JP3434469B2 - Spray-type surface treatment method and spray-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 method and a spray-type surface treatment work vehicle used therefor.
A new, uniform and durable spray-type surface treatment layer can be constructed by consistently performing the spread of the binder and the spread of the aggregate in the forward configuration by one work vehicle. The present invention relates to a spray type surface treatment method and a spray type surface treatment work vehicle used therefor.

[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 the method shown in FIG. 9, for example. That is,
In FIG. 9, the road sweeper 102 first advances in the direction of the arrow to clean the road surface 101 to be surface-treated, and then the asphalt distributor 103 advances to spray asphalt as a binder on the road surface 101. . Then, the truck 104 on which the aggregate is mounted inclines the bed, and while the aggregate is sprayed onto the asphalt layer from the rear portion, the truck 104 travels in the direction of the arrow, that is, in the reverse direction for the vehicle. 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 aggregate and the road surface but also adhering to the tire of the truck 104. This is because the asphalt causes problems such as marking 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 method which is simple and inexpensive and has high reliability, and a spray-type surface treatment work vehicle used in the method.

[0008]

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 spraying device and the aggregate spraying device are combined into one work vehicle. It is equipped with it, and while advancing the work vehicle, by at least consistently performing the spreading of the binder and the spreading of the aggregate, the work efficiency is dramatically increased and the durability of the constructed surface treatment layer is also significantly improved. The present invention has been completed by finding that it is possible to construct a spraying type surface treatment layer which is improved and is efficient, uniform and highly durable in an extremely short time.

That is, according to the present invention, a work vehicle equipped with a binder spraying device and an aggregate spraying device in this order from the front of the vehicle in the rear of the rear wheel of the vehicle is used while the work vehicle is moving forward. , A spraying type surface treatment method for spraying the binder and the aggregate on the road in this order, and the binder spraying device and the aggregate sprayer are provided in this order from the front of the vehicle in the order of the rear wheels of the vehicle. The object is to solve the above-mentioned problems by providing a spraying type surface treatment work vehicle provided at the rear side.

In the present invention, the sprinkler for the binder and the sprinkler 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.

On the other hand, according to the present invention, since the binder spraying device and the aggregate spraying device are provided in one work vehicle, the binder spraying and the aggregate spraying are consistent. The application of the aggregate can be carried out within a substantially constant short time after the application of the binder, preferably at short, almost constant time intervals after the application of the binder, resulting in a uniform distribution. It is possible to construct a spray-type surface treatment layer having high durability. In order to make the time from the spread of binder to the spread of aggregate almost constant, if the distance between the binder spreader installed on the work vehicle and the aggregate spreader is constant, the work vehicle is It suffices to proceed at a constant speed, and when the speed of the work vehicle changes, the distance between the binder spraying device and the aggregate spraying device may be changed according to the speed of the work vehicle. The spraying direction of the spraying device and / or the aggregate spraying device may be changed.
The work vehicle may be a wheel type or a crawler type. In the case of the crawler type, the vehicle rear wheel means the end of the crawler on the vehicle rear side.

In the present invention, the binding material is mounted on a work vehicle by a binding material tank, and is sprayed from the binding material tank to a road surface from a spraying device such as a spray nozzle via a pressure feeding means such as a pump. Alternatively, the binder supply vehicle may be positioned behind the work vehicle, and the binder may be sprayed onto 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 spraying devices such as spray nozzles are positioned substantially linearly in the width direction of the work vehicle, and the spraying amount and spraying width of the binder can be changed as appropriate.

In the present invention, since the time from the spraying of the binder to the spraying of the binder is within a constant time or constant, the binder is supplied in the binder supply vehicle or in the binder tank mounted on the work vehicle. By keeping the state of the aggregate constant, it becomes possible to keep the properties of the binder at the time of spraying the aggregate substantially constant. Further, if the auxiliary material spraying device is mounted on the work vehicle and the auxiliary material and the binder are mixed immediately before the binder is sprayed or at the time of spraying the binder, the property management of the binder is further facilitated.

In the present invention, the aggregate is an aggregate bin (bi
n) is applied. The aggregate bin is mounted on a work vehicle and has means for uniformizing the distribution of the aggregate in the width direction of the work vehicle, and the amount of aggregate discharged and / or the discharge width in the width direction of the work vehicle is provided near the lower portion. It has an adjustable aggregate outlet.
Since the aggregate outlet of the aggregate bin is close to the road surface, it is possible to spray aggregate from a relatively low position. There is no fear of splashing. By making the dispersion width of the aggregate and the dispersion width of the binder change in conjunction with each other, it is convenient to change the construction width with a single operation.

