JP6811959B2 - Telescopic belt conveyor - Google Patents

Telescopic belt conveyor Download PDF

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JP6811959B2
JP6811959B2 JP2016222410A JP2016222410A JP6811959B2 JP 6811959 B2 JP6811959 B2 JP 6811959B2 JP 2016222410 A JP2016222410 A JP 2016222410A JP 2016222410 A JP2016222410 A JP 2016222410A JP 6811959 B2 JP6811959 B2 JP 6811959B2
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belt conveyor
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conveyor belt
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昭郎 上田
昭郎 上田
建治 池松
建治 池松
勝博 吉川
勝博 吉川
達 福永
達 福永
大輔 佐伯
大輔 佐伯
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Kajima Corp
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Description

この発明は、トンネル工事において切羽側で生じたズリを坑口側へ搬送する際、搬送経路に挿入する小規模の伸縮式ベルトコンベヤに関するものである。 The present invention relates to a small-scale telescopic belt conveyor that is inserted into a transport path when transporting a slip generated on the face side in tunnel construction to the wellhead side.

近年、長大トンネルの工事が増加しており、その工事において、掘削の最先端である切羽側で生じたズリと呼ばれる掘削土の搬出には、従来、大型のダンプトラックが使用されてきた。ところが、この場合、ダンプトラックの排気ガスによる坑内環境の悪化や作業者とダンプトラックとの接触事故の懸念等、安全衛生上の問題がある。 In recent years, the construction of long tunnels has been increasing, and in the construction, large dump trucks have been conventionally used to carry out excavated soil called shavings generated on the face side, which is the most advanced excavation. However, in this case, there are safety and health problems such as deterioration of the underground environment due to the exhaust gas of the dump truck and concern about a contact accident between the worker and the dump truck.

その対策として、掘削の進捗に伴い搬送距離を延長できる延伸ベルトコンベヤを使用してズリを坑口側へ搬送する工法が一般化しつつあるが、ズリの長距離の搬送に使用される延伸ベルトコンベヤは、延長に際し、コンベヤベルトの継ぎ足しや支持部材の組み立て等を行わなければならず、その作業に相当の手間がかかる。 As a countermeasure, a method of transporting slips to the wellhead side using a stretch belt conveyor that can extend the transport distance as excavation progresses is becoming common, but stretch belt conveyors used for long-distance transport of slips are becoming more common. In the extension, it is necessary to add the conveyor belt and assemble the support member, which requires a considerable amount of time and effort.

このため、図６に示すように、切羽での発破により生じた土石を細かく破砕する移動式のクラッシャ５１と延伸ベルトコンベヤ５０の始端部との間に小規模の伸縮式ベルトコンベヤＣ２を配置して、作業の合理化を図る工法が提案されている。 Therefore, as shown in FIG. 6, the arrangement of small telescopic belt conveyor C 2 between the starting end of the crusher 51 and the stretching belt conveyor 50 of the mobile to finely crush the debris generated by blasting in Face Then, a construction method for rationalizing the work has been proposed.

この伸縮式ベルトコンベヤＣ２は、ベルトコンベヤ親機６１の上をベルトコンベヤ子機６２が走行して伸縮するものであり、掘削の進捗に伴い、図６（ａ）に示す短縮状態から図６（ｂ）に示す伸長状態として、その始端を切羽側に接近させ、延伸ベルトコンベヤの延長作業の頻度を抑制しようとするものである。このような伸縮式ベルトコンベヤは、例えば、特許文献１に記載されている。 In this telescopic belt conveyor C 2 , the belt conveyor slave unit 62 travels on the belt conveyor master unit 61 to expand and contract, and as the excavation progresses, the shortened state shown in FIG. 6A changes to FIG. In the extended state shown in (b), the starting end thereof is brought closer to the face side to suppress the frequency of extension work of the stretching belt conveyor. Such a telescopic belt conveyor is described in Patent Document 1, for example.

