JP6150168B2 - Conveyor equipment using a linked cart - Google Patents

Description

  The present invention relates to a transport device using a connected cart, in which a transport traveling body including a plurality of carts in series in a travel direction and a transport device between the carts is caused to travel along a travel route having a horizontal turn path portion. Is.

  A main traveling carriage used mainly for work support and work floors on both the left and right sides of the work, and a work floor for both front and rear ends of the work, which are used for transporting large works used in automobile assembly lines, etc. For example, as described in Patent Document 1, it is well-known that it is composed of two front and rear sub-carts used in In this type of transfer device, the central main carriage and the two front and rear sub-carts are connected by inter-cart connecting means, and one transport traveling body that transports one workpiece by the plurality of front and rear carriages. Although it is also known from Patent Document 1 to be configured so that it can be handled, in the configuration described in Patent Document 1, the inter-cart connection means is located in the travel path in the left and right sides of the transport traveling body. It was always provided in a connected state only on one side which is the inside of the horizontal curve path portion in the bending direction.

JP2013-6495A

  In the conventional well-known configuration described in Patent Document 1 above, the transport traveling body can be turned horizontally only in the direction in which the side on the side where the inter-cart connection means is located is inward. The route is limited to a simple loop layout that can be constituted by a horizontal curve route portion and a straight route portion that turn in the same direction, and there is no freedom in layout.

The present invention proposes a transport device using a connected cart that can solve the above-described conventional problems, and the transport device using a connected cart according to the present invention is the same as the embodiment described later. In order to facilitate understanding of the relationship, the reference numerals used in the description of the embodiment are shown with parentheses, and a plurality of carriages (2-4) and carriage connecting means (13, 14)
In the transfer device using the connecting carriage, the transporting body (1) provided with a transporting body (1) and driving means (26) for causing the transporting traveling body (1) to travel along the travel path. The means (13, 14) is composed of a pair of left and right connecting units (13a-14b) for connecting the left and right sides of the carts (2, 3 / 3,4) adjacent to each other in the front and rear directions. ~ 14b) can be switched between a connected state and a disconnected state that allow relative horizontal turning around the vertical axis (15,18) between the left and right sides of the front and rear adjacent carts (2,3 / 3,4) Each carriage (1) of the transport traveling body (1) entering the horizontal turn path portion (5, 7) is formed on the entrance side of each horizontal turn path portion (5, 7) provided in the travel path. 2, 3 / 3,4) of the pair of left and right connection units (13a-14b) is provided with a first connection control means (27) for operating at least one of the connection means, the first connection control means ( 27) Operation As a result, the connecting unit that is inside the bending direction of the horizontal turn path portion (5, 7) is in a connected state, and the horizontal turn path portion (5, 7)
The connecting means on the outside in the bending direction is configured so that the transport traveling body (1) enters the horizontal turn path portion (5, 7) in a disconnected state.

  According to the configuration of the present invention, when the transport traveling body that has traveled along the straight path portion enters the left-curved horizontal curve path portion, it is disposed on the entrance side of the left-curved horizontal curve path portion. By the first connection control means, the left connection unit is in the connected state and the right connection unit is in the disconnected state, and when the transport traveling body enters the right curved horizontal curve path, the right curved horizontal curve By the first connection control means disposed at the entrance of the path portion, the right connection unit is in a connected state and the left connection unit is in a disconnected state.

  Therefore, when the transporting traveling body travels along the horizontal curve path portion, each carriage constituting the transporting traveling body is always inside the bending direction among the left and right sides regardless of the bending direction. Since the side portions are connected by the connecting unit and can be relatively horizontally swiveled around the vertical axis of the connecting unit, and the side portions outside the bending direction are disconnected, the horizontal curve path portion It can run smoothly with the fan open around the center of the arc. In other words, according to the configuration of the present invention, it is possible to freely lay out the travel route of the transportation traveling body by incorporating both the left-curved horizontal curve path portion and the right-curved horizontal curve route portion.

  Further, when the transport traveling body travels at least on the horizontal curve path portion, the connecting unit that is inside the bending direction is always in a connected state, so that the transport traveling body travels on the horizontal curve path portion. The driving means can be used in either a boosting type or a pulling type. For example, the horizontal curve path portion is sent to the horizontal curve path portion by the push driving means on the entrance side of the horizontal curve path portion, and the horizontal curve path portion is immediately after the transfer traveling body is moved forward from the push drive means. It can be configured such that the transport traveling body continuously receives a propulsive force by the pull-in driving means on the outlet side, and the entire transport traveling body is withdrawn from the horizontal curve path portion. In other words, there are more choices of driving means for propelling the transport traveling body in the horizontal curve path section, which can be easily implemented.

  In carrying out the present invention, it is needless to say that traveling guide means for moving the transporting traveling body (each carriage) along the traveling path is necessary. For example, conventionally well-known guidance means for guiding the wheels provided in each carriage with a guide rail on the travel route side can also be used. Thus, since the traveling body for conveyance (each carriage) is guided so as to move along the traveling route, it can be conventionally used as a driving means for traveling the traveling body for transportation along the traveling route. Various known ones can be used. For example, among a plurality of carts constituting the transport traveling body, a specific one of the plurality of carts constituting the transport traveling body, a train system in which a specific wheel is rotationally driven to self-run, A chain drive system in which a base is engaged with a drive chain that moves along the travel path, and a friction drive wheel on the ground side on a friction drive surface provided so as to be continuous in parallel with the travel direction over the entire length of the transport traveling body Friction drive system that presses can be used. Further, the drive means does not have to use the same system throughout the travel route, and in some cases, different drive means can be used for the straight path portion and the horizontal curve route portion. .

  In addition, each connecting unit may be capable of traveling on a straight path portion in an adjacent state in which each carriage of the transport traveling body is continuous with each other when all the connecting units are in a connected state. The connection unit that has been switched to the disconnected state by the operation can maintain the disconnected state even when released from the operation, for example, the connecting unit that is locked in the disconnected state or the disconnected state is maintained by the spring force. When the traveling unit is connected to each other, the left and right connection units or all of the connection units are in a disconnected state even when the carriages of the transport traveling body travel along the straight path in the adjacent state where they are connected to each other. It can be configured as follows.

When carrying out the transportation device using the above-mentioned connecting cart according to the present invention, the horizontal curve path section (5, 7)
The first connection control means (27) provided on the entrance side of the left side of the pair of left and right connection units (13a to 14b) is connected to the side opposite to the bending direction of the horizontal curve path portion (5, 7). The unit is switched to the disconnected state, and the horizontal curve path portion (5, 7) has an outlet side of the horizontal curve path portion (5, 7) of the pair of left and right connection units (13a to 14b). The second connection control means (28) for returning the connection unit switched to the connection release state at the entrance side to the connection state is provided, and in the straight path portion (6) in the travel route, all the connection units (13a to 13a 14b) can be configured such that the transport traveling body (1) travels in the connected state. In this case, the connecting units (13a to 14b) can be fitted to and detached from the vertical shafts (15, 18) fixed to one carriage (3) and the vertical shafts (15, 18). Consists of a movable bearing member (17, 20) that is movable up and down provided on the other carriage (2, 4), and a cam follower (cam driven roller 29) provided on the movable bearing member (17, 20). The first connection control means (27) and the second connection control means (28) act on the cam driven portion (cam driven roller 29) to move the movable bearing member (17, 20) in a certain section. It can be constituted by a cam rail (30) which is separated upward from the vertical shaft (15, 18). According to this configuration, a means for holding the movable bearing member in a disconnected state separated upward from the vertical shaft is unnecessary, and the first connection control means on the inlet side and the second connection control means on the outlet side are: It can be implemented at low cost simply by using the same cam rail of a certain length.

