Lifting hardware and insulated suspended scaffolding

Abstract

This invention provides a means to improve the work efficiency of constructing suspended scaffolding. [Solution] A suspension fitting A for use in an insulated suspended scaffolding using a suspension rope C comprises at least a fixing part 10 that can be fixed to the suspension partner B, a connecting part 20 to which one end of the suspension rope C can be connected, and a moving mechanism 30 that allows the connecting part 20 to move relative to the fixing part 10 at least in the vertical direction. This suspension fitting A integrates the functions of a clamp and a turnbuckle, making it ideal for installing suspended scaffolding in narrow spaces. Furthermore, by using a screw mechanism in the relative movement mechanism 30 of the connecting part 20 relative to the fixing part 10, the relative position of the connecting part 20 can be finely adjusted, allowing for easy and quick tension adjustment of the suspension rope C.

Description

Technical Field

[0001] The present invention relates to a hanging fitting used for an insulating hanging scaffold and an insulating hanging scaffold, and is suitable for use in an insulating hanging scaffold used, for example, in repair work of structures (such as overpasses) above railways. The present invention relates to a hanging fitting and an insulating hanging scaffold suitable for use in an insulating hanging scaffold.

Background Art

[0002] When constructing a hanging scaffold for repair work of structures (such as overpasses) above railways, the use of a metal chain is prohibited for electric shock prevention, and instead, a fiber rope having insulation is used (Patent Document 1).

[0003] Since this fiber rope does not have an appropriate tension adjustment mechanism, once the hanging length is determined, there is a problem that fine adjustment cannot be performed with the rope under tension. In addition, when constructing a hanging scaffold above a railway, there is no separation between the structure and the overhead line, and there are also sites where the space between the hanging object (also called a hanging point, a hanging end, etc.) such as a bridge girder and the scaffold board is extremely narrow, about 500 mm to 600 mm. At the site, even if a slight adjustment of about 50 mm is desired, an adjustment fitting such as a turnbuckle for level adjustment (at least 500 mm or more at the shortest) as described in Non-Patent Document 1 has a problem that the overall length is too long and cannot be physically used.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Non-Patent Documents

[0005]

Non-Patent Document 1

[0006] Therefore, one of the objectives of the present invention is to provide a means that can improve the work efficiency of constructing suspended scaffolding. [Means for solving the problem]

[0007] The present invention, made to solve the above problems, is a suspension fitting for use in an insulated suspended scaffolding using a suspension rope, characterized by comprising at least a fixing part that can be fixed to the object to be suspended, a connecting part that can connect to one end of the suspension rope, and a moving mechanism that allows the connecting part to move relative to the fixing part at least in the vertical direction. Furthermore, the present invention may also provide the moving mechanism with a screw-type structure. Furthermore, the present invention comprises a fastening hole provided in the fixed part and a screw shaft that can move vertically by screwing into the fastening hole, and the screw shaft before The device may be configured by attaching the aforementioned connecting parts. Furthermore, the present invention may further include a swivel interposed between the screw shaft and the connecting portion. Furthermore, the present invention may also be configured as an insulated suspended scaffolding by using the aforementioned suspension fittings and suspending the scaffolding board from the object to be suspended using an insulating suspension rope. [Effects of the Invention]

[0008] According to the suspension fitting of the present invention, the connecting part for connecting the suspension rope can be moved relative to the fixing part that is fixed to the object to be suspended, at least in the vertical direction. Therefore, even in narrow spaces between the object to be suspended and the scaffolding board, the length of the suspension rope can be adjusted easily and quickly, ultimately improving the work efficiency of constructing the suspended scaffolding. [Brief explanation of the drawing]

[0009] [Figure 1] A schematic perspective view showing an example of a suspension fitting according to the present invention. [Modes for carrying out the invention]

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. [Examples]

[0011] <1> Overview (Figure 1) The suspension fitting A according to the present invention is a fitting for use in an insulated suspended scaffolding, and more specifically, it is a fitting that allows adjustment of the length of a suspension rope C for suspending a scaffolding board (not shown in Figure 1) from a suspension partner B.

