JP2000273816A - Liquid spraying device for road surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly spray a liquid by reciprocating a spray nozzle train arranged with a plurality of spray nozzles linearly so that the spray nozzles draw straight lines. SOLUTION: A spray bar is reciprocated in the horizontal plane so that spray nozzles 3-1, 3-2... draw linear loci, and this liquid spraying device 1 for the road surface is fitted to a work vehicle 2. The nozzles 3-1, 3-2... are fitted to the spray bar so that the flat face of a flat spray pattern has an angle in the range of 0-90 deg. in the direction of a nozzle train, or the nozzle train is linearly reciprocated so that the moving loci of the nozzles 3-1, 3-2... draw straight lines inclined by a half of the nozzle spray angle to the vertical direction in the vertical plane including the flat face of the flat spray pattern. When a plurality of spray nozzle trains are provided, they are moved at a uniform phase difference from each other for uniform spraying, or they are moved in the same phase together, thereby sprays a liquid material highly uniformly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road surface liquid spraying device, and more particularly to a road surface liquid spraying device capable of uniformly spreading a pavement liquid material such as a binder.

[0002]

2. Description of the Related Art When performing road pavement, a bituminous material such as asphalt or asphalt emulsion may be sprayed on a road surface as a primer or a binder.
In spraying these liquid materials on the road surface, for example, a work vehicle such as an asphalt distributor is used to spray the liquid material on the road surface. The work vehicle is usually provided with a plurality of spray nozzles arranged linearly in a direction orthogonal to the traveling direction of the work vehicle, and liquid materials are ejected from the spray nozzles,
Spread on the road.

[0003] It is desirable that the spraying of the liquid material is performed uniformly. Therefore, conventionally, the spraying characteristics of a plurality of spray nozzles to be used are made as uniform as possible, or the spraying areas from the adjacent spray nozzles are mutually separated. Attempts have been made to cancel out variations in the characteristics of individual spray nozzles, for example by partially overlapping. However, considering that it is necessary to use a commercially available spray nozzle or replace some of the spray nozzles due to a failure or the like, there is a limit to making the spray characteristics of multiple spray nozzles used the same. is there. Also, even if the spraying areas from adjacent spray nozzles partially overlap, the height of the spray nozzles from the road surface, that is, the spraying height, may cause the liquid material to be sprayed to be sprayed in a mist state. For this reason, there is a restriction that it cannot be raised indiscriminately, and there is a certain restriction on the arrangement interval of the spray nozzles due to the size of the spray nozzle itself. It was at best. If the spray area from adjacent spray nozzles overlaps only twice or at most three times, it is difficult to achieve uniform spraying, depending on the type of liquid material used and the spraying environment. Was often observed in the sprayed area as a plurality of streaks along the traveling direction of the work vehicle.

[0004] Such uneven distribution is caused when a relatively large amount of bituminous material is applied as a primer or a binder per unit area, or when an asphalt mixture or the like is spread thickly on the application surface. Although it is not a problem, for example, as in the case of the spraying type surface treatment method, a relatively small amount of binder is sprayed per unit area on the road surface, and the aggregate is sprayed from above to form a surface treatment layer. In some cases, it can lead to unexpected obstacles. That is, in the spraying type surface treatment method, the aggregate is bonded to the road surface by the bonding material scattered on the road surface, so that the scattering of the bonding material is uneven, for example, the amount of the bonding material sprayed is too small. If there is a place, the bonding strength between the aggregate and the road surface will be weak at that point, and the aggregate will be scattered by traffic of vehicles,
There is a possibility that the constructed surface treatment layer is destroyed.
Conversely, if there are places where the amount of the binder spread is too large,
At that point, the binder rises to the upper surface of the sprinkled aggregate layer, which not only impairs the aesthetic appearance but also causes the road surface to flash, becomes extremely slippery, and causes slip.

[0005] As described above, in a construction method that requires detailed process control at the time of construction, such as a spray-type surface treatment method, the level of uniformity of the dispersion of liquid material is unprecedented. It is required,
Conventionally, there has been no road surface liquid spraying device satisfying such a demand.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks of the prior art, and is intended to uniformly remove bituminous materials such as asphalt and asphalt emulsion and other liquid materials for paving. It is an object of the present invention to provide a road surface liquid spraying device capable of spraying the liquid uniformly.

