JP6329297B1 - Transport cart - Google Patents

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JP6329297B1
JP6329297B1 JP2017080758A JP2017080758A JP6329297B1 JP 6329297 B1 JP6329297 B1 JP 6329297B1 JP 2017080758 A JP2017080758 A JP 2017080758A JP 2017080758 A JP2017080758 A JP 2017080758A JP 6329297 B1 JP6329297 B1 JP 6329297B1
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loading platform
traveling
workpiece
carriage
jack
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JP2018177039A (en
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雅 岡崎
雅 岡崎
静敏 服部
静敏 服部
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Nippon Sharyo Ltd
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Abstract

【課題】載荷台に対するワークの昇降機構と載荷台自体の昇降機構とを簡素化しつつ、安定した姿勢でワークを移載可能に、かつ走行車輪の走行方向を異なる特定方向へ切換え可能に形成された搬送台車を提供する。【解決手段】載荷台1に載置して搬送するワークを昇降可能に形成され、載荷台1に水平回転可能に支持された台車4の走行車輪2の走行方向が異なる特定方向へ切換え可能に形成された搬送台車10である。また、載荷台1には、複数の支持部31が上下方向に移動するジャッキ機構3を備え、各支持部31が上昇してワークを載荷台1から略平行に離間させ、各支持部31が下降して走行車輪2を路面FLから略平行に離間させる。【選択図】 図2[PROBLEMS] To simplify a lifting mechanism of a workpiece with respect to a loading table and a lifting mechanism of the loading table itself, and to allow a workpiece to be transferred in a stable posture and to change a traveling direction of a traveling wheel to a different specific direction. Provide a transport cart. A workpiece that is placed on a loading platform and transported is formed so as to be able to move up and down, and a traveling direction of a traveling wheel of a carriage that is supported by the loading platform so as to be horizontally rotatable can be switched to a different specific direction. It is the formed conveyance cart 10. In addition, the loading platform 1 includes a jack mechanism 3 in which a plurality of support portions 31 move in the vertical direction. Each support portion 31 rises to separate the workpiece from the loading platform 1 substantially in parallel. It descends and the traveling wheel 2 is separated from the road surface FL substantially in parallel. [Selection] Figure 2

Description

本発明は、載荷台に載置して搬送するワークを昇降可能に形成され、かつ走行車輪の走行方向が異なる特定方向へ切換え可能に形成された搬送台車に関する。   The present invention relates to a transport carriage that is formed so as to be able to move up and down a workpiece that is placed on and transported by a loading platform and that can be switched to a specific direction in which the traveling direction of traveling wheels is different.

一般に、長尺なワークを昇降可能に載置して工場内の所定区間を搬送する搬送台車は、ワークを載置する載荷台を長く形成して、載荷台を支持する走行車輪を数多く設けた構造となる。この搬送台車の走行車輪を、操舵可能な操舵用車輪と操舵不能な従動用車輪とで構成すると、複雑な構造となりがちな操舵機構を単純化できるが、搬送台車の操舵に伴う走行スペースが広く必要となり、工場スペースの無駄が生じやすい。そのため、走行車輪の操舵機構を単純化するとともに、操舵に伴う走行スペースの無駄を低減すべく、載荷台に載置して搬送するワークを昇降可能に形成され、かつ走行車輪の走行方向が異なる特定方向へ切換え可能に形成された搬送台車が、検討され、例えば、特許文献1、特許文献2に記載されている。   In general, a transport carriage that places a long workpiece so that it can be moved up and down and conveys a predetermined section in a factory is formed with a long loading platform on which a workpiece is placed, and a number of traveling wheels that support the loading platform are provided. It becomes a structure. If the traveling wheels of the transport carriage are composed of steerable steering wheels and non-steerable follower wheels, the steering mechanism that tends to be complicated can be simplified. This is necessary and is likely to waste factory space. Therefore, in order to simplify the steering mechanism of the traveling wheel and reduce the waste of traveling space associated with the steering, the workpiece that is placed on the loading table and transported can be moved up and down, and the traveling direction of the traveling wheel is different. Conveying carts formed so as to be switchable in a specific direction have been studied and described in, for example, Patent Document 1 and Patent Document 2.

すなわち、特許文献1には、図11に示すように、軌道上を転動する複数の車輪101が向きを一定方向に固定して設けられた移動用架台102と、該移動用架台上に複数のスプリング103を介して揺動可能に支持させた載荷台104と、該載荷台に支持させた複数(3つ)の重量物持上用ジャッキ105と、前記移動用架台102の中央部分に垂直配置に設けられ、該移動用架台に対して水平方向に回転自在に支持された1つの架台持上用ジャッキ106と、該架台持上用ジャッキ106と前記移動用架台102との間に介在された旋回駆動用の油圧シリンダ107とを備え、前記架台持上用ジャッキ106にて前記移動用架台102を軌道上より上昇させた状態で前記油圧シリンダ107を伸縮させることにより該移動用架台102が水平方向に旋回されるようにしてなる方向転換機構付重量物搬送台車100が開示されている。   That is, in Patent Document 1, as shown in FIG. 11, as shown in FIG. 11, a plurality of wheels 101 that roll on a track are fixed in a fixed direction, and a plurality of movement platforms 102 are provided on the movement platforms. The load table 104 supported so as to be swingable via the spring 103, a plurality (three) of heavy load lifting jacks 105 supported by the load table, and the center of the moving table 102 One pedestal lifting jack 106 provided in the arrangement and supported rotatably in the horizontal direction with respect to the moving pedestal, and interposed between the pedestal lifting jack 106 and the moving pedestal 102. And a hydraulic cylinder 107 for turning drive, and the moving base 102 is expanded and contracted by extending the hydraulic cylinder 107 in a state where the moving base 102 is raised from the track by the base lifting jack 106. Direction changing mechanism with heavy transport vehicle 100 comprising so as to be pivoted horizontal direction is disclosed.

また、特許文献2には、図12に示すように、ロール体Rが載置されるべき載置台201と、本ロール体搬送装置200を床に設けられた所定の軌道に沿って移動させるための第1の車輪群202と、本ロール体搬送装置200を床に設けられた、前記所定の軌道とは異なる軌道に沿って移動させるための第2の車輪群203と、本ロール体搬送装置200が前記所定の軌道に沿って移動する際、前記第2の車輪群203を床から離す車輪引上手段と、ロール体Rの受け渡しの際、前記載置台201の床からの距離を変える載置台位置調整手段と、を備え、昇降機構204を共用する昇降手段にて前記車輪引上手段および前記載置台位置調整手段が実現されることを特徴とするロール体搬送装置200が開示されている。   Further, in Patent Document 2, as shown in FIG. 12, in order to move the mounting table 201 on which the roll body R is to be placed and the roll body transporting apparatus 200 along a predetermined track provided on the floor. The first wheel group 202, the second wheel group 203 for moving the roll body transport device 200 along a track different from the predetermined track provided on the floor, and the roll body transport device. When 200 moves along the predetermined trajectory, the wheel lifting means for separating the second wheel group 203 from the floor, and the mounting of changing the distance from the floor of the mounting table 201 when the roll body R is delivered. A roll body conveying device 200 is disclosed, wherein the wheel lifting means and the table position adjusting means are realized by lifting means that share the lifting mechanism 204. .

