Work scaffold and work scaffold unit

Abstract

To provide a work scaffold that enables preferable work at height on a building skeleton.SOLUTION: A work scaffold 1 is used for performing high lift work on a building skeleton B (beam B2). The work scaffold 1 includes a ladder member 10 extending vertically in an extension manner and for a worker to climb to a high position, a scaffold member 20 attached to the upper end of the ladder member 10 and extending horizontally from the upper end of the ladder member 10 to serve as a foothold for the worker, and an engaging member 40 provided on the outer edge of the scaffold member 20 and detachably engaging with an engaged portion provided on the skeleton B (beam B2) or detachably engaging with an engaged member (hanging member 50) attached to the skeleton B.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a working scaffold and a working scaffold unit, and in particular to a working scaffold and a working scaffold unit for performing work at height on the framework of a building. [Background technology]

[0002] 2. Description of the Related Art Stepladders and ladders have been used in the past to perform work at height, such as joining columns and beams (main beams and minor beams) during the construction of a building. For example, the ladder described in Patent Document 1 is provided with a ladder support mechanism that enables the ladder to be stably raised and lowered, for the purpose of safely performing work at height during construction of a building. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-124588 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, when working at height on the framework of a building, it has been required that a work scaffold can be easily set up around the framework and that it can be set up stably. For example, with a conventional stepladder, it was difficult to set it close to the height work position on the building's main beam. If there was a step on the floor material of the building or other materials were placed there, there was a risk that the four legs of the stepladder could not be set in the appropriate positions. On the other hand, with the ladder described in Patent Document 1, it was necessary to fix the ladder to multiple points of the building frame to prevent it from falling over.

[0005] An object of the present invention is to provide a working scaffold and a working scaffold unit that enable work at height to be performed suitably on the framework of a building. Another object of the present invention is to provide a working scaffold and a working scaffold unit that can be easily installed around a framework and can be installed stably. [Means for solving the problem]

[0006] The above problem is solved by the work scaffold of the present invention, which is a work scaffold for performing high-altitude work on the main body of a building, comprising: a ladder member extending a long length in the vertical direction for a worker to climb to high places; a scaffold member attached to the upper end of the ladder member and extending horizontally from the upper end of the ladder member to provide a foothold for the worker; and an engaging member provided on the outer edge of the scaffold member and detachably engaging with an engaged portion provided on the main body or detachably engaging with an engaged member attached to the main body. With the above configuration, a work scaffold can be realized that allows for suitable work at height on the structure of a building. More specifically, the work scaffold comprises ladder members, scaffold members, and engaging members that detachably engage with the engaged parts of the structure (engaged members provided on the structure). Therefore, the engaging members allow it to be attached to the structure (e.g., beams) more easily than before. It can also be installed in close proximity to the structure. In addition, the engaging members and ladder members allow it to be installed more stably than conventional stepladders (four-legged stepladders) (it can reduce interference with floor steps and materials on the floor).

[0007] In this case, the work scaffolding is attached to a hanging member as the engaged member attached to a beam of the building, and is used for performing the high-altitude work on the beam or around the beam, the ladder member is installed on a floor member of the building, and the engaging member is provided on the other end of the outer edge of the scaffolding member opposite the one end on the ladder member side and is positioned so as to protrude from the other end of the scaffolding member, and is detachably engaged in the vertical direction with the engaged portion provided on the hanging member, and when engaged with the engaged portion, clamps the engaged portion from above. With the above configuration, work at height can be carried out suitably on or around the beams of a building. Furthermore, as described above, the engaging member is detachably engaged in the vertical direction with the engaged portion provided on the hanging member, so that the work scaffolding can be easily assembled to the beam (the hanging member provided on the beam). Furthermore, as described above, when the engaging member engages with the engaged portion, the engaging member clamps the engaged portion from above, so that the work scaffold can be stably assembled to the beam (hanging member).

[0008] In this case, it is preferable for the work scaffold unit to comprise the work scaffold as described in claim 1 or 2, and a hanging member as the engaged member attached to a beam of the building, wherein the hanging member comprises a hanging body that is long in the vertical direction, a hanging member that is provided at the upper end of the hanging body, extends horizontally from the upper end of the hanging body and is detachably hung on the beam, and an engaged portion that is provided in a lower part of the hanging body and engages with the engaging member of the work scaffold. With the above configuration, a work scaffold unit can be realized that can be easily assembled to a beam and can be stably installed.

