Inspection route

Abstract

To provide an inspection route capable of improving the working environment of a worker inspecting a bridge by suppressing oppressive feelings in a landscape.SOLUTION: An inspection route is an inspection route arranged at the lower part of a bridge, and is provided with a scaffold panel arranged below the bridge along the horizontal plane, a side panel for vertically connecting between the width-direction end of the bridge in a scaffold panel and the bridge, wherein the side panel has a first panel connected to the lower part of the bridge, a second panel having an upper-end part disposed widthwise more inward rather than the lower end part of the first panel, and a step part connecting the lower end part of the first panel and the upper-end part of the second panel.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an inspection path. [Background technology]

[0002] Bridges over which vehicles and pedestrians travel need to protect the undersides of the traffic areas because they are exposed to corrosive environments due to exhaust gases, moisture from the sea or river, salt, and the like. In addition, for such bridges, it is necessary to secure an inspection path to check the safety of the bridge. For example, a technology is known in which a protective covering material is provided under the bridge to protect the underside, and the protective covering material itself is used as an inspection path (see, for example, Patent Document 1). Also, a technology is known in which a bottom panel and a side panel are used to protect the underside of a bridge (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6124403 [Patent Document 2] Patent No. 7064335 Summary of the Invention [Problem to be solved by the invention]

[0004] In the configuration described in Patent Document 1, a protective cover material is added to an existing bridge, which increases the overall thickness of the bridge and may create a sense of oppression in terms of the scenery. In addition, the inside of the inspection road is dark even during the day and gets hot in the summer, which makes the work environment worse when inspecting the bridge. Furthermore, in the configuration described in Patent Document 2, the side panels may create a sense of oppression in terms of the scenery on the side of the bridge.

[0005] The present invention has been made in consideration of the above, and aims to provide an inspection route that can reduce the sense of oppression in terms of scenery and improve the working environment of workers inspecting bridges. [Means for solving the problem]

[0006] The inspection route of the present invention is an inspection route arranged under a bridge, and comprises scaffolding panels arranged along a horizontal plane below the bridge, and side panels connecting the bridge in the vertical direction to the widthwise end of the scaffolding panel, the side panels having a first panel connected to the underside of the bridge, a second panel whose upper end is arranged more inward in the width direction than the lower end of the first panel, and a step portion connecting the lower end of the first panel and the upper end of the second panel. Effect of the Invention

[0007] According to the present invention, it is possible to provide an inspection route that can reduce the sense of oppression in terms of scenery and improve the working environment of workers inspecting bridges. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing an example of an inspection path according to this embodiment. [Diagram 2] FIG. 2 is a cross-sectional view showing an example of an inspection path according to this embodiment. [Diagram 3] FIG. 3 is a cross-sectional view showing another example of the inspection path according to the present embodiment. [Figure 4] FIG. 4 is a cross-sectional view showing another example of the inspection path according to the present embodiment. [Diagram 5] FIG. 5 is a cross-sectional view showing another example of the inspection path according to the present embodiment. [Figure 6] FIG. 6 is a cross-sectional view showing another example of the inspection path according to this embodiment. [Figure 7] FIG. 7 is a cross-sectional view showing another example of the inspection path according to the present embodiment. [Figure 8] FIG. 8 is a cross-sectional view showing another example of the inspection path according to the present embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of an inspection path according to the present invention will be described with reference to the drawings. Note that the present invention is not limited to this embodiment. In addition, the components in the following embodiments include those that are replaceable and easy for a person skilled in the art, or those that are substantially the same.

[0010] Fig. 1 is a perspective view showing an example of an inspection path 100 according to this embodiment. Fig. 2 is a cross-sectional view showing an example of the inspection path 100. Fig. 2 shows a cross section taken along a plane perpendicular to the bridge axis direction. As shown in Figs. 1 and 2, the inspection path 100 protects the lower part of a deck slab 101 and girder materials 103 in a bridge BG.

[0011] Here, the bridge BG will be described. The bridge BG has a deck 101, a road surface 102, girders 103, and a wall parapet 104. The deck 101 is laid across, for example, in one direction. Hereinafter, the direction in which the deck 101 is laid across is referred to as the bridge axis direction D1. Also, the direction perpendicular to the bridge axis direction D1 and the up-down direction D3 along the vertical axis is referred to as the width direction D2. The road surface 102 is the portion on which vehicles, pedestrians, etc. pass. The road surface 102 is placed on the deck 101.

