JP2000045218A - Spray type surface treatment working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new simple spray surface treatment method at a low cost, having high reliability and to provide a spray surface treatment working vehicle used for the method. SOLUTION: This spray type surface treatment working vehicle sprays, at least, binder and aggregates in this order while advancing in the forward direction. In this case, a binder spray bar extending in the working vehicle width direction and a plurality of binder spray nozzles 2 attached to the binder spray bar are provided rearward from the working vehicle 1 rear wheels and an aggregate bin 3 having an aggregate discharge port which can freely adjusts the opening length in the working vehicle 1 width direction and the opening length in the direction crossing at right angles with the working vehicle 1 width direction is provided in its rearward.

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 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 vehicle that can be constructed.

[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 these, the mixed surface treatment method is to transport an asphalt mixture produced by mixing asphalt and aggregate in a plant to a construction site, and lay it on an aged or degraded road surface to obtain 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 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 a layer composed of bituminous material and a single-layer aggregate is formed 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, for example, a method shown in FIG. That is, in FIG. 16, first, the road sweeper 102 advances on the road surface 101 to be subjected to the surface treatment in the direction of the arrow and cleans the road surface 101.
3 advances, and asphalt as a bonding material is sprayed on the road surface 101. Subsequently, the truck 104 loaded with the aggregate
Moves the vehicle in the direction of the arrow, that is, as the vehicle moves backward, while tilting the carrier and spraying the aggregate on the asphalt layer from the rear. 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 on the asphalt layer, the asphalt layer at that portion adheres to the tire of the truck and becomes thinner, which not only weakens the bonding force between the road surface and the aggregate, but also reduces the tire of the truck 104. This is because the attached asphalt causes a problem such as marking the 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 aggregates cannot be properly sprayed on the sprinkled binder, or the aggregates are sprinkled from a relatively high position of the truck 104, so that the dropped aggregates jump on the road surface, or There was a problem that it rolled and scattered outside the planned spray width. In addition, due to such poor work efficiency, the constructed spray-treated surface treatment layer generally lacks durability, and aggregates scatter in a relatively short time after traffic is released, and scatter into the windshield of an oncoming vehicle. And often caused problems such as obstructing traffic and splattering on roadside houses. 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 extensively as a repair method. 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 another object of the present invention to provide a new spray-type surface treatment work vehicle that is simple, inexpensive, and enables a highly reliable spray-type surface treatment layer to be constructed efficiently.

[0008]

Means for Solving the Problems The inventors of the present invention have repeatedly studied a spraying type surface treatment method which is rich in durability, and as a result, it has been found that the means for spraying the binder and the means for spraying the aggregate are combined into one work vehicle. By mounting and moving the 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 dramatically improved. However, they have found that a spray-type surface treatment layer can be efficiently constructed in an extremely short time, and completed the present invention.

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

In the present invention, since the means for distributing the binder and the means for dispersing the aggregate are provided on one work vehicle and behind the rear wheel, the work vehicle can be efficiently moved forward. It is possible to spread the binder and the aggregate on the road surface in this order. Since the tire of the work vehicle does not step on the sprinkled binder, the binder is attached to the tire and becomes thin, and the bonding force between the road surface and the aggregate is weakened.
No other road surface is stained by the binder 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.

In the conventional spraying type surface treatment method, asphalt as a binder and aggregate are spread separately by using separate vehicles, so that the spread of the binder and the The time until 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 an asphalt distributor before spraying, but once sprayed on a 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 variation, it is considered that the variation directly affects the degree of adhesion between the aggregate and the bituminous material, and thus affects the durability of the constructed surface treatment layer. 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.

According to the work vehicle of the present invention, since the spray nozzle for the binder and the aggregate bin are mounted on a single work vehicle and further behind the rear wheels of the vehicle, one work vehicle is used. In the forward direction, it is possible to consistently distribute the binder and the aggregate. The application of the aggregate is performed within a substantially fixed short time after the application of the binder, and preferably at an almost constant short time interval from the application of the binder, and as a result, a uniform and durable spray-type surface treatment layer is applied. Can be easily constructed. In order to make the time between the application of the binder and the application of the aggregate almost constant, the work vehicle can be advanced at a constant speed when the distance between the spray nozzle for the binder and the aggregate bin is constant. If the speed of the work vehicle changes, the distance between the binder spray nozzle and the aggregate bin may be changed according to the speed of the work vehicle, or the spray nozzle for the binder may be changed. May be changed. 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 is possible to construct a uniform and 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 refers to an end of the crawler on the vehicle rear side.

The work vehicle of the present invention may be provided with a binder tank, and the binder may be sprayed from a plurality of spray nozzles onto a road surface by a pumping means such as a pump from the binder tank. The binder supply vehicle may be located behind the vehicle, and may be scattered 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 spray nozzles are positioned substantially linearly in the width direction of the working vehicle, and the amount and width of spraying the binder can be changed as appropriate.

