Temporary scaffolding unit

Abstract

To provide a temporary scaffolding unit that makes it easier for operators to work and can be applied to vertical wall surfaces.SOLUTION: A temporary scaffolding unit (1) is temporarily installed in an interior space of facility (SH) through an opening (MH) provided in a wall of the facility (SH). The temporary scaffolding unit comprises a scaffolding body (11) that is configured to extend horizontally from an inner wall surface (W1) of the wall provided with the opening toward the interior space, and an arm member (12) that is connected to the scaffolding body and is configured to be attachable to the opening. The scaffolding body comprises first attachment members (112, 113) that can be attached to first wire materials (L1, L2) suspended in the interior space. The arm member comprises a stopper (124) that can be arranged to face an edge of the opening.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a temporary scaffolding unit. [Background technology]

[0002] For example, in equipment with an internal space where raw materials such as coke and iron ore are charged and pass through, such as the top hopper of a blast furnace installed in a steel plant, an opening (inspection hatch) is provided for maintenance work in the internal space (for example, for inspection and cleaning of the internal space, the inner wall surfaces that form the internal space, and the members arranged on the inner wall surfaces (hereinafter referred to as the "inside")). Usually, the opening is provided in the upper or central part of the wall of the equipment where it is difficult for workers to reach.

[0003] Conventionally, when performing maintenance work inside the equipment through such an opening, a temporary scaffolding is used that is passed through the opening to the internal space. The temporary scaffolding includes, for example, a rectangular scaffolding body and an L-shaped arm member connected to one end of the longitudinal direction of the scaffolding body. The arm member includes a bent portion that bends at a right angle. One end of the arm member is erected from the scaffolding body with the bent portion as a center, and the other end of the arm member extends to the opposite side of the scaffolding body. That is, the temporary scaffolding is crank-shaped in a side view. A reinforcing diagonal member (so-called bracket) is attached between the bent portion of the arm member and the scaffolding body. A stopper longer than the horizontal (width) length of the opening is attached to the other end of the arm member.

[0004] The scaffolding is attached to the opening by inserting the scaffolding body into the internal space through the opening and hooking the other end of the arm member to the opening. The scaffolding body protrudes from the inner wall surface on the opening side into the internal space, and the stopper is disposed outside the opening. Here, as described above, the raw materials fed into the internal space pass through it. Therefore, if a member for fixing the other end (front end) of the scaffolding body is attached to the passage of the raw materials, the member may be damaged or fall off due to the collision of the raw materials. Therefore, it is difficult to attach the member to the inner wall surface that forms the internal space, and the attachment position of the member is also limited to outside the passage of the raw materials. As a result, only the arm member is fixed to the opening, and the temporary scaffolding is attached to the opening in a cantilevered state. In the temporary scaffolding configured in this way, the width of the scaffolding body is limited to the width of the opening. Therefore, the floor area of ​​the temporary scaffolding is limited, and the work space is limited. In addition, the diagonal member may limit the work of the worker and the storage space for the work members.

[0005] Techniques for installing temporary scaffolding in the internal space of a furnace or the like have been proposed (see, for example, Patent Document 1).

[0006] The technology disclosed in Patent Document 1 relates to a technology for temporarily setting up a scaffold for maintenance work in the combustion chamber of a boiler furnace. In this technology, a worker attaches a lifting device to the combustion furnace, carries a temporary scaffolding platform into the clinker hopper through a manhole installed in the clinker hopper, lifts the platform with the lifting device, and fixes the platform to the inclined part (bottom surface) of the clinker hopper with a swivel jack. After that, the worker uses the platform to carry in and set up the temporary scaffolding.

[0007] However, this technology requires the installation of a lifting device above the temporary scaffolding for each task, and a mechanism (such as a hole or wire) for installing the lifting device is necessary. This technology also requires a large number of materials and labor hours. Furthermore, with this technology, the frame is fixed to the inclined part. Therefore, this technology cannot be applied to vertical wall surfaces that do not have an inclined part. In other words, this technology cannot be applied to anything other than certain boiler furnaces. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2019-060142 A Summary of the Invention [Problem to be solved by the invention]

[0009] An object of the present invention is to provide a temporary scaffolding unit that facilitates transportation and scaffolding construction work for workers and can be applied to vertical wall surfaces. [Means for solving the problem]

[0010] The temporary scaffolding unit of the present invention is a temporary scaffolding unit that is temporarily installed in the internal space of a facility through an opening provided in a wall of the facility, and comprises a scaffolding main body configured to extend horizontally from the inner wall surface of the wall in which the opening is provided toward the internal space, and an arm member that is connected to the scaffolding main body and configured to be attachable to the opening, wherein the scaffolding main body has a first mounting member that can be attached to a first wire suspended in the internal space, and the arm member has a stopper that can be positioned opposite the edge of the opening. Effect of the Invention

[0011] According to the present invention, a temporary scaffolding unit can be provided which facilitates transportation and scaffolding construction work for workers and can be applied to vertical wall surfaces. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is an external view showing an example of use of an embodiment of a temporary scaffolding unit according to the present invention. [Diagram 2] FIG. 2 is a perspective view of the temporary scaffolding unit of FIG. 1. [Diagram 3] 3 is a view of the temporary scaffolding unit of FIG. 1 as seen from the arrow A in FIG. 2. [Figure 4]FIG. 2 is a plan view of the temporary scaffolding provided on the temporary scaffolding unit of FIG. 1 in a deployed state. [Diagram 5] FIG. 5 is a rear view of the temporary scaffolding in a state where the deployable scaffolding of FIG. 4 is not deployed. [Figure 6] FIG. 6 is an explanatory diagram showing the state in which the temporary scaffolding in FIG. 5 has been carried to an opening. [Figure 7] 2 is an explanatory diagram showing the state immediately after the scaffolding main body and the deployable scaffolding provided in the temporary scaffolding unit of FIG. 1 have been carried into the internal space through the opening. FIG. [Figure 8] 2 is an explanatory diagram showing a state in which a second support unit provided on the temporary scaffolding unit in FIG. 1 has been removed from an opening portion. FIG. [Figure 9] 2 is an explanatory diagram showing a state in which a first support unit provided on the temporary scaffolding unit in FIG. 1 has been removed and a hanging member provided on the temporary scaffolding unit has been attached. FIG. [Figure 10] FIG. 5 is an explanatory diagram showing the temporary scaffolding in a deployed state of the deployable scaffolding of FIG. 4, viewed from above. [Figure 11] FIG. 5 is an explanatory diagram showing a state in which the temporary scaffolding of FIG. 4 is temporarily set up in the interior space of the facility. [Figure 12] FIG. 5 is an explanatory diagram showing the state in which the temporary scaffolding of FIG. 4 is temporarily installed in the interior space of the facility, as viewed from above. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The temporary scaffolding unit according to the present invention (hereinafter referred to as "this unit") will be described with reference to the following embodiments and drawings.

[0014] In the following description, the unit is used for maintenance work on the collecting chute of the top hopper of a blast furnace.

[0015] In the following description, unless otherwise specified, when the three mutually orthogonal axes shown in each drawing are the X-axis, the Y-axis, and the Z-axis, respectively, the "X-axis direction" is the direction along the X-axis, which is the left-right direction in this embodiment. The "Y-axis direction" is the direction along the Y-axis, which is the front-rear direction in this embodiment. The "Z-axis direction" is the direction along the Z-axis, which is the up-down direction in this embodiment. The "+X-axis direction" is the positive direction in the X-axis direction, which is the rightward direction in this embodiment. The "-X-axis direction" is the negative direction in the X-axis direction, which is the leftward direction in this embodiment. The "+Y-axis direction" is the positive direction in the Y-axis direction, which is the forward direction in this embodiment. The "-Y-axis direction" is the negative direction in the Y-axis direction, which is the rearward direction in this embodiment. The "+Z-axis direction" is the positive direction in the Z-axis direction, which is the upward direction in this embodiment. The "-Z-axis direction" is the negative direction in the Z-axis direction, which is the downward direction in this embodiment.

[0016] ●Temporary scaffolding unit● ● Composition of temporary scaffolding unit FIG. 1 is an external view showing an example of use of the unit according to an embodiment. The figure shows that the unit 1 is temporarily installed in a manhole MH of a collecting chute SH of a top hopper of a blast furnace. The manhole MH is an example of an opening in the present invention.

[0017] FIG. 2 is a perspective view of the unit 1. As shown in FIG. For ease of explanation, the figure also shows the manhole MH and the inner wall surfaces W1, W2 of the collecting chute SH.

[0018] FIG. 3 is a view of the unit 1 taken along the line A in FIG. For ease of explanation, the drawing also shows a cross section of the collecting chute SH. In addition, for ease of explanation, the drawing also shows by two-dot chain lines a slope SP used for conveying in the unit 1 and the opening and closing range of a valve V for feeding raw materials into the collecting chute SH.

[0019] This unit 1 is temporarily installed in the internal space of the collecting chute SH (facility) through a manhole MH (opening) provided in the wall of the collecting chute SH (facility), and provides a work scaffolding in the internal space. This unit 1 comprises a temporary scaffolding 10, a support unit 20, and a hanging unit 30.

[0020] As shown in Fig. 2 and Fig. 3, in this unit 1, the front end of the temporary scaffolding 10, which is cantilevered to the manhole MH via the arm member 12 described later, is suspended and fixed by the hanging unit 30, so that both the front and rear ends of the temporary scaffolding 10 are fixed to the internal space of the collecting chute SH. As a result, the temporary scaffolding 10 is stably fixed to the internal space of the collecting chute SH. In addition, this unit 1 does not require a reinforcing diagonal member (bracket) that was required in the conventional temporary scaffolding that is cantilevered to the opening. Therefore, the work of the worker on the temporary scaffolding 10 is not restricted, and the workability of the worker on the temporary scaffolding 10 is improved.

[0021] The "facility" is, for example, a device such as a furnace or a large boiler having an internal space where workers enter to perform maintenance work, or a building such as a warehouse. In this embodiment, the facility is a collecting chute SH of the top hopper of a blast furnace.

[0022] The "opening" is, for example, an entrance for workers, such as a manhole or a door provided in a wall of the facility. In the present invention, the opening is provided at a high position that cannot be reached by workers from the floor surface of the facility.

[0023] An "internal space" is a space provided inside a facility, for example, a space through which items such as raw materials, supplies, and transport devices are input, passed through, and stored.

[0024] The temporary scaffolding 10 is carried into the internal space and forms a scaffold for workers to work in the internal space. The temporary scaffolding 10 includes a scaffolding body 11, an arm member 12, and a deployable scaffolding 13.

[0025] The scaffolding body 11 forms a scaffold for workers to work on in the internal space. The scaffolding body 11 includes a frame member 111, two mounting members 112, 113, a temporary mounting member 114, a top plate 115, two transport wheels 116, 117 (see FIG. 4), and two auxiliary wheels 118, 119.

[0026] The frame member 111 constitutes the framework of the scaffolding body 11. The frame member 111 is a rectangular hollow frame that is elongated in the front-rear direction, and is made of a metal such as steel. The four corners of the frame member 111 protrude forward and backward to constitute four protrusions 111a, 111b, 111c, and 111d. The protrusion 111a protrudes forward from the left front end of the frame member 111. The protrusion 111b protrudes forward from the right front end of the frame member 111. The protrusion 111c protrudes backward from the left rear end of the frame member 111. The protrusion 111d protrudes backward from the right rear end of the frame member 111. The center of the front end of the frame member 111 protrudes forward to constitute the protrusion 111e.

[0027] "Rectangular" includes not only rectangles and squares, all of which have right angles, but also shapes similar to quadrilaterals (e.g., quadrilaterals with rounded corners and / or sides, polygons with multiple corners).

[0028] The mounting members 112, 113 are members to which the wires L1, L2 and the temporary wires L11, L12 described later are attached. The mounting members 112, 113 are examples of the first mounting member and the first temporary mounting member in the present invention, respectively. That is, in this embodiment, the first mounting member and the first temporary mounting member in the present invention are integrally configured. As a result, the number of parts constituting the scaffolding main body 11 is reduced. The mounting members 112, 113 are plate-shaped and long in the vertical direction, and are made of metal such as steel. The mounting member 112 is connected to the protruding portion 111a of the frame member 111 so as to protrude upward. The mounting member 113 is connected to the protruding portion 111b of the frame member 111 so as to protrude upward.

[0029] In addition, the first mounting member in the present invention does not have to be configured as a mounting member integral with the first temporary mounting member. That is, for example, the scaffolding body in the present invention may separately include a mounting member attached to the wire and a temporary mounting member attached to the temporary wire.

[0030] Furthermore, the protruding portion (corresponding to the protruding portions 111a and 111b) of the present invention may function as the first mounting member and the first temporary mounting member of the present invention. That is, for example, the protruding portion may be formed with a hole to which the first wire or the first temporary wire of the present invention can be attached.

[0031] The temporary mounting member 114 is a member to which the temporary wire L21 described later is attached. The temporary mounting member 114 is an example of a second temporary mounting member in the present invention. The temporary mounting member 114 is a vertically long, thin plate, and is made of a metal such as steel. The temporary mounting member 114 is connected to the protruding portion 111e of the frame member 111 so as to protrude above the protruding portion 111e.

[0032] The protruding portion (corresponding to the protruding portion 111e) of the present invention may function as the second temporary mounting member of the present invention. That is, for example, the protruding portion may be formed with a hole to which the second temporary wire of the present invention can be attached.

