JP5338752B2 - Transport vehicle system - Google Patents

Description

  The present invention relates to a transport vehicle system, and more particularly to a transport vehicle system in which a transport vehicle travels along a track.

  2. Description of the Related Art A transport vehicle for transporting a large glass substrate or a cassette in which a plurality of glass substrates are stored is known. The transport vehicle automatically travels in a clean room in the factory and transports articles between processing devices.

  The track on which the transport vehicle travels is, for example, a rail suspended from the ceiling. The space in which the transport vehicle travels is a clean room that is blocked from the outside.

  The track layout on which the transport vehicle travels includes a straight portion, a curved portion, a branch portion, and a merging portion. The conveyance vehicle is provided with a branch guide roller and a drive mechanism. Thus, when the transport vehicle reaches the branching portion, the driving mechanism moves the branching guide roller on the branching side to the guide position, so that the branching operation is executed (see, for example, Patent Document 1).

JP 2002-238102 A

In the transport vehicle system, a system in which the transport vehicle runs on a traveling surface of a track is known. When the transport vehicle travels on the branching portion of the track, for example, the branching-side branch guide roller is disposed at the guide position with respect to the branching guide rail, thereby moving to the branching-side track and continuing traveling.
However, there is a risk that the transport vehicle may derail from the traveling rail at the branching portion or the merging portion. When the transport vehicle is derailed from the traveling rail, the posture of the transport vehicle changes greatly or falls off the traveling rail.

  An object of the present invention is to prevent a transport vehicle from dropping off at a branching portion of a track in a transport vehicle system.

  Hereinafter, a plurality of modes will be described as means for solving the problems. These aspects can be arbitrarily combined as necessary.

A transport vehicle system according to an aspect of the present invention includes a track including a branching portion or a junction, and a transport vehicle that travels along the track. The track is arranged in a pair of traveling rails divided on the inner side of the branching portion or the merging portion, a guide rail extending upward from the outer end of the traveling rail, and a first region disposed in the region through which the transport vehicle passes inside the branching portion . A plate-shaped member and a second plate-shaped member disposed around the first plate-shaped member so as to fill a gap between the pair of traveling rails are provided inside the branch portion .
In this system, the transport vehicle moves from the pair of travel rails to the pair of travel rails through the first plate-shaped member when traveling on the branch portion of the track. In the unlikely event that the conveyance deviates from the first plate-like member while traveling on the branch portion, the conveyance vehicle rides on the second plate-like member. Therefore, the conveyance vehicle is prevented from dropping off from the track at the branch portion or the junction portion.
A pair of running rails are divided at a branching portion or a junction portion of the track, and a first plate-like member is disposed at that portion. Therefore, it is not necessary to prepare a traveling rail that matches the curved shape of the branching part or the joining part. Further, since the first plate member and the second plate member are provided separately, for example, different surface treatments can be applied to the first plate member and the second plate member. That is, unnecessary processing can be eliminated.

The track may include a suspension member, a frame member, a plurality of first support portions, and a plurality of second support portions. The suspension member is suspended from the ceiling. The frame member is supported by the suspension member and supports the pair of traveling rails. The plurality of first support parts are supported by the frame member at the branching part or the joining part and support the first plate-like member. The plurality of second support parts are supported by the frame member at the branching part or the joining part and support the second plate-like member. The second support part is lower in strength than the first support part.
In this system, the first plate member and the second plate member of the track are supported by the first support portion and the second support portion, and the first support portion and the second support portion are suspended from the ceiling. It is supported by the frame member supported by the lowering member.
Since the load of the transport vehicle during normal travel does not act on the second support part, there is no problem even if the strength of the second support part is lower than that of the first support part.

The plurality of second support portions may be arranged away from each other along the frame member.
In this system, since the load of the transport vehicle during normal travel does not act on the plurality of second support parts, there is no problem even if the plurality of second support parts are arranged apart from each other.

  In the transport vehicle system according to the present invention, the pair of traveling rails is divided at the branching or joining portion of the track, and the first plate-like member is disposed at that portion. Therefore, it is not necessary to prepare a traveling rail that matches the curved shape of the branching part or the joining part. Further, since the first plate member and the second plate member are provided separately, for example, different surface treatments can be applied to the first plate member and the second plate member.

