JPH08218339A - Antifreezing-admixture sprinkling car - Google Patents

Abstract

PURPOSE: To scatter an antifreezing admixture in a proper quantity and prevent insufficient snow melting, and to obviate the waste of the usage of the antifreezing admixture by providing a sprinkling-quantity changing means for changing the quantity to be sprinkled from a nozzle, and a driving means for driving and controlling the sprinkling-quantity changing means in response to car speed. CONSTITUTION: A duct 10 is piped to a tank 2, and an antifreezing admixture is fed by a feed pump 13 mounted in the duct 10, and discharged and scattered towards a road surface from a plurality of nozzles 18 connected to the duct 10. When a car 1 is made to travel on the required road surface, the pump is driven and the antifreezing admixture is discharged and sprinkled from the nozzles 18, a sprinkling-quantity changing means 20 is driven and controlled in response to car speed by a control means 30. Accordingly, the quantity of sprinkling is adjusted in response to car speed. That is, a small quantity is scattered at the time of low speed, and a large quantity is scattered at the time of high speed, thus controlling the antifreezing admixture so that sprinkling density is kept constant.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-freezing agent spraying vehicle for spraying a liquid anti-freezing agent from a tank to melt snow on a road surface, and particularly to a nozzle connected to a pipeline connected to the tank. The present invention relates to an antifreezing agent spraying vehicle that discharges and sprays an antifreezing agent toward a road surface.

[0002]

2. Description of the Related Art Conventionally, as an anti-freezing agent spraying vehicle of this type, for example, as shown in FIG. 14, a tank 2 mounted on a vehicle 1 for storing a liquid anti-freezing agent and a pipe connected to the tank 2 are provided. Pipes 3 and 4, a feed pump 5 that feeds the antifreezing agent of the tank 2 into the pipes 3, and an outlet 6 of the pipes 3 and 4 that discharges and sprays the antifreezing agent toward the road surface. And a plurality of nozzles 7 connected to a part of the outlet 6 and discharging and spraying the antifreezing agent toward the road surface. And pipelines 3, 4
Manual valves (C ₁ -C) provided in the middle of
By adjusting the opening degree by ₇ ), the discharge amount from the outlet 6 and the nozzle 7 is set, and in this state, the vehicle 1 is made to travel and the pump 5 in the pipeline 3 is forcibly
In the pipe line 4, the antifreezing agent was sprayed by free fall.

[0003]

By the way, in this conventional anti-freezing agent spraying vehicle, the manual valve (C _1-
Since the discharge amount from the outlet 6 and the nozzle 7 is adjusted by C ₇ ), it is a so-called "dripping flow" method, and since a fixed amount can be discharged even if the vehicle speed changes, the spray density changes, Therefore, there is a problem in that the antifreeze agent sprayed on the road surface becomes uneven, wasteful, and sufficient snow melting cannot be performed. That is, when the vehicle 1 is at a low speed, the amount of the antifreezing agent is large, so that the antifreezing agent is unnecessarily sprayed, the amount of the antifreezing agent used is wasted, and the snow melting cost is accordingly increased. There has been a problem that the antifreeze agent may cause an environmental impact as the price increases. Further, when the vehicle 1 is at a high speed, the amount of the antifreezing agent is small, so that sufficient snow melting cannot be performed.

Furthermore, it is necessary to adjust the manual valve and control the vehicle speed step by step in order to make the spray density constant.
There is also a problem that the skill of the operator is required and the burden is heavy, and it is not possible to perform detailed control according to the road surface condition. In addition, there is a demerit that the road surface distance that can be covered by the anti-freezing agent installed in the tank 2 cannot be predicted.

The present invention has been made in view of the above problems, and an object thereof is to make it possible to make the spraying density constant even if the vehicle speed changes and to spray a proper amount of the antifreezing agent to the road surface. To ensure that the snow melt is not inadequate
At the same time, it is possible to eliminate the waste of the amount of the antifreezing agent used, to reduce the snow melting cost, to minimize the influence on the environment, and to improve the spraying workability.

[0006]

In order to solve such a problem, the technical means of the present invention comprises a tank mounted on a vehicle for storing a liquid antifreezing agent, and a pipeline provided in the tank. An anti-freezing agent sprayer comprising a feed pump for feeding an anti-freezing agent for a tank into the pipeline, and a plurality of nozzles connected to the pipeline for discharging and spraying the anti-freezing agent toward a road surface The vehicle is provided with a spraying amount changing means that is drive-controlled to change the spraying amount from the nozzles, and a control means that drives and controls the spraying amount changing means according to the vehicle speed.

