JP6231905B2 - Transport cart - Google Patents

Transport cart Download PDF

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JP6231905B2
JP6231905B2 JP2014033426A JP2014033426A JP6231905B2 JP 6231905 B2 JP6231905 B2 JP 6231905B2 JP 2014033426 A JP2014033426 A JP 2014033426A JP 2014033426 A JP2014033426 A JP 2014033426A JP 6231905 B2 JP6231905 B2 JP 6231905B2
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fork
vehicle body
transport carriage
transport
bottom plate
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JP2015157684A (en
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佳一 山下
佳一 山下
健士 渡邊
健士 渡邊
武貢 吉仲
武貢 吉仲
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Okamura Corp
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Description

本発明は、物品を運搬する搬送台車に関する。   The present invention relates to a transport carriage for transporting articles.

上下に複数段かつ左右に複数列の間口が設けられた複数の収納ラックが設置され、大規模な物品収容管理の可能な大型の倉庫システムが普及してきている。上部に物品を載置可能な載置部と搬送台車の車輪が走行する走行部とが間口に対して奥行き方向に延びるように敷設され、この走行部上を車輪により自走する搬送台車を走行させることで、搬送台車により物品を所定の間口内の載置部に対して搬入もしくは搬出を行う特許文献１のような搬送設備が知られている。   A large-scale warehouse system capable of large-scale article storage management has been spread, in which a plurality of storage racks having a plurality of upper and lower steps and a plurality of rows of openings on the left and right are installed. An upper part on which the article can be placed and a traveling part on which the wheels of the transport carriage run extend in the depth direction with respect to the frontage. By doing so, there is known a transport facility such as Patent Document 1 in which an article is carried into or out of a placement unit in a predetermined opening by a transport carriage.

特許文献１の搬送台車は、車体の上方に物品を載置支持し昇降可能な載置台を有しており、この搬送台車は載置台を降下した状態で載置部上の物品に干渉しないように走行し、載置台の上昇により指定された物品底部を載置部から所定高さ浮かせて運搬するようになっている。出願人の開発しているこれら大型の倉庫システムに利用される搬送設備は、フォークリフトを利用して搬送台車を各間口間で自由に移動させることによって、少ない台数の搬送台車で収納ラック内の物品を入出庫可能としている。フォークリフトは基本的に人的操作によるため、搬送台車の落下等の危険があり、運搬中の搬送台車とフォークとの動きを制限して搬送台車の落下を防止するために、搬送台車における車体の下部にはフォークリフトのフォークが収容されるフォーク収容部材を突設させている。   The transport carriage of Patent Document 1 has a placement base that can place and support an article on the upper side of the vehicle body and can be moved up and down, and this transportation carriage does not interfere with the article on the placement section while the placement base is lowered. The article bottom portion designated by the ascent of the mounting table is lifted from the mounting portion by a predetermined height to be transported. The transportation equipment used in these large warehouse systems developed by the applicant is that the goods in the storage rack can be transported with a small number of transport carts by using a forklift to freely move the transport cart between each frontage. It is possible to enter and exit. Forklifts are basically operated by humans, so there is a danger of the transport cart falling, etc., and the movement of the transport cart and the fork during transportation is restricted to prevent the transport cart from falling. A fork accommodating member for accommodating a fork of a forklift is projected at the lower part.

特許第３１３８９８３号公報（第４頁、第１０図）Japanese Patent No. 3138983 (page 4, FIG. 10)

出願人の開発しているこれら大型の倉庫システムに利用される搬送設備は、フォークリフトを利用して搬送台車を各間口間で自由に移動させることによって、少ない台数の搬送台車で収納ラック内の物品を入出庫可能としているものの、収納ラック間の移動、更には床面上においても物品を搬送できる拡張性に富んだ搬送台車が望まれている。しかしながら上記した搬送台車の車輪を利用して収納ラック内及び収納ラック外を走行させる場合には、車輪の大きさにより搬送台車の占める上下寸法が高くなり、収納ラックの収納効率が悪くなってしまう。   The transportation equipment used in these large warehouse systems developed by the applicant is that the goods in the storage rack can be transported with a small number of transport carts by using a forklift to freely move the transport cart between each frontage. However, there is a demand for a transport cart with high expandability that can move articles between storage racks and transport articles even on the floor surface. However, when traveling inside and outside the storage rack using the wheels of the transport carriage described above, the vertical dimension occupied by the transport carriage is increased depending on the size of the wheels, and the storage efficiency of the storage rack is deteriorated. .