特開平4−100772号公報Japanese Patent Laid-Open No. 4-100772 特開2012−232825号公報JP2012-232825A

しかしながら、上記特許文献1の方向転換機構付重量物搬送台車100では、載荷台104に支持させた複数(3つ)の重量物持上用ジャッキ105と、移動用架台102の中央部分に垂直配置に設けられ、該移動用架台に対して水平方向に回転自在に支持された1つの架台持上用ジャッキ106とを備えているので、各ジャッキの駆動機構を重複して装備する必要があり、コスト増につながる問題があった。   However, in the heavy-duty conveyance carriage 100 with the direction changing mechanism of Patent Document 1 described above, a plurality (three) of heavy-lifting jacks 105 supported by the loading platform 104 and the central portion of the moving platform 102 are arranged vertically. Provided with one pedestal lifting jack 106 that is rotatably supported in the horizontal direction with respect to the moving pedestal. There was a problem that led to increased costs.

また、上記方向転換機構付重量物搬送台車100では、1つの架台持上用ジャッキ106が、移動用架台102の中央部分に垂直配置に設けられ、該移動用架台に対して水平方向に回転自在に支持されているので、載荷台104に載置された重量物の重心位置と移動用架台102の中央部とが位置ズレしている場合には、架台持上用ジャッキ106の油圧シリンダを伸長させたとき、載荷台104が軌道に対して傾斜して重量物が滑り落ちたり、位置ズレする恐れがあった。   Further, in the heavy-duty conveyance carriage 100 with the direction changing mechanism, one pedestal lifting jack 106 is provided vertically at the central portion of the moving gantry 102 and is rotatable in the horizontal direction with respect to the moving gantry. Therefore, when the position of the center of gravity of the heavy object placed on the loading platform 104 is misaligned with the center of the moving platform 102, the hydraulic cylinder of the platform lifting jack 106 is extended. When doing so, the loading platform 104 may be inclined with respect to the track, causing heavy objects to slide down or to be displaced.

また、特許文献2のロール体搬送装置200では、車輪引上手段および載置台位置調整手段の昇降手段が昇降機構204を共用するので、昇降機構の重複を回避してコスト低減を図ることができるが、ロール体を載置台から離間させる昇降手段ではないので、ロール体の移載手段が別途必要となるという問題があった。   Moreover, in the roll body conveying apparatus 200 of patent document 2, since the raising / lowering means of a wheel raising means and a mounting base position adjustment means share the raising / lowering mechanism 204, duplication of an raising / lowering mechanism can be avoided and cost reduction can be aimed at. However, since the roll body is not an elevating means for separating the roll body from the mounting table, there is a problem that a separate transfer means for the roll body is required.

本発明は、かかる問題を解決するためになされたものであり、載荷台に対するワークの昇降機構と載荷台自体の昇降機構とを簡素化しつつ、安定した姿勢でワークを移載可能に、かつ走行車輪の走行方向を異なる特定方向へ切換え可能に形成された搬送台車を提供することを目的とする。   The present invention has been made to solve such a problem, and it is possible to transfer a workpiece in a stable posture while simplifying the lifting mechanism of the workpiece with respect to the loading table and the lifting mechanism of the loading table itself, and traveling. It is an object of the present invention to provide a transport carriage formed so that the traveling direction of wheels can be switched to different specific directions.

上記目的を達成するため、本発明に係る搬送台車は、以下の構成を備えている。
(1)載荷台に載置して搬送するワークを昇降可能に形成され、前記載荷台に水平回転可能に支持された台車の走行車輪の走行方向が異なる特定方向へ切換え可能に形成された搬送台車であって、
前記載荷台には、複数の支持部が上下方向に移動するジャッキ機構を備え、前記各支持部が上昇して前記ワークを前記載荷台から略平行に離間させ、前記各支持部が下降して前記走行車輪を路面から略平行に離間させることを特徴とする。ここで、「路面」には、走行車輪が走行する床面又は軌道を含む意味である。
In order to achieve the above object, a transport carriage according to the present invention has the following configuration.
(1) Conveyance formed so as to be able to move up and down the workpiece to be placed and conveyed on the loading platform, and to be switched to a specific direction in which the traveling direction of the traveling wheels of the carriage supported on the loading platform so as to be horizontally rotatable is different. A trolley
The loading platform includes a jack mechanism in which a plurality of support portions move in the vertical direction, and the support portions are lifted to separate the workpiece from the loading platform substantially in parallel, and the support portions are lowered. The traveling wheels are separated from the road surface substantially in parallel. Here, the “road surface” means a floor surface or a track on which the traveling wheels travel.

本発明においては、載荷台には、複数の支持部が上下方向に移動するジャッキ機構を備え、各支持部が上昇してワークを載荷台から略平行に離間させ、各支持部が下降して走行車輪を路面から略平行に離間させるので、載荷台に対するワークの昇降機構と載荷台自体の昇降機構とを共通のジャッキ機構によって実現でき、昇降機構の簡素化を図ることができる。   In the present invention, the loading platform is provided with a jack mechanism in which a plurality of support portions move in the vertical direction, and each support portion is raised to separate the workpiece from the loading table substantially in parallel, and each support portion is lowered. Since the traveling wheels are separated from the road surface substantially in parallel, the lifting mechanism of the workpiece with respect to the loading table and the lifting mechanism of the loading table itself can be realized by a common jack mechanism, and the lifting mechanism can be simplified.

また、ジャッキ機構の複数の支持部が上昇してワークを載荷台から略平行に離間させることによって、例えば、その隙間に配置する他の置台(例えば、加工ステーションの受け棚)に、ワークを安定した姿勢で移載することができる。また、ジャッキ機構の複数の支持部が下降して路面から走行車輪を略平行に離間させることによって、例えば、ワークの重心位置と載荷台の中央部位置とが異なる場合でも、載荷台が路面に対して傾斜することなく、安定した姿勢で走行車輪の走行方向を異なる特定方向へ切換えることができる。 In addition, the plurality of support portions of the jack mechanism are lifted so that the work is separated from the loading table substantially in parallel, so that the work can be stabilized on, for example, another table (for example, a receiving shelf of a processing station) arranged in the gap. It can be transferred with the posture. In addition, the plurality of support portions of the jack mechanism are lowered and the traveling wheels are separated from the road surface substantially in parallel.For example, even when the position of the center of gravity of the workpiece and the position of the center portion of the loading table are different, the loading table is placed on the road surface. On the other hand, the traveling direction of the traveling wheel can be switched to a different specific direction with a stable posture without inclining.

よって、本発明によれば、載荷台に対するワークの昇降機構と載荷台自体の昇降機構とを簡素化しつつ、安定した姿勢でワークを移載可能に、かつ走行車輪の走行方向を異なる特定方向へ切換え可能に形成された搬送台車を提供することができる。   Therefore, according to the present invention, it is possible to transfer the workpiece in a stable posture while simplifying the lifting mechanism of the workpiece with respect to the loading platform and the lifting mechanism of the loading platform itself, and the traveling direction of the traveling wheels is changed to different specific directions. It is possible to provide a transport cart formed to be switchable.

(2)(1)に記載された搬送台車において、
前記ジャッキ機構には、昇降用駆動モータと当該昇降用駆動モータの回転力を複数の前記支持部へ伝達する伝達部材とを備えていることを特徴とする。
(2) In the transport carriage described in (1),
The jack mechanism includes an elevating drive motor and a transmission member that transmits a rotational force of the elevating drive motor to the plurality of support portions.

