JP2003082612A - Coating equipment and method for roadwork - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a weak point in which a liquid drip is generated during the execution of works in the vicinity of a discharge opening by the rule of fluid viscosity of conventional coating equipment and roadworks cannot be executed by one process, to surely form layer thickness imparting durability with time on the joining section of pavement while reducing the excess amount of coating on both sides of the joining section and to distribute the reduced portion to the impartment of the flatness of a road surface. SOLUTION: In coating equipment for roadworks, by which a fluid for roadworks is made to flow out through an opening section and the flow-out fluid is applied, the coating equipment is constituted so that the coating equipment is composed of a place C mutually connecting a heat-resisting blade, which has a grounding section and a section to be grounded and the angle to the ground is changed, and a fluid supply section, the distribution of the quantity of the fluid abutted or made to flow and collected and discharged to the blade is applied to each required object, and the impartment of flatness by a laying leveling can be executed simultaneously by one process.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating device and a coating method for road construction, and more specifically, repair and reinforcement of a joint portion and a fracture portion of a road surface of a paved road, and a gap portion with a structure,
Also, the present invention relates to a coating device used for a tack coat and a coating method.

[0002]

2. Description of the Related Art Conventionally, old and new paint joints on the road surface, fractures on the road surface, damage and scattering of joints that often occur during cold season pavement construction, and overcutter traces and structures associated with pipe burial work Tar treatment is applied to joints with objects for repair, reinforcement and leakage prevention.

As a general construction method for the construction section,
Straight asphalt (hereinafter referred to as tar) or semi-broth asphalt (hereinafter also referred to as tar) that has been heated and melted with a burner, etc., and road construction materials such as tar and asphalt emulsion containing elastomer and tar are filled into a ladle or a can for road surface construction. It was sprinkled on the part and spread with a deck brush or the like.

As a device for coating or sealing the road surface, Japanese Patent Laid-Open No. 3-96520 and Japanese Patent Laid-Open No. 9-16819, which use road surface line markers, have been proposed, but have not been widely used yet. Its weakness is that
In the former case, the mixed tar material is not widely distributed in the market and the mixed tar adhered and solidified to the brush after use becomes an obstacle during use again, so there is a difficulty in maintenance and the coating thickness distribution at desired points on the road surface. It is difficult to apply selectively. In the latter case, the total weight of the equipment is 50 kg or more even if it is small, so it is not general because it requires a vehicle with a power gate that line operators regularly use.In addition, since side plates that regulate the road surface height, that is, layer thickness are used, tar It is effective when the kinematic viscosity is high, but on the contrary, the high kinematic viscosity lowers the tar supply from the discharge port, and therefore lowers the work efficiency. Further, if the kinematic viscosity of the tar is lowered, that is, the fluidity is increased to increase the work efficiency, the side plate becomes ineffective against the layer thickness, and on a sloping ground, a severe road surface drop phenomenon occurs, resulting in poor construction. Furthermore, it is impossible to specify the desired position and apply the layer thickness.

Further, conventionally, when a pavement is replaced by cutting a road surface with a long-distance cutter, a tar treatment is manually performed on the entire boundary line between the old and new joints after the completion of the pavement. The effect of this tar is to prevent water leakage in the first year, but after the next year, especially in the winter and before and after that, the joint part is dissociated, and the water leakage phenomenon frequently occurs along the joint part (hereinafter also referred to as the joint). To do. This is because the distribution of the amount of applied tar varies when viewed along the joint. That is, there is a part where the pavement contracts due to a decrease in temperature or the subsidence of the support roadbed due to rolling pressure or water leakage of the traveling vehicle is particularly large at the joint portion, and the amount of the applied tar happens to vary at this part. Therefore, if it is small, the contraction of the pavement or the subsidence of the roadbed cannot be followed and the joint portion is separated.

[0006] When a cross section is taken at right angles to the extension direction of the diverging portion and observed, it is clearly found that the amount of tar is insufficient on the joint. However, it was also found that the total amount of cross-section tar was 70% or more of the normal portion even on average. It is clear that this shows the limit of the conventional technique of letting the average flow out of the device as well as the manual work.
There has been a long-awaited new technology that can provide durability over time.

Further, as disclosed in Japanese Patent Application No. 2000-019977, a technique for improving the falling nozzle to specify and increase the thickness of the tar layer directly above the joint has been proposed, and this technique satisfied the durability over the years. For the purpose of tar construction, which is to prevent water leakage and to prevent peeling and scattering of pavement aggregate on both sides of the joint, there is a drawback that the latter coating amount becomes excessive. This is due to the physical properties of tar. That is, when the downflow nozzle is squeezed to satisfy the layer thickness, the tar does not flow down but crawls down the bottom wall from the nozzle to become a turbulent flow, that is, liquid drop due to the principle of tension, and a continuous coating shape cannot be obtained. In addition, when a certain amount of continuous downflow physically follows the irregularities of the road surface, it is inevitable that the rolling stress of the passing vehicle will concentrate on the convex portion and lead to destruction. It was not possible to reduce vibration pollution due to bouncing caused by unevenness. The development of a new device that gives flatness to the road surface and satisfies the layer thickness just above the joint while simultaneously satisfying the sealing properties on both sides has been awaited.

