KR20210051440A - Pavement crack repair apparatus and Repair method for pavement cracks using apparatus - Google Patents

Abstract

The present invention relates to a pavement crack repair apparatus and a pavement crack repair method using the apparatus, comprising: a mortar supply unit that loads a mortar and sprays the mortar on the upper surface of a cracked part of a road; a water supply unit that stores water and sprays water on the sprayed mortar; an even part that fills the sprayed mortar inside the crack and level it to the same level as the road; and a control unit for controlling a maintenance device unit. Without crushing or cutting the road, the mortar is sprayed on the cracks in the road, and water is sprayed and leveled with the road, thereby saving cost and time.

Description

Pavement crack repair apparatus and repair method for pavement cracks using apparatus

The present invention relates to a pavement crack repair device and a pavement crack repair method using the device, and more particularly, it is characterized in that mortar is sprayed on cracks of the pavement and water is sprayed, and then the same height as the road is selected. Thus, it relates to an apparatus and method for repairing cracks in pavement that can reduce cost and time.

On the pavement, a spalling phenomenon occurs when a load is repeatedly transmitted by an overloaded vehicle, and a crack occurs due to the pavement falling off or being broken. In addition, during natural disasters, cracks occur due to contraction and expansion due to temperature changes in the process of leaking or freezing due to snow or rain. In addition, when there is a lot of rainfall, calcium chloride is sprinkled to quickly melt the snow, which also causes cracks to occur. When such a crack occurs, durability and usability are deteriorated in the long term due to corrosion caused by water penetration other than chemical corrosion, and if the crack persists for a long time, there is a risk of eventually causing collapse, so it is necessary to continuously manage and repair it. In order to secure the stability and performance of these pavements, it is important to perform repairs at an early stage to prevent further cracking.

In the conventional crack repair construction, a larger area than the crack is removed by crushing and cutting the pavement wider than the crack to create a repair groove in the shape of a triangle, square, trapezoid, and sector. The life span of the product was shortened, and the process of applying an adhesive was additionally included, requiring large equipment, increasing the operator's working time, and increasing maintenance costs.

(Korean registered patent) KR 10-0821238 (Korean registered patent) KR 10-1523288

The present invention for solving the above problems is to reduce the size of the repair device and reduce the cost and time by spraying mortar on the cracks without crushing and cutting the road, spraying water, and evenlying it at the same height as the road. An object of the present invention is to provide a crack repair device and a pavement crack repair method using the device.

In the pavement crack repair apparatus of the present invention and a pavement crack repair method using the apparatus,

A mortar supply part for loading mortar and spraying the mortar on the top surface of the cracked part of the road, a water supply part for storing water and spraying water on the spread mortar, and a water supply part for spraying water to the spread mortar, and filling the sprayed mortar inside the cracked part and selecting it at the same height as the road. And a maintenance device unit including a pick-up unit and a control unit for controlling the maintenance device unit.

In addition, the repair unit further includes a compressor that provides high-pressure air after compressing air to remove foreign matter stuck inside the cracked portion, and a drying unit that supplies dry air to remove moisture from the mortar inside the cracked portion. .

The mortar supply unit further includes a hopper for receiving and loading mortar from the outside, and a sprinkler for spraying the mortar supplied from the hopper onto the crack.

The mortar supply unit further includes a screw spreader for spraying the mortar transferred from the hopper while transferring the mortar in both directions from the center so that it spreads widely in the horizontal direction on the pavement.

The mortar supply unit further includes a corrugated pipe spreader that is easily expanded and contracted by folding wrinkles so that the mortar transferred from the hopper can be sprayed only on cracks.

A partition member located in the middle portion so as to supply the mortar to either a screw spreader or a corrugated pipe spreader disposed horizontally inside the hopper is further included.

The repair unit further includes a crack detection unit for detecting the position of the crack portion, wherein the crack detection unit includes: an image processing unit for photographing a state of the top surface of the pavement with a camera and converting the obtained analog image data into digital data; It further includes a sprinkler control unit receiving the information output from the image processing unit from the control unit and spraying mortar on the cracks.

In the pavement crack repair method using a pavement crack repair device, A: A running step in which the pavement crack repair device runs manually or autonomously along the crack detected by the crack detection unit, and C: mortar on the upper surface of the crack. A spraying step of spraying and D: a spraying step of spraying water on the sprayed mortar, and E: filling the sprayed mortar inside the cracked part, and a leveling step of selecting the same height as the road.

After the step A, B: further includes a cleaning step of removing foreign substances trapped inside the cracked portion.

After the step E, F: further includes a drying step of shortening the curing time by providing dry air to the upper surface of the mortar.

The present invention for solving the above problem can reduce cost and time, and reduce the size of a repair device because the road is not crushed or cut.

In addition, foreign matter removal and drying functions are added, so that the mortar can be quickly cured.

It can also be mounted on or removed from the vehicle, allowing you to work more efficiently in maintenance work environments.

1 is a photograph showing a cracked part in which a crack has occurred in a pavement.
2 is a view showing a crack repair apparatus according to the prior invention.
Fig. 3 is a diagram showing that a repair groove is created according to the conventional invention.
Figure 4 is a conceptual diagram showing a pavement crack repair apparatus according to the present invention.
5 is a diagram showing the components.
6 is a view showing that the vehicle is mounted or towed according to an embodiment.
7 is a perspective view showing a mortar supply unit.
Fig. 8 is a side view showing the hopper.
9 is a perspective view showing the spreader.
Fig. 10 is a diagram showing a screw spreader.
11 is an overall view showing a corrugated pipe spreader.
12 is a perspective view showing an embodiment using a corrugated pipe spreader.
13 is a conceptual diagram showing the operation of the embodiment using a corrugated pipe spreader.
14 is a plan view showing the operation of the embodiment using a corrugated pipe spreader.
15 is a conceptual diagram showing the operation of the embodiment using a corrugated pipe spreader.
16 is a perspective view showing another embodiment using a corrugated pipe spreader.
Figure 17 is a side view showing the operation of the embodiment using a corrugated pipe spreader.
18 is a view showing a mortar spraying process using the pavement crack repair apparatus of the present invention.
Fig. 19 is a diagram showing an example of a crack detection unit.
20 is a diagram illustrating a process of removing noise by an image processing unit.
21 is a diagram illustrating a process of unifying data by an image processing unit.
Fig. 22 is a diagram showing an operation procedure of the pavement crack repair apparatus according to the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

The embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shape of the element in the drawings may be exaggerated to emphasize a clearer description. It should be noted that in each drawing, the same member may be indicated by the same reference numeral.