[0012] The girder materials 103 are provided on the lower part 101a of the deck 101 (hereinafter referred to as the bridge lower part) and are arranged in a state where multiple beams are lined up in the width direction D2. The beam materials 103 are formed into plate shapes, for example, from steel, and are arranged along the bridge axis direction D1 of the deck slab 101. The wall balustrades 104 are arranged on both ends of the road surface 102 in the width direction D2.

[0013] The inspection path 100 comprises a scaffolding panel 10 and a side panel 20. The scaffolding panel 10 is disposed below the bridge lower portion 101a to protect the lower portion 101a. The scaffolding panel 10 is, for example, flat, and disposed along the lower portion 101a. The scaffolding panel 10 is configured with a plurality of scaffolding panels disposed in the bridge axis direction D1 and the width direction D2, covering the bridge lower portion 101a. The scaffolding panel 10 may be disposed along a horizontal plane (a plane parallel to the bridge axis direction D1 and the width direction D2).

[0014] The side panel 20 connects the end of the scaffold panel 10 in the width direction D2 to the bridge BG in the up-down direction D3. Although Fig. 1 and Fig. 2 show an example in which the side panel 20 is arranged on one side in the width direction D2, the side panel 20 is also arranged on the other side in the width direction D2.

[0015] The side panel 20 has a first panel 21, a second panel 22, and a step portion 23. The first panel 21 has an upper end portion 21a connected to the lower portion of the bridge BG (bridge lower portion 101a). The first panel 21 extends downward from the bridge lower portion 101a. The first panel 21 is, for example, flat, and is disposed perpendicular to the width direction D2. The first panel 21 has a liquid guide portion 21c at its lower end portion 21b. The liquid guide portion 21c is provided at the outer end portion of the first panel 21 in the width direction D2, and protrudes downward from the lower end portion 21b. The liquid guide portion 21c guides liquid, such as rainwater, flowing downward along the outer surface of the first panel 21 in the width direction D2.

[0016] The second panel 22 is flat and has a lower end 21b connected to the scaffold panel 10. The second panel 22 extends upward from the scaffold panel 10. The second panel 22 is, for example, flat and arranged perpendicular to the width direction D2. The second panel 22 is arranged inside the first panel 21 in the width direction D2. In this configuration, the second panel 22 has an upper end 22a arranged inside the lower end 21b of the first panel 21 in the width direction D2.

[0017] The step portion 23 connects the lower end portion 21b of the first panel 21 and the upper end portion 22a of the second panel 22. The step portion 23 is formed, for example, separately from the first panel 21 and the second panel 22, and is fixed to the first panel 21 and the second panel 22 via a fixing member such as a bolt. The step portion 23 may be formed integrally with at least one of the first panel 21 and the step portion 23. The step portion 23 is, for example, in the shape of a flat plate, and is disposed along a horizontal plane.

[0018] By providing the step portion 23, the lower side of the side panel 20 in the up-down direction D3 is recessed inward in the width direction D2 relative to the upper side. In addition, by providing the step portion 23, a shadow is generated near the step portion 23 when light such as sunlight is irradiated. Therefore, combined with the above-mentioned shape from the top to the bottom of the side panel 20, it is possible to reduce the feeling of oppression in appearance.

[0019] FIG. 3 is a cross-sectional view showing another example of the inspection path. FIG. 3 shows an enlarged view of the step portion of the side panel and its vicinity. In the inspection path 100A shown in FIG. 3, the side panel 30 has a first panel 31, a second panel 32, a step portion 33, and an opening / closing mechanism 34. The opening / closing mechanism 34 slides the step portion 33 in the width direction D2. The opening / closing mechanism 34 opens and closes between the inspection path interior K1 and the inspection path exterior K2 by sliding the step portion 33. The opening / closing mechanism 34 may have a guide portion (not shown) that guides the step portion 33 in the width direction D2. The step portion 33 is connected to the first panel 31 by a fastening member 36 such as a bolt via the mounting portion 33a at the connecting position P1.

[0020] When the fastening members 36 are removed, the step portion 33 is released from the connection with the first panel 31. When the step portion 33 is released from the connection with the first panel 31, the step portion 33 becomes slidable in the width direction D2.

