JP6757956B2 - Bogie - Google Patents

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JP6757956B2
JP6757956B2 JP2016244491A JP2016244491A JP6757956B2 JP 6757956 B2 JP6757956 B2 JP 6757956B2 JP 2016244491 A JP2016244491 A JP 2016244491A JP 2016244491 A JP2016244491 A JP 2016244491A JP 6757956 B2 JP6757956 B2 JP 6757956B2
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support frame
pedestal
hinge
protrusion
trolley
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JP2018095199A (en
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一輝 春日
一輝 春日
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Sanko Co Ltd
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Sanko Co Ltd
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Description

本発明は、下面にキャスターを有する支持フレーム上に台盤を取り付けてなる台車に関する。 The present invention relates to a trolley in which a pedestal is mounted on a support frame having casters on the lower surface.

従来、この種の台車として、支持フレームの平面形状が後方に向かって徐々に拡開する門形構造をなしかつ、台盤が支持フレームの前端部にヒンジにて連結されたものが知られている。この台車は、不使用時に台盤を傾斜姿勢にして支持フレームの内側に他の台車の支持フレームを受容することができ、これにより、複数の台車をコンパクトに一列に纏めることができる(例えば、特許文献1参照)。 Conventionally, as this type of dolly, it is known that the plan shape of the support frame has a gate-shaped structure that gradually expands rearward, and the pedestal is connected to the front end of the support frame by a hinge. There is. This trolley can receive the support frames of other trolleys inside the support frame by tilting the pedestal when not in use, whereby a plurality of trolleys can be compactly grouped in a row (for example,). See Patent Document 1).

登録実用新案第3039549号公報(図1、図5)Registered Utility Model No. 3039549 (Figs. 1 and 5)

しかしながら、上記した従来の台車は、走行中に台盤が障害物に当接することで、ヒンジが破損・変形することが問題になっていた。特に、台車が傾斜姿勢の状態で障害物に当接した場合にヒンジが容易に破損することが問題になっていた。 However, in the above-mentioned conventional bogie, there is a problem that the hinge is damaged or deformed when the base comes into contact with an obstacle during traveling. In particular, there has been a problem that the hinge is easily damaged when the dolly comes into contact with an obstacle in an inclined posture.

本発明は、上記事情に鑑みてなされたもので、従来より耐久性が高い台車の提供を目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a carriage having higher durability than before.

上記目的を達成するためになされた請求項1の発明は、台盤を下方から支持しかつ下面にキャスターを有する支持フレームを備え、その支持フレームの平面形状が後方に向かって徐々に拡開する門形構造をなすと共に、前記台盤が前記支持フレームの前端部にヒンジにて連結され、前記台盤を傾斜姿勢にして前記支持フレームの内側に他の台車の前記支持フレームを受容可能な台車において、前記台盤及び前記支持フレームの前記ヒンジ寄り位置にそれぞれ設けられて水平方向で互いに対向し、前記支持フレームに対する前記台盤の水平方向の位置ずれを規制するずれ規制部を備え、前記台盤を水平姿勢から前記傾斜姿勢に変更しても、前記台盤の前記ずれ規制部と前記支持フレームの前記ずれ規制部とが水平方向で互いに対向した状態が維持される台車である。 The invention of claim 1 made to achieve the above object includes a support frame that supports the base from below and has casters on the lower surface, and the horizontal shape of the support frame gradually expands rearward. A trolley that has a portal structure, the pedestal is connected to the front end of the support frame by a hinge, the pedestal is tilted, and the support frame of another trolley can be received inside the support frame. The pedestal is provided with a displacement regulating portion which is provided at a position near the hinge of the pedestal and the support frame, faces each other in the horizontal direction, and regulates the horizontal displacement of the pedestal with respect to the support frame. Even if the board is changed from the horizontal posture to the inclined posture, the slip regulating portion of the base and the slip regulating portion of the support frame are maintained in a state of facing each other in the horizontal direction .

請求項2の発明は、前記台盤を前記傾斜姿勢に保持する保持部材を備える請求項1に記載の台車である。 The invention of claim 2 is the trolley according to claim 1, further comprising a holding member for holding the pedestal in the inclined posture .

請求項3の発明は、前記支持フレームの前記ずれ規制部として、前記支持フレームの前端部における横方向の中間部で前後方向に延びる縦梁が設けられ、前記台盤の前記ずれ規制部として、前記台盤全体から下方に突出し、前記縦梁を挟んで対向する1対のずれ規制突部が設けられている請求項1又は2に記載の台車である。 According to the third aspect of the present invention, as the deviation regulating portion of the support frame, a vertical beam extending in the front-rear direction is provided at an intermediate portion in the lateral direction at the front end portion of the support frame, and the displacement regulating portion of the base plate is used. The trolley according to claim 1 or 2 , wherein a pair of slip-regulating protrusions that project downward from the entire pedestal and face each other across the vertical beam are provided .

請求項4の発明は、前記ヒンジは、前記支持フレームの前端面より後方に配置されると共に、前記台盤の下面のうち前記ヒンジより前側部分を後側部分より上方にずらして、前記台盤と前記支持フレームとの間に前記台盤の傾動を許容する傾動許容空間を備えた請求項1乃至3の何れか1の請求項に記載の台車である。 According to the fourth aspect of the present invention, the hinge is arranged behind the front end surface of the support frame, and the front side portion of the lower surface of the pedestal is shifted upward from the rear side portion of the lower surface of the pedestal. The trolley according to any one of claims 1 to 3, wherein a tilting allowable space for allowing tilting of the pedestal is provided between the support frame and the supporting frame.

請求項5の発明は、前記台盤の前端面が、前記支持フレームの前端面に対して後方又は面一に配置されている請求項4に記載の台車である。 The invention according to claim 5 is the trolley according to claim 4, wherein the front end surface of the pedestal is arranged rearward or flush with respect to the front end surface of the support frame.

請求項1の台車では、台盤及び支持フレームのヒンジ寄り位置にそれぞれ設けられたずれ規制部が水平方向で互いに対向しているので、台盤が障害物に当接した際の衝撃をずれ規制部で受け止めてヒンジへの衝撃を軽減することができる。これにより、従来より台車の耐久性を高くすることができる。また、台盤が傾斜姿勢になっても台盤のずれ規制部と支持フレームのずれ規制部とが水平方向で互いに対向した状態が維持され、ヒンジへの衝撃を軽減することができる。これにより、従来、特に問題になっていた台盤が傾斜姿勢になっている状態での台車の耐久性を向上させることが可能になる。 In the dolly of claim 1, since the deviation regulating portions provided at positions near the hinges of the pedestal and the support frame face each other in the horizontal direction, the impact when the pedestal comes into contact with an obstacle is regulated. It can be received by the part to reduce the impact on the hinge. As a result, the durability of the dolly can be made higher than before. Further , even if the pedestal is in an inclined posture, the displacement regulating portion of the pedestal and the displacement regulating portion of the support frame are maintained in a state of facing each other in the horizontal direction, and the impact on the hinge can be reduced. As a result, it becomes possible to improve the durability of the bogie when the bogie is in an inclined posture, which has been a particular problem in the past.

ずれ規制部の構造としては、支持フレーム側のずれ規制部が、支持フレームから上方に突出する突部構造をなし、そのずれ規制部を受容する凹部又は貫通孔を台盤にずれ規制部として備えてもよい。この場合、支持フレーム側のずれ規制部を突部構造とした場合には、そのずれ規制突部が台盤より上方に突出しない大きさにするという制約を受けるが、請求項3の構成のように、支持フレームのずれ規制部として、支持フレームの前端部における横方向の中間部で前後方向に延びる縦梁が設けられ、台盤のずれ規制部として、台盤全体から下方に突出し、縦梁を挟んで対向する1対のずれ規制突部が設けられている構造とした場合には、上記した制約を受けない As for the structure of the displacement regulating portion, the displacement regulating portion on the support frame side has a protruding portion structure protruding upward from the support frame, and the base plate is provided with a recess or a through hole for receiving the displacement regulating portion as a displacement regulating portion. You may . In this case, when the deviation regulating portion on the support frame side has a protruding portion structure, there is a restriction that the displacement regulating protrusion does not protrude upward from the base plate, but the configuration according to claim 3 is applied. A vertical beam extending in the front-rear direction is provided at the middle portion in the lateral direction at the front end portion of the support frame as a displacement regulating portion of the support frame, and a vertical beam protruding downward from the entire pedestal as a displacement regulating portion of the pedestal. In the case of a structure in which a pair of slip-regulating protrusions facing each other are provided , the above-mentioned restrictions are not applied .

請求項4の台車では、ヒンジが、支持フレームの前端面より後方に配置されているので、ヒンジを障害物との衝突から保護することができる。また、ヒンジを単に支持フレームの前端面より後方に配置すると、台盤を傾動させたときに台盤の先端部と支持フレームとの干渉が問題になり得るが、本発明では、台盤の下面のうちヒンジより前側部分を後側部分より上方にずらして、台盤と支持フレームとの間に台盤の傾動を許容する傾動許容空間を備えたので、そのような干渉を回避することができる。 In the dolly of claim 4, since the hinge is arranged behind the front end surface of the support frame, the hinge can be protected from collision with an obstacle. Further, if the hinge is simply arranged behind the front end surface of the support frame, interference between the tip of the base and the support frame may become a problem when the base is tilted. However, in the present invention, the lower surface of the base is used. Of these, the front part of the hinge is shifted upward from the rear part, and a tilting allowance space is provided between the base and the support frame to allow the base to tilt, so that such interference can be avoided. ..

