JPS6027132Y2 - snow conveyance duct - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a snow conveying duct, and more particularly to a snow conveying duct that prevents snow from adhering to the inner wall of the duct and also allows snow attached to the duct wall to be removed.

In general, to remove snow from the roadbed of railways, etc.,
The rotating blades of a snowplow were driven to scatter snow in one direction and transport it through a snow transport duct.

In this type of duct, a portion of the snow often adheres to the inner wall of the duct and then freezes.In order to prevent snow from accreting on the duct, conventional methods have been to create a duct shape with a small curvature as much as possible. I avoid it and improve the snow passage.

However, when a straight duct or a duct with a large curvature is used, although snow clogging is reduced, the device becomes long and requires a large space.

Furthermore, when the speed of snow conveyed through the duct is slow, there is a problem in that the snow lands on the curved portions and ascending and descending portions of the duct, and freezes there.

Furthermore, once snow has fallen on the pipe and it begins to freeze, the frozen mass grows at an accelerated rate, causing the inside of the duct to become blocked in a short period of time, eventually causing the pipe to lose its conveyance function.

To avoid this, the duct walls must be periodically bombarded to break up and remove the ice.

SUMMARY OF THE INVENTION An object of the present invention is to provide a snow conveying duct that can automatically remove snow and ice within the duct using a simple device.

In order to achieve the above object, the snow conveying duct according to the present invention has an elastic membrane plate attached to a part of the inner wall of the duct, an air chamber is formed between the elastic membrane plate and the duct wall, and this air chamber is compressed. It is characterized by being connected to a device that supplies air intermittently.

An embodiment of the snow conveying duct according to the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 indicates a part of a duct for conveying snow, and the duct 1 includes a suction port 1a and an outlet 1b connected to a vacuum suction source.

An elastic membrane plate 2, for example a rubber plate, which can be elastically deformed is stretched over a part of the inner wall of the duct 1, and the elastic membrane plate 2 has an elastic membrane temporary support 3 and an elastic membrane temporary It is mounted and supported by a presser foot 4 and bolts 5.

Air chambers 6a and 6b are formed between each elastic membrane plate 2 and the duct wall of the duct 1.

The lower air chamber 6b is configured to have a larger volume than the upper air chamber 6a.

Further, air vent holes 1 are provided on the outlet sides of the air chambers 6a and 6b.
4 and 14 are open.

Further, one end 7a of an air pipe 7 is connected to the side wall of the air chamber 6, the other end 7b of this air pipe 7 is connected to an air tank 8, and the air tank 8 is further connected to an air compressor 9.

A solenoid valve 10 is installed on the air pipe 7, and a timer power source 1 is connected to the input side of the solenoid valve 10.
The signal from timer 12 connected to signal line 13
The voltage is applied through the valve to open and close the valve intermittently.

Since the present invention is constructed in this manner, snow and air 15 are initially sucked and conveyed over the flat elastic membrane plate 2 in the direction of the arrow in the figure by a suction source (not shown).

When an electric signal is sent from the timer 12 to the solenoid valve 10 during transportation, the solenoid valve 10 opens and the air pipes 7a and 7b are electrically connected, so that the compressed air compressed by the air compressor 9 and stored in the air tank 8 is is sent to the air chamber 1 through the solenoid valve 10.

The air pressure causes the elastic membrane plate 2 to expand to a position 2a shown by a broken line, and snow and ice on the elastic membrane plate are destroyed by the deformation of the membrane plate and separated from the thin film.

This snow and ice is then sucked into the suction source.

On the other hand, the air forced into the air chamber 6 is transferred to the air vent hole 14.
Since the signal from the timer 10 stops, the solenoid valve 10 closes, and the air supply from the air tank 8 stops, the elastic membrane plate 2 contracts over time, and the solid line Return to the initial position shown.

Since such operations are automatically repeated intermittently based on the timer signal, it is possible to remove snow and ice that have delayed deformation of the elastic membrane plate.

As is clear from the above explanation, according to the present invention, an air chamber is formed between the elastic membrane plate installed in the middle of the duct and the duct wall, and compressed air is intermittently supplied to this air chamber. With this structure, snow and ice buildup on the elastic membrane plate can be intermittently destroyed and removed using a simple device.

Moreover, since the internal cross-sectional area of the duct becomes smaller due to the deformation of the elastic membrane plate, the airflow speed in that area increases, and the ice and snow that has separated from the membrane plate can be scattered and transported by the airflow.

In addition, since the valves of the air pipes are automatically opened and closed based on the timer signal, the effect of saving labor is significant.

Furthermore, if the ducts and air chambers are made of cold-resistant fibers or the like into a bellows shape, they can be folded into a compact size and transported to the site, so they do not require much space and can be widely used for snow removal on railways, roads, and other areas. There are advantages such as being able to

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a snow conveying duct according to the present invention. 1... Duct, 2, 2a... Elastic membrane plate, 6... Air chamber, ? a, 7b... Air pipe, Air tank, 10... Solenoid valve, 12... Timer, 14... Air relief hole .

Claims (1)

[Scope of utility model registration request] In a device that transports snow through a road in a duct, an elastic membrane plate is attached to a part of the inner wall of the duct, an air chamber is formed between the elastic membrane plate and the duct wall, and the air chamber is compressed. A lightning transport duct characterized by being connected to a device that supplies air intermittently.