JPH111914A - Snow-melting block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate water spraying nozzles by providing a water discharge portion having water permeable material, water flowing pipe and regulating valve in a predetermined state in a long concrete block. SOLUTION: A water flowing pipe 2 and a regulating valve portion 3 are embedded in the main body 1 of a long rod-shaped block, and a water discharge portion 12 comprising a slender band-shaped water permeable concrete in longitudinal direction at the top of the main body 1 thereby constituting a snow melting block A. A pipe 2 is connectable by means of a projected coupling pipe 22 and a socket portion 23 provided at the end portions of each pipe main body 21, and a valve 3 is placed between the bottom portion of the water discharge portion 12 and the main body 21 of pipe. Next, the block A is laid on a road surface and snow melting water is supplied to the pipe 2 during snow melting. Then, the valve 3 is activated, the degree of valve opening is made smaller in the upstream portion where water pressure is high and thus a drop in water pressure must be restricted to a proper level, and the valve is opened more in a downstream portion where water pressure is lower thereby making almost the same rate of water discharge both at the upstream and downstream. Also, the water discharge portion 12 has a wide area and thus no clogging occurs. By doing this, the clogging at the water spraying holes in the block using the conventional water spray nozzles can be now fully eliminated in the present snow melting block.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snow removal block installed on a road to melt snow on a road surface by spraying water.

[0002]

2. Description of the Related Art Generally, a snow-melting road that melts snow on a road surface by water sprinkling has a groove formed at the center of the road, a water supply pipe disposed at the bottom of the groove, and a water sprinkling nozzle connected to the water supply pipe at appropriate intervals. The concrete is placed in the groove so that the water spout (upper surface portion) of the water sprinkling nozzle is exposed on the road surface. However, since the above-mentioned construction deteriorates traffic conditions on the road, in order to shorten the construction period, a snow-melting block in which a water pipe serving as a water supply pipe buried in the trench and a watering nozzle are integrated with concrete or the like is prepared in advance. In addition, it is known that the blocks are buried in trenches dug in the road, and the blocks are connected to form a snow-free road.
13459, JP-A-60-25831, JP-A-2-
261108).

[0003]

Each of the conventional snow removal blocks described above is designed to discharge water from watering nozzles provided at appropriate intervals, and this effectively removes snow. This is because it is necessary to spray water in an appropriate range. When such a nozzle-type watering means is employed, sand or stones are clogged in the small-diameter nozzle opening due to vehicle traffic on the road surface during a non-use period (other than the snowfall period). Therefore, during trial operation at the start of use in the winter, pressure is applied by snow water to blow off sand and stone at the nozzle opening,
Although it can be used, clogging may not always be eliminated with pressure water. For this reason, there is an inconvenience that the work for eliminating the clogging of the nozzle opening must be performed separately at the start of use.

[0004] In addition, the amount of watering is adjusted at the start of use by adjusting the opening degree of the on-off valve of each watering nozzle, but once adjusted, remains the same during the use period. For this reason, if the snow removal water pressure in the water pipe fluctuates and increases during operation,
The amount of watering increases, and wasteful snowmelt water is consumed,
In particular, when groundwater is used as snow removal water, it is better to minimize wasteful use from the viewpoint of protecting the natural environment (preventing land subsidence). The present invention proposes a new snow removal block that does not use a watering nozzle.

[0005]

A block for snow removal according to the present invention has a long concrete block body provided with a water discharge section formed of a strip-shaped water-permeable material in the longitudinal direction of the top, and a block penetrating through the block body. And a regulating valve portion embedded in the block main body and interposed between the water discharge portion and the water flow.

[0006] In the snow-absorbing block, the control valve portion is provided with a control mechanism for mechanically controlling the control valve in accordance with the pressure in the water pipe. .

Accordingly, when the snow-absorbing block body is connected to the road surface in sequence and buried, and snow-absorbing water is supplied to the water pipe, the snow-absorbing water becomes
Water is discharged from the water discharge section through the regulating valve section to melt snow on the road surface. In particular, the control valve section is equipped with a control mechanism that mechanically controls the control valve in accordance with the pressure in the water pipe, so that when the pressure increases, the control valve closes, and when the pressure decreases, the control valve opens. When the snow-melting water is supplied at a high pressure, sufficient snow-melting water is discharged even downstream of the line (the piping range of the water pipe). There is no needless water discharge.

[0008]

Next, an embodiment of the present invention will be described. The block for snow removal shown in the embodiment includes a block body 1, a water pipe 2, and a regulating valve 3.

The block body 1 is a long rod-shaped body reinforced with a reinforcing bar 11 and has the water passage pipe 2 and the regulating valve portion 3 embedded therein. It is provided with a water discharge section 12 formed of a reinforced concrete. The water discharge section 12 has a bottom portion inclined such that a connection portion with a later-described adjustment valve portion 3 is located at a low place, and the water permeability of the entire bottom portion is increased, so that sufficient water is supplied to both end portions. So as to further suppress the water permeation function at a location close to the regulating valve portion 3 and increase the water permeation function at a location away from
Ensure uniform water discharge performance as much as possible.

