JP6065282B2 - 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, when the reference numerals used in the description of the embodiment are shown in parentheses, a plurality of carriages (2 to 4) in series in the traveling direction and the means for connecting the carriages (5, 6) In the transfer device comprising the transport traveling body (1) comprising the transport traveling body (1) and the guide means for causing the transport traveling body (1) to travel along the travel route, the inter-cart connection means (5, 6) The two links (26, 27/28) whose both ends are pivotally supported by vertical support shafts (26a to 27b / 28a to 29b) at the ends of the left and right sides of the two front and rear carts to be connected to each other. 29), and when the two front and rear carts connected by the inter-cart connecting means (5, 6) are adjacent to each other in the straight direction, The two links (26, 27/28, 29) overlap each other in a direction perpendicular to the straight direction of the carriage, and overlap the vertical support shafts (26a to 26a-29a, 29) 27b / 28a-29b) are arranged concentrically, and the guide means is laid on the left and right guide roller rows (34, 35) and on the travel route side of the transport traveling body (1). And guide rails (36 to 38) for guiding at least one of the two left and right guide roller rows (34, 35). The two left and right guide roller rows (34, 35) When the trolleys (2 to 4) are adjacent to each other in the straight direction, the two vertical links (26a to 27b / 28a to 26a, 27b, 28a to 26a, 27/28, 29) are concentric with each other. 29b) is an intermediate roller (32b, which is pivotally supported by one of the two front and rear carriages connected by the two links (26, 27/28, 29) so as to be rotatable around a vertical axis concentric with 32c / 33b, 33c) and this intermediate roller (32b, 32c / 33b, 33c) The carriages (2, 4) at the front and rear ends are pivotally supported around the vertical axis so that they are positioned on a straight line parallel to the straight direction of the carriage. It consists of end rollers (32a, 32d / 33a, 33d).

  According to the configuration of the present invention described above, when the front cart moves in the straight direction of the rear cart, the two links of the inter-cart connecting means connecting the two carts in the front and rear direction are Since the vertical support shafts that are perpendicular to the straight direction of the carriage and overlap vertically and support both ends of both links are concentric with each other, the two carriages are adjacent to each other. It is in a state that it can only go straight on as a single unit, and the rear cart does not move backward or swing left and right laterally with respect to the front cart, and all the carts in series travel straight ahead. Become. In addition, when the front carriage moves in the left-right lateral direction, the two links of the inter-cart connecting means that connect the front carriage and the rear carriage are connected to the front carriage. One link that is pivotally supported by the front carriage outside the turning direction is integrated with the front carriage and around the vertical support shaft that is concentric with each other and located inside the turning direction. Can be opened together with the rear carriage so that the front carriage can change its direction to the left or right with respect to the rear carriage.

  As described above, according to the configuration of the present invention, by simply guiding each carriage of the transport traveling body so as to be able to travel along the traveling path, a plurality of carriages in series on the straight path are integrated, The kite can also be driven as if it were one long bogie, and on each horizontal turn path that is counterclockwise and clockwise, each bogie is placed between the bogies that are inside the bend of the horizontal turn path. Since it can run smoothly in a fan-shaped open state around the connecting shaft (vertical support shaft), it incorporates both a left-curved horizontal curve path section and a right-curved horizontal curve path section, and is used for transportation. The driving route can be laid out freely. Therefore, even for a large transport traveling body that has a long overall length that cannot be constructed without connecting a plurality of carriages in series, the curvature of the horizontal turn path portion is reduced, the path length is shortened, and the occupied floor area is reduced. Help to make it smaller. Moreover, according to the configuration of the present invention, the pair of left and right connecting units provided on the left and right side portions between the carriages is connected to one connecting unit in front of the horizontal turn path portion according to the bending direction of the horizontal turn path portion. In this situation, there is no need for a mechanism to switch the connected unit to the connected state, and the other connected unit to the disconnected state, and its control is completely unnecessary, which not only simplifies the overall configuration, but also prevents the control system from being bent. Can also be avoided.

  Also, since the front and rear carriages are always connected via two links, as a driving means for propelling the transport traveling body, the front transport traveling body is boosted by the rear transport traveling body. Not only the type of driving means, but also a driving means of a type that pulls the rear carriage by the front carriage can be used without any problem. In addition, when the transporting traveling body travels along the horizontal curve path portion, each cart is connected by a connecting shaft (vertical support shaft) that is inside the bending direction in the same manner as when traveling along the straight path portion. In this state, the driving means for causing the transport traveling body to travel along the horizontal curve path portion can be used in either a boosting type or a pulling type as in the straight path path portion.

