JP3340390B2 - Anti-slip agent for frozen road surface - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for spraying a frozen road surface anti-slip agent on a road surface.

[0002]

Conventionally, in an area with a large amount of snowfall, an anti-freezing agent or an anti-slip agent has been used in order to secure the traffic safety of vehicles on a frozen road surface in winter.
In general, natural sand, crushed stone and the like are used as the anti-slip agent. However, even if this anti-slip agent such as natural sand or crushed stone is sprayed on a frozen road surface, the anti-slip agent is scattered from the road surface by passing vehicles,
There is a problem that the anti-slip effect cannot be maintained for a long time. For example, in many cases, the anti-slip agent sprayed on the road surface is scattered at about 100 vehicles and the effect is lost in about 1 to 2 hours. For this reason, there is an inconvenience that the number of times the anti-slip agent is used and the amount of application are increased in order to ensure traffic safety.

[0003] In view of the circumstances described above, an object of the present invention is to improve the fixability of a non-slip agent sprayed on a frozen road surface and to maintain the anti-slip effect for a long time.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and comprises a hopper into which a frozen road surface anti-slip agent is charged and a frozen road surface anti-slip agent sent from the hopper at about 100 ° C. A heating means for heating to a temperature in the range of from about 300 ° C. to about 300 ° C .; and a spraying means for spraying the frozen anti-slip agent heated by the heating means in a diffusion state toward the road surface. An object of the present invention is to solve the above problem by providing a spraying device.

According to the present invention, the frozen road surface anti-slip agent can be heated to a temperature in the range of about 100 ° C. to about 300 ° C. and sprayed on the frozen road surface. And, in this heated frozen road surface anti-slip agent, due to the size of the particles of the frozen road surface anti-slip agent, large particles have a large heat capacity, small particles have a small heat capacity, and the heated particles have a large heat capacity. A difference occurs in heat capacity. When the particles of the frozen road surface anti-slip agent having different heat capacities are sprayed on the frozen road surface, the surface of the frozen road surface is melted and fixed. At this time, irregular irregularities are formed on the surface to be thawed, and the anti-slip effect is caused by the anti-slip effect of the frozen road surface anti-slip agent itself and the uneven frozen surface formed by the frozen road surface anti-slip agent. Will be maintained and improved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the embodiments shown in FIGS. In the drawing, reference numeral 1 denotes a device for spraying a frozen road surface anti-slip agent installed on a bed of a vehicle such as a truck. The device 1 includes a hopper 2, a heating means 3, and a spraying means 4. The hopper 2 is supported by a pair of front and rear pedestals 6a and 6b raised from the base plate 5, and the upper surface side is opened as an inlet 7 for a frozen road surface anti-slip agent, and the lower surface side is opened as a delivery port 8 to form a cross section. It has an upward opening shape. The hopper 2 is charged with a frozen road surface anti-slip agent made of natural sand, crushed stone or the like. A supply unit 11 in which a spiral plate 10 is rotatably arranged inside a horizontal pipe 9 connected to the outlet 8 is provided at the outlet 8 of the hopper 2.
The spiral plate 10 is rotated by the first power source 12 connected to the spiral plate 10 so that the frozen road surface non-slip agent put into the hopper 2 is sent out in one direction.

The heating means 3 into which the frozen road surface anti-slip agent is fed from the hopper 2 via the supply section 11 is disposed in front of the supply section 11 in the feeding direction. The heating means 3 includes a heating cylinder 13 which is located at a lower portion of the hopper 2 and into which the tip of the supply unit 11 in the feeding direction is inserted, a burner 14 attached to the tip of the supply unit 11, and a second power source 15. Have been. The heating cylinder 13 is inclined obliquely upward from the supply unit side, and an end opposite to the supply unit side is rotatably supported by one of the pedestals 6b. Then, the power from the second power source 15 disposed on the gantry 6b side is transmitted via a transmission member 16 such as a belt, so that the heating cylinder 13 rotates. In addition, on the inner peripheral surface of the heating cylinder 13, the frozen road surface anti-slip agent sent from the supply unit 11 is fed further forward from the supply direction of the supply unit 11 along the inclination of the heating cylinder. , A spiral guide plate 17 is attached,
The frozen road surface anti-slip agent is provided so as to be fed up toward the upper end of the heating cylinder by the rotation of the heating cylinder 13 and guided by the guide plate 17.

