JPH11350414A - Scattering system surface treatment construction and scattering system surface treatment work vehicle used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new scattering system surface treatment construction method which is simple, inexpensive and very reliable, and a scattering system surface treatment work vehicle used for the above construction method. SOLUTION: A scattering system surface treatment construction method uses a working vehicle having a binder scattering device and an aggregate scattering device between a front wheel and a rear wheel of a car in these order from a position near the front of the car, and the working car scatters the binder and the aggregate on the road surface in these order as the working vehicle is advanced, and a scattering system surface treatment work vehicle 1 having the binder scattering device and the aggregate scattering device between the front wheel and the rear wheel of the car in the above order from a position near the front of the car is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spray-type surface treatment method and a spray-type surface treatment vehicle used for the method.
A novel and highly durable spray-type surface treatment layer that enables the construction of a uniform and durable spray-type surface treatment layer by performing the spraying of the binder and the aggregate in a continuous manner by a single work vehicle. The present invention relates to a spraying type surface treatment method and a spraying type surface treatment work vehicle used therein.

[0002]

2. Description of the Related Art As road pavement becomes available for traffic,
The road surface is gradually aged and deteriorated, and the road surface may be worn to cause unevenness, or the pavement surface may have cracks or the like. As a method for repairing such aged or deteriorated road pavement, conventionally, two surface treatment methods, mainly, a mixed surface treatment method and a spray surface treatment method, have been proposed.

[0003] Among them, the mixed type surface treatment method uses a bituminous material such as asphalt (hereinafter simply referred to as asphalt).
This is a method of repairing unevenness, cracks, and the like by transporting an asphalt mixture produced by mixing steel and aggregate in a plant to a construction site and laying it on an aged or deteriorated road surface. Since the asphalt mixture is laid on the road surface, it is basically a renewal of the pavement, and although it is a repairing method, it is a surface treatment method that requires substantially the same steps as the ordinary pavement building process.

[0004] On the other hand, the spraying surface treatment method is a simpler method, in which bituminous material such as asphalt is sprayed in a film form on an aged or deteriorated road surface, and then aggregate is simply applied thereon. This is a very simple construction method in which the aggregate is bonded to the road surface by bituminous material, and the layer is composed of, for example, bituminous material and a single-layer aggregate on the road surface. That is, in the spraying type surface treatment method, rather than laying an asphalt mixture, the aggregate is simply sprayed, and the sprayed aggregate is bonded to the road surface by a bituminous material acting as a binder, and the aggregate single layer Is to construct a surface treatment layer.

Conventionally, the spraying type surface treatment method is typically performed by a method as shown in FIG. 9, for example. That is,
In FIG. 9, first, the road sweeper 102 advances in the direction of the arrow to clean the road surface 101 to be subjected to the surface treatment, and then the asphalt distributor 103 advances to spray the asphalt as the binder onto the road surface 101. . Subsequently, the truck 104 on which the aggregate is mounted tilts the bed and disperses the aggregate on the asphalt layer from the rear, and moves in the direction of the arrow, that is, the vehicle travels backward. This is to prevent the tire of the truck 104 from stepping on the asphalt layer that has already been sprayed. When the tire of the truck 104 passes over the asphalt layer, the asphalt layer at that portion adheres to the truck tire and becomes thinner, and not only weakens the bonding force between the aggregate and the road surface but also adheres to the truck 104 tire. This is because asphalt may cause a problem such as marking asphalt on the road surface when the truck travels on another road as it is. Subsequently, the sprinkled aggregate is rolled by the roller 105, and the load sweeper 102 passes again to remove excess aggregate and the like from the processing layer surface, and the operation is completed.

Conventionally, as described above, asphalt spraying as a binder and aggregate spraying are performed using separate vehicles.
Since they were performed as separate steps, it was difficult to cooperate with each other, and there was a problem that the work efficiency was poor, for example, the aggregate could not be sprayed immediately after the binder was sprayed. Also, since the truck 104 on which the aggregate is mounted must travel in a reverse state, the truck 104
Meandering, the aggregate cannot be properly sprayed on the spread binder, or the aggregate is sprayed from a relatively high position of the truck 104, so that the dropped aggregate jumps on the road surface, or There was a problem that it rolled and scattered outside the planned spray width. Moreover, due to such poor work efficiency, the constructed spray-type surface treatment layer generally lacks uniformity and durability of the finished surface, and aggregates are scattered in a relatively short time after the traffic is opened, and the oncoming vehicle In many cases, problems such as splattering on windshields and other obstacles of traffic and splattering on roadside homes occur. In addition, the asphalt layer at the trace of the scattered aggregate causes a vehicle slip or a flash phenomenon in summer, which is not preferable. Due to these drawbacks, the spray-type surface treatment method has the advantage of being simple and relatively inexpensive, but on the other hand, lacks reliability and has not been used as a repair method so far. Was. In particular, the above-mentioned drawback of the spray-type surface treatment method, which is inferior in durability, is considered to be a structural defect of the spray-type surface treatment method itself, in which the spread aggregate is simply bonded to the road surface with a binder, and the cause thereof is as follows. At present, it was left without being investigated.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned various drawbacks of the conventional spray type surface treatment method and to take advantage of the inherent advantages of the spray type surface treatment method. It is an object of the present invention to provide a simple and inexpensive spray-type surface treatment method that is highly reliable at the same time as providing a new spray-type surface treatment work vehicle used in the method.

[0008]

Means for Solving the Problems The inventors of the present invention have conducted research on a durable spraying type surface treatment method, and as a result, have found that a binder spraying device and an aggregate spraying device can be combined into a single work vehicle. By mounting and moving the work vehicle forward, at least from the application of the binder to the application of the aggregate, the work efficiency is dramatically increased, and the durability of the constructed surface treatment layer is also dramatically improved. The present invention was found to be improved, and it was found that a spray-type surface treatment layer having high uniformity and high durability could be constructed efficiently in an extremely short time.

That is, according to the present invention, a work vehicle provided with a binder dispersing device and an aggregate dispersing device between a front wheel and a rear wheel of a vehicle in this order from the front of the vehicle is used. While providing a spraying type surface treatment method for spraying the binder and the aggregate on the road surface in this order, the binder sprayer and the aggregate sprayer are arranged in this order from the side closer to the front of the vehicle,
It is an object of the present invention to solve the above-mentioned problem by providing a spray type surface treatment work vehicle provided between a front wheel and a rear wheel of a vehicle.