  In carrying out the present invention, naturally, guide means for moving the transporting traveling body (each carriage) along the traveling route is necessary. As this guide means, for example, conventionally well-known guide 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 the case of carrying out the above-described transporting device using the connecting cart according to the present invention, the two links (26, 27/28, 29) of the inter-cart connecting means (5, 6) are connected before and after being connected by this link. When both trolleys (2,3 / 3,4) are adjacent to each other in a straight direction, one of the trolleys (2,3 / 3,4) adjacent to the front and rear of the trolley (3) It can be arranged at a position that enters the lower side. According to this configuration, even if a configuration in which the central cart is a large cart with a long running direction supporting the object to be conveyed is compared with the carts at both the front and rear ends of the cart, The distance between the rollers in the two left and right guide roller rows is made equal, and the amount of overhang projecting toward the center of the turn of the horizontal turn path portion is equalized when traveling on the horizontal turn path portion. The configuration can be adopted.

  Also, rod-like members (9-11 / 12-14) are attached in two rows along the left and right sides of each carriage (2-4), and two links (5,6) between the carriages (5,6) 26, 27/28, 29) end portions of the end portions adjacent to the front and rear of the rod-shaped members (9-11, 12-14) are respectively above the vertical support shafts (26a-27b / 28a-29b). The intermediate rollers (32b, 32c / 33b, 33c) of the two guide roller rows (34, 35) that are axially supported are the end portions adjacent to the front and rear of the rod-like members (9-11 / 12-14) The end roller (32a, 32d / 33a, 33d) is supported on the lower side of either one of the rod-like members (9, 11/12, 14) of the carriages (2, 4) at the front and rear ends. It can be pivotally supported below the free end. According to this configuration, since the inter-cart connecting means and the left and right two guide roller rows can all be attached to a pair of left and right rod-like members attached to each cart, the inter-cart connecting means and the two right and left rows are arranged. Compared to the case where each component for constituting the guide roller row must be individually attached to the carriage, the assembling work becomes easier and the assembly can be performed with high accuracy.

  The above configuration can be easily implemented with the following configuration. That is, the ends of the rod-shaped members (9, 10/10, 11/12, 13/13, 14) adjacent to each other in the front-rear direction overlap and are concentric with the vertical support shafts (26a to 27b / 28a to 29b). When the trolleys (2-4) are adjacent to each other in the straight direction, the left and right rows of rod-shaped members (9-11 / 12-14) (1) two left and right load bars for friction drive that can be bent horizontally at the position of the vertical support shafts (26a to 27b / 28a to 29b) that are continuous over the entire length and located between the front and rear adjacent carts ( 7, 8), and one end of the lower link (26, 28) of the two links (26, 27/28, 29) is a rod-shaped member (9, 11) to be pivotally supported. The upper ends (9d, 11d) of the shaft are directly supported by the vertical support shafts (26a, 28a), and the other end of the link (26, 28) is below the rod-shaped member (13) to be supported. The upper ends of the long vertical support shafts (26b, 28b) erected from the side ends (13d, 13e) are supported on both ends of the upper link (27, 29). Bearing members (10f, 10g, 12e, 14e) which are attached to positions away from the ends of the rod-like members (10, 12, 14) to be supported and extend to the upper side of the lower links (26, 28) ), The lower end (13d, 13e) of the rod-shaped member (13) that is supported by the vertical support shaft (27a, 27b / 29a, 29b) and the long vertical support shaft (26b, 28b) is erected. A notch groove (12f, 14f) into which the long vertical support shaft (26b, 28b) is fitted is formed in the upper end portion (12d, 14d) of the rod-shaped member (12, 14) that overlaps the Of the two left and right rows of load bars (7, 8), the friction traveling wheels (21a) disposed on the travel path side so as to be in pressure contact with at least one side of the load bar, A drive means (22) for running is configured.

