Mounting stand

Abstract

To provide a stand capable of stabilizing the posture of use. [Solution] The mount 30 of the present disclosure is installed on a structure 10 and is switchable between a first position and a second position, and has a portion that is in an upright position in the first position and in an approximately horizontal position in the second position.

Description

[Technical Field]

[0001] The present disclosure relates to a cradle. [Background technology]

[0002] Permanent scaffolding is sometimes installed to facilitate periodic inspections of bridge structures. Patent Document 1 discloses a structure in which protective panels for protecting the bridge structure are used as scaffolding to make it easier to inspect the lower part of the bridge structure, and side panels can be tilted (deployed) to make it easier to access the sides of the bridge structure. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-87927 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the protective panel described in Patent Document 1, the basket is raised by a wire when switching from the stored state to the use state. Therefore, if an external force acts on the standing part after the basket is raised, depending on the direction of the external force, the tension in the wire will be lost, the supporting force of the wire will be lost, and the supporting state of the standing part will become unstable.

[0005] The present disclosure has been made in consideration of the above-mentioned circumstances, and aims to provide a stand that can stabilize the usage posture. [Means for solving the problem]

[0006] In order to solve the above problems, the present disclosure proposes the following means. The mount according to the present disclosure is a mount that is installed on a structure and is switchable between a first position and a second position, and has a portion that is an upright position in the first position and an approximately horizontal position in the second position. [Effects of the Invention]

[0007] According to the present disclosure, it is possible to provide a stand that can stabilize the usage posture. [Brief explanation of the drawings]

[0008] [Figure 1] 10 is an example in which a worker inspects a structure using a structure inspection platform according to the present disclosure. [Figure 2] FIG. 10 is a diagram showing the storage position of the structure inspection rack. [Figure 3] FIG. 1 is a first diagram showing the structure inspection platform in the process of being switched from the storage position to the usage position. [Figure 4] FIG. 2 is a second diagram showing the structure inspection platform in the process of switching from the storage position to the usage position. [Figure 5] FIG. 3 is a third diagram showing the structure inspection platform in the process of being switched from the storage position to the usage position. [Figure 6] FIG. 4 is a fourth diagram showing the structure inspection platform in the process of being switched from the storage position to the usage position. [Figure 7] FIG. 5 is a diagram showing the structure inspection platform in the process of being switched from the storage position to the usage position. [Figure 8] FIG. 10 is a diagram showing the state in which the structure inspection platform has completed deployment and is in the usage position. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a structure inspection rack according to one embodiment of the present disclosure will be described with reference to the drawings. The structure inspection rack is attached to a structure. The structure inspection rack is used, for example, as a scaffold for workers when inspecting the structure.

[0010] (structure) As shown in Fig. 1, a structure 10 according to this embodiment is, for example, a building such as a road or a bridge. The structure 10 is preferably an elevated bridge. An elevated bridge is, for example, a bridge built at a high altitude to carry a road or the like. In this embodiment, the structure 10 will be described as being an elevated bridge. The structure 10 comprises a passage T, a wall parapet F, a support member M, and a beam member S. In the following, as shown in Figure 1, the direction from vertically above to below the structure 10 is referred to as the first direction D1, the direction from the side facing the worker O to the side facing the passage T based on the wall parapet F is referred to as the second direction D2 (perpendicular to the bridge axis), and the direction perpendicular to both the first direction D1 and the second direction D2, which is the direction of travel of vehicles or pedestrians passing through the passage T, is referred to as the third direction D3 (bridge axis direction).

[0011] The passage area T is a portion where vehicles and pedestrians pass. In this embodiment, the lower part of the structure 10 particularly means the lower surface of the passage area T. The wall parapet F is provided on the side of the passageway T of the structure 10. This prevents vehicles and pedestrians passing through the passageway T from falling. In this embodiment, the side of the structure 10 particularly refers to the outer surface of the wall parapet F, i.e., the surface facing the worker O shown in FIG. 1 .

[0012] The support member M is provided at the bottom of the structure 10. The support member M has a horizontal support member M1 and a vertical support member M2. The horizontal support member M1 is installed horizontally at the bottom of the structure 10. One end of the horizontal support member M1 is attached to the girder member S of the structure 10, and the other end is attached to the vertical support member M2. Vertical supports M2 are positioned vertically below the structure 10 by horizontal supports M1. A support member 70 is attached to the vertical support member M2. The support member 70 connects the vertical support member M2 to a side panel 22, which will be described later. The support member 70 is attached to the vertical support member M2 and the side panel 22 by a fastener 75. The fastener 75 may be, for example, a bolt or a rivet.

