JP2007154540A - Temporary scaffolding unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a temporary scaffolding unit capable of moving a temporary scaffolding toward the upper floor side with the progress of building work. <P>SOLUTION: This temporary scaffolding unit for use in building an elevator shaft in a building has a support stage 10 retractably provided with engaging pieces 13 engaged with brackets 5a on the building side, and a scaffolding base stage 20 retractably provided with engaging pieces 23 engaged with brackets 52 on the building side. The scaffolding base stage 20 and multiple stages of built-up workbenches 31-33 form a scaffolding assembly 30. The scaffolding assembly 30 is driven upward in the state of the support stage 10 being supported by a building frame, and the support stage 10 is driven upward in the state of the scaffolding assembly being supported by the building frame. The temporary scaffolding unit is thus driven to the upper floor side with the progress of building work to construct the elevator shaft. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a temporary scaffold unit that is detachably attached to a building in order to build an elevator shaft when building the building.

  Middle- and high-rise buildings are equipped with elevators for moving people and objects in the vertical direction, and the building is formed with a vertical space, that is, an elevator shaft, in which the elevators are movably installed in the vertical direction. . This vertical space is formed by a wall constituting the building, and an opening for an elevator entrance / exit is formed in a part of the wall. Therefore, when building a building, the rebar assembly work for building the wall that forms the elevator shaft, the mounting work of the formwork, the concrete placement work, and the surface of the wall after removing the formwork Plastering work is required.

In order to perform these operations, conventionally, a temporary scaffold is constructed at a portion corresponding to the interior of the elevator shaft to be constructed, and the temporary scaffold is sequentially extended to the upper floor as the upper floor is constructed. ing. For example, as described in Patent Document 1, as a scaffold for performing an outer wall work of a building, there is a technique in which a unit frame is moved to the upper floor side as the building work progresses. Although being developed, such a unit frame cannot be fixed inside the elevator shaft.
JP 2003-184301 A

  In order to build the wall that forms the elevator shaft as in the past, when building the scaffold sequentially from the lowest floor to the upper floor, when building the top floor part, the scaffold that is long in the vertical direction in the elevator shaft As a result, the amount of frame members and the like for constructing the scaffold becomes large, and it takes a lot of work to remove the scaffold after the construction is completed.

  The objective of this invention is providing the temporary scaffold unit which can move a temporary scaffold toward the upper floor side with progress of construction work.

  The temporary scaffold unit of the present invention is a temporary scaffold unit that is disposed inside the building when an elevator shaft is built on the building, and the first engagement piece that engages with the building has an end portion. A support stage comprising a plurality of support beams which are provided so as to be movable forward and backward, and which are parallel to each other, and a connection beam which connects the support beams to each other, and the building which is shifted vertically with respect to the support stage Scaffolding stage provided with a plurality of frame beams which are provided in the end portion so that the second engagement pieces can be moved forward and backward, and are connected in parallel to each other, and a connecting beam for connecting the frame beams to each other And a plurality of scaffolds that are parallel to each other and a coupling bracket that couples the scaffold frames to each other, and a plurality of assembly worktables that are connected in the vertical direction, and the assembly worktable that is attached For the scaffolding stage A scaffold assembly formed between the support stage and the scaffold assembly, and driving the scaffold assembly upward while the support stage is supported by the building; The scaffolding stage of the scaffold assembly has drive means for driving the support stage upward while being supported by the building.

  In the temporary scaffold unit of the present invention, the driving means is formed by a hoisting machine that winds up a measure such as a wire or a chain, and an upper end portion of the scaffold assembly and an upper end portion of a lifting rod fixed perpendicularly to the support stage; The support stage is driven to rise while the hoisting machine is attached to the scaffold, and the scaffold is attached to the scaffolding stage while the hoisting machine is attached between the upper end of the hoisting rod and the scaffolding stage. The assembly is driven up.

  In the temporary scaffold unit of the present invention, the driving means is formed by a hoisting machine for hoisting a wire or a chain, and the hoisting machine is attached between the support stage and the scaffolding stage. The support stage is driven up, and the scaffold assembly is driven upward with the hoist mounted between the upper end of the lifting rod fixed perpendicularly to the support stage and the scaffolding stage. It is characterized by doing.

