JP3412068B2 - Scattering type surface treatment vehicle - Google Patents

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 work vehicle, and more particularly, to a spray type surface treatment layer having excellent durability by consistently spraying a binder and an aggregate. The present invention relates to a new spray type surface treatment work vehicle that can be constructed.

[0002]

2. Description of the Related Art Road pavement is
It may be gradually aged and deteriorated, and the road surface may be worn to form irregularities, or cracks may be generated on the pavement surface. As a method for repairing such aged or deteriorated road pavement, two surface treatment methods, a mixed type surface treatment method and a spray type surface treatment method, have been proposed.

Among them, the mixed surface treatment method is a method in which an asphalt mixture produced by mixing asphalt and aggregate in a plant is conveyed to a construction site and paved on an aged or deteriorated road surface, thereby producing unevenness or unevenness. This is a method of repairing cracks and the like. Since the asphalt mixture is laid on the road surface, it is basically a pavement extension, and although it is a repairing method, it is a surface treatment method that requires almost the same steps as a normal pavement building step.

On the other hand, the spray-type surface treatment method is a simpler method, in which a bituminous material such as asphalt is sprayed in a film shape on an aged or deteriorated road surface, and then an aggregate is simply applied thereon. This is a very simple construction method in which the aggregate is sprinkled on the layers, the aggregate is bonded to the road surface by the bituminous material, and a layer composed of the bituminous material and the single-layer aggregate is constructed on the road surface. That is, in the spray-type surface treatment method, instead of paving the asphalt mixture, the aggregate is simply dispersed, and the dispersed aggregate is bonded to the road surface by the bituminous material that acts as a binder, and the aggregate single layer The surface treatment layer of is constructed.

Conventionally, the spraying type surface treatment method is typically performed by a method as shown in FIG. That is, in FIG. 16, the road sweeper 102 is first cleaned in the direction indicated by the arrow on the road surface 101 to be surface-treated, and then the asphalt distributor 10 is cleaned.
3 advances, and asphalt as a binder is sprayed on the road surface 101. Next, the truck 104 on which the aggregate is mounted
While tilting the loading platform and spraying the aggregate on the asphalt layer from the rear, the vehicle advances in the direction of the arrow, that is, as a vehicle in reverse. This is to prevent the tires of the truck 104 from stepping on the already spread asphalt layer. When the tire of the truck 104 passes over the asphalt layer, the asphalt layer in that portion adheres to the tire of the truck and becomes thin, not only weakening the bonding force between the road surface and the aggregate, but also the tire of the truck 104. This is because the adhered asphalt causes a problem such as marking the asphalt on the road surface when the truck travels on another road as it is. Then, the dispersed aggregate is rolled by the roller 105, and the load sweeper 102 passes again to remove excess aggregate and the like from the treated layer surface, and the work is completed.

[0006] Conventionally, as described above, asphalt spraying as a binding material and aggregate spraying are carried out by using different vehicles,
Since they are performed as separate steps, there is a problem in that work efficiency is poor, such as it is difficult to cooperate with each other, and the aggregate cannot be sprayed immediately after the binder is sprayed. Further, since the truck 104 on which the aggregate is mounted has to move forward in a backward traveling state, the truck 104 may be slightly moved.
Meanders and cannot disperse the aggregate properly on the sprinkled binder, and further, since the aggregate is sprinkled from a relatively high position of the truck 104, the dropped aggregate does not bounce on the road surface, or There was a problem of rolling and scattering outside the planned spreading width. Moreover, due to such poor work efficiency, the constructed spray-type surface treatment layer generally lacks in durability, and aggregates scatter in a relatively short time after traffic is opened, and scatter on windshields of oncoming vehicles. It often caused problems such as traffic obstruction and scattering to people along the road. Moreover, the asphalt layer where the aggregate has been scattered is not preferable because it causes vehicle slip and causes a flash phenomenon in the summer. Due to these drawbacks, the spray-type surface treatment method has the advantage that it is simple and relatively inexpensive, but on the other hand, it lacks reliability and has not been used as a repair method so far. It 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 dispersed aggregate is simply bonded to the road surface with a binder, and the cause thereof. The current situation is that it was left alone without being investigated.

[0007]

The present invention has been made in order to solve the various drawbacks of the conventional spraying type surface treatment method and to make the best use of the inherent advantages of the spraying type surface treatment method. It is an object of the present invention to provide a novel spray-type surface treatment work vehicle that enables a spray-type surface treatment layer that is simple, inexpensive, and highly efficient and highly reliable to be constructed.

[0008]

Means for Solving the Problems The inventors of the present invention have conducted extensive research on a spray-type surface treatment method which is highly durable, and as a result, the binder-dispersing means and the aggregate-dispersing means are combined into one work vehicle. By mounting and advancing the work vehicle at least, consistently performing at least the spreading of the binder to the spreading of the aggregate, work efficiency is dramatically increased and the durability of the constructed surface treatment layer is also significantly improved. Then, they have found that the spraying type surface treatment layer can be efficiently constructed in an extremely short time and completed the present invention.

That is, the present invention is a spray type surface treatment work vehicle for spreading at least a binder and an aggregate in this order on the road surface while advancing in the forward direction, and a spray bar for a binder extending in the width direction of the work vehicle. And a plurality of binder spray nozzles attached to the binder spray bar are provided rearward of the rear wheel of the work vehicle, and further to the rear thereof, there are an opening length in the width direction of the work vehicle and a width direction of the work vehicle. It is an object of the present invention to solve the above-mentioned problems by providing a scatter type surface treatment work vehicle including an aggregate bin having an aggregate discharge port capable of freely adjusting the opening length in the orthogonal direction.

According to the present invention, the sprinkling means for the binder and the sprinkling means for the aggregate are provided on one working vehicle and behind the rear wheels, so that the working vehicle can be moved forward and efficiently. It is possible to spray the binder and aggregate on the road surface in this order. Since the tire of the work vehicle does not step on the scattered binder, the binder adheres to the tire and becomes thin, and the bonding force between the road surface and the aggregate is weakened.
No other road surface is contaminated by the binding material attached to the tire. Moreover, since it is possible to perform work while the work vehicle is moving forward, it is easy to control the work vehicle, and the work vehicle meanders unnecessarily and the spraying area fluctuates or the speed fluctuates irregularly. Nor.

In the conventional spraying type surface treatment method, since the asphalt spraying as the binder and the aggregate spraying are performed separately by using different vehicles, the binder spraying and the bone spraying are not performed. The time until the application of the timber was not constant, so that the state of the binder layer at the time when the aggregate was applied was inevitable. That is, the bituminous material 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 being sprayed, but once it is sprayed on the road surface, it is immediately after that. The temperature starts to drop and the water vaporizes, and its properties change from moment to moment. Conventionally, aggregates have been sprayed by visually observing that bituminous materials such as asphalt should be maintained in a liquid or softened state. This is a method that is commonly used when paving an asphalt mixture after spraying a primer, etc., but the aggregate is thoroughly mixed beforehand with the bituminous material such as asphalt, and the aggregate surface is covered with the bituminous material. In the case of the spray-type surface treatment method, unlike the case of the above mixture, the aggregate comes into contact with the bituminous material only after being dispersed.
Therefore, the properties of the bituminous material at the time when the aggregate is sprayed have a great influence on the degree of adhesion between the aggregate and the bituminous material, and even if the liquid or softened state is maintained in appearance, the properties of the bituminous material are If there is a variation, it is considered that the variation directly affects the degree of adhesion between the aggregate and the bituminous material and thus the durability of the surface treatment layer to be constructed. Thus, the finding by the present inventors that the irregular variation in 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. This is the first finding.