Further, when a preferable configuration example as a guide means for guiding the transport traveling body so as to be movable along the travel route is shown, the transport traveling body (1) has two guide roller rows (21, 22), and each guide roller row (21, 22) rotates around the axis of the vertical axis (15, 18) at a position directly below the vertical axis (15, 18) of each connecting unit (13a-14b). Intermediate position rollers (21b, 21c, 22b, 22c)
And end position rollers (21a, 21d, 22a, 22d) rotatably provided around the vertical axis at both front and rear ends of the transport traveling body (1), and a straight path portion ( 6) includes a guide rail that guides the transport traveling body (1) through each roller of at least one guide roller row (21/22) of the two left and right guide roller rows (21, 22). (23) is laid on the horizontal curve path portion (5, 7) of the travel path via the rollers of the guide roller row (21/22) located on the inner side in the bending direction (1). Arc guide rails (25) can be installed. According to this configuration, it is possible to smoothly guide each carriage of the transport traveling body that travels in a fan-shaped open state particularly in the horizontal curve path portion.

  When adopting the first connection control means (27) or the first second both connection control means (27, 28) and the two right and left guide roller rows (21, 22), the connection control means, A guide rail (31) for restricting the movement path of each roller of the guide roller row (21/22) on the side where the connection units (13a to 14b) controlled by the connection control means can be provided. With this configuration, the connection state is reliably and satisfactorily controlled by eliminating the influence of the displacement in the lateral direction relative to the traveling direction of the connection unit whose connection state is controlled by the first connection control means or the first second connection control means. Can be done.

  Further, as driving means for driving the transport traveling body, a friction drive load bar attached to the transport traveling body so as to be continuous over the entire length of the transport traveling body, and disposed on the travel path side and pressed against the load bar. When the drive means comprising a friction drive unit having friction drive wheels that rotate in rotation is adopted, the load bar (8) is divided into at least one of the left and right sides of each carriage (2-4) for each carriage. The load bar unit (8a-8c) is horizontally turned by the vertical shaft (15) of the connecting unit (13a, 13b). It can be configured to be freely connected. The friction drive load bars (8, 9) are preferably attached to the left and right sides of the transport traveling body (1).

  When the load bar (8/9) and the second connection control means (28) are employed, the second connection control means (28) includes a connection unit controlled by the second connection control means (28). A pair of guide rollers (32, 33) can be provided to sandwich the load bar (8a-8c / 9a-9c) on the (13a, 13b / 14a, 14b) side from both the left and right sides and regulate the movement path. . According to this configuration, it is prevented by the pair of guide rollers using the friction drive load bar that the connecting units that are in the disengaged state are displaced from each other in the transverse direction with respect to the traveling direction. Thus, the return operation to the connected state by the second connection control means can be performed reliably and smoothly.

FIG. 1 is a schematic plan view showing a travel route of a transport traveling body. FIG. 2A is a plan view showing a pair of left and right load bars, bogie connection means, and wheels, and FIG. 2B is a side view of the transport traveling body. FIG. 3A is a plan view showing details of a pair of left and right load bars and bogie connection means, and FIG. 3B is a side view with the same part cut away. FIG. 4 is a front view showing a pair of left and right load bars, traveling guide means, friction drive means, and wheels. FIG. 5 is a partially cutaway side view showing the main part including the inter-cart connecting means for the transport traveling body and the first connection control means for releasing the connection. FIGS. 6A and 6B are side views of the main part showing the state when the front connection unit is switched from the connected state to the disconnected state by the first connection control means, and FIGS. It is a side view of the principal part which shows a mode when it switches from a connection state to a connection cancellation | release state by one connection control means. FIGS. 7A to 7C are side views of main parts showing a state where the front connection unit is switched from the connection release state to the connection state by the second connection control means. FIGS. 8A to 8C are side views of main parts showing a state where the rear connection unit is switched from the connection release state to the connection state by the second connection control means. 9A and 9B are plan views for explaining a traveling state when the traveling traveling body enters the clockwise horizontal turn path portion. 10A and 10B are plan views illustrating a state in which the traveling traveling body is traveling in the clockwise horizontal turn path portion. 11A and 11B are plan views for explaining a traveling state when the transport traveling body is withdrawn from the clockwise horizontal turn path portion. FIG. 12 is a plan view showing a specific configuration of second connection control means for returning each connection unit from the connection release state to the connection state. FIG. 13 is a side view of the second connection control means as seen from the inside. FIG. 14 is a view taken along the line XX in FIG. 15 is a view taken in the direction of arrows YY in FIG. FIG. 16A is a transverse plan view of the main part showing the slide support part of the second connection control means, and FIG. 16B is a longitudinal front view of the main part showing the slide support part. FIG. 17 is a side view of the main part for explaining the abnormal operation of the second connection control means. 18A and 18B are schematic plan views showing the traveling state of the transport traveling body in the horizontal turn path portion in another embodiment.

  In FIG. 1, the transport traveling body 1 is composed of three carriages 2 to 4 in series in the traveling direction, and the central carriage 3 is longer in the traveling direction than the other carriages 2 and 4. It is a long main carriage that is used for the support of the workpiece W such as the car body and the work floor for the left and right sides of the workpiece W. The carriages 2 and 4 at the front and rear ends are the same in length. The sub-trolley is mainly used as a work floor for both front and rear ends of the work W. The travel path of the transport traveling body 1 is configured by combining a counterclockwise horizontal turn path portion 5, a straight traveling path portion 6, and a clockwise horizontal turn path portion 7.

  As shown in FIG. 2 to FIG. 4, the transport traveling body 1 has the same length as the entire length of the transport traveling body 1 and a pair of left and right provided along the left and right sides of the transport traveling body 1. Load bars 8 and 9 are provided. The load bars 8 and 9 are constituted by load bar units 8a to 8c and 9a to 9c which are divided into the respective carts 2 to 4 and attached to the bottom surface of the cart along the left and right sides of the respective carts 2 to 4. Yes. Each cart 2 to 4 is provided with four sets of four free wheels 10 to 12 each of which is a pair of left and right front and rear wheels that roll on the floor, and between the carts 2 and 3 adjacent to the front and rear and between the carts 3 and 4. Further, inter-cart connecting means 13 and 14 for connecting these two carts are provided.

