JP2022164426A - Pavement surface grinding machine and pavement surface repair method - Google Patents

Abstract

To provide a pavement surface grinding machine capable of appropriately grinding a pavement surface laid in contact with a structure such as concrete.SOLUTION: A grinding machine comprises: a vehicle (2); a horizontal rotary shaft (11) with one end protruding from the side of the vehicle (2); and a grinding body (12) provided on the horizontal rotary shaft (11). The grinding body (12) is provided with a plurality of grinding pieces (19), and becomes a cylinder as a whole when rotating. The side surface of this cylinder cuts pavement surfaces. In the present invention, the grinding body (12) is configured such that the end corresponding to the bottom surface of the cylinder does not protrude outward from the grinding pieces (19) located farthest from the vehicle (2).SELECTED DRAWING: Figure 1

Description

(1) Test date June 19, 2020 Test location Taiemon Shinden, Chuo-ku, Niigata City, Niigata Prefecture Person who conducted the test Heatlock Industry Co., Ltd. ( 2) Document submission date: November 6, 2020 Document submission destination: National Land Technology Research Center Submitter: Heatlock Industry Co., Ltd. (3) Construction date: March 18-20, 2021 Construction Location: Ryugashima, Chuo-ku, Niigata City, Niigata Prefecture, and Kagetokoro, Chuo-ku, Niigata City, Niigata Prefecture.

TECHNICAL FIELD The present invention relates to a paved road surface grinding apparatus for grinding the surface of a paved road surface when repairing a deteriorated paved road surface, and a paved road surface repair method.

When repairing a deteriorated pavement road surface, it is necessary to remove the surface of the deteriorated pavement road surface and pave with a new pavement material. For example, as a device for removing the surface of a paved road surface that has deteriorated, a road surface cutting device having a rotating body provided with a plurality of cutter bits is well known. The rotating body is rotated to hit the paved road surface with a cutter bit to crush the surface and remove the deteriorated pavement material. At this time, since the paved road surface is crushed by impact when scraping the paved road surface, the paved road surface may be slightly damaged, and a problem may arise in the adhesive strength with the new pavement material.

In response to this, the present applicant has proposed a paved road surface grinding apparatus for grinding the surface of a paved road surface, as disclosed in Patent Documents 1 and 2 and the like. In the pavement road surface grinding apparatuses described in these documents, a plurality of pieces to be ground are provided on a rotating body. These ground pieces are sintered metal containing diamond particles. When the rotating body is rotated, the trajectories drawn by the plurality of grinding pieces become cylindrical. The side surface of this cylinder grinds the paved road surface. That is, grind. Therefore, the paved road surface is scraped off smoothly. The new paving material adheres strongly without damaging the paved road surface.

JP 2017-186793 A JP 2015-214810 A

By the way, some paved road surfaces are paved in contact with structures made of concrete or the like. For example, there is a paved road paved against concrete curb blocks. On the pavement road in contact with such a structure, the pavement at the boundary with the structure may deteriorate and a gap may occur between the pavement and the structure. Seeds will enter the cracks and weeds will grow, so repair is necessary. When repairing a paved road surface in contact with such a structure, the paved road surface in the vicinity of the structure is removed by grinding, and then new pavement material is filled to fill the gaps. By the way, when removing the paved road surface in the vicinity of the structure by grinding, the paved road surface in the vicinity of the structure must be properly removed without damaging the structure. However, it is difficult for the surface grinding apparatuses described in Patent Documents 1 and 2 to grind the pavement near the structure.

The present invention provides a paved road surface grinding apparatus capable of appropriately grinding the paved road surface in the vicinity of the structure without damaging the structure, which is laid in contact with a structure made of concrete or stone. It is intended to Another object of the present invention is to provide a method for repairing a paved road surface, which can appropriately repair the paved road surface laid in contact with a structure.

The present invention includes a vehicle traveling on a road surface, a horizontal rotating shaft provided horizontally in the vehicle and having one end protruding from the side of the vehicle, a motor or engine for driving the horizontal rotating shaft, and a horizontal rotating shaft. The object is a pavement road surface grinding device comprising a grinding body that rotates integrally with a horizontal rotating shaft provided at one end of the. This grinding body is provided with a plurality of grinding pieces, and when the grinding body rotates, the trajectory drawn by the plurality of grinding pieces becomes a cylinder, and the side surface of the cylinder cuts the paved road surface. In the present invention, the grinding body is constructed so that when the grinding body rotates, the end corresponding to the bottom surface of the cylinder is not provided with a portion protruding outward from the grinding piece located farthest from the vehicle. .

