JP-7856356-B1 - Scaffolding component installation device and scaffolding component installation method

Abstract

[Problem] To provide a scaffolding component installation technology that can reduce the number of man-hours required when extending new scaffolding from existing scaffolding. [Solution] The scaffolding member installation device A, used when installing scaffolding members of a suspended scaffolding on a structure, comprises a rod-shaped body 1, a suspension part 3 that suspends and supports the rod-shaped body from below the structure, and a sliding suspension body 4 that is supported by the rod-shaped body 1 and suspends the scaffolding member. The suspension part 3 is located in the middle of the rod-shaped body 1 in the axial direction. The sliding suspension body 4 can slide along the rod-shaped body 1 to a position further forward than the suspension part 3. [Selection Diagram] Figure 1

Inventors

• 市村 元旦

Assignees

• Ｔｓ ｆａｃｔｏｒｙ株式会社

Dates

Publication Date

20260511

Application Date

20251218

Claims (3)

1. A scaffolding member installation device used when installing scaffolding members of a suspended scaffolding on a structure, A rod-shaped body and A suspension part that suspends and supports the rod-shaped body from below the structure via a plate-shaped body erected above the rod-shaped body , A sliding suspension body is supported by the aforementioned rod-shaped body and suspends the scaffolding member, The system includes a rear end displacement restricting portion provided on the rear end side of the suspension portion so as to protrude above the rod-shaped body, and which contacts the structural portion from below to restrict the rear end of the rod-shaped body from being displaced above a predetermined position, The suspension portion is located in the middle of the rod-shaped body in the axial direction. The sliding suspension body is fitted onto the rod-shaped body and comprises a pair of arc-shaped arm portions having a gap larger than the thickness of the plate-shaped body, and is a scaffolding member installation device that can slide along the rod-shaped body from the rear end of the rod-shaped body to a position forward of the suspension portion.
2. The scaffolding member installation device according to claim 1, wherein the suspension portion is located behind the center in the axial direction of the rod-shaped body.
3. A method for installing scaffolding members of a suspended scaffolding system on a structure, The process involves suspending the rod-shaped body from the underside of the structure via a plate-shaped body erected above it, using a suspension portion provided in the middle of the rod-shaped body in the axial direction, so that the front portion of the rod-shaped body protrudes forward of the existing scaffolding. A step of restricting the displacement of the rear end of the rod-shaped body from a position above a predetermined position by bringing a rear end displacement restricting portion, which is provided on the rear end side of the suspension portion so as to protrude above the rod-shaped body, into contact with the structural portion from below , A step of suspending the scaffolding member from a sliding suspension body that is slidable in the front-rear direction along the rod-shaped body from the rear end of the rod-shaped body to the front of the suspension portion, by fitting a pair of arc-shaped arm portions, which have a gap larger than the thickness of the plate-shaped body, onto the rod-shaped body, A method for installing a scaffolding member, comprising the step of sliding the slide suspension body along the rod-shaped body forward of the suspension portion.

Description

This invention relates to a technique for installing scaffolding components, particularly for suspended scaffolding installed directly beneath structures such as bridges, used during the construction and maintenance of buildings. Traditionally, scaffolding has been used for high-altitude work such as construction and maintenance of buildings. While suspended scaffolding is used for bridges and elevated roads, this method of assembling the scaffolding while supporting the platform from below presents various challenges, such as the need to restrict traffic below and the difficulty of supporting the platform from below. Various proposals have been made to address these challenges. For example, Patent Document 1 discloses a scaffolding construction device that uses guide rails fixed to a building and movable suspension devices that can move back and forth along the guide rails to feed the main beams forward. In this technology, the main beams are fed forward and fixed from above the existing scaffolding using the movable suspension devices, and then the flooring materials are installed. By repeating this process, the scaffolding can be gradually extended. However, the technology in Patent Document 1 requires the installation of guide rails equivalent to the total length of the scaffolding to be installed, and the installation of these guide rails is not easy. To solve these problems, the inventors of this invention invented the scaffolding floor installation technology described in Patent Document 2. This technology eliminates the need to install guide rails, as in Patent Document 1, allowing for easy extension of the scaffolding. However, the technology described in Patent Document 2 requires the locking portion at the tip of the rod-shaped member to be locked, making it unsuitable for scaffolding installed directly beneath structures such as bridges. A technique for installing scaffolding directly beneath structures such as bridges is disclosed, for example, in Patent Document 3. This technique in Patent Document 3 includes a hanger rail suspended directly beneath the structure and a launching device that moves back and forth along the hanger rail. When installing new scaffolding, the launching device is advanced with the new scaffolding member suspended from its tip, thereby launching the new scaffolding member forward. Japanese Patent Publication No. 2003-097046Japanese Patent Publication No. 2025-140931Japanese Patent Publication No. 2023-012754 This is a perspective view of a scaffolding component installation device.This is a side view of a scaffolding installation device suspended from the underside of a bridge.This diagram schematically illustrates the process of installing scaffolding floors.This diagram illustrates the process flow for installing scaffolding floors. The following describes embodiments of the scaffolding member installation device and scaffolding member installation method according to the present invention, using drawings. This embodiment describes the installation of suspended scaffolding on the underside of bridge B (an example of a structure in this invention). In this invention, "front" and "back" refer to the side of the newly installed scaffolding platform (hereinafter referred to as "new scaffolding") and the side of the existing scaffolding platform (hereinafter referred to as "existing scaffolding"), respectively. Furthermore, in the following description, the width direction refers to the direction perpendicular to the front-back direction on a horizontal plane. Figure 1 is a perspective view of the scaffolding member installation device in this embodiment. The scaffolding member installation device A in this embodiment comprises a rod-shaped body 1, a plate-shaped body 2, a suspension part 3, a sliding suspension body 4, and a contact body 5. In this embodiment, a hollow, so-called single pipe is used as the rod-shaped body 1. By using such a hollow single pipe, the weight of the rod-shaped body 1 can be reduced. The length of the rod-shaped body 1 can be changed as appropriate, but in this embodiment, it is set to 2600 mm. The plate-like body 2 is erected above the rod-like body 1 in a position where its thickness direction coincides with its width direction. The length of the plate-like body 2 is slightly shorter than the length of the rod-like body 1, and the front ends of the rod-like body 1 and the plate-like body 2 coincide. A through-hole 21 is formed in the plate-like body 2, extending through it in the thickness direction. A suspension part 3, described later, is attached to this through-hole 21. That is, the suspension part 3 is located at the position of this through-hole 21, and the scaffolding member installation device A is suspended from the bridge at this position. In this embodiment, the through-hole 21 is formed 1200 mm from the rear end of the rod-like body 1. In other words, the through-hole 21 is formed slightly behind (in the middle) the center in th