1246497 (1) 玖、發明說明 【發明所屬之技術領域】 本發明是關於一種在將被搬運物搬運至建築構造物內 各處的系統等，沿著行走軌道橫行及昇降地行走的被搬運 物的搬運台車者。 【先前技術】 近年來在大規模的醫療設施中，廣泛地普及有效地進 行各種文書或檢體等搬運所用的自動搬運系統。 通常，該自動搬運系統是成爲在具多數診察室或治療 室等各房間的天花板後空間舖設搬運軌道，而搬運台車從 該搬運軌道被引導至設於各房間內的工作站的構成。又， 行走上述搬運軌道的複數台車每一台的移動，是成爲藉由 控制裝置所控制，移動至藉由該控制裝置所指定的房間內 的工作站的構成。 在上述搬運系統中，不但將搬運台車朝水平方向移動 ’而且也必須朝上下方向移動之故，因而在該系統成爲需 要將搬運台車朝上下方向移動的昇降機構。先前作爲具備 將迨種搬運台車朝上下方向移動的昇降機構的自動搬運系 統’眾知有表示於第3圖至第5圖者。 在第3圖中，記號5 0是舖設在天花板後空間^ 〇的搬運 軌道，號Π 0是設在具有車輪7 1的搬運台車7 〇進出的各 房間內的工作站。在工作站1 1 0的下部，設有對於搬運台 車7 〇用以進行被搬運物的昇降的開口部丨η。搬運軌道5 〇 -4- (2) 1246497 是由敷設在天花板後空間1 0 0的主軌道5 1，及在主軌道5 1 的中間部中配置成位於工作站]1 〇的上方的主移動軌道52 所構成，成爲搬運台車7 〇行成在搬運軌道5 0上行走的構成 〇 在工作站1 〇 〇設有使用滾珠螺旋6 1，皮帶鏈條等的昇 降手段。在這裏說明滾珠螺旋6 1的情形。滾珠螺旋6 1是旋 轉自如地被支持，而且設在垂直方向；滾珠螺旋6 1是成爲 藉由驅動裝置6 2被旋轉驅動的構成。如第4圖所示地，主 移動軌道52是由主移動軌道本體53’及設於主移動軌道本 體5 3的側面的主移動體5 4所構成，而主移動體5 4 配置有 母螺旋構件5 5。母螺旋構件5 5是被螺裝於滾形螺旋6 1 ’當 旋轉滾珠螺旋6 1時，主移動軌道5 2成爲上下移動的構成。 在該構成中，藉由滾珠螺旋6 1的旋轉使得主移動軌道 5 2朝下方移動時，如第5圖所示地成爲主移動軌道5 2上的 搬運台車7 〇到達設於工作站1 1 〇的開口部的構成。 如第4圖所示地，在主移動體5 4的上面，配置有支持 構件5 7，而在支持構件5 7上裝載有副移動軌道5 8。副移動 軌道5 8是由副移動軌道本體5 9與副移動體6 0所構成；在副 移動體6 0形成有作成比滾珠螺旋6 1的外徑更大徑的貫通孔 ’滾珠螺旋6 1相對地貫通地位於該貫通孔。因此’副移動 軌道58是成爲可自由地上下移動，通常是成爲裝載於支持 構件5 7上的狀態。 在該構成中，搬運台車7 0的下方向移動是如下地進行 - 5- (3) 1246497 如第3圖所示地，行走主軌道5 1的搬運台車7 Ο， 主移動軌道5 2上時，藉由未圖示的控制裝置使搬運台 停止。之後，起動驅動裝置6 2進行旋轉滾珠螺旋6 1， 具備母螺旋構件5 5的主移動軌道5 2朝下方移動。然後 搬運台車7 〇位於設在工作站1 1 0的開口部1 1 1時，.則停 珠螺旋6 1的旋轉。 這時候，在主移動軌道5 2的下降途中，副移動軌 是成爲被裝載於支持構件5 7之故，因而如第5圖所示 當副移動軌道本體5 9到達主軌道5 1時，則形成於副移 道本體5 9的兩端部的凸部4 9扣合於主軌道5 1，並結合 移動軌道本體59與主軌道51。 在該狀態中，在開口部1 Η成爲可裝降被搬運物 且在搬送軌道50上成爲可通行其他搬運台車7 0。 以下，說明搬運台車7 0的上方向的移動。 在開口部11 1完成被搬運物的積降之後，與朝下 的移動同樣，主移動軌道5 2是朝上方移動。之後，設 移動體5 4上面的支持體5 7的上面，到達構成副移動軌 的副移動體6 0的下面時，則在支持體5 7上裝載有副移 道58，在該狀態下，主移動體52是朝上方再移動。然 主移動軌道5 2到達主軌道5 1成爲搬運台車7 0行走在 軌道5 0上。 然而，在上述搬運系統中，欲上下移動搬運台車 爲昇降機構，需要滾珠螺旋與驅動機構之故’因而上 統整體的構成變成龐大，有系統整體變成高價格的問 位於 車70 由此 ，當 止滾 道58 地， 動軌 有副 ，而 方向 在主 道58 動軌 後， 搬運 ，作 述系 題。 -6- (4) 1246497 又，作爲未採用表示於第3圖至第5圖的搬運系統而能昇降 搬運台車的系統，習知就有將線性馬達作爲驅動機構者， 惟在這時候，沿著搬運軌道必須設置磁鐵等之故，因而有 系統整體會成爲高價格的缺點問題。 【發明內容】 本發明是考慮此種情事而創作者，其目的是在提供一 種在搬運被搬運物的搬運系統中所使用的搬運台車，可簡 單地形成上述搬運系統的構成，並作成低成本的構成的搬 運台車。 解決上述課題，爲了達成此種目的，本發明是提案以 下的手段。 本發明的第一形態，針對於沿著行走軌道可移動的台 車，其特徵爲具備： 配置於上述行走軌道的下方的台車本體； 配置成滾動上述行走軌道的上面的驅動輪； 配置成滾動上述行走軌道的下面的輔助輪， 上述輔助輪是具備可變更地支持該輔助輪的軸線與上 述驅動輪的軸線的距離，而且朝密接於上述行走軌道的下 面的方向彈推的彈推手段； 上述輔助輪的軸線，是配置在連結上述驅動輪的軸線 ’與上述台車本體的重心的直線爲準朝行走方向的後方。 依照該搬運台車，抵接於行走軌道的下面側而行走的 輔助輪藉由彈推手段彈推於行走軌道，且該輔助輪是位於 (5) 1246497 此連結上述驅動輪的軸線與上述台車本體的重心的直線更 朝行走方向的後方的構成之故，因而可將以上述驅動輪對 於上述輔助輪的旋轉軸線作爲中心的上述驅動輪所產生力 矩有效果地附加於上述行走軌道。由此，成爲可確實地形 成上述輔助輪及驅動輪對於上述行走軌道的密接，即使將 上述行走軌道朝上下方向傾斜時，也可抑制上述台車在上 述行走軌道的滑動，成爲可有效地行走。 本發明的第二形態，針對於沿著行走軌道可移動的台 車，其特徵爲具備： 配置於上述行走軌道的下方的台車本體； 配置成滾動上述行走軌道的上面的驅動輪； 配置成滾動上述行走軌道的下面的輔助輪， 上述輔助輪是具備可變更地支持輔助輪的軸線與上述 驅動輪的軸線的距離，而且朝密接於上述行走軌道的下面 的方向彈推的彈推手段； 上述輔助輪的軸線，是配置在連結上述驅動輪的軸線 ’與上述台車本體的重心的直線爲準朝行走方向的前方及 後方。 依照該搬運台車，上述輔助輪的軸線，是配置在比連 結上述驅動輪的軸線與上述台車本體的重心的直線更朝行 走方向的前方及後方之故，因而在沿著上述行走軌道而上 昇時及下降時之雙方，則在上述台車與上述行走軌道之間 可得到充分的摩擦力並可確實地行走。 在上述搬運台車中，具備上述輔助輪的軸線對於上述 -8- (6) 1246497 驅動輪的軸線禁止分離所定値以上的止動具也可以。 依照該搬運台車，若上述輔助輪的軸線從上述驅動輪 的軸線欲分離所定値以上時，該離開藉由止動具被禁止之 故’因而藉由上述台車的載重使得作用於上述驅動輪的力 矩會有效地施加於該驅動輪與上述輔助輪，因此可將上述 台車與上述行走軌道的密接成爲確實者。