JPH0631061Y2 - Safety net fixture - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention provides a safety net stretched for the safety of workers at a steel frame construction site in a horizontal direction on a steel frame, especially a steel beam formed of H-shaped steel. It relates to a safety net attachment for supporting.

[Conventional technology]

Steel beams (1) (1) (1) in the form of a square grid with H-shaped steel
As a means for forming (1) and horizontally stretching the safety net (2) in the square, conventionally, as shown in FIG. 9, a sleeve piece (3a) of a U-shaped metal fitting (3) having a U-shaped vertical cross section. ) (3b) From the outside of one sleeve piece (3a) to the inside of the other sleeve piece (3b), screw the bolt (4), and attach the net frame to the outer surface of the U-shaped intermediate piece (3c). A net attachment is formed by fixing the hooks (5) for locking, and as shown in FIGS. 7 and 8, the net hooks of the net hooks of the net fittings are hooked (5) on the net frame ( 6), fit the U-shaped opening of the U-shaped bracket (3) into the upper flange (1a) or lower flange (1b) of the H-shaped steel forming the steel beam (1), and screw in the bolt (4), Upper flange (1a) or lower flange depending on the tip of bolt (4)
(1b) is pressed tightly and the net attachment is stretched horizontally on the steel grid beam (1) having a square grid shape.

Despite the installation of the safety net as described above, there are a large number of fall accidents of workers working on the steel beam (1). Therefore, the Hypothetical Industrial Association of Japan is a "safety net guideline".
We want to support the net frame rope (6) of the net (2) to the steel beam (1) by the net suspension rope (7) at 8 points or more. It is instructed to fix it to the steel beam (1) every 30 cm, but the net frame rope (6) of the safety net (2) is flexible and bends as shown in FIG. ) And the net frame rope (6), a large gap (8) is generated, and there is a risk that an operator working on the steel beam (1) may fall from the gap (8). When the deck plate (9) is installed on the steel beam (1), the net attachment as shown in FIG. 9 is attached to the steel beam (1), that is, the H-shaped steel upper flange (1a) as shown in FIG. It is dangerous because the deck plate (9) is not stable when the net (2) is stretched by attaching it to (). Then, attach the net attachment to the lower flange of H-shaped steel (1b).
The steel beam (1), that is, the H-shaped steel (h) has a height (h) of 1 m or more when it is attached to the upper flange (1a).
Even if I tried to tighten the bolt (4) to attach the net fitting to (1b), it was not convenient and could not be tightened sufficiently, and the net fitting fell off in some cases, which also caused an accident for workers. Was there.

[Problems to be Solved by the Invention]

According to the present invention, when the safety net (2) is horizontally stretched in the squares of the steel frame beam formed in the shape of a plane grid, the gap (8) between the steel frame beam (1) and the net frame rope (6) is It can be made small so that humans cannot fall from the gap.
In addition, the fixture attached to the net can be fixed and removed without falling off the steel beam, and the safety net can be attached according to the above "Safety Net Guideline", which is an epoch-making accident for workers. It is intended to provide a safety net attachment which can be reduced in number.

[Means for Solving the Problems]

The present invention has the following means in order to solve the above problems. That is, a pair of mounting members (A) and (B) for symmetrically mounting to either the upper or lower flange of the H-shaped steel and the pair of mounting members are removably tightly fixed to the upper or lower flange of the H-shaped steel. One of the attachment members (A) fixedly projects the net frame rope attachment hooks (12) at a plurality of longitudinal positions on one side surface of the attachment main body (11). Attaching a U-shaped fitting piece (13) capable of fitting to a flange of H-shaped steel on the surface opposite to the mounting surface of the hook,
A wire insertion ring portion (15) is projectingly fixed to the lower part near the center of the attachment main body in the longitudinal direction, and a chain (27) is wound around and fixed to the other attachment member (B). ) Hooks (2
(2) is fixed and projected, and a wire insertion ring is projected near the end in the longitudinal direction and near the center, and the hook is attached to the surface opposite to the attachment surface of the hook in the same U-shape as the attachment main body (11). Wire (C) with locking device for tight binding, which is formed by projecting joint piece (23)
Is the ring part (1) for wire insertion of one mounting member (A).
5), through the H-shaped steel (1), penetrating the wire insertion ring part of the other mounting member (B) and binding the tip locking part (32) to the chain (27) so that it can be locked. Safety net attachment made up.

