JP2000230319A - Stretching construction of protection net - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stretching construction of a protection net capable of surely fixing struts to the ground even in a narrow space. SOLUTION: A plurality of struts 11 are arranged around a building 12, and each of the struts 11 has a joint section projected in all directions. Guide pipes 17 are connected to the struts 11 by fitting joint hooks to the joint sections of the struts 11. Piles 21 are inserted in the guide pipes 17 and are driven in the ground 14 to erect the struts 11 on the ground 14 to bear. A handrail 22 is equipped with a horizontal member constituted in a expansible manner and joint claws provided to both ends of the horizontal member. The handrail 22 is connected to the struts 11 by fitting the joint claws to the joint sections of the struts 11 and, at the same time, the horizontal member can be freely moved in all directions with the joint claws as the centers. An interlock section is projected to the circumference of the horizontal member, and a protection net 29 is fixed to the interlock section and is stretched.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protection net for preventing a tool or the like from falling off a site when building a building. It concerns the installation structure.

[0002]

2. Description of the Related Art As a conventional protection net extending structure, for example, a structure as shown in FIG. 7 is known. In this conventional configuration, as shown in FIG. 7A, a plurality of columns 41 are arranged around a building, and each column 41 is driven upright into the ground 42 at the lower end. Further, a pair of horizontal L-shaped connecting portions 43 are provided on the support column 41 at predetermined heights.

As shown in FIG. 7B, mounting holes 45 are formed at both ends of the handrail 44. By attaching the mounting holes 45 at both ends to the connecting portions 43 of the adjacent columns 41, the handrail 44 is provided between the columns 41. As shown in FIG. 7A, the protection net 46 is hung and stretched over a handrail 44 provided between the columns 41.

A support member 47 is provided on each of the columns 41, and one end thereof is connected to an intermediate portion of the column 41, and the other end is connected to a pile 48 driven into the ground 42 around the column 41. When the lateral force is applied to 41, the support 4
Prevents 1 from tilting.

[0005]

However, in this conventional structure, a space is required because the support member 41 is supported by the support member 47 being obliquely stretched. For this reason, there is a problem that it is difficult to secure a space for supporting the column 41 in a narrow place, and it is difficult to fix the column 41.

The present invention has been made by paying attention to the problems existing in the prior art as described above. An object of the present invention is to provide a protection net extending structure capable of securely fixing a support to a ground even on a small land.

[0007]

According to a first aspect of the present invention, there is provided a protection net extending structure, wherein a supporting portion is provided with a connecting portion, and the connecting portion is provided with a guide pipe. Engage the connecting hooks to connect the guide pipe to the support, insert a pile into the guide pipe and drive into the ground to support multiple supports upright on the ground, and install handrails between the supports. Then, the protection net is locked and stretched by a locking portion provided on the handrail.

According to a second aspect of the present invention, there is provided a protective net extending structure according to the first aspect, wherein the handrail includes a horizontal member, and connecting claws are provided at both ends of the horizontal member. In addition to the provision, the column is provided with an engaging portion with which the connecting claw is engaged, and in the state where the connecting claw is engaged with the engaging portion and the handrail is connected to the column, the horizontal member is entirely around the connecting claw. It is configured to freely move in the direction.

A third aspect of the present invention provides a protection net extending structure, wherein the handrail is configured to be extendable and contractable in the first or second aspect of the invention.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to FIG.
4 will be described with reference to FIG. As shown in FIGS. 1 and 2,
A plurality of pillars 11 are provided around the building 12 at predetermined intervals, and are erected on the ground 14 by a base plate 13a of a jack base 13 attached to a lower end thereof. At this time, as shown in FIG.
When there are obstacles 15 such as trees and garden stones around 2,
The columns 11 are arranged in a non-linear manner so as to avoid the obstacles 15. The jack base 13 is provided with an arm 13b.
The height of the column 11 can be adjusted by rotating.

As shown in FIG. 2 and FIG. 4 (c), the connecting portion 16 as an engaging portion is projected in four directions at an upper portion, a middle portion and a lower portion of the column 11, and two sets facing each other are vertically arranged. They are staggered. Each connecting portion 16 is formed in a U-shape in a plane, and is joined to the outer peripheral surface of the column 11 at both side ends. The opposite side surfaces of the connecting portion 16 are formed narrower toward the lower end.