請求項5の台車では、台盤の前端面が、支持フレームの前端面に対して後方又は面一に配置されているので、台車が前進して壁や他の台車に衝突したときに、台盤と支持フレームとを引き離すような負荷がかかり難くなる。これにより、台車の耐久性が向上する。 In the trolley of claim 5, since the front end surface of the pedestal is arranged rearward or flush with respect to the front end surface of the support frame, when the trolley moves forward and collides with a wall or another trolley, the trolley It becomes difficult to apply a load that separates the board from the support frame. This improves the durability of the dolly.

本発明の第1実施形態に係る台車の斜視図Perspective view of the dolly according to the first embodiment of the present invention. 台車のフレームの斜視図Perspective view of the frame of the dolly (A)ヒンジの斜視図,(B)保持部材の斜視図(A) A perspective view of the hinge, (B) A perspective view of the holding member 台車の前端部の側断面図Side sectional view of the front end of the dolly 背面フレームの側断面図Side sectional view of the rear frame 台盤の下側斜視図Lower perspective view of the pedestal 台盤の後端部の下側斜視図Lower perspective view of the rear end of the pedestal 台盤の後端部の側断面図Side sectional view of the rear end of the pedestal 台盤の後端部の上側斜視図Upper perspective view of the rear end of the pedestal 台盤の前端部の下側斜視図Lower perspective view of the front end of the pedestal 台盤の後側角部近傍の下側斜視図Lower perspective view near the posterior corner of the pedestal 台車の下側斜視図Lower perspective view of the dolly 台盤が水平姿勢の台車の側断面図Side sectional view of the dolly with the pedestal in a horizontal position 台盤が傾斜姿勢の台車の側断面図Side sectional view of the dolly with the pedestal tilted (A)台盤が水平姿勢の台車の前端部の側断面図,(B)台盤が傾斜姿勢の台車の前端部の側断面図(A) Side sectional view of the front end of the dolly with the pedestal in a horizontal position, (B) Side sectional view of the front end of the dolly with the pedestal in an inclined position. (A)後側係合突部の上面に保持部材が当接した状態の側断面図、(B)後側係合突部に保持部材が係合した状態の側断面図(A) Side sectional view in a state where the holding member is in contact with the upper surface of the rear engaging protrusion, (B) Side sectional view in a state where the holding member is engaged in the rear engaging protrusion. 台盤が傾斜姿勢の台車の斜視面The perspective surface of the dolly with the pedestal tilted 複数の台車を重ねた状態の斜視図Perspective view of multiple trolleys stacked 複数の台車を重ねた状態の側断図Side view with multiple trolleys stacked (A)第2実施形態の台車の側断面図,(B)その台車の台盤が傾斜姿勢となった状態の側断面図(A) Side sectional view of the dolly of the second embodiment, (B) Side sectional view of the dolly in an inclined posture. (A)第3実施形態の台車の側断面図,(B)その台車の台盤が傾斜姿勢となった状態の側断面図(A) Side sectional view of the dolly of the third embodiment, (B) Side sectional view of the dolly in an inclined posture.

[第1実施形態]
以下、本発明の一実施形態を図1〜図19に基づいて説明する。図1に示すように、本実施形態の台車10は、キャスター11を下面に備える金属製のフレーム12に樹脂製の台盤40を取り付けてなる。
[First Embodiment]
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 19. As shown in FIG. 1, the carriage 10 of the present embodiment is formed by attaching a resin base 40 to a metal frame 12 having casters 11 on the lower surface.

先ずは、フレーム12の構造について説明する。フレーム12は、台盤40を下方から支持する支持フレーム13の後端部から背面フレーム30が起立した構造をなしている。図2に示すように、支持フレーム13は、後方に向かって徐々に拡開する門形構造をなしている。具体的には、支持フレーム13は、断面が縦長の長方形の角材を略角U字形の門形状に折り曲げてなるフレーム主体部14を備え、そのフレーム主体部14の前記角U字の底辺に相当する前端ビーム15が支持フレーム13の前端部で横方向に直線状に延び、前記角U字の両側辺に相当する1対のサイドビーム16,16が前端ビーム15の両端部から後方に直線状に延びて後方に向かうに従って互いに離間するように開脚している。 First, the structure of the frame 12 will be described. The frame 12 has a structure in which the back frame 30 stands up from the rear end of the support frame 13 that supports the base 40 from below. As shown in FIG. 2, the support frame 13 has a gantry structure that gradually expands toward the rear. Specifically, the support frame 13 includes a frame main body portion 14 formed by bending a rectangular member having a vertically long cross section into a gate shape having a substantially U-shaped cross section, and corresponds to the base of the square U-shape of the frame main body portion 14. The front end beam 15 extends linearly in the lateral direction at the front end portion of the support frame 13, and a pair of side beams 16, 16 corresponding to both sides of the U-shaped angle are linearly rearward from both ends of the front end beam 15. The legs are opened so as to extend toward the rear and separate from each other.

また、1対のサイドビーム16,16の前端寄り位置の間には、横梁17が差し渡されて溶接され、その横梁17の長手方向の中央部と前端ビーム15の長手方向の中央部との間には、本発明に係る「ずれ規制部」に相当する縦梁18が差し渡されて溶接されている。これら横梁17及び縦梁18は、フレーム主体部14を構成する角材と同じ高さで幅が略2倍となった断面略正方形の角材で構成され、横梁17及び縦梁18の上面及び下面は、フレーム主体部14の上面及び下面と面一になっている。 Further, a cross beam 17 is extended and welded between the positions of the pair of side beams 16 and 16 near the front end, and the central portion of the cross beam 17 in the longitudinal direction and the central portion of the front end beam 15 in the longitudinal direction are formed. A vertical beam 18 corresponding to the "deviation regulating portion" according to the present invention is extended and welded between them. The cross beams 17 and the vertical beams 18 are made of square timbers having a substantially square cross section at the same height as the square timbers constituting the frame main body portion 14 and having a width substantially doubled, and the upper and lower surfaces of the cross beams 17 and the vertical beams 18 are formed. , It is flush with the upper surface and the lower surface of the frame main body portion 14.

横梁17の両端部とサイドビーム16,16とが交差する部分の下面には、四角形の前側キャスター取付板19,19が溶接されている。また、各前側キャスター取付板19の四隅には、螺子孔19Aが形成されている。そして、キャスター11の支持金具11Aの上面四隅に形成された貫通孔に下方から図示しないボルトが通され、それらボルトが螺子孔19Aに締め付けられて、キャスター11が前側キャスター取付板19に取り付けられている。 Square front caster mounting plates 19 and 19 are welded to the lower surface of the portion where both ends of the cross beam 17 and the side beams 16 and 16 intersect. Further, screw holes 19A are formed at the four corners of each front caster mounting plate 19. Then, bolts (not shown) are passed through the through holes formed at the four corners of the upper surface of the support metal fitting 11A of the caster 11 from below, and these bolts are tightened in the screw holes 19A, and the caster 11 is attached to the front caster mounting plate 19. There is.

サイドビーム16,16の後端部の下面には、後側キャスター取付板20,20が溶接されている。後側キャスター取付板20は、前後方向に長い長方形の平板における前側の両角部と、後側の内側角部とを斜めにカットした形状をなしている。また、後側キャスター取付板20にも前側キャスター取付板19と同様に螺子孔20Aが形成されて、キャスター11がボルトにて後側キャスター取付板20に取り付けられている。 Rear caster mounting plates 20 and 20 are welded to the lower surface of the rear ends of the side beams 16 and 16. The rear caster mounting plate 20 has a shape in which both front corners and an inner corner on the rear side of a rectangular flat plate long in the front-rear direction are cut diagonally. Further, the rear caster mounting plate 20 is also formed with screw holes 20A in the same manner as the front caster mounting plate 19, and the casters 11 are attached to the rear caster mounting plate 20 with bolts.

両後側キャスター取付板20,20のうち互いに離れた側縁部からは側壁21,21が起立していて、各側壁21の後端部が後側キャスター取付板20の後縁部に沿うように直角に曲げられている。また、側壁21の前端から前端寄り位置までの間は後側に向かって徐々に高くなり、前端寄り位置より後側は均一高さになっている。さらに、後側キャスター取付板20の後端部上には、円筒状の支持スリーブ29が軸方向を上下方向に向けて載置されかつ、側壁21の後端屈曲部に内側から宛われた状態で溶接されている。 Side walls 21 and 21 stand up from the side edges of the rear caster mounting plates 20 and 20 that are separated from each other, so that the rear ends of the side walls 21 are along the rear edges of the rear caster mounting plates 20. It is bent at a right angle to. Further, the height from the front end of the side wall 21 to the position near the front end gradually increases toward the rear side, and the height on the rear side from the position near the front end becomes uniform. Further, a cylindrical support sleeve 29 is placed on the rear end portion of the rear caster mounting plate 20 with the axial direction facing up and down, and is addressed to the rear end bending portion of the side wall 21 from the inside. It is welded in.