特開２０１０−２４２３８２号公報JP-A-2010-242382

しかしながら、図６に示すような伸縮式ベルトコンベヤは、ベルトコンベヤ親機６１とベルトコンベヤ子機６２の重畳移動機構や乗降機構等、複雑な機構を要するほか、多段化が困難で伸縮比をあまり大きくできず、延伸ベルトコンベヤの延長作業の頻度を抑制する効果が十分に得られないという問題がある。 However, the telescopic belt conveyor as shown in FIG. 6 requires complicated mechanisms such as a superimposing movement mechanism and a boarding / alighting mechanism of the belt conveyor master unit 61 and the belt conveyor slave unit 62, and it is difficult to increase the number of stages and the expansion / contraction ratio is too large. There is a problem that the size cannot be increased and the effect of suppressing the frequency of extension work of the stretching belt conveyor cannot be sufficiently obtained.

そこで、この発明は、簡単な構造で大きく伸縮させることができ、掘削作業の効率向上を図ることができる伸縮式ベルトコンベヤを提供することを課題とする。 Therefore, an object of the present invention is to provide a telescopic belt conveyor that can be greatly expanded and contracted with a simple structure and can improve the efficiency of excavation work.

上記課題を解決するため、この発明に係る伸縮式ベルトコンベヤは、連続したパンタグラフ機構（いわゆるマジックハンド機構）により伸縮する側部フレーム体が長さ方向に延びるように両側に対向して配置された伸縮フレームと、長さ方向の両端部に渡された無端状のコンベヤベルトとを備え、
前記側部フレーム体は、交差したリンクが中間部で回転軸により連結されると共に、長さ方向に隣り合うリンクの端部同士が回転軸により連結されて、リンクの絞り又は開き動作により伸縮するものとされ、
前記リンクの端部同士を連結する各対の回転軸のうち、一方の回転軸は、地表面（敷板の上面等を含む）に接地する車輪を下部に備えた脚柱又は脚柱間に位置して接地しないガイド部材の所定位置に支持され、他方の回転軸は、脚柱又はガイド部材に形成されたスライド溝に摺動自在に嵌め入れられ、
前記脚柱及びガイド部材の上部にキャリアベッドが取り付けられて、キャリアベッドのキャリアローラによりコンベヤベルトの送り側が支持され、コンベヤベルトの送り側の長さを多段に配置された複数対のローラの接離に伴い調整するストレージ部を備え、
前記リンクを連結する回転軸にリターンローラが設けられ、コンベヤベルトの戻り側がリターンローラに蛇行するように巻き付けられて支持され、前記側部フレーム体のリンクの絞り又は開き動作に追従することにより、コンベヤベルトの搬送距離が延長され又は短縮されるものとしたのである。 In order to solve the above problems, the telescopic belt conveyor according to the present invention is arranged to face each other on both sides so that the side frame bodies that expand and contract by a continuous pantograph mechanism (so-called magic hand mechanism) extend in the length direction. It has a telescopic frame and endless conveyor belts that are passed to both ends in the length direction.
In the side frame body, the intersecting links are connected by a rotation axis at the intermediate portion, and the ends of the adjacent links in the length direction are connected by the rotation axis, and the side frame body expands and contracts by the closing or opening operation of the links. Being supposed to
Of each pair of rotating shafts connecting the ends of the links, one of the rotating shafts is located between pedestals or pedestals having wheels that touch the ground surface (including the upper surface of the floor plate) at the bottom. The other rotating shaft is slidably fitted into the pedestal or the slide groove formed in the guide member, and is supported in a predetermined position of the guide member that does not touch the ground.
A carrier bed is attached to the upper part of the pedestal and the guide member, the feed side of the conveyor belt is supported by the carrier roller of the carrier bed, and the lengths of the feed side of the conveyor belt are contacted by a plurality of pairs of rollers arranged in multiple stages. Equipped with a storage unit that adjusts as it separates
A return roller is provided on the rotating shaft connecting the links, and the return side of the conveyor belt is wound around the return roller in a meandering manner to be supported, and by following the narrowing or opening operation of the link of the side frame body. The transport distance of the conveyor belt was to be extended or shortened.

