JP7426704B2 - Main rope support - Google Patents

Description

The present invention relates to a main rope support for tensioning a main rope on a high-altitude scaffold.

A plurality of main rope supports are erected at predetermined intervals on a high-altitude scaffold temporarily erected at a construction site, and the main rope is stretched between the main rope supports.
As disclosed in Patent Document 1, such a main rope support has a clamp attached to the lower part of the support main body, and a main rope (the rope itself or a hook provided at the end of the rope) is connected to the upper part of the support main body. A main rope hook is provided, and a carrying handle is provided in the middle of the support main body, and the support is configured to be fixed to the scaffolding board with the clamp.

Utility model registration No. 3204834

The technology in the above-mentioned patent document allows the main rope to be firmly stretched at a height of about 1 m from the scaffold, and when the worker attaches the lifeline to the main rope and bends down to work, the main rope is placed close to the worker's line of sight. This makes it easy to check the connection of the lifeline and ensure the connection. However, the type of lifeline has changed from one attached to the waist to a harness type that comes out from the back, and a main line of one height is no longer sufficient to ensure the connection of the lifeline. ing.

An object of the present invention is to provide a main rope support that can solve the problems of the prior art.
SUMMARY OF THE INVENTION An object of the present invention is to provide a main rope strut that can have multiple main rope tension heights.

The concrete means for solving the problems in the present invention include a cylindrical column main body 3, a clamp 5 attached to the lower part of the column main body 3 and fixed to the scaffolding member T, and a clamp 5 installed on the upper part of the column main body 3. A first master rope hook 6 is provided between the clamp 5 and the first master rope hook 6 to connect the master rope P; The first main rope hook (6) is set at a height of 1.3 to 1.7 m from the clamp (5), and the second main rope hook (7 ) is characterized in that the height from the clamp (5) is set to 0.7 to 1.2 m .

According to the present invention, the second parent rope hook is provided in addition to the first parent rope hook, and the parent rope tension height can be set to a plurality of heights. In addition, when the worker is wearing a harness and the lifeline comes out from his back, the lifeline can be connected to the 1.3 to 1.7m high main line P attached to the first main line hook 6, and the worker can carry out work. When a worker attaches a lifeline to his or her waist belt, the lifeline can be connected to the 0.7 to 1.2 m high main line P attached to the second main line hook 7, making it ideal for lifelines of various heights. It can be connected to a main rope at a height close to .

FIG. 1 is a perspective view showing a first embodiment of the present invention. It is a front view of a parent rope support. FIG. 3 is a side view of the main rope support. FIG. 3 is a rear view of the main rope support. FIG. 3 is a plan view of the main rope support. It is a bottom view of a parent rope support. It is a front explanatory view of a parent rope tensioning state. It is a side explanatory view of a parent rope tension state. It is a perspective view showing a 2nd embodiment of the present invention. It is a front view of a parent rope support. FIG. 3 is a side view of the main rope support. FIG. 3 is a rear view of the main rope support. FIG. 3 is a plan view of the main rope support. It is a bottom view of a parent rope support.

Embodiments of the present invention will be described below based on the drawings.
In Figures 7 and 8, a high scaffold temporarily installed at a construction site has a plurality of main rope supports 1 erected at predetermined intervals on a scaffold member T, and a main rope P is stretched between the main rope supports 1. It will be done. Each main rope support 1 is provided with main rope hooks 6 and 7 at two upper and lower locations.
The first main rope hook 6 is set at a height of around 1.5 m (or 1.3 to 1.7 m) from the scaffolding member T, and the tension height of the main rope P is set to the height of the back of a standing worker or The second main rope hook 7 is set at a height of around 0.9 m (or 0.7 to 1.2 m) from the scaffolding member T, close to eye level, and the tension height of the main rope P is set at a height of about 0.9 m (or 0.7 to 1.2 m) from the scaffolding member T. Close to the worker's waist height or the eye level of a bent worker.

The main rope support 1 of the first embodiment shown in FIGS. 1 to 6 includes a support main body 3, a clamp 5, a first main rope hook (upper main rope hook) 6, and a second main rope hook (intermediate main rope hook). )7.
The support main body 3 is a cylinder with a square cross section, and is formed by extruding aluminum or by bending a sheet metal into four corners, and the clamp 5 is made of aluminum, iron, or the like. The lower part of the column main body 3 is diagonally bolted to this clamp 5.