本発明は、このような問題点に着目してなされたもので、拡張性に富んだ搬送台車を提供することを目的とする。   The present invention has been made paying attention to such problems, and an object of the present invention is to provide a transport cart rich in expandability.

前記課題を解決するために、本発明の搬送台車は、
上部に物品を載置可能とする載置部と搬送台車の車輪を走行可能とする走行部とを複数備える収納ラック内を走行する自走式の搬送台車であって、
前記搬送台車は、昇降可能な載置台、前記車輪を有する車体、そして前記車体の底板下面に着脱自在に固定されたフォークリフトのフォーク収容部材、を備え、
前記車輪の最下点を前記車体の底板下面と前記フォーク収容部材の最下点との間に位置させたことを特徴としている。
この特徴によれば、収納ラック内における走行時には、フォーク収容部材の一部が複数の走行部に挟まれた空間に配置されることになるため、車輪の最下点から延びる搬送台車の高さを抑えられ、収納ラックの収納効率が向上する。更に、フォーク収納部材を取外すことで車体の底板下面と床面とが接地せず、収納ラック外の走行が可能となる。 In order to solve the above problems, the transport carriage of the present invention is
A self-propelled transport carriage that travels in a storage rack that includes a plurality of placement sections that allow an article to be placed on the upper portion and a traveling section that can travel the wheels of the transport carriage.
The transport carriage includes a mounting table that can be moved up and down, a vehicle body having the wheels, and a fork storage member of a forklift that is detachably fixed to a lower surface of a bottom plate of the vehicle body,
The lowest point of the wheel is located between the lower surface of the bottom plate of the vehicle body and the lowest point of the fork receiving member.
According to this feature, when traveling in the storage rack, a portion of the fork receiving member is disposed in a space sandwiched between the plurality of traveling portions, so that the height of the transport carriage extending from the lowest point of the wheel is increased. And the storage efficiency of the storage rack is improved. Further, by removing the fork storage member, the lower surface of the bottom plate and the floor surface of the vehicle body are not grounded, and traveling outside the storage rack becomes possible.

前記フォーク収容部材は、フォークリフトの２本のフォークがそれぞれ収容される断面上向きコ字状部位を前記車体の幅方向両側に一体に備えた構造であることを特徴としている。
この特徴によれば、フォークリフトの２本のフォークが断面上向きコ字状部位と車体の底板下面とで形成される筒状部内にそれぞれ収容されるため、搬送台車の運搬時における搬送台車と２本のフォークとの相対移動が制限され安定性が高く、かつフォーク収容部材が一体構造であるため、車体の底板下面に対してフォーク収容部材を簡単に着脱することができる。 The fork housing member is characterized in that it has a structure in which a U-shaped portion with an upward cross-section for accommodating two forks of a forklift is integrally provided on both sides in the width direction of the vehicle body.
According to this feature, since the two forks of the forklift are respectively housed in the cylindrical portions formed by the U-shaped section facing upward and the bottom surface of the bottom plate of the vehicle body, Since the relative movement with respect to the fork is restricted and the stability is high, and the fork housing member has an integral structure, the fork housing member can be easily attached to and detached from the bottom surface of the bottom plate of the vehicle body.

前記フォーク収容部材は、回転対称の形状であり、前記車体の底板に対して固定される固定手段の位置が同様に回転対称に配置されていることを特徴としている。
この特徴によれば、フォーク収容部材と車体の底板との固定時において、フォーク収容部材を車体に対して向きに関わらず固定でき、固定作業を簡便に行うことができる。 The fork receiving member has a rotationally symmetric shape, and the position of the fixing means fixed to the bottom plate of the vehicle body is similarly arranged in a rotationally symmetric manner.
According to this feature, when the fork housing member and the bottom plate of the vehicle body are fixed, the fork housing member can be fixed regardless of the direction of the vehicle body, and the fixing operation can be easily performed.

