JP4431835B2 - Curved snow fence with snow deflector - Google Patents

Description

The present invention relates to a curved snow fence with a snow blowing deflecting plate that is effective not only for preventing a puddle from being formed on a road due to snow blowing but also for ensuring visibility of a driver from the snow blowing.

In snowy and cold regions, the snowstorm blowing on the road hinders the driver's field of view, impedes traffic and causes traffic accidents. In view of this, a blown snow fence, a blown snow fence, or the like is erected along the shoulder of the road to suppress the occurrence of snowstorm on the road. In particular, it has been attempted to reduce the visibility hindrance of the driver of an automobile by standing a snow-stop type snow fence on the shoulder and guiding the snowstorm along the fence.

The blow-off type snow fences are designed to blow snow on the road surface by blowing wind on the road surface by installing a plurality of snow protection plates that are angled downward toward the leeward side. Blow-type snow fences capture snowstorms throughout the snow fence to prevent snowstorms from entering the road, such as flip-up type with the upper end facing the windward side, curved upper end toward the leeward side, etc. There is.

The above-mentioned blow-off type snow fences and blow-off type snow fences are erected along the road, and are effective in suppressing snow blown at right angles to the road. In addition, it is effective to a certain extent against snowstorms blown obliquely (approximately ± 30 degrees). However, in the case of a snowstorm that blows at a large angle of 30 degrees or more with respect to the snow fence, the snow blown-up phenomenon occurs on the road in the blown snow fence, and the road from the top of the snow fence in the blow snow fence Since a snowstorm entanglement phenomenon occurs on the side, problems such as a deterioration in visibility and a possibility of being trapped arise. Therefore, the snow fences are installed so that the effects of the topography, weather conditions, etc. of the place where they are installed can be best demonstrated. However, there are cases where the snow fence is blown from a direction significantly different from the direction in which the snowstorm is scheduled due to a sudden change in weather conditions. In this case, the above-described blowing-type snow fence and the blow-off type snow fence cannot sufficiently exhibit the snow-proof effect.

Therefore, there is a windbreaking snow fence with creeping windshield that is installed on the windward side of the windbreak plate perpendicular to the direction in which the snow fences are lined. Reference 1).
Utility model registration No. 3097796

However, since the above-described windproof snow fence with a windbreak plate is a windbreak type, if the snowstorm collides with the snowboard, a snow pool is generated and snow is accumulated before the snow fence. When snow is accumulated before the snow protection plate, the wind control plate is buried in the snow and cannot function at all.

The present invention has been made in view of the above-mentioned problems of the prior art, and by effectively deflecting the snowstorm blown obliquely against the snow fence and guiding it to the leeward distance, the visibility of the driver of the automobile is ensured. It is an object of the present invention to provide a curved snow fence with a snowstorm deflector that allows safe traveling.

The means of the present invention configured to solve the above-described problems is an upper curved plate portion having a guide surface composed of a convex curved surface that curves obliquely upward facing the leeward direction of the snowstorm, and the leeward direction of the snowstorm. In a curved snow fence including a lower vertical plate portion having a substantially right-angled non-stop surface, a plurality of snow deflector plates are arranged laterally on the upper curved plate portion with a predetermined interval in the downwind direction of the snowstorm. It is provided so as to protrude in the reverse direction.

And it is good for the said snowstorm deflecting board to be detachable.

In addition, the blowing snow deflecting plate may have a lateral installation interval of about 2.5 times the protrusion width.

Further, the snowstorm deflecting plate may have a protrusion width of about 0.4 m to 0.8 m and a lateral installation interval of about 1 m to 2 m.