The aggregate bin (bi) mounted on the working vehicle of the present invention
n) has an aggregate outlet that can freely adjust the opening length in the working vehicle width direction and the opening length in the direction orthogonal to the working vehicle width direction. The opening length in the orthogonal direction is adjusted, for example, by an opening / closing door for adjusting the amount of aggregate spraying that moves in a direction orthogonal to the width direction of the work vehicle, and the opening length of the aggregate outlet in the work vehicle width direction is, for example, It is adjusted by an opening / closing door for adjusting the aggregate scatter width having a notch, which moves or rotates in a direction orthogonal to the width direction of the work vehicle. Thus, by providing the opening / closing door for adjusting the amount of aggregate sprayed, the amount of aggregate sprayed from the aggregate bin to the road surface can be appropriately changed according to the type of aggregate, work conditions, and the like. For example, even when the speed of the work vehicle changes, it becomes possible to always spray a certain amount of aggregate on the road surface in conjunction with the speed of the work vehicle. In addition, by providing the opening / closing door for adjusting the aggregate scatter width, the scatter width of the aggregate can be appropriately changed, and the appropriate aggregate scatter can be performed 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 from the aggregate discharge port per unit time by adjusting the operation speed such as the rotation speed, and mainly cooperates with the opening and closing door for adjusting the amount of aggregate sprayed. In addition, it ensures that a certain amount of aggregate is always sprayed even when the speed of the work vehicle changes.

The aggregate bin mounted on the working vehicle of the present invention is desirably provided with a means such as a screw conveyor for uniformizing the carried-in aggregate in the width direction of the working vehicle. After the aggregate is sufficiently homogenized in the width direction of the working vehicle in the aggregate bin, the aggregate can be more uniformly dispersed by spraying the aggregate from the aggregate discharge port onto the road surface.

The aggregate bin mounted on the working vehicle according to the present invention includes:
Since it has an aggregate outlet in the vicinity of the road surface, it is possible to spray the aggregate from a relatively low position, which is different from the conventional case where the aggregate is sprayed from a high position on a dump truck. Thus, there is no danger that the dispersed aggregate will scatter or roll and scatter outside the construction width.

In the work vehicle according to the present invention, since the means for dispersing the binder and the means for dispersing the aggregate are mounted on a single vehicle, the amount and width of dispersion of the binder and the aggregate are related to each other. It is easy to unify and control.

It is desirable that the work vehicle of the present invention be provided with a spray nozzle of an auxiliary material in proximity to the spray nozzle of the binder. Alternatively, for example, a multi-head gun nozzle or the like may be provided as a device capable of simultaneously spraying the binder and the auxiliary material. The auxiliary material is sprayed as necessary 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 primer, and first spray water or primer on the road surface, and then spray the binder. Also, by mounting a heating means behind the aggregate bin and heating the road surface immediately after the aggregate is sprayed, the decomposition of the binder is accelerated, and a stronger surface treatment layer can be constructed in a short time. .

Further, the work vehicle of the present invention is provided with one or two or more binder spray bars each having a plurality of spray nozzles and aggregate bins. On the road surface, combine the binder and the aggregate
Alternatively, it is also possible to spray two or more times. In that case, the number of times of application of the binder and the aggregate may be the same or different, and the binder and the aggregate to be applied may be different in type, particle size, amount of application, etc. for each application. Good or the same.

Hereinafter, the spray type surface treatment vehicle of the present invention will be described with reference to the drawings, but it is needless to say that the present invention is not limited to those described in the drawings.

[0023]

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

The spray nozzle 2 is provided with a spray bar 5 provided in the width direction of the working vehicle 1 as shown in FIG.
Are provided in the width direction of the work vehicle 1.
Each of the spray nozzles 2a, 2b,... Is provided with a valve 6a, 6b,.
By opening and closing 6b,...
The injection of the binder from a, 2b,... can be started or stopped. In the example of FIG. 2, the valve 6a provided in the spray nozzle _2a 1 to 2A region ₄ of the left half in FIG. 2
Reference numerals _{1 to} 6a ₄ are connected to an operating punch 7, and open or close all at once according to the operation of the air cylinder 8. On the other hand, the spray nozzles 2b, 2c,.
The operations b, 6c,... can be individually and independently controlled by air pressure. 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 8, the valve 6a ₁ ～6A ₄ simultaneously open, it may be sprayed with a binder in a portion of a predetermined width of road surface from the spray nozzle 2a ₁ to 2A region _4. The spray width is displayed on the control panel in real time. To increase the spraying width, only the necessary valves 6b or 6f may be operated by air pressure to spray the binder from the spray nozzles 2b or 2f. In the case of this figure, the spray nozzle 2 located in the left half of the work vehicle 1
Although a _{1 to} 2a ₄ are opened and closed collectively, all the spray nozzles 2a _{1 to} 2f may be individually opened and closed, or by changing the number of spray nozzles that open and close simultaneously. Is also good. In the illustrated example, a valve that operates by air pressure is shown, but a valve that operates 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 separately provided upstream of the spray bar 5, and the 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 attachment members 9 and 9. Numeral 10 denotes a hydraulic cylinder for raising and lowering the entire aggregate bin 3 in an arc around the mounting members 9 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, maintenance management of the spray nozzle 2 for the binder and the like inside the work vehicle 1 is easier than the aggregate bin 3.

Numeral 11 designates an aggregate receiving port, into which the leading end of an aggregate conveying conveyor indicated by reference numeral 12 in FIG. 1 is inserted. Reference numeral 13 denotes a vibration imparting device, which imparts an appropriate vibration to the aggregate bin, thereby making the distribution of the aggregate uniform, preventing the aggregate from agglomerating, and smoothing the discharge of the aggregate. it can. Reference numeral 14 denotes an aggregate-spreading amount adjusting door, and reference numeral 15 denotes an operation lever for adjusting the opening degree of the aggregate discharge port 17 in cooperation with an aggregate-spreading width adjusting door indicated by reference numeral 16. Reference numeral 18 denotes an aggregate discharge roll as an aggregate discharge means.

