KR100824219B1 - Method of repairing construction of roads or bridges - Google Patents

Abstract

A cutting and grinding apparatus for concrete floor plates and a method for repairing roads or bridges using the same are provided to cut concrete which needs to be repaired with a cutting blade and to grind remaining concrete with a grinding blade. A cutting and grinding apparatus for concrete floor plates comprises a plurality of cutting blades(17) and a plurality of grinding blades(25). The cutting blades, which have a polygonal shaft hole(18), are installed on a polygonal shaft(15) at a regular interval. The polygonal shaft receives torque transmitted through a rotary shaft(3) of an engine(2) via a torque transmitting unit. The grinding blades are attached to the outer surface of a drum receiving torque from the rotary shaft. The cutting and grinding apparatus for concrete floor plates cuts and grinds the damaged concrete at the same time. The thickness of the cutting blade ranges 4mm to 6mm. The number of the cutting blades is 10 to 15. 2mm to 3mm thick gap-nuts(19) are installed between the cutting blades. Fastening nuts(20) are secured to two ends of the cutting blades, which are located at the furthest outside. The grinding blade is 6mm to 10mm thick and shapes into a star.

Description

Concrete slab cutting and cutting device and method of repairing construction of roads or bridges

1 is a schematic diagram showing a process of performing a conventional concrete repair.

2 is a schematic view of the concrete slab cutting and cutting device of the present invention.

Figure 3 is a schematic diagram showing a process for performing concrete repair according to the present invention.

Figure 4 is a schematic diagram of a concrete slab cutting device according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: concrete floor cutting and cutting device

2: engine 3: rotary shaft

4, 6, 8, 10, 13: pulley 15: polygon axis

16: brake 17: cutting blade

19: gap nut 20: fixing nut

The present invention relates to a concrete slab cutting and cutting device and a repair method for roads or bridges using the same. Specifically, the damaged floor concrete is cut and cut with a cutting and cutting device having a plurality of cutting blades and crushing blades. At the same time, stable chipping is possible while maintaining the optimal adhesion to the concrete floor, thus ensuring optimal working space when repairing damaged concrete roads while not affecting the traffic of the roads. The present invention relates to a concrete slab cutting and cutting device for preventing secondary damage, and to repairing roads or bridges using the same.

In general, the pavement of asphalt or concrete is composed of a soil compaction layer, that is, a soil layer from the lower part, a layer of optional material piled up with rubble or coarse stone on the ground, and a stone that is relatively finely crushed on the upper layer of the selected material. It is composed of a pavement layer which is the surface layer which is the top of the auxiliary base layer to be compacted and the auxiliary base layer is directly in contact with the tire of the vehicle.

In the pavement as described above, cracks or overload of vehicles running on the road due to the sponge phenomenon caused by the poor drainage of the subbase part or excessive soil content and water content of the subbase material on the pavement road. This causes cracks or breakage on the road surface.

In this case, only the damaged part such as crack or damage is cut and repacked in consideration of road traffic volume or economic reasons.

In the road repairing method such as repaving, such as asphalt road, cracks and the like are removed and repaired. In this case, the same conditions as the initial pavement cannot be performed, resulting in problems such as stepping. In this case, problems such as the need to cure up to the necessary strength should be included.

Various attempts have been made to solve the above problems.

Among them, Korean Patent No. 133613 discloses a road repair method for repairing a paved road by filling voids generated between the pavement and the ground with grout, but the first inclined hole drilling process to secure routing space, It has been questioned that it has to go through complicated processes such as the second inclined hole drilling process, the grouting space securing process, and the grouting filling process to level the road.

And the Republic of Korea Patent No. 230849 discloses a road repair method using a polyurethane-based resin, but as a road repair agent in a mixture of polyoxyethylene polyethane, 1.4 butanediol and tri isopropanolamine polyol in a polyurethane-based resin and It is doubtful that the road repair agent itself is uneconomical because the addition of a hardening agent is used, and the construction method is multi-layered by adding gravel and sand compound and spraying repair agent. Hardening and layer thickness are limited to 2mm, 0.5 ~ 1.5mm and 0.1 ~ 10mm every minute, so it cannot be implemented by road repair method.

Therefore, in order to solve the problems of the conventional road repair method, a patent application No. 10-2003-0060405 dated August 29, 2003 (road repair method) was proposed.

