JPH0735646B2 - Snow canopy prevention device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to parapets in buildings, headlines, protective walls in elevated railroads and elevated roads, and upper edge portions of works (advertising towers, signs, traffic lights, etc.). The present invention relates to a device for preventing snow eaves from occurring at entrances and exits of tunnels, snow shelters, snow sheds, and cliff top edges.

(Prior Art) Conventionally, in a snowfall region, snow canopies are generated on the windward side at the upper edge portions of the buildings, works, structures, etc., and then increase and further fall. For example, on the rooftop snow canopy, which is carried by the wind that blows on the roof surface, grows toward the leeward while adhering due to its stickiness when it blows over the headstock. Therefore, it occurs only during snowfall. For this reason, snow canopies are generated in the building, and if the snow canopy further increases, the snow canopy itself cannot withstand the load and falls, damaging the underlying building or damaging passersby etc. There is a risk. In addition, when snow canopies occur on the upper edge of the above-mentioned protective wall, there is a similar concern, and inside and outside the elevated railroads and elevated roads,
Also, if you fall from the entrance / exit of a tunnel, snow shelter, snow shed, or the upper edge of a cliff, there are problems such as traffic danger and obstacles.

(Object of the Invention) The present invention has been made in view of the above circumstances, and an object thereof is to provide a preventive device that effectively prevents the occurrence of snow canopies as described above.

(Means for Achieving the Purpose) In order to achieve the above object, the snow canopy preventing device according to the invention of claim 1 is a parapet in a building, a headstock, a protective wall in an elevated railway or an elevated road, Blowing part 3 provided directly on each upper edge portion of the work (advertising tower, signboard, traffic light, etc.) or entrance / exit of the tunnel, snow shelter, snow shed, cliff top edge portion, and the like,
It is composed of a blow-off blow-up portion 4 which is located directly above the blow-up portion 3 and which is continuously arranged via a slit-shaped gap portion,
An inclined surface that guides the wind upward with respect to the windward side is formed in the blow-up portion 3, and the inclined surface of the blow-up portion 3 has a longitudinal direction with respect to the blow-up portion 3. Alternatively, a plurality of convex objects are formed at intervals so as to guide the wind blown in an oblique direction to the gap portion, and the windward side surface of the blow-off blow-up portion 4 moves the wind upward or downward. It is characterized in that it is formed to have a flat shape, a bent shape, or a curved shape so as to guide.

The snow canopy prevention device according to the invention of claim 2 is
In the snow canopy prevention device according to claim 1, the slit-shaped gap is configured to be adjustable in expansion and contraction.

The snow canopy prevention device according to the invention of claim 3 is
The snow canopy prevention device according to claim 1 or 2, wherein a vertical blow-off blower portion 13 is formed immediately above the blow-off blow-up portion 4 so as to be vertically connected through a slit-shaped gap.
The surface on the windward side of the vertical blow-off part 13 is characterized by being formed in a flat shape, a refraction shape, or a curved shape so as to guide the wind to the gap side.

The snow canopy prevention device according to the invention of claim 4 is
4. The snow canopy preventing device according to claim 3, wherein a horizontal upper blow-off part 4'is continuously provided at a position directly above the vertical blow-off part 13 and winds in the upper blow-off part 4 '. The upper surface is formed in a flat shape, a bent shape, or a curved shape so as to guide the wind upward or downward.

The snow canopy prevention device according to the invention of claim 5 is
Directly on parapets in buildings, barriers, protective walls on elevated railways and elevated roads, top edges of work pieces (advertising towers, signs, traffic lights, etc.), tunnel entrances, snow shelters, snow sheds, cliff top edges, etc. The blow-up blower 3 is provided below, the blow-up blow-up unit 4 is provided directly above the blow-up unit 3 via a slit-shaped gap, and the blow-off blow-up unit 4 is provided above the blow-up blower. At a position directly above the raising portion 4, there is a vertical blow-off blowing portion 13 which is continuously provided via a slit-like gap portion and is positioned above. The upper end surface of the blowing portion 3 has a windward side with respect to the windward side. Is formed, and the windward surface of the blow-off and blow-up part 4 is formed in a flat shape, a bent shape, or a curved shape so as to guide the wind upward or downward. Vertical blow-off part 13
The surface on the windward side of is formed in a flat shape, a refraction shape, or a curved shape so as to guide the wind inward.