  In the temporary scaffold unit of the present invention, the driving means is formed by a hoisting machine for hoisting a wire or a chain, and the hoisting machine is attached between the support stage and the scaffolding stage. The scaffold assembly is driven up, and the support stage is driven up while the hoisting machine is attached between the upper end of the scaffold assembly and the support stage.

  According to the present invention, the scaffold assembly is driven up while the support stage is supported by the building, and the support stage is moved under the state where the scaffold stage of the scaffold assembly is supported by the building. By driving up, the scaffold assembly can be moved upward toward the upper floor as the building work proceeds. Thereby, when constructing a building of a middle floor or a higher floor, a temporary scaffold unit can be constructed with a small number of members. Also, the temporary scaffold unit can be easily removed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a temporary scaffold unit according to an embodiment of the present invention, and this temporary scaffold unit has a substantially quadrangular support stage 10 and a scaffold base stage 20 respectively.

  The support stage 10 includes two support beams 11 arranged in parallel to each other and a connecting bar 12 that connects them together. The support stage 10 has a width dimension of W and a length dimension of L. The length L is a rectangular frame longer than the width W. Each support beam 11 is formed by a square pipe having a square cross section, and engagement pieces 13 made of square pipes are movably incorporated at both ends, and each engagement piece 13 enters the inside of the support beam 11. It can move forward and backward between the position and the position protruding from the end. A scaffolding plate 14 made of a steel plate, expanded metal, wire mesh, wooden board, or the like is attached to the support stage 10, and the two support bars 12 are parallel to the support beam 11 to support the scaffold plate 14. The reinforcing beam 15 is attached. Thus, since the scaffolding board 14 is provided in the support stage 10, an operator can work on it. Fixing brackets 16 are attached to the inside of the four corners of the support stage 10, and vertical rods 17 extending in the vertical direction are fixed to the respective fixing brackets 16.

  The scaffolding stage 20 is provided with two frame beams 21 arranged in parallel to each other and three connecting rods 22 that connect these to each other. The scaffolding stage 20 is the same as the supporting stage 10. The frame has a width dimension W and a length dimension L. Each frame beam 21 is formed by a square pipe having a square cross section like the support beam 11, and engagement pieces 23 made of a square pipe are movably incorporated at both ends. It can move forward and backward between a position entering the inside of the underframe beam 21 and a position protruding from the end. Between the connecting rod 22 at the center and the connecting rod 22 at both ends, a plurality of cloth boards provided with hooks that engage with the connecting rod 22 at both ends are detachable as scaffolding plates 24. The operator can work on the scaffold plate 24 of the platform stage 20. As the scaffold plate 24, a plate made of a steel plate or expanded metal may be used in the same manner as the scaffold plate 14 of the support stage 10, instead of a detachable cloth plate provided with a hook.

  Three assembling work platforms 31 to 33 connected to each other are attached to the scaffolding stage 20, and the scaffolding assembly 30 is formed by the scaffolding stage 20 and these assembling work tables 31 to 33. Yes.

  FIG. 2 is a perspective view showing the basic structure of the lowermost assembly-type workbench 31, and the basic structures of the other assembly-type worktables 32 and 33 are the same. As shown in FIG. 2, the assembly-type workbench 31 includes six portal scaffolding frames 36 each including two columns 34 and horizontal beams 35 connecting the upper ends of these columns 34. In FIG. 2, reference symbols a to f are attached to the six scaffold frames 36. As shown in FIG. 2, the two scaffold frames 36a and 36b are connected adjacently, the two scaffold frames 36c and 36d are connected adjacently, and the two scaffold frames 36e and 36f are connected adjacently. . Of these six scaffold frames 36a to 36f, the scaffold frames 36a, 36c, 36e are parallel to each other to form a pair, and the scaffold frames 36b, 36d, 36f are parallel to each other to form a pair. 36a to 36f are arranged in three rows.

