Road surface construction device and road surface construction method

Abstract

To provide a road surface construction device capable of applying a surface treatment mixture thinly and uniformly.SOLUTION: A road surface construction device 1 used for applying a surface treatment mixture containing a mortar material onto a road surface comprises a main body 10 having a rectangular frame shape, and a brush unit 40 provided on the main body 10. The main body 10 includes two first plate-shaped members 20a, 20b arranged along a first direction, and two second plate-shaped members 20c, 20d arranged along a second direction intersecting the first plate-shaped members 20a, 20b. The brush unit 40 includes a plurality of linear members 41 and a holding unit 42 that holds the linear members 41. The linear members 41 protrude from a lower end of the main body 10. The brush unit 40 includes first brush units 40a, 40b provided on the first plate-shaped members 20a, 20b.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a road surface construction device used for applying a surface treatment mixture or the like to a road surface such as a road pavement, and a road surface construction method using the road surface construction device. [Background technology]

[0002] Generally, asphalt and concrete pavements are directly subjected to traffic loads and exposed to rain and ultraviolet rays, which causes deterioration such as roughness and cracks on the surface, which gradually progresses inward and eventually leads to damage. Preventive maintenance methods are used to prevent damage caused by such deterioration or to maintain the pavement by carrying out appropriate repairs.

[0003] As such a preventive maintenance method, a surface treatment method using a surface treatment mixture is generally known. For example, Patent Document 1 discloses a truck-mounted construction device equipped with a tank, a mixer, and a spreader box as a device for spreading a room temperature slurry agent mainly composed of asphalt mortar on a road surface. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2000-027105 A Summary of the Invention [Problem to be solved by the invention]

[0005] Preventive maintenance methods aimed at maintaining existing pavements are required to be able to be applied at low cost. However, in order to perform surface treatment using the above-mentioned application device, it is necessary to apply the surface treatment mixture at a certain thickness or more, which poses the problem of requiring a large amount of material and increasing costs. On the other hand, if an attempt is made to apply the surface treatment mixture thinly using the above-mentioned application device, the thickness of the surface treatment layer becomes non-uniform, which leads to a problem of poor pavement quality. The problem that the present invention aims to solve is to provide a road surface application device that enables the application of the surface treatment mixture at a thin and uniform thickness. [Means for solving the problem]

[0006] [1] According to a first aspect of the present invention, there is provided a road surface construction device comprising a main body having a rectangular frame shape and a brush portion provided on the main body, the main body including two first plate-shaped members arranged along a first direction and two second plate-shaped members arranged along a second direction intersecting the first plate-shaped members, the brush portion comprising a plurality of linear members and a holding portion for holding the linear members, the linear members protruding from a lower end of the main body, and the brush portion including a first brush portion provided on the first plate-shaped members.

[0007] [2] According to a second aspect of the present invention, there is provided the road surface construction device of the first aspect, wherein the brush section includes a second brush section provided on the second plate-shaped member.

[0008] [3] According to aspect 3 of the present invention, there is provided a road surface construction device of aspect 1 or 2, wherein the main body portion includes a third plate-shaped member between the two first plate-shaped members, connected to the two second plate-shaped members and arranged along the first direction, and the brush portion includes a third brush portion provided on the third plate-shaped member.

[0009] [4] According to aspect 4 of the present invention, there is provided a road surface construction device of any of aspects 1 to 3, wherein the main body portion includes a first auxiliary member provided on the first plate-shaped member, and the linear member of the first brush portion is sandwiched between the first plate-shaped member and the first auxiliary member.

[0010] [5] According to aspect 5 of the present invention, there is provided a road surface construction device of aspect 2, wherein the main body portion is provided with a second auxiliary member attached to the second plate-shaped member, and the linear member of the second brush portion is sandwiched between the second plate-shaped member and the second auxiliary member.

[0011] [6] According to aspect 6 of the present invention, there is provided a road surface construction device of aspect 3, wherein the main body portion is provided with a third auxiliary member attached to the third plate-shaped member, and the linear member of the third brush portion is sandwiched between the third plate-shaped member and the third auxiliary member.

[0012] [7] According to a seventh aspect of the present invention, there is provided the road surface construction device of the fifth aspect, wherein the lower end of the second auxiliary member is positioned lower in the vertical direction than the lower end of the second plate-shaped member.

[0013] [8] According to aspect 8 of the present invention, there is provided a road surface construction device of aspect 5 or 7, wherein the second auxiliary member is provided with a plate-shaped protrusion portion protruding from an end portion in the longitudinal direction of the second auxiliary member.

[0014] [9] According to a ninth aspect of the present invention, there is provided the road surface construction device of the eighth aspect, wherein the protrusion has a curved shape.