前端ビーム15のうち横梁17と対向する内側面には、1対のヒンジ22が取り付けられている。具体的には、前端ビーム15の内側面の両端寄り位置には、下縁部に沿って延びた断面四角形の支持部材23が溶接されている。そして、図3(A)に示すように、円筒状の1対の固定筒体24,24が各支持部材23の上面両端部と前端ビーム15の内側面とに当接した状態で溶接されている。また、1対の固定筒体24,24の間には、回動板25が配置されている。回動板25は、帯板状の板金の一端部を固定筒体24と同一径の円筒状に巻回して筒部26とした構造をなしている。また、回動板25の長手方向の2箇所には、1対の螺子孔25A,25Aが形成されている。そして、筒部26が1対の固定筒体24,24の同軸上に位置しかつ、図4に示すように回動板25を水平姿勢にしたときに、回動板25の上面と支持フレーム13全体の上面とが略面一となるように構成されている。そして、1対の固定筒体24,24と筒部26とにヒンジピン27が挿通され、ヒンジピン27の両端部に図示しない抜け止め用のカラーが溶接されている。これらによりヒンジ22が構成されている。 A pair of hinges 22 are attached to the inner side surface of the front end beam 15 facing the cross beam 17. Specifically, a support member 23 having a quadrangular cross section extending along the lower edge is welded to a position near both ends of the inner surface of the front end beam 15. Then, as shown in FIG. 3A, a pair of cylindrical fixed cylinders 24, 24 are welded in a state of being in contact with both ends of the upper surface of each support member 23 and the inner side surface of the front end beam 15. There is. Further, a rotating plate 25 is arranged between the pair of fixed cylinders 24, 24. The rotating plate 25 has a structure in which one end of a strip-shaped sheet metal is wound into a cylindrical shape having the same diameter as the fixed tubular body 24 to form a tubular portion 26. Further, a pair of screw holes 25A and 25A are formed at two positions in the longitudinal direction of the rotating plate 25. Then, when the tubular portion 26 is located coaxially with the pair of fixed tubular bodies 24, 24 and the rotating plate 25 is in the horizontal posture as shown in FIG. 4, the upper surface of the rotating plate 25 and the support frame are formed. It is configured so that the upper surface of the entire 13 is substantially flush with the upper surface. Then, hinge pins 27 are inserted into the pair of fixed cylinders 24, 24 and the cylinder portion 26, and collars for preventing slipping (not shown) are welded to both ends of the hinge pins 27. These make up the hinge 22.

一方、背面フレーム30は、図2に示すように、パイプ材を門形に屈曲させてなるフレーム主体部30Mを備え、そのフレーム主体部30Mの1対の脚部32,32が前述の1対の支持スリーブ29(図2には、一方の側壁21の支持スリーブ29のみが示されている)に連結されている。具体的には、フレーム主体部30Mを構成するパイプ材と、支持スリーブ29とは同一の内外径をなしている。そして、各支持スリーブ29内に図示しないシャフトが挿入されて、それらシャフトを各脚部32に下方から挿入することで、各脚部32が支持スリーブ29上に起立しかつ側壁21の後端の屈曲部の内側に宛われた状態となり、その状態で各脚部32が側壁21及び支持スリーブ29に溶接されている。 On the other hand, as shown in FIG. 2, the rear frame 30 includes a frame main body portion 30M formed by bending a pipe material into a gate shape, and a pair of leg portions 32, 32 of the frame main body portion 30M is a pair described above. It is connected to the support sleeve 29 (in FIG. 2, only the support sleeve 29 of one side wall 21 is shown). Specifically, the pipe material constituting the frame main body portion 30M and the support sleeve 29 have the same inner and outer diameters. Then, shafts (not shown) are inserted into each support sleeve 29, and by inserting these shafts into each leg 32 from below, each leg 32 stands on the support sleeve 29 and the rear end of the side wall 21. Each leg 32 is welded to the side wall 21 and the support sleeve 29 in a state of being addressed to the inside of the bent portion.

なお、脚部32,32は、上端寄り位置で僅かに後方に曲げられている。これにより、脚部32,32の上端部間を連絡している上辺部33は、支持フレーム13の後端部より後方に位置している。 The legs 32, 32 are slightly bent rearward at a position near the upper end. As a result, the upper side portion 33 connecting the upper ends of the legs 32 and 32 is located behind the rear end portion of the support frame 13.

1対の脚部32,32の上端寄り位置の間には、架橋部34が差し渡されて溶接されている。架橋部34は、フレーム主体部30Mを構成するパイプ材より僅かに小径になっている。 A cross-linking portion 34 is extended and welded between the positions of the pair of legs 32, 32 near the upper end. The cross-linked portion 34 has a slightly smaller diameter than the pipe material constituting the frame main portion 30M.

架橋部34の長手方向の中央部には、保持部材35が取り付けられている。図3(B)に示すように、保持部材35は、例えば、断面円形の線材を折り曲げてなり、横方向に延びた下辺部36の両端部から1対の縦辺部37,37が上方に直角曲げされ、それら1対の縦辺部37,37の上端部から1対の回動軸部37A,37Aが内側に直角曲げされた形状をなしている。また、下辺部36、縦辺部37,37及び回動軸部37A,37Aの中心軸は、同一平面内に収まっている。そして、回動軸部37A,37Aに嵌合されたスリーブ38,38が架橋部34の下面に溶接されている。これにより、保持部材35が架橋部34に回動可能に連結され、通常は、自重により架橋部34から真下に垂下した姿勢(以下、これを「原点姿勢」という)になっている。 A holding member 35 is attached to the central portion of the crosslinked portion 34 in the longitudinal direction. As shown in FIG. 3B, for example, the holding member 35 is formed by bending a wire rod having a circular cross section, and a pair of vertical side portions 37, 37 upward from both ends of a lower side portion 36 extending in the lateral direction. It is bent at a right angle, and a pair of rotating shafts 37A, 37A are bent inward from the upper ends of the pair of vertical side portions 37, 37. Further, the central axes of the lower side portions 36, the vertical side portions 37, 37, and the rotation shaft portions 37A, 37A are contained in the same plane. Then, sleeves 38, 38 fitted to the rotating shaft portions 37A, 37A are welded to the lower surface of the cross-linked portion 34. As a result, the holding member 35 is rotatably connected to the cross-linked portion 34, and is usually in a posture of hanging directly below from the cross-linked portion 34 due to its own weight (hereinafter, this is referred to as an “origin posture”).

保持部材35には、原点姿勢から前方への回動可能を規制するストッパ部39が設けられている。ストッパ部39は、上下に延びるパイプ片を一方の縦辺部37の上端部に溶接してなる。そして、保持部材35が原点姿勢になったときに、ストッパ部39の上端部が架橋部34に当接することで、保持部材35の原点姿勢から前方への回動を規制する。また、図5に示すように、架橋部34の軸方向から見た場合に、原点姿勢の保持部材35(ストッパ部39を含む)の全体が脚部32と重なり、脚部32より前方及び後方に突出しない構成になっている。なお、ストッパ部39は、架橋部34側に設けられていてもよい。具体的には、架橋部34にパイプ片やブロック等を溶接して原点姿勢の保持部材35の一部と当接するストッパ部39としてもよい。 The holding member 35 is provided with a stopper portion 39 that regulates the rotation from the origin posture to the front. The stopper portion 39 is formed by welding a pipe piece extending vertically to the upper end portion of one of the vertical side portions 37. Then, when the holding member 35 is in the origin posture, the upper end portion of the stopper portion 39 comes into contact with the bridging portion 34, thereby restricting the forward rotation of the holding member 35 from the origin posture. Further, as shown in FIG. 5, when viewed from the axial direction of the bridge portion 34, the entire holding member 35 (including the stopper portion 39) in the origin posture overlaps with the leg portion 32, and is forward and backward from the leg portion 32. It has a structure that does not protrude. The stopper portion 39 may be provided on the bridge portion 34 side. Specifically, a pipe piece, a block, or the like may be welded to the crosslinked portion 34 to form a stopper portion 39 that comes into contact with a part of the holding member 35 in the origin posture.

次に、台盤40の構造について説明する。図1に示すように、台盤40全体の平面形状は、長方形をなし、その横幅は背面フレーム30の脚部32,32同士の間隔と略同一で、縦幅は支持フレーム13と前後方向の全長と略同一になっている。また、台盤40の四隅は円弧状に湾曲していて、前側の両角部の円弧の曲率半径の方が、後側の両角部の円弧の曲率半径より大きくなっている。 Next, the structure of the base 40 will be described. As shown in FIG. 1, the planar shape of the entire base 40 is rectangular, the width thereof is substantially the same as the distance between the legs 32, 32 of the back frame 30, and the vertical width is in the front-rear direction with the support frame 13. It is almost the same as the total length. Further, the four corners of the base plate 40 are curved in an arc shape, and the radius of curvature of the arcs at both corners on the front side is larger than the radius of curvature of the arcs at both corners on the rear side.

