JP6694756B2 - Road cutter - Google Patents

Description

  The present invention relates to a road cutter. More specifically, it relates to a road surface cutter that does not stain the road surface with muddy water after construction.

On roads, bridges, and airport runways, repair work is required to cut and remove old pavement after each repair. To remove the old pavement, once make a vertical cut with a depth of about 20 to 30 cm, then peel off the old pavement and construct a new pavement.
For the above-mentioned vertical cutting work, a road surface cutter is used which makes a deep cut using one cutter blade in which a diamond tip is fixed to a blade on a disc.

  A typical configuration of the road surface cutter is also shown in Patent Document 1, in which wheels for traveling are provided on the lower surface of the vehicle body, and an engine, a motor or the like as a drive source for traveling and cutting is mounted in the vehicle body. .. A drive shaft for a cutter is attached to the lower surface of the vehicle body by a bearing, and one cutter blade is attached to one end of the drive shaft. The road surface can be cut by making a deep cut into the road surface while rotating the cutter blade.

  However, the dry road surface cutter generated dust when cutting the road surface, which adversely affected the surrounding environment. Therefore, in the related art such as Patent Document 2, the generated dust is absorbed in water and collected. As shown in FIG. 4, such a wet road surface cutter encloses the periphery of the cutter blade 101 with a cover 102 and then injects water from a pipe 103 into the cover 102 to cool the cutter blade 101 with water and to collect dust. The contained mud water is collected by the pipes 104 and 105. Between the cover 102 and the road surface, a bellows 106 is attached to the lower surface of the cover 102 so as to be as liquid-tight as possible, and a brush 107 is attached to the lower ends of the pipes 104 and 105 to prevent water from leaking to the outside. There is.

  However, even with the above-mentioned conventional wet road surface cutter, muddy water leaks from the gap between the bellows 106 and the brush 107 and the road surface. Therefore, if this is dried later, whitish powdery drying remains on the road surface. Then, it takes extra labor for cleaning to remove the dry powder soil.

JP 2001-295216 A JP 2001-107314 A

  In view of the above circumstances, an object of the present invention is to provide a road surface cutter that does not leave dirt on the road surface without cleaning after cutting the road surface.

A road surface cutter according to a first aspect of the present invention is a road surface cutter for cutting a road surface, the road surface cutter including a rotary drive source, a fresh water supply device, and a muddy water recovery device in the vehicle body. A cutting drive shaft for rotating a cutter blade and a cover that liquid-tightly surrounds the cutter blade are provided outside, and the cover is a substantially semicircular cover body that surrounds the cutter blade, and a lower end of the cover body. mounted, consists of a bellows in contact with the road surface, the rear position of the cover, has established a brush connecting the mud sucking pipe, mud water towards the outside of the front Symbol bellows inside the brush The cleaning water nozzle for pushing back is installed at a position where the cleaning water is sprayed onto the brush .
A road surface cutter according to a second aspect of the present invention is characterized in that, in the first aspect, a plurality of the cleaning water nozzles are provided at different heights from the road surface.
A road surface cutter according to a third aspect of the present invention is characterized in that, in the second aspect of the present invention, the cleaning water nozzle is provided with an attachment position adjusting mechanism that fixes the cleaning water nozzle to a vehicle body and can change its arrangement position.

According to the first aspect of the present invention, when the water sprayed from the cleaning water nozzle hits the brush, the muddy water which is about to leak from the brush is pushed back and can be sucked by the muddy water suction pipe, so that the entire amount of the muddy water is recovered by the water supply / discharge facility. .. Also, since the cleaning water is clean water, the road surface does not get dirty even if it remains on the road surface and it dries. For this reason, it is not necessary to clean-up clean maintain the road surface after the cutting.
According to the second aspect of the present invention, the cleaning water nozzles having different heights from the road surface can be selectively used according to the cutting depth of the cutter blade, so that the muddy water can be collected at any construction site having a different cutting depth.
According to the third invention, since the position of the nozzle and the spray angle of the cleaning water can be easily changed, the cleaning water can be sprayed onto the brush without fail even when the size of the cutter blade or the cover is changed, which is practically advantageous. is there.

It is a side view of the road surface cutter concerning one embodiment of the present invention. It is a piping system figure used for the road surface cutter of FIG. It is an operation explanatory view of a cleaning water nozzle. It is explanatory drawing of the magnetic sticking block which comprises an attachment position adjustment mechanism, (A) is a top view, (B) is a side view. It is explanatory drawing of the magnetic sticking plate which comprises an attachment position adjustment mechanism, (A) is a top view, (B) is a side view. It is a use explanatory view of an attachment position adjusting mechanism. It is a side view of the conventional road surface cutter.