[0007]

According to an investigation conducted by the present inventors, there is a limit in making the characteristics of the spray nozzles used uniform, and it is difficult to procure a plurality of spray nozzles having exactly the same characteristics. In addition, the ejection density of the liquid material ejected from a single spray nozzle is not completely uniform and has unevenness in place, and even with respect to a single spray nozzle, it is uniform over the entire spray area. It was found that no sprinkling was performed. For example, as shown in FIG. 1, the amount of spray from a single spray nozzle also varies in location. In FIG. 1, reference numeral 3 denotes a spray nozzle, 4 denotes a spray bar, 5 denotes a spray pattern, N denotes a spray position, and P denotes a spray amount. Therefore, the non-uniformity of spraying between a plurality of spray nozzles and a single spray nozzle is eliminated, and the uniformity of spraying at an unprecedented level required in, for example, a spray type surface treatment method is realized. As a result of repeated studies, it was found that spraying nozzles can reciprocate the entire spray nozzles so that the trajectory of each spray nozzle draws a straight line. We have completed the present invention.

That is, according to the present invention, at least one spray nozzle row composed of a plurality of spray nozzles arranged in a straight line, and the spray nozzle row is reciprocated so that the movement locus of each spray nozzle draws a straight line. An object of the present invention is to solve the above-mentioned problem by providing a road surface liquid spraying device having a mechanism for moving.

According to the present invention, one or a plurality of rows of spray nozzles composed of a plurality of spray nozzles are reciprocated so that the movement locus of each spray nozzle draws a straight line. The ejection pattern of the liquid material to be ejected spreads along the movement trajectory, and a multiple overlapping ejection pattern as if the liquid material was ejected using a large number of spray nozzles is realized. As a result, even when there is a limit to the installation interval of the spray nozzles, and even when there is a restriction on the height of the spray nozzles from the road surface, the spraying area of the adjacent spray nozzles is double, triple, quadruple, Or it is easily possible to overlap more. At this time,
It is needless to say that the number of spray areas can be changed by adjusting the movement amplitude of the spray nozzle row or changing the number of spray nozzle rows used. As described above, in the road surface liquid spraying apparatus of the present invention, since the spray areas from the respective spray nozzles overlap in a multiplex manner, even when the spray characteristics vary among the plurality of spray nozzles, Even when there is a positional non-uniformity in the injection amount of the nozzle, the dispersion and the non-uniformity can be easily canceled, and a uniform level of distribution can be achieved. Furthermore, in the road surface liquid spraying device of the present invention, as a result of moving the spray nozzles, except when the moving surface of the spray nozzle row is a horizontal plane,
Not only the horizontal position of each spray nozzle, but also the distance between each spray nozzle and the road surface changes periodically. Therefore, the size of the spray area on the road surface of the liquid material sprayed from each spray nozzle also changes, which is effective for canceling the unevenness of the spray amount, and the spray height of the spray nozzle changes due to the movement of the spray nozzle row. In that case, more uniformity is achieved. In addition, the straight line referred to in the present invention is a line viewed from a coordinate system on the road surface liquid spraying device.

There is no particular limitation on the type of spray nozzle used in the road surface liquid spraying apparatus of the present invention. A spray nozzle having a circular full-surface spray pattern, a square full-surface spray pattern, an annular spray pattern, Although it may have another spray pattern, it is most desirable to use a spray nozzle having a flat spray pattern from the viewpoint of realizing uniform multiple spraying. The flat-shaped 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 the flat surface referred to in the present invention is a fan-shaped spray pattern. It shall refer to the face of the fan in the spray pattern.

The flat spray nozzle is usually arranged such that the flat surface of the spray pattern 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.
Degrees, preferably 10 to 40 degrees, more preferably 15 to 40 degrees.
The range is 35 degrees. The installation angle β of the spray nozzle is
Although it may be different for each individual spray nozzle, it is preferable that it be the same within at least one spray nozzle row.

When the flat spray nozzle having the spray angle α is arranged such that the flat surface of the spray pattern has an angle β with the row direction of the spray nozzle row, the straight line drawn by the movement trajectory of the spray nozzle becomes a horizontal plane. And a straight line inclined by an angle β with respect to the row direction of the spray nozzle row, or in a vertical plane including a flat surface of a flat spray pattern, and the spray nozzle Preferably, the straight line is inclined by half the injection angle α. By appropriately combining these two types of straight lines, the movement trajectory of the spray nozzle is, at one time, a horizontal line and is a straight line inclined by an angle β with respect to the row direction of the spray nozzle row, and at other times,
It is also possible to use a straight line that is in a vertical plane including the flat surface of the flat spray pattern and that is inclined from the vertical direction by half the spray angle α of the spray nozzle. By limiting the straight line drawn by the movement trajectory of the spray nozzle to this, even if the spray nozzle row is moved, the spray pattern continues while maintaining a flat shape, and more uniform spraying becomes possible. In particular, the straight line drawn by the movement trajectory of the spray nozzle is a straight line that is in the vertical plane including the flat surface of the flat spray pattern, and is inclined by half the spray angle α of the spray nozzle from the vertical direction. In this case, the spray boundary at one end of the spray nozzle row can be maintained at a fixed position regardless of the movement of the spray nozzle row, and the advantage that the end processing at the time of spraying the liquid material is facilitated. is there.

