JP2006347479A - Heavy load conveying wheel unit - Google Patents

Heavy load conveying wheel unit Download PDF

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JP2006347479A
JP2006347479A JP2005178982A JP2005178982A JP2006347479A JP 2006347479 A JP2006347479 A JP 2006347479A JP 2005178982 A JP2005178982 A JP 2005178982A JP 2005178982 A JP2005178982 A JP 2005178982A JP 2006347479 A JP2006347479 A JP 2006347479A
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axle
wheel unit
frame
auxiliary wheels
wheels
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Seizo Ito
清三 伊藤
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a heavy load conveying wheel unit capable of eliminating any front and rear plays in the traveling direction, enhancing the appearance of the entire wheel unit, and reducing the resistance caused by the contact friction of auxiliary wheels with a floor surface during the turn. <P>SOLUTION: A pair of front and rear auxiliary wheels 5, 6 in the traveling direction are rotatably supported by an axle 33 on a lower side of a frame F with a unit base 3 being supported by an upper side rotatably in a horizontal plane. A pair of right and left wheels 9, 10 for a heavy load have a connection member which is rotatably and pivotably supported by axles 7, 8 independent from each other at a center of the lower side of the frame F, and connected/disconnected by an operation means between clutch members provided on the axles 7, 8. A repulsive support means 30 is provided on a part of the axle 33 of the auxiliary wheels 5, 6 so as to urge the auxiliary wheels 5, 6 against the floor surface side so that a heavy load conveying wheel unit consistently travels without any front and rear play while a vehicle travels straight or makes a turn. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、例えば大型変圧器、大型工作機械、冷暖房機器等の重量物の運搬時においてガタ付くことのない安定した運搬方向の転換容易性および直進進行性が得られるようにした重量物運搬用車輪ユニットに関するものである。   The present invention is for transporting heavy objects such that stable transport direction changeability and straight advanceability are obtained without rattling when transporting heavy objects such as large transformers, large machine tools, and air conditioning equipment. It relates to the wheel unit.

従来、この種の車輪ユニットとしては、本出願人自身によって出願・特許された特許文献1がある。すなわち、この車輪ユニットは、上面にユニットベースを回転自在に支承したフレームと、フレームの下面に走行方向前後位置の左右それぞれで回転自在に支承され、外周に例えば硬度HSA95等の硬質ウレタンゴムを装着した左右一対の補助車輪と、フレームの中央下面にあって走行方向と直交する同一軸線上にそれぞれ独立して回転可能に軸支した2本の車軸と、これら2本の車軸にキーを介して挿嵌され、外周に例えば硬度HSA85等の硬質ウレタンゴムを装着した重量用車輪と、両重量用車輪の近接対向する車軸の軸端にそれぞれ装着されたクラッチ部材と、両クラッチ部材間を移動して両クラッチ部材の連結、離脱を行なう連結部材と、連結部材の外周に形成されたリング溝に係止し、フレームの外部側面からの操作で連結部材を左右に移動可能とするよう、フレームに支持された操作手段とから構成されている。
特許第3471299号公報
Conventionally, as this type of wheel unit, there is Patent Document 1 filed and patented by the present applicant. That is, this wheel unit is supported on the upper surface of the unit base so that the unit base can rotate freely and on the lower surface of the frame so that it can rotate freely on the left and right sides of the running direction. A pair of left and right auxiliary wheels, two axles rotatably supported on the same axis line perpendicular to the traveling direction on the lower center surface of the frame, and a key on these two axles A weight wheel fitted with a hard urethane rubber of hardness HSA85 or the like on the outer periphery, a clutch member mounted on the axle end of the axle opposite to both the weight wheels, and a movement between both clutch members. The coupling member that engages and disengages both clutch members and the ring groove formed on the outer periphery of the coupling member, and the coupling part is operated from the outer side of the frame. To a movable right and left, and a manipulation means which is supported by the frame.
Japanese Patent No. 3471299

しかしながら、この従来の車輪ユニットにおいては、床面に接触している重量用車輪に対し、補助車輪の方は床面との間に隙間が生じるため、重量物運搬中に車輪ユニット自体が走行方向の前後部が上下に移動して、例えばバタンバタンとガタ付いてしまう虞れがある。しかも、車輪ユニット全体の見た目もあまり良くない。また、車輪ユニットを旋回させようとするときには、補助車輪がフレームの四隅に配置されているため、床面との接触摩擦による抵抗が非常に大きくなる虞れもある。   However, in this conventional wheel unit, there is a gap between the auxiliary wheel and the floor surface with respect to the weight wheel that is in contact with the floor surface. There is a risk that the front and rear parts of the slidable movement will move up and down, for example, and rattling. Moreover, the overall appearance of the wheel unit is not very good. Further, when trying to turn the wheel unit, the auxiliary wheels are arranged at the four corners of the frame, so that the resistance due to the contact friction with the floor surface may become very large.