Next, an embodiment of the present invention will be described with reference to the drawings.
First, the basic configuration of the road surface cutter A will be described with reference to FIG.
A vehicle body 1 is equipped with an engine, which is a rotational drive source required for a road surface cutter, a traveling mechanism for traveling on the road surface, hydraulic equipment for adjusting the depth of cut, and the like. These structures are not different from known road surface cutters.

  Wheels 2 for traveling are attached to the lower surface of the vehicle body 1. In addition, the front and rear of the vehicle body 1 can be moved up and down by a not-shown adjusting roller for adjusting the notch, and the notch amount of the cutter blade 3 described later can be adjusted.

  FIG. 1 shows a state in which the cutter blade 3 is attached to the cutting drive shaft attached to the lower surface of the vehicle body 1. A cover 4 is attached so as to surround the cutter blade 3 shown by the dotted line. The cover 4 has a bellows 5 made of rubber on the lower surface of a semicircular cover body so that the cooling water supplied to the inside does not leak outside.

  Further, the vehicle body 1 is equipped with a fresh water supply device 10 for cooling and the like and a muddy water recovery device 14 for recovering muddy water generated. The fresh water supply device 10 includes a tank for storing cooling water, a pump for sending the cooling water, and the like. The muddy water recovery device 14 is composed of a pump for absorbing used cooling water (muddy water containing dust), a tank for storing muddy water, and the like.

Cooling water is supplied during cutting by the cutter blade 3 to prevent overheating, but the cooling water is supplied and discharged as follows.
As shown in FIG. 1, cooling water for cutting is supplied to the top of the cover through a pipe 17. The pipe 17 is connected to a fresh water supply device 10 provided inside the vehicle body 1.
On the other hand, in order to collect muddy water, brushes 6 and 7 are arranged in front of and behind the cover 4, and suction pipes 12 and 13 are connected to the brushes 6 and 7, respectively. The pipes 12 and 13 are connected to a tank of a muddy water recovery device 14 provided in the vehicle body 1 and a suction pump (not shown) provided inside the tank.

  During the cutting of the road surface by the cutter blade 3, since cooling water is supplied into the cover 4 through the pipe 17, the cutter blade 3 can cut the road surface without heating. Further, the supplied cooling water is not scattered in large amounts by the cover 4 and the bellows 5 toward the outside. However, a small amount of muddy water (cooling water mixed with dust) leaks out from under the bellows 5, but most of them are sucked through the pipes 12 and 13 connected to the brushes 6 and 7 to collect the muddy water recovery device. Recovered in 14. The treatment of muddy water leaking from the brush 7 will be described later.

A piping system for supplying fresh water will be described with reference to FIG.
An original pipe 11 is connected to the pump in the fresh water supply device 10, and a T joint 15 is connected to an appropriate position of the original pipe 11. A cooling water pipe 16 is connected to one side of the T joint 15, and a cleaning water pipe 21 is connected to the other side of the T joint 15. A valve 31 is provided on the original pipe 11 in front of the T-joint 15 so that the total amount of supplied water can be adjusted. The original pipe 11 ahead of the valve 31 may be attached to and detached from the valve 31 by a detachable coupler 18, or may be directly connected to the pipe without using the detachable coupler.

  The valves 32 and 33 in the cooling water pipe 16 are provided to control the supply and discharge of the cooling water supplied to the inside of the cover 4 (around the cutter blade 3) and to adjust the amount of the cooling water.

  The cleaning water pipe 21 is connected to the T joint 15 via a valve 34. The cleaning water pipe 21 is bifurcated on the downstream side, and is connected to a long first pipe 22 and a short second pipe 23. The first pipe 22 and the second pipe 23 may be detachable from the cleaning water pipe 21 via the detachable coupler 24, or may be directly connected to the pipe without using the detachable coupler.

The first pipe 22 is provided with an on-off valve 35 so that injection of high-pressure cleaning water can be stopped. An on / off valve 36 is provided in the second pipe 23 so that the injection of high-pressure cleaning water can be stopped.
In FIG. 2, the nozzle 26 is attached to the tip of the first pipe 22, but the nozzle 26 is also attached to the tip of the second pipe 23. That is, it is selectively attached to the first pipe 22 and the second pipe 23.

  Although the first pipe 22 and the second pipe 23 have different heights from the road surface, both are provided for injecting high-pressure water at the base of the brush 7, and are adjusted according to the cutting depth of the cutter blade 3. The nozzle 26 may be attached by selecting the one that allows high pressure water to be easily applied to the base of the brush 7.

