JP2007326661A - Industrial vehicle - Google Patents

Industrial vehicle Download PDF

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JP2007326661A
JP2007326661A JP2006157936A JP2006157936A JP2007326661A JP 2007326661 A JP2007326661 A JP 2007326661A JP 2006157936 A JP2006157936 A JP 2006157936A JP 2006157936 A JP2006157936 A JP 2006157936A JP 2007326661 A JP2007326661 A JP 2007326661A
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beam body
belt
center
industrial vehicle
height
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JP5084181B2 (en
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晴夫 ▲濱▼田
Haruo Hamada
Motoyuki Suzuki
基之 鈴木
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TCM Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an industrial vehicle capable of suppressing increase of bending moment acting on a beam body even when conveyance distance of a belt conveyor becomes long. <P>SOLUTION: This industrial vehicle constituted by arranging the belt conveyor 3 on the long beam body 2 whose intermediate part is supported in two front and rear sections on a vehicle main body 1, is constituted in such a way that the height of the center between a feeding side belt 25a and a return side belt 25b of the belt conveyor 3 in a front cantilever part 2a from a connection supporting part K1 to a front end of the beam body 2 is positioned at the upper part of the height of the center of the beam body 2 in the front cantilever part 2a. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、ベルトコンベヤを搭載した産業用車両に関するものである。   The present invention relates to an industrial vehicle equipped with a belt conveyor.

例えば、岸壁において、穀物などの粒状物を貨物船に積み込む場合に、ベルトコンベヤが搭載された自走式の産業用車両が用いられている。
従来、この種の産業用車両は、走行自在な車両本体と、この車両本体上に中間部分が前後２箇所で支持されて鉛直面内で傾動自在に設けられた長尺のビーム体と、このビーム体に配置されたベルトコンベヤとから構成されている。 For example, a self-propelled industrial vehicle on which a belt conveyor is mounted is used when a granular material such as grain is loaded on a cargo ship at a quay.
Conventionally, this type of industrial vehicle includes a vehicle body that can run freely, a long beam body that is supported on the vehicle body at two front and rear positions, and is tiltable in a vertical plane. It is comprised from the belt conveyor arrange | positioned at the beam body.

また、上記ベルトコンベヤは、ビーム体の前端に設けられた前端側プーリと後端に設けられた後端側プーリとに無端状に巻回された搬送用ベルトと、ビーム体の中間部分の適所に配置された駆動用ローラを介して駆動する電動機とから構成されている（例えば、特許文献１参照）。
特開２００２−４３３４号公報 In addition, the belt conveyor includes a conveyor belt wound endlessly around a front end pulley provided at the front end of the beam body and a rear end pulley provided at the rear end, and an appropriate portion of the intermediate portion of the beam body. (See, for example, Patent Document 1).
JP 2002-4334 A

ところで、通常、図７に示すように、搬送用ベルト５１を支持するビーム体５２については、例えば複数本の長尺の角柱材５３が用いられてトラス構造にされるとともに、その搬送距離が長い場合には、当然、ビーム体５２も長くなり、その自重および被搬送物の重量も大きくなるとともに搬送用ベルト５１の駆動力も大きくなって、ビーム体に作用する曲げモーメントも大きくなる。したがって、ビーム体５２の中間部分の背が高くされるとともに、前端側および後端側に行くに従って背の高さが低くなるように考慮されていた。   By the way, as shown in FIG. 7, the beam body 52 that supports the conveyor belt 51 is usually formed into a truss structure using a plurality of elongated prisms 53, and the conveyance distance is long. In this case, of course, the beam body 52 becomes longer, its own weight and the weight of the object to be conveyed increase, the driving force of the conveyor belt 51 also increases, and the bending moment acting on the beam body also increases. Therefore, it has been considered that the height of the intermediate portion of the beam body 52 is increased and the height of the beam body 52 is decreased as it goes to the front end side and the rear end side.

さらに、車両の走行性能を考慮して、ビーム体５２については、前方部分５２ａ、中間部分５２ｂおよび後方部分５２ｃに３分割されて折り畳み構造にされるとともに、折り畳んだ際に、背の高さができるだけ低くなるように、例えばビーム体５２を伸ばした際に、前方部分５２ａおよび後方部分５２ｃの上面、すなわち上弦部材６１が前端および後端に行くに従って下弦部材６２に近づくように傾斜されていた。   Further, in consideration of the running performance of the vehicle, the beam body 52 is divided into a front part 52a, an intermediate part 52b, and a rear part 52c to form a folded structure. For example, when the beam body 52 is extended, the upper surface of the front portion 52a and the rear portion 52c, that is, the upper chord member 61 is inclined so as to approach the lower chord member 62 toward the front end and the rear end so as to be as low as possible.