[0008]

DISCLOSURE OF THE INVENTION The object of the present invention is to compare the line width and layer thickness distribution of tar applied in one step of one device on a paved road surface directly above the joint as compared with the conventional device. It is an object of the present invention to provide a novel coating device capable of reliably forming a layer thickness, reducing the amount of tar sealing on both sides of a joint to a necessary minimum, and simultaneously imparting flatness by tar.

Furthermore, the weaknesses of the conventional device, which causes turbulence near the discharge port or the downflow nozzle and causes defective construction regardless of whether the physical properties of the road construction fluid are heated or at room temperature, are evolved so as to cope with any turbulence. In addition, we provide a new coating device that enables the weaknesses of conventional manual construction, which is apparently satisfying but does not have substantial durability over time, to be carried out by a single device for each construction purpose of the road surface. It is to be. Furthermore, it is to be rewritable as a new model by allowing it to be mounted on a conventional coating device.

Furthermore, another object of the present invention is to provide a coating apparatus capable of quickly and flatly providing a tack coat when the overlay is applied due to the subsidence of the roadbed, the deterioration of the road surface, or the raising of the road. In addition, a smooth coating surface with the projection as the apex of the conventional coating surface, which was formed following the road surface projection, is provided to reduce the impact resistance to the vehicle and the vibration pollution due to the passage of the vehicle. Is.

[0011]

Therefore, a road construction coating apparatus according to the present invention is a road construction coating apparatus for flowing a road construction fluid onto a road surface to apply it in a strip shape, and has a grounded portion and a non-grounded portion. It has a heat resistant elastic blade.
Also, having a plurality of blades, adjacent blades are connected by a hinge mechanism that can change the plane angle formed by each other,
The fluid coating line width is adjustable. Further, it has a plurality of blades, and by changing the angle of the blades, all the grounding blades are formed. Also, the blade is a cylindrical type,
One or more cuts were formed on the lower end surface to make a non-grounded portion.
A blade was attached to the lower surface of the plate, and a movable fluid flow distribution plate was provided on the plate. Then, in the coating method according to the present invention, the flatness of the road surface is obtained by spreading the fluid by the blade that is elastically deformable and can come into contact with the road surface.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail based on the illustrated embodiments. In the first embodiment shown in FIGS. 1 and 2 showing a perspective view of a main part of FIG. 3 and a perspective view of a blade unit A, a road construction coating apparatus according to the present invention is a fluid for road construction. Is discharged to the road surface through a discharge port or a downflow nozzle provided in the dissolving tank or the receiving tank 27, and the fluid is selected by the blades 1 and 3 having a grounded portion and a non-grounded portion 2a continuous to the grounded portion and the line width for each purpose. It is a coating device for road construction that applies a belt-shaped coating in one step by advancing the device to a specific layer thickness and flatness.

Each of the blades 1 and 3 has a pair of flat inclined side ground contact portions in the advancing direction of the apparatus and a cut 2 continuous to the ground contact portion, and further has a pair of ground contact portions substantially parallel to the advancing direction of the apparatus. The grounding portion of the blade 1 regulates the layer thickness on both sides of the joint and imparts flatness, and the fluid discharge portion (non-grounding portion) 2a formed in the grounded state by the cut 2 is the layer thickness immediately above the joint due to the ground pressure. And the pair of blades 3 and 3 regulate the line width.

The blades 1 and 1 are made of heat resistant elastic material and form an edge toward the rear in the traveling direction of the coating apparatus. The blades 3 and 3 are also heat resistant elastic bodies and form edges that regulate the line width. The cut (non-grounded portion) 2 is for multiple purposes and is located in the middle of the blades 1 and 1 so as to form a ground space by the notch or butting of the blades 1 and 1 and the lower end of the fixed body and, if necessary, a regulation plate, 2a of FIG. 2 depending on the weight of the device mainly composed of 27 or the ground pressure of the fixed lever.
As shown in (4), it opens and closes according to the purpose of use and is closed for tack coat.

The blades 1 and 3 are composed of a heat-resistant elastic body and fixing members 9A, 9B, 10A and 10B for supporting the same, and the fixing members 9A, 9B, 10A and 10B have a space and a prescribed line width. It has a bilaterally symmetric hinge mechanism and can be opened and closed with variable angles, and the plate C is made up of bolt shafts and screws 11, 12, 13 etc.
The line width is selected as large or small depending on each fixed position.
Further, this opening / closing can be automated by one or more opening / closing levers.

The plate C has through holes 14, 15 and 16 for fixing the blade unit A to desired widths by using screw bodies 11, 12, and 13 such as nuts according to the target line width. To form an inner space corresponding to the shape. The plate C is detachably connected to the bottom surface of the receiving tank 27 which is a fluid storage tank. As a means for connecting, the ground pressure from the receiving tank 27 is smoothly transmitted by inserting the connecting portion 22 into the collar portion 23 extending from the bottom side surface of the receiving tank 27 and fixing it with the fixing screw 21. Further, the plates C may be connected by using hooks, which is effective when the line marker is diverted or when it is attached to another falling-flow type coating apparatus. Also, the bottom surface of the receiving tank 27 that stores the fluid and the fixing members 9A, 9B, 10A, 10
It is possible to directly connect B, but it is necessary to remove or roll over the receiving tank 27 at the time of maintenance, and if fluid remains in the receiving tank 27, the risk of contamination and handling increases. Further, a plurality of plates C may be provided and rotated between them. In this case, the curved portion can be provided without damaging the ground blade in conjunction with the opening and closing of the receiving tank 27 to the left and right.