Next, the mounting position adjusting mechanism 40 for the nozzle 26 will be described.
The attachment position adjusting mechanism 40 allows the fixed position of the nozzle 26 to be freely changed by a magnet.

As shown in FIG. 4, a metal magnet box 41 is attached to an appropriate position on the side surface of the vehicle body 1, and a plate-shaped magnet 42 is inserted into the magnet box 41, thereby forming a magnetic attachment box.
On the other hand, as shown in FIG. 5, a mounting member 45 is fixed to an appropriate place of the first pipe 22, and a magnetic sticking plate 46 is vertically formed at the tip thereof. A magnetized plate 47 of the same size may be provided next to the magnetized plate 46. This constitutes a magnetically bonded plate.

As shown in FIG. 6, if the magnetized plates 46 and 47 are magnetized by the magnet 42, the first pipe 22 having the nozzle 26 at the tip can be held, and the magnetized plates 46 and 47 can be moved vertically and horizontally. It can also be rotated.
Therefore, it is possible to change the position of the nozzle 26 vertically and horizontally, and to variably adjust the angle toward the brush 7.

In the road surface cutter A of the present invention, cutter blades 3 having different sizes can be selected and attached. For example, a diameter up to 26 cm or a diameter up to 40 cm can be arbitrarily used. In that case, the cover 4 having a different size is replaced.
Then, the arrangement positions of the suction pipe 13 and the brush 7 are changed, but if the attachment position adjusting mechanism 40 is provided, the position of the nozzle 26 and the spray angle of the cleaning water can be easily changed to the optimum position each time. Because it can be done, it is very convenient in practice.

The usage method will be described with reference to FIG.
Since cooling water is supplied to the inside of the cover 4 through the cooling water pipe 17, the cutter blade 3 cuts the road surface while being cooled by the water. Leakage of the supplied water to the outside is almost prevented by the bellows 5, but some leakage occurs. The leaked muddy water is sucked by the pipe 13 connected to the brush 7, but still some leakage occurs. When cleaning water is sprayed from the nozzle 26 toward the base of the brush 7, muddy water is returned to the inside of the brush 7, so that almost the entire amount is sucked by the pipe 13. Since the cleaning water is clean water, even if it remains on the road surface and it dries, the road surface does not get dirty.

The advantages of this embodiment are summarized as follows.
(1) Since the cleaning can be performed while cutting, the cutting process can be shortened. Further, in a season such as summer when the road surface temperature is high, water is thirsty and white streaks are formed after cutting and it takes a long time to wash after cutting, but the road surface cutter of the present embodiment does not dry it and can perform a clean work.
(2) Conventionally, three pieces of a cutting water hose, a sludge drainage hose and a cleaning hose were used, but according to the present invention, two pieces (cutting water / cleaning 17, 17, sludge drainage 12, 13) are used. Since it can be constructed with a hose, stumbling accidents caused by a third party can be reduced. Also, setup becomes easy.
(3) Even if cleaning is required suddenly during cutting, cleaning can be performed immediately by replacing the attachment of the cleaning nozzle on the spot without returning to the vehicle and preparing for cleaning.
(4) In the embodiment using the engine-type washing machine, since the cooling water pipe and the cleaning water pipe have water pressure, it is possible to cut even when the vehicle is down at the time of cutting on a slope.

  Each pipe used in the above embodiments may be replaced with a hose, and the “boss” in the claims is also interpreted to the same effect.

A Road surface cutter 1 Vehicle body 2 Wheel 3 Cutter blade 4 Cover 5 Bellows 6 Brush 7 Brush 14 Tank 16 Cooling water pipe 17 Cooling water pipe 21 Cleaning water pipe 22 First pipe 23 Second pipe 26 Nozzle

Claims (3)

A road surface cutter for cutting road surfaces,
The road surface cutter is equipped with a rotary drive source, a fresh water supply device, and a muddy water recovery device inside the vehicle body, and liquid-tightly surrounds the cutting drive shaft for rotating the cutter blade and the cutter blade outside the vehicle body. Equipped with a cover,
The cover comprises a substantially semi-circular cover body that surrounds the cutter blade, and a bellows that is attached to the lower end of the cover body and is in contact with the road surface.
At the rear of the cover, a brush with a muddy water suction pipe is installed,
Road cutter cleaning water nozzle from the outside of the front Symbol bellows pushes mud water toward the inside of the brush, characterized in that <br/> installed in a position for injecting cleaning water to the brushes. The cleaning water nozzle, road cutter according to claim 1, wherein the by Chigae the height from the road surface provided with a plurality. The road surface cutter according to claim 2, further comprising an attachment position adjusting mechanism that fixes the cleaning water nozzle to a vehicle body and can change the arrangement position of the cleaning water nozzle.

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