JP2000073318A - Windbreak net supporting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily reerect a ground column without replacing a broken foundation pile in the ground. SOLUTION: A leg part 3a of a substitute pile 3 is fittingly inserted in a foundation pile 1 in the ground G, with a connected protruding part 1a broken and lost, and both are integrated. A connected head part 3b of the substitute pile 3 is therefore protruded onto the ground. The connected head part 3b of the substitute pile 3 is then fitted into an insert opening part 2a of a ground column 2 and connected by a fastening means. The broken foundation pile 1 in the ground G is therefore connected to the ground column 2 through the substitute pile 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a windbreak net used to prevent fruits such as apples, which have grown on fruit trees, from falling due to strong wind. In detail, the pillars consist of a tubular foundation pile embedded in the ground and a ground pillar connected to the foundation pile to support the windbreak net standing and held, and projecting from the upper end of the foundation pile. The present invention relates to a support for a support of a support device for a windbreak net, in which a connection protrusion provided is fitted into an insertion opening at a lower end of the above-mentioned ground pillar and connected.

[0002]

2. Description of the Related Art Heretofore, as a supporting device for a windbreak net of this type, for example, as disclosed in Japanese Patent Laid-Open No. Hei 10-88526, a plurality of supporting wires are vertically spaced at a certain distance between a plurality of columns. Each time, a plurality of cables are stretched, and a guide rod made of a pipe is laid across the upper end of the column, and a windproof net is movably hung on these support wires. Put it on one of the pillars side, and when it becomes necessary to windbreak, roll the pulley on the guide rod made of pipe,
There is a thing which moves the said windbreak net to the other support | pillar side, spreads and stretches between both support | pillars. The pillars are divided into two parts: a metal pipe foundation pile embedded in the ground and a metal pipe ground pillar that is connected to the foundation pile and held upright, in terms of transportation and the like. Then, a connecting projection projecting from the upper end of the foundation pile is fitted into the insertion opening at the lower end of the above-mentioned ground pillar, and both are connected by fastening means.

[0003]

However, in such a conventional support device for windbreak nets, since the foundation pile of the pillar is embedded in the ground, the moisture from the ground causes the ground from the ground part of the foundation pile to the ground. It is easy to corrode as it goes to the part, especially the connection protrusion of the foundation pile is most susceptible to corrosion.For example, when a strong wind is blown against the windbreak net by a typhoon etc., the load acting on the ground pillars Most concentrated on the proximal end,
As a result, there is a possibility that the ground column may be broken from the base end portion of the connecting protrusion while the insertion port of the ground column is connected, thereby causing the ground column to fall. Once the connection protrusion of the foundation pile breaks,
In order to rebuild the ground pillars, it was necessary to replace the broken foundation pile with a new one. However, the work to replace the underground foundation pile first dismantles and removes all ground support wires, guide rods, and windbreak nets attached to the ground pillars, and then uses heavy equipment for civil engineering, such as a power shovel By doing so, the ground is dug up to pull out the foundation pile whose connection projection is broken, then backfilled, embed a new foundation pile and connect the ground pillars, and finally the ground support wires, guide rods and windbreak nets Must be reassembled. Therefore, such a replacement work of the foundation pile has a problem that not only the work is troublesome and the construction period is time-consuming, but also heavy equipment for civil engineering work is required and the construction cost is high.

An object of the present invention is to easily rebuild a ground pillar without excavating a broken foundation pile. The invention according to claim 2 is
In addition to the object of the first aspect of the present invention, even if the inner peripheral surface of the foundation pile expands and deforms inward due to corrosion, it is another object of the present invention to easily insert the legs with a small force.

[0005]

In order to achieve the above-mentioned object, according to the first aspect of the present invention, a leg having an outer diameter substantially equal to the inner diameter of a foundation pile, and an insertion opening of a ground pillar are provided. A substitute pile consisting of a connection head having an outer diameter substantially the same as the inner diameter of the substitute pile is prepared, and the legs of the substitute pile are inserted and integrated into the foundation pile in which the connection protrusions have been broken and are integrated. A windbreak net support device, wherein a connecting head projecting to the ground is fitted into an insertion opening of a ground pillar and connected by fastening means. It is characterized by the following. According to a second aspect of the present invention, in the configuration of the first aspect of the present invention, the outer diameter of the leg is formed to be slightly smaller than the inner diameter of the foundation pile, and the outer peripheral surface of the leg is provided at appropriate intervals in the circumferential direction. And a configuration in which a plurality of protrusions are provided in the axial direction.

