JP6962837B2 - Work scaffolding - Google Patents

Description

The present invention relates to a work scaffold.

Patent Document 1 discloses a traveling scaffold for constructing a side wall portion of a building at a construction site where it is difficult to construct a scaffold on the entire surface. A plurality of arm fittings are fixed to the H steel fixed to the building, and the guide rails are supported by the arm fittings along the building. The roller engaged with the guide rail and the roller support metal fitting are fixed to the building frame of the scaffolding block, and the scaffolding block can be moved to any place on the side wall along the guide rail.

Japanese Unexamined Patent Publication No. 2000-234438

However, in the case of the above-mentioned prior art, it is necessary to provide a member for connecting the scaffolding on the building side, which is the work object.

By the way, in the assembly of the building units constituting the so-called unit building, after assembling the skeleton of the building unit in the factory, the outer wall, the inner wall, the equipment and the like are attached to each building unit. Here, when an attempt is made to apply the traveling moving scaffolding according to the above-mentioned prior art to a building unit, a member for connecting the scaffolding is provided for each building unit to be worked on, resulting in a complicated configuration.

In addition, in the assembly work of the building unit, the building unit may be moved to another place in the factory, but when the scaffolding is connected to the building unit by engaging the guide rail and the roller as in the prior art. It is structurally difficult to move the scaffolding while it is connected to the building unit even if the building unit is movable.

In consideration of the above facts, the present invention can be connected to the building unit with a simple configuration without requiring an additional member for connecting the work scaffolding on the building unit side which is the work object, and can be connected to the building. The purpose is to obtain a work scaffold that can be moved while being connected to the unit.

The work scaffold according to the first aspect has casters on the lower surface and is provided on the side surface of the scaffold body and the scaffold body on which an operator can ride, and is formed on the side surface of the skeleton frame of the building unit. The scaffolding body is provided with a connecting portion for connecting the scaffolding body to the building unit by being inserted into and engaged with the peripheral edge portion of the hole.

According to the work scaffold according to the first aspect, the connecting portion is inserted into the hole formed on the side surface of the skeleton frame of the building unit, and the scaffold body is made into the building unit by being engaged with the peripheral portion of the hole. Be connected. Therefore, it is possible to use the holes formed in the building unit for other purposes such as wiring for connecting the work scaffolding, and it is possible to use a simple configuration without requiring an additional member on the building unit side. Work scaffolding can be connected to building units.

Further, since the casters are attached to the lower surface of the scaffolding body, the working scaffolding can be moved. Here, since the connecting portion is engaged with the hole formed on the side surface of the skeleton frame of the building unit, the work scaffold is supported by the skeleton frame of the building unit, and the guide rail and the roller are engaged with each other. The work scaffolding is more firmly connected to the building unit than when the scaffolding is connected to the building unit. Therefore, it is possible to move the building unit with the work scaffolding connected.

The work scaffold according to the second aspect is the work scaffold according to the first aspect, and the hole is formed on the side surface of the floor girder of the building unit.

According to the working scaffold according to the second aspect, the hole of the building unit into which the connecting portion is inserted and engaged is formed on the side surface of the floor girder. The work scaffolding is firmly connected to the building unit by engaging the connecting portion with the hole formed in the floor girder, which is the main skeleton frame constituting the building unit and has high strength.

The work scaffold according to the third aspect is the work scaffold according to the first or second aspect. When the engaging portion is inserted into the hole, the engaging claw is displaced inward in the radial direction against the urging force and passes through the hole. Later, the engaging claw is returned to the original position by the urging force, so that the engaging claw is engaged with the peripheral portion.

According to the work scaffold according to the third aspect, the connecting portion includes an engaging portion having an engaging claw that protrudes radially outward of the main body portion by an urging force. When inserted into the hole formed on the side surface of the frame of the building unit, the engaging claw is displaced inward in the radial direction against the urging force, and after passing through the hole, the engaging claw is displaced by the urging force. By returning to the original position, the engaging portion is engaged with the peripheral portion of the hole. Therefore, it is possible to connect the work scaffolding to the building unit only by inserting the connecting portion into the hole of the floor girder.