[0009] In this case, the hanging member is provided at the upper end of the hanging body and is equipped with a switching member that switches the hanging member between a hanging state and a non-hanging state relative to the beam, and the hanging member is arranged to cover the beam from above, and when the hanging member is switched from the non-hanging state to the hanging state by the switching member, the hanging portion of the hanging member is hung from the side of the beam, surpassing the beam. As described above, by providing the switching member, the working scaffold unit can be easily attached to and detached from the beam. Furthermore, as described above, the hanging member is disposed so as to cover the beam from above, so that the hanging member can be stably hung from the beam. Furthermore, as described above, since the hook portion of the hook member extends beyond the beam and is hooked to the beam from the side, the suspending member can be securely hooked to the beam.

[0010] In this case, the hanging member has a fixed member fixed to the upper end of the hanging body and extending horizontally from the upper end of the hanging body, a movable member supported slidably on the fixed member and further extending horizontally from the fixed member, and a hanging portion provided at the tip of the movable member and hooked to the beam, and the switching member has a spring attached to the fixed member and biases the movable member to expand and contract relative to the fixed member, and the movable member is switched between a hooking position and a non-hooking position by the spring. With the above-described configuration, the latching member (movable member) can be switched between the latching position and the non-latching position with a simple configuration using a fixed member, a movable member, and a biasing spring.

[0011] In this case, the hanging body or the work scaffold is provided with an operating member for operating the switching member, and a connecting wire that connects the biasing spring and the operating member and pulls the biasing spring when the operating member is operated, and the switching member switches the movable member from the non-hooking position to the hooking position by the biasing spring being pulled by the operating member and the connecting wire and the movable member being biased by the biasing spring. By providing the operating member on the hanging body or the work scaffold as described above, a worker can easily perform an operation to hang the hanging member on a beam. For example, a worker can operate the operating member on the floor of a building.

[0012] In this case, the operating member is attached to the hanging body so as to be switchable between a normal position and an operating position for pulling the connection wire, a plurality of locking holes are formed on the outer surface of the operating member at intervals along the outer surface of the operating member, and a locking member capable of locking into the locking hole is attached to one end of the connecting wire on the operating member side, and the switching member is capable of adjusting the biasing force of the biasing spring when the operating member is switched to the operating position depending on the locking position of the locking member. With the above configuration, the hanging member can be securely hung in accordance with the attributes of the structure (beam attributes). In other words, the hanging position of the hanging member and the holding force when hung can be adjusted. Therefore, the work scaffold can be more stably assembled to the structure (beam). Effect of the Invention

[0013] The working scaffold and working scaffold unit of the present invention make it possible to suitably carry out work at height on the framework (e.g. beams) of a building. Moreover, it can be easily installed around a structure (for example, a beam) and can be installed stably. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a diagram showing the state in which a work scaffold unit is attached to the framework (beam) of a building. [Diagram 2] FIG. 2 is an exploded perspective view of the work scaffold and the hanging member. [Diagram 3] 4 is a side cross-sectional view of an engaging member of the work scaffold and an engaged portion of the hanging member. FIG. [Figure 4] FIG. 2 is a perspective view of the upper portion of the hanging member. [Diagram 5] FIG. 13 is a perspective view of the upper portion of the hanging member from a different angle. [Figure 6A] 11 is a side view of the latching member and the switching member, showing the non-latching position. FIG. [Figure 6B] 11 is a top view of the latching member and the switching member, showing the non-latching position. FIG. [Figure 7A] 11 is a side view of the latch member and the switching member, showing the latch position. FIG. [Figure 7B] 11 is a side view of the latch member and the switching member, showing the latch position. FIG. [Figure 8] FIG. 4 is a perspective view of a switching member and an operating lever, showing a normal position. [Figure 9] FIG. 4 is a perspective view of the operating lever, showing the operating position; [Figure 10A] FIG. 13 is a top view of a latching member and a switching member in a second embodiment, showing a non-latching position. [Figure 10B] FIG. 13 is a front view of a latching member and a switching member in a second embodiment, showing a non-latching position. [Figure 11A] 13 is a top view of a latching member and a switching member in a second embodiment, showing the latching position. FIG. [Figure 11B] 13 is a front view of a latching member and a switching member in a second embodiment, showing the latching position. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 11B. This embodiment relates to a "work scaffold" that is used for performing work at height on the structure of a building, can be easily installed around the structure, and enables stable installation. It also relates to a "work scaffold unit" that is equipped with a work scaffold.