If necessary, the spraying amount changing means is branched to the above-mentioned pipe line and is connected to the return pipe line for returning the antifreezing agent to the tank, and the opening degree provided in the return pipe line can be changed. An opening / closing valve that is formed to change the flow rate of the return pipe by changing the opening and an opening actuator that changes the opening of the opening / closing valve are configured.

Further, if necessary, the pipe line on the downstream side of the on-off valve is constituted by a set of a plurality of branch pipe lines which are parallel to each other, and a plurality of nozzles are connected to each of the branch pipe lines, respectively, and the spray amount is The changing means is provided with a switching valve that is provided in each of the branch pipes and that can switch the branch pipes to open and close, and a switching actuator that opens and closes the switching valve.

Further, if necessary, the control means controls the opening degree storage means for storing the opening degree of the opening / closing valve corresponding to the vehicle speed, the vehicle speed detecting means for detecting the vehicle speed, and the vehicle speed detected by the vehicle speed detecting means. Based on the opening degree driving means, the opening degree actuator driving means drives the opening degree actuator so that the opening degree corresponds to the vehicle speed stored in the opening degree storage means.

Further, if necessary, the control means includes an opening degree storage means for storing the opening degree of the opening / closing valve corresponding to the vehicle speed, a vehicle speed detection means for detecting the vehicle speed, and a vehicle speed detected by the vehicle speed detection means. Based on the above, the opening actuator driving means for driving the opening actuator to the opening corresponding to the vehicle speed stored in the opening storage means, and the opening / closing for storing the open / closed state of each switching valve corresponding to the vehicle speed Based on the vehicle speed detected by the vehicle speed detection means, the state storage means and the switching actuator drive means for driving the corresponding switching actuator so that the switching valve corresponding to the vehicle speed stored in the open / closed state storage means is opened or closed. It has a configuration including and.

Also, if necessary, the control means stores the opening degree memory for storing the opening degree of the on-off valve corresponding to the vehicle speed for each spraying reference amount in which the spraying reference amount per unit area on the road surface is determined stepwise. Means, a spraying reference amount setting means for setting the spraying reference amount, a vehicle speed detecting means for detecting a vehicle speed,
Based on the spraying reference amount set in the spraying reference amount setting means and the vehicle speed detected by the vehicle speed detecting means, the opening is made to be the opening corresponding to the vehicle speed at the spraying reference amount stored in the opening degree storing means. Degree actuator driving means for driving the degree actuator.

Further, if necessary, the control means stores the opening degree of the opening / closing valve corresponding to the vehicle speed for each spraying reference amount in which the spraying reference amount per unit area for the road surface is determined stepwise. Storage means, spraying reference quantity setting means for setting the spraying reference quantity, vehicle speed detecting means for detecting a vehicle speed, spraying reference quantity set in the spraying reference quantity setting means and vehicle speed detected by the vehicle speed detecting means Based on an opening actuator driving means for driving the opening actuator so that the opening corresponds to the vehicle speed in the spraying reference amount stored in the opening storage means, and a spraying reference amount per unit area with respect to the road surface. Opening / closing state storage means for storing the opening / closing state of the switching valve corresponding to the vehicle speed for each stepwise determined spraying reference quantity, and the spraying reference quantity set in the spraying reference quantity setting means And a switching actuator driving means for driving the corresponding switching actuator so that each switching valve is opened / closed corresponding to the vehicle speed at the spraying reference amount stored in the opening / closing state storage means based on the vehicle speed detected by the vehicle speed detection means. It has a configuration with and.

Further, the control means includes a low speed drive means for driving the switching actuator so as to intermittently open and close the switching valve according to a set intermittent time when the vehicle speed is a low speed below a predetermined value, and the switching valve is intermittently operated. It is effective to have an intermittent time setting means for setting the time.

[0014]

According to this means, when the vehicle is run on the required road surface and the pump is driven to discharge the antifreezing agent from the nozzle for spraying, the control means changes the spraying amount according to the vehicle speed. Drive control of the means. As a result, the spray amount is adjusted according to the vehicle speed. Therefore, it is possible to spray a small amount at a low speed and a large amount at a high speed to perform control to make the spray density constant, thereby spraying an appropriate amount of the antifreezing agent without causing insufficient snow melting, and Therefore, it becomes possible to prevent waste of the amount of the antifreezing agent used.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An anti-freezing agent spraying vehicle according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The same components as those described above are designated by the same reference numerals and will be described. 1 to 5, reference numeral 1 denotes a vehicle, 2 denotes a tank mounted on the vehicle 1 for storing a liquid antifreezing agent (for example, having a capacity of 6
000 liters (specific gravity 1.0)). As the antifreezing agent, calcium chloride solution or sodium chloride solution is used. Recently, since calcium chloride solution combines with dust on the road surface and causes slime, sodium chloride solution (for example, 23% solution, specific gravity = 1.14) is common.