The snow canopy prevention device according to the invention of claim 6 is
In the snow canopy prevention device according to claim 5, the slit-shaped gap portion is configured to be adjustable in expansion and contraction.

The snow canopy prevention device according to the invention of claim 7 is
7. The snow canopy preventing device according to claim 5 or 6, wherein a horizontal upper blow-off part 4'is continuously provided at a position directly above the vertical blow-off part 13 and the upper blow-off part 4'is provided. The windward surface in is flat to guide the wind up or down,
It is characterized in that it is formed in a bent shape or a curved shape.

The snow canopy prevention device according to the invention of claim 8 is
Parapets in buildings, headlines, protective walls in elevated railways and elevated roads, works (advertising towers, signs, traffic lights, etc.)
Each upper edge part of, tunnel entrance, snow shelter,
A blow-up portion 3 located directly below the snow shed, the upper edge of a cliff, etc., and a vertical blower that is vertically provided directly above the blow-up portion 3 through a plurality of slit-shaped gaps. It consists of a blow-up part 13 and the blow-up part 3 has
An inclined surface for guiding the wind upward with respect to the windward side is formed, and the surface on the windward side in the vertical blow-off and blow-up part 13 is flat, bent so as to guide the wind to the gap, Alternatively, it is formed in a curved shape.

(Operation and Effect of the Invention) According to the snow canopy generation preventing device of the first aspect, the blowing portion 3
The wind blowing from the front direction is guided by the inclined surface of the blow-up portion 3, accelerates its speed, and passes through the slit-shaped gap portion. In the blow-off part 4 as well, the wind is guided to the windward side, the wind speeds up and passes through, creating a spiral in the distance. Therefore, the snow that flies with the wind will swirl in the distance, so no snow canopy will occur.

In addition, the wind blown in the longitudinal direction or the oblique direction with respect to the blow-up portion 3 changes its direction by the convex object 7 on the inclined surface of the blow-up portion 3, speeding up the speed of the blow-up portion 3. Passing through the slit gap, snow swirls in the distance with the wind,
Generation of snow canopies is prevented.

In this way, even if the wind blows on the blowing portion 3 in the front direction or in the longitudinal direction or in the oblique direction, the formation of snow canopies is effectively prevented.

According to the invention of claim 2, by adjusting the slit-shaped gap portion according to the wind conditions to adjust the passage of the wind, it is possible to more effectively prevent the formation of snow canopies.

According to the invention of claim 3, the wind passing above the inclined surface of the blow-off blow-up part 3 blows through the slit-shaped gap of the vertical blow-off blow-up part 13 and swirls in the distance, so the blow-off blow-up part 3 It prevents the formation of snow canopies.

According to the invention of claim 4, since the windward side surface of the upper blow-off part 4'is formed so as to guide the wind upward or downward, the wind guided downward is the slit shape. The wind passes through the gap with speed, and the wind guided upward passes the upper blow-off part 4'with speed. Therefore, it is possible to prevent snow eaves from being generated in the vertical blow-off part 13.

Next, according to the invention of claim 5, since the blowing portion 3 does not have the convex object 7, it is particularly effective against wind and rain blowing on the blowing portion 3 from the front. The function and effect of the blow-up unit 3, the blow-off blower unit 4, and the vertical blow-off unit 13 are the same as described above.

According to the invention of claim 6, by adjusting the slit-shaped gap portion according to the wind condition to adjust the passage of the wind, it is possible to more effectively prevent the formation of snow canopy.

According to the invention of claim 7, since the windward surface of the upper blow-off part 4'is formed so as to guide the wind upward or downward, the wind guided downward is the slit shape. The wind passes through the gap with speed, and the wind guided upward passes the upper blow-off part 4'with speed. Therefore, it is possible to prevent snow eaves from being generated in the vertical blow-off part 13.