本発明においては、ジャッキ機構には、昇降用駆動モータと当該昇降用駆動モータの回転力を複数の支持部へ伝達する伝達部材とを備えているので、支持部に対する昇降用駆動モータを共通化でき、昇降機構をより一層簡素化させることができる。また、昇降用駆動モータを共通化することによって、当該昇降用駆動モータの回転力を伝達部材によって伝達する複数の支持部における上下移動量を同一化することができる。そのため、安定した姿勢でワークを移載することができ、かつ安定した姿勢で走行車輪の走行方向を異なる特定方向へ切換えることができる。   In the present invention, the jack mechanism includes a lifting drive motor and a transmission member that transmits the rotational force of the lifting drive motor to the plurality of support portions, so that the lift drive motor for the support portion is shared. And the lifting mechanism can be further simplified. Further, by using a common lifting drive motor, it is possible to equalize the vertical movement amounts of the plurality of support portions that transmit the rotational force of the lifting drive motor by the transmission member. Therefore, the workpiece can be transferred with a stable posture, and the traveling direction of the traveling wheel can be switched to a different specific direction with a stable posture.

(3)(2)に記載された搬送台車において、
前記支持部には、ネジジャッキ部が上下方向に形成され、当該ネジジャッキ部が前記伝達部材に形成されたウォームギア部と係合していることを特徴とする。
(3) In the transport carriage described in (2),
The support portion is formed with a screw jack portion in the vertical direction, and the screw jack portion is engaged with a worm gear portion formed on the transmission member.

本発明においては、支持部には、ネジジャッキ部が上下方向に形成され、当該ネジジャッキ部が前記伝達部材に形成されたウォームギア部と係合しているので、小さな駆動力でも載荷台を持ち上げることができる。そのため、昇降用駆動モータの小型化を図ることができ、その結果、ジャッキ機構の簡素化も図ることができる。   In the present invention, the screw jack portion is formed in the vertical direction on the support portion, and the screw jack portion is engaged with the worm gear portion formed on the transmission member, so that the loading table can be lifted even with a small driving force. be able to. As a result, the lifting drive motor can be reduced in size, and as a result, the jack mechanism can be simplified.

(4)(3)に記載された搬送台車において、
前記支持部の下端部には、前記路面と当接する下当接座の外周に起立する堰部を形成したことを特徴とする。
(4) In the transport cart described in (3),
In the lower end portion of the support portion, a weir portion standing on the outer periphery of the lower contact seat that contacts the road surface is formed.

本発明においては、支持部の下端部には、路面と当接する下当接座の外周に起立する堰部を形成したので、支持部を上下動させるネジジャッキ部から潤滑油等が垂れてきても、下当接座の外周に起立する堰部によって、路面への油飛散を防止することができる。なお、支持部のネジジャッキ部周囲には、蛇腹状の油飛散防止カバーを装着することもできる。   In the present invention, the lower end portion of the support portion is formed with a weir portion standing on the outer periphery of the lower contact seat that contacts the road surface, so that lubricating oil or the like hangs down from the screw jack portion that moves the support portion up and down. In addition, oil scattering on the road surface can be prevented by the weir portion standing on the outer periphery of the lower abutment seat. An accordion-like oil scattering prevention cover can be mounted around the screw jack portion of the support portion.

(5)(1)乃至(4)のいずれか1つに記載された搬送台車において、
前記ジャッキ機構は、当該搬送台車が走行停止又は駐車する際に、前記支持部を路面と当接する駐車位置に移動させることを特徴とする。
(5) In the transport carriage described in any one of (1) to (4),
The jack mechanism is characterized in that when the transport carriage stops running or parks, the support portion is moved to a parking position where it abuts against a road surface.

本発明においては、ジャッキ機構は、搬送台車が走行停止又は駐車する際に、支持部を路面と当接する駐車位置に移動させるので、搬送台車の不意な移動を防止する台車制動機能を付加することができる。また、搬送台車にワークを積載するときに、載荷台の不意な傾きを防止する台車姿勢制御機能を付加することもできる。したがって、ジャッキ機構は、台車制動機能や台車姿勢制御機能等を備えた台車規制手段として用いることもできる。   In the present invention, the jack mechanism moves the support portion to the parking position where it abuts against the road surface when the transport carriage is stopped or parked, so that a cart braking function is added to prevent the transport carriage from moving unexpectedly. Can do. Further, when loading a work on the transport carriage, it is possible to add a carriage attitude control function for preventing an unexpected inclination of the loading stage. Therefore, the jack mechanism can also be used as a cart regulating means having a cart braking function, a cart attitude control function, and the like.

(6)(1)乃至(5)のいずれか1つに記載された搬送台車において、
前記支持部は、前記台車の外縁回転軌跡に隣接した位置に配置されていることを特徴とする。
(6) In the transport cart described in any one of (1) to (5),
The support portion is arranged at a position adjacent to an outer edge rotation locus of the carriage.

本発明においては、支持部は、台車の外縁回転軌跡に隣接した位置に配置されているので、重量がかさむ台車を隣接した位置で支持部が支持しながら、載荷台をより安定した姿勢で持ち上げることができる。そのため、長尺な搬送台車であっても、載荷台の長手方向の剛性を必要以上により高める必要がなく、搬送台車の軽量化を図ることができ、その結果、ジャッキ機構の簡素化も図ることができる。   In the present invention, since the support portion is disposed at a position adjacent to the outer edge rotation locus of the carriage, the loading base is lifted in a more stable posture while the support section supports the heavy truck. be able to. Therefore, even if it is a long conveying cart, it is not necessary to increase the longitudinal rigidity of the loading platform more than necessary, and the weight of the conveying cart can be reduced, and as a result, the jack mechanism can be simplified. Can do.

本発明によれば、載荷台に対するワークの昇降機構と載荷台自体の昇降機構とを簡素化しつつ、安定した姿勢でワークを移載可能に、かつ走行車輪の走行方向を異なる特定方向へ切換え可能に形成された搬送台車を提供することができる。   According to the present invention, it is possible to transfer a workpiece in a stable posture and to change the traveling direction of the traveling wheel to a different specific direction while simplifying the lifting mechanism of the workpiece with respect to the loading platform and the lifting mechanism of the loading platform itself. The conveyance trolley | bogie formed in can be provided.

本発明の実施形態に係る搬送台車の概略平面図である。It is a schematic plan view of the conveyance trolley | bogie which concerns on embodiment of this invention. 図1に示す搬送台車の概略側面図である。It is a schematic side view of the conveyance trolley shown in FIG. 図1に示すジャッキ機構のA部詳細平面図である。FIG. 2 is a detailed plan view of a part A of the jack mechanism shown in FIG. 1. 図3に示すB矢視図である。It is a B arrow view shown in FIG. 図1に示す搬送台車の概略正面図である。It is a schematic front view of the conveyance trolley shown in FIG. 図1に示す台車の詳細平面図である。It is a detailed top view of the trolley | bogie shown in FIG. 図6に示すC矢視図である。It is C arrow line view shown in FIG. 図6に示すD−D断面図である。It is DD sectional drawing shown in FIG. 図6に示すE−E断面図である。It is EE sectional drawing shown in FIG. 図1に示す搬送台車の動作フロー図(一例)である。It is an operation | movement flowchart (an example) of the conveyance trolley shown in FIG. 特許文献1に記載された方向転換機構付重量物搬送台車の部分縦側面図である。It is a partial vertical side view of the heavy-duty conveyance cart with a direction change mechanism described in Patent Document 1. 特許文献2に記載されたロール体搬送装置の側面図である。(a)は、走行状態にあるロール体搬送装置の側面図である。(b)は、横行状態にあるロール体搬送装置の側面図である。(c)は、受渡し状態にあるロール体搬送装置の側面図である。It is a side view of the roll body conveying apparatus described in patent document 2. (A) is a side view of the roll body conveying apparatus in a running state. (B) is a side view of the roll conveyance device in a traversing state. (C) is a side view of the roll conveyance device in a delivery state.

