JP3731124B2 - Snowfall prevention device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for preventing the occurrence of a snowfall installed at an upper edge portion of a building.
[0002]
[Prior art]
[0003]
In a snowfall area, if there is a wind during snowfall, the snow on the roof will come out to the upper edge of the leeward side of the building, and a snowfall will occur. This snow leopard occurs when the wind blowing over the roof becomes a vortex that winds down on the lee side of the building and winds downward, and the carried snow adheres to the snow on the roof due to its stickiness. , It gradually grows towards the leeward. Largely grown snow caskets fall by their own weight, which can harm passersby and damage buildings.
[0004]
As a device for preventing such damage and damage caused by a snowfall, for example, there is a snowfall prevention device proposed by the present inventors.
[0005]
As shown in FIG. 5, the main body 2 having a right-angled triangular cross section is placed on the leeward parapet 1 on the roof of the building, the vertical plate 3 is directed to the outside (leeward side) of the building, and the inclined plate 4 is placed. Along the inner side (upper windward side), the height is adjusted and the snowboard 5 is vertically fixed to the top of the main body 2.
This device for preventing snowfall changes the direction of the wind that blows over the building by the inclined plate 4 and increases the wind speed, thereby moving the position of the vortex generated on the lee side of the building far from the wall surface. To prevent the occurrence of a snow leopard (see Patent Document 1).
[0006]
[Patent Document 1]
Japanese Patent No. 2882888 [0007]
[Problems to be solved by the invention]
However, if the snow cover exceeds the amount assumed in advance and the entire inclined plate 4 is buried in the snow cover 6, the snow standing plate 5 standing upright will block the wind and is carried by the wind. The accumulated snow gradually accumulates in the region 7 on the windward side of the snow cut plate 5.
Eventually, the top surface 8 of the snow on the roof rises to the top of the snow-cutting plate 5, and the amount of snow on the roof increases by the height of the snow-cutting plate 5 to load the snow load on the building. Was supposed to increase.
In addition, the wind 9 blowing along the substantially horizontal upper surface 8 of the snow is drawn downward on the leeward side of the building and forms a vortex, so that a snowfall 10 is generated.
[0008]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an apparatus for preventing the occurrence of snowfall that does not generate snowfall even when the amount of snow exceeds a previously assumed amount.
[0009]
[Means for Solving the Problems]
[0010]
The snow scum occurrence prevention device according to claim 1 is a snow sag occurrence prevention device installed with the inclined surface facing the windward side, wherein the inclined surface stands up from about 45 ° to 60 ° from the horizontal plane. b and an upper inclined plate d which is continuous upward and rises about 75 ° to 80 ° from the horizontal plane .
[0011]
According to a second aspect of the present invention, there is provided a snow scum occurrence prevention device, wherein the slant surface is arranged with the inclined surface facing the windward side, wherein the inclined surface is continuous with the lower inclined plate b and above. The upper inclined plate support frame c supporting the upper inclined plate d on the lower inclined plate support frame a supporting the lower inclined plate b. , Which is attached in a replaceable manner .
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the snow scum occurrence prevention device according to the present invention will be described in detail with reference to FIGS.
[0013]
a is a lower inclined plate support frame body made of aluminum having a trapezoidal cross section and made of aluminum. It is provided with a plurality of trapezoidal reinforcing plates 12, each having a flange 12 ′ formed on the outer peripheral edge, and a trapezoidal side wall 11, 11 having a flange 11 ′ formed on the outer peripheral edge. The bottom plate portion 14, the vertical plate portion 15 and the upper plate portion 16 of the outer plate 13 formed by bending are welded to the flanges 11 ′, 12 ′,... Of the plates 11, 11, 12,. It is stretched and fixed by fixing means such as screws, rivets, etc., and is fully integrated.
[0014]
An upright portion 17 is bent at the front edge of the bottom plate portion 14, and the required fixing means is provided below the flanges 11 ′, 12 ′ on the oblique sides of the plates 11, 11, 12. It is fixed with a stretcher. Further, a drooping portion 18 is bent at the front edge of the upper plate portion 16, and is formed above the flanges 11 '..., 12' ... on the oblique sides of the plates 11, 11, 12 ... The tension is fixed with the required fixing means.
