KR100758003B1 - Road construction for renovating and concrete and asphalt cutting machine with reduced noise system - Google Patents

Abstract

An apparatus for cutting concrete and asphalt with low noise and a method for renovating a road by using the same are provided to minimize the noise of the apparatus and to improve the durability of the apparatus when the road is renovated in order to repair water supply and drainage pipes. An apparatus for cutting concrete and asphalt with low noise includes a body(10), an engine(20), a blade(30), and a blade cover(40). The body(10) has a box shape. The body(10) is moved by a wheel. The body(10) rotates with respect to a rear portion in directions forward and backward an object to be cut. The engine(20) is installed on the body(10). The blade(30) receives power from the engine(20) to cut the object to be cut. The blade cover(40) covers the outer portion of the blade(30) while rotating corresponding to the height derived from the rotation of the blade(30) and the body(10).

Description

Low noise concrete and asphalt cutting device and road refitting method for renovation using it {ROAD CONSTRUCTION FOR RENOVATING AND CONCRETE AND ASPHALT CUTTING MACHINE WITH REDUCED NOISE SYSTEM}

1 is a perspective view of a low noise concrete and asphalt cutting device according to the present invention.

Figure 2a and Figure 2b is a side view showing the operation of the low-noise concrete and asphalt cutting device according to the present invention, respectively.

Figure 3 is a block diagram of a frame applied to a low noise concrete and asphalt cutting device according to the present invention.

Figure 4 is a block diagram of the cooling water injection means applied to the low noise concrete and asphalt cutting device according to the present invention.

Figure 5a and Figure 5b is a cutting process diagram according to the road cutting method for renovation according to the present invention, respectively.

Figure 6 is an illustration of a cutting line according to the road attachment method for renovation according to the present invention.

Figure 7 is another illustration of a cutting line according to the road attachment method for renovation according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: main body, 20: engine

21,22: silencer, 30: cutting blade

40: cutting blade cover, 41: skirt

50: position adjusting means, 60: frame

70: cooling water injection means,

The present invention relates to a low noise concrete and asphalt cutting device and a road refitting method for refurbishment using the same, and more particularly, to minimize the operation noise of the device when the road is refitted for the repair of water and sewage pipes buried underground. The present invention relates to a low noise concrete and asphalt cutting device and road refitting method for improving durability.

Typically, the asphalt or concrete is cut along the construction to repair roads and sidewalks completed by asphalt or concrete, or to bury pipes for waterworks, sewerage, and various electrical works.

In detail, roads in Korea usually have a thickness of about 200 to 300 mm, and the process of the opening process shows or forms a pair of black lines at regular intervals on the road surface, using the above-described cutting device. The first step of cutting to a depth of about 50 mm along the second step-breaking the asphalt between the pair of cutting lines using a breaker-the third step of smashing the broken asphalt.

As such, a cutting device for cutting asphalt and concrete is mainly used to cut asphalt and concrete while a cutting blade having a diamond tip attached to the end rotates by power.

As a cutting device according to the prior art, there is, for example, Utility Model Registration No. 272970.

Asphalt cutting device according to the prior art, the engine as a drive source is mounted on the inner side of the main body, the steering wheel is disposed on one side. Wheels are installed at the lower side of the main body, and a shaft having a gearbox is installed at the front side, and both sides of the shaft are rotatably mounted to selectively detachable cutting blades. A driven gear fixed to the shaft is installed inside the gear box, and the driven gear is installed in engagement with a drive gear mounted to a drive shaft of the engine. The driving force of the engine is connected to the reduction shaft by the first reduction pulley and the first belt, and the second reduction pulley provided on the reduction shaft is connected to the third reduction pulley and the second belt provided on the shaft. Therefore, when the drive shaft is rotated by the driving force of the engine, as the drive gear rotates the driven gear, the shaft rotates and the asphalt or concrete is cut by rotating the rotary knife.

However, according to the conventional asphalt and concrete cutting device and the attachment method there are the following problems.

Due to the operation of the cutting device, various noises are generated during cutting. There are various causes of noise such as noise caused by contact of cutting blade and cutting object, engine noise and exhaust noise. Among them, the noise and exhaust noise caused by the contact of the cutting blade and the cutting object are very severe (120dB) .However, since the cutting blade is exposed to the outside and the device for reducing the exhaust noise is noisy, the noise is heard outside. Complaints have been caused. In addition, although there is a cover surrounding the cutting blade, since the cover is fixed to the main body while covering only a part of the cutting blade without covering the entire cutting blade as the part of the cutting blade is exposed to the outside when the cutting operation is started. Noise is generated until the blade is inserted into the road and the cover is supported on the ground.