In the present invention, it is possible to position the aggregate supply vehicle in front of the work vehicle and continuously perform the construction while receiving the supply of the aggregate from the aggregate supply vehicle at any time. At the same time, position the above-mentioned binder supply vehicle behind the work vehicle,
If the construction is performed while receiving the supply of the binder from the binder supply vehicle at any time, the three vehicles of the aggregate supply vehicle, the work vehicle of the present invention, and the binder supply vehicle will all advance in the forward direction. However, it is possible to continuously apply the spray-type surface treatment method.

In the present invention, a water and / or primer spraying device may be mounted on a work vehicle, and water or a primer may be sprayed on the road surface first, and then the binder may be sprayed. Further, by mounting a heating means behind the aggregate spraying device and heating the road surface immediately after the aggregate spraying,
It is possible to accelerate the decomposition of the binder and build a stronger surface treatment layer in a short time.

Further, in the present invention, one or two or more binding material spraying devices and one or more aggregate spraying devices are mounted on the work vehicle, and the work vehicle is connected to the road surface by passing the work vehicle once. It is possible to spray the material and the aggregate once or twice or more, respectively. In that case, the number of times of spraying the binder and the number of times of spraying the aggregate may be the same or different, and the type of binder, the aggregate, and the type, the particle size, the amount of spray, etc. are different for each spray. May be the same or the same.

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

[0020]

1 is an explanatory view showing an example of a spraying type surface treatment method of the present invention. In FIG. 1, 1 is a spraying type surface treatment work vehicle of the present invention. Is a spray nozzle 2 for a binder as a binder spraying device,
An aggregate bin 3 as an aggregate spraying device is provided in this order from the front of the work vehicle 1 and behind the rear wheel 4b of the work vehicle 1. Incidentally, 4a is a front wheel of the work vehicle. A plurality of binding material spray nozzles 2 are provided in the width direction of the work vehicle 1 via a spray bar (not shown), and the opening degree of the valve provided in each binding material spray nozzle 2 is adjusted. Alternatively, the spraying amount of the binding material can be changed by adjusting the opening degree of the valve provided in the conduit or by increasing or decreasing the rotational speed of the binding material transporting pump described later. The spreading width can also be adjusted by opening and closing the spray nozzles 2 for the individual binders. As a result, even if the property of the road surface, the speed of the work vehicle 1, or the like changes, it is possible to always spray the optimum amount of the binder. The amount of the binder sprayed may be manually adjusted, or may be automatically changed in conjunction with the speed of the work vehicle 1, for example, by changing the rotation speed of the binder transport pump. You can The spraying device for the binder is not limited to the spray nozzle, and any means may be used as long as it can supply the binder on the road surface in a predetermined amount. For example, when using a low-viscosity binder, it may be simply flowed down toward the road surface from linear openings or appropriately distributed point openings, or it may be applied by a roller or the like. Is also good.

The binder is supplied to the work vehicle 1 from the binder supply vehicle 5 following the work vehicle 1 through the connecting pipe 6. Reference numeral 7 is a binder carrying-in socket to which the connecting pipe 6 is connected, and 8 is a binder carrying pump. In the example of FIG. 1, the work vehicle 1 is not particularly provided with a binder tank,
The binder transported into the working vehicle 1 by the binder transporting pump 8 is directly sent to the spray nozzle 2 for the binder, but a binder tank is provided in the working vehicle 1, and Alternatively, the binder may be temporarily stored, and the stored binder may be sent to the spray nozzle 2 for the binder by the binder conveying pump 8.

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 / m2).
The degree is about 0.7 to 1.5 (l / m2).

In the work vehicle 1, a tank and / or a pipe line portion where the binder is accumulated or passes, including a spray bar and a spray nozzle 2 for the binder, 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 for the binder so as to maintain a predetermined property. Further, since the heating and heat-retaining means including the spray nozzle 2 for the binder is provided in this way, for example, the remaining binder is solidified in the spray nozzle 2 for the binder and clogs the nozzle. Never.

On the other hand, the aggregate is sprayed from the aggregate bin 3.
The aggregate bin 3 has an aggregate discharge port in the vicinity of its lower portion that can adjust the amount and width of the aggregate discharged, so that the amount and width of the aggregate can be freely adjusted. . As a result, even if the type of aggregate, the speed of the work vehicle 1, or the like changes, it is possible to always spray an optimal amount of aggregate. The amount of aggregate sprayed may be adjusted manually, and the work vehicle 1
It may be changed automatically in conjunction with the speed of. The spray width is configured to change in conjunction with the change in the spray width of the binder. In the work vehicle of the present invention, the sprinkling device for the bonding material and the sprinkling device for the aggregate are provided in the same vehicle, so it is easy to link the spreading widths of the bonding material and the aggregate. it can. Since the spraying widths of both are linked, in the work vehicle of the present invention,
There is no possibility of inconvenience that the aggregate is scattered on the road surface on which the binder is not dispersed, or that the aggregate is not dispersed even though the binder is dispersed. This is during construction,
This is especially effective when the construction width must be changed continuously.

The aggregate discharge port is 50 cm at the maximum from the road surface.
Or less, preferably 30 cm or less, more preferably 20 c
Even if the aggregate is dropped toward the road surface by gravity, the aggregate does not splash, scatter or roll on the road surface, and there is no risk of scattering outside the construction width. It is also possible to provide the entire aggregate bin 3 so as to be vertically movable.
The aggregate bin 3 is attached rotatably in the direction of the arrow X around the connection with the work vehicle 1, and is rotated up and down by a hydraulic cylinder (not shown) to spray nozzles 2 for the binder and an auxiliary described later. Maintenance management of the spray nozzle 14 for the material can be easily performed. 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.

Aggregates are provided from the aggregate supply vehicle 9 located in front of the work vehicle 1 to the aggregate hopper 1 provided in the front portion of the work vehicle 1.
It is supplied toward 0. The aggregate supplied to the aggregate hopper 10 is conveyed by the conveyor 11 for conveyance to the aggregate bin 3 located in the rear part of the work vehicle, as shown in FIG. A screw conveyor 12 is provided in the aggregate bin 3, and as the screw conveyor 12 rotates, the aggregate in the aggregate bin 3 is conveyed in the width direction of the work vehicle 1 and the aggregate bin 3 The distribution of aggregates inside is homogenized. In this way, the aggregate is made uniform in the width direction of the work vehicle 1 in the aggregate bin 3 and then sprayed with a predetermined width and a predetermined amount from the aggregate discharge port toward the road surface. The aggregate bin 3 is provided with a vibration imparting device (not shown) so that the distribution of the aggregate in the aggregate bin 3 is made uniform and the aggregate is smoothly discharged from the aggregate discharge port. It is like this.

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 of aggregate may be used, but the particle size is preferably a single particle size.

Returning to FIG. 1 again, the work vehicle 1 is provided with a push roller 13 for pushing the aggregate supply vehicle 9, and when the work vehicle 1 is advanced at a predetermined speed, the push roller 13 causes the aggregate to be aggregated. The supply vehicle 9 is pushed to advance, and the work can be continuously performed while constantly receiving the supply of aggregate. It goes without saying that a traction means (not shown) may be provided between the work vehicle 1 and the binder supply vehicle 5.

In FIG. 1, reference numeral 14 denotes a spray nozzle which is a spraying device for an auxiliary material, and a plurality of spray nozzles are provided in the width direction of the work vehicle 1 through a spray bar (not shown) like the spray nozzle 2 for the binder of the binder. It is provided individually. By adjusting the opening / closing or opening degree of the valve provided in the spray nozzle 14 or the line for each auxiliary material,
Although it is possible to change the spray amount and the spray width, since the auxiliary material is usually used in pairs with the binder, the spray amount and the spray width of the auxiliary material from the spray nozzle 14 for the auxiliary material are the same as those of the binder. It is preferable to change in association with the amount and width of spraying.

The spray nozzle 14 for the auxiliary material is usually
For example, as shown in FIG. 3, the spray nozzle 2 for the binder is used.
Is provided in the vicinity of, and is provided at an angle such that the binder 15 sprayed from the spray nozzle 2 for binder and the auxiliary material 16 sprayed from the spray nozzle 14 for auxiliary material are mixed in the air. The angles do not have to be mixed in the air. The auxiliary material and the binding material may be sprayed at the same time using a spray nozzle of a double-headed gun capable of spraying a plurality of materials at the same time, or may be sprayed after mixing 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.
In the illustrated case, the spray nozzle 14 for the auxiliary material is used.
Is at the vehicle front position of the bonding material spray nozzle 2, but the auxiliary material spray nozzle 14 may be located at the vehicle rear side of the bonding material spray nozzle 2.

Returning to FIG. 1, reference numeral 17 denotes an auxiliary material tank, and the auxiliary material is supplied from the auxiliary material tank 17 to the spray nozzle 14 for the auxiliary material by pressure feeding means such as a pump (not shown). It goes without saying that appropriate heating or heat retaining means can be provided in the auxiliary material tank 17 and the auxiliary material pipeline, if necessary. Incidentally, the auxiliary material is used to adjust the properties of the binder, for example,
Examples include solidification accelerators and decomposition accelerators for binders.
It is not limited to these things.

In FIG. 1, reference numeral 18 is a nozzle for spraying water or a primer, and as shown in FIG.
Before being sprayed on the road surface. 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 19 and is appropriately selected and used.

