JP2007050793A - Track for carriage cart - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a track for carriage carts allowing a worker to easily view the direction to operate a branching device provided in the carriage cart, when the carriage cart is manually traveled due to trouble or the like, in a carriage cart system enabling the traveling of the carriage cart with traveling wheels. <P>SOLUTION: In this track 12 of the carriage cart 13, guide grooves 144 and 145 formed along the traveling direction of the carriage cart 13 are provided at a position corresponding to an advanceable/retreatable branching roller 26 provided in the carriage cart 13, and at least a part of the traveling direction of the carriage cart 13 in each of the guide grooves 144 and 145 is intermittent. By giving a marking 100 for showing an end part of each of the intermittent grooves 144 and 145 to a position where the worker of the carriage cart 13 can view, malfunction is prevented. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is provided with a groove formed along the traveling direction of the transport vehicle at a position corresponding to a projecting portion which is provided in the transport vehicle so as to be movable forward and backward, and the groove has at least a part of the traveling direction of the transport vehicle. It relates to the trajectory of an intermittent transport vehicle.

2. Description of the Related Art Conventionally, there is a transportation vehicle system that travels a transportation vehicle provided with traveling wheels on a traveling rail having a branch portion. As an example of such a transport vehicle system, the following is known as an overhead transport vehicle.
The track on which the transport vehicle travels has a C-shaped cross section so that a space for storing the travel portion of the transport vehicle is formed, and an opening (slit) of the track that is C-shaped. It is laid on the ceiling so as to be positioned below. And at the lower end of the track, traveling rails are formed on the left and right sides of the slit, respectively, and traveling wheels of the transport vehicle (support wheels of the transport vehicle on the track) travel on the traveling rail.

On the other hand, a conveyance vehicle is comprised from the upper traveling vehicle body and the lower article support part, a traveling vehicle body is located in a track | truck, and an article support part is located below a track | orbit.
The traveling vehicle body is provided with traveling wheels, and the article support portion is configured to hold the article. The slit has a width that allows the slit to pass through a connecting portion between the traveling vehicle body and the article support portion.

2. Description of the Related Art Conventionally, as a technique that enables a transport vehicle to travel on a branched track while eliminating the need for a direction steering function, a branching device that forms a groove on the track and drives a branching roller that engages with the groove so as to freely advance and retract. The structure which mounts this in a conveyance vehicle is known. An example of such a trajectory is disclosed in Patent Document 1.
The track has a main track and a branch track branched from the main track. A main track groove is formed on the main track, and a branch track groove is also formed on the branch track branched from the main track. When the transport vehicle is driven with the branch roller engaged with the main track groove, the transport vehicle runs along the main track, and the transport vehicle is driven with the branch roller engaged with the branch track groove. Then, the transport vehicle travels along the branch track.

A main track groove and a branch track groove are formed on the track in the vicinity of the branch portion between the main track and the branch track. It can be selectively driven on the main track or the branch track. More specifically, a main track groove is formed on one of the left and right sides of the track, and a branch track groove is formed on the other of the left and right sides. An advancing and retracting branching roller and a branching roller that can advance and retract with respect to the left groove are provided.
JP 2002-321615 A

However, since the groove for the branch track is formed so as to be guided from the branch portion of the main track to the branch track, at the branch portion of the main track, immediately after the branch, only the groove on the main track side branches. There are no tracks on the track side. Moreover, the location which does not branch may be provided only in one side. That is, the groove formed in the track is not always formed continuously along the track. For this reason, when the aforementioned track is automatically driven, the control unit of the conveyance vehicle system stores the groove formation position on the track in advance so that the control unit always protrudes the branch roller on the side having the groove. It is controlled to let you.
Here, when driving manually due to troubles, that is, when an operator operates the transport vehicle with a remote controller or the like, even if the operator looks at the track, whether the groove is formed on the right side or the left side from the gap of the slit. May not be easily identified, and it may not be immediately obvious whether the branch roller should be switched to the right or left. If the operator appropriately operates the branch device in a place where only one of the left and right grooves is provided, the branch device may be operated on the side where the groove is not provided, and the branch device may be broken.