[0016] <Work scaffold unit> As shown in FIG. 1, the work scaffold unit 1 is a tool that is attached to a beam B2 that constitutes a framework B during construction of a building, and is used for performing high-altitude work on or around the beam B2. Specifically, the work scaffold unit 1 is used when performing work such as joining a column B1 and a beam B2, and joining beams B2 to each other, and is installed on the floor panel B3 while attached to the beam B2. The work scaffold unit 1 is particularly suitable for use when working at heights at corners of the structure B. The reason for this is that a conventional four-legged stepladder could not be set up close to the pillar B1, and there was a risk of the stepladder tipping over and falling. The work scaffold unit 1 can be easily and stably set up close to the pillar B1. Below, the skeleton B of the building will be described, and then the work scaffold unit 1 will be described in detail.

[0017] As shown in FIG. 1, the building structure B comprises a column B1 (steel column) that is provided at a protruding corner (corner portion) of the building structure B and extends vertically, a beam B2 (main girder) that is connected to the side of the column B1 and extends in the frontage or projection direction of the building structure B, and floor panels B3 (floor members) that are provided around the column B1 and arranged in a row.

[0018] The column B1 and the beam B2 are connected by means of a fastening bolt B4 and a nut B5. The same is true for the beams B2. Specifically, the column plate fixed to the side surface of the column B1 is abutted against the beam end plate fixed to one end of the beam B2 in the extension direction, the fastening bolt B4 is fastened, and the nut B5 is tightened. In this way, the column B1 and the beam B2 are connected. In addition, the above-mentioned high-altitude work on or around the beams is not limited to the joining work of the column B1 and the beam B2, or the joining work of the beams B2 together, but may be other high-altitude work on the structure B.

[0019] The work scaffold unit 1 is hung from the beams B2 of the above-mentioned framework B, and is installed on the floor panel B3. Therefore, it can be stably attached to the beam B2. It can also be easily and stably installed on the floor panel B3 even at a protruding corner of the frame B. It can also be installed in a small space.

[0020] As shown in Figs. 1 to 9, the work scaffold unit 1 includes a work scaffold 10 and a hanging member 50 attached to the frame B (beam B2). The work scaffold 10 and the hanging member 50 can be separated. The work scaffold 10 is detachably attached to a hanging member 50 that is hung on a beam B2, and is installed on a floor panel B3.

[0021] <Work scaffolding> As shown in Figures 1 to 3, the work scaffold 10 comprises a ladder member 20 extending longitudinally in the vertical direction, a scaffold member 30 extending horizontally from the upper end of the ladder member 20, a pair of handrail members 35 provided on the outer edges (both edges) of the width of the scaffold member 30 and protruding upward, and an engaging member 40 provided on the outer edge (front edge) of the scaffold member 30 and engaging with a hanging member 50 (connecting plate 63).

[0022] As shown in Figs. 1 and 2, the ladder member 20 is a member for a worker to climb to a high place, and is installed on a floor panel B3 installed at a protruding corner of the body B. The ladder member 20 has a first support 21 and a second support 22 that are long in the vertical direction and are arranged at a predetermined interval, a plurality of connecting plates 23 that are arranged at intervals in the vertical direction and connect the first support 21 and the second support 22, and a reinforcing plate 24 and a second reinforcing plate 25 that are arranged at the upper ends of the first support 21 and the second support 22.

[0023] As shown in FIG. 2, the reinforcing plate 24 and the second reinforcing plate 25 reinforce the connecting portion between the first support 21 and the scaffolding member 30, and also reinforce the connecting portion between the second support 22 and the scaffolding member 30. The reinforcing plate 24 is a plate member that protrudes from the inner surfaces of the first support 21 and the second support 22 in the width direction of the ladder member 20 and connects the inner surfaces of the first support 21 and the second support 22 to the bottom surface of the scaffolding member 30. The second reinforcing plate 25 is a plate member that is provided so as to protrude from the front surface of each of the first support pillar 21 and the second support pillar 22, and connects the front surfaces of each of the first support pillar 21 and the second support pillar 22 to the bottom surface of the scaffolding member 30. The shape and arrangement of the reinforcing plates 24 and 25 can be changed as appropriate.