因此，不會有上 述台車滑動在上述行走軌道，而使在該行走軌道傾斜時也 可良好地行走。 【實施方式】 以下，參照圖式，說明本發明的實施形態。 第】圖及第2圖是表示具備作爲本發明的一實施形態所 表示的搬運台車的搬運系統的主要部分者。 本實施形態是例如配置在醫療設施等者。 在第1圖中，記號1是搬運軌道（行走軌道），表示朝 斜上方向舖設的部分，而記號2是表示本發明的搬運台車 〇 搬運軌道1是在未圖示的天花板後空間舖設成具有起 伏。搬運台車2是具備：配置於搬運軌道1的下方的台車本 體J ’及配置於搬運軌道1的上面成爲滾動的驅動輪4，及 配置於搬運軌道i的下面成爲滾動的輔助輪5 a、5 b。 驅動輪4是以水平方向軸線a作爲中心而轉動自如地 支持於設成從台車本體3朝垂直方向延伸的機框6，並藉由 未圖示的驅動裝置成爲可進行旋轉驅動的構成。 -9- (7) 1246497 輔助輪5 a、5 b是經由支持體7朝搬運台車2的行走方向 X隔著一定間隔配設兩個，而以水平方向的軸線B 1、B 2作 爲中心旋轉自如地支持於支持體7的大約中央部。輔助輪 5 a、5 b的軸線B 1、B 2是配置在連結驅動輪4的軸線A與台 車本體3的重心的直線爲準朝行走方向X的前方及後方。 支持體7是對於台車本身朝上下方向被支持成可自由 移動之狀態，而在支持體7的一端部與台車本體3之間設有 阻尼器8，在支持體7的另一端部與台車本體3之間設有彈 簧（彈推構件）9。阻尼器8是當支持體7進行上下移動時 ，抑制支持體的急激移動，而當搬運台車2緊急停止或急 速加速時，防止搬運台車2的傾斜。彈簧9是彈推支持體7 及經由支持體7經常朝上方（搬運軌道1側彈推輔助輪5 a、 5b ) 〇 在支持體7下方設有止動具1 0，當支持體7對於搬運軌 道1朝直行方向移動時，成爲將支持體7對於台車本體3側 的移動禁止在一定位置的構成。亦即，輔助輪5的軸線B i 、B 2對於驅動輪4的軸線A禁止離開所定値以上的構成。 以下，說明如上述地所構成的搬運系統的作用。 在上述搬運系統中，在台車本體3裝載被搬運物，藉 由未圖示的驅動裝置而利用將驅動輪4進行旋轉驅動，俾 將被搬違物搬運至目的位置。 如第]圖及第2圖所示地，當搬運台車2到達朝上下方 向傾斜之部分時，藉由驅動輪4及輔助輪5 a、5 b密接於搬 運軌道1，即可實現良好的行走。亦即，如第]圖所示地搬 -10- (8) 1246497 運軌道2位在朝上方傾斜的搬運軌道1進行上昇時，則台車 本體3的載重W施加於驅動輪4，而且台車本體3的重心〇是 對於水平方向比驅動輪4的軸線A僅位於L 1前方之故，因 而驅動輪4是對於後方側輔助輪5 b具有所定力矩w · L 1而 抵接於搬運軌道1，驅動輪4及後方側輔助輪5 b是具有所定 摩擦力而密接於搬運軌道1。 又，當到達傾斜陡峻處時，利用台車本體3的載重W 使得前方側輔助輪5 a更朝下方移動，而支持體7抗拒彈簧9 的彈推力更朝下方移動，惟這時候支持體7是在一定位置 藉由止動具1 〇禁止朝下方向的移動。由此，以驅動輪4的 軸線A爲中心的力矩W · L 1會更增大，同時可得到驅動輪4 及輔助輪5 a、5 b對於搬運軌道1的密接力的增大之故，因 而成爲不會產生搬運台車2對於搬運軌道1的滑動而能良好 地行走。 以下如第2圖所示地，說明搬運台車2位於朝下方向傾 斜的搬運軌道1而進行下降的情形。 這時候，台車本體3的載重W施加於驅動輪4，而且台 車本體3的重心G是對於水平方向比驅動輪4的軸線A僅位 於L 2後方故，因而驅動輪4是對於前方側輔助輪5 a是具有 所定力矩W · L2而抵接於搬運軌道1，驅動輪4及前方側輔 助輪5 a是具有所定摩擦而密接於搬運軌道1。 又，當到達傾斜陡峻處時’利用台車本體3的載重W 使得後方側輔助輪5 b更朝下方移動，而支持體7抗拒彈簧9 的彈推力更朝下方移動，惟這時候支持體7是在一定位置 -11 - (9) 1246497 藉由止動具1 0禁止朝下方向的移動。由此，以驅動輪4白勺 軸線Α爲中心的力矩W · L 1會更增大，同時可得到驅動輪* 及輔助輪5 a、5 b對於搬運軌道1的密接力的增大之故，因 而成爲不會產生搬運台車2對於搬運軌道1的滑動而能良好 地行走。 如上述地在上述搬運系統中，上昇下降搬運台車2時 ，則驅動輪4對於輔助輪5 a、5 b的力矩W · L 1，W · L2確 實地施加於搬運軌道1，使得驅動輪4及輔助輪5 a、5 b以適 當地摩擦力抵接，而不會產生搬運台車2對於搬運軌道1的 滑動成爲可良好地實現搬運台車2的行走。又，也不必在 搬運軌道1設置昇降機構等，將搬運軌道1設成在上下方向 具有起伏，則可良好地行走搬運台車,2之故，因而可低成 本地提供上述搬運系統。 又，在上述實施形態中，作爲彈推手段採用彈簧，惟 作成氣缸或油壓缸等的流體壓缸，其功能也不會變更。又 ，有關於本發明的適用並不被限定於醫療設施，可適用在 各種建築構造物由搬運被搬運物的系統。 【圖式簡單說明】 桌1圖是表不在具備作爲本發明的一實施形態所表示 的搬運台車的搬運系統中搬運台車到達搬運軌道的上昇部 的側視圖。 桌2圖是表不圖不於第1圖的搬運台車到達搬運軌道的 下降部時的側視圖。 - 12 - (10) 1246497 第3圖是表示習知的搬運系統的前視圖。 第4圖是表示習知的搬運系統的側視圖。 第5圖是表示在習知的搬運系統中搬運台車下降的狀 態的前視圖。 【符號說明】 1 搬運軌道 2 搬運台車 3 台車本體 4 驅動輪 5 a、5 b 輔助輪 7 支持體 9 彈推手段 10 止動具 A 驅動輪的軸線 B 1、B 2 輔助輪的軸線 G 台車本體的重心1246497 (1) 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 】 】 】 】 】 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在The handling trolley. [Prior Art] In recent years, in large-scale medical facilities, an automatic transport system for carrying out various documents and specimens and the like has been widely spread. Usually, the automatic transport system is configured such that a transport rail is laid in a rear space of a ceiling in each of a plurality of examination rooms or treatment rooms, and the transport trolley is guided from the transport rail to a workstation provided in