  The scaffold frames that are parallel to each other and are paired are connected by a brace 37 as a coupling fitting, and the assembly work table 31 can be assembled and disassembled by the respective scaffold frames 36a to 36f and the brace 37. Yes. Similarly, the other two-stage assembly type work platforms 32 and 33 can be assembled and disassembled by the scaffold frames 36a to 36f and the braces 37. These three assembly-type work platforms 31 to 33 are connected to the scaffolding stage 20 by being connected by the column 34 constituting each scaffolding frame 36, and the scaffolding assembly 30 is assembled together with the scaffolding stage 20. become. A cloth board is detachably mounted as a scaffold board 38 on each of the assembly work tables 31 to 33.

  The cloth plates as the respective scaffold plates 38 are provided with hooks at both ends, and the hook plates are engaged with the horizontal beams 35 of the respective assembly work tables 31 to 33 so that the cloth plates are assembled. It mounts | wears on the type | formula work tables 31-33, and an operator can work now on each cloth board. As the scaffold plate 38, a plate material made of a steel plate or expanded metal may be used in the same manner as the scaffold plate 14 of the support stage 10, instead of a removable cloth plate provided with a hook. However, the scaffold plate 38 may not be provided on the uppermost assembly-type workbench 33.

  Lifting rods 17 are vertically attached to the four corners of the support stage 10 so as to be positioned inside the quadrilateral frame by support beams 11 and connecting rods 12 constituting the support stage 10. The scaffold plate 24 and the scaffold plate 24 attached to the first and second assembling work tables 31 and 32 are respectively formed with through holes 42 through which the lifting rod 17 passes.

  As shown in FIG. 2, each of the assembly-type work tables 31 to 33 constituting the scaffold assembly 30 is formed by a total of six scaffold frames 36. The size of the scaffold assembly 30 is different from that of the building. Depending on the area of the elevator shaft to be formed, the scaffold assembly 30 can be formed by any number of assembly-type worktables. For example, the assembly work tables 31 to 33 may be formed by arranging at least two scaffold frames 36 in parallel with each other and connecting the scaffold frames 36 with the braces 37. Further, the number of upper and lower steps of the assembly work table can be set to an arbitrary number.

  In order to perform the construction work of the elevator shaft that is formed on the building toward the upper floor as the building of the temporary scaffolding unit progresses, the scaffold assembly 30 is moved upward as the building progresses. As shown in FIG. 1, the upper end of the lifting rod 17 is in a position inside the first stage assembly workbench 31, that is, the support stage 10 is separated from the scaffolding stage 20. Then, the scaffold assembly 30 is fixed to the building at the part of the scaffolding stage 20 and the support stage 10 is moved up so as to approach the scaffolding stage 20. On the other hand, when the support stage 10 approaches the scaffolding stage 20 and the upper end of the lifting rod 17 is positioned inside the uppermost assembly workbench 33, the support stage 10 is made into a building. As a fixed state, the scaffold assembly 30 is moved upward so that the scaffold stage 20 is separated from the support stage 10.

  Thus, in order to alternately raise and move the support stage 10 and the scaffold assembly 30, the support bar 43 is attached to the uppermost assembly work table 33, and the support bar 43 includes four support bars 43. Corresponding to the lifting rod 17, a hoisting machine 44 composed of four winches or hoists is detachably mounted as a driving means by a hook 45. The hoisting machine 44 has a rotating body that winds up the strip 46 such as a wire, rope, or chain by driving a motor, and the tip of the strip 46 is removably attached to the tip of the lifting rod 17. Yes.

  Each hoisting machine 44 is detachably attached to the tip of the lifting rod 17 by a hook 45, and the tip of the guide 46 is detachably attached to the scaffolding stage 20. As described above, the four hoisting machines 44 are provided between the scaffold assembly 30 and the support stage 10, and the upward movement of the support stage 10 and the upward movement of the scaffold assembly 30 can be sequentially performed.

  FIGS. 3 and 4 show that the temporary scaffold unit shown in FIG. 1 is moved upward in order to carry out rebar assembly work for building a wall that forms an elevator shaft in the building as the building work progresses. It is process drawing which shows the procedure made to do.