The mechanism for moving the spray nozzle row is not particularly limited, and any mechanism may be used as long as it can reciprocate so that the spray locus moves in a straight line. Spray nozzle rows are usually
Since it is configured as a plurality of spray nozzles attached to the spray bar, the spray bar can be moved to move the spray nozzle row. When a spray bar is not used, a plurality of spray nozzles may be individually moved, or a plurality of spray nozzles may be moved as a group via mechanical coupling means.

The speed and / or amplitude of the movement of the spray nozzle row is variable and can be adjusted or changed as appropriate according to the type of liquid material to be sprayed or the condition of the road surface. The speed and / or amplitude of the movement of the spray nozzle row may be kept constant during the spraying operation or may be varied, such as stopping at a specific position, reversing the direction of movement, and stopping and moving. You may make it perform it alternately. Injection of liquid material
The reciprocating motion of the spray nozzle row may be performed both on the outward path and the return path, or the liquid material may be injected only on the outward path or only on the return path.

The liquid spraying apparatus for a road surface according to the present invention can be provided with two or more spray nozzle arrays.
When a plurality of spray nozzle rows are provided, it is desirable that they are parallel to each other. The plurality of spray nozzle rows can be moved with or without phase synchronization with each other, but it is desirable to move with the phase synchronization. When a plurality of spray nozzle rows are moved with their phases synchronized with each other, the phases should be the same or the phase difference should be equal. To equalize the phase difference, n should be set to n. When there are n spray nozzle rows as natural numbers of 2 or more, it is preferable to set the phase interval to 360 / n degrees. When a plurality of spray nozzle rows are moved in the same phase, the plurality of spray nozzle rows can be moved by a single drive mechanism.

Since the road surface liquid spraying apparatus of the present invention usually moves on the road surface by being mounted on a work vehicle, etc., by providing a plurality of spray nozzle arrays, only one spray nozzle array is provided. As compared with the case of (1), the overlapping number of the spraying area which is as many as the number of spray nozzle rows is obtained. In addition, even when using a plurality of spray nozzle rows, the speed and / or amplitude of the movement of each spray nozzle row is variable, and may be appropriately adjusted according to the type of liquid material to be sprayed or the condition of the road surface. Be changed. The speed and / or amplitude of the movement of each spray nozzle row may be kept constant during the spraying operation or may be varied, and a plurality of spray nozzle rows may be stopped at a specific position, or may be stopped and moved. May be alternately performed.

The road surface liquid spraying apparatus of the present invention is preferably mounted on a work vehicle. The work vehicle is not limited to a work vehicle for road pavement work, but also includes a liquid spray vehicle that sprays a liquid for preventing freezing on a road surface and a liquid for dustproof treatment on an unpaved road. If necessary, it can also be used for fertilizers for agriculture and for spraying asphalt emulsion on fields. However, since the spraying apparatus for road surface liquid of the present invention can realize spraying with extremely excellent uniformity, spraying work requiring a new level of uniformity, such as a spraying type surface treatment method, is required. It is preferably used. Examples of working vehicles suitable for the spraying type surface treatment method include, for example, Japanese Patent Application Nos. 10-158664, 10-158665, and 10-108, filed by the same applicant.
A work vehicle equipped with at least an aggregate dispersing device and a binder dispersing device as disclosed in Japanese Patent Application No. 172107, Japanese Patent Application No. 10-172119, and Japanese Patent Application No. 10-177886. The road surface liquid spraying device of the present invention is mounted on such a work vehicle as a binder spraying device, and is configured as a work vehicle for a spraying type surface treatment method.

There is no particular limitation on the liquid material sprayed by the road surface liquid spraying apparatus of the present invention. Bituminous materials such as asphalt and asphalt emulsion, water, resin, other emulsions, chemicals, liquid fertilizers, antifreeze, drying Any liquid material that can be normally sprayed on the road surface, such as a preventive liquid, can be applied to any of them. However, it is most effective when applied to bituminous materials, for which uniform spraying has conventionally been particularly difficult in terms of viscosity and the like. Further, the road surface in the present invention is not necessarily limited to a paved road surface, an unpaved road surface, and can be used for watering or spraying liquid materials such as a plaza, a parking lot, a cargo hold, a playground, a field, a coast, a wilderness, a green space, and the like. It includes all of the places where it takes place.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.

FIG. 2 is a side view showing an example of the road surface liquid spraying apparatus of the present invention. In FIG. 2, 1 is a road surface liquid spraying device of the present invention, 2 is a work vehicle, and FIG.
Shows only a part of it. 3-1, 3-2,
The spray nozzles 3-3, 3-4,... Are attached to the spray bar 4 and constitute a spray nozzle row. 5-1, 5-2, 5-3, 5-4 ...
Are the spray nozzles 3-1, 3-2, 3-3, 3-
.., And in the example of FIG. 2, a case of a flat-type spray pattern is shown, but the spray nozzles 3-1, 3-2, 3-3, and 3-
The injection pattern of 4,... Is not limited to the flat type.

Each of the spray patterns 5-1, 5-2, 5-
., 5-4... Overlap with the adjacent ejection patterns in half of the area, respectively, so that the spraying is performed twice in a stationary state. Reference numeral 6 denotes a drive mechanism for moving the spray bar 4. In the example of FIG. 2, the spray bar 4 can be reciprocated so that the movement locus of the spray nozzle draws a straight line in a horizontal plane. In addition, α is an ejection angle of the liquid material ejected from the spray nozzle, and 7 is a road surface.

FIG. 3 is a plan view of the road surface liquid spraying device shown in FIG. 2, and the same components as those in FIG. 2 are denoted by the same reference numerals. 8, 8 are guide rails constituting the drive mechanisms 6, 6, and guide rings 9, 9 connected to the spray bar 4 are engaged with the guide rails 8, 8. Reference numerals 10 and 10 denote driving devices that constitute the driving mechanisms 6 and 6.
By driving 0 and 10, the spray bar 4 can be reciprocated in a horizontal plane. In the example of FIG. 3, the spray bar 4 reciprocates between a position A indicated by a solid line and a position B indicated by a broken line in the order of 4A → 4B → 4A.
2, 3-3,... Move in a straight line locus indicated by a bidirectional arrow. The drive mechanisms 6, 6 can rotate around the axes 11, 11 as shown by the double-headed arrows, and by rotating the drive mechanisms 6, 6, the direction of movement of the spray bar 4 can be changed. In the illustrated example, the driving mechanisms 6 and 6 using the driving devices 10 and 10 are employed. However, the mechanism for moving the spray bar 4 is not limited to this. Any drive mechanism may be employed as long as the path can reciprocate so as to draw a straight line.

FIG. 4 is a diagram showing the relationship between the movement of the spray bar 4 and the spray pattern. As shown in FIG.
Spray nozzles 3-1A, 3-2A, 3
-3A,... Are flat injection patterns 5-1.
Are attached to the spray bar 4 so that the flat surfaces of A, 5-2A, 5-3A,... Angle β can be any value within the range of 0 to 90 degrees, and is appropriately determined according to the spray angle of the spray nozzle to be used, the distance from the spray nozzle to the road surface, the required number of sprays, and the like. Although it can be determined, it is usually 5 to 45 degrees, preferably 10 to 45 degrees.
A range of 40 degrees, more preferably 15 to 35 degrees, is good for obtaining an appropriate number of overlapping scatters. Further, as shown in FIG. 4, it is desirable that the angle β is the same regardless of the spray nozzle within one spray nozzle row, but may be different for each spray nozzle in some cases. In addition,
The distance w between each spray nozzle in the spray nozzle row is
As shown in FIG. 4, it is desirable that the value is constant, but it may be different between adjacent spray nozzles.

The spray bar 4 is provided with each of the spray nozzles 3-1A, 3-2A, from position A to position B shown in FIG.
3-3A,... Are moved so as to draw a straight line. At this time, the movement direction of the spray bar 4 is determined by the spray nozzles 3-1A, 3-2A, 3-3A,.
May be in any direction as long as the movement trajectory draws a straight line. If possible, as shown in FIG. 4, each of the spray nozzles 3-1A, 3-2A, 3-3A,. It is preferable to move the spray bar 4 so that the movement trajectory is in a horizontal plane and draws a straight line inclined by an angle β from the row direction of the spray nozzle row. By selecting the movement direction of the spray bar 4 in such a direction, even if the spray bar 4 moves from the position A to the position B, 4A → 4B, the spray pattern 5-1A, 5-2A, 5-3A. ,
.. Are injection patterns 5-1B, 5-2B, 5-3
B,... Are respectively continuous, and more uniform spraying is possible.