  Each of the load bars 8a to 8c and 9a to 9c constituting the load bars 8 and 9 is a quadrangular prism, and two top surfaces near both ends in the length direction are attached to the bottom surfaces of the carriages 2 to 4. It is attached via 8d-8f and 9d-9f, and its left and right side surfaces are friction drive surfaces. The connecting means 13 and 14 between the carriages connect the three load bar units 8a to 8c and 9a to 9c in series in the traveling direction to assemble them into one load bar 8 and 9, respectively. 14a and 14b.

  The pair of left and right connecting units 13a and 13b constituting the inter-cart connecting means 13 between the carts 2 and 3 project upward from the stepped surface which is lower by one step at the front end of the load bars alone 8b and 9b fixed to the cart 3. It is composed of a vertical shaft 15 provided and a movable bearing member 17 connected to the rear ends of the load bars 8a, 9a fixed to the carriage 2 so as to be swingable up and down around the horizontal support shaft 16. The pair of left and right connecting units 14a and 14b constituting the connecting means 14 between the trucks 3 and 4 project upward from the stepped surface which is one step lower at the rear ends of the load bars 8b and 9b fixed to the carriage 3. A vertical shaft 18 is provided, and a movable bearing member 20 is connected to the front end portions of the load bars 8c and 9c fixed to the carriage 4 so as to swing up and down around the horizontal support shaft 19. At the free end of the movable bearing member 17 on the load bar unit 8a, 9a side, there is a connecting hole 17a that can be fitted and removed in the vertical direction with respect to the vertical shaft 15 on the front end of the load bar unit 8b, 9b. The free end portion of the movable bearing member 20 on the load bar unit 8c, 9c side is provided so as to be vertically detachable with respect to the vertical shaft 18 on the rear end portion of the other load bar unit 8b, 9b. A connecting hole 20a is provided.

  The movable bearing members 17 and 20 at the ends of the load bars 8a and 8c and 9a and 9c and the lower ends provided with the vertical shafts 15 and 18 at both ends of the load bars 8b and 9b are movable bearings. When the connecting holes 17a and 20a of the members 17 and 20 are in a connected state fitted to the opposite vertical shafts 15 and 18, the three load bar single units 8a to 8c and 9a to 9c connected in series are arranged on both left and right side surfaces ( Friction driving surface) and upper and lower side surfaces are substantially flush with each other so as to form a single rectangular column-shaped load bar 8, 9. When the connecting holes 17a and 20a of the movable bearing members 17 and 20 of the connecting units 13a and 13b and 14a and 14b are connected to the vertical shafts 15 and 18 on the other side, the movable bearing members 17 and The load bar single body 8a, 8c and 9a, 9c having 20 and the load bar single body 8b, 9b having vertical shafts 15 and 18 are horizontally swingable around the vertical shafts 15 and 18.

  The transport traveling body 1 is provided with two left and right guide roller rows 21 and 22 provided on a center line along the length direction of the load bars 8 and 9. Each of the guide roller rows 21 and 22 is an intermediate position roller provided so as to be rotatable around the axis of the vertical shafts 15 and 18 at a position immediately below the vertical shafts 15 and 18 of the connecting units 13a and 13b and 14a and 14b. 21b, 21c and 22b, 22c, and both front and rear ends of the load bars 8, 9, that is, the front end portions of the load bar units 8a, 9a and the rear end portions of the load bar units 8c, 9c are rotatably provided around the vertical axis. The end position rollers 21a, 21d and 22a, 22d. The vertical shafts 15 and 18 constituting the connecting units 13a and 13b and 14a and 14b can be configured by extending the vertical support shafts supporting the intermediate position rollers 21b, 21c and 22b and 22c upward.

  As shown in FIG. 2 and FIG. 4, the straight traveling path portion 6 in the travel route of the transport traveling body 1 is used as travel guide means for traveling the transport traveling body 1 along the straight travel path section 6. Of the pair of left and right guide roller rows 21 and 22 of the traveling body 1 for conveyance, a groove-shaped guide comprising a pair of left and right rail members sandwiching the rollers 21a to 21d or 22a to 22d of at least one guide roller row from the left and right sides. A rail 23 and a pair of left and right wheel guide rails 24a and 24b for restricting the rolling path of the free wheels 10 to 12 of the carriages 2 to 4 are disposed. Further, the horizontal turn path portions 5 and 7 in the travel route of the transport traveling body 1 are counterclockwise as travel guide means for causing the transport travel body 1 to travel along the horizontal turn path portions 5 and 7. As shown in FIGS. 9 to 11 showing the horizontal turn path portion 5, one side of the pair of left and right guide roller rows 21 and 22 of the transport traveling body 1 that is positioned on the bending direction side of the horizontal turn path portions 5 and 7. A groove-shaped arc-shaped guide rail 25 comprising a pair of left and right rail members sandwiching the rollers 21a to 21d or 22a to 22d of the guide roller row 21 or 22 from both left and right sides is disposed. It should be noted that at least the horizontal turn path portions 5 and 7 of the guide roller row 21 or 22 can be smoothly entered into the arcuate guide rails 25 of the horizontal turn path portions 5 and 7 so that the rollers 21a to 21d or 22a to 22d can smoothly enter. It is desirable that a guide rail 23 connected to the arcuate guide rail 25 laid along the horizontal turn path portions 5 and 7 is laid in the terminal region of the straight path portion 6 connected to the entrance.

  As drive means for causing the transport traveling body 1 to travel along the travel path, friction drive means using a pair of left and right load bars 8 and 9 provided in the transport traveling body 1 is used. As shown in FIGS. 2 and 4, the friction drive means 26 is configured to rotate the friction drive wheel 26a and the backup roller 26b that sandwich the load bar 8 or 9 from the left and right sides, and the friction drive wheel 26a (not shown). And a conventionally known motor that applies a propulsive force to the transport traveling body 1 via the load bar 8 or 9 by the rotation of the friction drive wheel 26a. Thus, in the section in which the transport traveling body 1 travels at a constant speed and at regular intervals in the travel route of the transport traveling body 1, the friction drive means 26 has the entire length of the transport traveling body 1, that is, At intervals not longer than the entire length of the load bar 8 or 9, the load bars 8 or 9 are disposed on the moving path, and the transport traveling body 1 is pushed by the subsequent transport traveling body 1 so that each transport traveling body 1 is moved. In the case of a boosted traveling section in which the traveling is performed at a constant speed in a state where the front and rear are connected to each other, it is known that the friction drive means 26 is provided at two locations, the entrance and the exit of the section.