[0021] When the step portion 33 is disposed at the connecting position P1, the gap portion R1 between the first panel 31 and the second panel 32 is blocked by the step portion 33. In this case, the side panel 30 is in a state where the gap between the inspection path interior K1 and the inspection path exterior K2 is blocked.

[0022] By sliding the step portion 33 inward in the width direction D2 relative to the connecting position P1, the gap portion R1 between the first panel 31 and the second panel 32 is opened. The gap portion R1 communicates between the inspection path interior K1 and the inspection path exterior K2. Therefore, in this case, the side panel 30 is in a state where the inspection path interior K1 and the inspection path exterior K2 are open.

[0023] In the side panel 30, the step portion 33 and the opening / closing mechanism 34 constitute a functional portion 35. The functional portion 35 can ventilate between the inspection path interior K1 and the inspection path exterior K2 by opening the gap portion R1 with the opening / closing mechanism 34. In addition, by opening the gap portion R1, light can be let in from the inspection path exterior K2 to the inspection path interior K1. In this way, the functional portion 35 can ventilate and let in light.

[0024] FIG. 4 is a cross-sectional view showing another example of the inspection path. FIG. 4 shows an enlarged view of the step portion of the side panel and its vicinity. In the inspection path 100B shown in FIG. 4, the side panel 40 has a first panel 41, a second panel 42, a step portion 43, and an opening / closing mechanism 44. The opening / closing mechanism 44 slides the movable portion 42a of the second panel 42 in the vertical direction D3. The opening / closing mechanism 44 opens and closes between the inspection path interior K1 and the inspection path exterior K2 by sliding the movable portion 42a. The movable portion 42a is formed, for example, hollow and is arranged in a state of covering the upper end portion of the base portion 42b. The movable portion 42a can move in the vertical direction along the base portion 42b. The movable portion 42a can be fixed to the base portion 42b at the connection position P2 by a fastening member 46 such as a bolt. FIG. 4 also shows a view of the second panel 42 viewed from the inside to the outside in the width direction D2 within a two-dot chain line frame. The movable portion 42a has an opening 42d extending in the vertical direction so as not to interfere with the fastening member 46 when moving in the vertical direction.

[0025] The second panel 42 is capable of moving the movable part 42a relative to the base part 42b by loosening the fastening member 46. The movable part 42a is provided with a protruding part 42c that protrudes inward in the width direction D2. For example, an operator can slide the movable part 42a by gripping the protruding part 42c. The second panel 42 is capable of sliding in the up-down direction D3 by the movable part 42a being movable relative to the base part 42b. The opening 42d of the movable part 42a slides in the up-down direction along the fastening member 46. When the movable part 42a moves downward from the connecting position P2, the upper end of the opening 42d abuts against the fastening member 46, so that the movable part 42a is supported by the fastening member 46. The movable part 42a being supported by the fastening member 46 restricts the downward movement of the movable part 42a.

[0026] When the movable part 42a of the second panel 42 is disposed in the connecting position P2, the gap portion R2 between the first panel 41 and the movable part 42a of the second panel 42 is blocked by the movable part 42a. In this case, the side panel 40 is in a state where the space between the inspection path interior K1 and the inspection path exterior K2 is blocked.

[0027] By sliding the movable part 42a downward in the up-down direction D3 relative to the connecting position P2, the gap portion R2 between the first panel 41 and the movable part 42a is opened. The gap portion R2 communicates between the inside K1 of the inspection path and the outside K2 of the inspection path. Therefore, in this case, the side panel 40 is in a state where the gap between the inside K1 of the inspection path and the outside K2 of the inspection path is opened.

[0028] In the side panel 40, the movable part 42a of the second panel 42 and the opening / closing mechanism 44 constitute a functional part 45. The functional part 45 can ventilate between the inspection path interior K1 and the inspection path exterior K2 by opening the gap part R2 with the opening / closing mechanism 44. In addition, by opening the gap part R2, light can be let in from the inspection path exterior K2 to the inspection path interior K1. In this way, the functional part 45 can ventilate and let in light.