[0006]

According to the first aspect of the present invention, the connecting head of the substitute pile is inserted by inserting the legs of the substitute pile into the underground foundation pile where the connecting protrusion is broken and lost. The part protrudes to the ground, and thereafter, the connection head of the substitute pile is fitted into the insertion opening of the ground pillar, and connected by the fastening means 4, so that the broken underground foundation pile is connected to the ground pillar via the substitute pile. Are linked. According to a second aspect of the present invention, the outer diameter of the leg portion is formed to be slightly smaller than the inner diameter of the foundation pile, and the outer peripheral surface of the leg portion is formed at appropriate intervals in the circumferential direction with respect to the configuration of the first aspect. A configuration in which a plurality of ridges are protruded in the axial direction has been added, so that only the ridges are partially located near the inner diameter of the foundation pile. There is no partial contact with the inner peripheral surface of the pile, and the insertion resistance of these ridges is extremely low.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, as shown in FIG. 1 to FIG. 3, a column A is used to support a foundation pile 1 embedded in the underground G and a windproof net N which is connected to the foundation pile 1 and held upright. Connecting pillars 1a projecting from the upper end of the foundation pile 1 into the insertion openings 2a at the lower ends of the ground pillars 2; Alternatively, a case is shown in which the connecting head 3b of the substitute pile 3 is fitted, and a through bolt 4a is inserted as a fastening means 4 between the two, and the two are connected by tightening with a nut 4b.

As shown in FIG. 2, the foundation pile 1 is formed of a metal such as carbon steel into a cylindrical shape having a diameter of about 14 cm and a length of about 175 cm. And rust preventive treatment. The upper end of the foundation pile 1 has the same diameter and a length of about 40
cm of the connecting protrusion 1a.
A plurality of through-holes 1b are formed at an intermediate position in the axial direction of FIG. Most of the foundation pile 1 excluding the connecting protrusion 1a is embedded in the ground A in use, and a plurality of fixed blades 1d and 1e for preventing falling are provided on the outer peripheral surface of the embedded portion 1c. In the illustrated example, four fixed blades 1d, 1d, 1e, 1e are protruded in a plane cross shape, and fixed blades 1d, 1d parallel to the windbreak net N having a large resistance to wind.
Is larger than the area of the fixed blades 1e, 1e orthogonal to the windbreak net N.

As shown in FIGS. 1 and 2, the above-mentioned ground pillar 2 is formed of a metal such as carbon steel into a cylindrical shape having a length of about 510 cm, as in the case of the foundation pile 1. Zinc plating and rust prevention treatment. At the lower end of the ground pillar 2, an insertion opening 2 having an inner diameter larger than the outer diameter of the connecting protrusion 1a and substantially the same as the outer diameter of the connecting protrusion 1a is provided.
The insertion opening 2a is formed to have a length substantially equal to or longer than the length of the connecting projection 1a. At an intermediate position in the axial direction of the insertion opening 2a, a plurality of through holes 2b are provided at positions corresponding to the through holes 1b... Of the connection projecting portion 1a, three in the illustrated example at equal intervals in the axial direction.
Drill through each of them perpendicular to the axial direction.

Further, the above-mentioned ground pillar 2 is formed so that its diameter gradually decreases in a stepwise manner toward the upper end as shown in FIG. 1, or the insertion hole 2a extends over the entire length in the axial direction. It is formed to have substantially the same diameter, closes its upper end opening, and has a support wire W
Are supported at appropriate intervals, and a guide rod P made of a pipe is laid horizontally near the upper end.

Then, substitute piles 3 are prepared as substitutes when the connecting projections 1a of the foundation pile 1 are broken, at least by the number of the foundation piles 1 whose connection projections 1a are broken. As shown in FIG. 2, the substitute pile 3 has a length of about 100 made of a metal such as carbon steel, similarly to the foundation pile 1 and the ground pillar 2.
cm or more, the surface of which is, for example, hot-dip galvanized to prevent rust, and at one axial end thereof, a leg 3a having an outer diameter substantially equal to the inner diameter of the foundation pile 1 is provided. A connecting head 3 having an outer diameter substantially the same as the inner diameter of the insertion opening 2a at the lower end of the ground pillar 2 is formed on the other end side opposite to this.
b is formed.