Reference numeral 10 is a pipe line provided in the tank 2.
As shown in FIG. 2, the pipeline 10 is extended from the existing pipeline 4 of the related art described above, and is provided with a main pipe 12 extending from the tank 2 via a manual valve 11. Main pipe 1
A feed pump 13 for feeding the antifreezing agent for the tank 2 is installed in the pipe line 2. The feed pump 13 is, for example, as shown in FIGS. 5 and 6, a gasoline engine 13
It is a vane type pump driven by a, for example, the discharge amount is 190 L / min, the lift is 30.5 m, and 3600 rp.
m, 3.5 horsepower is used. 13b is tank 2
Is a suction port, and 13c is a discharge port. Delivery pump 13
Is mounted on the rear portion 1b of the vehicle 1. Also, reference numeral 14
Is a Y-type strainer interposed in the main pipe 12, and 15 is the main pipe 1.
No air vent valve. The existing existing pipelines 3, 4
Always closes its manual valves (C _{1 to} C ₇ ) and does not use it.

To the main pipe 12, a set of a plurality of (three in the embodiment) branch pipe lines 16 parallel to each other is connected. The tip of each branch pipe 16 extends to the front side of the vehicle 1, and the lateral pipes 17 extending in the vehicle width direction are connected to the tip.
Each of the lateral pipes 17 is located below the front bumper 1a of the vehicle 1 and has a length of, for example, about 3.5 m.
The pipe diameters of the respective branch pipe lines 16 are different in three stages, and the first pipe pipe line K1, the second pipe line K2, and the third pipe line K3 are configured from the branch pipe pipe 16 having a small pipe diameter.

In the lateral pipes 17 of the respective system pipelines K1, K2, K3, the spraying width of the antifreezing agent should be about 3.5 m,
A plurality of nozzles 18 (7 nozzles each in the embodiment) are connected at predetermined intervals. The orifice diameter of the nozzle 18 of each system conduit K1, K2, K3 is equal to each system conduit K1, K2,
In proportion to the pipe diameter of K3, the pipe diameter gradually increases from the first system pipeline K1. FIG. 8 shows the relationship between the spraying amount (L / min) from the nozzle 18 and the spraying pressure (Kgf / cm ² ) in each system pipeline K1, K2, K3. The amount of spray is the amount of spray for seven nozzles 18, and the number in parentheses is nozzle 1
The spraying amount per 8 is shown.

Reference numeral 20 denotes a spray amount changing means which is drive-controlled to change the spray amount from the nozzle 18. The spraying amount changing means 20 is branched and connected to the main pipe 12 of the pipe 10 to return the antifreezing agent to the tank 2.
And an opening / closing valve 22 provided in the return pipe 21 so that the opening can be changed and changing the flow rate of the return pipe 21 by changing the opening, and an opening actuator for changing the opening of the opening / closing valve 22 And 23. The opening actuator 23 is composed of a stepping electric motor.
Reference numeral 24 is a normally open manual valve in series with the opening / closing valve 22, and 25 is a manual valve provided in parallel with the opening / closing valve 22 and provided as a spare of the opening / closing valve 22.

Further, the spray amount changing means 20 includes a switching valve 26 which is provided in each of the branch pipes 16 and which can switch the branch pipes 16 between open and closed, and a switching actuator 27 which opens and closes the switch valve 26. I have it. The switching actuator 27 is composed of an electric motor. 28 is a normally open manual valve in series with the switching valve 26. Reference numeral 29 is a pressure gauge for measuring the pressure of each branch conduit 16. As shown in FIGS. 3, 5 and 6, the valve relating to the spraying amount changing means 20 is unitized into the rear portion 1b of the vehicle 1.
It is installed in.

As shown in FIG. 1, reference numeral 30 is a control means for driving and controlling the spray amount changing means 20 in accordance with the vehicle speed. The control unit 30 stores the opening amount of the opening / closing valve 22 corresponding to the vehicle speed for each spraying reference amount in which the spraying reference amount per unit area for the road surface is determined stepwise, and similarly to the road surface. And an open / closed state storage means 32 for storing the open / closed state (open or closed) of the switching valve 26 corresponding to the vehicle speed for each spraying reference amount in which the spraying reference amount per unit area is determined stepwise.