The schematic diagram of the conveyance vehicle system by which one Embodiment of this invention was employ | adopted. The schematic plan view of the branch part of a track. The block block diagram which shows the control structure of a conveyance vehicle system. The detailed top view of the branch part of an orbit. FIG. 5 is a cross-sectional view taken along line VV in FIG. 4. FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 4. VII-VII arrow sectional drawing of FIG. VIII-VIII arrow sectional drawing of FIG. IX-IX arrow sectional drawing of FIG.

(1) Transportation vehicle system The conveyance vehicle system 1 by which one Embodiment of this invention was employ | adopted is demonstrated using FIG. FIG. 1 is a schematic diagram of a transport vehicle system in which an embodiment of the present invention is adopted.

  The transport vehicle system 1 includes a track 2 and a transport vehicle 3 that travels on the track 2. In this embodiment, the track 2 is suspended from the ceiling, and the periphery of the track 2 is a clean room.

(2) Track The track 2 has a traveling rail 4 and a guide rail 6. The traveling rail 4 is composed of left and right first traveling rails 4a and second traveling rails 4b. The first traveling rail 4a and the second traveling rail 4b have flat traveling surfaces. The first traveling rail 4a and the second traveling rail 4b are made of aluminum, and the traveling surfaces thereof are subjected to hard anodizing treatment.

  The guide rail 6 has a first guide rail 6a and a second guide rail 6b. The first guide rail 6a and the second guide rail 6b are provided at the outer ends of the first travel rail 4a and the second travel rail 4b, respectively. The first guide rail 6a and the second guide rail 6b extend upward.

  A power supply line (not shown) is provided along the first traveling rail 4a and the second traveling rail 4b.

  FIG. 2 is a schematic plan view of a branch portion of the track. As shown in FIG. 2, the track 2 includes a first straight part 201, a branch part 206 at the tip of the first straight part 201, a curved part 203 that turns to the left from the branch part 206, and a straight line from the branch part 206. And a second linear portion 202 extending in a shape.

  Between the first traveling rail 4a of the first straight portion 201 and the first traveling rail 4a of the second straight portion 202, the first traveling rail 4a of the branching portion 206 is disposed. Between the second traveling rail 4b of the first straight portion 201 and the second traveling rail 4b of the curved portion 203, the second traveling rail 4b of the branching portion 206 is disposed.

  The second traveling rail 4b of the first straight portion 201 and the second traveling rail 4b of the curved portion 203 are interrupted at the branching portion 206. The branching portion 206 is interrupted between the second traveling rail 4b of the first straight portion 201 and the second traveling rail 4b of the second straight portion 202. That is, no traveling rail is arranged at the branching portion 206.

(3) Traveling plate member and drop-off prevention plate member The travel plate member 301 that forms the travel surface of the transport vehicle 3 is disposed at the branching portion 206. The traveling plate member 301 is disposed as a first plate member in an area where the wheels of the transport vehicle 3 pass inside the branching portion 206. The travel surface of the travel plate member 301 is the same height as the travel surface of the travel rail 4. Therefore, the transport vehicle 3 can smoothly transition between the traveling rail and the traveling plate member 301. The travel plate member 301 is made of aluminum, and a hard anodized treatment is applied to the travel surface.

  The travel plate member 301 includes a first travel surface 301a and a second travel surface 301b. The first traveling surface 301 a extends between the second traveling rail 4 b of the first straight part 201 and the second traveling rail 4 b of the curved part 203. More specifically, in the first traveling surface 301a, the end surfaces of the second traveling rail 4b of the second straight portion 202 and the first traveling rail 4a of the curved portion 203 are close to each other at the branching portion 206 from the first traveling rail 4a. It extends to the part. The first traveling surface 301 a has a width wider than the width of the traveling rail 4. As a result, a first virtual travel surface 307 through which wheels pass is formed in the first travel surface 301a. The second travel surface 301 b extends between the second travel rail 4 b of the first straight part 201 and the second travel rail 4 b of the second straight part 202. More specifically, in the second traveling surface 301b, at the branching portion 206, the end surfaces of the second traveling rail 4b of the second straight portion 202 and the first traveling rail 4a of the curved portion 203 are close to each other from the second traveling rail 4b. It extends to the part. The second traveling surface 301 b has a width wider than the width of the traveling rail 4. As a result, a second virtual traveling surface 308 through which wheels pass is formed in the second traveling surface 301b.