実施例における搬送台車が収容棚の走行レールを走行する状態を示す側面図である。It is a side view which shows the state which the conveyance trolley | bogie in an Example drive | works the traveling rail of a storage shelf. 搬送台車の載置台が物品を持ち上げた状態を示す正面図である。It is a front view which shows the state which the mounting base of the conveyance trolley lifted the articles | goods. 搬送台車の構造を示す側面図である。It is a side view which shows the structure of a conveyance trolley. 車体を示す上面図である。It is a top view which shows a vehicle body. フォーク収納部材を示す底面図である。It is a bottom view which shows a fork storage member. 車体にフォーク収納部材が取付けられた状態の搬送台車を示す正面図である。It is a front view which shows the conveyance trolley in the state in which the fork storage member was attached to the vehicle body. （ａ）は、フォーク収納部材にフォークを挿入する手順で、フォークをフォーク挿入口に対向させた状態を示す側面図、（ｂ）は、同じく、フォークをフォーク挿入口に挿入した状態を示す側面図、（ｃ）は、フォークで搬送台車を持ち上げた状態を示す側面図である。(A) is a side view showing a state where the fork is opposed to the fork insertion port in a procedure for inserting the fork into the fork storage member, and (b) is a side view showing a state where the fork is inserted into the fork insertion port. FIG. 4C is a side view showing a state where the transport carriage is lifted with a fork. 車体からフォーク収納部材を取外した状態の搬送台車を示す正面図である。It is a front view which shows the conveyance trolley in the state which removed the fork storage member from the vehicle body. 搬送台車の床面上における走行可能方向を示す斜視図である。It is a perspective view which shows the driving | running | working possible direction on the floor surface of a conveyance trolley | bogie.

本発明に係る搬送台車を実施するための形態を実施例に基づいて以下に説明する。   EMBODIMENT OF THE INVENTION The form for implementing the conveyance trolley | bogie which concerns on this invention is demonstrated below based on an Example.

実施例に係る搬送台車につき、図１から図９を参照して説明する。   The transport cart according to the embodiment will be described with reference to FIGS.

図１及び図２に示されるように、搬送台車１は、複数の間口２ａを上下左右に備えた収納ラック２，２，…が複数配置された大型倉庫等において、指定された物品３を収納ラック２の所定の間口２ａに対して搬入もしくは搬出を行う際に用いられる。図３に示されるように、収納ラック２の各間口２ａは、正面視Ｌ字状、逆Ｌ字状で一対に対向し間口２ａの奥行方向に延びる走行レール４，４と、収納ラック２，２，…を構成する枠体２ｂ，２ｂと、により主に構成されている。走行レール４の上部の載置部４ａには、物品３が載置されたパレット５が走行レール４の奥行方向に沿って複数支持されている。また、走行レール４の載置部４ａにおける外方側部には、反し部４ｃが設けられており、パレット５の落下を防止するようになっている。   As shown in FIGS. 1 and 2, the transport carriage 1 stores a specified article 3 in a large warehouse or the like in which a plurality of storage racks 2, 2,... It is used when carrying in or out of a predetermined slot 2a of the rack 2. As shown in FIG. 3, each frontage 2 a of the storage rack 2 has a pair of running rails 4, 4 that extend in the depth direction of the frontage 2 a in a L-shape and an inverted L-shape when viewed from the front, 2,... Are mainly constituted by frame bodies 2b and 2b. A plurality of pallets 5 on which the articles 3 are placed are supported along the depth direction of the running rail 4 on the placing portion 4 a on the upper side of the running rail 4. Further, a warping portion 4 c is provided on the outer side portion of the placement portion 4 a of the traveling rail 4 so as to prevent the pallet 5 from falling.

図１及び図２に示されるように、搬送台車１は、載置台７がパレット５の下面から離間する最下降状態で走行レール４，４の走行部４ｂ，４ｂを走行してパレット５の下方に進入した後、載置台７を上昇させることでパレット５ごと物品３を持ち上げ、パレット５及び物品３を走行レール４，４の載置部４ａ，４ａから所定高さ浮かせて運搬するようになっている。なお、本実施例では、載置台７は、物品３を載せるためのパレット５を載置しているが、これに限らず、載置台７が直接に物品３を載置してもよい。   As shown in FIG. 1 and FIG. 2, the transport carriage 1 travels on the traveling portions 4 b and 4 b of the traveling rails 4 and 4 and moves below the pallet 5 in the lowest lowered state where the mounting table 7 is separated from the lower surface of the pallet 5. Then, the article 3 is lifted together with the pallet 5 by raising the placing table 7, and the pallet 5 and the article 3 are lifted from the placing parts 4 a and 4 a of the traveling rails 4 and 4 to be transported. ing. In this embodiment, the mounting table 7 mounts the pallet 5 on which the article 3 is placed. However, the present invention is not limited to this, and the mounting table 7 may directly place the article 3.