As shown in FIGS. 2 and 3, the guide pipe 17 has a cylindrical body 18, and a connecting hook 19 protrudes from one side of the upper end of the cylindrical body 18. The connecting hook 19 has a horizontal L-shape bent downward, and both side surfaces of the distal end portion are formed narrower toward the lower end. Further, an arc-shaped concave portion 19 a corresponding to the circular arc of the outer peripheral surface of the column 11 is formed on the outer surface of the distal end portion of the connecting hook 19. And the connecting hook 19
Is fitted to the connecting portion 16 of the support 11 with the outer surface of the tip facing the support 11, whereby the guide pipe 17 is connected to the support 11.

The steady rest 20 projects from the lower end of the cylindrical body 18 on the same side as the connecting hook 19, and its tip is formed in a flat V-shape. And the guide pipe 17
When the connecting hook 19 is fitted to the connecting portion 16 of the support 11,
The tip of the steady rest 20 grips the support 11 and prevents the guide pipe 17 from swaying left and right.
1 is held parallel to the first. Pile 21
In a state where the guide pipe 17 is connected to the support 11, the support 11 is inserted into the cylindrical body 18 and is vertically driven into the ground 14, whereby the support 11 is supported upright on the ground 14.

As shown in FIG. 4A, the handrail 22 is
Horizontal member 23 and connecting claws 2 provided at both ends of horizontal member 23
4 is provided. The horizontal member 23 includes a large-diameter cylinder 23a and a small-diameter cylinder 23b slidably fitted in the large-diameter cylinder 23a, and is configured to be expandable and contractible. A pair of inverted U
The character-shaped locking portion 25 is joined to the outer periphery of both ends of the horizontal member 23 at both ends. 4 (a) to 4 (c)
As shown in FIG. 7, the rod-shaped support shafts 26 are respectively protruded from both end surfaces of the horizontal member 23, and a large-diameter head 26 a is formed at the tip of each support shaft 26.

The connecting claw 24 is formed in the same shape as the tip of the connecting hook 19, and is configured to be able to be fitted to the connecting portion 16 of the column 11. That is, the connecting claw 24 has a U-shape in plan view, and the opposing side surfaces are formed narrower toward the lower end, and the surface other than the opposing side surfaces has an arc of the outer peripheral surface of the column 11. Arc-shaped recess 2 corresponding to
4a are formed. The mounting plate 27 is joined to the upper end of the connection claw 24, and a tapered hole 28 whose diameter increases toward the outer end is formed through the center of the mounting plate 27. The peripheral wall surface of the tapered hole 28 forms an angle of 45 ° with the surface of the mounting plate 27.

The support shaft 26 is inserted through a tapered hole 28,
The head 26a of the support shaft 26 engages with the inner peripheral edge of the tapered hole 28 to be retained and retained, whereby the connecting claws 24 are supported at both ends of the horizontal member 23, respectively. The horizontal member 23 is within a range of 45 ° in all directions, including a position perpendicular to the mounting plate 27 indicated by a solid line in FIG. It is possible to freely move with.

Then, as shown in FIG. 4C, the connecting claws 24 at both ends of the horizontal member 23 are connected to the connecting portions 1 of the adjacent columns 11.
As shown in FIG. 1, the handrails 22 are installed between the columns 11 by fitting the handrails 6 to each other.

As shown in FIG. 1B, the protection net 2
Reference numeral 9 denotes an upper portion and a lower portion which are stretched by, for example, connecting an upper portion and a lower portion to a locking portion 25 of a handrail 22 provided on the support column 11. The guide pipe 17 and the handrail 22 are all made of steel, and are subjected to hot-dip galvanizing as a surface treatment.

Next, the operation of the extending structure of the protection net 29 configured as described above will be described. When the protection net 29 is stretched around the building 12, first, FIG.
As shown in (1), a plurality of columns 11 are erected around a building 12 and temporarily fixed. At this time, as shown in FIG. 1A, the pillars 11 are arranged in a non-linear manner so as to avoid the obstacle 15 and, as shown in FIG.
It stands vertically regardless of the inclination of 4.

Then, as shown in FIG. 2, the guide pipe 1 connected at the connecting portion 16 at the intermediate portion of each of the columns 11 is provided.
7, the pile 21 is inserted into the cylinder 18 and the pile 21 is
And the support 11 is supported and fixed to the ground 14. At this time, as shown in FIG. 1A, the stake 21 is located on the building 12 side of the support 11.

Next, as shown in FIGS. 1 and 4, a handrail 22 is erected at the upper and lower connecting portions 16 of the adjacent column 11. At this time, the handrail 22 is installed by expanding and contracting the horizontal member 23 according to the distance between the adjacent columns 11. Further, the handrail 22 is erected so that the horizontal member 23 forms a predetermined angle with respect to the support 11 in accordance with the angle between the connecting portions 16 of the adjacent support 11, whereby the support 11 becomes non-linear. It is possible to cope with the case where they are arranged in a shape or stand on a slope.