図6に示すように、台盤40の上面全体には平板体41が備えられ、その平板体41の外縁部から外縁リブ42が垂下し、外縁リブ42の内側には格子リブが張り巡らされている。また、格子リブは、台盤40の下面の外縁部に配置された外縁格子リブ44と、外縁格子リブ44の内側で、台盤40の前端部に配置された前側格子リブ45と、外縁格子リブ44の内側で台盤40の後端部に配置された後側格子リブ46と、前側格子リブ45と後側格子リブ46との間の長方形の範囲に配置された中間格子リブ47とからなる。 As shown in FIG. 6, a flat plate body 41 is provided on the entire upper surface of the base plate 40, an outer edge rib 42 hangs down from the outer edge portion of the flat plate body 41, and lattice ribs are stretched inside the outer edge rib 42. ing. Further, the lattice ribs include an outer edge lattice rib 44 arranged on the outer edge portion of the lower surface of the base plate 40, a front side lattice rib 45 arranged on the front end portion of the base plate 40 inside the outer edge lattice rib 44, and an outer edge grid. From the rear grid ribs 46 arranged at the rear end of the pedestal 40 inside the ribs 44 and the intermediate grid ribs 47 arranged in a rectangular area between the front grid ribs 45 and the rear grid ribs 46. Become.

外縁格子リブ44は、他の格子リブに比べて格子の升目が最も細かい。また、外縁格子リブ44の升目は、台盤40の両サイドから前側の湾曲した角部までは2列に並び、台盤40の前端の外縁部では1列に並び、後端の外縁部では3列に並んでいる。また、台盤40の湾曲した角部においては外縁格子リブ44の升目は扇形になっている。さらに、台盤40の後端部には、横方向の両端寄り位置に1対の持ち手孔48,48が形成され、それら各持ち手孔48は、図7に示すように、外縁格子リブ44の幅方向の中央部分を横長の長円形に除去しかつその内面を長円形の筒形リブ48Aで覆った構造をなしている。 The outer edge lattice rib 44 has the finest grid squares as compared with other lattice ribs. The squares of the outer edge grid ribs 44 are arranged in two rows from both sides of the base 40 to the curved corners on the front side, in one row at the outer edge of the front end of the base 40, and in one row at the outer edge of the rear end. They are lined up in three rows. Further, in the curved corner portion of the base plate 40, the squares of the outer edge lattice rib 44 are fan-shaped. Further, at the rear end of the pedestal 40, a pair of handle holes 48, 48 are formed at positions near both ends in the lateral direction, and each of the handle holes 48 has an outer edge lattice rib as shown in FIG. The central portion of the 44 in the width direction is removed in a horizontally long oval shape, and the inner surface thereof is covered with an oval tubular rib 48A.

図6に示すように、中間格子リブ47の升目は横長の菱形をなし、他の格子リブに比べて最も大きくなっている。また、中間格子リブ47の1つの升目の前後方向の大きさは、両サイドの外縁格子リブ44における升目2つ分と同じ大きさをなし、左右方向の大きさは、後端の外縁格子リブ44における升目4つ分と同じになっている。また、中間格子リブ47の菱形の両横の頂点部分は、外縁格子リブ44の升目同士の境界部分に接続されている。なお、平板体41には、中間格子リブ47の各升目の中央に相当する位置にそれぞれ横長の長孔41A(図1参照)が形成されている。 As shown in FIG. 6, the squares of the intermediate lattice ribs 47 form a horizontally long rhombus, which is the largest as compared with other lattice ribs. Further, the size of one square of the intermediate lattice rib 47 in the front-rear direction is the same as the size of two squares in the outer edge lattice ribs 44 on both sides, and the size in the left-right direction is the size of the outer edge lattice rib at the rear end. It is the same as the four squares in 44. Further, the apex portions on both sides of the rhombus of the intermediate lattice rib 47 are connected to the boundary portion between the squares of the outer edge lattice rib 44. The flat plate body 41 is formed with horizontally long elongated holes 41A (see FIG. 1) at positions corresponding to the centers of the squares of the intermediate lattice ribs 47.

図6に示すように、後側格子リブ46の升目は、横方向が台盤40の後端の外縁格子リブ44の升目2つ分と同じ大きさをなし、前後方向が台盤40の両サイドの外縁格子リブ44の升目1つ分と同じ大きさになっている。また、後側格子リブ46には、横方向の中央部分を後方に1列多く形成してなる後方拡張部46Aが備えられている。そして、図7に示すように、後方拡張部46Aの両端部を除き、後方拡張部46Aより後方の外縁格子リブ44が切除されて台盤40の後面中央に後端凹部49Aが形成され、その後端凹部49Aの奥面中央から後側係合突部50が後方に突出している。換言すれば、台盤40の後部の中央寄り位置の2箇所に切り込み49,49が形成されて、それら切り込み49,49の間が後側係合突部50になっている。 As shown in FIG. 6, the squares of the rear grid ribs 46 have the same size as the two squares of the outer edge grid ribs 44 at the rear end of the pedestal 40 in the lateral direction, and both of the pedestals 40 in the front-rear direction. It is the same size as one square of the outer edge grid rib 44 on the side. Further, the rear grid rib 46 is provided with a rear expansion portion 46A formed by forming one row more rearward central portions in the lateral direction. Then, as shown in FIG. 7, except for both ends of the rear expansion portion 46A, the outer edge lattice rib 44 rearward from the rear expansion portion 46A is cut off to form a rear end recess 49A in the center of the rear surface of the pedestal 40, and then. The rear engaging protrusion 50 projects rearward from the center of the back surface of the end recess 49A. In other words, cuts 49 and 49 are formed at two positions near the center of the rear portion of the base plate 40, and the space between the cuts 49 and 49 is the rear engaging protrusion 50.

図8に示すように、後側係合突部50は、平板体41から後方に向かって下るように傾斜して張り出した上部傾斜壁51の下面に複数のリブを備えてなる。また、図9に示すように、後側係合突部50は、前端から前端寄り位置に向かって徐々に横幅が狭くなり、前端寄り位置から後端まで均一な横幅をなしている。また、後側係合突部50の前端寄り位置から後端までの幅は、図17に示すように前述の保持部材35の内側に丁度収まる大きさになっている。 As shown in FIG. 8, the rear engaging protrusion 50 is provided with a plurality of ribs on the lower surface of the upper inclined wall 51 which is inclined and protrudes rearward from the flat plate body 41. Further, as shown in FIG. 9, the width of the rear engaging protrusion 50 gradually narrows from the front end toward the front end position, and has a uniform width from the front end side to the rear end. Further, the width from the position near the front end to the rear end of the rear engaging protrusion 50 is such that it fits inside the holding member 35 as shown in FIG.

図7に示すように、後側係合突部50の後端縁からは下面突部52が下方に突出している。下面突部52は、上部傾斜壁51の後端縁から鉛直下方に垂下した横リブ53と、上部傾斜壁51の後端寄り位置から鉛直下方に垂下した横リブ54との間を複数の縦リブ55で連絡してなる。また、その下面突部52と後端凹部49Aの奥面との間は、下面突部52の横リブ54よりも上部傾斜壁51からの突出量が小さい複数の縦リブ57によって連絡され、それら縦リブ57と、下面突部52の複数の縦リブ55とが同一直線上に配置されている。また、下面突部52の左右両端の縦リブ55と同一直線上に配置された縦リブ57は、上部傾斜壁51の基端部の外縁形状に沿って途中で横方向に屈曲している。 As shown in FIG. 7, the lower surface protrusion 52 projects downward from the rear end edge of the rear engagement protrusion 50. The lower surface protrusion 52 has a plurality of vertical ribs 53 that hang vertically downward from the rear end edge of the upper inclined wall 51 and a horizontal rib 54 that hangs vertically downward from a position near the rear end of the upper inclined wall 51. I will contact you with a plumb bob 55. Further, between the lower surface protrusion 52 and the back surface of the rear end recess 49A, a plurality of vertical ribs 57 having a smaller protrusion amount from the upper inclined wall 51 than the horizontal rib 54 of the lower surface protrusion 52 are connected to each other. The vertical ribs 57 and the plurality of vertical ribs 55 of the lower surface protrusion 52 are arranged on the same straight line. Further, the vertical ribs 57 arranged on the same straight line as the vertical ribs 55 at both the left and right ends of the lower surface protrusion 52 are bent in the lateral direction in the middle along the outer edge shape of the base end portion of the upper inclined wall 51.

図8に示すように、後側係合突部50の後端面は、その両隣に位置する台盤40の後端面と面一になっている。また、下面突部52の下面の後側半分は、その両隣の台盤40の後端部の下面と面一でかつ水平になっている。一方、下面突部52の下面の前側半分は、前上がりに傾斜した下ガイド面52Aになっている。そして、下面突部52と後端凹部49Aの奥面との間が、前述の保持部材35と係合する係合凹部50Aをなし、その係合凹部50A内に位置する下面突部52の前面が係合面52Bになっている。 As shown in FIG. 8, the rear end surface of the rear engaging protrusion 50 is flush with the rear end surface of the pedestal 40 located on both sides thereof. Further, the rear half of the lower surface of the lower surface protrusion 52 is flush with and horizontal to the lower surface of the rear end portion of the pedestal 40 on both sides thereof. On the other hand, the front half of the lower surface of the lower surface protrusion 52 is a lower guide surface 52A that is inclined forward. An engaging recess 50A that engages with the holding member 35 is formed between the lower surface protrusion 52 and the back surface of the rear end recess 49A, and the front surface of the lower surface protrusion 52 located in the engaging recess 50A. Is the engaging surface 52B.