In the work scaffold according to the third aspect, at least a part of the work scaffold according to the fourth aspect is housed in the scaffold main body and arranged horizontally, and the connecting portion from the side opposite to the building unit. A rod-shaped member that can be inserted into the main body of the main body is provided, and the rod-shaped member advances toward the building unit and pushes the engaging portion to push the engaging claw against the urging force of the main body. Further provided is an disengagement portion for disengaging inward in the radial direction to disengage the engagement portion between the engaging portion and the peripheral edge portion.

According to the work scaffold according to the fourth aspect, the rod-shaped member constituting the disengagement portion can be inserted into the inside of the connecting portion from the side opposite to the building unit. When this rod-shaped member advances toward the building unit and the engaging portion is pushed, the engaging claw is displaced inward in the radial direction against the urging force, and the engaging portion and the peripheral edge of the hole Is released from the engaged state. Therefore, the working scaffolding can be removed from the building unit by releasing the engagement state between the engaging portion and the peripheral portion of the hole only by pushing the disengaging portion. In addition, since the work scaffolding can be easily attached to and detached from the building unit, it is easy to remove the work scaffolding and replace it with another building unit after the work in one building unit is completed. Is possible.

In addition, the work scaffolding can be removed from the building unit by operating the disengagement portion to move forward from the side opposite to the building unit. For this reason, as compared with the case where the disengagement portion is provided at the connecting portion between the building unit and the work scaffold, the building unit and the work scaffold can be connected in a close state, which improves workability. , The rotational moment applied to the connecting portion when moving in the connected state can be suppressed, and the deformation, breakage, etc. of the connecting portion can be suppressed.

As described above, the work scaffold according to the present invention is connected to the building unit by a simple configuration without requiring an additional member for connecting the work scaffold on the building unit side which is the work object. In addition to being able to move, it has the excellent effect of being able to move while being connected to the building unit.

It is a perspective view which shows the work scaffolding which concerns on this embodiment, and the building unit which connects the work scaffolding. It is an enlarged cross-sectional view cut along line 2-2 of FIG. 1, and is also an enlarged cross-sectional view showing a main part in a state where the work scaffold according to the present embodiment is connected to a building unit. (A) is a perspective view showing the frame of the scaffold body, and (B) is a perspective view showing the appearance thereof. (A) is a vertical sectional view showing a connecting portion in an initial state, (B) is a vertical sectional view showing a connecting portion when inserted into a hole of a floor girder, and (C) is an engaging portion. It is a vertical cross-sectional view which shows the connection part in the released state. (A) is a perspective view showing a lock lever, and (B) is an enlarged perspective view of a main body portion of a connecting portion shown by cutting out a part. (A) is an enlarged cross-sectional view showing the operation of the lock lever from the initial state to the engaged state through the insertion time, and (B) is the enlarged cross-sectional view from the engaged state to the disengaged state. It is an enlarged cross-sectional view which shows the operation of the lock lever and the disengagement part. It is a schematic perspective view which shows the scaffolding for work which concerns on the modification of this embodiment.

Hereinafter, embodiments of the work scaffold 10 according to the present invention will be described with reference to FIGS. 1 to 7.

<Overall configuration>
FIG. 1 shows a perspective view of a work scaffold 10 according to the present embodiment and a building unit 12 to which the work scaffold 10 is connected. The building unit 12 is mounted on a pedestal 16 configured to be movable by the casters 14.

The building unit 12 is a rectangular parallelepiped box-shaped unit, and includes four pillars 18 erected at four corners, a ceiling panel 20 that connects the upper ends of these pillars 18 to form a unit ceiling, and a lower end of the pillar 18. The skeleton is composed of floor panels 22 that connect each other to form a unit floor.

The ceiling panel 20 has two types of long and short ceiling beams 24 and 26 made of channel steel connecting the upper ends of the pillars 18, and a plurality of small ceiling beams arranged at predetermined intervals between the ceiling beams 24 on the long side. A beam 28 and a ceiling surface material 30 attached to the lower surface side of the ceiling girders 24 and 26 and the ceiling girder 28 via a field edge (not shown) are provided.