Finally, as shown in FIG. 1 (b), the protection net 29 is connected to the locking portions 25 of the upper and lower handrails 22 and stretched. In this way, the protection net is stretched around the building 12, particularly on both sides and the back.

As described above, according to this embodiment, the following effects are exhibited. In the stretched structure of the protection net 29 of the embodiment,
The stake 21 is inserted into the cylinder 18 of the guide pipe 17 connected to the support 11 and is driven into the ground 14, and the support 11 is fixed to the ground 14 while being supported by the stake 21. For this reason, no space is required as compared with the conventional case in which the support member is stretched diagonally to support the column 11, and the column 11 can be used even in a small land.
Can be reliably fixed to the ground 14.

In the stretched structure of the protection net 29 according to the embodiment, the handrail 22 has a structure in which the horizontal member 23 is fixed to the support 11 by a predetermined angle in accordance with the angle between the connecting portions 16 of the adjacent support 11. It is erected at an angle. For this reason, the handrail 22 can be bent in the horizontal direction at the column 11 and can be erected, and even if there is an obstacle 15 such as a flowering plant or a garden stone around the building 12, the obstacle 15 is avoided. A protection net 29 can be provided. Further, when the handrail 22 is erected, it is not necessary to strictly adjust the height of the connecting portion 16 of the adjacent column 11, and the protection net 29 is attached to the sloped ground.
Can be easily accommodated.

In the stretching structure of the protection net 29 of the embodiment, the horizontal member 23 is composed of a large-diameter cylinder 23a and a small-diameter cylinder 23b slidably fitted in the large-diameter cylinder 23a, It is configured to be stretchable. Therefore, the length of the handrail 22 can be easily adjusted according to the distance between the adjacent columns 11.

In the stretched structure of the protective net 29 according to the embodiment, the peripheral wall surface of the tapered hole 28 forms an angle of 45 ° with the surface of the mounting plate 27. Therefore, the horizontal member 23 can freely move in all directions within a range of 45 ° around a position orthogonal to the mounting plate 27. Therefore, the angle between the two handrails 22 connected to the opposing connecting portions 16 of the support 11 is about 90 ° to about 270.
Can be adjusted in the range of °.

In the stretched structure of the protection net 29 according to the embodiment, the connecting portion 16 is provided so as to project from the outer peripheral surface of the support 11 in all directions. For this reason, when the handrails 22 are respectively connected to the connecting portions 16 adjacent to the pillar 11, the handrails 2
The angle between the two can be adjusted in a range from about 0 ° to about 90 °.

In the stretched structure of the protection net 29 of the embodiment, when the guide pipe 17 is connected to the column 11, the tip of the steady rest 20 grips the column 11, and the guide pipe 17 swings right and left. And the cylindrical body 18 is held parallel to the column 11. For this reason, the pile 21 can be reliably driven in parallel with the support 11 by inserting and driving the pile 21 through the cylindrical body 18.

In the stretched structure of the protection net 29 according to the embodiment, the opposing side surfaces of the connecting portion 16 having a flat U-shape are formed narrower toward the lower end. Further, the distal end of the connecting hook 19 of the guide pipe 17 and the connecting claw 24 of the handrail 22 that are fitted to the connecting portion 16 are both formed to be narrower as both side surfaces thereof approach the lower end. For this reason, the guide pipe 17 and the handrail 22 can be easily and reliably connected and fixed to the support column 11 by fitting the connection hook 19 and the connection claw 24 to the connection portion 16 of the support column 11 and driving in with a hammer or the like. .

In the stretched structure of the protection net 29 according to the embodiment, the guide pipe 17 and the handrail 22 are all made of steel, and are subjected to hot-dip galvanizing as a surface treatment. For this reason, it is excellent in corrosion prevention, rust prevention, etc.,
It can withstand long-term use.

The above embodiment can be modified as follows. As shown in FIG. 5, the connecting claws 24 are fixedly formed at both ends of the horizontal member 23. In the case of such a configuration, the same effect as that of the embodiment can be obtained when the protection net 29 is stretched by arranging the columns 11 in a straight line, an L shape, a U shape or a rectangular shape on a flat ground. Can be. Further, by adjusting the height of the support 11 using the jack base 13 and adjusting the height of the connecting portion 16 of the adjacent support 11, it is possible to cope with not only flat ground but also sloped ground.