Further, such a problem is not limited to the problem between the track guide groove on the track and the track switching branch device on the transport vehicle side, and the groove is intermittently interrupted at least partially along the track. This is a problem that generally occurs if the configuration is such that the protruding portion that engages with or protrudes into the groove is provided in the carriage so as to be able to advance and retract. For example, the same problem occurs in the case of a configuration in which a signal line laid along a track is arranged in a groove of the track and an antenna for communicating with the signal line protrudes from the carrier vehicle.
Therefore, the problem to be solved is to provide a trajectory of the transport vehicle that allows the operator to easily see which protrusion the retractable protrusion provided on the transport vehicle should operate. It is.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

  That is, in claim 1, a space is formed in which the traveling portion of the transport vehicle is accommodated, and the transport vehicle is moved in the traveling direction at a position corresponding to the projecting portion provided in the traveling portion in the space. In addition, the track of the transport vehicle is provided with a groove formed at least partially intermittently, and display means for displaying the presence or absence of the groove is provided outside the space.

  According to a second aspect of the present invention, in the track of the transport vehicle according to the first aspect, the display means is a marking formed continuously according to the intermittent state of the groove.

  According to a third aspect of the present invention, in the track of the transport vehicle according to the first or second aspect, the track has a branching portion that branches into left and right tracks, and the groove is a protruding portion provided in the traveling portion. These are guide grooves formed in the left and right tracks so that the branching rollers of the branching device are engaged.

  In a fourth aspect of the present invention, in the track of the transport vehicle according to any one of the first to third aspects, the space includes a pair of side walls, a base that connects the upper ends of the side walls and that is formed with the grooves, and a predetermined space. It is formed by a pair of traveling rails formed at the lower end of the side wall with an interval, and the display means is provided on the lower surface of the traveling rail.

  As effects of the present invention, the following effects can be obtained.

  According to the first aspect of the present invention, by providing the display means outside the space in which the traveling portion of the transport vehicle is accommodated, it is possible to easily determine where the operator operating the transport vehicle can insert the protruding portion into the groove.

  According to the second aspect of the present invention, it is easy for the operator to visually grasp the groove forming region, and it is possible to more easily determine where the operator operating the transport vehicle can insert the protruding portion into the groove.

According to a third aspect of the present invention, in the configuration in which the branching roller is used for the branching device, the operator can prevent the branching device that drives the branching roller from malfunctioning by preventing the operator from erroneously operating the branching roller.
According to the fourth aspect of the present invention, by providing the display means on the lower surface of the traveling rail that is most easily viewed by the operator below, the position where the protruding portion can be inserted into the groove can be easily determined.

Next, embodiments of the invention will be described.
1 is a schematic diagram of an automated guided vehicle system according to an embodiment of the present invention, FIG. 2 is a front sectional view of a guided vehicle according to an embodiment of the present invention, and FIG. 3 illustrates a branching portion of a track according to the embodiment of the present invention. FIG. 4 is a schematic plan view of a track according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view of a guide groove according to an embodiment of the present invention.
In FIG. 1, a simplified track 12 is shown for the schematic explanation of the automatic guided vehicle track system 1, but in FIG. 4, a complicated route laid in actual operation is shown. A trajectory 12 of the configuration is shown.

<Automated guided vehicle system>
First, the automatic guided vehicle system 1 which is embodiment of this invention is demonstrated using FIG. In FIG. 1, the track 12 is laid on the moving path of the transport vehicle 13, and along the track 12, power supply lines 5 and 5 in which conductive wires such as copper wires are covered with an insulating material are arranged. A plurality of stations 10, 10 are arranged on the side of the track 12, so that the transport vehicle 13 can move between the stations 10, 10 to transport articles from one station 10 to the other station 10.
A power supply device 11 is provided at one end of each of the power supply lines 5 and 5 so that power is supplied to the power supply lines 5 and 5 at a predetermined frequency (high frequency). The transport vehicle 13 receives power using electromagnetic induction by the high-frequency current supplied from the power supply device 11 and obtains power.

The transport vehicle 13 includes a pickup unit 9 for obtaining electric power from the power supply lines 5 and 5, and at least a pair of the left and right pickup units 9 and 9 are disposed on the transport vehicle 13. And the conveyance vehicle 13 moves on the track | orbit 12 using the electric power which the pick-up unit 9 * 9 takes out.
The track 12 includes a main path 12a that is an annular path and a branch path 12b formed in the main path 12a. Here, a portion where the branch path 12b branches from the main path 12a corresponding to the trunk is defined as a branch portion.
Feed lines 5 and 5 are installed on the main path 12a and the branch path 12b, and the pair of feed lines 5 and 5 form a forward path and a return path, and a feed path 50 is formed as a whole. A pair of power supply lines 5 and 5 are provided on at least one of the left and right sides of the track 12 in order to enable the power supply to the transport vehicle 13 anywhere on the track 12.