そこで、本発明は叙上のような従来存した諸事情に鑑み創出されたもので、走行方向に向けて前後における上下のガタ付きを無くし、且つ車輪ユニット全体の見た目を良くすると共に、旋回に際し、補助車輪の床面との接触摩擦による抵抗を少なくできるように改良した重量物運搬用車輪ユニットを提供することを目的とする。   Therefore, the present invention has been created in view of the conventional circumstances as described above, eliminates back and forth rattling in the front and rear in the running direction, improves the overall appearance of the wheel unit, and makes a turn. Another object of the present invention is to provide an improved heavy-duty wheel unit that can reduce resistance caused by contact friction with the floor surface of an auxiliary wheel.

上述した課題を解決するため、本発明にあっては、上面にユニットベース3を回転可能に支承し、下面に走行方向の前後で一対となる補助車輪5,6を車軸33により回転自在に支承したフレームFと、該フレームFの下面で、互いに独立した車軸7,8によって回転可能に軸支され、該両車軸7,8の軸端それぞれに備え付けられたクラッチ部材11a,11b間を操作手段13によって移動可能とすることにより連結離脱を行なう連結部材12を備えた左右一対の重量用車輪9,10とを有する重量物運搬用車輪ユニットであって、補助車輪5,6を床面側へ付勢させるよう当該補助車輪5、6の車軸33部位にサポート手段30を備えたものである。
サポート手段30は、車軸33部位に向けて垂下突設され、上下方向に沿って貫通孔35を穿設し、且つ左右側面には車軸33を通して上下方向にスライド可能にするスライド用長孔36を穿設して成るベースブロック37と、貫通孔35に昇降自在に内挿され、スライド用長孔36に対向して側面に車軸33を貫挿させる挿入用円孔38を有し、上端がフレームFの下面によって係止されているコイル状のスプリング39の下端が当接されることで常時下方向へ向けて付勢されて成る円柱状のスライドブロック40とから構成されているものとできる。
In order to solve the above-described problems, in the present invention, the unit base 3 is rotatably supported on the upper surface, and a pair of auxiliary wheels 5 and 6 are supported on the lower surface by the axle 33 so as to be rotatable in front and rear in the traveling direction. Operating means between the clutch members 11a and 11b that are rotatably supported by the frame F and the lower surface of the frame F by the axles 7 and 8 independent of each other and provided at the shaft ends of the axles 7 and 8, respectively. 13 is a heavy-duty carrying wheel unit having a pair of left and right weight wheels 9 and 10 each having a connecting member 12 that is connected and disengaged by making it movable by means of 13, and the auxiliary wheels 5 and 6 are moved to the floor surface side. A support means 30 is provided at the axle 33 portion of the auxiliary wheels 5 and 6 so as to be biased.
The support means 30 is provided so as to hang down toward the axle 33, has a through hole 35 along the vertical direction, and has a long slot 36 for sliding on the left and right sides through the axle 33 so as to be slidable in the vertical direction. A base block 37 formed by drilling is inserted into the through-hole 35 so as to be movable up and down, and has an insertion circular hole 38 through which the axle 33 is inserted in a side surface facing the long slot 36 for sliding. The lower end of the coil-shaped spring 39 locked by the lower surface of F can be configured to include a columnar slide block 40 that is always urged downward by abutment.

以上のように構成された本発明に係る重量物運搬用車輪ユニットにあって、車輪ユニット本体1の前後一対の補助車輪5,6に設けられているサポート手段30は、ベースブロック37内のスライドブロック40をスプリング39の弾発力によって車軸33と共にスライド用長孔36に沿って下方側へ付勢させ、車軸33をベースブロック37のスライド用長孔36の下縁部に係止させる。これにより補助車輪5,6は床面側へ常に圧接させられている状態となり、移動中における車輪ユニット本体1自体の重量用車輪9,10を介しての前後方向へのガタ付きを吸収させる。   In the heavy goods carrying wheel unit according to the present invention configured as described above, the support means 30 provided on the pair of front and rear auxiliary wheels 5 and 6 of the wheel unit main body 1 is a slide in the base block 37. The block 40 is urged downward along the slide long hole 36 together with the axle 33 by the elastic force of the spring 39, and the axle 33 is locked to the lower edge portion of the slide long hole 36 of the base block 37. As a result, the auxiliary wheels 5 and 6 are always in pressure contact with the floor surface, and the backlash in the front-rear direction through the weight wheels 9 and 10 of the wheel unit body 1 itself during movement is absorbed.

本発明によれば、走行方向に向けて前後のガタ付きを無くすことができ、且つ車輪ユニット全体の見た目が良くなり、また、旋回に際し、補助車輪5,6の床面との接触摩擦による抵抗を少なくすることができる。   According to the present invention, it is possible to eliminate back and forth rattling in the running direction, the appearance of the entire wheel unit is improved, and resistance due to contact friction with the floor surface of the auxiliary wheels 5 and 6 during turning. Can be reduced.

すなわちこれは本発明が、補助車輪5,6を床面側へ付勢させるよう当該補助車輪5、6の車軸33部位にサポート手段30を備えたからであり、補助車輪5,6が床面に常時接地するため、走行方向に向けての前後のガタ付きを確実に吸収することができる。   That is, this is because the present invention includes the support means 30 at the axle 33 portion of the auxiliary wheels 5 and 6 so as to bias the auxiliary wheels 5 and 6 toward the floor surface. Since it is always grounded, it is possible to reliably absorb back and forth play in the running direction.