Next, referring to FIGS. 4 and 5, the functions of the aggregate-spreading-amount adjusting door 14, the aggregate-spreading-width adjusting door 16, and the aggregate discharging roll 18 will be described. The aggregate spraying amount adjusting door 14 is operated, for example, by a rack and pinion mechanism.
Can be moved up and down in response to the operation, 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 degree of opening and closing of the aggregate spraying amount adjusting door 14 can be adjusted from the driver's seat of the work vehicle 1 by operating a panel or driving a driving unit (not shown) according to a predetermined program. The basic amount of the aggregate discharged from the aggregate discharge port 17 is determined by the degree of opening and closing of the aggregate spraying amount adjustment door 14.

On the other hand, the aggregate spraying width adjusting door 16 has a cylindrical shape in the illustrated example, and a part of the cylindrical shape is cut off with a curved line. Therefore, by rotating the aggregate spray width adjusting door 16, the opening length of the aggregate discharge port 17 in the width direction of the work vehicle 1 changes, and the aggregate spray width is adjusted. The rotation angle of the aggregate-spreading width adjusting door 16 can be manually adjusted by operating a lever (not shown), and similarly to the aggregate-spreading amount adjusting door 14, a panel from the driver's seat of the work vehicle 1 can be used. It can be adjusted by operation or by driving the driving means according to a predetermined program. Further, if an angle scale indicating the rotation position or an aggregate scatter width scale indicating the rotation position in terms of the aggregate scatter width is attached to the side surface of the aggregate scatter width adjustment door 16, 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 16 is not limited to a cylindrical one, and for example, as shown in FIG. 6, an aggregate-spreading width adjusting door 16 in which a plate-shaped one is cut out with a curve may be used. In the case of such a plate shape, the aggregate-spreading width adjusting door 16 moves up and down in parallel with the aggregate-spreading amount adjusting door 14.

The discharge and dispersion of the aggregate from the aggregate bin 3 are basically performed by the above-described aggregate spray amount adjusting door 14 and the aggregate spray width adjusting door 1.
For example, if it is desired to perform finer aggregate discharge control in accordance with the traveling speed of the work vehicle 1, for example, an aggregate discharge means such as an aggregate discharge roll 18 may be used. Is desirably provided. The aggregate discharge roll 18 has irregularities 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. Discharge and spray. Instead of the unevenness, 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 18, the discharge speed of the aggregate can be adjusted.
, A constant amount of aggregate can always be sprayed on the road surface regardless of the speed of the work vehicle 1. The shape of the aggregate discharge roll 18 is shown in FIG.
Although FIG. 5 shows a circular cross section, the cross section may be an oval or polygonal shape.

The aggregate outlet 17 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 7 to the road surface, the aggregate bounces on the road surface,
There is no risk of splattering or rolling and splattering outside the construction width. It is also possible to provide the entire aggregate bin 3 so as to be movable up and down. 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.

As shown in FIG. 1, an aggregate hopper 19 is provided at a front portion of the working vehicle 1.
The aggregate once accumulated in 9 is transported by the aggregate transport conveyor 12 to the aggregate bin 3 located at the rear of the work vehicle.
Examples of the aggregate transport conveyor 12 include a belt conveyor, a screw conveyor, a bar conveyor, and a bucket conveyor.
Any transporting means capable of transporting the aggregate may be used.

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

In FIG. 1, reference numeral 21 denotes an auxiliary material spray nozzle which is a means for spraying the auxiliary material. For example, as shown in an enlarged view in FIG. Are provided in the width direction of the work vehicle 1. The position of the spray nozzle 21 is
The spray nozzle 2 may be located behind the work vehicle or the spray nozzle 2 may be located ahead of the work vehicle. The bonding material sprayed from the spray nozzle 2 and the auxiliary material sprayed from the spray nozzle 21 may be provided at an angle such that they are 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 at the same time as the binder, but if the mixing is performed very quickly, the auxiliary material may be sprayed immediately before or immediately after the binder is sprayed.

The spray amount or spray width of the auxiliary material from the spray nozzle 21 can be changed by opening and closing the valve 23 provided on each spray nozzle 21 or adjusting the opening degree thereof. Normally, since the auxiliary material is always used as a pair with the binder, the amount and width of the auxiliary material sprayed from the spray nozzle 21 should be changed in conjunction with the amount and width of the binder. Is preferred. For example, as shown in FIG. 8, the opening / closing operation of the auxiliary material valve 23 is linked with the opening / closing operation of the coupling material valve 6, and both are connected to the operating punch 7. , Can be simultaneously opened and closed. 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.
.., 2c,... can be individually corresponded and connected, and can be opened and closed in pairs.
With this configuration, it is possible to always change the dispersion width of the auxiliary material in conjunction with the dispersion width of the binder. The amount of the auxiliary material sprayed from the individual spray nozzles 21 may be adjusted by adjusting the opening degree of the valve 23. However, similarly to the binder, the amount of the auxiliary material is separately provided upstream of the spray bar 22 such as a valve. It is preferable to provide the means described above, and to adjust the opening degree of the valve.