In the embodiment, as shown in FIGS. 9 to 11, the spraying reference amount is set in five stages corresponding to the road surface condition. For example, in the case of preventive spraying or ice film, , 30 cc / m ² , pressure snow, 40 cc / m ² , 50 cc / m in case of fresh snow or deep snow, depending on the depth of the snow cover
^2, defines so on ^{75cc / m 2, 100cc / m} 2. FIG. 9 shows the spray reference amount (30 cc / m ² , 4
0 cc / m ² , 50 cc / m ² , 75 cc / m ² , 10
Spray rate (L / min) corresponding to vehicle speed (Km / h) for each 0 cc / m ² ), opening degree (%) of open / close valve 22, open / close state of switching valve 26 (where the spray flow rate is written The figure shows open, the one in which the spray amount is not written is closed) and the spray pressure (Kg / cm ² ).

Opening degree storage means 31 and open / closed state storage means 3
2 stores the opening degree of the open / close valve 22 and the open / closed state (open or closed) of the switching valve 26 according to the table of FIG. 9. The application amount in the table of FIG. 9 corresponds to any of the application amounts in the table of FIG.
The numbers up to No. 17 are added and described in the table of FIG. 8). Figure 10
9 is a graph showing the data of the table of FIG. 9 in a simplified form into a linear function. Further, FIG. 11 shows the sprayable distance per tank amount for each spray reference amount. If the tank capacity is 6000 liters (specific gravity 1.0), the above-mentioned single tank capacity is 525 because of the constant loading capacity.
It becomes 0 liters (specific gravity 1.14).

Further, as shown in FIG. 1, the control means 30
Is a spray reference amount setting means 33 for setting a spray reference amount,
The vehicle speed detecting means 34 for detecting the vehicle speed is provided. As the vehicle speed detection means 34, an existing sensor such as a vehicle speed sensor of an operation management device that automatically records an operation record of the vehicle 1 is used. Further, the control means 30 determines the vehicle speed at the application reference amount stored in the opening degree storage means 31 based on the application reference amount set by the application reference amount setting means 33 and the vehicle speed detected by the vehicle speed detection means 34. An opening actuator drive means 35 for electrically driving the opening actuator 23 to a corresponding opening degree, a spraying reference amount set in the spraying reference amount setting means 33, and the vehicle speed detecting means 34.
Based on the vehicle speed detected by the switch actuator drive, which electrically drives the corresponding switch actuator 27 so that each switch valve 26 is opened / closed corresponding to the vehicle speed at the spray reference amount stored in the open / close state storage means 32. And means 36.

Furthermore, the control means 30 causes the switching actuator 2 to intermittently open and close the switching valve 26 according to the set intermittent time when the vehicle speed is a low speed below a predetermined value.
A low speed drive means 37 for electrically driving 7 and an intermittent time setting means 38 for setting the intermittent time of the switching valve 26 are provided. The predetermined vehicle speed value is, for example, 4.5K
It is set to m / h. Also, the set intermittent time is
It is set in three stages of 5, 15, and 25 seconds. 12
[Fig. 6] is a timing diagram showing an intermittent time and an opening / closing operation time of the switching valve 26 for each set value.

The control means 30 is realized by a system such as a microcomputer equipped with a ROM chip. As shown in FIG. 13, reference numeral 40 denotes a control box of the control means 30 provided in the driver's seat, which includes a power button (start button) 41 and a spray reference amount setting button of a spray reference amount setting means 33 for setting a spray reference amount. 42, switching valve 2
An intermittent time setting button 43 for setting an intermittent time of 6 and an application stop button 44 are provided.
When the spraying stop button 44 is pushed, the valves 22, 26
Is set to the closed state, and the spraying reference amount setting with the spraying reference amount setting button 42 and the intermittent time setting with the intermittent time setting button 43 are canceled.

Therefore, when spraying the antifreezing agent using the antifreezing agent spraying vehicle according to this embodiment, first,
The engine 13a of the feed pump 13 is driven to drive this pump 13. In this state, the valves 22 and 26 are set to the closed state, and the antifreezing agent is not discharged. In this state, shutting down the manual valve 25 during load operation of the feed pump 13 causes overheating of the internal liquid of the pump casing, which causes pump failure for a long time. It is desirable that the antifreezing agent be circulated by opening the antifreezing agent. Further, one of the spraying reference amount setting buttons 42 of the control box 40 is pushed to set the spraying reference amount. For example, 40c
Set to c / m ² . Next, by pressing any one of the intermittent time setting buttons 43, the open / close intermittent time of the switching valve 26 at low speed (for example, 4.5 Km / h or less) is set. For example, it is set to 15 seconds.

