JP3673701B2 - Road surface freezing prevention method that discharges antifreezing liquid to the road surface - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a road surface freezing prevention method for discharging antifreezing liquid onto a road surface in which antifreezing liquid is discharged from a discharge nozzle in order to prevent freezing of a vehicle traveling road surface in a snowy area or a cold area.
[0002]
[Prior art]
Conventionally, as a method for preventing freezing of the road surface B by discharging antifreezing liquid from the discharge nozzle embedded in the paved body A and spraying it on the road surface B, for example, JP-A-10-272386, A technique described in Japanese Patent No. 2920493 is known. According to the conventional method, as shown in FIG. 5, the discharge nozzles 51, 51,... Are arranged in the nozzle support pipe 52 and arranged in a direction crossing the road with the upper end side protruding from the road surface B. To do. Then, by supplying the antifreezing liquid from the antifreezing liquid supply device 53 to the discharge nozzles 51 and spraying the antifreezing liquid, the antifreezing liquid adheres to the tires of the vehicle traveling on the road surface B, and spreads and spreads. This is a mechanism that prevents freezing of the road surface B along the road crossing direction. Therefore, in order to make the antifreezing liquid adhere to the tires most efficiently, each discharge nozzle 51 is generally embedded in the traveling zone C where the left and right tires of the vehicle pass, that is, the position of the eaves.
[0003]
[Problems to be solved by the invention]
However, when the discharge nozzle 51 is embedded at the position of the travel zone C, the discharge nozzle 51 is naturally in a state of being stepped on the tire of the passing vehicle, and by receiving a vehicle load or a hit by a tire chain, Furthermore, there is a drawback that a heavy machine such as a tire excavator or a grader is damaged or broken due to being scratched by a snow plate or the like when removing snow.
[0004]
In addition, when the pavement is damaged due to dredging, etc. caused by flow, polishing slip, etc. of the road surface B with the passage of time, repair of the pavement is necessary with asphalt mixture or concrete. It is common to perform rail pavement for overlaying or overlay pavement that covers the entire road with asphalt mixture. At this time, the discharge nozzles 51, 51,... Are dismantled once and removed, and after the repair of the pavement is completed, each discharge nozzle 51 must be newly installed, which is wasteful in terms of work and cost. In addition, there is a drawback in that traffic is hindered because the passage of vehicles must be restricted during the construction.
[0005]
The present invention has been made in view of the above-mentioned drawbacks of the prior art, and is not damaged by the load of a vehicle, a tire chain, or a snow plate of a heavy machine, so that the service life of the discharge nozzle can be extended. However, even when repairing the ridge part of the paved road surface, it is not necessary to remove the discharge nozzle, so that repair work can be performed in a short period of time and the cost for that can be reduced. It aims at providing the road surface freezing prevention method which discharges a liquid.
[0006]
[Means for Solving the Problems]
The means of the present invention configured to solve the above-described problem prevents freezing of the road surface by discharging antifreezing liquid from a discharge nozzle embedded in the pavement with the upper end protruding from the road surface. In the road surface freezing prevention method, the discharge nozzle is located outside the travel band of the vehicle traveling on the road surface and is embedded in the pavement, and the nozzle hole is obliquely above the road surface and the vehicle travels. It consists of what was arrange | positioned in the state toward the zone | band .
[0007]
The discharge nozzle is attached to a nozzle arrangement pipe embedded in the pavement, and an inner liquid passage is composed of a nozzle mounting member communicating with the nozzle arrangement pipe, and a hollow pipe whose upper end is closed, The nozzle body may be composed of a nozzle body having a side attached to the nozzle mounting member, and a nozzle hole that is located on the upper end side of the nozzle body and is formed to open obliquely upward.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, the discharge nozzle used in the present embodiment will be described. In the figure, reference numeral 1 denotes a discharge nozzle for discharging a chloride-based or non-chloride-based antifreezing liquid. Reference numeral 2 denotes a nozzle mounting member that constitutes the discharge nozzle 1 and is attached to a nozzle arrangement tube 11 to be described later. The nozzle mounting member 2 has a male screw portion 2A on one side in the axial direction and the other side in the axial direction. The shaft is formed with a hexagonal torque hooking portion 2B, and the inside is screwed with a large diameter nut coaxially with the liquid passage 2D on one side in the axial direction and the other side through the step portion 2C. A hole 2E is formed.
