JPH1150454A - Anchor member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an anchor member from being easily pulled out from under the ground in the anchor member interlocking with vegetation mat, etc., spread on the surface of slope. SOLUTION: An anchor member is equipped with a core body 2 having a large diameter section 2a and a small diameter section 2b, an internal cylinder 3 fitted to the outside of the small diameter section 2b of the core body 2 and an external cylinder 4 fitted to the outside of the internal cylinder 3, a plurality of spiral slit grooves and swelling sections 3v and 4v consisting of through remainder sections x and y are provided to parts of the cylinders 3 and 4 and, at the same time, the internal cylinder 3 and the front end of the external cylinder 4 are connected to a stage section d by means of welding, etc. The anchor member 1 is driven by driving the core body 2, and then, the swelling sections 3v and 4v of the internal cylinder 3 and external cylinder 4 are swelled to the outsides by hitting the internal cylinder 3 and external cylinder 4 to prevent the anchor member from being easily pulled out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor member for fixing a vegetation mat or the like when the vegetation mat or the like is spread on a hillside, for example.

[0002]

2. Description of the Related Art Conventionally, in a slope protection method in which a vegetation mat or a greening net is spread on a slope of a hillside or an embankment, for example, an anchor member is used to fix the vegetation mat or the like in a fixed position. In this anchor member, for example, the tip of a bar-pile shape is tapered so that it can be easily driven into the soil, and a locking head for locking a mat or the like is provided on the base end side. A suitable anchor member is driven into the soil at predetermined intervals from a mat or the like to be fixed.

[0003]

However, such a simple bar-pile anchor member comes out of the soil when the soil is soft or when the slope is steep. There is a problem that the locking force for fixing the mat or the like in a fixed position tends to be insufficient.

Accordingly, an object of the present invention is to provide an anchor member which is firmly engaged with the surrounding soil when it is driven into the soil, and is hard to slip out of the soil.

[0005]

To achieve the above object, according to the present invention, there is provided an anchor member for retaining a covering material spread on an upper surface of soil in a fixed position in a tip side. A large diameter portion and a small diameter portion on the base end side are connected via a stepped portion, and the tip of the large diameter portion is tapered, and the core is fitted outside the small diameter portion of the core and the tip portion is Provide a cylinder to be joined to the step, so that when the core is driven into the soil, the cylinder is also driven together, and when the cylinder is driven separately from the core, a part of the cylinder is The bulging portion provided on the outer side protrudes outward.

[0006] After the core of the anchor member is driven into the soil, a further impact is applied only to the cylindrical body so that the bulging portion of the cylindrical body protrudes outward, and is easily inserted into the surrounding soil. So that you do not get out. Here, the tip of the cylinder is joined to the step of the core, so when the core is driven in, the cylinder is also driven into the soil together. Buckling load can be applied. In addition, the bulging portion of the cylindrical body is easily crushed when, for example, a buckling load is applied to the cylindrical body, and the crushed portion is easily protruded outward.

According to a second aspect of the present invention, the bulging portion of the cylindrical body is formed between the slit grooves by punching a plurality of spiral slit grooves having a predetermined width at predetermined intervals along the circumferential direction of the cylinder. Helical punching remaining portion to be formed.

If a plurality of spiral slit grooves are provided along the circumferential direction of the cylinder as described above, the same portion is easily crushed when the cylinder is hit, and the remaining portion of the punch buckles and spreads outward. It will be easier.

According to a third aspect of the present invention, the cylinder has a double cylinder structure of an inner cylinder and an outer cylinder having different spiral directions. The double cylinder structure of the inner cylinder and the outer cylinder having different spiral directions can increase the possibility of spreading the buckled part outward, and furthermore, the bulging part can be formed in the soil with the part bulging outward. The engagement force can be increased.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the anchor member of the present invention will be described with reference to the attached drawings. Here, FIG. 1 is an exploded perspective view of the anchor member according to the present invention, FIG. 2 is an operation view showing a part of the anchor member in cross section, and FIG. 3 is an explanatory view showing an example of a use state.

[0011] The anchor member according to the present invention ensures that a covering material such as a vegetation mat or a greening net spread on the top surface of the soil at a predetermined position when vegetation is applied to a slope such as a hillside or an embankment. It is designed to be able to be fixed on the ground, and it is difficult to get out after driving into the soil.