ここで、下面突部52の下ガイド面52Aと上部傾斜壁51の上面(以下、「上ガイド面51A」いう)は、共に水平方向に対して前上がり(後ろ下がり)に傾斜していて、それらの傾斜角は、後述するように図16(A)の如く台盤40を傾斜姿勢にしたときに、依然として共に水平方向に対して前上がり(後ろ下がり)に傾斜した状態となる角度に設定されている。つまり、水平方向に対する台盤40の傾斜姿勢の傾斜角より、台盤40の上面に対する下ガイド面52A及び上ガイド面51Aの傾斜角の方向が大きくなっている。 Here, the lower guide surface 52A of the lower surface protrusion 52 and the upper surface of the upper inclined wall 51 (hereinafter, referred to as “upper guide surface 51A”) are both inclined forward (downward) with respect to the horizontal direction. As will be described later, these tilt angles are set so that when the pedestal 40 is tilted as shown in FIG. 16 (A), both of them are still tilted forward (backward) with respect to the horizontal direction. Has been done. That is, the direction of the inclination angle of the lower guide surface 52A and the upper guide surface 51A with respect to the upper surface of the base plate 40 is larger than the inclination angle of the inclination posture of the base plate 40 with respect to the horizontal direction.

図6に示すように、前側格子リブ45は、種々の大きさの升目を有する。また、前側格子リブ45の横方向の2箇所には、前側格子リブ45の縦リブが密集してなる強化部60,60が備えられて、中間格子リブ47と前端の外縁格子リブ44の間を連絡するように前後方向に延びている。また、図10に示すように、各強化部60のうち前側格子リブ45の横リブと交差する前後の2箇所に円筒体61,61が備えられている。さらに、図4に示すように、各円筒体61の内側の貫通孔62の上端部には、座ぐり部62Aが設けられている。そして、各強化部60の下面に支持フレーム13のヒンジ22における回動板25が宛われ、ボルトBが各貫通孔62に上方から通されて回動板25の螺子孔25Aに締め付けられている。このようにして、図12に示すように、台盤40が支持フレーム13の先端部に回動可能に連結されている。 As shown in FIG. 6, the front lattice rib 45 has squares of various sizes. Further, at two locations in the lateral direction of the front grid rib 45, reinforcing portions 60, 60 in which the vertical ribs of the front grid rib 45 are densely provided are provided, and between the intermediate grid rib 47 and the outer edge grid rib 44 at the front end. It extends in the front-back direction to contact. Further, as shown in FIG. 10, cylindrical bodies 61 and 61 are provided at two positions before and after intersecting the lateral ribs of the front lattice rib 45 in each of the reinforcing portions 60. Further, as shown in FIG. 4, a counterbore portion 62A is provided at the upper end portion of the through hole 62 inside each cylindrical body 61. Then, the rotating plate 25 at the hinge 22 of the support frame 13 is addressed to the lower surface of each reinforcing portion 60, and the bolt B is passed through each through hole 62 from above and tightened to the screw hole 25A of the rotating plate 25. .. In this way, as shown in FIG. 12, the base plate 40 is rotatably connected to the tip end portion of the support frame 13.

図4及び図13に示すように、通常は、台盤40の回動中心(つまり、ヒンジピン27の中心)より後側は支持フレーム13の上面全体(即ち、横梁17,縦梁18、サイドビーム16の上面全体)に当接し、これにより台盤40が水平姿勢になる。また、図15(A)に示すように、台盤40が水平姿勢になった状態で台盤40の回動中心より前側部分と支持フレーム13の上面との間には、傾動許容空間40Eが形成される。そのために、図10に示すように、台盤40の前端部分における外縁格子リブ44の下面を上方に段付き状にずらしてオフセット部40Dが形成されている。そして、前記傾動許容空間40Eを利用して、図15(B)に示すように、台盤40を支持フレーム13に干渉させずに前下がりの傾斜姿勢にすることができる。また、図15(A)に示すように、水平姿勢の台盤40の前端面に対し、支持フレーム13の前端面は前方にずれている。これにより、台車10が前進して壁等に衝突したときに、ヒンジ22への衝撃を抑えることができる。 As shown in FIGS. 4 and 13, usually, the posterior side of the rotation center of the base 40 (that is, the center of the hinge pin 27) is the entire upper surface of the support frame 13 (that is, the horizontal beam 17, the vertical beam 18, and the side beam). It comes into contact with the entire upper surface of 16), which causes the base 40 to be in a horizontal position. Further, as shown in FIG. 15A, there is a tilting allowable space 40E between the portion in front of the rotation center of the pedestal 40 and the upper surface of the support frame 13 in the state where the pedestal 40 is in the horizontal posture. It is formed. Therefore, as shown in FIG. 10, the offset portion 40D is formed by shifting the lower surface of the outer edge lattice rib 44 at the front end portion of the base plate 40 in a stepped manner upward. Then, by utilizing the tilting allowable space 40E, as shown in FIG. 15B, the pedestal 40 can be tilted forward without interfering with the support frame 13. Further, as shown in FIG. 15A, the front end surface of the support frame 13 is displaced forward with respect to the front end surface of the pedestal 40 in the horizontal posture. As a result, when the carriage 10 moves forward and collides with a wall or the like, the impact on the hinge 22 can be suppressed.

図12に示すように、台盤40の前端部には、縦梁18を間に挟んで対向する本発明に係る「ずれ規制部」に相当する1対のずれ規制突部63,63が設けられている。図10に示すように、これらずれ規制突部63,63は、前後方向に長い断面長方形の直方体状をなしている。詳細には、ずれ規制突部63の前壁63Aは、前側格子リブ45と前端の外縁格子リブ44との境界の横リブ45Aの一部を下方に延長してなり、ずれ規制突部63の後壁63Bは、前側格子リブ45の前後方向の略中央の横リブ45Bの一部を下方に延長してなる。また、それら横リブ45A,45Bの間の別の横リブ45Cの一部を下方に延長して、ずれ規制突部63内を前後に仕切る内部壁63Cが形成されている。また、前側格子リブ45の横方向の中心には、前後方向に延びた縦リブ45Dが備えられ、その縦リブ45Dの両隣の縦リブ45Eの一部を下方に延長してずれ規制突部63の外側の側壁63Dが構成されている。一方、各ずれ規制突部63の内側の側壁63Eは、両縦リブ45D,45Eの間に配置されて台盤40の平板体41から垂下されている。そして、1対のずれ規制突部63,63の側壁63E,63E同士の間隔が縦梁18の横幅と略同一になっている。また、ずれ規制突部63の外側の側壁63Dの外面には、横リブ45A,45B,45Cから延長された三角リブ64が備えられている。なお、図15(A)に示すように、台盤40を水平姿勢にした状態でずれ規制突部63の下面は、縦梁18の下面より僅かに上方に位置するようになっている。 As shown in FIG. 12, at the front end portion of the base plate 40, a pair of deviation regulation protrusions 63, 63 corresponding to the "deviation regulation portion" according to the present invention, which face each other with the vertical beam 18 in between, are provided. Has been done. As shown in FIG. 10, these deviation regulating protrusions 63, 63 have a rectangular parallelepiped shape having a long cross section in the front-rear direction. Specifically, the front wall 63A of the slip-regulating protrusion 63 is formed by extending a part of the lateral rib 45A at the boundary between the front grid rib 45 and the outer edge grid rib 44 at the front end downward, and the slip-regulating protrusion 63 The rear wall 63B is formed by extending a part of the lateral rib 45B substantially in the center in the front-rear direction of the front lattice rib 45 downward. Further, a part of another lateral rib 45C between the lateral ribs 45A and 45B is extended downward to form an internal wall 63C that partitions the inside of the displacement regulating protrusion 63 back and forth. Further, a vertical rib 45D extending in the front-rear direction is provided at the center of the front lattice rib 45 in the horizontal direction, and a part of the vertical ribs 45E on both sides of the vertical rib 45D is extended downward to regulate the displacement. The outer side wall 63D of the is configured. On the other hand, the inner side wall 63E of each deviation regulation protrusion 63 is arranged between the vertical ribs 45D and 45E and hangs down from the flat plate 41 of the base 40. The distance between the side walls 63E and 63E of the pair of deviation control protrusions 63 and 63 is substantially the same as the width of the vertical beam 18. Further, a triangular rib 64 extended from the lateral ribs 45A, 45B, 45C is provided on the outer surface of the side wall 63D on the outer side of the deviation regulation protrusion 63. As shown in FIG. 15A, the lower surface of the deviation control protrusion 63 is located slightly above the lower surface of the vertical beam 18 when the base plate 40 is in the horizontal posture.