L is the amplitude of the reciprocating motion of the spray nozzle row, that is, the spray bar 4. There is no particular limitation on the size of L, but if it is too small, there is no point in moving the spray nozzle row, and if it is too large, it will also cause mechanical unreasonableness. Preferably 2 to 70 cm, more preferably 3 to 5 cm
A range of 0 cm is good. Also, there is no particular limitation on the size of w, but if it is too small, the size of the spray nozzle itself and the size of accessories for mounting the spray nozzle will interfere with the mounting, making it difficult to install. If it is too large, on the contrary, if it is too large, the number of spray nozzles will be reduced and uniform spraying will be difficult to achieve, so that it is usually in the range of 3 to 30 cm, preferably 5 to 25 c.
m, more preferably in the range of 7 to 20 cm. L and w
The relationship can be appropriately determined according to the spray angle α and the mounting angle β of the spray nozzle to be used, the distance from the spray nozzle to the road surface, the number of spray nozzle rows, the required number of sprays, and the like. , L × cos β = w / 3
３3w, preferably L × cos β = w / 2 to 2w
Range.

In the example of FIG. 4, L × cos β = 1.5
w, and as a result of the spray bar 4 moving to the position B, the spray nozzle rows 3-1A, 3-2A, 3-3A,
.. Indicates that the spray nozzle row direction position is 1.5
The position of the spray nozzles at the position A and the position of the spray nozzles at the position B do not overlap at the position of the position A and the position of the spray nozzle at the position A, shifted by w. ing. By doing so, the non-uniformity of the spraying characteristics of the individual spray nozzles and the variation of the spraying characteristics between the spray nozzles are effectively canceled, and more uniform spraying becomes possible. The work vehicle 2 equipped with the road surface liquid spraying device 1 of the present invention normally moves at a constant speed in the direction shown by the arrow C, while the movement speed of the spray bar 4 is L × sinβ, that is, at least one cycle of movement is performed until the spray bar 4 moves a distance corresponding to the projection length of the amplitude of the reciprocating movement of the spray bar 4 in the traveling direction of the work vehicle 2. Therefore, in the example of FIG. 4, by moving the spray nozzle row,
At least twice as much as without moving the spray nozzle row,
That is, it is possible to perform at least four overlapping sprays. Needless to say, if the movement speed of the spray nozzle row is increased, multiple spraying can be performed. Thereby, even if there is a variation in the spraying characteristics for each spray nozzle, and even if a single spray nozzle has unevenness in spraying, those unevenness and unevenness in spraying are canceled out each other,
Uniform spraying can be performed.

FIG. 5 is a view showing another example of the road surface liquid spraying apparatus according to the present invention, in which the spray nozzle row is reciprocated so that the moving locus of the spray nozzle draws a straight line in a vertical plane. It shows. The spray bar 4 is moved by a drive mechanism (not shown) such that the moving trajectory of each spray nozzle draws a straight line from 4A to 4B to 4A. At this time, the movement direction of the spray bar 4 may be any direction as long as the movement trajectory of each of the spray nozzles 3-1A, 3-2A, 3-3A,. If possible, as shown in FIG. 5, the movement trajectory of each spray nozzle 3-1A, 3-2A, 3-3A,... Is in a vertical plane including a flat surface of a flat injection pattern, and It is preferable to move the spray bar 4 so as to draw a straight line that is inclined by half the spray angle α of the spray nozzle from the vertical direction. By selecting the movement direction of the spray bar 4 in such a direction, even if the spray bar 4 moves from the position A to the position B, 4A → 4B, the spray patterns 5-1A, 5-2A, and 5-3.
A,... Are injection patterns 5-1B, 5-2B, 5-
3B,..., Respectively, and more uniform spraying becomes possible. In particular, paying attention to the spray nozzle 3-1 at one end of the spray nozzle row, the ejection boundary of the liquid material ejected from the end spray nozzle 3-1 on the road surface 7 is represented by the ejection pattern 5-. 1A and 5-1B, despite the movement of the spray bar 4 from the position A to the position B,
As a result of the continuation, there is an advantage that the end portion is always maintained at a fixed position, and the end portion treatment at the time of spraying the liquid material becomes easy. Furthermore, in the example of FIG. 5, the spray bar 4 is moved so that the movement trajectory of the spray nozzle draws a straight line in the vertical plane, so that not only the horizontal position of each spray nozzle but also each spray nozzle The distance to the road surface also changes periodically. Accordingly, the size of the spray area on the road surface of the liquid material ejected from each spray nozzle also changes almost twice, for example, from 5-1A to 5-1B, which is effective in canceling the unevenness of the ejection amount.

