JP-2026075906-A - Prefabricated scaffolding

Abstract

[Problem] To provide a prefabricated scaffolding that can be easily installed while ensuring safety. [Solution] The assembled scaffolding 1 according to this embodiment comprises a fixing member 3 that is fixed to electrical equipment, and a plurality of portable scaffolding members 4, each having a single step 43 and varying heights. The plurality of scaffolding members 4 are arranged so that the relatively taller scaffolding members 4 are connected to the fixing member 3, and the relatively lower scaffolding members 4 are sequentially connected to the relatively taller scaffolding members 4, thereby forming a staircase-like scaffolding. [Selection Diagram] Figure 1

Inventors

• 太田 貴善
• 関根 豪
• 上田 浩

Assignees

• 株式会社東芝

Dates

Publication Date

20260511

Application Date

20241023

Claims (6)

1. A fixing member that is fixed to the electrical equipment, It comprises multiple portable scaffolding members, each having a single step and varying heights, A prefabricated scaffolding system in which a plurality of scaffolding members are assembled to form a stepped scaffolding by connecting the relatively taller scaffolding members to the fixing members and sequentially connecting the relatively lower scaffolding members to the relatively taller scaffolding members.
2. The assembly-type scaffolding according to claim 1, wherein the scaffolding members are connectable from three sides of the rectangular treads.
3. The scaffolding member comprises a protruding portion projecting outward from one side of the rectangular tread, a wall portion extending downward from the tip of the protruding portion, four legs provided at the four corners of the tread, and one or more leg-to-leg connecting members connecting the legs, wherein the protruding portion is inserted between the legs of the relatively taller scaffolding member, and the wall portion is hooked onto the leg-to-leg connecting member of the relatively taller scaffolding member, thereby connecting them, as described in claim 1.
4. The fixing member comprises two column members arranged along the wall surface of the electrical equipment, and a plurality of inter-column connecting members connecting the column members at multiple positions separated vertically. The assembly-type scaffolding according to claim 3, wherein the scaffolding member is connected to the fixing member by the projection being inserted between the column members of the fixing member and the wall being hooked onto the column-to-column connecting member.
5. The scaffolding member has multiple protruding portions and wall portions at vertically separated positions, and is connected at multiple positions, as described in claim 3 or 4.
6. The aforementioned fixing member is secured using the screw holes for eye bolts provided on the top surface of the electrical equipment. The assembly scaffolding according to claim 1, wherein the fixing screw for fixing the fixing member has a head that is shaped like a frame and is large enough to be grasped by a worker.

Description

This disclosure relates to a prefabricated scaffolding used when performing work on electrical equipment. Traditionally, when working at heights, tools such as stepladders, ladders, or portable work platforms like those described in Patent Document 1 have been used. Japanese Patent Publication No. 2024-93541 A schematic diagram showing an example of the configuration of a prefabricated scaffolding according to the embodiment.A schematic diagram showing examples of electrical equipment layouts and work objects.A schematic diagram showing an example of the configuration of the fixing member.A schematic diagram showing an example of the configuration of fixing screws.A schematic diagram showing a basic structural example of scaffolding components.A schematic diagram showing examples of scaffolding component dimensions.A schematic diagram showing examples of how scaffolding members are connected and installed.A schematic diagram illustrating other uses of prefabricated scaffolding.A schematic diagram showing examples of how the fixing members are fixed. The embodiments will be described below with reference to the drawings. As shown in Figures 1(a) and 1(b), the prefabricated scaffolding 1 according to this embodiment is intended for use in electrical equipment such as a cubicle-type high-voltage power receiving facility (hereinafter simply referred to as cubicle 2). For example, in this embodiment, a cubicle 2 with a height (H1) of approximately 2300 mm is assumed. The prefabricated scaffolding 1 consists of a fixing member 3 that is fixed to the cubicle 2, and multiple portable scaffolding members 4 of different heights. Note that the electrical equipment does not necessarily have to be the cubicle 2; any relatively heavy equipment with a generally rectangular or cubic enclosure can be used with the prefabricated scaffolding 1. In this embodiment, the prefabricated scaffolding 1 comprises three scaffolding members 4: scaffolding member 4A, scaffolding member 4B, and scaffolding member 4C. In this embodiment, the prefabricated scaffolding 1 forms a stepped platform that allows access to the top of the cubicle 2 using a commercially available work platform 5. The number of scaffolding members 4 is not limited to this; a different number of scaffolding members 4 may be used, as shown in Figure 9 (described later), or a configuration without a work platform 5 may be used. Here, we will describe an example of work performed on the top surface of the cubicle 2. As shown in Figure 2(a), for example, multiple cubicles 2 are arranged adjacent to each other in the electrical room 6, and above them, cable racks 7 for laying electrical wiring may be provided. Workers then ascend and descend to the top surface of the cubicle 2 to perform tasks such as repairing the cable racks 7 or inspecting the electrical wiring. In other words, in this embodiment, the cable racks 7 or the wiring laid therein are assumed to be the objects of work. Note that Figure 2 is a schematic representation to illustrate the arrangement of electrical equipment and may not necessarily correspond to the actual scale, and other electrical equipment besides the cubicle 2 may also be arranged alongside it. In this case, as shown in Figure 2(b), the width (W1) of the passage 8A between adjacent cubicles 2 and the width (W2) of the passage 8B between opposing cubicles 2 are kept to the minimum necessary to maximize the capacity of the electrical room 6. For example, the width of passage 8A (W1) is approximately 600 mm, and the width of passage 8B (W2) is approximately 1000 mm. In other words, the usable space during work may be limited near electrical equipment such as the cubicles 2 that are to be lifted and lowered. Therefore, with conventional portable work platforms, it may be impossible to transport them into the electrical room 6 using the passageway 8 or to install them near the cubicle 2. Furthermore, using typical scaffolding made of single-pipe scaffolding presents problems such as delays in the start of work and high costs, as mentioned above. Additionally, from a safety standpoint, the use of ladders and step ladders may be prohibited, or the types of work that can be performed may be limited. Therefore, in this embodiment, a prefabricated scaffolding 1 that can be easily installed while ensuring safety is employed. As shown in Figure 3, the fixing member 3 of the prefabricated scaffolding 1 has two column members 31 arranged along the wall surface of the cubicle 2, and multiple inter-column connecting members 32 connecting the column members 31 at multiple vertically separated positions. The column members 31 are formed as L-shaped flat plates in side view, with the shorter side of the L fixed to the upper surface of the cubicle 2, and the longer side extending vertically along the wall surface. In other words, in this embodiment, the fixing member 3 is directly fixed to the cubicle 2. Furthermore, in this embodiment, the fixing member 3 is i