As the heat resistant elastic body for the blades 1 and 3, there are silicon rubber and fluororubber. In the present invention, when obtaining the angle to ground by elasticity, silicon rubber is used to obtain higher fluid temperature, wear resistance and rigidity. Fluorine rubber was used for the required tack coat. Also, the ground angle is fixed by the fixing member 9.
By connecting springs inside and outside A, 9B, 10A, 10B, it is possible to cope with a heat-resistant elastic body having higher rigidity.

A pair of blades 1, 1 forming a V-shaped rearward sloping side in a plan view spread out in a fan shape via a central hinge portion 5, and fluid discharged from a discharge nozzle (not shown) to the road surface. At the same time as the application right under the ground contact portion, the flatness on the road surface unevenness is applied, and the fluid is collected along the blades 1, 1 to the rear central portion. The collected fluid flows out from the non-grounded portion 2a of the blade onto the joint to form a layer thickness having durability over time and solidify.

For the blades 1 and 3, the heat resistant elastic body expands and contracts within a range of an effective angle of 90 ° depending on the magnitude of the ground pressure, and the elastic property of the spring allows the effective angle of the fixed body to be 90 °. Although it is possible to obtain a range, it is reasonable to fix the blades 1 and 3 to obtain this ground pressure by using the plate C connected to the receiving tank 27 together with the ease of maintenance when repeatedly used. It's known.

Further, when the fluid is directly discharged from the dissolution tank to the road surface without passing through the receiving tank 27, the plate C and the blades 1 and 3 are fixed by an arm corresponding to the current condition of the road surface connected to the main body of the coating apparatus. Well, the ground pressure may be any means as long as the desired fluid distribution can be obtained by the hand lever or weight connected to the plate C or a combination thereof. The nozzle that directly flows from the melting tank to the road surface is shown in Fig. 10 and
11, handle of valve 63 (adjustment lever) 62
The line width can be freely selected in the traveling direction by rotating the discharge port (nozzle) 61 within the range of 90 ° with the force point as the force point, and the hinge mechanism selects the fluid falling width in conjunction with the blade width. Be free.

The relationship between the contact pressure of the blades 1 and 3 and the angle has a correlation with the kinematic viscosity of the tar. In the cold season, the viscosity of the tar after landing increases rapidly, and when the contact pressure of the blades 1 and 3 is small, it becomes a layer. Not only does the corrugation phenomenon occur in the thickness, but also the amount of tar placed on the joint becomes extremely uneven, and it becomes difficult to obtain an accurate line width. For adjusting the ground pressure, it is possible to obtain a good construction shape by advancing the device while visually observing the fluid viscosity and the fluid condition from the space 25 of the plate C.

The means for selecting the line width is determined by the horizontal displacement of the blades 1, 1 in the advancing direction. The inner angle is determined by the position where the bolt shaft portion of the hinge portion 5 inserted from the through hole 15 of the plate C is fixed by the screw body (nut) 12, and the bottom side between the hinge portions 4 and 6 with the hinge portion 5 as the apex is a line. Width. or,
The cut 2 of the blade 1 is closed at a position where the apex and the bottom coincide with each other in the front-rear direction to form a straight line, which enables a uniform tack coat. Further, by opening the locking tacks 7 and 8 of the blade 3, a wide tack coat is possible, and when only one is released, the other draws a coating line and the periphery of the overlay can be clearly coated.

In the application of tar applied across a slope,
When the melting temperature of tar exceeds 100 ° C, the kinematic viscosity becomes particularly low. Therefore, in the fixed nozzle, liquid dripping from the blade 3 due to unevenness of the road surface or impossibility of imparting the layer thickness of the non-grounded portion 2a and road liquid dripping Frequently occurs, resulting in poor construction. As a means to cope with this, a movable distribution plate 20 is provided on the plate, and the tar is made to flow down from the vicinity of the blade 3 above the sloping ground to lengthen the residence time on the road surface, thereby lowering the temperature, that is, increasing the kinematic viscosity to drool the liquid. Can be prevented. or,
The rotatable nozzle 61 shown in FIGS. 10 and 11 may be moved above the slope and the valve 63 may be opened / closed arbitrarily to extend the residence time on the road surface and to perform the cooling work. Further, the shape of the movable distribution plate 20 may have a shape of a chute with a tip corresponding to a desired line width when the line marker is diverted.

Since the heat-resistant elastic bodies of the blades 1 and 3 during construction are always on the fluid on the road surface, they do not wear violently due to the lubricating action of the fluid, but in order to maintain the smoothness of the construction surface, they must be kept at a certain angle. It is desirable to wear the edges on average. Heat-resistant rubber is suitable as the material of the heat-resistant elastic body, but it has a problem in maintenance due to adhesion of road dust, but it is a flock of glass fiber, carbon fiber, steel fiber, etc. coated with fluororesin (PTFE, etc.). The mesh and mesh are also effective for high temperature fluids.

When a flammable material is used for the blades 1 and 3, a burner for heating the receiving tank 26 for obtaining an optimum kinematic viscosity 26
The rapid heat flow of the blades 1 and 3 inevitably causes rapid deterioration or burnout of the blades 1. In the present invention, a heat shield is provided below the plate C.
28, a heat shield 29 is provided on the upper side.