In FIG. 1, reference numeral 20 denotes a heating device, which can be easily attached to and detached from the rear portion of the aggregate bin 3 with one touch. The heating device 20 can heat the road surface after the aggregate is sprayed, accelerate the decomposition or solidification of the binder, and build a stronger surface treatment layer in a short time. Reference numeral 23 indicates a work step.

The spray-type surface treatment layer produced by the method of the present invention comprises:
For example, it is constructed as shown in FIG. That is, after cleaning the road surface 101 as needed with a road sweeper (not shown) or the like, first, while advancing the work vehicle 1 of the present invention together with the aggregate supply vehicle 9 and / or the binder supply vehicle 5 in the forward direction, Water or primer 21 is sprayed from the nozzle 18, and then the binder 15 is sprayed from the spray nozzle 2 for the binder. At the same time, the auxiliary material 16 is sprayed from the auxiliary material spray nozzle 14 and mixed with the bonding material 15 in the air,
A layer of a mixture of the binding material 15 and the auxiliary material 16 is formed in a film shape on the road surface 101. Subsequently, the aggregate 22 is sprinkled in one layer from the aggregate bin 3 on the layer of the mixture of the binding material 15 and the auxiliary material 16.

Here, it is important that the spray nozzle 2 for the binder that sprays the binder 15 and the aggregate bin 3 that sprays the aggregate 22 are mounted on 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 work vehicle 1 moves forward at a constant speed, the binder 15
The time from when the aggregates are dispersed until the aggregates 22 are dispersed is constant. Therefore, the properties of the bonding material 15 immediately before the aggregate 22 is sprayed are constant, and uniform and reliable attachment of the bonding material 15 and the aggregate 22 is realized. The time from the application of the bonding material 15 to the application of the aggregate 22 may be any second as long as it is within a fixed time, preferably within a fixed time and as long as it is constant. Considering this, it is usually within 10 seconds, preferably within 6 seconds, more preferably 3 seconds.
Within seconds. It goes without saying that the optimum time is appropriately determined depending on the degree of damage to the road surface, the line shape of the site, and the like.

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 15 to the dispersion of the aggregate 22 constant. Alternatively, the angle of the spray nozzle 2 for the binder with respect to the road surface may be changed according to the speed of the work vehicle 1. Further, in the case where the period from the sprinkling of the binder to the sprinkling of the aggregate is within a certain time, the speed of the work vehicle may slightly change.

In the working vehicle 1 according to the present invention, water or the primer 21 is sprayed, the binder 15 and the auxiliary material 16 are sprayed so that the binder 15 and the aggregate 22 are sprayed on the construction site without excess or deficiency. In addition, the scatter of the aggregate 22 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.

FIG. 4 is a diagram showing another example of the present invention.
This is an example in which a plurality of sets of a binder spreading device and an aggregate spreading device are provided. That is, the spray nozzles 2a and 2b for the binder and the spray nozzles 14a and 14b for the auxiliary material are provided behind the rear wheel 4b of the work vehicle 1 and pair with the spray nozzles 2a and 2b for the binder. Thus, the aggregate bins 3a and 3b are provided. By using such a work vehicle 1, a plurality of spray-type surface treatment layers can be built on the road surface 101 at once. In this case, the binder, the auxiliary material, and the aggregate used for each of the plurality of layers may be the same or different for each layer. In addition, in FIG. 4, two sets of binding material spraying devices and two sets of aggregate material spreading devices are provided, but the number of binding material spreading devices and the number of aggregate material spreading devices are not always the same. There is no need to do this, for example, one binder spreading device may be provided with two or more aggregate spreading devices,
The reverse is also possible. After spraying the binder,
It is also possible to sequentially spray two kinds of aggregates having different particle sizes from the two aggregate dispersion devices. Furthermore, it is needless to say that it is not always necessary to use all of the plurality of bond material distributing devices and aggregate material distributing devices provided, and only the necessary ones may be used.

Here, the spraying method of the spraying type surface treatment method of the present invention and the spraying apparatus of the bonding material and the spraying apparatus of the auxiliary material used in the spraying type surface treatment work vehicle will be further described with reference to FIG.
Of the binder and auxiliary material spraying device used in the spraying type surface treatment method of the present invention, is a diagram showing only the binder spreading device, the same as the previous drawings It is attached with a code. Reference numeral 24 is a spray bar for spraying the binder, 2-1, 2-2, 2-3, ... Are spray nozzles for spraying the binder attached to the spray bar 24. Also, 25-1, 25-2, 25-3, ...
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 a uniform injection pattern, a circular injection pattern, or another injection pattern, from the viewpoint of realizing uniform spraying, 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. 6 is a plan view of FIG. 5 seen from above, and as shown in FIG.
-1, 2-2, 2-3, ... Normally, the flat surface of the spray pattern of the sprayed bonding material 25-1, 25-2, 25-3 ,. It is arranged so as to have a certain angle β with the column direction. The angle β is not particularly limited and may be any number within the range of 0 to 90 degrees, but from the viewpoint of canceling non-uniformity by overlapping the spray patterns from the spray nozzles, it is usually 5 to 45 degrees. , Preferably 10 to 40 degrees, more preferably 15 to 35 degrees. The attachment angles β of the spray nozzles are preferably the same in one spray bar.