この発明に係る伸縮式ベルトコンベヤでは、コンベヤベルトを支持する伸縮フレームを連続したパンタグラフ機構により伸縮する側部フレーム体から構成し、側部フレーム体の車輪の地表面上での転動に伴い搬送距離を変化させるので、容易に設置することができ、簡単な構造で大きく伸縮させることができる。 In the telescopic belt conveyor according to the present invention, the telescopic frame that supports the conveyor belt is composed of a side frame body that expands and contracts by a continuous pantograph mechanism, and is conveyed as the wheels of the side frame body roll on the ground surface. Since the distance is changed, it can be easily installed and can be greatly expanded and contracted with a simple structure.

従って、トンネル工事における作業負荷が軽減され、切羽側から坑口へズリを搬送する延伸ベルトコンベヤの延長頻度を抑制して、掘削作業の効率を向上させることができ、工期の短縮を図ることができる。 Therefore, the work load in the tunnel construction can be reduced, the extension frequency of the extension belt conveyor that conveys the slip from the face side to the wellhead can be suppressed, the efficiency of the excavation work can be improved, and the construction period can be shortened. ..

この発明の実施形態に係る伸縮式ベルトコンベヤの（ａ）伸長状態を示す側面図、（ｂ）短縮状態を示す側面図A side view showing (a) an extended state and (b) a side view showing a shortened state of the telescopic belt conveyor according to the embodiment of the present invention. 同上の（ａ）図１のＡ−Ａ断面概略図、（ｂ）図１のＢ−Ｂ断面概略図Same as above (a) schematic cross-sectional view taken along the line AA of FIG. 1 and (b) schematic cross-sectional view taken along the line BB of FIG. 同上の（ａ）図１のＣ−Ｃ断面概略図、（ｂ）図１のＤ−Ｄ断面概略図Same as above (a) schematic cross-sectional view taken along the line CC of FIG. 1 and (b) schematic cross-sectional view taken along the line DD of FIG. 同上の（ａ）図１のＥ部側面概略図、（ｂ）図１のＦ部側面概略図、Same as above (a) schematic side view of part E in FIG. 1, (b) schematic side view of part F in FIG. 同上の伸縮式ベルトコンベヤを使用した工法における（ａ）伸縮式ベルトコンベヤの短縮状態を示す概略側面図、（ｂ）発破時の概略側面図、（ｃ）伸縮式ベルトコンベヤを伸長したズリ搬送時の状態を示す概略側面図In the construction method using the same telescopic belt conveyor, (a) a schematic side view showing a shortened state of the telescopic belt conveyor, (b) a schematic side view at the time of blasting, and (c) at the time of shifting the telescopic belt conveyor in an extended manner Schematic side view showing the state of 特許文献１に記載の伸縮式ベルトコンベヤを使用した工法における（ａ）伸縮式ベルトコンベヤの短縮状態を示す概略側面図、（ｂ）伸縮式ベルトコンベヤの伸長状態を示す概略斜視図In the construction method using the telescopic belt conveyor described in Patent Document 1, (a) a schematic side view showing a shortened state of the telescopic belt conveyor, and (b) a schematic perspective view showing an extended state of the telescopic belt conveyor.

以下、この発明の実施形態を図１乃至図５に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5.

この伸縮式ベルトコンベヤＣ１では、搬送方向の前半部と後半部に分割された伸縮フレーム１により無端状のコンベヤベルト２が支持され、それぞれの伸縮フレーム１は、連続したパンタグラフ機構により伸縮する側部フレーム体１１が長さ方向に延びるように両側に対向して配置された構成とされている。 In the telescopic belt conveyor C 1, endless conveyor belt 2 is supported by a telescopic frame 1 which is divided in the second half portion and the first half of the conveyance direction, each of the telescopic frame 1 expands and contracts the continuous pantograph mechanism side The portion frame body 11 is arranged to face each other on both sides so as to extend in the length direction.

前半部の伸縮フレーム１の始端側にはテール台車３が、後半部の伸縮フレーム１の終端側にはヘッド台車４がそれぞれ移動自在に配置され、前半部と後半部の伸縮フレーム１の間には中間台車５が移動自在に配置されている。 A tail trolley 3 is movably arranged on the start end side of the telescopic frame 1 in the first half, and a head trolley 4 is movably arranged on the end side of the telescopic frame 1 in the second half. The intermediate carriage 5 is arranged so as to be movable.