[0009]
Reference numeral 3 denotes a nozzle body. The nozzle body 3 is a hollow tube having a lower end 3A opened, an upper end 3B closed and a discharge passage 3C formed therein, and has heat resistance capable of withstanding the melting temperature of the asphalt mixture. It is formed of a material having elasticity that does not sag even when repeatedly bent, such as high-tensile elastic rubber. Reference numeral 4 denotes a nozzle hole formed on the upper end 3B side of the nozzle body 3 so as to communicate with the discharge passage 3C. The nozzle hole 4 is opened obliquely upward at an inclination angle of about 30 degrees.
[0010]
Reference numeral 5 denotes a mounting nut for fastening the nozzle body 3 to the nozzle mounting member 2. The mounting nut 5 has a male screw portion 5A that is screwed into the nut screwing hole 2E on one side in the axial direction, and a hexagonal shape on the other side. It is a torque application portion 5B, and a nozzle insertion hole 5C is formed at the center.
[0011]
Reference numeral 6 denotes a locking ring for preventing the nozzle body 3 from coming off. The locking ring 6 is located between the nut 5 and the nozzle mounting member 2 and is fitted to the outer periphery of the nozzle body 3 and is formed in a substantially arc shape in cross section so that it can be easily engaged with the outer surface of the nozzle body 3. It is. 7 shows a metal receiving tube inserted from the lower end side of the nozzle body 3 corresponding to the position of the locking ring 6, and the receiving tube 7 projects from the cylindrical portion 7A and the lower end of the cylindrical portion 7A. It consists of a washer portion 7B and is for receiving the tightening force of the locking ring 6.
[0012]
On the other hand, 11 indicates a nozzle arrangement pipe for arranging the discharge nozzle 1 having the above-described configuration at a predetermined position on the road. Reference numeral 12 denotes a tube main body comprising the nozzle-arranged pipe 11 and made of a steel pipe having a liquid supply passage 12A inside. The pipe main body 12 is provided with a plurality of mounting screw holes 12B in the radial direction and spaced apart in the axial direction. It is set up. Reference numeral 13 denotes a pipe stabilizer for stably installing the pipe main body 12 in the embedding groove A formed in the asphalt pavement A. The pipe stabilizer 13 is made of a horizontally long rectangular metal plate. 12 is fixed to the lower surface side by welding means. Reference numeral 14 designates a sheath pipe projecting from the pipe body 12 by welding or other fixing means concentrically with the mounting screw hole 12B. A female screw 14A is engraved on the inner peripheral surface of the sheath tube 14 to prevent foreign matter from entering when the nozzle is installed, and a plug (not shown) used for curing can be attached and detached. It is designed to be screwed on. Reference numeral 15 denotes a sealing portion formed between the discharge nozzle 1 whose position and direction are determined and the sheath tube 14, and the sealing portion 15 is made of a silicon-based sealing agent.
[0013]
Reference numeral 16 denotes an antifreezing liquid supply device for supplying antifreezing liquid to each discharge nozzle 1, and the antifreezing liquid supply device 16 is connected to a liquid storage tank 17 for storing the antifreezing liquid and the liquid storage tank 17. A discharge pump 18, a controller 19 that controls the operation of the discharge pump 18, a sensor 20 that detects the outside air temperature and the presence or absence of snow and sends a signal to the controller 19, and the discharge pump 18 is connected to the nozzle arrangement pipe 11. And a connecting pipe 21 to be connected.
[0014]
Next, the road surface freezing prevention method using the discharge nozzles 1, 1,. In the figure, reference numeral 31 denotes a roadway on which a road surface antifreezing liquid is sprayed. The roadway 31 has an upward lane 33 and a downward lane 34 defined by a width of about 300 cm on both sides centering on the roadway centerline 32. Walkway boundary curbs 37 and 37 (only one is shown) are arranged in a row with road shoulders 36 and 36 on the outside from the outermost lines 35 and 35 of the vehicle lanes outside the lanes 33 and 34. Therefore, the pavement A is excavated in the transverse direction of the roadway 31 from the pedestrian boundary curb 37 on one side to form a buried groove a, and the nozzle arrangement pipe 11 is installed in the buried groove a. In the nozzle arrangement pipe 11, one mounting screw hole 12B,... Is drilled in advance at a position intersecting with the outermost line 35 of each vehicle traffic zone and at a position intersecting with the road center line 32. deep.