次に、本発明の実施形態に係る搬送台車について、図面を参照しながら詳細に説明する。具体的には、本実施形態に係る搬送台車の各構成を説明した上で、本搬送台車の動作フローの一例を説明する。   Next, a transport cart according to an embodiment of the present invention will be described in detail with reference to the drawings. Specifically, after describing each configuration of the transport cart according to the present embodiment, an example of an operation flow of the transport cart will be described.

<本搬送台車の構造>
まず、本実施形態に係る搬送台車の各構成について、図1〜図9を用いて説明する。図1、本発明の実施形態に係る搬送台車の概略平面図を示す。図2に、図1に示す搬送台車の概略側面図を示す。図3に、図1に示すジャッキ機構のA部詳細平面図を示す。図4に、図3に示すB矢視図を示す。図5に、図1に示す搬送台車の概略正面図を示す。図6に、図1に示す台車の詳細平面図を示す。図7に、図6に示すC矢視図を示す。図8に、図6に示すD−D断面図を示す。図9に、図6に示すE−E断面図を示す。
<Structure of this transport cart>
First, each structure of the conveyance trolley | bogie which concerns on this embodiment is demonstrated using FIGS. FIG. 1 shows a schematic plan view of a transport cart according to an embodiment of the present invention. FIG. 2 shows a schematic side view of the transport carriage shown in FIG. FIG. 3 is a detailed plan view of a portion A of the jack mechanism shown in FIG. FIG. 4 is a view taken in the direction of arrow B shown in FIG. FIG. 5 shows a schematic front view of the transport carriage shown in FIG. FIG. 6 shows a detailed plan view of the carriage shown in FIG. FIG. 7 shows a C arrow view shown in FIG. FIG. 8 is a cross-sectional view taken along the line DD shown in FIG. FIG. 9 is a cross-sectional view taken along line EE shown in FIG.

図1〜図5に示すように、本実施形態に係る搬送台車10は、載荷台1に載置して搬送するワークWを昇降可能に形成され、載荷台1に水平回転可能に支持された台車4の走行車輪2の走行方向が異なる特定方向(例えば、図1に示す前後方向と左右方向)へ切換え可能に形成された搬送台車である。本搬送台車10は、走行車輪2の走行方向を切換えることによって、異なる特定方向へ直線走行する。ここでは、前後方向は、搬送台車10の長手方向とも言い、左右方向は、搬送台車10の幅方向とも言う。   As shown in FIGS. 1 to 5, the transport cart 10 according to the present embodiment is formed so as to be able to move up and down the workpiece W placed and transported on the loading table 1, and is supported by the loading table 1 so as to be horizontally rotatable. The carriage 4 is formed so as to be switchable in a specific direction (for example, the front-rear direction and the left-right direction shown in FIG. 1) in which the traveling directions of the traveling wheels 2 of the carriage 4 are different. The transport cart 10 travels linearly in different specific directions by switching the travel direction of the travel wheels 2. Here, the front-rear direction is also referred to as the longitudinal direction of the transport carriage 10, and the left-right direction is also referred to as the width direction of the transport carriage 10.

また、載荷台1には、複数(ここでは、22個)の支持部31が、図2に示す上下方向に移動するジャッキ機構3を備え、各支持部31が上昇してワークWを載荷台1から略平行に離間させ、各支持部31が下降して走行車輪2を床面(路面)FLから略平行に離間させるように構成されている。各支持部31の上端部には、ワークWと当接する上当接座317が形成され、各支持部31が上昇してワークWを載荷台1から略平行に離間させた位置(ワーク持上げ位置)で、ワークWを加工ステーション(例えば、受け棚KS)に移載することができる。また、各支持部31の下端部には、床面FLと当接する下当接座312が形成され、各支持部31が下降して走行車輪2を床面FLから略平行に離間させた位置(台車持上げ位置)で、台車4の走行車輪2の走行方向を切換えることができる。上当接座317及び下当接座312は、平坦な円形座部を構成する。   Further, the loading platform 1 includes a jack mechanism 3 in which a plurality (22 in this case) of supporting portions 31 move in the vertical direction shown in FIG. 2, and each supporting portion 31 moves up to load the work W. 1, the support portions 31 are lowered so that the traveling wheels 2 are separated from the floor surface (road surface) FL substantially in parallel. An upper abutment seat 317 that abuts against the workpiece W is formed at the upper end portion of each support portion 31, and each support portion 31 is lifted to move the workpiece W away from the loading table 1 in a substantially parallel position (work lifting position). Thus, the workpiece W can be transferred to a processing station (for example, the receiving shelf KS). In addition, a lower abutment seat 312 that abuts the floor surface FL is formed at the lower end of each support portion 31, and each support portion 31 descends to move the traveling wheel 2 away from the floor surface FL substantially in parallel. The traveling direction of the traveling wheel 2 of the carriage 4 can be switched at (the carriage lifting position). The upper contact seat 317 and the lower contact seat 312 constitute a flat circular seat portion.

また、載荷台1は、長尺なワークWを積載できるように、前後方向に長い長尺状枠部材と左右方向に短い短尺状枠部材とを井桁状に連結し、外周を同枠部材で包囲するように形成された矩形状枠体である。長尺状枠部材と短尺状枠部材とによって囲まれた井桁状空間(2箇所)には、電源用の蓄電池5が収納されている。ジャッキ機構3の支持部31は、載荷台1の左右方向両端部に位置し、重量がかさむ走行車輪2及び蓄電池5に対応しつつ、載荷台1の前端部から後端部まで前後方向に沿って略等間隔に配置されている。ジャッキ機構3は、前後方向で4つに分割し、左右対称で別々に配置されている。したがって、本搬送台車10には、合計8つのジャッキ機構3を備えている。また、ジャッキ機構3は、搬送台車10が走行停止又は駐車する際に、支持部31を床面FLと当接する位置(駐車位置)に移動させ、搬送台車10の不意な移動や傾斜を防止する台車規制手段を兼用している。   In addition, the loading platform 1 connects a long frame member that is long in the front-rear direction and a short frame member that is short in the left-right direction so that a long work W can be loaded, and the outer periphery is connected with the same frame member. It is a rectangular frame formed so as to surround it. A storage battery 5 for power supply is accommodated in a cross-girder space (two places) surrounded by the long frame member and the short frame member. The support portions 31 of the jack mechanism 3 are located at both left and right ends of the loading platform 1 and correspond to the heavy running wheels 2 and storage batteries 5, along the longitudinal direction from the front end portion to the rear end portion of the loading platform 1. Are arranged at approximately equal intervals. The jack mechanism 3 is divided into four parts in the front-rear direction, and is arranged separately symmetrically. Therefore, the transport cart 10 includes a total of eight jack mechanisms 3. Further, the jack mechanism 3 moves the support portion 31 to a position (parking position) where it comes into contact with the floor surface FL when the transport cart 10 stops traveling or parks, thereby preventing the transport cart 10 from being unexpectedly moved or inclined. It also serves as a cart regulation means.

また、各ジャッキ機構3には、昇降用駆動モータ32と当該昇降用駆動モータ32の回転力を複数の支持部31へ伝達する伝達部材33とを、それぞれ備えている。昇降用駆動モータ32は、載荷台1の左右方向両端部の下方にその取付部が吊り下げて固定され、その駆動軸を前後方向へ向けて配置されている。昇降用駆動モータ32の駆動軸は、軸連結具34を介して前後方向へ向けて水平状に延伸する伝達部材33と連結されている。伝達部材33の昇降用駆動モータ32と反対側の終端部は、載荷台1の下端面12に固定された固定軸受け具36に支持されている。   Each jack mechanism 3 includes an elevating drive motor 32 and a transmission member 33 that transmits the rotational force of the elevating drive motor 32 to the plurality of support portions 31. The raising / lowering drive motor 32 has its mounting part suspended and fixed below the left and right ends of the loading platform 1 and its drive shaft is disposed in the front-rear direction. The drive shaft of the elevating drive motor 32 is connected to a transmission member 33 that extends horizontally in the front-rear direction via a shaft connector 34. A terminal portion of the transmission member 33 opposite to the lifting drive motor 32 is supported by a fixed bearing 36 fixed to the lower end surface 12 of the loading table 1.