[0024] As shown in FIGS. 1 to 3, the scaffolding member 30 is a rectangular plate member which serves as a foothold for a worker. The scaffolding member 30 is fixed to the upper surface of the ladder member 20 and protrudes horizontally from the upper end of the ladder member 20. Handrail members 35 that are long in the vertical direction are fixed to both widthwise edges of the scaffold member 30. The handrail members 35 are rod-shaped members that are held by a worker. Furthermore, an engagement member 40 is formed on an extending end portion 30b (front edge portion) of the outer edge portion of the scaffolding member 30 opposite to the base end portion 30a to which the ladder member 20 is fixed.

[0025] As shown in Figs. 1 to 3, the engaging member 40 is provided so as to protrude from the front edge of the scaffolding member 30, and is a member that detachably engages with the hanging member 50 (connecting plate 63). As shown in FIG. 2, when the engaging member 40 engages with the connecting plate 63, the engaging member 40 holds the connecting plate 63 from above. Specifically, the engaging member 40 has an upper wall portion 40a and a bottom wall portion 40b that clamp the front edge portion of the scaffolding member 30 in the vertical direction, a side wall portion 40c that connects the front ends of the upper wall portion 40a and the bottom wall portion 40b, a second upper wall portion 40d that protrudes forward from the side wall portion 40c, and a second side wall portion 40e that protrudes downward from the front end portion of the second upper wall portion 40d. The engaging member 40 has an engaging portion 41 that is constituted by a side wall portion 40c, a second upper wall portion 40d, and a second side wall portion 40e. The engaging member 40 further includes a first reinforcing portion 42 (reinforcing wall portion) and a second reinforcing portion 43 (reinforcing portion having a rectangular cross section) that connect the side wall portion 40c and the second upper wall portion 40d.

[0026] 2 and 3, the above-mentioned configuration allows the engaging portion 41 to clamp the connecting plate 63 of the hanging member 50 from above. Also, the engaging portion 41 can be removed from the connecting plate 63 upward. This allows the work scaffold 10 to be easily and stably assembled to the hanging member 50 hung on the beam B2.

[0027] <Hanging parts> The hanging member 50 is a member that is hung in a state where it is hooked on the frame B (beam B2) and supports the work scaffold 10, as shown in FIGS. The hanging member 50 comprises a hanging body 60 which is long in the vertical direction, a connecting plate 63 which is provided in the lower part of the hanging body 60 and engages with the engaging member 40, and a hanging member 70 which extends horizontally from the upper end of the hanging body 60 and is hung on the beam B2. Furthermore, the hanging members 50 are each provided on the hanging body 60 and include a switching member 80 for switching the position of the hook member 70 and an operating lever 90 for operating the switching member 80. The hanging member 50 corresponds to an "engaged member" that is attached to the body B (beam B2).

[0028] As shown in Figures 1 to 4, the hanging body 60 is a hanging ladder for workers to climb to higher places, and has a first support pillar 61 and a second support pillar 62 that are long in the vertical direction and are arranged at a predetermined interval, and a number of connecting plates 63 that are arranged at intervals in the vertical direction and connect the first support pillar 61 and the second support pillar 62. Of the multiple connecting plates 63, the connecting plate 63 located at the lower portion of the hanging body 60 corresponds to the “engaged portion” and is detachably engaged by the engaging member 40. In addition, the hanging body 60 does not have to be limited to a hanging ladder, but may be, for example, a member that is long in the vertical direction and has an engaged part that can engage with the engaging member 40, and a handle part that can be grasped by the worker.

[0029] As shown in FIGS. 4 to 7B, the hook member 70 is a member that is detachably hooked to the beam B2, and is disposed so as to cover the beam B2 from above. The latch member 70 is switchably moved between a "non-latching position" shown in FIGS. 6A and 6B and a "latching position" shown in FIGS. 7A and 7B. When the latch member 70 is in the "latch position", the latch hook 73 crosses the beam B2 and is latched to the upper flange B2a of the beam B2 from the side.