  As shown in FIGS. 9 to 11, the friction drive means 26 that travels and drives the transport traveling body 1 in the horizontal turn path portions 5 and 7 includes a pair of left and right load bars 8 and 9 of the transport traveling body 1, as shown in FIGS. Each load bar unit 8a to 8c or 9a to 9c is connected by connecting units 13a, 14a or 13b and 14b of the connecting means 13 and 14 between the carriages, located inside the horizontal turn path portions 5 and 7 in the bending direction. Although it arrange | positions so that the traveling body 1 for conveyance may be propelled via the load bar 8 or 9 of a continuous state, as shown in the figure, the path length of the circular arc guide rail 25 in the horizontal turn path parts 5 and 7 is shown. In the horizontal turn path portions 5 and 7 having a curvature that is approximately the same as the total length of the load bar 8 or 9 in the continuous state, the bending angle of the load bar 8 or 9 in the continuous state is relatively large. 5, Friction driving means 26A, 26B are disposed at the entrance and the exit of the vehicle, and the load bar 8 or 9 of the transporting traveling body 1 fed to the horizontal turn path portions 5, 7 by the friction driving means 26A at the entrance is friction driven at the entrance. Before leaving the means 26A, the friction drive means 26B at the outlet acts on the load bar 8 or 9 of the transport traveling body 1 so that the transport traveling body 1 is pulled out from the horizontal turn path portions 5 and 7. Is desirable.

  Of course, when the curvature of the horizontal turn path portions 5 and 7 is large and the path length of the arcuate guide rail 25 is sufficiently larger than the total length of the continuous load bar 8 or 9, the continuous load bar 8 Alternatively, since the bending angle of 9 is reduced, the friction drive means 26 can be disposed at one or a plurality of positions in the middle of the horizontal turn path portions 5 and 7. In any case, the friction drive wheel 26a and the backup roller 26b of the friction drive means 26, 26A and 26B for propelling the transport traveling body 1 in the horizontal turn path portions 5 and 7 are connected to the friction drive wheel 26a of the friction drive means 26. The backup roller 26b is configured to be able to hold the load bar 8 or 9 to be driven with a necessary pressure contact force while moving in the horizontal horizontal direction following the horizontal movement of the load bar 8 or 9 to be driven. Is done.

  As shown in FIGS. 9 to 11, the horizontal turn path portions 5 and 7 are provided with first connection control means 27 on the entrance side and second connection control means 28 on the exit side. The first connection control means 27 is a load bar 8 that moves outside the horizontal turn path portions 5, 7 among the pair of left and right load bars 8 or 9 of the transport traveling body 1 fed into the horizontal turn path portions 5, 7. Or the connection unit 13a, 14a or 13b, 14b of 9 is switched from the connected state to the disconnected state, and the second connection control means 28 is connected to the disconnected state by the first connection control means 27. 13a, 14a or 13b, 14b is switched from the disconnected state to the connected state. In order to enable control by these connection control means 27 and 28, the movable bearing members 17 and 20 of all the connection units 13a to 14b are set up at positions near their free ends as shown in FIGS. A cam driven roller 29 is pivotally supported in a cantilever manner by a horizontal support shaft parallel to the horizontal support shafts 16 and 19 that support the movable bearing members 17 and 20 on the outside of the support member provided. As shown in FIGS. 5 to 8, the control means 27 and 28 include the movable bearing members 17 and 20 of the connection units 13 a to 14 b to be controlled as the conveyance traveling body 1 travels. A cam rail 30 is provided for lifting a predetermined section from the horizontal lying posture and holding it in a disconnected posture.

  When the transport traveling body 1 travels along the straight path 6, all of the connecting units 13 a to 14 b of the inter-cart connecting means 13 and 14 are in a connected state, and the three carts 2 to 4 are connected in series. The transportation traveling body 1 in this state travels forward along the straight path portion 6 by the friction drive means 26 and enters the horizontal turn path portions 5 and 7 connected to the straight path portion 6. However, an operation when the traveling traveling body 1 travels in the clockwise horizontal turn path portion 7 among the horizontal turn path portions 5 and 7 will be described with reference to FIGS. 9 to 11.

  When the transport traveling body 1 reaches the position where the front end of the load bar 9 on the right side thereof receives the friction driving force by the friction driving means 26A provided at the entrance of the clockwise horizontal turn path section 7, the transport The traveling body 1 is fed into the clockwise horizontal turn path portion 7 by the friction drive means 26 </ b> A, but the end position roller 21 b positioned at the front end of the right guide roller row 22 is connected to the arc-shaped guide rail 25. After entering, the front side sub-car 2 starts to turn around the vertical axis 15 of the connecting unit 13b on the load bar 9 side with the central main car 3 in the clockwise direction of the horizontal turn path portion 7. Shortly before that, the cam driven roller 29 of the movable bearing member 17 in the opposite connection unit 13a rides on the cam rail 30 of the first connection control means 27. First connection control means 27 is provided.

  Accordingly, as the front auxiliary cart 2 of the transport traveling body 1 enters the clockwise horizontal turn path portion 7, as shown in FIG. 6A, the left load bar fixed to the front auxiliary cart 2 is secured. The movable bearing member 17 at the rear end of the single unit 8a is lifted by the cam driven roller 29 and the cam rail 30 of the first connection control means 27 and moves upward around the horizontal support shaft 16, and is fixed to the central main carriage 3. The left connecting unit 13a in the inter-cart connection means 13 is switched from the connected state to the disconnected state by detaching upward from the vertical shaft 15 at the front end of the left load bar unit 8b. While the left connecting unit 13a is switched to the disconnected state, that is, while the cam driven roller 29 rolls on the cam rail 30, the front auxiliary cart 2 of the transport traveling body 1 is rotated clockwise. Entering into the turn path portion 7, the front auxiliary cart 2 turns around the vertical axis 15 of the connecting unit 13 b on the side of the load bar 9 with the central main cart 3 and turns in the bending direction of the horizontal turn path portion 7. Thus, the rear end portion (movable bearing member 17) of the left load bar unit 8a fixed to the front sub-cart 2 is moved forward from the front end of the left load bar unit 8b fixed to the central main vehicle 3. become. Thereafter, the cam driven roller 29 of the left connection unit 13a is disengaged from the cam rail 30 of the first connection control means 27, and the movable bearing member 17 of the connection unit 13a is more forward than the vertical shaft 15 as shown in FIG. 6B. It will return to the original horizontal lying posture by gravity at a position far away. Although the detailed structure is not shown, each of the movable bearing members 17 and 20 of the connecting units 13a to 14b is inclined downward from at least the horizontal lying posture that is the extended posture of the load bars 8a, 8c and 9a, 9c. It is configured not to.

  As the transport traveling body 1 enters the clockwise horizontal turn path section 7, as shown in FIG. 9B, the outside (left side) of the inter-cart connection means 14 between the central main cart 3 and the rear sub-cart 4 is shown. After the connecting unit 14a reaches the position of the first connecting control means 27, as shown in FIGS. 6C and D, the inter-cart connecting means 14 between the front auxiliary cart 2 and the central main cart 3 described above. Basically, the connection unit 14a is switched to the disconnected state as the transport traveling body 1 travels in the same manner as the connection unit 13a outside (left side). The difference in operation when the front connection unit 13a and the rear connection unit 14a are switched to the disengaged state is that the cam driven roller 29 of the movable bearing member 17 is a horizontal point that is the fulcrum of the vertical movement of the movable bearing member 17. The cam driven roller 29 of the movable bearing member 20 is a fulcrum for the vertical movement of the movable bearing member 20, whereas the cam driven roller 29 of the movable bearing member 20 rides on the cam rail 30 relatively approaching from the side opposite to the side where the support shaft 16 is located. It is a point which rides on the cam rail 30 which approaches relatively from the side with the horizontal support shaft 19.