  The travel route of the transport traveling body (1) is preferably configured as follows. That is, the travel path of the transport traveling body (1) is configured by a combination of the straight path part (39, 41, 43), the counterclockwise horizontal turn path part (40), and the clockwise horizontal turn path part (42). Each of the horizontal turn path portions (40, 42) includes guide rollers located on the inner side in the bending direction of the horizontal turn path portions (40, 42) in the two left and right guide roller rows (34, 35). Arc guide rails (37, 38) that guide each roller in the row (34/35) are laid, and in the upper area of the straight path section (41, 43), the upper horizontal turn path section ( (40, 42), the straight guide rails (36L, 36R) connected to the arc-shaped guide rails (37, 38) laid in the lower path area (39, 41) Lay the straight guide rail (36L, 36R) connected to the circular arc guide rail (37, 38) laid on the lower horizontal turn path (40, 42) Straight running guy in the upper area When the guide rail for straight travel in the lower area is on the left and right sides, the straight guide rails (36L, 36R) in both areas are reversed left and right. When the position is in the position, the guide rail for straight travel in both areas (the guide rail for both regions so that the exit position of the guide rail for straight travel (36L) and the entrance position of the guide rail for straight travel (36R) on the lower side are not separated in the traveling direction) Install 36L, 36R).

FIG. 1A is a plan view showing the arrangement of functional components of the transport traveling body, and FIG. 1B is a side view of the transport traveling body. 2A and 2B are plan views showing a pair of left and right rod-like members attached to each carriage of the transport traveling body and two links constituting the carriage connecting means. 3A and 3B are side views showing an attachment state of a lower link interposed between a central carriage and front and rear carriages. 4A and 4B are side views showing an attachment state of the upper link interposed between the central carriage and the front and rear carriages. FIG. 5A is a longitudinal rear view showing the connecting means between the front carts, and FIG. 5B is a longitudinal rear view showing the connecting means between the rear carts. 6A is a longitudinal side view of the front side bogie connection means at the position of the left vertical support shaft, FIG. 6B is a vertical side view of the bogie connection means at the right side vertical support shaft, and FIG. 6C is the rear side. FIG. 6D is a vertical side view of the inter-cart connecting means at the position of the left vertical support shaft, and FIG. 6D is a vertical side view of the inter-cart connecting means at the position of the right vertical support shaft. FIG. 7A is a plan view showing a state in which the transport traveling body is traveling straight, FIG. 7B is a plan view showing a traveling state in a counterclockwise horizontal turn path portion of the transport traveling body, and FIG. It is a top view which shows the driving | running | working state in the horizontal turn path | route part of the clockwise rotation of a traveling body. FIG. 8 is a plan view showing an example of the layout of the travel route of the transport traveling body.

  In FIG. 1, the transport traveling body 1 is configured by a carriage having three horizontal widths in series in a running direction, which is a front end carriage 2, a central carriage 3, and a rear end carriage 4 in series. The central carriage 3 supports a work such as an automobile body in an automobile assembly line, and has a length in the traveling direction such that both front and rear ends of the work project on the front and rear carriages 2 and 4. The trolleys 2 and 4 at both front and rear ends have the same length in the traveling direction and are shorter than the length of the central trolley 3. The front truck 2 and the central truck 3 are connected by a front inter-car connecting means 5, and the central car 3 and the rear car 4 are connected by a rear inter-car connecting means 6.

  The transport traveling body 1 is provided with a pair of left and right load bars 7 and 8 that are continuous over the entire length of the transport traveling body 1 on the bottom side of the left and right sides of the transport traveling body 1. These load bars 7 and 8 are composed of prismatic rod-shaped members 9 to 11 and 12 to 14 divided for each of the carts 2 to 4, and each of the rod-shaped members 9 to 14 corresponds to each of the carts 2 to 4. It is attached to the lower side of the left and right sides through two front and rear attachment members 15-20. The pair of left and right load bars 7 and 8 includes a friction drive means 22 including a friction drive wheel 21 a and a backup roller 21 b that are pressed against at least one of the load bars 7 and 8 from both the left and right sides, and the transport traveling body 1. It constitutes drive means for running. In addition, two sets of left and right front and rear two sets of free wheels 23 to 25 that roll on the floor surface are attached to the bottoms of the carriages 2 to 4.

