Conveyance system and conveyor device

Abstract

To prevent damage of a conveyor device arranged on a floor surface connected by an expansion joint.SOLUTION: A conveyance system includes: a first conveyor device having a frame that supports a rotating body at a conveyance direction upstream end part of an article and at a conveyance direction downstream end part of the article, and a first contact part located downstream of the rotating body of the conveyance direction downstream end part; and a second conveyor device having the frame that supports the rotating body at the conveyance direction upstream end part of the article and at the conveyance direction downstream end part of the article, and a second contact part located upstream of the rotating body of the conveyance direction upstream end part, and facing the first contact part. When the first contact part and the second contact part come into contact with each other, at least one of the first contact part and the second contact part is movable toward the upstream side and the downstream side in the conveyance direction of the article.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a transport system and a conveyor device. [Background technology]

[0002] One example of an invention that prevents conveyors installed in buildings from being damaged in an earthquake is the conveyor device disclosed in Patent Document 1. This conveyor device is installed in a seismically isolated building adjacent to an earthquake-resistant building, and has a sharp tip that is positioned at a distance from the side floor of the earthquake-resistant building. When an earthquake causes the sharp tip to come into contact with the side floor of the earthquake-resistant building and a force greater than a certain level is applied to the sharp tip from the side floor of the earthquake-resistant building, the conveyor device slides to the side opposite the side floor of the earthquake-resistant building and retreats, thereby preventing collision with the conveyor device on the earthquake-resistant building side from being damaged. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3417530 Summary of the Invention [Problem to be solved by the invention]

[0004] When adjacent buildings are connected by an expansion joint, the floor surface on which the conveyor device is installed is flat from one building to the other. In this case, when the floor surface is flat from one building to the other, the conveyor device disclosed in Patent Document 1 has a problem in that the sharp tip of the conveyor device installed in one building cannot come into contact with the side of the floor of the other building, and therefore cannot slide in the event of an earthquake.

[0005] The present invention has been made in view of the above, and aims to prevent damage to conveyor devices placed on floor surfaces connected by expansion joints. [Means for solving the problem]

[0006] The conveying system of the present invention comprises a first conveyor device having a frame that supports a rotating body at the upstream end of the item in the conveying direction and the downstream end of the item in the conveying direction, and a first contact portion located downstream of the rotating body at the downstream end in the conveying direction; and a second conveyor device having a frame that supports a rotating body at the upstream end of the item in the conveying direction and the downstream end of the item in the conveying direction, and a second contact portion that is located upstream of the rotating body at the upstream end in the conveying direction and faces the first contact portion, and when the first contact portion and the second contact portion come into contact with each other, at least one of the first contact portion and the second contact portion is movable toward the upstream side or the downstream side in the conveying direction of the item.

[0007] The conveyor device of the present invention comprises a frame that supports rotating bodies at an upstream end in the conveying direction of the article and a downstream end in the conveying direction of the article, and a contact portion that is located upstream of the rotating body at the upstream end in the conveying direction or downstream of the rotating body at the downstream end in the conveying direction and is movable between the upstream side and the downstream side in the conveying direction of the article. [Effects of the Invention]

[0008] According to the present invention, damage to conveyor devices placed on floor surfaces connected by expansion joints can be suppressed. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram of a transport system according to an embodiment. [Figure 2] FIG. 2 is a perspective view of the conveyor device according to the embodiment. [Figure 3] FIG. 3 is a plan view of the vicinity of the sliding portion. [Figure 4] FIG. 4 is a side view of the vicinity of the slide portion. [Figure 5] FIG. 5 is a cross-sectional view taken along line AA in FIG. [Figure 6] FIG. 6 is a diagram showing a state in which the conveyor devices are close to each other. [Figure 7] FIG. 7 is a diagram showing a state in which the sliding portion has moved. [Figure 8] FIG. 8 is a side view of the vicinity of the slide portion according to the modified example. [Figure 9] FIG. 9 is a side view of the vicinity of the slide portion according to the modified example. [Figure 10] FIG. 10 is a plan view of the vicinity of the slide portion according to the modified example. [Figure 11] FIG. 11 is a cross-sectional view taken along line BB in FIG. [Figure 12] FIG. 12 is a plan view of the vicinity of the sliding portion according to the modified example. [Figure 13] FIG. 13 is a plan view of the vicinity of the sliding portion according to the modified example. [Figure 14] FIG. 14 is a plan view of the vicinity of the slide portion in the modified example. [Figure 15] FIG. 15 is a block diagram showing the configuration of the notification unit. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments described below. In addition, in the drawings, identical or corresponding elements are appropriately designated by the same reference numerals. Furthermore, it should be noted that the drawings are schematic, and the dimensional relationships between elements may differ from those in reality. The drawings may also include portions with different dimensional relationships and ratios. In addition, a Cartesian coordinate system of X, Y, and Z axes is appropriately shown in the drawings, and directions are explained using this. The X-axis and Y-axis directions are approximately horizontal, and the Z direction is approximately vertically upward. In the space represented by the Cartesian coordinate system, the direction in which the X component increases is referred to as the +X direction, and the direction in which the X component decreases is referred to as the -X direction. Similarly, for the Y and Z components, the direction in which the Y component increases is defined as the +Y direction, the direction in which the Y component decreases is defined as the -Y direction, the direction in which the Z component increases is defined as the +Z direction, and the direction in which the Z component decreases is defined as the -Z direction. Note that for convenience of explanation, the +Z direction may be referred to as upward, and the -Z direction as downward.