As shown in FIGS. 5 and 6, the sprayed bonding materials 25-1, 25-2, 25-3 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 24, ... Partly overlap each other. For example, in the case of FIG. 5 and FIG. 6, each injected bonding material 25-1, 25-
2, 25-3, ... Are 2/3 of each other on the road surface 101.
It overlaps each other. The spraying type surface treatment work vehicle of the present invention equipped with the spraying device for the bonding material including the spray bar 24 and the spray nozzles 2-1, 2-2, 2-3, ... Since it travels in the direction orthogonal to the direction, when viewed from a certain point on the road surface 101, for example, point A, the bonding materials 25-4, 25-3 ejected from the spray nozzles 2-4, 2-3, 2-2 , 25-2 underneath. Therefore, point A is to be sprayed three times, that is, three times. The number of overlapping sprays is not limited to triple, and may be double or quadruple or more, but if the uniformity of the binder to be sprayed is desired,
It is preferable to spray in a triple or quadruple or more, and at least double. 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-mentioned 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. 7 is a side view showing a preferable side-by-side state of the sprinkler for the binder and the sprinkler for the auxiliary material, in which the tip of the spray nozzle 14 for the auxiliary material attached to the spray bar 26 for the auxiliary material is The binder 25 is bent and the injected auxiliary material 27 is injected from the spray nozzle 2.
It is arranged to collide with in the air.

FIG. 8 is a view of the apparatus of FIG. 7 seen from above. As shown in FIG. 8, in the apparatus used in 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, for the bonding material 25-1 sprayed from the bonding material spray nozzle 2-1 from the auxiliary material spray nozzle 14-1. The injected auxiliary material 27-1 collides in the air, and the auxiliary material spray nozzle 14-2 is applied to the auxiliary material 25-2 injected from the auxiliary material spray nozzle 2-2.
The auxiliary material 27-2 jetted from the vehicle collides in the air. 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 14-1, 14- for auxiliary materials
The correspondence between the two, ... Is extremely strict, and the two correspond to each other in a one-to-one correspondence. For example, the auxiliary material 27-2 sprayed from the auxiliary material spray nozzle 14-2 corresponds to the two. Only the binder 25-2 sprayed from the spray nozzle 2-2 for the binder to collide with in the air 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 14-1, 14- for auxiliary materials
Such a one-to-one correspondence relationship between 2, ... Is realized as follows. For example, in FIG. 8, the auxiliary material 27 sprayed from the auxiliary material spray nozzle 14-1.
-1 is taken as an example, between the sprayed auxiliary material 27-1 and the corresponding bonding material 25-1, the bonding material 25-2 sprayed from the spray nozzle 2-2 for the uncorresponding bonding material. However, since the injected bonding material 25-2 has a fan shape with a widened hem as shown in FIG. 5, for example, the injected auxiliary material 27-1 is the bonding material 25- in front. 2. Passing above the shoulder part of the sloping hem of 2 and connecting material 25-
It is enough to collide with 1. That is, in FIG.
Seen from the horizontal direction orthogonal to the longitudinal direction of the spray bar 24, a line segment drawn horizontally from the intersection w of the right shoulder of the injected bonding material 25-1 and the left shoulder of the injected bonding material 25-2 is drawn. Although shown as the line segment W, the auxiliary material 27-1 injected from the auxiliary material spray nozzle 14-1 in FIG. 8 is located above the bonding material 25-2 at a position higher than the line segment W in FIG. If it passes through, the spray nozzles for the binder and the spray nozzles for the auxiliary can be made to correspond one to one. The spray nozzle 2 for the binder so that the injected binder and the auxiliary material have such a positional relationship.
By disposing the spray nozzles 1-1, 2-2, 2-3, ... And the auxiliary material spray nozzles 14-1, 14-2, 14-3 ,. −
The auxiliary material 27-3 sprayed from 3 collides only with the bonding material 25-3 sprayed from the spray nozzle 2-3 for the bonding material, and the spray nozzles 2-2 or 2 for another adjacent bonding material 2-3. -4 will not collide with the bonding material 25-2 or 25-4 injected.