  The rod-like members 9 to 14 constituting the load bars 7 and 8 will be described below in detail with reference to FIGS. 2 to 6. The rod-like members 9 to 14 a and the end members 9 b and 9 c fixed to the front and rear ends thereof. 14b, 14c, the rear end member 9c of the rod-shaped member 9 attached to the carts 2, 4 at the front and rear ends, the front end member 11b of the rod-shaped member 11, the rear end member 12c of the rod-shaped member 12, and the rod-shaped member 14 The front end member 14b is formed with upper end arc-shaped upper bearing portions 9d, 11d, 12d, 14d extending from the upper half, and both front and rear ends of the rod-like members 10, 13 attached to the remaining central cart 3 The members 10b, 10c, 13b, and 13c are formed with tip-side arc-shaped lower bearing portions 10d, 10e, 13d, and 13e extending from the lower half. Accordingly, when the carriages 2 to 4 are in a straight line direction and are adjacent to each other (the state shown in FIG. 1), the end members 9b, 9c to 14b, and 14c of the rod-like members 9 to 14 are adjacent to each other in the front-rear direction. The end members 9c, 10b / 10c, 11b / 12c, 13b / 13c, and 14b are arranged so that the upper bearing portions 9d, 11d, 12d, and 14d and the lower bearing portions 10d, 10e, 13d, and 13e are vertically aligned with each other. The overlapping and series-connected rod-shaped members 9 to 11 and 12 to 14 form load bars 7 and 8 having substantially the same height and width over the entire length and continuous left and right side surfaces.

  The front bogie connection means 5 is composed of a lower link 26 and an upper link 27 made of a strip plate material having substantially the same length as the horizontal width of each of the carts 2 to 4. The lower link 26 is pivotally supported at its left end portion by a vertical support shaft 26a directly on the center of the upper bearing portion 9d of the rear end member 9c of the left bar member 9 of the front end carriage 2, and the right end portion is The front end member 13 b of the left side bar-shaped member 13 of the carriage 3 is supported at a position higher than the upper surface of the bar-shaped member 13 by the upper end portion of the long vertical support shaft 26 b erected from the center of the lower bearing portion 13 d. The upper link 27 is mounted on the front end member 10b of the left bar-shaped member 10 of the central carriage 3 via a spacer, and extends in a cantilevered manner up to a position above the lower bearing portion 10d of the front end member 10b. It is supported by a vertical support shaft 27a on the upper side of the bearing member 10f, and the right end portion is attached to the front end member 12c of the right bar-like member 12 of the front end carriage 2 via a spacer, so that the upper bearing of the front end member 12c. It is supported by a vertical support shaft 27b on the upper side of a bearing member 12e that extends in a cantilever manner up to a position above the portion 12d.

  Therefore, when the front end cart 2 and the central cart 3 are adjacent to each other in the straight direction, the upper and lower links 26 and 27 overlap each other, and as shown in FIGS. 5A, 6A, and 6B, the upper links 27, both ends of the lower link 26 enter below the bearing members 10f, 12e that support both ends of the shaft 27, the vertical support shafts 26a, 26b that support both ends of the lower link 26, and both ends of the upper link 27 are pivoted. The vertical support shafts 27a and 27b to be supported are positioned concentrically with each other. At this time, the upper bearing portion 12d of the rear end member 12c of the right rod member 12 of the front end carriage 2 enters the lower right side of the lower link 26. The long vertical support shaft 26b that supports the shaft interferes with each other. In order to avoid this interference, as shown in FIG. 2A, a cutout groove 12f is formed in the upper bearing portion 12d from the tip of the arc shape to the center portion, and a long vertical support is provided in the cutout groove 12f. The intermediate portion of the shaft 26b is configured to enter.

  The rear bogie connection means 6 is composed of a lower link 28 and an upper link 29 made of a strip plate material having substantially the same length as the horizontal width of each of the bogies 2 to 4. The lower link 28 is pivotally supported at its left end by a vertical support shaft 28a directly on the center of the upper bearing portion 11d of the front end member 11b of the left bar-like member 11 of the rear end carriage 4, and the right end is centered. The rear end member 13 c of the right side bar-shaped member 13 of the carriage 3 is supported at a position higher than the upper surface of the bar-shaped member 13 by the upper end of a long vertical support shaft 28 b erected from the center of the lower bearing portion 13 e. The upper link 29 is attached via a spacer on the rear end member 10c of the left bar-shaped member 10 of the central carriage 3 and extends in a cantilever manner to a position above the lower bearing portion 10e of the rear end member 10c. It is pivotally supported by the vertical support shaft 29a on the upper side of the bearing member 10g to be taken out, and the right end portion is mounted on the front end member 14b of the right bar member 14 of the carriage 3 at the rear end via a spacer, and the front end member 14b. Is supported by a vertical support shaft 29b on the upper side of a bearing member 14e extending in a cantilever manner up to a position above the upper bearing portion 14d.