[0011] [Embodiment] FIG. 1 is a schematic diagram of a conveying system SYS according to an embodiment of the present invention. The conveying system SYS is disposed near an expansion joint EJ, which is an expansion joint connecting adjacent buildings B1 and B2, and conveys a pallet P on which cargo is placed. The conveying system SYS includes conveyor devices C1 and C2, with conveyor device C1 disposed in building B1 and conveyor device C2 disposed in building B2. Conveyor device C1 is an example of a first conveyor device, and conveyor device C2 is an example of a second conveyor device. In FIG. 1, the -X direction is the upstream side in the conveying direction of the pallet P, and the +X direction is the downstream side in the conveying direction of the pallet P. The Y-axis direction is the width direction of the conveyor devices C1 and C2, which is perpendicular to the conveying direction of the pallet P.

[0012] 2 is a perspective view of conveyor device C1. Conveyor device C1 is a chain conveyor that transports pallets P with chains 5. In this embodiment, conveyor device C2 differs from conveyor device C1 in the position where slide section 2 (described later) is provided, but other configurations are the same as conveyor device C1. Therefore, the configuration of conveyor device C1 will be described below as a representative, and a description of conveyor device C2 will be omitted.

[0013] Conveyor device C1 is an example of a frame according to the present invention and includes main frames 1a and 1b that are parallel to each other along the X-axis direction, multiple connecting frames 92 that extend along the Y-axis direction, multiple sub-frames 93 that extend along the Y-axis direction, and multiple support legs 91. The multiple support legs 91 are provided at predetermined intervals along the X-axis direction and horizontally support main frames 1a and 1b. Connecting frame 92 is fixed to support legs 91 that support main frame 1a and support legs 91 that support main frame 1b, connecting support legs 91 that are located at the same position along the X-axis. Sub-frames 93 are provided at predetermined intervals along the Y-axis direction, like support legs 91, and one end is fixed to main frame 1a and the other end is fixed to main frame 1b, connecting main frame 1a and main frame 1b.

[0014] Main frames 1a and 1b, which are examples of frames according to the present invention, extend along the X-axis direction and include a support portion 6 at the end on the -X direction side, and a support portion 7 and a slide portion 2 at the end on the +X direction side. Main frame 1a also supports a drive unit 31 at the end on the -X direction side. Support portion 6 is a portion that supports a drive shaft 33 along the Y-axis direction. Drive shaft 33 is provided with drive sprockets 3 at both ends in the Y-axis direction. Drive unit 31 is provided with a motor and gears (not shown) and rotates drive shaft 33.

[0015] Chain 5 is an endless roller chain that transports pallets P and is stretched over drive sprocket 3 and driven sprocket 4. When drive unit 31 operates, drive shaft 33 rotates, which in turn rotates drive sprocket 3. When drive sprocket 3 rotates, driven sprocket 4 and chain 5 rotate, and pallet P placed on chain 5 is transported in the +X direction. Drive sprocket 3 and driven sprocket 4 are an example of a rotating body according to the present invention. Drive sprocket 3 of conveyor devices C1 and C2 is supported by support portion 6 at its upstream end in the transport direction, and driven sprocket 4 of conveyor devices C1 and C2 is supported by support portion 7 at its downstream end in the transport direction.