また、補助車輪5,6を、フレームF下面に走行方向の前後で一対となるように配したので、車輪ユニット本体1の旋回に際し、補助車輪5,6の床面との接触摩擦による抵抗を極力少なくすることができ、しかも車輪ユニット全体の見た目も良くなる。   In addition, since the auxiliary wheels 5 and 6 are arranged on the lower surface of the frame F so as to form a pair before and after in the traveling direction, when the wheel unit body 1 turns, resistance due to contact friction with the floor surface of the auxiliary wheels 5 and 6 is reduced. It can be reduced as much as possible, and the appearance of the entire wheel unit is also improved.

サポート手段30は、車軸33部位に向けて垂下突設され、上下方向に沿って貫通孔35を穿設し、且つ左右側面には車軸33を通して上下方向にスライド可能にするスライド用長孔36を穿設して成るベースブロック37と、貫通孔35に昇降自在に内挿され、スライド用長孔36に対向して側面に車軸33を貫挿させる挿入用円孔38を有し、上端がフレームFの下面によって係止されているスプリング39の下端が当接されることで常時下方向へ向けて付勢されて成るスライドブロック40とから構成されているので、低コストで且つ簡易構造によるものとでき容易に作製することができる。   The support means 30 is provided so as to hang down toward the axle 33, has a through hole 35 along the vertical direction, and has a long slot 36 for sliding on the left and right sides through the axle 33 so as to be slidable in the vertical direction. A base block 37 formed by drilling is inserted into the through-hole 35 so as to be movable up and down, and has an insertion circular hole 38 through which the axle 33 is inserted in a side surface facing the long slot 36 for sliding. Since the lower end of the spring 39 locked by the lower surface of F is in contact with the slide block 40 that is constantly urged downward, the cost is low and the structure is simple. And can be easily manufactured.

尚、上記の課題を解決するための手段、発明の効果の項夫々において付記した符号は、図面中に記載した構成各部を示す部分との参照を容易にするために付したもので、図面中の符号によって示された構造・形状に本発明が限定されるものではない。   Note that the reference numerals added in the means for solving the above-described problems and the effects of the invention are given for easy reference to the parts showing the components shown in the drawings. The present invention is not limited to the structure / shape indicated by the reference numeral.

以下図面を参照して本発明を実施するための最良の一形態を説明すると、図において示される符号1は、大型変圧器、大型工作機械等の運搬物Qを運搬するための重量物運搬用の車輪ユニット本体であり、図1に示すように、各種の運搬物Qを載置した台車台部R底面の例えば走行方向における後方の両側に支持台、該支持台相互を連結する連結バー等を介して、運搬物Qを載置するように配置されるものである。また、前方の両側にはキャスターユニットP1が配置され、さらにそれらの中央にはユニバーサル電動ユニットP2が配置固定されて当該運搬物Qを運搬する。この車輪ユニット本体1は、図1に示すように、台車台部Rの下面に固定されるよう、あるいは台車台部Rを介して運搬物Qを支持するようその下面に配置されるものとした円板状のユニットベース10を水平面で回転可能に連携・支承している。   The best mode for carrying out the present invention will be described below with reference to the drawings. Reference numeral 1 shown in the figure denotes a heavy object for conveying a conveyed item Q such as a large transformer or a large machine tool. As shown in FIG. 1, for example, a support base on both sides of the rear side of the carriage base R on which the various transported articles Q are placed in the traveling direction, a connecting bar for connecting the support bases, and the like. It arrange | positions so that the conveyed product Q may be mounted via. In addition, caster units P1 are disposed on both sides of the front, and a universal electric unit P2 is disposed and fixed at the center of the caster units P1 to transport the transported article Q. As shown in FIG. 1, the wheel unit main body 1 is arranged on the lower surface so as to be fixed to the lower surface of the cart base R or to support the transported goods Q via the cart base R. The disk-shaped unit base 10 is linked and supported so as to be rotatable on a horizontal plane.

車輪ユニット本体1は、図2乃至図5に示すように、平面形状が略正八角形状のフレームFの中央で立設してある柱部で支持した支持面2上に、ターンテーブルとなるユニットベース3をその中心に配した支持体4を介して回転可能に連結支持していると共に、フレームFの下面で走行方向前後に相対峙して固定してある左右側部相互間に配した後述の車軸33によって回転自在に支承され、外周に例えば硬度HSA95等の硬質ウレタンゴムを装着した補助車輪5,6を、後述する両重量用車輪9,10の車軸7,8に対して前後の対称な位置に備えている。すなわち、前後一対の補助車輪5,6それぞれを支承している車軸33相互の中間に、両重量用車輪9,10の車軸7,8がフレームF下面の左右縁に設けた左右主側部相互間で支承され、それぞれがほぼ並行するように配されている。   As shown in FIGS. 2 to 5, the wheel unit main body 1 is a unit that serves as a turntable on a support surface 2 that is supported by a pillar portion that is erected at the center of a frame F having a substantially regular octagonal plane shape. The base 3 is connected and supported rotatably via a support 4 disposed at the center thereof, and is disposed between the left and right side portions fixed on the lower surface of the frame F so as to be opposed to each other in the traveling direction. Auxiliary wheels 5 and 6 that are rotatably supported by an axle 33 and have a hard urethane rubber such as a hardness HSA95 mounted on the outer periphery are symmetrical with respect to the axles 7 and 8 of both weight wheels 9 and 10 to be described later. It is prepared for the right position. That is, the left and right main side portions provided on the left and right edges of the lower surface of the frame F are provided between the axles 33 supporting the pair of front and rear auxiliary wheels 5 and 6 and the axles 7 and 8 of the weight wheels 9 and 10 are provided on the left and right edges of the frame F. They are supported by each other and are arranged in parallel.