[0013] (protective panel) 2, the structure 10 includes a protective panel 20. The protective panel 20 is provided to protect the lower part of the structure 10 from a corrosive environment and the like. The protective panels 20 may be provided to correspond to the length of the structure 10 in the third direction D3. There may be one or more protective panels 20 for the structure 10. When multiple protective panels 20 are provided, rubber or joint material may be provided between the protective panels 20 in the third direction D3. This makes it possible to seal gaps between the protective panels 20 in the third direction D3, and protect the structure 10 from corrosion even in environments prone to corrosion, such as along the sea.

[0014] As shown in FIG. 1 , the protective panel 20 includes a lower panel 21 and side panels 22. The lower panel 21 is disposed along the lower part of the structure 10 at the lower end of the vertical support member M2. One end of the lower panel 21 in the second direction D2 is attached to the girder S, and the other end is attached to the lower end of the vertical support member M2. The lower panel 21 is, for example, a rectangular or square flat plate, and is disposed so that each side is parallel to either the second direction D2 or the third direction D3. When a worker O moves inside the protective panel 20, he or she moves by walking on the lower panel 21. As shown in Fig. 1, the side panel 22 is a flat plate having, for example, a rectangular or square shape. In the storage position shown in Fig. 2, two sides of the side panel 22 are arranged parallel to the third direction D3, and the other sides are arranged parallel to a plane formed by the first direction D1 and the second direction D2. Details of the side panel 22 will be described later.

[0015] (Structural inspection stand) Next, the structure inspection platform 30 will be described. When no work is being performed by the worker O, the structure inspection platform 30 according to this embodiment is arranged in an upright position outside the second direction D2 of the structure 10, as shown in Fig. 2. Hereinafter, the state in which the structure inspection platform 30 is upright outside the second direction D2 of the structure 10 will be referred to as the stored position. When inspecting the structure 10, the worker O can pull out the structure inspection platform 30 from the structure 10 and use the structure inspection platform 30 as a foothold, as shown in Fig. 1. Hereinafter, the state in which the structure inspection platform 30 is pulled out from the structure 10 is referred to as the usage position. The structure inspection platform 30 can be freely switched between a storage position as shown in Fig. 2 and a use position as shown in Fig. 1. When no work is being performed by the worker O, the structure inspection platform 30 is in the storage position, and when work by the worker O is required, for example, during inspection, the structure inspection platform 30 is in the use position.

[0016] As shown in FIG. 1, the structure inspection platform 30 includes a first section 31, a second section 35, a bent link 50, an upper fence body 40, an operating link member 55, and a load support portion 60.

[0017] (Part 1) The first portion 31 is, for example, a rectangular or square flat plate. As shown in Fig. 2, in the stored posture, the first portion 31 has a side that is perpendicular to the side that is parallel to the third direction D3 and that is parallel to the first direction D1. In other words, in the stored posture, the first portion 31 is arranged in an upright state outside the second direction D2 of the structure 10 with respect to the support material M. As shown in FIG. 2, the lower end of the first portion 31 in the storage position is referred to as a first end 31a, and the upper end of the first portion 31 in the storage position is referred to as a second end 31b.

[0018] As shown in FIG. 1 , the first portion 31 is supported on the structure 10 via a first connecting portion 32. The first connecting portion 32 is a member that connects the structure 10 and the first portion 31. The first connecting portion 32 is provided on the side of the vertical support member M2 opposite the girder member S. Specifically, a first end portion 31 a of the first portion 31 is attached to the first connecting portion 32. The first connecting portion 32 includes a first shaft 33. The first shaft 33 connects the structure 10 and the first portion 31 so as to be able to swing freely relative to the structure 10. The first shaft 33 extends in a third direction D3. The first portion 31 is attached to the first shaft 33 so as to be able to swing freely around the horizontal axis thereof.

[0019] As shown in FIG. 1, the first portion 31 is in a substantially horizontal position in the usage position. This allows a worker O to stand on the first portion 31 and inspect the structure 10. At this time, the first end 31a of the first portion 31 is located on the support material M side in the second direction D2, and the second end 31b is located on the opposite side of the support material M in the second direction D2. Here, the substantially horizontal position may include, for example, not only a completely horizontal position, but also a position inclined to an extent that does not cause any problems for work. Furthermore, the substantially horizontal position may also include a position inclined slightly (for example, within 5 degrees) in the second direction D2 or the third direction D3.

[0020] (Second part) The second portion 35 is, for example, a rectangular or square flat plate. As shown in Fig. 2, in the stored posture, the second portion 35 has a side that is perpendicular to the side that is parallel to the third direction D3 and that is parallel to the first direction D1. In other words, in the stored posture, the second portion 35 is arranged in an upright state outside the second direction D2 of the structure 10 with respect to the support material M. As shown in FIG. 2, the lower end of the second portion 35 in the storage position is referred to as a first end 35a, and the upper end of the second portion 35 in the storage position is referred to as a second end 35b.

