Scaffolding equipment and scaffolding assembly method

Abstract

To provide a scaffolding device and a scaffolding assembly method that can be assembled and disassembled by a small number of people. [Solution] The scaffolding device in the elevator shaft according to the present disclosure comprises a top floor scaffolding unit, at least one intermediate floor scaffolding unit coupled below the top floor scaffolding unit, and a bottom floor scaffolding unit coupled below the intermediate floor scaffolding unit of the floor above. The scaffolding assembly method in the elevator shaft according to the present disclosure comprises the steps of: installing the bottom floor scaffolding unit at the bottom of the elevator shaft; coupling the intermediate floor scaffolding unit to the top floor scaffolding unit on the bottom floor scaffolding unit; lifting the top floor scaffolding unit floor by floor and sequentially coupling the next intermediate floor scaffolding unit to the intermediate floor scaffolding unit of the floor above, and repeating this process; and after the top floor scaffolding unit has been lifted to the top floor, coupling the bottom floor scaffolding unit to the intermediate floor scaffolding unit of the floor above.

Description

Technical Field

[0001] The present disclosure relates to a scaffolding device and a scaffolding assembly method.

Background Art

[0002] The conventional scaffolding device in the hoistway of an elevator disclosed in Patent Document 1 below includes a suspension tool provided near the machine room opening at the upper part of the hoistway, a suspension frame suspended from the suspension tool using a suspension rope, at least four wire ropes suspended from the suspension frame, a horizontal ground firmly connected in a crossbeam shape to the wire ropes using a fastening material, and a scaffolding board laid on the horizontal ground.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] There is a problem that a large number of workers are required to assemble and disassemble the scaffolding device in the hoistway of an elevator.

[0005] The present disclosure has been made to solve the above problems. An object of the present disclosure is to provide a scaffolding device and a scaffolding assembly method that can be assembled and disassembled with a small number of workers.

Means for Solving the Problems

[0006] The scaffolding device in the hoistway of an elevator according to the present disclosure includes a top floor scaffolding unit, at least one intermediate floor scaffolding unit coupled below the top floor scaffolding unit, and a bottom floor scaffolding unit coupled to the lower part of the intermediate floor scaffolding unit on the floor above. The scaffolding assembly method in an elevator shaft according to this disclosure comprises the steps of: installing the lowest floor scaffolding unit at the bottom of the elevator shaft; connecting the intermediate floor scaffolding unit to the top floor scaffolding unit on the lowest floor scaffolding unit; lifting the top floor scaffolding unit floor by floor and sequentially connecting the next intermediate floor scaffolding unit to the intermediate floor scaffolding unit on the floor above, and repeating this process; and after the top floor scaffolding unit has been lifted to the top floor, connecting the lowest floor scaffolding unit to the intermediate floor scaffolding unit on the floor above. [Effects of the Invention]

[0007] This disclosure makes it possible to provide a scaffolding device and a scaffolding assembly method that can be assembled and disassembled by a small number of people. [Brief explanation of the drawing]

[0008] [Figure 1] This figure shows a scaffolding device and scaffolding assembly method according to Embodiment 1. [Figure 2] This is a perspective view showing an example of a scaffolding unit. [Figure 3] This is a diagram showing an example of a caster. [Figure 4] This is a perspective view showing the connection points between scaffolding units. [Figure 5] This is a perspective view showing the process of transporting scaffolding units to the construction site. [Figure 6] This is a two-view drawing showing an example of an emergency braking device. [Figure 7] This is a side view showing an example of a guide shoe. [Figure 8] This is a cross-sectional view showing another example of a guide shoe. [Modes for carrying out the invention]

[0009] Embodiments will be described below with reference to the drawings. Common or corresponding elements in each drawing are denoted by the same reference numerals, and their descriptions are simplified or omitted. The configurations shown in the embodiments below are examples of the technical ideas related to this disclosure and can be combined with other known technologies, or multiple technical ideas described in this disclosure can be combined. Furthermore, it is possible to omit or modify parts of the configuration without departing from the gist of this disclosure.