The floor panel 22 is configured in the same manner as the ceiling panel 20, and is between two types of long and short floor girders 32 and 34 made of channel steel connecting the lower ends of the pillars 18 and the floor girder 32 on the long side. A floor beam (not shown) and a floor member 36 laid on the floor beams 32, 34 and the upper surface of the floor beam are provided at predetermined intervals. Further, holes 38A for wiring, piping, etc. are formed on the side surface 38 of the floor girder 32 on the long side side as the "frame frame". In the present embodiment, two holes 38A having a diameter of 65 mm are provided, but the diameter may be another value, and the number of holes 38A may be three or more.

The column 18 is composed of steel pipe columns having a square cross section, and square plates are fitted at the upper and lower ends, and a connecting plate (not shown) for connecting to other building units can be attached. Has been done.

An inner wall panel 40 and a partition 42 are attached to the building unit 12 according to the present embodiment as constituent members of the building unit 12 to be attached after the assembly work of the skeleton. The building unit 12 is provided with components such as stairs and kitchen equipment according to the purpose of the building unit 12.

The building unit 12 is mounted on the gantry 16 via the spacer 44, and the towing portion 46 rotatably attached to the gantry 16 is connected to a moving vehicle (not shown) to be towed. It is configured to be mobile.

The work scaffolding 10 is provided on a scaffolding body 48 on which an operator can ride, casters 50 attached to the lower surface of the scaffolding body 48, and a side member 52 on the building unit 12 side of the scaffolding body 48. A connecting portion 54 that connects the scaffolding body 48 to the building unit 12 by being inserted into the hole 38A formed in the side surface 38 of the floor girder 32 on the long side side of the 12 and engaged with the peripheral edge portion 38B of the hole 38A. It is configured to include an disengagement portion 56 for disengaging the coupling portion 54 from the building unit 12. The scaffolding body 48 further includes a step portion 60 provided on the opposite side of the building unit 12 for the operator to climb up and down the upper surface member 58.

<Structure of main parts of this embodiment>
Next, the configuration of the main part of the work scaffold 10 according to the present embodiment will be described in detail.

FIG. 2 shows an enlarged cross-sectional view of a main part in a state where the work scaffolding 10 according to the present embodiment is connected to the building unit 12. FIG. 2 is an enlarged cross-sectional view cut along line 2-2 of FIG.

In the connected state in which the work scaffold 10 is connected to the building unit 12, the height H1 of the upper surface of the upper surface member 58 of the scaffold body 48 and the floor of the building unit 12 mounted on the gantry 16 via the spacer 44. The difference from the height H2 of the upper surface of the face material 36 is set so that the operator can easily move from the upper surface material 58 of the scaffolding body 48 to the building unit 12 side. In the present embodiment, the height H1 and the height H2 are set to be substantially the same, but there may be a step that allows the operator to move.

The scaffolding body 48 is composed of a metal frame 61 as a skeleton. Specifically, as shown in FIG. 3A, the upper frame supporting the upper surface member 58 of the scaffolding body 48 is formed in a rectangular shape in a plan view, and two scaffolds arranged on the long side side. 62 is connected to each other at the end and the center via the steel 64. The lower frame of the skeleton 61 is also formed in a rectangular shape in a plan view like the upper frame, but one steel material 66 in the longitudinal direction is further added to the lower frame to form an adjacent steel material 62. It is connected via a steel material 68 at the end and the center. These additional steel materials 66, 68 are for supporting the step portion 60. The upper frame and the lower frame are connected in the height direction via a steel material 70. A caster 50 is attached to the bottom surface of the steel material 64 forming the lower frame of the frame 61 and the steel material 68 forming the step portion 60 (see FIGS. 2 and 3B).

As shown in FIG. 3B, the upper portion and the side portion of the frame 61 are covered with the wooden upper surface member 58, the side surface members 52, 72, 76, 78, and the upper surface member 74 and the side surface member 75 of the step portion 60. (See Fig. 3 (B)). The side member 52 is formed with a support hole 52A through which the connecting portion 54 is penetrated and supported. Similarly, the side member 72 is formed with a support hole 72A through which the disengagement portion 56 is penetrated and supported. In the example shown in FIG. 3B, both ends of the scaffolding body 48 in the longitudinal direction are covered with the side members 76 and 78, but the scaffolding body 48 does not necessarily have to be covered. Further, although the lower side of the scaffolding body 48 is not covered with a wooden board, a wooden board may be attached on the lower frame to serve as the bottom surface. In drawings other than those shown in FIGS. 2 and 3A, the skeleton 61 is not shown.