Returning to FIG. 1, reference numeral 24 denotes a binding material delivery socket to which a connecting pipe from a binding material supply vehicle (not shown) subsequent to the work vehicle 1 is connected, and reference numeral 25 denotes a binding material transport 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 sprayed by a binder transport pump 25 or other pumping means as appropriate. 2 may be sent. Spray nozzle 2 with binder
The speed of the work vehicle 1 is changed by changing the rotation speed of the binder conveying pump 25 to be sent to the vehicle, or the pumping speed of the other pumping means in accordance with the speed of the work vehicle 1.
It is possible to always spray a predetermined amount of binder.

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

Reference numeral 26 denotes an auxiliary material tank. The auxiliary material is supplied to the spray nozzle 21 from the auxiliary material tank 26 by a pumping means such as a pump (not shown). Of course, the auxiliary material tank 26 and the pipeline of the auxiliary material can be provided with appropriate heating or heat retaining means as needed.
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 27 denotes a nozzle for spraying water or primer, and the water or primer is sprayed on the road surface before spraying the binder. 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 28 and are appropriately selected and used.

In FIG. 1, reference numeral 29 denotes a heating device which can be easily attached to and detached from the rear portion of the aggregate bin 3 with a single touch together with the work step 30. The heating device 29 heats the road surface after the aggregate is scattered, accelerates the decomposition or solidification of the binder, and can build a stronger surface treatment layer in a short time. Reference numeral 31 denotes a push roller for pushing an aggregate supply vehicle (not shown), and the push roller 31 pushes the aggregate supply vehicle forward.
The work can be continuously performed while receiving the supply of the aggregate from the aggregate supply vehicle. Of course, traction means may be provided between the work vehicle 1 and the binder supply vehicle.

The spray type surface treatment layer by the spray type surface treatment work vehicle of the present invention is constructed, for example, as shown in FIG. That is, the road surface 1 is
After cleaning the work vehicle 01 as necessary, the water or primer 32 is first sprayed from the nozzle 27 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 (not shown). Subsequently, the binder 33 is sprayed from the binder spray nozzle 2. At the same time, the auxiliary material 34 is sprayed from the spray nozzle 21 and mixed with the binder 33 in the air, and the binder 33 and the auxiliary material 34 are placed on the road surface 101.
Is formed in the form of a film. 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 the binder to spray the binder 33 and the aggregate bin 3 to spray the aggregate 35 are attached to the same work vehicle 1. Since the spray nozzle 2 for the binder and the aggregate bin 3 are mounted on the same vehicle, the distance between them is usually constant, and as long as the working vehicle 1 moves forward at a constant speed, the binder 33 is used.
The time from when is dispersed until the aggregate 35 is dispersed is constant. 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 binder 33 to the application of the aggregate 35 is within a certain time, preferably within a short time, more preferably within a certain short time and as long as it is constant, in seconds. Although it may be possible, considering the working efficiency, it is usually within 10 seconds, preferably within 6 seconds, 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.

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 scattered 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 ). 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.

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 maintain, spray nozzle 2 for binder
May be changed in accordance with the speed of the work vehicle 1. That is, when the speed of the work vehicle 1 is reduced, the distance between the binder spray nozzle 2 and the aggregate bin 3 is reduced. Conversely, when the speed of the work vehicle 1 is increased, the spray nozzle for the bond is reduced. By increasing the distance between 2 and the aggregate bin 3, the time from when the binder 33 is sprayed to when the aggregate 35 is sprayed 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 time from the application of the binder to the application of the aggregate is within a predetermined time, the speed of the work vehicle may slightly vary.

The amount of water or primer, binders, auxiliary materials and aggregates 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 The application amount is varied so that the binder, auxiliary material, or aggregate is applied.

Further, the spray width can be changed at any time.
Specify the spray width on the control panel, or
It is also possible to use a control box as shown in FIG. That is, in FIG.
6a, 36b,... Correspond to the individual sections of the scatter width, and the respective operation keys become effective when rotated by a predetermined angle from the position shown in the drawing. 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 spraying amount, spraying width, and the working state of the work vehicle are monitored in real time on the control panel, and are stored or recorded as appropriate.

In the working vehicle 1 of the present invention, the water or the primer 32 is sprayed, the bonding material 33 and the auxiliary material 34 are sprayed so that the bonding material 33 and the aggregate 35 are sprayed to the construction site without any excess or shortage. And the dispersal of the aggregate 35
Start with a predetermined time difference according to the speed of
The processing ends with a predetermined time difference.

In the example shown in FIG. 10, the row of the plurality of binder spray nozzles 2 attached to the binder spray bar 5 is one row and the aggregate bin 3 is one. And the number of aggregate bins 3 are not limited to one, and two or more may be provided as long as they are behind the rear wheels 4b of the work vehicle 1. For example, one row of the binder spray nozzles 2 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 passing the work vehicle once. You can also. Further, the number of rows of the spray bars 2 and the number of the aggregate bins 3 are not necessarily the same, and two or more aggregate bins 3 are provided for one row of the spray bars 2 to form a single binder. On the layer, for example, two or more types of aggregates having different particle sizes may be sprayed,
Conversely, two or more rows of spray bars 2 may be provided for one aggregate bin 3 to spray a large amount of various kinds of binder. Thus, by using the working vehicle of the present invention,
By passing the work vehicle once, various kinds of binders and aggregates are changed on the road surface 101 by changing the type, the particle size, the amount of spraying, and the like.
It can be sprayed once or twice or more, and a desired spray-type surface treatment layer can be constructed at once. Furthermore, it is not necessary to always use all the rows of the plurality of spray bars 2 and the aggregate bins 3 provided, and only the necessary one of them may be used. In the above case, the binder, the auxiliary material, and the aggregate that are sprayed once or twice or more may have the same type, particle size, spray amount, or the like,
Each may be different.