[0030] Specifically, as shown in Figures 4 and 5, the hanging member 70 has a fixed member 71 extending horizontally from the upper end of the hanging body 60, a movable member 72 supported so as to be slidable relative to the fixed member 71 and extending further from the fixed member 71, and a hanging hook 73 provided at the tip of the movable member 72 and hooked onto the beam B2. The hook member 70 further has a pair of contact members 74 that protrude horizontally from the upper end of the hanging body 60 and are positioned slightly below the fixing member 71 . The contact member 74 is a plate-shaped member that comes into contact with the upper surface of the lower flange B2b of the beam B2. The contact member 74 supports the hanging member 50 from below on the beam B2 (lower flange B2b).

[0031] The fixing member 71 has left and right fixing pipes 71a arranged at an interval in the width direction of the hanging member 50 and extending horizontally, and a connecting pipe 71b connecting the left and right fixing pipes 71a. The left and right fixed pipes 71a are rectangular tubular members (rectangular pipes), and a movable member 72 (movable pipe 72a) is inserted inside the fixed pipes 71a. A switching member 80 (switching body 81) is attached to the center of the connecting pipe 71b.

[0032] The movable member 72 has left and right movable pipes 72a arranged at intervals in the width direction of the hanging member 50 and extending horizontally, a connecting pipe 72b connecting the front ends of the left and right movable pipes 72a, and a stopper 72c attached to the front end of the movable pipe 72a. The movable pipe 72a is a square tubular member (square pipe) that is inserted into the fixed pipe 71a and penetrates the fixed pipe 71a. The biasing spring 82 (the other end 82b) of the switching member 80 is fixed to the center of the connecting pipe 72b. The stopper 72c is a member that abuts against the fixed member 71 to restrict the movement of the movable member 72 when the movable member 72 moves from the "non-latching position" to the "latching position". A stopper may be separately attached to the rear end of the movable pipe 72a so that the stopper can abut against the fixed member 71 and restrict the movement of the movable member 72 when the movable member 72 moves from the "latching position" to the "non-latching position".

[0033] The hook 73 is a hook portion (hook) that protrudes downward from the tip of the movable member 72 (movable pipe 72a). The hook 73 moves together with the movable member 72 and is hooked to the upper flange B2a of the beam B2.

[0034] In the above configuration, as shown in FIGS. 7A and 7B, when the latch member 70 is in the "latching position", it is latched to the beam B2 (upper flange B2a). At this time, the suspension body 60 is supported laterally by the upper flange B2a and the lower flange B2b, the fixing member 71 and the stopper 72c are supported from below by the upper flange B2a, and the abutment member 74 is supported from below by the lower flange B2b. Therefore, the hanging member 50 can be firmly hooked to the beam B2, and the hanging member 50 can be suspended.

[0035] In the above configuration, when the latch member 70 is in the "latching position", the movable member 72 (movable pipe 72a) projects so as to overhang behind the hanging member 50, as shown in FIG. 7B. This makes it easier for an operator to visually confirm that the latch member 70 is in the "latching position."

[0036] As shown in Figures 4 to 7B, the switching member 80 is provided at the upper end of the hanging body 60 and switches the hanging member 70 between a "hanging position (hanging state)" and a "non-hanging position (non-hanging state)" with respect to the beam B2. The switching member 80 comprises a switching body 81 fixed to the fixed member 71, a biasing spring 82 that connects the switching body 81 and the movable member 72 and biases the movable member 72, and a connecting wire 85 that connects the switching body 81 (biasing spring 82) and the operating lever 90.

[0037] The biasing spring 82 is a biasing member that biases the movable member 72 relative to the fixed member 71 in a manner that allows the movable member 72 to expand and contract, and is, for example, a compression spring. The switching member 80 switches the movable member 72 by means of a biasing spring 82 between a "non-latching position" shown in Figures 6A and 6B and a "latching position" shown in Figures 7A and 7B. The biasing spring 82 normally biases the movable member 72 away from the fixed member 71. That is, the biasing spring 82 biases the movable member 72 to the "unlatched position."

[0038] As shown in FIGS. 4 to 9, the connection wire 85 extends vertically along the hanging member 50 (hanging body 60). Specifically, one end 85a of the connection wire 85 is fixed to the switching body 81 (the biasing spring 82). The connection wire 85 extends downward along the outer surface of the hanging body 60, and the other end 85b of the connection wire 85 is attached to the operating lever 90. A plate-shaped locking member 86 that can be locked to the operating lever 90 (locking hole 94) is fixed to the other end 85b.