When the work vehicle of the present invention is used, the spray nozzle for the binder and the aggregate bin are mounted on the single work vehicle and further behind the vehicle rear wheel, so that one work vehicle is used. By advancing in the forward direction, it is possible to consistently disperse the binder and the aggregate. The spread of aggregate is performed within a substantially constant short time after spraying of the binder, preferably at a short constant time interval after spraying of the binder, resulting in a uniform and durable spray-type surface treatment layer. Can be easily constructed. In order to make the time from the spread of the binder to the spread of the aggregate almost constant, if the distance between the spray nozzle for the binder and the aggregate bin is constant, move the work vehicle at a constant speed. In addition, if the speed of the work vehicle changes, the distance between the spray nozzle for binder and the aggregate bin may be changed according to the speed of the work vehicle. You may change the spraying direction of. By using the work vehicle of the present invention, the properties of the binder at the time when the aggregate is sprayed can be kept substantially constant, and the degree of adhesion between the binder and the aggregate is also substantially constant. As a result, it becomes possible to construct a uniform and highly durable spray-type surface treatment layer. The work vehicle may be a wheel type or a crawler type. In the case of the crawler type, the vehicle rear wheel means the end of the crawler on the vehicle rear side.

The work vehicle of the present invention may be equipped with a binder tank, and the binder may be sprayed from the plurality of spray nozzles onto the road surface by a pumping means such as a pump from the binder tank. It is also possible to dispose the binder supply vehicle at the rear of the vehicle and spray the binder on the road surface while receiving the supply of the binder from the binder supply vehicle at any time. When the binder is sprayed while being supplied with the binder from the binder supply vehicle, the work vehicle need not be equipped with a binder tank. A plurality of spray nozzles are positioned substantially linearly in the width direction of the work vehicle, and the amount and width of spraying the binder can be appropriately changed.

The aggregate bin (bi) mounted on the work vehicle of the present invention
n) has an aggregate discharge port that can freely adjust the opening length in the width direction of the work vehicle and the opening length in the direction orthogonal to the width direction of the work vehicle. The opening length in the orthogonal direction is adjusted by, for example, an opening / closing door for adjusting the amount of aggregate spread that moves in a direction orthogonal to the width direction of the work vehicle, and the opening length of the aggregate discharge port in the width direction of the work vehicle is, for example, Is adjusted by an aggregate spread width adjusting opening / closing door having a notch portion that moves or rotates in a direction orthogonal to the work vehicle width direction. As described above, by providing the opening / closing door for adjusting the amount of aggregate spread, the amount of aggregate spread from the aggregate bin to the road surface can be appropriately changed according to the type of aggregate, working conditions, etc. It is possible, and for example, even when the speed of the work vehicle changes, it is possible to constantly spray a fixed amount of aggregate on the road surface in association with the speed of the work vehicle. Further, since the aggregate spread width adjusting opening / closing door is provided, it is possible to appropriately change the spread width of the aggregate, and it is possible to appropriately diffuse the aggregate according to the construction road surface width.

Further, the aggregate bin according to the present invention can be provided with a roll-shaped or belt-conveyor type aggregate discharge means for adjusting the aggregate discharge speed at the aggregate discharge port. The means changes the amount of aggregate discharged per unit time from the aggregate discharge port by adjusting the operating speed such as its rotation speed, and mainly cooperates with the aggregate spread amount adjusting opening / closing door. Assures that a certain amount of aggregate is always sprayed when the work vehicle changes speed.

The aggregate bin mounted on the work vehicle of the present invention is preferably provided with a means such as, for example, a screw conveyor, for uniformizing the introduced aggregate in the width direction of the work vehicle. After the material is sufficiently homogenized in the width direction of the work vehicle in the aggregate bin, it is sprayed from the aggregate discharge port to the road surface, so that more uniform dispersion of the aggregate is possible.

The aggregate bin mounted on the work vehicle of the present invention is
Since it has an aggregate discharge port near the road surface, it is possible to spray aggregate from a relatively low position, unlike the conventional method of spraying aggregate from a high position on a dump truck. Therefore, there is no risk that the scattered aggregate scatters or rolls and scatters outside the construction width.

In the work vehicle of the present invention, the sprinkling means for the binder and the sprinkling means for the aggregate are mounted on a single vehicle. However, it is easy to control them uniformly.

Further, it is desirable that the work vehicle of the present invention is provided with an auxiliary material spray nozzle in close proximity to the bonding material spray nozzle. Alternatively, for example, a double-headed gun nozzle or the like may be provided as a device capable of simultaneously spraying the binding material and the auxiliary material. The auxiliary material is sprayed as needed and mixed with the binder to be used for the purpose of, for example, accelerating the solidification of the binder.

Further, the work vehicle of the present invention may be equipped with a means for spraying water and / or a primer, and water or the primer may be sprayed on the road surface first, and then the binder may be sprayed. It is also possible to mount a heating means on the rear side of the aggregate bin and heat the road surface immediately after the aggregate is sprayed to accelerate the decomposition of the binder and build a stronger surface treatment layer in a short time. .

Further, the working vehicle of the present invention is equipped with one or more binder spray bars each having a plurality of spray nozzles and one or more aggregate bins. On the road surface, 1 binder and 1 aggregate, respectively
Alternatively, it is also possible to spray twice or more. In that case, the number of times of spraying the binder and the aggregate may be the same or different, and the type of binder, the aggregate to be sprayed, the particle size, the amount of spray, etc. may be different for each spray. Good or the same.

Hereinafter, the spray 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 that shown in the drawings.

[0023]

1 is an explanatory view showing an example of a spraying type surface treatment work vehicle of the present invention. In FIG. 1, reference numeral 1 is a spraying type surface treatment work vehicle of the present invention. Has
The spray nozzle 2 as a binder spraying means and the aggregate bin 3 as an aggregate sprayer are arranged in this order from the front of the work vehicle 1. It is provided behind the rear wheel 4b of the work vehicle 1. Incidentally, 4a is a front wheel of the work vehicle.

The spray nozzle 2 is, for example, as shown in FIG. 2, a spray bar 5 provided in the width direction of the work vehicle 1.
A plurality of work vehicles 1 are provided in the width direction of the work vehicle 1.
The spray nozzles 2a, 2b, ... Are provided with valves 6a, 6b ,.
By opening and closing 6b, ..., the spray nozzle 2
It is possible to start or stop the injection of the binder from a, 2b, .... In the example of FIG. 2, a valve 6a provided on the spray nozzles 2a _{1 to} 2a ₄ in the left half of FIG.
_{1 to} 6a ₄ are connected to the operating pestle 7 so as to open or close all at once in accordance with the operation of the air cylinder 8. On the other hand, the spray nozzles 2b, 2c, ... In the right half of FIG.
The operations b, 6c, ... Can be independently controlled by air pressure. The means for driving the cylinders and valves is not limited to air, but other means such as hydraulic pressure or electromagnetic force may be used. With this configuration, for example, by operating the control panel installed in the driver's seat of the work vehicle 1 or by operating the air cylinder 8 according to a predetermined program, the valves 6a _{1 to} 6a are operated. ₄ can be opened all at once, and the binder can be sprayed from the spray nozzles 2a _{1 to} 2a ₄ to a portion of a predetermined width of the road surface. The spreading width is displayed in real time on the control panel. In order to increase the spraying width, the valves 6b to 6f may be actuated only by air pressure so that only the spray nozzles 2b to 2f spray the binder. In the case of this figure, the spray nozzle 2 located in the left half of the work vehicle 1
a ₁ to 2A region ₄ has been so as to opening and closing operations collectively, may also be capable of opening and closing all of the spray nozzle _2a 1 ~2f individually, by changing the number of spray nozzles opened and closed in unison Is also good. Further, in the illustrated example, the valve operated by pneumatic pressure is shown, but it goes without saying that a valve operated electromagnetically may be used. The amount of the binder sprayed from each spray nozzle may be adjusted by adjusting the opening degree of the valve 6, but another means such as a valve is provided upstream of the spray bar 5, and It is preferable to adjust the opening degree of the valve.

On the other hand, the aggregate bin 3 has a shape as shown in FIG. 3, and can be detachably attached to the work vehicle 1 by the attaching members 9, 9. Reference numeral 10 denotes a hydraulic cylinder for moving the aggregate bin 3 up and down around the attachment members 9 in an arc shape even after the aggregate bin 3 is attached to the work vehicle 1. By allowing the aggregate bin 3 to move up and down in an arc shape in this manner, maintenance and management of the spray nozzle 2 for the binder, which is inside the work vehicle 1 with respect to the aggregate bin 3, becomes easier.

Reference numeral 11 denotes an aggregate receiving port into which the tip of the aggregate conveying conveyor indicated by reference numeral 12 in FIG. 1 is inserted. Reference numeral 13 denotes a vibration imparting device, which can evenly distribute the aggregate, prevent the aggregate from agglomerating, and smooth the discharge of the aggregate by appropriately applying vibration to the aggregate bin. it can. Reference numeral 14 is an aggregate-dispersion amount adjusting door, and 15 is an operation lever thereof, which cooperates with an aggregate-dispersion width adjusting door indicated by reference numeral 16 to adjust the opening degree of the aggregate discharge port 17. Reference numeral 18 denotes an aggregate discharge roll as an aggregate discharge means.

Next, the functions of the aggregate spread amount adjusting door 14, the aggregate spread width adjusting door 16 and the aggregate discharging roll 18 will be described with reference to FIGS. 4 and 5. The aggregate-dispersion-amount adjusting door 14 is provided with an operation lever 15 by a rack and pinion mechanism, for example.
Can be moved up and down according to the operation of, and the length of the aggregate discharge port 17 in the direction orthogonal to the width direction of the work vehicle 1 is adjusted. The opening / closing degree of the aggregate-dispersion-amount adjusting door 14 can be adjusted also from the driver's seat of the work vehicle 1 by panel operation or by driving a drive means (not shown) according to a predetermined program. The basic amount of aggregate discharged from the aggregate discharge port 17 is determined by the opening / closing degree of the aggregate-dispersion-amount adjusting door 14.

On the other hand, the aggregate spread width adjusting door 16 has a cylindrical shape in the illustrated example, and a part of the cylindrical shape is cut out with a curved line. Therefore, by rotating the aggregate spread width adjusting door 16, the opening length of the aggregate discharge port 17 in the width direction of the work vehicle 1 is changed, and the spread width of the aggregate is adjusted. The rotation angle of the aggregate spread width adjusting door 16 can be manually adjusted by operating a lever (not shown). Like the aggregate spread amount adjusting door 14, the panel from the driver's seat of the work vehicle 1 can be adjusted. It can also be adjusted by operation or by driving the drive means according to a predetermined program. In addition, when an angle scale indicating the rotation position or an aggregate spread width scale indicating the rotation position converted into the aggregate spread width is attached to the side surface of the aggregate spread width adjustment door 16, the aggregate spread at that time is changed. It is convenient to know the spray width. The aggregate spread width adjusting door 16 is not limited to a cylindrical one, and for example, as shown in FIG. 6, a plate-like aggregate spread width adjusting door 16 which is cut out with a curved line may be used. In the case of the plate shape as described above, the aggregate spread width adjusting door 16 moves up and down in parallel with the aggregate spread amount adjusting door 14.

The discharge / dispersion of the aggregate from the aggregate bin 3 is basically performed by the aggregate-dispersion amount adjusting door 14 and the aggregate-dispersion width adjusting door 1 described above.
6 is possible, for example, if finer aggregate discharge control is to be performed according to the traveling speed of the work vehicle 1, for example, aggregate discharge means such as the aggregate discharge roll 18 Is desirable. The aggregate discharge roll 18 has an uneven surface made of rubber, synthetic resin, metal, or the like on its surface. By rotating in the direction of the arrow shown in FIG. 4 or FIG. 5, the aggregate is continuously discharged from the aggregate discharge port. It is discharged and sprayed. Instead of the unevenness, the surface may be covered with a mesh cloth made of rubber, synthetic resin or metal. By changing the rotation speed of the aggregate discharge roll 18, it is possible to adjust the discharge speed of the aggregate discharge roll.
If it is changed in accordance with the speed of, the fixed amount of aggregate can be always sprayed on the road surface regardless of the speed of the work vehicle 1. The shape of the aggregate discharge roll 18 is as shown in FIG.
Although FIG. 5 shows a circular cross section, the cross section may be oval or polygonal.

The aggregate discharge port 17 is 50 at maximum from the road surface.
cm or less, preferably 30 cm or less, more preferably 2
The aggregate is opened at a position of 0 cm or less, and the aggregate is discharged from the aggregate discharge port 1
Even if sprayed from 7 to the road surface, the aggregate will bounce on the road surface,
There is no risk of scattering or rolling and scattering outside the construction width. It is also possible to provide the entire aggregate bin 3 so as to be vertically movable. In addition, the aggregate bin 3 is provided with heating and heat retaining means (not shown) so that the aggregate inside can be heated or kept warm as necessary.

As shown in FIG. 1, an aggregate hopper 19 is provided at the front part of the work vehicle 1. The aggregate hopper 1 is
The aggregate once accumulated in 9 is conveyed to the aggregate bin 3 located at the rear of the work vehicle by the aggregate conveyer 12.
Examples of the aggregate conveyer 12 include a belt conveyer, a screw conveyer, a bar conveyer, and a bucket conveyer.
Any transporting means may be used as long as it can transport the aggregate.

As shown in FIG. 7, a screw conveyor 20 is provided in the aggregate bin 3, and the aggregate bin 3 is rotated by rotating the screw conveyor 20.
Inside, the aggregate is made uniform in the width direction of the work vehicle 1.

In FIG. 1, reference numeral 21 is a spray nozzle for an auxiliary material, which is a means for spraying the auxiliary material. For example, as shown in an enlarged view in FIG. 8, a spray bar 22 is provided corresponding to the spray nozzle 2 for the bonding material. A plurality of work vehicles 1 are provided in the width direction of the work vehicle 1. The position of the spray nozzle 21 is
It may be behind the work vehicle with respect to the spray nozzle 2 or in front of the work vehicle with respect to the spray nozzle 2, but it is necessary to be close to the spray nozzle 2 and the spray nozzle 21 is It is also possible to provide it at an angle such that the binding material sprayed from the spray nozzle 2 and the auxiliary material sprayed from the spray nozzle 21 are mixed in the air. Alternatively, a spray nozzle of a double-headed gun capable of simultaneously spraying a plurality of materials may be used, or the spray may be performed 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 at the same time as the binder, but when the mixing is extremely quick, the auxiliary material may be sprayed immediately before or immediately after the binder is sprayed.