コンベヤベルト２は、テール台車３に設けられたテールプーリ２１とヘッド台車４に設けられたヘッドプーリ２２に掛け回され、ヘッドプーリ２２を回転させる駆動用モーター２３の駆動により回転走行し、送り側が搬送方向へ進行するようになっている。 The conveyor belt 2 is hung on a tail pulley 21 provided on the tail carriage 3 and a head pulley 22 provided on the head carriage 4, and rotates and travels by being driven by a drive motor 23 that rotates the head pulley 22, and the feed side is conveyed. It is designed to move in the direction.

伸縮フレーム１の側部フレーム体１１は、交差したリンク１２が中間部で回転軸１３により連結されると共に、長さ方向に隣り合うリンク１２の端部同士が回転軸１４により連結されて、垂直方向でのリンクの絞り又は開き動作により伸縮する構成とされている。 In the side frame body 11 of the telescopic frame 1, the intersecting links 12 are connected by the rotation shaft 13 at the intermediate portion, and the ends of the links 12 adjacent to each other in the length direction are connected by the rotation shaft 14 to be vertical. It is configured to expand and contract by narrowing or opening the link in the direction.

そして、側部フレーム体１１は、坑内の地表面３０に接地する車輪１５ａを下部に備えた脚柱１５により、地表面３０から一定の高さに支持されている。 The side frame body 11 is supported at a constant height from the ground surface 30 by a pedestal 15 provided with wheels 15a in contact with the ground surface 30 in the mine.

側部フレーム体１１において、リンク１２の端部同士を連結する各対の回転軸１４のうち、上方の回転軸１４は、脚柱１５又は脚柱１５間に位置して接地しないガイド部材１６の所定高さに支持され、下方の回転軸１４は、脚柱１５又はガイド部材１６に形成された上下方向のスライド溝１７に摺動自在に嵌め入れられている。 In the side frame body 11, of the pair of rotating shafts 14 that connect the ends of the links 12 to each other, the upper rotating shaft 14 is a guide member 16 that is located between the pedestals 15 or the pedestals 15 and does not touch the ground. Supported at a predetermined height, the lower rotating shaft 14 is slidably fitted into the vertical slide groove 17 formed in the pedestal 15 or the guide member 16.

脚柱１５及びガイド部材１６の上端部と、テール台車３、ヘッド台車４及び中間台車５の上部には、キャリアベッド２４が取り付けられ、キャリアベッド２４のキャリアローラによりコンベヤベルト２の送り側が支持されている。 A carrier bed 24 is attached to the upper ends of the pedestal 15 and the guide member 16 and the upper parts of the tail carriage 3, the head carriage 4, and the intermediate carriage 5, and the feed side of the conveyor belt 2 is supported by the carrier rollers of the carrier bed 24. ing.

また、テール台車３には、ストレージ部２５が設けられている。ストレージ部２５は、多段に配置された複数対のローラにコンベヤベルト２が掛け回され、伸縮フレーム１の伸長又は短縮に連動した対向するローラの接近又は離間に伴い、コンベヤベルト２の送り側の長さを調整し、或いはコンベヤベルト２の使用に伴う伸びを吸収するものである。 Further, the tail carriage 3 is provided with a storage unit 25. In the storage unit 25, the conveyor belt 2 is hung around a plurality of pairs of rollers arranged in multiple stages, and as the opposing rollers approach or separate in conjunction with the extension or shortening of the telescopic frame 1, the conveyor belt 2 is on the feed side. It adjusts the length or absorbs the elongation associated with the use of the conveyor belt 2.

リンク１２を連結する回転軸１３，１４にはリターンローラ２６が設けられ、コンベヤベルト２の戻り側がリターンローラ２６に蛇行するように巻き付けられて支持され、リンク１２の絞り又は開き動作に追従することにより、コンベヤベルト２の搬送距離が延長され、又は短縮されるようになっている。 Return rollers 26 are provided on the rotating shafts 13 and 14 connecting the links 12, and the return side of the conveyor belt 2 is wound around the return rollers 26 in a meandering manner to be supported, and follows the narrowing or opening operation of the links 12. As a result, the transport distance of the conveyor belt 2 is extended or shortened.