[Action]

The steel frame beam is assembled with H-shaped steel (1) in the shape of a plane grid, the safety net (2) is stretched in the grid, and the net frame rope (6) of the safety net (2) is instructed as "safety net guideline". Therefore, when the net suspension rope (7) supports the steel beam (1) at eight points, the mounting members (A) and (B) are located in the gap between the supporting points and the gap is squeezed. Mounting member (A)
By locking the net frame rope (6) of the net (2) to the respective hooks (12) (22) for attaching the net frame rope of (B), the locking interval and the net frame rope (6) and the steel beam The gap with (1) is further fitted to prevent the human body from falling through the gap, and the pair of mounting members (A) and (B) is firmly fixed to the steel beam (1) by the wire with a locking tool (C). However, the attachment member is prevented from falling off and can be removed.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

A pair of mounting members (A) and (B) for mounting the steel frame beam (1), that is, the upper flange (1a) or the lower flange (1b) of the H-shaped steel at symmetrical positions, and the pair of mounting members (A) (B). )
On the outer side of the protrusions (1a ′) (1a ″) protruding on both sides with respect to the center piece (1c) of the upper flange (1a) of the H-shaped steel (1), or at the center of the lower flange (1b). It is mounted at a symmetrical position outside the protrusions (1b ') (1b ") protruding on both sides with respect to the piece (1c), and both mounting members (A) and (B) are firmly fixed to the H-shaped steel (1). And a wire (C) with a locking tool for removably binding in the closed state.

One of the mounting members (A) is, as shown in FIGS. 3 and 4,
Net frame rope locking hooks (12), (12), (12) and (12) are fixed to a plurality of locations on one side of the pipe-shaped fixture main body (11) to project laterally, and the hook ( C-shaped fitting pieces (13) and (13) are fixed to the side surface opposite to the mounting surface of 12). The U-shaped fitting pieces (13) and (13) are the protrusions (1a ') (1) of the upper flange (1a) or the lower flange (1b) of the steel beam (1), that is, H-shaped steel.
a)) or (1b ′) (1b ″) is formed with a vertical gap so that the upper sleeve piece (13a) and the lower sleeve piece (13b) are connected in a U shape by the intermediate piece (13c). Has been formed. Mainly pipe fittings (11)
Mainly at the center of the longitudinal direction of the
1) Penetrate the top and bottom of the
4) is attached and the wire insertion ring part (15) is exposed on the lower surface. (9) is a deck plate, and (16) is a nut.

One mounting member (A) is configured as described above, while the other mounting member (B) is, as shown in FIGS. 3 and 4, one of the pipe-shaped mounting fixture main bodies (21). Net frame rope hooks (22) (22) (22) (22) at multiple points on the side surface in the longitudinal direction.
While fixing and projecting, eye wire (24) (24) (24) (24) wire insertion on the same side as the above, near both longitudinal ends of the main body (21) and near the center, respectively. The ring parts (25a) (25b) (25c) (25d) are projected. (26) is a nut. In the illustrated embodiment, the wire insertion ring portions (25a) (25b) (25c) (25d) are hooked to the net frame rope locking hook.
(22) (22) (22) Although an example of projecting in the same direction as the projecting direction of (22) was shown, it does not necessarily have to be in the same direction, and it may project downward, diagonally downward, diagonally upward, or upward. You may let me. Further, U-shaped fitting pieces (23) and (23) are fixed to the side surface of the hook (22) opposite to the mounting surface. The mounting side and configuration of the U-shaped fitting piece are the same as those described for the one mounting member.

A chain (27) is wound around the pipe-shaped fixture main body (21) over substantially the entire length thereof, and both ends of the chain (27) are fixed to the pipe-shaped fixture main body by fasteners (28) such as shackles or rings.

The wire with a lock (C) is hooked on both ends of the wire (31).
A locking tool such as (32) is attached and inserted through the wire insertion link portion (15) of the one attachment member (A).

