JPH0452357Y2 - - Google Patents

Description

[Detailed explanation of the invention] Industrial application field This invention relates to a device that automatically removes snow that has fallen on the roof of buildings such as houses, school buildings, factories, livestock sheds, and warehouses, and prevents snow from accumulating on the roof. It is.

Conventional technology and its problems In areas with heavy snowfall, in order to prevent buildings from collapsing due to the weight of snow that constantly falls on the roof, it is necessary to constantly climb on the roof and scrape off the snow, or use water sprinkling or other methods. It is necessary to remove snow and the cost is enormous, but accidents involving personal injury caused by the removal work are a particular problem.

As a means to automatically remove snow that has fallen on the roof surface without requiring human intervention, for example, in Utility Model Application Publication No. 56-71822, a certain space is provided above the roof surface and a net is placed parallel to the roof surface. A method has been disclosed that uses solar heat from above and heat from the air passing through the space to promote snow melting, but this method cannot be used as a solution if snow continues to fall without sunlight. do not have.

Means for Solving the Problems This invention solves the above problems and can be easily installed on the roof surface, without the need to climb the roof to remove snow. It has been discovered that snow can be prevented from accumulating on the roof by extending it over the roof surface, and it has been possible to provide a device that can reliably prevent snow from accumulating on the roof, regardless of the weather or other external conditions. Here, it is necessary that the angle of inclination of the net or rope is greater than the angle of repose of the snow cover.

Embodiment 1 As shown in FIG. 1, a support rod 2 is held above the ridge line 1 of the roof, and a support rod 4 is held near the eave line 3 of the roof using appropriate supports 5 and 6, and both support rods are This is a roof snow prevention device in which a mesh 7 made of polyethylene having excellent weather resistance and preferably having a diameter of about 0.2 to 6 mm and a mesh size of about 0.5 to 50 mm is stretched between 2 and 4. The angle at which the net is stretched is about 50° with respect to the horizontal plane.

Embodiment 2 FIG. 2 shows a rope or tape support 8 which holds support rods 2 and 4 in the same way as in FIG. Attach them at approximately equal intervals, for example, at intervals of 10 to 100 mm, and attach ropes, for example, with a diameter of 0.5 mm, to the hook pieces 8a, 8a.
This is a roof snow prevention device made by hooking and stretching a polyethylene rope or tape 9 with a thickness of about 10 mm. The angle at which the rope or tape is stretched is approximately 50° with respect to the horizontal plane. In this case, a large number of ropes or tapes 9 may be stretched one by one between the upper support rod 2 and the lower support rod 4, or one long rope or tape 9 may be stretched in a meandering manner. Good too.

In Examples 1 and 2 above, the case where the roof surface is sloped has been explained, but the same applies to the case where the roof surface is horizontal as shown in FIG. 4 or the case of a two-tiered roof as shown in FIG. warehouse, factory,
In cases where the roof surface is extremely wide, such as in a school building, if the roof surface is divided into several blocks and the proposed roof snow prevention device is installed in each block, the function will be fully demonstrated even if there are some gaps between the snow prevention devices. Moreover, the net 7, rope or tape 9 can be stretched not only in an inclined plane as shown in the figure, but also in a pyramidal or conical shape depending on the shape of the roof.

In either case, it is preferable to adjust the inclination angle of the net, rope, or tape as appropriate depending on the nature of the snow, the condition of the surface of the net, rope, or tape, and the material. It is sufficient to have an inclination of about 50° to the angle, and there is no point in increasing the inclination angle too much.

Function of the device As described above, in this device, a net, rope, or tape is stretched on the roof surface with an angle of inclination slightly larger than the angle of repose of the snow, so that when it snows, several tens of centimeters of snow accumulates on the net, rope, or tape. The snow automatically slides down when the sides of the snow exceed the angle of repose of the snow, and no human effort or power is required to prevent snow from accumulating.

Effects of the invention Since the roof snow prevention device of the present invention is constructed as described above, the upper surface of the net, rope or tape can be
When snow accumulates, the snow automatically slides down without any external force applied, ensuring that buildings are prevented from collapsing due to snow accumulation, and there is no need to climb onto the roof to remove snow, reducing roof damage and personal injury. Since it does not use a sheet, there is no risk of it being blown away by strong winds, and it can also be used as a cushioning material to prevent damage to the roof from tiles and other objects blown from other places. .

[Brief explanation of the drawing]

Figures 1 and 2 are perspective explanatory views showing an embodiment of the present invention, and Figure 3 shows a hook piece 8 on the support rod in Figure 2.
An enlarged cross-sectional view of the main parts showing a state in which the rope or tape support 8 with the hook pieces 8a and 8a is attached and the rope or tape 9 is stretched over the hook pieces 8a and 8a,
FIGS. 4 and 5 are side views showing other embodiments of the present invention. In the figure, 2 and 4 are support rods, 5 and 6 are supports, and 7 is a net.

Claims (1)

[Scope of utility model registration request] This roof snow prevention device comprises a net or rope stretched over the roof surface with an angle of inclination slightly larger than the angle of repose of the snow, and snow accumulated on the top surface of the net or rope automatically slides down.