  Therefore, when the central cart 3 and the rear cart 3 are adjacent to each other in the straight direction, the upper and lower links 28 and 29 overlap each other, as shown in FIGS. 5B, 6C, and 6D. Both ends of the lower link 28 enter below the bearing members 10g and 14e that support both ends of the link 29, and both ends of the vertical links 28a and 28b that support both ends of the lower link 28 and the upper link 29 are connected. The vertical support shafts 29a and 29b that support the shaft are positioned concentrically with each other. At this time, the upper bearing portion 14d of the rear end member 14b of the right rod-like member 14 of the rear end cart 4 enters the lower right side of the lower link 28. Therefore, the upper bearing portion 14d and the right end of the lower link 28 Will interfere with the long vertical support shaft 28b. In order to avoid this interference, as shown in FIG. 2B, a cutout groove 14f is formed in the upper bearing portion 14d from the tip of the arc shape to the center, and a long vertical support is provided in the cutout groove 14f. The intermediate portion of the shaft 28b is configured to enter.

  As described above, the length in the traveling direction of the central cart 3 is longer than the length in the traveling direction of the carts 2 and 4 at both front and rear ends, but the load bar configuration attached to each cart 2 to 4 The rod-shaped members 9 to 11 and 12 to 14 are not the length matched to the traveling direction length of each of the trucks 2 to 4 to be attached, but are configured to have the same length. Accordingly, as shown in FIG. 1, the rod-like members 9, 11 and 12, 14 attached to the front and rear carts 2, 4 enter the area of the central cart 3, and accordingly the front cart The inter-connection means 5 and the rear-side bogie connection means 6 are provided at positions that enter inside from the front and rear ends of the central bogie 3.

  Further, as shown in FIGS. 3 and 4, the lower side of the front end members 9 b, 12 b of the left and right rod-like members 9, 12 of the front end cart 2 and the rear of the left and right bar-like members 11, 14 of the rear end cart 4. On the lower side of the end members 11c and 14c, rollers 32a, 32d and 33a, 33d are respectively supported by vertical support shafts 30a, 30d and 31a, 31d concentric with the centers of the arcuate surfaces of the end members. Yes. Further, on the lower side of the end members 10b, 10c at the front and rear ends of the left bar-like member 10 of the central carriage 3, concentric with vertical support shafts 27a, 29a for supporting the left ends of the upper links 27, 29 at their upper positions. The rollers 32b and 32c are pivotally supported by the vertical support shafts 30b and 30c, respectively, and below the end members 13b and 13c at the front and rear ends of the right side bar-shaped member 13 of the central carriage 3 are positioned below these positions. The rollers 33b and 33c are pivotally supported by the vertical support shafts 31b and 31c, respectively, concentrically with the long vertical support shafts 26b and 28b that support the right ends of the side links 26 and 28. As shown in FIGS. 5 and 6, the vertical support shafts 31 b and 31 c that support the rollers 33 b and 33 c are integrated with the long vertical support shafts 26 b and 28 b directly above, thereby reducing the number of parts. I can do it.

  The rollers 32a to 32d and 33a to 33d that are pivotally supported as described above constitute left and right guide roller rows 34 and 35 that are integral with the load bars 7 and 8, and each carriage 2 to 4 is directed straight ahead. In the state adjacent to each other, like the rod-shaped members 9 to 11 and 12 to 14 constituting the load bars 7 and 8, they are arranged on a straight line parallel to the traveling direction of the transport traveling body 1.

  As shown in FIG. 7A, the transport traveling body 1 configured as described above has upper and lower connecting means 5 and 6 between the front and rear carriages 5 and 6 in a state in which each carriage 2 to 4 is in a straight running posture adjacent in a straight running direction. Both links 26, 27 and 28, 29 overlap each other in a direction orthogonal to the traveling direction of the transport traveling body 1, and vertical support shafts 26 a, 27 a at both ends of the upper and lower links 26, 27, 28, 29, 26b, 27b and 28a, 29a, 28b, 29b are located concentrically with each other, so that the carts 2, 3 and 3, 4 adjacent to each other in the front-rear direction do not swing relative to each other in the left-right and left-right directions. Of the guide roller rows 34 and 35 of the row, only the four rollers 32a to 32d or 33a to 33d of the guide roller row on one side are guided by the groove-shaped straight guide rail 36 into which these rollers are fitted. Real and smoothly the conveying traveling body 1 can be straight running.