The spray nozzle 14-1 for the auxiliary material
Since the injection direction of the auxiliary material 27-1 from is usually obliquely downward, the auxiliary material 27-1 has the binding material 25-2 in front.
Even if the position passing above is set to a position slightly higher than the line segment W, the collision position between the binding material 25-1 and the auxiliary material 27-1 on the binding material 25-1 is shown in FIG. As indicated by Y, it can be lowered to a position slightly lower than the line segment W. 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 binding material 25-1 and the auxiliary material 27-1 be slightly above the line segment W.

If the collision position Y between the binding material and the auxiliary material is too low, the time from the collision between the binding material and the auxiliary material until the binding material falls on the road surface and loses 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 14-1, 14-2, 14-3 for the auxiliary material are provided. 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.
, 27-2, 27-3, ... To the corresponding bonding materials 25-1, 25-2, 25-3, ..., Respective collision positions Y1, Y2, Y3 ,. ..Injection is performed so that the upper injection density is uniform. That is, auxiliary material 2
In the plan view of FIG. 8, the fan-shaped injection patterns 7-1, 27-2, 27-3, ...
Vertical planes Z1, Z2, Z3, ... With respect to the flat surface of the fan-shaped injection pattern of 1, 25-2, 25-3 ,.
With respect to the binding material 25-
It is injected toward 1, 25-2, 25-3, .... As a result, the collision positions Y1, Y2, Y3, ...
..Auxiliary materials 27-1, 27-2, 27-3, ...
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 bonding material which 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 binder and the auxiliary material are made to correspond to each other with the spray nozzles in a one-to-one correspondence and the binder and the auxiliary material are made to collide 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 method and the spray-type surface treatment work vehicle of the present invention are mainly constructed or used for repairing an existing pavement, but the present invention is not limited to the repair, and a color aggregate is used. Use to build a colored surface layer on existing or new pavement, or use light-reflective aggregate to build a light-reflective surface layer on existing or new pavement. You can also do it. According to the spraying type surface treatment method and the spraying type surface treatment work vehicle of the present invention, the surface layer made of the binder and the aggregate can be constructed inexpensively continuously and efficiently by a simple operation.

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

Example 1 The spraying type surface treatment method of the present invention was carried out using three vehicles, a work vehicle, an aggregate feeding vehicle and a binder feeding vehicle shown in FIG. Prior to construction, the road surface was cleaned with a road sweeper, and then the aggregate supply vehicle, the work vehicle of the present invention, and the binder supply vehicle were moved forward at a constant speed of 30 m / min. Since the distance between the spray nozzle for the binder and the aggregate bin was 1 m, the time from spraying the binder to spraying 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 / m2) <Aggregate> Aggregate: No. 6 crushed stone (Katsura production in Tochigi prefecture) ) Spraying temperature: 150 ° C Spraying amount: 0.01 (m3 / m2) <Auxiliary material> None <Primer> None

Table 1 shows the properties of the binder used.

[0056]

[Table 1]

(Embodiment 2) The same work vehicle, aggregate feeding vehicle, and binder feeding vehicle are used, but the forward speed is varied while the distance between the binder feeding spray nozzle and the aggregate bin is kept constant. The time from the dispersion of the binder to the dispersion of the aggregate to the dispersion of the aggregate is about 10 seconds or less, which is within a certain time, but is changed randomly within this 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. 9, 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 binder remained liquid as far as it was visually inspected and the touch feeling with a driver or a spatula was examined.

After curing for one day and night, a heavy load was loaded on a large vehicle for testing, and the surface treated layer constructed by the above-mentioned Example 1, Example 2 and Comparative Example 1 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 1, whereas in the section of Example 2, 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 1, scattered traces 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 1 and 2, it was difficult to remove the aggregate at all locations, 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 a portion where the force was not uniform was generated, and therefore when the vehicle passed, the vehicle load was concentrated on the portion 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. Spraying temperature: 15 ° C Spraying amount : 1.32 (l / m 2) and the dispersion temperature of the aggregate was 15 ° C., in the same manner as in Example 1, Example 2 and Comparative Example 1, respectively, Example 3, Example 4 and Comparative The surface treatment layer of Example 2 was constructed.
The road surface temperature during construction was 51 ° C and the air temperature was 28 ° C. Table 2 shows the properties of the SP binder, which is the binder used.

[0063]

[Table 2]

After curing for one day and night, a heavy load was loaded on a large vehicle for testing, and the surface treated 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 amount of 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.