And, when cutting the asphalt, asphalt dust, debris and diamond debris of the cutting blade is generated due to friction between the cutting blade and the cutting object, and as the dust is scattered into the atmosphere, air is contaminated by scattering dust and workers and pedestrians Respiratory distress and disorders of the onset, the asphalt debris and diamond tip debris of the cutting blade is bounced to workers, etc. There is also a problem that a safety accident occurs.

In addition, the operation noise of the breaker during the second process (breaking with a breaker) is more than 120 dB, which causes the largest noise pollution along with the cutting noise at the time of opening.

In addition, according to the asphalt and concrete adhesion method according to the prior art as well as the noise problem as described above, there is a problem that the efficiency of the attachment and the durability of the equipment is inferior. Specifically, as described above, since the asphalt thickness of the road is 200-300 mm, all of the thickness of 200-300 mm should be cut, and the cutting blade has a diameter of 30 inches for cutting, for example, a maximum depth of 300 mm. The blade should be used, which causes a problem in that the cutting efficiency decreases due to the large frictional resistance between the cutting blade and the asphalt and the life of the cutting blade is shortened due to severe wear and breakage of the cutting blade.

The present invention is to solve the above-mentioned problems, low noise concrete and asphalt cutting device and the road for retrofit using the same to minimize the various noise during the repair of the road, the asphalt and concrete for the repair and repair of water and sewage pipes The purpose is to provide a method of attachment.

Further, another object of the present invention is to prevent the debris of the dust and cutting blades generated during the cutting for the attachment of road asphalt, concrete structures to the outside.

Low noise concrete and asphalt cutting device according to the present invention provided to achieve the above object, the body driven by the wheel; A cutting blade mounted on the main body to cut the cutting object while rotating by using the engine as a driving source; It is supported by the main body to be lifted and lowered when the height of the device is changed by the rotation by the cutting blade, characterized in that it comprises a cover for sealing the outside of the cutting blade.

In addition, the low-noise concrete and asphalt cutting device according to the invention is characterized in that the two-stage silencer is mounted on the exhaust system of the engine.

The present invention preferably further comprises a cooling water injection means for cooling the heat generated during operation of the cutting blade.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It must be interpreted to mean meanings and concepts.

As shown in Figures 1 and 2, the low noise concrete and asphalt cutting device 100 according to the present invention is moved by the wheel 11, the front of the center of the back to the cutting object in both directions (to be cut) A box-shaped body 10 configured to rotate in a direction toward or away from water; An engine 20 mounted on the main body 10; A cutting blade 30 for cutting the cutting object 1 (asphalt and concrete) by receiving power from the engine 20 and rotating it; It is rotatably assembled to the main body 10 includes a cutting blade cover 40 which seals the outside of the cutting blade 30 at all times while rotating in response to a change in height caused by the rotation of the main body 10 and the cutting blade 30. It is configured by.

Briefly explaining the operation of the cutting device 100 in order to help understand each component, in the beginning for the cutting operation, the end of the cutting blade 30 is supported on the road road surface to be cut, so that the main body 10 is shown in FIG. Maintaining the same inclined state, while operating the depth control lever 13 while driving the cutting blade 30 for cutting, the main body 10 rotates in a direction parallel to the road surface, the cutting blade 30 inside the road When the cutting blade 30 reaches the cutting depth and is inserted into the main body 10 along the cutting line to perform the cutting. When the cutting is completed, the cutting blade 30 is lifted out of the road by lifting the device. Here, since the rotation of the main body 10 by the depth control lever 13 is the same as in the prior art, a detailed description thereof is omitted.

The main body 10 is, for example, in the form of a box, and a plurality of wheels 11 are mounted at the bottom thereof, and a roller-shaped scale 12 is provided at the front end to guide the cutting along the line.

The engine 20 provides a rotational force to the cutting blade 30 through a power transmission means such as a belt, not shown, as a driving source of the cutting blade 30.

Cutting blade 30 is installed in the longitudinal direction on one side of the main body 10 and the shaft 31 of the center to receive the power from the engine 20 through the power transmission means to rotate the cutting object.