This means that if a damaged part such as a crack occurs in the pavement layer of the road, first, cutting and removing the damaged pavement layer such as a crack,

Drilling in the usual way from the next subbase to the optional material layer;

Discharging the water through the above-mentioned hole by osmotic pressure and then filling and solidifying a general cement paste, that is, a mixture of completely dried sand and cement powder, and

After the cement paste was filled into the perforated hole, the cement paste was solidified with the surrounding moisture, and then the pavement was repackaged to remove the damaged portion of the pavement layer to complete the road repair process.

However, according to the conventional road repair method as described above, in order to repair the damaged part of the concrete road, only the damaged pavement layer is removed, and the process of filling and resurfacing the cement paste through the perforated hole provides a partial and temporary repair. There was a problem such as not being too much, and interfere with the communication of vehicles passing through the road for maintenance.

On the other hand, as shown in Figure 1 as a method for repairing a conventional concrete road using an air compressor or a cutting machine,

Cutting the part of the concrete to be repaired using a cutter in two steps;

Chipping with Pureca using an air compressor,

The process of cleaning the residues, including concrete crushed by the Pureka by manpower or by using a sweeper,

Air cleaning and washing with high pressure water,

The process of pouring concrete,

The concrete may be made of carbide, epoxy or other concrete.

The process of laying concrete poured by manpower,

Curing the laid concrete;

After the joint was cut, the road or bridge was repaired by injecting the sealant.

However, while repairing the concrete road, cracks occurred around the concrete damaged by the carelessness of the operator, the damage caused by the breaking force of the air tool, and other tools.

In addition, a crack occurred in the lower part due to the impact of the lower part generated in the process of chipping with Pureca by using the air compressor.

And because chipping by Pureca is not made with the same thickness, it can not lead to the same impact on the continuous operation of the vehicle even after the repair is completed. Passing through the winter season, the secondary damage of the concrete caused by the lifting of the bottom portion.

In addition, the time required for cutting and sprinkling has increased, and thus, the traffic has to be controlled for many hours.

Accordingly, the present invention has been made to solve the conventional problems as described above, by cutting and cutting the damaged floor concrete with a cutting and cutting device having a plurality of cutting blades and crushing blades at the same time to the concrete floor surface It enables stable chipping while maintaining the optimal attachment force by preventing the damage to the traffic of the road while ensuring optimal working space when repairing damaged concrete roads. The purpose of the present invention is to provide a concrete slab cutting and cutting device and a repair method for a road or bridge using the same.

Concrete deck slab cutting and cutting device of the present invention for achieving the above object and repair method of roads or bridges using the same,

The second pulley and the third pulley which receives the rotational force of the engine through the first pulley to rotate together about the axis,

The fourth pulley and the fifth pulley which receive the strong rotational force through the second pulley and the third pulley are rotated about the polygonal axis,

A plurality of cutting blades having polygonal shaft holes are arranged side by side to the polygonal shaft with a brake at predetermined intervals to cut the damaged concrete side by side,

The drum is rotated by a polygonal axis that receives the rotational force of the engine from the first pulley,

Combining the crushing blade while forming a plurality of fixed shafts on the outer circumference of the drum to cut while cutting the remaining concrete that is not cut by the cutting blade to configure a concrete bottom plate cutting and cutting device,

The process of crushing while simultaneously cutting the concrete of the damaged and repaired areas to a thin thickness using the above cutting and cutting device,

Cleaning the concrete pieces cut by the cutting and cutting device using a cleaning car;

Air cleaning and washing with high pressure water,

The process of pouring concrete,

The process of laying concrete poured by manpower,

Curing the laid concrete;

After cutting the joint is characterized in that the repair is made by the process of injecting the sealant.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

Concrete floor plate cutting and cutting device 1 according to the present invention is to move in the same manner as the general vehicle by the wheel 21 and the engine 2 of the four corners, as shown in Figure 2 and the center of the engine (2) Using the rotational force generated from) to cut the concrete,

As the first pulley 4 coupled to the rotation shaft 3 of the engine 2 rotates, the second pulley 6 receiving the rotational force through the belt 5 also rotates together.

The third pulley 8 connected to the second pulley 6 through the shaft 7 also rotates together,

In the second pulley (6) to transmit a strong rotational force to the fourth pulley (10) connected through the belt (9),

The third pulley 8 also transmits a strong rotational force to the fifth pulley 13 connected through the belt 12,

At the same time to rotate about the polygonal axis (15) sandwiched between the polygonal shaft hole (11, 14) of the fourth pulley (10) and the fifth pulley (13),

The polygonal shaft 15 to which the brake 16 is attached is coupled to a plurality of cutting blades 17 having polygonal shaft holes 18 side by side at predetermined intervals to cut the damaged concrete side by side.