<Orbit>
Next, the track 12 on which the transport vehicle 13 travels will be described with reference to FIGS.
The track 12 is fixed to the ceiling. The track 12 is formed by connecting a plurality of track units, and as shown in FIG. 3, the track 12 includes a track unit 120 at a branch portion and a track unit 20 at a non-branch portion.
Further, as shown in FIG. 2, the track unit 120 includes left and right side walls 41 and a base 142 that bridges between the upper ends of the side walls 41 and 41, and a space in which the traveling unit 21 of the transport vehicle 13 is accommodated. Is formed in a C-shaped cross-sectional view. The side walls 41 and 41 are provided on both the left and right sides of the track 12 as shown in FIG.

As shown in FIGS. 2 and 3, the track unit 20 is provided with a portion that protrudes inward in the left-right direction from the lower ends of the side walls 41, 41 to form a pair of running rails 40, 40. The upper surface of the traveling rail 40 is formed to be a horizontal plane, and the traveling wheels 23, 23... Abut on the traveling rail 40 so that the transport vehicle 13 travels on the traveling rails 40. ing.
Since the track unit 120 has a bifurcated structure in this embodiment, as shown in FIG. 3, three travel rails corresponding to the travel rails 40 and 40 of the track unit 20 are formed. Traveling rails 140a, 140b, 140c.

  Further, as shown in FIG. 2, the track unit 20 is provided with a gap between the traveling rails 40, 40 so that it can pass through a connecting body 36 that connects the traveling unit 21 and the article support unit 22. Yes. Similarly, the track unit 120 is also provided with a gap between the traveling rails 120 and 120 so that it can pass through the coupling body 36.

<Carrier>
Here, the carrier 13 will be described with reference to FIGS. As shown in FIG. 2, the transport vehicle 13 is provided with a traveling unit 21 in the upper part and an article support part 22 in the lower part. The traveling unit 21 includes a central main frame 31 and wheel support portions 32 and 32 positioned before and after the main frame 31. As shown in FIG. 3, the wheel support portions 32 and 32 and the main frame 31 are connected via a rotation fulcrum shaft (not shown), and the wheel support portions 32 and 32 rotate with respect to the main frame 31. It is free.
As shown in FIG. 2, the traveling unit 21 is provided with a motor 16 as a driving unit of the transport vehicle 13, and the motor 16 is attached to the main frame 31.
A drive wheel 25 is provided coaxially with the motor shaft of the motor 16 so that the drive wheel 25 is rotated by driving the motor 16.

In FIG. 3, the branch device 2 is an apparatus that alternatively moves the support bodies 49 provided on the left and right sides of the wheel support portion 32 up and down. Each support base 49 is provided with a branch roller 26 that engages with guide grooves 144 and 145 (described later). Here, when one support base 49 is at the uppermost position, the other support base 49 is at the lowermost position.
As shown in FIGS. 2 and 3, concave-shaped guide grooves 144 and 145 opening downward are formed in the track unit 120 constituting the track 12. In the branch portion, the guide groove 144 is formed along the main path 12a, and the guide groove 145 is formed along the branch path 12b. The width of the guide grooves 144 and 145 is formed to be slightly larger than the outer diameter of the branch roller 26, and the branch rollers 26 and 26 moved to the uppermost position are formed on a pair of side surfaces formed in the guide grooves 144 and 145, respectively. Therefore, the left and right positions with respect to the traveling direction of the transport vehicle 13 are regulated.
Here, of the pair of side surfaces formed at opposite positions on the left and right sides inside the guide groove 144, the side surface formed inside the track 12 is defined as the guide surface 144A, and the side surface formed outside is defined as the guide surface 144B. . Similarly, of the pair of side surfaces formed in the guide groove 145, the side surface formed inside the track 12 is defined as a guide surface 145A, and the side wall formed outside is defined as a guide surface 145B.
Since the branch roller 26 is regulated by a pair of side walls formed in the guide groove, the conveyance vehicle 13 traveling along the branch portion is guided along the path by the guide groove.

  Further, as shown in FIG. 2, the pickup units 9 and 9 provided on both sides of the coupling body 36 are each provided with a core 52 for taking out electric power from the feeder lines 5 and 5 by electromagnetic induction. . The core 52 is formed in an E shape having two openings on the outside, and the feed lines 5 and 5 are inserted into the openings one by one. The feed lines 5 and 5 are supported by a feed line holder 66 fixed below the track 12.