The spraying amount or spraying width of the auxiliary material from the spray nozzle 21 can be changed by opening / closing the valve 23 provided in each spray nozzle 21 or adjusting the opening degree thereof. Normally, since the auxiliary material is always used in pairs with the binder, the spraying amount and the spraying width of the auxiliary material from the spray nozzle 21 should be changed in conjunction with the spraying amount and the spraying width of the binder. Is preferred. For example, as shown in FIG. 8, the opening / closing operation of the valve 23 for the auxiliary material is linked with the opening / closing operation of the valve 6 for the connecting material, and both are connected to the operating punch 7, and, for example, along with the operation of the air cylinder 8. , Can be opened and closed at the same time. By doing so, a spray nozzle 2a ₁ to 2A region ₄ on the left half of FIG. 2, the spray nozzle 21 corresponding thereto will be opened and closed in unison.

On the other hand, the spray nozzle 21 on the right half of the work vehicle 1 is, as shown in FIG.
b, 2c, ... Can be individually associated with and connected to each other to perform opening and closing operations as a set.
With this configuration, it is possible to always change the spray width of the auxiliary material in conjunction with the spray width of the binder. The amount of the auxiliary material sprayed from each of the spray nozzles 21 may be adjusted by adjusting the opening degree of the valve 23. It is preferable to provide the above means and adjust the opening degree of the valve.

Returning to FIG. 1, reference numeral 24 is a binding material carrying socket to which a connecting pipe from a binding material feeding vehicle (not shown) following the work vehicle 1 is connected, and 25 is a binding material carrying pump. In the example of FIG. 1, the work vehicle 1 is not particularly provided with a binder tank, and the binder transported into the work vehicle 1 by the binder transport pump 25 is directly sent to the spray nozzle 2. Has become. A binder tank is provided in the work vehicle 1, the binder is temporarily stored therein, and the binder stored in the binder tank is appropriately sprayed by a binder transport pump 25 or other pressure feeding means. You may send it to 2. Spray the binder 2
Even if the speed of the work vehicle 1 changes by changing the number of revolutions of the binder transporting pump 25 or the pressure feeding speed of other pressure feeding means according to the speed of the work vehicle 1,
It is possible to spray a certain amount of binder at all times.

In the work vehicle 1, the binder tank or pipe portion through which the binder stays or passes, including the spray bar 5, the valve 6 and the spray nozzle 2, is provided with appropriate heating and heat retaining means (not shown). For example, an oil heater or hot air supply means is provided to keep the binder at a constant temperature until the binder is sprayed from the spray nozzle 2 so as to maintain a predetermined property.
Further, since the spray nozzle 2 is also provided with heating or heat retaining means as described above, there is no possibility that the remaining binder is solidified in the spray nozzle 2 and clogs the spray nozzle 2.

Reference numeral 26 is an auxiliary material tank, and the auxiliary material is supplied from the auxiliary material tank 26 to the spray nozzle 21 by a pressure feeding means such as a pump (not shown). It is needless to say that appropriate heating or heat retaining means can be provided in the auxiliary material tank 26 and the auxiliary material pipeline, if necessary.
The auxiliary material is used to adjust the properties of the binder, and includes, for example, a solidification accelerator and a decomposition accelerator of the binder, but is not limited to these. Absent.

In FIG. 1, 27 is a nozzle for spraying water or a primer, which is sprayed on the road surface before spraying the binder. Water is sprayed to enhance the adhesiveness and familiarity between the asphalt emulsion and the road surface, for example, when the asphalt emulsion is used as a binder, and also has the effect of lowering the increased road surface temperature in the summer. On the other hand, the primer is used, for example, when heated asphalt is used as a binder, and has the effect of enhancing the adhesiveness and conformability between the heated asphalt and the road surface. These water or primer is stored in a dedicated tank 28 and is appropriately selected and used.

In FIG. 1, reference numeral 29 denotes a heating device, which together with the working step 30 can be easily attached / detached to / from the rear part of the aggregate bin 3 with one touch. The heating device 29 can heat the road surface after the aggregate has been sprayed, accelerate the decomposition or solidification of the binder, and build a stronger surface treatment layer in a short time. Further, 31 is a push roller for pushing an aggregate supply vehicle (not shown), and the push roller 31 pushes the aggregate supply vehicle forward,
It is possible to continuously work while receiving the supply of aggregate from the aggregate supply vehicle. It goes without saying that traction means may be provided between the work vehicle 1 and the binder supply vehicle.

The dispersion type surface treatment layer of the dispersion type surface treatment work vehicle of the present invention is constructed, for example, as shown in FIG. That is, the road surface 1
After cleaning 01 as necessary, first, while advancing the working vehicle 1 of the present invention together with the aggregate supply vehicle and / or the binder supply vehicle (not shown) in the forward direction, first spray the water or the primer 32 from the nozzle 27. Then, the binder 33 is sprayed from the spray nozzle 2 for the binder. At the same time, the auxiliary material 34 is sprayed from the spray nozzle 21 and mixed with the binding material 33 in the air, so that the binding material 33 and the auxiliary material 34 are mixed on the road surface 101.
And a layer of a mixture thereof is formed into a film. Subsequently, the aggregate 35 is sprinkled in one layer from the aggregate bin 3 on the layer of the mixture of the binding material 33 and the auxiliary material 34.

Here, it is important that the spray nozzle 2 for the binder that sprays the binder 33 and the aggregate bin 3 that sprays the aggregate 35 are mounted on the same work vehicle 1. Since the spray nozzle 2 for the binder and the aggregate bin 3 are attached to the same vehicle, the distance between them is usually constant, and as long as the work vehicle 1 moves forward at a constant speed, the binder 33
The time from when the aggregates are dispersed until the aggregates 35 are dispersed is constant. Therefore, the property of the binder 33 immediately before the aggregate 35 is sprayed is constant, and uniform and reliable attachment of the binder 33 and the aggregate 35 is realized. The time from the application of the binding material 33 to the application of the aggregate 35 is within a fixed time, preferably within a short time, and more preferably within a fixed short time and as long as it is constant. Although it may be present, it is usually within 10 seconds, preferably within 6 seconds, and more preferably within 3 seconds in view of work efficiency. It goes without saying that the optimum time is appropriately determined depending on the degree of damage to the road surface, the linear shape of the site, and the like.

As the binding material, including those used in the conventional spraying type surface treatment method, as long as it is a bituminous material or any other material capable of binding the road surface to the aggregate,
Any material can be used. Modified hot asphalt or modified asphalt emulsion is typically used, but not limited to these. The amount of the binder sprayed may be similar to that in the conventional spray-type surface treatment method, but is typically 0.5 to 2.5 (l / m ² ).
The degree is preferably about 0.7 to 1.5 (l / m ² ). Further, the aggregate to be used is not particularly limited as long as it can be used in the spraying type surface treatment method, and any kind may be used, but the particle size is preferably a single particle size.

In the above example, the distance between the spray nozzle 2 for the binder and the aggregate bin 3 is kept constant and the work vehicle 1 is moved forward at a constant speed. However, the speed of the work vehicle 1 is kept constant. If it is difficult to keep, spray nozzle 2 for binder
The distance between the aggregate bin 3 and the aggregate bin 3 may be changed according to the speed of the work vehicle 1. That is, when the work vehicle 1 slows down, the distance between the spray nozzle 2 for the binder and the aggregate bin 3 is narrowed, and conversely, when the work vehicle 1 increases the speed, the spray nozzle for the binder. By increasing the distance between the aggregate 2 and the aggregate bin 3, it is possible to always keep the time from the dispersion of the binder 33 to the dispersion of the aggregate 35 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 time from the spraying of the binder to the spraying of the aggregate is within a certain time, the speed of the work vehicle may be slightly changed.