As a result, the lower inclined plate support frame a forms a horizontal rectangular opening 19 between the upright portion 17 of the front edge of the bottom plate portion 14 and the hanging portion 18 of the front edge of the upper plate portion 16. The flange 19 '..., 12' ... of the hypotenuse of each said board 11, 11, 12 ... is made to face the part 19. FIG. Further, a plurality of screw insertion holes 20 are opened at the positions of the flanges 11 ', 12' ... of the plates 11, 11, 12 ....
[0015]
Further, the reinforcing plate 12 is provided with bolt insertion horizontally long holes 21 and 21, and the core plate insertion hole 22 is provided at a position corresponding to the reinforcing plate 12 of the bottom plate portion 14.
[0016]
23 is an upper edge portion of the building and a parapet on the leeward side, and 24... Are anchor bolts planted on the upper surface of the parapet at a predetermined interval. 25 ... is a column base, which is formed by establishing a core plate 27 having bolt insertion vertical long holes 27 ', 27' on a base plate 26 having long holes 26 ', 26'.
The column bases 25 are established and fixed on the upper surface of the parapet 23 by fitting the elongated holes 26 ′ and 26 ′ to the anchor bolts 24, 24, adjusting the positions appropriately, and tightening the nuts 28. ing.
[0017]
Reference numeral 29 denotes a headboard, which is fixed to the upper surface of the parapet 23 by a headboard mounting holder 31 by inserting the core plates 27 of the column bases 25 through the long holes 30.
[0018]
32 ... is a column base cover in which the core plate 27 protruding from the long hole 30 of the headboard 29 is passed through the central window hole 33 and mounted on the headboard 29.
The column base cover 32 is formed by bending the lower edge of the outer peripheral wall 34 inward to form an outer peripheral groove 35 on the lower outer periphery. The outer circumferential groove 35 is filled with a sealing material 36 so that water does not enter between the headboard 29. Further, the gap between the window holes 33 through which the core plates 27 are penetrated is filled with a sealing material so that water does not enter the column base cover 32.
[0019]
The lower inclined plate support frame a is directed to the upper edge portion of the building, that is, for example, on the parapet 23, with the vertical plate portion 15 facing the outside (leeward side) of the building and the opening portion 19 being the building. It is attached toward the inside of the object (above the windward side).
More specifically, the lower inclined plate support frame a is assembled in advance, and the core plate insertion holes 22 are fitted into the core plates 27 of the column bases 25 from below to lower the height and length. The position in the horizontal direction orthogonal to the direction is appropriately adjusted within a certain range according to the situation at the site, and then the bolt insertion horizontal long holes 21 and 21 of the reinforcing plate 12 and the bolt insertion vertical long hole 27 of the core plate 27. The fixing bolts 37 and 37 are inserted into the locations where “, 27” intersect, and the nuts are screwed and tightened.
[0020]
b is a lower inclined plate in which a curved surface 38 ′ is continuously provided on one side of the flat surface 38. Screw insertion holes 39 are formed at positions corresponding to the screw insertion holes 20 of the lower inclined plate support frame a of the lower inclined plate b. The lower inclined plate b inserts screws into the screw insertion holes 20, 39... To close the opening 19 of the lower inclined plate support frame a, and the flat surface 38 is located above the windward side. And is supported in an inclined state.
[0021]
The lower inclined plate b is optimal to prevent the occurrence of snowfall by raising about 45 ° to 60 ° from the horizontal plane.
[0022]
In addition, the attachment operation | work to the upper edge part (parapet 23) of the building of the lower inclination board support frame body can be performed toward the inner side of the building as mentioned above, The lower part Since the inclined plate b can be attached to the inclined plate support frame a from the roof side, installation work can be performed safely without assembling a scaffold outside the building, and the installation work cost can be reduced.