[0010] Embodiment 1. Figure 1 is a diagram showing a scaffolding device and scaffolding assembly method according to Embodiment 1. As shown in Figure 1, the scaffolding device 1 in the elevator shaft 2 of this embodiment comprises a top floor scaffolding unit 3a, at least one intermediate floor scaffolding unit 3b coupled below the top floor scaffolding unit 3a, and a bottom floor scaffolding unit 3c coupled below the intermediate floor scaffolding unit 3b of the floor above. Hereinafter, the top floor scaffolding unit 3a, the intermediate floor scaffolding unit 3b, and the bottom floor scaffolding unit 3c may be collectively referred to as the scaffolding unit 3.

[0011] In this embodiment, the scaffolding device 1 can be assembled within the elevator shaft 2 by connecting the modularized scaffolding units 3. Therefore, the scaffolding device 1 can be assembled and disassembled by a small number of people.

[0012] The scaffolding device 1 of this embodiment is installed with the elevator car removed from the hoistway 2. The elevator may be hydraulic, traction-type, or drum-type.

[0013] The scaffolding assembly method of this embodiment includes the steps of: installing the lowest floor scaffolding unit 3c at the bottom of the elevator shaft 2; connecting the intermediate floor scaffolding unit 3b to the top floor scaffolding unit 3a on the lowest floor scaffolding unit 3c; lifting the top floor scaffolding unit 3a one floor at a time and sequentially connecting the next intermediate floor scaffolding unit 3b to the intermediate floor scaffolding unit 3b on the floor above, and repeating this process; and, after the top floor scaffolding unit 3a has been lifted to the top floor, connecting the lowest floor scaffolding unit 3c to the intermediate floor scaffolding unit 3b on the floor above. With the scaffolding assembly method of this embodiment, the scaffolding device 1 can be assembled with a small number of people. The scaffolding device 1 can be dismantled by following the reverse procedure described above.

[0014] As shown in Figure 1(1), the lowest floor scaffolding unit 3c is installed at the bottom of the elevator shaft 2, i.e., in the pit. As shown in Figure 1(2), each scaffolding unit 3 is brought into the elevator shaft 2 from the landing on the lowest floor of the building. As shown in Figure 1(3), when the top floor scaffolding unit 3a and the intermediate floor scaffolding unit 3b connected below it are lifted, the intermediate floor scaffolding unit 3b connected below it is brought into the elevator shaft 2, and this intermediate floor scaffolding unit 3b is added to the intermediate floor scaffolding unit 3b above it. By repeating this process, the scaffolding device 1 is completed as shown in Figure 1(4).

[0015] The scaffolding device 1 may include lifting means for lifting the top floor scaffolding unit 3a and the intermediate floor scaffolding unit 3b upward within the elevator shaft 2. The lifting means suspends the top floor scaffolding unit 3a from a support beam installed at the top of the elevator shaft 2. The lifting means may be, for example, a chain block, hoist, winch, etc.

[0016] The hoisting means may suspend the top floor scaffold unit 3a with respect to the receiving beam installed on the intermediate floor. In that case, before removing the elevator car, the intermediate floor scaffold unit 3b is carried to the intermediate floor in advance. For the floors above the intermediate floor, the intermediate floor scaffold unit 3b may be carried into the hoistway 2 from the landing on the intermediate floor and the intermediate floor scaffold units 3b may be connected. By doing so, the weight to be suspended by the hoisting means can be reduced, so that the scaffold device 1 can also be applied to high-rise buildings.

[0017] The scaffold unit 3 is preferably sized to fit on an elevator car. If it is sized to fit on an elevator car, it can be placed on the car before removing the car and carried to other floors.

[0018] The scaffold unit 3 may be foldable. When the scaffold unit 3 is foldable, it is preferably sized to fit on an elevator car in the folded state.