尚、フレームFは平面で略正八角形状の天板部と、この天板部下面で前後に相対峙状に配した前後主側部と、天板部下面の左右縁で左右に相対峙状にして前後主側部相互間で連結した左右主側部と、天板部下面で前後主側部それぞれの前方に位置して、相互が連結板にて連結された状態で前後主側部の前後面の端面が当接していると共に左右に相対峙状に配された左右側部とで、下方開放の井桁ボックス状に構成されている。   The frame F has a substantially regular octagonal top plate portion, a front and rear main side portion arranged in a front and rear relative to the bottom surface of the top plate portion, and a left and right edge on the bottom surface of the top plate portion. The left and right main sides connected between the front and rear main sides and the front and rear main sides on the lower surface of the top plate, and the front and rear main sides in a state of being connected to each other by the connecting plate The front and rear end faces are in contact with each other, and the left and right side portions arranged in the shape of a relative saddle on the left and right form a downwardly-opened cross-girder box shape.

また、車輪ユニット本体1には、具体的には、フレームFの中央下面にあって走行方向と直交する同一軸線上にそれぞれ独立して回転可能に軸支した2本の前記車軸7,8と、これら2本の車軸7,8にキーKを介して挿嵌され、外周に例えば硬度HSA85等の硬質ウレタンゴムを装着した前記重量用車輪9,10と、両重量用車輪9,10の近接対向する車軸7,8の軸端にそれぞれ装着されたクラッチ部材11a,11bと、両クラッチ部材11a,11b間を移動して当該両クラッチ部材11a,11bの連結、離脱を行なう連結部材12と、連結部材12の外周に形成されたリング溝Gに係止し、フレームFの外部側面からの操作で連結部材12を左右に移動可能とするよう、フレームF下面の前記左右主側部に支持された操作手段13とが組み込まれている。尚、連結部材12の内周には内歯が、車軸7,8軸端のクラッチ部材11a,11bの外周には外歯が形成されていて、連結部材12はこれの移動によってクラッチ部材11A,11Bのいずれか一方に、あるいは両方に噛み合うようになっている。   The wheel unit body 1 includes two axles 7 and 8 that are pivotally supported on the same lower surface on the lower surface of the center of the frame F so as to be independently rotatable. The weight wheels 9 and 10 which are fitted on these two axles 7 and 8 via a key K and are mounted with a hard urethane rubber such as a hardness HSA85 on the outer periphery, and the proximity of both weight wheels 9 and 10 Clutch members 11a and 11b mounted on the shaft ends of the opposing axles 7 and 8, respectively, and a connecting member 12 that moves between the clutch members 11a and 11b to connect and disconnect the clutch members 11a and 11b; Locked in a ring groove G formed on the outer periphery of the connecting member 12 and supported by the left and right main side portions on the lower surface of the frame F so that the connecting member 12 can be moved left and right by an operation from the outer side surface of the frame F. Operating hand 13 and have been incorporated. Inner teeth are formed on the inner periphery of the connecting member 12, and outer teeth are formed on the outer periphery of the clutch members 11a and 11b at the ends of the axles 7 and 8. The connecting member 12 is moved by the clutch member 11A, It meshes with either or both of 11B.

操作手段13は、図3、図4に示すように、両車軸7,8の軸線と平行に回転自在にフレームFの左右主側部に軸支されると共にフレームFの中央側に位置する片側の所定部位にはネジ溝14が刻設され、フレームF両側から外部に突出した突出部に装着された操作ハンドルHにより回転操作する操作軸15と、この操作軸15の近接位置に並設され、一方の軸端が同一軸線上でフレームFの支軸に掛止された圧縮バネ17によって押圧付勢される作用軸16と、この作用軸16の中間部位に支着され、連結部材12と係合すべく薄肉状に形成されたシフターアーム18aを有するシフター18と、コイル状の圧縮バネ17により押圧付勢されることで作用軸16の他方端部に当接すべく操作軸15のネジ溝14にネジ合わされた押圧体19とから構成されている。   As shown in FIGS. 3 and 4, the operating means 13 is pivotally supported on the left and right main side portions of the frame F so as to be rotatable in parallel with the axes of the two axles 7 and 8, and is located on one side of the frame F. A thread groove 14 is formed in a predetermined portion of the control shaft 15 and is arranged in parallel with an operation shaft 15 that is rotated by an operation handle H attached to a protruding portion that protrudes outward from both sides of the frame F, and a position close to the operation shaft 15. One end of the shaft is pressed and urged by a compression spring 17 that is hooked to the support shaft of the frame F on the same axis, and is attached to an intermediate portion of the operation shaft 16 and is engaged with the connecting member 12. A shifter 18 having a shifter arm 18a formed to be thin to be matched, and a thread groove of the operating shaft 15 to be brought into contact with the other end of the operating shaft 16 by being pressed and urged by a coiled compression spring 17 The pressing body 19 screwed to 14 It is constructed from.