According to the invention of claim 8, the wind guided upward by the inclined surface of the blow-up part 3 blows through the slit-shaped gap part of the vertical blow-off part 13 and swirls in the distance, so that the formation of snow canopies is prevented. To be done.

As described above, according to the present invention, since the formation of snow canopies can be prevented with a simple structure, it is economical, and protects other buildings, vehicles and people from the danger of falling of the snow canopies, and also improves traffic safety. It can be secured.

(Embodiment) In FIGS. 1 to 6, reference numeral 1 is a snow canopy prevention device. Reference numeral 2 denotes an upper edge portion of a parapet, an upper edge portion of a headstock, in a building where the snow canopy prevention device is to be installed.
Upper edge of protective walls on elevated railways and elevated roads, upper edge of work pieces (advertising towers, signs, traffic lights, etc.), upper edge of tunnel entrances, snow shelters, snow shed upper edge, cliffs For example, the upper edge part.

In addition, the snow shelter is for covering the roads and passages in order to protect the roads from snowfall and drifts, and the snow shed is for protecting the roads and passages from avalanches, rockfalls, landslides, etc. It is an eaves-like object that is placed over roads and passages, and is called Snowshed, Rockshed, Earthshed, etc., but here they are collectively called Snowshed.

The snow canopy prevention device 1 includes parapets in buildings, protective walls in elevated railways and elevated roads, works (advertising towers, signs, traffic lights, etc.), tunnel entrances and exits, snow shelters, snow shed entrances and exits, and cliff tops. And so on
The blow-off portion 3 provided directly below and having a longitudinal direction above the upper edge portion 2 and continuously provided at a position directly above the blow-up portion 3 via a slit-like gap D. It consists of a blowing section 4.

A plurality of convex objects 7 are formed on the upper surface of the blowing portion 3. The blow-up part 3 is a plate-shaped body having an appropriate width and an appropriate thickness, which is attached to the upper surface of the upper edge portion 2 in the longitudinal direction of the upper edge portion 2.

The upper end surface of the blowing portion 3 is formed with an inclined surface 3A having an angle with respect to the windward side 6A so as to guide the wind upward. In this case, the blow-up portion 3 may be integrally formed with the upper edge portion 2 or may be separately manufactured.
It may be attached to the upper part of. In addition, the slope 3A of the blowing part
The angle may be any angle that can guide the wind, but it is effective if it is 45 ° or more.

As the material of the blow-off part 4, a wide range of materials such as a material coated with a fluororesin, ceramics, aluminum, stainless steel, a color steel plate, a material such as wood that is hard to adhere to snow, and a paint are used.

A convex object 7 in the lateral direction on the upper surface of the blow-up part 3
Are provided along the inclined surface 3A. In this embodiment, the plate-like members are formed vertically with the same width. In addition, the convex object 7
Is only required to guide the wind from the longitudinal direction and the oblique direction to the slit-shaped gap. Therefore, if the inclination is steep, the height is high, and if the inclination is gentle, the height may be low.

The blow-off blow-up part 4 and the blow-up part 3 are plate-like bodies having an appropriate width and an appropriate thickness, which are supported in parallel via appropriate support legs 5. This plate-like body has three surfaces joined together, and has a triangular vertical cross section. In the surface 4A of the windward side 6 of the blow-off part 4, the upper and lower inclined surfaces 4B and 4C having an appropriate angle so as to guide the wind are formed in a V-shape in a cross section by bending. .

The blow-off blow-up part 4 in the embodiment of FIG. 1 has a plate-shaped body having a triangular vertical cross-section, but the present invention is not limited to this, and as shown in FIGS. Other shapes, such as a flat V-shape or a bent V-shape having only two sides and a curved shape are also available.

That is, it includes a case where the blow-off and blow-up section 8 of FIG. A is used in a flat shape and is used vertically, and a case where the surface 8A is inclined with respect to the wind direction. In addition, the blow-off blow-up part 10 of FIG.
As in 11, the curved surfaces 10A and 11A may be formed. Further, it may be formed as a refracting surface 12A like the blow-off part 12 in FIG. The through-hole 9 may be punched like the blow-off blow-up portion 8'of FIG. B, the blow-off blow-up portion 11 'of FIG. E, and the blow-off blow-up portion 12' of FIG. .