[0015]

[10] According to a tenth aspect of the present invention, there is provided the road surface construction device according to any one of the first to ninth aspects, wherein the linear members have a protruding length from the main body of 5 to 50 mm.

[0016]

[11] According to aspect 11 of the present invention, there is provided a road surface construction method using the road surface construction device of any of aspects 1 to 10, comprising: a preparation step of placing a surface treatment mixture inside the main body; and an application step of towing the road surface construction device and applying the surface treatment mixture onto the road surface.

[0017]

[12] According to aspect 12 of the present invention, there is provided a road surface construction method according to aspect 11, wherein the application step includes applying a brush finishing process to the surface of the surface treatment mixture using the brush section. Effect of the Invention

[0018] The road surface construction device of the present invention makes it possible to apply the surface treatment mixture thinly and uniformly. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a perspective view showing the overall configuration of a road surface construction device in an embodiment of the present invention. [Diagram 2] FIG. 2 is a plan view of the road surface construction device in the embodiment of the present invention. [Diagram 3] FIG. 3 is a bottom view of the road surface construction device in the embodiment of the present invention. [Figure 4] 4(a) is a cross-sectional view taken along line IVa-IVa in FIG. 2, and FIG. 4(b) is a cross-sectional view taken along line IVb-IVb in FIG. [Diagram 5] FIG. 5 is a side view of a road surface construction device in an embodiment of the present invention. [Figure 6] FIG. 6 is a diagram showing a configuration of a brush unit in an embodiment of the present invention. [Figure 7] FIG. 7 is a cross-sectional view showing a preparation step in a road surface construction method using a road surface construction device in an embodiment of the present invention. [Figure 8] FIG. 8 is a cross-sectional view showing a coating step in a road surface construction method using a road surface construction device in an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0021] FIG. 1 is a perspective view showing the overall configuration of a road surface construction device 1 in this embodiment, FIG. 2 is a plan view of the road surface construction device 1 in this embodiment, and FIG. 3 is a bottom view of the road surface construction device 1 in this embodiment.

[0022] The road surface construction device 1 in this embodiment is a device used to apply a surface treatment mixture containing a mortar material onto a pavement surface such as an asphalt pavement or a concrete pavement, and form a thin surface treatment layer. Examples of the surface treatment mixture include a mixture of a mortar material containing cement and aggregate, and a polymer emulsion (polymer cement mortar). Examples of cement include Portland cement, mixed cement, and ecocement. Examples of polymer emulsions include an emulsion of an acrylic polymer, an emulsion of a vinyl acetate polymer, an emulsion of a butadiene polymer, and an emulsion of natural rubber. The surface treatment mixture may further contain additives that are commonly used in pavement surfaces, such as a hardening accelerator, a fluidizing agent, an antifoaming agent, a retarder, a filler, a vegetable fiber, and a pigment.

[0023] When the surface treatment mixture is applied onto a paved road surface, the polymer emulsion reacts with the mortar material, causing a hardening reaction, and a surface treatment layer with excellent adhesion and durability is formed on the paved road surface.

[0024] As shown in Figs. 1 to 3, the road surface construction device 1 in this embodiment includes a main body (device main body) 10 having a rectangular frame shape and a plurality of brush units 40a to 40e. The main body 10 includes a bottom opening 11, an upper opening 12, a front plate 20a, a rear plate 20b, side plates 20c and 20d, and a partition plate 20e. The brush units 40a to 40e are attached to the front plate 20a, the rear plate 20b, the side plates 20c and 20d, and the partition plate 20e, respectively. Hereinafter, the front plate 20a, the rear plate 20b, the side plates 20c and 20d, and the partition plate 20e will be collectively referred to simply as the plate member 20. The brush units 40a to 40e will be collectively referred to simply as the brush unit 40. The main body portion 10 in this embodiment corresponds to an example of a "main body portion" in this aspect of the present invention, the brush portion 40 in this embodiment corresponds to an example of a "brush portion" in this aspect of the present invention, the brush portions 40a and 40b in this embodiment correspond to an example of a "first brush portion" in this aspect of the present invention, the brush portions 40c and 40d in this embodiment correspond to an example of a "second brush portion" in this aspect of the present invention, and the brush portion 40e in this embodiment corresponds to an example of a "third brush portion" in this aspect of the present invention.