In the present invention, since the dispersing device for the binder and the dispersing device for the aggregate are provided in one work vehicle and between the front wheel and the rear wheel, the work vehicle can be moved forward.
It is possible to efficiently spread the binder and the aggregate on the road surface in this order. Aggregate is immediately scattered on the scattered binder, and the rear tires of the work vehicle do not directly step on the binder, so the binder adheres to the tires and becomes thinner, and the road surface and the aggregate Is not weakened, and other road surfaces are not stained by the bonding material attached to the tire. In addition, since the work can be performed while moving the work vehicle forward, the work vehicle can be easily operated, and the work vehicle can meander in the dark and the spray area fluctuates, and the speed fluctuates irregularly. Nor.

[0011] In the conventional spraying type surface treatment method, as described above, the asphalt as the binder and the aggregate are sprayed separately using separate vehicles, so that the bonding is performed. The time from the application of the aggregate to the application of the aggregate was not constant, and therefore, the state of the binder layer at the time when the aggregate was applied was inevitable. In other words, bitumen such as asphalt used as a binder is in a state where the temperature and the like are constantly controlled inside the asphalt distributor before spraying, but once sprayed on the road surface, immediately thereafter. From that point, the temperature starts to evaporate, and the properties change every moment. Conventionally, the aggregate has been sprayed on the basis that the bitumen such as asphalt should be maintained in a liquid or softened state visually or the like. This is a method that is commonly used when paving an asphalt mixture after spraying a primer, etc., but the aggregate is sufficiently mixed in advance with bitumen such as asphalt, and the aggregate surface is covered with bituminous material. In the case of the spray-type surface treatment method, unlike in the case of the above-mentioned mixture, the aggregate comes into contact with the bituminous material only after being sprayed. Therefore, the properties of the bituminous material at the time the aggregate is sprayed greatly affect the degree of adhesion between the aggregate and the bituminous material. If there is a change, the change directly affects the degree of adhesion between aggregate and bituminous material, and thus,
It is considered that the durability of the constructed surface treatment layer is affected. Thus, the finding that the irregular variation of the time interval between the application of the binder and the application of the aggregate has a significant effect on the durability of the surface treatment layer to be constructed has been confirmed by the present inventors. This is the first finding.

On the other hand, in the present invention, since the dispersing device for the binder and the dispersing device for the aggregate are provided in one work vehicle, the dispersing of the binder and the dispersing of the aggregate are integrated. The application of the aggregate is performed immediately after the application of the binder, preferably within a short period of time, and more preferably, at a short substantially constant time interval from the application of the binder, As a result, it is possible to construct a uniform and durable spray type surface treatment layer. In order to make the time from the application of the binder to the application of the aggregate almost constant, the work vehicle must be moved when the distance between the binder application device and the aggregate application device mounted on the work vehicle is constant. If the speed of the work vehicle changes, the distance between the binder sprayer and the aggregate sprayer may be changed according to the speed of the work vehicle. The spray direction of the spray device and / or the aggregate spray device may be changed. The work vehicle may be a wheel type or a crawler type. In the case of the crawler type, the vehicle front wheel refers to a crawler at the front of the vehicle, and the vehicle rear wheel refers to a crawler at the rear of the vehicle.

In the present invention, the binder is mounted on a work vehicle with a binder tank, and the binder is sprayed onto the road surface from a spraying device such as a spray nozzle via a pumping means such as a pump. Alternatively, the binder supply vehicle may be positioned behind the work vehicle, and may be sprayed on the road surface while receiving the supply of the binder from the binder supply vehicle as needed. In the case where the binder is sprayed while the binder is supplied from the binder supply vehicle, the work vehicle does not need to be equipped with a binder tank. A plurality of spraying devices such as spray nozzles are located substantially linearly in the width direction of the work vehicle, and the amount and width of spraying the binder can be changed as appropriate.

In the present invention, since the time from the dispersing of the binder to the dispersing of the aggregate is within a short period of time or a short period of time, the time is short in the vehicle for supplying the binder or in the binder tank mounted on the work vehicle. By keeping the state of the binder constant, it is possible to keep the properties of the binder at the time of spraying the aggregate substantially constant. In addition, if the auxiliary material spraying device is mounted on the work vehicle and the auxiliary material and the binder are mixed immediately before or during the application of the binder, the properties of the binder can be more easily managed.

In the present invention, the aggregate is dispersed by using an aggregate bottle. The aggregate bin is mounted on a work vehicle, and includes means for equalizing the distribution of the aggregate in the width direction of the work vehicle inside,
In the vicinity of the lower part, there is provided an aggregate outlet capable of adjusting the amount of aggregate discharged and / or the discharge width in the work vehicle width direction. Since the aggregate outlet of the aggregate bin is near the road surface, it is possible to scatter the aggregate from a relatively low position. There is no danger of splattering. By making the scatter width of the aggregate and the scatter width of the binder change in conjunction with each other, the construction width can be changed by a single operation, which is convenient.

In the present invention, it is possible to position the aggregate supply vehicle in front of the work vehicle, and to continuously perform the construction while receiving the supply of the aggregate from the aggregate supply vehicle as needed. In the front of the work vehicle of the present invention, it is desirable to provide a mounting portion for mounting the rear wheel of the aggregate supply vehicle, by mounting the rear wheel of the aggregate supply vehicle on the rear wheel mounting portion of the work vehicle, Both vehicles can be temporarily integrated, and work can be performed as if it were a single vehicle. Also, if the above-described binder supply vehicle is located behind the work vehicle and the construction is performed while receiving the supply of the binder from the binder supply vehicle as needed, the aggregate supply vehicle and the work vehicle of the present invention, and The three vehicles of the binder supply vehicle are integrated by the work vehicle of the present invention, and the spraying type surface treatment method can be continuously performed while the three types of vehicles advance in the forward direction together. .