  FIG. 3A shows that the support stage 10 is engaged with the first bracket 51 attached to the first-floor building F1, assuming that the building is built up to the second-floor building F2, for example. The piece 13 is engaged so that the support stage 10 is supported by the building frame, and the second bracket 52 attached to the building frame F2 on the second floor is positioned on the building frame F1 above the first bracket 51. A state in which the respective engagement pieces 23 of the platform stage 20 are engaged and the scaffold platform stage 20 is supported by the building is shown. Since each of the support stage 10 and the scaffolding stage 20 is provided with four engagement pieces 13 and 23, the building frame corresponds to the number of the engagement pieces 13 and 23 corresponding to each floor. Thus, four first and second brackets 51 and 52 are attached. However, you may make it form the engagement hole which each engagement piece 13 and 23 engages in a building frame, without attaching the brackets 51 and 52 to a building frame.

  Under this condition, in order to construct the building frame F3 on the third floor, an operator rides on the scaffolding plate 24 of the scaffolding stage 20 and the scaffolding plate 38 of the assembly-type worktable 31, and forms the formwork. M mounting work, rebar assembling work, and concrete placing work are performed, and the formwork M is placed on the scaffolding stage 20. Further, the worker gets on the scaffolding plate 14 of the support stage 10 and the wall plastering work of the building frame F2 on the second floor is performed.

  After these operations have been completed for the second and third floor portions, as shown in FIG. 3A, the hoisting machine 44 is attached to the support bar 43 at the upper end of the scaffold assembly 30 and the hoisting machine 44 measures are taken. With the tip of 46 attached to the tip of the lifting rod 17, the support stage 10 is slightly moved up. Next, after the respective engagement pieces 13 are moved backward toward the inside of the support beam 11 and separated from the bracket 51, the respective hoisting machines 44 are operated and the support stage 10 is moved up by the hoisting machines 44. During this upward movement, the hook 45 of the hoisting machine 44 may be attached to the tip of the lifting rod 17, and the tip of the guide 46 may be attached to the support rod 43 at the upper end of the scaffold assembly 30.

  FIG. 3B shows a state where the support stage 10 is moved up. Under this state, when each engaging piece 13 of the support stage 10 is projected, the support stage 10 is supported by the building by the bracket 51 attached to the building frame F2 on the second floor. FIG. 4A shows a state in which each engagement piece 13 of the support stage 10 is engaged with the first bracket 51.

  Next, in order to construct the building frame F4 on the fourth floor, as shown in FIG. 4A, the hoisting machine 44 is attached to the tip of the lifting rod 17 by the hook 45, and the tip of the strip 46 is attached to the scaffold. Attached to the stage 20. Under this state, the hoisting machine 44 is driven to slightly lift and move the scaffold stage 20, and then the respective engagement pieces 23 are moved backward toward the inside of the frame beam 21. Next, each hoisting machine 44 is operated, and the scaffolding stage 20 is pulled up by the hoisting machine 44 to move the scaffolding assembly 30 upward. In this ascending movement, the hook 45 of the hoisting machine 44 may be attached to the scaffolding stage 20, and the distal end portion of the measure 46 may be attached to the distal end portion of the lifting rod 17.

  FIG. 4B shows a state in which the scaffold assembly 30 is raised to the upper limit position and then the engagement piece 23 of the scaffold stage 20 is protruded and engaged with the bracket 52. The bracket 52 supports the building frame F3. Under this condition, in order to construct the building frame F4 on the fourth floor, an operator rides on the scaffolding plate 24 of the scaffolding stage 20 and the scaffolding plate 38 of the assembly-type worktable 31, and forms the formwork. M mounting work, rebar assembling work, and concrete placing work are performed. Further, the worker gets on the scaffolding plate 14 of the support stage 10 and the wall plastering work of the building frame F3 on the third floor is performed.

  As described above, the same hoisting machine 44 is used to raise the support stage 10 and the scaffold assembly 30 ascending, but the hoisting machine that raises the support stage 10 and the hoisting that raises the scaffold assembly 30. The machine may be attached separately.

  5 and 6 are process diagrams showing the work of dismantling and removing the temporary scaffold unit from the elevator shaft that has been completed and finished.

