JPH02266073A - Cornice and roll sagging preventing device - Google Patents

Abstract

PURPOSE:To prevent the occurrence of an accident due to a cornice by a method wherein the occurrence of a cornice or roll sagging is detected to exert heat energy, e. g. heat generated by a power, or hot water, hot air, and a solar heat. CONSTITUTION:When the occurrence of a cornice or roll sagging 2 is detected by a sensor, a detecting signal is outputted to a cornice and roll sagging preventing device. Hot water or hot air is injected toward the cornice or roll sagging 12 through the injection nozzle of a piping 5 of the preventing device to cut it.

Description

[Detailed Description of the Invention] Conventionally, in snowy countries located in heavy snowfall areas and particularly heavy snowfall areas,
Various accidents have occurred due to snow eaves or snow build-up at the edges of buildings. In particular, there have been reports of people losing their lives due to slipping and falling during removal work.

In addition, damage to window glass, etc. may occur due to sagging. The present invention is a device aimed at preventing these accidents. As shown in Figure 1, snow eaves or sagging occurs in buildings with various cross sections. Where this occurs, a triangular prism with a triangular cross section as shown in Figure 2 is placed at the end of the building. The snow sensor shown in FIG. 2 consists of a light emitting element and a light receiving element, and a parapet mirror is placed behind these elements to increase the light emitting and light receiving ability. The light emitted from the light emitting part (laser light, infrared light, ultraviolet light, etc. or ultrasonic waves, ultrashort waves, etc. can also be used) hits the snow in the rolling part 2 and is diffusely reflected and reaches the light receiving element. In this case as well, the parapet surface mirror increases the capability of the element portion as described above. The output from the light receiving element is amplified by an amplifier circuit, and power is supplied to heater wire 3 to heat it. As a result, the snow layer in contact with the tip 5 is heated and its shear strength is reduced. As a result, it naturally sag due to gravity, leading to cutting. The electric circuit operates in the same way when snow eaves and winding sag occur, and when there is no winding, the electric circuit stops supplying electricity.Snow eaves,
Considering the effective use of the electric power of the winding droop cutting device I, as shown in FIG. 6, the heating energy is provided by an electric circuit that operates only in the area and time when the winding droop is occurring. In regions with heavy snowfall, there is a large amount of snowfall per unit time and a large amount of snowfall per unit time. Therefore, unless the cutting capacity is large, the sag will straddle the cutting device and create a cavity. Therefore, in this case, the curl remains uncut.

In such a case, as shown in FIG. 4, hot water or hot air is injected from the outlet 6 in the pipe 5 to rapidly provide thermal energy deep into the snow layer. As a result, the snow layer is heated, its shear strength is reduced, and the curls below the tip hang down due to gravity and are cut and struck by lightning. When installing the cutting device, place it in a location where the hanging blade will always work due to the weight of the roll.

Figure 13: Buildings with various cross-sections and the occurrence of sag Figure 2 Cross-section of the sag prevention device and sag in the winding Figure 3 Structure diagram of the 1F device during the period when sag occurs Figure 4. Cross-section of the injection type winding droop prevention device and appearance of winding droop 5. Structural diagram of injection type droop prevention device Figure 6. Heating power line wiring circuit 1, sag prevention device 2 Snow accumulation 3, sag
4. Power heater wire 5, winding sensor 6. Power supply unit 7 for sensor, mount for snow melting water flow 8. Radiation medium 9 for detecting infrared rays, etc., radiation mirror
10 Snow slip prevention fittings for convex roofs d

Claims (1)

[Claims] A structure that detects the occurrence of snow eaves or droop that forms due to snow accumulation on buildings in snowy regions, and applies heat from electricity or thermal energy such as hot water, warm air, and solar heat to reduce the shear strength of the snow layer and cut it. A device characterized by having: