JP2006097292A - Snow fence - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a snow fence which contributes to reduction in snow accumulation on a road etc. in winter, and relief of visibility obstruction, wherein the snow fence facilitates switching from a used state to an unused state and vice versa, and maintains a low altitudes from the ground when housed, to thereby contributes to traffic safety and beautiful appearance. <P>SOLUTION: The snow fence has supports 10 for ascending/descending along vertical sheath pipes 2, and a snow guard board 20 arranged on an upper portion of the supports 10, for folding/expanding along the supports 10. According to the snow fence, the snow guard board 20 is expanded according to ascent of the supports 10, and folded and housed according to descent of the supports 10, by abutting a lower portion of the snow guard board 20 on an abutting arm 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a snow fence installed on the side of a road in order to reduce the amount of snow on a road during winter and to reduce visibility obstacles.

  Conventionally, snow fences that fold snow panels and store props are known from the standpoint of traffic safety and aesthetics except during the winter period.

  For example, in Japanese Utility Model Publication No. 62-15291, a snow prevention plate is disposed between a pair of support columns, and a guide roller provided at the intersection of the pantograph-like link mechanism is supported by the support columns so that it can be expanded and contracted. The snow guard fence is shown in which the snow guide plate is folded and stored at the upper part of the support pole or deployed to the normal position by fixing the top guide roller to the support pole and winding up and lifting the bottom guide roller with a wire rope. ing.

  This snow fence does not require dismantling / removal and does not obstruct the driver's view.

  Japanese Patent Application Laid-Open No. 2003-201774 discloses an outer cylinder embedded in the basement, an intermediate cylinder, and a snow fence post that expands and contracts to the basement by the inner cylinder.

  Japanese Patent Laid-Open No. 2003-336220 discloses that a moving support is externally fitted to a fixed support on the ground, the moving support is moved up and down, and a plurality of wind and snow plates are provided between the pair of moving posts. A snow fence is shown in which the upper portion of the support frame is a support frame end, and the support frame end is rotated 180 degrees and folded.

  Japanese Patent Laid-Open No. 2003-253625 discloses a beam member in which a telescoping two-stage column member is stored in a storage cylinder on the ground, the column member is raised and lowered, and is built on the top of each column member. There is shown a snow fence that is provided so as to be overlapped with each other in the front-rear direction when the support is stored.

In this snow fence, the required number of supports can be raised by rotating the manual handle of the drive device. That is, when the support member is pushed upward from the housing cylinder, each fence is lifted by the rising of the beam member, shields between the support posts, and performs a snowproof function.
Japanese Utility Model Publication No. 62-15291 JP 2003-201774 A JP 2003-336220 A JP 2003-253625 A

  In the technique disclosed in the Japanese Utility Model Publication No. 62-15291, the snow-proof plate is folded and stored in the upper portion of the support column, and the support column remains standing, and the aesthetic aspect is not taken into consideration.

  Moreover, in the technique in Unexamined-Japanese-Patent No. 2003-201774, it is based on the support | pillar which raises / lowers to a basement, and how to fold and store a snow-protection board is not shown.

  In the technique disclosed in Japanese Patent Application Laid-Open No. 2003-336220, a snow protection plate is provided between a pair of ascending / descending columns, but the snow protection plate remains fixed to the support column and the upper part of the support frame is used as the end of the support frame. The support frame end is folded by rotating 180 degrees, and the snow-proof plate is not folded and stored. The lifting and lowering of the support column and the support frame end must be performed separately. The switching operation is complicated.

  In the technique disclosed in Japanese Patent Application Laid-Open No. 2003-253625, the snow protection plates are both lifted and expanded upward as the support is raised, and the snow protection plates are both lowered and stored downward as the support is lowered. Since the snow-prevention plate is fixed to the column, the snow-prevention plate having the same height as one of the two-stage column members remains on the ground even when stored in the lower part.

  Accordingly, an object of the present invention is to provide a snow fence that is easy to switch between use and non-use, has a low height remaining on the ground when stored, and is excellent in traffic safety and aesthetics.

  The snow fence according to the first aspect of the present invention is a snow fence in which pillars 10 are erected at predetermined intervals on the windward side of the road, and a plurality of snow guard plates 20 are arranged between the pillars 10. A support plate 10 that moves up and down is provided, a snow plate 20 that is folded and deployed along the support column 10 is attached to the upper portion of the support column 10, and the snow plate 20 is deployed as the support column 10 is raised, and the snow plate 20 is moved as the support column 10 is lowered. The lower part of this is in contact with the contact arm 4 and is folded and stored.

  The snow fence according to the invention of claim 2 is configured such that a snow protection plate is disposed between a pair of support columns 10 and is lifted and lowered for each pair of support columns 10 by a hanging metal fitting 30 extending over the pair of support columns 10.

  In the snow fence according to the invention of claim 3, the sheath tube 2 is embedded in the ground E, and the support column 10 is moved up and down to the basement.