[0023]
c is an aluminum upper inclined plate support frame having a right-angled triangular cross section, and has right and left side walls 40, 40 standing on the right and left sides, and a bend-formed exterior on each side thereof. The bottom plate portion 42, the vertical plate portion 43, and the hanging plate portion 44 of the plate 41 are stretched and fixed by fixing means such as welding, screws, rivets or the like, and are integrally integrated.
The hanging plate portion 44 hangs from the upper edge of the vertical plate portion 43 to the middle of the oblique side of the side walls 40, 40, and a horizontal rectangular opening 45 is formed on the lower side thereof. Further, screw insertion holes 46 are formed at required positions of the bottom plate portion 42 and the hanging plate portion 44.
[0024]
The upper inclined plate support frame c is mounted on the lower inclined plate support frame a by superimposing the bottom plate portion 42 on the upper plate portion 16 of the lower inclined plate support frame a, and there is a required position. It is attached so as to be exchangeable by the attaching means. For example, the screws are inserted into the screw insertion holes 46 of the bottom plate portion 42 of the upper inclined plate support frame c and the screw insertion holes 20 of the upper plate portion 16 of the lower inclined plate support frame a, and screwed. Although it can be attached by tightening and tightening, it may be attached by other appropriate means.
The attaching operation can be easily performed by inserting a hand through the opening 45.
[0025]
Reference symbol d denotes an upper inclined plate having a required size for closing the opening 45 of the upper inclined plate support frame c, and a skirt portion d ′ is continued to a lower edge of the upper inclined plate via a bent portion. The upper inclined plate d has screw insertion holes 47 in the upper edge portion and the skirt portion d ′.
[0026]
The upper inclined plate d is inserted into the upper inclined plate support frame c through the opening 45 of the upper inclined plate d and overlapped with the hanging plate portion 44 to be screwed into the screw insertion holes 47, 46,. Are inserted and tightened, and the skirt portion d 'is superposed on the hanging portion 18 of the lower inclined plate support frame a, and screws are inserted into the screw insertion holes 47, 20. The inclined plate support frame c is attached with its opening 46 closed, and is supported in a state where the inclined surface is continuous above the lower inclined plate b.
[0027]
The upper inclined plate d is supported in an inclined state standing about 75 ° to 80 ° from a horizontal plane, and is steeper than the lower inclined plate b.
As a result, the lower inclined plate b and the upper inclined plate d continuous with the lower inclined plate b as a whole form a bent surface whose upper portion is steeper than the lower portion.
[0028]
As described above, the snow scum occurrence prevention device of the present invention is installed in a state where the inclined surface faces the windward side, and the inclined surface is continuous with the lower inclined plate b and the upper inclined portion with a steeper slope than that. Since the lower inclined plate b guides the wind to the upper inclined plate d, the upper inclined plate d smoothly directs the wind guided from the lower inclined plate b and increases the wind speed. The position of the vortex generated in the lee of the building is moved away from the wall surface, thereby preventing the occurrence of snowfall.
In addition, since the upper inclined plate d is inclined by standing up to about 75 ° to 80 ° from the horizontal plane, even if the snow cover exceeds the amount assumed in advance and the lower inclined plate b is filled with snow, the wind is dammed. Guide upward without stopping.
Therefore, the wind speed is increased smoothly and the vortex generated in the lee of the building is separated from the wall surface, so that no snow canopy is generated.
[0029]
Since the upper inclined plate support frame c supporting the upper inclined plate d is mounted on the lower inclined plate support frame a in an exchangeable manner, the lower inclined plate support frame a and the lower inclined plate are attached. b is manufactured to have a certain size, and the upper inclined plate support frame c and the upper inclined plate d are exchanged for appropriate sizes, so that the weather condition of the installation site, the shape of the roof, the area, etc. The overall height can be easily adjusted according to the
That is, since the lower inclined plate support frame a and the lower inclined plate b manufactured at a constant height can be used regardless of the installation location, the manufacturing cost of the apparatus is reduced.