The cutting blade cover 40 is a box-shaped single product in which only a lower portion (or a portion of the lower portion and the main body 10 side) is opened to seal the outside of the cutting blade 30. Since the cutting blade cover 40 is made of steel, wear and tear of the cutting blade cover 40 may occur due to friction between the lower end of the cutting blade cover 40 and the ground, so that the lower edge of the cutting blade cover 40 is elastic. The skirt 41 of material (rubber etc.) is combined. And, the lid of a plurality (shown in the figure 3) that can see the inside of the cooling water to determine whether the injection state (coolant water injection means will be described in detail below) and the cutting blade 30 is normal ( 42) may be provided. The skirt 41 may be in the form of a plate or bellows.

The cutting blade cover 40 having such a configuration always supports the lower end of the cutting blade 30 on the road surface of the cutting object 1 even when the cutting blade 30 is inserted into the cutting object 1 or exposed to the cutting object 1. It is connected to the main body 10 via the position adjusting means 50 so as to.

For example, the position adjusting means 50 is supported by one or more guide rails 51 and the main body 10 which are formed on both sides of the cutting blade cover 40 in the vertical direction, respectively, and the cutting blade when the main body 10 rotates. Sliding along the guide rail 51 of the cover 40 consists of one or more guide rollers 52 for supporting the cutting blade cover 40.

Since the main body 10 rotates but the cutting blade cover 40 is moved up and down, the guide roller 52 has the cutting blade cover 40 always at the cutting object 1 regardless of the rotation of the main body 10. It should be supported so that it can always be held in position with respect to it, for example, it is supported through a frame 60 that is idly coupled to the shaft 31 of the cutting blade 30.

As shown in Figures 2a to 3, the frame 60 is a hub 61, the hub 61 and the guide rollers are assembled to be idling around the shaft 31 of the cutting blade 30 through the bearing 32 It may be composed of one or more connecting bars 62 connecting 52. In the drawings, reference numeral 63 is a roller bracket 63 to which the guide roller 52 is mounted and fixed to the connecting bar 62.

Here, the connecting bar 62 of the frame 60 is made of a pair, the hub 61 may be a fixed form between the pair of connecting bar 62.

Cutting blade cover 40 may be formed with a rail for guiding the rotation of the cutting blade shaft 31 when the main body 10 is rotated.

At the time of cutting by the cutting blade 30, high temperature heat is generated, and in order to prevent deformation due to the heat, cooling water injection means 70 (see FIGS. 2A and 4) is further included. The coolant injection means 70 is installed in the coolant tank 71 in which the coolant is stored, the pump 72 for pumping the coolant in the coolant tank 71, and the cutting blade cover 40, and is provided by the pump 72. It may be composed of a cooling water injection pipe 73 for spraying the cooling water supplied to the cutting blade (30). Cooling water injection pipe 73 may be disposed in pairs on both sides of the cutting blade (30). The injection pipe 73 may be mounted through the support bar 64 which is arranged perpendicular to the connection bar 62 of the frame 60.

In this embodiment, two stage silencers 21 and 22 (shown in FIG. 1) are provided to reduce driving noise of the engine 20. Since the configurations of the silencers 21 and 22 are the same as in the related art, detailed description thereof will be omitted.

Configurations not specifically described in the present embodiment are the same as the conventional one, various things can be used to achieve the object according to the present embodiment. That is, the cutting blade cover 40 for sealing the cutting blade 30 is applicable to all cutting devices for cutting the cutting object by all cutting blades.

Low noise concrete and asphalt cutting device according to the present invention is as follows.

As shown in FIG. 2A, when the cutting device 100 is set on the ground, the cutting blade cover 40 is lowered by its own weight so that the skirt 41 is supported on the road surface to seal the outside of the cutting blade 30.

When the engine 20 is driven, the cutting blade 30 rotates, and when the main body 10 is lowered through the depth control lever 13, the cutting blade 30 moves down along with the main body 10 while being cut ( 1) will be cut. At this time, the exhaust noise caused by the driving of the engine 20 is greatly reduced through the second stage silencers 21 and 22, and the cutting blade 30 is cooled by the coolant injected from the coolant injection means 70. As such, when the cutting blade 30 is inserted into the cutting object 1 on the road surface, the height of the device is changed, that is, the height is lowered, and thus the cutting blade cover 40 is guided by the guide roller 52. The state of being supported by the cut surface 1 road surface is maintained (see FIG. 2B). When the cutting blade 30 reaches the cutting depth, the device is moved forward to cut as much as desired. When the cutting is completed and the cutting blade 30 is mounted on the cut surface 1, the state as shown in FIG. 2A is maintained. That is, even if the depth of cut changes, the outside of the cutting blade 30 is always sealed by the cutting blade cover 40 so that the operation noise due to the rotation of the cutting blade 30 is attenuated, and when cutting by the cutting blade 30. The generated asphalt dust and fragments of the cutting blade 30 are blocked by the cutting blade cover 40 so that they do not scatter to the outside.