ここでは、昇降用駆動モータ32は、左右で各4つ備え、各昇降用駆動モータ32が同期して作動するように制御されている。搬送台車10を走行させる際には、各昇降用駆動モータ32を作動させることによって、各支持部31の上当接座317が載荷台1の上端面11から突出せず、また、各支持部31の下当接座312が床面FLと当接しない位置(格納位置)、又は前述したワーク持上げ位置に各支持部31を移動させる。なお、載荷台1から下方へ垂設された支持片315には、支持部31の上下方向の位置(ワーク持上げ位置、格納位置、駐車位置、台車持上げ位置)を検出する非接触センサ316が設けられている。   Here, four elevating drive motors 32 are provided on the left and right, respectively, and the elevating drive motors 32 are controlled to operate in synchronization. When the transport carriage 10 is run, by operating each lifting drive motor 32, the upper contact seat 317 of each support portion 31 does not protrude from the upper end surface 11 of the loading table 1, and each support portion 31. Each support portion 31 is moved to a position where the lower contact seat 312 does not contact the floor surface FL (storage position) or the workpiece lifting position described above. The support piece 315 suspended downward from the loading table 1 is provided with a non-contact sensor 316 that detects the vertical position of the support portion 31 (work lifting position, storage position, parking position, carriage lifting position). It has been.

また、伝達部材33には、支持部31と交差する位置にウォームギア部331が形成されている。また、支持部31には、ネジジャッキ部311が上下方向に形成され、当該ネジジャッキ部311が伝達部材33に形成されたウォームギア部331と係合している。ネジジャッキ部311とウォームギア部331とは、載荷台1の左右方向両端部の下端面12に装着されたギヤボックス35内で係合している。支持部31には、ネジジャッキ部311を包囲するように蛇腹状の油飛散防止カバー314がギヤボックス35の上方と下方に配設されている。また、支持部31の下端部には、床面FLへの油飛散を防止すべく、下当接座312の外周に起立する堰部313が形成されている。   Further, a worm gear portion 331 is formed in the transmission member 33 at a position intersecting with the support portion 31. Further, a screw jack portion 311 is formed on the support portion 31 in the vertical direction, and the screw jack portion 311 is engaged with a worm gear portion 331 formed on the transmission member 33. The screw jack portion 311 and the worm gear portion 331 are engaged in a gear box 35 attached to the lower end surface 12 at both left and right end portions of the loading platform 1. An accordion-shaped oil splash prevention cover 314 is disposed on the support portion 31 above and below the gear box 35 so as to surround the screw jack portion 311. In addition, a dam portion 313 that stands on the outer periphery of the lower contact seat 312 is formed at the lower end portion of the support portion 31 in order to prevent oil scattering to the floor surface FL.

また、図6〜図9に示すように、支持部31は、載荷台1に水平回転可能に支持された台車4の外縁回転軌跡に隣接した位置に配置されている。ここで、台車4は、搬送台車10の前後方向に沿って略等間隔で複数(例えば、4つ)設置されている(図1、図2を参照)。また、台車4には、前後に配置された走行車輪2を左右連結する車軸21を軸支する車輪用枠部材41と、車輪用枠部材41と載荷台1とを水平回転可能に支持する環状転動部材42と、環状転動部材42の外輪421を回転させる回転用駆動モータ43と、載荷台1と係合して走行車輪2の走行方向を異なる特定方向に固定するロック装置44とを備えている。車輪用枠部材41の前後には、車軸21と係合する歯車部23を介して連結する走行用駆動モータ22が配設されている。   6-9, the support part 31 is arrange | positioned in the position adjacent to the outer periphery rotation locus | trajectory of the trolley | bogie 4 supported by the loading platform 1 so that horizontal rotation is possible. Here, a plurality of (for example, four) trolleys 4 are installed at substantially equal intervals along the front-rear direction of the transport trolley 10 (see FIGS. 1 and 2). Further, the carriage 4 has a wheel frame member 41 that pivotally supports an axle 21 that couples the traveling wheels 2 arranged at the front and rear, and a ring that supports the wheel frame member 41 and the loading table 1 so as to be horizontally rotatable. A rolling member 42, a rotation drive motor 43 that rotates the outer ring 421 of the annular rolling member 42, and a lock device 44 that engages the loading table 1 and fixes the traveling direction of the traveling wheel 2 in different specific directions. I have. In front of and behind the wheel frame member 41, a driving motor 22 for traveling that is connected via a gear portion 23 that engages with the axle 21 is disposed.

また、回転用駆動モータ43は、車輪用枠部材41に固定されている。環状転動部材42の外輪421は、載荷台1に固定され、環状転動部材42の内輪422は、車輪用枠部材41に固定されている。回転用駆動モータ43の駆動軸には、ピニオン歯432が装着され、ピニオン歯432は外輪421の外周に形成されたリング状ラック歯と係合している。外輪421と内輪422とは、ボールベアリング423を介して連結されている。回転用駆動モータ43が作動すると、ピニオン歯432が所定の向きに回転し、ピニオン歯432の回転に伴って外輪421が回転し、車輪用枠部材41に軸支された走行車輪2の走行方向を切換えることができる。   The rotation drive motor 43 is fixed to the wheel frame member 41. An outer ring 421 of the annular rolling member 42 is fixed to the loading table 1, and an inner ring 422 of the annular rolling member 42 is fixed to the wheel frame member 41. Pinion teeth 432 are attached to the drive shaft of the rotation drive motor 43, and the pinion teeth 432 are engaged with ring-shaped rack teeth formed on the outer periphery of the outer ring 421. The outer ring 421 and the inner ring 422 are connected via a ball bearing 423. When the rotation drive motor 43 is operated, the pinion teeth 432 rotate in a predetermined direction, and the outer ring 421 rotates along with the rotation of the pinion teeth 432, and the traveling direction of the traveling wheel 2 that is pivotally supported by the wheel frame member 41. Can be switched.

また、載荷台1には、走行車輪2の走行方向を検出する2つの方向検出スイッチ451、453が異なる位置に装着されている。車輪用枠部材41には、走行車輪2の走行方向が搬送台車10の前後方向である通常走行時に、一方の方向検出スイッチ451に当接する第1被検出ブロック452と、走行車輪2の走行方向が搬送台車10の左右方向である90度旋回時に他方の方向検出スイッチ453に当接する第2被検出ブロック454とが異なる位置に装着されている。各方向検出スイッチ451、453からの出力を受けて、回転用駆動モータ43は、作動・停止する。   In addition, two direction detection switches 451 and 453 for detecting the traveling direction of the traveling wheel 2 are mounted on the loading platform 1 at different positions. The wheel frame member 41 includes a first detected block 452 that comes into contact with one of the direction detection switches 451 and a traveling direction of the traveling wheel 2 during normal traveling in which the traveling direction of the traveling wheel 2 is the front-rear direction of the transport carriage 10. Is mounted at a different position from the second detected block 454 that comes into contact with the other direction detection switch 453 when the transport cart 10 turns 90 degrees which is the left-right direction. In response to the outputs from the direction detection switches 451 and 453, the rotation drive motor 43 is activated and stopped.