[0030]
In addition, when there is a possibility that the amount of snow on the roof may exceed the expected amount due to changes in weather conditions after installation, the upper inclined plate support frame c and the upper inclined plate d are replaced with higher ones. It is economical because it is possible to prevent the occurrence of a snowfall by itself and there is no need to replace the lower inclined plate support frame body a and the lower inclined plate b.
[0031]
When arranging a plurality of the above-mentioned snow candy preventing devices in a line in the longitudinal direction, as shown in FIG. 4, for example, bolts 48... Tighten with a nut. The lower inclined plate support frame a has sufficient strength because the reinforcing plates 12 are disposed inside, but the strength is further increased as a whole by continuously connecting in the longitudinal direction. Can do.
[0032]
【The invention's effect】
As is apparent from the above description, the snow scum occurrence prevention device according to the first aspect of the present invention has the following effects.
[0033]
In the snow leopard prevention device installed with the inclined surface facing the windward side, the inclined surface is a lower inclined plate that stands up about 45 ° to 60 ° from the horizontal plane , and the upper inclined plane that is continuous above the horizontal plane is 75 ° to 80 ° from the horizontal plane. Since the upper inclined plate stands up to about ° , the lower inclined plate guides the wind to the upper inclined plate, and the upper inclined plate smoothly directs the wind guided from the lower inclined plate to increase the wind speed. The position of the vortex generated in the lee of the building is moved away from the wall.
[0034]
Therefore, the position of the vortex generated on the leeward side of the building can be separated from the wall surface, and the generation of the snow canopy can be surely prevented.
In addition, since the upper inclined plate d is in an inclined state, even if the lower inclined plate is filled with snow, the wind flow is separated from the wall surface of the building by guiding it upward without blocking the wind and increasing the wind speed. Can be prevented.
[0035]
According to the present invention snowfall prevention device according to the present invention, in the snowfall generation prevention device installed with the inclined surface facing the windward side, the inclined surface is continuous with the lower inclined plate and above it. The upper inclined plate support frame that supports the upper inclined plate is replaceable on the lower inclined plate support frame that supports the lower inclined plate. The lower inclined plate support frame and the lower inclined plate are manufactured to have a certain size, and the upper inclined plate support frame and the upper inclined plate are exchanged for appropriate sizes. Thus, the overall height can be easily adjusted according to the weather conditions at the installation location, the shape, area, etc. of the roof.
[0036]
That is, since the lower inclined plate support frame and the lower inclined plate manufactured to a certain height can be used regardless of the installation location, the manufacturing cost of the apparatus is reduced.
Furthermore, even when there is a possibility that the amount of snow on the roof may exceed the expected amount due to changes in weather conditions after installation, it is economical because there is no need to replace the lower inclined plate support frame and the lower inclined plate.
[Brief description of the drawings]
FIG. 1 is a perspective view of an apparatus for preventing snow scum occurrence according to an embodiment of the present invention.
FIG. 2 is an enlarged sectional view taken along the line II of the above.
FIG. 3 is an exploded perspective view of the above.
FIG. 4 is a perspective view showing a state in which the snow scum occurrence prevention devices are arranged in the longitudinal direction.
FIG. 5 is a cross-sectional view of a conventional snow leopard generation prevention device.
[Explanation of symbols]
a Lower inclined plate support frame b Lower inclined plate c Upper inclined plate support frame d Upper inclined plate

Claims (2)

In cornice prevention apparatus installed an inclined surface in a state toward the windward side, the inclined surface is, the lower inclined plate standing upright 45 ° ~ 60 ° about the horizontal plane, 75 ° ~ than continuous horizontal plane thereabove 80 A device for preventing the occurrence of snow scum, characterized by comprising an upper inclined plate that stands up to about ° . In the device for preventing snow scum from being installed with the inclined surface facing the windward side, the inclined surface is composed of a lower inclined plate and an upper inclined plate that is continuous and steeply above the upper inclined plate. An apparatus for preventing occurrence of a snow skein, characterized in that an upper inclined plate support frame supporting a plate is replaceably mounted on a lower inclined plate support frame supporting the lower inclined plate.

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