According to the present invention, when the grinding body rotates into a cylindrical shape, there is no portion projecting outward from the grinding piece at the end corresponding to the bottom surface of the cylinder. Therefore, if the bottom surface of this cylinder is brought close to the structure, the paved road surface can be ground to the limit of the vicinity of the structure without damaging the structure. Therefore, the paved road surface in contact with the structure can be easily repaired.

1 is a perspective view showing a paved road surface grinding apparatus according to an embodiment; FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the grinding apparatus of the paved road surface based on this Embodiment, (A) is a top view of a grinding apparatus, (B) is a perspective view of the drum which comprises a grinding body, (C) is a perspective view of a ground piece, and (D) is a front view of a ground body. It is a figure explaining the repair method of the pavement road surface based on this Embodiment, (A) is front sectional drawing which shows the curb block and the deteriorated sidewalk paved in contact with this, (B) is a deteriorated FIG. 2C is a front cross-sectional view showing a sidewalk and a grinding body of a paved road surface grinding apparatus according to the present embodiment for grinding a deteriorated portion, and (C) thereof is a front cross-sectional view showing curb blocks and a repaired sidewalk.

This embodiment will be described. A paved road surface grinding apparatus 1 according to the present embodiment comprises a vehicle 2 and a grinding mechanism 3 mounted on the vehicle 2, as shown in FIG. The vehicle 2 is relatively small and self-propelled by an engine (not shown). A steering wheel 5 is operated to drive. The vehicle 2 is provided with two front wheels 6 , 6 and two rear wheels 7 . Although not shown in detail in FIG. 1, the frame or chassis of the vehicle 2 is provided with a height adjustment mechanism for raising and lowering the vehicle height, and front wheels 6 and rear wheels 7 are provided through this height adjustment mechanism. ing. By raising and lowering the vehicle height, it is possible to raise and lower the grinding mechanism 3, which will be described below, so that the paved road surface can be ground.

The grinding mechanism 3 includes an engine 9 provided on the vehicle 2 , a horizontal rotation shaft 11 provided on the vehicle 2 , and a grinding body 12 provided on the horizontal rotation shaft 11 . A drive pulley 14 is provided on the engine 9, and a driven pulley 15 is provided on the horizontal rotary shaft 11. The drive pulley 14 and the driven pulley 15 are wound by a V-belt 16. As shown in FIG. Therefore, when the engine 9 is driven, the horizontal rotary shaft 11 rotates and the grinding body 12 rotates.

In this embodiment, the grinding body 12 is characterized by its arrangement and structure. The grinding body 12 is arranged on the side of the vehicle 2 as shown in FIG. 2(A). For this position, the horizontal pivot 11 projects slightly from the side of the vehicle 2 at one end. A grinding body 12 is provided at one of the protruding ends. Because of this arrangement, when the vehicle 2 moves and grinds the paved road surface with the grinding body 12, the front wheels 6, 6 and the rear wheels 7, 7 of the vehicle 2 are placed in grooves formed on the paved road surface by grinding. You can run without getting stuck. Further, since the grinding body 12 is provided on the side of the vehicle 2, the grinding body 12 can be brought as close to the structure as possible when grinding the paved road surface laid in contact with the structure.

The grinding body 12 according to this embodiment, as shown in FIG. 1, comprises a drum 18 and a plurality of grinding pieces 19, 19, . there is The drum 18, as shown in FIG. 2B, is a cylinder having a predetermined thickness and having a bottom portion 21. As shown in FIG. A shaft hole 22 is formed in the bottom portion 21 as shown in FIGS. 2B and 2D. The shaft hole 22 is a hole into which the horizontal rotary shaft 11 is inserted. Although not shown in the drawing, one end of the horizontal rotary shaft 11 has a shape in which a portion of a columnar shaft is partially cut off from both side surfaces thereof. When the end portion of the horizontal rotary shaft 11 formed in this way is inserted into the shaft hole 22, the rotary force is transmitted without loss of rotary force like a so-called rotary shaft with a key.

As shown in FIG. 2C, the grinding piece 19 provided on the drum 18 has a leg 24 for fixing to the drum 18 and a leg 24 provided on the leg 24. and a grinding portion 25 . The grinding portion 25 is formed in an arc shape with a predetermined width, and grinds the paved road surface at the top thereof. The grinding piece 19 is formed by sintering a metallic material containing diamond particles. Therefore, the paved road surface can be stably ground over a long period of time without being easily worn.

In the grinding body 12 according to the present embodiment, as shown in FIGS. 1 and 2D, a plurality of such grinding pieces 19, 19, . . . are fixed to the drum 18 by welding. ing. The plurality of grinding pieces 19, 19, . However, the plurality of grinding pieces 19, 19, . . . .