Returning to FIG. 2, the connecting portion 54 has a cylindrical main body portion 80 that penetrates the support hole 52A of the side member 52 facing the building unit 12 in a state of being connected to the building unit 12, and the initial state before connection and the initial state before connection. It is configured to include a lock lever 84 (see FIGS. 4 and 5) as an "engagement portion" provided with an engagement claw 82 projecting radially outward of the main body portion 80 in an engaged state after the connection is completed. ing. The main body 80 is fixed to the side member 52 by a fixing member (not shown). As an example, an annular fixing member may be provided along the outer circumference of the connecting portion 54, and this fixing member may be fixed to the side surface member 52 with a screw or the like.

In the connected state shown in FIG. 2, the engaging claw 82 of the work scaffold 10 is engaged with the peripheral edge portion 38B of the hole 38A formed on the side surface 38 of the floor girder 32 on the long side side of the building unit 12. ing. The main body 80 is provided with an annular flange 86 that projects radially outward along the outer circumference thereof and is configured to be located on the outdoor side of the side surface 38 of the floor girder 32 in an engaged state. (See FIG. 5B). This prevents the connecting portion 54 from advancing further toward the work scaffold 10 side than the position in the engaged state.

The disengagement portion 56 is configured as a rod-shaped member 88 that horizontally penetrates the scaffolding body 48 in the lateral direction thereof. Specifically, a conical portion 88A is formed at one end of the rod-shaped member 88 on the building unit 12 side (see FIG. 4C), and the building unit 12 is inside the main body 80 of the connecting portion 54. It is inserted from the other side. The other end of the rod-shaped member 88 projects outward from the support hole 72A of the side member 72 on the side opposite to the building unit 12 of the scaffolding body 48. The rod-shaped member 88 is not fixed to the side member 72, but is slidably inserted into the support hole 72A. A flange 90 is provided at a position inside the side surface member 72 of the rod-shaped member 88. As a result, the rod-shaped member 88 is prevented from falling off from the side member 72.

4 (A) to 4 (C) show vertical cross-sectional views of the connecting portion 54 of the work scaffold 10 along the longitudinal direction. The main body 80 of the connecting portion 54 is formed in a cylindrical shape having a conical tip, and a pair of lock levers 84 are arranged therein.

As shown in FIG. 5A, the lock lever 84 is formed so that the cross-sectional shape cut in the longitudinal direction is L-shaped, and the lever body 92 forming the long side of the L-shape and the lever. The main body 92 includes an extending portion 94 extending vertically from one end in the longitudinal direction and forming an L-shaped short side, and an engaging claw 82 provided at the tip of the extending portion 94.

The lever body 92 is provided with a spring 96 at the other end in the longitudinal direction substantially parallel to the extending portion 94, and is oriented toward penetrating an L-shaped cross section on a side surface closer to the center than the spring 96. A pair of pins 98 are formed. The pin 98 is a through hole 100A formed in a pair of support plates 100 that protrude inward in the radial direction from the inner wall of the main body 80 of the connecting portion 54 and are arranged so as to sandwich the lock lever 84 (FIG. 5 (B). ) Is inserted and becomes the center of rotation of the lock lever 84.

The engaging claw 82 extends from the engaging surface 82A formed by extending the surface of the extending portion 94 facing the spring 96 and the end portion of the engaging surface 82A to the end portion of the extending portion 94. It is configured to include an inclined surface 82B.

Returning to FIGS. 4 (A) to 4 (C), the initial state before the work scaffold 10 is connected to the building unit 12, the state when it is connected, and the disengagement state in which the engagement state is released are released. The configuration of the connecting portion in each state of the state will be described.