The distribution of the line width and layer thickness of the fluid and the imparting of flatness of the coating device for road construction according to the present invention will be described in more detail with reference to the drawings.

As shown in FIG. 2, when the blade unit A receives a pressing force from above and is pressed against the road surface (ground for construction work), the cut 2 between the blades 1 and 1 is widened and the The grounding portion (fluid discharging portion) 2a is formed. In other words, the pressing force in the vertically downward direction is applied to the blades 1, 1 from the plate C of FIG. 3, and the blades 1, 1 are curved.
The slit 2 becomes an expanded shape due to a change in angle, and the slit portion becomes the non-grounded portion (fluid discharge portion) 2a.

1 to 3, the four blades 1,
A blade-shaped blade fixing portion 9A, 9B, 10A made of metal having the same shape and having a house shape or a sword shape (a shape with the base of a pentagon removed) in plan view. , 10B, the upper half portions (upper edge portions) of the blades 1 and 3 are fixed.

Specifically, the pair of left and right fixing members 9A and 10A forming the inclined side are pivotally connected to each other by a vertical axis as the hinge portion 5 so that their mutual angles can be changed, and as the hinge portion 5. The upper end of the vertical shaft is a bolt shaft. Further, between the fixing members 9A and 9B, and between the fixing members 10A and 10B.
Between B, the vertical shafts serving as the hinge portions 4 and 6 are pivotally connected so that the mutual angles can be changed, and the upper ends of the vertical shafts serving as the hinge portions 4 and 6 are bolt shaft portions. Also,
At the front ends of the upper edges of the fixing portions 9B and 10B that are substantially parallel to each other,
Locking studs 7 and 8 having a locking head at the upper end are projected.

On the other hand, the plate C is provided with a through hole (long hole) 15 in the front-rear direction at the rear center, and through holes (long holes) 14 in the left and right directions are formed on the left and right sides in front of it. The hinge portions 5, 14 and 16 are provided in the through holes 15, 14, 16 respectively.
The bolt shaft portions 4 and 6 are inserted from below, and female screw bodies 12, 11 and 13 such as a wing nut and a nut with a rotating rod are screwed to the plate C, and the blade unit A--blade 1 , 3 --- shape of the unit A
To fix.

At a position further forward of the plate C,
F-shaped and E-shaped guide grooves 17 and 18 are provided so that the locking studs 7 and 8 can be slid and guided into the guide grooves 17 and 18 from a large-diameter hole portion 24 having a larger diameter than the head thereof. Then, it is inserted and assembled. Further, the plate C is a joint portion between the flange portion 23 extending outward from the bottom surface of the receiving tank 27 that stores the fluid and the both sides of the plate.
22 is fitted and connected, and the forward and backward movement is prevented by the fixing screw 21. The fixing and connection of the blade may take any form as long as it is stable as the device advances.

Next, the application form of the fluid will be described in detail by taking molten tar as an example. The molten tar is dropped inside the blade unit A from a bottom nozzle (not shown) of the receiving tank 27 in a strip shape in the line width direction. Immediately advancing the coating device along the joint extension toward the landed tar, the tar comes into contact with the grounding portions of the blades 1, 1 while the line width is regulated by the grounding portions of the pair of left and right blades 3, 3 and the blade 1 , 1,
By restricting the ground pressure of 3 and 3, both sides of the joint are sealed (applied) with a thickness several times thinner than the conventional one, and flatness is imparted. The tars are regulated by the ground pressure of the grounding portions of the blades 3,1 so that the blades 3,1 become a dam, and the molten tar surely coats both sides of the joint without causing uneven coating, and the non-grounding portion along the inner wall of the blades. (Fluid discharge portion) 2a Collects and thickly flows out from the space portion onto the joint to be solidified, so that durability over time is surely imparted. This eliminates the conventional uncertainty due to dripping near the nozzle. The temperature of the tar flowing out from the non-grounded portion (fluid discharge portion) 2a is rapidly cooled while collecting from both sides, but the distance between the nozzle and the blade can be adjusted by adjusting the front and rear locking (fixed) position of the plate. A stable layer thickness on the joint can be obtained by decreasing the temperature in the cold season and increasing it in the warm season. Further, if water droplets or fine sand is sprayed on the joint immediately after coating, the tar can be hardened more effectively and the pollution caused by adhesion to a traffic vehicle can be prevented.

Preheating and heat retention of the receiving tank 27 are especially necessary in the cold season in order to ensure an appropriate kinematic viscosity of the tar,
This is done by the small gas burner 26. The effective heat flow of the burner 26 is usually 500 ° C or more at the end of the receiving tank, and flammable materials cannot be installed in the flame passage. In the present invention, since the material of the blades 1 and 3 is preferably a combustible material, it is necessary to newly control the heat flow. In order to solve this contradiction, in the present invention, in the preheating, the plate C is used.
By pre-heating the whole surface before mounting due to its detachability, and by using the heat shields (plate materials) 28 and 29 after mounting, it is possible to collect the amount of heat that was previously dissipated outside the receiving tank surface and wasted. It has become possible to make the total amount of heat equal or higher. Further, the heat flow is dispersed by the heat radiation holes to prevent overheating.