  When the transport traveling body 1 enters the clockwise horizontal turn path portion 7 by the control of the first connection control means 27, a pair of left and right couplings of the inter-cart connection means 13 and 14 of the transport traveling body 1 are connected. Of the units 13a, 13b and 14a, 14b, only the outer connecting units 13a, 14a opposite to the bending direction of the transport traveling body 1 are automatically and sequentially switched to the disconnected state. As shown in FIG. 10, a clockwise horizontal turn path portion in a state of being opened in a fan shape around the vertical shafts 15, 18 of the connection units 13 b, 14 b in the connection state located inside the bending direction of the transport traveling body 1. 7 will be driven. At this time, the transport traveling body 1 is a roller in the guide roller row 22 located inside the bending direction, that is, the intermediate position rollers 22b and 22c concentric with the vertical shafts 15 and 18 of the connected connection units 13b and 14b. Since the end position rollers 22a and 22d at the front and rear ends of the load bar 9 are guided by the arc guide rail 25, the load bar 9 can smoothly travel along the clockwise horizontal turn path portion 7.

  As shown in FIG. 10B, the rear end of the load bar 9 of the transport traveling body 1 traveling along the clockwise horizontal turn path portion 7 is disengaged from the friction drive means 26A at the entrance of the clockwise horizontal turn path portion 7. The front end of the load bar 9 reaches the friction drive means 26B at the outlet of the horizontal turn path section 7, and continues to travel in the direction of retreating from the horizontal turn path section 7 by receiving thrust from the friction drive means 26B. To do. As a result, as shown in FIG. 11A, of the connection units 13a and 13b of the inter-cart connection means 13 of the transport traveling body 1, the outer (left) connection unit 13a in the disconnected state is connected to the horizontal turn path portion 7. It passes through the position of the second connection control means 28 at the outlet. At this time, the transporting traveling body 1 travels while closing around the vertical shaft 15 of the inner connecting unit 13b in which the front sub-car 2 and the central main car 3 that are opened in a fan shape are connected.

  As shown in FIGS. 7A to 7C, the outer load bar unit 8a fixed to the front side sub-car 2 as the front side sub-car 2 retreats from the clockwise horizontal turn path part 7 to the straight path part 6. The front end of the outer load bar unit 8b fixed to the central main carriage 3 moves closer to the movable bearing member 17 of the connecting unit 13a extending rearward from the rear end in a horizontal lying posture. During this approaching movement, the cam driven roller 29 of the movable bearing member 17 of the connecting unit 13a rides on the cam rail 30 of the second connection control means 28 and is switched to the disconnected state. While the cam driven roller 29 rolls on the cam rail 30 of the second connection control means 28, the front end of the central main carriage 3 is in a straight running posture in contact with the rear end of the front auxiliary carriage 2, and the connection unit The vertical shaft 15 at the front end of the load bar unit 8b of the connection unit 13a is located directly below the connection hole 17a of the movable bearing member 17 in the posture of the connection release state on the load bar unit 8a side of 13a. Then, when traveling of the transport traveling body 1 proceeds and the cam driven roller 29 of the movable bearing member 17 comes off from the cam rail 30 of the second connection control means 28, as shown in FIG. The movable bearing member 17 that has been moved swings downward around the horizontal support shaft 16 due to gravity, the vertical shaft 15 is fitted into the connection hole 17a of the movable bearing member 17, and the connection unit 13a is returned to the connected state. .

  As shown in FIG. 11B, the front sub-car 2 of the transport traveling body 1 and the central main car 3 connected to the front sub-car 2 by a pair of left and right connecting units 13a, 13b of the inter-car connecting means 13 are turned clockwise. As shown in FIG. 8, when the rear auxiliary cart 4 is sent out from the path section 7 to the straight path section 6 and the rear side sub-cart 4 moves out of the clockwise horizontal turn path section 7, the second connection control means 28 moves between the carts. The connection unit 14a outside the connection means 14 is returned from the connection release state to the connection state. This action is caused by the second connection control means 28 releasing the connection unit 13a outside the inter-cart connection means 13 between the front sub-cart 2 and the central main car 3 as the transport traveling body 1 travels. This is basically the same as the operation when returning from the connected state to the connected state. The difference is that the cam driven roller 29 of the movable bearing member 17 has the horizontal support shaft 16 that is the fulcrum of the vertical movement of the movable bearing member 17. The cam follower roller 29 of the movable bearing member 20 rides on the cam rail 30 relatively approaching from the side, whereas the side where the horizontal support shaft 19 that is the fulcrum of the vertical movement of the movable bearing member 20 is located. It is a point which rides on the cam rail 30 which approaches relatively from the opposite side.

  As described above, the transport traveling body 1 travels in the clockwise horizontal turn path portion 7, and the left-handed horizontal turn path portion 5 also travels in the clockwise horizontal turn path portion 7. In the same manner as described above, the transport traveling body 1 entering the counterclockwise horizontal turn path portion 5 is bent by the counterclockwise horizontal turn path portion 5 of the pair of left and right connecting units 13a to 14b of the inter-cart connecting means 13 and 14. Since the connection units 13b and 14b located on the outer side (right side) opposite to the direction are sequentially switched from the connected state to the disconnected state by the first connection control means 27 at the entrance of the counterclockwise horizontal turn path portion 5, The counterclockwise horizontal turn passes with the carts 2 to 4 being fan-shaped around the vertical shafts 15 and 18 of the connected connection units 13a and 14a located inside the turning horizontal turn path portion 5 in the bending direction. When traveling from the left-handed horizontal turn path section 5 to the straight path section 6, the front and rear ends are adjacent to each other from the fan-shaped state when the carts 2 to 4 are opened in a fan shape. The connection units 13a and 14b are closed by the second connection control means 28 at the outlet of the left-handed horizontal turn path portion 5 and then closed. Sequentially return to the original connected state.

  In addition, although the traveling direction length of the front and rear sub-bogies 2 and 4 is shorter than the traveling direction length of the central main carriage 3, the load bar unit 8a to be divided and fixed to each carriage 2 to 4 is fixed. The lengths of the load bars 8a and 9a to 9c are adjusted to the lengths of the carriages 2 to 4 in the traveling direction, and the lengths of the load bars 8a and 8c and 9a and 9c are shortened and the lengths of the load bars 8b and 9b are reduced. If it is lengthened, the central main carriage among the individual load bars 8a to 8c or 9a to 9c on the inner side guided by the guide rail rows 21 or 22 when the transport traveling body 1 travels along the horizontal turn path portions 5 and 7. The distance by which the long load bar 8b or 9b fixed to 3 projects inward from the arc-shaped guide rail 25 is increased. Therefore, the long load bar unit 8b or the long load bar so that the transport traveling body 1 can be smoothly and smoothly traveled on the horizontal turn path portions 5 and 7 that travel with each of the carts 2 to 4 opened in a fan shape. In accordance with 9b, it is necessary to set the curvature of the horizontal turn path portions 5 and 7 large. In order to solve such problems, in the embodiment of the present invention, as shown in FIG. 2, the traveling direction between the rollers 21 a to 21 d of the guide roller row 21 and between the rollers 22 a to 22 d of the guide roller row 22. The intervals are substantially equal.