[0021] 1, the second portion 35 is connected to the first portion 31. Specifically, a first end portion 35a of the second portion 35 is attached to a second end portion 31b of the first portion 31. Here, the connecting portion between the first portion 31 and the second portion 35 is referred to as a second connecting portion 36. The second connecting portion 36 includes a second shaft 37. The second shaft 37 connects the first portion 31 and the second portion 35 together so as to be pivotable relative to the first portion 31. The second shaft 37 extends in a third direction D3. The second portion 35 is attached to the second shaft 37 so as to be pivotable about a horizontal axis.

[0022] As shown in Fig. 1, the second section 35 is in an upright position when in use. Here, the upright position may include, for example, not only a position parallel to a direction completely perpendicular to the first section 31, but also a position slightly inclined (for example, within 5 degrees) from a direction completely perpendicular to the first section 31. This allows the second section 35 to function as a back basket 45 that supports the worker O from the back side. Note that, in this case, the second section 35 extends upward from the second end 31b of the first section 31.

[0023] Here, the side panel 22 will be described in detail. As shown in Fig. 1 and Fig. 2, the side panel 22 includes a first side panel 22a and a second side panel 22b that are attached to the structure inspection platform 30, and a third side panel 22c that is attached to the structure 10. The third side panel 22c is positioned lower than the first side panel 22a and the second side panel 22b. The first side panel 22a, the second side panel 22b, and the third side panel 22c may have the same plate thickness in the second direction D2. As shown in Fig. 1, the structure inspection platform 30 is provided so as to cover the opening 11 formed by the third side panel 22c and the structure 10. As shown in Fig. 2, the structure inspection platform 30 is installed outside the vertical support member M2 in the second direction D2 and below the passage T and wall parapet F. A plurality of structure inspection platforms 30 may be provided in series in the third direction D3 to correspond to the length of the structure 10 in the third direction D3.

[0024] 2, the first side panel 22a is attached to the outside of the first portion 31. The second side panel 22b is attached to the outside of the second portion 35. The third side panel 22c is attached to the structure 10 below the structure inspection platform 30, but is not attached to the structure inspection platform 30. 2, the first side panel 22a, the second side panel 22b, and the third side panel 22c are preferably arranged vertically in the first direction D1 as viewed from the third direction D3, so that the first side panel 22a, the second side panel 22b, and the third side panel 22c can integrally cover the structure 10, eliminating any gaps between the panels in the first direction D1.

[0025] The third side panel 22c may include a protective cap 23. The protective cap 23 is attached to the upper end of the third side panel 22c. The protective cap 23 is provided on the third side panel 22c so as to be able to move up and down. The protective cap 23 can close the gap formed between the second side panel 22b and the third side panel 22c.

[0026] (flexible link) As shown in FIG. 1 , the flex link 50 connects the structure 10 and the second portion 35. The flex link 50 is connected to the structure 10 via a first link shaft 51 and to the second portion 35 via a second link shaft 52. The first link shaft 51 and the second link shaft 52 extend in the third direction D3. The flex link 50 is rotatable around the first link shaft 51 and the second link shaft 52. The flex link 50 includes two link members 58 and a connecting shaft 53 that connects these two link members. The connecting shaft 53 extends in the third direction D3 and is disposed at the center of the flex link 50. In other words, the flex link 50 has a bending point 59 (node) at its center. Note that the bending point 59 does not have to be located at the center.

[0027] In the usage position, the bend link 50 is provided at an angle so that it moves away from the structure 10 from top to bottom. As shown in FIG. 1, the bend link 50 has a substantially linear shape in the usage position. In the usage position shown in FIG. 1, the bend link 50 can bend so as to be convex toward the vertical support member M2. As a result, in the storage position shown in FIG. 2, the bend link 50 is arranged in a bent state at a bending point 59.

[0028] (Upper fence) 1, the upper fence 40 may be, for example, a rectangular or square flat plate. The upper fence 40 may be formed, for example, by combining a rod-shaped member parallel to the third direction D3 with a rod-shaped member parallel to the first direction D1. A handle 43 for adjusting the position of the upper fence 40 may be provided on the upper fence 40. As shown in FIG. 1, the lower end of the upper fence 40 in the usage position is referred to as a first end 40a, and the upper end is referred to as a second end 40b.

[0029] As shown in FIG. 1 , the upper fence body 40 is connected to the second section 35 via a third connecting part 41. The third connecting part 41 is a member that connects the upper fence body 40 and the second section 35. The third connecting part 41 is provided at the second end part 35b of the second section 35. Specifically, the first end part 40a of the upper fence body 40 is attached to the third connecting part 41. The third connecting portion 41 includes a third shaft 42. The third shaft 42 connects the second portion 35 and the upper fence 40 so that the upper fence 40 can swing freely relative to the second portion 35. The upper fence 40 is attached to the third shaft 42 so that it can swing freely around the horizontal axis.