FIG. 4A shows a vertical cross-sectional view of the connecting portion 54 in the initial state before being connected to the building unit 12 along the longitudinal direction. In the initial state, the lever main body 92 of the lock lever 84 extends along the longitudinal direction of the main body 80, and the extending portion 94 extends along the radial direction of the main body 80. The engaging claw 82 protrudes outward in the radial direction of the main body 80 by the urging force of the spring 96 from the hole 102 (see FIG. 5B) provided in the main body 80.

FIG. 4B shows a vertical cross section along the longitudinal direction of the connecting portion 54 when the working scaffold 10 is inserted into the hole 38A of the floor girder 32 of the building unit 12 by advancing in the direction of the arrow E. The figure is shown. The inclined surface 82B of the engaging claw 82 (see FIG. 5A) is pressed against the peripheral edge 38B of the hole 38A of the floor girder 32, so that the engaging claw 82 of the lock lever 84 is attached with the spring 96. It is rotationally displaced inward in the radial direction (arrow F direction) of the main body 80 around the pin 98 against the force. After the connecting portion 54 further advances in the direction of the arrow E and passes through the hole 38A of the floor girder 32, the lock lever 84 is rotated in the direction opposite to the arrow F by the urging force of the spring 96, and is in the same position as the initial state ( Return to FIG. 4 (A)). As a result, the engaging claw 82 is engaged with the peripheral edge portion 38B of 38A of the floor girder 32. The peripheral edge portion 38B of the floor girder 32 in the engaged state is shown by a chain double-dashed line in FIG. 4 (A).

FIG. 4C shows a vertical cross-sectional view of the connecting portion 54 in the disengaged state along the longitudinal direction. The rod-shaped member 88 of the disengagement portion 56 advances toward the building unit 12 side (direction indicated by the arrow G), and the outer peripheral surface of the conical portion 88A at the tip of the rod-shaped member 88 is the end portion of the lever body 92 of the lock lever 84. Is pressed outward in the radial direction against the urging force of the spring 96. As a result, the lock lever 84 is rotationally displaced from the engaged position in the direction indicated by the arrow F about the pin 98, and the engaging claw 82 resists the urging force of the spring 96 to form the main body 80. The engagement state with the peripheral edge portion 38B is released by being displaced inward in the radial direction. By moving the work scaffold 10 away from the building unit 12 in this state, the work scaffold 10 can be removed from the building unit 12. In addition, at the time of insertion (see FIG. 4B) and in the disengaged state (see FIG. 4C), the external force for rotating the lock lever 84 is applied to the peripheral edge 38B of the floor girder 32 at the time of insertion. In the disengaged state, the pressure is different from that of the rod-shaped member 88, and the force points are also different, but the rotational displacement of the lock lever 84 is almost the same. The operation of the lock lever 84 at the time of insertion and disengagement will be described later.

(Action / effect)
Next, the procedure for assembling the work scaffold 10 and how to use the work scaffold 10 according to the present embodiment will be described, and the operation and effect of the present embodiment will be described through the explanation.

First, as shown in FIG. 3A, long steel materials 62, 64, 66, 68, and 70 are joined to assemble the frame 61 as the skeleton of the scaffolding body 48. Further, casters 50 are attached to the bottom surfaces of the steel material 64 forming the lower frame of the frame 61 and the steel material 68 forming the step portion 60.

Next, by attaching the wooden board to the frame 61, the upper surface member 58 and the side surface members 52, 72, 76, and 78 are formed. A support hole 52A for arranging the connecting portion 54 is formed in advance in the side member 52, and a support hole 72A for allowing the rod-shaped member 88 to penetrate is formed in advance in the side member 72. Wooden boards are also attached to the upper surface and the side surface of the step portion 60, and the upper surface member 74 and the side surface member 76 are formed.

Next, the rod-shaped member 88 is inserted through the support hole 52A of the side member 52, horizontally penetrates the scaffolding body 48, and is inserted into the support hole 72A. At this time, the rod-shaped member 88 is not fixed to the scaffolding body 48, but is slidably inserted into the support hole 72A. In order to prevent the rod-shaped member 88 from falling off, a flange 90 is provided in advance at a position inside the side member 72 of the rod-shaped member 88.