台盤40の後端部の横ずれを規制するために、図11に示すように、台盤40の後端部におけるサイドの外縁格子リブ44の横リブには、段差部44Dが形成され、その段差部44Dより内側の外縁格子リブ44及び後側格子リブ46の横リブが段付き状に下方に突出して下面係合突部44Fを構成している。そして、下面係合突部44Fが、支持フレーム13のサイドビーム16,16の内側面に係合することで、台盤40の後端部の横ずれが規制されると共に、台盤40の前方への移動も規制される。また、図1に示すように、台盤40が水平姿勢になると台盤40の後端部が背面フレーム30の脚部32,32の間に収まり、このことによっても台盤40の後端部の横ずれが規制される。 As shown in FIG. 11, a step portion 44D is formed on the lateral rib of the side outer edge lattice rib 44 at the rear end portion of the base plate 40 in order to regulate the lateral displacement of the rear end portion of the base plate 40. The outer edge lattice rib 44 inside the step portion 44D and the lateral ribs of the rear lattice rib 46 project downward in a stepped manner to form the lower surface engaging protrusion 44F. Then, the lower surface engaging protrusion 44F engages with the inner side surfaces of the side beams 16 and 16 of the support frame 13, so that the lateral displacement of the rear end portion of the pedestal 40 is restricted and the rear end portion is restricted to the front of the pedestal 40. Movement is also regulated. Further, as shown in FIG. 1, when the pedestal 40 is in the horizontal posture, the rear end portion of the pedestal 40 fits between the legs 32 and 32 of the rear frame 30, which also causes the rear end portion of the pedestal 40. Lateral slippage is regulated.

本実施形態の台車10の構成に関する説明は以上である。次に、この台車10の作用効果について説明する。台車10は、台盤40を水平姿勢にしてその上に荷物を載せて使用される。その台車10の使用時に、台盤40が衝撃を受ける最も多いケースとしては、台車10の車幅感覚と実際の車幅との不一致や、台車10の操作ミス等により、図1に示すように、台盤40の前側角部が障害物に衝突することが挙げられる。このような場合、従来の台車10では、台盤40と支持フレーム13とを引き離そうとする多大な負荷Fがヒンジ22にかかって破損又は変形することが問題になっていた。 This concludes the description of the configuration of the carriage 10 of the present embodiment. Next, the action and effect of the carriage 10 will be described. The trolley 10 is used by placing a load on the pedestal 40 in a horizontal position. As shown in FIG. 1, the most common case where the bogie 40 is impacted when the bogie 10 is used is due to a discrepancy between the vehicle width feeling of the bogie 10 and the actual vehicle width, an operation error of the bogie 10, and the like. , The front corner of the dolly 40 may collide with an obstacle. In such a case, in the conventional bogie 10, there is a problem that a large load F that tries to separate the base 40 and the support frame 13 is applied to the hinge 22 and is damaged or deformed.

これに対し、本実施形態の台車10では、図12に示すように、ヒンジ22の近傍においてずれ規制突部63,63と支持フレーム13の縦梁18とが水平方向で対向しているので、これらの当接により負荷を受け止めて、ヒンジ22への負荷を抑えることができる。詳細には、図1に示すように、台盤40の前側角部が障害物に衝突した場合の負荷Fには、横向成分Fxと縦向成分Fyとが含まれ、横向成分Fxが縦向成分Fyより大きくなることもしばしばある。そして、その負荷Fの横向成分Fxは、図12に示されたずれ規制突部63と縦梁18との当接によって受け止められ、ヒンジ22には付与されないか又は極めて小さくなる。つまり、本実施形態の台車10の構成によれば、従来に比べ、ヒンジ22が受ける負荷を抑えることができ、台車10の耐久性が向上する。 On the other hand, in the carriage 10 of the present embodiment, as shown in FIG. 12, the displacement regulating protrusions 63 and 63 and the vertical beam 18 of the support frame 13 face each other in the horizontal direction in the vicinity of the hinge 22. The load can be received by these abutments, and the load on the hinge 22 can be suppressed. Specifically, as shown in FIG. 1, the load F when the front corner portion of the pedestal 40 collides with an obstacle includes a horizontal component Fx and a vertical component Fy, and the horizontal component Fx is in the vertical direction. It is often larger than the component Fy. Then, the lateral component Fx of the load F is received by the contact between the displacement regulating protrusion 63 and the vertical beam 18 shown in FIG. 12, and is not applied to the hinge 22 or becomes extremely small. That is, according to the configuration of the carriage 10 of the present embodiment, the load received by the hinge 22 can be suppressed as compared with the conventional case, and the durability of the carriage 10 is improved.

また、台車10が障害物に対して正面衝突した場合に台車10が受ける負荷Fには横向成分Fxは含まれず、縦向成分Fyのみとなるが、本実施形態の台車10では、図4に示すように、支持フレーム13の前端面が台盤40の前端面より前方に位置しているので、負荷Fを支持フレーム13のみで受け止めることができ、その負荷Fが支持フレーム13と台盤40とを引き離す作用を抑えることができる。しかも、ヒンジ22は、支持フレーム13の内側面に配置されているので、ヒンジ22自体が障害物に衝突することも防がれる。これらによっても、ヒンジ22が受ける負荷を抑えることができ、台車10の耐久性が向上する。 Further, the load F received by the trolley 10 when the trolley 10 collides head-on with an obstacle does not include the lateral component Fx but only the vertical component Fy. However, in the trolley 10 of the present embodiment, FIG. As shown, since the front end surface of the support frame 13 is located in front of the front end surface of the base 40, the load F can be received only by the support frame 13, and the load F is the support frame 13 and the base 40. It is possible to suppress the action of separating and. Moreover, since the hinge 22 is arranged on the inner surface of the support frame 13, it is possible to prevent the hinge 22 itself from colliding with an obstacle. By these, the load received by the hinge 22 can be suppressed, and the durability of the carriage 10 is improved.

台車10は、不使用時には、図14及び図17に示すように、台盤40の後側係合突部50を背面フレーム30の保持部材35に係止して台盤40を傾斜姿勢に保持し、そのような状態の複数の台車10を、図18及び図19に示すように一列に並べて、前側の台車10の支持フレーム13の内側に後側の台車10の支持フレーム13を受容して(即ち、ネスティングして)纏めることができる。 When not in use, the dolly 10 holds the dolly 40 in an inclined posture by locking the rear engaging protrusion 50 of the dolly 40 to the holding member 35 of the back frame 30 as shown in FIGS. 14 and 17. Then, a plurality of carriages 10 in such a state are arranged in a row as shown in FIGS. 18 and 19, and the support frame 13 of the rear carriage 10 is received inside the support frame 13 of the front carriage 10. Can be put together (ie, nesting).

また、台盤40を傾斜姿勢にするためには、台盤40の持ち手部48(図1参照)に手をかけて持ち上げればよい。すると、後側係合突部50の上ガイド面51Aが図5に示された原点姿勢の保持部材35の下辺部36に当接する。このとき、上ガイド面51Aは、図16(A)に示すように、水平方向に対して後ろ下がりに傾斜した状態で保持部材35の下辺部36と当接するので、保持部材35を手で直接回動操作しなくても上ガイド面51Aと保持部材35の下辺部36との摺接によって保持部材35が後方に回動する。そして、後側係合突部50が保持部材35の下辺部36より上方まで持ち上げられたところで、図16(B)に示すように、保持部材35が自重によって原点姿勢に戻り、保持部材35の下辺部36が後側係合突部50の下面突部52より前側の係合凹部50Aに係合する。このとき、保持部材35のストッパ部39(図5参照)が架橋部34に衝突して跳ね返り、保持部材35の下辺部36が下面突部52の下面に当接する事態も起こり得る。しかしながら、そのような事態が起きても、下面突部52の前上がりの下ガイド面52Aに保持部材35の下辺部36が案内されて係合凹部50Aに係合する。また、保持部材35の下辺部36が下面突部52の下面に当接してから保持部材35を前側に回動操作することも考えられる。そのような場合も、保持部材35の下辺部36が下ガイド面52Aによって係合凹部50Aまで案内されるので、前記回動操作を容易に行うことができる。 Further, in order to make the base plate 40 in an inclined posture, the handle portion 48 (see FIG. 1) of the base plate 40 may be lifted by hand. Then, the upper guide surface 51A of the rear engaging protrusion 50 comes into contact with the lower side portion 36 of the holding member 35 in the origin posture shown in FIG. At this time, as shown in FIG. 16A, the upper guide surface 51A comes into contact with the lower side portion 36 of the holding member 35 in a state of being inclined backward downward with respect to the horizontal direction, so that the holding member 35 is directly held by hand. The holding member 35 rotates rearward due to the sliding contact between the upper guide surface 51A and the lower side portion 36 of the holding member 35 without the rotation operation. Then, when the rear engaging protrusion 50 is lifted above the lower side portion 36 of the holding member 35, as shown in FIG. 16B, the holding member 35 returns to the origin posture due to its own weight, and the holding member 35 The lower side portion 36 engages with the engaging recess 50A on the front side of the lower surface protrusion 52 of the rear engaging protrusion 50. At this time, the stopper portion 39 (see FIG. 5) of the holding member 35 may collide with the cross-linked portion 34 and bounce off, and the lower side portion 36 of the holding member 35 may come into contact with the lower surface of the lower surface protruding portion 52. However, even if such a situation occurs, the lower side portion 36 of the holding member 35 is guided by the lower guide surface 52A that rises forward of the lower surface protrusion portion 52 and engages with the engaging recess 50A. It is also conceivable that the lower side portion 36 of the holding member 35 comes into contact with the lower surface of the lower surface protrusion 52, and then the holding member 35 is rotated forward. Even in such a case, since the lower side portion 36 of the holding member 35 is guided to the engaging recess 50A by the lower guide surface 52A, the rotation operation can be easily performed.