[0030] 2, the upper fence body 40 is positioned closer to the girder S than the first portion 31 and the second portion 35 in the second direction D2. In this case, the upper fence body 40 is disposed in a position that extends across and follows the first portion 31 and the second portion 35 in the second direction D2. As shown in FIG. 1 , the upper fence 40 in the use position is arranged to extend above the second end 35b of the second portion 35. The length of the side of the upper fence 40 parallel to the first direction D1 is preferably long enough to support the worker O from the back. This allows the upper fence 40, together with the second portion 35, to serve as a back basket 45 that supports the worker O from the back. In this embodiment, the back basket 45 includes the second portion 35 and the upper fence 40. However, the back basket 45 does not necessarily have to include the upper fence 40.

[0031] (Operation link member) As shown in Fig. 1, the structure inspection platform 30 includes an operating link member 55. The operating link member 55 is connected to the first section 31 via a third link shaft 56, and is connected to the upper fence body 40 via a fourth link shaft 57. The third link shaft 56 and the fourth link shaft 57 extend in the third direction D3. The operating link member 55 is rotatable around the third link shaft 56 and the fourth link shaft 57.

[0032] 1, the operating link member 55 is provided at an angle so as to move away from the vertical support member M2 as it goes from bottom to top in the usage posture. Note that, unlike the bent link 50, the operating link member 55 does not have a bending point 59. As shown in FIG. 2, in the stored position, the operating link member 55 is disposed along the first portion 31 and the second portion 35.

[0033] As shown in FIG. 1 , in the structure inspection platform 30 according to this embodiment, the first portion 31 is closer to the viewer in the third direction D3 than the second portion 35. Therefore, the bent link 50 is attached so that it is located at the rear in the third direction D3, and the operating link member 55 is attached so that it is located at the front in the third direction D3. This prevents interference between the bent link 50 and the operating link member 55. However, the positional relationship between the operating link member 55 and the bent link 50 is not limited to this. For example, when the second portion 35 is closer to the viewer in the third direction D3 than the first portion 31, the bent link 50 may be attached so that the operating link member 55 is located at the rear in the third direction D3, and the bent link 50 is attached so that it is located at the front in the third direction D3.

[0034] (load support part) The load support portion 60 supports part of the load of the first portion 31 and the second portion 35 during switching from the storage position to the usage position. As shown in FIG. 1 , the load support portion 60 includes a cord-like body 61 and a sliding body 62.

[0035] As shown in Fig. 1, the cord-like member 61 is a string-like member. The cord-like member 61 is, for example, a wire. One end of the cord-like member 61 is connected to the second end 31b of the first portion 31, and the other end is connected to the sliding member 62. The cord-like member 61 passes through a fulcrum 63 provided on the side surface of the vertical support member M2 on the third direction D3 side. The fulcrum 63 is located above the second end 31b of the first portion 31, regardless of whether the device is in the stored position or the usage position.

[0036] As shown in FIG. 1 , the sliding body 62 is connected to the cord-like body 61 and is provided inside the structure 10 so as to be slidable with sliding resistance. The inside of the structure 10 is, for example, the space between the vertical support member M2 and the girder member S when viewed from the third direction D3. The sliding body 62 according to this embodiment is provided on the surface of the vertical support member M2 facing the girder member S. The sliding body 62 (the other end of the cord-like body 61) is located on the opposite side of one end of the cord-like body 61 across the fulcrum 63 in the second direction D2. The sliding body 62 is located below the fulcrum 63 regardless of whether the sliding body 62 is in the stored position or the usage position. The sliding body 62 slides on the vertical support member M2. The sliding body 62 is a so-called counterweight. The sliding body 62 may be, for example, an L-shaped angle.

[0037] When the structure inspection platform 30 switches from the storage position to the use position, the cord-like member 61 and the sliding member 62 move together with the first part 31. At this time, the sliding member 62 moves linearly along the side surface of the vertical support member M2 on the second direction D2 side toward the passage section T in the first direction D1. The sliding body 62 may move linearly along a guide provided on the vertical support member M2. The cord-like body 61 may be provided with a winding mechanism and an unwinding mechanism. The cord-like body 61 may be, for example, a tape measure or a convex.

[0038] 1, the vertical support member M2 includes a first stopper 65 and a second stopper 66. The first stopper 65 and the second stopper 66 are attached to the vertical support member M2 with a gap between them in the first direction D1. In the illustrated example, the first stopper 65 is attached above the second stopper 66. When the structure inspection platform 30 is switched from the storage position to the use position, the movement of the sliding body 62 in the first direction D1 can be limited by the first stopper 65. In the illustrated example, the first stopper 65 is a protrusion provided on the vertical support member M2. The first stopper 65 comes into contact with the sliding body 62 at the uppermost position of the sliding body 62, thereby restricting further upward movement of the sliding body 62. 1, the movement of the sliding body 62 is restricted by the first stopper 65, and the position of the sliding body 62 is fixed. In the usage posture shown in FIG. 1, one end of the cord-like body 61 is connected to the first portion 31, and the other end of the cord-like body 61 is fixed to the sliding body 62, so that the cord-like body 61 and the sliding body 62 can suspend and support the first portion 31. The second stopper 66 can anchor the sliding body 62 in the storage position shown in FIG.