このため、搬送用ベルト５１は、その高さ中心がビーム体５２の高さ中心よりも下方位置となるように、配置されていた。
したがって、搬送距離が長くなった場合には、搬送用ベルトに作用する張力も大きくなり、被搬送物の重量の増加と相俟って、下向きに非常に大きい曲げモーメントが作用するという問題がある。なお、曲げモーメントが大きくなると、ビーム体の先端の撓みが許容範囲を超えてしまい、またこのような事態に対処しようとすると、重量の増加が避けられなくなる。 For this reason, the conveyor belt 51 is arranged so that the height center thereof is positioned below the center of the beam body 52.
Therefore, when the transport distance is increased, the tension acting on the transport belt is also increased, and there is a problem that a very large bending moment is applied downward in combination with an increase in the weight of the transported object. . When the bending moment is increased, the deflection of the tip of the beam body exceeds the allowable range, and an increase in weight is unavoidable when trying to cope with such a situation.

そこで、上記課題を解決するため、本発明は、搬送距離が長くなった場合でも、ビーム体に作用する曲げモーメントの増加を抑制し得る産業用車両を提供することを目的とする。   Therefore, in order to solve the above-described problems, an object of the present invention is to provide an industrial vehicle that can suppress an increase in bending moment acting on a beam body even when a conveyance distance becomes long.

上記課題を解決するため、本発明の産業用車両は、車両本体に中間部分が前後２箇所で支持された長尺のビーム体にベルトコンベヤが直線状に配置されてなる産業用車両であって、
上記ビーム体の各支持位置から先端までの前方または後方の片持部分のうち、長い方の片持部分におけるベルトコンベヤの上下の送り側ベルトと戻り側ベルトとの間の高さ中心が、当該長い方の片持部分におけるビーム体の高さ中心よりも上側に位置するように構成したものである。 In order to solve the above problems, an industrial vehicle of the present invention is an industrial vehicle in which a belt conveyor is linearly arranged on a long beam body in which an intermediate portion is supported at two front and rear positions on a vehicle body. ,
The center of height between the upper and lower feed belts and the return belt of the belt conveyor in the longer cantilever portion of the front and rear cantilever portions from each support position to the tip of the beam body, The longer cantilever part is configured to be positioned above the height center of the beam body.

上記産業用車両の構成によると、中間部分が２箇所で支持されたビーム体の長い方の片持部分におけるベルトコンベヤの上下の送り側ベルトと戻り側ベルトとの間の高さ中心が、当該長い方の片持部分におけるビーム体の高さ方向の中心よりも上側に位置するように構成したので、搬送用ベルトに張力が作用した場合、ビーム体には上方への曲げモーメントが作用するため、ビーム体の自重および被搬送物の重量による曲げモーメントから、上記張力による曲げモーメントの分だけが軽減される。すなわち、従来、搬送用ベルトに作用する張力による曲げモーメント分が増大されていたのに対して、本発明の構成では、張力による曲げモーメント分が軽減されることになり、したがって搬送距離が長くなった場合でも、曲げモーメントが増加するのを抑制することができる。   According to the configuration of the industrial vehicle, the center of the height between the upper and lower feed belts and the return belt of the belt conveyor in the longer cantilever part of the beam body supported by the middle part at two locations is Since the longer cantilever portion is positioned above the center of the beam body in the height direction, when tension is applied to the conveyor belt, an upward bending moment acts on the beam body. The bending moment due to the tension is reduced from the bending moment due to the weight of the beam body and the weight of the conveyed object. That is, while the bending moment due to the tension acting on the conveyor belt has been increased conventionally, in the configuration of the present invention, the bending moment due to the tension is reduced, and therefore the conveyance distance becomes longer. Even in this case, an increase in bending moment can be suppressed.

［実施の形態］
以下、本発明の実施の形態に係るベルトコンベヤを搭載した産業用車両を、図１〜図６に基づき説明する。 [Embodiment]
Hereinafter, an industrial vehicle equipped with a belt conveyor according to an embodiment of the present invention will be described with reference to FIGS.