[0033] Top plate 115 is preferably lightweight to reduce the burden on workers in carrying and installing it, and is, for example, a mesh made of metal such as steel. Top plate 115 is attached to frame member 111 so as to cover the opening of frame member 111.

[0034] The top plate in the present invention is not limited to a mesh, and may be, for example, in the shape of a plate or a rack.

[0035] The transport wheels 116, 117 assist in transporting the scaffolding main body 11. The transport wheels 116, 117 are arranged side by side in the left-right direction at the front end of the frame member 111 and protrude below the frame member 111. In this way, the temporary scaffolding 10 has good transportability because it is provided with the transport wheels 116, 117. As a result, compared to conventional temporary scaffolding that does not have wheels and requires multiple people to transport, the temporary scaffolding 10 can also be transported by a single worker.

[0036] The auxiliary wheels 118, 119 assist the movement (up and down movement) of the temporary scaffolding 10 in the internal space. The auxiliary wheels 118, 119 are arranged side by side in the left and right direction at the rear end of the frame member 111 so as to protrude rearward from the frame member 111.

[0037] The arm member 12 functions as a handle for the scaffolding main body 11, and is attached to the manhole MH to fix the scaffolding main body 11 to the manhole MH. The arm member 12 is made of a metal such as steel. The arm member 12 includes two abutment members 121, 122, a first stopper 123, a second stopper 124, and two gripping members 125, 126.

[0038] The abutment members 121 and 122 abut against the inner surface of the manhole MH when the temporary scaffolding 10 is attached to the manhole MH. The abutment member 121 is an example of a first abutment member in the present invention, and the abutment member 122 is an example of a second abutment member in the present invention. The abutment members 121 and 122 are L-shaped when viewed in the left-right direction (side view). One end 121a of the abutment member 121 is connected to the protruding portion 111c of the scaffolding main body 11 so as to be swingable within an angular range of 90° between the rear and the upper side. When the one end 121a of the abutment member 121 is positioned above the scaffolding main body 11 and parallel to the vertical direction, the other end 121b of the abutment member 121 protrudes to the rear of the scaffolding main body 11. One end 122a of the abutment member 122 is connected to the protruding portion 111d of the scaffolding main body 11 so as to be swingable within an angular range of 90° between the rear and the upper side. When one end 122a of the abutment member 122 is positioned above the scaffolding main body 11 and parallel to the up-down direction, the other end 122b of the abutment member 122 protrudes rearward from the scaffolding main body 11. The abutment member 121 is disposed parallel to the abutment member 122 in the left-right direction.

[0039] The first stopper 123 functions as a stopper to prevent the temporary scaffolding 10 from falling into the internal space when the temporary scaffolding 10 is attached to the manhole MH. The first stopper 123 is an L-shaped frame that is elongated in the left-right direction. The first stopper 123 is bridged across the other ends 121b, 122b of the abutment member 121 along the left-right direction and is connected to the other ends 121b, 122b. The length of the first stopper 123 is longer than the horizontal length (opening width) of the opening (manhole MH).

[0040] The second stopper 124 functions as a stopper to prevent the temporary scaffolding 10 from falling into the internal space when the temporary scaffolding 10 is attached to the manhole MH. The second stopper 124 is an L-shaped frame that is elongated in the vertical direction. The second stopper 124 is connected to the first stopper 123 so as to protrude downward from the first stopper 123 when one ends 121a, 122a of the abutting members 121, 122 are positioned parallel to the vertical direction.

[0041] The arm member of the present invention may not include either the first stopper or the second stopper. That is, for example, the abutment member of the present invention may be integrally formed in a U-shape when viewed from above, and only the second stopper may be connected to the abutment member.

[0042] The gripping members 125, 126 are handles that are gripped by a worker when transporting and setting up the temporary scaffolding 10. The gripping member 125 is connected to the other end 121b of the abutting member 121. The gripping member 126 is connected to the other end 122b of the abutting member 122.

[0043] The arm member 12 configured in this manner can swing relative to the scaffolding main body 11 within an angular range of 90° between rearward and upward.

[0044] The deployable scaffold 13 deploys to the side (to the right in this embodiment) of the scaffold main body 11 to form an additional scaffold. The deployable scaffold 13 is made of a metal such as steel. The deployable scaffold 13 includes a first deployable scaffold 131, a second deployable scaffold 132, and two mounting members 133 and 134.

[0045] The first deployable scaffold 131 is a rectangular hollow frame that is elongated in the front-rear direction. The length of the first deployable scaffold 131 in the front-rear direction is the same as the length of the frame member 111 of the scaffold main body 11 in the front-rear direction. The length of the first deployable scaffold 131 in the left-right direction is shorter than the length of the frame member 111 in the left-right direction. The first deployable scaffold 131 is connected to the right end of the frame member 111 so as to be swingable upward within an angle range of 180° between the left and right. That is, the first deployable scaffold 131 can be deployed to the right of the scaffold main body 11 and can be stored on the side of the scaffold main body 11.

[0046] The length of the first deployable scaffold in the front-rear direction may be shorter than the length of the frame member in the front-rear direction in the present invention, and the length of the first deployable scaffold in the left-right direction may be the same as the length of the frame member in the left-right direction.

[0047] The second deployable scaffold 132 is a rectangular hollow frame that is elongated in the front-rear direction. The length of the second deployable scaffold 132 in the front-rear direction is shorter than the length of the first deployable scaffold 131 in the front-rear direction. The length of the second deployable scaffold 132 in the left-right direction is shorter than the length of the first deployable scaffold 131 in the left-right direction. In other words, the floor area of ​​the second deployable scaffold 132 is smaller than the floor area of ​​the first deployable scaffold 131. The second deployable scaffold 132 is connected to the right end of the first deployable scaffold 131 so as to be swingable upward within an angle range of 180° between the left and right. In other words, the second deployable scaffold 132 can be deployed to the right of the first deployable scaffold 131 and can be stored on the first deployable scaffold 131 side.

[0048] The mounting members 133, 134 are members to which wire rods L3, L4, which will be described later, are attached. The mounting members 133, 134 are an example of a second mounting member in the present invention. The mounting members 133, 134 are substantially semicircular and made of a metal such as steel. The mounting member 133 is connected to the right front end of the first deployable scaffold 131 so as to protrude above the end. The mounting member 134 is connected to the right rear end of the first deployable scaffold 131 so as to protrude above the end.

[0049] A part of the first deployment scaffold in the present invention may function as the second attachment member in the present invention. That is, for example, a hole to which a wire can be attached may be formed in a part of the first deployment member in the present invention.

[0050] FIG. 4 is a plan view of the temporary scaffolding 10 viewed from above in a state in which the deployable scaffolding 13 is deployed (hereinafter referred to as the "deployed state").