[0039] The load support unit 60 does not have to include the cord-like body 61 and the sliding body 62. In this case, the load support unit 60 may be, for example, an oil damper or a gas damper. For example, by attaching an oil damper or a gas damper to the fulcrum 63, the structure inspection platform 30 can be smoothly placed in the usage position. The attachment location of the oil damper or the gas damper is not limited to this.

[0040] (Switching to the usage position) Next, switching between the storage position and the usage position of the structure inspection platform 30 will be described with reference to Figures 2 to 8. When switching the structure inspection platform 30 from the storage position to the usage position, the worker O is standing on the bottom panel 21 shown in Figure 1. 3, when the first portion 31 and the second portion 35 are tilted together, the angle formed by the vertical support member M2 and the first and second portions 31 and 35 is defined as an opening degree A1. The angle formed by the first portion 31 and the second portion 35 is defined as an opening degree A2. The angle formed by the upper fence body 40 and the second portion 35 is defined as an opening degree A3.

[0041] As shown in Fig. 2, the structure inspection platform 30 in the stored position is arranged parallel to the first direction D1 with the first section 31 and the second section 35 standing upright along the vertical support member M2. In the stored position shown in Fig. 2, the opening degree A1 (see Fig. 3) is 0 degrees, the opening degree A2 is 180 degrees, and the opening degree A3 (see Fig. 3) is 0 degrees. First, the worker O lowers the protective cap 23 shown in FIG. 2 downward. This ensures a space between the second side panel 22b and the third side panel 22c for deploying the structure inspection platform 30, as shown in FIG. 3. Next, as shown in FIGS. 3 and 4, the worker O starts from the first axis 33 and tilts the first section 31 and the second section 35 together. As a result, the opening angle A1 gradually increases. At this time, the bent link 50 remains bent at the bending point 59. At this time, the worker O may also use the weight of the first section 31 and the second section 35 to tilt the first section 31 and the second section 35 together. The worker O tilts the first portion 31 and the second portion 35 until the opening angle A1, which was 0 degrees, reaches an opening angle A1' (greater than 0 degrees and less than 90 degrees) shown in Fig. 5. When the opening angle A1 reaches the opening angle A1', the bent link 50 becomes substantially linear.

[0042] As shown in FIG. 6, after the bent link 50 assumes a substantially straight shape, the worker O further tilts the first section 31. At this time, the first section 31 is tilted until it assumes a substantially horizontal position. Accordingly, as shown in FIG. 7, the operating link member 55 raises the upper fence 40. At this time, the bent link 50 raises the second section 35, and as shown in FIG. 8, the opening angle A2, which was 180 degrees, reaches an opening angle A2' (90 degrees). The bent link 50 and the upper fence 40 function as a link mechanism that changes the position of the second section 35 in accordance with the change in position of the first section 31. As a result, the first section 31 assumes a substantially horizontal position, and the second section 35 assumes an upright position.

[0043] 8, the rotation of the first portion 31 is restricted by catching the lower end of the first side panel 22a on the first connecting portion 32 side of the first portion 31 on the first connecting portion 32 side. This prevents the first portion 31 from tipping over more than necessary, and allows the first portion 31 to be maintained in a substantially horizontal position. 8, the rotation of the second part 35 is restricted by catching the first end 35a of the second part 35 on the second end 31b of the first part 31. For example, the second part 35 may catch on the first part 31 from above in the usage posture. This may restrict the rotation of the second part 35 by the first part 31 when the second part 35 is raised. This prevents the second part 35 from being raised more than necessary, and prevents the opening degree A2 from becoming equal to or smaller than the opening degree A2'.

[0044] As the relative position of the first section 31 and the second section 35 changes, the upper fence 40 is automatically raised by the operating link member 55. As a result, when the opening angle A3, which was 0 degrees, reaches an opening angle A3' (180 degrees), the deployment of the upper fence 40 ends. Note that the first end 40a of the upper fence 40 is caught on the second end 35b of the second section 35. As a result, when the second section 35 assumes the use position, the rotation of the upper fence 40 is restricted, preventing the opening angle A3 from exceeding the opening angle A3'.

[0045] 2 to 8, as the first portion 31 changes from an upright position to a substantially horizontal position, the cord-like member 61 connected to the first portion 31 moves the sliding member 62. Specifically, the sliding member 62 slides upward along the vertical support member M2. When the first portion 31 assumes a substantially horizontal position, the movement of the sliding member 62 is restricted by the first stopper 65. As a result of the above, the structure inspection platform 30 is in the usage position.