each room. Further, the movement of each of the plurality of vehicles that travel on the transport rail is a configuration that is controlled by the control device and moved to a workstation in the room designated by the control device. In the above-described conveyance system, not only the conveyance carriage is moved in the horizontal direction but also the vertical movement is required. Therefore, the system is an elevating mechanism that requires the conveyance carriage to move in the vertical direction. The automatic transport system that has previously been provided with a lifting mechanism that moves the transport trolley in the vertical direction is known as shown in Figs. 3 to 5 . In Fig. 3, the symbol 50 is a transport track laid in the rear space of the ceiling, and the number Π 0 is a workstation provided in each room in which the transport carriage 7 having the wheels 7 1 enters and exits. In the lower portion of the workstation 110, there is provided an opening portion 对于 for transporting the carriage 7 to raise and lower the object to be transported. The transport rail 5 〇 -4- (2) 1246497 is a main rail 51 that is placed in the rear space of the ceiling 100 and a main moving rail that is placed above the station]1 in the middle of the main rail 5 1 In the configuration of the 52, the transporting carriage 7 is configured to travel on the transport rail 50. The workstation 1 is provided with a lifting mechanism using a ball screw 6-1, a belt chain, and the like. Here, the case of the ball screw 6 1 will be described. The ball screw 6 1 is rotatably supported and provided in the vertical direction; the ball screw 61 is configured to be rotationally driven by the driving device 62. As shown in Fig. 4, the main moving rail 52 is composed of a main moving rail main body 53' and a main moving body 54 provided on the side surface of the main moving rail main body 53, and the main moving body 5 4 is provided with a mother spiral. Member 5 5. The female spiral member 55 is screwed to the rolling spiral 6 1 ' when the rotating ball screw 6 1 is rotated, and the main moving rail 5 2 is moved up and down. In this configuration, when the main moving rail 52 moves downward by the rotation of the ball screw 61, the transporting carriage 7 on the main moving rail 52 reaches the station 1 1 as shown in Fig. 5 The configuration of the opening. As shown in Fig. 4, a support member 57 is disposed on the upper surface of the main movable body 5 4, and a sub-movement rail 58 is mounted on the support member 57. The sub-moving rail 58 is composed of the sub-moving rail main body 59 and the sub-moving body 60; and the sub-moving body 60 is formed with a through-hole 'ball spiral 6 1 which is formed to have a larger diameter than the outer diameter of the ball screw 61. The through hole is located relatively in the through hole. Therefore, the sub-moving rail 58 is freely movable up and down, and is usually placed on the supporting member 57. In