The drum 23 is rotated by the polygonal shaft 22 receiving the rotational force of the engine from the first pulley 4,

The outer periphery of the drum 23 is formed by combining the shredding blades 25 while forming a plurality of fixed shaft 24 to cut while cutting the remaining concrete that is not cut by the cutting blade 17.

The cutting blades 17 are provided with 10 to 15 pieces so that the thickness thereof is 4 mm to 6 mm, and the fixing nuts on both sides are placed in parallel while sandwiching the gap nuts 19 having a thickness of 2 mm to 3 mm therebetween. 20) to bond stably.

In addition, the thickness of the crushing blades 25, which are star-shaped in a pentagonal shape, may be 6 mm to 10 mm to crush the remaining concrete that is not cut while entering the gap formed by the cutter blades 17. .

Repair method of the road or bridge using a concrete slab cutting and cutting device according to the invention as shown in FIG.

Using the cutting and cutting device (1) to simultaneously cut the concrete of the damaged and repaired areas to a thin thickness, and

Cutting the lower end of the cut thin concrete with a cutting device;

Cleaning the concrete pieces cut by the cutting device using a cleaning vehicle;

Air cleaning and washing with high pressure water,

The process of pouring concrete,

The process of laying concrete poured by manpower,

Curing the laid concrete;

After cutting the joint, it is configured to be repaired by injecting the sealant.

Concrete deck slab cutting and cutting device of the present invention configured as described above and repair method of the road or bridge using the same,

According to the width of the concrete to be removed for repair in the state of moving to the place where repair work is required by the wheel 21 and the engine (2) of the four corners of the concrete floor plate cutting and cutting device 1 according to the present invention Stable engagement with the gap nut 19 and the fixing nuts 20 on both sides so that the interval between the cutting blades 17 having a thickness of 4 mm to 6 mm, which is usually 10 to 15, is appropriately adjusted to 2 mm to 3 mm do.

When the engine 2 is started in this state, cutting and cutting of concrete are performed by using the rotational force generated from the engine 2 located at the center.

That is, while the first pulley 4 coupled to the rotation shaft 3 of the engine 2 rotates, the second pulley 6 receiving the rotational force through the belt 5 also rotates together.

The fourth pulley 10 connected to the second pulley 6 via the belt 9 while the third pulley 8 connected to the second pulley 6 through the shaft 7 also rotates together. Ensure strong torque

In addition, the third pulley 8 also transmits a strong rotational force to the fifth pulley 13 connected through the belt 12.

Since the fourth pulley 10 and the fifth pulley 13 both form polygonal shaft holes 11 and 14, the polygonal shaft 15 is sandwiched therebetween, so that the fourth pulley 10 and the fifth pulley 13 rotate with a strong rotational force at the same time.

Therefore, the cutting blades 17 with the polygonal shaft holes 18 fitted in the polygonal shaft 15 to which the brake 16 is attached are made to thinly cut the concrete to be repaired while rotating with a strong rotational force.

At the same time, as the polygonal shaft 22 receiving the rotational force of the engine from the first pulley 4 rotates, the drum 23 fitted in the polygonal shaft hole rotates.

Residual concrete that is not cut by the cutting blades 17 because the crushing blades 25 forming a star shape in a pentagonal protrusion are coupled to a plurality of fixed shafts 24 formed on the outer circumference of the drum 23. Cut while cutting.

Therefore, the cutting and cutting of the concrete are made at the same time.

As described above, the concrete slab cutting and cutting device 1 is used to cut the concrete of the damaged and repaired area to a thin thickness while crushing the remaining uncut concrete with the crushing blade 25. To cut.

The pieces of concrete cut by the cutting and cutting device 1 are cleaned using a cleaning vehicle.

And cleaning and cutting and cut parts that require repair air cleaning and high pressure water to be washed.

After that, the concrete is placed in the area that needs repair, and after the concrete is poured by manpower, the laid concrete is cured.

Next, after the joint is cut, the repair is completed by injecting the sealant.

4 shows a concrete slab cutting device 30 according to another embodiment of the present invention,

The wheel 31 and the engine 32 of the four corners to move in the same manner as the general vehicle and to cut the concrete using the rotational force generated from the engine 32 located in the center,

As the first pulley 34 coupled to the rotation shaft 33 of the engine 32 rotates, the second pulley 36 that receives rotational force through the belt 35 also rotates together.