In this state, the vehicle 1 is run on a desired road surface and the power button (start button) 41 of the control box 40 is pushed. In this case, the vehicle speed detecting means 34
Detects the vehicle speed, and the opening actuator drive means 3
5 is an opening corresponding to the vehicle speed at the application reference amount stored in the opening storage unit 31 based on the application reference amount set by the application reference amount setting unit 33 and the vehicle speed detected by the vehicle speed detection unit 34. To drive the opening actuator 23. Further, the switching actuator drive means 36 sets the vehicle speed at the spray reference quantity stored in the open / close state storage means 32 based on the spray reference quantity set in the spray reference quantity setting means 33 and the vehicle speed detected by the vehicle speed detecting means 34. The corresponding switching actuator 27 is driven so that the corresponding switching valve 26 is opened or closed.

Now, for example, as shown in FIG. 9, the vehicle speed is 25 km when the spraying reference amount is set to 40 cc / m ^2.
When / h, the opening actuator driving means 35 drives the opening actuator 23 to set the opening of the opening / closing valve 22 to 35%. Further, the switching actuator driving means 3
6 drives each switching actuator 27 to close the switching valve 26 of the first system pipeline K1, open the switching valve 26 of the second system pipeline K2, and close the switching valve 26 of the third system pipeline K3. To do. As a result, the anti-freezing agent is transferred to the second system pipeline K2.
Nozzle 18 of 63.7 L / min is sprayed and sprayed (scattering number 6 in the figure), and the spraying density is a spraying reference amount of 40 cc.
/ M is maintained at ^2.

From this state, the vehicle speed becomes faster,
For example, as shown in FIG. 9, when the vehicle speed reaches 50 Km / h in the state of setting 40 cc / m ² , the opening actuator driving means 35 drives the opening actuator 23 to change the opening of the opening / closing valve 22. Make it 51%. In addition, the switching actuator drive means 36 is used for each switching actuator 2
7, the switching valve 26 of the first system pipeline K1 is closed, the switching valve 26 of the second system pipeline K2 is closed, and the switching valve 26 of the third system pipeline K3 is opened. As a result, the antifreezing agent is supplied from the nozzles 18 to 123.
9L / min is discharged and sprayed (scattering number 1 in the figure)
0), that is, about twice as much as when the vehicle speed is 25 km / h, and the application density is kept at the application standard amount of 40 cc / m ² .

Therefore, the spraying amount can be changed according to the vehicle speed, so that the spraying density can be made constant by spraying a small amount at low speed and a large amount at high speed, so that an appropriate amount of the antifreezing agent is sprayed. As a result, snow melting does not become insufficient and unnecessary spraying of the antifreezing agent is prevented.
In addition, since the amount of spraying is automatically controlled, the skill of the operator is not required, and the spraying workability is greatly improved. Further, in this case, since the opening degree of the return conduit 21 is adjusted,
Compared with the case where a flow rate control valve is directly installed in the pipe line 10,
As long as the performance of the feed pump 13 can satisfy the required maximum pressure and the maximum spraying amount of the pipe line 10, the pressure in the pipe can be freely adjusted according to the spraying characteristic of the nozzle 18 in which the water spraying amount increases in accordance with the pressure increase. As a result, the amount of spraying is increased / decreased, so that the total flow rate from the feed pump 13 is adjusted, the adjustment range can be widened, and the adjustment is reliably performed. Further, since the spray amount is adjusted by opening and closing the branch pipe lines 16 that are parallel to each other, more fine and reliable flow rate adjustment is performed.

Furthermore, since the spraying reference amount per unit area for the road surface is set and the spraying amount is changed in accordance with the vehicle speed, the road surface can be covered by pressure snow, fresh snow, deep snow, or freezing of the road surface. Depending on the situation, the spraying density is surely made constant, and an appropriate amount of the antifreezing agent is sprayed to surely prevent unnecessary spraying.

Further, when the vehicle speed becomes 4.5 km / h or less due to a stop waiting for a signal or a traffic jam, etc., first,
As shown in FIG. 9, the opening actuator driving means 35 drives the opening actuator 23 to set the opening of the opening / closing valve 22 to 100%. Further, the switching actuator driving means 36 drives each switching actuator 27, and the first actuator
The switching valve 26 of the system pipeline K1 is opened, and the second system pipeline K2 is opened.
And the switching valve 26 of the third system pipeline K3 is closed. As a result, the antifreezing agent is about to be discharged and sprayed from the nozzle 18 of the first system pipeline K1 at 12.0 L / min (spray number 1 in the figure).