In addition, detailed descriptions of known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention will be omitted.

Fig. 1 is a photograph showing that a crack has occurred in a paved road and is subject to a repair work (hereinafter referred to as'work') of a pavement crack repair apparatus according to the present invention.

2 is a view showing a crack repair apparatus according to a conventional invention, which causes traffic congestion and increases the cost burden as large equipment is required.

Fig. 3 is a diagram showing the generation of a repair groove according to the conventional invention. In the process of generating the repair groove, the lifespan is shortened as the existing pavement is lost by crushing and cutting to a larger size than the cracked portion, and an additional bonding process is included, thereby increasing the cost burden.

As shown in Fig. 4, the present invention includes a repair device unit 10, a crack detection unit 80, a transport unit 70, and a control unit 41.

As shown in Fig. 5, the maintenance unit 10 includes a mortar supply unit 11, a water supply unit 21, and a leveling unit 31, and further includes a compressor 51 and a drying unit 61.

Here, the mortar supply unit 11 is a hopper 12 for loading the mortar 90, which is a material used in the present invention, after being supplied from the outside such as ready-mixed concrete or a bag, and the mortar 90 transferred to the hopper 12. It includes a sprinkler (14) for spraying the cracks (91). The hopper 12 includes a mortar input port into which the mortar 90 is inserted, a loading space, which is a space in which the mortar is loaded, and a mortar spreading port for spraying the mortar. The spreader is provided with a path through which the mortar 90 is easily sprayed on the cracks. Here, the passage includes a screw spreader 16 and a corrugated pipe spreader 18. In addition, the mortar supply unit 11 can be made of any one of stainless steel, reinforced plastic, and high-strength steel.

Here, the following mortar may be used in the pavement crack repair apparatus according to the present invention. Mortar includes cement, synthetic slag fine powder, shrinkage reducing material, polymer resin, and fiber, and is a mixture of 35 to 80% by weight of cement, blast furnace quenching slag and blast furnace slow cooling slag in a ratio of 6 to 8: 1 to 2, and has an average particle diameter. It includes 5 to 40% by weight of synthetic slag fine powder of 2 to 10 μm, 5% to 25% by weight of shrinkage reducing material, 0.3 to 1.3% by weight of polymer resin, and 0.2 to 2% by weight of fiber.

The synthetic slag fine powder is a mixture of blast furnace quenching slag produced by rapid cooling and blast furnace slow cooling slag produced by slow cooling in a weight ratio of 5 to 8: 1 to 2, and has an average particle diameter of 2 to 8 μm. It is obtained by grinding using a mill or vibration mill.

The blast furnace quenching slag fine powder is an amorphous latent hydraulic material, and is mainly used as an admixture material for concrete, and its advantages include suppression of temperature rise due to heat of hydration, suppression of alkali silica reaction, and improvement of chemical resistance to sulfate or seawater. It can be expected, but the neutralization resistance is weak. On the other hand, the blast furnace slow cooling slag fine powder is slowly cooled and crystallized and has no hydraulic properties. It is known that a filler without hydraulicity exhibits a neutralization inhibitory effect, and its mechanism has also been elucidated. If these materials are used well, it is possible to exhibit a self-defense function against neutralization. If a material that reacts with CO 2 gas that causes neutralization is applied rather than a simple filler, the surface of the cured body becomes very densified by carbonation reaction, and thereafter, the penetration of CO 2 gas into the cured body is suppressed. The main component of the blast furnace slow-cooling slag, Merrilite, does not hydrate, but exhibits a carbonation reaction and densifies the structure, thereby making it difficult for CO 2 gas to pass through the surface of the cured body. Therefore, in order to have high durability, the hydrostatic blast furnace quenched slag fine powder and the non-hydraulic blast furnace slow cooling slag fine powder are mixed to take advantage of the existing blast furnace rapid cooling slag fine powder, and the parts that were vulnerable to neutralization are converted to the blast furnace slow cooling slag fine powder, which is a non-hydraulic material. Supplemented. The synthetic slag fine powder is preferably composed of 3 to 40% by weight. If the synthetic slag fine powder is less than 5% by weight, it is difficult to secure the desired durability, and if it exceeds 40% by weight, it takes a long time to obtain the required strength, and there is difficulty in expressing appropriate physical performance.

The shrinkage reducing agent is characterized in that it is prepared by mixing calcium sulfo aluminate and gypsum in a weight ratio of 4 to 9: 1 to 6, and the amount used is preferably 5% to 20% by weight of the binder. If it is less than 5% by weight, it is difficult to control cracks due to initial shrinkage and expansion, and if it exceeds 20% by weight, it is difficult to secure a working time due to a rapid reaction, and there is a problem that may cause abnormal expansion. Here, as the gypsum, at least one selected from half-water, dihydrate, and anhydrous gypsum may be used, but is not limited thereto.

It is preferable to use 0.3 to 1.4% by weight of the polymer resin, and if it is used in an amount of less than 0.4% by weight, it is difficult to achieve its purpose, and when it exceeds 1.3% by weight, it interferes with the generation of hydration products during the hydration reaction, thereby reducing the strength.

The fiber is effective in initial construction stability after mortar construction as it can improve flexural strength and tensile strength as well as reduce the occurrence of cracks, and at least one selected from cellulose fibers, polypropylene fibers and polyethylene fibers for the purpose of increasing initial dispersibility. Fiber may be used, but is not limited thereto. In addition, it is preferable to use 0.2% by weight to 1.7% by weight of the fiber, and when it is less than 0.2% by weight, the effect of improving tensile strength and flexural strength cannot be seen, and when it exceeds 2% by weight, workability due to an increase in water consumption This is a bad, expensive material, so there is an uneconomical problem.

In addition, it includes the binder and silica sand. Specifically, it includes 100 parts by weight of the binder and 20 to 70 parts by weight of silica sand. The silica is not particularly limited, and may be used to average particle diameter include 15 ~ 25 ㎜ the heavy 20-40% by weight of the filaments 50 to 70% by weight, average particle diameter of 0.2 ㎜ ~ 1.3 ㎜, the content of cement It is preferable that it is 20-50 parts by weight of 100 parts by weight.

As a specific manufacturing method, blast furnace quenching slag produced by rapid cooling in a steel mill and blast furnace slow cooling slag produced by slow cooling are mixed in a weight ratio of 7 to 9: 1 to 3, and are pulverized to have an average particle diameter of 2 to 10 µm. Preparing a fine powder; preparing a shrinkage reducing agent by mixing calcium sulfo aluminate and gypsum at a weight ratio of 4 to 9: 1 to 6; and 35 to 70% by weight of cement, 5 to 35% by weight of the obtained synthetic slag fine powder %, mixing 5% to 15% by weight of the obtained shrinkage reducing material, 0.5 to 1.5% by weight of a polymer resin, and 0.2 to 2% by weight of fiber; includes.

In addition, a waterproofing agent component may be further included in the mortar and used. The waterproofing agent contained above is 25 to 45% by weight of a functional binder, 5 to 15% by weight of silica sand, 1 to 7% by weight of silicon dioxide, 0.1 to 8% by weight of a polymer admixture, 0.1 to 10% by weight of a water reducing agent, 0.1 to 10% by weight of a defoamer, and blending It is characterized by consisting of 40 to 50% by weight.

In addition, the functional binder is Portland cement 5 to 45% by weight, blast furnace slag 1 to 25% by weight anhydrous gypsum 1 to 20% by weight, sodium metasilicate 10 to 12% by weight, tricalcium aluminate 10 to 12% by weight, aluminum titanic acid 10 to 12 wt%, metakaolin 10 to 12 wt%, sodium fluoride 1 to 8 wt%, sodium carbonate 1 to 8 wt%, sodium sulfate 1 to 8 wt%, isobornyl acrylate 1 to 4 wt% and hydroxymethyl It is characterized by consisting of 1 to 4% by weight of cellulose.

In addition, the water reducing agent is characterized in that at least one water reducing agent selected from naphthalene sulfonate-based, melamine sulfonate-based and polycarboxylic acid salt-based.

In addition, the polymer admixture is polycyclohexane-1,4-dimethylene terephthalate copolymer 30 to 35% by weight, butadiene-acrylonitrile copolymer 20 to 25% by weight, methyl acrylate-methyl methacrylate copolymer 10 -15 wt%, ethylene-vinyl acetate copolymer 10-15 wt%, polyimide 10-15 wt%, polyisobutylene 0.1-3 wt%, polymethyl methacrylate 0.1-3 wt%, vinylidene chloride 0.1 to 3% by weight of vinyl chloride copolymer, 0.1 to 3% by weight of acrylic acid ester copolymer, 0.1 to 3% by weight of polymethacrylic styrene, 0.1 to 3% by weight of vinyl acetate-vinyl chloride copolymer and 0.1 to of ethylene-ethyl acrylate It may be composed of 3% by weight.

In addition, a waterproofing agent component may be further included in the mortar and used. The waterproofing agent contained above is 25 to 45% by weight of a functional binder, 5 to 15% by weight of silica sand, 1 to 7% by weight of silicon dioxide, 0.1 to 8% by weight of a polymer admixture, 0.1 to 10% by weight of a water reducing agent, 0.1 to 10% by weight of a defoamer, and blending It is characterized by consisting of 40 to 50% by weight.

In addition, the functional binder is Portland cement 5 to 45% by weight, blast furnace slag 1 to 25% by weight anhydrous gypsum 1 to 20% by weight, sodium metasilicate 10 to 12% by weight, tricalcium aluminate 10 to 12% by weight, aluminum titanic acid 10 to 12 wt%, metakaolin 10 to 12 wt%, sodium fluoride 1 to 8 wt%, sodium carbonate 1 to 8 wt%, sodium sulfate 1 to 8 wt%, isobornyl acrylate 1 to 4 wt% and hydroxymethyl It is characterized by consisting of 1 to 4% by weight of cellulose.

In addition, the water reducing agent is characterized in that at least one water reducing agent selected from naphthalene sulfonate-based, melamine sulfonate-based and polycarboxylic acid salt-based.

In addition, the polymer admixture is polycyclohexane-1,4-dimethylene terephthalate copolymer 30 to 35% by weight, butadiene-acrylonitrile copolymer 20 to 25% by weight, methyl acrylate-methyl methacrylate copolymer 10 -15 wt%, ethylene-vinyl acetate copolymer 10-15 wt%, polyimide 10-15 wt%, polyisobutylene 0.1-3 wt%, polymethyl methacrylate 0.1-3 wt%, vinylidene chloride 0.1 to 3% by weight of vinyl chloride copolymer, 0.1 to 3% by weight of acrylic acid ester copolymer, 0.1 to 3% by weight of polymethacrylic styrene, 0.1 to 3% by weight of vinyl acetate-vinyl chloride copolymer and 0.1 to of ethylene-ethyl acrylate It may be composed of 3% by weight.

The water supply unit 21 sprays water, which is another material used in the present invention, onto the top surface of the sprayed mortar. The water supply unit 21 may include a water inlet for introducing water, a water tank for storing water, and a water jet for jetting water, and a water jet nozzle may be further included at the water outlet. In addition, the water supply unit 21 may be made of a plate-molded composite material obtained by impregnating and reinforcing glass fiber in a composite material obtained by mixing an unsaturated polyester resin with a filler, a catalyst, and a release agent.

In addition, when working in an inclined work section, as turbulence occurs in the water inside the water tank due to the inclination, vibration may occur, thereby affecting the repair and construction.

In order to solve this problem, a conduction wall in which a conduction hole is formed in the water tank may be installed as a partition wall.

The conduction wall is vertically partitioned between the upper and lower surfaces of the water tank, and a plurality of conduction holes passing through both surfaces of the conduction wall are formed, and the contact area and contact time are increased in the process of passing water through the conduction hole. Due to this, the conduction wall absorbs the impact of water, thereby reducing the vibration transmitted to the pavement crack repair apparatus 100 according to the present invention by the turbulent flow of water.

The leveling opening 31 fills the inside of the cracked part 91 with the sprayed mortar wet with water, and makes it even so that the height of the top surface of the existing pavement is the same. Here, the pick part 31 includes a support part, a coupling part, and a replacement part. The support part is fastened with a coupling part to one side of the bottom surface of the transport part 70, and a replacement part is fastened to one side of the coupling part.

One side of the support part is mounted on a bottom surface of the frame 71, a coupling part is mounted on the other side, and the replacement part is connected to the bottom surface of the coupling part.

The coupling part may be equipped with an elastic body to the outside, so that the shock transmitted through the replacement part may be absorbed.

The support part is made of a hard material to support the replacement part, and it is possible to adjust the height so as to contact the road as closely as possible.

The replacement part directly contacts the cracked part 91 with the sprayed mortar accumulated on the surface of the pavement. At this time, friction occurs. It can be made of any one of rubber, urethane, and synthetic resin, which are elastic materials to reduce friction and move smoothly on the surface of the pavement, and when worn, it can be replaced and used. In addition, since it is manufactured and used in various shapes such as rollers, plates, and blades, it can be used by selecting and replacing an appropriate shape according to the environment of each given pavement.

In addition, the leveling opening 31 may further include a squeeze form for selecting a paved road while rotating the squeeze mounted on the rotating shaft by receiving external power. Here, in the squeeze, a material having elasticity such as rubber or silicone is inserted between frames made of a hard material. The rotation shaft is characterized in that it rotates according to the power of a pneumatic device or an electric device.

The control unit 41 is a central processing unit that transmits and receives signals to control the pavement crack repair apparatus according to the present invention. The information determined by the crack detection unit 80 is transferred to the control unit 41, and the control unit 41 analyzes the received signal and then transmits the signal to the repair unit 10 so that each device is operated. . Here, an operable touch display or an operation panel in which an operator directly sets working conditions may be provided, and a storage medium may be additionally included. The storage medium stores data so that condition values necessary for work are immediately fetched, so that the operator can manually or automatically set appropriate working conditions, thereby providing conditions for autonomous driving. Through this, the worker has the effect of improving work efficiency compared to the same time.

For example, when a predetermined work section is determined, the operator measures a distance equal to the work section and then sets a distance value and condition on the operation panel of the control unit 41. Thereafter, autonomous driving is performed while transmitting a signal to each device to perform a task for a predetermined section, and automatically terminates when the task is completed.

In addition, when data is input to proceed with a work for a certain period of time, the work efficiency is improved by setting autonomous driving conditions to enable the worker to participate in other work by setting the automatic shutdown after a certain period of time without the intervention of the worker.

In addition, the transport unit 70 includes a frame 71 on which the maintenance unit 10 is mounted, a drive shaft mounted on a bottom surface of the frame 71, and a wheel 72 connected to the drive shaft.

Here, a partition having a hinge and a fixing device may be included in the frame 71. The partition is folded in the upper direction of the frame 71 and fixed by a fixing device to prevent the mounted maintenance unit 10 from shaking and from falling on the road.

The transport unit 70 has a direction controlled by a steering device and is equipped with an internal combustion engine device or an electric engine device that provides power, so that a worker operates by direct operation or receives a signal from the control unit 41 to autonomously drive. In a way, the present invention can be used.

Hereinafter, the compressor 51 and the drying unit 61 belonging to the maintenance unit 10 will be further described.

The compressor 51 degrades the adhesion between the mortar 90 and the existing pavement when a foreign material is stuck inside the crack 91, so after compressing the air, high-pressure air is injected to the outside to remove the foreign material. do.

Here, the compressor 51 may further include a space for sucking and storing foreign substances, and a pipe through which air passes through the center and a brush capable of rotating may be further mounted. Here, one side of the pipe is connected to one side of the compressor 51, and the other side is connected to the center of the brush, and has a structure capable of inhaling air.

The brush is mounted in a horizontal direction of a rotating shaft that rotates by receiving power from an external power device, and is fixed at a distance that contacts the top surface of the pavement. At this time, when the rotating shaft rotates, dust or foreign matter existing on the upper surface of the pavement is wiped out as the brush rotates, and the pavement can be cleaned by inhaling air and foreign matter from a pipe located in the center.

In addition, the compressor 51 provides compressed high-pressure air after being connected to the water supply unit 21 to increase the pressure inside the water tank, so that the force to inject water to the outside through the water injection port is increased. Help to increase.

In addition, the compressor 51 may be connected to the picker part 31 to accompany the picking operation.

When the squeeze shape is used among the embodiments of the squeeze part 31, as the squeeze rotates, the radius for selecting the mortar 90 becomes wider, thereby shortening the working time.

The drying unit 61 removes moisture from the mortar 90 remaining inside the crack portion 91 and provides heat to increase the temperature so as to shorten the curing time. The drying unit 61 may include a body generating heat and a ventilation hole having a telescoping function. Through this, after generating heat in the drying unit 61, heat is provided to the upper surface of the cracked portion 91 through the ventilation hole.