The third pulley 38 connected to the second pulley 36 through the shaft 37 also rotates together,

In the second pulley 36 to transmit a strong rotational force to the fourth pulley 40 connected through the belt 39,

The third pulley 38 also transmits a strong rotational force to the fifth pulley 43 connected through the belt 42,

At the same time to rotate about the polygonal axis 15 sandwiched between the polygonal shaft hole 41, 44 of the fourth pulley 40 and the fifth pulley 43,

The polygonal shaft 45 to which the brake 46 is attached is secured by fixing nuts 50 on both sides after a plurality of cutting blades 47 having polygonal shaft holes 48 are coupled to each other while sandwiching a gap nut 49 therebetween. Using the concrete bottom plate cutting device 30 is combined so as to cut the damaged concrete side by side.

Then, the drum is rotated by a polygonal shaft that receives the rotational force of the engine, and the remaining concrete not cut by the cutting blade is cut while being crushed by the cutting blades fixed to a plurality of fixed shafts formed on the outer circumference thereof. By doing so, the cutting device may be cut and then crushed by a separate cutting device.

As described in detail above, according to the concrete slab cutting and cutting device according to the present invention, and the road or bridge repairing method using the same, the concrete is cut twice with one cutting blade in a concrete repair work and then cut with Pureca. Because it is carried out by the closure, the work is time-consuming and completely prevents secondary damage from occurring,

In addition to improving the adhesion of new and old concrete, the work width is reduced, so that the vehicle can communicate smoothly during work.

The number of cleaning personnel is reduced, and construction work in the longitudinal and transverse directions of the existing design quantity is possible, and the cutting surface of concrete is formed to a certain thickness during the work, so that the impact of the wheels is transmitted evenly during the progress of the vehicle, so that the occurrence of defects due to the secondary impact Is less.

The cutting interval is constant, so the shape is good and the amount of work can be adjusted at the desired interval.

Claims (5)

Combining a plurality of cutting blades 17 having a polygonal shaft hole 18 side by side at a predetermined interval to the polygonal shaft 15 receives the rotational force transmitted through the rotation shaft 3 of the engine 2 through the rotational force transmission means, and , Concrete floorboard cutting and cutting device, characterized in that configured to cut while cutting the damaged concrete side by side by simultaneously combining a plurality of shredding blades (25) on the outside of the drum receiving the rotational force from the rotary shaft (3) at the same time. The method of claim 1, While the first pulley 4 coupled to the rotation shaft 3 of the engine 2 rotates, the second pulley 6 also rotates together. The third pulley 8 connected to the second pulley 6 through the shaft 7 also rotates together, In the second pulley (6) to transmit a strong rotational force to the fourth pulley (10) connected through the belt (9), The third pulley 8 also transmits a strong rotational force to the fifth pulley 13 connected through the belt 12, At the same time to rotate about the polygonal axis (15) sandwiched between the polygonal shaft hole (11, 14) of the fourth pulley (10) and the fifth pulley (13), A plurality of cutting blades 17 having polygonal shaft holes 18 are arranged side by side to the polygonal shaft 15 to which the brake 16 is attached, at a predetermined interval, Coupling the drum 23 to the polygonal shaft 22 receives the rotational force of the engine from the first pulley 4, Concrete bottom plate cutting and cutting device, characterized in that configured by combining the crushing blades 25 while forming a plurality of fixed shaft 24 on the outer circumference of the drum (23). The method of claim 1, The cutting blades 17 are provided with fixing nuts 20 on both sides, with the gap nuts 19 having a thickness of 2 mm to 3 mm interposed therebetween, while providing 10 to 15 pieces to have a thickness of 4 mm to 6 mm. Combine, Concrete crushing plate cutting and cutting device, characterized in that formed by forming the thickness of the shredding blades (25) having a pentagonal protrusion shape to be 6mm to 10mm. delete Clean a piece of concrete in the cut and cut areas using a cleaning car, Air cleaning and washing with high pressure water, Pour concrete, Laying concrete poured by manpower, Curing the laid concrete, In the repair method of roads or bridges using a concrete slab cutting and cutting device to be repaired by the process of injecting sealant after cutting the joint, Using the cutting and cutting device (1) to simultaneously cut the concrete of the damaged and repaired areas to a thin thickness, and Repairing the road or bridge using a concrete slab cutting and cutting device, characterized in that to perform the process of cutting while cutting the remaining uncut concrete with a shredding blade at the same time.

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