However, at this time, the low speed drive means 37 functions to drive the switching actuator 27 so as to intermittently open and close the switching valve 26 of the first system pipeline K1 according to the set intermittent time. Now, for example, if the intermittent time is set to 15 seconds, the switching actuator 27 of the first system pipeline K1 is driven to intermittently open and close the switching valve 26 as shown in FIG. 12 (b). To do. for that reason,
At this low speed, the antifreezing agent is sprayed intermittently, so there is no runaway, and unnecessary spraying of the antifreezing agent is prevented, which further wastes the amount of antifreezing agent used. Is prevented.

In this way, the antifreezing agent is sprayed while the spray amount is changed according to the vehicle speed. When it is desired to change the spraying reference amount depending on the road surface condition, the spraying stop button 44 is pushed to stop the spraying once, and the spraying reference amount setting button 42 is pushed and reset to set the power again, as in the above. The button (start button) 41 may be pushed. In addition, when it is desired to change the intermittent time, similarly, the intermittent time setting button 43 may be pushed and reset. Even when these settings are changed, the spraying amount is changed according to the vehicle speed, held at the set spraying reference amount, and the spraying density is made constant, as in the above case.

In the above embodiment, the numerical values shown in FIGS. 8 and 9 are different depending on the conditions such as the pipe diameter, the pipe length, the capacity of the feed pump 13, the orifice diameter of the nozzle 18, the number of the nozzles 18 and the like. Therefore, it may be set according to the actual situation. Further, in the above embodiment, the branch pipeline 16 has three systems, but it is not necessarily limited to this and may have two systems or less, or four systems or more, and may be appropriately changed. . Further, in the embodiment, the branch line 16 is extended to the front side so that the nozzle 18 is connected to the vehicle 1.
However, the nozzle 18 may be provided so as to be provided at the rear portion of the vehicle 1 and may be appropriately changed. When provided in the rear part, the influence of the antifreezing agent on the vehicle 1 is reduced. The anti-freezing agent spraying vehicle according to the present invention may be used not only for spraying the anti-freezing agent but also for spraying water or other liquids.

[0037]

As described above, according to the anti-freezing agent spraying vehicle of the present invention, the spraying amount changing means for changing the spraying amount from the nozzle and the spraying amount changing means for driving the vehicle are controlled according to the vehicle speed. Since it is equipped with a control means, it is possible to change the spraying amount according to the vehicle speed, that is, it is possible to spray a small amount at a low speed and a large amount at a high speed to make the spraying density constant. It is possible to sprinkle the amount of snow to prevent the snowmelt from becoming insufficient, and to prevent unnecessary sprinkling, so that it is possible to reduce the cost by eliminating the waste of the amount of the antifreezing agent used. Therefore, the influence of the antifreezing agent on the environment can be suppressed as much as possible. Further, since the amount of spraying can be automatically controlled, detailed control can be easily performed according to the road surface condition, and the skill of the operator is not required, so that the spraying workability can be greatly improved. Furthermore, there is also an advantage that the road surface distance that can be covered by the antifreezing agent loaded in the tank at one time can be predicted.

Further, in the case where the spraying amount changing means is configured to change the opening degree of the opening / closing valve provided in the return pipeline branched and connected to the pipeline by the opening actuator, the return pipeline is opened. As the flow rate adjustment valve is installed directly in the pipeline, as long as the feed pump performance satisfies the required maximum pressure and maximum spraying amount of the pipeline, According to the nozzle spraying characteristics that the water spraying amount increases, the pressure in the pipe can be freely adjusted to increase or decrease the spraying amount.Therefore, since the total flow rate from the feed pump can be adjusted, a wide adjustment range can be taken Further, the nozzle characteristics are simple, and the cost can be reduced accordingly.

Further, the pipe line on the downstream side of the on-off valve is constituted by a set of a plurality of branch pipe lines which are parallel to each other, a plurality of nozzles are connected to each branch pipe line, and a spraying amount changing means is provided for each branch pipe. When the switching valve provided in each of the pipelines is opened and closed by the switching actuator, the spraying amount can be adjusted not only by adjusting the opening degree of the return pipeline but also by opening and closing each branch pipeline in parallel with each other. Therefore, finer flow rate adjustment can be performed.

Furthermore, when the control means drives the opening actuator so that the opening corresponds to the vehicle speed stored in the opening storage means based on the vehicle speed detected by the vehicle speed detecting means, Since the opening degree of the opening / closing valve corresponding to the vehicle speed is stored in advance, the flow rate adjustment can be reliably set to a predetermined value.

Further, based on the vehicle speed detected by the vehicle speed detecting means by the control means, the corresponding switching actuator is driven so as to open / close each switching valve corresponding to the vehicle speed stored in the opening / closing state storage means. In this case, since the open / closed state of each switching valve corresponding to the vehicle speed is stored in advance, the flow rate adjustment can be more surely set to a predetermined value.