this configuration, the downward movement of the transport carriage 70 is performed as follows - 5- (3) 1246497 As shown in Fig. 3, the transport carriage 7 行走 of the main rail 5 1 is moved, and when the main transport rail 5 2 is moved The conveyance table is stopped by a control device (not shown). Thereafter, the starter drive unit 6 2 rotates the ball screw 61, and the main moving rail 52 having the female spiral member 55 moves downward. Then, when the transport trolley 7 is located at the opening 1 1 1 of the workstation 110, the rotation of the bead screw 6 1 is stopped. At this time, in the middle of the descending movement of the main moving rail 52, the sub-moving rail is loaded on the supporting member 57, so that when the sub-moving rail main body 59 reaches the main rail 51 as shown in Fig. 5, The convex portion 49 formed at both end portions of the auxiliary path body 59 is engaged with the main rail 51, and is coupled to the moving rail body 59 and the main rail 51. In this state, the object to be transported can be loaded and lowered in the opening 1 and the other transporting vehicle 70 can be passed through the transport rail 50. Hereinafter, the movement of the transporting carriage 70 in the upward direction will be described. After the opening portion 11 1 completes the accumulation of the object to be transported, the main moving rail 52 moves upward as in the downward movement. Thereafter, when the upper surface of the support body 57 on the upper surface of the moving body 5 4 reaches the lower surface of the sub-moving body 60 that constitutes the sub-moving rail, the sub-transport 58 is placed on the support body 57, and in this state, The main moving body 52 is moved upward again. However, the main moving rail 52 reaches the main rail 5 1 so that the transport trolley 70 walks on the rail 50. However, in the above-described conveyance system, in order to move the conveyance trolley up and down as a lifting mechanism, the ball screw and the drive mechanism are required. Therefore, the overall structure of the upper system becomes large, and the entire system becomes a high price. The stop track 58 is ground, the moving rail has a pair, and the direction is moved after the main track 58 is moved, and the title is described. -6- (4) 1246497 In addition, as a system that can lift and transport a trolley without using the transport system shown in Figs. 3 to 5, it is known to use a linear motor as a drive mechanism, but at this time, along the The handling rails must be provided with magnets, etc., and thus the system as a whole will become a disadvantage of high price. SUMMARY OF THE INVENTION The present invention has been made in consideration of such a situation, and an object of the invention is to provide a transporting trolley used in a transport system for transporting a transported object, and to easily form the transport system and to provide a low cost. The composition of the handling trolley. In order to achieve the above object, the present invention proposes the following means. According to a first aspect of the present invention, a trolley that is movable along a traveling rail includes: a carriage body disposed below the traveling rail; a driving wheel disposed to roll an upper surface of the traveling rail; and configured to scroll An auxiliary wheel on the lower side of the traveling rail, wherein the auxiliary wheel is provided with a distance between the axis of the auxiliary wheel and the axis of the driving wheel, and is elastically pushed in a direction in which the driving rail is in contact with the lower side of the traveling rail; The axis of the auxiliary wheel is disposed rearward in a direction in which the line connecting the axis of the drive wheel and the center of gravity of the trolley body is in the traveling direction. According to the transport trolley, the auxiliary wheel that abuts on the lower side of the traveling rail is pushed by the bouncing means on the traveling rail, and the auxiliary wheel is located at (5) 1246497, the axis connecting the driving wheel and the trolley body Since the straight line of the center of gravity is further rearward in the traveling direction, the moment generated by the drive wheel centered on the rotation axis of the auxiliary wheel by the drive wheel can be effectively applied to the traveling track. Thereby, it is possible to reliably form the adhesion between the auxiliary wheel and the drive wheel to the traveling rail, and even if the traveling rail is inclined in the vertical direction, the sliding of the trolley on the traveling rail can be suppressed, and the traveling can be effectively performed. According to a second aspect of the present invention, a bogie that is movable along a traveling rail includes: a bogie body disposed below the traveling rail; a driving wheel disposed to roll an upper surface of the traveling rail; and configured to scroll An auxiliary wheel on the lower side of the traveling rail, wherein the auxiliary wheel is provided with a distance between the axis of the auxiliary wheel and the axis of the driving wheel, and is elastically pushed in a direction in which the lower side of the traveling rail is closely attached; The axis of the wheel is disposed in front of and behind the line connecting the axis of the drive wheel and the center of gravity of the trolley body toward the traveling direction. According to the transport carriage, the axis of the auxiliary wheel is disposed forward and rearward in a traveling direction with respect to a line connecting the axis of the drive wheel and the center of gravity of the vehicle body, and thus rises along the traveling track. And both of them fall, and sufficient frictional force can be obtained between the above-mentioned trolley and the above-mentioned traveling rail, and it can walk reliably. In the above-described transporting carriage, the axis of the auxiliary wheel may be such that the axis of the -8-(6) 1246497 drive wheel is prohibited from being separated by more than a predetermined stop. According to the transporting trolley, if the axis of the auxiliary wheel is to be separated from the axis of the driving wheel by a predetermined value, the leaving is prohibited by the stopper, and thus the load of the trolley acts on the driving wheel. The torque is effectively applied to the drive wheel and the auxiliary wheel, so that the adhesion between the trolley and the traveling track can be made sure. Therefore, the above-described trolley does not slide on the above-mentioned traveling rail, and it is possible to walk well even when the traveling rail is inclined. [Embodiment] Hereinafter, embodiments of the present invention will be described with reference to the drawings. The first diagram and the second diagram show the main part of the transport system including the transport trolley shown as an embodiment of the present invention. This embodiment is, for example, placed in a medical facility or the like. In the first drawing, the symbol 1 is a conveyance rail (traveling rail) indicating a portion laid in the obliquely upward direction, and the symbol 2 indicates that the conveyance carriage conveyance rail 1 of the present invention is laid in a rear space of a ceiling (not shown). Has an ups and downs. The transport vehicle 2 includes a carriage body J′ disposed below the conveyance rail 1 and a drive wheel 4 disposed on the upper surface of the conveyance rail 1 to roll, and auxiliary wheels 5 a and 5 disposed on the lower surface of the conveyance rail i to roll. b. The drive wheel 4 is rotatably supported by a frame 6 that is provided to extend in the vertical direction from the carriage body 3 with the horizontal axis a as a center, and is configured to be rotatable by a drive device (not shown). -9- (7) 1246497 The auxiliary wheels 5a and 5b are disposed at a predetermined interval in the traveling direction X of the transport carriage 2 via the support body 7, and are rotated centering on the horizontal axes B1 and B2. It is freely supported at approximately the center of the support body 7. The axes B1 and B2 of the auxiliary wheels 5a and 5b are arranged in front of and behind the straight line connecting the axis A of the drive wheel 4 and the center of gravity of the vehicle body 3 toward the traveling direction X. The support body 7 is in a state in which the carriage itself is supported to be freely movable in the up-and-down direction, and a damper 8 is provided between the one end portion of the support body 7 and the carriage body 3, and the other end portion of the support body 7 and the carriage body are provided. A spring (elastic member) 9 is provided between the three. The damper 8 suppresses the rapid movement of the support when the support body 7 moves up and down, and prevents the conveyance trolley 2 from tilting when the transport carriage 2 is suddenly stopped or rapidly