An attempt was made to remove the aggregate with the tip of a screwdriver or a spatula, but in the sections of Example 3 and Example 4, it was felt that it was somewhat difficult to remove the aggregate at all locations. In the section of Comparative Example 2, there were places where the aggregate could be peeled off relatively easily. This is consistent with the result that many scattering traces of aggregate due to vehicle passage were found in the section of Comparative Example 2, and there is a place where the bonding force between the road surface and the aggregate is insufficient. . On the other hand, in the section of Example 4, as in the section of Example 3, although it was slightly difficult to peel off the aggregate, there was a slight scattering trace of the aggregate due to the passage of the test vehicle. What was seen was that although the bond strength between the aggregate and the road surface itself was not insufficient, the bond strength between the aggregate and the road surface was not uniform because the time from the dispersion of the bond material to the dispersion of the aggregate varied. It is presumed that when the vehicle passed, the load of the vehicle was concentrated on the portion where the binding force was weak and the aggregate was scattered.

[0067]

As described above, according to the spraying type surface treatment method and the spraying type surface treatment work vehicle of the present invention, a uniform and durable surface treatment layer can be formed while the vehicle is all advanced in the forward direction. It is possible to construct easily and efficiently. In addition, since the binder spreading device and aggregate spreading device are installed on a single vehicle, it is possible to manage the binding process by linking the binder spreading and the aggregate spreading as a consistent process. Therefore, not only can the time interval from the spread of the binder to the spread of the aggregate be kept within a certain time or even constant, but it is possible to control the spread width and the start and end timings of the spread in a unified manner. Becomes

Further, according to the present invention, since it is possible to perform the construction continuously while receiving the supply of the aggregate and the binder, it is possible to construct a uniform surface treatment layer without interruption even in a long construction section. be able to. INDUSTRIAL APPLICABILITY The present invention is not limited to the construction of a surface treatment layer for repair, and can be utilized when constructing a surface layer composed of a binder and an aggregate on all pavements, whether existing or new, so it is extremely convenient. Which is an extremely useful invention.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a construction method of the present invention.

FIG. 2 is a diagram showing a transportation route of an aggregate.

FIG. 3 is a diagram showing an example of constructing a surface layer by the method of the present invention.

FIG. 4 is a diagram showing another example of construction of a surface layer by the method of the present invention.

FIG. 5 is a side view showing an example of a binder spreading device.

FIG. 6 is a plan view showing an example of a binder spreading device.

FIG. 7 is a side view showing an example of the positional relationship between the sprinkling device for the bonding material and the sprinkling device for the auxiliary material.

FIG. 8 is a plan view showing an example of the positional relationship between the binder spraying device and the auxiliary material spraying device.

FIG. 9 is a diagram showing a conventional construction method.

[Explanation of symbols]

1 work vehicle 2 spray nozzles 3 Aggregate bottle 4a, 4b Work vehicle tires 5 binder supply vehicle 6 connecting pipes 7 Socket for carrying in binder 8 Binder transport pump 9 Aggregate supply vehicle 10 Aggregate hopper 11 Aggregate conveyor 12 screw conveyor 13 Push roller 14 spray nozzles 15 Binder 16 Auxiliary material 17 Auxiliary material tank 18 spray nozzles 19 Water / Primer tank 20 heating device 21 Water / Primer 22 Aggregate 23 Working steps 24 Spray bar for binder 25 binder 26 Spray bar for auxiliary materials 27 Auxiliary material 101 road surface 102 Road Sweeper 103 asphalt distributor 104 dump truck 105 roller α Spray nozzle spray angle β spray nozzle mounting angle

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenichiro Kobayashi 2-7-11 Midori, Minamikawachi-cho, Kawachi-gun, Tochigi Green Hills 205 (56) Reference JP-A-8-218312 (JP, A) JP-A-10 -46521 (JP, A) JP-A-9-158112 (JP, A) JP-A-9-21102 (JP, A) JP-A-10-46517 (JP, A) JP-A-58-17906 (JP, A) ) U.S.A. 63-27514 (JP, U) U.S. Pat. No. 6-76408 (JP, U) U.S. Pat. No. 5-47761 (JP, Y2) U.S. Pat. 3016809 (US, A) U.S. Pat. 4302128 (US, A) French patent application publication 2695949 (FR, A 1) Registered utility model 3002736 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E01C 19/21 E01C 19/48 E01C 19/16

Claims (16)