[0051] The deployable scaffold 13 is deployed to the right of the scaffold main body 11, that is, laterally in the short side direction of the scaffold main body 11. In the deployed state, the first deployable scaffold 131 is located to the right (right side) of the scaffold main body 11, and the second deployable scaffold 132 is located to the right (right side) of the first deployable scaffold 131. As a result, the floor area of ​​the scaffold that can be formed by the unit 1 in the left-right direction increases by the floor area of ​​each of the first deployable scaffold 131 and the second deployable scaffold 132, compared to the floor area of ​​the scaffold main body 11 alone.

[0052] In this embodiment, the first deployable scaffold 131 and the second deployable scaffold 132 each do not have a member corresponding to the top plate 115 of the scaffold main body 11. That is, the first deployable scaffold 131 and the second deployable scaffold 132 each have only the skeleton of the deployable scaffold 13. As a result, the deployable scaffold 13 is not effectively utilized by the temporary scaffold 10 alone, but the weight of the temporary scaffold 10 is lightened, and the portability of the temporary scaffold 10 is improved. In addition, the floor area of ​​the second deployable scaffold 132 is smaller than the floor area of ​​the first deployable scaffold 131. Therefore, when the deployable scaffold 13 is not deployed (hereinafter referred to as the "undeployed state"), at least a part of the second deployable scaffold 132 can be accommodated in the internal space of the first deployable scaffold 131. As a result, the deployable scaffold 13 can be folded compactly.

[0053] The floor area of ​​the second deployable scaffold in the present invention may be the same as the floor area of ​​the first deployable scaffold in the present invention.

[0054] FIG. 5 is a rear view of the temporary scaffolding 10 in an undeployed state, as seen from the rear.

[0055] In the undeployed state, the deployable scaffold 13 is folded and arranged above the scaffold main body 11. At this time, the right end portion of the second deployable scaffold 132 is housed in the internal space of the first deployable scaffold 131.

[0056] Return to Figures 2-4. The support unit 20 temporarily supports the temporary scaffolding 10 when the temporary scaffolding 10 is temporarily set up in an internal space. The support unit 20 includes a first support unit 21 and a second support unit 22.

[0057] The first support unit 21 temporarily supports the temporary scaffolding 10 when the temporary scaffolding 10 is temporarily set up in an internal space. The first support unit 21 includes two fixing members 211, 212 and two temporary wires L11, L12.

[0058] The fixing members 211, 212 are fixed to the manhole MH when the temporary scaffolding 10 is temporarily set up in an internal space, and temporarily support the temporary scaffolding 10 via the temporary wires L11, L12. The fixing members 211, 212 are examples of the first support member in the present invention. The fixing members 211, 212 are substantially U-shaped plates when viewed in the up-down direction, and are made of metal such as steel. The fixing member 211 includes a fixing portion 211a and an attachment portion 211b. The fixing member 212 includes a fixing portion 212a and an attachment portion 212b. In this embodiment, the fixing member 212 has the same shape and configuration as the fixing member 211, and is used in a state in which the fixing member 211 is rotated 180° in the left-right direction, for example.

[0059] The fixing portion 211a is formed by protruding upward from an edge portion of the left end portion of the fixing member 211. The attachment portion 211b is made of a wire material and has a U-shape when viewed in the left-right direction.

[0060] The fixing portion 212a is formed by protruding downward from an edge portion of the right end portion of the fixing member 212. The attachment portion 212b is made of a wire material and has a U-shape when viewed in the left-right direction.

[0061] The configuration of the fixing member (first support member) in the present invention is not limited to this embodiment, so long as the fixing member is attachable and detachable to the opening and the first temporary wire in the present invention can be attached to the fixing member.

[0062] The temporary wires L11 and L12 temporarily support the temporary scaffolding 10 when the temporary scaffolding 10 is temporarily set up in an internal space. The temporary wires L11 and L12 are examples of the first temporary wires in the present invention. The temporary wires L11 and L12 are, for example, chains made of metal such as steel. One end (rear end) of the temporary wire L11 is attached to the mounting part 211b of the fixing member 211. The other end (tip) of the temporary wire L11 is configured to be detachable from the mounting member 112 of the scaffolding main body 11. One end (rear end) of the temporary wire L12 is attached to the mounting part 212b of the fixing member 212. The other end (tip) of the temporary wire L12 is configured to be detachable from the mounting member 113 of the scaffolding main body 11.

[0063] The second support unit 22 temporarily supports the temporary scaffolding 10 when the temporary scaffolding 10 is temporarily set up in an internal space. The second support unit 22 includes a support member 221, a winch 226, and a temporary wire L21.

[0064] The support member 221 is composed of a support arm 222, a fixed member 223, and two pulleys 224 and 225. The support member 221 is an example of a second support member according to the present invention.

[0065] The support arm 222 rotatably supports two pulleys 224, 225. The support arm 222 is made of a pair of L-shaped frames that are long and thin in the front-rear direction. The support arm 222 is made of a metal such as steel.

[0066] The fixing member 223 fixes the support arm 222 to the manhole MH when the temporary scaffolding 10 is temporarily set up in an internal space. The fixing member 223 is substantially U-shaped when viewed in the left-right direction, and is made of metal such as steel. The fixing member 223 includes a fixing portion 223a. The fixing member 223 is attached to the rear end of the support arm 222 with the fixing portion 223a disposed above the support arm 222. In this embodiment, the fixing member 223 has the same shape and configuration as the fixing member 211, and is used in a state in which the fixing member 211 is rotated 90° in the left-right direction, for example.

[0067] The fixing portion 223a is formed by an edge portion of the upper end of the fixing member 223 protruding rightward.

[0068] The pulleys 224, 225 guide the temporary wire L21 so that it can move back and forth. The pulleys 224, 225 are pulleys made of metal such as steel. The pulley 224 is rotatably supported at the rear of the support arm 222. The pulley 225 is rotatably supported at the front end of the support arm 222.

[0069] The winch 226 moves the temporary wire L21 back and forth and supports the rear end of the temporary wire L21. The winch 226 is, for example, a manual winch.

[0070] The temporary wire L21 temporarily supports the temporary scaffolding 10 when the temporary scaffolding 10 is temporarily set up in an internal space. The temporary wire L21 is an example of a second temporary wire in the present invention. The temporary wire L21 is, for example, a wire made of a metal such as steel. One end (rear end) of the temporary wire L21 is supported by the winch 226, and the other end (tip end) is configured to be detachable from the temporary mounting member 114 of the scaffolding main body 11.

[0071] The suspending unit 30 suspends the temporary scaffolding 10 in the internal space. The suspending unit 30 includes four suspending members 31, 32, 33, and 34, and four wires L1, L2, L3, and L4.