具体的には、図４（ａ）に示すように、リンク１２が絞られて側部フレーム体１１が伸長された状態では、リンク１２の端部同士を連結する上下の回転軸１４の間隔が狭くなるので、コンベヤベルト２の戻り側が短くなると共に、送り側が長くなって、コンベヤベルト２の搬送距離が延長される。 Specifically, as shown in FIG. 4A, when the link 12 is narrowed down and the side frame body 11 is extended, the distance between the upper and lower rotating shafts 14 connecting the ends of the link 12 is large. Since it becomes narrower, the return side of the conveyor belt 2 becomes shorter and the feed side becomes longer, so that the transport distance of the conveyor belt 2 is extended.

一方、図４（ｂ）に示すように、リンク１２が開かれて側部フレーム体１１が短縮された状態では、リンク１２の端部同士を連結する上下の回転軸１４の間隔が広がるので、コンベヤベルト２の戻り側が長くなると共に、送り側が短くなって、コンベヤベルト２の搬送距離が短縮される。 On the other hand, as shown in FIG. 4B, when the link 12 is opened and the side frame body 11 is shortened, the distance between the upper and lower rotating shafts 14 connecting the ends of the link 12 is widened. As the return side of the conveyor belt 2 becomes longer, the feed side becomes shorter, and the transport distance of the conveyor belt 2 is shortened.

上記伸縮式ベルトコンベヤＣ１は、トンネルの施工に際し、図５に示すように、従来の伸縮式ベルトコンベヤと同様、坑口へ至る延伸ベルトコンベヤ５０の始端部と切羽側の移動式のクラッシャ５１の間に配置する。このとき、テール台車３をクラッシャ５１側に向け、ヘッド台車４を延伸ベルトコンベヤ５０の始端部に接近させる。 As shown in FIG. 5, the telescopic belt conveyor C 1 is a movable crusher 51 of the extension belt conveyor 50 leading to the wellhead and the face side, similar to the conventional telescopic belt conveyor, when constructing a tunnel. Place in between. At this time, the tail carriage 3 is directed toward the crusher 51, and the head carriage 4 is brought closer to the starting end of the extension belt conveyor 50.

そして、発破に先立って、図５（ａ）に示すように、伸縮フレーム１を短縮して、伸縮式ベルトコンベヤＣ１の始端部を切羽から離れるように退避させ、ドリルジャンボ５２等により切羽面に穿孔する。 Then, prior to blasting, as shown in FIG. 5 (a), by reducing the stretch frame 1, the leading end of the telescopic belt conveyor C 1 is retracted away from the working face, the working face surface by a drill jumbo 52 etc. To blast.

このとき、伸縮フレーム１の短縮は、前半部の伸縮フレーム１の始端側をクラッシャ５１等の移動機械で坑口側である後方へ押すことにより行う。前半部の伸縮フレーム１が押されて最短長さまで短縮されると、中間台車５を介して後半部の伸縮フレーム１が押されて短縮される。 At this time, the expansion / contraction frame 1 is shortened by pushing the start end side of the expansion / contraction frame 1 in the front half portion to the rear side of the wellhead side with a moving machine such as a crusher 51. When the telescopic frame 1 in the first half is pushed and shortened to the shortest length, the telescopic frame 1 in the latter half is pushed and shortened via the intermediate bogie 5.

このような状態で、図５（ｂ）に示すように、発破を実施すると、伸縮式ベルトコンベヤＣ１やクラッシャ５１等に発破に伴う飛石等が当たることがなく、安全に切羽面の堅い岩盤を崩壊させることができる。 In this state, as shown in FIG. 5 (b), when carrying out the blasting, telescopic belt conveyor C 1 and the crusher 51 or the like without flying stones or the like due to blasting hits the safely rigid with the working face surface rock Can be blasted.