The slit-shaped gap D is formed by the support leg 5, and the support leg 5 is formed by the upper and lower parts 5A, as shown in FIG. 2, for example.
5B, and the adjustment holes 5A1, 5B1 on both sides are 5C
It is good to connect with. In addition, it is preferable that the above-mentioned gap portion D can be expanded and contracted according to the condition of the installation place.

According to the snow canopy generation preventing device, the wind blowing from the front direction of the blow-up portion 3 is guided to the inclined surface 3A of the blow-up portion 3, accelerates its speed, and passes through the slit-shaped gap portion D. In the blow-off part 4 as well, the wind is guided to the windward side, the wind speeds up and passes through, creating a spiral in the distance. Therefore, the snow that flies with the wind will swirl in the distance, so no snow canopy will occur.

Further, the wind 6A blown in the longitudinal direction or the oblique direction with respect to the blow-up part 3 has a convex object 7 on the inclined surface 3A of the blow-up part 3.
By changing the direction, the speed is increased to pass through the slit-shaped gap on the blow-up part, and the snow also swirls in the distance with the wind to prevent the formation of snow canopies.

In this way, even if the wind blows on the blowing portion 3 in the front direction or in the longitudinal direction or in the oblique direction, the formation of snow canopies is effectively prevented.

By adjusting the slit-shaped gap D according to wind conditions to adjust the passage of wind, it is possible to more effectively prevent the formation of snow canopies.

Inclination angle θ1 of blow-up part 3 and inclination angle θ of blow-off part 4
The angles 2 and θ3 are not limited, and may be inclined with an angle. Further, the size of the gap D between the blow-up part 3 and the blow-off part 4 is about 20% of the wind guide width 1L in order to separate the stickiness of snow and the vortex generated in the leeward from the wall surface. do it.

The convex 7 may have a triangular cross section as shown in FIG. Further, the blow-off blow-up part 4 may be separated at a predetermined interval as shown in FIG. In this case, a part of wind and snow passes through the gap D ′ between the blow-off and blow-up units 4 at an increased speed.
Further, as shown in FIG. 6, the snow-cutting plate 4D can be attached to the upper ridge portion of the blow-off and blow-up portion 4 in a state of being divided or not shown but over the entire side. In this case, even if snow accumulates on the inclined surface 4B, the adhesion of the snow can be reduced, and the snow cane can be dropped before it grows.

Next, as shown in FIG. 7 and FIG. 8, a vertical blow-off part 13 vertically connected to the blow-off part 4 via a slit-shaped gap D ″ is vertically provided. The windward side surface of the vertical blow-off part 13 is formed in a refraction shape (may be flat or curved) so as to guide the wind to the gap D ″ side. A flat inclined surface 13 'is formed on the windward surface of the upper end of the vertical blow-off part 13.

Therefore, the wind moving above the inclined surface of the blow-off part 4 blows through the slit-shaped gap D ″ of the vertical blow-up part 13 and swirls in the distance, so that a cornice is generated in the blow-off part 4. In addition, when the wind blowing on the upper end of the vertical blow-up blower 13 hits the flat inclined surface 13 ',
It is blown up and swirls are generated in the distance, preventing the formation of snow canopies.

Further, the snow canopy prevention device 1D shown in FIG. 9 has a higher blow-off part 4'consistently arranged directly above the vertical blow-off part 13. An inclined surface 4'B is provided on the upper blow-off part 4 '.
And 4'C are formed, and the wind that hits the inclined surface 4'C passes through the gap D ", but the wind that hits the inclined surface 4'B is blown up to generate swirls in the distance. It is possible to prevent snow eaves from being generated at the upper end of the lifting portion 13. A snow shaving plate 4'D is attached to the upper ridge of the upper blow-off blowing portion 4'over all sides. The cutting plate 4'D may be omitted.

Next, the convex object 7 may not be formed on the inclined surface of the blowing portion 3. That is, in the example of FIGS. 10 and 11, the convex object 7 is removed from the example of FIG. 7, and even in this case, the wind is not blown up between the blow-up part 3 and the blow-off part 4. Since it passes through the gap portion D between them and the gap portion D ″ formed in the vertical blow-off blow-up portion 13 at an increased speed, it is possible to effectively prevent the formation of snow canopies.