[0025] The main body 10 is provided with a towing section 13 attached to the front plate 20a. As described later, the road surface construction device 1 in this embodiment is placed on the road surface, and is used by holding and towing the towing section 13 with the surface treatment mixture disposed inside the main body 10 from the upper opening 12. By towing the road surface construction device 1, the surface treatment mixture disposed inside the main body 10 is sent out from the gap between the main body 10 and the road surface through the bottom opening 11 to the rear of the road surface construction device 1. At this time, as will be described in detail later, the brush section 40 slides on the road surface and the surface treatment mixture, so that the surface treatment mixture is applied to the road surface and spread evenly to a uniform thickness, and the surface of the surface treatment mixture is brush-finished. In this embodiment, the towing section 13 is composed of two rod-shaped members and is rotatably attached to the front plate 20a, but the configuration of the towing section 13 is not particularly limited thereto.

[0026] The material constituting the plate member 20 is not particularly limited, but metal materials such as iron plate and steel material can be used. The thickness of the plate member 20 is preferably 2 to 9 mm, more preferably 3 to 6 mm. The front plate 20a and the rear plate 20b are arranged substantially parallel to each other along the X direction in the figure, and the side plates 20c and 20d are arranged substantially parallel to each other along the Y direction in the figure, intersecting with the front plate 20a and the rear plate 20b. That is, the rectangular frame shape of the main body 10 is formed by the front plate 20a, the rear plate 20b, and the side plates 20c and 20d. In this embodiment, the longitudinal length of the front plate 20a and the rear plate 20b is longer than the longitudinal length of the side plates 20c and 20d, but is not particularly limited thereto, and the side plates 20c and 20d may be longer than the front plate 20a and the rear plate 20b.

[0027] Although not particularly limited, a plate-shaped thickness adjusting portion 21 is provided on the lower (lower in the Z direction) side surface of the plate member 20 (see Figs. 4(a) and 4(b)). The thickness adjusting portion 21 can be made of the same material as the plate member 20. The lower end of the thickness adjusting portion 21 is configured to coincide with the lower end of the plate member 20.

[0028] The front plate 20a and the rear plate 20b in this embodiment correspond to an example of a "first plate-like member" in the present invention, and the side plates 20c, 20d in this embodiment correspond to an example of a "second plate-like member" in the present invention.

[0029] The partition plate 20e is disposed between the front plate 20a and the rear plate 20b along the X direction in the drawing so as to connect to the inner surfaces of the side plates 20c, 20d. The position of the partition plate 20e is not particularly limited, but is preferably located at a position where the ratio (D1:D2) of the distance D1 from the front plate 20a to the partition plate 20e and the distance D2 from the rear plate 20b to the partition plate 20e is 1:1 to 10:1, and more preferably 3:1 to 8:1. The partition plate 20e in this embodiment corresponds to an example of the "third plate-like member" in the present invention.

[0030] Although not particularly limited, in the road surface construction device 1, the area S1 between the front plate 20a and the partition plate 20e is an area (placement area) for placing the surface treatment mixture. Also, in the road surface construction device 1, the area S2 between the partition plate 20e and the rear plate 20b is an area (adjustment area) where the surface treatment mixture is spread evenly. As will be described in detail later, by providing the road surface construction device 1 with the partition plate 20e and the brush part 40e, the thickness of the surface treatment mixture in the road surface width direction (X direction) can be uniformly leveled in the adjustment area S2, and the thickness of the surface treatment layer can be made more uniform.

[0031] The main body 10 further comprises a top plate 14 provided to connect the front plate 20a and the rear plate 20b, and an adjustment rod 15 provided on the top plate 14. The top plate 14 and the adjustment rod 15 can be made of the same material as that of the plate member 20. As will be described later, by attaching a weight to the adjustment rod 15, it is possible to control the attitude of the road surface construction device 1 when towing the road surface construction device 1. It is noted that the road surface construction device 1 does not necessarily have to comprise the top plate 14 and the adjustment rod 15.

[0032] As shown in Fig. 1 and Fig. 2, the main body 10 includes auxiliary members 30a to 30e attached to the lower side surfaces of the front plate 20a, the rear plate 20b, the side plates 20c and 20d, and the partition plate 20e. Hereinafter, the auxiliary members 30a to 30e are collectively referred to simply as auxiliary members 30. Each of the auxiliary members 30 has a plate-like shape and is disposed approximately parallel to the corresponding plate member 20. The auxiliary members 30a and 30b in this embodiment correspond to an example of a first auxiliary member in the aspect of the present invention, the auxiliary members 30c and 30d in this embodiment correspond to an example of a "second auxiliary member" in the aspect of the present invention, and 30e in this embodiment corresponds to an example of a "third auxiliary member" in the aspect of the present invention.

[0033] 4(a) is a cross-sectional view taken along line IVa-IVa in FIG. 2, and FIG. 4(b) is a cross-sectional view taken along line IVb-IVb in FIG.