この産業用車両は、粒状物などの被搬送物を例えば貨物船などに積み込むためのもので、図１に示すように、大きく分けて、走行用駆動装置を有する車両本体１と、この車両本体１に中間部分が前後２箇所で支持されて且つ鉛直面内で傾動自在に支持された長尺のビーム体２と、このビーム体２に配置されたベルトコンベヤ３とから構成されている。   This industrial vehicle is for loading a transported object such as a granular material on, for example, a cargo ship. As shown in FIG. 1, the industrial vehicle is roughly divided into a vehicle main body 1 having a traveling drive device, and the vehicle main body. 1 includes a long beam body 2 that is supported at two positions in the front and rear and supported in a tiltable manner in a vertical plane, and a belt conveyor 3 disposed on the beam body 2.

すなわち、このビーム体２の中間部分の後側は車両本体１の後部に設けられた支持ブラケット１１に水平支持軸１２を介して鉛直面内で揺動可能に支持されるとともに、中間部分の前側は車両本体１の前部に設けられた揺動装置、例えばシリンダ装置１３に連結・支持されている。このシリンダ装置１３により、ビーム体２を傾動させて、適切な作業姿勢および走行時などの非作業姿勢を選択することができる。   That is, the rear side of the intermediate portion of the beam body 2 is supported by the support bracket 11 provided at the rear portion of the vehicle body 1 so as to be swingable in the vertical plane via the horizontal support shaft 12, and the front side of the intermediate portion. Is connected to and supported by a swinging device provided at the front portion of the vehicle body 1, for example, a cylinder device 13. By this cylinder device 13, the beam body 2 can be tilted to select an appropriate working posture and a non-working posture such as when traveling.

そして、このビーム体２のシリンダ装置１３との連結支持部（前方支持位置）Ｋ１よりも前側の前方片持部分（前方突出部分ともいえる）２ａは、支持ブラケット１１による回転支持部（後方支持位置）Ｋ２よりも後側の後方片持部分（後方突出部分ともいえる）２ｂよりも長くされている。なお、前方向（前側）は被搬送物を搬送する方向であり、通常、前方片持部分の方が後方片持部分よりも長くされている。   A front cantilever portion (also referred to as a forward projecting portion) 2a on the front side of the connection support portion (front support position) K1 of the beam body 2 with the cylinder device 13 is a rotation support portion (rear support position) by the support bracket 11. ) It is longer than the rear cantilever part (also referred to as a rear protruding part) 2b on the rear side of K2. In addition, the front direction (front side) is a direction which conveys a to-be-conveyed object, and the front cantilever part is usually made longer than the back cantilever part.

また、上記ベルトコンベヤ３は、ビーム体２の前端（先端）に設けられた前端側プーリ２１と、ビーム体２の後端（先端）に設けられた後端側プーリ２２と、これら両プーリ２１，２２間に亘って無端状に巻回された搬送用ベルト２５と、この搬送用ベルト２５の途中部分が巻き付けられた駆動用プーリ２３と、この駆動用プーリ２３を回転させる電動機（図示せず）と、上記両プーリ２１，２２の中間部分の上下に配置されて送り側ベルト２５ａおよび戻り側ベルト２５ｂを下方から支持する多数の上側中間ローラ２４（２４Ａ）および下側中間ローラ２４（２４Ｂ）と、上記駆動用プーリ２３の近傍に配置されたベルト緊張装置２６とから構成されている。なお、ビーム体２の後端側には、被搬送物を投入するためのホッパー２７が設けられており、また搬送時において、ビーム体２の後端部は支持具２８により地上側に支持されるように構成されている。   The belt conveyor 3 includes a front end side pulley 21 provided at the front end (front end) of the beam body 2, a rear end side pulley 22 provided at the rear end (front end) of the beam body 2, and both the pulleys 21. , 22, a conveyor belt 25 wound endlessly, a driving pulley 23 around which a middle portion of the conveyor belt 25 is wound, and an electric motor (not shown) that rotates the driving pulley 23. ), And a plurality of upper intermediate rollers 24 (24A) and lower intermediate rollers 24 (24B) arranged above and below the intermediate portions of the pulleys 21 and 22 and supporting the feed side belt 25a and the return side belt 25b from below. And a belt tensioning device 26 disposed in the vicinity of the driving pulley 23. A hopper 27 is provided on the rear end side of the beam body 2 for loading an object to be conveyed, and the rear end portion of the beam body 2 is supported on the ground side by a support tool 28 during the transportation. It is comprised so that.