  Then, as shown in FIG. 7B, when it is desired to turn the transport traveling body 1 horizontally in the counterclockwise direction, the four rollers 32a to 32d of the guide roller row 34 on the left side of the transport traveling body 1 are fitted with these rollers. When it is guided by the groove-shaped counterclockwise arc guide rail 37 to be joined and the transport traveling body 1 is to be turned horizontally in the clockwise direction, the four guide roller rows 35 on the right side of the transport traveling body 1 are arranged. The rollers 33a to 33d may be guided by a groove-shaped clockwise arc-shaped guide rail 38 into which these rollers are fitted. The transport traveling body 1 guided by the counterclockwise circular arc guide rail 37 is located on the left side of the front and rear carriage connecting means 5 and 6 and is vertically concentric with the vertical support shafts 26a and 27a. And 28a, 29a (vertical support shafts 30b, 30c of the intermediate rollers 32b, 32c of the left guide roller row 34) are bent horizontally to the left, and the carriages 2-4 are horizontally fanned in a posture. I will run. At this time, the vertical support shafts 26b, 27b and 28b, 29b, which are positioned concentrically with each other on the right side of the connecting means 5 and 6 between the front and rear carriages, together with the rod-like members 12 to 14 to which they are attached, 2 and 4 are separated from each other in the traveling direction, and the vertical links 26a, 27a and 28a, 29a centered on the vertical support shafts 26a, 27a and 28a, 29a on the left side are located on the left side. It will open in a letter shape.

  As shown in FIG. 7C, when it is desired to turn the transport traveling body 1 horizontally in the clockwise direction, these rollers fit the four rollers 33a to 33d of the guide roller row 35 on the right side of the transport traveling body 1. What is necessary is just to guide by the circular arc guide rail 38 for clockwise rotation which carries out. The transporting traveling body 1 guided by the clockwise and counterclockwise circular arc guide rail 38 is located on the right side of the front and rear carriage connecting means 5 and 6 and is vertically supported on the vertical support shafts 26b, 27b and 28b. 29b (vertical support shafts 31b and 31c of the intermediate rollers 33b and 33c of the right guide roller row 35) are bent horizontally to the right, and each carriage 2 to 4 travels in a horizontally open posture. It will be. At this time, the vertical support shafts 26a, 27a and 28a, 29a, which are positioned concentrically with each other on the left side of the connecting means 5 and 6 between the front and rear carriages, together with the rod-like members 9 to 11 to which they are attached, 2 and 4, the upper and lower links 26, 27 and 28, 29 are V-shaped around the vertical support shafts 26b, 27b and 28b, 29b located concentrically with each other on the right side. Will be opened.

  Specifically, for example, as shown in FIG. 8, on a travel route that continues to the straight path portion 39, the counterclockwise horizontal turn route portion 40, the straight path portion 41, the clockwise horizontal turn route portion 42, and the straight path portion 43. The conveyance traveling body 1 can be caused to travel. In this case, a counterclockwise arcuate guide rail 37 is laid on the counterclockwise horizontal turn path portion 40, and a clockwise arcuate guide rail 38 is laid on the clockwise counterclockwise turn path portion 42. Then, in the straight path part 39 to which the counterclockwise horizontal turn path part 40 is connected, the left straight guide rail 36L connected to the counterclockwise arc guide rail 37 of the counterclockwise horizontal turn path part 40 is provided. Is straight, the straight turn path portion 41 having the counterclockwise horizontal turn path portion 40 and the lower turn horizontal turn path portion 42 is divided into the upper side region and the lower side region, and in the upper side region, A left straight guide rail 36L connected to a left-handed arcuate guide rail 37 laid on the upper left-handed horizontal turn path portion 40 is laid, and a lower-handed right-handed horizontal turn path is placed on the lower side area. A right straight guide rail 36 </ b> R connected to a clockwise arcuate guide rail 38 laid on the portion 42 is laid. In this case, the exit position of the left straight guide rail 36L and the right straight guide rail 36R are not formed between the upper and lower hand regions so that there is no space in which neither of the left and right guide roller rows 34, 35 is guided. The entrance position coincides with the traveling direction, or both straight guide rails 36L and 36R overlap within an appropriate distance with respect to the traveling direction. Of course, the right straight guide rail 36R connected to the right-handed circular arc guide rail 38 laid on the right-handed horizontal turn path portion 42 is provided in the straight-forward path portion 43 below the right-handed horizontal turn path portion 42. Is laid.