The feed lines 5 and 5 have a configuration in which a pair forming the forward path and the return path is provided along the track 12, and currents in opposite directions flow through the cross section of the pair of feed lines.
In the core 52, a pickup coil 67 is wound around a central side wall 52 a among the side walls extending to the outside of the transport vehicle 13. The lines of magnetic force generated from the feeder lines 5 and 5 are supplied with currents in opposite directions, so that they merge at the side wall 52a, receive an amplification action by the core 52, and generate an induced electromotive current in the pickup coil 67. The transport vehicle 13 uses the induced electromotive current generated by the pickup coil 67 to drive the power equipment inside the transport vehicle 13 such as the motor 16.

<Branching roller>
Next, the branch device 2 provided in the transport vehicle 13 will be described.
As shown in FIG. 3, the transport vehicle 13 is provided with guide rollers 24 and 24 on the left and right with respect to the traveling direction. In the present embodiment, a pair of guide rollers 24 and 24 are provided on the left and right sides of the wheel support portions 32 and 32 provided on the front and rear sides of the transport vehicle 13, respectively, so that eight wheels are provided as a whole.
Further, side walls 41, 41... Are provided on the left and right side portions of the track 12 regardless of the branched portion and the non-branched portion. The transport vehicle 13 is pushed toward the center of the track 12 by the reaction when the left and right guide rollers 24 and 24 collide with the side walls 41 and 41, so that the transport vehicle 13 travels on the center line of the track 12 on average. That is, the left and right positions of the branch rollers 26 and 26 are restricted by the opposing side walls 41 and 41, and the transport vehicle 13 travels along the track direction.

The distance between the side walls 41 and 41 facing left and right in the track direction is configured to be wider than the distance between the guide rollers 24 and 24 on the left and right of the transport vehicle 13. The distance between the guide rollers 24 and 24 means the entire width of the transport vehicle 13. Therefore, the conveyance vehicle 13 can move in the left-right direction with respect to the traveling direction (track direction) in the opposing side walls 41.
In addition, the transporting vehicle 13 is provided with a branching roller 26 that can advance toward the track 12 (the base 142). In the present embodiment, for each branching device 2, 2 provided before and after the transport vehicle 13, support stands 49, 49 are provided on the left and right, and branch rollers 26, 26 are provided on the front and rear for each support base 49. Eight wheels are provided.

  And in the branch part which the branch path 12b and the main path 12a connect, a pair of guide surface which regulates the left-right position of the branch roller 26 which advanced to the track 12 side is provided along both paths 12a and 12b. . In the present embodiment, as described above, the concave guide grooves 144 and 145 are formed in the base portion 142 of the track 12, and a pair of side surfaces formed at opposite positions on the left and right sides in the guide groove 144 are defined as a pair of guide surfaces. 144A and 144B. Similarly, a pair of guide surfaces 145A and 145B are formed in the guide groove 145. The guide surfaces formed along the main path 12a are guide surfaces 144A and 144B, and the guide surfaces formed along the branch path 12b are guide surfaces 145A and 145B.

  The branch roller 26 that has advanced to the track 12 side is regulated in the left-right position by a pair of guide surfaces. The distance between the pair of guide surfaces (the left and right widths of the guide grooves 144 and 145) is formed to be slightly larger than the outer diameter of the branch roller 26. This is because the pair of front and rear branch rollers 26 and 26 provided on the support base 49 can pass smoothly between the pair of guide surfaces formed on the curved surface in the curved portion (branch portion) of the track 12. It is.

<Example>
Here, the Example regarding this invention is described using FIG. FIG. 4 is a plan view showing the track 12 fixed to the ceiling from below.
In FIG. 1, a simplified track 12 is shown for the schematic explanation of the automatic guided vehicle track system 1, but in FIG. 4, a complicated route laid in actual operation is shown. A trajectory 12 of the configuration is shown.

In FIG. 4, the broken lines indicate the guide grooves 144 and 145 described above. On the lower surface of the running rail 40 of the track 12, markings 100a and 100b made of paint or tape are provided as visual confirmation means for the guide grooves 144 and 145. The markings 100a and 100b are continuously marked corresponding to the continuous portions of the left and right guide grooves 144 and 145. The marking 100a corresponds to the guide groove 145, and the marking 100b corresponds to the guide groove 144.
The pair of left and right branch rollers 26 and 26 are distinguished by reference numerals 26a and 26b, the branch roller 26a corresponds to the guide groove 145, and the branch roller 26b corresponds to the guide groove 144.