[0016] Fig. 3 is a plan view of the vicinity of slide unit 2 provided in conveyor device C1, and Fig. 4 is a side view of the vicinity of slide unit 2 of main frame 1a provided in conveyor device C1. Fig. 5 is a cross-sectional view taken along line AA in Fig. 3. Support units 7 that support driven sprocket 4 are provided at the +X direction end of main frames 1a and 1b, and support slide unit 2 so that it can move in the X-axis direction.

[0017] The main frame 1a is hollow, and a rail groove 13a is formed in the top wall along the X-axis direction, and a rail groove 13b is formed in the bottom wall along the X-axis direction. The guide rail 11 is made of elastically deformable resin. The guide rail 11 supports the chain 5 that moves in the +X direction at the top of the main frame 1a, and is fitted into the rail groove 13a from one end to the other of the X-axis direction of the main frame 1a. The guide rail 12 is made of metal. The guide rail 12 supports the chain 5 that moves in the -X direction in the hollow part of the main frame 1a, and is fitted into the rail groove 13b from one end to the other of the X-axis direction of the main frame 1a. In addition, first, second, third, and fourth grooves 14, 15, 16, and 17, which are concave grooves, are formed along the X-axis direction on the +Y and -Y sides of the main frame 1a.

[0018] The support portion 7 is a portion that supports the driven sprocket 4. The support portion 7 is made up of a support member 71, a rotating shaft 72, an adjustment block 73, a nut 74, an adjustment bolt 75, a fixing bolt 76, and a tap plate 77.

[0019] The support member 71 is a portion that supports the rotating shaft 72. The support member 71 has a fixed portion 71a that is fitted into the first groove 14 and fixed to the main frame 1a, and a support portion 71b that supports the rotating shaft 72. The fixed portion 71a has a hole formed therein through which a fixing bolt 76 passes. The fixing bolt 76 passes through the fixed portion 71a and is fastened to a tap plate 77 that is fitted into the second groove 15, thereby fixing the support member 71 to the main frame 1a.

[0020] The support portion 71b has a groove 71c formed therein through which the rotating shaft 72 passes. The rotating shaft 72 is a portion that rotatably supports the driven sprocket 4, and is supported by the support portion 71b. The rotating shaft 72 has an adjustment block 73 attached to one end and a male thread on the other end. The rotating shaft 72 is fixed to the support portion 71b by fitting a nut 74 onto the other male threaded end.

[0021] The adjustment block 73 has a hole formed therein through which the adjustment bolt 75 passes. The adjustment bolt 75 is a part that supports the adjustment block 73. The position of the adjustment block 73 in the X-axis direction is adjusted by adjusting the position of the nut 78 relative to the adjustment bolt 75. When the position of the adjustment block 73 moves in the X-axis direction, the rotating shaft 72 fixed to the adjustment block 73 and the driven sprocket 4 supported by the rotating shaft 72 also move in the X-axis direction. When the driven sprocket 4 moves in the X-axis direction, the tension of the chain 5 that is stretched between the driving sprocket 3 and the driven sprocket 4 is adjusted.

[0022] The slide unit 2 is a component that prevents damage caused by contact between the conveyor apparatus C1 and the conveyor apparatus C2. The slide unit 2 is supported movably in the X-axis direction relative to the main frames 1a and 1b. Specifically, the slide unit 2 is supported on the +X-direction end of the main frame 1a of the conveyor apparatus C1 on the -Y-direction side, while the slide unit 2 is supported on the +X-direction end of the main frame 1b of the conveyor apparatus C1 on the +Y-direction side of the main frame 1b. Because the slide unit 2 supported on the main frame 1a and the slide unit 2 supported on the main frame 1b have the same configuration, the following description will represent the configuration of the slide unit 2 supported on the main frame 1a. Note that in the conveyor apparatus C2, the slide unit 2 is supported on the -Y-direction end of the main frame 1a on the -X-direction side, while the slide unit 2 is supported on the -X-direction end of the main frame 1b on the +Y-direction side of the main frame 1b.

[0023] The slide portion 2 is composed of a first bracket 21, a second bracket 22, a bolt 23, a gap roller 24, a support shaft 25, and a nut 26. The first bracket 21 has a hole formed therein through which a bolt 27 passes. The upper bolt 27 passes through the first bracket 21 and is fastened to a tap plate 28 fitted in the third groove 16, and the lower bolt 27 is fastened to a tap plate 28 fitted in the fourth groove 17, supporting the first bracket 21 movably in the X-axis direction relative to the main frame 1a.