In the present invention, a water and / or primer spraying device may be mounted on a work vehicle, and water or primer may first be sprayed on a road surface, and then a binder may be sprayed. The water and / or primer is preferably stored in a water and / or primer tank mounted on a work vehicle and supplied from the tank to each spraying device. The vehicle may be made to follow the work vehicle, and the work may be performed while receiving the supply of water and / or primer from the supply vehicle as needed. In addition, if the spray width of the auxiliary material, water and / or primer also changes in conjunction with the spray width of the aggregate and the binder, the construction width can be changed with a single operation, which is convenient. It is. Further, by mounting a heating means behind the aggregate spraying device and heating the road surface immediately after the aggregate spraying, the decomposition of the binder is accelerated, and a stronger surface treatment layer can be constructed in a short time.

Further, in the present invention, one or two or more binder dispersing devices and aggregate dispersing devices are mounted on the work vehicle, and the work vehicle is connected to the road surface by one pass of the work vehicle. It is possible to spray the material and the aggregate once or twice or more, respectively. In this case, the number of times the binder is sprayed and the number of times the aggregate is sprayed may be the same or different, and the types of the binder and the aggregate to be sprayed differ in the type, particle size, amount of spraying, etc. Or the same.

Hereinafter, the spraying type surface treatment method and the spraying type surface treatment work vehicle of the present invention will be described with reference to the drawings, but it goes without saying that the present invention is not limited to those shown in the drawings.

[0020]

FIG. 1 is an explanatory view showing an example of a spray type surface treatment method of the present invention. In FIG. 1, reference numeral 1 denotes a spray type surface treatment work vehicle of the present invention. A spray nozzle 2 as a binder spraying device and an aggregate bin (bin) 3 as an aggregate spraying device form a front wheel 4a and a rear wheel 4b of the working vehicle 1 in this order from the front of the working vehicle 1. It is provided between them.

A plurality of spray nozzles 2 are provided in the width direction of the working vehicle 1 via a spray bar 5, and a required amount of binder is supplied from a binder tank 6 via a binder transport pump 7. It is being supplied. Reference numeral 8 denotes an air vent for the binder tank 6. In the case of FIG. 1, the binder tank 6 is mounted on the work vehicle 1, but a binder supply vehicle (not shown) is positioned behind the work vehicle 1, and for example, the carry-in socket 9 and the like are connected from the binder supply vehicle. The work may be advanced while receiving the supply of the binder through the intermediary. At this time, the work vehicle 1 may be provided with a binder tank, or may not be provided.

The amount of the binder to be sprayed can be adjusted by adjusting the opening degree of a valve provided in each spray nozzle 2 or adjusting the opening degree of a valve (not shown) provided in a pipe line, or It can be changed by increasing or decreasing the rotation speed of the transport pump 7. Further, the spread width of the binder can be adjusted by opening and closing the individual spray nozzles 2. Thereby, even if the properties of the road surface, the speed of the work vehicle 1, and the like change, it is possible to always spray the optimum amount of the binder. The amount of the binder to be sprayed may be manually adjusted, or automatically changes in conjunction with the speed of the work vehicle 1, for example, by changing the rotation speed of the pump 7 for transporting the binder. You may do it. In addition, the spraying device of the binder is not limited to the spray nozzle 2,
Any means may be used as long as a predetermined amount of the binder can be supplied on the road surface. For example, when using a low-viscosity binder, it may be allowed to simply flow down to the road surface from a linear opening or an appropriately distributed point-like opening, or by applying with a roller or the like. Is also good.

Examples of the binder include bituminous materials and other materials capable of bonding the road surface and the aggregate, including those used in the conventional spray-type surface treatment method.
Any material can be used. Typically, a modified heated asphalt or a modified asphalt emulsion is used, but the invention is not limited to these. The amount of the binder to be sprayed may be the same as that in the conventional spray-type surface treatment method, but is typically 0.5 to 2.5 (l / m ² ).
Degree, and preferably about 0.7 to 1.5 (l / m ² ).

Reference numeral 10 denotes a pump for an oil heater for keeping the temperature of the tank or pipe in which the binder stays or passes, including the spray bar 5 and the spray nozzle 2, in the work vehicle 1. Oil circulation pump. As a result, the binder is spray nozzle 2
The binder is kept at a constant temperature until it is sprayed, so that a predetermined property is maintained. In addition, since the heating and heat retaining means including the spray nozzle 2 is provided in this way, for example, the remaining binder solidifies in the tank and other pipeline portions, the spray bar, and further in the spray nozzle 2, There is no clogging of such conduits and nozzles. The means for keeping the binder warm is not limited to the oil heater shown, but may be a hot air generating means or the like.

On the other hand, the aggregate is sprayed from the aggregate bin 3.
The aggregate bin 3 has, for example, a shape as shown in an enlarged manner in FIG. 2, reference numeral 11 denotes an aggregate spray amount control door, and reference numeral 12 denotes an operation lever thereof, and an aggregate spray width indicated by reference numeral 13. The opening degree of the aggregate outlet 14 is adjusted in cooperation with the adjustment door. Reference numeral 15 denotes an aggregate discharge roll as an aggregate discharge means. The aggregate spraying amount adjusting door 11 can be moved up and down by a rack and pinion mechanism in accordance with the operation of the operation lever 12, and the length of the aggregate discharge port 14 in the direction orthogonal to the width direction of the work vehicle 1. Adjust The degree of opening and closing of the aggregate spray amount adjusting door 11 can be adjusted from the driver's seat of the work vehicle 1 by operating a panel (not shown) in accordance with a panel operation or a predetermined program. The basic amount of the aggregate discharged from the aggregate discharge port 14 is determined by the degree of opening and closing of the aggregate spray amount control door 11.