  That is, the lengths of the load bar units 8a, 8c and 9a, 9c fixed to the front and rear auxiliary carts 2, 4 are increased, and the lengths of the load bar units 8b, 9b fixed to the central main vehicle 3 are decreased. In addition, the load bars are configured so that the lengths of all the load bars 8a to 9c are substantially equal, and the load is extended in a cantilevered manner from the front and rear auxiliary carts 2 and 4 to the side where the central main cart 3 is located. At the extended ends of the bars 8a, 8c and 9a, 9c, not the intermediate position rollers 21b, 21c and 22b, 22c constituting the guide roller rows 21, 22, but the movable bearing members 17, 20 are supported. The intermediate position rollers 21b, 21c and 22b, 22c are provided on both ends of the load bar unit 8b, 9b, both ends of which are within the range of the length of the central main carriage 3, and projecting upward concentrically with these rollers. Drooping It is provided with a shaft 15 and 18.

  Further, the load bars 8 and 9 attached to the bottom surface of the carriage along the left and right sides of the transport traveling body 1 are such that the working oils and oils that have flowed down on the carriages 2 to 4 are on the left and right sides of the carriages 2 to 4. The load bars 8, 9 are not attached to the friction drive surfaces of the load bars 8, 9 when they are dropped from the sides, so that the trucks 2, 4, 4, 4, 4, 4, It is desirable to make it so that it may enter inward from both the left and right sides. Of course, if possible, the cam driven roller 29 pivotally supported on the movable bearing members 17 and 20 is preferably provided so as not to protrude outward from the left and right sides of the central main carriage 3 in plan view.

  When the pair of left and right connection units 13a to 14b of the inter-cart connection means 13 and 14 of the transport traveling body 1 are switched from the connected state to the disconnected state by the first connection control means 27, the connection units 13a to 14b are connected to each other. Since the connecting holes 17a, 20a of the movable bearing members 17, 20 are separated upward from the vertical shafts 15, 18 in the fitted state, the cam driven roller 29 of the movable bearing members 17, 20 is the first connection control means. As long as it rides on the 27 cam rails 30, it is possible to surely execute the desired connection release action. However, the pair of left and right connection units 13 a to 14 b of the inter-cart connection means 13, 14 of the transport traveling body 1 are connected to each other. When returning from the disconnected state to the connected state by the second connection control means 28, the cam driven roller 29 from the cam rail 30 of the second connection control means 28 is used. When the connecting holes 17a and 20a of the movable bearing members 17 and 20 in the disengaged state are not positioned at positions directly above the opposing vertical shafts 15 and 18 when disengaged, the movable bearings with respect to the vertical shafts 15 and 18 are located. There is a possibility that the connecting holes 17a and 20a of the members 17 and 20 cannot be smoothly and reliably fitted. In order to solve this problem, the vertical shafts 15 and 18 and the movable bearing members 17 and 20 of the connection units 13a, 14a or 13b and 14b in the disconnected state are moved in the region of the cam rail 30 of the second connection control means 28. When moving, it is conceivable to restrict the movement paths of the vertical shafts 15 and 18 and the movable bearing members 17 and 20 by the guide rail.

  The second connection control means 28 according to a specific embodiment of the above means will be described with reference to FIGS. 12 to 17. The second connection control means 28 includes the guide rail 31 and the front and rear two parts in addition to the cam rail 30. A pair of guide roller pairs 32 and 33 and a cam driven roller pressing movable body 34 are provided. The guide rail 31 is in a section where the cam driven roller 29 moves off the cam rail 30 and moves forward a certain distance from a short time before the cam driven roller 29 of the connecting units 13a, 14a or 13b, 14b rides on the cam rail 30. Consists of a pair of left and right rail members 35a, 35b sandwiching the intermediate position rollers 21b, 21c or 22b, 22c concentrically located directly below the vertical shafts 15, 18 of the connecting units 13a, 14a or 13b, 14b, The positions in the vicinity of both ends in the length direction are supported on the floor surface by the slide support portions 36, respectively. The entrance-side end portions of the rail members 35a and 35b are inclined so as to spread to the left and right outer sides, so that the intermediate position rollers 21b and 21c or 22b and 22c can be reliably guided between the rail members 35a and 35b. Yes.

  The slide support portion 36 for installing the guide rail 31 is fixed to the bottom surfaces of the rail members 35a and 35b, and is a left and right belt-like movable substrate 37 that integrates the rail members 35a and 35b, and bolts 38 at both ends on the floor surface. A belt-like fixed substrate 39 to be fixed, a belt-like slide support plate 40 fixed to the upper surface of the belt-like fixed substrate 39 and supporting the belt-like movable substrate 37 so as to be slidable in the horizontal direction, and bolts on both ends of the belt-like fixed substrate 39 The positioning cover member 42 fixes the horizontal sliding area of the belt-like movable substrate 37 on the belt-like slide support plate 40 within a certain range. Yes.

  Columnar members 43a and 43b project from the strip-shaped movable substrate 37 of the front and rear slide support portions 36 on the outside of the rail member 35a located directly below the cam rail 30, and the upper ends of the pair of front and rear columnar members 42a and 42b. A horizontal beam member 44 is installed between them. One end side of the cam rail 30 is fixed to the inner surface of one columnar member 43 a, and the other end side is connected and supported at an intermediate position of the horizontal beam member 44 via a connecting plate 45. The guide roller pairs 32 and 33 are pivotally supported around a vertical axis by a pair of left and right bearings 46a and 46b fixed to the outside of the rail members 35a and 35b at the inner positions of the two front and rear slide support portions 36. The load bar unit 8a to 8c or 9a to 9c is composed of a pair of left and right rollers 32a, 32b and 33a, 33b and has intermediate position rollers 21b, 21c or 22b, 22c guided by the guide rail 31 below the end portion. Is sandwiched from both the left and right sides to regulate the movement route.

  The cam follower roller push-down movable body 34 is disposed at a position farther away from the cam rail 30 and in an extension region of the cam rail 30 in a plan view, and the horizontal beam is arranged on the end side near the cam rail 30. A belt-shaped cam plate 48 that is supported on the side surface of the member 44 by a horizontal support shaft 47 in the left-right direction so as to be able to swing up and down within a certain range and covers the moving path of the cam driven roller 29 that is detached from the cam rail 30. I have. When the belt-like cam plate 48 is at the lower limit position of its vertical swing range, it is above the movement locus of the cam driven roller 29 during normal operation and is free from the lower end of the horizontal support shaft 47. On the side, an action portion 48a that approaches the upper side of the movement locus of the cam driven roller 29 during the normal operation is provided.