According to the present invention, the selection of the coating thickness distribution in the conventional manual fluid coating can be made impossible in one step, and
Since the conventional coating device adopts a means for dropping the fluid from the nozzle or the discharge port to the road surface, particularly when the fluid is tar, there are many construction defects due to liquid dripping. It is intended to provide a novel coating device which can cope with flowing and drooling and can obtain a good construction result in one step. FIG. 4 is a cross-sectional view of a portion where the conventional coating device causes turbulent flow due to liquid drop at the nozzle outlet. Here the dashed line
The coating layer distribution shown by 32 is a normal distribution, but it was found that 30 is a normal layer thickness, 32 is an insufficient layer thickness of tar amount, and 34 is missing (has a coating defect part 34) It is defective. FIG. 5 is a cross section of a construction site using the blade of the present invention. Here, a clear difference can be seen from the cross section of FIG. That is, the normal part (falling coating layer thickness) of FIG.
When comparing the coating layer thickness 31 of the blade according to the present invention in FIG. 5, it is found that the amount of tar used is ½ or less. This indicates that the main purpose of the tar construction on both sides of the joint is to provide sufficient sealing properties to prevent the peeling and scattering of the pavement aggregate. This indicates the limit of control of the molten tar physical properties in the conventional coating apparatus, and proves that half or more of the tar was wasted. Furthermore, the sealability on the joint 40 that maintains the aging durability, which is the main object of the present invention, is clear in the comparison between the insufficient layer thickness 32 and the layer thickness 33 of the present invention shown by the conventional broken line, and It is possible to reliably apply the tar amount over the entire coating line, which corresponds to the divergence and the generated step difference from the initial stage and which can be aged for a long time. Furthermore, the code
In the comparison between 34 and 35, the missing points clearly disappeared.

Next, in the enforcement at the crossing part of the slope,
Construction by the conventional coating apparatus is shown in FIG. 6, and construction by the coating apparatus of the present invention is shown in FIG. The physical property of a fluid, that is, molten tar, after landing on a sloping ground is to flow down. Since the conventional coating device discharges a fixed width and a fixed amount, after the landing, the line width limit 44 is exceeded and the liquid drop portion 43 occurs, and the layer thickness imparting portion 41 is formed below the normal position indicated by the broken line. The waterproofness over the years cannot be achieved. In the coating apparatus of the present invention, FIG.
Since the movable distribution plate 20 of FIG. 7 concentrates and lands the tar upstream of the line width to bring the tar down into contact with the blades 1 and 3 while the natural flow of tar is within the line width limit 44, the coating molding is performed as shown in FIG. The sagging is prevented and the layer thickness imparting portion 42 is accurately formed, so that the waterproof property over the years is achieved.

Next, the imparting of flatness to the road surface by the coating apparatus of the present invention will be described. FIG. 8 is a cross-sectional view of a construction extension line of a fixed amount discharge construction by a conventional coating device. The joints of the old and new pavements are laid evenly around 100 ° C, and then the surface is prepared by rolling with rollers or plate compactors, but the joints are rapidly cooled and solidified in the cold season. 52 will occur. This waving phenomenon causes cracking and peeling due to rolling caused by rolling compaction impact and twisting of a passing vehicle, and leaking water from the crack causes damage to the turtle shell and potholes, and eventually to the destruction of the exposed roadbed hole. Become. The coating layer 51 in FIG. 8 shows that a fixed amount discharge construction was performed by the conventional coating device on top of the waving phenomenon, and it is found that the impact resistance from a passing vehicle is not improved. FIG. 9 is a cross-sectional view of a construction extension line for construction using the blades 1 and 3 of the present invention. Here, it can be seen that the road surface of the coating layer 53 made of tar maintains smooth flatness. It shows that the unevenness of the road surface is eliminated and the durability against a pavement caused by water leakage is newly added to other than the joint.

As described above, the construction coating apparatus according to the present invention includes the heat resistant elastic blades 1 and 3 having the grounded portion and the non-grounded portion 2a. Then, the plurality of blades 3, 1, 1, 3 are connected to adjacent blades (3 and 1, 1
And 1, 3 and 3) are connected to each other through a hinge mechanism capable of changing the plane angle of the fluid, and the width of the fluid application line is adjustable. It should be noted that in the present invention, changing the plane angle may be referred to as "bending". That is, in FIG. 3, FIG. 1 and FIG.
The coating line width can be adjusted by changing (changing) the plane angle formed by (1, 3, 3) and (3) and changing the interval between the left and right parallel blades 3, 3. Further, if the plane angle formed by the other adjacent blades 1 and 1 is about 180 °,
The cut 2 is elastically closed (closed) to form an all-ground blade, and a uniform tack coat is possible.

Further, the coating method according to the present invention is a method for obtaining the flatness of the road surface by spreading the fluid by the blades 1 and 3 which can contact (contact) while elastically deforming the road surface. In this method, the fluid is discharged linearly from the non-grounded portion 2a in a linear manner to locally increase the layer thickness along the joint 40 as shown in FIGS.