図３及び図４に示されるように、搬送台車１は走行レール４，４の走行部４ｂ，４ｂを奥行方向に走行可能な車体６と、物品３を載置支持し車体６に対し昇降可能に設けられた載置台７と、該載置台７を昇降させる昇降駆動部８と、搬送台車１を走行レール４上で走行可能とする走行装置１２とを主に備えている。   As shown in FIGS. 3 and 4, the transport carriage 1 can move up and down with respect to the vehicle body 6 by mounting and supporting the vehicle body 6 that can travel in the depth direction along the traveling portions 4 b and 4 b of the traveling rails 4 and 4. And a traveling drive unit 8 that allows the transport carriage 1 to travel on the traveling rail 4.

図４に示されるように、車体６は、金属板の前後を屈曲して断面コ字状に形成された底板１０ａ及び前後の側板部１０ｂ，１０ｃを有する基部材１０と、基部材１０の左右に取付けられる側板１１，１１と、を備え、側板１１，１１は、図示しないボルト・ナット等により基部材１０に対して着脱可能に固定されている。   As shown in FIG. 4, the vehicle body 6 includes a base member 10 having a bottom plate 10 a and front and rear side plate portions 10 b, 10 c formed by bending the front and rear of a metal plate to have a U-shaped cross section, and the left and right sides of the base member 10. The side plates 11 and 11 are detachably fixed to the base member 10 by bolts and nuts (not shown).

走行装置１２は、駆動モータ１２ａ、駆動車輪１３及び従動輪１４により主に構成され、駆動モータ１２ａが図示しないケーブルにより制御部と接続されており、当該制御部から送信される回転方向や回転数等の情報に基づき回転駆動するようになっている。   The traveling device 12 is mainly configured by a drive motor 12a, a drive wheel 13, and a driven wheel 14, and the drive motor 12a is connected to a control unit by a cable (not shown), and the rotation direction and the number of rotations transmitted from the control unit. Based on such information, it is driven to rotate.

また、昇降装置８は、前後方向端部側にそれぞれ配置される軸部材１５，１６と、軸部材１５を回動させる昇降駆動部１７と、昇降駆動部１７の動力を軸部材１６に伝えるチェーン１８とを有している。軸部材１５，１６には、対向する位置にギア１９，２０が固着されており、このギア１９，２０にそれぞれチェーン１８が嵌合して架け渡されることにより、軸部材１５と軸部材１６とが同方向に同期回転するようになっている。   The elevating device 8 includes shaft members 15 and 16 disposed on the front and rear end portions, a lifting drive unit 17 that rotates the shaft member 15, and a chain that transmits the power of the lifting drive unit 17 to the shaft member 16. 18. Gears 19 and 20 are fixed to the shaft members 15 and 16 at opposite positions, and the shafts 15 and 16 are connected to the gears 19 and 20 by fitting the chain 18 over them. Are synchronously rotated in the same direction.

図４に示されるように、軸部材１５及び軸部材１６は、基部材１０の底板部１０ａの４つ角近傍に固定された台座３３，３３，…に対して回転可能に枢支されていることにより、底板部１０ａよりも所定高さ上方の位置で保持されている。また、昇降駆動部１７は、図示しないケーブルによりシーケンサ等の制御部３４と接続されており、制御部３４から送信される回転方向や回転角度及び回転数等の情報に基づき回転駆動する。これら制御部３４、走行駆動部１２，１２及び昇降駆動部１７は、車体６内に内蔵されたバッテリー４４，４４から供給される電力によりそれぞれ稼働可能となっている。   As shown in FIG. 4, the shaft member 15 and the shaft member 16 are pivotally supported with respect to pedestals 33, 33,... Fixed in the vicinity of the four corners of the bottom plate portion 10 a of the base member 10. As a result, it is held at a position higher than the bottom plate portion 10a by a predetermined height. Further, the elevating drive unit 17 is connected to a control unit 34 such as a sequencer by a cable (not shown), and is driven to rotate based on information such as a rotation direction, a rotation angle, and a rotation number transmitted from the control unit 34. The control unit 34, the travel drive units 12 and 12, and the lift drive unit 17 can be operated by electric power supplied from batteries 44 and 44 built in the vehicle body 6.