ところで、台盤40が傾斜姿勢になった状態でも障害物に衝突し得る。これに対し、本実施形態の台車10では、図15(B)に示すように、台盤40が傾斜姿勢になってもずれ規制突部63と支持フレーム13の縦梁18とが水平方向で互いに対向した状態が維持されるので、ヒンジ22への衝撃を軽減することができる。これにより、従来、特に問題になっていた台盤40が傾斜姿勢になっている状態での台車10の耐久性を向上させることが可能になる。 By the way, even when the base 40 is in an inclined posture, it may collide with an obstacle. On the other hand, in the carriage 10 of the present embodiment, as shown in FIG. 15B, even if the pedestal 40 is in an inclined posture, the displacement regulating protrusion 63 and the vertical beam 18 of the support frame 13 are in the horizontal direction. Since the states facing each other are maintained, the impact on the hinge 22 can be reduced. This makes it possible to improve the durability of the trolley 10 when the pedestal 40, which has been particularly problematic in the past, is in an inclined posture.

また、台車10,10同士をネスティングする際に、図19に示すように、前側の台車10の支持フレーム13における横梁17に、後側の台車10の支持フレーム13の前端ビーム15の前端面が当接するが、本実施形態の台車10では、前端ビーム15の前端面の反対側にヒンジ22が配置されているので、前後の台車10,10の間にヒンジ22が挟まれて破損するようなことが防がれる。 Further, when nesting the carriages 10 and 10, as shown in FIG. 19, the front end surface of the front end beam 15 of the support frame 13 of the rear carriage 10 is attached to the cross beam 17 in the support frame 13 of the front carriage 10. However, in the carriage 10 of the present embodiment, since the hinge 22 is arranged on the opposite side of the front end surface of the front end beam 15, the hinge 22 is sandwiched between the front and rear carriages 10 and 10 and is damaged. Can be prevented.

なお、ネスティング状態で後側の台車10の支持フレーム13の前端面が前側の台車10の支持フレーム13の横梁17に当接することで、後側の台車10のサイドビーム16,16(図18参照)の外側面と、前側の台車10のサイドビーム16,16の内側面との間にクリアランスが形成される構成とすれば、後側の台車10の支持フレーム13が前側の台車10の支持フレーム13の内側に食い込んで抜けなくなるような事態の発生を防ぐことができる。 In the nesting state, the front end surface of the support frame 13 of the rear carriage 10 comes into contact with the cross beam 17 of the support frame 13 of the front carriage 10, so that the side beams 16 and 16 of the rear carriage 10 (see FIG. 18). ) And the inner side surfaces of the side beams 16 and 16 of the front carriage 10, the support frame 13 of the rear carriage 10 is the support frame of the front carriage 10. It is possible to prevent the occurrence of a situation in which the inside of the 13 is stuck and cannot be pulled out.

[第2実施形態]
本発明の第2実施形態の台車10Vは、図20に示されており、台盤40Vに備えられたずれ規制突部63Vの構造が第1実施形態とは異なる。そのずれ規制突部63Vは、第1実施形態のずれ規制突部63を後方に延長して横梁17に前方から対向する構造をなしている。
[Second Embodiment]
The carriage 10V of the second embodiment of the present invention is shown in FIG. 20, and the structure of the deviation control protrusion 63V provided on the pedestal 40V is different from that of the first embodiment. The deviation regulation protrusion 63V has a structure in which the deviation regulation protrusion 63 of the first embodiment is extended rearward and faces the cross beam 17 from the front.

具体的には、本実施形態のずれ規制突部63Vは、図10に示された第1実施形態のずれ規制突部63のうち内外の側壁63E,63Dを横梁17に突き合わされる位置まで延長した構造をなしている(図20には、内側の側壁63Eのみが示されている)。また、それら延長された1対の側壁63E,63Dの間には、第1実施形態のずれ規制突部63の後壁63Bより後側に、その後壁63Bと同じく前側格子リブ45の横リブの一部を下方に延長してなる新たな後壁63Fが形成されている。即ち、ずれ規制突部63Vは、1対の側壁63E,63Dから延長された1対のずれ規制突壁63Gが後壁63Fから後方に張り出した構造をなしている。 Specifically, the deviation regulation protrusion 63V of the present embodiment extends the inner and outer side walls 63E and 63D of the deviation regulation protrusion 63 of the first embodiment shown in FIG. 10 to a position where they are abutted against the cross beam 17. (In FIG. 20, only the inner side wall 63E is shown). Further, between the pair of extended side walls 63E and 63D, the lateral ribs of the front grid rib 45, which is the same as the rear wall 63B, are located behind the rear wall 63B of the deviation control protrusion 63 of the first embodiment. A new rear wall 63F is formed, which is partially extended downward. That is, the deviation control protrusion 63V has a structure in which a pair of deviation regulation protrusions 63G extended from the pair of side walls 63E and 63D project rearward from the rear wall 63F.

また、1対のずれ規制突壁63Gを含むずれ規制突部63V全体の下面は、図20(A)に示すように後ろ下がりに傾斜している。そして、台盤40Vを傾斜姿勢にしたときに、ずれ規制突部63Vの下面が横梁17の下面の近傍でその横梁17の下面と平行になる。また、1対のずれ規制突壁63Gの後端面は、台盤40Vの回動中心を中心に湾曲する円弧面63Hになっていて、台盤40Vの傾斜角度に拘わらず横梁17に隣接するようになっている。さらに、支持フレーム13Vの前端面には、例えば、弾性部材からなる当接ブロック90が螺子止めされていて、台盤40Vが傾斜姿勢になっても当接ブロック90の前面が台盤40Vの先端より前方に位置するようになっている。本実施形態の台車10Vのその他の構造に関しては、前記第1実施形態の台車10と同じになっている。 Further, the lower surface of the entire deviation regulation protrusion 63V including the pair of deviation regulation protrusions 63G is inclined backward as shown in FIG. 20 (A). Then, when the base plate 40V is in an inclined posture, the lower surface of the displacement regulating protrusion 63V becomes parallel to the lower surface of the cross beam 17 in the vicinity of the lower surface of the cross beam 17. Further, the rear end surface of the pair of slip-regulating protrusions 63G is an arc surface 63H that curves around the rotation center of the base plate 40V so as to be adjacent to the cross beam 17 regardless of the inclination angle of the base plate 40V. It has become. Further, for example, a contact block 90 made of an elastic member is screwed to the front end surface of the support frame 13V, and even if the base 40V is in an inclined posture, the front surface of the contact block 90 is the tip of the base 40V. It is designed to be located further forward. Other structures of the dolly 10V of the present embodiment are the same as those of the dolly 10 of the first embodiment.

本実施形態の台車10Vによれば、台盤40Vが障害物に衝突した場合の負荷Fのうち横向成分Fxの負荷をずれ規制突部63Vと縦梁18との当接によって受け止めることができ、縦向成分Fyをずれ規制突部63Vのずれ規制突壁63Gと横梁17との当接によって受け止めることができる。また、台盤40Vを傾斜姿勢にした場合も同様である。さらに、台盤40Vを傾斜姿勢にしても支持フレーム13Vの当接ブロック90の前面が台盤40Vより前方に位置するのでヒンジ22を厚く保護することができる。なお、本実施形態では、横梁17は、本発明に係る「ずれ規制部」に相当する。 According to the bogie 10V of the present embodiment, the load of the lateral component Fx in the load F when the base 40V collides with an obstacle can be received by the contact between the shift regulation protrusion 63V and the vertical beam 18. The vertical component Fy can be received by the contact between the deviation regulation protrusion 63G of the deviation regulation protrusion 63V and the cross beam 17. The same applies when the base plate 40V is in an inclined posture. Further, even if the base 40V is tilted, the front surface of the contact block 90 of the support frame 13V is located in front of the base 40V, so that the hinge 22 can be thickly protected. In the present embodiment, the cross beam 17 corresponds to the "deviation control unit" according to the present invention.

なお、本実施形態では、台盤40Vが前方から負荷を受けたときに、ヒンジ22におけるヒンジピン27と、そのヒンジピン27が貫通する固定筒体24及び筒部26(図3(A)参照)との間のクリアランスの範囲で、ずれ規制突部63Vが横梁17に接近して当接する構成とすることで、ヒンジ22の負荷を確実に抑えることが可能になる。 In this embodiment, when the base 40V receives a load from the front, the hinge pin 27 in the hinge 22 and the fixed cylinder 24 and the cylinder portion 26 through which the hinge pin 27 penetrates (see FIG. 3A). The load on the hinge 22 can be reliably suppressed by configuring the displacement control protrusion 63V to approach and contact the cross beam 17 within the range of the clearance between the two.