Next, the tip of the rod-shaped member 88 is inserted inside the main body 80 of the connecting portion 54, and the connecting portion 54 is inserted into the support hole 52A of the side member 52 and fixed. A hole 102 and an annular flange 86 projecting radially outward along the outer circumference are formed in advance in the main body 80 of the connecting portion 54. Further, a pair of support plates 100 are formed in advance inside the main body 80, and a pair of lock levers 84 supported by the support plates 100 are arranged. At this time, the engaging claw 82 is projected from the hole 102 of the main body 80 by the urging force of the spring 96, and the lever main body 92 of the lock lever 84 is substantially parallel to the inner wall of the main body 80. The length and elastic modulus, the position of the pin 98, and the position of the through hole 100A of the support plate 100 are set.

Next, the work scaffold 10 is connected to the building unit 12. First, as shown in FIG. 1, the work scaffolding 10 is arranged so as to face the side surface of the building unit 12 on the girder side. Next, the work scaffold 10 is pushed toward the side surface of the building unit 12, and the connecting portion 54 of the work scaffold 10 is inserted into the hole 38A formed in the side surface 38 of the floor girder 32 of the building unit 12. At this time, when the lock lever 84 of the connecting portion 54 reaches the engaged state from the initial state (see FIG. 4 (A)) through the state at the time of insertion (see FIG. 4 (B)), the work scaffold 10 is moved. It is connected to the building unit 12.

Using FIG. 6A, the operation of the lock lever 84 from the initial state to the engaged state through the insertion time will be supplementarily described below.

In the initial state before insertion, the lock lever 84 is at the position P indicated by the solid line. Similarly, the peripheral portion 38B of the hole 38A of the floor girder 32 is also at the position P indicated by the solid line.

When the work scaffold 10 is pushed toward the side surface of the building unit 12, the connecting portion 54 advances toward the building unit 12 side (direction indicated by the arrow X) and the engaging claw 82 approaches the hole 38A. The inclined surface 82B of the engaging claw 82 advances in a state of being in contact with the peripheral edge portion 38B. As a result, the engaging claw 82 is pressed inward in the radial direction of the main body 80 while resisting the urging force of the spring 96, and gradually moves from the position P to the position Q.

At this time, the lock lever 84 is rotationally displaced in the direction indicated by the arrow F. The inclination angle of the inclined surface 82B and the position of the pin 98 are set so that the rotation of the lock lever 84 is not hindered. Specifically, the radius R1 of the orbit drawn by the upper end of the inclined surface 82B is set to be smaller than the radius R2 of the orbit drawn by the lower end of the inclined surface. When the lock lever 84 moves from the position P to the position Q, the spring 96 contracts (the contracted state is not shown).

When the connecting portion 54 further advances in the direction of the arrow X and the engaging claw 82 passes through the hole 38A, the engaging claw 82 is rotated in the direction opposite to the arrow F by the urging force of the spring 96, and is the same as the initial state. (Indicated by position R). At this time, the engaging surface 82A of the engaging claw 82 abuts on the indoor surface of the peripheral edge 38B of the floor girder 32 and is engaged with the peripheral edge 38B. The flange 86 of the connecting portion 54 is set to be located near the outdoor surface of the peripheral edge portion 38B. As a result, the connecting portion 54 is prevented from further advancing, and the peripheral edge portion 38B of the floor girder 32 is sandwiched between the engaging surface 82A of the engaging claw 82 and the flange 86, further strengthening the engagement. There is.

Next, if necessary, the towing portion 46 (see FIG. 1) of the gantry 16 is connected to the moving vehicle and towed while the work scaffold 10 is connected to the building unit 12. The work scaffolding 10 needs to be moved while being connected to the building unit 12, for example, during work at a predetermined place in the factory with the work scaffolding 10 connected to the building unit 12. Then, when it becomes necessary to surrender the predetermined place for another building unit. If the work scaffolding 10 is still required for work on the building unit 12 when the predetermined place is surrendered to another building unit, the work scaffolding 10 is moved in a state of being connected to the building unit 12.

When the work scaffolding 10 is no longer required for the work on the building unit 12, the engagement release portion 56 is operated to release the engagement state of the lock lever 84, and the work scaffolding 10 is removed.

The operation of the lock lever 84 and the disengagement portion 56 from the engagement state to the disengagement state (see FIG. 4C) will be supplementarily described below with reference to FIG. 6B.

