downstream belt 4 is disturbed, and the load cannot be dropped to an appropriate position. . Of course, the operator can adjust the speed of the upstream belt 3.

このように本実施形態のベルトコンベヤ蛇行防止装置では、上流ベルトコンベヤ1と下流ベルトコンベヤ2とを交差させて上流ベルトコンベヤ1の端部から下流ベルトコンベヤ2に積荷を落下して移載する場合に、下流ベルトコンベヤ2の下流ベルト4の蛇行量を蛇行センサ5で検出し、検出された下流ベルトコンベヤ2の下流ベルト4の蛇行量に基づいて上流ベルトコンベヤ1の上流ベルト3の速度を制御装置6で制御することにより、板などに非接触で積荷の落下位置を調整することができ、その結果、故障や積荷落下点変化の問題を回避することができる。   As described above, in the belt conveyor meandering prevention apparatus of the present embodiment, when the upstream belt conveyor 1 and the downstream belt conveyor 2 are crossed, the load is dropped from the end of the upstream belt conveyor 1 to the downstream belt conveyor 2 and transferred. Further, the meandering amount of the downstream belt 4 of the downstream belt conveyor 2 is detected by the meandering sensor 5, and the speed of the upstream belt 3 of the upstream belt conveyor 1 is controlled based on the detected meandering amount of the downstream belt 4 of the downstream belt conveyor 2. By controlling with the apparatus 6, the drop position of the load can be adjusted in a non-contact manner with a plate or the like, and as a result, the problem of failure or change of the load drop point can be avoided.

また、下流ベルトコンベヤ2の下流ベルト4が上流ベルトコンベヤ1の積荷搬送方向先方側に蛇行している場合に上流ベルトコンベヤ1の上流ベルト3の速度を大きくし、下流ベルトコンベヤ2の下流ベルト4が上流ベルトコンベヤ1の積荷搬送方向手前側に蛇行している場合に上流ベルトコンベヤ1の上流ベルト3の速度を小さくすることにより、下流ベルトコンベヤ2の下流ベルト4の蛇行の方向と蛇行量に応じて当該下流ベルトコンベヤ2の下流ベルト4の蛇行を抑制するように上流ベルトコンベヤ1の上流ベルト3の速度を自動制御することができる。
また、上流ベルトコンベヤ1の上流ベルト3の速度の変更は予め設定された所定の速度変化率で行うことにより、積荷の下流ベルトコンベヤ2への落下位置が乱れにくい。
Further, when the downstream belt 4 of the downstream belt conveyor 2 is meandering in the load conveying direction of the upstream belt conveyor 1, the speed of the upstream belt 3 of the upstream belt conveyor 1 is increased, and the downstream belt 4 of the downstream belt conveyor 2 is increased. Is meandering in the direction of meandering and the amount of meandering of the downstream belt 4 of the downstream belt conveyor 2 by reducing the speed of the upstream belt 3 of the upstream belt conveyor 1. Accordingly, the speed of the upstream belt 3 of the upstream belt conveyor 1 can be automatically controlled so as to suppress meandering of the downstream belt 4 of the downstream belt conveyor 2.
In addition, the change of the speed of the upstream belt 3 of the upstream belt conveyor 1 is performed at a predetermined rate of change in speed, so that the drop position of the load on the downstream belt conveyor 2 is hardly disturbed.

1は上流ベルトコンベヤ
2は下流ベルトコンベヤ
3は上流ベルト
4は下流ベルト
5は蛇行センサ
6は制御装置
7は駆動電動モータ
10は最上流ベルトコンベヤ
1 is an upstream belt conveyor 2 is a downstream belt conveyor 3 is an upstream belt 4 is a downstream belt 5 is a meander sensor 6 is a control device 7 is a drive electric motor 10 is a most upstream belt conveyor

Claims (3)

上流のベルトコンベヤと下流のベルトコンベヤとを交差させて前記上流のベルトコンベヤの端部から下流のベルトコンベヤに積荷を落下して移載する場合に下流のベルトコンベヤのベルトの蛇行を防止するベルトコンベヤ蛇行防止装置であって、下流のベルトコンベヤのベルトの蛇行量を検出する蛇行量検出手段と、前記蛇行量検出手段で検出された下流のベルトコンベヤのベルトの蛇行量に基づいて上流のベルトコンベヤのベルトの速度を制御する上流ベルト速度制御手段とを備えたことを特徴とするベルトコンベヤ蛇行防止装置。   A belt for preventing meandering of the belt of the downstream belt conveyor when the upstream belt conveyor and the downstream belt conveyor are crossed to drop and transfer a load from the end of the upstream belt conveyor to the downstream belt conveyor. Conveyor meandering prevention device comprising meandering amount detecting means for detecting the meandering amount of the belt of the downstream belt conveyor, and an upstream belt based on the meandering amount of the belt of the downstream belt conveyor detected by the meandering amount detecting means. An apparatus for preventing meandering of a belt conveyor, comprising upstream belt speed control means for controlling the speed of the belt of the conveyor. 前記下流のベルトコンベヤのベルトが上流のベルトコンベヤの積荷搬送方向先方側に蛇行している場合に上流のベルトコンベヤのベルトの速度を大きくし、前記下流のベルトコンベヤのベルトが上流のベルトコンベヤの積荷搬送方向手前側に蛇行している場合に上流のベルトコンベヤのベルトの速度を小さくすることを特徴とする請求項1に記載のベルトコンベヤ蛇行防止装置。   When the belt of the downstream belt conveyor meanders in the load conveying direction of the upstream belt conveyor, the belt speed of the upstream belt conveyor is increased, and the belt of the downstream belt conveyor The belt conveyor meander prevention device according to claim 1, wherein the belt speed of the upstream belt conveyor is reduced when meandering toward the front side of the load carrying direction. 前記上流のベルトコンベヤのベルトの速度の変更は予め設定された所定の速度変化率で行うことを特徴とする請求項1又は2に記載のベルトコンベヤ蛇行防止装置。   The belt conveyor meander prevention device according to claim 1 or 2, wherein the belt speed of the upstream belt conveyor is changed at a predetermined speed change rate.
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