  A drop prevention plate member 302 is disposed around the travel plate member 301. The drop prevention plate member 302 is disposed around the travel plate member 301 inside the branching portion 206 as a second plate member. The drop prevention plate member 302 is disposed between the first travel rail 4 a and the second travel rail 4 b in a state of being in close contact with the travel plate member 301. That is, in the branching portion 206, the travel plate member 301 and the drop prevention plate member 302 are disposed so as to fill the gap between the first travel rail 4a and the second travel rail 4b.

  The travel surface of the drop prevention plate member 302 is slightly lower (for example, 1 to 2 mm) than the travel surface of the travel rail 4 and the travel plate member 301. The drop-off prevention plate member 302 is made of aluminum, and a decorative alumite treatment is applied to its running surface.

  The drop prevention plate member 302 includes a first plate member 303, a second plate member 304, and a third plate member 305. The first plate member 303 is disposed on the second linear portion 202 side with respect to the traveling plate member 301. The second plate member 304 is disposed on the curved portion 203 side with respect to the traveling plate member 301. The third plate member 305 is disposed on the first linear portion 201 side with respect to the travel plate member 301.

(4) Transport Vehicle The transport vehicle 3 includes a transport vehicle main body 15, a drive travel unit 18, and a driven travel unit 19. Since the structure of the transport vehicle body 15 is the same as the conventional one, the description thereof is omitted. The drive travel unit 18 and the driven travel unit 19 are bogies that are rotatably attached to the transport vehicle body 15.

  The drive travel unit 18 will be described with reference to FIG. The drive travel unit 18 mainly includes a main body frame 20, a first drive wheel unit 21, a second drive wheel unit 22, a fixed guide roller mechanism (31, 32), and a branch guide roller mechanism (33, 34, 35).

  The first drive wheel unit 21 is attached to the right end portion of the main body frame 20 and has a first traveling wheel 25, a first motor 26, and a first encoder 27. The first traveling wheel 25 is placed on the traveling surface of the first traveling rail 4a. The first motor 26 is connected to the first traveling wheel 25. The first encoder 27 measures the rotation of the first motor 26 and transmits a pulse signal. Thereby, the rotation speed and the number of rotations of the first motor 26 can be obtained.

  The second drive wheel unit 22 is attached to the left end portion of the main body frame 20, and includes a second traveling wheel 28, a second motor 29, and a second encoder 30. The second traveling wheel 28 is placed on the traveling surface of the second traveling rail 4b. The second motor 29 is connected to the second traveling wheel 28. The second encoder 30 measures the rotation of the second motor 29 and transmits a pulse signal. Thereby, the rotation speed and the number of rotations of the second motor 29 can be obtained.

  The fixed guide roller mechanism (31, 32) has a pair of first fixed guide rollers 31 and a pair of second fixed guide rollers 32. The pair of first fixed guide rollers 31 are disposed at the right end portion of the main body frame 20 so as to be separated from each other in the traveling direction. More specifically, the first fixed guide roller 31 is disposed away from both the front and rear sides of the first traveling wheel 25 in the traveling direction, and is always in contact with or close to the inner side of the first guide rail 6a. The pair of second fixed guide rollers 32 are disposed at the left end portion of the main body frame 20 so as to be separated from each other in the traveling direction. More specifically, the second fixed guide roller 32 is disposed away from both the front and rear sides of the second traveling wheel 28 in the traveling direction, and is always in contact with or close to the inner side of the second guide rail 6b.

  The branch guide roller mechanism (33, 34, 35) is a mechanism for performing a branch operation in the branch portion 206, and includes a pair of first branch guide rollers 33, a second branch guide roller 34, and a first branch guide roller. And a drive unit 35 (FIG. 3).

  The first branch guide roller 33 is disposed corresponding to the first fixed guide roller 31. The second branch guide roller 34 is disposed corresponding to the second fixed guide roller 32. The first branch guide roller driving unit 35 (FIG. 3) is a mechanism for changing the positions of the first branch guide roller 33 and the second branch guide roller 34.

  With the above structure, the first branch guide roller 33 and the second branch guide roller 34 are in contact with or close to the outside of the first guide rail 6a by the first branch guide roller driving unit 35 (FIG. 3), It moves between a non-guide position away from the first guide rail 6a.

The driven traveling unit 19 mainly includes a main body frame 23, a first driven wheel 36, a second driven wheel 37, a second fixed guide roller mechanism (40, 41), and a second branch guide roller mechanism (42, 43, 44).
The first driven wheel 36 is placed on the first traveling rail 4 a of the traveling rail 4. The second driven wheel 37 is placed on the second traveling rail 4 b of the traveling rail 4.