  As shown in FIG. 5A, after the construction of the topmost building F10 is completed, the engagement piece 13 of the support stage 10 is moved backward and the support stage 10 is moved up by the hoisting machine 44. After raising the support stage 10 to the ascending limit position, the support stage 10 is supported by the bracket 51, and the scaffold assembly 30 including the scaffold base stage 20 is disassembled. The dismantled member is carried out from an elevator doorway formed in the building housing F10. After dismantling them, the ceiling wall R on the top floor is constructed as shown in FIG. At this time, the elevating rod 17 attached to the support stage 10 is made to protrude from above the ceiling wall R, and a through hole H through which the elevating rod 17 passes is formed in the ceiling wall R.

  After the construction of the ceiling wall R is completed, the assembling work table 33 is reassembled on the ceiling wall R and the hoisting machine 44 is attached to the assembling work table 33 as shown in FIG. Under this state, as shown in FIG. 6A, the hoisting machine 44 moves the support stage 10 down to the lowest layer and removes it. In this way, as shown in FIG. 6 (B), the elevator shaft is built in the building and the inner surface finish of the building forming the elevator shaft is completed, and the through hole H formed in the ceiling wall R is It is embedded with concrete. The brackets 51 and 52 attached to the building are removed if necessary.

  7 (A) to 7 (D) are schematic views showing a temporary scaffold unit according to another embodiment of the present invention. In these drawings, the scaffold assembly is attached to the scaffold base stage 20 together with the temporary scaffold unit. The assembly type work tables 31 to 33 constituting the solid 30 are not shown.

  As shown in FIG. 7A, when the support stage 10 is raised, the hook 45 of the hoisting machine 44 is attached to the support bracket 61 attached to the scaffolding stage 20, and the tip of the measure 46 is attached to the support stage 10. As a result, the support stage 10 is raised under the state where the scaffold assembly 30 is fixed to the building frame at the scaffold stage 20 portion. FIG. 7B shows a state where the support stage 10 is driven to the ascending limit position. Next, when raising the scaffold assembly 30, as shown in FIG. 7C, the tip of the guide 46 is attached to the tip of the lifting rod 17, and the hook 45 of the hoisting machine 44 is attached to the scaffold base stage 20. The hoisting machine 44 is driven under the condition that the support stage 10 is fixed to the building frame. FIG. 7D shows a state in which the scaffold assembly 30 is driven to the ascending limit position in this way.

  In this way, the lifting rod 17 may be used when the scaffold assembly 30 is driven to rise, and the support stage 10 is driven to rise toward the scaffold assembly 30 as shown in FIGS. 3 and 4. The lifting rod 17 may be used when the scaffold assembly 30 is driven upward toward the support stage 10.

  FIG. 8 (A) to FIG. 8 (D) are schematic views showing a temporary scaffold unit according to another embodiment of the present invention. In this temporary scaffold unit, the scaffold assembly 30 moves up and down inside the support stage 10, and the support stage 10 is not provided with the scaffold plate 14 shown in FIG. A support bracket 61 to which the hoisting machine 44 is attached is provided at the frame portion. Further, the scaffold stage 20 provided at the lower end of the scaffold assembly 30 is arranged below the support stage 10.

  As shown in FIG. 8A, when the scaffold assembly 30 is raised, the hook 45 of the hoisting machine 44 is attached to the support bracket 61 attached to the support stage 10, and the tip of the measure 46 is connected to the scaffold stage 20. And the hoisting machine 44 is driven to drive the scaffold assembly 30 upward toward the support stage 10. Also in this ascending drive, the hook 45 of the hoisting machine 44 may be attached to the scaffolding stage 20 and the measure 46 may be attached to the support bracket 61. FIG. 8B shows a state in which the scaffold assembly 30 is closest to the support stage 10 in this way. In order to raise the support stage 10 from this state, as shown in FIG. 8C, the guide 46 of the hoisting machine 44 is attached to the upper end of the scaffold assembly 30, and the hoisting machine 44 is driven. Accordingly, as shown in FIG. 8D, the support stage 10 is driven to the ascending limit position. The hook 45 of the hoisting machine 44 may be attached to the upper end portion of the scaffold assembly 30 and the measure 46 may be attached to the support bracket 61 even when the support stage 10 is lifted.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, as shown in FIG. 1, four lifting rods 17 are attached to the four corners to attach the hoisting machine 44 to the support stage 10, but depending on the weight of the scaffold assembly 30 and the support stage 10, Two rods 17 may be attached diagonally to the support stage 10 and driven by two hoisting machines 44, or one rod 17 may be attached to the center of the support stage 10 and driven by one hoisting machine 44. Also good.