[0024] The second bracket 22 supports the support shaft 25 and is fixed to the end of the first bracket 21 on the +X direction side by a bolt 23. The second bracket 22 has a hole through which the support shaft 25 passes and a recessed groove 22a formed in it, extending from the +X direction end to the -X direction at a predetermined depth, into which the gap rollers 24 fit. The support shaft 25 supports the gap rollers 24 and passes through the gap rollers 24. The support shaft 25 is disposed along the Y-axis direction and rotatably supports the gap rollers 24. The support shaft 25 has external threads on both ends and is inserted into holes formed in the second bracket 22 and fixed to the second bracket 22 by a nut 26. The gap rollers 24, which are an example of a contact portion, are cylindrical and support the pallet P moving from the conveyor apparatus C1 to the conveyor apparatus C2. The gap rollers 24 of the conveyor apparatus C1 are an example of a first contact portion, and the gap rollers 24 of the conveyor apparatus C2 are an example of a second contact portion. The height from the floor of building B1 to the upper end of gap roller 24 is the same as the height from the floor of building B1 to the upper end of chain 5, allowing pallet P to move smoothly from chain 5 to gap roller 24. First bracket 21 and second bracket 22 are examples of brackets according to the present invention. Note that in the present invention, first bracket 21 and second bracket 22 may be formed integrally.

[0025] Fig. 6 is a diagram showing a state in which buildings B1 and B2 have come closer to each other due to an earthquake. Fig. 7 is a diagram showing a state in which slide section 2 has moved in the -X direction from the state shown in Fig. 4. As shown in Fig. 1, before the earthquake occurred, slide section 2 was moved in the +X direction as shown in Fig. 4, and conveyor devices C1 and C2 were installed so that gap rollers 24 provided on conveyor device C1 and gap rollers 24 provided on conveyor device C2 faced each other at a distance.

[0026] If an earthquake causes buildings B1 and B2 to approach each other, gap rollers 24 of conveyor device C1 and gap rollers 24 of conveyor device C2 will come into contact. In conveyor devices C1 and C2, bolts 27 are movable in the X-axis direction along third groove 16 and fourth groove 17, so slide portion 2 of conveyor device C1 moves in the -X direction along third groove 16 and fourth groove 17, and slide portion 2 of conveyor device C2 moves in the +X direction.

[0027] In this way, when adjacent conveyor devices C1, C2 approach each other and the gap rollers 24 of the conveyor devices C1, C2 come into contact with each other, the slide section 2 equipped with the gap rollers 24 moves in the opposite direction to the adjacent conveyor device along the transport direction of the pallet P. Therefore, even if the gap rollers 24 come into contact with each other, the movement of the gap rollers 24 absorbs the impact from the adjacent conveyor device, thereby preventing the conveyor devices C1, C2 from coming into contact and being damaged.

[0028] [Variations] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and can be implemented in various other forms. For example, the above-described embodiments may be modified as follows to implement the present invention. The above-described embodiments and the following modifications may be combined with each other. The present invention also includes configurations in which the components of the above-described embodiments and modifications are appropriately combined. Furthermore, further effects and modifications can be easily derived by those skilled in the art. Therefore, the broader aspects of the present invention are not limited to the above-described embodiments and modifications, and various modifications are possible.

[0029] 8 and 9 are side views of the vicinity of slide portion 2A according to a modified example. In the drawings, the same components of slide portion 2A as those of slide portion 2 are denoted by the same reference numerals, and their description will be omitted. In slide portion 2A, first bracket 21 has through-hole 21a extending in the Y-axis direction and formed along the X-axis direction. When first bracket 21 has through-hole 21a, bolt 27 passes through through-hole 21a and is fastened to tap plate 28 to fix its position in the X-axis direction, and first bracket 21 can move in the X-axis direction within the range of through-hole 21a.

[0030] When gap rollers 24 provided on slide section 2A of conveyor apparatus C1 come into contact with gap rollers 24 provided on slide section 2A of conveyor apparatus C2, slide section 2A moves along through hole 21a relative to bolt 27, which fixes its position in the X-axis direction, as shown in Figure 9, so slide section 2A of conveyor apparatus C1 moves in the -X direction, and slide section 2A of conveyor apparatus C2 moves in the +X direction. Therefore, even if gap rollers 24 come into contact with each other, the movement of slide section 2A absorbs the impact from the adjacent conveyor apparatus, preventing damage to conveyor apparatus C1 and C2 due to contact.