Road attachment method for renovation using low noise concrete and asphalt cutting device according to the present invention is as follows.

(S10) Cutting blades and cover determination. When renovation of water and sewage, electrical wiring work to determine the depth of attachment (depth) suitable for the construction, the size and quantity of the cutting blade 30 is determined.

(S20) Device setting. The method according to the present invention is to minimize the cutting noise by using the above-described low noise cutting device 100 and to cut through the cutting after cutting without cutting the work to be cut to minimize the overall mounting noise. When cutting the cutting object (1) in consideration of the frictional resistance of the cutting blade 30 and the cutting object (1) to the appropriate level using a cutting blade of a small size using a large cutting blade sequentially To keep the frictional resistance with the cutting object 1 at an appropriate level. For example, as shown in FIG. 5A, when the cutting depth of the cutting object 1 (asphalt) is 300 mm (that is, when the thickness of the cutting layer is 300 mm), the 14-inch cutting blade 30-1 is cut. The first cut with a cutting depth of 120 mm by replacing with a 22-inch cutting blade (30-2) and the second cut with a depth of 220 mm with a 30-inch cutting blade (30-3). Car cuts. That is, in consideration of the strength of the cutting blade 30 and the frictional resistance between the cutting object 1, when cutting a depth of about 800 ~ 120mm it is good cutting efficiency and the wear of the cutting blade 30 does not occur As such, only the frictional resistance of 120 mm thickness is generated during the first cut, and the frictional resistance of 100 mm (220-120 mm) is generated during the second cut, and 80 mm during the third cut. Since only the frictional resistance of the thickness (300-220㎜) is generated, cutting is possible in a short time even when low horsepower is consumed and wear of the cutting blade is not caused. Here, the diameter of the cutting blade is a value for cutting the cutting depth in each cutting process, the above-mentioned depth value can be adjusted in consideration of the frictional resistance between the cutting blade and the cutting object, the strength of the cutting blade, etc. will be.

Figure 5b shows that when cutting the concrete, even if the thickness of the cutting layer is 300mm the same as the asphalt shows that the concrete is cut to a smaller cutting depth than when cutting the asphalt because the strength is greater than the asphalt. When cutting concrete, cut first with 80 mm depth with 14-inch cutting blade (30-1)-Secondary cut with 150 mm depth by replacing with 18-inch cutting blade (30-2)-22-inch cutting blade (30-) 3) Cut 3rd to 220mm depth-Replace with 30 inch cutting blade (30-4) and cut 4th to 300mm depth.

(S30) cutting.

end. Cut main cutting line (L1). As shown in FIG. 6, a pair of dosing lines (not shown) are formed on the road road surface to be cut, and a pair of main cutting lines L1 is cut along the dosing line using the cutting device 100. Cutting is performed sequentially based on the above-described method to minimize the noise, as well as to prevent abrasion of the cutting blade 30 and to increase the cutting efficiency. The cutting depth of the main cutting line (L1) is the same as the cutting depth for the attachment can be removed by heavy equipment such as fork lane without breaking or breaking the asphalt between the main cutting line (L1).

I. Cut off the opening. A space for mounting the bucket of the fork lane should be secured to the main cutting line L1, and a pair of cutout securing lines L2 are cut in a direction orthogonal to the main cutting line L1 at one side of the main cutting line L1. do. When the cut-off portion securing line L2 is cut off, the cut-off portion A1 between the main cutting line L1 and the cut-off portion securing line L2 is in a state where it can be removed from the cutting object 1, Remove (A1) to secure the opening.

On the other hand, even if only one pair of cutting line (L1) and the opening opening securing line (L2) can be removed, it is possible to remove the opening opening securing portion (A1) to mount the bucket of the fork crane, but the cutting line (main cutting line Since the gap between L1 and the opening securing line L2 and the opening securing section A1 is smaller than the size of the bucket for inserting the fork-lane, the removal of the opening securing section A1 may be inconvenient. As shown in FIG. 6, the main cutting line L1 and the opening opening securing line L2 meet each other so that the removal of the opening securing section A1 is easier (part of the opening securing section A1). To further remove the cutout portion A2, which is cut by the cutout line L3, and then remove the cutout portion A2. Put the tool or bucket in the free space to remove the opening secured portion (A1) more easily.