[0029] FIG. 5 is a cross-sectional view showing another example of the inspection path. FIG. 5 shows an enlarged view of the step portion of the side panel and its vicinity. In the inspection path 100C shown in FIG. 5, the side panel 50 has a first panel 51, a second panel 52, a step portion 53, and an opening / closing mechanism 54. The opening / closing mechanism 54 rotates the step portion 53 around a rotation axis AX. The rotation axis AX is arranged along the bridge axis direction D1. The opening / closing mechanism 54 opens and closes between the inspection path inside K1 and the inspection path outside K2 by rotating the step portion 53. The opening / closing mechanism 54 has a shaft portion 54a and a bearing portion 54b arranged at the outer end of the step portion 53 in the width direction D2. The shaft portion 54a and the bearing portion 54b are formed by appropriately deforming the shapes of the first panel 51 and the step portion 53. The opening / closing mechanism 54 rotates the step portion 53 around the outer end of the step portion 53 in the width direction D2. The step portion 53 is supported by the second panel 52 at a support position P3.

[0030] When the step portion 53 is disposed at the support position P3, the gap portion R3 between the first panel 51 and the second panel 52 is blocked by the step portion 53. In this case, the side panel 50 is in a state where the gap between the inspection path interior K1 and the inspection path exterior K2 is blocked.

[0031] By rotating the step portion 53 so as to lift the inner end portion of the step portion 53 in the width direction D2, the gap portion R3 between the first panel 51 and the second panel 52 is opened. The gap portion R3 communicates between the inspection path interior K1 and the inspection path exterior K2. Therefore, in this case, the side panel 50 is in a state where the inspection path interior K1 and the inspection path exterior K2 are open.

[0032] In the side panel 50, the step portion 53 and the opening / closing mechanism 54 constitute a functional portion 55. The functional portion 55 can ventilate between the inspection path interior K1 and the inspection path exterior K2 by opening the gap portion R3 with the opening / closing mechanism 54. In addition, by opening the gap portion R3, light can be let in from the inspection path exterior K2 to the inspection path interior K1. In this way, the functional portion 55 can ventilate and let in light.

[0033] FIG. 6 is a cross-sectional view showing another example of the inspection path. FIG. 6 shows an enlarged view of the vicinity of the step of the side panel. In the inspection path 100D shown in FIG. 6, the side panel 60 has a first panel 61, a second panel 62, and a step 63. In the inspection path 100D, the step 63 has a light-transmitting portion 64. The step 63 is, for example, a rectangular box shape, and openings 63c and 63d are formed in the upper surface portion 63a and the lower surface portion 63b, respectively. The light-transmitting portion 64 is arranged so as to close the opening 63d. The light-transmitting portion 64 is formed, for example, using a resin material having light transparency. The light-transmitting portion 64 transmits light between the inspection path interior K1 and the inspection path exterior K2.

[0034] In the side panel 60, the step portion 63 and the light transmitting portion 64 configure a functional portion 65. The functional portion 65 can admit light from the outside K2 of the inspection path to the inside K1 of the inspection path via the light transmitting portion 64. In this manner, the functional portion 65 can admit light.

[0035] FIG. 7 is a cross-sectional view showing another example of an inspection path. FIG. 7 shows an enlarged view of the step portion of the side panel. In the inspection path 100E shown in FIG. 7, the side panel 70 has a first panel 71, a second panel 72, and a step portion 73. In the inspection path 100E, the step portion 73 has a light-transmitting portion 74. The step portion 73 is, for example, a rectangular plate-like shape, and an opening 73a is formed. The step portion 73 has both ends in the width direction D2 bent upward. The bent portion 73b of the step portion 73 on the outer side in the width direction D2 is abutted against the lower end portion 71b of the first panel 71. The bent portion 73b is fastened to the first panel 71 via a fastening member 77. The inner end of the step portion 73 in the width direction D2 is supported or fixed to the second panel 72. The light-transmitting portion 74 is arranged to block the opening 73a. The light transmitting portion 74 is formed using, for example, a light-transmitting resin material, etc. The light transmitting portion 74 transmits light between the inspection path inside K1 and the inspection path outside K2.

[0036] In the side panel 70, the step portion 73 and the light transmitting portion 74 configure a functional portion 75. The functional portion 75 can admit light from the outside K2 of the inspection path to the inside K1 of the inspection path via the light transmitting portion 74. In this manner, the functional portion 75 can admit light.