The water pipe 2 has a structure enabling connection with another snow-absorbing block at an end of a pipe body 21 penetrating through the inside of the block body 1, for example, one end is formed as a projecting connection pipe section 22, and the other. The end is the socket part 2 into which the protruding connecting pipe part 22 is closely inserted.
3

The regulating valve section 3 is provided between the bottom of the water discharge section 12 and the pipe main body 21 of the water pipe 2, and includes a valve chamber 33 provided between the inlet pipe 31 and the outlet pipe 32, and a valve chamber 33. A valve body 34 that opens and closes 33, a pressure operation unit 35 that controls the operation of the valve body 34, and a pressure chamber 36 that is an operation source of the pressure operation unit 35 are housed in a valve box 37. The water pipe 2 is connected with a sensor pipe 38 and buried in the block main body 1. In addition, the pressure operating section 35 only has to operate the valve body 34 in accordance with the pressure of the pressure chamber 36. Specifically, a driving piston 352 is provided inside a cylinder 351 communicating with the pressure chamber 35. And the piston 352 and the valve element 3
4 are connected by a shaft 353, and a spring 354 for biasing the cylinder 352 in the direction of the pressure chamber 35 is internally provided. Note that the valve chamber 33 is not completely closed by the valve body 34, and the required minimum water passage is secured. Further, a diaphragm may be employed instead of the cylinder piston mechanism.

In order to install the snow-absorbing block A on a road surface, a groove B is dug at a predetermined position on the road surface (usually near the center line), and crushed stone C or the like is laid in the groove. If it is flat, the blocks A for snow removal are arranged in order, and if the protruding connecting pipe 22 is tightly connected to the socket 23, the blocks A for snow removal are connected, and then the inside of the groove with sand or mortar, asphalt, concrete or the like. Is filled (filling material D), the surface of the gap is covered with asphalt, concrete, or the like, and the snow removal block A is integrated with the road surface E at the highest position on the road surface E. .

When snow-clearing water is supplied to the water pipe 2 at an appropriate pressure during snowfall, the water enters the pressure chamber 36, presses the piston 352, pushes the valve body 34 into the valve chamber 33, and pushes the valve body 33 into the valve chamber 3. Determine the waterway part. Therefore, the snow removal water a from the water pipe 2 enters the water discharge section 12 through the water inlet pipe 31, the valve chamber 33, and the water discharge pipe 32, oozes into the permeable concrete, and
The water is discharged from the upper surface portion 2 to the road surface E to realize snow removal on the road surface.

In particular, as described above, the degree of movement of the piston 352 is determined by the pressure of the snow-clearing water in the water pipe 2, whereby the regulating valve function is exerted. The opening degree is small and the reduction of the pressure of the snow removal water is suppressed, and the opening degree of the valve is increased in the downstream part where the pressure of the snow removal water is low, so that the same amount of water can be discharged both upstream and downstream.

Further, since the water discharge section 12 has a certain large area, there is no possibility that the water discharge is stopped due to clogging.

The present invention is not limited to the above-described embodiment. As shown in the schematic diagram of FIG. 5, the water discharge section 12 and the water pipe 2 are connected by the control valve section 3, and the control valve section 3 is provided. May be constituted by a valve section 3a whose opening is adjusted and a control section 3b for controlling the operation of the valve section 3a, and the control section 3b may have a structure corresponding to the pressure in the water pipe. It is.

[0017]

As described above, the present invention is a snow-absorbing block in which a water-discharge portion is formed of a water-permeable material, which solves the problem of clogging of a water spout port that a block employing a conventional water sprinkling nozzle has. It is.

[Brief description of the drawings]

FIG. 1 is a partially cut front view of an essential part of an embodiment of the present invention.

FIG. 2 is a perspective view of the same.

FIG. 3 is a sectional view of the road surface buried state.

FIG. 4 is a cross-sectional view of the adjustment valve unit.

FIG. 5 is a schematic view of an adjusting mechanism of the snow-free water.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Block main body 11 Reinforcing bar 12 Water discharge part 2 Water pipe 21 Pipe main body 22 Projecting connecting pipe part 23 Socket part 3 Adjustment valve part 31 Water inlet pipe 32 Water outlet pipe 33 Valve room 34 Valve body 35 Pressure operation part 351 Cylinder 352 Drive piston 353 Shaft 354 Spring 36 Pressure chamber 37 Valve box 38 Sensor tube

Claims (2)

[Claims] 1. A long concrete block main body having a water discharging portion formed of a strip-shaped water-permeable material in a longitudinal direction of a top portion, a water pipe having a structure penetrating the block main body and connectable at an end of the block, A block for snow removal characterized by being embedded in the block main body and comprising the water discharge section and a regulating valve section interposed between the water flow sections. 2. The snow-elimination block according to claim 1, wherein the control valve section is provided with a control mechanism for mechanically controlling the control valve in accordance with the pressure in the water pipe.