As shown in Fig. 6, a traction ring is mounted on the front or lower rear of the transport unit 70. As it is possible to work by being towed or mounted on a vehicle capable of loading generally widely used cargo using the traction ring, it is possible to select and work in an appropriate method in the environment of different paved roads.

Fig. 7 is a perspective view showing the mortar supply unit 11 of the pavement crack repair apparatus 100 according to the present invention, and Fig. 8 is a side view.

The mortar supply unit 11 is divided into a hopper 12 and a spreader 14.

The hopper 12 is manufactured in the shape of a truncated cone or a truncated cone, and has a shape having a lower area narrower than an upper area so that the mortar 90 is collected downward.

Here, the upper surface of the hopper 12 is openable and closed by a mortar input port that is supplied with the mortar 90 from the outside, and a loading space that is a space in which the mortar is loaded, and a mortar in which the mortar is collectively collected. It includes a sprinkler.

The net frame 13 may be mounted horizontally in the loading space in the hopper 12. There are many foreign substances around the actual work site. The mortar 90 used in the present invention must be present in a state not mixed with the foreign material to exhibit its full performance, so it is necessary to prevent it from being mixed with other foreign materials.

The net frame 13 is wider than the mortar particles, and has a net gap narrower than the size of sand or gravel, and is manufactured so that only the mortar 90 passes.

A partition member 17 located in the middle portion so as to supply the mortar to either of a screw spreader or a corrugated pipe spreader disposed horizontally in the inside of the hopper is further included.

The partition member 17 is divided into an upper partition member 17 and a lower partition member 17. One side of the lower partition member 17 is installed vertically at the center of the lower portion of the spreader, and the other side is coupled with a hinge. Accordingly, the screw spreader 16 and the corrugated pipe spreader 18 have respective spaces. One side of the upper partition member 17 is coupled to the hinge, and the other side seals the mortar spreading port so that the mortar 90 is not transported to the spreader 14. Accordingly, when the hinge rotates, the upper partition member 17 rotates along with it and seals the lower portion of the mortar spreading port to prevent the mortar 90 from being sprayed to the spreader 14.

In addition, a generally used motor may be mounted on the hinge shaft and may be automatically operated by receiving a signal from the control unit 41.

As an embodiment according to the present description, when a plurality of cracks 91 formed wide such as push cracks, corrugations, shobbing, and aging phenomena are formed in the transverse direction of the progression direction of the pavement crack repair apparatus according to the present invention. It is preferable to spray the mortar (90) using a screw spreader (16). At this time, the upper partition member 17 seals the corrugated pipe spreader 18 passage. Through this, the mortar 90 is transferred to the screw spreader 16 to spray the mortar 90. On the contrary, in the case of spraying the mortar 90 only on the cracked portion 91, it can be transferred only to the corrugated pipe spreader 18 by adjusting the angle of the hinge. In addition, it is also possible to spray simultaneously by placing the partition member 17 in the center.

In addition, a vibrating unit may be further installed on the side of the mortar supply unit 11.

The pressure of the mortar 90 loaded in the hopper 12 is increased by the load. Accordingly, since the contact area between the mortar 90 is widened and the frictional force is increased, a situation in which the mortar 90 is not smoothly discharged occurs. In addition, in the case of containing moisture existing outside, when the mortar 90 is adhered and adhered to become a lumped state, a situation in which the mortar 90 is not discharged smoothly occurs.

In order to solve this problem, a vibrating unit including a vibrator or a vibration motor is attached to the outer surface of the mortar supply unit 11 and then generates vibration, so that the mortar vibrates and can be separated. The vibration unit may be set to generate vibration at predetermined intervals every preset time, and the operator directly generates vibration when necessary through an operation panel.

In addition, an elastic support including an elastic body may be installed so that vibration is transmitted only to the vibration unit. The elastic support is mounted in a vertical direction between the lower surface of the mortar supply unit 11 and the upper surface of the frame 71. When vibration occurs in the vibrating unit, the elastic body included in the elastic support vibrates up and down to provide a cushioning effect.

As shown in Fig. 9, to describe the spreader 14 in more detail, the spreader 14 has a space formed therein, so that the screw spreader 16 and the corrugated pipe spreader ( 18) are included.

The screw spreader 16 includes a screw 15 connected to a screw motor 20 that provides power to the screw 15.

11 is a view showing an embodiment using the conveying pipe of the spreader of the pavement crack repair apparatus of the present invention.

In the spreader 14, the screw spreader 16 and the corrugated pipe spreader 18 have respective passages by the lower partition member 17.

Here, the screw 15 is threaded in both directions at the center to transfer the mortar. Here, bidirectional means are threaded in a clockwise direction on one side and a threaded thread on the other side in a counterclockwise direction.

The screw spreader 16 has a hole having an outer diameter wider than that of the screw 15 in the center of both sides of the screw spreader 16, through which one side of the screw 15 shaft is inserted and a fixing member is fastened, and a screw motor ( 20). Here, of course, the bearing can be inserted.

In addition, a spray hole 19, which is a hole for spreading the mortar 90 to the cracked portion 91, is formed on the bottom surface of the screw spreader 16.

As an embodiment, when there are a plurality of cracks 91 determined as a work target in the horizontal direction, it is selected to spray the mortar 90 through the screw spreader 16.

At this time, the mortar 90 is transferred to the screw spreader 16, and the screw 15 rotates, and the screw 15, which is threaded in both directions, has the mortar 90 at both ends relative to the center. Simultaneously with extrusion, the mortar is widely spread in the horizontal direction to the cracks 91 through the spraying holes 19.

In addition, a bearing may be mounted in the center of the screw 15 to further smooth the rotation of the screw 15.

11 to 17 are views showing an embodiment of a sprinkler.