そして、上記ビーム体２の少なくとも前方片持部分２ａにおけるベルトコンベヤ３については、直線状（直線および略直線）に配置されており、また送り側ベルト２５ａと戻り側ベルト２５ｂとの高さ中心が、当該片持部分２ａにおけるビーム体２の高さ中心よりも上側に位置するように構成されている。    The belt conveyor 3 in at least the front cantilever portion 2a of the beam body 2 is arranged in a straight line (straight line and substantially straight line), and the center of the height of the feed side belt 25a and the return side belt 25b is the center. The cantilever portion 2a is configured to be positioned above the height center of the beam body 2.

以下、この構成について、図２〜図５に基づき詳しく説明する。
上記ビーム体２は、図２〜図４に示すように、トラス構造にされており、非常に長く且つ断面が矩形状にされた４本の弦部材（角柱パイプが用いられ、上側を上弦部材と称し、下側を下弦部材と称す）３１と、これら４本の弦部材３１により形成される４方の外面内に配置される連結材３２および斜材（ブレース材）３３とから構成されている。 Hereinafter, this configuration will be described in detail with reference to FIGS.
The beam body 2 has a truss structure as shown in FIGS. 2 to 4, and has four string members (rectangular pipes are used, and the upper string member is on the upper side, which is very long and has a rectangular cross section. And the lower side is referred to as a lower chord member) 31, and a connecting member 32 and a diagonal member (brace member) 33 disposed in four outer surfaces formed by these four chord members 31. Yes.

また、前後の支持部Ｋ１，Ｋ２間であるビーム体２の中間支持部分２ｃでの高さは略同一（つまり、上弦部材と下弦部材とは平行に設けられている）にされるとともに、前方片持部分２ａおよび後方片持部分２ｂについては、先端（前端側、後端側）に行くにしたがってそれぞれ背が低くなるようにされている。   Further, the height of the intermediate support portion 2c of the beam body 2 between the front and rear support portions K1 and K2 is substantially the same (that is, the upper chord member and the lower chord member are provided in parallel), and the front The cantilevered portion 2a and the rear cantilevered portion 2b are configured such that their heights become lower as they go to the front end (front end side, rear end side).

具体的に説明すれば、前方片持部分２ａの上面は中間支持部分２ｃの上面の延長となるようにされるとともに、後方片持部分２ｂの下面は中間支持部分２ｃの下面の延長となるようにされている。すなわち、前方片持部分２ａについては、前端に行くにしたがって、下面が上面に対して狭くなるように上方に傾斜して設けられるとともに、後方片持部分２ｂについては、後端に行くにしたがって、上面が下面に対して狭くなるように下方に傾斜して設けられている（非常に細長い平行四辺形状にされているともいえる）。なお、上記連結材３２および斜材３３についても、弦部材３１と同様に、例えば断面が矩形状の角柱パイプが用いられる。また、これら各角柱パイプの材料については、重量軽減のために、アルミニウムが用いられており、また繊維強化プラスチックを用いる場合もある。   More specifically, the upper surface of the front cantilever portion 2a is an extension of the upper surface of the intermediate support portion 2c, and the lower surface of the rear cantilever portion 2b is an extension of the lower surface of the intermediate support portion 2c. Has been. That is, the front cantilever portion 2a is provided so as to be inclined upward so that the lower surface becomes narrower with respect to the upper surface as it goes to the front end, and the rear cantilever portion 2b as it goes to the rear end. The upper surface is provided so as to be inclined downward so as to be narrower than the lower surface (it can also be said to be a very elongated parallelogram). As for the connecting member 32 and the diagonal member 33, similarly to the chord member 31, for example, a prismatic pipe having a rectangular cross section is used. Moreover, about the material of these each prismatic pipe, aluminum is used for weight reduction, and a fiber reinforced plastic may be used.