[0037] As shown in FIG. 7, a reinforcing member 76 can be provided between the upper ends of the first panel 71 and the second panel 72. A plurality of reinforcing members 76 are arranged at a predetermined pitch in the bridge axis direction D1, for example. The reinforcing member 76 has an outer end in the width direction D2 fastened to the first panel 71 by a fastening member 78. The reinforcing member 76 has an inner end in the width direction D2 connected to the locking portion 73b of the step portion 73. In this way, the reinforcing member 76 is provided between the upper ends of the first panel 71 and the second panel 72, thereby increasing the strength of the side panel 70. The reinforcing member 76 does not have to be provided.

[0038] FIG. 8 is a cross-sectional view showing another example of the inspection path 100 shown in FIG. 1. FIG. 8 shows an enlarged view of the side panel. In the inspection path 100F shown in FIG. 8, the side panel 80 has a first panel 81, a second panel 82, and a step portion 83. The first panel 81 and the step portion 83 are similar to the first panel 21 and the step portion 23 of the side panel 20 described above. The second panel 82 is arranged such that the lower end 82b is located more inward in the width direction D2 than the upper end 82a. That is, the second panel 82 is arranged in a state inclined inward in the width direction D2 from the first panel 81 to the scaffold panel 10. With this configuration, the inspection path 100F has a shape in which the lower side in the vertical direction D3 gradually enters the inside in the width direction D2 relative to the upper side. For this reason, it is possible to further reduce the sense of oppression in appearance from the top to the bottom of the side panel 80. Note that the configurations shown in FIG. 3 to FIG. 7 may be applied to the inspection path 100F shown in FIG. 8.

[0039] As described above, the inspection path 100 in this embodiment is an inspection path 100 arranged under the bridge BG, and comprises a scaffolding panel 10 arranged along a horizontal plane below the bridge BG, and a side panel 20 that connects the end of the scaffolding panel 10 in the width direction of the bridge BG and the bridge BG in the vertical direction, and the side panel 20 has a first panel 21 connected to the bottom of the bridge BG, a second panel 22 whose upper end 22a is arranged widthwise more inward than the lower end 21b of the first panel 21, and a step portion 23 that connects the lower end 21b of the first panel 21 and the upper end 22a of the second panel 22.

[0040] According to this configuration, by providing the step portion 23, the lower side of the side panel 20 in the up-down direction D3 is recessed inward in the width direction D2 relative to the upper side. In addition, by providing the step portion 23, a shadow is generated near the step portion 23 when light such as sunlight is irradiated. Therefore, in combination with the above-mentioned shape from the top to the bottom of the side panel 20, it is possible to reduce the oppressive feeling in appearance.

[0041] In the inspection paths 100A, 100B, 100C, 100D, and 100E of this embodiment, the side panels 30, 40, 50, 60, and 70 have functional sections 35, 45, 55, 65, and 75 at or near the step section 23, which provide at least one of ventilation between the inspection path interior K1 surrounded by the scaffolding panel 10 and the side panels 30, 40, 50, 60, and 70 and the inspection path exterior K2 that is outside the inspection path interior K1, and lighting from the inspection path exterior K2 to the inspection path interior K1.

[0042] According to this configuration, the step portion 23 can be used to provide lighting and ventilation functions, thereby improving the working environment for workers on the inspection path 100.

[0043] In the inspection paths 100A, 100B, 100C according to this embodiment, the side panels 30, 40, 50 have opening and closing mechanisms 34, 44, 54 for opening and closing between the inspection path interior K1 and the inspection path exterior K2, and the functional sections 35, 45, 55 include the opening and closing mechanisms 34, 44, 54.

[0044] According to this configuration, by opening the space between the inspection path interior K1 and the inspection path exterior K2 with the opening / closing mechanisms 34, 44, 54, lighting and ventilation can be achieved, improving the work environment. Also, by closing the space between the inspection path interior K1 and the inspection path exterior K2 with the opening / closing mechanisms 34, 44, 54, deterioration due to light such as sunlight and corrosion due to sea breezes, exhaust gases, etc. can be prevented.

[0045] In the inspection path 100A according to this embodiment, the opening and closing mechanism 34 slides the step portion 33 in the width direction.

[0046] According to this configuration, the door can be opened and closed without lifting the step portion 33, so the burden of the opening and closing work is small. Also, the opening and closing amount can be adjusted, so the degree of lighting and ventilation can be controlled as desired. Also, the maintenance of the lower end portion 21b of the first panel 21 can be easily performed.