On the other hand, the aggregate-spreading width adjusting door 13 has a cylindrical shape as shown in FIG. 3, and a part of the cylindrical shape is cut off in a straight line or a curve. Therefore, by rotating the aggregate dispersion width adjusting door 13, the aggregate discharge port 14 is controlled.
The opening length of the working vehicle 1 in the width direction changes, and the scatter width of the aggregate is adjusted. The rotation angle of the aggregate-spreading width adjusting door 13 can be manually adjusted by operating a lever (not shown), and similarly to the aggregate-spreading amount adjusting door 11, panel operation can be performed from the driver's seat of the work vehicle 1. Alternatively, it can be adjusted by driving the driving means according to a predetermined program.
Also, if an angle scale indicating the rotation position or an aggregate scatter width scale indicating the rotational position converted to the aggregate scatter width is provided on the side surface of the aggregate scatter width adjusting door 13, the aggregate of the aggregate at that time is provided. It is convenient to know the spray width. It should be noted that the aggregate-spreading width adjusting door 13 is not limited to a cylindrical one and may be, for example, as shown in FIG.
As shown in FIG. 5, an aggregate scatter width adjusting door 13 in which a plate is cut out with a straight line or a curve may be used. It will move up and down in parallel with the material spray amount adjustment door 11.

It is preferable that the scatter width of the aggregate is changed in conjunction with the change of the scatter width of the binder. In the work vehicle of the present invention, since the dispersing device for the binder and the dispersing device for the aggregate are provided in the same vehicle,
Linking the scatter width of the binder and the aggregate can be easily performed. Since the spray widths of both are interlocked, in the work vehicle of the present invention, the aggregate is sprayed on the road surface where the binder is not sprayed, or the aggregate is spread even though the binder is sprayed. There is no risk of inconvenience such as not being sprayed. This is particularly effective when the width of the construction must be continuously changed during construction.

The discharge and dispersion of the aggregate from the aggregate bin 3 are basically performed by the above-mentioned aggregate-spray-amount adjusting door 11 and the aggregate-spray-width adjusting door 1.
3 is possible, but if it is desired to perform finer aggregate discharge control according to the traveling speed of the work vehicle 1, for example, an aggregate discharge means such as an aggregate discharge roll 15 is provided. It is desirable. The aggregate discharge roll 15 has a surface made of rubber, synthetic resin, metal, or the like, and continuously rotates the aggregate from the aggregate discharge port 14 by rotating in the arrow direction shown in FIG. 2 or FIG. Discharge and spray. The surface of the discharge roll 15 may be slightly uneven, or the surface may be covered with a net cloth made of rubber, synthetic resin, metal, or the like. By changing the rotation speed of the aggregate discharge roll 15, the discharge speed of the aggregate can be adjusted. The rotation speed of the aggregate discharge roll 15 can be changed according to, for example, the speed of the work vehicle 1. For example, a fixed amount of aggregate can always be sprayed on the road surface regardless of the speed of the work vehicle 1. Although the aggregate discharge roll 15 has a circular cross section in FIGS. 2 and 3, it may have an oval or polygonal cross section. Further, the present invention is not limited to the roll type, and a belt conveyor type aggregate discharging means may be provided.

The aggregate outlet 14 is at a distance of at most 50 from the road surface.
cm or less, preferably 30 cm or less, more preferably 2 cm or less.
0 cm or less, and the aggregate is discharged to the aggregate outlet 1
Even when spraying from 4 on the road surface, the aggregates bounce on the road surface,
There is no risk of splattering or rolling and splattering outside the construction width. The entire aggregate bin 3 can be provided so as to be movable up and down, or alternatively, the aggregate bin 3 can be moved forward and backward of the work vehicle so that the distance between the aggregate bin 3 and the binder dispersing device can be changed. It is also possible to Further, the aggregate bin 3 is provided with a heating and heat keeping means (not shown) so that the aggregate inside can be heated or kept warm as needed.

Returning to FIG. 1 again, the aggregate is put on the rear wheel mounting table 16 provided at the front of the work vehicle 1 with the rear wheel of the aggregate supply vehicle 17 mounted thereon, and is temporarily integrated with the work vehicle 1. The aggregate is supplied directly to the aggregate bin 3 from the aggregate supply vehicle 17. Thus, in the work vehicle of the present invention, the rear wheel of the aggregate supply vehicle 17 is mounted on the rear wheel mounting table 16 provided in the front part of the work vehicle 1,
Since the two vehicles are temporarily connected, by moving the work vehicle 1 forward, the aggregate supply vehicle 17 also moves forward, so that the relationship between the two vehicles is not separated, and stable supply of the aggregate is always possible. is there. In addition, since the aggregate can be supplied directly from the aggregate supply vehicle 17 to the aggregate bin 3 without any intermediary means or the like, the structure of the working vehicle is extremely simple. Note that, without providing the rear wheel mounting table 16, the aggregate supply vehicle 17 is positioned in front of the work vehicle 1, and the aggregate supply vehicle 17 is pushed by a push roller (not shown) or the like.
Needless to say, the aggregate may be supplied.

FIG. 5 is a top view of a part of the work vehicle 1 of FIG. As shown in FIG. 5, a screw conveyor 18 is provided in the aggregate bin 3. By rotating the screw conveyor 18, the aggregate in the aggregate bin 3 is transported in the width direction of the work vehicle 1. The distribution of the aggregate in the aggregate bin 3 is made uniform. After the distribution of the aggregate is uniform in the width direction of the work vehicle 1 in the aggregate bin 3 as described above, the aggregate is sprayed with a predetermined width and a predetermined amount from the aggregate discharge port toward the road surface. The aggregate bin 3 is provided with a vibration imparting device (not shown), and by appropriately imparting vibration to the aggregate bin 3, uniform distribution of the aggregate, prevention of agglomeration of the aggregate, Can be discharged smoothly. 1
9 is a connecting arm, for example, penetrating the aggregate bin 3;
The front part and the rear part of the work vehicle 1 are connected. In addition. The connecting arm 19 does not necessarily need to penetrate the aggregate bin 3,
The upper part of the aggregate bin 3 may be passed. The pipe between the spray bar 5 and the like and the rear of the work vehicle 1 is connected to the connecting arm 1
Passing under 9

The aggregate to be used is not particularly limited as long as it can be used for the spraying surface treatment method, and any aggregate may be used, but the particle size is desirably a single particle size.