The corrugated pipe spreader 18, characterized in that it is easy to expand and contract, moves reciprocally in the transverse direction of the progression direction of the pavement crack repair apparatus according to the present invention, and it is possible to spray the mortar 90, where the slider part 110 and the rail part 120 included.

Here, the slider unit 110 includes a slider 111, a slider guide 112, and a slider motor 113. The slider motor 113 used herein may be a motor for a general purpose, and in an embodiment of the present invention, a motor for adjusting an angle will be used.

The slider motor 113 is mounted horizontally on an upper rear surface of the spreader 14 and an upper surface of the partition member 17, respectively, and adjusts the angle by receiving a signal from the control unit 41.

Here, a funnel-type boot may be further mounted to wrap the corrugated pipe spreader 18 on the top of the spreader 14 and collect the mortar 90 more efficiently into one place.

The boot is mounted in the space between the rear surface of the spreader 14 and the rear surface of the screw spreader 16, and descends from the top of the spreader 14 to surround the corrugated pipe spreader 18. Thereafter, the mortar 90 delivered from the hopper 12 provides a function of collecting so that it can be transferred to the corrugated pipe spreader 18.

The boot can withstand the weight of the mortar 90 and is a material having strong elasticity and low friction with the mortar 90, such as silicone, polyvinyl chloride, vinyl resin, polyethylene, polypropylene, polystyrene, phenolic resin, It can be made of synthetic resin or leather such as polyester, polyurethane, or fluorine resin.

A space for inserting the corrugated pipe spreader 18 is formed in the center of the slider 111, and circular slider protrusions 114 are fastened to both side surfaces. One side of the slider protrusion 114 is fitted into a groove formed on a lower surface of the spreader 14, and the other side is fitted into a groove formed in the lower partition member 17. Here, it is preferable that the inner surface of the groove is made of a smooth metal so that it can move smoothly, and it is preferable to add a bearing.

The slider guide 112 is manufactured in a ring shape with an open inside, the shaft of the slider motor 113 is fixed in a shape into which a key can be inserted on one side of the inside, and a slider protrusion fastened to the slider 111 on the other side (114) is combined.

As an embodiment, in order to move the slider 111 to the right, the slider motor 113 is rotated counterclockwise. At this time, the slider guide 112 also rotates counterclockwise, and the slider protrusion 114 slides along the inside of the slider guide 112 and is formed on the spreader 14 and the partition member 17. Move the position to the right along the groove. Conversely, when it is desired to move the slider 111 to the left, the slider motor 113 rotates clockwise, and the slider protrusion 114 contacts the inner surface of the slider guide 112 and moves to the left. do. Accordingly, as the position of the slider 111 can be moved, the corrugated pipe spreader 18 moves along, and the mortar 90 is sprayed on the corresponding crack portion 91.

When the slider 111 is on the left side based on the direction of FIG. 14, it can be moved to the right as shown by the arrow shown in the figure, and it can be moved to the left on the right.

As shown in Fig. 16, as another embodiment of the present invention, a rail unit 120 for spraying the mortar 90 by allowing the corrugated pipe spreader 18 to move in the transverse direction may be further included.

The rail part 120 inserts the corrugated pipe spreader 18 into the center, and the rail slide 121 and the rail slide 121, which can be moved in a straight line, are guide members 122 and the rail that help to move the position of the rail slide 121 A rail motor 124 providing power to the slide 121 is included. In addition, among the above embodiments, the mortar boot 115 may be mounted.

Here, rail grooves 123 having a size slightly larger than the thickness of both ends of the rail slide 121 are provided on both inner surfaces of the spreader 14. Here, the rail groove 123 refers to a groove provided with a rail capable of reducing frictional force so that the rail slide 121 smoothly performs a linear reciprocating motion. The rail slide 121 is seated on the upper surface of the rail, and the rail slide 121 slides along the rail.

The shape of the rail may be in the form of the alphabet'V' shown in the drawing, or it may be used in the form of'Z' although not shown in the drawing.In addition, the rail slide 121 may be used in the direction of progression of the pavement crack repair apparatus according to the present invention. And it can be fixed so that it does not move in the backward direction, and any shape can be used as long as a linear reciprocating motion is possible.

In addition, in order to reduce friction and operate stably, the rail groove 123 is preferably made of a metal having excellent smoothness and flatness, and may be used by adding a bearing.

The rail slide 121 is seated on the upper surface of the rail at the same time as it is inserted into the rail groove 123, and a rack size 126 is attached to a bottom surface of a rod shape having a narrow width and a long length on one side of the bottom surface.

Here, the guide member 122 is further included.

The guide member 122 is fitted into a groove formed on the inner surface of the spreader 14 and mounted on the bottom surface of the rail slide 121, and a rack size 126 may be attached to the upper surface.

At this time, the rack size gear 126 meshes with the pinion gear 125 connected to the shaft of the rail motor 124 to convert the rotational force into linear motion, thereby enabling the movement of the rail slide 121.

Here, as shown in FIG. 14, in Embodiment A, the rack sizer 126 may be mounted on the bottom surface of the rail slide 121, and the rail motor 124 may be fixed to the upper surface of the guide member 122. .

In this case, the rail motor 124 is fixed, and only the rail slide 121 can be moved.

As in the B embodiment, a rail motor 124 is horizontally fixed to one side of a rod provided on the bottom surface of the rail slide 121, and a rack size 126 may be mounted on the upper surface of the guide member 122. have.

In this case, the rack size 126 is fixed, and the rail slide 121 and the rail motor 124 move together.

In addition, the axis of the rail motor 124 is fixed to face the lower direction of the rail slide 121, and a rack size 126 may be attached to a side surface of the guide member 122.

Through this, the control unit 41 transmits a signal to the rail motor 124 to operate the rail motor 124, and the pinion coupled to the rail motor 124 meshed with the rack sizer 126 As the gear 125 rotates, the rail slide 121 performs a linear reciprocating motion. Accordingly, the corrugated pipe spreader 18 fixed to the center of the rail slide 121 sprays the mortar 90 onto the cracks 91.