Next, FIGS. 12 to 15 show a second embodiment of the present invention. That is, the blade 1A has a cylindrical shape, and one or more cuts are formed on the lower end surface to form the non-grounded portion 2a. For example, a belt-shaped blade is wound 360 ° between the inner short cylindrical body 64 and the outer peripheral tubular body 65, and is held by being sandwiched as a cylindrical shape. At the lower end of the cylindrical heat resistant elastic body, 1
It is also preferable to form slit-like notches at one or more places to form the non-grounded portion 2a. A dolly 68 having wheels 66 and a handle 67 is provided with a melting tank 69 integrally (or separately mounted) with the dolly 68, and a gas cylinder
70 and a fluid melted by a heat source such as a burner (not shown) are kept in the melting tank 69, and a discharge pipe 73 is passed through a valve 72 which is opened and closed by a lever 71, and a receiving tank 27 as a sub tank.
Store in once. The receiving tank 27 and the dolly 68 are detachably connected to each other through the arms 74 and 75 and the removable pins 76, and the receiving wheels 27 are provided with small wheels 77.
When 67 is gripped and pushed by the hand to move the carriage 68, the receiving tank (sub-tank) 27 also moves together.

A discharge pipe 78 ──shown diagrammatically in FIG. 13 is connected to the bottom wall of the receiving tank 27, and a first valve 79 and a second valve 80 are provided at the end or in the middle of the discharge pipe 78. Is provided. The first valve 79 is opened and closed by a detection arm 81, and the base end of the detection arm 81 is a valve body (valve body).
A grounding wheel 82 (or a grounding sliding contact member not shown) is attached to the tip of the grounding wheel 82 so that the receiving tank 27 approaches the road surface and the grounding wheel 82 (or the sliding contact member) contacts the road surface at the same time. Then, by swinging the detection arm 81 upward, the first valve 79 is opened. The second valve 80 is opened and closed by a manual operation lever 83. That is, the first valve 79 and the second valve
Only when both of the valves 80 are open does the fluid flow down and flow into the lower cylindrical blade 1A. Also 84
Is a mounting member, which is fixed to the upper ends of the inner and outer cylindrical bodies 64 and 65 by welding or the like, and the mounting member 84 is hooked to the mounted portions 85 and 85 of the bottom wall of the receiving tank 27, or not shown. It can be attached with bolts or other fixing means. Further, the cylindrical elastic blade 1A is detachably and replaceably attached by a fixing tool 86 such as a butterfly bolt. This facilitates replacement. Further, when the pin 76 is pulled out, the receiving tank 27 can be separated from the dolly 68 as a sub tank, which is convenient for performing the coating work in a small turn.

FIG. 15 is a schematic diagram for explaining the cylindrical blade 1A in a plan view. Even if the cylindrical blade 1A is moved in any of the directions F ₁ , F ₂ , F ₃ , the coating line widths W ₁ , W ₂ , W ₃ is always constant (that is, substantially equal to the outer diameter dimension D). Therefore,
Even if cracks or cracks on the road surface are complicatedly branched or bent, the application line width W ₁ , W ₂ , W ₃ can be kept constant and applied freely along the complicated shape. You can

In the embodiments of FIGS. 12 and 13, if the first valve 79 and the second valve 80 are provided in two independent flow paths, respectively, and one of them is opened, It is also free to let the fluid flow into the lower cylindrical blade 1A (not shown). In addition, the above-mentioned first valve 79 in series
And the second valve 80 (see FIG. 13) or the flow path configuration of the first valve 79 and the second valve 80 arranged in parallel is applied to the blades 1 and 3 as shown in FIG. It is also preferable.

[0043]

[Example] Outside temperature 7 ° C Road surface temperature 5 ° C, molten tar 110 ° C
Under these conditions, two examples of a flat road surface of 100 m and a sloped road surface (inclination angle of 10 °) of 6 m were constructed using the blade of the present invention with the tar wire width adjusted to 5 cm. As a comparative example, the conventional construction method with the blade and the plate removed was applied under the same conditions.

(Example 1 of flat road surface) While the heating cartrich (not shown) filled with tar was heated, the receiving tank 27 was preheated as shown in FIG. Next, the plate C with the blade unit A attached was attached to the bottom of the preheated receiving tank 27, and after confirming that the heating flow was changed by the heat shields 28 and 29, the receiving tank 27 was changed from Cartrich. Molten tar was poured and kept warm.

Next, the receiving tank support lever was operated to land the blade. The blade changes from the state in which the cut 2 in FIG. 1 is closed to the state in which 2a in FIG. 2 is open (the state in which the non-grounded portion 2a is formed), and the blade 1 and the blade 3 are each bent outward and supported. By increasing / decreasing the grounding pressure of the lever, the grounding angle can be freely adjusted, and the corners of the blade 1 and the blade 3 are elastically expanded and contracted into a substantially elliptical shape. Next, the nozzle was released and the apparatus was moved forward to complete the coating work. The construction surface was flat and the surface just above the joint was extremely smooth.

(Example 2 of inclined road surface) The movable distribution plate 20 was operated below the nozzle under the inclined road surface by operating the lever 19 so that the molten tar could be concentrated and flowed down above the inclined road surface. While the nozzle is opened and the state in which the tar flows down the road surface is visually observed in the space 25, the tar is brought into contact with the blade before reaching the lower side of the line width, and the device is advanced to advance the line width as in the conventional case. The tar was applied smoothly without dripping outside, and the small step 45 (see FIG. 7) was eliminated.