また、ロック装置44は、車輪用枠部材41に固定されている。ロック装置44は、上下方向に伸縮する電動シリンダ441と、電動シリンダ441のロッド部に連結された円柱状のロックピン442と、載荷台1に固定されロックピン442が係脱するブッシュ部443とを備えている。走行車輪2の走行方向が搬送台車10の前後方向である通常走行時と、走行車輪2の走行方向が搬送台車10の左右方向である90度旋回時とにおいて、電動シリンダ441が伸長し、ロックピン442がブッシュ部443に係合する。これによって、搬送台車10は、異なる特定方向へ直線状に走行することができる。   The locking device 44 is fixed to the wheel frame member 41. The lock device 44 includes an electric cylinder 441 that expands and contracts in the vertical direction, a columnar lock pin 442 that is connected to a rod portion of the electric cylinder 441, and a bush portion 443 that is fixed to the loading table 1 and that engages and disengages the lock pin 442. It has. The electric cylinder 441 extends and locks during normal traveling when the traveling direction of the traveling wheel 2 is the front-rear direction of the transport carriage 10 and during 90-degree turning when the traveling direction of the traveling wheel 2 is the left-right direction of the transport carriage 10. The pin 442 engages with the bush portion 443. Thereby, the transport cart 10 can travel linearly in different specific directions.

<本搬送台車の動作フロー>
次に、本搬送台車の動作フローの一例を、図10を用いて説明する。図10に、図1に示す搬送台車の動作フロー図(一例)を示す。この一例は、焼成部品である長尺状のワークWを、工場内のワーク積載ステーションで載荷台1に積載して、途中の中間位置で走行方向を切換えた後、加工ステーションへ搬送し、その後、ワーク積載ステーションへ空荷で帰還する例である。
<Operation flow of this transport cart>
Next, an example of the operation flow of the transport cart will be described with reference to FIG. FIG. 10 shows an operation flow diagram (an example) of the transport carriage shown in FIG. In this example, a long workpiece W, which is a fired part, is loaded on the loading platform 1 at a workpiece loading station in the factory, and the traveling direction is switched at an intermediate position in the middle, and then conveyed to the processing station. This is an example of returning to the work loading station with an empty load.

図10に示すように、はじめに、ワーク積載ステーションで載荷台1にワークWを積載し、走行車輪2の走行方向を切換える中間位置まで搬送台車10を移動させる(ステップ:S1)。ワークWは、その長手方向と載荷台1の前後方向とが一致するように積載する。搬送台車10をワーク積載ステーションから中間位置まで移動させる際は、ロック装置44によって走行車輪2の走行方向を左右方向(90度旋回時)に固定している。   As shown in FIG. 10, first, the work W is loaded on the loading platform 1 at the workpiece loading station, and the transport carriage 10 is moved to an intermediate position where the traveling direction of the traveling wheel 2 is switched (step: S1). The workpiece W is loaded so that the longitudinal direction thereof coincides with the front-rear direction of the loading table 1. When the transport carriage 10 is moved from the workpiece loading station to the intermediate position, the traveling direction of the traveling wheel 2 is fixed in the left-right direction (when turning 90 degrees) by the lock device 44.

次に、中間位置で搬送台車10を停止後、ジャッキ機構3の支持部31を台車持上げ位置まで下降させて、走行車輪2を床面FLから離間させる(ステップ:S2)。その後、台車4のロックピン442を下降してブッシュ部443との係合を解除後、すべての走行車輪2の走行方向を前後方向(通常走行時)へ方向切換えした上で、ロックピン442を上昇してブッシュ部443に係合させる(ステップ:S3)。   Next, after stopping the conveyance carriage 10 at the intermediate position, the support portion 31 of the jack mechanism 3 is lowered to the carriage lifting position, and the traveling wheel 2 is separated from the floor surface FL (step: S2). Thereafter, the lock pin 442 of the carriage 4 is lowered to release the engagement with the bush portion 443, and then the traveling direction of all the traveling wheels 2 is switched to the front-rear direction (during normal traveling), and then the locking pin 442 is moved. Ascend and engage with the bush portion 443 (step: S3).

次に、ジャッキ機構3の支持部31を格納位置まで上昇させ、床面FLに接地した走行車輪2を作動させて、搬送台車10を加工ステーション(焼成炉)手前へ移動させる(ステップ:S4)。そして、加工ステーション手前で搬送台車10を停止後、ジャッキ機構3の支持部31を上昇させワークWを載荷台1から略平行に離間させる(ステップ:S5)。   Next, the support portion 31 of the jack mechanism 3 is raised to the retracted position, and the traveling wheel 2 grounded on the floor surface FL is operated to move the transport carriage 10 to the front of the processing station (firing furnace) (step: S4). . And after stopping the conveyance trolley | bogie 10 in front of a processing station, the support part 31 of the jack mechanism 3 is raised and the workpiece | work W is spaced apart from the loading base 1 substantially parallel (step: S5).

次に、走行車輪2を作動させて搬送台車10を加工ステーション内へ前進させ、ワークWと載荷台1との隙間に受け棚KSを挿入させる(ステップ:S6)。受け棚KSは、ジャッキ機構3の支持部31と干渉しないように、搬送台車10の左右両側に配置されている(図5を参照)。その後、ジャッキ機構3の支持部31を格納位置まで下降させて、ワークWを加工ステーションの受け棚KSへ移載する(ステップ:S7)。   Next, the traveling wheel 2 is operated to advance the transport carriage 10 into the processing station, and the receiving shelf KS is inserted into the gap between the workpiece W and the loading platform 1 (step: S6). The receiving shelves KS are disposed on both the left and right sides of the transport carriage 10 so as not to interfere with the support portion 31 of the jack mechanism 3 (see FIG. 5). Thereafter, the support portion 31 of the jack mechanism 3 is lowered to the storage position, and the workpiece W is transferred to the receiving shelf KS of the processing station (step: S7).

次に、空荷となった搬送台車10を後退させて中間位置へ移動させる(ステップ:S8)。この時の走行車輪2の走行方向は、搬送台車10の前後方向(通常走行時)である。次に、搬送台車10を中間位置で停止後、ジャッキ機構3の支持部31を台車持上げ位置まで下降させ、走行車輪2を床面FLから離間させる(ステップ:S9)。その後、台車4のロックピン442を下降してブッシュ部443との係合を解除後、すべての走行車輪2の走行方向を左右方向(90度旋回時)へ方向切換えした上で、ロックピン442を上昇してブッシュ部443に係合させる(ステップ:S10)。   Next, the transport carriage 10 that has become empty is moved backward to an intermediate position (step: S8). The traveling direction of the traveling wheel 2 at this time is the front-rear direction of the transport carriage 10 (during normal traveling). Next, after the conveyance carriage 10 is stopped at the intermediate position, the support portion 31 of the jack mechanism 3 is lowered to the carriage lifting position, and the traveling wheel 2 is separated from the floor surface FL (step: S9). Thereafter, the lock pin 442 of the carriage 4 is lowered to release the engagement with the bush portion 443, and then the traveling direction of all the traveling wheels 2 is switched to the left and right direction (when turning 90 degrees), and then the locking pin 442 Is raised and engaged with the bush portion 443 (step: S10).

次に、ジャッキ機構3の支持部31を格納位置まで上昇させ、搬送台車10を中間位置からワーク積載ステーションへ移動させる(ステップ:S11)。予定のワークWを搬送終了後には、ジャッキ機構3の支持部31を床面FLと当接する駐車位置まで下降させる。以上のように、本搬送台車10は、載荷台1に対するワークWの昇降機構と載荷台1自体の昇降機構とを簡素化しつつ、安定した姿勢でワークWを移載でき、かつ安定した姿勢で走行車輪2の走行方向を異なる特定方向へ切換えることができる。   Next, the support portion 31 of the jack mechanism 3 is raised to the storage position, and the transport carriage 10 is moved from the intermediate position to the workpiece loading station (step: S11). After the scheduled work W is transported, the support portion 31 of the jack mechanism 3 is lowered to the parking position where it comes into contact with the floor surface FL. As described above, the transport cart 10 can transfer the workpiece W in a stable posture while simplifying the lifting mechanism of the workpiece W relative to the loading table 1 and the lifting mechanism of the loading table 1 itself, and in a stable posture. The traveling direction of the traveling wheel 2 can be switched to a different specific direction.