The clamp 5 has a U-shape when viewed from the side, and clamps the side edges of the scaffolding member T from above and below, and clamps the scaffolding member T with the clamp screw 11 screwed onto the upper side, so that it can be firmly attached to the scaffolding member T. Fixed.
The back of the clamp 5 is attached to the lower part of the column body 3, and this back surface is inclined outward from the vertical plane so that the upper side is outward than the bottom, so that the upper part of the column body 3 is more clamped than the lower part. The pillar body 3 is inclined in a direction away from directly above the scaffolding member T, so that the pillar body 3 does not become an obstacle in the space above the scaffolding member T.

The first master rope hook 6 has a fitting portion 6a that is substantially gate-shaped (U-shaped) when viewed from the front, and a bar 6b that is bent into a substantially U-shape or U-shape when viewed from the front. The fitting part 6a is removably fitted to the top of the column main body 3 from above, is fixed with a bolt B, and closes the upper end of the cylindrical column main body 3.
The middle part of the bar 6b is spaced apart from the upper surface of the fitting part 6a, and a master rope insertion hole 9 through which the master rope P passes is formed therebetween. The main rope P can be tied to the middle part of the bar 6b.

The second master rope hook 7 has a fitting portion 7a that is U-shaped (substantially gate-shaped) in plan view and is removably fitted to the support main body 3 from the horizontal direction, and a fitting portion 7a that is substantially U-shaped or U-shaped in plan view. The rod 7b is bent into a shape and its both ends are fixed to the fitting part 7a, and a master rope insertion hole 9 is formed by the fitting part 7a and the rod 7b.
In other words, the second master rope hook 7 has a shape that allows the first master rope hook 6 to be used, and instead of fitting the fitting part 7a into the column main body 3 from above, it is fitted from the horizontal direction to tighten the bolt. It is fixed to the pillar body 3 with B. The second master rope hook 7 may have the fitting part 7a, the bar 7b, and the bolt holes of the fitting part 7a all formed the same as those of the first master rope hook 6.

Furthermore, the first master rope hook 6 and the second master rope hook 7 have approximately the same strength for stretching the master rope P, and one master rope P is used as the main rope and the other master rope P is used as an auxiliary. Alternatively, an auxiliary rope may also be employed.
In order to fix the second master rope hook 7, bolt holes for passing through the bolts B are formed in the support main body 3, but bolt holes may be formed at multiple locations at the mid-height of the support main body 3. For example, the height of the second main rope hook 7 can be changed, or a plurality of second main rope hooks 7 can be provided.

A handle 12 for carrying is provided between the first main rope hook 6 and the clamp 5 of the support main body 3. The handle 12 has a crank shape, and both ends are rotatably held by fasteners 13, and the handle 12 is arranged so as to straddle the center of gravity of the master rope support 1.
A master rope support 1 according to the second embodiment shown in FIGS. 9 to 14 has a support main body 3, a clamp 5, a first master rope hook 6, a second master rope hook 7, and a handle 12. The shape of the second main rope hook 7 is different from the main rope support 1 of the first embodiment.

The second master rope hook 7 of the second embodiment is formed of a bar 7c which is bent into a substantially U-shape or a substantially U-shape when viewed from above and whose both ends are fixed to the support main body 3. This rod 7c needs to be fixed to the support main body 3 by welding, but since its shape is simple and small, manufacturing is simple and inexpensive.
The main rope support 1 shown in the first and second embodiments has a cylindrical support main body 3, a clamp 5 attached to the lower part of the support support main body 3 and fixed to the scaffolding member T, and an upper part of the support support main body 3. A first main rope hook 6 is provided in the main rope body 3 and connects the main rope P, and a first main rope hook 6 is provided in the middle of the strut body 3 between the clamp 5 and the first main rope hook 6 and connects the main rope P. Since it has a second main rope hook 7, the main rope P can be connected to the first main rope hook 6 and stretched at the height of the first main rope hook 6, and in addition, the main rope P can be connected to the first main rope hook 6. It can be connected to the second main rope hook 7 and stretched at the height of the second main rope hook 7, and the lifeline can be connected to the main ropes at multiple heights close to the optimum on the high-altitude scaffold. , it is possible to ensure the connection of lifelines.