[0039] 5 to 9, in the above configuration, the switching member 80 can switch the movable member 72 from the "non-latching position" to the "latching position" by the operating lever 90 and the connection wire 85 pulling the urging spring 82 (the urging spring 82 contracts), and the movable member 72 is urged against the urging spring 82. By switching the hook member 70 (movable member 72) to the "latching position", the hanging member 50 is hooked to the beam B2. When setting the hanging member 50 on the beam B2, the hanging member 70 is easily set on the beam B2 by disposing the hanging member 70 in the "non-hanging position". In other words, it becomes easy to set the hanging hook 73 on the outside of the beam B2 beyond the beam B2 (upper flange B2a).

[0040] The operating lever 90 is attached to the outer surface of the lower end of the hanging body 60 as shown in FIGS. 8 and 9, and is an operating member for operating the switching member 80. The operating lever 90 is attached to the hanging body 60 so as to be switchable between a "normal position" shown in FIG. 8 and an "operating position" shown in FIG.

[0041] The operating lever 90 has a plate-shaped lever body 91 extending along the outer surface of the hanging body 60, a rotating shaft 92 that rotatably attaches the lever body 91 to the hanging body 60, and a rotating plate 93 that is attached to the hanging body 60 and positioned below the lever body 91. The lever body 91 has a U-shaped cross section. Therefore, when the lever body 91 is in the "operating position" shown in FIG. A plurality of locking holes 94 are formed at intervals along the outer surface of the lever body 91 .

[0042] The operating lever 90 is connected to the other end 85 b of the connection wire 85 by the locking projection 86 a of the locking member 86 being locked in the locking hole 94 . When the operating lever 90 is in the "normal position" shown in Figure 8, the operating lever 90 does not pull (or barely pulls) the connecting wire 85, and the latch member 70 (movable member 72) is disposed in the "non-latching position". On the other hand, when the operating lever 90 is in the "operating position" shown in Fig. 9, the operating lever 90 pulls the connecting wire 85. As a result, the latch member 70 (the movable member 72) is moved from the "unlatched position" shown in Fig. 6A to the "latched position" shown in Fig. 7A. With the above configuration, a worker can easily perform an operation to hang the hanging member 50 on the beam B2. For example, a worker can operate the operating lever 90 on the floor of a building.

[0043] In the above configuration, as shown in Figures 8 and 9, the switching member 80 can adjust the biasing force of the biasing spring 82 when the operating lever 90 is switched to the "operating position" by changing the locking position of the locking member 86. Therefore, the hanging member 50 can be securely hung in accordance with the attributes (width, length, shape) of the beam B2. That is, the hanging position of the hanging member 50 and the holding force when hung can be adjusted.

[0044] 9, when the lever body 91 is in the "operating position", the rotating plate 93 can lock the lever body 91. In other words, the rotating plate 93 rotates between the "locked position" and the "unlocked position". By doing so, the operating lever 90 can be fixed in the "operating position" shown in FIG.

[0045] The above-mentioned work scaffold unit 1 makes it possible to suitably carry out high-altitude work on the framework B (e.g., beam B2) of a building. Specifically, it can be easily installed around the beam B2, and can be installed stably.

[0046] <Second embodiment of hanging member> Next, a hanging member 150 according to a second embodiment will be described with reference to FIGS. 10A to 11B. It should be noted that the description overlapping with that of the hanging member 50 described above will be omitted.

[0047] The hanging member 150 includes a hanging body 160, a latch member 170, a switching member 180, and an operating lever 190.

[0048] The hanging member 170 has a fixed member 171 fixed to the upper end of the hanging body 160 and extending in the width direction of the hanging member 150, left and right movable members 172 attached to both ends of the fixed member 171 via pivot shafts 171a, and a hanging hook 173 provided at the tip of the movable member 172. The movable member 172 is switchably moved between a "non-latching position" shown in FIGS. 10A and 10B and a "latching position" shown in FIGS. 11A and 11B. When in the "non-latching position" shown in Fig. 10A, the left and right movable members 172 extend substantially parallel to each other. When in the "latching position" shown in Fig. 11A, the left and right movable members 172 rotate outwardly about the pivot shafts 171a and are disposed at positions spaced apart from each other. In other words, the left and right movable members 172 rotate like double doors about the left and right pivot shafts 171a. The left and right movable members 172 are biased by springs 171b to the "non-latching position" shown in FIGS. 10A and 10B.