The amount of water, the primer, the binder, the auxiliary material, and the aggregate can be collectively controlled on, for example, the control panel provided in the driver's seat of the work vehicle 1, and the characteristics of the road surface, the temperature, and the road surface can be controlled. 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. 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 based on the detection signal, a constant amount of The spraying amount is varied so that the binder, the auxiliary material, or the aggregate is sprayed.

Furthermore, the spraying width can be changed at any time,
Specify the spreading width on the control panel or
It is also possible to appropriately set and change using a control box as shown in FIG. That is, in FIG. 11, the operation key 3
6a, 36b, ... Correspond to individual sections of the spread width, and each operation key becomes effective when it is rotated a predetermined angle from the position shown in the drawing, and the spread width corresponding to each operation key is changed. Spraying will be started. To determine which operation key is effective, by utilizing the fact that the operation keys 36a, 36b, ... Have different lengths, the spray width control bar 37 is moved to an appropriate position indicated by the arrow direction, This is done by engaging the selected activation key. Reference numeral 38 denotes a spray width control pin, which is a pin for fixing the spray width control bar 37.
When the operation keys have been selected, by pulling the starting lever 39 toward the braking lever 40, the operation keys that are engaged with the spread width control bar 37 are turned all at once and become effective. The spreading is started in the corresponding spreading width. To stop the spraying, the braking lever 40 may be tilted to the starting lever 39 side and the operation key may be rotated to the original state.

The amount of spray, the width of spray, and other working conditions of the work vehicle are monitored in real time on the control panel and appropriately stored or recorded.

In the work vehicle 1 of the present invention, water or the primer 32 is sprayed, the binder 33 and the auxiliary material 34 are sprayed so that the binder 33 and the aggregate 35 are sprayed on the construction site without excess or deficiency. In addition, the spraying of the aggregate 35 is performed by the work vehicle 1
Start with a predetermined time difference according to the speed of
It is arranged to finish with a predetermined time difference.

In the example of FIG. 10, the row of the plurality of binder spray nozzles 2 attached to the binder spray bar 5 is one row, and the number of the aggregate bins 3 is one. The number of rows and the number of aggregate bins 3 are not limited to one, and may be two or more as long as they are behind the rear wheel 4b of the work vehicle 1. For example, one row of the spray nozzles 2 for the binder and one of the aggregate bins 3 are provided as a set, and two or more such sets are provided, and a plurality of layers are constructed at once by one passage of the work vehicle. You can also do it. Further, the number of rows of the spray bar 2 and the number of the aggregate bins 3 do not necessarily have to be the same, and two or more aggregate bins 3 are provided for one row of the spray bar 2 to provide a single binder. For example, two or more kinds of aggregates having different particle sizes may be sprinkled on the layer,
On the contrary, two or more rows of spray bars 2 may be provided for one aggregate bin 3 so that a large amount of various kinds of binders can be dispersed. Thus, using the work vehicle of the present invention,
By passing the work vehicle once, various kinds of binders and aggregates can be formed on the road surface 101 by changing the type, the particle size, and the amount of spray.
It can be sprayed once or more than once, and a desired sprayable surface treatment layer can be constructed at once. Further, it is not always necessary to use all the rows of the plurality of spray bars 2 and the aggregate bins 3 provided, and it is possible to use only the necessary one of them. In the above case, the binder, the auxiliary material, and the aggregate that are sprayed once or twice or more may have the same kind, particle size, spray amount, and the like,
Each may be different.

Now, the binder spreading device and auxiliary material spreading device used in the spray type surface treatment work vehicle of the present invention will be further described. FIG. 12 is used in the spray type surface treatment method of the present invention. Of the sprinklers for binders and auxiliary materials,
FIG. 3 is a diagram showing only the spraying device for the binder,
The same parts as those in the previous figures are designated by the same reference numerals. 5
Represents a spray bar for spraying the binder as in the previous figures, and 2-1, 2-2, 2-3, ... Are spray nozzles for spraying the binder attached to the spray bar 5. . Also, 33-1, 33-2, 33-3, ...
Is a binder sprayed from each spray nozzle. Any type of spray nozzle may be used as the spray nozzles 2-1, 2-2, 2-3, ..., For example, a spray nozzle having an injection pattern of a circular whole surface shape or a square whole surface. Although it may have an injection pattern of a circular shape, an injection pattern of an annular shape, or another injection pattern, from the viewpoint of realizing uniform dispersion, FIG.
It is desirable to use a spray nozzle having a flat spray pattern as shown in FIG. The flat injection pattern is an injection pattern that is ejected in a fan shape from the spray nozzle at a certain injection angle α and has a substantially linear cross-section with a long and narrow cross section perpendicular to the injection direction. The flat surface refers to the surface of a fan having a fan-shaped injection pattern.

FIG. 13 is a plan view of FIG. 12 seen from above. As shown in FIG. 13, the flat spray nozzles 2-1, 2-2, 2-3, ... , The flat surfaces of the spray patterns of the sprayed binders 33-1, 33-2, 33-3, ... Are arranged so as to form a certain angle β with the row direction of the spray nozzle row. The angle β is not particularly limited and may be any number within the range of 0 to 90 degrees,
From the viewpoint of canceling the non-uniformity by overlapping the spray patterns from the spray nozzles, normally, 5 to 45 degrees,
Preferably, it is 10 to 40 degrees, more preferably 15 to 35 degrees.
The range of degrees. The attachment angles β of the spray nozzles are preferably the same in one spray bar.

As shown in FIGS. 12 and 13, the sprayed bonding materials 33-1, 33-2, 33-3 from the spray nozzles 2-1, 2-2, 2-3 ,. When viewed from the horizontal direction orthogonal to the longitudinal direction of the spray bar 5, the parts of the ... overlap with each other. For example, in FIG.
In the case of FIG. 13, each injected bonding material 33-1, 33
-2, 33-3, ... Are 2/33 of each other on the road surface 101.
There are 3 overlaps. The spraying type surface treatment work vehicle of the present invention equipped with the spraying device for the binding material composed of the spray bar 5 and the spray nozzles 2-1, 2-2, 2-3, ... Since it travels in a direction orthogonal to the direction, when viewed from a certain point on the road surface 101, for example, point A, the binders 33-4 and 33-3 sprayed from the spray nozzles 2-4, 2-3 and 2-2. , 33-2. Therefore, point A is three times convenient, that is,
You will receive a triple spray. The number of overlapping sprays is not limited to triple, and may be double or quadruple or more. It is preferable to spray it. It goes without saying that the plurality of sprays can be appropriately adjusted by adjusting the height of the spray nozzle from the road surface, the spray angle α from the spray nozzle, the interval between the spray nozzles, and the like.

With respect to the above-described binder spreading device, the auxiliary material spreading device used in the spreading type surface treatment method of the present invention is preferably installed side by side, for example, as shown in FIG. FIG. 14 is a side view showing a preferable side-by-side state of the binder spraying device and the auxiliary material spraying device. The tip of the auxiliary material spray nozzle 21 attached to the auxiliary material spray bar 22 is shown in FIG. It is bent and arranged so that the injected auxiliary material 34 collides with the bonding material 33 injected from the spray nozzle 2 in the air.