The height of the first main rope hook 6 from the clamp 5 is set to 1.3 to 1.7 m, and the height of the second main rope hook 7 from the clamp 5 is set to 0.7 to 1.7 m. Since the height is set to 2m, if the lifeline comes out from the back when the worker is wearing a harness, connect the lifeline to the 1.3 to 1.7m high main line P attached to the first main line hook 6. If the worker attaches the lifeline to his or her waist belt, the lifeline can be connected to the 0.7 to 1.2 m high main line P attached to the second main line hook 7. A lifeline at a height can be connected to a parent line at a height close to the optimum.

Furthermore, the first master rope hook 6 has a fitting part 6a that is removably fitted to the top of the column main body 3 from above, and a fitting part 6a that is bent into a substantially U-shape or a substantially U-shape in plan view and has both ends fitted. A rod 6b is fixed to the mating part 6a, and a master rope insertion hole 9 is formed by the mating part 6a and the bar 6b. The fitting part 7a has a fitting part 7a which is removably fitted, and a bar 7b bent into a substantially U-shape or a substantially U-shape in plan view and having both ends fixed to the fitting part 7a. Since the main rope insertion hole 9 is formed by the rod material 7b, the first main rope hook 6 and the second main rope hook 7 can be manufactured and assembled easily and easily.

Furthermore, since the second main rope hook 7 is formed of a bar 7c that is bent into a substantially U-shape or a substantially U-shape in plan view and whose both ends are fixed to the support main body 3, the second main rope hook 7 can be manufactured and assembled easily and inexpensively.
Note that the present invention is not limited to the above embodiments, and the shapes, configurations, combinations, etc. of members can be changed.

For example, the first master rope hook 6 and the second master rope hook 7 may be formed by forming a rod into a ring and welding the ring to the fitting portion.
In addition, the first master rope hook 6 and the second master rope hook 7 are made of bar material and form two question mark-shaped hooks, and these hooks are fixed to two sides of the fitting part with a gap between them. However, the intermediate part of the main rope P may be constructed so that it can be engaged with two hooks simultaneously through the gap.

The length of the strut body 3 may be approximately 2 m, and the number of main rope hooks attached to the midway portion of the strut body 3 may be two or more.
In the present invention, when the height of the second main rope hook 7 from the clamp 5 is set to 0.7 to 1.2 m, this is approximately the same height as in the prior art. 3 was extended to a length of around 1.5 m from the top of the high-altitude scaffold to the top of the column main body 3, and a new first main rope hook 6 was installed at the top of the long column main body 3. It can also be recognized that

1 Main rope support 3 Support main body 5 Clamp 6 Main rope hook 6a Fitting part 6b Bar 7 Main rope hook 7a Fitting part 7b Bar 9 Main rope insertion hole 11 Clamp screw 12 Handle 13 Fastener P Main rope T Scaffolding member B bolt

Claims (4)

A cylindrical column main body (3), a clamp (5) attached to the lower part of the column main body (3) and fixed to the scaffolding member (T), and a clamp (5) provided on the upper part of the column main body (3). A first main rope hook (6) that connects the main rope (P), and a main rope hook (6) that is provided in the middle of the strut body (3) between the clamp (5) and the first main rope hook (6). It has a second main rope hook (7) that connects the rope (P),
The first main rope hook (6) is set at a height of 1.3 to 1.7 m from the clamp (5), and the second main rope hook (7) is set at a height of 1.3 to 1.7 m from the clamp (5). The main rope support is characterized in that the length is set at 0.7 to 1.2 m . The second master rope hook (7) has a fitting part (7a) that is removably fitted to the support main body (3) from the horizontal direction, and a fitting part (7a) that is bent into a substantially U-shape or a substantially U-shape in plan view. It has a rod (7b) whose both ends are fixed to the fitting part (7a), and a master rope insertion hole (9) is formed by the fitting part (7a) and the rod (7b). The main rope support according to claim 1, characterized in that: The first master rope hook (6) has a fitting part (6a) that is removably fitted to the top of the column main body (3) from above, and is bent into a substantially U-shape or a substantially U-shape when viewed from the front. and a rod (6b) whose both ends are fixed to the fitting part (6a), and a master rope insertion hole (9) is formed by the fitting part (6a) and the rod (6b). The main rope support according to claim 1 or 2, characterized in that: The second main rope hook (7) is formed of a bar (7b) bent into a substantially U-shape or a substantially U-shape in plan view and having both ends fixed to the support main body (3). The main rope support according to claim 1 .

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