また、基部材１０の前後の側板部１０ｂ，１０ｃには、それぞれの左右端部から外側に張り出す水平ローラ２８，２８，…が設けられている。更に、左右の側板１１，１１には、その前後方向の中央部近傍に水平ローラ２９，２９がそれぞれ設けられている。これら水平ローラ２８，２８，…及び水平ローラ２９，２９が走行レール４の側面に当接することにより、車体６が走行レール４に沿って走行するようになっている。   Further, the front and rear side plate portions 10b and 10c of the base member 10 are provided with horizontal rollers 28, 28,... Projecting outward from the respective left and right end portions. Further, the left and right side plates 11 and 11 are provided with horizontal rollers 29 and 29 in the vicinity of the center in the front-rear direction. The horizontal rollers 28, 28,... And the horizontal rollers 29, 29 come into contact with the side surfaces of the traveling rail 4, so that the vehicle body 6 travels along the traveling rail 4.

図３から図６に示されるように、搬送台車１の底板１０ａの下面１０ｄには、フォーク収容部材２１が設けられている。図５及び図６に示すように、フォーク収容部材２１は、底板２２、側板２４、天板２５及び挿入部フランジ２６から構成される。図５に示されるように、フォーク収容部材２１は、車体６の底板１０ａに、天板２５及びフランジ２６を、ボルト孔２６ａ，２６ａ，…を介してボルト３０，３０，…により着脱可能に結合されるようになっている。また、図２及び図５に示されるように、フォーク収納部材２１は、その底板２２，２２の最下点２２ａ，２２ａが駆動車輪１３の最下点１３ａ及び従動輪１４の最下点１４ａより下方に位置するように設計されている。   As shown in FIGS. 3 to 6, a fork housing member 21 is provided on the lower surface 10 d of the bottom plate 10 a of the transport carriage 1. As shown in FIGS. 5 and 6, the fork housing member 21 includes a bottom plate 22, a side plate 24, a top plate 25, and an insertion portion flange 26. 5, the fork housing member 21 is detachably coupled to the bottom plate 10a of the vehicle body 6 with a top plate 25 and a flange 26 by bolts 30, 30,... Via bolt holes 26a, 26a,. It has come to be. As shown in FIGS. 2 and 5, the fork storage member 21 has the bottom points 22 a and 22 a of the bottom plates 22 and 22 from the lowest point 13 a of the driving wheel 13 and the lowest point 14 a of the driven wheel 14. Designed to be located below.

また、フォーク収容部材２１は、回転対称形状であるとともに、フランジ２６におけるボルト孔２６ａ，２６ａ，…もまた回転対称形状であるため、フォーク収納部材２１は車体６の底板１０ａとの固定時において、フォーク収納部材２１の車体６に対する向きを確認することなく正確な方向で固定作業を行うことができる。   Further, since the fork housing member 21 has a rotationally symmetric shape and the bolt holes 26a, 26a,... In the flange 26 are also rotationally symmetric, the fork housing member 21 is fixed to the bottom plate 10a of the vehicle body 6. The fixing operation can be performed in an accurate direction without confirming the orientation of the fork storage member 21 with respect to the vehicle body 6.

また、図３に示されるように、フォークリフトのフォークが挿入されるフォーク収容部２３は、底板２２の両端に側板２４が立設され、正面から見て上方に開放した略コ字状として形成されている。更に、フォークの挿入移動が容易となるように、フォーク収容部材２１のフォーク挿入口は、搬送台車１の中心に向かうにつれて下方に傾斜するように形成されている。更に、図３及び図４に示されるように、側板２４，２４及び天板２５の両端部即ち側板端部２４ａ，２４ａ，…及び天板端部２５ａ，２５ａが搬送台車１の走行方向における車体６の端部より突出するように長く形成されており、後述するフォークリフトのフォークの挿入時においてフォークリフトの運転者がフォーク収容部２３，２３の位置を直接確認でき、挿入作業を正確に行うことができる。   Further, as shown in FIG. 3, the fork accommodating portion 23 into which the fork of the forklift is inserted is formed as a substantially U-shape in which side plates 24 are erected on both ends of the bottom plate 22 and open upward as viewed from the front. ing. Further, the fork insertion port of the fork receiving member 21 is formed to be inclined downward toward the center of the transport carriage 1 so that the fork can be easily inserted and moved. Further, as shown in FIGS. 3 and 4, both end portions of the side plates 24, 24 and the top plate 25, that is, side plate end portions 24a, 24a,... And the top plate end portions 25a, 25a are the vehicle bodies in the traveling direction of the transport carriage 1. The forklift driver can directly check the positions of the fork storage portions 23 and 23 when inserting the fork of the forklift described later, and the insertion operation can be performed accurately. it can.