FIG. 15 is a view of the apparatus of FIG. 14 seen from above. As shown in FIG. 15, in the apparatus used for the spraying type surface treatment method of the present invention, one spray nozzle for the binder is used. On the other hand, one auxiliary material spray nozzle corresponds to the auxiliary material spray nozzle. For example, the auxiliary material spray nozzle 2-1 ejects the auxiliary material spray nozzle 2-1 from the auxiliary material spray nozzle 2-1. The injected auxiliary material 34-1 collides in the air, and the auxiliary material spray nozzle 21-
The auxiliary material 34-2 injected from No. 2 collides in the air. Spray nozzles 2-1 and 2 for the binder, in which the injected binder or auxiliary material collides with each other in the air.
2, ... and spray nozzles 21-1, 21 for auxiliary materials
The correspondence between -2, ... Is extremely strict,
The two correspond one-to-one. For example, the auxiliary material 34-2 ejected from the auxiliary material spray nozzle 21-2 and the bonding material 33-ejected from the corresponding bonding material spray nozzle 2-2. No. 2 collides in the air and does not collide with the binder sprayed from another spray nozzle for the binder.

Spray nozzles 2-1 and 2-2 for the binder, in which the injected binder or auxiliary material collides with each other in the air.
... and spray nozzles 21-1, 21- for auxiliary materials
Such a one-to-one correspondence relationship between 2, ... Is realized as follows. For example, in FIG. 15, the auxiliary material 3 sprayed from the auxiliary material spray nozzle 21-1.
Taking 4-1 as an example, between the sprayed auxiliary material 34-1 and the corresponding bonding material 33-1, the bonding material 33- which is sprayed from the spray nozzle 2-2 for the bonding material which does not correspond. 2 is present, the injected bonding material 33-2 is, for example, as shown in FIG.
As shown in FIG. 2, since it is fan-shaped with a widened hem, the injected auxiliary material 34-1 passes above the inclined shoulder-shaped widened portion of the binding material 33-2 in front, and is joined. Material 3
It suffices to collide with 3-1. That is, in FIG. 12, when viewed from the horizontal direction orthogonal to the longitudinal direction of the spray bar 5, the horizontal direction is obtained from the intersection point x between the right shoulder of the injected bonding material 33-1 and the left shoulder of the injected bonding material 33-2. The line segment drawn in Fig. 15 is shown as a line segment X, but the auxiliary material 34-1 sprayed from the auxiliary material spray nozzle 21-1 in FIG.
However, if the spray nozzles for the bonding material and the spray nozzles for the auxiliary material are made to correspond to each other on a one-to-one basis by passing over the bonding material 33-2 at a position higher than the line segment X in FIG. be able to. The spray nozzles 2-1, 2-2, 2-3, ... For the bonding material and the spray nozzle 21-for the auxiliary material so that the injected bonding material and the auxiliary material have such a positional relationship. , 21-2, 21-3, ... are arranged so that, for example, the auxiliary material 34-3 sprayed from the auxiliary material spray nozzle 21-3 becomes the bonding material spray nozzle 2-3. 33-3 which was injected from
And the bonding material 33-2 or 3 sprayed from the spray nozzle 2-2 or 2-4 for the other bonding material adjacent to the bonding material 33-2 or 3
It will not collide with 3-4.

The spray nozzle 21-1 for auxiliary material
Since the injection direction of the auxiliary material 34-1 from the normal direction is obliquely downward, the bonding material 33-2 with the auxiliary material 34-1 on the front side.
Even if the position passing above is set to a position slightly higher than the line segment X, the collision position between the binding material 33-1 and the auxiliary material 34-1 on the binding material 33-1 is shown in FIG. As indicated by Y, it can be lowered to a position slightly lower than the line segment X. However, since many spray nozzles coexist in a narrow range, from the viewpoint of device design,
It is preferable that the collision position between the bonding material 33-1 and the auxiliary material 34-1 be slightly above the line segment X.

If the collision position Y between the binder and the auxiliary material is too low, the time from the collision of the binder and the auxiliary material to the drop on the road surface and the loss of momentum is too short, resulting in uniform mixing. Is not realized, and if it is too high, both the injected binder and auxiliary material will collide with each other in a state where they are still thick and hardened, which is not preferable. Therefore, the collision position Y
The height of the spray nozzle 2-1 for the binder from the road surface 1
The height is up to H, preferably in the range of 1 / 4H to 3 / 4H, and more preferably in the range of 2 / 4H to 3 / 4H.

As described above, the spray nozzles 2-1, 2-2, 2-3 ... For the binder and the spray nozzles 21-1, 21-2, 21-3 ... For the auxiliary material. By making one-to-one correspondence between and, it becomes easy to control the collision ratio such as the quantitative ratio of the binding material and the auxiliary material that collide, the collision speed, the collision position, etc. It is possible to cause collision at a ratio and under optimum collision conditions. As a result, it is needless to say that a very uniform mixing of the two is realized and a shorter curing time can be realized when the auxiliary material is, for example, a material for promoting decomposition of the binder.

Further, in the apparatus used for the spraying type surface treatment method of the present invention, as shown in FIG.
-1, 34-2, 34-3, ... To each of the corresponding joint members 33-1, 33-2, 33-3, ..., Collision positions Y1, Y2, Y3 ,. ... The jetting is performed so that the jetting density above becomes uniform. That is, the auxiliary members 34-1, 34-2, 34-3, ... In the plan view of FIG.
, 33-2, 33-3, ... Vertical planes Z1, Z2, Z3, ...
· At an angle that is symmetrical with respect to
It is injected toward 1, 33-2, 33-3, .... As a result, the collision positions Y1, Y2, Y3, ...
..Auxiliary materials 34-1, 34-2, 34-3, ...
The injection density becomes uniform throughout the width direction of the collision positions Y1, Y2, Y3, ..., A more uniform mixing of the binder and the auxiliary material is realized.

In the above example, the auxiliary material is made to collide obliquely with the binder that is injected almost perpendicularly to the road surface, but conversely, the auxiliary material is injected perpendicularly to the road surface. The binding material may be caused to collide obliquely with the auxiliary material, or both the binding material and the auxiliary material may be jetted obliquely to collide. However, considering that the binding material is a large amount and is the main material, the auxiliary material is obliquely collided with the binding material that is injected almost perpendicularly to the road surface as in the above-mentioned example. Is preferred.

As described above, when the spray nozzles of the binder and the auxiliary material are made to correspond to each other in a one-to-one manner and the binder and the auxiliary material are made to collide with each other in the air, an extremely uniform mixture of the two is obtained. Since it can be realized quickly, for example, when using a decomposition accelerator that accelerates the decomposition of the binder as an auxiliary material, even when using an asphalt emulsion that requires a relatively long time to decompose as a binder, it is possible to use a short curing time. It is possible to construct a strong and durable spray-type surface treatment layer, which enables early traffic opening.

The spray type surface treatment work vehicle of the present invention is
It is mainly used for repairing existing pavements, but it is not limited to repairing pavement, and using colored aggregates to build a colored surface layer on existing or new pavements, or to reflect light. It can also be used to construct a light-reflecting surface layer on an existing or new pavement using a flexible aggregate. According to the spray type surface treatment work vehicle of the present invention,
It is possible to construct a surface layer composed of a binder and an aggregate inexpensively continuously and efficiently by a simple operation.