  The second fixed guide roller mechanism (40, 41) has a pair of third fixed guide rollers 40 and a pair of fourth fixed guide rollers 41. The third fixed guide roller 40 is disposed at the right end of the main body frame 23 so as to be separated in the traveling direction. More specifically, the third fixed guide roller 40 is disposed away from both the front and rear sides in the traveling direction of the first driven wheel 36, and is always in contact with or close to the inner side of the first guide rail 6a. The fourth fixed guide roller 41 is arranged at the left end of the main body frame 23 so as to be separated in the traveling direction. More specifically, the fourth fixed guide roller 41 is disposed away from both the front and rear sides of the second driven wheel 37 in the traveling direction, and is always in contact with or close to the inner side of the second guide rail 6b.

  The second branch guide roller mechanism (42, 43, 44) is a mechanism for performing a branch operation in the branch portion 206, and includes a pair of third branch guide rollers 42, a fourth branch guide roller 43, and a second branch. And a guide roller driving unit 44 (FIG. 3).

  The first branch guide roller 33 is disposed corresponding to the first fixed guide roller 31. The second branch guide roller 34 is disposed corresponding to the second fixed guide roller 32. The second branch guide roller drive unit 44 (FIG. 3) is a mechanism for changing the positions of the first branch guide roller 33 and the second branch guide roller 34.

  With the above structure, the second branch guide roller driving unit 44 (FIG. 3) causes the third branch guide roller 42 and the fourth branch guide roller 43 to abut or approach the outside of the first guide rail 6a; It moves between a non-guide position away from the first guide rail 6a.

(5) Detected part and sensor A plurality of types of detected parts provided along the traveling rail 4 will be described with reference to FIG. The detected part includes a reflective tape 11, a barcode 13, and a magnetic mark 14. In FIG. 2, the reflective tape 11, the barcode 13, and the magnetic mark 14 are illustrated inside the traveling rail 4, but are actually provided on the traveling rail 4.
The reflective tape 11 is a member for detecting the position of the transport vehicle 3 in the curved portion 203 and is disposed in the curved portion 203.
The bar code 13 functions as an origin mark and a plurality of reference marks of the traveling rail 4.
The magnetic mark 14 is a member that indicates the stop position of the transport vehicle 3. The magnetic mark 14 is made of a magnetic material such as steel or a non-magnetic material such as copper or aluminum. In this embodiment, the magnetic mark 14 is disposed on the first straight portion 201, and the middle of the magnetic mark 14 is the stop position.

  As shown in FIG. 3, the driving traveling unit 18 and the driven traveling unit 19 are further provided with a photoelectric sensor 47, a linear scale 49, and a barcode reader 50. The photoelectric sensor 47 is for detecting the reflective tape 11. Note that the photoelectric sensor 47 in the figure is a sensor for detecting a traveling position on a curved portion that is bent to the left, and a sensor (not shown) for the curved portion that is bent to the right is provided separately. The linear scale 49 is for detecting the magnetic mark 14. The linear scale 49 obtains the absolute position of the transport vehicle 3 with respect to the magnetic mark 14, in other words, the position based on the magnetic mark 14. The barcode reader 50 is for detecting the barcode 13.

(6) Control Configuration The control configuration of the transport vehicle system 1 will be described with reference to FIG. FIG. 3 is a block diagram showing a control configuration of the transport vehicle system.

  The transport vehicle system 1 includes a transport vehicle controller 52. The transport vehicle controller 52 is a controller for managing the traveling of the plurality of transport vehicles 3. The transport vehicle controller 52 and the transport vehicle 3 can communicate with each other. The transport vehicle controller 52 includes a controller main body 54 and a memory 55. The controller main body 54 is a computer that includes a CPU, a RAM, a ROM, and the like and executes a program. A route map is stored in the memory 55.

  The route map is a map that describes the arrangement of the travel route, the position of the origin, the reference position based on the origin, and the coordinates of the transfer position. The coordinates are obtained by converting the travel distance from the origin into the number of output pulses of the encoder of the transport vehicle.