[0031] Fig. 10 is a side view of the vicinity of the slide portion 2 provided in the conveyor device C1 according to the modified example, and Fig. 11 is a cross-sectional view taken along line BB in Fig. 10. As shown in Figs. 10 and 11, the main frames 1a and 1b according to the modified example may be provided with a slide portion 2 on the +Y direction side at the end on the +X direction side in addition to the side surface on the -Y direction side.

[0032] 12 is a plan view of the vicinity of slide unit 2B according to a modified example. The same components of slide unit 2B as those of slide unit 2 are denoted by the same reference numerals in the drawing, and their description will be omitted. Slide unit 2B has first brackets 21A and 21B having the same shape as first bracket 21. First bracket 21A is supported on the -Y direction side of main frame 1a by bolt 27 and tap plate 28, and first bracket 21B is supported on the +Y direction side of main frame 1a by bolt 27 and tap plate 28. Slide unit 2B also has second brackets 22A and 22B, gap roller 24b, and support shaft 25b.

[0033] The second brackets 22A and 22B are components that support the support shaft 25b. The second bracket 22A is fixed to the end of the first bracket 21A on the +X direction side by a bolt 23, and the second bracket 22B is fixed to the end of the first bracket 21B on the +X direction side by a bolt 23. The support shaft 25b is a shaft that supports the gap roller 24b, and one end is supported by the second bracket 22A and the other end is supported by the second bracket 22B. The support shaft 25b passes through the gap roller 24b and rotatably supports the gap roller 24b. The gap roller 24b is cylindrical and supports the pallet P that moves from the conveyor device C1 to the conveyor device C2.

[0034] If an earthquake causes buildings B1 and B2 to approach each other, gap rollers 24b on slide portion 2B of conveyor apparatus C1 and gap rollers 24b on slide portion 2B of conveyor apparatus C2 will come into contact. In conveyor apparatuses C1 and C2, bolts 27 are movable in the X-axis direction along third groove 16 and fourth groove 17, so slide portion 2B of conveyor apparatus C1 moves in the -X direction along third groove 16 and fourth groove 17, and slide portion 2B of conveyor apparatus C2 moves in the +X direction. Therefore, even if gap rollers 24b come into contact with each other, the movement of slide portion 2B absorbs the impact from the adjacent conveyor apparatus, preventing damage to conveyor apparatuses C1 and C2 due to contact.

[0035] 13 is a side view of the vicinity of a sliding portion 2C according to a modified example. In the drawing, the same components of the sliding portion 2C as those of the sliding portion 2 are denoted by the same reference numerals, and their description will be omitted. In the sliding portion 2C, a through-hole 21c extending along the X-axis direction is formed on the +X-direction side of the first bracket 21. The sliding portion 2C also includes a second bracket 22c. The second bracket 22c has a hole formed therein through which a bolt 27 passes. The bolt 27 passes through the second bracket 22c and is fastened to a tap plate (not shown) on the +Y-direction side of the first bracket 21, supporting the second bracket 22c so that the second bracket 22c is movable in the X-axis direction.

[0036] When buildings B1 and B2 approach each other due to an earthquake, gap rollers 24 provided on slide portion 2C of conveyor apparatus C1 come into contact with gap rollers 24 provided on slide portion 2C of conveyor apparatus C2. In conveyor apparatuses C1 and C2, bolts 27 are movable in the X-axis direction along through holes 21c. Therefore, gap rollers 24 and second bracket 22c of conveyor apparatus C1 move in the -X direction along through holes 21c, and gap rollers 24 and second bracket 22c of conveyor apparatus C2 move in the +X direction. Thus, according to the above-described embodiment and modified example, when gap rollers 24 come into contact with each other, gap rollers 24 can move together with first bracket 21 relative to main frames 1a and 1b, or gap rollers 24 can move relative to fixed first bracket 21. Therefore, impacts from adjacent conveyor apparatuses are absorbed by the movement of gap rollers 24, and contact and damage to conveyor apparatuses C1 and C2 can be prevented.