[0072] The suspending members 31-34 suspend the temporary scaffolding 10 via wires L1-L4. The suspending members 31 and 32 are examples of the first suspending members of the present invention. The suspending members 33 and 34 are examples of the second suspending members of the present invention. The suspending members 31-34 are, for example, in the form of a long, thin plate extending in the front-rear direction and made of a metal such as steel.

[0073] The wires L1-L4 suspend the temporary scaffolding 10 when the temporary scaffolding 10 is temporarily set up in an internal space. The wires L1 and L2 are examples of the first wire in the present invention, and the wires L3 and L4 are examples of the second wire in the present invention. The wires L1-L4 are, for example, chains made of metal such as steel. One end (upper end) of the wire L1 is attached to the hanging member 31. The other end (lower end) of the wire L1 is configured to be detachable from the mounting member 112 of the scaffolding main body 11. One end (upper end) of the wire L2 is attached to the hanging member 32. The other end (lower end) of the wire L2 is configured to be detachable from the mounting member 113 of the scaffolding main body 11. One end (upper end) of the wire L3 is attached to the hanging member 33. The other end (lower end) of the wire L3 is configured to be detachably attached to the mounting member 133 of the first deployable scaffold 131. One end (upper end) of the wire L4 is attached to the hanging member 34. The other end (lower end) of the wire L4 is configured to be detachably attached to the mounting member 134 of the first deployable scaffold 131.

[0074] ●How to set up temporary scaffolding Next, a method for temporarily setting up the temporary scaffolding 10 will be described below. In the following description, reference will also be made to Figs. 2 and 4.

[0075] 6 is an explanatory diagram showing a state in which the temporary scaffolding 10 has been transported to the manhole MH of the collecting chute SH. In this figure, for the sake of convenience, the illustration of the deployable scaffolding 13 is omitted.

[0076] First, the temporary scaffolding 10 is carried by a worker to the vicinity of the manhole MH of the collecting chute SH. At this time, the worker holds the gripping members 125, 126 and carries the temporary scaffolding 10 using the transport wheels 116, 117.

[0077] Next, the support member 221 is attached to the manhole MH. Specifically, with the front half of the support arm 222 inserted into the internal space through the manhole MH, the fixing member 223 is fixed to the upper end of the manhole MH, for example, by a bolt (not shown) fitted into the fixing portion 223a. At this time, the support arm 222 is disposed so as to extend horizontally (front-rear direction) toward the internal space.

[0078] Next, a winch 226 is attached to the ceiling (for example, an H-shaped steel beam installed near the furnace roof) above and behind the manhole MH.

[0079] Next, the fixing members 211, 212 are attached to the manhole MH. Specifically, the fixing member 211 is fixed to the left end of the manhole MH by, for example, a bolt (not shown) fitted into the fixing portion 211a. On the other hand, the fixing member 212 is fixed to the right end of the manhole MH by, for example, a bolt (not shown) fitted into the fixing portion 212a.

[0080] Next, the temporary scaffolding 10 is transported, for example, over a slope SP (see FIG. 3) arranged outside the manhole MH, to the manhole MH.

[0081] Next, the tip of the temporary wire L21 is passed under the pulley 224 and over the pulley 225, and is attached to the temporary mounting member 114 of the scaffolding main body 11. At this time, the temporary wire L21 supports the front end of the temporary scaffolding 10.

[0082] Next, the tip of the temporary wire L11 is attached to the mounting member 112 of the scaffolding main body 11. Also, the tip of the temporary wire L12 is attached to the mounting member 113 of the scaffolding main body 11. At this time, the temporary wires L11 and L12 are in a slack state.

[0083] The temporary scaffolding 10 is then brought into the interior space from the front end.

[0084] 7 is an explanatory diagram showing the scaffolding body 11 and the deployable scaffolding 13 of the temporary scaffolding 10 immediately after being carried into the internal space of the collecting chute SH. For the sake of convenience, the deployable scaffolding 13 is omitted from the drawing.

[0085] Next, the temporary scaffolding 10 is carried into the internal space until the entire scaffolding body 11 is carried into the internal space. At this time, the front end of the temporary scaffolding 10 is suspended by the winch 226 and the temporary wire L21 so as not to fall downward into the internal space. Also, the arm member 12 is inclined rearward from the scaffolding body 11. The second stopper 124 is disposed below the manhole MH.

[0086] Next, the auxiliary wheels 118, 119 are brought into contact with the inner wall surface W1 of the wall on the manhole MH side of the collecting chute SH. Next, the scaffolding body 11 is lowered downward into the internal space while the front end of the temporary scaffolding 10 is suspended by the winch 226 and the temporary wire L21. At this time, the auxiliary wheels 118, 119 roll on the inner wall surface W1, so that the scaffolding body 11 is smoothly lowered along the inner wall surface W1 without getting caught on the inner wall surface W1. As a result, the workload of the worker is reduced. In addition, the arm member 12 is raised upward from the rear in accordance with the transportation of the scaffolding body 11. The arm member 12 is raised until one end 121a, 122a of the abutting members 121, 122 is positioned above the scaffolding body 11 and parallel to the vertical direction. At this time, the first stopper 123 of the arm member 12 is disposed so as to face the left and right end edges (rear surface) of the manhole MH and abuts against the left and right end edges of the manhole MH. The second stopper 124 of the arm member 12 is disposed so as to face the lower end edge (rear surface) of the manhole MH and abuts against the lower end edge of the manhole MH. As a result, the first stopper 123 and the second stopper 124 function as stoppers that prevent the temporary scaffolding 10 from falling into the internal space.

[0087] It should be noted that the first stopper and the second stopper in the present invention only need to be disposed so as to face the edge of the manhole, and are not required to abut against the edge of the manhole.

[0088] Next, the scaffolding body 11 is lowered in the internal space until the abutting members 121, 122 abut against the inner peripheral surface of the manhole MH. When the abutting members 121, 122 abut against the inner peripheral surface of the manhole MH, the arm member 12 is attached to the manhole MH. At this time, the temporary wires L11, L12 are stretched between the fixing members 211, 212 and the mounting members 112, 113 of the scaffolding body 11 so as to suspend the front end of the temporary scaffolding 10. As a result, the front end of the temporary scaffolding 10 is fixed to the manhole MH by the fixing members 211, 212 via the temporary wires L11, L12. Next, the second stopper 124 of the arm member 12 is fixed to the lower end of the manhole MH by a clamping device such as a vice.

[0089] Next, the second support unit 22 is removed. That is, the tip of the temporary wire L21 is removed from the temporary mounting member 114 of the scaffolding main body 11. Next, the support member 221 is removed from the manhole MH, and the winch 226 is removed from the ceiling.

[0090] 8 is an explanatory diagram showing a state in which the second support unit 22 has been removed from the manhole MH. For ease of explanation, the deployable scaffold 13 is omitted from the drawing.