accelerated. The spring 9 is the elastic pusher 7 and is often pushed upward via the support 7 (the auxiliary wheels 5 a, 5b are pushed by the transport rail 1 side). The stopper 10 is provided below the support 7 when the support 7 is transported. When the rail 1 is moved in the straight direction, the movement of the support body 7 to the side of the truck body 3 is prohibited from being fixed at a predetermined position. That is, the axes B i and B 2 of the auxiliary wheel 5 are prohibited from leaving the predetermined axis or more for the axis A of the drive wheel 4. Hereinafter, the operation of the transport system configured as described above will be described. In the transport system described above, the object to be transported is loaded on the cart body 3, and the drive wheel 4 is rotationally driven by a drive device (not shown), and the object to be transported is transported to the destination. As shown in Fig. 2 and Fig. 2, when the transport trolley 2 reaches the portion inclined in the vertical direction, the drive wheel 4 and the auxiliary wheels 5a, 5b are in close contact with the transport rail 1, so that good walking can be achieved. . In other words, when the transport rail 1 which is tilted upward is raised as shown in the figure, the load is applied to the drive wheel 4, and the load of the trolley body is applied to the drive wheel 4, and the trolley body is lifted. The center of gravity 33 is only in front of L1 in the horizontal direction than the axis A of the drive wheel 4, so that the drive wheel 4 has a predetermined moment w · L 1 for the rear side auxiliary wheel 5 b and abuts against the conveyance rail 1 . The drive wheel 4 and the rear side auxiliary wheel 5b are in close contact with the conveyance rail 1 with a predetermined frictional force. Further, when reaching the steep slope, the load W of the trolley body 3 is used to move the front side auxiliary wheel 5a downward, and the support body 7 resists the spring force of the spring 9 to move downward, but at this time, the support body 7 is The movement of the downward direction is prohibited by the stopper 1 at a certain position. Thereby, the moment W · L 1 centering on the axis A of the drive wheel 4 is further increased, and at the same time, the increase in the adhesion force of the drive wheel 4 and the auxiliary wheels 5 a, 5 b to the conveyance rail 1 can be obtained. Therefore, the conveyance trolley 2 does not cause the sliding of the conveyance rail 1 and can travel well. As will be described below with reference to Fig. 2, the transport carriage 2 in which the transport carriage 2 is tilted downward is described as being lowered. At this time, the load W of the truck body 3 is applied to the drive wheels 4, and the center of gravity G of the carriage body 3 is located behind the axis A of the drive wheels 4 only in the horizontal direction, so that the drive wheels 4 are for the front side auxiliary wheels. 