[0037] In the present invention, a sensor may be used to detect the amount of movement of the slide portion 2, and an alarm may be issued based on the detection result. In this modification, a proximity sensor 104 that detects the approach of an object in a non-contact manner is fixed to the third groove 16 on the -Y direction side of the main frame 1a, as shown in FIG. 14, for example. FIG. 15 is a block diagram of an alarm unit 100 that issues an alarm. The alarm unit 100 includes a control unit 101, an alarm light 102, and a display device 103.

[0038] The control unit 101 is, for example, a programmable logic controller (PLC), to which a proximity sensor 104, a warning light 102, and a display device 103 are connected. When the first bracket 21 approaches within a predetermined range, the proximity sensor 104 outputs a detection signal indicating that an object to be detected has been detected. When the control unit 101 acquires the detection signal output by the proximity sensor 104, it turns on the warning light 102 and notifies the user that the slide unit 2 has moved and the conveyor devices C1 and C2 have approached. Furthermore, when the control unit 101 acquires the detection signal output by the proximity sensor 104, it controls the display device 103 to display a screen notifying the user that the slide unit 2 has moved and the conveyor devices C1 and C2 have approached. According to this modification, the proximity sensor 104 can detect the movement of the slide unit 2, thereby notifying the user that the conveyor device C1 has approached the adjacent conveyor device C2.

[0039] In the above-described embodiment, the conveyor devices C1 and C2 are chain conveyors, but the conveyor devices C1 and C2 are not limited to chain conveyors and may be roller conveyors. When the conveyor devices C1 and C2 are roller conveyors, in the conveyor device C1, the gap roller 24 is supported downstream of the most downstream roller in the article conveying direction so as to be movable in the X-axis direction, and in the conveyor device C2, the gap roller 24 is supported upstream of the most upstream roller in the article conveying direction so as to be movable in the X-axis direction.

[0040] In the above-described embodiment, both the conveyor device C1 and the conveyor device C2 are provided with a slide portion 2, but it is also possible that only one of the conveyor device C1 and the conveyor device C2 is provided with one of the slide portions 2, 2A, 2B, and 2C.

[0041] In the above-described embodiment, the slide section 2 is provided with gap rollers 24 as a portion that contacts the adjacent conveyor device, but the portion that contacts the adjacent conveyor device is not limited to a cylindrical roller and may be a component of another shape as long as it is capable of supporting the pallet P. Also, in this modified example, the slide section 2 of either conveyor device C1 or conveyor device C2 may be provided with a component of a shape other than cylindrical instead of gap rollers 24. [Explanation of symbols]

[0042] 1a, 1b mainframe 2 Slide section 3 drive sprocket 4 driven sprocket 5 Chain 21 First Bracket 22 Second Bracket 24 Gap Roller 100 Information Department 101 Control section 102 Warning light 103 Display device C1 Conveyor device (first conveyor device) C2 Conveyor device (second conveyor device) SYS Transport System

Claims

1. a first conveyor device including a frame supporting a rotating body at an upstream end in an article conveying direction and a downstream end in the article conveying direction, and a first contact portion located downstream of the rotating body at the downstream end in the conveying direction; a second conveyor device including a frame supporting a rotor at an upstream end in the article conveying direction and a downstream end in the article conveying direction, and a second contact portion located upstream of the rotor at the upstream end in the conveying direction and facing the first contact portion; Equipped with When the first contact portion and the second contact portion come into contact with each other, at least one of the first contact portion and the second contact portion is movable toward the upstream side and the downstream side in the conveying direction of the article. Conveying system.

2. a bracket supported by the frame; A movable contact portion of the first contact portion and the second contact portion is fixed to the bracket, and the bracket is movable together with the contact portion toward the upstream side and downstream side in the conveying direction of the article, or the bracket is fixed to the frame, and a movable contact portion of the first contact portion and the second contact portion is movable relative to the bracket toward the upstream side and downstream side in the conveying direction of the article. The transport system according to claim 1 .

3. a sensor for detecting a position of the bracket relative to the frame; a notification unit that notifies that the position detected by the sensor is within a predetermined range; The transport system of claim 2 .

4. a frame supporting a rotating body at an upstream end in a conveying direction of the article and a downstream end in the conveying direction of the article; a contact portion located upstream of the rotating body at the upstream end in the conveying direction or downstream of the rotating body at the downstream end in the conveying direction, the contact portion being movable between the upstream side in the conveying direction of the article and the downstream side in the conveying direction; A conveyor device comprising:

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