Here, the apparatus for dispersing the bonding material and the apparatus for distributing the auxiliary material used in the spray type surface treatment work vehicle of the present invention will be further described. FIG. 12 shows a spray type surface treatment method according to the present invention. Of the binder and auxiliary material spraying equipment,
FIG. 6 is a diagram showing only the bonding material spraying device taken out,
The same components as those in the previous drawings are denoted by the same reference numerals. 5
Denotes spray bars for dispersing the binder as in the previous figures, and 2-1 2-2, 2-3,... Denote spray nozzles for dispersing the binder attached to the spray bar 5. . Also, 33-1, 33-2, 33-3, ...
Is a binder injected from each spray nozzle. Any type of spray nozzles may be used as the spray nozzles 2-1, 2-2, 2-3,..., For example, a spray nozzle having a circular full-surface spray pattern or a square full-surface spray nozzle. It may have a shape-shaped spraying pattern, a ring-shaped spraying pattern, or other spraying patterns, but from the viewpoint of achieving uniform spraying, FIG.
It is desirable to use a spray nozzle having a flat spray pattern as shown in FIG. The flat spray pattern is a substantially linear spray pattern in which a cross section perpendicular to the spray direction is elongated in a fan shape at a certain spray angle α from a spray nozzle, and in this specification, the flat spray pattern is The flat surface refers to the surface of the fan in the fan-shaped spray pattern.

FIG. 13 is a plan view of FIG. 12 as viewed from above. As shown in FIG. 13, flat spray nozzles 2-1, 2-2, 2-3,. Are arranged such that the flat surface of the spray pattern of the sprayed binders 33-1, 33-2, 33-3,... Has 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 as long as it is in the range of 0 to 90 degrees.
From the viewpoint of canceling the non-uniformity by overlapping the spray pattern from each spray nozzle, usually 5 to 45 degrees,
Preferably, it is 10 to 40 degrees, more preferably 15 to 35 degrees.
Range of degrees. It is preferable that the mounting angle β of the spray nozzle is the same in one spray bar.

As shown in FIGS. 12 and 13, the binders 33-1, 33-2, 33-3 sprayed from the spray nozzles 2-1, 2-2, 2-3,... .. Partially overlap each other when viewed from a horizontal direction orthogonal to the longitudinal direction of the spray bar 5. For example, FIG.
In the case of FIG. 13, each of the injected bonding materials 33-1 and 33
, 33-3,...
They overlap by three. The spraying type surface treatment work vehicle of the present invention equipped with such a spraying device for a binder comprising the spray bar 5 and the spray nozzles 2-1, 2-2, 2-3,. Since the vehicle travels in a direction perpendicular to the direction, when viewed from a certain point on the road surface 101, for example, point A, the binders 33-4, 33-3 ejected from the spray nozzles 2-4, 2-3, 2-2. , 33-2. Therefore, point A is three times for convenience, that is,
You will receive triple application. The overlapping number of overlapping spraying is not limited to triple, and may be double or quadruple or more, but if uniformity of the binder to be sprayed is required, triple or quadruple or more, at least double It is preferable to spray. Needless to say, the overlapping number of the spray 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.

Now, in addition to the above-described apparatus for dispersing the binder, the apparatus for distributing the auxiliary material used in the dispersing type surface treatment method of the present invention is preferably provided, for example, as shown in FIG. FIG. 14 is a side view showing a preferred side-by-side state of the dispersing device for the binder and the dispersing device for the auxiliary material. The spray nozzle 21 for the auxiliary material attached to the spray bar 22 for the auxiliary material has a tip. The bent auxiliary material 34 is 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 top view of the apparatus of FIG. 14. As shown in FIG. 15, in the apparatus used for the spray type surface treatment method of the present invention, one spray nozzle of the binder is used. A single auxiliary material spray nozzle corresponds to, for example, the bonding material 33-1 sprayed from the bonding material spray nozzle 2-1 is connected to the auxiliary material spray nozzle 21-1. The injected auxiliary material 34-1 collides in the air, and the bonding material 33-2 sprayed from the bonding material spray nozzle 2-2 is attached to the auxiliary material spray nozzle 21-.
The auxiliary member 34-2 ejected from the nozzle 2 collides in the air. Spray nozzles 2-1 and 2- for a binder in which the injected binder or auxiliary material collides with each other in the air.
2, spray nozzles 21-1 and 21 for auxiliary materials
The correspondence between -2, ... is extremely strict,
The two correspond one-to-one. For example, the auxiliary material 34-2 injected from the auxiliary material spray nozzle 21-2 is combined with the bonding material 33- sprayed from the corresponding bonding material spray nozzle 2-2. 2 collides in the air, and does not collide with the binder injected from another spray nozzle for the binder.