押圧体19は、角形のブロックで形成され、このブロックの作用軸16側に開口する所定幅の長溝20が当該作用軸16と平行に形成され、長溝20の長手方向端部には当接面20aが形成されている。また、作用軸16のシフター18が支着される部位にはネジ溝16aが刻設され、ネジ溝16aの端部である圧縮バネ17が配置される側には所定厚みのフランジ16bが形成されている。   The pressing body 19 is formed of a square block, and a long groove 20 having a predetermined width that opens to the side of the working shaft 16 of the block is formed in parallel to the working shaft 16. 20a is formed. Further, a thread groove 16a is formed in a portion of the working shaft 16 where the shifter 18 is attached, and a flange 16b having a predetermined thickness is formed on the side where the compression spring 17 as an end of the thread groove 16a is disposed. Yes.

ユニットベース3は、図5に示すように、支持面2中央に形成したピボット軸受21を介して支承した回転軸22、支持面2の円周縁面に沿って配列したボールベアリング23等によって支持面2上で回転自在に支承してある。   As shown in FIG. 5, the unit base 3 is supported by a rotary shaft 22 supported via a pivot bearing 21 formed at the center of the support surface 2, a ball bearing 23 arranged along the circumferential edge of the support surface 2, and the like. 2 is rotatably supported.

前後の補助車輪5または6は、図6、図7に示すように、フレームFの下面の前後部に垂下突設した左右一対の前記左右側部、連結板から成る車輪支持部31,32において、当該車輪支持部31,32の左右側部間に貫通形成された支持孔に嵌挿されることによって横架配置された車軸33に、当該補助車輪5,6の回転中心内部に固着された左右一対のボールベアリング34a,34bを介して回転自在に支承されている。そして、左右側部と補助車輪5,6との間は所定の空隙幅員で離隔されており、中心の補助車輪5、6と左右との間に露出している車軸33部位には、当該補助車輪5,6を床面側へ圧接させるため、サポート手段30が設けられている。該サポート手段30は、フレームFの下面の前後の補助車輪5,6のそれぞれを独立して床面側に安定して圧接させるよう、補助車輪5,6の左右に配設してある。   As shown in FIGS. 6 and 7, the front and rear auxiliary wheels 5 or 6 are respectively provided at wheel support portions 31 and 32 composed of a pair of left and right side portions projecting from the front and rear portions of the lower surface of the frame F and connecting plates. The left and right sides fixed to the inside of the center of rotation of the auxiliary wheels 5 and 6 on the axle 33 that is horizontally placed by being inserted into a support hole formed between the left and right side portions of the wheel support portions 31 and 32. It is rotatably supported through a pair of ball bearings 34a and 34b. The left and right side portions and the auxiliary wheels 5 and 6 are separated by a predetermined gap width, and the axle 33 portion exposed between the central auxiliary wheels 5 and 6 and the left and right is provided with the auxiliary wheel. Support means 30 are provided to press the wheels 5 and 6 against the floor surface. The support means 30 is disposed on the left and right sides of the auxiliary wheels 5 and 6 so that the front and rear auxiliary wheels 5 and 6 on the lower surface of the frame F are independently and stably pressed against the floor surface.

すなわち、このサポート手段30は、中心の補助車輪5,6と左右側部との間に露出している車軸33部位に向けて垂下突設され、上下方向に沿って円柱開口状の貫通孔35を穿設し、且つ左右側面には車軸33を通して上下方向にスライド可能にするためのスライド用長孔36を縦方向に沿って穿設して成る角形のベースブロック37と、貫通孔35に昇降自在に内挿され、ベースブロック37のスライド用長孔36に対向して側面には車軸33を貫挿させるための挿入用円孔38を有し、上端がフレームFの天板部の下面によって係止されているコイル状のスプリング39の下端が当接されることで常時下方向へ向けて付勢されて成る円柱状のスライドブロック40とから構成されている(図8参照)。   That is, the support means 30 is provided so as to hang down from the center auxiliary wheels 5 and 6 and the left and right side portions, and is projected downwardly, and has a cylindrical opening in the vertical direction. And a rectangular base block 37 in which a long slot 36 for sliding in the vertical direction is formed on the left and right sides so as to be slidable in the vertical direction through the axle 33, and the through hole 35 is moved up and down. The base block 37 has an insertion circular hole 38 through which the axle 33 is inserted so as to face the sliding long hole 36 of the base block 37, and the upper end is formed by the lower surface of the top plate portion of the frame F. It is composed of a cylindrical slide block 40 that is constantly biased downward by abutting the lower end of the coiled spring 39 that is locked (see FIG. 8).