The present invention will be further described below with reference to Examples and Comparative Examples.

(Embodiment 1) Using the work vehicle of the present invention shown in FIG. 1, the aggregate supply vehicle and the binder supply vehicle are respectively positioned before and after the work vehicle, and the spraying type surface treatment method is performed while all vehicles are moving forward. Was carried out. Prior to construction, the road surface is cleaned with a road sweeper, then the aggregate supply vehicle, the work vehicle of the present invention,
The binder supply vehicle was moved forward at a constant speed of 30 m / min. The distance between the spray nozzle for the binder and the aggregate bin is 1
Since it was m, the time from the application of the binder to the application of the aggregate was about 2 seconds. After the binder supply vehicle, the iron wheel roller and the tire roller were used together for rolling, and finally, the floating stones were removed by the 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 Spreading amount: 0.97 (l / m ² ) <Aggregate> Aggregate: No. 6 crushed stone (Kuzu, Tochigi Prefecture) Production) Spraying temperature: 150 ° C Spreading amount: 0.01 (m ³ / m ² ) <Auxiliary material> None <Primer> None

Table 1 shows the properties of the binder used.

[0067]

[Table 1]

(Embodiment 2) The same work vehicle, aggregate feeding vehicle, and binder feeding vehicle are used, but the forward speed is variously varied while keeping the distance between the binder feeding spray nozzle and the aggregate bin constant. By changing, the time from the dispersion of the binder to the dispersion of the aggregate is within a fixed time of about 10 seconds, but it is changed randomly during that time.
In the same manner as in Example 1, a surface treatment layer was constructed on the road surface continuous with Example 1.

(Comparative Example 1) According to the procedure of the conventional method shown in FIG. 16, after the heated asphalt was sprayed by the asphalt distributor, the dump truck, which is an aggregate spreader, was moved backward to spray the binder and then the bone. The same materials as in Example 1 were used in the same manner as in Example 2 except that the time until the material was sprayed was randomly changed from about 1 minute to about 3 minutes, and the procedure was continued with Example 2. A surface treatment layer was built on the road surface. Even with the longest time interval, the binding material remained liquid as far as visual inspection and the feeling with a driver or a spatula were examined.

After curing for one day and night, a heavy load was loaded on a large test vehicle, and the surface treatment layer constructed by the above-mentioned Example 1, Example 2 and Comparative Example 1 was applied at a speed of 30 km / h. After repeatedly running, the condition of each surface-treated layer was examined after 10 hours.

As a result, almost no scattering of aggregate was found in the section of Example 1, whereas in the section of Example 2, scattering of aggregate was slightly observed in the rut portion of the test vehicle. I was seen. On the other hand, in the section of Comparative Example 1, scattered traces of aggregate were found in the ruts of the test vehicle.

An attempt was made to peel off the aggregate with the tip of a driver or a spatula, but in the sections of Example 1 and Example 2, it was difficult to peel off the aggregate at all places, while comparison was made. In the section of Example 1, there were places where the aggregate could be peeled off relatively easily. this is,
In the section of Comparative Example 1, it is consistent with the result that many scattering traces of aggregate due to the passage of vehicles were found, which shows that there is a place where the bonding force between the road surface and the aggregate is insufficient. Also,
In the section of Example 2, as in the section of Example 1, although it was difficult to peel off the aggregate, depending on the passage of the test vehicle, the aggregate of the section of Example 2 was slightly, though slightly. The scattering traces of the aggregates were observed, although the bond itself between the aggregate and the road surface was not insufficient, but the time between the dispersion of the binder and the dispersion of the aggregate varied, so the bond between the aggregate and the road surface was changed. It is presumed that there were some areas where the force was not uniform, and as a result, when the vehicle passed, the vehicle load was concentrated on the area where the binding force was weak, and the aggregate was scattered.

(Examples 3, 4 and Comparative Example 2) As a binder, instead of gumphalt S, SP catiozole (normal temperature asphalt emulsion, manufactured by Nichireki Co., Ltd.) was used. Application temperature: 23 ° C Application amount : 1.32 (l / m ² ), except that the spraying temperature of the aggregate was 21 ° C., in the same manner as in Example 1, Example 2 and Comparative Example 1, respectively, Example 3, Example 4 and The surface treatment layer of Comparative Example 2 was constructed.
The road surface temperature during construction was 47 ° C and the air temperature was 28 ° C. Table 2 shows the properties of the SP binder, which is the binder used.

[0074]

[Table 2]

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

As a result, almost no scattering of aggregate was found in the section of Example 3, whereas in the section of Example 4, there was a slight trace of the scattering of aggregate in the rut portion of the test vehicle. I was seen. On the other hand, in the section of Comparative Example 2, scattering traces of a little amount of aggregate were found in the ruts of the test vehicle.

Attempts were made to remove the aggregate with the tip of a screwdriver or a spatula, but in the sections of Examples 3 and 4, it was difficult to remove the aggregate at all places, while comparison was made. In the section of Example 2, there were places where the aggregate could be peeled off relatively easily. this is,
In the section of Comparative Example 2, this is consistent with the result that many scattering traces of aggregates due to vehicle passage were found, which shows that there is a place where the bonding force between the road surface and the aggregates is insufficient. on the other hand,
In the section of Example 4, as in the section of Example 3, although it seemed difficult to peel off the aggregate, depending on the passage of the test vehicle, the aggregate was slightly in the section of Example 4. The scattering traces of the aggregates were observed, although the bond itself between the aggregate and the road surface was not insufficient, but the time between the dispersion of the binder and the dispersion of the aggregate varied, so the bond between the aggregate and the road surface was changed. It is presumed that there were some areas where the force was not uniform, and as a result, when the vehicle passed, the vehicle load was concentrated on the area where the binding force was weak, and the aggregate was scattered.

[0078]

As described above, according to the spray type surface treatment work vehicle of the present invention, it is possible to easily and efficiently construct a uniform and durable surface treatment layer while advancing the vehicle in the forward direction. Is possible. In addition, since the binder spreading means and aggregate spreading means are mounted on a single vehicle, it is possible to associate the binder spreading and the aggregate spreading with each other and manage them as a consistent process. Therefore, not only can the time interval from the spread of the binder to the spread of the aggregate be within a certain time, preferably a certain time, but also the spread width can be changed, and the spray start and end timings can be controlled uniformly. It becomes possible to do.

Further, by using the spraying type surface treatment work vehicle of the present invention, it is possible to carry out the construction continuously while receiving the supply of the aggregate and the binder from the other aggregate supply vehicle and the binder supply vehicle. It is possible to construct a uniform surface treatment layer without interruption even in a long construction section. The spray type surface treatment work vehicle of the present invention is not limited to the construction of the surface treatment layer for repair,
This is a very convenient and extremely useful invention because it can be used when constructing a surface layer composed of a binder and an aggregate on all pavements, whether existing or new.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a spraying type surface treatment work vehicle of the present invention.

FIG. 2 is a diagram showing an example of a spray nozzle for a binder.

FIG. 3 is a diagram showing an example of an aggregate bin.

FIG. 4 is an explanatory diagram of an aggregate bin.

FIG. 5 is an explanatory diagram of an aggregate bin.

FIG. 6 is a view showing another example of the spread width adjusting door.

FIG. 7 is a diagram showing a transportation route of an aggregate.

FIG. 8 is a diagram showing a relationship between a spray nozzle for a binding material and a spray nozzle for an auxiliary material.