Alternatively, as shown in FIG. 7, the cutting line L4 is obliquely cut so as to pass through the cutout securing line L2 and one of the main cutting lines L1 to form the cutouts A3 and A4 having different sizes, After removing the relatively small size of the catching portion (A3) before the sphere securing portion (A1) and then removing the remaining extracting portion (A4) to secure a large free space, the opening securing portion (A1) can be easily removed. It may be.

All. Scoop out. When securing the opening (S) is completed by mounting the bucket of the fork lane to the opening (S) to move the asphalt between the main cutting line (L1).

As a result, the opening work for the repair and repair of water and sewage pipes is completed, and as shown in the above description, the cutting work can be completed by discharging the asphalt between the main cutting lines L1 without hitting or breaking the work, so that the opening work is easy. And do not use breakers to break the asphalt.

As described above, according to the low noise concrete and asphalt cutting device according to the present invention and road refitting method for renovation using the same, the outside of the cutting blade is always sealed and the noise of the cutting blade is attenuated without spreading to the outside. You can minimize your complaints.

In addition, since the asphalt dust generated during cutting and the debris and the cutting blade debris are not scattered or bounced to the outside, respiratory difficulties and safety accidents caused by them can be prevented.

In addition, by cutting sequentially using low horsepower equipment without excessively large equipment, it is possible to reduce the operation noise of the equipment when cutting, and to shorten the cutting time to improve cutting efficiency and to prevent cutting blade damage. .

In addition, the attachment of the cutting object is completed in the process of cutting-discharging, so that the process of breaking the cutting object using a breaker as in the prior art is unnecessary, so that operation noise of the breaker can be eliminated.

While the invention has been described and illustrated in connection with a preferred embodiment for illustrating the principles of the invention, the invention is not limited to the configuration and operation as such is shown and described. Rather, it will be apparent to those skilled in the art that many changes and modifications to the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

Claims (8)

delete A box-shaped body moving by a wheel; An engine mounted to the main body; A cutting blade configured to rotate the cutting edge by receiving power from the engine; A cutting edge cover having an open box in a lower portion and connected to the apparatus main body so as to be lifted and lowered, the lower edge being supported on the road surface of the cutting object when cutting by the cutting blade to cover the cutting blade; In the low-noise concrete and asphalt cutting device comprising a position adjusting means for supporting the lower end of the cutting blade cover on the road surface of the cutting object, The position adjusting means. One or more guide rails which are formed on both sides of the cutting blade cover in the vertical direction, respectively, and one or more guide rollers fixed to the device body by a frame and disposed at a predetermined distance from each other to support the rails on both sides in a cloudable manner. Low noise concrete and asphalt cutting device, characterized in that the cover is guided to be supported on the road surface of the cutting object by the guide roller guided by its own weight. The low noise concrete and asphalt cutting device according to claim 2, wherein the frame comprises a hub which is rotatably assembled around the shaft of the cutting blade, and at least one connecting bar connecting the hub and the guide roller. The cooling water injection means of claim 3, further comprising a cooling water tank, a pump for pumping the cooling water in the cooling water tank, and a cooling water injection pipe installed in the cutting blade cover and spraying the cooling water supplied by the pump to the cutting blade. Low noise concrete and asphalt cutting device further comprising a. The low noise concrete and asphalt cutting device according to claim 4, further comprising an skirt of an elastic material coupled to the lower end of the cutting blade cover through a fastener. The first noise cutting line is cut by a cutting blade of the low noise concrete and asphalt cutting device by mounting the low noise concrete and asphalt cutting device according to any one of claims 2 to 5 on the road surface to be cut. Cutting a pair of main cutting lines by cutting a second main cutting line parallel to the first main cutting line by the cutting blade through the low noise concrete and asphalt cutting device at a predetermined distance from the cutting line; Cutting a pair of opening securing lines in a direction orthogonal to the main cutting line by using the low noise concrete and asphalt cutting device to mount a bucket of heavy equipment including a fork lane at one side of the main cutting line; Forming a mounting portion of the bucket by discharging the opening opening securing portion separated from the other section by the main cutting line and the opening opening securing line; And removing the cutting object between the main cutting lines while moving by mounting the bucket to the bucket holding part. 7. The method of claim 6, wherein the cutting of the main cutting line is performed by sequentially cutting the low noise concrete and the cutting blades of the asphalt cutting device from the smaller ones to the larger ones. The method according to claim 7, wherein in the bucket mounting portion forming step, by cutting the pruning line formed by the plunge line secured portion formed between the main cutting line and the pits securing line first remove the pits formed by the pruning line first, Road opening method for renovation, characterized in that the removal of the old sphere.

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