Furthermore, the opening corresponding to the vehicle speed at the spray reference amount stored in the opening storage means on the basis of the spray reference amount set in the spray reference amount setting means by the control means and the vehicle speed detected by the vehicle speed detecting means. When the opening actuator is driven so that it becomes, the spraying reference amount per unit area for the road surface can be set and the spraying amount can be changed according to the vehicle speed. , It is possible to make the spraying density consistent and to make finer adjustments according to the road surface conditions such as during heavy snowfall or when the road surface freezes. It is unnecessary to spray an appropriate amount of antifreezing agent. It is possible to surely prevent the spraying.

Furthermore, each of the vehicle speeds corresponding to the spray reference amount stored in the opening / closing state storage means is based on the spray reference amount set in the spray reference amount setting means by the control means and the vehicle speed detected by the vehicle speed detecting means. Even when the corresponding switching actuator is driven to open / close the switching valve, the spraying reference amount per unit area for the road surface can be set and the spraying amount can be changed according to the vehicle speed. Depending on the road surface conditions, such as when the snow is pressed, when it is fresh, when it is deep snow, or when the road surface is frozen, the spray density can be reliably kept constant, and even finer adjustments can be made. You can surely prevent unnecessary spraying.

Further, when the control means drives the switching actuator so that the switching valve is intermittently opened and closed according to the set intermittent time when the vehicle speed is a low speed equal to or lower than a predetermined value, when traffic is congested, traffic lights, etc. Since the anti-freezing agent is sprayed intermittently at low speeds such as when stopped at,
As much as that, it is possible to prevent unnecessary spraying of the antifreezing agent, further reduce waste of the amount of the antifreezing agent used, and achieve cost reductions, and also to minimize the impact of the antifreezing agent on the environment. You can

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an antifreezing agent spraying vehicle according to an embodiment of the present invention.

FIG. 2 is a diagram showing a piping state of an antifreezing agent spraying vehicle according to an embodiment of the present invention.

FIG. 3 is a side view showing an antifreezing agent spraying vehicle according to an embodiment of the present invention.

FIG. 4 is a front view showing an antifreezing agent spraying vehicle according to an embodiment of the present invention.

FIG. 5 is a perspective view showing a state of a rear portion of the antifreezing agent spraying vehicle according to the embodiment of the present invention.

FIG. 6 is a front view of the essential parts showing the piping state of the spray amount changing means of the antifreezing agent spray vehicle according to the embodiment of the present invention.

FIG. 7 is a side view of FIG. 6 showing a piping state of the spray amount changing means of the antifreezing agent spray vehicle according to the embodiment of the present invention.

FIG. 8 is a table showing a spraying amount with respect to a spraying pressure for each pipeline system of an antifreezing agent spraying vehicle according to an embodiment of the present invention.

FIG. 9 is a table showing the spraying amount and the opening corresponding to the vehicle speed of the antifreezing agent spraying vehicle according to the embodiment of the present invention.

FIG. 10 is a graph showing a relationship between a vehicle speed and a spray amount for each spray reference amount of the antifreezing agent spray vehicle according to the embodiment of the present invention.

FIG. 11 is a table showing sprayable distances per tank for each spraying reference amount of the antifreezing agent spraying vehicle according to the embodiment of the present invention.

FIG. 12 is a graph showing the opening / closing timing of the switching valve for each intermittent time setting of the antifreeze agent spray vehicle according to the embodiment of the present invention.

FIG. 13 is a view showing a control box of the antifreezing agent spraying vehicle according to the embodiment of the present invention.

FIG. 14 is a diagram showing an example of a piping state of a conventional anti-icing agent spray vehicle.

[Explanation of symbols]

1 Vehicle 2 Tank 3, 4 Pipe 5 Feed Pump 6 Outlet 7 Nozzle C _{1 to} C ₇ Manual Valve 10 Pipe 12 Main Pipe 13 Feed Pump 16 Branch Pipe 17 Side Pipe 18 Nozzle K1 1st System Pipeline K2 1st 2 system pipeline K3 3rd system pipeline 20 Spray amount changing means 21 Return pipeline 22 Opening valve 23 Opening actuator 26 Switching valve 27 Switching actuator 30 Control means 31 Opening storing means 32 Opening state storing means 33 Spreading reference amount setting Means 34 Vehicle speed detecting means 35 Opening actuator driving means 36 Switching actuator driving means 37 Low speed driving means 38 Intermittent time setting means 40 Control box 41 Power button (start button) 42 Dispersion reference amount setting button 43 Intermittent time setting button 44 Dispersion stop button