For example, as shown in FIG. 6, a plurality of spray nozzles 2 of the binder are provided in the width direction of the work vehicle 1 via spray bars 5 provided in the width direction of the work vehicle 1. . Each of the spray nozzles 2a, 2b,... Is provided with a valve 20a, 20b,.
By opening and closing these valves 20a, 20b,...
The spraying of the binder from the spray nozzles 2a, 2b,... Can be started or stopped. In the example of FIG. 6, the valve 20a ₁ through 20a ₄ provided on the spray nozzle 2a ₁ to 2A region ₄ of the left half in FIG. 6 is connected to the operating punch 21, in accordance with the operation of the air cylinder 22, Opening or closing operations are performed simultaneously. On the other hand, FIG.
The middle right half spray nozzles 2b, 2c,... Can individually and independently control the operation of the valves 20b, 20c,. The means for driving the cylinders and valves is not limited to air only, and other means such as hydraulic pressure or electromagnetic force may be used. Since such configuration, for example, by manipulating the control panel installed in the driver's seat of the working vehicle 1, or according to a predetermined program, it actuates the air cylinder 22, the valve 20a ₁ through 20a ₄ open all at once, spray nozzle 2
From a _{1 to} 2a ₄ , the binder can be sprayed on a portion of the road surface having a predetermined width. The spray width is displayed on the control panel in real time. If the spray width is to be increased, only the necessary valves 20b or 20f are actuated by air pressure,
The binder may be sprayed from the spray nozzles 2b or 2f. In the case of this figure, the spray nozzle 2a ₁ to 2A region ₄ located on the left half of the work vehicle 1
Was such that the opening and closing operation together with, may also be capable of opening and closing all of the spray nozzle 2a ₁ ~2f individually may be changed the number of spray nozzles opened and closed in unison. In the illustrated example, a valve that operates by air pressure is shown, but a valve that operates electromagnetically may be used. Although the amount of the binder sprayed from each spray nozzle may be adjusted by adjusting the opening degree of the valve 20, another means such as a valve is separately provided upstream of the spray bar 5, and the It is preferable to adjust the opening degree of the valve.

In FIG. 1, reference numeral 23 denotes a spray nozzle which is a spraying device for the auxiliary material, and a spray nozzle 2 for the binder.
Similarly, a plurality of work bars 1 are provided in the width direction of the work vehicle 1 via the spray bar 24. Auxiliary spray bar 24
The auxiliary material is supplied from the auxiliary material tank 30 by a pumping means such as a pump (not shown). The auxiliary material may be supplied at any time from a subsequent supply vehicle, similarly to the binder. The spraying amount of the auxiliary material can be adjusted by adjusting the opening degree of the valve provided in each spray nozzle 23 or the valve provided in the pipeline, while the spraying width is controlled by each spray nozzle 23. Although it can be adjusted by opening and closing the provided valve, usually, the auxiliary material is always used as a pair with the binder, so that the spray nozzle 23 is used.
It is preferable that the amount and width of the auxiliary material sprayed from the nozzle be changed in conjunction with the amount and width of the binder sprayed from the spray nozzle 2.

As shown in FIG. 1, the auxiliary material spray nozzle 23 is provided in the vicinity of the binder spray nozzle 2, for example, the binder sprayed from the spray nozzle 2 and the auxiliary spray sprayed from the spray nozzle 23. It is provided at an angle such that the material is mixed in the air. Alternatively, a spray nozzle of a multi-headed gun capable of simultaneously spraying a plurality of materials may be used, or the mixture may be sprayed after mixing the binder and the auxiliary material immediately before spraying from the spray nozzle. As described above, it is desirable that the auxiliary material is sprayed together with the binder in the air so that the two are mixed together. However, when mixing is performed very quickly, the auxiliary material is sprayed immediately before or immediately after the binder is sprayed. You may do it. In the illustrated case, the spray nozzle 23 is located at a position behind the spray nozzle 2 in the vehicle, but the spray nozzle 23 may be located in front of the spray nozzle 2 in the vehicle. The auxiliary material is used to adjust the properties of the binder, and includes, for example, a solidification accelerator or a decomposition accelerator for the binder, but is not limited to these. Absent.

In FIG. 1, reference numeral 25 denotes a nozzle for spraying water or primer, and a plurality of nozzles are provided in the width direction of the working vehicle 1 via a spray bar 26. Water, for example, when asphalt emulsion is used as a binder, is sprayed to enhance the adhesion and conformability between the asphalt emulsion and the road surface, and also has the effect of lowering the elevated road surface temperature in summer. On the other hand, the primer is used, for example, when using heated asphalt as a binder, and has the effect of enhancing the adhesion and conformability between the heated asphalt and the road surface. These water or primers are stored in a dedicated tank indicated by 31 and are appropriately selected and used, but in some cases, a water or primer supply vehicle is made to follow,
You may make it scatter while receiving supply suitably from a supply vehicle.

Reference numeral 27 denotes a heating device, which can be easily attached to and detached from the aggregate bin 3 behind, in the case of FIG. This heating device 27
Thereby, the road surface after the aggregate is scattered is heated, the decomposition or solidification of the binder is accelerated, and a stronger surface treatment layer can be constructed in a short time. 28 is a work step,
Reference numeral 29 denotes a heating energy source, such as a propane gas cylinder, a heavy oil tank, or a generator.

The spray type surface treatment layer according to the method of the present invention comprises:
For example, it is constructed as shown in FIG. That is, after the road surface 101 is cleaned as necessary with a road sweeper or the like (not shown), while the work vehicle 1 of the present invention is advanced in the forward direction together with the aggregate supply vehicle and / or the binder supply vehicle,
Water or the primer 32 is sprayed from the nozzle 25, and subsequently, the binder 33 is sprayed from the spray nozzle 2. At the same time, the auxiliary material 34 is sprayed from the spray nozzle 23, mixed with the binder 33 in the air, and the binder 3 is placed on the road surface 101.
A layer of a mixture of 3 and the auxiliary material 34 is formed in a film shape. Subsequently, the aggregate 35 is sprayed from the aggregate bin 3 into one layer on the layer of the mixture of the binder 33 and the auxiliary material 34.