次に、フォークリフトによる搬送台車１の運搬方法について説明する。図７に示すように、床面上に置かれた搬送台車１をフォークリフトで運搬する場合には、フォーク４０を搬送台車１のフォーク挿入部材２１のフォーク収容口３１に対向させる（図７（ａ）参照）。次に、フォーク４０をゆっくりフォーク収容口３１に挿入移動した後（図７（ｂ）参照）、フォーク４０を上昇させ、搬送台車１を床面から離れるように持ち上げる（図７（ｃ）参照）。持ち上げられた搬送台車１は、設置位置である所定のラック２まで運搬され、図１の間口２ａの走行レール４の高さまで上昇され、走行レール４上に降ろされて、最後に、フォーク４０はフォーク収容部２３から引き抜かれ、走行レール４上に配置される。このように、フォーク収容部材２１にフォーク４０を収容させることによって、運搬中の搬送台車１がフォーク４０に対し動くことなく制限され、搬送台車１の落下等の危険を効果的に防止することができる。   Next, a method for transporting the transport carriage 1 using a forklift will be described. As shown in FIG. 7, when the transport carriage 1 placed on the floor is transported by a forklift, the fork 40 is made to face the fork receiving port 31 of the fork insertion member 21 of the transport carriage 1 (FIG. )reference). Next, after the fork 40 is slowly inserted and moved into the fork receiving port 31 (see FIG. 7B), the fork 40 is raised and the transport carriage 1 is lifted away from the floor (see FIG. 7C). . The lifted transport carriage 1 is transported to a predetermined rack 2 which is the installation position, is raised to the height of the traveling rail 4 at the frontage 2a in FIG. 1, is lowered onto the traveling rail 4, and finally the fork 40 is It is pulled out from the fork accommodating part 23 and arranged on the traveling rail 4. In this way, by accommodating the fork 40 in the fork housing member 21, the transport carriage 1 being transported is restricted without moving relative to the fork 40, and it is possible to effectively prevent danger such as dropping of the transport carriage 1. it can.

また、倉庫の設計によっては、例えば、収納ラック２外において物品を載置台７上に載置させて走行させ、前記昇降装置８を利用して物品を所定位置に配置される棚台上に移載するような利用方法も想定される。このような場合において搬送台車１は、フォーク収容部材２１を車体６より取外すことで、搬送台車１を床面走行可能な状態に切り替えることができるようになっている。詳しくは、図８及び図９を用いて説明する。   Further, depending on the design of the warehouse, for example, the article is placed on the placing table 7 and traveled outside the storage rack 2, and the article is moved onto a shelf placed at a predetermined position using the lifting device 8. The usage methods listed are also envisaged. In such a case, the transport cart 1 can switch the transport cart 1 to a state where it can run on the floor by removing the fork housing member 21 from the vehicle body 6. Details will be described with reference to FIGS.

図８に示されるように、駆動車輪１３の最下点１３ａ及び従動輪１４の最下点１４ａは、車体６の底板１０ａの下面１０ｄよりも下方に位置するように設計されているため、駆動車輪１３及び従動輪１４が接地した状態においては、車体６の底板１０ａと床面Ｆとが離間することとなる。このように、フォーク収容部材２１を車体６より取外すのみで、搬送台車１を多様な使用方法に対応させることができる。   As shown in FIG. 8, since the lowest point 13a of the drive wheel 13 and the lowest point 14a of the driven wheel 14 are designed to be positioned below the lower surface 10d of the bottom plate 10a of the vehicle body 6, When the wheel 13 and the driven wheel 14 are grounded, the bottom plate 10a of the vehicle body 6 and the floor surface F are separated from each other. In this way, the transport carriage 1 can be adapted to various usage methods only by removing the fork housing member 21 from the vehicle body 6.