<作用効果>
以上、詳細に説明した本実施形態に係る搬送台車10によれば、載荷台1には、複数の支持部31が上下方向に移動するジャッキ機構3を備え、各支持部31が上昇してワークWを載荷台1から略平行に離間させ、各支持部31が下降して走行車輪2を床面(路面)FLから略平行に離間させるので、載荷台1に対するワークWの昇降機構と載荷台1自体の昇降機構とを共通のジャッキ機構3によって実現でき、昇降機構の簡素化を図ることができる。
<Effect>
As described above, according to the transport carriage 10 according to the present embodiment described in detail, the loading platform 1 includes the jack mechanism 3 in which the plurality of support portions 31 move in the vertical direction, and the support portions 31 are lifted to raise the workpiece. Since W is separated from the loading table 1 substantially in parallel and each support portion 31 is lowered to separate the traveling wheel 2 from the floor surface (road surface) FL, the lifting mechanism of the workpiece W with respect to the loading table 1 and the loading table. One lifting mechanism can be realized by a common jack mechanism 3, and the lifting mechanism can be simplified.

また、ジャッキ機構3の複数の支持部31が上昇してワークWを載荷台1から略平行に離間させることによって、例えば、その隙間に配置する他の置台(例えば、加工ステーションの受け棚KS)に、安定した姿勢で移載することができる。また、ジャッキ機構3の複数の支持部31が下降して床面(路面)FLから走行車輪2を略平行に離間させることによって、例えば、ワークWの重心位置と載荷台1の中央部位置とが異なる場合でも、載荷台1が床面(路面)FLに対して傾斜することなく、安定した姿勢で走行車輪2の走行方向を異なる特定方向へ切換えることができる。   Further, when the plurality of support portions 31 of the jack mechanism 3 are lifted to separate the workpiece W from the loading table 1 in a substantially parallel manner, for example, another table (for example, a receiving shelf KS of a processing station) disposed in the gap. In addition, it can be transferred with a stable posture. Further, when the plurality of support portions 31 of the jack mechanism 3 are lowered and the traveling wheels 2 are separated from the floor surface (road surface) FL substantially in parallel, for example, the position of the center of gravity of the workpiece W and the position of the center portion of the loading platform 1 are Even if they are different, the traveling direction of the traveling wheel 2 can be switched to a different specific direction with a stable posture without the loading platform 1 being inclined with respect to the floor surface (road surface) FL.

よって、本実施形態によれば、載荷台1に対するワークWの昇降機構と載荷台1自体の昇降機構とを簡素化しつつ、安定した姿勢でワークWを移載可能に、かつ走行車輪2の走行方向を異なる特定方向へ切換え可能に形成された搬送台車10を提供することができる。   Therefore, according to the present embodiment, the workpiece W can be transferred in a stable posture and the traveling wheel 2 can travel while simplifying the lifting mechanism of the workpiece W relative to the loading platform 1 and the lifting mechanism of the loading platform 1 itself. It is possible to provide the transport carriage 10 formed so that the direction can be switched to different specific directions.

また、本実施形態によれば、ジャッキ機構3には、昇降用駆動モータ32と当該昇降用駆動モータ32の回転力を複数の支持部31へ伝達する伝達部材33とを備えているので、支持部31に対する昇降用駆動モータ32を共通化でき、昇降機構をより一層簡素化させることができる。また、昇降用駆動モータ32を共通化することによって、当該昇降用駆動モータ32の回転力を伝達部材33によって伝達する複数の支持部31における上下移動量を同一化することができる。そのため、安定した姿勢でワークWを移載することができ、かつ安定した姿勢で走行車輪2の走行方向を異なる特定方向へ切換えることができる。   Further, according to the present embodiment, the jack mechanism 3 includes the elevating drive motor 32 and the transmission member 33 that transmits the rotational force of the elevating drive motor 32 to the plurality of support portions 31. The raising / lowering drive motor 32 with respect to the part 31 can be shared, and the raising / lowering mechanism can be further simplified. Further, by using the lifting drive motor 32 in common, the vertical movement amounts of the plurality of support portions 31 that transmit the rotational force of the lifting drive motor 32 by the transmission member 33 can be made the same. Therefore, the workpiece W can be transferred with a stable posture, and the traveling direction of the traveling wheel 2 can be switched to a different specific direction with a stable posture.

また、本実施形態によれば、支持部31には、ネジジャッキ部311が上下方向に形成され、当該ネジジャッキ部311が伝達部材33に形成されたウォームギア部331と係合しているので、小さな駆動力でも載荷台1を持ち上げることができる。そのため、昇降用駆動モータ32の小型化を図ることができ、その結果、ジャッキ機構3の簡素化も図ることができる。   Further, according to the present embodiment, the screw jack portion 311 is formed on the support portion 31 in the vertical direction, and the screw jack portion 311 is engaged with the worm gear portion 331 formed on the transmission member 33. The loading platform 1 can be lifted even with a small driving force. Therefore, the drive motor 32 for raising / lowering can be reduced in size, and as a result, the jack mechanism 3 can be simplified.

また、本実施形態によれば、支持部31の下端部には、床面(路面)FLと当接する下当接座312の外周に起立する堰部313を形成したので、支持部31を上下動させるネジジャッキ部311から潤滑油等が垂れてきても、下当接座312の外周に起立する堰部313によって、床面FLへの油飛散を防止することができる。なお、支持部31のネジジャッキ部311周囲には、蛇腹状の油飛散防止カバー314を装着することによって、潤滑油等の飛散を更に低減することもできる。   Further, according to the present embodiment, the lower end portion of the support portion 31 is formed with the weir portion 313 standing on the outer periphery of the lower contact seat 312 that contacts the floor surface (road surface) FL. Even when lubricating oil or the like drips from the screw jack portion 311 to be moved, the dam portion 313 standing on the outer periphery of the lower abutment seat 312 can prevent oil scattering to the floor surface FL. In addition, around the screw jack part 311 of the support part 31, the scattering of lubricating oil etc. can further be reduced by attaching the bellows-like oil scattering prevention cover 314. FIG.

また、本実施形態によれば、ジャッキ機構3は、搬送台車10が走行停止又は駐車する際に、支持部31を床面FLと当接する駐車位置に移動させるので、搬送台車10の不意な移動を防止する台車制動機能を付加することができる。また、搬送台車10にワークWを積載するときに、載荷台1の不意な傾ぎを防止する台車姿勢制御機能を付加することもできる。したがって、ジャッキ機構3は、台車制動機能や台車姿勢制御機能等を備えた台車規制手段として用いることもできる。   Further, according to the present embodiment, the jack mechanism 3 moves the support portion 31 to the parking position where it abuts against the floor surface FL when the transport cart 10 stops traveling or parks, so that the transport cart 10 moves unexpectedly. It is possible to add a cart braking function to prevent this. Moreover, when loading the workpiece | work W on the conveyance trolley | bogie 10, the trolley attitude | position control function which prevents the loading platform 1 from inclining unexpectedly can also be added. Therefore, the jack mechanism 3 can also be used as a cart regulating means having a cart braking function, a cart attitude control function, and the like.