[0012] <1.1> Suspension rope The suspension rope is a component used to suspend the scaffolding board from the object being suspended B, and is configured to have insulating properties. In this invention, the term "insulating suspension rope C" simply excludes configurations consisting solely of metal chains that pose a high risk of electric shock. In other words, the "insulating suspension rope C" used in this invention is not limited to configurations of "fully insulated ropes," but also includes configurations in which part or all of the suspension rope C is made of an insulating material (e.g., fiber), or configurations in which the outer circumference of a metal chain or the like is covered with an insulating material (e.g., resin).

[0013] <1.2> Components of each part (Figure 1) The suspension fitting A according to the present invention comprises at least a fixing part 10, a connecting part 20, and a moving mechanism 30. In addition, the suspension fitting A shown in Figure 1 further comprises a swivel 40. The details of each part will be described below.

[0014] <2> Fixing part (Figure 1) The fixing part 10 is a part for fixing the suspension fitting A according to the present invention to the suspension target B when constructing a suspended scaffold. In the present invention, the shape, structure, etc. of the fixing portion 10 are not particularly limited, and may be appropriately designed according to the shape of the member to be hung B, etc. Further, for the fixing portion 10, some or all of the parts may be diverted from known members also called catch clamps, steel frame clamps, hold clamps, etc., or a newly designed member may be used.

[0015] <2.1> Configuration example (Fig. 1) In this embodiment, the fixing portion 10 is composed of a main body portion 11 and a tightening portion 12. The main body portion 11 is about 50 mm in height and has a U-shaped portion extending in a bifurcated shape to the side, and a screw hole 111 penetrating vertically is provided on the upper side of the U-shaped portion. The tightening portion 12 is composed of a clamp bolt 121 that can be screwed into the screw hole 111 described above and a jaw portion 122 provided at the lower end of the clamp bolt 121. For example, when fixing the fixing portion 10 to the flange B1 of the steel material constituting the bridge girder, which is the object to be hung B, after inserting the U-shaped portion of the main body portion 11 into the flange B1, with the jaw portion 122 as the upper jaw and the lower side of the U-shaped portion as the lower jaw, the clamp bolt 121 may be rotated to sandwich the flange B1.

[0016] <3> Connecting portion (Fig. 1) The connecting portion 20 is a portion for connecting the suspension rope C that becomes the suspension strip. In the present invention, the shape, structure, etc. of the connecting portion 20 are not particularly limited, and any structure may be adopted as long as it has a structure and shape capable of connecting (including locking, folding back, etc.) the suspension rope C, such as an annular shape or a hook shape. In this embodiment, the connecting portion 20 is constituted by a hook, and the hook is attached to the lower end of a screwing shaft 32 that constitutes a moving mechanism 30 described later.

[0017] <4> Moving mechanism (Fig. 1) The moving mechanism 30 is a portion for making the connecting portion 20 movable relative to the fixing portion 10 at least in the vertical direction. In this invention, the shape and structure of the moving mechanism 30 are not particularly limited, and can be appropriately designed according to the shape of the member B that is the suspension partner of the suspended scaffolding. In this embodiment, the moving mechanism 30 is configured with a screw structure consisting of a fastening hole 31 and a screw shaft 32. In this embodiment, the fastening hole 31 is formed by providing screw grooves on the inner circumferential wall of a through hole that penetrates the top and bottom of the main body portion 11. Furthermore, the threaded shaft 32 is a 200mm long threaded bolt with screw threads that can be screwed into the aforementioned fastening hole 31. If the screw shaft 32 (length: 200 mm) is screwed into the main body 11 (thickness: 60 mm) so that approximately the center of the screw shaft 32 fits inside, the connecting part 20 will be able to move approximately 70 mm in each of the vertical directions of the hanging bracket A.