In the engaged state, the lock lever 84 is at the position P indicated by the solid line. At this time, the rod-shaped member 88 of the disengagement portion 56 is at a position P that does not abut on the lock lever 84.

The rod-shaped member 88 advances toward the building unit 12 (direction indicated by the arrow X), and the conical portion 88A is in contact with the end of the lever body 92 of the lock lever 84 against the urging force of the spring 96. When moving forward, the lock lever 84 rotates about the pin 98 in the direction indicated by the arrow F. At this time, when the conical portion 88A advances to the position S, the lock lever 84 also rotates to the corresponding position S. At the position S, the engaging claw 82 is displaced inward in the radial direction of the main body 80 against the urging force of the spring 96, and the engaging state of the floor girder 32 with the peripheral edge 38B is released. In this state, the work scaffolding 10 is moved away from the building unit 12 (the direction indicated by the arrow Y), and the connecting portion 54 is pulled out from the hole 38A of the floor girder 32, whereby the work scaffolding 10 is pulled out from the building unit 12. Can be removed.

As described above, in the present embodiment, the connecting portion 54 is inserted into the hole 38A formed in the side surface 38 of the floor girder 32 of the building unit 12, and is engaged with the peripheral edge portion 38B of the hole 38A, whereby the building unit 12 Is connected to. Therefore, the hole 38A formed in the building unit 12 for other purposes such as wiring can be used for connecting the work scaffolding 10, without requiring an additional member on the building unit 12 side. The work scaffolding 10 can be connected to the building unit 12 with a simple configuration.

Further, since the casters 50 are attached to the lower surface of the scaffolding body 48, the working scaffolding 10 can be moved. In a state where the work scaffold 10 is connected to the building unit 12, the connecting portion 54 is engaged with the hole 38A formed in the side surface 38 of the floor girder 32 and is supported by the skeleton frame of the building unit 12. Therefore, the work scaffold 10 is firmly connected to the building unit 12, and the building unit 12 can be moved in a state where the work scaffold 10 is connected.

Further, in the present embodiment, the hole 38A of the building unit 12 into which the connecting portion 54 is inserted and engaged is formed on the side surface 38 of the floor girder 32. The work scaffolding 10 is firmly connected to the building unit 12 by engaging the connecting portion 54 with the hole 38A formed in the floor girder 32, which is the main skeleton frame constituting the building unit 12 and has high strength. ..

Further, in the present embodiment, when the engaging claw 82 is inserted into the hole 38A formed in the side surface 38 of the floor girder 32 of the building unit 12, the engaging claw 82 opposes the urging force of the spring 96 and the main body 80 of the connecting portion 54. The lock lever 84 is engaged with the peripheral edge portion 38B of the hole 38A by being displaced inward in the radial direction of the hole 38A and returning to the original position by the urging force of the spring 96 after passing through the hole 38A. Therefore, the work scaffolding 10 can be connected to the building unit 12 only by inserting the connecting portion 54 into the hole 38A of the floor girder 32.

Further, in the present embodiment, the rod-shaped member 88 constituting the disengagement portion 56 is configured to be inserted into the connecting portion 54 from the side opposite to the building unit 12. When the rod-shaped member 88 advances toward the building unit 12 and the lever body 92 of the lock lever 84 is pushed, the engaging claw 82 is displaced inward in the radial direction of the body 80 against the urging force of the spring 96. Then, the engagement state between the lock lever 84 and the peripheral edge portion 38B of the hole 38A is released. Therefore, the work scaffolding 10 can be removed from the building unit 12 by releasing the engagement state between the lock lever 84 and the peripheral edge portion 38B of the hole 38A only by pushing the disengagement portion 56. Further, since the work scaffold 10 can be easily attached to and detached from the building unit 12, the work of removing the work scaffold 10 and replacing it with another building unit 12 after the work of one building unit 12 is completed. Can be easily performed.