(57) [Claims] 1. A work vehicle comprising a binder spreader and an aggregate spreader in this order from the front of the vehicle in the order behind the rear wheels of the vehicle , wherein the work vehicle further comprises one or two or more. Sp
Equipped with an auxiliary material spraying device with a Reynolds
Also, the spraying device for the binder may have one or more spray nozzles.
Using a work vehicle having a le, while advancing the work vehicle, 1
A spray with 1 auxiliary material sprayed from the spray nozzle
In the air with the binder injected from the nozzle,
The height from the spray nozzle for the binder to H is
It will collide at a position in the range of (1/4) H to (3/4) H.
Auxiliary that is sprayed from each spray nozzle
The injection density of the material at the collision position with the binding material is
To be almost uniform over the entire spread
In addition, the fan-shaped spray pattern of the auxiliary material
Left-right pair with respect to the vertical plane to the flat plane of the projection pattern
After the auxiliary material is sprayed on the road surface at a nominal angle, the binder is sprayed on the road surface, and then the aggregate of a single grain size is applied to the binder with a substantially uniform thickness at an almost constant time interval. A spray-type surface treatment method for spraying on. 2. The spray type surface according to claim 1, wherein the aggregate spraying device has an aggregate bin, and the aggregate is sprayed after being homogenized in the width direction of the work vehicle in the aggregate bin. Processing method. 3. A spray-type surface treatment method according to claim 1 or 2 wherein the decomposition promoting material of the auxiliary material binder. 4. The spray type surface according to claim 1, 2 or 3 , wherein the work vehicle further comprises a water and / or primer spraying device, and sprays the water or the primer on the road surface and then sprays the binder. Processing method. 5. A spray-type surface treatment method according to claim 1, 2, 3 or 4 is changed in conjunction with swath of the binder and the swath of the aggregate. 6. A work vehicle further comprises a heating means of the road surface, scatter type surface treatment method according to claim 1, 2, 3, 4 or 5 for heating the road surface. 7. An aggregate supply vehicle is located in front of the work vehicle,
While the supply of the aggregate into the work vehicle from the aggregate supply vehicle from time to time, continuously perform the work claim 1, 2, 3, 4 or
6. The spray-type surface treatment method described in 6 . 8. The work is continuously performed while the binder supply vehicle is positioned behind the work vehicle and the binder is supplied from the binder supply vehicle to the work vehicle at any time. 4,
The spraying type surface treatment method described in 5, 6, or 7 . 9. A work vehicle comprising two or more binder spreading devices and two or more aggregate spreading devices, and repeating the binder spreading and the aggregate spreading twice or more, respectively.
The spray-type surface treatment method described in 2, 3, 4, 5, 6, 7 or 8 . 10. A bonding material spreading device and an aggregate spreading device,
An aggregate bin provided in this order from the side closer to the front of the vehicle behind the rear wheel of the vehicle, and wherein the aggregate dispersal device is an aggregate bin having an aggregate discharge port whose discharge amount and / or discharge width can be adjusted. , therein, have a aggregate bin having means for equalizing the working vehicle width direction to accept aggregate further, near the binder spraying device
Auxiliary material spraying device is provided nearby, and the binder spraying device is 1 or
It has two or more spray nozzles and one auxiliary material spraying device.
Or, having two or more spray nozzles, one spray nozzle
Auxiliary material is injected from the spray nozzle of 1
The binder used in the air, and from the road surface
Assuming that the height to the play nozzle is H, (1/4) H ~
The binding material is set so that the collision occurs in the position of (3/4) H.
Spray one or more spray nozzles and auxiliary materials to be sprayed
One or more spray nozzles
And auxiliary materials that are sprayed from individual spray nozzles
The injection density at the collision position with the binder of
So that it is almost uniform over the entire spread width,
The fan-shaped spray pattern of the auxiliary material is the fan-shaped spray pattern of the binder.
It is symmetrical about the vertical plane to the flat plane of the turn.
One or more sprays that inject the binder at an angle such that
One or more sprays to spray the play nozzle and auxiliary material
-Spraying type surface treatment work vehicle with nozzles . 11. The vehicle front than the binding material spraying apparatus, according to claim 1 comprising comprising a spray device for water and / or primer
The spray type surface treatment work vehicle described in 0 . 12. The spray type surface treatment work vehicle according to claim 10 or 11 , further comprising a road surface heating means provided behind the aggregate spraying device. 13. The spray type surface treatment work vehicle according to claim 10, 11 or 12 , further comprising an aggregate hopper provided in front of the vehicle and an aggregate transport device from the aggregate hopper to the aggregate spread device. . 14. The spray type surface treatment work vehicle according to claim 10, 11, 12 or 13 comprising a binder tank and / or a water tank and / or a primer tank and / or an auxiliary material tank. 15. The spread width of the binder and the spread width of the aggregate can be changed in conjunction with each other .
The spray type surface treatment work vehicle according to 13 or 14 . 16. A bonding material spreading device and an aggregate spreading device,
The spraying type surface treatment work vehicle according to claim 10, 11, 12, 13, 14 or 15 , wherein two or more vehicles are provided behind the vehicle rear wheels.