As shown in FIGS. 12 and 13, the upper end of the vertical blow-off part 13 is formed as an inclined surface 13 'with respect to the windward, so that the vertical blow-off part 13' is blown toward the inclined surface 13 '. The wind passed the upper end of the vertical blow-off part 13 at an increased speed,
Since a swirl is generated in the distance, snow canopies are prevented from being generated at the upper end of the vertical blow-off part 13.

In the snow canopy prevention device shown in FIG. 14 and FIG. 15, an upper blow-off blower 4'is continuously provided at a position directly above the vertical blow-off blower 13. An inclined surface 4'B is provided on the upper blow-off part 4 '.
And 4'C are formed, and the wind that hits the inclined surface 4'C passes through the gap D ", but the wind that hits the inclined surface 4'B is blown up to generate swirls in the distance. The formation of snow canopies is prevented from occurring at the upper end of the lifting portion 13. In addition, in the case shown in Fig. 16 and Fig. 17, a snow shaving plate 4'D is provided on the upper ridge of the upper blow-off blowing portion 4 '. It is an example of forming.

Next, FIG. 18 and FIG. 19 show that the blow-up portion 3 provided directly on the upper edge portion 2 and the like are connected to the position directly above the blow-up portion 3 through a plurality of slit-shaped gap portions D ″. A snow canopy generation preventing device including a vertical blow-off and blow-up part (13) installed above.

The blow-up part 3 is the same as that shown in FIG.
The upper end surface is formed with an inclined surface 3A having an angle so as to guide the wind upward with respect to the windward side, and the windward side surface of the vertical blow-off blow-up part 13 is shown in FIG. As shown, it is formed in a flat shape, a curved shape, or a bent shape.

Therefore, the wind coming toward the blow-up part 3 hits the inclined surface 3A of the blow-up part 3 and is blown up, and then speeds up the slit-shaped gap D ″ between the vertical blow-off parts 13. Further, it passes through the gap D ″ after hitting the vertical blow-off and blow-up part 13 to make a spiral in the distance, and swirls in the distance, so that no cornice is generated.

As shown in FIGS. 20 and 21, the windward surface of the upper end portion of the vertical blow-off blower 13 is flat and has an inclined surface 13 '.
By doing so, the wind hitting the inclined surface upward is blown upward, goes far, and swirls there, so that the formation of snow canopies is prevented.

Therefore, it is economical and can protect the other buildings, vehicles and people from the danger caused by the falling of the eaves, and can secure the traffic safety.

[Brief description of drawings]

1 is a perspective view of an embodiment of the present invention, FIG. 2 is an exploded perspective view of a support leg in FIG. 1, FIG. 3 is a side view for explaining the operation in FIG. 1, and FIGS. Various perspective views of the blow-off blow-up part, FIG. 5 is a perspective view of an embodiment in which the blow-off blow-up part is divided, and FIG. 6 is a perspective view of a state in which a snow cutting board is attached, FIG. Is a perspective view of an embodiment in which a vertical blow-off part is added, FIG. 8 is a perspective view for explaining the operation in FIG. 7,
FIG. 9 is a perspective view of an embodiment in which an upper blow-off part is added, FIG. 10 is a perspective view of an embodiment in which a convex object is not attached, and FIG. 11 explains the operation in FIG. Side view, first
FIG. 12 is a perspective view of an embodiment in which an inclined surface is formed at the upper end of the vertical blow-off part, FIG. 13 is a perspective view for explaining the operation in FIG. 10, and FIG. 14 is an upper blow-off part. FIG. 15 is a perspective view showing the state of FIG.
FIG. 16 is a perspective view provided with a snow cutting board, FIG. 17 is a side view for explaining the operation in FIG. 16, and FIG. 18 is a perspective view of an embodiment including a blowing section and a vertical blowing section. FIG. 19 is a side view for explaining the operation in FIG. 18, FIG. 20 is a perspective view of another embodiment, and FIG. 21 is a perspective view for explaining the operation in FIG. Reference numeral 1 ... Snow canopy prevention device, 2 ... Upper edge portion, 3 ... Blowing part, 4, 8 ... Blowing up part, 4 '... Upper blowing part,
5 ... Support legs, 7 ... Convex object, 13 ... Vertical blow-off part, D ...
Gap