  The transport vehicle 3 has a travel control unit 59. The travel control unit 59 can transmit a drive signal to the first motor 26 and the second motor 29 based on a command from the transport vehicle controller 52. The travel control unit 59 is further connected to the branch control unit 60. The branch control unit 60 can transmit a drive signal to the first branch guide roller driving unit 35 and the second branch guide roller driving unit 44 (FIG. 3) based on a command from the transport vehicle controller 52.

(7) Structure of the track at the branch portion The support structure 310 that supports the track 2 will be described with reference to FIGS. FIG. 4 is a detailed plan view of a branch portion of the track.

The support structure 310 has a framework structure including a plurality of first frame members 311 extending in the vertical direction of FIG. 4 and a plurality of second frame members 312 extending in the horizontal direction. The first frame member 311 is also disposed directly below the first traveling rail 4a and the second traveling rail 4b of the first straight portion 201 and the second straight portion 202 (see FIGS. 7 and 9). The first frame member 311 and the second frame member 312 are joined to each other.
As shown in FIGS. 4 and 5, the support structure 310 further includes a plurality of suspension members 221. The suspension member 221 extends from the ceiling and is fixed to the first frame member 311 and the second frame member 312. Thereby, the support structure 310 is suspended from the ceiling.
The support structure 310 further includes a plurality of first support portions (for example, a third support member 321 and a fifth support member 325) and a plurality of second support portions (for example, a first support member 313, a second support member 315). ). The first support portion is supported by the frame member at the branching portion 206 and supports the traveling plate member 301. The second support portion is supported by the frame member at the branch portion 206 and supports the drop-off prevention member 302.

  5 is a cross-sectional view taken along line VV in FIG. FIG. 5 mainly shows a structure for supporting the third plate member 305. In FIG. 5, the first frame member 311 extends in the left-right direction on the paper surface, and the second frame member 312 extends in the direction orthogonal to the paper surface. A plurality of first support members 313 are arranged on the upper surface of the second frame member 312. The 1st support member 313 is supporting the 3rd board member 305 from the downward direction as a 2nd support part. A plurality of third frame members 314 extend between the plurality of first frame members 311. The third frame member 314 is a member having an H-shaped cross section disposed on the first frame member 311. A plurality of second support members 315 are arranged above the third frame member 314. The second support member 315 supports the third plate member 305 from below as a second support portion.

  6 is a cross-sectional view taken along the line VI-VI in FIG. FIG. 6 mainly shows a structure for supporting the first traveling surface 301 a of the traveling plate member 301 and the first plate member 303. In FIG. 6, the 1st frame member 311 is extended in the paper surface left-right direction. A plurality of third frame members 314 extend between the two first frame members 311. The third frame member 314 is a member having an H-shaped cross section disposed on the first frame member 311. A plurality of second support members 315 are arranged above the third frame member 314. The second support member 315 supports the first plate member 303 from below as a second support portion. FIG. 6 further shows a third support member 321. The third support member 321 is disposed on the fourth frame member 324, and serves as the first support portion in the portion corresponding to the second virtual travel surface 308 of the travel plate member 301 in plan view. Is supported from below. The fourth frame member 324 extends between the plurality of first frame members 311. Further, the third support member 321 is located immediately above the first frame member 311.

  FIG. 6 also shows the fifth support member 325. The fifth support member 325 is disposed on the upper surface of the fourth frame member 324 that connects the first frame members 311 to each other. The fifth support member 325 supports the travel plate member 301 from below as a first support portion at a portion where the first virtual travel surface 307 and the second virtual travel surface 308 of the travel plate member 301 intersect in plan view. doing. The fifth support member 325 is disposed directly above the first frame member 311 in plan view.

  7 is a cross-sectional view taken along arrow VII-VII in FIG. FIG. 7 mainly discloses a structure for supporting the travel plate member 301 and the third plate member 305 between the first travel rail 4a and the second travel rail 4b. In FIG. 7, a fourth frame member 324 is disposed on the upper surface of the second frame member 312, and an eighth support member 330 and a sixth support member 326 are disposed on the upper surface of the fourth frame member 324. . The eighth support member 330 supports the travel plate member 301 from below as a first support portion. The eighth support member 330 supports the travel plate member 301 from below at a portion where the first virtual travel surface 307 of the travel plate member 301 intersects the first travel rail 4a in plan view. The eighth support member 330 is located immediately above the second frame member 312. The sixth support member 326 supports the third plate member 305 from below as a second support portion.