  According to the second connection control means 28 having the above-described configuration, as described above, the connection units 13a, 14a or 13b, 14b of the inter-cart connection means 13, 14 are released by the cam driven roller 29 and the cam rail 30. When switching from the state to the connected state, from the stage where the cam driven roller 29 rolls on the cam rail 30 to the stage where the cam driven roller 29 comes off the cam rail 30 and the switching operation ends, the connecting unit 13a. , 14a or 13b, 14b, the moving path of the load bar unit 8a, 8c or 9a, 9c having the movable bearing members 17, 20, and the moving path of the load bar unit 8b or 9b having the vertical shafts 15, 18 in other words. The vertical shafts 15 and 18 of the connecting units 13a and 14a or 13b and 14b and the movable bearing members 17 and 20 are transferred. Path, can be precisely regulated in the left-right transverse direction with respect to the travel path direction. Of course, when the rollers 21a to 21d or 22a to 22d constituting the left and right guide roller rows 21 or 22 of the transport traveling body 1 pass the position of the second connection control means 28, the second connection control is performed. The movement path is regulated by moving between the rail members 35a and 35b of the guide rail 31 provided in the means 28.

  As described above, in particular, the guide that the second connection control means 28 includes the movement path of the movable bearing members 17 and 20 that do not have the rollers 21a to 21d or 22a to 22d whose movement path is regulated by the guide rail 31 immediately below. By being restricted by the roller pairs 32 and 33, the operation of switching the connecting units 13a, 14a or 13b, 14b of the inter-cart connecting means 13, 14 from the disconnected state to the connected state by the cam driven roller 29 and the cam rail 30 is ensured. Can be done.

  When the movement path of the load bar unit 8a to 8c or 9a to 9c is restricted by the guide rail 31 provided in the second connection control means 28 and the two pairs of guide rollers 32 and 33 in the front and rear, the load bar actually Since the single units 8a to 8c or 9a to 9c are in the process of moving from the arc-shaped horizontal turn path portions 5 and 7 to the straight path portion 6, the guide rail 31 having two pairs of front and rear guide roller pairs 32 and 33 is provided. If it is stationary and fixed to the ground, between these guide rails 31 and rollers 21a to 21d or 22a to 22d, or two pairs of guide rollers 32 and 33 and load bar units 88a to 8c or 9a Unreasonable friction arises between -9c and smooth operation cannot be expected. However, in this embodiment, the entire second connection control means 28 is slid in the horizontal direction within the allowable range of horizontal sliding of the belt-like movable substrate 37 on the belt-like slide support plate 40 by the slide support portions 36 at two front and rear positions. Since it is supported in a possible state, the entire second connection control means 28 slides in the acting direction of the force by the horizontal force applied to the guide rail 31 and the guide roller pair 32, 33, and absorbs the force. As a result, the intended release of connection can be performed smoothly and reliably.

  Further, in the second connection control means 28, when the cam driven roller 29 is detached from the cam rail 30, the movable bearing members 17 and 20 together with the cam driven roller 29 swing downward around the horizontal support shafts 16 and 19 due to gravity. Thus, the connecting units 13a, 14a or 13b, 14b return to the connected state. When the second connection control means 28 operates normally in this way, as shown in FIG. The lowering movable body 34 is on the upper side of the movement locus of the cam driven roller 29 and does not interfere with the cam driven roller 29. However, even if the movable bearing members 17 and 20 around the horizontal support shafts 16 and 19 move poorly and the cam driven roller 29 is detached from the cam rail 30, the movable bearing members 17 and 20 remain in a disconnected state. When moving or when the movable bearing members 17 and 20 do not move down to the connected state at the lower limit position, as shown in FIG. 17, the cam driven roller 29 is operated by the movable member 34 for pressing the cam driven roller. Since the downward reaction force acts on the cam driven roller 29 while trying to pass while pushing up 48a, the movable bearing members 17 and 20 are forcibly pushed down together with the cam driven roller 29, and are surely switched to the connected state. Of course, in a situation where the downward reaction force received from the cam follower roller pressing movable body 34 does not cause the movable bearing members 17 and 20 to move down to the coupled state at the lower limit position, the cam follower roller 29 reverses the cam follower roller. Since the pressing movable body 34 is pushed up and swings upward around the horizontal support shaft 47, the limit for detecting the upward swing of the cam driven roller pressing movable body 34 at this time is detected. If a detector such as a switch is used in combination, it is possible to automatically detect an abnormal situation in which the connection units 13a, 14a or 13b, 14b are not returned to the connected state by the second connection control means 28, and take measures.

  The second connection control means 28 can be used as the first connection control means 27 as it is. However, in the first connection control means 27, as described above, the vertical shafts 15 and 18 and the movable bearing members 17 and 20 of the connection units 13a and 14a or 13b and 14b in the connected state are located directly below them. Since the position rollers 21b, 21c or 22b, 22c are guided by the guide rail 31 and the movement path is restricted, the front and rear two pairs of guide rollers 32, 33 can be omitted.

  In the present invention, the load bars 8 and 9 that basically provide the friction drive surface are not essential components, and depending on the driving means for causing the transport traveling body 1 to travel along the travel route, The bars 8 and 9 may be omitted. In this case, the end position rollers 21a, 21d and 22a, 22d of the left and right guide roller rows 21, 22 can be supported on the bottoms of the front and rear auxiliary carts 2, 4 using appropriate bearings. The intermediate position rollers 21b, 21c and 22b, 22c, the vertical shafts 15 and 18, and the movable bearing members 17 and 20 are centered using members corresponding to both end portions of the load bar unit 8b and 9b provided with them. It can be attached to the bottom of the main carriage 3. Even when the friction drive means 26, 26 </ b> A, 26 </ b> B are used, the configuration is not limited to the configuration in which the load bars 8, 9 are provided on the left and right sides of the transport traveling body 1. For example, it is possible to use one load bar that is divided and attached to each carriage 2 to 4 of the transport traveling body 1. The mounting position of one load bar in this case may be the center position in the width direction of the transport traveling body 1, or may be either one of the left and right sides.

  In FIG. 18, one load bar 49 consisting of load bars 49a to 49c divided for each of the carts 2 to 4 is attached only to one side of each of the carts 2 to 4 (the side with the connecting units 13b and 14b). An example is shown. As shown in FIG. 18A, in the counterclockwise horizontal turn path portion 50 in which the transport traveling body 1 travels in a direction in which the load bar 49 is inward of the bending direction, the inner load bar 49 in the counterclockwise horizontal turn path portion 50. Friction driving means 51A and friction driving means 51B that frictionally drive the load bar 49 with the load bar 49 interposed therebetween are arranged at the entrance and exit of the moving path, and the load bar 49 is located outside in the bending direction as shown in FIG. 18B. In the clockwise horizontal turn path portion 52 where the transport traveling body 1 travels in the direction, the load bar 49 is sandwiched between the entrance and exit of the moving path of the outer load bar 49 in the clockwise horizontal turn path portion 52. Friction driving means 53A for friction driving and friction driving means 53B may be provided. Also in this embodiment, although not shown in the figure, the connecting means 13 and 14 between the carriages, the left and right guide roller rows 21 and 22, and the horizontal turn path portions 50 and 52 are arranged at the entrance and exit. The first and second connection control means 27 and 28 are used in the same manner as in the previous embodiment. The connecting units 13a and 14a of the connecting means 13 and 14 between the carriages and the rollers 21a to 21d of the guide rail row 21 required on the side of the truck where the load bar 49 is not provided are provided in the manner described above. I can do it.