Claims (8)

[Claims] 1. A parapet, a headline, a protective wall in an elevated railway or an elevated road, a work (advertising tower, signboard,
Each of the upper edge portions of the traffic light, etc., the entrance / exit of the tunnel, the snow shelter, the snow shed, the upper edge portion of the cliff, and the like, and a slit-like gap at a position directly above the above-mentioned blow-up portion 3. It consists of the blow-off blow-up part 4 located above and connected to the blow-up part 3 by means of
An inclined surface is formed to guide the wind upward with respect to the windward side, and the inclined surface of the blow-up portion 3 blows in the longitudinal direction or the oblique direction with respect to the blow-up portion 3. A plurality of convex objects 7 are formed at intervals so as to guide the air to the above-mentioned gap portion, and the windward surface of the blow-off and blow-up portion 4 is flat and bent so as to guide the wind upward or downward. An eaves awning prevention device, which is formed to have a curved shape or a curved shape. 2. The snow canopy preventing device according to claim 1, wherein the slit-shaped gap portion is configured to be adjustable in expansion and contraction. 3. A vertical blow-off part which is vertically connected directly above the blow-off part 4 with a slit-like gap.
13 is formed, and the surface on the windward side of the vertical blow-off part 13 is formed in a flat shape, a bent shape, or a curved shape so as to guide the wind to the gap side. Item 1. A snow canopy prevention device according to Item 1 or 2. 4. A horizontal upper blow-off part 4'is continuously arranged at a position directly above the vertical blow-off part 13, and the windward side surface of the upper blow-off part 4'is a wind. 4. The snow canopy prevention device according to claim 3, wherein the device is formed in a flat shape, a refraction shape, or a curved shape so as to guide the upper part or the lower part. 5. Parapets in buildings, umbrellas, protective walls in elevated railways and elevated roads, works (advertising towers, signs,
(3) Each upper edge portion of a traffic light, etc., a tunnel entrance / exit, a snow shelter, a snow shed, a cliff upper edge portion, and the like.
The blow-off blow-up part 4 located above the blow-off blow-up part 4 continuously provided at a position directly above the blow-off blow-up part 4 and directly above the blow-off blow-up part 4 via a slit-like gap. It is composed of a vertical blow-off blower portion 13 located above, and an inclined surface for guiding the wind upward with respect to the windward side is formed on the upper end surface of the blow-up portion 3 and the blow-off portion is provided. The windward surface of the blow-up portion 4 is formed in a flat shape, a refraction shape, or a curved shape so as to guide the wind upward or downward, and the windward surface of the vertical blow-off portion 13 is a windward surface. A device for preventing snow canopy, which is formed in a flat shape, a bent shape, or a curved shape so as to guide the inside. 6. The snow canopy preventing device according to claim 5, wherein the slit-shaped gap portion is configured to be adjustable in expansion and contraction. 7. A horizontal upper blow-off part 4'is continuously provided at a position directly above the vertical blow-off part 13, and the windward side surface of the upper blow-off part 4'is a wind. 7. The snow canopy prevention device according to claim 5 or 6, wherein the device is formed in a flat shape, a refraction shape, or a curved shape so as to guide the snowflakes upward or downward. 8. A parapet in a building, a tree, a protective wall in an elevated railroad or an elevated road, each upper edge of a work (advertising tower, signboard, traffic signal, etc.), tunnel entrance, snow shelter, snow shed, cliff A blow-up portion 3 located directly on the upper edge portion and located below, and a vertical blow-off portion vertically connected directly above the blow-up portion 3 through a plurality of slit-shaped gaps. 13 is formed, and an inclined surface that guides the wind upward with respect to the windward side is formed on the windward side 3, and the windward side surface of the vertical blow-off blower 13 has a windward side. A snow canopy prevention device, which is formed in a flat shape, a bent shape, or a curved shape so as to be guided to the gap portion.