Claims (8)

[Claims] 1. A tank mounted on a vehicle for storing a liquid antifreezing agent, a pipe lined to the tank, a feed pump for feeding the tank antifreezing agent into the pipe line, In an antifreezing agent spraying vehicle equipped with a plurality of nozzles connected to a pipeline and discharging and spraying an antifreezing agent toward a road surface,
An antifreezing agent spraying vehicle, comprising: a spraying amount changing means that is drive-controlled to change a spraying amount from the nozzle; and a control means that drives and controls the spraying amount changing means according to a vehicle speed. 2. A return pipe line for branching the spray amount changing means to the pipe line for returning the antifreezing agent to the tank, and a return pipe line provided with a changeable opening degree. The anti-icing agent spray vehicle according to claim 1, further comprising an opening / closing valve that changes a flow rate of the return pipe by changing an opening degree, and an opening degree actuator that changes an opening degree of the opening / closing valve. . 3. A conduit on the downstream side of the opening / closing valve is formed by a set of a plurality of branch conduits that are parallel to each other, and a plurality of nozzles are connected to each branch conduit, and the spraying amount changing means is The antifreezing agent according to claim 2, further comprising a switching valve that is provided in each of the branch pipes and that can switch the branch pipes between open and closed, and a switching actuator that opens and closes the switching valve. Scatter car. 4. The control means comprises: an opening degree storage means for storing an opening degree of the opening / closing valve corresponding to a vehicle speed; a vehicle speed detection means for detecting a vehicle speed; and a vehicle speed detected by the vehicle speed detection means. The anti-icing agent spray vehicle according to claim 2, further comprising: an opening actuator driving unit that drives the opening actuator so that the opening corresponds to the vehicle speed stored in the opening storage unit. 5. The control means comprises: an opening degree storage means for storing an opening degree of the opening / closing valve corresponding to a vehicle speed; a vehicle speed detection means for detecting a vehicle speed; and a vehicle speed detected by the vehicle speed detection means. An opening actuator driving means for driving the opening actuator so that the opening corresponds to the vehicle speed stored in the opening storage means, and an opening / closing state storage means for storing the opening / closing state of each of the switching valves corresponding to the vehicle speed. Switching actuator drive means for driving the corresponding switching actuator so that the switching valve corresponding to the vehicle speed stored in the opening / closing state storage means is opened or closed based on the vehicle speed detected by the vehicle speed detection means. The anti-freezing agent spraying vehicle according to claim 3, wherein 6. An opening degree storage means for storing the opening degree of the opening / closing valve corresponding to a vehicle speed for each spraying reference amount in which a spraying reference amount per unit area on a road surface is determined stepwise, the control means comprising: A spraying reference amount setting means for setting a spraying reference amount, a vehicle speed detecting means for detecting a vehicle speed, a spraying reference amount set in the spraying reference amount setting means, and the vehicle speed detected by the vehicle speed detecting means. The anti-freezing agent spraying according to claim 2, further comprising: an opening actuator driving means for driving the opening actuator so that the opening corresponds to the vehicle speed in the application reference amount stored in the storage means. car. 7. An opening degree storage means for storing the opening degree of the opening / closing valve corresponding to the vehicle speed for each spraying reference amount in which the spraying reference amount per unit area on the road surface is determined stepwise, the control means comprising: The spraying reference amount setting means for setting the spraying reference amount, the vehicle speed detecting means for detecting the vehicle speed, the spraying reference amount set in the spraying reference amount setting means and the vehicle speed detected by the vehicle speed detecting means. Degree actuator driving means for driving the opening actuator so that the opening corresponds to the vehicle speed at the application reference amount stored in the degree storage means, and the application reference amount per unit area for the road surface is determined stepwise. The open / closed state storage means for storing the open / closed state of the switching valve corresponding to the vehicle speed for each spray reference amount, the spray reference amount set in the spray reference amount setting means, and the vehicle speed detection hand. Switching actuator driving means for driving the corresponding switching actuator so that each switching valve is opened / closed corresponding to the vehicle speed at the spray reference amount stored in the opening / closing state storage means based on the vehicle speed detected by the gear. The anti-freezing agent spraying vehicle according to claim 3, wherein 8. The control means comprises a low speed drive means for driving a switching actuator so as to intermittently open and close the switching valve according to a set intermittent time when the vehicle speed is a low speed equal to or lower than a predetermined value, and the switching valve is intermittently operated. The anti-icing agent spray vehicle according to claim 3, 5 or 7, further comprising an intermittent time setting means for setting a time.