FIG. 1 is a perspective view showing a temporary scaffold unit according to an embodiment of the present invention. It is a perspective view which shows the basic structure of the assembly type work table | surface of the lowest stage. (A), (B) is process drawing which shows the procedure which raises and moves the temporary scaffold unit shown in FIG. (A), (B) is process drawing which shows the procedure which raises and moves the temporary scaffold unit shown in FIG. (A), (B) is process drawing which shows the disassembly procedure of the temporary scaffold unit shown in FIG. (A), (B) is process drawing which shows the disassembly procedure of the temporary scaffold unit shown in FIG. (A)-(D) are process drawings which show the procedure which raises the temporary scaffold unit which is other embodiment of this invention. (A)-(D) are process drawings which show the procedure which raises the temporary scaffold unit which is further another embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Support stage 11 Support beam 12 Connecting bar 13 Engagement piece 14 Scaffold plate 15 Reinforcement beam 16 Fixing bracket 17 Lifting rod 20 Scaffolding stage stage 21 Frame frame 22 Connecting bar 23 Engagement piece 24 Scaffold plate 30 Scaffolding assembly 31 ˜33 Assembling work table 34 Post 35 Horizontal beam 36 Scaffold frame 37 Bracing 38 Scaffold plate 42 Through hole 43 Support rod 44 Hoisting machine 45 Hook 46 Measure 51 Bracket (first bracket)
52 Bracket (second bracket)
61 Support bracket M Formwork

Claims (4)

A temporary scaffold unit that is arranged inside the building when building an elevator shaft in the building,
A support stage comprising a plurality of support beams that are provided at the end portion so that the first engagement pieces that engage with the building can move forward and backward, and parallel to each other, and a connection beam that connects the support beams to each other When,
A plurality of underframe beams that are shifted in the vertical direction with respect to the support stage and engage with the building are provided at end portions so as to be movable forward and backward, and are parallel to each other, and the underframe A scaffolding stage with connecting beams connecting the beams to each other;
A plurality of assembly worktables that are vertically connected to each other, each of which includes a plurality of scaffold frames that are parallel to each other and a coupling bracket that connects the scaffold frames to each other, and the scaffolding base on which the assembly worktable is attached A scaffold assembly formed by a stage;
The scaffolding stage is provided between the support stage and the scaffold assembly, and drives the scaffold assembly up while the support stage is supported by the building. A temporary scaffold unit comprising drive means for driving up the support stage under a state of being supported by the building.   2. The temporary scaffold unit according to claim 1, wherein said driving means is formed by a hoisting machine that winds up a wire or chain or the like, and an upper end of an elevating rod fixed perpendicularly to the upper end of said scaffold assembly and said support stage. The support stage is driven to rise while the hoisting machine is attached between the upper part and the hoisting machine is attached between the upper end of the hoisting rod and the scaffolding stage. A temporary scaffold unit, wherein the scaffold assembly is driven up.   2. The temporary scaffold unit according to claim 1, wherein the driving means is formed by a hoisting machine for hoisting a wire or a chain, and the hoisting machine is attached between the support stage and the scaffolding stage. The support stage is driven upward, and the scaffold assembly is moved upward with the hoist mounted between the upper end portion of the lifting rod fixed vertically to the support stage and the scaffolding stage. Temporary scaffolding unit characterized by being driven by   2. The temporary scaffold unit according to claim 1, wherein the driving means is formed by a hoisting machine for hoisting a wire or a chain, and the hoisting machine is attached between the support stage and the scaffolding stage. The temporary assembly is driven to raise the scaffold assembly, and the support stage is driven to rise with the hoist mounted between the upper end of the scaffold assembly and the support stage. unit.

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