その後、切羽側のズリを搬出する際には、伸縮フレーム１を搬出の進捗に伴い徐々に伸長させる。伸縮フレーム１の伸長は、図５（ｃ）に示すように、テール台車３をワイヤロープ等を介し伸縮式ベルトコンベヤＣ１より切羽側に配置されたクラッシャ５１等の移動機械で引っ張ることにより行う。 After that, when carrying out the slip on the face side, the telescopic frame 1 is gradually extended as the carrying out progresses. Extension of the telescopic frame 1, as shown in FIG. 5 (c), carried out by pulling the tail carriage 3 in the moving machine crusher 51 or the like which is disposed on the working face side of the telescopic belt conveyor C 1 via the wire rope ..

このように伸縮式ベルトコンベヤＣ１を伸長させ、油圧ショベル５３等を使用して、発破により生じた土石をクラッシャ５１に投入し、クラッシャ５１で破砕したズリを伸縮式ベルトコンベヤＣ１の始端側でコンベヤベルト２に供給に投入し、伸縮式ベルトコンベヤＣ１によりその終端側へ搬送して、延伸ベルトコンベヤ５０に移載し、延伸ベルトコンベヤ５０により坑口側へ搬送する。 Thus telescopic belt conveyor C 1 to extension, using the hydraulic excavator 53 etc., the debris caused by the blast was charged to the crusher 51, the starting end of the shear crushing telescopic belt conveyor C 1 in the crusher 51 in and supplied to the supplying to the conveyor belt 2 conveys to the terminal end side by the telescopic belt conveyor C 1, then transferred to stretch the belt conveyor 50, conveyed to the wellhead side by stretching the belt conveyor 50.

そして、ズリの搬出が進捗し、伸縮式ベルトコンベヤＣ１が最長寸法に達するまで伸長した後、さらに掘削を進めるには、伸縮式ベルトコンベヤＣ１を再度短縮して、延伸ベルトコンベヤ５０をコンベヤベルトの継ぎ足しや支持部材の組み立てにより延長し、上述の作業を繰り返す。 Then, out of the shear is progress, after the telescopic belt conveyor C 1 is extended to reach the longest dimension, and more advanced drilling, by shortening the telescopic belt conveyor C 1 again, the conveyor stretch belt conveyor 50 Extend by adding belts and assembling support members, and repeat the above work.

上記のような伸縮式ベルトコンベヤでは、コンベヤベルト２を支持する伸縮フレーム１を連続したパンタグラフ機構により伸縮する側部フレーム体１１から構成し、側部フレーム体１１の車輪１５ａの地表面上での転動に伴い搬送距離を変化させるので、容易に設置することができ、簡単な構造で大きく伸縮させることができる。 In the telescopic belt conveyor as described above, the telescopic frame 1 that supports the conveyor belt 2 is composed of a side frame body 11 that expands and contracts by a continuous pantograph mechanism, and the wheels 15a of the side frame body 11 are on the ground surface. Since the transport distance changes as it rolls, it can be easily installed and can be greatly expanded and contracted with a simple structure.

従って、トンネル工事における作業負荷が軽減され、切羽側から坑口へズリを搬送する延伸ベルトコンベヤの延長頻度を抑制して、掘削作業の効率を向上させることができ、工期の短縮を図ることができる。 Therefore, the work load in the tunnel construction can be reduced, the extension frequency of the extension belt conveyor that conveys the slip from the face side to the wellhead can be suppressed, the efficiency of the excavation work can be improved, and the construction period can be shortened. ..