[第3実施形態]
本発明の第3実施形態の台車10Wは、図21に示されており、支持フレーム13Wから突出した1対の第2ずれ規制突部93(図21には、一方の第2ずれ規制突部93のみが示されている)を有し、台盤40Wの下面に備えた係合凹部40Uに凹凸係合する点が第1実施形態と異なる。
[Third Embodiment]
The carriage 10W of the third embodiment of the present invention is shown in FIG. 21, and a pair of second deviation regulating protrusions 93 protruding from the support frame 13W (in FIG. 21, one of the second deviation regulating protrusions 93). It is different from the first embodiment in that it has (only 93 is shown) and is unevenly engaged with the engaging recess 40U provided on the lower surface of the base 40W.

具体的には、第2ずれ規制突部93は、横梁17の上面のうちずれ規制突部63,63(以下、「第1ずれ規制突部63」という)の真後ろとなる位置に配置されている。また、第2ずれ規制突部93は、基端部に均一外径の円柱部91を有し、その円柱部91より上側が円柱部91から上方に向かって縮径したテーパー部92になっている。一方、係合凹部40Uは、断面円形をなしていて、その内径は、円柱部91が丁度嵌合する大きさになっている。本実施形態の台車10Wのその他の構造に関しては、前記第1実施形態の台車10と同じになっている。 Specifically, the second deviation regulation protrusion 93 is arranged at a position directly behind the deviation regulation protrusions 63, 63 (hereinafter, referred to as "first deviation regulation protrusion 63") on the upper surface of the cross beam 17. There is. Further, the second deviation regulating protrusion 93 has a cylindrical portion 91 having a uniform outer diameter at the base end portion, and the upper side of the cylindrical portion 91 is a tapered portion 92 whose diameter is reduced upward from the cylindrical portion 91. There is. On the other hand, the engaging recess 40U has a circular cross section, and the inner diameter thereof is such that the columnar portion 91 just fits. Other structures of the dolly 10W of the present embodiment are the same as those of the dolly 10 of the first embodiment.

本実施形態の台車10Wによれば、図21(B)に示すように、台盤40Wが傾斜姿勢となった状態では、第1実施形態の台車10と同様に、第1ずれ規制突部63と縦梁18との当接によってヒンジ22を保護することができる。その台盤40Wを水平姿勢にすると、図21(A)に示すように、第2ずれ規制突部93がテーパー部92をガイドにして台盤40Wの係合凹部40Uに突入し、第2ずれ規制突部93の円柱部91が係合凹部40Uの内側面と平行になって開口する。これにより、台車10Wが障害物に衝突した場合にその水平な全方向の負荷を第2ずれ規制突部93と係合凹部40Uの内側面との当接によって受け止めることができる。即ち、第1ずれ規制突部63と縦梁18との当接と第2ずれ規制突部93と係合凹部40Uの内側面との当接の協働によってヒンジ22を衝撃から保護することができる。 According to the dolly 10W of the present embodiment, as shown in FIG. 21B, when the dolly 40W is in an inclined posture, the first deviation regulation protrusion 63 is similar to the dolly 10 of the first embodiment. The hinge 22 can be protected by the contact between the vertical beam 18 and the vertical beam 18. When the pedestal 40W is placed in a horizontal position, as shown in FIG. 21 (A), the second deviation regulating protrusion 93 rushes into the engaging recess 40U of the pedestal 40W using the tapered portion 92 as a guide, and the second deviation is caused. The columnar portion 91 of the regulation protrusion 93 opens parallel to the inner surface of the engaging recess 40U. As a result, when the bogie 10W collides with an obstacle, the horizontal load in all directions can be received by the contact between the second deviation regulating protrusion 93 and the inner surface of the engaging recess 40U. That is, the hinge 22 can be protected from impact by the cooperation of the contact between the first deviation regulating protrusion 63 and the vertical beam 18 and the contact between the second deviation regulating protrusion 93 and the inner surface of the engaging recess 40U. it can.

[他の実施形態]
本発明は、前記実施形態に限定されるものではなく、例えば、以下に説明するような実施形態も本発明の技術的範囲に含まれ、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。
[Other Embodiments]
The present invention is not limited to the above-described embodiment, and for example, embodiments as described below are also included in the technical scope of the present invention, and various other than the following, as long as the gist is not deviated. It can be changed and implemented.

(1)前記第1実施形態の台車10では、台盤40が傾斜姿勢になってもずれ規制突部63と支持フレーム13の縦梁18とが水平方向で互いに対向した状態が維持される構成になっていたが、台盤40が水平姿勢である場合にのみずれ規制突部63と支持フレーム13の縦梁18とが対向する構成としてもよい。 (1) In the trolley 10 of the first embodiment, even if the pedestal 40 is in an inclined posture, the displacement regulating protrusion 63 and the vertical beam 18 of the support frame 13 are maintained in a state of facing each other in the horizontal direction. However, the misalignment control protrusion 63 and the vertical beam 18 of the support frame 13 may face each other only when the base 40 is in the horizontal posture.

(2)前記第1実施形態では、上ガイド面51A及び下ガイド面52Aが、台盤40の上面に対して傾斜した平坦面になっていがた、前記上ガイド面51A及び下ガイド面52Aを、台盤40の上面に対して傾斜した湾曲面としてもよい。 (2) In the first embodiment, the upper guide surface 51A and the lower guide surface 52A are flat surfaces inclined with respect to the upper surface of the base plate 40. , A curved surface inclined with respect to the upper surface of the base 40 may be used.

10,10V,10W 台車
11 キャスター
13,13V,13W 支持フレーム
17 横梁(ずれ規制部)
18 縦梁(ずれ規制部)
22 ヒンジ
40,40V,40W 台盤
40E 傾動許容空間
40U 係合凹部
44F 下面係合突部
45 前側格子リブ
63,63V ずれ規制突部
93 第2ずれ規制突部
F 負荷
10,10V, 10W trolley 11 Caster 13,13V, 13W Support frame 17 Cross beam (displacement regulation part)
18 Vertical beam (deviation regulation part)
22 Hinge 40, 40V, 40W Base 40E Tilt allowable space 40U Engagement recess 44F Bottom engagement protrusion 45 Front lattice rib 63, 63V Displacement regulation protrusion 93 Second deviation regulation protrusion F Load

Claims (5)

台盤を下方から支持しかつ下面にキャスターを有する支持フレームを備え、その支持フレームの平面形状が後方に向かって徐々に拡開する門形構造をなすと共に、前記台盤が前記支持フレームの前端部にヒンジにて連結され、前記台盤を傾斜姿勢にして前記支持フレームの内側に他の台車の前記支持フレームを受容可能な台車において、
前記台盤及び前記支持フレームの前記ヒンジ寄り位置にそれぞれ設けられて水平方向で互いに対向し、前記支持フレームに対する前記台盤の水平方向の位置ずれを規制するずれ規制部を備え
前記台盤を水平姿勢から前記傾斜姿勢に変更しても、前記台盤の前記ずれ規制部と前記支持フレームの前記ずれ規制部とが水平方向で互いに対向した状態が維持される台車。
A support frame that supports the pedestal from below and has casters on the lower surface is provided, and the planar shape of the support frame forms a portal structure that gradually expands rearward, and the pedestal forms a front end of the support frame. In a trolley that is connected to a portion by a hinge and can receive the support frame of another trolley inside the support frame with the pedestal in an inclined posture.
A displacement regulating unit is provided at a position near the hinge of the pedestal and the support frame, which faces each other in the horizontal direction and regulates the horizontal displacement of the pedestal with respect to the support frame .
A dolly that maintains a state in which the deviation regulating portion of the pedestal and the displacement regulating portion of the support frame face each other in the horizontal direction even when the pedestal is changed from the horizontal posture to the inclined posture .
前記台盤を前記傾斜姿勢に保持する保持部材を備える請求項1に記載の台車。 The trolley according to claim 1, further comprising a holding member that holds the pedestal in the inclined posture . 前記支持フレームの前記ずれ規制部として、前記支持フレームの前端部における横方向の中間部で前後方向に延びる縦梁が設けられ、
前記台盤の前記ずれ規制部として、前記台盤全体から下方に突出し、前記縦梁を挟んで対向する1対のずれ規制突部が設けられている請求項1又は2に記載の台車。
As the displacement restricting portion of the support frame, a vertical beam extending in the front-rear direction is provided at an intermediate portion in the lateral direction at the front end portion of the support frame.
The trolley according to claim 1 or 2 , wherein as the displacement regulating portion of the pedestal , a pair of displacement regulating protrusions that project downward from the entire pedestal and face each other across the vertical beam are provided .
前記ヒンジは、前記支持フレームの前端面より後方に配置されると共に、
前記台盤の下面のうち前記ヒンジより前側部分を後側部分より上方にずらして、前記台盤と前記支持フレームとの間に前記台盤の傾動を許容する傾動許容空間を備えた請求項1乃至3の何れか1の請求項に記載の台車。
The hinge is arranged behind the front end surface of the support frame, and the hinge is arranged.
1. A claim 1 in which a portion of the lower surface of the base plate on the front side of the hinge is shifted upward from the rear side portion, and a tilting allowance space for allowing the base plate to tilt is provided between the base plate and the support frame. The trolley according to claim 1 of any one of 3 to 3.
前記台盤の前端面が、前記支持フレームの前端面に対して後方又は面一に配置されている請求項4に記載の台車。 The carriage according to claim 4, wherein the front end surface of the pedestal is arranged rearward or flush with respect to the front end surface of the support frame.
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