  According to the invention of claim 1, a support column that moves up and down along the vertical sheath is provided, a snow plate that is folded and expanded along the column is attached to the upper portion of the column, and the snow plate is expanded as the column rises, When the support is lowered, the lower part of the snow protection plate comes into contact with the abutment arm and is folded and stored.When the support is raised and lowered, the snow protection plate automatically expands and is stored in the folded state. Become.

  According to the second aspect of the present invention, since the snowproof plate is disposed between the pair of support columns, and the weight of the crane is lowered by lifting and lowering each pair of support columns by the hanging metal fittings across the pair of support columns. It is possible to move up and down with such a simple device, and the switching work between use and non-use becomes simple.

  According to the invention of claim 3, since the sheath pipe is embedded in the ground, the support column is raised and lowered to the basement, and the only thing that remains on the ground is the folded snow protection board. The snow fence is low and excellent in traffic safety and aesthetics.

  For the purpose of simplifying the switching work between the use and non-use of the snow fence, a snow support plate 20 is provided which is provided with a support column 10 that moves up and down along the vertical sheath 2 and is folded and deployed along the support column 10 above the support column 10. This is realized by expanding the snow protection plate 20 as the support column 10 is raised, and folding and storing the lower portion of the snow protection plate 20 in contact with the contact arm 4 as the support column 10 is lowered. In addition, it was realized by arranging a snowproof plate between the pair of columns 10 and lifting and lowering each pair of columns 10 by means of a hanging metal fitting 30 extending over the pair of columns 10.

  The purpose of ensuring that the height remaining on the ground when the snow fence is stored is low and that it is excellent in traffic safety and aesthetics is realized by embedding the sheath pipe 2 in the ground E and raising and lowering the column 10 to the basement. did.

  FIG. 1 is a front view of a snow fence (blow-off fence) according to an embodiment of the present invention, and a pile foundation 1 embedded in a windward ground E on a roadside at predetermined intervals, and a pile foundation 1 A hollow sheath tube 2 fixed to the sheath, a support column 10 that moves up and down along the sheath tube 2, and a plurality of horizontally long snow protection plates 20 are arranged between the support columns 10. In this snow fence, the snow board 20 is folded or the column 10 is stored from the viewpoint of traffic safety and aesthetics except during the winter period.

  The pile foundation 1 is a concrete with a round steel pipe with a bottom having a diameter of about 32 cm and a length of about 3.5 m, and is buried in the ground E long in the vertical direction. In the embodiment, it was buried every predetermined interval of 3.5 m.

  The hollow sheath tube 2 is a square steel tube with a side length of 125 mm, which is two long along the road in the vertical direction, and is embedded and fixed in the center of the pile foundation 1. The length is about 15 cm longer than the pile foundation 1. Protruding from the ground E to that extent, a hole for fixing the column 10 is provided at the protruding upper end.

  The support column 10 is an H-shaped steel standing upright in the sheath tube 2, and two of the pile foundations 1 are set up vertically with a nominal size of 100 × 100 and a length of about 3.85 m. . The openings of the H-shaped steel of the column 10 are arranged in parallel to face each other, and a hook 11 is provided on the windward side of the upper end of the column 10.

  Holes for fixing the sheath tube 2 to the upper and lower ends of the support column 10 are provided, and when supporting snow, the support tube 10 is fixed to the hole for fixing the support tube 10 of the lower end portion and the sheath tube 2 through stopper pins 12 When the snow is not snow-proof, it is fixed through a stopper pin 12 to a hole for fixing the hole 10 at its upper end and the pole 10 of the sheath 2 to store the pillar 10 in the basement of the sheath 2.

  The snow plate 20 is arranged between a pair of columns 10 by folding and unfolding a plurality of plates 21 along the column 10 by a pantograph-like link mechanism.

  The snow protection plate 20 is made of a non-perforated corrugated plate (keystone plate) with attachment rods attached to the left and right ends thereof, and is arranged at the top and bottom at an angle of about 60 degrees with the ground E during snow prevention. .

  The left and right sides of the plate 21 are connected by links 22 and 23, the middle of the uppermost (first stage) plate 21 and the upper end of the second stage plate 21 are connected by a short link 22, and the lower end of the uppermost plate 21 The middle of the second stage plate 21 and the upper end of the third stage board 21 are connected by a long link 23, and the lower end of the second stage plate 21 and the middle and lowermost stage of the third stage plate 21 (fourth stage). The upper end of the plate 21 is connected by a long link 23, and the lower end of the third plate 21 and the middle of the lowermost plate 21 are connected by a short link 22.

  These four plates 21 and links 22 and 23 constitute a pantograph-like link mechanism, and guide rollers 24 and 25 projecting left and right are provided in the middle of the plate 21 that is the intersection.

  The guide rollers 24 and 25 fit into the opening of the H-shaped steel of the support column 10, the guide roller 24 of the uppermost plate 21 is fixed to the upper portion of the support column 10, and the guide roller 25 of the lowermost plate 21 from the second step. Is attached so as to move up and down along the opening of the column 10. A stopper that contacts the lower end of the lowermost guide roller 25 is provided in the opening of the column 10.