That is, as shown in FIG. 1, the anchor member 1 has a core 2 at the center, an inner cylinder 3 fitted on the outer side of the core 2, and an outer cylinder 3 fitted on the outer side of the inner cylinder 3. An outer cylinder 4 is provided, and these are integrally joined.

The core 2 is made of, for example, a metal material, and has a rod-like shape in which a large-diameter portion 2a on the distal end and a small-diameter portion 2b on the proximal end are connected via a step d. The distal end of the large diameter portion 2a is formed as a tapered portion t that is easily driven into the soil.

A through-hole h is provided near the base end of the small-diameter portion 2b of the core body 2 so as to penetrate the shaft in the diametric direction. The position of the through-hole h is determined in the manner described later. After the inner cylinder 3 and the outer cylinder 4 are struck and impacted, the inner cylinder 3 and the outer cylinder 4 are set to a position where the ends of the outer cylinder 4 are exposed to the outside. The hole h can be used, for example, as a fastening hole for passing a wire or a rope for fastening a net or the like made of a coating material.

The inner cylinder 3 is made of a material such as metal, for example. The inner diameter of the cylinder 3 is slightly larger than the small diameter portion 2b of the core 2, and the outer diameter of the cylinder 3 is 2 has a smaller diameter than the large diameter portion 2a, and the cylinder length is shorter than the length of the small diameter portion 2b.

A bulging portion 3v formed of a plurality of spiral slit grooves m,... Is formed on the distal end side of the inner cylinder 3. That is, the bulging portion 3v is formed by punching a plurality of spiral slit grooves m,... Along the circumferential direction of the cylinder, so that a plurality of spiral punch remaining portions x,. When the inner cylinder 3 is compressed in the axial direction, the remaining portions x,.

Next, the outer cylinder 4 is also made of, for example, a material such as metal, and the inner diameter of the outer cylinder 4 is made slightly larger than the outer diameter of the inner cylinder 3. The outer diameter is made smaller than the large diameter portion 2a of the core 2, and the length of the tube is approximately the same as the length of the inner tube 3.

A bulging portion 4v formed by a plurality of helical slit grooves n,... Is formed on the distal end side of the outer cylinder 4. The helical direction of the bulging portion 4v is as described above. The spiral direction of the bulging portion 3v of the inner cylinder 3 is set to be opposite to the spiral direction,
By punching a plurality of slit grooves n,... Along the circumferential direction of the cylinder, a plurality of spiral remaining punch portions y,.

In the anchor member 1 as described above, the inner cylinder 3 and the outer cylinder 4 are doubly covered on the small-diameter portion 2b of the core body 2, and the ends of the inner cylinder 3 and the outer cylinder 4 are placed on the step d. At the same time, the contact portions are welded or brazed to be integrated. Then, as shown in FIG. 2A, the end of the small diameter portion 2b of the core body 2 is integrated with the end of the inner tube 3 and the outer tube 4 and jumps out of the tube.

Next, the procedure for using the anchor member 1 will be described with reference to FIGS. Book anchor member 1
May be applied to all portions of the fixing portion of the greening net 11 as a covering material spread on the slope 10 such as a hillside, but in particular, a specific portion such as a lock net or a terminal rope of a slope net is fixed. It is more efficient if it is applied as a fixing device that performs fixing. In this case, it is used together with a conventional anchor member 21 that directly fixes the net.

That is, as shown in FIG. 3, a greening net 11 as a coating material is developed on a slope 10 such as a hillside, and for example, an intermediate portion is fixed with a conventional anchor 21 and a book is placed on a terminal rope or the like. The anchor member 1 is driven. Incidentally, the greening net 11 is, for example, such that fertilizer bags 13 are attached to the double-woven net 12 at predetermined intervals.

The anchor member 1 is driven by hitting the upper end of the small diameter portion 2b of the core 2 of the anchor member 1 as shown in FIG. 4 into the soil together. At this time, in the embodiment, since the outer diameter of the outer cylinder 4 is smaller than the diameter of the large-diameter portion 2a, the entire body can be driven smoothly.