  Note that the left straight guide rail 36L and the right straight guide rail 36R connected to the upper and lower sides of the horizontal turn path portions 40 and 42 are for carrying the straight guide rails 36L and 36R. The length is longer than the length of the two front and rear rollers 32a, 32b or 33a, 33b of the carriage 2 at the front end of the traveling body 1, and at least the next stage with the front end carriage 2 being guided completely straightly. It is desirable that the guide rail be handed over.

  On the travel route shown in FIG. 8 configured as described above, in each of the straight path portions 39, 41, and 43, each of the left guide roller row 34 is provided by the left straight guide rail 36L or the right straight guide rail 36R. The rollers 32a to 32d or the rollers 33a to 33d of the right guide roller row 35 are guided, and the traveling body 1 is made to travel straight in a state where the carts 2 to 4 are integrated adjacent to each other in a straight traveling direction. Entering the counterclockwise horizontal turn path section 40 from the path section 39, entering the straight path section 41 from the counterclockwise horizontal turn path section 40, entering the clockwise horizontal turn path section 42 from the straight path section 41, and The advancing traveling from the clockwise horizontal turn path portion 42 to the straight path portion 43 can be smoothly performed without any control. Running the conveying traveling body 1 in well, it is possible to smoothly travel while each carriage 2-4 to open in a fan shape as previously described.

  The travel route shown in FIG. 8 is schematically illustrated, and the actual length of each of the straight path portions 39, 41, 43 is as long as several times to several tens of times the total length of the transport traveling body 1. Thus, when the traveling body 1 for transportation is driven by the friction drive means 22 in each of the straight path portions 39, 41, 43, the left straight guide laid on each of the straight path portions 39, 41, 43. Friction drive means 22 is arranged to drive one load bar 7 or 8 provided with one guide roller row 34 or 35 guided by rail 36L or right straight guide rail 36R. At this time, when each traveling body 1 is made to travel at a constant speed while maintaining an arbitrary interval, it is the same as the entire length of the transportation body 1 (the total length of the load bars 7 and 8), as known in the art. Friction driving means 22 are arranged at shorter intervals. In addition, when there are sections in which the plurality of transporting traveling bodies 1 are back-and-forth driven in a continuous state in the straight path portion, the friction drive means 22 may be provided at the entrance and the exit of the section for back-and-forth driving. It is also known to be good. Further, since the carriage 1 according to the present invention travels in the horizontal turn path portions 40 and 42 with the carriages 2 to 4 opened in a fan shape, as described above, the curvature of the horizontal turn path portions 40 and 42 is increased. As shown in FIG. 8, the friction drive means 22 is disposed at the entrance and exit of the horizontal turn path portions 40, 42, and the horizontal turn path section 40, Before the load bar 7 or 8 of the transport traveling body 1 fed to 42 is detached from the friction drive means 22 at the entrance, it is inherited by the friction drive means 22 at the exit, and the transport travel body 1 by the friction drive means 22 at the exit. Can be advanced completely from the horizontal turn path portions 40 and 42.

  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 Conveyance body for conveyance 2-4 trolleys 5, 6 Connecting means between trolleys 7, 8 Load bar rod-shaped members 9-14 Rod-shaped members 9a-14a Square pipe main bodies 9b, 9c-14b, 14c End members 9d, 11d, 12d , 14d Upper bearing portion 10d, 10e, 13d, 13e Lower bearing portion 10f, 10g, 12e, 14e Bearing member 12f, 14f Notch groove 22 Friction drive means 26, 27 Lower link 26a-31d Vertical support shaft 28, 29 Upper links 32a-32d, 33a-33d Rollers 34, 35 Two guide roller rows on the left and right 36, 36A, 36B Straight guide rails 37, 38 Arc-shaped guide rails 39, 41, 43 Straight path sections 40, 42 Horizontal turns Path part

