JPH10176310A - Windbreak fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve performance and workability by forming a fence for storm protection, snow protection and dustproofing by providing fiber-reinforced plastic belts in the lengthy direction in parallel and in parallel in the vertical direction with intervals. SOLUTION: A belt 12 in which high strength fiber with a higher melting point than thermoplastic resin is inserted in the lengthy direction is provided in the thermoplastic resin. Thereafter, the belts 12 are arranged in parallel with specified intervals, and the same belts are welded 13 on the belts 12 orthogonally and with constant intervals and made in a sheet form. Additionally, in the case of providing a fence, beams 16 are installed on upper and lower parts of supports 15 erected with specified intervals, the sheet type belts 12 are installed between the beams 16, and in this case, a direction of the belts 12 is made the vertical direction. Consequently, it is possible to display a function of the fence for a long period of time as lowering of tensile strength by an ultraviolet ray is prevented, to improve workability as they are light in weight, to support settling force of snow by reinforcing fiber as the belts are arranged in the vertical direction and to prevent breakage of the fence.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fence for wind protection, snow protection and dust protection.

[0002]

2. Description of the Related Art Conventionally, as a fence for the purpose of windproof, snowproof, and dustproof, a rectangular iron plate having many holes is bent in a U-shaped cross section, and a resin net,
Or a Russell net made of monofilament,
Useful sheets such as mesh fabrics are used.

[0003] However, the iron plate fence with holes is heavy and takes a lot of time to install, and when installed near the coast, there is a problem in durability because salt rust is generated due to salt. Russell nets and mesh fabrics are deteriorated by ultraviolet rays, and have a problem that the strength is considerably reduced in several years, and the fabric is easily damaged. Further, if the fence is installed in a snow-covered area, the fence of snow acts on the fence when the snow melts, and the fence with insufficient strength is disadvantageously deformed or damaged.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a fence for the purpose of windproof, snowproof, and dustproof, which is lightweight, has good workability, is durable, and is not deformed or damaged by the sedimentation force of snow. With the goal.

[0005]

SUMMARY OF THE INVENTION According to the present invention, when extruding a thermoplastic resin belt, belts in which fibers having tensile strength are inserted in parallel in the longitudinal direction are arranged in parallel at intervals. A sheet made by welding a belt of the same material at right angles to the belt at an interval in the vertical direction was attached to a column so that the belts arranged in parallel were in the height direction.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS When a thermoplastic resin is extruded into a thin belt, a high strength fiber having a melting point higher than that of the thermoplastic resin is inserted in parallel into the thermoplastic resin using a crosshead.

[0007] The belts are arranged in parallel at regular intervals, and the same belt is welded at regular intervals to the belt to form a sheet. At this time, the porosity of the fence is preferably set to about 50% by making the belt width and the belt interval the same, and in order to obtain a high windproof effect over a wide range, the porosity of the sheet is set to about 20 to 60%. It is advisable to determine the width and spacing of the belt so that

In order to mount the fence, columns are erected at regular intervals, and beams are mounted horizontally on the columns and at the top and bottom of the columns. Attach the fence belt to the beam attached to the column, and install the fence so that the parallel belts are in the height direction.

The size of the fence and the number of reinforcing fibers
It is determined by the required characteristics of the fence, the design wind speed, and the snow sinking power, so if you want a windbreak effect over a wider range, you need to make the fence height higher.
At that time, it is necessary to increase the tensile strength of the fence, and the number of reinforcing fibers also increases.

As the material of the belt used for the fence, any thermoplastic resin that can be extruded may be used, and general-purpose resins such as polyethylene, polypropylene, polyvinyl chloride and ethylene vinyl copolymer are sufficient. Further, the reinforcing fiber must have a higher melting point than the material of the belt and must have a sufficient tensile strength. Therefore, polyester fiber, polyamide fiber, aramid fiber, carbon fiber, glass fiber, steel fiber, and the like are preferable. The width of the belt is preferably about 20 mm to 200 mm, and the thickness is preferably as thin as possible to improve economy and workability, and is preferably about 0.4 mm to 3 mm.

[0011] As for the material of the column, steel pipe, reinforced concrete, H-shaped steel, and the like can be considered, and this also needs to be determined by the size of the fence, the design wind speed, and the sedimentation force of snow. In addition, the method of attaching the fence to the column is to loop both sides of the parallel belt, loop it, pass a pipe, attach the pipe to the column,
There is also a method in which a fence belt is sandwiched between two square pipes, and the fence is wrapped around the fence belt so that the fence does not come out from between the square pipes, and the square pipe is fixed to a column.

Since the fence of the present invention has a structure in which a plastic belt is fiber-reinforced, it is difficult for ultraviolet rays to reach the reinforced fibers. Therefore, even if deterioration of the outer plastic due to ultraviolet rays starts, the tensile strength hardly decreases. No, it can keep the function of the fence for a long time. Further, if a plastic containing carbon black is used as the material of the belt, the progress of ultraviolet deterioration of the belt itself is slowed, and the durability can be further improved.

Furthermore, since the material is plastic, it is lighter in weight than an iron plate with holes, so that the workability is good, and since the surface is not hard, there is no risk of injury at the time of installation. In a snowy area, the sedimentation force of snow acts on the fence, but the downward load on the fence is affected by the reinforcing fiber because the belts are lined up in the height direction. If there are enough, there is no fear that the fence will be damaged.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of the fence of the present embodiment. First,
Polyethylene 11 containing carbon black has a width of 50
At the time of extrusion molding into a belt having a diameter of about 1 mm and a thickness of about 1 mm, 21 1500 denier polyester fibers 10 were arranged and inserted into polyethylene 11 using a crosshead. FIG. 2 is a sectional view of the belt.

The belts 12 were arranged in parallel at an interval of 50 mm, and the same belt was welded 13 at an interval of 1 m at right angles to form a sheet. Further, both sides of the belts 12 arranged in parallel were turned back, and the ends were welded to form a loop 14 to produce a fence. The width of the fence was 1.
The size was 5 m and the height was 3 m.

In order to attach this fence,
As 5, steel pipes were erected at 1.5 m intervals, and the steel pipes as beams 16 were attached to the uppermost and lowermost parts of the columns by orthogonal clamps 17. Beam 1 attached to pillar
6 was passed through loops 14 on both sides of the fence to integrate the fence, beam and support.

[0017]

According to the fence of this embodiment, since the plastic belt containing carbon black is fiber-reinforced, it is difficult for the ultraviolet rays to reach the reinforced fiber. The strength hardly decreases, and the function of the fence can be continued for a long time.

Further, since the weight is about 2 kg per sheet, it is lighter than a perforated iron plate, so that the workability is good and the surface is smooth, so that there is no risk of injury at the time of installation. Also, in snowy areas, the sedimentation force of snow acts on the fence, but the downward load on the fence causes the reinforcing fibers to receive the load because the belts are aligned in the height direction, and the fence is damaged Never.

[Brief description of the drawings]

FIG. 1 is a front view of a fence of the present invention.

FIG. 2 is a side view of the fence of the present invention.

FIG. 3 is a sectional view of a belt used for the fence of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Polyester fiber 11 Polyethylene resin 12 Fiber reinforced belt 13 Welding part 14 Loop 15 Prop 16 Beam 17 Orthogonal clamp

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI B29L 31:00

Claims (1)

[Claims] 1. A fence for the purpose of wind protection, snow protection and dust protection, which has a structure in which plastic belts reinforced with fibers in the length direction are arranged at appropriate intervals in parallel in the height direction.