The construction cross section of the above-mentioned (Example 1) (Example 2) was cut at a depth of 5 cm using an asphalt cutter. This section is shown schematically in FIG. 5 for a flat road surface and in FIG. 7 for an inclined road surface. As a comparative example, a cross section of a defective construction site due to dripping of the conventional construction method is also schematically shown in FIG.
FIG. 6 shows the slope road surface. 4 and 5, the distribution of tar on the joint 40 of the old and new pavement shows that the normal value shown by the broken line in FIG. FIG. 5 of the present invention clearly shows that the coating amount satisfies the desired distribution and that durability over time is imparted.
In FIGS. 6 and 7, the distribution of tar on the old and new joints 40 shows that the normal value indicated by the broken line in FIG. 6 largely deviates to the lower side of the slope and durability over the years cannot be imparted. Shows that a small amount of downward tar distribution is imparted, but durability over the years is imparted.

Next, on both sides of the joint, as shown in FIG.
When the layer thicknesses of 30 and 31 in FIG. 5 are compared and verified, 30 shows the thinness limit layer thickness of the downflow construction with the nozzle narrowed,
In the case of 31, the thinness of the ground blade was the limit layer thickness. The difference was 2: 1 or less, and it was found that this reduction amount was distributed to maintain the flatness of the recess.

Next, in the comparison of flatness, in 36 of FIG. 4, tar is applied following the concave portion of the road surface, and flatness is not obtained. In 37 of FIG. 5 using the blade of the present invention, the recess is clearly filled with tar and sufficient flatness is obtained.

Next, the defect portion 34 caused by the dripping of the conventional coating device frequently occurred over the whole line, but in the construction using the blade of the present invention, the entire line is smoothly applied as shown by the flat portion 35. . There are 2 defects in the conventional method
Although it was supplemented with a degree coating, unevenness was conspicuous and adhesion pollution was expected in the summer.

On the inclined road surface, as shown by the liquid drop portion 43 in FIG. 6, the planned line width limit 44 is largely exceeded and the inclined road surface flows down, resulting in poor construction. Although it seems that the conventional method of coating on the crossing portion of a steep slope can be solved by lowering the melting temperature and increasing the kinematic viscosity, in reality, clogging of nozzles and drop shape defects due to drooling occur frequently and it becomes impossible to perform construction. In the present invention, the liquid distribution is controlled by the movable distribution plate 20 shown in FIG. 3 and the downward flow is regulated by the grounding blade to control the liquid drop as shown in FIG.

In applying tar to the crossing portion of the sloped road, even if the conventional method is aimed at providing the layer thickness on the joint 40, it is not possible to apply the layer thickness accurately according to the law of fluid as long as the falling flow means is adopted. However, depending on the viscosity, it may promote drooling. This can be seen from the fact that the desired shape shown by the broken line in FIG. 6 is largely collapsed and is displaced downward on the slope and promotes drooling. The thickening portion 42 of FIG. 7 using the blade and the movable distribution plate of the present invention is gradually cooled while landing by the movable distribution plate 20 and then flowing down, and is shaped by the non-grounded portion 2a so that it is directly above the joint 40. With this, the thickness can be reliably increased and durability over the years can be imparted, and a good construction shape can be obtained without causing unevenness or steps and dripping.

The flatness imparted by the blade was measured and verified in the cross section of the coating line width in FIGS. 5 and 7, and the cross section in the coating line extension direction is schematically shown in FIGS. 8 and 9. In FIG. 8, in the conventional coating apparatus, the tar 51 that has flown from the nozzle at a constant flow rate on the uneven road surface 52 is forced to follow the unevenness of the road surface, so that the unevenness and the step are eliminated. Not not. In the coating apparatus using the blade of the present invention, as shown in FIG. 9, the concave portion is filled with tar 53 with the convex portion on which the blades 1 and 3 contact the uneven road surface 52 as the apex, and the surface, that is, the road surface is flattened. It was verified that it was finished.

The new construction method using the coating device for road construction according to the present invention is effective in repairing and reinforcing cracks, irregularities, and small steps on the existing and old pavement joints.

First, in the new construction method using the road construction coating apparatus of the present invention, by using the grounding blades 1, 3, 1A, the coating shape can be surely dealt with in response to the dripping of the fluid flowing out from the fluid storage section. It has an effect not available with conventional equipment that can be implemented with a single construction. Furthermore, since the blades 1 and 3 can be opened and closed to the ground, the layer thickness distribution of the fluid to be applied can be freely controlled, resulting in a material saving effect. The hinge mechanism allows the blades 1 and 3 to be bent to the left and right. By being able to control, there is an effect of certainty of selection by purpose, which is superior to the conventional one, in which large and small surface coating or linear filling targets can be grasped and confirmed visually.

Since the conventional coating device has a means for discharging only a fixed amount of fluid, a fixed amount was applied following the unevenness of the road surface, and unevenness and small steps were not eliminated. In the present invention, by using the blade, despite the use of the same amount of coating material as the conventional one, the distribution can be distributed to the filling of the road surface recessed portion, and the purpose is to prevent the desired water leakage, splashing and separation. Not only will it be achieved, but a new effect will be obtained that will make it possible to impart road flatness.

Next, by using a plate that can be easily attached and detached, there is a great effect of converting the conventional defective coating apparatus to a high-performance coating apparatus, and the economical effect thereof cannot be overlooked. Further, by using the space portion of the plate, the fluid can be adjusted and discharged directly from the melting tank to the road surface through the rotary nozzle, so that the effect of simplifying the coating tank is not newly generated. The reliability is also particularly improved compared to the conventional one.