The 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 between 2,... Is realized as follows. For example, in FIG. 15, the auxiliary material 3 injected from the auxiliary material spray nozzle 21-1 is used.
In the case of 4-1 as an example, between the injected auxiliary material 34-1 and the corresponding bonding material 33-1, the bonding material 33- sprayed from the spray nozzle 2-2 for the non-corresponding bonding material. 2 exists, and the injected binder 33-2 is, for example, as shown in FIG.
As shown in FIG. 2, since the auxiliary material 34-1 has a fan-shaped spreading shape, the injected auxiliary material 34-1 passes above the inclined flared shoulder portion of the bonding material 33-2 and is bonded. Lumber 3
What is necessary is just to make it collide with 3-1. That is, in FIG. 12, as viewed from a horizontal direction orthogonal to the longitudinal direction of the spray bar 5, a horizontal line is formed from an intersection x between the right shoulder of the injected binder 33-1 and the left shoulder of the injected binder 33-2. Is shown as a line segment X, but the auxiliary member 34-1 sprayed from the auxiliary material spray nozzle 21-1 in FIG.
However, if it passes over the bonding material 33-2 at a position higher than the line segment X in FIG. 12, the spray nozzles for the bonding material and the spray nozzles for the auxiliary material have a one-to-one correspondence. be able to. .. And the auxiliary material spray nozzle 21- so that the injected binder and auxiliary material have such a positional relationship. Are arranged, for example, the auxiliary material 34-3 sprayed from the auxiliary material spray nozzle 21-3 is changed to the bonding material spray nozzle 2-3. 33-3 sprayed from
And the binder 33-2 or 3 ejected from the adjacent spray nozzle 2-2 or 2-4 for another binder.
It will not collide with 3-4.

The auxiliary material spray nozzle 21-1
Is usually obliquely downward, so that the auxiliary material 34-1 has the auxiliary material 34-1 in the foreground.
12, the collision position between the binder 33-1 and the auxiliary member 34-1 on the binder 33-1 is shown in FIG. As shown by Y, it can be lowered to a position slightly lower than the line segment X. However, since a large number of 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 higher than the line segment X.

If the collision position Y between the bonding material and the auxiliary material is too low, the time from the collision of the bonding material with the auxiliary material to falling on the road surface and losing momentum is too short, resulting in uniform mixing. Is too high, and if it is too high, the injected binder and auxiliary material both collide in a state where they are still 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 H is preferably in the range of １ ／ H to ／ H, more preferably in the range of ／ H to ／ H.

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 are formed. The one-to-one correspondence makes it easy to control the collision ratio, such as the quantitative ratio of the colliding binder and the auxiliary material, the collision speed, and the collision position. It is possible to cause collision at a ratio and under optimum collision conditions. As a result, extremely uniform mixing of the two is realized, and when the auxiliary material is, for example, a decomposition accelerator for the binder, a shorter curing time can be realized.

In the apparatus used in the spray type surface treatment method of the present invention, as shown in FIG.
-1, 34-2, 34-3,... Move toward the corresponding binders 33-1, 33-2, 33-3,. ... Injection is performed so that the above injection density becomes uniform. That is, the auxiliary members 34-1, 34-2, 34-3,... In the plan view of FIG.
-1, 33-2, 33-3,... Vertical planes Z1, Z2, Z3,.
・ The bonding material 33-
1, 33-2, 33-3,... Thereby, each of the collision positions Y1, Y2, Y3,.
..Auxiliary materials 34-1, 34-2, 34-3,.
Is uniform over the entire width direction of the collision positions Y1, Y2, Y3,..., And 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 injected substantially perpendicularly to the road surface. Conversely, the auxiliary material is injected perpendicularly to the road surface. Then, the binder may be made to collide obliquely with the auxiliary material, and furthermore, both the binder and the auxiliary material may be obliquely ejected and collided. However, considering that the amount of the binder is larger and the main material, the auxiliary material obliquely collides with the binder injected substantially perpendicularly to the road surface as in the example described above. Is preferred.

As described above, when the bonding material and the auxiliary material are made to correspond to the respective spray nozzles on a one-to-one basis, and the bonding material and the auxiliary material are caused to collide in the air, extremely uniform mixing of the two is achieved. Since it can be realized quickly, for example, when using a decomposition accelerator that promotes the decomposition of the binder as an auxiliary material, even when using an asphalt emulsion that requires a relatively long time for decomposition as the binder, a short curing time is required. It is possible to construct a strong and durable spray-type surface treatment layer, and early traffic opening is possible.

The spraying type surface treatment vehicle of the present invention comprises:
It is mainly used for repairing existing pavements, but is not limited to repairing.It is not limited to repairing, and it is possible to use colored aggregates to build a colored surface layer on existing or new pavements, or to use light reflection. It can also be used to build a light-reflective surface layer on existing or new pavements using aggregating materials. According to the spraying type surface treatment work vehicle of the present invention,
The surface layer composed of the binder and the aggregate can be constructed inexpensively with a simple operation continuously and efficiently.