[0034] As shown in Fig. 4(a) and Fig. 4(b), the auxiliary member 30 includes a main body 31 and a thickness adjusting portion 32 provided on a surface of the main body 31 facing the plate member 20. The main body 31 and the thickness adjusting portion 32 are both plate-like members having a length equal to the longitudinal length of the corresponding plate member 20. The main body 31 and the thickness adjusting portion 32 are made of a metal material such as stainless steel, although there is no particular limitation thereto. The thickness of the main body 31 is preferably 2 to 9 mm, and more preferably 3 to 6 mm.

[0035] As shown in Fig. 4(a) and Fig. 4(b), the main body 31 of the auxiliary member 30 is attached to the plate member 20 such that a connection portion 43 (described later) of the brush portion 40 is sandwiched between the main body 31 and the plate member 20 via the spacer 50. As a result, a space is formed between the auxiliary member 30, the spacer 50, and the plate member 20, and the brush portion 40 is disposed in this space. The spacer 50 is a plate-like member having a length equivalent to the longitudinal length of the plate member 20, and is made of the same material as the plate member 20, although it is not particularly limited. Through holes are formed in the main body 31 and the spacer 50, and the main body 31 and the spacer 50 are screwed to the side surface of the plate member 20 by bolts 60.

[0036] The thickness adjustment portion 32 of the auxiliary member 30 contacts the bundle of linear members 41 (described later) of the brush part 40, and sandwiches the bundle of linear members 41 between the thickness adjustment portion 21 of the plate member 20. Note that this is not particularly limited, and the auxiliary member 30 may not include the thickness adjustment portion 32, and the plate member 20 may not include the thickness adjustment portion 21. In other words, the bundle of linear members 41 may be sandwiched between the main body part 31 and the plate member 20.

[0037] As shown in FIG. 4(a), the lower surfaces of the auxiliary members 30a, 30b, and 30e provided on the front plate 20a, the rear plate 20b, and the partition plate 20e are configured so that their vertical heights match those of the lower surfaces of the front plate 20a, the rear plate 20b, and the partition plate 20e, respectively. On the other hand, as shown in FIG. 4(b), the lower surfaces of the auxiliary members 30c and 30d provided on the side plates 20c and 20d are configured so that they are positioned vertically lower than the lower surfaces of the side plates 20c and 20d. That is, in this embodiment, the lower ends of the auxiliary members 30c and 30d are positioned at the lowest position in the main body 10. Therefore, when the road surface construction device 1 is placed on the road surface, the lower surfaces of the auxiliary members 30c and 30d come into contact with the road surface, and the entire road surface construction device 1 is supported by the auxiliary members 30c and 30d. The auxiliary members 30c, 30d are arranged parallel to the side plates 20c, 20d, respectively, and extend along the towing direction of the road surface construction device 1. Therefore, by configuring the road surface construction device 1 to be supported by the auxiliary members 30c, 30d, the road surface construction device 1 can be easily towed, and the width of the surface treatment layer formed by the surface treatment mixture can be made more uniform. In addition, the auxiliary members 30c, 30d come into contact with the road surface, and thus the surface treatment mixture arranged inside the road surface construction device 1 can be prevented from leaking out of the main body 10 in the width direction, so that the ends of the surface treatment layer can be shaped along the auxiliary members 30c, 30d, improving the finish of the ends.

[0038] In this embodiment, as shown in Fig. 4(b), the lower surfaces of the main body parts 31c, 31d and the lower surfaces of the thickness adjustment parts 32c, 32d are at the same height, but this is not particularly limited. For example, the lower surfaces of the thickness adjustment parts 32c, 32d may be positioned lower than the lower surfaces of the main body parts 31c, 31d, and the entire road surface construction device 1 may be supported by the thickness adjustment parts 32c, 32d.

[0039] FIG. 5 is a side view of the road surface construction device 1 in this embodiment.

[0040] As shown in Figs. 1 and 5, the auxiliary members 30c and 30d provided on the side plates 20c and 20d further include protrusions 33c and 33d protruding from one end of the main body 31c and 31d in the longitudinal direction. The protrusions 33c and 33d are made of a plate-like member having the same thickness as the main body 31c and 31d, although this is not particularly limited. The lower surfaces of the protrusions 33c and 33d are configured to be continuous with the lower surfaces of the main body 31c and 31d. The lower surfaces of the protrusions 33c and 33d have a curved shape with a constant radius of curvature R that is curved so that the position of the lower surface becomes higher as it moves away from the main body 31c and 31d. The shape of the lower surface of the protrusions 33c and 33d is not particularly limited as long as it is a shape that becomes higher as it moves away from the main body 31c and 31d. For example, the shape of the lower surface of the protrusions 33c, 33d may be a curved shape that does not have a constant radius of curvature, or may be a tapered shape.