[0091] When the second support unit 22 is removed, the temporary scaffolding 10 is fixed to the manhole MH by the fixing members 211, 212, the temporary wires L11, L12, and the arm member 12 (first stopper 123, second stopper 124).

[0092] 9 is an explanatory diagram showing a state in which the first support unit 21 has been removed and the hanging members 31-34 have been attached. For ease of explanation, the illustration of the deployable scaffold 13 is omitted in this figure. In this figure, the opening and closing range of the valve V is indicated by a two-dot chain line.

[0093] Next, the worker who has moved onto the scaffold body 11 attaches the suspending members 31-34 to the inner wall surfaces W1 and W2 by a joining means such as welding. At this time, the suspending members 31-34 are attached, for example, above the mounting members 112, 113, 133, and 134, at a position where they are not interfered with by the operation of the collecting chute SH (the movement of the input raw materials and the opening and closing operation of the valve V). That is, for example, the suspending member 31 is attached to the inner wall surface W2 approximately directly above the mounting member 112, the suspending member 32 is attached to the inner wall surface W2 approximately directly above the mounting member 113, the suspending member 33 is attached to the inner wall surface W2 slightly diagonally above the left of the mounting member 133, and the suspending member 34 is attached to the inner wall surface W1 slightly diagonally above the left of the mounting member 134. Therefore, the suspending members 31-34 are not damaged or come off due to the collision of the raw materials, and the opening and closing operation of the valve V is not hindered by the suspending members 31-34. As a result, the hanging members 31-34 can be permanently attached to the inner wall surfaces W1, W2.

[0094] Next, the upper end of wire L1 is attached to hanging member 31 (hung in the internal space), and the lower end of wire L1 is attached to mounting member 112. Moreover, the upper end of wire L2 is attached to hanging member 32 (hung in the internal space), and the lower end of wire L2 is attached to mounting member 113. At this time, wires L1 and L2 are stretched between mounting members 112 and 113 and hanging members 31 and 32.

[0095] Next, the first support unit 21 is removed from the manhole MH. That is, the temporary wires L11, L12 are removed from the mounting members 112, 113, and the fixing members 211, 212 are removed from the manhole MH. At this time, the temporary scaffolding 10 is temporarily set up in the internal space by the hanging members 31, 32, the wires L1, L2, and the arm member 12 (first stopper 123, second stopper 124). Next, the deployable scaffolding 13 is deployed to the right side of the scaffolding main body 11.

[0096] FIG. 10 is an explanatory diagram showing the temporary scaffolding 10 in the deployed state as viewed from above. This figure shows that two manholes MH are provided in the wall of the collecting chute SH at positions that do not face each other, and a temporary scaffolding 10 is attached to each manhole MH (the same applies to Figure 12 below).

[0097] In the deployed state, the front and rear ends of the right end of the second deployable scaffold 132 abut against the inclined surface of the right inner wall surface W3 of the collecting chute SH. As a result, the right end of the second deployable scaffold 132 is supported by the inner wall surface W3 of the collecting chute SH.

[0098] 11 is an explanatory diagram showing a state in which the temporary scaffolding 10 is temporarily set up in the internal space of the collecting chute SH. In the figure, the open / close range of the valve V is indicated by a two-dot chain line.

[0099] Next, the upper end of the wire L3 is attached to the hanging member 33 (hung in the internal space), and the lower end of the wire L3 is attached to the mounting member 133. Also, the upper end of the wire L4 is attached to the hanging member 34 (hung in the internal space), and the lower end of the wire L4 is attached to the mounting member 134. At this time, the wires L3 and L4 are stretched between the mounting members 133 and 134 and the hanging members 33 and 34. As a result, the temporary scaffolding 10 is temporarily set up in the internal space by the hanging members 31-34, the wires L1-L4, and the arm member 12 (first stopper 123, second stopper 124). The scaffolding main body 11 is temporarily set up so as to extend horizontally (forward and backward) from the inner wall surface W1 where the manhole MH is provided into the internal space. The deployed scaffolding 13 is deployed to the right of the short side direction (left and right direction) of the scaffolding main body 11 and temporarily set up. The temporary scaffolding 10 thus temporarily set up does not interfere with the opening and closing range of the valve V. Therefore, the valve V can be opened and closed while the temporary scaffolding 10 is temporarily set up.

[0100] FIG. 12 is an explanatory diagram showing the state in which the temporary scaffolding 10 is temporarily set up in the internal space of the collecting chute SH, as viewed from above.

[0101] Next, a temporary scaffolding board P1 is laid across the upper side of the first deployable scaffolding 131 so as to protrude in the front-to-rear direction of the first deployable scaffolding 131. In addition, a temporary scaffolding board P2 is laid across the upper side of the second deployable scaffolding 132 so as to protrude in the front-to-rear direction of the second deployable scaffolding 132.

[0102] Here, as shown in Figure 12, when a temporary scaffolding 10 is also temporarily set up at the other manhole MH, five temporary scaffolding boards P3, P4, P5, P6, and P7 are spanned across the upper sides of the two scaffolding bodies 11.

[0103] In this way, by bridging the scaffolding boards P1 and P2 across the deployable scaffolding 13, the temporary scaffolding 10 can temporarily set up scaffolding in the internal space equivalent to the floor area of ​​the scaffolding main body 11, the first deployable scaffolding 131, and the second deployable scaffolding 132. Also, as shown in Fig. 13, by bridging the scaffolding boards P3-P7 between the two temporary scaffoldings 10, the temporary scaffolding 10 can temporarily set up scaffolding across almost the entire horizontal area of ​​the internal space.

[0104] Summary According to the embodiment described above, the unit 1 includes a scaffolding body 11 and an arm member 12. The scaffolding body 11 is configured to extend horizontally from the inner wall surface W1 of the wall in which the manhole MH (opening) is provided toward the internal space. The arm member 12 is connected to the scaffolding body 11 and configured to be attachable to the manhole MH. The scaffolding body 11 includes attachment members 112, 113 that can be attached to the wires L1, L2 suspended in the internal space. According to this configuration, the scaffolding body 11 is supported by the manhole MH by the arm member 12 and suspended in the internal space by the wires L1, L2. As a result, the work of the worker on the scaffolding body 11 is not hindered by anything other than the wires L1, L2, and becomes easy. In addition, the scaffolding body 11 is temporarily installed in the internal space by the arm member 12 and the wires L1, L2. Therefore, as long as the facility has an opening to which the arm member 12 can be attached and wires L1, L2 that can be suspended in the internal space, the unit 1 can also be applied to a vertical wall surface.

[0105] Furthermore, according to the embodiment described above, the arm member 12 is connected to one end (rear end) in the longitudinal direction (front-rear direction) of the scaffolding main body 11. The mounting members 112, 113 are connected to the other end (front end) in the longitudinal direction of the scaffolding main body 11. In other words, there are no objects that would hinder the work of a worker above the scaffolding main body 11, other than the front and rear ends. This makes it easier for the worker to work.