[0047] In the inspection path 100B according to this embodiment, the opening and closing mechanism 44 slides the upper part of the second panel 22 in the vertical direction.

[0048] With this configuration, there is no inward protrusion in the width direction D2 when the scaffolding panel 10 is opened, allowing smooth passage over the panel.

[0049] In the inspection path 100C according to this embodiment, the opening and closing mechanism 54 rotates the step portion 53 around the outer end of the step portion 53 in the width direction D2.

[0050] According to this configuration, by rotating the step portion 53, it is possible to easily switch between opening and closing between the inside K1 of the inspection path and the outside K2 of the inspection path.

[0051] In the inspection path 100D according to this embodiment, the step portion 63 has a light transmitting portion 64 that transmits light.

[0052] According to this configuration, light can be taken in from the outside K2 of the inspection path to the outside K2 of the inspection path through the light transmitting portion 64, so that light can be let in without performing opening and closing operations.

[0053] The inspection path 100E according to this embodiment further includes a reinforcing member 76 disposed between the first panel 71 and the upper end of the second panel 72.

[0054] According to this configuration, by arranging the reinforcing member 76, the side panel 70 can be appropriately reinforced.

[0055] In the inspection path 100 according to this embodiment, the first panel 21 has a liquid guide portion 21c at the lower end portion 21b that guides the flow of liquid.

[0056] According to this configuration, the liquid guide portion 21c is provided, so that the side panel 20 can be prevented from being soiled by rainwater. [Explanation of symbols]

[0057] AX...rotation axis, BG...bridge, D1...bridge axis direction, D2...width direction, D3...vertical direction, K1...inside of inspection path, K2...outside of inspection path, P1, P2...connection position, P3...support position, R1, R2, R3...gap portion, 10...scaffolding panel, 20, 30, 40, 50, 60, 70, 80...side panel, 21, 31, 41, 51, 61, 71, 81...first panel, 21a, 22a...upper end, 21b...lower end, 21c...liquid guide portion, 22, 32, 42, 52, 62, 72, 82...second panel, 23, 33, 43, 53, 63, 73, 83...step portion , 33a... mounting portion, 34, 44, 54... opening and closing mechanism, 35, 45, 55, 65, 75... functional portion, 36, 46... fastening member, 42a... movable portion, 42b... base portion, 42c... stopper, 54a... shaft member, 54b... bearing portion, 63a... upper surface portion, 63b... lower surface portion, 63c, 63d, 73a... opening portion, 64, 74... light transmitting portion, 73b... engaging portion, 76... reinforcing member, 100, 100A, 100B, 100C, 100D, 100E, 100F... inspection path, 101... deck slab, 101a... bridge lower portion, 102... road surface, 103... girder material, 104... wall railing

Claims

1. An inspection path located under a bridge, A scaffolding panel disposed along a horizontal plane below the bridge; A side panel that vertically connects the end of the scaffold panel in the width direction of the bridge to the bridge; Equipped with The side panel includes: A first panel connected to a lower portion of the bridge; a second panel having an upper end portion disposed on the inner side in the width direction than a lower end portion of the first panel; a step portion connecting the lower end portion of the first panel and the upper end portion of the second panel. Inspection path.

2. The side panel has a functional part at or near the step portion that performs at least one of ventilation between the inside of the inspection path surrounded by the scaffold panel and the side panel and the outside of the inspection path that is outside the inside of the inspection path, and lighting from the outside of the inspection path to the inside of the inspection path.

2. The inspection path according to claim 1.

3. The side panel has an opening / closing mechanism for opening and closing between the inside of the inspection path and the outside of the inspection path, The functional portion includes the opening and closing mechanism.

3. An inspection path as claimed in claim 2.

4. The opening and closing mechanism slides the step portion in the width direction. An inspection path as claimed in claim 3.

5. The opening and closing mechanism slides an upper portion of the second panel in a vertical direction. An inspection path as claimed in claim 3.

6. The opening and closing mechanism rotates the step portion around an outer end portion of the step portion in the width direction. An inspection path as claimed in claim 3.

7. The step portion has a light transmitting portion that transmits light.

3. An inspection path as claimed in claim 2.

8. a reinforcing member disposed between the first panel and the upper end of the second panel. An inspection path as claimed in claim 7.

9. The first panel has a liquid guide portion at the lower end portion for guiding a flow of liquid.

2. The inspection path according to claim 1.

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