[0041] In this embodiment, the protrusions 33c and 33d are provided at one end of the main body 31c and 31d, but the positions of the protrusions 33c and 33d are not particularly limited thereto. For example, the protrusions 33c and 33d may be provided at one end in the longitudinal direction of the thickness adjusting parts 32c and 32d.

[0042] The auxiliary members 30c, 30d are provided with the protrusions 33c, 33d, which prevents the corners of the auxiliary members 30c, 30d from coming into contact with the road surface when the road surface construction device 1 is towed. This makes it easier to tow the road surface over the road surface, and also prevents damage to the road surface caused by contact between the auxiliary members 30c, 30d and the road surface.

[0043] FIG. 6 is a diagram showing the configuration of the brush unit 40 in this embodiment.

[0044] As shown in Fig. 4(a) and Fig. 4(b), the brush parts 40a to 40e are attached to the sides of the front plate 20a, the rear plate 20b, the side plates 20c and 20d, and the partition plate 20e, respectively. As shown in Fig. 6, the brush part 40 includes a plurality of linear members 41, a holding part 42, and a connecting part 43. The linear members 41 are made of a resin material such as polypropylene, although it is not particularly limited. The line width of the linear members 41 is not particularly limited, but is preferably 0.1 to 1 mm, and more preferably 0.3 to 0.6 mm. The length of the linear members 41 is not particularly limited, but is preferably 30 to 100 mm. The plurality of linear members 41 are bundled together and held by the holding part 42.

[0045] As shown in FIG. 6 and other figures, the linear member 41 is a straight member, but when the road surface construction device 1 is placed on the road surface, the protruding portion of the linear member 41 from the main body 10 is deformed so as to bend along the road surface (see FIG. 7). That is, when the road surface construction device 1 is placed on the road surface, the linear member 41 of the brush part 40 can be deformed to follow the convex parts of the road surface and can enter the concave parts of the road surface. This allows the surface treatment mixture to be applied appropriately according to the uneven shape of the road surface, so that the thickness of the layer made of the surface treatment mixture can be made uniform. In addition, since the brush part 40 deforms to follow the uneven shape of the road surface, no gap is generated between the road surface construction device 1 and the road surface, so that the surface treatment mixture arranged inside the road surface construction device 1 is prevented from leaking out to the outside, and the thickness of the layer made of the surface treatment mixture can be made uniform.

[0046] The linear members 41 of the brush parts 40a to 40e are configured so that the height position of the lower end coincides with the height position of the lower end of the linear members 41 of the other brush parts 40a to 40e. The linear members 41 of the brush parts 40a to 40e protrude from the lower end of the main body part 10. The protruding length of the linear members 41 of the brush parts 40a to 40e from the lower end of the main body part 10 is preferably 5 to 50 mm, more preferably 10 to 30 mm. As described above, the lower end of the main body part 10 in this embodiment is the lower end (lower surface) of the auxiliary members 30c, 30d. That is, in this embodiment, as shown in FIG. 4(b), the length of the linear members 41 of the brush parts 40c, 40d and the mounting positions of the brush parts 40c, 40d are adjusted so that the protruding length L from the lower end of the auxiliary members 30c, 30d is 5 to 50 mm. Further, brush parts 40a, 40b are configured such that the positions of the lower ends of linear members 41 of brush parts 40a, 40b coincide with the positions of the lower ends of linear members 41 of brush parts 40c, 40d. By setting the protruding length of linear members 41 from main body part 10 within the above range, it becomes easier to control the thickness of the layer made of the surface treatment mixture to be thin (to about 1 to 2 mm).

[0047] The brush part 40b attached to the rear plate 20b also has the function of applying a brush finish to the surface of the layer made of the surface treatment mixture, as described below. The brush part 40b slides over the layer made of the surface treatment mixture, thereby applying a brush finish to the surface of the layer made of the surface treatment mixture, improving the appearance of the road surface after construction. The length of the brush part 40b may be about 10 to 30 mm longer than the other brush parts. This allows for more appropriate control of the thickness and finish of the layer made of the surface treatment mixture.

[0048] As shown in FIG. 4(a) and FIG. 4(b), in this embodiment, the bundle of linear members 41 of the brush part 40 is sandwiched between the auxiliary member 30 and the plate member 20. As a result, the width W of the lower end of the bundle of linear members 41 is controlled to about 5 to 20 mm in the length in the direction perpendicular to the surface of the plate member 20. The width W of the lower end of the bundle of linear members 41 is preferably 5 to 20 mm, more preferably 10 to 15 mm. By setting the width W of the lower end of the bundle of linear members 41 within the above range, even if the bundle of linear members 41 contains the surface treatment mixture when applying the surface treatment mixture to the road surface using the road surface construction device 1, it is possible to suppress the bundle of linear members 41 from expanding. Therefore, it is possible to suppress the application of the surface treatment mixture to unintended places on the road surface due to the expansion of the bundle of linear members 41, and to improve the surface finish of the layer made of the surface treatment mixture.