こうしてサポート手段30を介して保持された補助車輪5,6において、車軸33はベースブロック37のスライド用長孔36とスライドブロック40の挿入用円孔38とに同時に貫挿され、車軸33自体はスライドブロック40と一体となると共に、車軸33は、ベースブロック37のスライド用長孔36に沿ってスライドブロック40と共に上下に移動可能となる。また、ベースブロック37の貫通孔35内においてフレームFの天板部下面とスライドブロック40上端との間に介挿されたスプリング39の弾発力によって車軸33自体は、ベースブロック37のスライド用長孔36の下縁部に常に係止されるものとしてある。   In the auxiliary wheels 5 and 6 held through the support means 30 in this way, the axle 33 is inserted through the slide long hole 36 of the base block 37 and the insertion circular hole 38 of the slide block 40 at the same time. While being integrated with the slide block 40, the axle 33 can move up and down together with the slide block 40 along the slide long hole 36 of the base block 37. Further, the axle 33 itself is caused to slide the base block 37 by the elastic force of the spring 39 inserted between the lower surface of the top plate portion of the frame F and the upper end of the slide block 40 in the through hole 35 of the base block 37. The lower edge of the hole 36 is always locked.

サポート手段30を介しての補助車輪5,6の組立に際し、図8に示すように、ベースブロック37の下面側から貫通孔35内にコイル状のスプリング39を挿入し、さらに貫通孔35内にスライドブロック40を挿入してから、ベースブロック37のスライド用長孔36とスライドブロック40の挿入用円孔38とを互いに合致させた状態にしておく。そして、予め、左右のベースブロック37の間に補助車輪5または6を配置しておき、車軸33を一方の支持側部31側の支持孔から挿入してから一方のベースブロック37のスライド用長孔36とスライドブロック40の挿入用円孔38とに貫挿させる。次いで、両側の金属ワッシャと共に補助車輪5,6のボールベアリング34a,34bに貫挿させ、反対側にある他方のベースブロック37のスライド用長孔36とスライドブロック40の挿入用円孔38とに貫挿させてから反対側にある他方の車輪支持側部側の支持孔に挿入する。最後にベースブロック37の左右外側に突出した車軸33両端側を止めワッシャもしくは止めネジ等の固定部材(図示せず)によって固定する。   When the auxiliary wheels 5 and 6 are assembled through the support means 30, as shown in FIG. 8, a coiled spring 39 is inserted into the through hole 35 from the lower surface side of the base block 37, and further into the through hole 35. After the slide block 40 is inserted, the slide long hole 36 of the base block 37 and the insertion circular hole 38 of the slide block 40 are made to coincide with each other. The auxiliary wheels 5 or 6 are arranged between the left and right base blocks 37 in advance, and the slide length of one base block 37 is inserted after the axle 33 is inserted from the support hole on the one support side 31 side. The hole 36 is inserted into the insertion circular hole 38 of the slide block 40. Next, the ball bearings 34a and 34b of the auxiliary wheels 5 and 6 are inserted with the metal washers on both sides, and into the slide long hole 36 of the other base block 37 and the insertion circular hole 38 of the slide block 40 on the opposite side. After being inserted, it is inserted into the support hole on the side of the other wheel support side on the opposite side. Finally, both end sides of the axle 33 protruding to the left and right outside of the base block 37 are fixed by a fixing member (not shown) such as a set washer or a set screw.

また、図9乃至図11には、本発明を実施するための最良の一形態における他例が示されている。尚、本例における構成において、前記した実施の形態と略同じ部分には同じ符号を附することで、その詳細な説明を省略する。すなわち、本例においては、クラッチ部材11a,111bおよび連結部材12を介して近接対向する左右の車軸7,8それぞれに支承されている重量用車輪9,10を左右それぞれで対となる二組として合計四輪とした構成としてある。この場合、車輪ユニット本体1のフレームFは、互いに隣接する四つの重量用車輪9,10全体の幅員に対応するよう平面形状が横長で略扁平八角形状に形成してある。また、これに対応してフレームFに支持された操作手段13を構成する操作軸15、作用軸16それぞれも若干長目に形成してある。   9 to 11 show other examples in the best mode for carrying out the present invention. In the configuration of this example, the same reference numerals are given to the same parts as those in the above-described embodiment, and the detailed description thereof is omitted. That is, in this example, the weight wheels 9 and 10 supported on the left and right axles 7 and 8 that are closely opposed to each other via the clutch members 11a and 111b and the connecting member 12 are paired in the left and right respectively. The configuration is a total of four wheels. In this case, the frame F of the wheel unit main body 1 has a horizontally long planar shape and a substantially flat octagonal shape so as to correspond to the width of the four adjacent weight wheels 9, 10. Correspondingly, each of the operating shaft 15 and the operating shaft 16 constituting the operating means 13 supported by the frame F is formed slightly longer.

次に、以上のように構成された最良の形態についての使用、動作の一例について説明する。連結部材12の内周に形成されている内歯が、車軸7,8軸端のクラッチ部材11a,11b外周に形成されている外歯に同時に噛合した状態では、両重量用車輪9,10の車軸7,8は一体的に結合されて両重量用車輪9,10は同時回転する。   Next, an example of use and operation of the best mode configured as described above will be described. In a state where the inner teeth formed on the inner circumference of the connecting member 12 are simultaneously meshed with the outer teeth formed on the outer circumferences of the clutch members 11a and 11b at the axle ends of the axles 7 and 8, both the weight wheels 9 and 10 are engaged. The axles 7 and 8 are integrally coupled so that the weight wheels 9 and 10 rotate simultaneously.