FIG. 9 is a diagram showing a relationship between a spray nozzle for a binding material and a spray nozzle for an auxiliary material.

FIG. 10 is a diagram showing an example of construction using the spraying type surface treatment work vehicle of the present invention.

FIG. 11 is a diagram showing an example of a control box for changing the setting of the spray width.

FIG. 12 is a side view showing an example of a binder spreading device.

FIG. 13 is a plan view showing an example of a binder spreading device.

FIG. 14 is a side view showing an example of the positional relationship between the binder spraying device and the auxiliary material spraying device.

FIG. 15 is a plan view showing an example of the positional relationship between the binder spraying device and the auxiliary material spraying device.

FIG. 16 is a diagram showing a conventional construction method.

[Explanation of symbols]

1 work vehicle 2, 21, 27 spray nozzle 3 Aggregate bottle 4a, 4b Work vehicle tires 5,22 spray bar 6,23 valves 7 working pestle 8 air cylinders 9 Mounting member 10 hydraulic cylinder 11 Aggregate receiving port 12 Aggregate conveyor 13 Vibration imparting device 14 Aggregate spread amount control door 15 Operation lever 16 Aggregate spread width adjustment door 17 Aggregate outlet 18 Aggregate discharge roller 19 Aggregate hopper 20 screw conveyor 24 Socket for carrying in binder 25 Bonding material transfer pump 26 Auxiliary material tank 28 Water / Primer tank 29 Heating means 30 work steps 31 push roller 32 water / primer 33 binder 34 Auxiliary material 35 aggregate 36 Operation key 37 Spreading width control bar 38 Spreading width control pin 39 Starting lever 40 Brake lever 101 road surface 102 Road Sweeper 103 asphalt distributor 104 dump truck 105 roller α Spray nozzle spray angle β spray nozzle mounting angle

─────────────────────────────────────────────────── ───Continued from the front page (56) References JP-A-8-218312 (JP, A) JP-A-9-21102 (JP, A) JP-A58-17906 (JP, A) Actual development Sho-63- 27514 (JP, U) U.S.A. 1-44570 (JP, Y2) U.S.A. 50-30196 (JP, Y1) Patent 2541874 (JP, B2) Utility model registration 3002736 (JP, U) US patent 3016809 (US, US) A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) E01C 19/21 E01C 19/48 E01C 19/20 E01C 19/12 E01C 7/35 E01C 7/18

Claims (17)

(57) [Claims] 1. At least a binder and an aggregate in this order,
A spraying type surface treatment work vehicle that spreads on the road surface while advancing in the forward direction, including a spray bar for the binder that extends in the width direction of the work vehicle, and a plurality of spray nozzles for the binder that are attached to the spray bar for the binder. An aggregate having a rear portion of the work vehicle rear wheel, and an aggregate discharge port that can freely adjust the opening length in the width direction of the work vehicle and the opening length in the direction orthogonal to the width direction of the work vehicle behind the rear wheel. Equipped with a bottle and spread amount of binder
And the spreading width is adjustable, at least the spreading width of the binder
A spray-type surface treatment work vehicle that can be changed in conjunction with the spread width of aggregate . 2. The spray type surface treatment work vehicle according to claim 1, wherein the aggregate bin is provided with a means for uniformizing the loaded aggregate in the width direction of the work vehicle. 3. An aggregate-dispersion amount adjusting door for adjusting the opening length of the aggregate bin in a direction orthogonal to the work vehicle width direction by moving in the direction orthogonal to the work vehicle width direction, Move in a direction orthogonal to the width direction of the work vehicle to move the aggregate discharge port to the width direction of the work vehicle.
Aggregate width with cutouts to adjust the opening length of
An adjusting door, or an aggregate spread width adjusting door having a notch portion, which rotates around the width direction of the work vehicle to adjust the opening length of the aggregate discharge port in the width direction of the work vehicle, Item 1
Alternatively, the spray type surface treatment work vehicle described in 2. 4. The spray type surface treatment work vehicle according to claim 1, wherein the aggregate bin has aggregate discharge means for adjusting the aggregate discharge speed at the aggregate discharge port. 5. The spray type surface treatment work vehicle according to claim 1, wherein the aggregate bin is provided with a vibration imparting device. 6. The spraying type surface treatment according to claim 1, wherein an aggregate hopper is provided in front of the work vehicle, and an aggregate conveying means from the aggregate hopper to the aggregate bin is provided. Work vehicle. 7. A spray-type surface treatment work vehicle according to claim 1, 2, 3, 4 or 6 and a coupling member carrying socket and / or binder tank. 8. An auxiliary material spray bar, and a plurality of auxiliary material spray nozzles attached to the auxiliary material spray bar, comprising at least an auxiliary material spray nozzle,
The rear side of the rear wheel of the work vehicle, and a position close to the spray nozzle for the binder, provided in a position 1, 2.
The spray type surface treatment work vehicle according to 5, 6, or 7 . 9. The spray type surface treatment work vehicle according to claim 8 , wherein the spray nozzle for the binder and the spray nozzle for the auxiliary material are provided in a positional relationship such that the binder and the auxiliary material collide in the air. . 10. The spray type surface treatment work vehicle according to claim 8 or 9 , wherein a spray amount and a spray width of the auxiliary material can be adjusted and can be changed in association with a spray amount and a spray width of the binder. 11. A spraying means for water and / or a primer is provided in front of the working vehicle with respect to the spray nozzle for the binder, and the spraying means is provided with 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10.
Dispersion type surface treatment work vehicle described in. 12. The road surface heating means is provided behind the work vehicle of the aggregate bin, and the road surface heating means is provided.
9. The spray type surface treatment work vehicle according to 9, 10 or 11 . 13. A binder spray bar having a plurality of spray nozzles and an aggregate bin, 1 or 2, respectively.
Claims 1, 2, 3, 4, 5, 6, 7, comprising the above
The spray type surface treatment work vehicle according to 8, 9, 10, 11 or 12 . 14. A means for detecting the speed of a work vehicle, and based on the detected speed of the work vehicle, a spraying amount of a binder or a binder and an auxiliary material and / or a spraying amount of an aggregate and / or 4. A means for adjusting the discharge rate, 1, 2, 3,
4, 5, 6, 7, 8, 9, 10, 11, 12 or 13 , the spray type surface treatment work vehicle. 15. An aggregate bin having an aggregate discharge port capable of freely adjusting the opening length in the work vehicle width direction and the opening length in the direction orthogonal to the work vehicle width direction, which is orthogonal to the work vehicle width direction. The aggregate opening / closing door for adjusting the spread amount of the aggregate that adjusts the opening length of the aggregate discharge port in the direction orthogonal to the width direction of the work vehicle, and the aggregate that moves in the direction orthogonal to the width direction of the work vehicle Vent
Has a notch to adjust the opening length of the work vehicle in the width direction.
Aggregate spread width adjustment door or work vehicle width direction
An aggregate dispersal aggregate bin having an opening / closing door for adjusting an aggregate dispersal width having a notch portion, which is rotated to adjust the opening length of the aggregate discharge port in the width direction of the work vehicle. 16. aggregate bin, in its interior, aggregate bin of claim 15, further comprising means for homogenizing the work vehicle width direction carried-in aggregate. 17. The aggregate discharging device according to claim 15, further comprising an aggregate discharging means for adjusting an aggregate discharging speed at the aggregate discharging port.
Is an aggregate bottle according to item 16 .