The spray nozzle array, ie, the spray bar 4
The magnitude of the amplitude L of the reciprocating motion is the same as that described in relation to the example of FIG. 4, and the same applies to the distance w between the spray nozzles. Speaking of the relationship between L and w, this depends on the spray angle α and mounting angle β of the spray nozzle used, the distance from the spray nozzle to the road surface, the number of spray nozzle rows, the required number of sprays, etc. It can be determined appropriately, but usually L × sin (α / 2)
× cosβ = w / 3 to 3w, preferably L × si
n (α / 2) × cosβ = w / 2 to 2w.
In the example of FIG. 5, L × sin (α / 2) × cos β =
w, and as a result of the spray bar 4 moving to the position B, the spray nozzle rows 3-1A, 3-2A, 3-3A,
.. Means that the position of the spray nozzle row in the spray nozzle row direction is shifted by w, and the spray nozzle row at the position A overlaps with the spray nozzle row in the row direction. Of course, the positions of the spray nozzles may not be overlapped between the position A and the position B.

When the spray bar 4 is at the lowest position, the distance from the spray nozzle to the road surface 7 is at least 10 cm or more, assuming that the road surface 7 has various irregularities or laid objects. Is preferably 15 cm or more, more preferably 20 cm or more. Also,
When the spray bar 4 is at the uppermost position, the distance from the spray nozzle to the road surface 7 is such that the spray pattern is not disturbed by wind or the like, and the sprayed liquid material does not disperse into the air as a mist. As described above, it is preferable that the width be 50 cm or less. It is desirable that the reciprocating speed of the spray nozzle row be sufficiently faster than, for example, the traveling speed of the work vehicle equipped with the road surface liquid spraying device of the present invention, that is, the spraying speed.

In the above example, the straight line drawn by the moving trajectory of the spray nozzle is either in the horizontal plane or in the vertical plane including the flat surface of the flat type spray pattern. The straight line drawn by
The present invention is not limited to this, and it is possible to face the appropriate direction according to the spray nozzle to be used, the overlapping number of the ejection pattern to be obtained, and the like.

FIG. 6 is a plan view showing an example in which two spray nozzle rows are provided. The two spray bars 4-1 and 4-2 constituting each spray nozzle row are, for example, one of the spray bars. When 4-1 is in the position of A, the other spray bar 4-2 is in the position of A ′, and when one of the spray bars 4-1 is in the position of B, the other spray bar 4 -2 are 1 to each other, as in position B '.
It is configured to move in a horizontal plane with a phase difference of 80 degrees. In the case of FIG. 6, since the mounting angle β of each spray nozzle to the spray bars 4-1 and 4-2 is the same,
The straight line drawn by the movement trajectory of each spray nozzle is parallel through the spray bars 4-1 and 4-2, but the mounting angle β of the spray nozzle to each spray bar 4-1 and 4-2 is The lines may be different for each bar. In this case, the straight lines drawn by the movement trajectories of the spray nozzles constituting the spray bars 4-1 and 4-2 are not parallel.

As shown in FIG. 6, the two spray nozzle rows move with a phase difference of 180 degrees from each other, so that more uniform spraying becomes possible. In the example of FIG. 6, each of the spray bars 4-1 and 4-2 is configured to move in the same horizontal plane, but moves in different horizontal planes by changing the mounting height of each spray bar. In this case, two spray bars 4-1 and 4-2 may be used.
Can partially overlap with each other. When the number of the spray nozzle rows is three, the phase difference is preferably 120 degrees, and when the number of the spray nozzle rows is four, the phase difference is preferably 90 degrees. In general, n is the number of the spray nozzle rows. Each phase difference is preferably set to (360 / n) degrees. It is also possible to move a plurality of spray bars integrally without phase difference by attaching them to a single drive device. The plurality of spray nozzle rows can be moved independently of each other without synchronization. However, the synchronization is simpler in terms of the mechanical configuration, and the uniformity of the obtained spray is excellent.

FIG. 7 is a side view showing an example of the case where two spray nozzle rows are moved so that the movement trajectory of the spray nozzles draws a straight line in a vertical plane. In FIG. -1 is in front, spray bar 4
-2 is on the other side. In such a state, the two spray bars 4-1 and 4-2 are arranged so that, for example, when one of the spray bars 4-1 is at the position A, the other spray bar 4-2 is at the position A '. And one of the spray bars 4-1
Is in position B, the other spray bar 4-2
Are configured to move with a phase difference of 180 degrees from each other so as to be at the position B ′. Since the spray angle α of each spray nozzle is the same through the spray bars 4-1 and 4-2, the straight lines drawn by the movement trajectories of the spray nozzles are all parallel, but
The spray angle α of the spray nozzle in each of the spray bars 1 and 4-2 may be different for each spray bar. In this case, the spray bar 4-1 and the spray bar 4-2 have different spray nozzles. The straight line drawn by the moving trajectory is no longer parallel. Also, even if the spray angle α of each spray nozzle is the same through the spray bars 4-1 and 4-2, the straight lines drawn by the spray nozzles are tilted by the angle α / 2 in opposite directions with respect to the vertical line. Each spray bar 4
It is also possible to exercise -1, 4-2. That each of the spray bars 4-1 and 4-2 may be moved in the same phase, and may be moved without being synchronized.
FIG. 6 shows that three or more spray nozzle arrays may be used.
Is the same as