[0049] The switching member 180 is provided at the upper end of the hanging body 160, and switches the hook member 170 between a "hook position" and a "non-hook position" with respect to the beam B2. The switching member 80 includes a switching body 181 arranged between the left and right movable members 172, a biasing spring 182 that connects the switching body 181 and the fixed member 171 and biases the switching body 181 outward, and a connecting wire 185 that connects the switching body 181 (biasing spring 182) and the operating lever 90.

[0050] The biasing spring 182 is a biasing member that biases the switching body 181 against the fixed member 171 in an expandable and contractible manner, and is, for example, a compression spring. The switching member 180 switches the left and right movable members 172 by means of a biasing spring 182 between a "non-latching position" shown in FIGS. 10A and 10B and a "latching position" shown in FIGS. 11A and 11B.

[0051] In the above configuration, as shown in FIGS. 10A to 11B, the switching member 180 can switch the movable member 172 from the “non-latching position” to the “latching position” by pulling the biasing spring 182 (the biasing spring 182 contracts) by the operating lever 190 and the connection wire 185, and pulling the switching body 181 against the biasing spring 182. Specifically, the switching body 181 comes into contact with the left and right movable members 172 and moves so as to push the left and right movable members 172 apart. When the latch member 170 (movable member 172) is switched to the "latching position", the left and right latch hooks 173 are latched to the upper flange B2a of the beam B2.

[0052] Even with the above configuration, the hook member 170 can be easily hooked to the beam B2. That is, the hanging member 150 can be easily and stably hung from the beam B2.

[0053] <Other embodiments> In the above embodiment, as shown in FIG. 1, the work scaffold unit 1 is hung on the beam B2 of the framework B of the building, but this is not particularly limited. For example, the work scaffold unit 1 may be attached to the pillar B1, or may be attached to a part of the framework other than the pillar B1 and the beam B2.

[0054] In the above embodiment, as shown in FIG. 1, one work scaffold unit 1 is installed, but this is not particularly limited, and a plurality of work scaffold units 1 may be installed. For example, a plurality of work scaffold units 1 may be installed side by side. In that case, it is advisable to lay connecting plates (stepping boards) on the scaffold members 30 so as to connect the scaffold members 30 together. In this way, a work scaffold with a continuous work floor can be formed.

[0055] In the above embodiment, as shown in Fig. 1, the work scaffold unit 1 is configured to be separable into the work scaffold 10 and the hanging member 50, but this is not particularly limited. In other words, the work scaffold 10 and the hanging member 50 may be integrated. In that case, the operating lever 90 may be attached to the work platform 10.

[0056] In the above embodiment, as shown in FIG. 1, the work scaffold 10 engages with an engaged portion (connecting plate 63) provided on the hanging member 50 suspended from the beam B2, but this is not particularly limited and the work scaffold 10 may engage with an engaged portion provided on the main body B (various parts of the main body B). For example, the work scaffold 10 may be engaged with a pillar bracket provided on the pillar B1, or may be engaged with a column ladder (ladder bracket) provided on a column pillar.

[0057] In the above embodiment, as shown in FIG. 1, the ladder member 20 has two legs, that is, the first support post 21 and the second support post 22, but this is not particularly limited. The ladder member 20 may be configured with one leg or three legs.

[0058] In the above embodiment, the working scaffold and the working scaffold unit according to the present invention have been mainly described. However, the above embodiment is merely an example for facilitating understanding of the present invention, and does not limit the present invention. The present invention can be modified or improved without departing from the spirit of the present invention, and the present invention naturally includes equivalents thereof. [Explanation of symbols]