[0015]
Thus, the discharge nozzles 1, 1,... Installed in the respective mounting screw holes 12B of the nozzle arrangement pipe 11 are the traveling band C of the upward lane 33 with the upper end side 3B of the nozzle body 3 protruding from the road surface B, And on the outer side of the traveling band C of the downward lane 34. Further, the nozzle holes 4 of the respective discharge nozzles 1 are set so as to face in a diagonal direction toward the traveling zone C of the vehicle and in a downward slope of the road surface B. Thereby, as shown in FIG. 4, the antifreezing liquid can be discharged from the discharge nozzle 1 toward the traveling zones C and C of the vehicle. 1 and 4, since both the upward and downward lanes 33 and 34 are downward slopes from the embedding groove a, each discharge nozzle 1 is installed with the nozzle holes 4 oriented in the same direction. It is.
[0016]
In the present embodiment, it has been described that one discharge nozzle 1 is installed at a position intersecting with the vehicle outermost line 35 and two at each position intersecting the roadway center line 32. 32 and 35 are indications of arrangement and are not limited to this position, but may be outside the travel band C of each travel lane.
[0017]
In addition, when the roadway 31 has two or more lanes on one side, the discharge nozzle 1 may be installed with reference to the position intersecting the roadway center line 32, the vehicle lane border, and the vehicle lane outermost line 35.
[0018]
【The invention's effect】
Since the present invention is configured as described in detail above, the following effects can be obtained.
(1) By disposing the discharge nozzle outside the traveling band of the vehicle traveling on the road surface and burying it in the pavement, the discharge nozzle may be damaged by the load of the vehicle, the snow chains of the tire chains or heavy machinery. Since this is not done, the service life of the discharge nozzle can be extended.
(2) For the same reason as 1 above, even when repairing the ridge portion of the road surface, it is not necessary to remove the discharge nozzle, so that the repair work can be performed in a short period of time and the cost for that can be reduced. .
(3) The discharge nozzle is formed in a state in which the antifreezing liquid is diffused widely by forming a nozzle hole obliquely upward and disposing the nozzle hole in the direction of the down slope in the direction of the traveling zone of the vehicle. As a result, the effect of preventing freezing of the road surface can be obtained in a wider range.
(4) Since the nozzle body constituting the discharge nozzle is formed in a hollow tube whose upper end is closed and the nozzle hole is formed on the upper end side of the nozzle body so as to open obliquely upward, The problem of clogging with dust like a nozzle hole can be eliminated, and the upper end side of the nozzle body has a closed shape, so it has high strength against external force and is excellent in durability.
[Brief description of the drawings]
1 to 4 are schematic explanatory views of a road surface freezing prevention method for discharging an antifreezing liquid onto a road surface according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing an embedding state of a discharge nozzle used in a road surface freezing prevention method.
FIG. 3 is a longitudinal sectional view of a discharge nozzle.
FIG. 4 is an explanatory view showing a state in which antifreezing liquid is sprayed from the discharge nozzle to the road surface.
FIG. 5 is a schematic explanatory view of a road surface freezing prevention method for discharging an antifreezing liquid onto a road surface according to the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Discharge nozzle 2 Nozzle attachment member 3 Nozzle main body 4 Nozzle hole 11 Nozzle arrangement pipe | tube B Road surface C Traveling zone

Claims (2)

In the road surface freezing prevention method for preventing freezing of the road surface by discharging antifreezing liquid from a discharge nozzle embedded in the pavement with the upper end protruding from the road surface, the discharge nozzle is a vehicle that runs on the road surface. Freezing on the road surface, characterized in that it is embedded in the pavement located outside the travel zone of the vehicle, and the nozzle hole is disposed obliquely above the road surface and facing the travel zone of the vehicle. Road surface freezing prevention method that discharges prevention liquid.   The discharge nozzle is attached to a nozzle arrangement pipe embedded in the pavement, and an internal liquid passage is composed of a nozzle mounting member communicating with the nozzle arrangement pipe and a hollow pipe whose upper end is closed, and a lower end side of the discharge nozzle. 2. The road surface according to claim 1, further comprising: a nozzle body attached to the nozzle mounting member; and a nozzle hole which is located at an upper end side of the nozzle body and is formed to open obliquely upward. Road surface freezing prevention method that discharges liquid.

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