[0049] The holding portion 42 is configured by bending a plate-like member made of metal such as stainless steel, and as shown in Figures 4(a) and 4(b), it holds the multiple linear members 41 by clamping them from above. The structure of the holding portion 42 is not particularly limited to this, as long as it has a structure that can hold the linear members 41.

[0050] The connecting portion 43 is formed integrally with the holding portion 42 by a metal plate-like member, although not particularly limited thereto. A plurality of through holes 44 are formed in the connecting portion 43, and as shown in FIG. 4(a) and FIG. 4(b), the entire brush portion 40 is attached to the main body portion 10 by screwing the connecting portion 43 with a bolt 60 through the through hole 44. As shown in FIG. 6, the through hole 44 has a vertically elongated shape along the extending direction of the linear member 41. The vertical length of the through hole 44 is, although not particularly limited thereto, about 2 to 5 times the diameter of the bolt 60. By forming the through hole 44 in such a vertically elongated shape, it is possible to adjust the position of the bolt 60 in the through hole 44, and therefore it is possible to adjust the mounting position of the brush portion 40 in the vertical direction relative to the main body portion 10. In particular, by adjusting the mounting position of the central brush portion 40e in the vertical direction, the coating thickness of the surface treatment mixture can be more appropriately adjusted. Furthermore, by adjusting the vertical attachment position of the rear brush portion 40b, it is possible to adjust the strength of the brush finishing process on the layer of surface treatment mixture, and thereby adjust the appearance of the road surface after construction.

[0051] Next, a method for applying a surface treatment mixture using the road surface construction device 1 in this embodiment will be described. The method for applying a surface treatment mixture in this embodiment includes a preparation step of placing the surface treatment mixture inside the main body 10, and an application step of towing the road surface construction device 1 and applying the surface treatment mixture onto the road surface. As will be described later, the application step includes applying a brush finish to the surface of the surface treatment mixture using the brush part 40. FIG. 7 is a cross-sectional view showing the preparation step in the method for applying a surface treatment mixture using the road surface construction device 1 in this embodiment, and FIG. 8 is a cross-sectional view showing the application step in the method for applying a surface treatment mixture using the road surface construction device 1 in this embodiment.

[0052] First, in the preparation step, the road surface construction device 1 is placed on the road surface Z as shown in FIG. 7. At this time, the lower surfaces of the auxiliary members 30c and 30d come into contact with the road surface Z, and the road surface construction device 1 is supported by the auxiliary members 30c and 30d. Next, the surface treatment mixture M, which has been mixed in advance by a mixer or the like, is poured from the upper opening 12, and the surface treatment mixture M is placed in the placement area S1 between the front plate 20a and the partition plate 20e. When the road surface construction device 1 is placed on the road surface Z, the linear member 41 of the brush part 40 is deformed to follow the convex portion on the road surface Z and enters the concave portion on the road surface Z, so that no gap is formed between the road surface construction device 1 and the road surface Z. As a result, the surface treatment mixture M is retained inside the road surface construction device 1 without leaking out to the outside of the road surface construction device 1.

[0053] Next, in the application step, as shown in Fig. 8, the towing section 13 of the road surface construction device 1 is held by connecting it to a moving device (not shown) such as a manual or automatic cart, and the road surface construction device 1 is towed forward (in the Y direction in the figure) manually or by the moving device. As the road surface construction device 1 is towed, a part of the surface treatment mixture M moves from the gap between the lower surface of the partition plate 20e and the road surface Z to the adjustment region S2 between the partition plate 20e and the rear plate 20b inside the road surface construction device 1. At this time, the brush section 40e attached to the partition plate 20e slides on the road surface Z and the surface treatment mixture M, so that the surface treatment mixture M is spread evenly in the road surface width direction, and the thickness of the surface treatment mixture M in the width direction of the road surface Z is adjusted to a uniform thickness (about 1 to 2 mm).