As shown in FIGS. 3 and 4, the U-shaped fitting pieces (13), (13), (23) (of the one mounting member (A) and the other mounting member (B) configured as described above, respectively. 23) is the protrusion (1a ') (1a ") of the upper flange (1a) or lower flange (1b) of H-shaped steel (1)
Or, they are fitted to (1b ′) (1b ″) so that both mounting members (A) and (B) are in symmetrical positions with the H-shaped steel (1) interposed therebetween, and the locking wire (C) is attached to the H-shaped steel ( 1) Insert the wire insertion rings (25a) (25b) of the other mounting member (B) through the lower part of 1), and further insert the wire insertion rings (25c) (25d) and rotate them upward to hook ( 32) is engaged with the chain (27) to detachably fix the mounting members (A) and (B) to each steel beam (1), that is, H-shaped steel.

It should be noted that the mounting members (A) and (B) are provided in pairs of one or more for each steel beam (1) (1) (1) (1) constituting one square.

Next, as shown in FIGS. 1 and 2, the net frame rope (6) of the safety net (2) is attached to the steel beams (1) (1) ( 1) The net frame of the mounting members (A) and (B) which are supported by (1) at 8 points and which are attached to the steel frame beams (1), (1), (1) and (1) with the net frame steel (6). The safety net (2) is stretched in each square by being locked to the rope locking hooks (12) and (22).

Although the pipe-shaped fixture main body (11) (21) of the attachment members (A) and (B) shown in the drawing is a round pipe-shaped one, a square pipe-shaped one may be used.

[Effect of device]

Since the present invention has the above-described solid structure, when the safety net is horizontally stretched over the squares of the steel beam formed in a square grid, the gap formed between the steel beam and the net frame rope is It is possible to make it so small that a person cannot fall through the gap, and the fixture to which the net is attached is fixed without dropping from the steel beam, and it can also be removed. This has the effect of preventing personal accidents such as falling accidents.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 shows a safety net attaching tool according to an embodiment of the present invention attached to a steel beam formed in the shape of a plane grid to extend a safety net. FIG. 2 is a plan view showing a state, FIG. 2 is a vertical cross-sectional view of FIG. 1 XX ′, and FIG. 3 is a partially enlarged plan view of a safety net attachment of one embodiment of the present invention attached to a steel beam. Fig. 4 and Fig. 3 are Y-
FIG. 5 is a front view of the eyebolt, FIG. 6 is a perspective view showing an example of a shackle, FIG. 7 is a plan view showing a conventional safety net attaching means, and FIG. Figure Z-
Fig. 9 is an enlarged vertical sectional view of Z ', and Fig. 9 is a perspective view of a known net attachment tool. (A) …… Mounting member, (B) …… Mounting member, (C) ……
Wire with locking device, (1) …… Steel beam (H-shaped steel), (11)
...... Mounting body of mounting member (A), (12) …… Hook for mounting net frame of mounting member (A), (13) …… U-shaped fitting piece of mounting member (A), (15)… … A wire insertion ring part of the mounting member (A), (21) …… Mainly a mounting member of the mounting member (B), (22) …… A net frame mounting hook of the mounting member (B),
(23) …… U-shaped fitting piece of the mounting member (B), (25a) (25b) (25
c) (25d) …… Wire insertion ring part, (27) …… Chien, (32) …… Locking part.

Claims (1)

[Scope of utility model registration request] 1. A pair of mounting members (A) and (B) for symmetrically mounting to either the upper or lower flange of the H-section steel, and the pair of mounting members being attachable to or detachable from either the upper or lower flange of the H-section steel. Wire (C) with a locking device for binding and fixing
And one of the mounting members (A) is mainly a mounting tool (11)
The net frame rope attaching hooks (12) are fixedly projected at a plurality of longitudinal positions on one side surface, and a U-shaped fitting capable of fitting to a flange of H-shaped steel on the surface opposite to the mounting surface of the hook. Attach the piece (13), and fix the wire insertion ring part (15) projectingly below the vicinity of the center of the attachment main body in the longitudinal direction, and wind the chain (27) around the other attachment member (B). Net frame rope attachment hooks (22) are fixed and projected at a plurality of longitudinal positions on one side of the fixed fixture main body (21), and wire insertion ring portions are projected near the end in the longitudinal direction and near the center. However, the main part of the attachment is on the surface opposite to the attachment surface of the hook.
The same U-shaped fitting piece (23) as that of (11) is provided so that the wire (C) with a locking device for binding is a wire insertion ring portion (15), H of one attachment member (A). It is configured to pass through the wire inserting ring portion of the other mounting member (3) through the shape steel (1) and tightly bind the tip end locking portion (32) to the chain (27). Safety net attachment.