In the above example, when there are a plurality of spray nozzle rows, all of the plurality of spray nozzle rows are moved, but only some of the plurality of spray nozzle rows are moved. Of course, it may be made to exercise. For example, in the example of FIG. 6, it is possible to move only the other spray bar 4-2 without moving one of the spray bars 4-1. The same applies to the example of FIG. Further, it is also possible to appropriately stop the plurality of spray nozzle rows at a position convenient for realizing uniform spraying and use them according to the situation of the construction site. The stop may be continued throughout the application of the liquid material, or may be repeated at regular intervals or at random time intervals.

In the above example, the characteristics and number of the spray nozzles constituting each spray nozzle row, and the installation intervals are the same between the spray nozzle rows, but when a plurality of spray nozzle rows are used. It is also possible to change the characteristics and number of the spray nozzles constituting the spray nozzle row, and further, the installation interval for each spray nozzle row so that a desired spray pattern can be realized by each spray nozzle row. is there. Furthermore, depending on the required spray width of the liquid material, the length of the spray bar can be varied, for each individual spray nozzle attached to each spray nozzle, or for every two or more spray nozzles. It goes without saying that the spray width can be freely adjusted by controlling the injection of the liquid material on and off. On / off control of the injection of the liquid material from the spray nozzle is usually performed by, for example, an electromagnetic valve or the like.

Hereinafter, the present invention will be described in more detail with reference to Examples.

<Embodiment 1> The present invention will be described with reference to FIGS.
Create a road surface liquid sprayer, mount it on a work vehicle,
The material was sprayed. Details are as follows. Number of spray bars: 1 Type of spray nozzle: Flat type (spray angle α: 60
Degree) Spray nozzle mounting angle β: 20 degrees Spray nozzle mounting interval w: 7.2 cm Distance from spray nozzle to road surface H: 20 cm Spray nozzle row motion: linear reciprocating motion in horizontal plane (sp
Angle to Reynolds nozzle row direction: 20 degrees, amplitude L: 1
0 cm, movement speed: 3 reciprocations / second) Number of sprays on the road surface: triple spray (spray amount: 1.5 l)
Tol / m²Liquid material to be sprayed: Asphalt emulsion (trade name "Sanpi
-Sol ", manufactured by Nichireki Co., Ltd.) Spraying pressure: 1kgf / cm²  Spraying speed: 2m / min

Using the above road surface liquid spraying apparatus and liquid material, spraying was performed over a width of 1.5 m and a length of 10 m. Spraying, so that unevenness of spraying can be clearly observed,
A white nonwoven fabric was put on the road surface, and the operation was performed from above. After spraying,
The spray surface was visually observed, but no uneven spray was observed.

Comparative Example 1 A liquid material was sprayed in the same manner as in Example 1 except that the spray nozzle row was not moved. After spraying, when the spraying surface was visually observed, a plurality of line-like spray unevenness along the construction direction was observed.

<Example 2> A road surface liquid spraying device capable of reciprocating a spray nozzle array so that a movement locus of the spray nozzle draws a straight line in a vertical plane including a flat surface of a flat spray pattern is manufactured. , Except that the movement of the spray nozzle was a reciprocating movement in the vertical plane (amplitude L: 7.5 cm, movement speed: 3 reciprocations / second), and the distance from the spray nozzle to the road surface was 13.5 cm at the lowest position. The liquid material was sprayed in the same manner as in Example 1. After spraying,
The spray surface was visually observed, but no uneven spray was observed.

<Comparative Example 2> A liquid material was sprayed in the same manner as in Example 2 except that the spray nozzle row was not moved. After spraying, when the spraying surface was visually observed, a plurality of line-like spray unevenness along the construction direction was observed.

<Embodiment 3> An apparatus for dispersing aggregates as disclosed in Japanese Patent Application No. 10-158664 by the same applicant is attached to the rear of the working vehicle used in Embodiment 1, and white on the road surface. The same asphalt emulsion as in Example 1 was directly scattered without forming a nonwoven fabric, and at the same time, aggregate was scattered from the scattered surface, and a scatter surface treatment method was applied. As the aggregate, crushed stone having a particle size of 5 to 8 mm (produced by Kuzu, Tochigi Prefecture) was used.
1 (liter / m ² ), aggregate 9.0 (liter / m ² )
Met. After spraying the aggregate, the sprayed surface was lightly compacted to remove the floating stone, and the sprayed surface was visually observed, but no seepage of the asphalt emulsion to the sprayed surface was observed. Also,
Immediately after the visual observation, the vehicle was passed through a heavy-loading vehicle 30 times on a test basis, but no aggregate was scattered.