[0019] Figure 2 is a perspective view showing an example of the scaffold unit 3. As shown in Figure 2, casters 4 may be removably installed at the feet of the scaffold unit 3. By providing the casters 4, the movement of the scaffold unit 3 becomes easy. Figure 3 is a diagram showing an example of the casters 4.

[0020] Figure 4 is a perspective view showing the connecting part between the scaffold units 3. When connecting the scaffold units 3, the casters 4 are removed, and as shown in Figure 4, a joint 5 is placed between the scaffold units 3 and they are connected.

[0021] Figure 5 is a perspective view showing the state of carrying the scaffold unit 3 to the site. As shown in Figure 5, the scaffold unit 3 is directly placed on the truck 100 and carried to the site.

[0022] The top floor scaffolding unit 3a may be equipped with an emergency stop device 6 to prevent falling. Figure 6 is a two-view drawing showing an example of the emergency stop device 6. The emergency stop device 6 shown in Figure 6 is a slack rope type emergency stop device. As shown in Figure 6, the rope of the lifting means is attached to the rope suspension bolt 7. In the event that the rope comes off or breaks, the load on the rope suspension bolt 7 is released, causing the spring 8 to stretch. When the spring 8 stretches, the lever 9 rotates around the fulcrum, and both ends rise upward, fixing the gripping clamp body. As a result, the rope-stopping beam 10 and the upper beam fall, and the roller 11 gets between the elevator rail 12 and the gripping clamp block, preventing them from falling.

[0023] In this embodiment, even if the lifting rope comes loose or breaks, the emergency stop device 6 prevents the top floor scaffolding unit 3a from free-falling, thus providing a high level of safety.

[0024] The top floor scaffolding unit 3a and the intermediate floor scaffolding unit 3b may be equipped with guide shoes that move along the hoistway rail 12. Figure 7 is a side view showing an example of a guide shoe. As shown in Figure 7, the shoe 13 is attached to the top floor scaffolding unit 3a or the intermediate floor scaffolding unit 3b by a clamp 14. The shoe 13 is rotatable about a pivot axis 15. When the shoe 13 rotates, it is displaced between a position in contact with the hoistway rail 12 and a position not in contact with the hoistway rail 12.

[0025] Figure 8 is a cross-sectional view showing another example of a guide shoe. As shown in Figure 8, two fork-shaped shoes 17 are attached to the top floor scaffolding unit 3a or the intermediate floor scaffolding unit 3b by fasteners 16. When the fasteners 16 are loosened, the shoes 17 become movable in the longitudinal direction. When the shoes 17 are moved in the longitudinal direction, they are displaced to a position where they are in contact with the hoistway rail 12 and a position where they are not in contact with the hoistway rail 12.

[0026] If the top floor scaffolding unit 3a and the intermediate floor scaffolding unit 3b are equipped with guide shoes, when the top floor scaffolding unit 3a and the intermediate floor scaffolding unit 3b are suspended and raised or lowered by a lifting means, it is possible to prevent the top floor scaffolding unit 3a and the intermediate floor scaffolding unit 3b from swaying laterally. Therefore, the top floor scaffolding unit 3a and the intermediate floor scaffolding unit 3b can be raised and lowered smoothly.

[0027] At least one of the top floor scaffolding unit 3a, the intermediate floor scaffolding unit 3b, and the bottom floor scaffolding unit 3c may be equipped with an extension mechanism for its support column. That is, at least one of the top floor scaffolding unit 3a, the intermediate floor scaffolding unit 3b, and the bottom floor scaffolding unit 3c may have an extendable support column and be configured to change its height. If the support column of the scaffolding unit 3 has an extension mechanism, the size during transport can be reduced by shortening the support column during transport and extending it during assembly, thereby improving work efficiency.

[0028] The various aspects of this disclosure are summarized below as an appendix.