In the above description, the markings 100a and 100b are continuously applied along the continuous portions of the guide grooves 144 and 145. However, even if the marking is applied only to the position where the end portions of the guide grooves 144 and 145 are present, the transport vehicle If the position of the end of the groove in the traveling direction is known, the presence or absence of the groove can be known, and the position where the branch roller can be switched without any problem can be surely found. You may mark the position of the groove | channel which can switch a branch roller without a problem in front of it instead of the edge part of a groove | channel. Conversely, a position without a groove may be marked. When marking is performed continuously, straight-line marking may be used. However, when marking is performed only at the end position, a graphic such as a circle or a square may be drawn that is easy to draw attention.
Further, when the transport vehicle 13 passes, the lower side surface of the side wall 41 of the track 12 is difficult to see because it is hidden from the transport vehicle 13 when viewed from below, so the markings 100a and 100b are applied to the outer surface of the side wall 41 of the track 12. There is no problem.

FIG. 5 illustrates a track in which only the guide groove 145 is formed among the pair of guide grooves 144 and 145 formed on the left and right sides of the track 12. In the bifurcation (FIG. 2), both the left and right guide grooves 144 and 145 are formed on the track 12, but in other parts, the guide grooves are formed only on one side of the left and right.
As shown in FIG. 5, suitable locations for applying the markings 100 a and 100 b include a lower surface position A of the traveling rail 40, an outer surface position B of the side wall 41, and a lower surface position C of the feeder holder 66. The traveling rail 40, the side wall 41, and the feeder holder 66 have a pair on the left and right. Of course, the marking 100a is provided on the traveling rail 40 on the side corresponding to the guide groove 145 on the left and right, and the guide groove 144 (FIG. 2) The marking 100b is applied to the corresponding traveling rail 40 or the like.
In the above-described embodiment, the markings 100a and 100b are provided only on the lower surface position A of the traveling rail 40 so that the operator can easily see the markings. It may be the lower surface position C of the holder 66, or all of them may be marked.

Here, consider a case where there is a trouble in the automatic guided vehicle system 1 that automatically drives the transport vehicle 13 and the operator directly operates the transport vehicle 13 by a remote controller or the like.
For example, it is assumed that the transport vehicle 13 is in a state of entering the branch portion P from the trunk side. As described above, the branch portion is a portion where the branch path 12b (FIG. 1) is branched from the main path 12a (FIG. 1) corresponding to the trunk. Moreover, the approach path to the branching section has one side as a trunk side, and the approach path to the branching section has two sides as a branch side.

Here, if it is desired to direct the transport vehicle 13 to the branching track in the Pa direction, the branching device 2 is operated so that the branching roller 26a of the transporting vehicle 13 protrudes toward the track 12, and the branching roller is placed in the guide groove 145. 26a is inserted. Then, the transport vehicle 13 travels along the guide groove 145. The above-described protrusion timing can be recognized by visually observing the end of the marking 100a at the start of the guide groove 145 on the branch track side.
On the other hand, if the transport vehicle 13 wants to move from the point P in FIG. 4 toward the branch track in the Pb direction, the branch roller 26 b of the transport vehicle 13 is protruded and the branch roller 26 b is inserted into the guide groove 144. Then, the transport vehicle 13 travels along the guide groove 144. The above-described protrusion timing can be recognized by visually observing the end of the marking 100b at the start of the guide groove 144 on the branch track side.
That is, when the worker visually confirms the starting end positions of the guide grooves 144 and 145, the worker responds according to a route (a route in the Pa direction or a route in the Pb direction) that the transport vehicle 13 is desired to face. The branch roller 26 on the side can be protruded, and the transport vehicle 13 can be moved in the direction desired by the operator.

Further, it is assumed that the transport vehicle 13 is in a state of moving from the trunk side of the branch portion Q to the branch side and further entering the branch side of the branch portion R.
When the transport vehicle 13 is operated to select and move the branch path in the Qb direction at the branch portion Q, the branch roller 26b enters the guide groove 144 (the guide groove on the right side in the traveling direction). If the transport vehicle 13 is further moved as it is, the transport vehicle 13 enters the branch portion R from the branch side. Here, of the two branch side paths of the branch part R, the branch side path (of the branch part R) connected to the branch path in the Qb direction from the branch part Q has a guide groove 145 (a guide on the left side in the traveling direction). Groove) is formed. For this reason, if the operator neglects to switch the branch roller 26, the branch roller 26b enters the guide groove 144 and enters the path without the guide groove 144 (the branch side path of the branch portion R). Become. In such a case, the branching roller 26b at the protruding position is pressed against the base 142 without the guide groove, which may cause the branching device 2 to break down.
In other words, the operator can visually check the end positions of the guide grooves 144 and 145 so that the operator can prevent an erroneous operation of projecting the branch roller 26 at a portion where the guide grooves 144 and 145 are not provided. A failure of the device 2 can be prevented.