[0054] Furthermore, as the road surface construction device 1 is towed, the surface treatment mixture M in the adjustment area S2 is sent out from the gap between the lower surface of the rear plate 20b and the road surface Z relatively to the road surface construction device 1, and is applied to the road surface Z by the brush unit 40b. In this manner, a layer of the surface treatment mixture M is formed on the road surface Z along which the road surface construction device 1 has moved. At this time, the brush unit 40b attached to the rear plate 20b slides on the surface treatment mixture M, so that the surface of the layer of the surface treatment mixture M is brush-finished. In addition, the auxiliary members 30c, 30d and the brush units 40c, 40d attached to the side plates 20c, 20d slide on the road surface Z, so that the surface treatment mixture M is prevented from protruding outward from the side of the main body unit 10. As a result, the width of the layer of the surface treatment mixture M is controlled to a uniform width equivalent to the distance between the auxiliary members 30c and 30d.

[0055] When towing the road surface construction device 1, it is preferable that the lower surfaces of the auxiliary members 30c, 30d are not parallel to the Z surface of the road surface. Specifically, it is preferable that the road surface construction device 1 is slightly inclined so that the lower surfaces of the auxiliary members 30c, 30d are separated from the road surface Z according to the traveling direction of the road surface construction device 1. In order to tow the road surface construction device 1 in a slightly inclined state, it is preferable to adjust the position of the center of gravity of the road surface construction device 1 in advance by adjusting the mounting position of the towing part 13 in the height direction or attaching a weight to the adjustment rod 15, although this is not particularly limited. By towing the road surface construction device 1 in a tilted state, the posture of the road surface construction device 1 can be stabilized and the road surface construction device 1 can be prevented from getting caught on unevenness on the road surface Z, making it possible to perform construction stably.

[0056] Finally, the surface treatment mixture M is cured and hardened to form a surface treatment layer on the road surface.

[0057] As described above, in the road surface construction device 1 of this embodiment, the brush parts 40a, 40b attached to the front plate 20a and the rear plate 20b deform to follow the convex parts of the road surface and can enter the concave parts such as ruts in the road surface, so that the surface treatment mixture can be appropriately applied to the inside of the concave parts of the road surface and can be applied to a uniform thickness (about 1 to 2 mm). In addition, since the brush parts 40a, 40b follow the uneven shape of the road surface, no gap is generated between the road surface construction device 1 and the road surface, so that the leakage of the surface treatment mixture to the outside of the road surface construction device 1 can be suppressed and the surface treatment mixture can be applied to a uniform thickness.

[0058] Furthermore, according to the road surface construction device 1 of this embodiment, a brush finish can be applied to the surface of the surface treatment mixture applied to the road surface by the brush unit 40b. This can improve the appearance of the layer made of the surface treatment mixture. In particular, if the brush finish is not applied, the finish of the start and end ends of the application will be poor. However, in this embodiment, by applying the brush finish, the finish of the start and end ends of the surface treatment mixture can be improved, and the appearance of the entire layer made of the surface treatment mixture can be made excellent.

[0059] Moreover, the road surface construction device 1 in this embodiment is equipped with brush parts 40c, 40d attached to the side plates 20c, 20d. With this, by towing the road surface construction device 1, the brush parts 40c, 40d slide on the road surface along the traveling direction of the road surface construction device 1, so that it is possible to prevent the surface treatment mixture from leaking outward from the side plates 20c, 20d. Therefore, it is possible to make the width of the layer made of the surface treatment mixture applied by the road surface construction device 1 uniform.

[0060] Moreover, the road surface construction device 1 in this embodiment is equipped with a partition plate 20e and a brush part 40e provided between the front plate 20a and the rear plate 20b. As a result, when the road surface construction device 1 is towed, the brush part 40e slides on the surface treatment mixture, so that the thickness of the surface treatment mixture in the width direction in the adjustment region S2 can be adjusted uniformly, and then the surface treatment mixture can be applied to the road surface by the brush part 40b of the rear plate 20b. Therefore, the thickness of the layer made of the surface treatment mixture can be made more uniform.

[0061] Moreover, the road surface construction device 1 in this embodiment is equipped with an auxiliary member 30 attached to the plate member 20, and the linear member 41 of the brush part 40 is sandwiched between the auxiliary member 30 and the plate member 20. This makes it possible to prevent the bundle of linear members 41 from spreading and including the surface treatment mixture when the road surface construction device 1 applies the surface treatment mixture, thereby preventing the surface treatment mixture from being applied to unintended locations on the road surface. This makes it possible to improve the surface finish of the layer made of the surface treatment mixture.

[0062] In addition, in the road surface construction device 1 of this embodiment, the lower ends of the auxiliary members 30c, 30d provided on the side plates 20c, 20d are located lower than the lower ends of the side plates 20c, 20d. That is, in the main body 10, the lower surfaces of the auxiliary members 30c, 30d are located at the lowest position, and when the road surface construction device 1 is placed on the road surface, the auxiliary members 30c, 30d come into contact with the road surface, and the entire road surface construction device 1 is supported by the auxiliary members 30c, 30d. Since the auxiliary members 30c, 30d extend in a direction parallel to the traveling direction when the road surface construction device 1 is towed, the auxiliary members 30c, 30d come into contact with the road surface, making it easier to tow the road surface construction device 1. In addition, when the road surface construction device 1 is towed, the auxiliary members 30c, 30d slide on the road surface, which makes it possible to better prevent the surface treatment mixture from leaking out from the sides of the main body 10, and makes the width of the layer of applied surface treatment mixture more uniform.