  The plate 21 is folded and unfolded when the guide roller 25 is moved up and down along the column 10, and the height of the fence when unfolded is about 3.5 m.

  A pair of brackets 3 protruding left and right are provided at the upper ends of the pair of sheaths 2, and the abutting arms 4 are attached to the brackets 3.

  The abutting arm 4 is an L-shaped elongated steel bar, and one end thereof is screwed to the bracket 3 and is attached upward from the bracket 3 along the support column 10 during snow protection. Install horizontally on the side. When the contact arm 4 is leveled, the lower end of the lowermost plate 21 comes into contact when the snowproof plate 20 descends together with the support column 10.

  Next, switching operation to use / nonuse of the snow fence according to the present invention will be described.

  Switching from snow-proof to non-snow-proof, that is, switching to non-use is performed for each pair of columns 10.

  First, the abutment arm 4 is mounted horizontally, and the hanging bracket 30 extending over the pair of columns 10 is supported by hooking the hook 11 with a crane of a crane-equipped truck, the stopper pin 12 is removed, and the column 10 is lowered together with the snow plate 20 Let

  As the support column 10 is lowered, the distance between the guide roller 24 of the uppermost plate 21 and the contact arm 4 is reduced, so that the lower portion of the snow protection plate 20 contacts the contact arm 4 and each plate 21 is folded. , And stored in a stacked state at an angle of about 8 degrees with the ground E. The height of the fence when stored is about 0.6m.

  The strut 10 is lowered to a predetermined position, the stopper pin 12 is inserted into the strut 10, the hanging bracket 30 is removed, the work of the pair of struts 10 is finished, and the work of the adjacent pair of struts 10 is repeated.

  Switching from non-snowproof to snowproof, that is, switching to use is performed for each pair of columns 10.

  First, the hanging metal fitting 30 across the pair of support posts 10 is supported by being hooked on the hook 11 by a crane or the like of a truck with a crane, the stopper pin 12 is removed, and the support post 10 is raised together with the snow protection plate 20.

  As the support column 10 is raised, the distance between the guide roller 24 of the uppermost plate 21 and the contact arm 4 is increased, so that the snow plate 20 is automatically deployed by its own weight. A stopper that contacts the lowermost guide roller 25 is provided at the opening of the support column 10 so that the snowproof plate 20 does not expand beyond a predetermined angle.

  The column 10 is raised to a predetermined position, the stopper pin 12 is inserted into the column 10, the hanging bracket 30 is removed, the abutment arm 4 is attached facing upward, and the work of the pair of columns 10 is completed. Repeat 10 steps.

  In the above embodiment, the example in which the support column 10 is moved up and down by one is shown, but the support column may be moved up and down in multiple stages.

  Moreover, although the example in which the sheath 2 is embedded in the ground E has been shown, the sheath may be provided on the ground.

  Moreover, although the example in which the lower end of the lowermost plate 21 contacts the contact arm 4 provided on the sheath 2 is shown, any member of the lowermost snow protection plate 20 contacts the contact arm 4. For example, the guide roller 25 may be in contact. Furthermore, the contact arm 4 may be provided on the fixed side, and may be provided from the pile foundation 1 or may be used as the upper surface of the pile foundation 1.

  Moreover, although the example which raises / lowers by the hanging metal fitting 30 for every pair of support | pillar 10 was shown, you may make it raise / lower the support | pillar which exceeds two at once. In that case, the middle struts should be one strut per pile foundation.

  Moreover, although the example of the blow-off fence in which the board 21 is kept at an angle of about 60 degrees with the ground E at the time of snow prevention is shown, the blow-off fence or the well fence with which the snow-proof board is expanded to the angle of about 90 degrees with the ground E It is also good.

It is the front view which notched a part which shows one Example of a snow fence. It is the side view which notched the part. It is a figure which shows the time of the non-snowproof of FIG. It is a figure which shows the time of the non-snowproof of FIG. It is sectional drawing which follows the AA line of FIG. It is a figure which shows the time of the non-snowproof of FIG. It is a figure which shows the raising / lowering operation | work of FIG.

Explanation of symbols

2 sheath tube 4 contact arm
10 props
20 Snowboard
30 Hanging bracket E Ground

Claims (3)

  In a snow fence with a plurality of snow protection plates arranged at predetermined intervals on the windward side of the road and a plurality of snow protection plates arranged between the support pillars, a support pillar that moves up and down along the vertical sheath is provided, and the support pillar is placed above the support pillar. A snow fence that attaches and folds along the snow guard plate, and that the snow guard board unfolds as the pillar rises, and that the lower part of the snow guard plate comes into contact with the abutment arm as the pillar descends to fold and store.   The snow fence according to claim 1, wherein a snow protection plate is disposed between the pair of support columns, and is lifted and lowered for each pair of support columns by a hanging metal fitting across the pair of support columns.   The snow fence according to claim 1, wherein the sheath pipe is buried in the ground, and the support column is raised and lowered to the basement.

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