Here, it is important that the spray nozzle 2 for spraying the binder 33 and the aggregate bin 3 for spraying the aggregate 35 are attached to the same work vehicle 1. Since the spray nozzle 2 and the aggregate bin 3 are attached to the same vehicle, the aggregate 35 can be sprayed immediately after the binder 33 is sprayed. Usually, since the distance between the spray nozzle 2 and the aggregate bin 3 is constant, as long as the working vehicle 1 moves forward at a constant speed, the time from the application of the binder 33 to the application of the aggregate 35 is constant. It is. Therefore, the properties of the binder 33 immediately before the aggregate 35 is sprayed are constant, and uniform and reliable adhesion between the binder 33 and the aggregate 35 is realized.
The time from the application of the bonding material 33 to the application of the aggregate 35 may be any number of seconds as long as it is within a certain short time, preferably within a certain short time, and is constant. Considering work efficiency, it is usually within 10 seconds, preferably within 6 seconds, and more preferably within 3 seconds. It goes without saying that the optimum time is appropriately determined according to the degree of damage to the road surface, the line shape at the site, and the like.

In the above example, the distance between the spray nozzle 2 and the aggregate bin 3 is kept constant, and the work vehicle 1 is moved forward at a constant speed. However, it is difficult to keep the speed of the work vehicle 1 constant. In such a case, the distance between the spray nozzle 2 and the aggregate bin 3 may be changed according to the speed of the work vehicle 1. That is, when the speed of the work vehicle 1 is reduced, the distance between the spray nozzle 2 and the aggregate bin 3 is reduced, and conversely, the work vehicle 1
Spray nozzle 2 and aggregate bin 3
, The time from the sprinkling of the binder 33 to the sprinkling of the aggregate 35 can always be kept constant. Alternatively, the angle of the spray nozzle 2 with respect to the road surface may be changed according to the speed of the work vehicle 1. In addition, when the interval between the application of the binder and the application of the aggregate is set within a predetermined time, the speed of the work vehicle may slightly vary.

The amount of water or primer, binder, auxiliary material and aggregate to be sprayed can be controlled collectively on a control panel provided in the driver's seat of the working vehicle 1, for example. It can be appropriately set and changed according to the temperature, the type of the binder and the auxiliary material, the type of the aggregate, the particle size, and the like. In addition, it is also possible to automatically control the value once set. For example, when the speed of the work vehicle changes, the vehicle speed of the work vehicle is detected, and a constant It is also possible to vary the application rate so that the binder, auxiliary or aggregate is applied.

Further, the spray width can be changed at any time.
It is also possible to specify the spray width on the control panel, or to set and change it appropriately using a control box as shown in FIG. That is, in FIG.
a, 36b,... correspond to the individual sections of the scatter width, and each operation key becomes effective when rotated by a predetermined angle from the position shown in FIG. Spraying will begin. Which of the operation keys is valid is determined by using the fact that the operation keys 36a, 36b,... Have different lengths, by moving the spray width control bar 37 to an appropriate position indicated by the arrow direction, This is done by engaging a selected actuation key. Numeral 38 denotes a scatter width control pin, which is a pin for fixing the scatter width control bar 37.
When the selection of the operation key is completed, by pulling the start lever 39 toward the brake lever 40, the operation keys that are selected and engaged with the spray width control bar 37 are simultaneously rotated and activated, and the selected operation key is activated. Spreading is started for the corresponding spray width. In order to stop the spraying, the brake lever 40 is tilted toward the start lever 39, and the operation key is rotated to the original state.

The amount of spraying, the width of spraying, and the working state of the work vehicle are monitored on a control panel in real time, and are appropriately stored or recorded. In the working vehicle 1 according to the present invention, water or the primer 32 is sprayed, the bonding material 33 and the auxiliary material 34 are sprayed, and the aggregate is sprayed so that the bonding material 33 and the aggregate 35 are sprayed to the construction site without any excess or shortage. The spraying of 35 is started with a predetermined time difference according to the speed of the work vehicle 1, and is ended with a predetermined time difference. A remote control device (not shown) may be attached to the work vehicle 1 so that the worker can remotely control the entire work including the forward speed and the course of the work vehicle 1 while watching the work status. good.

In the above-described example, only one row of spray nozzles serving as a binder dispersing device is provided in the width direction of the work vehicle 1, and only one aggregate bin serving as an aggregate dispersing device is provided. However, the dispersing device for the binder and the dispersing device for the aggregate are:
More than one may be provided. For example, between the front wheel 4 a and the rear wheel 4 b of the work vehicle 1, two or more sets of a row of binder spray nozzles and an aggregate bin are provided and provided by one pass of the work vehicle 1. It is also possible to construct a plurality of spray-type surface treatment layers on the road surface at one time, and to provide two or more aggregate bins for one row of spray nozzles for the binder so that the particle size differs. Two types of aggregate may be successively sprayed to form a spray-type surface treatment layer. Further, conversely, two or more rows of binder spray nozzles may be provided for one aggregate bin so that a different or large amount of binder can be sprayed.
The binders and aggregates sprinkled from the respective binder and aggregate dispersers can be the same or different, so that the desired binders and aggregates are present on the road surface. And can be sprayed in any order.
In addition, it is not always necessary to always use all of the plurality of provided binder dispersing devices and aggregate dispersing devices, and it is a matter of course that only necessary ones may be used.

The spraying type surface treatment method and the spraying type surface treatment vehicle of the present invention are mainly used for repairing existing pavements, but the present invention is not limited to repairing. Use colored aggregates to build colored surface layers on existing or new pavements,
Alternatively, light-reflective aggregates can be used to build a light-reflective surface layer on existing or new pavements. According to the spraying type surface treatment method and the spraying type surface treatment work vehicle of the present invention, a simple operation, continuously and efficiently,
The surface layer composed of the binder and the aggregate can be constructed at low cost.

Hereinafter, the present invention will be further described with reference to Examples and Comparative Examples.

(Embodiment 1) Using the work vehicle shown in FIG. 1, the rear wheel of the aggregate supply vehicle is placed on the rear wheel mounting table of the work vehicle, and the work vehicle is moved forward with both vehicles integrated. The spray type surface treatment method of the present invention was implemented. Prior to construction, the road surface was cleaned with a road sweeper, and then the integrated aggregate supply vehicle and the work vehicle of the present invention were advanced at a constant speed of 30 m / min. Since the distance between the spray nozzle for the binder and the aggregate bin was about 1 m, the time between the application of the binder and the application of the aggregate was about 2 seconds. After the work vehicle, rolling was performed using an iron wheel roller and a tire roller in combination, and finally the floating stones were removed by a road sweeper. The road surface temperature during construction was 8 ° C, and the air temperature was 14 ° C.