次に、ビーム体２における各プーリ２１，２２および中間ローラ２４並びに搬送用ベルト２５の高さ方向での設置位置について説明しておく。
すなわち、図５（ａ）に示すように、前端側プーリ２１の中心ａは中間支持部分２ｃの高さ中心ｃよりも高い位置（上弦部材寄り位置）にされるとともに、図５（ｂ）に示すように、後端側プーリ２２の中心ｂは中間支持部分２ｃの高さ中心ｃよりも低い位置にされており、さらに図５（ｃ）に示すように、少なくとも、連結支持部（前方支持位置）Ｋ１での搬送用ベルト２５の中心（言い換えれば、送り側ベルト２５ａと戻り側ベルト２５ｂとの高さ中心）ｄが、ビーム体２の高さ中心、正確には中間支持部分２ｃにおける高さ中心ｃよりも上側となるようにされている。全体を側面から見た場合、搬送用ベルト２５が、ベルト２５ａ，２５ｂ同士間の高さ方向における中心線がビーム体２の前端上側位置（上隅位置）と後端下側位置（下隅位置）とを結ぶ対角線に沿うように、直線状に配置されることになり、しかもその中心線が、少なくとも、連結支持部（前方支持位置）Ｋ１においては、ビーム体２の高さ方向の中心よりも上側位置となるようにされている。 Next, the installation positions in the height direction of the pulleys 21 and 22, the intermediate roller 24, and the conveyor belt 25 in the beam body 2 will be described.
That is, as shown in FIG. 5A, the center a of the front end side pulley 21 is set to a position higher than the height center c of the intermediate support portion 2c (position close to the upper chord member), as shown in FIG. As shown in FIG. 5, the center b of the rear end side pulley 22 is positioned lower than the height center c of the intermediate support portion 2c. Further, as shown in FIG. Position) The center of the conveying belt 25 at K1 (in other words, the height center of the feeding belt 25a and the returning belt 25b) d is the height center of the beam body 2, more precisely, the height at the intermediate support portion 2c. It is made to be above the center c. When viewed from the side as a whole, the center line in the height direction between the belts 25a and 25b of the conveyor belt 25 is such that the front end upper position (upper corner position) and the rear end lower position (lower corner position) of the beam body 2 are. Are arranged in a straight line so as to be along a diagonal line connecting them to each other, and the center line is at least at the connection support portion (front support position) K1 than the center of the beam body 2 in the height direction. The upper position is set.

この構成において、搬送用ベルト２５が駆動されて当該搬送用ベルト２５に張力Ｔが加わると、前端側プーリ２１（後端側プーリ２２も同様であるが）には、搬送方向に沿って２倍の張力（２×Ｔ）が働くことになり、このため、少なくとも、連結支持部Ｋ１においては、ビーム体２に上方への曲げモーメントが作用することになる。   In this configuration, when the conveying belt 25 is driven and a tension T is applied to the conveying belt 25, the front end pulley 21 (the same applies to the rear end pulley 22) doubles along the conveying direction. Therefore, an upward bending moment acts on the beam body 2 at least in the connection support portion K1.

ここで、被搬送物の搬送時にビーム体２に作用する曲げモーメントを図６に示しておく。
すなわち、ビーム体（図６（ａ）に示す）２に作用する自重および被搬送物の重量による下方への曲げモーメントＭ１は、図６（ｂ）に示す実線のようになる。曲げモーメントＭ１は、各支持部Ｋ１，Ｋ２で大きくなっているのが分かる。なお、Ｋ３は支持具２８による支持位置を示している。 Here, FIG. 6 shows the bending moment acting on the beam body 2 when the object to be conveyed is conveyed.
That is, the downward bending moment M1 due to the own weight acting on the beam body (shown in FIG. 6 (a)) and the weight of the conveyed object is as shown by the solid line in FIG. 6 (b). It can be seen that the bending moment M1 increases at each of the support portions K1 and K2. Note that K3 indicates a support position by the support tool 28.

これに対して、上記張力による上方への曲げモーメント（斜線にて示す）Ｍ２を差し引いた、すなわちＭ１からＭ２分が軽減された残りの曲げモーメントＭ３がビーム体２に作用することになる。   On the other hand, the remaining bending moment M3 obtained by subtracting the upward bending moment (shown by oblique lines) M2 due to the tension, that is, the amount of M2 from M1, is applied to the beam body 2.

従来の構成では、張力による曲げモーメントＭ２が付加（増大）されていたのに対して、本実施の形態では、この曲げモーメントＭ２が軽減されることになるため、搬送距離が長くなった場合でも、それ程、ビーム体２の強度を上げる必要がない（つまり、重量の増加を抑制し得る）。勿論、曲げモーメントを軽減することができるので、ビーム体２の前端（先端）での撓みの増加を抑制して、許容範囲内に収めることができる。また、前方片持部分での重量を軽減することができるので、車両の前後における安定度を向上させることができる。   In the conventional configuration, the bending moment M2 due to the tension is added (increased), but in the present embodiment, the bending moment M2 is reduced, so even when the transport distance becomes long. Therefore, it is not necessary to increase the strength of the beam body 2 (that is, an increase in weight can be suppressed). Of course, since the bending moment can be reduced, an increase in the bending at the front end (tip) of the beam body 2 can be suppressed and kept within an allowable range. Moreover, since the weight at the front cantilever portion can be reduced, the stability before and after the vehicle can be improved.