When the core 2 is driven to a certain depth, the inner cylinder 3 and the outer cylinder 4 are hit next. When a blow is applied to the inner cylinder 3 and the outer cylinder 4, for example, a dedicated pipe or the like is put on the core body 2 and is brought into contact with the ends of the inner cylinder 3 and the outer cylinder 4. The inner cylinder 3 and the outer cylinder 4 are driven.

Then, the distal end of each of the cylinders 3 and 4 comes into contact with the step d of the core body 2 and receives a compressive load because it cannot advance, and the bulging portions 3v and 4v buckle so as to be crushed and punch each. The rest x,
The y spreads outward and enters the soil, forming a form as shown in FIG. Incidentally, FIG. 2 (B) shows a bulging portion 3v,
Although 4v shows a state in which it spreads finely and uniformly in the four circumferential directions, it is not always necessary to spread in such a fine manner, and it is effective even if it locally spreads only in a specific direction.

The driving amount of the inner cylinder 3 and the outer cylinder 4 is set so that at least the through hole h formed in the core 2 is exposed to the outside.

When the anchor member 1 is driven and fixed in such a state, the anchor member 1 is fastened and fixed to a terminal rope or the like of the greening net 11 through a wire, a rope or the like through the through hole h. And when the greening net 11 is fixed in this way,
As shown in FIG. 3, a vegetation base material 14 or the like is sprayed thereon to prepare a plant growth base.

The present invention is not limited to the above embodiment. Those having substantially the same configuration as those described in the claims of the present invention and exhibiting the same functions and effects belong to the technical scope of the present invention. For example, the application location of the present anchor member 1 is an example, and may be applied to other locations, and the material of the anchor member 1 is also arbitrary. Further, the number of the slit grooves m and n of the bulging portions 3v and 4v is also arbitrary. Further, it may be used for fixing the coating material spread on the soil other than the slope.

[0028]

As described above, the anchor member of the present invention is
As in claim 1, a cylindrical body is fitted to the outside of the small-diameter portion with respect to the core body in which the large-diameter portion on the distal side and the small-diameter portion on the base end are connected via the step portion, and the distal portion is formed into the step portion. After joining and driving the core, the bulging part of the cylinder is projected outward by driving the cylinder, so that the coating material can be firmly fixed without easily falling out of the soil. I can do it. Further, if the bulging portion of the cylindrical body is constituted by a plurality of helical punching remaining portions as in claim 2, when the cylindrical body is driven, the same portion is easily buckled and crushed. Can be easily spread outward. Further, when the cylindrical body has a double cylindrical structure of an inner cylinder and an outer cylinder having different helical directions, the possibility that the crushed portion spreads outward can be increased, and furthermore, the inner body and the outer cylinder can be connected to the soil. The engagement force can be increased.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an anchor member according to the present invention.

FIG. 2 is an operation view showing a cross section of a part of the anchor member.

FIG. 3 is an explanatory diagram showing an example of a use state;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Anchor member, 2 ... Core body, 2a ... Large diameter part, 2b ... Small diameter part, 3 ... Inner cylinder, 3v ... Swelling part, 4 ... Outer cylinder, 4v ... Swelling part, d ... Step part, t ... Tapered part, m, n ... slit groove,
x, y: remaining part of punching.

Claims (3)

[Claims] 1. An anchor member for retaining a covering material spread on an upper surface of soil in a fixed position, wherein a large-diameter portion on a distal side and a small-diameter portion on a proximal side are interposed through a step portion. A core body having a continuous and large-diameter portion with a tapered tip, and a cylindrical body fitted to the outside of the small-diameter portion of the core and having a tip joined to the step portion, and When the cylinder is driven, the cylinder is also driven together, and when the cylinder is driven separately from the core, the bulging portion provided in a part of the cylinder protrudes outward. An anchor member characterized in that: 2. The anchor member according to claim 1, wherein the bulging portion of the cylindrical body punches a plurality of spiral slit grooves having a predetermined width at predetermined intervals along a circumferential direction of the cylinder. An anchor member characterized by comprising a helical punching remaining portion formed between slit grooves. 3. The anchor member according to claim 2, wherein the cylindrical body has a double cylindrical structure of an inner cylinder and an outer cylinder having different helical directions.