[0018] <5> Swivel (Figure 1) The swivel 40 is a part that prevents the rotation of the screw shaft 32 from being transmitted to the scaffolding board. In the present invention, the position where the swivel 40 is provided is not particularly limited and may be provided on the suspension fitting A according to the present invention, or on the suspension rope C or scaffolding board. In this embodiment shown in Figure 1, the swivel 40 is interposed between the lower end of the screw shaft 32 and the connecting portion 20.

[0019] <6> Usage example (powdered powder) An example of a method for installing a suspended scaffolding using the suspension fitting A according to the present invention is described below.

[0020] (1) Installation of hanging bracket A Using existing structures such as bridge piers as scaffolding, the suspension fitting A according to the present invention is fixed to the object to be suspended B. Typically, four lifting brackets A are used when installing a single scaffolding plank. In this case, each suspension fitting A may be positioned so that the connecting portion 20 can move vertically, with approximately the middle portion of the screw shaft 32 fitted into the fastening hole 31.

[0021] (2) Arrangement of scaffolding planks One end of the suspension rope C is connected to each suspension fitting A, and the other end of the suspension rope C is attached to the scaffolding board. Then, the scaffolding board is lowered and positioned. At this time, when adjusting the length of each suspension rope C (i.e., adjusting the tension of the suspension rope C or adjusting the level of the scaffolding board) using the suspension fitting A according to the present invention, the connecting part 20 can be moved up and down by rotating the screw shaft 32 with an electric screwdriver fitted with a socket for threaded rods.

[0022] (3) Repeat the work Using the already installed scaffolding planks as a base, the above-mentioned tasks (1) and (2), as well as the task of connecting the scaffolding planks together, are repeated as needed to sequentially install new scaffolding planks and construct a suspended scaffold.

[0023] <7> summary As described above, the suspension fitting A according to the present invention has at least one of the effects described below. (1) The suspension fitting A according to the present invention integrates the functions of a clamp and a turnbuckle in a compact size, making it ideal for installing suspended scaffolding in confined spaces. (2) By using a screw mechanism in the relative movement mechanism 30 of the connecting part 20 with respect to the fixed part 10, the relative position of the connecting part 20 can be finely adjusted, so that the tension of the suspension rope C can be adjusted easily and quickly. (3) By interposing the swivel 40 between the screw shaft 32 and the connecting part 20, when adjusting the length of the suspension rope C after the scaffolding board is installed, the rotation of the screw shaft 32 is not transmitted to the suspension rope C or the scaffolding board. [Examples]

[0024] [Other variations] In addition, the suspension fitting A according to the present invention may have the following structure. (1) In the moving mechanism 30, no screw grooves are provided in the through hole that penetrates the top and bottom of the main body 11, and nuts are provided on the upper and / or lower part of the main body 11 that can communicate with the through hole and into which the screw shaft 32 can be screwed. (2) A configuration in which a wedge mechanism is provided as the fixing part 10. [Explanation of symbols]

[0025] A: Hanging hardware 10: Fixed part 11: Main body 111: Screw hole 12: Fastening part 121: Clamp bolt 122: Jaw 20:Connection part 30: Movement mechanism 31: Fastening hole 32: Screw shaft 40: Swivel B: The person being lynched C: Suspension rope

Claims

1. A suspension fitting used for an insulated suspended scaffolding that uses suspension ropes, A fixing part that can be secured to the object being lifted, A connecting part to which one end of the aforementioned suspension rope can be connected, A moving mechanism is provided that allows the connecting portion to move relative to the fixed portion at least in the vertical direction. It must have at least the following: The aforementioned moving mechanism is a screw structure consisting of a fastening hole provided in the fixed part and a screw shaft that can move vertically by screwing into the fastening hole. The connecting portion is attached to the screw shaft, Lifting hardware for insulated suspended scaffolding.

2. The invention is further characterized by comprising a swivel interposed between the screw shaft and the connecting portion. A suspension fitting for an insulated suspended scaffolding as described in claim 1.

3. The suspension fitting described in claim 1 or 2 is used, and the suspension between the object to be suspended and the scaffolding board is provided by an insulating suspension rope. Insulated suspended scaffolding.

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