[0063] Moreover, the road surface construction device 1 in this embodiment is provided with protrusions 33c, 33d provided at one end of the auxiliary members 30c, 30d, respectively. This prevents the corners of the auxiliary members 30c, 30d from coming into contact with the road surface when the road surface construction device 1 is towed, making it easier to tow the road surface construction device 1 and preventing damage to the road surface from occurring.

[0064] Furthermore, the layer made of the surface treatment mixture formed by the road surface construction device 1 in this embodiment has an improved appearance due to brush finishing. Therefore, even when a portion that has already been constructed using the surface treatment mixture is repeatedly constructed, the overlapping portions of the layers made of the surface treatment mixture can have an excellent appearance.

[0065] The above-described embodiments are described to facilitate understanding of the present invention, and are not described to limit the present invention. Therefore, each element disclosed in the above embodiments is intended to include all design modifications and equivalents that fall within the technical scope of the present invention.

[0066] For example, in the above embodiment, the road surface construction device 1 is used to apply a surface treatment mixture containing a mortar material, but the use of the road surface construction device 1 is not particularly limited to this. The road surface construction device 1 can be widely used for the construction of substances that have a fluidity to the extent that they can be applied by the brush unit 40. [Explanation of symbols]

[0067] 1…Road surface construction equipment 10...Main body 11…Bottom opening 12...Top opening 13...Traction part 14…Tabletop 15...Adjustment rod 20…Plate member 20a…Front board 20b…Back board 20c, 20d...Side plate 21…Thickness adjustment section 30, 30a, 30b, 30c, 30d, 30e...Auxiliary members 31…Main body 32…Thickness adjustment section 33...Protrusion 40, 40a, 40b, 40c, 40d, 40e...Brush section 41...Linear member 42...Holding part 43…Connection 44…Through hole 50…Spacer 60…Volts S1…Placement area S2…adjustment area M: Surface treatment mixture Z…Road surface

Claims

1. A main body having a rectangular frame shape; A brush portion provided on the main body portion, The main body portion is Two first plate-shaped members arranged along a first direction; two second plate-like members arranged along a second direction intersecting the first plate-like member, The brush portion includes a plurality of linear members and a holder that holds the linear members. The linear member protrudes from a lower end of the main body, The brush section includes a first brush section provided on the first plate-shaped member.

2. 2. A road surface construction device according to claim 1, wherein the brush section includes a second brush section provided on the second plate-like member.

3. the main body portion includes a third plate-like member that is connected to the two second plate-like members and that is provided between the two first plate-like members and along the first direction, 3. A road surface construction device according to claim 1 or 2, wherein the brush section includes a third brush section provided on the third plate-like member.

4. the main body portion includes a first auxiliary member provided on the first plate-like member, 3. A road surface construction device according to claim 1 or 2, wherein the linear member of the first brush portion is sandwiched between the first plate-like member and the first auxiliary member.

5. the main body portion includes a second auxiliary member provided on the second plate-like member, 3. A road surface construction device according to claim 2, wherein the linear member of the second brush portion is sandwiched between the second plate-like member and the second auxiliary member.

6. the main body portion includes a third auxiliary member provided on the third plate-like member, 4. A road surface construction device according to claim 3, wherein the linear member of the third brush portion is sandwiched between the third plate-like member and the third auxiliary member.

7. 6. A road surface construction device according to claim 5, wherein a lower end of the second auxiliary member is located lower than a lower end of the second plate-shaped member in the vertical direction.

8. 6. The road surface construction device according to claim 5, wherein the second auxiliary member is provided with a plate-shaped protrusion protruding from an end portion in the longitudinal direction of the second auxiliary member.

9. 9. A road surface construction device according to claim 8, wherein the protrusion has a curved shape.

10. 3. A road surface construction device according to claim 1 or 2, wherein the length of the linear members protruding from the main body is 5 to 50 mm.

11. A road surface construction method using the road surface construction device according to claim 1 or 2, a preparation step of disposing a surface treatment mixture within the body; and a coating step of towing the road surface construction device and coating the surface treatment mixture onto a road surface.

12. A road surface construction method according to claim 11, The application step includes applying a brush finish to the surface of the surface treatment mixture using the brush unit.

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