[0043]

As described above, according to the road surface liquid spraying apparatus of the present invention, one or a plurality of spray nozzle rows composed of a plurality of spray nozzles are arranged such that the movement locus of each spray nozzle is linear. Can be reciprocated so that even if the spray characteristics among the spray nozzles used vary, and the spray amount of each spray nozzle is not uniform in terms of location. Even so, these variations and non-uniformities cancel each other out, and it is possible to achieve a highly uniform distribution of the liquid material. Therefore, a spray nozzle that can be used freely can be selected and used from among commercially available standard spray nozzles, thereby increasing the degree of freedom in device design and manufacturing a high-performance road surface liquid spraying device at low cost. Can be. In addition, even when replacing individual spray nozzles due to failure etc., commercially available standard products are sufficient,
There is an advantage that the maintenance management of the device is extremely easy. The road surface liquid spraying device of the present invention is particularly effective in a method requiring a high degree of uniformity of spraying, such as a spraying type surface treatment method, and performs a single operation together with an aggregate spraying device. By being mounted on a vehicle, it exhibits excellent performance as a spray-type surface treatment work vehicle, and brings new possibilities to the technical field.

[Brief description of the drawings]

FIG. 1 is a diagram showing a variation in an injection amount from a single spray nozzle.

FIG. 2 is a side view showing an example of the road surface liquid spraying device of the present invention.

FIG. 3 is a plan view showing an example of the road surface liquid spraying device of the present invention.

FIG. 4 is a diagram showing the relationship between the movement of a spray bar and an ejection pattern.

FIG. 5 is a view showing another example of the road surface liquid spraying device of the present invention.

FIG. 6 is a diagram illustrating an example of a case where two spray nozzle arrays are used.

FIG. 7 is a diagram showing another example when two spray nozzle arrays are used.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Road surface liquid spraying apparatus 2 Work vehicle 3 Spray nozzle 4 Spray bar 5 Spray pattern 6 Drive mechanism 7 Road surface 8 Guide rail 9 Guide ring 10 Drive 11 Rotation axis α Spray angle β Mounting angle L Motion amplitude N Spray position P Spray Quantity w Spray nozzle installation interval

Claims (12)

[Claims] At least one spray nozzle array comprising a plurality of spray nozzles arranged in a straight line, and a mechanism for reciprocating the spray nozzle array so that the movement locus of each spray nozzle draws a straight line. Road surface liquid spraying device comprising: 2. The spray nozzle according to claim 1, wherein the spray nozzle has a flat spray pattern, and the flat surface of the flat spray pattern sprayed from the spray nozzle has an angle of 0 to 90 degrees with respect to the row direction of the spray nozzle row. The road surface liquid spraying device according to claim 1, wherein the device is disposed so as to have an angle β. 3. The road surface liquid spraying apparatus according to claim 2, wherein the angle β of each spray nozzle is the same in at least one spray nozzle row. 4. A mechanism for reciprocating the spray nozzle row so that the movement locus of the spray nozzle is in a horizontal plane and draws a straight line inclined by an angle β with respect to the row direction of the spray nozzle row. The road surface liquid spraying device according to claim 3. 5. The movement trajectory of the spray nozzle is in a vertical plane including a flat surface of a flat spray pattern,
5. The road surface liquid dispersing apparatus according to claim 3, further comprising a mechanism for reciprocating the spray nozzle row so as to draw a straight line inclined by half the spray angle of the spray nozzle from the vertical direction. 6. An array of two or more spray nozzles,
6. The road surface liquid spraying apparatus according to claim 1, further comprising a mechanism for moving at least one of the spray nozzle rows in the same phase or with a mutually equal phase difference. 7. The liquid spraying device for road surface according to claim 1, wherein the speed and / or amplitude of the movement of the spray nozzle row is adjustable. 8. The road surface liquid spraying device according to claim 1, wherein a plurality of spray nozzles constituting the spray nozzle row are attached to the spray bar. 9. The vehicle according to claim 1, which is attached to a working vehicle.
The road surface liquid spraying device according to 2, 3, 4, 5, 6, 7, or 8. 10. A work vehicle equipped with the road surface liquid spraying device according to claim 1, 2, 3, 4, 5, 6, 7, or 8. 11. The apparatus according to claim 1, further comprising an aggregate dispersing device.
0 described work vehicle. 12. The work vehicle according to claim 10, which is a work vehicle for a spray-type surface treatment method.