The materials used are as follows. <Binder> Binder: Gumphalt S (heated asphalt, manufactured by Nichireki Co., Ltd.) Spraying temperature: 160 ° C. Spraying amount: 0.97 (l / m ² ) <Aggregate> Aggregate: No. 6 crushed stone (Kuzu, Tochigi Prefecture) Production) Spraying temperature: 150 ° C Spraying amount: 0.01 (m ³ / m ² ) <Auxiliary material> None <Primer> None

Table 1 shows the properties of the binder used.

[0050]

[Table 1]

(Example 2) The same working vehicle and aggregate supply vehicle were used, but the forward speed was variously changed while the distance between the spray nozzle for supplying the binder and the aggregate bin was kept constant. The time from when the material is scattered to when the aggregate is scattered is within about 10 seconds and within a certain time, except that it is changed randomly between them, in the same manner as in Example 1, A surface treatment layer was constructed on a road surface continuous with that of Example 1.

(Comparative Example 1) In the procedure of the conventional method shown in FIG. 9, after asphalt was sprayed with an asphalt distributor, a dump truck, which is an aggregate sprayer, was moved backward to disperse the binder. Except that the time until the material was sprayed was changed randomly from about 1 minute to about 3 minutes, using the same material as in Example 1 and continuing in the same manner as in Example 2 A surface treatment layer was constructed on the road surface. Even at the longest time interval, the binder remained liquid as long as it was visually observed and the tactile sensation of a driver or spatula was examined.

After curing for one day and night, a heavy load was loaded on a large test vehicle, and the test was carried out at a speed of 30 km / h on the surface treatment layer constructed in Example 1, Example 2, and Comparative Example 1. After running repeatedly, the state of each surface treatment layer was examined after 10 hours.

As a result, the scattering of the aggregate was hardly found in the section of Example 1, whereas the scattering of the aggregate was slightly observed in the rut of the test vehicle in the section of Example 2. Was seen. On the other hand, in the section of Comparative Example 1, scattered traces of the aggregate were observed in the rut of the test vehicle.

An attempt was made to peel off the aggregate at the tip of the driver. However, in the sections of Example 1 and Example 2, it was difficult to peel off the aggregate at all places. In some sections, there was a place where the aggregate could be peeled off relatively easily. This is consistent with the result that a large number of scattered traces of the aggregate due to the passage of the vehicle were found in the section of Comparative Example 1, indicating that there is a place where the bonding force between the road surface and the aggregate is insufficient. . Further, in the section of the second embodiment, as in the section of the first embodiment, although it was difficult to remove the aggregate, it was slightly in the section of the second embodiment depending on the passage of the test vehicle. The traces of aggregates were observed, although the bonding force between the aggregate and the road surface itself was not insufficient, but the time between the application of the aggregate and the application of the aggregate fluctuated. It is presumed that a portion where the bonding force was not uniform occurred, and therefore, when passing through the vehicle, the vehicle load was concentrated on the portion where the bonding force was weak, and the aggregate was scattered.

(Example 3, Example 4, Comparative Example 2) Instead of Gumphalt S, SP cations (room temperature asphalt emulsion, manufactured by Nichireki Co., Ltd.) was used as a binder. Spraying temperature: 15 ° C. Spraying amount Example 3, Example 4 and Comparative Example 1 in the same manner as in Example 1, Example 2 and Comparative Example 1 except that the spraying temperature of the aggregate was 15 ° C. and 1.32 (l / m ² ). A surface treatment layer of Comparative Example 2 was constructed.
The road surface temperature during construction was 51 ° C, and the air temperature was 28 ° C. Table 2 shows the properties of SP cation used as the binder.

[0057]

[Table 2]

After curing for one day and night, a heavy load is loaded on a large test vehicle, and the surface treatment layer constructed by the above-described Examples 3, 4 and Comparative Example 2 was applied at a speed of 30 km / h per hour. After running repeatedly, the state of each surface treatment layer was examined after 10 hours.

As a result, the scattering of the aggregate was hardly found in the section of the third embodiment, while the scattering of the aggregate was slightly found in the rut of the test vehicle in the section of the fourth embodiment. Was seen. On the other hand, in the section of Comparative Example 2, a rather large amount of aggregate scattered traces were observed in the rut of the test vehicle.

An attempt was made to peel off the aggregate at the tip of the driver, but in the sections of Examples 3 and 4, it was somewhat difficult to peel off the aggregate in all places. In section 2, there were places where the aggregate could be peeled off relatively easily. This is consistent with the result that a large number of scattered traces of the aggregate due to the passage of the vehicle were found in the section of Comparative Example 2, which indicates that there is a place where the bonding force between the road surface and the aggregate is insufficient. . On the other hand, in the section of Example 4, similar to the section of Example 3, although the peeling of the aggregate was somewhat difficult, the trace of scattering of the aggregate by the passage of the test vehicle was slight, though slightly. It was found that the bonding force between the aggregate and the road surface was not insufficient, but the bonding force between the aggregate and the road surface was not uniform because the time from the application of the binder to the application of the aggregate fluctuated. It is presumed that the vehicle load was concentrated on a portion where the bonding force was weak when the vehicle passed, and the aggregate was scattered.

[0061]

As described above, according to the spraying type surface treatment method and the spraying type surface treatment work vehicle of the present invention, a uniform and durable surface treatment layer can be formed while moving the vehicle in the forward direction. It is possible to construct easily and efficiently. In addition, since the binder sprayer and aggregate sprayer are mounted on a single vehicle, it is possible to link the binder spray and aggregate sprayer with each other and manage them as a consistent process. Therefore, the time interval from the application of the binder to the application of the aggregate can be set within a short period of time or a short period of time, as well as the change of the application width, the start and end timings of application. It becomes possible.