The leg 3a has a length of about 65c.
m or more, and in the case of this embodiment,
The outer diameter is formed slightly smaller than the inner diameter of the foundation pile 1,
On its outer peripheral surface, ridges 3c parallel in the circumferential direction at appropriate intervals are provided.
Are projected in the axial direction at regular intervals in the illustrated example, so that only the projecting position of the ridges 3c is partially close to the inner diameter of the foundation pile 1. One end of the ridges 3c, that is, the lower end opposite to the connecting head 3b is inclined so that the amount of protrusion gradually decreases as it goes downward.

The connecting head 3b has a length of about 3
5 cm or a maximum of about 40 cm is formed, and a through hole 3 d is provided at a position corresponding to the through hole 2 b of the above-mentioned ground pillar 2.
In the illustrated example, three through holes are formed at regular intervals in the axial direction, and each is perpendicular to the axial direction. Further, in the case of the illustrated example, the outer diameter of the connecting head 3b is set to the insertion opening 2a of the ground post 2.
Since there is no commercially available product having an outer diameter substantially the same as the inner diameter of the insertion hole, a pair of adjustment pieces 3e, 3e are used at positions opposing each other where the through holes 3d are opened.
Is welded so that only the projecting positions of the adjusting pieces 3e, 3e are partially near the inner diameter of the insertion opening 2a.

Next, a method for repairing the column A of the windbreak net support device will be described. By strong wind such as typhoon,
When the connection protrusion 1a of the corroded foundation pile 1 is broken from the base end portion of the connection protrusion 1a while the insertion opening 2a of the ground pillar 2 is connected as shown in FIG. Support A
While the guide rod P made of a pipe laid over the upper end of the windshield is still laid horizontally, the support wires W of the windbreak net N are loosened. At substantially the same time, the through bolt 4a of the fastening means 4 inserted through the through-hole 2b of the insertion opening 2a of the above-mentioned ground pillar 2 and the through-hole 1b of the broken connecting protrusion 1a is pulled out.

Thereafter, as shown by the solid line in FIG. 3 (a), the above-mentioned ground column 2 is caught using a hoisting device C such as a chain block.
Then, the connection projecting portion 1a is removed, and the insertion port 2a side of the above-mentioned ground pillar 2 is swung away from directly above the foundation pile 1 in the lateral direction. Lower.

Then, as shown by the solid line in FIG. 3B, the leg 3a of the substitute pile 3 is inserted into the broken foundation pile 1, and
These are integrated, whereby the connecting head 3b protrudes to the ground. At this time, the inner peripheral surface 1f of the foundation pile 1 is
It is not an accurate circle because it expands and deforms inward due to corrosion.

However, in the case of this embodiment, the outer diameter of the leg 3a is formed slightly smaller than the inner diameter of the foundation pile 1, and the outer peripheral surface thereof is formed with parallel ridges parallel to the circumferential direction at appropriate intervals. By protruding a plurality of each in the axial direction, a plurality of ridges 3c are formed.
Is only partially near the inner diameter of the foundation pile 1.
As a result, when the two-dot chain line in FIG. 3 (b) and the leg 3a shown in FIG. 1 (b) are inserted, only the ridges 3c contact the inner peripheral surface 1f of the foundation pile 1 partially. , These ridges 3
The insertion resistance of c ... is extremely low. Therefore, even if the inner peripheral surface 1f of the foundation pile 1 expands and deforms inward due to corrosion, the leg 3a can be easily inserted with a small force, and the operation of inserting the leg 3a is very easy.

After that, using the hoisting device such as a chain block again, the above-mentioned ground column 2 is picked up and the insertion opening 2a side of the ground column 2 is connected to the foundation pile 1 as shown by the solid line in FIG. 3 (c). Swinging to just above, and then FIG. 3 (c)
As shown by the two-dot chain line, the connecting head 3b of the substitute pile 3 protruding above the ground is fitted into the insertion opening 2a of the ground pillar 2.

In this state, the through holes 2 of these insertion openings 2a are formed.
.. and through the through holes 3d of the connecting head 3b, the through bolts 4a of the fastening means 4 are inserted, and the nuts 4 are inserted.
b, so that the two are connected. As a result, the ground column 2 can be easily re-established without replacing the broken underground G foundation pile 1 with a new foundation pile. Accordingly, there is no need to dismantle and remove and reassemble the ground support wire W, the guide rods P, and the windbreak nets N attached to the ground pillars 2, and there is no need for heavy equipment for civil engineering work, making the operation safe and easy. it can.