[0046] (Switching to storage position) After inspecting the structure 10 using the structure inspection platform 30 in the usage position, the worker O returns the structure inspection platform 30 to the storage position. For example, the worker O pulls the handle 43 provided on the upper fence 40 to lower the upper fence 40 as shown in FIG. 7. As a result, the bent link 50 and the operating link member 55 change the position of the first section 31 and the second section 35 so that the first section 31 and the second section 35 are aligned in a straight line as shown in FIG. 5. The opening degree A1 at this time is opening degree A1', and the upper fence 40 is lowered so as to fit over the first section 31 and the second section 35 that are aligned in a straight line. Next, as shown in FIG. 4, the worker O pushes the bending point 59 of the bent link 50 toward the vertical support member M2. This causes the bent link 50 to bend so that it is convex toward the vertical support member M2. As shown in FIG. 3, in this state, the worker O raises the upper fence body 40 and the first and second portions 31 and 35 together. At this time, the worker O may also raise the first and second portions 31 and 35 together using the weight of the first and second portions 31 and 35. As a result of the above, the structure inspection platform 30 is in the stored position shown in FIG.

[0047] (Effects of this embodiment) As described above, according to the structure inspection rack 30 of this embodiment, the first end 31a of the first section 31 is supported by the structure 10 so as to be swingable about the horizontal axis. The first end 35a of the second section 35 is connected to the second end 31b of the first section 31 so as to be swingable about the horizontal axis. Since the structure inspection platform 30 has this configuration, for example, when the structure inspection platform 30 is in the stored position, the worker O can easily set it to the usage position by tilting the first part 31 and the second part 35 together starting from the first end 31a of the first part 31, and then raising the second part 35 starting from the first end 35a of the second part 35 (the second end 31b of the first part 31). When the structure inspection platform 30 is in the usage position, the second part 35 can be tilted starting from the first end 35a of the second part 35, and the first part 31 and the second part 35 can be raised together starting from the first end 31a of the first part 31, thereby easily putting the platform into the storage position.

[0048] The second section 35 is connected to the structure 10 by a bent link 50. In the usage position, the bent link 50 has a substantially linear shape, so that the first section 31 is held in a substantially horizontal position and the second section 35 is held in an upright position. Therefore, in the usage position, the second section 35 is supported on the structure 10 by the substantially linear bent link 50. This makes it possible to stabilize the usage position compared to when the second section 35 is supported by a wire or the like, and enables the structure inspection platform 30 to be configured so that work can be performed in a stable state, for example.

[0049] The structure inspection platform 30 is provided with a load support section 60. This allows the load support section 60 to support part of the load of the first section 31 and the second section 35 while the structure inspection platform 30 is switching from the storage position to the usage position. Therefore, for example, the worker O can more smoothly switch the structure inspection platform 30 between the usage position and the storage position.

[0050] The load support part 60 includes a cord-like body 61 and a sliding body 62, and one end of the cord-like body 61 is connected to the first part 31. As a result, when the structure inspection platform 30 switches from the storage position to the use position, the cord-like body 61 moves together with the first part 31. The other end of the cord-like body 61 is connected to the sliding body 62. The sliding body 62 is provided so as to be able to slide freely with sliding resistance inside the structure 10. As a result, as the cord-like body 61 moves together with the first part 31, the sliding body 62 slides inside the structure 10. In this way, the cord-like body 61 and the sliding body 62 move in conjunction with each other, so that, for example, the structure inspection platform 30 can be smoothly switched from a storage position to a usage position.

[0051] The structure inspection platform 30 includes an upper fence 40 that, in the usage position, extends above the second end 35b of the second portion 35. This allows the upper fence 40 to support the worker O from the back, for example.

[0052] The lower end of the upper fence body 40 is connected to the second section 35 so as to be swingable about the horizontal axis. As a result, in the process of switching from the storage position to the use position, the upper fence body 40 swings and is raised about the horizontal axis from the first end section 40a of the upper fence body 40 connected to the second section 35 as a starting point. Additionally, the structure inspection stand 30 is provided with a linear operating link member 55 that connects the upper fence 40 and the first section 31. This allows, for example, the upper fence 40 to be supported by the first section 31 via the operating link member 55. Therefore, the structure inspection stand 30 can be configured to stably support the upper fence 40. Furthermore, the position of the upper fence 40 is controlled by the operating link member 55 in accordance with the change in the relative position between the first section 31 and the second section 35 when switching between the storage position and the usage position. Therefore, by changing the relative position between the first section 31 and the second section 35 when switching between the storage position and the usage position, the upper fence 40 can be raised by the operating link member 55 without having to raise the upper fence 40 individually. Therefore, by providing the structure inspection platform 30 with the operating link member 55, switching between the usage position and the storage position can be easily performed.

[0053] In the stored position, upper fence 40 is disposed in a position that vertically extends over and follows first section 31 and second section 35. This allows upper fence 40 to be large in the vertical direction, while reducing the capacity of upper fence 40, first section 31, and second section 35 when stored in the stored position.