In addition, as shown in Fig. 17, the mortar boot 115 can withstand the weight of the mortar 90 and can be transferred to the corrugation pipe spreader 18.

18 is a diagram showing a mortar spraying process, which is an embodiment of the present inventors' pavement crack repair apparatus.

In the mortar supply unit 11, the mortar 90 is sprayed on the upper surface of the crack portion 91, and water is sprayed over the spread mortar 90 so that the mortar 90 is hardened. Thereafter, the mortar 90 is properly filled in the inside of the cracked part 91, and then the inside of the cracked part 91 is changed to the level with the roadway. The filling operation is performed.

Fig. 19 is a view showing a crack detection unit of a pavement crack repair apparatus according to the present invention.

In order for the present inventors to move the pavement crack repair device 100 along the crack 91, the crack detection unit 80 detects the crack 91 generated on the pavement and transmits a signal to the control unit 41. I would like to explain.

In general, the crack portion 91 of the pavement is split in half by a certain force acting as an external force due to the weight of the vehicle or the weather, thereby forming a gap forming a certain width and depth. The gap is very dark compared to the color of the pavement because it is difficult to be irradiated with light from the sun. As described above, the crack detection unit for distinguishing the pavement and the crack 91 using the difference in color includes an image device 81 and a sprinkler control unit. The image processing unit 81 processes the cracked part 91 of the analog data obtained after photographing the road in black, generates digital data for processing the pavement in white, and transmits the digital data to the control unit 41. .

The image processing unit 81 is installed in front of the frame 71 based on the traveling direction of the pavement crack repair apparatus 100 according to the present invention, and is mounted on a holder capable of adjusting the angle so that the lens can photograph the pavement. Is installed.

Here, the camera used in the image processing unit 81 may be a CCD camera.

The CCD camera is a photoelectric conversion sensor that converts light into an electric signal, and is divided into a photoelectric conversion unit that converts light into an electric signal and a transmission unit that stores and transmits electric charges converted by the photoelectric conversion unit. First, the light entering through the lens is recorded on the CCD and separated into different colors by the RGB color filter.

After that, the separated colors are converted into electrical signals in more than hundreds of thousands of optical sensors constituting the CCD, and the analog signal output through the CCD is converted into a digital signal of 0 or 1 to create an image signal, which is then displayed through a monitor.

In addition, in adjusting the magnification through enlargement or reduction of the camera, it can be used in any of a form that adjusts by manipulating a gear, a form that rotates an adjustment ring, or a form that adjusts using a motor.

Each of the sensor units 82 is mounted on the left and right sides of the frame front, lower, and wider than the width of the cracked portion 91, so that the pavement and the cracked portion are spaced apart from each other at a predetermined distance. It consists of a light-emitting part that emits light and a light-receiving part that converts the amount of reflected and returned light into an electric signal, and transmits the electric signal to the control part 41 to detect the crack part 91.

20 and 21 are diagrams showing a program of a crack detection unit of a pavement crack repair apparatus according to the present invention.

The image processing unit 81 acquires data after photographing the crack portion 91 of the pavement, and transmits digital data including coordinates and detailed information to the control unit 41. At this time, the data tracking step includes photographing the crack part 91, removing noise, and unifying data. The step of photographing the crack portion 91 is a step of photographing the pavement and storing the obtained data in the storage device of the image processing unit 81. Here, the pavement and cracks 91 and foreign substances may be included and photographed. In the noise removal step, data having a specific shape other than an elongated shape among the images input from the image processing unit 81 are recognized as foreign substances, and this is recognized as noise, and the data is removed. Common noise includes pavement cracks, tire marks, and gum marks. In addition, it is possible to avoid bulky foreign objects such as stones and branches.

When most of the data obtained by photographing by the image processing unit 81 come out in black, it is determined that a bulky foreign material is intercepting in the front, and stops or bypasses.

Subsequently, as shown in Fig. 19, a data unification step is included.

After setting a threshold value by analyzing the intensity of digital data obtained after the noise removal step, a binarization operation is performed to convert to have only two colors, black and white. Here, the cracks 91 may have different widths, including a single step of processing so that the remaining data are connected around black.

In more detail, when the width of the crack portion 91 is unevenly formed, a process of processing a line having a thickness of at least 1 pixel so as to be connected uninterruptedly in a portion formed with a narrow width is included.

It can be seen that the black data expressed as digital data is deleted from the outer side of both sides to create a thin solid line shape made with the minimum thickness, and this is the center of the crack part 91. Through this, there is an effect that the present inventors can move the pavement crack repair device 100 based on the center of the crack portion 91.

The above process is controlled by the following procedure.

The first operation section is erased when the following conditions are satisfied for the processing target black pixel I(i,j).

For pixel I(i,j), the number of connections of surrounding pixels is 1, for pixel I(i,j), there must be between at least 2 to 12 black pixels, and at least pixel I( One of i,j+1), I(i-1,j), and I(i,j-1) must be 255 as a background pixel, and at least pixels I(il,j), I(i+1,j ), I(i,j-1) must be 255, which is a background pixel. Then, if the above conditions are met, the pixels are removed.

The second operation section is erased when the following conditions are satisfied for the processing target black pixel I(i,j).

In the second operation period, the number of connections of pixels around the pixel I(i,j) is 1, and the number of black pixels among the surrounding pixels for the pixel I(i,j) must be between at least 2 to 12. ， At least one of the pixels I(i-1,j), I(i,j+1), and I(i+1,j) must be 255 as a background pixel, and at least a pixel I(i,j+1), One of I(i+1,j) and I(i,j-1) must be 255, which is a background pixel. Thereafter, if the above conditions are met, the first operation period and the second operation period are repeated until no pixels remain.

The spreader control unit 82 may perform autonomous operation using digital data secured by the image processing unit 81.