As described above, the burner 14 is disposed inside the heating cylinder 13, and the frozen road surface anti-slip agent is sent while receiving the heat of combustion from the burner 14 and the radiation heat of the heating cylinder itself. When the frozen road surface anti-slip agent heated to a predetermined temperature reaches the outlet 18 opened at the upper end side of the heating cylinder 13, the heating cylinder is positioned when the outlet 18 is located on the lower side by the rotation of the heating cylinder 13. The anti-slipping agent for frozen road surface heated from 13 is discharged. Reference numeral 19 denotes a fuel container, which sends fuel from the fuel container 19 to the burner 14. The frozen road surface anti-slip agent is heated so that the temperature rises between about 100 ° C and about 300 ° C. By controlling the burner according to the amount of the frozen road surface anti-slip agent passing through the heating cylinder, the frozen road surface anti-slip agent is heated. The temperature of the stopper is set.

The spraying means 4 is disposed so as to receive the frozen road surface anti-slip agent which falls from the discharge port 18 of the heating cylinder 13 in the heating means 3. And a spraying mechanism 21.
As shown in the drawing, the guide nozzle 20 opens downward in a flared shape, and guides the frozen road surface anti-slip agent that has entered from the upper opening 22 so as to spread in one direction by a guide plate 23 located inside, Further, the frozen road surface anti-slip agent that falls from the lower opening 24 of the guide nozzle 20 is turned on the road surface by the rotation of the spraying mechanism 21 that is disposed opposite to the lower opening 24 and that is provided with a plurality of spraying blades 25 on the rotating shaft 26. Spray towards. A drive source for rotating the spraying mechanism is not shown. The application of the frozen road surface anti-slip agent is performed while the vehicle equipped with the frozen road surface anti-slip agent spray device 1 travels. In addition, as an example of a device for spraying a frozen road surface anti-slip agent, a device mounted on a truck bed has been described, but a type that can be towed may be used.

As described above, the apparatus for spraying the frozen road surface anti-slip agent 1
Is provided to spray the heated non-slip anti-slip agent toward the frozen road surface.The anti-slip non-slip agent is made of natural sand, crushed stone, etc. Therefore, as described above, when the surface of the frozen road surface to which the frozen road surface anti-slip agent is applied is melted while the vehicle equipped with the device 1 is traveling, the surface is formed to have irregular irregularities. become. Therefore, since the surface to be melted is uneven, the anti-slip effect is improved,
The high anti-slip effect is maintained by the anti-slip effect of the anti-slip agent itself due to the good fixation of the anti-skid anti-slip agent. The spray amount of the frozen road surface anti-slip agent is adjusted by adjusting the number of revolutions of the spiral plate in the supply unit and controlling the amount of the anti-slip agent fed to the heating cylinder. In addition, a change in the amount of application per unit time due to a change in traveling of the present application device on a frozen road surface may be dealt with by adjusting the amount of feeding to the heating cylinder. Further, the temperature of the frozen road surface anti-slip agent is adjusted by controlling the combustion of the burner as described above, and the adjustment is easy.

[0011] The case where the frozen road surface anti-skid agent is sprayed on the frozen road surface using the frozen road surface anti-skid agent spraying device, and the case where the frozen road surface anti-skid agent spraying device is not used, that is, without heating. The coefficient of sliding friction on the frozen road surface when the anti-slip agent on the frozen road surface was sprayed was measured. Table 1 shows the results. Sand (silica sand) was used as a frozen road surface anti-slip agent. In addition, the frozen road surface slip agent sprayed by the frozen road surface slip agent spray device was heated to 100 ° C. ± 20 ° C. and sprayed. The temperature measurement in the table below is performed on the frozen road surface.