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

(Example 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 moving all the vehicles forward. Was carried out. Prior to construction, the road surface is cleaned with a road sweeper, and then the aggregate supply vehicle, the work vehicle of the present invention,
The vehicle was advanced at a constant speed of 30 m / min in the order of the binder supply vehicle. The distance between the binder spray nozzle and the aggregate bin is 1
m, the time from the application of the binder to the application of the aggregate was about 2 seconds. After the binder supply vehicle, rolling was performed using an iron wheel roller and a tire roller in combination, and finally the floating stone was 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: Crushed stone No. 6 (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.

[0067]

[Table 1]

(Example 2) The same working vehicle, aggregate supply vehicle, and binder supply vehicle were used. However, while the distance between the binder supply spray nozzle and the aggregate bin was kept constant, the forward speed was varied. By changing the time from when the binder is scattered to when the aggregate is scattered, except that it is within a fixed time of about 10 seconds or less, except that it randomly changes between them.
In the same manner as in Example 1, a surface treatment layer was constructed on a 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 sprayer, was moved backward, and the binder was sprayed. 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 inspected and the feeling of the driver or spatula was examined.

After curing one day and night, a heavy load was loaded on a large test vehicle, and the surface treatment layer constructed by the above-described Examples 1, 2 and Comparative Example 1 was applied at a speed of 30 km / h. 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 first embodiment, whereas the scattering of the aggregate was slightly found in the rut of the test vehicle in the section of the second embodiment. 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 with the tip of a screwdriver or a spatula, but in the sections of Example 1 and Example 2, it was difficult to peel off the aggregate at all places. 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, the result coincides with the result that a large number of traces of aggregate due to vehicle passage were found, indicating that there are places where the bonding force between the road surface and the aggregate is insufficient. Also,
In the section of the second embodiment, as in the section of the first embodiment, although it was difficult to remove the aggregate, the aggregate in the section of the second embodiment was slightly increased depending on the passage of the test vehicle. There was no shortage of the bonding force between the aggregate and the road surface, but the time between the application of the aggregate and the application of the aggregate fluctuated. It is presumed that a portion where the force is not uniform occurs, and therefore, when passing through the vehicle, the vehicle load is concentrated on a portion where the bonding force is weak, and the aggregate has been 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: 23 ° C. Spraying amount Example 3, Example 4 and Example 4 in the same manner as in Example 1, Example 2 and Comparative Example 1 except that the spraying temperature of the aggregate was 21 ° C. and 1.32 (l / m ² ). A 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 SP cation used as the binder.

[0074]

[Table 2]

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 by the above Examples 3, 4 and Comparative Example 2. 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 with the tip of a screwdriver or a spatula. However, in the sections of Examples 3 and 4, it was difficult to peel off the aggregate at all places. 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, the number of scattered traces of the aggregate due to the passage of the vehicle coincided with the result that was found, indicating 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 the fourth embodiment, as in the section of the third embodiment, although it was difficult to remove the aggregate, the aggregate of the aggregate in the section of the fourth embodiment was slightly increased depending on the passage of the test vehicle. There was no shortage of the bonding force between the aggregate and the road surface, but the time between the application of the aggregate and the application of the aggregate fluctuated. It is presumed that a portion where the force is not uniform occurs, and therefore, when passing through the vehicle, the vehicle load is concentrated on a portion where the bonding force is weak, and the aggregate has been scattered.

[0078]

As described above, according to the spray type surface treatment work vehicle of the present invention, a uniform and durable surface treatment layer can be easily and efficiently constructed while advancing the vehicle in the forward direction. Is possible. In addition, since the means for dispersing the binder and the means for dispersing the aggregate are mounted on a single vehicle, the dispersal of the binder and the aggregate can be related to each other and managed as a consistent process. The time interval from the application of the binder to the application of the aggregate can be set within a certain time, preferably not only a certain time, but also the control of the change of the application width, the start and end timing of application It is possible to do.

Further, if the spray type surface treatment vehicle of the present invention is used, the construction can be performed continuously while the aggregate and the binder are supplied from another aggregate supply vehicle and the binder supply vehicle. Even in a long construction section, a uniform surface treatment layer can be constructed without interruption. The spray type surface treatment work vehicle of the present invention is not limited to the construction of a surface treatment layer for repair,
The present invention is extremely useful and extremely useful because it can be used when constructing a surface layer composed of a binder and an aggregate on all pavements, regardless of whether they are existing or new.

[Brief description of the drawings]

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

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

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

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

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

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

FIG. 7 is a view showing a transport route of the aggregate.

FIG. 8 is a view showing a relationship between a spray nozzle for a binder and a spray nozzle for an auxiliary material.

FIG. 9 is a view showing a relationship between a spray nozzle for a binder and a spray nozzle for an auxiliary material.

FIG. 10 is a view showing a construction example using the spray type surface treatment 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 an apparatus for dispersing a binder.

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

FIG. 14 is a side view showing an example of a positional relationship between a binder sprinkling device and an auxiliary member sprinkling device.

FIG. 15 is a plan view showing an example of a positional relationship between a binder sprinkling device and an auxiliary member sprinkling device.