As shown in FIG. 6, connecting claws 24 are provided at both ends of the horizontal member 23 so as to be rotatable about the rivets 30. In the case of such a configuration, the same effect as that of the embodiment can be obtained when the protection net 29 is stretched by arranging the columns 11 in a straight line, an L shape, a U shape or a rectangular shape on a flat ground. Can be. Also, as in the embodiment,
When the handrail 22 is erected, it is not necessary to strictly adjust the height of the connecting portion 16 of the adjacent column 11, and it is possible to easily cope with a slope.

The horizontal member 23 is formed by a single pipe or a round bar. In this case, the building 1
When arranging the struts 11 around the 2, by adjusting the distance between the struts 11 to the length of the handrail 22,
The same effect as the embodiment can be obtained.

Next, the technical ideas that can be grasped from the above embodiment will be described below. A mounting plate is provided on the connecting pawl, and the mounting plate has a tapered hole whose diameter increases toward the outer end, and bar-shaped support shafts inserted into the tapered holes are projected at both end surfaces of the horizontal member. The tensioning structure of a protection net according to claim 2 or 3, wherein a head is formed at a tip end of each support shaft so as to be engageable with a peripheral edge of an inner end of the tapered hole. With such a configuration, the horizontal member can be freely moved in all directions around the connecting claw, despite the simple structure.

The guide pipe according to any one of claims 1 to 3, wherein the guide pipe is provided with a steady rest which engages with a support and holds the guide pipe parallel to the support, separately from the connecting claw. Stretching structure of the protection net described in the paragraph. In such a configuration, the pile can be reliably driven in parallel with the pillar by inserting and driving the pile through the guide pipe.

The protection net extending structure according to claim 3, wherein the handrail includes a large-diameter cylinder and a small-diameter cylinder slidably fitted in the large-diameter cylinder. With this configuration, the handrail can be configured to be able to expand and contract with a simple structure.

[0037]

Since the present invention is configured as described above, it has the following effects. According to the structure for extending the protection net according to the first aspect of the present invention, it is possible to securely fix the support to the ground even on a small land.

According to the structure for extending the protection net according to the second aspect of the invention, in addition to the effect of the first aspect,
Even if there is an obstacle, the protection net can be stretched to avoid it, and it is also possible to easily cope with the case where the protection net is stretched on a slope.

According to the third aspect of the present invention, in addition to the effect of the first or second aspect of the present invention, in addition to the effect of the first or second aspect of the present invention, a handrail is provided in accordance with the distance between adjacent columns. The length can be easily adjusted.

[Brief description of the drawings]

FIG. 1A is a plan view showing one embodiment of a protection net stretching structure of the present invention, and FIG. 1B is a cross-sectional view thereof.

FIG. 2 is a cross-sectional view showing a state in which a pillar is supported by a stake.

FIG. 3A is a plan view showing a guide pipe, and FIG.
Is a rear view, (c) is a side view, (d) is a front view, and (e) is a bottom view.

FIG. 4A is a partially broken front view showing a handrail,
(B) is a partial front view showing a state where a handrail is connected to a support, and (c) is a partial plan view thereof.

FIG. 5 is a partially cutaway front view showing another example of a handrail.

6A is a partially cutaway front view showing another example of a handrail, and FIG. 6B is a partial plan view showing an enlarged view of a connecting claw thereof.

FIG. 7A is a cross-sectional view showing a conventional protection net stretching structure, and FIG. 7B is an enlarged partial plan view showing a state where a handrail and a support are connected.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Prop, 14 ... Ground, 16 ... Connection part as an engagement part, 17 ... Guide pipe, 19 ... Connection hook, 21 ... Pile, 2
2 ... handrail, 23 ... horizontal member, 24 ... connecting claw, 25 ... locking part, 29 ... protection net.

Claims (3)

[Claims] 1. A connecting portion is provided on a support, a connecting hook of a guide pipe is engaged with the connecting portion, the guide pipe is connected to the support, and a plurality of piles are inserted through the guide pipe and driven into the ground. While supporting and supporting the pillars on the ground,
A protection net extension structure in which a handrail is erected between the columns, and the protection net is locked and extended by a locking portion provided on the handrail. 2. The handrail includes a horizontal member, a connecting claw is provided at both ends of the horizontal member, an engaging portion is provided on the support column, and the connecting claw is engaged with the supporting member. 2. The protection net stretching structure according to claim 1, wherein the horizontal member can freely move in all directions around the connecting claws in a state where the handrail is connected to the support by engaging the rail. 3. The protective net stretching structure according to claim 1, wherein the handrail is configured to be extendable and contractible.