[0059] B. Structure (building structure) B1 Column (corner column) B2 beam (large beam, small beam) B2a Top flange B2b Bottom flange B3 Floor panel (floor material) B4 Connecting bolt B5 Nut 1 Working scaffold unit 10 Working scaffolding 20 Ladder parts 21 1st pillar 22 Second pillar 23 Connecting plate 24 Reinforcement plate 25 Second reinforcing plate 30 Scaffolding materials 30a Proximal end 30b Extension end 35 Handrail parts 40 Engagement member 40a Upper wall 40b Bottom wall 40c side wall part 40d 2nd upper wall section 40e Second side wall portion 41 Engagement part 42 First reinforcement part 43 Second reinforcement section 50 Hanging member (engaged member) 60 Hanging body 61 1st pillar 62 Second pillar 63 Connecting plate (engaged part) 70 Hooking member 71 Fixing member 71a Fixed pipe 71b Connecting pipe 72 Movable parts 72a Movable pipe 72b Connecting pipe 72c Stopper 73 Hanging hook (hanging part) 74 Contact member 80 Switching parts 81 Switching body 82 Spring 82a One end 82b Other end 85 Connecting Wires 85a One end 85b Other end 86 Locking member 86a Locking protrusion 90 Operating lever (operating member) 91 Lever body 92 rotation axis 93 Rotating Plate 94 Locking hole 150 Hanging member 160 Hanging body 170 Hooking member 171 Fixing member 171a Rotating shaft 171b Spring 172 Movable parts 173 Hanging hook (hanging part) 180 Switching parts 181 Switching Body 182 Spring 182a One end 182b Other end 185 Connecting Wires 190 Operating lever (operating member)

Claims

1. A work scaffold for performing work at height on the structure of a building, A ladder member that extends long in the vertical direction and allows a worker to climb to a high place; A scaffold member attached to an upper end of the ladder member and extending horizontally from the upper end of the ladder member to provide a foothold for the worker; A work scaffolding characterized by comprising an engaging member provided on the outer edge of the scaffolding member and releasably engaging with an engaged portion provided on the main body, or releasably engaging with an engaged member attached to the main body.

2. The work scaffold is attached to a hanging member as the engaged member attached to a beam of the building, and is used for performing the high-altitude work on or around the beam, The ladder member is installed on a floor member of the building, The engaging member is The scaffolding member is provided at the other end of the outer edge of the scaffolding member opposite the one end of the ladder member, and is arranged to protrude from the other end of the scaffolding member, The engaging portion is detachably engaged with the engaging portion provided on the hanging member in the up-down direction, The work scaffold according to claim 1, characterized in that, when the work scaffold engages with the engaged portion, the engaged portion is clamped from above.

3. A work scaffold unit comprising the work scaffold according to claim 1 or 2 and a hanging member as the engaged member attached to a beam of the building, The hanging member is A hanging body that is long in the vertical direction, a hook member provided at an upper end of the hanging body, extending horizontally from the upper end of the hanging body, and detachably hooked to the beam; A work scaffold unit comprising: an engaged portion provided on a lower portion of the hanging body and adapted to engage with the engaging member of the work scaffold.

4. The hanging member includes a switching member that is provided at an upper end of the hanging body and switches the hanging member between a hooked state and a non-hooked state with respect to the beam, The latch member is disposed so as to cover the beam from above, The work scaffold unit according to claim 3, characterized in that when the switching member switches the hanging member from the non-hanging state to the hanging state, the hanging portion of the hanging member is hung from the side over the beam.

5. The latch member is a fixing member fixed to an upper end of the hanging body and extending horizontally from the upper end of the hanging body; a movable member slidably supported relative to the fixed member and extending horizontally from the fixed member; a hook portion provided at a tip end of the movable member and hooked to the beam, The work scaffold unit described in claim 4, characterized in that the switching member has a spring attached to the fixed member and biases the movable member to be extendable and retractable relative to the fixed member, and the movable member is switched between a latching position and a non-latching position by the biasing spring.

6. An operating member provided on the hanging body or the work scaffold for operating the switching member; a connection wire that connects the biasing spring and the operating member and pulls the biasing spring when the operating member is operated, The work scaffold unit described in claim 5, characterized in that the switching member switches the movable member from the non-latching position to the latching position by the operating member and the connecting wire pulling the biasing spring and biasing the movable member by the biasing spring.

7. The operating member is attached to the suspension body so as to be switchable between a normal position and an operating position for pulling the connecting wire, A plurality of locking holes are formed on an outer surface of the operating member at intervals along the outer surface of the operating member, a locking member that can be locked in the locking hole is attached to one end of the connection wire on the side of the operation member, The work scaffold unit according to claim 6, characterized in that the switching member makes it possible to adjust the biasing force of the biasing spring when the operating member is switched to the operating position, depending on the locking position of the locking member.

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