すなわち、操作軸15端部の操作ハンドルHを回転させることにより、回転する操作軸ネジ155溝14を介して押圧体19を左方向(図4中、矢印方向)に移動する。このとき、作用軸16は圧縮バネ17の作用により、その端部が押圧体19の長溝20側端部の当接面20aに押圧付勢された状態となっており、作用軸16は押圧体19の作用に追従した移動によりシフター18を同方向へ移動させる。同時にシフター18の移動により、連結部材12は重量用車輪9の車軸7軸端のクラッチ部材11aから移動して他方の重量用車輪10の車軸8軸端のクラッチ部材11b外周の外歯に噛合する。こうすることで、左右の重量用車両9,10は一体的に回転し、走行方向に対して直進させる。   That is, by rotating the operation handle H at the end of the operation shaft 15, the pressing body 19 is moved in the left direction (the arrow direction in FIG. 4) via the rotating operation shaft screw 155 groove 14. At this time, the action shaft 16 is in a state of being pressed and urged by the action of the compression spring 17 to the abutting surface 20a of the end portion of the pressing body 19 on the long groove 20 side. The shifter 18 is moved in the same direction by movement following the action of 19. At the same time, due to the movement of the shifter 18, the connecting member 12 moves from the clutch member 11 a at the axle 7 shaft end of the weight wheel 9 and meshes with the external teeth on the outer periphery of the clutch member 11 b at the axle 8 shaft end of the other weight wheel 10. . By doing so, the left and right heavy vehicles 9 and 10 rotate integrally and advance straight in the traveling direction.

また、図3に示すように、連結部材12の内周に形成されている内歯が、車軸7軸端のクラッチ部材11a外周に形成されている外歯に噛合した状態では、両重量用車輪9,10は互いに切り離されて独立して回転する。このとき、走行方向に対して左右への横方向に外力を加えると車輪ユニット本体1は支持体4を中心として旋回する動きが生じる。これにより車輪ユニット本体1はそれぞれで自由回転する重量用車輪9または10の廻りを旋回するようなものとなり、相互で内輪差を生じさせることで、その回転差により左右方向のいずれかに方向転換する。   In addition, as shown in FIG. 3, in the state where the inner teeth formed on the inner periphery of the connecting member 12 mesh with the outer teeth formed on the outer periphery of the clutch member 11a at the axle 7 shaft end, both weight wheels 9, 10 are separated from each other and rotate independently. At this time, when an external force is applied in the lateral direction to the left and right with respect to the traveling direction, the wheel unit body 1 moves so as to turn around the support 4. As a result, the wheel unit main body 1 turns around the freely rotating heavy wheels 9 or 10 and causes an inner ring difference between them, thereby changing the direction to the left or right direction depending on the rotation difference. To do.

車輪ユニット本体1の前後一対の補助車輪5,6に設けられているサポート手段30は、図7に示すように、ベースブロック37内のスライドブロック40をスプリング39の弾発力によって車軸33と共にスライド用長孔36に沿っての下方側へ付勢させ、当該車軸33をベースブロック37のスライド用長孔36の下縁部に係止させられた状態となるため、補助車輪5,6は床面側へ常に圧接させられている状態となる。これにより車輪ユニット本体1の移動中において、車輪ユニット本体1自体の重量用車輪9,10を介しての前後方向へのガタ付きを吸収し、直進時においても、左右旋回においても車輪ユニット本体1を安定走行させる。   The support means 30 provided on the pair of front and rear auxiliary wheels 5 and 6 of the wheel unit main body 1 slides the slide block 40 in the base block 37 together with the axle 33 by the spring force of the spring 39 as shown in FIG. Since the axle 33 is engaged with the lower edge portion of the slide long hole 36 of the base block 37, the auxiliary wheels 5 and 6 are placed on the floor. It will be in the state always press-contacted to the surface side. As a result, during the movement of the wheel unit main body 1, the backlash in the front-rear direction through the weight wheels 9 and 10 of the wheel unit main body 1 itself is absorbed. Make it run stably.

本発明を実施するための最良の形態における重量物運搬用車輪ユニットを利用した台車における使用状態の斜視図である。It is a perspective view of the use condition in the trolley | bogie using the heavy-duty conveyance wheel unit in the best form for implementing this invention. 同じく重量物運搬用車輪ユニットの平面図である。It is a top view of the wheel unit for heavy objects conveyance similarly. 図2のA−A断面図である。It is AA sectional drawing of FIG. 図3のB−B断面図である。It is BB sectional drawing of FIG. 同じく重量物運搬用車輪ユニットの一部断面を示す側面図である。It is a side view which shows the partial cross section of the wheel unit for heavy article conveyance similarly. 同じく重量用車輪における側面図である。It is a side view in a wheel for weight similarly. 同じく補助車輪における一部断面を示す正面図である。It is a front view which shows the partial cross section in an auxiliary wheel similarly. 同じくサポート手段の分解斜視図である。It is a disassembled perspective view of a support means similarly. 重量物運搬用車輪ユニットの他例を示す平面図である。It is a top view which shows the other example of the wheel unit for heavy article conveyance. 図9のC−C断面図である。It is CC sectional drawing of FIG. 図10のD−D断面図である。It is DD sectional drawing of FIG.

