JPH07247700A - Protection net against falling article at construction site - Google Patents

Abstract

PURPOSE:To efficiently pitch a tent by connecting a pair of engagement clamp bars to the support fitting of a net mounting member, and fixing a net to a temporary frame or an erection tube at a construction site. CONSTITUTION:The upper and lower sides of a long-sized support fitting 3 is formed into engagement support sections 4. Then, each of engagement clamping bars 5 having one end rotatably coupled and a bulged holding section 6 at the other free end is coupled to the sections 4. Thereafter, the support fitting 3 is horizontally coupled to a fastener 20 at a construction site. As a result, the fitting 3 comes to have the coupling section 21 of the fastener 20 enter guide space 4c, thereby being supported on the fastener 20. Subsequently, the rod type member 15 of a net body 2 is inserted in the clamping bars 5 and 5. Then, the bars 5 rotate in an opening direction about the engagement section 4a of the fitting 3 as a support point. Consequently, the spring force of a spring member 7 turns the section 4a in a clamping direction and supports the section 4a in braced state. According to this construction, a net can be efficiently pitched and easily demounted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a falling object protection net for a construction site, and more particularly to a construction site used for attaching a falling object danger prevention net provided around the construction site to a temporary frame, an erection pipe or the like. Regarding the fallen object defense net.

[0002]

2. Description of the Related Art Conventionally, a net for preventing the danger of falling objects provided around a construction site has a large number of connecting rings provided at a predetermined interval around the connecting net and a connecting string of a required length. It was tied after wrapping it around a temporary frame, erection pipe, etc.

When the net for preventing the danger of falling objects is removed from the temporary frame, the erection pipe, etc., the connecting cords are unwound one by one.

By the way, the net for preventing the danger of falling objects is
Since it has to be widely stretched around the construction site, the work of attaching the net to the temporary frame, the erection pipe or the like using the connecting cord or connecting the nets was very inefficient. Therefore, there is currently a need for a convenient net or its appearance.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned conventional demands, the present invention shortens the net body to a net mounting metal fitting attached to a plurality of fixtures provided on a temporary frame, an erection pipe or the like. It can be installed on time, so that the net body can be efficiently stretched around temporary frames, erection pipes, etc. at the construction site.
Another object of the present invention is to obtain a falling object protection net which can be easily removed from the net attachment member when the stretched net body is not easily removed from the net attachment member.

[0006]

A falling object protection net for a construction site according to the present invention comprises a net mounting member and a net body detachably mounted on the net mounting member, and the net mounting member is vertically arranged. A long support metal fitting having an engagement support portion, and a pair having one end rotatably engaged with the engagement support portion of the support metal fitting and a bulging holding portion at a free end. In order to prevent the engaging and holding bars and the net body whose insertion end is sandwiched by these engaging and holding bars from coming off, both end portions are respectively locked to the holding portions and facing holding portions are provided. And a spring member that constantly urges in the holding direction.

[0007]

In the above structure, first, the pair of engaging and holding bars are mounted in advance on the support fittings of the net mounting member. Next, the support fittings are fixed to the temporary frame or the erection pipe at the construction site in the horizontal or vertical state from above or from the side.

Next, the end portion of the net body having the rod-shaped member is inserted into the pair of engaging and holding bars. Therefore, first, one end of each engaging and holding bar is projected from one of the ends of the support fitting, and the spring members are locked in their locking grooves. Then, each engaging and holding bar rotates in the holding direction by the spring force of the spring member, and the net main body is supported by each of the engaging and holding bars in a holding state. Next, each engaging and holding bar is slid in the opposite direction to make the other end of the engaging and holding bar project from the other end of the support fitting. Then, similarly to the above, another spring member is locked in the locking groove. In this way, when the spring members are respectively locked to both ends of each engaging and holding bar, the position of each engaging and holding bar is appropriately slide-adjusted.

[0009]

The present invention will be described in detail below with reference to the embodiments shown in the drawings.

In one embodiment shown in FIGS. 1 to 9,
X is a defense net that is stretched around the construction site. This protection net X is basically a net attachment member 1 slidably attached to a plurality of fixtures provided on a temporary frame, an installation pipe, etc., and a net detachably attached to the net attachment member 1. It consists of the main body 2.