また、搬送台車１は、図示しないリモコン等により操作可能となっており、駆動モータ１２ａの回転数等をカウントして指定された場所までの距離を計算し、指定位置までの移動が可能となっている。更に、図９に示されるように、一方の駆動モータ１２ａを停止させた状態で他方の駆動モータ１２ａを駆動させる等することで旋回移動なども行うことができる。   Further, the transport carriage 1 can be operated by a remote controller (not shown), and the distance to a designated place is calculated by counting the number of rotations of the drive motor 12a, and can be moved to a designated position. ing. Further, as shown in FIG. 9, turning movement and the like can be performed by driving the other drive motor 12 a while one drive motor 12 a is stopped.

一般に、運搬中の搬送台車とフォークとの動きを制限して搬送台車の落下を防止するために、搬送台車における車体の下部にフォーク収容部材を設け、尚且つ収納ラック内と収納ラック外のいずれにおいても利用できる搬送台車を提供する場合、搬送台車の車輪の最下点がフォーク収納部材の最下点より下方に位置するまで車輪を大型化させることも考えられるが、この場合、車輪の大型化した分、車輪の最下点から延びる搬送台車の高さ寸法が高くなってしまう。これに対し搬送台車１は、上述したように、駆動車輪１３の最下点１３ａ及び従動輪１４の最下点１４ａを車体６の底板１０ａの下面１０ｄとフォーク収納部材２１の底板２２，２２の最下点２２ａ，２２ａとの間に位置させるような構成としたことで、収納ラック２内における走行時には、フォーク収容部材２１の一部が走行部４ｂ，４ｂ間に挟まれた空間内に配置されることになり、駆動車輪１３の最下点１３ａ及び従動輪１４の最下点１４ａから延びる搬送台車１の高さを抑え、収納ラック２の収納効率を向上させることができた。   In general, in order to limit the movement of the transport cart and fork during transport and prevent the transport cart from falling, a fork storage member is provided at the lower part of the vehicle body of the transport cart, and either inside or outside the storage rack. In the case of providing a transport carriage that can also be used in the above, it is possible to enlarge the wheel until the lowest point of the wheel of the transport carriage is located below the lowest point of the fork storage member. As a result, the height of the transport carriage extending from the lowest point of the wheel becomes higher. On the other hand, as described above, the transport carriage 1 uses the lowermost point 13a of the driving wheel 13 and the lowermost point 14a of the driven wheel 14 as the lower surface 10d of the bottom plate 10a of the vehicle body 6 and the bottom plates 22 and 22 of the fork storage member 21. By being configured to be positioned between the lowest points 22a and 22a, when traveling in the storage rack 2, a part of the fork accommodating member 21 is disposed in a space sandwiched between the traveling portions 4b and 4b. As a result, the height of the transport carriage 1 extending from the lowest point 13a of the drive wheel 13 and the lowest point 14a of the driven wheel 14 is suppressed, and the storage efficiency of the storage rack 2 can be improved.

以上、本発明の実施例を図面により説明してきたが、具体的な構成はこれら実施例に限られるものではなく、本発明の要旨を逸脱しない範囲における変更や追加があっても本発明に含まれる。   Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

例えば、フォーク収納部材を折りたたみ式としてもよく、この場合、フォーク収納部材の折りたたみ状態において、駆動車輪１３の最下点１３ａ及び従動輪１４の最下点１４ａがフォーク収納部材の最下点より下方となるように設計することにより、フォーク収納部材を着脱する手間を省略し、簡便に搬送台車を収納ラック内と収納ラック外のいずれにも対応させることができる。   For example, the fork storage member may be foldable. In this case, in the folded state of the fork storage member, the lowest point 13a of the drive wheel 13 and the lowest point 14a of the driven wheel 14 are below the lowest point of the fork storage member. By designing so as to be, it is possible to omit the trouble of attaching and detaching the fork storage member, and it is possible to easily cope with the transport carriage both inside and outside the storage rack.