[0054] The structure 10 may be a viaduct. By installing the structure inspection platform 30 on the viaduct, the structure inspection platform 30 can be used to inspect, for example, soundproof walls, guardrails, and the like installed on the viaduct.

[0055] The technical scope of the present disclosure is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present disclosure.

[0056] For example, the structure inspection platform 30 may not have the flexible link 50. In this case, for example, the second section 35 may be connected to the upper fence body 40 and the first section 31. For example, the second section 35 may be switchable between a use position and a storage position by being manipulated by an operator. For example, the structure inspection platform 30 does not have to include the operating link member 55. In this case, for example, the upper fence body 40 may be connected to the second section 35. For example, the structure inspection platform 30 may not have the bent link 50 and the operating link member 55. In this case, for example, the load of the first section 31 and the second section 35 may be supported by the load support section 60. For example, an operator may be able to switch between the use position and the storage position by operating the position of each of the first section 31, the second section 35, and the upper fence body 40. For example, the structure inspection platform 30 does not need to be equipped with the load support portion 60. For example, the structure inspection platform 30 does not need to be equipped with the upper fence body 40. For example, the upper fence 40 does not have to be disposed in a range spanning the first portion 31 and the second portion 35 and in a position along these portions in the stored position. The upper fence 40 may overlap a portion of the first portion 31 and the second portion 35 in the storage position, or may be arranged so as not to overlap the first portion 31 and the second portion 35. For example, the structure 10 does not have to be an elevated bridge, but may be a road or other type of bridge.

[0057] In addition, within the scope of the present disclosure, the components in the above-described embodiments may be replaced with well-known components as appropriate, and the above-described modified examples may be combined as appropriate.

[0058] (Addendum) The embodiment can be understood, for example, as follows.

[0059] <1> A structure inspection stand according to one embodiment of the present disclosure is a structure inspection stand that is installed inside a structure so as to cover an opening formed in the structure and form part of the outer wall of the structure, and is switchable between a usage position in which it is pulled out to the outside of the structure and a storage position in which it is stored inside the structure, and has a first part and a second part that are adjacent to each other above and below in the storage position, and the lower end of the first part in the storage position is supported by the structure so as to be swingable about a horizontal axis, and the lower end of the second part in the storage position is connected to the upper end of the first part so as to be swingable about a horizontal axis and is connected to the structure, and in the usage position, the first part is held in an approximately horizontal position, and the second part is held in an upright position.

[0060] The first section has a lower end supported by the structure in the stowed position so as to be swingable about a horizontal axis, whereby, in the stowed position, the first section swings about the horizontal axis from the lower end supported by the structure as a starting point. The second section has a lower end connected to the upper end of the first section in the stored position so as to be swingable about a horizontal axis, so that in the stored position, the second section swings about the horizontal axis from its lower end connected to the upper end of the first section. By providing the structure inspection stand with this configuration, for example, an operator can easily place the structure inspection stand in the storage position by tilting the first and second parts together starting from the lower end of the first part, and then raising the second part starting from the lower end of the second part (the upper end of the first part) to place the stand in the usage position. When the structure inspection stand is in the usage position, it can be easily placed in the storage position by tilting the second part starting from the lower end of the second part and raising the first part and the second part together starting from the lower end of the first part. The second section is connected to the structure. For example, the second section may be connected to the structure by a bent link. In this case, in the usage position, the bent link assumes a linear shape, so that the first section is held in a substantially horizontal position and the second section is held in an upright position. Therefore, in the usage position, the second section is supported on the structure by the linear bent link. This makes it possible to stabilize the usage position compared to when the second section is supported by a wire or the like, and can provide, for example, a structure inspection stand that allows work to be performed in a stable state.

[0061] <2> the above <1> The structure inspection platform according to the above aspect may be provided with a load support portion that supports a part of the load of the first portion and the second portion during switching from the storage position to the use position.

[0062] The structure inspection platform is provided with a load support portion. This allows the load support portion to support part of the load of the first and second portions while the structure inspection platform is switching from the storage position to the usage position. This allows, for example, a worker to more smoothly switch the structure inspection platform between the usage position and the storage position.

[0063] <3> the above <2> In the structure inspection platform according to the above, the load support part may include a cord-like body and a sliding body, one end of the cord-like body being connected to the first part and the other end being connected to the sliding body, and the sliding body being provided so as to be able to slide freely inside the structure with sliding resistance.

[0064] The load support unit includes a rope and a slider, and one end of the rope is connected to the first portion, so that when the structure inspection platform switches from the storage position to the use position, the rope moves together with the first portion. The other end of the cord-like body is connected to the sliding body. The sliding body is provided so as to be able to slide freely inside the structure with sliding resistance. As a result, as the cord-like body moves together with the first part, the sliding body slides inside the structure. In this way, the cord-like body and the sliding body move in unison, for example, the structure inspection platform can be smoothly switched from a storage position to a usage position.