符号の説明Explanation of symbols

P1…キャスターユニット P2…ユニバーサル電動ユニット
Q…運搬物 R…台車台部
F…フレーム G…リング溝
H…操作ハンドル K…キー
1…車輪ユニット本体 2…支持面
3…ユニットベース 4…支持体
5,6…補助車輪 7,8…車軸
9,10…重量用車輪 11a,11b…クラッチ部材
12…連結部材 13…操作手段
14…ネジ溝 15…操作軸
16…作用軸 16a…ネジ溝
16b…フランジ 17…圧縮バネ
18…シフター 18a…シフターアーム
19…押圧体 20…長溝
20a…当接面 21…ピボット軸受
22…回転軸 23…ボールベアリング
30…サポート手段 31,32…車輪支持部
33…車軸 34a,34b…ボールベアリング
35…貫通孔 36…スライド用長孔
37…ベースブロック 38…挿入用円孔
39…スプリング 40…スライドブロック
P1 ... Caster unit P2 ... Universal electric unit Q ... Transported object R ... Carriage stand F ... Frame G ... Ring groove H ... Operating handle K ... Key 1 ... Wheel unit body 2 ... Support surface 3 ... Unit base 4 ... Support 5 6, auxiliary wheels 7, 8 ... axles 9, 10 ... heavy wheels 11a, 11b ... clutch member 12 ... connecting member 13 ... operating means 14 ... screw groove 15 ... operating shaft 16 ... working shaft 16a ... screw groove 16b ... flange DESCRIPTION OF SYMBOLS 17 ... Compression spring 18 ... Shifter 18a ... Shifter arm 19 ... Pressing body 20 ... Long groove 20a ... Contact surface 21 ... Pivot bearing 22 ... Rotating shaft 23 ... Ball bearing 30 ... Support means 31, 32 ... Wheel support part 33 ... Axle 34a 34b ... Ball bearing 35 ... Through hole 36 ... Sliding long hole 37 ... Base block 38 ... Insertion circular hole 39 ... Spray Grayed 40 ... slide block

Claims (2)

上面にユニットベースを回転可能に支承し、下面に走行方向の前後で一対となる補助車輪を車軸により回転自在に支承したフレームと、該フレームの下面で、互いに独立した車軸によって回転可能に軸支され、該両車軸の軸端それぞれに備え付けられたクラッチ部材間を操作手段によって移動可能とすることにより連結離脱を行なう連結部材を備えた左右一対の重量用車輪とを有する重量物運搬用車輪ユニットであって、補助車輪を床面側へ付勢させるよう当該補助車輪の車軸部位にサポート手段を備えたことを特徴とする重量物運搬用車輪ユニット。   A unit base is rotatably supported on the upper surface, and a frame in which a pair of auxiliary wheels are supported rotatably on the lower surface by an axle on the lower surface, and a lower surface of the frame is rotatably supported by an independent axle. And a pair of left and right weight wheels provided with a connecting member for connecting and disconnecting by enabling movement between the clutch members provided at the shaft ends of the two axles by operating means. A wheel unit for carrying heavy objects, characterized in that a support means is provided at the axle portion of the auxiliary wheel so as to bias the auxiliary wheel toward the floor surface. サポート手段は、車軸部位に向けて垂下突設され、上下方向に沿って貫通孔を穿設し、且つ左右側面には車軸を通して上下方向にスライド可能にするスライド用長孔を穿設して成るベースブロックと、貫通孔に昇降自在に内挿され、スライド用長孔に対向して側面に車軸を貫挿させる挿入用円孔を有し、上端がフレームの下面によって係止されているスプリングの下端が当接されることで常時下方向へ向けて付勢されて成るスライドブロックとから構成されている請求項1記載の重量物運搬用車輪ユニット。
The support means is provided so as to project downwardly toward the axle portion, and has a through-hole formed in the vertical direction, and a slide long hole that allows the vertical slide through the axle on the left and right sides. A spring having a base block and an insertion circular hole that is inserted in the through hole so as to be movable up and down, is inserted into the side face of the slide, and has an upper end locked by the lower surface of the frame. The heavy-duty carrying wheel unit according to claim 1, comprising a slide block that is always urged downward by contacting the lower end thereof.
JP2005178982A 2005-06-20 2005-06-20 Heavy load conveying wheel unit Pending JP2006347479A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010100152A (en) * 2008-10-23 2010-05-06 Toraitekusu:Kk Conveyance carriage
KR101698902B1 (en) * 2016-03-31 2017-01-23 이승호 Power trolley for moving heavy load
CN110588744A (en) * 2019-10-21 2019-12-20 江苏盛久变压器有限公司 Transformer transport vechicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010100152A (en) * 2008-10-23 2010-05-06 Toraitekusu:Kk Conveyance carriage
KR101698902B1 (en) * 2016-03-31 2017-01-23 이승호 Power trolley for moving heavy load
CN110588744A (en) * 2019-10-21 2019-12-20 江苏盛久变压器有限公司 Transformer transport vechicle

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