FIG. 16 is a view showing a conventional method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Work vehicle 2,21,27 Spray nozzle 3 Aggregate bin 4a, 4b Work vehicle tire 5,22 Spray bar 6,23 Valve 7 Operating punch 8 Air cylinder 9 Mounting member 10 Hydraulic cylinder 11 Aggregate receiving port 12 Aggregate Conveying conveyor 13 Vibration imparting device 14 Aggregate scatter amount adjusting door 15 Operating lever 16 Aggregate scatter width adjusting door 17 Aggregate discharge port 18 Aggregate discharge roller 19 Aggregate hopper 20 Screw conveyor 24 Binder carrying socket 25 Bind material transfer Pump 26 Auxiliary material tank 28 Water / primer tank 29 Heating means 30 Working step 31 Push roller 32 Water / primer 33 Binder 34 Auxiliary material 35 Aggregate 36 Operating key 37 Spreading width control bar 38 Spreading width control pin 39 Starting lever 40 Braking lever 101 road surface 1 2 loaded sweeper 103 injection angle β mounting angle of the spray nozzle of the asphalt distributor 104 dump truck 105 Roller α spray nozzles

Claims (18)

[Claims] Claims 1. At least a binder and an aggregate are provided in this order.
A spray type surface treatment work vehicle that spreads on a road surface while traveling in a forward direction, comprising: a binder spray bar extending in a width direction of the work vehicle; and a plurality of binder spray nozzles attached to the binder spray bar. Is provided behind the rear wheel of the work vehicle, and further behind the aggregate has 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. A spray-type surface treatment vehicle equipped with a bottle. 2. The spray-type surface treatment work vehicle according to claim 1, wherein the aggregate bin is provided with means for equalizing the carried-in aggregate in the width direction of the work vehicle. 3. An aggregate spraying amount adjusting door for moving an aggregate bin in a direction orthogonal to the work vehicle width direction to adjust an opening length of the aggregate discharge port in a direction orthogonal to the work vehicle width direction; An aggregate sprinkling width adjusting door having a notch, which moves or rotates in a direction orthogonal to the working vehicle width direction to adjust an opening length of the aggregate discharging port in the working vehicle width direction, is provided. 3. The spray type surface treatment vehicle according to 1 or 2. 4. The spray-type surface treatment work vehicle according to claim 1, wherein the aggregate bin is provided with an aggregate discharge means for adjusting an aggregate discharge speed at an aggregate discharge port. 5. The spray-type surface treatment vehicle according to claim 1, wherein the aggregate bin is provided with a vibration imparting device. 6. The spray-type surface treatment according to claim 1, further comprising an aggregate hopper in front of the work vehicle, and a means for transporting the aggregate from the aggregate hopper to the aggregate bin. Working vehicle. 7. The dispersion amount and width of the binder can be adjusted, and at least the dispersion width of the binder and the aggregate can be changed in conjunction with each other. Or a spray-type surface treatment vehicle according to 6. 8. The spray-type surface treatment vehicle according to claim 1, further comprising a bonding material carrying socket and / or a bonding material tank. 9. An auxiliary material spray bar, and a plurality of auxiliary material spray nozzles attached to the auxiliary material spray bar, wherein at least the auxiliary material spray nozzle,
The vehicle is provided at a position behind the rear wheel of the working vehicle and close to the spray nozzle for the binder.
The spraying type surface treatment work vehicle according to 5, 6, 7 or 8. 10. The spray type surface treatment vehicle according to claim 9, wherein the binder spray nozzle and the auxiliary material spray nozzle are provided in such a positional relationship that the binder and the auxiliary material collide in the air. . 11. The spray-type surface treatment work vehicle according to claim 9, wherein the spray amount and the spray width of the auxiliary material are adjustable, and can be changed in conjunction with the spray amount and the spray width of the binder. 12. A spraying means for spraying water and / or a primer in front of the work vehicle with respect to the binder spray nozzle. Or a spray-type surface treatment work vehicle according to item 11. 13. The vehicle according to claim 1, further comprising a road surface heating means provided behind the work vehicle with respect to the aggregate bin.
The spraying type surface treatment work vehicle according to 9, 10, 11 or 12. 14. A binder spray bar provided with a plurality of spray nozzles and an aggregate bin are respectively connected to one or two spray bars.
Claims 1,2,3,4,5,6,7,
The spray-type surface treatment vehicle according to 8, 9, 10, 11, 12, or 13. 15. A means for detecting the speed of the work vehicle, and based on the detected speed of the work vehicle, a spread amount of the binder or the binder and the auxiliary material, and / or a spread amount of the aggregate and / or Claim 1, 2, 3, having means for adjusting the discharge rate.
The spray-type surface treatment vehicle according to 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, or 14. 16. An aggregate bin having an aggregate discharge port capable of freely adjusting an opening length in a working vehicle width direction and an opening length in a direction perpendicular to the working vehicle width direction, wherein the aggregate bin is orthogonal to the working vehicle width direction. The opening / closing door for adjusting the amount of aggregate spraying that moves in the direction to adjust the opening length of the aggregate discharge port in the direction orthogonal to the width direction of the work vehicle, and moves or rotates in the direction orthogonal to the width direction of the work vehicle. An aggregate-dispersing aggregate bin comprising an aggregate-dispersion-width-adjustment opening / closing door having a notch, which adjusts an opening length of an aggregate discharge port in a work vehicle width direction. 17. The aggregate bin according to claim 16, wherein the aggregate bin is provided with means for equalizing the carried-in aggregate in the width direction of the work vehicle. 18. The aggregate bin according to claim 16, wherein the aggregate bin is provided with an aggregate discharge means for adjusting an aggregate discharge speed at an aggregate discharge port.