[0065] <4> the above <1> from <3> The structure inspection platform according to any one of the above embodiments includes an upper fence body that extends above the upper end of the second part in the usage position, the upper fence body being connected to the second part so as to be able to swing freely around a horizontal axis set at the lower end in the usage position, and a linear operating link member connecting the upper fence body to the first part is provided, and the position of the upper fence body may be operated by the operating link member in accordance with a change in the relative position of the first part and the second part when switching between the storage position and the usage position.

[0066] The structure inspection platform includes an upper fence that extends above the upper end of the second portion when in the usage position, allowing the upper fence to support the back of an operator, for example. The lower end of the upper fence is connected to the second section so as to be swingable about the horizontal axis, so that when the upper fence is switched from the storage position to the use position, the lower end connected to the second section swings and is raised about the horizontal axis. The structure inspection rack is provided with a linear operating link member that connects the upper fence and the first section. This allows, for example, the upper fence to be supported by the first section via the operating link member. This allows for a structure inspection rack that can stably support the upper fence. Furthermore, the upper fence is operated by the operating link member in accordance with the change in the relative position between the first and second parts when switching between the storage position and the usage position. Therefore, by changing the relative position between the first and second parts when switching between the storage position and the usage position, the upper fence can be raised by the operating link member without having to raise the upper fence individually. Therefore, by providing the operating link member to the structure inspection platform, switching between the usage position and the storage position can be easily performed.

[0067] <5> the above <4> In the structure inspection platform according to the above, the upper fence body may be arranged in the stored position so as to extend over and follow the first and second portions in the vertical direction.

[0068] In the stored position, the upper fence is disposed in a position that extends vertically across and follows the first and second sections, thereby allowing the upper fence to be large in the vertical direction while reducing the volume of the upper fence, first section, and second section when stored.

[0069] <6> the above <1> from <5> In the structure inspection rack according to any one of the above aspects, the structure may be an elevated bridge.

[0070] The structure is a viaduct. By installing a structure inspection platform on the viaduct, the structure inspection platform can be used to inspect, for example, soundproof walls and guardrails installed on the viaduct. [Explanation of symbols]

[0071] 10 Structures 11 Aperture 30 Structural inspection stand 31 Part 1 31a: First end (lower end) of first portion 31b Second end (upper end) of first portion 35 Part 2 35a: First end (lower end) of second portion 35b Second end (upper end) of second portion 40 Upper fence body 50 flex links 55 Operation link member 60 Load support section 61 Funicular body 62 Sliding body

Claims

1. A platform that is installed on a structure and is switchable between a first posture and a second posture, A first part; and a second portion disposed on the first portion in both the first and second positions and connected to the structure; In the second position, the first portion is in a substantially horizontal position; In the first position, the first portion and the second portion are in an upright position; Before switching from the first posture to the second posture, The cradle, wherein the first portion and the second portion both undergo a first transition stage from an upright position to approach a substantially horizontal position.

2. A platform that is installed on a structure and is switchable between a first posture and a second posture, A first part; and a second portion disposed on the first portion in both the first and second positions and connected to the structure; In the second position, the first portion is in a substantially horizontal position; In the first position, the first portion and the second portion are in an upright position; Further provided with an upper fence, The upper fence body is In the first position, both the first portion and the second portion are in an upright position, In the second position, the pedestal is positioned in an upright position above the second portion.

3. A platform that is installed on a structure and is switchable between a first posture and a second posture, A first part; and a second portion disposed on the first portion in both the first and second positions and connected to the structure; In the second position, the first portion is in a substantially horizontal position; In the first position, the first portion and the second portion are in an upright position; a load support portion that supports a part of the load of the first portion and the second portion when the actuator is shifted from the first position to the second position; The load support portion includes a cord-like body and a sliding body, One end of the cord is connected to the first portion, The other end of the cord-like body is connected to the sliding body, The sliding body is provided slidably with sliding resistance.

4. Before switching from the first posture to the second posture, the second portion undergoes a second transition stage in which it transitions to a standing position; The mount according to claim 1 .

5. Further comprising a first link member; one end of the first link member is connected to the structure side of the first portion in the second posture, The other end of the first link member is connected to a portion other than the lower end of the upper fence body in the second posture. The mount according to claim 2.

6. Further comprising a second link member; one end of the second link member is connected to the second portion in the second position, the other end of the second link member is connected to the structure so as to cross the first link member in the second position; The mount according to claim 5.

7. the second link member is a bendable member having a break point; The mount according to claim 6.

8. In the first position, both the first portion and the second portion can maintain an upright position, In the second position, the first portion can maintain a substantially horizontal position. The mount according to any one of claims 1 to 7.

9. The mounting system according to any one of claims 1 to 7, wherein the structure is a bridge.

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