  8 is a cross-sectional view taken along arrow VIII-VIII in FIG. FIG. 8 mainly discloses a structure for supporting the travel plate member 301 and the second plate member 304 between the first travel rail 4 a and the second travel rail 4 b of the curved portion 203. A plurality of first connecting members 327 are provided between the two first frame members 311. Further, a plurality of second connection members 328 are provided between the two first connection members 327. Seventh support members 329 are provided on the upper surfaces of the first connecting member 327 and the second connecting member 328, respectively. The seventh support member 329 supports the second plate member 304 from below as a second support portion. Furthermore, a ninth support member 331 is provided on the upper surface of the first connecting member 327. The ninth support member 331 supports the travel plate member 301 from below as a first support portion.

  9 is a cross-sectional view taken along arrow IX-IX in FIG. In FIG. 9, the second frame member 312 extends in the left-right direction on the paper surface. FIG. 9 mainly discloses a structure for supporting the traveling rail 4 between the first traveling rail 4a and the second traveling rail 4b of the second linear portion 202. In FIG. 9, a fourth frame member 324 is disposed on the upper surface of the second frame member 312, and a pair of tenth support members 335 are disposed on the upper surface of the fourth frame member 324. The pair of tenth support members 335 support the first traveling rail 4a and the second traveling rail 4b from below.

  Usually, the transport vehicle 3 does not travel on the drop prevention plate member 302, that is, a large load does not act on the drop prevention plate member 302. In other words, the drop prevention plate member 302 only needs to receive the load when the transport vehicle 3 is detached from the travel plate member 301. Therefore, members that support the first plate member 303, the second plate member 304, and the third plate member 305 of the drop prevention plate member 302 (that is, the first support member 313 and the second support member 315 as the second support portion). The sixth support member 326 and the seventh support member 329 are members that support the travel plate member 301 (that is, the third support member 321, the fifth support member 325, and the eighth support member 330 as the first support portion). , An inexpensive member having a lower strength than the ninth support member 331) can be used. Further, it is not necessary to apply the hard alumite treatment to the drop prevention plate member 302, and as a result, the decorative alumite treatment is applied. In this way, by dividing the plate member at the branching portion 206 into the travel plate member 301 and the drop-off prevention plate member 302, it is possible to achieve an appropriate specification according to the requirements required for both.

(8) Features

The above embodiment can be expressed as follows.
The transport vehicle system 1 includes a track 2 including a branching portion 206, and a transport vehicle 3 that travels along the track 2. The track 2 includes a pair of traveling rails 4a and 4b divided inside the branching portion 206, a traveling plate member 301 disposed in a region through which the conveyance vehicle 3 passes inside the branching portion 206, and a traveling plate member. And a drop-preventing plate member 302 disposed around the periphery of 301.
In this system, the transport vehicle 3 moves from the pair of travel rails 4 a and 4 b to the pair of travel rails 4 a and 4 b through the travel plate member 301 when traveling on the branching portion 206 of the track 2. If the transport vehicle 3 is detached from the travel plate member 301 while traveling on the branching portion 206, the transport vehicle 3 rides on the drop prevention plate member 302. Therefore, the conveyance vehicle 3 is prevented from falling off the track 2 at the branching portion 206.
A pair of traveling rails 4a and 4b is divided at the branching portion 206 of the track 2, and a traveling plate member 301 is disposed at that portion. Therefore, it is not necessary to prepare a traveling rail that matches the curved shape of the branching portion 206. Further, since the plate-like member at the branching portion 206 is divided into the travel plate member 301 and the drop-off prevention plate member 302, for example, different surface treatments are applied to the travel plate member 301 and the drop-off prevention plate member 302. Can be applied. That is, unnecessary processing can be eliminated.

The track 2 includes a suspension member 221, first and second frame members 311 and 312, a plurality of first support portions (for example, a third support member 321 and a fifth support member 325), and a plurality of second supports. Part (for example, the 1st support member 313, the 2nd support member 315). The suspension member 221 is suspended from the ceiling. The first and second frame members 311 and 312 are supported by the suspension member 221 and support the pair of travel rails 4a and 4b. The plurality of first support portions are supported by the first and second frame members 311 and 312 at the branch portion 206 and support the travel plate member 301. The plurality of second support portions are fixed to the first and second frame members 311 and 312 at the branch portion 206 and support the drop-off preventing plate member 302. The second support part is lower in strength than the first support part.
In this system, the travel plate member 301 and the drop prevention plate member 302 of the track 2 are supported by a first support portion and a second support portion, and the first support portion and the second support portion are suspended from the ceiling. The first and second frame members 311 and 312 supported by the suspended member 221 are supported.
Since the load of the transport vehicle 3 during normal traveling does not act on the second support portion, there is no problem even if the strength of the second support portion is lower than that of the first support portion.