Further, in the present embodiment, the work scaffolding 10 can be removed from the building unit 12 by operating the disengagement portion 56 to move forward from the side opposite to the building unit 12. Therefore, as compared with the case where the disengagement portion 56 is provided at the connecting portion between the building unit 12 and the working scaffold 10, the building unit 12 and the working scaffold 10 can be connected in a closer state. As a result, workability is increased, and the rotational moment applied to the connecting portion 54 when moving in the connected state can be suppressed, and deformation, breakage, etc. of the connecting portion 54 can be suppressed.

<Modification example>
FIG. 7 shows a schematic perspective view of the work scaffold 10 according to the modified example of the present embodiment. Since the connecting portion 54 has the same configuration as the connecting portion 54 according to the present embodiment described above, description and illustration thereof will be omitted. In the configuration according to the modified example, the two rod-shaped members 112 of the disengagement portion 110 are connected to each other by the connecting member 114 inside the scaffolding body 48, and one operating portion 116 is provided at the central portion of the connecting member 114. It is connected. The operation unit 116 penetrates the support hole 72B of the side member 72 and projects outward, and is configured to be slidable. The connection position of the operation unit 116 to the connection member 114 is set to a position that avoids interference between the operation unit 116 and the steel material 70 arranged at the center of the frame 61 of the scaffolding body 48.

According to the above modification, there is only one operation unit 116 protruding from the side surface member 72 on the side opposite to the building unit 12, and by pushing this operation unit 116, the connecting unit 54 can be connected to the building unit 12. The engaged state can be released. Therefore, even when the distance between the rod-shaped members 112 (the distance between the two holes 38A of the floor girder 32) is so large that one operator cannot operate them at the same time, the operation unit 116 is indicated by an arrow X. It is possible for one person to perform the disengagement work by pushing in the direction of the movement.

In the present embodiment, the engagement state between the engagement claw 82 and the peripheral edge portion 38B is released by pushing the rod-shaped member 88 of the engagement release portions 56 and 110 or the operation portion 116 toward the building yut 12. However, it is not limited to this configuration. For example, a gripping member is provided on a portion of the disengagement portions 56 and 110 that protrudes from the side member 72 of the scaffolding body 48, and the rod-shaped members 88 and 112 are moved into the building unit 12 by an operation of pulling, moving up and down, or rotating the gripping member. The lever body 92 of the lock lever 84 may be pushed forward to release the engagement state between the engaging claw 82 and the peripheral edge portion 38B.

Further, in the present embodiment, two connecting portions 54 and two rod-shaped members 88 are provided, but when there are three or more holes 38A formed on the side surface 38 of the floor girder 32, this is dealt with. Therefore, three or more connecting portions 54 and rod-shaped members 88 may be provided.

10 Scaffolding for work 12 Building unit 32 Floor girder (framework)
38 Side of floor girder (side of skeleton frame)
38A Hole 38B Peripheral part 48 Scaffolding body 50 Caster 54 Connecting part 56 Disengaging part 80 Main body part 82 Engaging claw 84 Lock lever (engaging part)
88 Rod-shaped member 110 Disengagement part 112 Rod-shaped member

Claims (4)

With casters on the underside, the scaffolding body that workers can ride on,
A connecting portion provided on the side surface of the scaffolding body and inserted into a hole formed in the side surface of the skeleton frame of the building unit and engaged with the peripheral edge of the hole to connect the scaffolding body to the building unit. When,
Work scaffolding equipped with. The work scaffold according to claim 1, wherein the hole is formed on a side surface of a floor girder of the building unit. The connecting portion includes a main body portion and an engaging portion having an engaging claw that projects radially outward of the main body portion by an urging force, and the engaging portion engages with the engaging portion when it is inserted into the hole. The joint claw is displaced inward in the radial direction against the urging force, and after passing through the hole, the engaging claw returns to the original position by the urging force and is engaged with the peripheral edge portion. , The work scaffold according to claim 1 or 2. At least a part thereof is housed in the scaffold main body and is arranged horizontally, and includes a rod-shaped member that can be inserted into the main body portion of the connecting portion from the side opposite to the building unit, and the rod-shaped member is the building. By advancing toward the unit side and pushing the engaging portion, the engaging claw is displaced inward in the radial direction against the urging force to bring the engaging state between the engaging portion and the peripheral edge portion. The work scaffold according to claim 3, further comprising a disengagement portion to be disengaged.

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