また、本実施形態によれば、支持部31は、台車4の外縁回転軌跡に隣接した位置に配置されているので、重量がかさむ台車4を隣接した位置で支持部31が支持しながら、載荷台1をより安定した姿勢で持ち上げることができる。そのため、長尺な搬送台車10であっても、載荷台1の長手方向の剛性を必要以上により高める必要がなく、搬送台車10の軽量化を図ることができ、その結果、ジャッキ機構3の簡素化も図ることができる。   Moreover, according to this embodiment, since the support part 31 is arrange | positioned in the position adjacent to the outer periphery rotation locus | trajectory of the trolley | bogie 4, it is loaded while the support part 31 supports the trolley | bogie 4 with a heavy weight in the position adjacent. The table 1 can be lifted in a more stable posture. Therefore, even if it is the long conveyance trolley | bogie 10, it is not necessary to raise the rigidity of the longitudinal direction of the loading platform 1 more than necessary, and weight reduction of the conveyance trolley | bogie 10 can be achieved, As a result, the jack mechanism 3 is simplified. Can also be achieved.

<変形例>
以上、本実施形態の搬送台車10を詳細に説明したが、本発明はこれに限定されることなく、その趣旨を逸脱しない範囲で様々な変更が可能である。例えば、本実施形態では、走行車輪2が床面上を走行するが、床面に設置した軌道上を走行しても良いことは、言うまでもない。また、ジャッキ機構3は、複数に分割して設置されているが、全体を又はその一部(例えば、搬送台車の右側と左側)を一体に構成しても良い。更に、伝達部材33は、昇降用駆動モータ32の駆動軸と軸連結具34を介して連結され、前後方向へ向けて水平状に延伸する部材であるが、チェーン等からなる伝達部材でも構わない。
<Modification>
As mentioned above, although the conveyance trolley | bogie 10 of this embodiment was demonstrated in detail, this invention is not limited to this, A various change is possible in the range which does not deviate from the meaning. For example, in the present embodiment, the traveling wheels 2 travel on the floor surface, but it goes without saying that the traveling wheels 2 may travel on a track installed on the floor surface. Moreover, although the jack mechanism 3 is divided | segmented and installed in plurality, you may comprise the whole or a part (for example, the right side and the left side of a conveyance trolley) integrally. Furthermore, the transmission member 33 is a member that is connected to the drive shaft of the lifting drive motor 32 via the shaft coupling 34 and extends horizontally in the front-rear direction, but may be a transmission member made of a chain or the like. .

本発明は、載荷台に載置して搬送するワークを昇降可能に形成され、かつ走行車輪の走行方向が異なる特定方向へ切換え可能に形成された搬送台車として利用できる。   INDUSTRIAL APPLICABILITY The present invention can be used as a transport carriage that is formed so as to be able to move up and down a workpiece that is placed on a loading platform and transported, and that can be switched to a specific direction in which the traveling direction of the traveling wheels is different.

1 載荷台
2 走行車輪
3 ジャッキ機構
4 台車
10 搬送台車
31 支持部
32 昇降用駆動モータ
33 伝達部材
311 ネジジャッキ部
312 下当接座
313 堰部
331 ウォームギア部
FL 床面(路面)
W ワーク
DESCRIPTION OF SYMBOLS 1 Loading platform 2 Traveling wheel 3 Jack mechanism 4 Cargo 10 Carriage cart 31 Support part 32 Elevating drive motor 33 Transmission member 311 Screw jack part 312 Lower contact seat 313 Weir part 331 Worm gear part FL Floor surface (road surface)
W Work

Claims (6)

載荷台に載置して搬送するワークを昇降可能に形成され、前記載荷台に水平回転可能に支持された台車の走行車輪の走行方向が異なる特定方向へ切換え可能に形成された搬送台車であって、
前記載荷台には、複数の支持部が上下方向に移動するジャッキ機構を備え、前記各支持部が上昇して前記ワークを前記載荷台から略平行に離間させ、前記各支持部が下降して前記走行車輪を路面から略平行に離間させることを特徴とする搬送台車。
It is a transport cart that is formed so that it can be moved up and down on the loading platform and that can be switched to a specific direction in which the traveling direction of the traveling wheels of the cart that is supported by the loading platform so as to be horizontally rotatable is different. And
The loading platform includes a jack mechanism in which a plurality of support portions move in the vertical direction, and the support portions are lifted to separate the workpiece from the loading platform substantially in parallel, and the support portions are lowered. A transporting carriage characterized in that the traveling wheels are separated from the road surface substantially in parallel.
請求項1に記載された搬送台車において、
前記ジャッキ機構には、昇降用駆動モータと当該昇降用駆動モータの回転力を複数の前記支持部へ伝達する伝達部材とを備えていることを特徴とする搬送台車。
In the conveyance trolley | bogie described in Claim 1,
The jack mechanism includes a lifting drive motor and a transmission member that transmits a rotational force of the lifting drive motor to the plurality of support portions.
請求項2に記載された搬送台車において、
前記支持部には、ネジジャッキ部が上下方向に形成され、当該ネジジャッキ部が前記伝達部材に形成されたウォームギア部と係合していることを特徴とする搬送台車。
In the conveyance trolley | bogie described in Claim 2,
A screw carrier portion is formed on the support portion in a vertical direction, and the screw jack portion is engaged with a worm gear portion formed on the transmission member.
請求項3に記載された搬送台車において、
前記支持部の下端部には、前記路面と当接する下当接座の外周に起立する堰部を形成したことを特徴とする搬送台車。
In the conveyance trolley | bogie described in Claim 3,
A conveying carriage characterized in that a weir portion standing on an outer periphery of a lower abutment seat that abuts on the road surface is formed at a lower end portion of the support portion.
請求項1乃至請求項4のいずれか1項に記載された搬送台車において、
前記ジャッキ機構は、当該搬送台車が走行停止又は駐車する際に、前記支持部を路面と当接する駐車位置に移動させることを特徴とする搬送台車。
In the conveyance trolley | bogie described in any one of Claim 1 thru | or 4,
The jack mechanism moves the support portion to a parking position that abuts against a road surface when the transport cart is stopped or parked.
請求項1乃至請求項5のいずれか1項に記載された搬送台車において、
前記支持部は、前記台車の外縁回転軌跡に隣接した位置に配置されていることを特徴とする搬送台車。
In the conveyance trolley | bogie described in any one of Claims 1 thru | or 5,
The transporting carriage is characterized in that the support portion is disposed at a position adjacent to an outer edge rotation locus of the carriage.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109748207A (en) * 2019-03-05 2019-05-14 北京以小科技有限公司 The small automobile-used wedge-shaped lifting device of AGV, wedge-shaped lifter and AGV trolley
CN111204365A (en) * 2020-03-06 2020-05-29 湖北文理学院 Multifunctional transfer trolley

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04100772A (en) * 1990-08-17 1992-04-02 Penta Ocean Constr Co Ltd Heavy object transport carriage with direction changeable mechanism
JPH05162620A (en) * 1991-12-16 1993-06-29 Hitachi Techno Eng Co Ltd Transport carriage

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04100772A (en) * 1990-08-17 1992-04-02 Penta Ocean Constr Co Ltd Heavy object transport carriage with direction changeable mechanism
JPH05162620A (en) * 1991-12-16 1993-06-29 Hitachi Techno Eng Co Ltd Transport carriage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109748207A (en) * 2019-03-05 2019-05-14 北京以小科技有限公司 The small automobile-used wedge-shaped lifting device of AGV, wedge-shaped lifter and AGV trolley
CN111204365A (en) * 2020-03-06 2020-05-29 湖北文理学院 Multifunctional transfer trolley

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