[0106] Furthermore, according to the embodiment described above, the arm member 12 is L-shaped in a side view and is swingably connected to the scaffolding main body 11. With this configuration, when being carried into the internal space of the scaffolding main body 11, the arm member 12 can be retreated to a position where it is unlikely to interfere with the manhole MH.

[0107] Furthermore, according to the embodiment described above, the arm member 12 is provided with abutment members 121, 122 that can abut against the inner surface of the manhole MH. The abutment member 121 is arranged parallel to the abutment member 122. According to this configuration, the two abutment members arranged in parallel abut against the inner surface of the manhole MH, so that the unit 1 can be temporarily installed without rotating about an axis in the front-rear direction.

[0108] Furthermore, according to the embodiment described above, the arm member 12 includes a first stopper 123 that is spanned between the abutment members 121, 122, and a second stopper 124 that is attached to the first stopper 123. The length of the first stopper 123 is longer than the horizontal length of the manhole MH. The second stopper 124 can be disposed so as to face the edge (rear surface) of the manhole MH. With this configuration, the rear end side of the scaffolding main body 11 is securely attached to the manhole MH, and the scaffolding main body 11 is prevented from falling into the internal space.

[0109] Furthermore, according to the embodiment described above, the scaffolding body 11 includes the transport wheels 116, 117 and the auxiliary wheels 118, 119. The transport wheels 116, 117 are disposed at the front end of the scaffolding body 11 and protrude downward from the scaffolding body 11. The auxiliary wheels 118, 119 are disposed at the rear end of the scaffolding body 11 and protrude backward from the scaffolding body 11. According to this configuration, when the scaffolding body 11 is transported, the transport wheels 116, 117 roll on the floor surface, so that the scaffolding body 11 can be transported smoothly. Furthermore, when the scaffolding body 11 is moved vertically in the internal space, the auxiliary wheels 118, 119 roll on the inner wall surface W1, so that the scaffolding body 11 can be moved smoothly.

[0110] Furthermore, according to the embodiment described above, the unit 1 has the fixing members 211, 212 that can be attached to and detached from the manhole MH. The mounting members 112, 113 of the scaffolding main body 11 can be attached to the temporary wires L11, L12 attached to the fixing members 211, 212. According to this configuration, when the scaffolding main body 11 is transported into the internal space, the scaffolding main body 11 is temporarily supported by the fixing members 211, 212 attached to the manhole MH via the temporary wires L11, L21. As a result, for example, the scaffolding main body 11 is reliably supported by the manhole MH until the wires L1, L2 are attached to the mounting members 112, 113.

[0111] Furthermore, according to the embodiment described above, the unit 1 has a support member 221 that can be attached to and detached from the manhole MH. The scaffolding main body 11 has a temporary mounting member 114. The temporary mounting member 114 is connected to the front end of the scaffolding main body 11 and can be attached to a temporary wire L21 that can advance and retreat into the internal space via the support member 221. According to this configuration, when the scaffolding main body 11 is transported into the internal space, the front end of the scaffolding main body 11 is temporarily supported by the support member 221 attached to the manhole MH via the advanceable and retreatable temporary wire L21. As a result, the posture of the scaffolding main body 11 during transportation is maintained by adjusting the direction and amount of advance and retreat of the temporary wire L21.

[0112] Furthermore, according to the embodiment described above, the support member 221 includes the support arm 222 and pulleys 224, 225 rotatably arranged at both ends of the support arm 222. The support arm 222 is configured to extend horizontally from the manhole MH toward the internal space. According to this configuration, the temporary wire L21 can suspend the front end of the scaffolding main body 11 from approximately above via the pulley 225 at the front end of the support arm 222.

[0113] Furthermore, according to the embodiment described above, the unit 1 has the deployable scaffold 13 that is deployably connected to the right side of the short side direction (left-right direction) of the scaffold main body 11. The deployable scaffold 13 has mounting members 133, 134 that can be attached to the wires L3, L4 suspended in the internal space. The mounting members 133, 134 are arranged at the ends of the deployable scaffold 13. According to this configuration, the unit 1 can easily add a scaffold (the deployable scaffold 13) to the side of the scaffold main body 11 in the internal space regardless of the size of the opening. In addition, since the deployable scaffold 13 is suspended from the wires L3, L4, it does not hinder the work of the worker and can be applied to a vertical wall surface. Furthermore, as described above, the temporary scaffold 10 does not have a reinforcing diagonal member required for conventional temporary scaffolds between the arm member 12 and the scaffold main body 11. Therefore, the deployable scaffold 13 can be deployed to the side (to the right in this embodiment) of the scaffold main body 11 in the range from the front end to the rear end of the scaffold main body 11. As a result, in the internal space, the area (opening area) that is not covered by the scaffold main body 11 and the deployable scaffold 13 is reduced, and the area that serves as a scaffold for workers is increased.

[0114] Furthermore, according to the embodiment described above, the deployable scaffold 13 includes a first deployable scaffold 131 deployably connected to the right of the scaffold main body 11, and a second deployable scaffold 132 deployably connected to the right of the first deployable scaffold 131. In an undeployed state, the deployable scaffold 13 is folded and disposed above the scaffold main body 11. According to this configuration, the unit 1 can temporarily set up to two levels of additional scaffolding, and can also fold (store) the deployable scaffold 13 compactly.

[0115] Furthermore, according to the embodiment described above, the first deployable scaffold 131 and the second deployable scaffold 132 are each in the shape of a rectangular frame, and the floor area of ​​the second deployable scaffold 132 is smaller than the floor area of ​​the first deployable scaffold 131. According to this configuration, in the undeployed state, the end of the second deployable scaffold 132 can be stored in the internal space of the first deployable scaffold 131. Therefore, the deployable scaffold 13 can be folded compactly.

[0116] Furthermore, according to the embodiment described above, the mounting members 133, 134 are disposed at the end (right end) of the first deployable scaffold 131 on the side of the second deployable scaffold 132. With this configuration, the work of the worker is less likely to be hindered by the wires L3, L4, making the work easier.

[0117] Furthermore, according to the embodiment described above, the unit 1 has the suspending members 31-34 that can be attached to the inner wall surfaces W1, W2. The suspending members 31-34 can be attached to the wires L1-L4. With this configuration, the scaffolding main body 11 and the deployable scaffolding 13 can be temporarily set up in the internal space by the suspending members 31-34 attached at any position.

[0118] It should be noted that the unit only needs to include a scaffolding body and an arm member, and the configuration of the unit is not limited to this embodiment. That is, for example, the unit may not include a deployable scaffolding, or may not include a hanging unit. In this case, for example, the hanging unit may be included in a facility having an internal space, or may be replaced by an item included in the facility. Also, for example, the unit may not include a support unit. In this case, for example, the scaffolding body may be temporarily supported by a temporary wire attached to the opening.