The digital data secured by the image processing unit 81 is transmitted to the spreader control unit 82. At this time, the sprinkler control unit 82 analyzes the digital data and transmits a signal so that the maintenance unit 10 can autonomously perform an operation.

For example, in the image processing unit 81, when the crack portion 91 is detected, the mortar 90 must be sprayed through the corrugated pipe spreader 18, and the information of the crack portion 91 is included. Data is transmitted to the sprinkler control unit 82. Thereafter, the sprinkler control unit 82 analyzes this and transmits a signal to perform a pickling operation after spraying the mortar 90 and spraying water.

Here, a temperature sensor capable of measuring the external temperature may be further included. When the temperature measurement data identified by the temperature sensor is transmitted to the sprinkler control unit 82, it is possible to determine whether or not the drying unit 61 is operated. Accordingly, if the autonomous operation is enabled together, the worker can feel less tired, thereby preventing human accidents caused by fatigue.

22 is a view showing the sequence of a method for repairing cracks on a pavement according to the present invention.

In the present invention, in the pavement crack repair method for achieving the object as described above, step A, which is a step in which the pavement crack repair device runs along the crack detected by the crack detection unit, is the present invention, the pavement crack repair This is a step in which the device 100 runs along the cracks 91.

In step B, which is a cleaning step for removing foreign substances stuck inside the crack part 91, when passing to the top surface of the crack part 91, the digital data obtained after photographing by the image processing unit 81 does not appear evenly as black data. It can be determined that a foreign material is stuck in the cracked part 91. In this case, after receiving high-pressure air from the compressor 51, the target foreign material is sprayed with air to remove it.

Step C, which is a step of spraying the mortar 90 on the upper surface of the cracked part 91, step D, which is a step of spraying water on the sprayed mortar 90, and the spread mortar 90 are applied to the cracked part 91 It includes step E, the step of filling the interior and selecting it at the same height as the road.

Here, in the step C, after placing the outlet of the mortar supply unit 11 on the upper surface of the crack 91, an operation of spraying a sufficient amount of mortar 90 is performed.

In the step D, water is sprayed to harden the sprayed mortar 90.

In the E step, the mortar 90 performs an operation to fill the gaps present in the cracks 91.

Step F, which is a drying step that shortens the curing time by providing dry air to the upper surface of the mortar 90, transfers heat to the upper surface of the crack 91 to maintain an appropriate temperature, and removes moisture to further Let it harden quickly. In addition, the work may be selectively performed according to the weather.

100: pavement crack repair device
10: repair device
11: Mortar supply
12: Hopper
13: net frame
14: spreader
15: screw
16: screw spreader
17: partition member
18: corrugated pipe spreader
19: sprinkling hole
21: water supply
31: Gorgaebu
41: control unit
42: sprinkler control unit
51: compressor
61: drying part
70: Transportation Department
71: frame
72: wheel
80: crack detection unit
81: image processing unit
90: mortar
91: crack part
110: slider unit
111: slider
112: slider guide
113: slider motor
114: Slider protrusion
115: mortar boots
120: rail part
121: rail slide
122: guide member
123: rail groove
124: rail motor
125: pinion gear
126: Rae size fish

Claims (10)

In the pavement crack repair device,
A mortar supply unit for loading mortar and spraying the mortar on the upper surface of the cracked portion of the road;
A water supply unit for storing water and spraying water on the sprayed mortar;
Repairing device unit including; filling the sprayed mortar inside the cracked portion and selecting the same height as the road; And
A control unit for controlling the maintenance device unit;
A pavement crack repair device comprising a. The method according to claim 1,
The maintenance device unit,
A compressor for providing high-pressure air after compressing air to remove foreign substances stuck inside the cracked portion;
A drying unit for supplying dry air to the inside of the cracked portion to remove moisture from the mortar;
A pavement crack repair device, characterized in that it further comprises. The method according to claim 1,
The mortar supply unit,
A hopper that receives and loads mortar from the outside, such as ready-mixed concrete or sacks;
A sprinkler for spraying the mortar supplied from the hopper onto the cracks;
A pavement crack repair device comprising a. The method of claim 3,
The spreader,
A screw spreader for spraying the mortar transferred from the hopper while transferring the mortar in both directions from the center so as to simultaneously spray the plurality of cracks in the transverse direction of the pavement;
A pavement crack repair device, characterized in that it further comprises. The method of claim 3,
The spreader,
A corrugated pipe spreader that is easily expanded and contracted with folds formed so that the mortar transferred from the hopper can be sprayed only on the cracks;
A pavement crack repair device, characterized in that it further comprises. The method according to claim 4 or 5,
A partition member located in the middle portion so that the mortar is supplied to either of a screw spreader or a corrugated pipe spreader disposed horizontally in the inside of the hopper;
A pavement crack repair device, characterized in that it further comprises. The method according to claim 1,
A crack detection unit installed in front of the repair device to detect a location of a crack portion;
But further include,
The crack detection unit,
An image processing unit for photographing the state of the top of the pavement with a camera and converting the obtained analog image data into digital data;
And a sprinkler control unit for inputting the information output to the image processing unit from the control unit and spraying mortar on the cracked portion. In the pavement crack repair method using the pavement crack repair device,
Step A in which the pavement crack repair device is manually or autonomously driven along the crack detected by the crack detection unit;
Step C, which is a step of spraying mortar on the upper surface of the cracked portion;
D step of spraying water on the sprayed mortar;
Step E, which is a step of filling the sprayed mortar inside the cracked portion and then selecting the same height as the road;
A pavement crack repair method using a pavement crack repair device comprising a. The method of claim 8,
Before step C,
Step B, which is a cleaning step of removing foreign substances stuck inside the cracked portion;
A pavement crack repair method using a pavement crack repair device further comprising a. The method of claim 8,
After step E,
Step F, which is a drying step of shortening the curing time by providing dry air to the upper surface of the mortar;
A pavement crack repair method using a pavement crack repair device further comprising a.

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