[0029] (Note 1) The top floor scaffolding unit, At least one intermediate scaffolding unit is coupled below the top floor scaffolding unit, The lowest floor scaffolding unit is coupled to the lower part of the intermediate floor scaffolding unit on the floor above, A scaffolding device for the elevator shaft equipped with [a specific feature / feature]. (Note 2) The scaffolding device according to Appendix 1, further comprising a lifting means for lifting the uppermost floor scaffolding unit and the intermediate floor scaffolding unit upward within the elevator shaft. (Note 3) The aforementioned top-floor scaffolding unit is a scaffolding device as described in Appendix 1 or Appendix 2, which is equipped with an emergency stop device to prevent falling. (Note 4) The scaffolding device according to any one of the appendices 1 to 3, wherein the top floor scaffolding unit and the intermediate floor scaffolding unit are equipped with guide shoes that move along the elevator rail. (Note 5) The scaffolding device according to any one of the uppermost floor scaffolding unit, the intermediate floor scaffolding unit, and the lowermost floor scaffolding unit, wherein at least one of the support columns is provided with an extension mechanism. (Note 6) A step for installing the lowest floor scaffolding unit at the bottom of the elevator shaft, The steps include connecting the intermediate floor scaffolding unit to the uppermost floor scaffolding unit on the lowermost floor scaffolding unit, The steps include repeatedly lifting the top floor scaffolding unit one floor at a time and sequentially connecting the next intermediate floor scaffolding unit to the intermediate floor scaffolding unit on the floor above, A method for assembling scaffolding in an elevator shaft, comprising the steps of: after the top floor scaffolding unit has been lifted to the top floor, connecting the bottom floor scaffolding unit to the intermediate floor scaffolding unit on the floor above. [Explanation of Symbols]

[0030] 1. Scaffolding device, 2. Hoistway, 3. Scaffolding unit, 3a. Top floor scaffolding unit, 3b. Intermediate floor scaffolding unit, 3c. Bottom floor scaffolding unit, 4. Caster, 5. Joint, 6. Emergency stop device, 7. Rope suspension bolt, 8. Spring, 9. Lever, 10. Rope securing beam, 11. Roller, 12. Hoistway rail, 13. Shoe, 14. Clamp, 15. Rotating shaft, 16. Fastener, 17. Shoe

Claims

1. The top floor scaffolding unit, At least one intermediate scaffolding unit is coupled below the top floor scaffolding unit, The lowest floor scaffolding unit is connected to the lower part of the intermediate floor scaffolding unit on the floor above, A scaffolding device for the elevator shaft equipped with [a specific feature / feature].

2. The scaffolding device according to claim 1, further comprising a lifting means for lifting the uppermost floor scaffolding unit and the intermediate floor scaffolding unit upward within the elevator shaft.

3. The scaffolding device according to claim 1 or claim 2, wherein the top floor scaffolding unit is equipped with an emergency stop device to prevent falling.

4. The scaffolding device according to claim 1 or claim 2, wherein the top floor scaffolding unit and the intermediate floor scaffolding unit are provided with guide shoes that move along the elevator rail.

5. The scaffolding device according to claim 1 or claim 2, wherein at least one of the uppermost floor scaffolding unit, the intermediate floor scaffolding unit, and the lowermost floor scaffolding unit is provided with an extendable / retractable means on the support column.

6. A step for installing the lowest floor scaffolding unit at the bottom of the elevator shaft, The steps include connecting the intermediate floor scaffolding unit to the uppermost floor scaffolding unit on the lowermost floor scaffolding unit, The steps include repeatedly lifting the top floor scaffolding unit one floor at a time and sequentially connecting the next intermediate floor scaffolding unit to the intermediate floor scaffolding unit on the floor above, A method for assembling scaffolding in an elevator shaft, comprising the steps of: after the top floor scaffolding unit has been lifted to the top floor, connecting the bottom floor scaffolding unit to the intermediate floor scaffolding unit on the floor above.

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