また、物品３及びパレット５を載置可能な載置部４ａと、搬送台車１が走行する走行部４ｂとは、走行レール４，４に一体に設けられる構成に限らず、例えば収納ラック２内に別々に設けられてもよい。更に、載置部４ａ及び走行部４ｂを円形のバー等で構成し、物品３及びパレット５と、搬送台車１の駆動車輪１３及び従動輪１４と、にそれぞれ点接触するようにしてもよい。   In addition, the placement unit 4a on which the article 3 and the pallet 5 can be placed and the traveling unit 4b on which the transport carriage 1 travels are not limited to the configuration provided integrally with the traveling rails 4 and 4, but for example, in the storage rack 2 May be provided separately. Furthermore, the placing part 4a and the traveling part 4b may be formed of circular bars or the like, and may be in point contact with the article 3 and the pallet 5, and the driving wheel 13 and the driven wheel 14 of the transport carriage 1, respectively.

１ 搬送台車
２ 収納ラック
２ａ 間口
３ 物品
４ 走行レール
４ａ 載置部
４ｂ 走行部
５ パレット
６ 車体
７ 載置台
８ 昇降装置
１０ 基部材
１０ａ 底板
１０ｄ 車体底板下面
１１ 側板
１２ 走行装置
１３ 駆動車輪
１３ａ 駆動車輪最下点
１４ 従動輪
１４ａ 従動輪最下点
１７ 昇降駆動部
２１ フォーク収納部材
２２ａ，２２ａ フォーク収納部材底板最下点
２４ａ，２４ａ フォーク収納部材側板端部
２５ａ，２５ａ フォーク収納部材天板端部
３４ 制御部
４４，４４ バッテリー
４４ｄ テーパ面 DESCRIPTION OF SYMBOLS 1 Conveying cart 2 Storage rack 2a Frontage 3 Goods 4 Traveling rail 4a Mounting part 4b Traveling part 5 Pallet 6 Car body 7 Mounting base 8 Lifting device 10 Base member 10a Bottom plate 10d Car body bottom plate lower surface 11 Side plate 12 Driving device 13 Driving wheel 13a Driving wheel Bottom point 14 Driven wheel 14a Driven wheel lowest point 17 Lifting drive unit 21 Fork storage member 22a, 22a Fork storage member bottom plate lowest point 24a, 24a Fork storage member side plate end 25a, 25a Fork storage member top plate end 34 Control unit 44, 44 Battery 44d Tapered surface

Claims (3)

上部に物品を載置可能とする載置部と搬送台車の車輪を走行可能とする走行部とを複数備える収納ラック内を走行する自走式の搬送台車であって、
前記搬送台車は、昇降可能な載置台、前記車輪を有する車体、そして前記車体の底板下面に着脱自在に固定されたフォークリフトのフォーク収容部材、を備え、
前記車輪の最下点を前記車体の底板下面と前記フォーク収容部材の最下点との間に位置させたことを特徴とする搬送台車。 A self-propelled transport carriage that travels in a storage rack that includes a plurality of placement sections that allow an article to be placed on the upper portion and a traveling section that can travel the wheels of the transport carriage.
The transport carriage includes a mounting table that can be moved up and down, a vehicle body having the wheels, and a fork storage member of a forklift that is detachably fixed to a lower surface of a bottom plate of the vehicle body,
A transport cart characterized in that the lowest point of the wheel is positioned between the bottom surface of the bottom plate of the vehicle body and the lowest point of the fork receiving member. 前記フォーク収容部材は、フォークリフトの２本のフォークがそれぞれ収容される断面上向きコ字状部位を前記車体の幅方向両側に一体に備えた構造であることを特徴とする請求項１に記載の搬送台車。   2. The transport according to claim 1, wherein the fork receiving member has a structure in which a U-shaped portion with an upward cross-section in which the two forks of a forklift are respectively stored is integrally provided on both sides in the width direction of the vehicle body. Trolley. 前記フォーク収容部材は、回転対称の形状であり、前記車体の底板に対して固定される固定手段の位置が同様に回転対称に配置されていることを特徴とする請求項１または２に記載の搬送台車。   The said fork accommodating member is a rotationally symmetrical shape, The position of the fixing means fixed with respect to the baseplate of the said vehicle body is arrange | positioned similarly rotationally symmetrically, The Claim 1 or 2 characterized by the above-mentioned. Conveyor cart.
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