Further, according to the present invention, the aggregate can be directly supplied from the aggregate supply vehicle to the aggregate bin, which is an aggregate dispersing device, so that there is no need to provide aggregate transport means in the working vehicle. In addition, the structure of the working vehicle can be significantly simplified.
The work vehicle and the aggregate supply vehicle can be temporarily connected and integrated by placing the rear wheel of the aggregate supply vehicle on the rear wheel mounting table of the work vehicle. The aggregate supply vehicle can also be moved forward integrally, and the aggregate can always be stably supplied to the aggregate bin as the aggregate dispersion device. Further, the binder may be provided with a binder tank in the work vehicle, or may be supplied from a binder supply vehicle subsequent to the work vehicle. Can be continuously scattered and constructed while receiving a stable supply of aggregate from, so that a uniform surface treatment layer can be efficiently constructed without interruption even in a long construction section. INDUSTRIAL APPLICABILITY The present invention can be used not only for the construction of a surface treatment layer for repair, but also for the construction of a surface layer composed of a binder and an aggregate on all pavements regardless of existing or new construction, which is extremely convenient. And it is a useful invention.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a work vehicle according to the present invention.

FIG. 2 is an enlarged view of an aggregate bin.

FIG. 3 is an explanatory diagram of an aggregate bin.

FIG. 4 is a view showing another example of a spray width adjusting door.

FIG. 5 is a plan view of a part of the work vehicle.

FIG. 6 is a view showing an example of a spray nozzle for a binder.

FIG. 7 is a diagram showing an example of the construction of a surface layer by the method of the present invention.

FIG. 8 is a diagram showing an example of a control box for changing the setting of the spray width.

FIG. 9 is a view showing a conventional method.

[Description of Signs] 1 Work vehicle 2, 23, 25 Spray nozzle 3 Aggregate bin 4a, 4b Front and rear wheels of work vehicle 5, 24, 26 Spray bar 6 Binder tank 7 Binder transport pump 8 Air vent 9 Binder Loading socket 10 Circulation pump for oil heater 11 Aggregate spray amount adjustment door 12 Operating lever 13 Aggregate spray width adjustment door 14 Aggregate discharge port 15 Aggregate discharge roll 16 Rear wheel mounting table 17 Binder supply vehicle 18 Screw conveyor 19 Connecting arm 20 Valve 21 Operating punch 22 Air cylinder 27 Heating device 28 Working step 29 Heating energy source 30 Auxiliary material tank 31 Water or primer tank 32 Water / primer 33 Binder 34 Auxiliary material 35 Aggregate 36 Operating key 37 Spreading width Control bar 38 Spread width control pin 39 Start lever 40 Braking level Over 101 road 102 Road sweeper 103 asphalt distributor 104 dump truck 105 Roller

Claims (19)

[Claims] 1. A work vehicle equipped with a binder dispersing device and an aggregate dispersing device between a front wheel and a rear wheel of a vehicle in this order from a position closer to the front of the vehicle, and moving the work vehicle forward on a road surface. A spraying type surface treatment method in which a binder and an aggregate are sprayed in this order. 2. The spray-type surface treatment method according to claim 1, wherein the aggregate is sprayed at a substantially constant time interval after spraying the binder. 3. The scatterer according to claim 1, wherein the aggregate scatterer has an aggregate bin, and the aggregate is scattered in the aggregate bin after being homogenized in the width direction of the working vehicle. Type surface treatment method. 4. The spraying type surface treatment method according to claim 1, wherein the work vehicle further includes an auxiliary material spraying device, and the auxiliary material is sprayed simultaneously with or before and after the spraying of the binder. 5. The sprayer according to claim 1, wherein the work vehicle further comprises a water and / or primer sprayer, and sprays the binder after spraying the water or the primer on the road surface. Type surface treatment method. 6. The spraying type surface treatment method according to claim 1, wherein the spraying width of the binder and the spraying width of the aggregate are changed in conjunction with each other. 7. An aggregate supply vehicle is located in front of the work vehicle,
The spraying surface treatment method according to claim 1, 2, 3, 4, 5, or 6, wherein the work is continuously performed while supplying the aggregate from the aggregate supply vehicle to the work vehicle as needed. 8. The spray-type surface treatment method according to claim 7, wherein the aggregate supply vehicle supplies the aggregate to the work vehicle with the rear wheel placed on the front portion of the work vehicle. 9. The work is continuously performed while a binder supply vehicle is positioned behind the work vehicle, and the binder is supplied from the binder supply vehicle to the work vehicle as needed. 4,
A spraying type surface treatment method according to 5, 6, 7 or 8. 10. The binder dispersing device and the aggregate dispersing device,
Each of the work vehicles is provided with one or two or more, and when passing through the work vehicle, the dispersion of the binder and the dispersion of the aggregate are performed,
Claims 1, 2, 3, 4, each of which is performed once or twice or more.
A spray-type surface treatment method according to 5, 6, 7, 8 or 9. 11. A binder spraying device and an aggregate spraying device,
A spray-type surface treatment work vehicle provided between a front wheel and a rear wheel of the vehicle in this order from the front of the vehicle. 12. An aggregate dispersing device, comprising: an aggregate bin provided with an aggregate discharge port capable of adjusting a discharge amount and / or a discharge width, wherein the received aggregate is uniformly distributed in a width direction of a work vehicle. The spray-type surface treatment work vehicle according to claim 11, further comprising an aggregate bin provided with a unit for converting the surface treatment. 13. The spraying type surface treatment work vehicle according to claim 11, further comprising an auxiliary material spraying device near the binder spraying device. 14. A water and / or primer spraying device is provided in front of the vehicle with respect to the binder spraying device.
The spraying type surface treatment work vehicle according to 1, 12, or 13. 15. The spraying type surface treatment work vehicle according to claim 11, further comprising a road surface heating means behind the aggregate spraying device. 16. The spray-type surface treatment vehicle according to claim 11, further comprising a binder tank and / or a water tank and / or a primer tank and / or an auxiliary tank. 17. The apparatus according to claim 11, wherein the scatter width of the binder and the scatter width of the aggregate are changeable in conjunction with each other.
The spraying type surface treatment work vehicle according to 14, 15, or 16. 18. The vehicle according to claim 11, further comprising a rear wheel mounting portion at a front portion thereof.
A spraying type surface treatment work vehicle according to claim 1. 19. A binder dispersing device and an aggregate dispersing device,
A vehicle according to claim 11, 12, 13, 14, 15, 16, 16, 1 or 2 provided between the front wheel and the rear wheel.
The spraying type surface treatment work vehicle according to 7 or 18.