Therefore, the net mounting member 1 is a long support metal fitting 3 having engaging support portions 4 and 4 respectively on the upper and lower sides.
And a pair of engagements, one end of which is rotatably engaged with the engagement support portions 4 and 4 of the support fitting 3 and which has bulging holding portions 6 on the free end side. Holding bars 5 and 5,
In order to prevent the net body 2 whose insertion end is sandwiched by these engaging and holding bars 5 and 5 from being pulled out, both ends of the claw-like shape are locked to the holding portions 6 and 6 and face each other. It is composed of a spring member 7 that constantly urges the holding portions 6 in the holding direction. Therefore, these constituent members will be described in detail.

First, the support fitting 3 will be described. In the present embodiment, the upper and lower engagement support portions 4 and 4 are formed in an end face C-shape, and are symmetrically connected to each other via a plate-shaped connecting portion 8 at the central portion. Engaging portions 4a each having a circular cross section are formed in a bulged shape at the opening-side ends of the engaging support portions 4 and 4. Further, upper and lower projecting walls 4b, 4b are appropriately provided in the vertical direction on the outer peripheral walls of the engaging support portions 4, 4. These upper and lower projecting walls 4b, 4b respectively face the plate-like connecting portion 8 and form a guide space 4c inside. And
A guide cutout portion 4d communicating with the guide space 4c is provided between the opposing end portions of the upper and lower projecting walls 4b, 4b.

Next, the engaging and holding bar 5 will be described. As shown in FIG. 1, a plurality of anti-slip grooves 9 are formed on the outer peripheral wall of the holding portion 6 of the engaging and holding bar 5 at required intervals in the longitudinal direction. These anti-slip grooves 9 look like screws as a whole in appearance.

Therefore, at one end of the engaging and holding bar 5,
An engaged portion 10 having an end face C-shaped engaging groove 10a that engages with the engaging portion 4a of the engaging support portion 4 of the support fitting 3 is formed in the longitudinal direction.

A spring locking groove 11 having a V-shaped cross section in the longitudinal direction is formed at an appropriate position between the engaged portion 10 and the free end side holding portion 6 connected to the engaged portion 10. Has been formed. The spring engagement groove 11 faces the inner wall of the engagement support portion 4 when the engagement holding bar 5 is engaged with the engagement support portion 4 of the support fitting 3. In that sense, the spring locking groove 11 is provided on the inner wall of the engaging and holding bar 5.

Next, as the spring member 7, a leaf spring is used in this embodiment, and it is possible to displace outwardly against the elastic force. The spring member 7 is formed in a C-shape as a whole, and claw portions 7a, 7a that engage with the spring locking groove 11 of the engaging and holding bar 5 are formed at both ends.

Next, the net body 2 will be described. The net body 2 is formed in a rectangular shape, and the upper and lower ends are covered with rod-shaped members 15, respectively, as shown in FIG.
The portion 5 is more bulged than the other portions. As the rod-shaped member 15, a wire rod, a synthetic resin rope, or the like is used. Further, annular metal fittings 16 are provided at appropriate positions on the peripheral end of the net body 2 with a required space. These annular metal fittings 16 are used when connecting the other net bodies 2 adjacent to each other using a string.

In the above structure, first, as shown in FIG. 6, the engaging portions 4a, 4a of the support fitting 3 of the net mounting member 1 are provided.
In advance, a pair of engaging and holding bars 5 and 5 are mounted respectively.
When the engaging and holding bar 5 is attached to the support fitting 3, the engaged portion 10 of the engaging and holding bar 5 is fitted to the engaging portion 4 a of the support fitting 3 from either end side of the support fitting 3. To Then, when the engagement groove 10a of the engaged portion 10 and the engagement portion 4a of the engagement support portion 4 are fitted to each other, the engagement holding bar 5 is slid so as to be inserted into the support fitting 3. Let

Next, in the present embodiment, the support fittings 3 are fitted horizontally to a plurality of fixtures 20 as shown in FIG. 1 provided on a temporary frame or an erection pipe at a construction site. In the support fitting 3, the fitting portion 21 of each fixture 20 is a guide space 4c.
It is slidably supported by the fixture 20 by properly entering into.

Next, as shown in FIG. 7, the end portion of the net body 2 having the rod-shaped member 15 is inserted into the pair of engaging and holding bars 5 and 5. When the end portion having the rod-shaped member 15 is inserted into the engaging and holding bars 5 and 5, the engaging and holding bars 5 and 5 rotate in the opening direction with the engaging portions 4a and 4a of the support fitting 3 as fulcrums.
Then, the insertion end of the net body 2 has a holding portion 6,
It projects from 6. The insertion end of the net body 2 is a holding portion 6,
When it projects from 6, it becomes a form held by the right and left holding portions 6, 6.