The plurality of second support portions (for example, the first support member 313, the second support member 315, and the seventh support member 329) are disposed away from each other along the first frame member 311 and the second frame member 312. .
In this system, since the load of the transport vehicle 3 during normal travel does not act on the second support portion, there is no problem even if a plurality of second support portions are arranged apart from each other.

(9) Other Embodiments Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the invention. In particular, a plurality of embodiments and modifications described in this specification can be arbitrarily combined as necessary.

In the above embodiment, the track is suspended from the ceiling, but the present invention is not limited thereto. In the track arranged on the ground, a plurality of types of plate-like members may be arranged at the branch portion.
In the said embodiment, the board member for driving | running | working was one member, However, This invention is not limited to it. The traveling plate member may be a plurality of members.
In the said embodiment, although the board member for driving | running | working and the board member for drop-off prevention have a specific number and shape, this invention is not limited to it. The number and shape of both members can be appropriately combined.
In the said embodiment, although the board member for driving | running | working and the member for drop-off prevention were provided in the branch part, this invention is not limited to it. The travel plate member and the drop-off prevention plate member may be provided at the junction.

  The present invention can be applied to a transport vehicle system in which a transport vehicle travels along a track.

DESCRIPTION OF SYMBOLS 1 Transport vehicle system 2 Track 3 Transport vehicle 4 Travel rail 4a 1st travel rail 4b 2nd travel rail 6 Guide rail 6a 1st guide rail 6b 2nd guide rail 11 Reflective tape 13 Bar code 14 Magnetic mark 15 Transport vehicle main body 18 Drive Traveling part 19 Driven traveling part 20 Main body frame 21 First driving wheel unit 22 Second driving wheel unit 23 Main body frame 25 First traveling wheel 26 First motor 27 First encoder 28 Second traveling wheel 29 Second motor 30 Second encoder 31 1st fixed guide roller 32 2nd fixed guide roller 33 1st branch guide roller 34 2nd branch guide roller 35 1st branch guide roller drive part 36 1st driven wheel 37 2nd driven wheel 40 3rd fixed guide roller 41 1st 4 fixed guide roller 42 3rd branch guide roller 43 4th branch guide roller 44 Second branch guide roller drive unit 47 Photoelectric sensor 49 Linear scale 50 Bar code reader 52 Car carrier controller 54 Controller main body 55 Memory 59 Travel control unit 60 Branch control unit 201 First linear unit 202 Second linear unit 203 Curved unit 206 Branch unit 221 Hanging member 301 Traveling plate member (first plate-like member)
301a 1st running surface 301b 2nd running surface 302 Drop-off prevention plate member (second plate-like member)
303 first plate member 304 second plate member 305 third plate member 307 first virtual running surface 308 second virtual running surface 310 support structure 311 first frame member 312 second frame member 313 first support member (second support portion) )
314 Third frame member 315 Second support member (second support part)
321 Third support member (first support part)
324 Fourth frame member 325 Fifth support member (first support part)
326 Sixth support member 327 First connection member 328 Second connection member 329 Seventh support member (second support portion)
330 eighth support member 331 ninth support member 335 tenth support member 336 eleventh support member

Claims (1)

A track including a bifurcation or a junction, and
A transport vehicle that travels along the track,
The trajectory is
A pair of traveling rails divided inside the branching part or the junction part;
A guide rail extending upward from an outer end of the traveling rail;
A first plate-like member disposed in an area through which the wheel of the transport vehicle passes inside the branch portion;
A second plate-like member disposed around the first plate-like member so as to fill a gap between the pair of travel rails inside the branch portion ;
A suspension member suspended from the ceiling;
A frame member fixed to the suspension member and supporting the pair of travel rails;
A plurality of first support parts supported by the frame member and supporting the first plate-like member at the branching part or the joining part;
A plurality of second support portions supported by the frame member and supporting the second plate-like member at the branching portion or the merging portion ;
Have
The second support part is lower in strength than the first support part, and the plurality of second support parts are arranged away from each other along the frame member .

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