Ｃ１ 伸縮式ベルトコンベヤ
１ 伸縮フレーム
２ コンベヤベルト
３ テール台車
４ ヘッド台車
５ 中間台車
１１ 側部フレーム体
１２ リンク
１３，１４ 回転軸
１５ 脚柱
１５ａ 車輪
１６ ガイド部材
１７ スライド溝
２０ ホッパ
２１ テールプーリ
２２ ヘッドプーリ
２３ 駆動用モーター
２４ キャリアベッド
２５ ストレージ部
２６ リターンローラ
３０ 地表面
５０ 延伸ベルトコンベヤ
５１ クラッシャ
５２ ドリルジャンボ
５３ 油圧ショベル C 1 Telescopic belt conveyor 1 Telescopic frame 2 Conveyor belt 3 Tail trolley 4 Head trolley 5 Intermediate trolley 11 Side frame body 12 Link 13, 14 Rotating shaft 15 Leg pillar 15a Wheel 16 Guide member 17 Slide groove 20 Hopper 21 Tail pulley 22 Head Pulley 23 Drive motor 24 Carrier bed 25 Storage section 26 Return roller 30 Ground surface 50 Stretching belt conveyor 51 Crusher 52 Drill jumbo 53 Hydraulic excavator

Claims (1)

連続したパンタグラフ機構により伸縮する側部フレーム体(11)が長さ方向に延びるように両側に対向して配置された伸縮フレーム(1)と、長さ方向の両端部に渡された無端状のコンベヤベルト(2)とを備え、
前記側部フレーム体(11)は、交差したリンク(12)が中間部で回転軸(13)により連結されると共に、長さ方向に隣り合うリンク(12)の端部同士が回転軸(14)により連結されて、リンク(12)の絞り又は開き動作により伸縮するものとされ、
前記リンク(12)の端部同士を連結する各対の回転軸(14,14)のうち、一方の回転軸(14)は、地表面に接地する車輪(15a)を下部に備えた脚柱(15)又は脚柱(15)間に位置して接地しないガイド部材(16)の所定位置に支持され、他方の回転軸(14)は、脚柱(15)又はガイド部材(16)に形成されたスライド溝(17)に摺動自在に嵌め入れられ、
前記脚柱(15)及びガイド部材(16)の上部にキャリアベッド(24)が取り付けられて、キャリアベッド(24)のキャリアローラによりコンベヤベルト(2)の送り側が支持され、コンベヤベルト(2)の送り側の長さを多段に配置された複数対のローラの接離に伴い調整するストレージ部(25)を備え、
前記リンク(12)を連結する回転軸(13,14)にリターンローラ(26)が設けられ、コンベヤベルト(2)の戻り側がリターンローラ(26)に蛇行するように巻き付けられて支持され、前記側部フレーム体(11)のリンク(12)の絞り又は開き動作に追従することにより、コンベヤベルト(2)の搬送距離が延長され又は短縮される伸縮式ベルトコンベヤ。 A telescopic frame (1) arranged to face each other on both sides so that a side frame body (11) that expands and contracts by a continuous pantograph mechanism extends in the length direction, and an endless shape that is passed to both ends in the length direction. Equipped with a conveyor belt (2)
In the side frame body (11), the intersecting links (12) are connected by a rotation axis (13) at the intermediate portion, and the ends of the links (12) adjacent to each other in the length direction are connected to each other by the rotation axis (14). ), And it is supposed to expand and contract by the squeezing or opening operation of the link (12).
Of each pair of rotating shafts (14, 14) connecting the ends of the link (12), one of the rotating shafts (14) is a pedestal having a wheel (15a) that touches the ground surface at the bottom. It is supported at a predetermined position of the guide member (16) which is located between (15) or the pedestal (15) and does not touch the ground, and the other rotating shaft (14) is formed on the pedestal (15) or the guide member (16). It is slidably fitted into the slide groove (17)
A carrier bed (24) is attached to the upper part of the pedestal (15) and the guide member (16), the feed side of the conveyor belt (2) is supported by the carrier roller of the carrier bed (24), and the conveyor belt (2) Equipped with a storage unit (25) that adjusts the length of the feed side according to the contact and separation of multiple pairs of rollers arranged in multiple stages.
A return roller (26) is provided on the rotating shafts (13, 14) connecting the link (12), and the return side of the conveyor belt (2) is wound around the return roller (26) so as to meander and is supported. A telescopic belt conveyor that extends or shortens the transport distance of the conveyor belt (2) by following the narrowing or opening operation of the link (12) of the side frame body (11).
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US5366068A (en) * 1992-11-13 1994-11-22 Australian Longwall Pty. Limited Conveyor belt/cutting head advance mechanism
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