Therefore, first, one end of each of the engaging and holding bars 5 and 5 is projected from either end of the support fitting 3 and the spring member 7 is inserted into the engaging grooves 11 and 11 as shown in FIG. The claw portions 7a, 7a of the respective are locked. Then, the engaging and holding bars 5 and 5 rotate in the holding direction with the engaging portions 4a and 4a of the support fitting 3 as fulcrums by the spring force of the spring member 7.
The net body 2 is supported by each of the engaging and holding bars 5 and 5 in a held state.

Next, the engaging and holding bars 5 and 5 are slid to the opposite direction to make the other ends of the engaging and holding bars 5 and 5 project from the other end of the support fitting 3. Then, similarly to the above, the other spring member 7 is locked in the locking grooves 11, 11. When the spring members 7 are respectively locked to both ends of the engaging and holding bars 5 and 5 in this manner, the positions of the engaging and holding bars 5 and 5 are appropriately slide-adjusted.

The other end portion of the net body 2 is, as shown in FIG. 9, the net mounting member 1 positioned below as in the above.
Be attached to.

[0024]

As is apparent from the above description, the defense net of the present invention comprises a net mounting member and a net body detachably mounted on the net mounting member, and the net mounting member is vertically arranged. A long support metal fitting having an engagement support portion, and a pair having one end rotatably engaged with the engagement support portion of the support metal fitting and a bulging holding portion at a free end. In order to prevent the engaging and holding bars and the net body whose insertion end is sandwiched by these engaging and holding bars from coming off, both end portions are respectively locked to the holding portions and facing holding portions are provided. The net body can be attached to the net mounting member because it is composed of a spring member that constantly urges in the holding direction. Therefore, the net can be efficiently stretched around the temporary frame, the erection pipe, etc. at the construction site. Further, the stretched net main body does not easily come off from the net attaching member, and when the net main body is removed, it can be easily removed from the net attaching member.

In addition, when a plurality of anti-slip grooves are formed on the outer peripheral wall of the holding portion of the engaging and holding bar at a required interval in the longitudinal direction, the net body is separated from the net mounting member. If it does not come off easily, and if the net attachment member is slidably attached to multiple fixtures provided on the temporary frame, erection pipe, etc., the work of stretching the whole or removing each member will be significantly improved. To do.

[Brief description of drawings]

1 to 9 are schematic explanatory views showing an embodiment of the present invention.

FIG. 1 is an exploded perspective view.

FIG. 2 is a perspective view of a combined state.

FIG. 3 is a cross-sectional view of a support fitting.

FIG. 4 is a cross-sectional view of an engaging and holding bar.

FIG. 5 is a schematic perspective view of a net body.

FIG. 6 is an explanatory view of a state in which an engaging and holding bar is attached to a support fitting.

FIG. 7 is a schematic explanatory view of a state in which the end portion of the net body is inserted into each engaging and holding bar in FIG.

FIG. 8 is a schematic explanatory view of a state in which a spring member is locked to each engaging and holding bar in FIG. 7.

FIG. 9 is a schematic explanatory view showing an example of a usage state of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Net attachment member, 2 ... Net main body, 3 ... Support metal fittings, 4 ... Engagement support part, 5 ... Engagement holding bar, 6 ... Holding part, 7 ... Spring member, 9 ... Anti-slip groove, 10 ... Cover Engaging portion, 11 ... Locking groove, 15 ... Bar-shaped member, 20 ... Fixing tool.

Claims (4)

[Claims] 1. A net mounting member, and a net main body detachably mounted to the net mounting member,
The net attachment member has a long-shaped support fitting having upper and lower engaging support portions, one end of which is rotatably engaged with the engaging support portion of the support fitting, and the free end portion of which is expanded. Both ends are respectively locked to the holding portions so that the pair of engagement holding bars having the protruding holding portions and the net body whose insertion end portion is sandwiched by these engagement holding bars do not come out. And a falling object protection net at a construction site, which comprises a spring member that constantly urges opposing holding parts in the holding direction. 2. The falling object protection net for a construction site according to claim 1, wherein the engaging support portion of the support fitting is formed in a C-shaped end surface. 3. The anti-slip groove according to claim 1, wherein a plurality of anti-slip grooves are formed on the outer peripheral wall of the holding portion of the engaging and holding bar at predetermined intervals in the longitudinal direction. A falling object defense net at a construction site. 4. The fallen object at a construction site according to claim 1, wherein the net attachment member is slidably attached to a plurality of fixtures provided on a temporary frame, an erection pipe or the like. Defense net.