  In the clockwise horizontal turn path portion 52 shown in FIG. 18B, the outer sides of the carriages 2 to 4 are frictionally driven when viewed from the center of the bending of the clockwise horizontal turn path portion 52. The force is reliably transmitted to the positions of the connecting units 13b and 14b between the carriages 2 to 4 guided by the arc-shaped guide rail 25, and the carriages 2 to 4 smoothly travel on the clockwise horizontal turn path portion 52. In order to make it possible, the curvature of the clockwise horizontal turn path portion 52 is increased, and the friction drive means may be disposed at an intermediate position of the clockwise horizontal turn path portion 52 as necessary.

  In the transport device using the coupled cart of the present invention, the counterclockwise horizontal turn path portion and the clockwise horizontal turn path portion can be freely incorporated in the travel path of the transport traveling body composed of a plurality of carts in series in the travel direction. It is a transfer device with a high degree of freedom in the layout of the transfer route, and can be used for transferring the car body in the car assembly line.

DESCRIPTION OF SYMBOLS 1 Transporting body 2, 4 Sub-trolley 3 Central main carriage 5, 7, 50, 52 Horizontal turn path part 6 Straight path part 8, 9, 49 Load bar 8a-8c, 9a-9c, 49a-49c Single load bar 10 to 12 universal wheels 13 and 14 bogie connection means 13a to 14b connection units 15, 18 vertical shafts 16, 19, 47 horizontal support shafts 17, 20 movable bearing members 17a, 20a connection holes 21, 22 guide roller rows 21b, 21c , 22b, 22c Intermediate position rollers 21a, 21d, 22a, 22d End position rollers 23 Groove-shaped guide rails 24a, 24b for straight travel paths Wheel guide rails 25 for straight travel paths 25 Arc-shaped guide rails 26 for horizontal turn paths , 26A, 26B, 51A, 51B, 53A, 53B Friction drive means 27 First connection control means 28 Second Connection control means 29 Cam driven roller 30 Cam rail 31 Guide rail added to second connection control means 32, 33 Guide roller pair 34 Cam driven roller push-down movable body 36 Slide support portion 37 Band-shaped movable substrate 39 Band-shaped fixed substrate 40 Band-shaped Slide support plate 42 Positioning cover member 48 Strip cam plate

Claims (9)

  In a transport device using a coupled cart comprising a plurality of carriages in series in a running direction and a carriage traveling body provided with a coupling means between carriages, and a driving means for causing the carriage traveling body to travel along a traveling path. The inter-cart connecting means comprises a pair of left and right connecting units that individually connect the left and right sides of the cart adjacent to the front and rear, and each connecting unit connects the left and right sides of the cart adjacent to the front and rear around the vertical axis. It is configured to be able to switch between a connected state allowing relative horizontal turning and a disconnected state, and at the entrance side of each horizontal turn path portion provided in the travel path, there is a transport traveling body entering the horizontal turn path section. A first connection control means for operating at least one of the pair of right and left connection units between the carriages is provided, and the bending of the horizontal turn path portion is performed by operating the first connection control means. The connecting unit on the inner side is connected and the connecting means on the outer side in the bending direction of the horizontal turn path part is in a disconnected state, and the transport traveling body enters the horizontal turn path part. , Conveyor equipment using a connected cart.   In the straight path portion in the travel route, the first traveling control means is configured such that the transport traveling body travels in a state where all the connection units are connected, and the first connection control means provided on the entrance side of the horizontal curve route portion includes Of the pair of left and right connecting units, the connecting unit on the opposite side to the bending direction of the horizontal curve path portion is switched from the connected state to the disconnected state. The connection cart utilization according to claim 1, wherein a second connection control means is provided for returning the connection unit, which is switched to the connection release state on the entrance side of the horizontal curve path portion, to the connection state. Transport device.   The connecting unit includes the vertical shaft fixed to one carriage, a movable bearing member that can be moved up and down provided on the other carriage so as to be freely fitted to and detached from the vertical shaft, and the movable bearing member. The first connection control means and the second connection control means are connected to each other by acting on the cam follower and detaching the movable bearing member upward from the vertical shaft by a predetermined interval. The conveying apparatus using a connecting cart according to claim 2, comprising a cam rail held in a released posture.   The transport traveling body is provided with two left and right guide roller rows, and each guide roller row is an intermediate portion provided rotatably around the axis of the vertical axis at a position immediately below the vertical axis of each connecting unit. A position roller, and an end position roller that is rotatably provided around a vertical axis at both front and rear ends of the transport traveling body, and the two straight guide roller rows on the straight path portion of the travel route. Linear guide rails for guiding the traveling body for transportation through each roller of at least one of the guide roller rows are laid, and the horizontal curve path portion of the travel path is located on the inner side in the bending direction. The conveyance apparatus using a connecting cart according to any one of claims 1 to 3, wherein an arcuate guide rail is provided to guide the conveyance traveling body only through each roller of the roller array. The first connection control means, the second connection control means, or the first second both connection control means regulates the movement path of each roller of the guide roller row on the side where the connection unit controlled by these connection control means is present. The conveyance apparatus using a connecting cart according to claim 4, wherein a guide rail is additionally provided. The drive means includes a friction drive load bar attached to the transport traveling body so as to be continuous over its entire length, and a friction drive wheel disposed on the travel path side and rotating in pressure contact with the load bar. It is composed of a friction drive unit, and the load bar is composed of at least one of the left and right sides of each carriage and a plurality of load bars that are divided for each carriage and serially arranged in the traveling direction. Are connected to each other by a vertical axis of the connecting unit so as to be horizontally rotatable. The drive means includes a friction drive load bar attached to the transport traveling body so as to be continuous over its entire length, and a friction drive wheel disposed on the travel path side and rotating in pressure contact with the load bar. It is composed of a friction drive unit, and the load bar is composed of at least one of the left and right sides of each carriage and a plurality of load bars that are divided for each carriage and serially arranged in the traveling direction. The transport device using a connection cart according to claim 2 , wherein the transport units are connected to each other by a vertical shaft of the connection unit so as to be able to turn horizontally . The second connection control means is provided with a pair of guide rollers that sandwich the load bar unit on the connection unit side controlled by the second connection control means from both the left and right sides and restrict the movement path thereof. 8. A transport device using the connecting cart according to 7 . The said friction drive load bar is a conveyance apparatus using the connection trolley | bogie of any one of Claims 6-8 attached to the right-and-left both sides of the traveling body for conveyance.

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