ところで、上記実施の形態においては、産業用車両を、貨物船に被搬送物を搬送するものとして説明したが、勿論、地上において、被搬送物を他の車両に積み込む作業、または被搬送物を他の車両から積み降ろす作業にも用いられるものである。   By the way, in the said embodiment, although the industrial vehicle was demonstrated as what conveys a to-be-conveyed object to a cargo ship, of course, the operation | work which loads a to-be-conveyed object on another vehicle on the ground, or a to-be-conveyed object is carried out. It is also used for loading and unloading from other vehicles.

本発明の実施の形態に係る産業用車両の全体側面図である。1 is an overall side view of an industrial vehicle according to an embodiment of the present invention. 同産業用車両におけるビーム体の側面図であり、（ａ）は前半部分を示し、（ｂ）は後半部分を示す。It is a side view of the beam body in the industrial vehicle, (a) shows the first half part, (b) shows the second half part. 図２（ａ）のＡ−Ａ断面図である。It is AA sectional drawing of Fig.2 (a). 図２（ａ）のＢ−Ｂ断面図である。It is BB sectional drawing of Fig.2 (a). 同ビーム体における搬送用ベルトの位置を説明する断面図で、（ａ）は前方片持部分を示し、（ｂ）は後方片持部分を示し、（ｃ）は連結支持部を示す。It is sectional drawing explaining the position of the belt for conveyance in the beam body, (a) shows a front cantilever part, (b) shows a back cantilever part, (c) shows a connection support part. 同ビーム体に作用する曲げモーメントを説明する図で、（ａ）はビーム体の構成を示し、（ｂ）は（ａ）で示されたビーム体に作用する曲げモーメント図である。It is a figure explaining the bending moment which acts on the beam body, (a) shows the structure of a beam body, (b) is a bending moment figure which acts on the beam body shown by (a). 従来例のビーム体の構造を示す側面図である。It is a side view which shows the structure of the beam body of a prior art example.

符号の説明Explanation of symbols

１ 車両本体
２ ビーム体
３ ベルトコンベヤ
２１ 前端側プーリ
２２ 後端側プーリ
２３ 駆動用プーリ
２４ 中間ローラ
２５ 搬送用ベルト
２５ａ 送り側ベルト
２５ｂ 戻り側ベルト
３１ 弦部材 DESCRIPTION OF SYMBOLS 1 Vehicle main body 2 Beam body 3 Belt conveyor 21 Front end side pulley 22 Rear end side pulley 23 Driving pulley 24 Intermediate roller 25 Conveying belt 25a Feeding side belt 25b Return side belt 31 String member

Claims (1)

車両本体に中間部分が前後２箇所で支持された長尺のビーム体にベルトコンベヤが配置されてなる産業用車両であって、
上記ビーム体の各支持位置から先端までの前方または後方の片持部分のうち、長い方の片持部分におけるベルトコンベヤの上下の送り側ベルトと戻り側ベルトとの間の高さ中心が、当該長い方の片持部分におけるビーム体の高さ中心よりも上側に位置するように構成したことを特徴とする産業用車両。
An industrial vehicle in which a belt conveyor is arranged on a long beam body that is supported at two front and rear intermediate portions on a vehicle body,
The center of height between the upper and lower feed belts and the return belt of the belt conveyor in the longer cantilever portion of the front and rear cantilever portions from each support position to the tip of the beam body, An industrial vehicle configured to be positioned above the height center of a beam body in a longer cantilever portion.
JP2006157936A 2006-06-07 2006-06-07 Industrial vehicle Active JP5084181B2 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5651727U (en) * 1979-09-22 1981-05-08
JPS6241715U (en) * 1985-08-30 1987-03-12
JPH08301429A (en) * 1995-05-02 1996-11-19 Komatsu Ltd Self-travelling conveyor
JP2004256206A (en) * 2003-02-25 2004-09-16 Komatsu Ltd Self-propelled conveyer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5651727U (en) * 1979-09-22 1981-05-08
JPS6241715U (en) * 1985-08-30 1987-03-12
JPH08301429A (en) * 1995-05-02 1996-11-19 Komatsu Ltd Self-travelling conveyor
JP2004256206A (en) * 2003-02-25 2004-09-16 Komatsu Ltd Self-propelled conveyer

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