With the tack coat, the blade of the present invention has the effect of completely preventing the occurrence of breathing due to overspraying as in the conventional case, and the coating material is halved.
The saving effect had a remarkable effect.

[0059]

The present invention has the following significant effects with the above-mentioned configuration. It is easy (according to claim 1) to apply a large layer thickness on the road surface joint 40. In other words, the coating amount can be distributed according to the intended purpose, and the coating work can be performed without generating a lacking portion or a shifted portion. As a whole, it can sufficiently cope with repairs and reinforcements such as cracks, irregularities and small steps on the old and new pavement joints. (According to claim 2) to prevent wasteful use of fluid,
The line width can be adjusted to the appropriate line width. (According to claim 3) The blades 1 and 3 can be easily switched from the state of FIG. 5 to the state of FIG. That is, a uniform tack coat can be performed by an easy switching operation.

(According to the fourth aspect) As shown in FIG. 15, the line widths W ₁ , W ₂ and W ₃ are always stable and constant regardless of the moving direction. Therefore, there is an advantage that the coating can be always applied while maintaining a constant width along a complicatedly bent crack or crevice. (According to claim 5, liquid drop can be effectively prevented. (According to claim 6) The coating operation can be efficiently performed with a uniform layer thickness, regardless of the road surface conditions of various variations.

[Brief description of drawings]

FIG. 1 is a perspective view showing a blade used in a first embodiment of a road construction coating layer according to the present invention.

FIG. 2 is a perspective view showing a state in which the blade shown in FIG. 1 is subjected to a ground pressure and a non-grounded portion appears.

FIG. 3 is a main part perspective view showing an example of a plate connecting a blade and a receiving tank.

FIG. 4 is a cross-sectional view showing a tar application state in a conventional method.

FIG. 5 is a cross-sectional view showing a tar application state of the blade method of the present invention.

FIG. 6 is a cross-sectional view showing a state in which tar is applied to a crossing portion of a sloped road surface by a conventional method.

FIG. 7 is a cross-sectional view showing a coating state of the present blade construction method on a crossing portion of a sloped road surface.

FIG. 8 is a vertical cross-sectional view showing a tar application state in the conventional method in which road surface flatness is lacking.

FIG. 9 is a vertical cross-sectional view showing a tar-coated state for imparting road surface flatness of the present invention.

FIG. 10 is a perspective view showing an example of a nozzle that discharges a fluid from a melting device to a road surface.

11 is a side view of FIG. 10.

FIG. 12 is an overall perspective view showing a second embodiment of the present invention.

FIG. 13 is an explanatory diagram of a disassembled configuration of a main part, which is shown in a simplified manner.

FIG. 14 is a cross-sectional view of a main part.

FIG. 15 is a simplified plan view for explaining the operation.

[Explanation of symbols]

A blade unit C plate 1,1A, 3 blade 2 breaks (non-grounded part) 2a Non-grounded part (fluid discharge part) 4, 5, 6 Hinge part 7,8 Tacking tack 9A, 9B, 10A, 10B blade fixing member 11, 12, 13 screw 14, 15, 16 through holes 17, 18 Different diameter hole (guide groove) 19 Adjustment lever 20 Movable distribution plate 21 fixed screw 22 Join 23 Collar 24 Large diameter hole 25 space 26 burners 27 receiving tank 28, 29 Heat shield 30 Falling coating layer thickness 31 Blade coating layer thickness 32 Insufficient layer thickness (dashed line) 33 Normal layer thickness 34 Coating defect 35 Normal application part 36 Following the concave portion of the road surface 37 Flattening of road surface recess 40 Joint 41 Offset layer thickness 42 Normal thickness 43 liquid drop 51 Tar surface following the road surface (coating layer) 52 uneven road surface 53 Road surface with flatness (coating layer) 61 nozzles 62 Adjustment lever (handle) 63 valves 64 inner cylinder 65 Outer cylinder 66 wheels 67 handle 68 dolly 69 melting tank 70 gas cylinder 71 lever 72 valves 73, 78 Discharge pipe 74, 75 arms 76 pin 77 small wheels 79 First valve 80 Second valve 81 Detection arm 82 grounding wheel 83 lever 84 Mounting member 85 Mounted part 86 Fastener

Claims (6)

[Claims] 1. A road construction applicator for applying a road construction fluid to a road surface to apply it in strips, characterized by comprising a blade of a heat-resistant elastic body having a grounded portion and a non-grounded portion. Coating device. 2. The road construction according to claim 1, wherein the blade has a plurality of blades, and adjacent blades are connected by a hinge mechanism capable of changing a plane angle of each blade so as to adjust a coating line width of a fluid. Coating device. 3. A plurality of blades, wherein all blades are grounded by changing the angle of the blades.
Or the coating device for road construction according to 2. 4. The blade has a cylindrical shape, and the blade has a lower surface with a 1
The coating device for road construction according to claim 1, wherein at least one cut is formed as a non-grounded portion. 5. A blade is attached to a lower surface of the plate, and a movable fluid flow distribution plate is provided on the plate.
The coating device for road construction according to 2, 3 or 4. 6. A method for applying a fluid for road construction, wherein a blade which is elastically deformable and capable of contacting a road surface spreads the fluid to obtain flatness of the road surface.