[0012]

[Table 1]

The coefficient of sliding friction on a frozen road surface is 0.1 to 0.2, the coefficient of sliding friction on a road surface in a compacted snow condition is 0.2 to 0.3, and the slipping effect is recognized as a slipping effect. The coefficient of friction is a value larger than 0.3. As can be seen from the measurement results in Table 1, when the frozen road surface non-slip agent was sprayed without heating, the sliding friction coefficient was 0.32 at the elapsed spraying time of 1 hour, but slipping occurred after the spraying elapsed time of 2 hours. The coefficient of friction fell below 0.3. On the other hand, when the frozen road surface anti-skid agent was sprayed using the frozen road surface anti-skid agent spraying device, it was recognized that the high anti-slip effect was maintained for a long time.

The spray density on the frozen road surface when the frozen road surface anti-slip agent is sprayed using the present frozen road surface anti-skid agent spraying apparatus 1 is not particularly limited, but the spray density on the frozen road surface is almost constant in the width direction of the road. It may be sprayed so as to be constant, or in the width direction of the road, in such a manner that the spray density is increased at a place where the degree of contact of the vehicle tire is high. In order to adjust the spray density to be uniform or to selectively increase the spray density at a specific position, it is possible to cope with such a method as changing the position or inclination of the guide plate. Further, the application density of the frozen road surface anti-slip agent may be changed according to the road condition as well as being uniformly applied in the road direction. For example, the spray density may be increased to a location where the vehicle must appropriately apply braking, such as a road surface in front of an intersection.
Then, a system for automatically spraying the frozen road surface anti-slip agent while moving the frozen road surface anti-slip device is configured, and the spraying system is arranged at a preset location (such as a place just before the intersection described above). A configuration may be added in which spraying is performed so that the spray density of the frozen road surface anti-slip agent automatically changes when approaching.

[0015]

As described above, according to the apparatus for spraying a frozen road surface slip agent of the present invention, the hopper into which the frozen road surface slip agent is introduced, and the frozen road surface slip agent sent out from the hopper, are approximately It is characterized by comprising heating means for heating in the range of 100 ° C. to about 300 ° C., and dispersing means for dispersing the frozen road surface anti-slip agent heated by the heating means in a diffusion state toward the road surface. The frozen road surface non-slip agent can be heated in a range of about 100 ° C. to about 300 ° C. and sprayed on the frozen road surface, and the frozen road surface non-slip agent heated to a high temperature can be easily applied without human intervention, And it can be sprayed safely. Then, by spraying a high-temperature anti-skid anti-slip agent on the icy road, the surface of the icy road is formed into irregular irregularities, the anti-skid effect of the road itself is improved, and the anti-skid anti-slip The fixing property of the agent is improved, the anti-slip effect of the frozen road surface anti-slip agent itself and the good fixation of the frozen road surface anti-slip agent, such that a high anti-slip effect can be maintained for a long time, This is an effect that is excellent in practicality.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a side view of an embodiment of a frozen road surface anti-slip agent spraying apparatus according to the present invention when viewed from a side.

FIG. 2 is an explanatory view showing the same embodiment when viewed from a spraying means side.

[Explanation of symbols]

1 ... spraying device for frozen road surface anti-slip agent 2 ... hopper 3 ...
Heating means 4 Spraying means 11 Supply unit 13 Heating tube 14 Burner 18 Discharge port 20 Induction nozzle
21: spraying mechanism 25: spraying blade 26: rotating shaft

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E01H 10/00

Claims (1)

(57) [Claims] 1. A hopper into which a frozen road surface anti-slip agent is charged, heating means for heating the frozen road surface anti-slip agent sent from the hopper to a temperature in the range of about 100 ° C. to about 300 ° C., and heating by the heating means Spraying means for spreading the frozen road surface anti-slip agent in a diffusion state and spraying the anti-slip agent in the road surface direction.