The present invention has the following effects by adopting the above-described configuration.
(1) Since a snowstorm deflector is installed on the snow fence, even if it is blowing from an oblique direction to the snow fence, its direction is deflected and blown to the lee as if it is blown at right angles. The driver's visibility can be secured and safe driving can be realized.
(2) Since the snowstorm deflecting plate is provided on the upper curved plate portion, even if the snowstorm accumulates in front of the lower vertical plate portion, the snowstorm deflecting plate is not buried in the snow and the deflection effect is not lowered.
(3) Since the snowstorm deflector is detachable, it can be prevented from being damaged by removing it when it is not in use, such as in summer, and wind noise generated when the wind collides with the snowstorm deflector. Can be prevented.
(4) Since the snowstorm deflector is detachable, it can be used for the purpose of the folding snow fence considering the landscape.
(5) A snowstorm that may blow through without being deflected between a pair of spaced snowstorm deflector plates by setting the lateral installation interval of the snowstorm deflector plate to about 2.5 times the protruding width is also possible. Since it can be deflected by the induction effect of the flow of another snowstorm deflected by the plate, it is not necessary to widen the width of the snowstorm deflector plate, and the strength of the snowstorm deflector plate can be maintained and its damage can be prevented.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a curved snow fence with a snow blowing deflector plate (hereinafter referred to as a snow fence 1), and 2 and 2 denote a pair of vertical columns constituting the snow fence 1. The vertical strut 2 is composed of a lower vertical portion 2A that stands vertically with respect to the ground, and an upper curved portion 2B that curves from the windward side toward the leeward road side. It is. The vertical struts 2 are supported by support bodies 3 and 3 provided at the lower end, and are located on both sides of the road and are erected at a predetermined interval substantially in parallel with the road.

Reference numeral 4 denotes a lower vertical plate portion formed by laying a plurality of snow plates between the vertical portions 2A and 2A of the vertical struts 2 and 2 in order to block snowstorm. Reference numeral 5 denotes an upper curved plate portion for guiding the snowstorm to be blown to the leeward upper side and causing it to jump. The upper curved plate portion 5 is formed on a surface that is curved obliquely upward by laying a plurality of snowproof plates between the curved portions 2B, 2B of the vertical struts 2, 2, and is a convex curve serving as a guide surface. are the surface 5A is opposed to blowing with only the direction of the snowstorm is windward side.

Reference numerals 6 and 6 denote snow blowing deflecting plates provided vertically on the curved portion 2B of the vertical column 2 in a state of protruding in the direction opposite to the leeward direction of the snowstorm. Also, a snowstorm deflecting plate 6 is provided in the middle of the upper curved plate portion 5 which is the middle of the pair of curved portions 2B. The snow blowing deflection plate 6 has a tip edge 6A formed in a curved shape so as to follow the curved surface of the upper curved plate portion 5, and is fixed using an L-shaped bracket and a bolt nut (not shown). .

The present embodiment has the above-described configuration, and the operation thereof will be described next.
FIG. 2 is a side view of the flow of snowstorm. As shown in the drawing, among the snowstorms flowing from the blowing direction A, which is the leeward direction of the snowstorm, to the road B, the snowstorm A1 flowing below is blocked by the vertical plate portion 4 and does not enter the road B side. Further, the snowstorm A2 flowing upward is largely changed by the upper curved plate portion 5, is guided to the upper curved plate portion 5, blows up, and flows as it is to the leeward distance C.

FIG. 3 is a view of the flow of a snowstorm as seen from above. As shown in the figure, the snowstorm A3 that blows obliquely at a large angle of 30 degrees or more with respect to the road B from the blowing direction A of the snowstorm is forced to be greatly deflected by the snowstorm deflector 6 and blown at a right angle. In the same manner as above.

4 and 5 are diagrams showing the installation interval of the snowstorm deflector plate 6 and the flow of the snowstorm. As shown in FIG. 4, when the protruding width L1 of the snowstorm deflector 6 is about 0.8 m and the installation interval L2 is about 4 m, that is, the installation interval of the vertical struts 2 and 2 is 4 m. Are provided at the positions of the vertical struts 2 and 2, respectively, the snow blowing effect is exerted to some extent on the snowstorm A4 blown from a direction within about 30 degrees, but the snowstorm deflector 6 is applied to the snowstorm A5 blown from an angle of 30 degrees or more. Due to this, a component that passes between the snowstorm deflecting plates 6 and 6 without being deflected is produced, and the deflection efficiency of the snowstorm is greatly reduced.

On the other hand, as shown in FIG. 5, when the installation interval L3 of the snowstorm deflector 6 is about 2 m, that is, the installation interval of the vertical struts 2 and 2 is about 4 m, and the snowstorm deflectors 6 and 6 are connected to the vertical strut 2. 2 and the upper curved plate part 5 are provided at the centers of the upper and lower curved plate parts 5, respectively, and the blowing area between the blowing snow deflecting plates 6 and 6 is narrowed. Therefore, the blowing snow A6 blown from a large angle exceeding 30 degrees is also deflected by the blowing snow deflecting plate 6. Can jump upwindward. Since the snowstorm A7 having a slight remaining blow-through component is also guided and deflected by the deflected snowstorm flow A8, it can be made to jump upwindward by the upper curved plate portion 5 like the snowstorm blowing at a right angle. Thus, when the protrusion width L1 of the snowstorm deflecting plate 6 is about 0.8 m, the guiding effect of the deflected snowstorm is obtained by setting the installation interval L3 to about 2 m (about 2.5 times the protrusion width L1). Can be used to capture and deflect all of the snowstorm. Therefore, it is not necessary to widen the protrusion width L1 of the snow deflecting plate so that snow from all directions can be deflected, and the strength of the snow deflecting plate can be maintained and damage to the snow deflecting plate can be prevented.