Claims (5)

  A transport device comprising a transport traveling body composed of a plurality of carriages connected in series in the travel direction and inter-cart connection means, and a guide device for causing the transport travel body to travel along the travel path, the inter-cart connection means Consists of two links whose ends are respectively pivotally supported by vertical support shafts on the left and right ends of the two front and rear carts to be connected, and the two front and rear vehicles connected by the inter-cart connecting means When the carts are adjacent to each other in the straight traveling direction, the two links overlap each other in a direction perpendicular to the straight traveling direction of the cart, and the vertical support shafts at both ends of each link are positioned concentrically. The guide means includes two guide roller rows on the left and right sides, and guide rails that are laid on the travel path side of the transport traveling body and guide at least one of the two guide roller rows on the left and right sides. From The two left and right guide roller rows are concentric with the concentric vertical support shafts at both ends of the two links when the carriages are adjacent to each other in the straight direction. An intermediate roller that is pivotally supported by one of the two front and rear carriages connected by the two links, and both front and rear ends so as to be positioned on a straight line parallel to the carriage straight direction passing through the intermediate rollers. A transport device using a connecting cart, comprising an end roller rotatably supported around a vertical axis at an end of the cart opposite to the side where the intermediate roller is located.   The two links of the inter-cart connecting means are arranged such that, when the front and rear carts connected by the link are adjacent to each other in the straight direction, the lower side of one of the carts adjacent to the front and rear The conveying apparatus using a connecting cart according to claim 1, wherein the conveying apparatus is disposed at a position where it enters.   Bar-shaped members are attached in two rows along the left and right sides of each carriage, and the ends of the two links of the connecting means between the carriages are located above the ends adjacent to the front and rear of the rod-like members. The intermediate rollers of the left and right guide roller rows supported by a shaft are pivotally supported below one of the end portions adjacent to the front and rear of the rod-shaped member, and the end rollers are provided at both front and rear ends. The transport device using a connected cart according to claim 1 or 2, wherein the transport device is supported on the lower side of the free end portion of the bar-shaped member of the cart.   The ends of the rod-like members adjacent to each other in the front-rear direction are formed in a circular arc shape that overlaps vertically and is concentric with the vertical support shaft. The rod-shaped member constitutes two rows of left and right load bars for friction drive that are continuously bent over the entire length of the conveyance traveling body and can be bent horizontally at the position of the vertical support shaft located between the front and rear adjacent carriages, Of the two links, one end of the lower link is directly supported by the vertical support shaft on the upper side of the upper end portion of the rod-shaped member to be supported, and the other end of the link is supported by the shaft. The both ends of the upper link that is supported by the upper end of the long vertical support shaft erected from the lower end of the rod-shaped member of each of the rod-shaped members are respectively attached to positions away from the ends of the rod-shaped members to be supported. The bearing member that extends to the upper side of the lower link is pivoted by the vertical support shaft. A notch groove into which the long vertical support shaft is fitted is formed at an upper end portion of the rod-shaped member that overlaps a lower end portion of the rod-shaped member provided with the long vertical support shaft. The driving means for driving the traveling body for transportation by friction drive wheels disposed on the traveling path side so as to be in pressure contact with the side surface of at least one of the load bars in the two rows is configured. The transportation apparatus using the connecting cart described in 1.   The traveling path of the transport traveling body is composed of a combination of a straight path section, a left-handed horizontal turn path section, and a right-handed horizontal turn path section. An arc-shaped guide rail that guides each roller of the guide roller row located inside the bending direction of the horizontal turn path portion is laid, and the upper side region of the straight path portion has a horizontal turn path on its upper side. A straight guide rail connected to the arc guide rail laid in the section is laid, and in the lower side area of the straight path section, the arc guide laid in the lower horizontal turn path section If a straight guide rail connected to the rail is laid and the straight guide rail in the upper area of the straight path and the straight guide rail in the lower area are on the left and right sides, When the advance guide rails are connected to each other and are continuous and the straight guide rails in both areas are in the left and right reverse positions, the exit position of the upper guide rail and the lower guide rail entrance position The conveying apparatus using a connecting cart according to any one of claims 1 to 4, wherein straight traveling guide rails in both regions are laid so that they are not separated from each other in the traveling direction.

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