The track of the transport vehicle in the present invention has the following configuration.
A groove formed along the traveling direction of the transport vehicle is provided at a position corresponding to the forward and backward projecting portion provided in the transport vehicle, and at least a part of the groove is intermittent in the travel direction of the transport vehicle. It is the track of the transport vehicle. The track is formed with a space for accommodating the traveling portion of the transport vehicle, and a groove for branching into this space is formed. The article support part of the transport vehicle is provided below the track, and is formed with slits that allow passage of members connecting the article support part and the travel part, and travel rails are formed on both right and left sides of the space. The position of the groove is marked outside. The groove is seen from the gap between the slits, and is difficult to see from the operator below the track. Since the track is suspended from the ceiling, the marking is preferably provided below the track, for example, on the lower surface of the traveling rail.
In the present embodiment, the article support portion is formed below the track. However, the article support portion may be formed above, and the track slit may be formed above the track. In this case as well, the groove cannot be visually recognized by an operator below the track.

In the present embodiment described above, the projecting portions that can be moved forward and backward provided in the transport vehicle are the branch rollers 26 a and 26 b that can be inserted into the track 12 by the branch device 2 provided in the transport vehicle 13. Further, guide grooves 144 and 145 are formed on the track 12 of the present embodiment along the traveling direction of the transport vehicle 13. The guide grooves 144 and 145 are configured to be intermittent in the traveling direction of the transport vehicle 13. In addition, the markings 100a and 100b are continuously provided along the guide grooves 144 and 145 at positions such as the lower surface position A of the traveling rail 40 that are visible to the operator outside the track 12.
The marks indicating the ends of the intermittent grooves refer to the markings at the start and end positions of the continuous markings 100a and 100b of the present embodiment. That is, this marking may be applied only to the start and end of the guide grooves 144 and 145.

  In this embodiment, the grooves (guide grooves 144 and 145 in this embodiment) are formed on the left and right sides of the track, and these left and right grooves are intermittently formed. However, only one groove is provided along the track. The case where the groove is formed and the groove is formed intermittently is also included in the present invention.

  Moreover, in this invention, in addition to the mark which shows the said edge part, the 2nd mark which shows the continuous part of the said groove | channel is formed continuously along the said groove | channel.

  In the present embodiment described above, the markings 100a and 100b are continuously provided along the guide grooves 144 and 145, and the inside except for the end portions of these markings 100a and 100b is the second mark. Applicable.

The schematic diagram of the automatic guided vehicle system which concerns on embodiment of this invention. Front sectional drawing of the conveyance vehicle which concerns on embodiment of this invention. The top view which shows the branch part of the track | orbit which concerns on embodiment of this invention. 1 is a schematic plan view of a track according to an embodiment of the present invention. Sectional drawing of the guide groove which is one Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Unmanned track system 12 Track 13 Transport vehicle 26 Branch roller 100 Marking 144 Guide groove 145 Guide groove

Claims (4)

A space for accommodating the traveling portion of the transport vehicle is formed, and at least part of the space is intermittently disposed along the travel direction of the transport vehicle at a position corresponding to the projecting portion provided in the traveling portion in the space. A track of a transport vehicle having a groove formed as a
A trajectory for a transport vehicle, characterized in that display means for displaying the presence or absence of the groove is provided outside the space. In the track of the transport vehicle according to claim 1,
The track of the transport vehicle, wherein the display means is a marking formed continuously according to the intermittent state of the groove. In the track of the transport vehicle according to claim 1 or 2,
The track has a branch portion that branches into left and right tracks, and the groove is a guide formed on the left and right tracks so that a branch roller of a branch device that is a protrusion provided in the traveling portion engages. A track of a transport vehicle characterized by being a groove. In the track of the transport vehicle according to any one of claims 1 to 3,
The space is formed by a pair of side walls, a base part that connects the upper ends of the side walls and in which the groove is formed, and a pair of traveling rails that are formed at the lower end of the side walls at a predetermined interval, and the display means Is provided on the lower surface of the traveling rail.

Images