FIG. 6 shows a snowstorm on a road that is leeward of the snow fence, with respect to each of the curved snow fence with a snow blowing deflector according to the present embodiment, a conventional curved snow fence without a snow deflector, and a conventional snow guard with a snow blow deflector. It is the figure which showed the experimental result which compared the density | concentration of. The left shows the results of a curved snow fence with a snowstorm deflector, the middle shows the results of a conventional snow fence without a snowstorm deflector, and the right shows the results of a conventional snowbreak fence. In the experiment, real snow particles are used, and the direction of the snowstorm is 0 degrees (perpendicular to the snow fence), 30 degrees, and 60 degrees, and the snowstorm concentration is shown in six stages.

It can be seen that in the conventional blown snow fence, the high snowstorm covers the entire road since the direction of the snow blow is 30 degrees, and the function as the snow fence is not performed at all. Further, in a curved snow fence without a snowstorm deflector, a high-concentration snowstorm starts to be caught on the road opposite to the snowbreak fence since the direction of the snowstorm is 30 degrees. At 60 degrees, the road on the snow fence side also gets involved, the visibility of the entire road deteriorates, and it cannot be said that the function as a snow fence is sufficiently fulfilled.

On the other hand, in the curved snow fence with a snowstorm deflector according to the present embodiment, even if the direction of the snowstorm is 60 degrees, the snowstorm does not get caught in the road, and the snowstorm reaches the passenger car visibility height H. It can be seen that the visibility of the entire road is sufficiently ensured, and that it plays a role as a snow fence that blows off the snowstorm to the lee.

7 and 8 show a modification of the present embodiment. The snow blowing deflecting plate 11 is formed from an upper vertical plate portion 11A and a lower inclined plate portion 11B by bending the lower portion from the center toward the direction of snow blowing to be blown from the oblique direction to the snow fence 1. The same effect can be obtained even if the snowstorm deflecting plate 11 is formed in this way.

It is an external appearance perspective view of a curved snow fence with a snowstorm deflector. It is a side view which shows the flow of the snowstorm around the curved snow fence with a snowstorm deflector. It is a top view which shows the flow of the snowstorm around the curved type snow fence with a snowstorm deflection board. It is explanatory drawing which shows the flow of the snowstorm sprayed diagonally with respect to the curved snow fence with a snowstorm deflection board at the time of setting the installation space | interval of a snowstorm deflection board to 4 m. It is explanatory drawing which shows the flow of the snowstorm sprayed diagonally with respect to the curved snow fence with a snowstorm deflector board at the time of setting the installation space | interval of a snowstorm deflector board to 2 m. It is a figure which shows the density distribution of the snowstorm of various snow fences. 7 and 8 relate to a modification of the curved snow fence with a snowstorm deflector, and FIG. 7 is a front view. It is a side view of a curved snow fence with a snowstorm deflector.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Curved snow fence with a snowstorm deflector 4 Lower vertical board part 5 Upper curved board part 6, 11 Snowstorm deflector A A leeward direction of a snowstorm

Claims (4)

An upper curved plate portion having a guide surface composed of a convex curved surface that curves obliquely upward facing the leeward direction of the snowstorm, and a lower vertical plate portion having a blowing surface substantially perpendicular to the leeward direction of the snowstorm A plurality of snowstorm deflecting plates are provided on the upper curved plate portion so as to protrude in a direction opposite to the leeward direction of the snowstorm. Curved snow fence with deflection plate. The curved snow fence with a snow blowing deflecting plate according to claim 1, wherein the snow blowing deflecting plate is detachable. 2. The curved snow fence with a snow blowing deflecting plate according to claim 1, wherein the snow blowing deflecting plate has an installation interval in a lateral direction of about 2.5 times the protruding width. The curved snow fence with a snow blowing deflecting plate according to claim 1, wherein the snow blowing deflecting plate has a projecting width of about 0.4 m to 0.8 m and a lateral installation interval of about 1 m to 2 m.

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