5 a is abutting on the conveyance rail 1 with a predetermined torque W · L2 , and the drive wheel 4 and the front side auxiliary wheel 5 a are fixed to the conveyance rail 1 with a predetermined friction. Further, when reaching the steep slope, the load W of the trolley body 3 is used to move the rear side auxiliary wheel 5b downward, and the support body 7 resists the spring force of the spring 9 to move downward, but the support body 7 is At a certain position -11 - (9) 1246497, the movement in the downward direction is prohibited by the stopper 10. Thereby, the moment W · L 1 centering on the axis Α of the drive wheel 4 is further increased, and at the same time, the increase in the adhesion force of the drive wheel* and the auxiliary wheels 5 a, 5 b to the conveyance rail 1 can be obtained. Therefore, the conveyance trolley 2 does not cause the sliding of the conveyance rail 1 and can travel well. As described above, when the transporting carriage 2 is raised and lowered in the above-described conveyance system, the moments W · L 1, W · L2 of the drive wheels 4 with respect to the auxiliary wheels 5 a and 5 b are surely applied to the conveyance rail 1 so that the drive wheels 4 The auxiliary wheels 5a and 5b are abutted by an appropriate frictional force, and the movement of the transporting carriage 1 can be satisfactorily achieved without causing the transporting carriage 2 to slide on the transport rail 1. Further, it is not necessary to provide a lifting mechanism or the like on the conveyance rail 1, and the conveyance rail 1 is provided to have an undulation in the vertical direction, so that the conveyance carriage can be satisfactorily moved, and the conveyance system can be provided locally at a low level. Further, in the above-described embodiment, a spring is used as the spring pushing means, and a fluid pressure cylinder such as a cylinder or a hydraulic cylinder is not changed. Further, the application of the present invention is not limited to medical facilities, and can be applied to systems in which various building structures are transported. [Brief Description of the Drawings] The table 1 is a side view showing a rising portion in which the conveyance carriage reaches the conveyance rail in the conveyance system of the conveyance trolley shown as an embodiment of the present invention. The table 2 is a side view showing the case where the transport trolley of Fig. 1 does not reach the lower portion of the transport rail. - 12 - (10) 1246497 Fig. 3 is a front view showing a conventional handling system. Fig. 4 is a side view showing a conventional transport system. Fig. 5 is a front elevational view showing a state in which the conveyance trolley is lowered in a conventional conveyance system. [Description of symbols] 1 Transport rail 2 Transport trolley 3 Pallet body 4 Drive wheel 5 a, 5 b Auxiliary wheel 7 Support body 9 Bolting means 10 Stopper A Axle B of the drive wheel B 1 , B 2 Axis G of the auxiliary wheel Trolley Center of gravity