[0119] In addition, the number of scaffolds included in the deployable scaffold of the present invention is not limited to "2" consisting of the first deployable scaffold and the second deployable scaffold. That is, for example, the deployable scaffold of the present invention may include "1" scaffold or may include "3" or more scaffolds.

[0120] Furthermore, the shape of the scaffold body and / or the deployable scaffold of the present invention is not limited to a rectangular shape, i.e., for example, the shape may be a polygonal shape such as a triangle or a hexagon, or a parallelogram extending diagonally from an opening.

[0121] Furthermore, the number of mounting members of the scaffold body and / or the deployable scaffold in the present invention is not limited to "2." That is, for example, the number of mounting members may be "1" or "3."

[0122] Furthermore, the deployable scaffold in the present invention may be deployed to the left of the scaffold body, or may be deployed in both the left and right directions of the scaffold body.

[0123] Furthermore, the second deployable scaffold in the present invention may be suspended by a wire. That is, for example, the suspension unit in the present invention may include a suspension member and a wire that suspends the second deployable scaffold.

[0124] Furthermore, when the unit is installed multiple times, the hanging members do not have to be newly installed, i.e., the hanging members installed in the first installation are reused.

[0125] Furthermore, when removing the unit (the temporary scaffolding of the present invention) from the internal space, for example, the unit (the temporary scaffolding of the present invention) can be removed by carrying out the above-mentioned temporary installation method in reverse. In this case, the hanging members may remain attached to the inner wall surface for the next temporary installation.

[0126] Furthermore, the method of temporarily setting up this unit is not limited to this embodiment, so long as the temporary scaffolding can be temporarily set up in the interior space. That is, for example, the order in which the first support unit and the second support unit are attached to the manhole may be reversed from that of this embodiment, and if the hanging member is to be reused, the step of attaching the hanging member to the inner wall surface may be omitted. [Explanation of symbols]

[0127] 1 Temporary scaffolding unit 10 Temporary scaffolding 11 Scaffolding body 112 Mounting member (first mounting member, first temporary mounting member) 113 Mounting member (first mounting member, first temporary mounting member) 114 Temporary mounting member (Second temporary mounting member) 116 Transport Wheel 117 Transport Wheel 118 Training Wheels 119 Training Wheels 12 Arm member 121 abutment member (first abutment member) 122 abutment member (second abutment member) 123 First stopper 124 Second Stopper 13 Deployable scaffolding 131 First Deployment Platform 132 Second Deployment Platform 133 Mounting member (second mounting member) 134 Mounting member (second mounting member) 211 Fixing member (first support member) 212 Fixing member (first support member) 221 Support member 222 Support Arm 224 Pulley 225 Pulley 31 Hanging member (1st hanging member) 32 Hanging member (1st hanging member) 33 Hanging member (second hanging member) 34 Hanging member (second hanging member) L1,L2 wire rod (first wire rod) L3,L4 wire rod (second wire rod) L11, L12 Temporary Wire (First Temporary Wire) L21 Temporary Wire (Second Temporary Wire)

Claims

1. A temporary scaffolding unit that is temporarily installed in an internal space of a facility through an opening provided in a wall of the facility, A scaffolding body configured to extend horizontally from the inner wall surface of the wall in which the opening is provided toward the internal space; An arm member connected to the scaffolding body and configured to be attachable to the opening; and The scaffold body includes: a first attachment member attachable to the first wire suspended in the internal space; Equipped with The arm member is a stopper that can be positioned opposite an edge of the opening; Equipped with A temporary scaffolding unit characterized by:

2. The arm member is connected to one end of the scaffold body in the longitudinal direction, The first mounting member is connected to the other end of the scaffolding body in the longitudinal direction. A temporary scaffolding unit according to claim 1.

3. The arm member is L-shaped when viewed from the side and is swingably connected to the scaffolding main body. A temporary scaffolding unit according to claim 2.

4. The arm member is A first contact member capable of contacting an inner surface of the opening; A second contact member that is capable of contacting the inner surface of the opening and is disposed parallel to the first contact member; Equipped with A temporary scaffolding unit according to claim 1.

5. The scaffold body includes: An auxiliary wheel disposed at one end of the longitudinal direction of the scaffolding body and protruding laterally toward the one end side of the scaffolding body; A transport wheel is disposed at the other end of the scaffolding body in the longitudinal direction and protrudes downward from the scaffolding body; Equipped with A temporary scaffolding unit according to claim 1.

6. A first support member that is detachable from the opening; and The scaffold body includes: A first temporary mounting member that is disposed at the other end of the scaffolding body and can be attached to a first temporary wire that is attached to the first support member; Equipped with A temporary scaffolding unit according to claim 2.

7. The first mounting member is integrally formed with the first temporary mounting member. A temporary scaffolding unit according to claim 6.

8. A second support member that is detachable from the opening; and The scaffold body includes: A second temporary mounting member that is connected to the other end of the scaffolding body and can be attached to a second temporary wire that can freely advance and retreat into the internal space via the second support member; Equipped with A temporary scaffolding unit according to claim 2.

9. The second support member is A support arm configured to extend in the horizontal direction from the opening toward the internal space; Two pulleys are arranged at both ends of the support arm in the longitudinal direction and guide the second temporary wire; Equipped with A temporary scaffolding unit according to claim 8.

10. A first suspension member that can be attached to an inner surface of the equipment and to the first wire; It is made of A temporary scaffolding unit according to claim 1.

11. A deployment scaffold that is deployably connected to the scaffold main body in the short side direction of the scaffold main body, and The deployable scaffold comprises: A second mounting member that is disposed at an end of the deployable scaffold and can be attached to a second wire suspended in the internal space; Equipped with A temporary scaffolding unit according to claim 1.

12. The deployable scaffold comprises: A first deployable scaffold that is deployably connected to a side of the scaffold main body; A second deployment scaffold that is deployably connected to a side of the first deployment scaffold; Equipped with A temporary scaffolding unit according to claim 11.

13. Each of the first and second deployable scaffolds has a rectangular frame shape, The floor area of ​​the second deployment scaffold is smaller than the floor area of ​​the first deployment scaffold; A temporary scaffolding unit according to claim 12.

14. The second mounting member is disposed at an end of the first deployment scaffold on the second deployment scaffold side. A temporary scaffolding unit according to claim 12 or 13.

15. When the deployed scaffold is not deployed, the deployed scaffold is folded and disposed above the scaffold body; A temporary scaffolding unit according to any one of claims 11 to 14.

16. A second suspension member that can be attached to an inner surface of the equipment and to the second wire; It is made of A temporary scaffolding unit according to any one of claims 11 to 15.

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