Finally, the supporting wires W of the windbreak net N are provided.
Is tensioned, the repair work of the column A is completed.

In the embodiment described above, the foundation pile 1 and the
Has been described as being constituted by metal round pipes having a circular cross section, but the present invention is not limited to this, and the same applies to the case where each is constituted by a metal square pipe having a rectangular cross section. Further, the connection protrusion 1a of the foundation pile 1 is inserted into the insertion opening 2a at the lower end of the ground pillar 2.
Or, in a state where the connecting head 3b of the substitute pile 3 is fitted, a case where the through bolt 4a is inserted as the fastening means 4 and the nut 4b is tightened between them is shown.
The present invention is not limited to this, and other than the through bolt 4a and the nut 4b may be used as the fastening means 4.

[0022]

As described above, according to the first aspect of the present invention, the leg portion of the substitute pile is inserted into the underground foundation pile in which the connecting projection is broken and lost. The connecting head of the substitute pile protrudes to the ground, and then the connecting head of the substitute pile is fitted into the insertion opening of the ground pillar and connected by the fastening means 4, so that the broken ground is Since the inside foundation pile is connected to the above-ground pillar via the substitute pile, the above-ground pillar can be easily erected without replacing the broken underground foundation pile. Therefore, compared to the conventional method that requires excavating a broken underground foundation pile and replacing it with a new foundation pile, the ground support wires, guide rods, and windbreak nets attached to the ground pillars are dismantled and removed and reassembled. There is no necessity, and no heavy equipment for civil works is required, the work can be done safely and easily, and the construction period can be remarkably shortened and the construction cost can be greatly reduced.

According to a second aspect of the present invention, in addition to the effect of the first aspect of the present invention, only the projecting position of the ridge is made to be partially near the inner diameter of the foundation pile, so that when the leg is fitted and inserted, Only the struts make partial contact with the inner peripheral surface of the foundation pile, and the insertion resistance of these ridges is extremely low. Therefore, even if the inner peripheral surface of the foundation pile expands and deforms inward due to corrosion, the legs can be easily reduced with a small force. Can be inserted. Therefore, the work of inserting and inserting the legs is very easy.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a support device for a windproof net showing an embodiment of the present invention, wherein (a) shows the entire device after repair of a support, and (b) shows a portion before and after repair of a support. It is partially cut away while expanding.

FIG. 2 is an exploded perspective view of a foundation pile, a substitute pile, and a ground pillar.

FIG. 3 is a partially cutaway front view showing a support column repairing procedure, wherein (a) shows a horizontal movement of a ground pillar, (b) shows a state of mounting a substitute pile, and (c) shows a ground pile on a substitute pile. This shows a state where a column is fitted.

[Explanation of symbols]

 A pillar N windbreak net G underground 1 foundation pile 1a connection protrusion 2 ground pillar 2a insertion opening 3 substitute pile 3a leg 3b connection head 3c ridge 4 fastening means

Claims (2)

[Claims] 1. A pillar (A) includes a tubular foundation pile (1) embedded in the ground (G), and a windbreak net (N) connected to and held on the foundation pile (1). A connecting projection (1a), which comprises a ground pillar (2) for supporting and protrudes from an upper end of the foundation pile (1), is fitted into an insertion opening (2a) at a lower end of the ground pillar (2). A supporting device for a windbreak net, the leg portion having an outer diameter substantially the same as the inner diameter of the foundation pile.
And a connecting pile (3) composed of a connecting head (3b) having an outer diameter substantially the same as the inner diameter of the insertion opening (2a) of the ground pillar (2), and a leg ( 3a) is inserted and integrated into the foundation pile (1) in which the connecting projection (1a) has been broken, and the connecting head (3b) projecting to the ground of the substitute pile (3) is connected to the ground pillar (3). A support device for a windproof net, wherein the support device is fitted into the insertion opening (2a) of (2) and connected by fastening means (4). 2. An outer diameter of the leg (3a) is set to a foundation pile (1).
2. A windscreen net according to claim 1, wherein a plurality of ridges (3c) are formed on the outer peripheral surface of the leg portion (3a) in the circumferential direction at appropriate intervals in the circumferential direction. Support device.