Such a grinding body 12 is provided on the horizontal rotary shaft 11 as described above. Fixing the grinding body 12 to the horizontal rotary shaft 11 is a nut 27 as shown in FIG. A male thread is formed at the end of the horizontal rotary shaft 11 , and a nut 27 is screwed to fix the grinding body 12 to the horizontal rotary shaft 11 . By the way, in this embodiment, both the nut 27 and the end portion of the horizontal rotary shaft 11 having the male thread are completely housed in the drum 18 . In other words, when the grinding body 12 rotates, there is no portion protruding sideways from the grinding piece 19 located farthest from the vehicle 2 . This is one feature of the grinding body 12 according to this embodiment.

Although not shown in FIG. 1, such a grinding body 12 is provided with a cover, and the cover is provided with a suction device for sucking dust. Therefore, even if the paved road surface is ground by the grinding body 12 and dust is generated, the surrounding environment is not polluted.

A repair method for repairing a paved road surface using the paved road surface grinding apparatus 1 according to the present embodiment will be described. FIG. 3A shows a curb block 30, a sidewalk-side paved road surface 31 paved in contact with the curb block 30, and a road-side paved road surface 32 similarly paved in contact with the curb block 30. It is shown. The paved road surface 32 on the roadway side is exposed to the wind and rain for a long period of time and deteriorates, and a gap 35 is formed between the paved road surface 32 and the curb block 30 . Weeds 36 grow in this gap 35 . Such a paved road surface 32 on the roadway side is repaired.

Weeds 36 are pulled out. Next, a grinding step is performed in which the paved road surface 32 on the roadway side in which the gap 35 is formed is ground by a grinding means to a predetermined width and a predetermined depth. Specifically, do the following: As shown in FIG. 1, in the paved road surface grinding apparatus 1 according to the present embodiment, the engine 9 is driven to rotate the horizontal rotary shaft 11 and the grinding body 12 . Then, the height of the front wheels 6, 6 and the height of the rear wheels 7, 7 are adjusted by the height adjusting mechanism to lower the vehicle height. As shown in FIG. 3B, the grinding body 12 is brought into contact with the paved road surface 32 on the side of the roadway. That is, grind. The vehicle 2 is driven while operating the handle 5 (see FIG. 1), and the paved road surface 32 on the roadway side is ground by the grinding body 12 as shown in FIG. 3B. As described above, the grinding body 12 has no portion protruding laterally beyond the grinding pieces 19, 19 located farthest from the vehicle 2. As shown in FIG. Accordingly, the grinding body 12 can be brought as close to the curb block 30 as possible. As a result, the roadway-side paved road surface 32 in contact with the curb block 30 can be ground to a predetermined width and depth. Note that the width of the groove 38 formed by grinding is substantially equal to the width of the ground body 12 . The width of the grinding body 12 can be, for example, about 1 to 20 cm, more preferably 3 to 10 cm.

The grooves 38 formed by grinding are filled with new pavement material 39 as shown in FIG. 3C. Complete pavement repairs. The pavement material 39 may be a mixture of asphalt and aggregate, or may be concrete.

Various modifications are possible for this embodiment. For example, although the grinding body 12 has been described as being rotationally driven by the engine 9, it may be driven by an electric motor. Also, although the vehicle 2 has been described as having four wheels, it may have three wheels or five or more wheels. Furthermore, the vehicle 2 may be self-propelled by an electric motor.

In the repair method for repairing the paved road surface by the paved road surface grinding apparatus 1 according to the present embodiment, which has been described with reference to FIG. However, the sidewalk-side paved road surface 31 may also deteriorate and can be repaired by a similar repair method. Also, the structure in contact with the paved road surface is not limited to the curb block 30 . For example, there are concrete walls and the like as structures. Even a paved road surface that is in contact with a concrete wall can naturally be repaired by grinding the paved road surface in the vicinity of the concrete wall and backfilling with new pavement material. As the new pavement material 39 that fills the grooves 38 formed by grinding, a pavement material having excellent water stopping properties can be employed. Then, not only the seeds but also the water becomes difficult to enter, and weeds can be prevented from growing over a long period of time.

1 paved road surface grinding device 2 vehicle 3 grinding mechanism 5 handle 6 front wheel 7 rear wheel 9 engine 11 horizontal rotary shaft 12 grinding body 14 driving pulley 15 driven pulley 16 V-belt 18 drum 19 grinding piece 21 bottom portion 22 shaft hole 24 leg 25 grinding portion 27 nut 30 curb block 31 sidewalk side paved road surface 32 road side paved road surface 35 gap 36 weeds 38 groove 39 paving material

Claims (4)

A vehicle traveling on a road surface, a horizontal rotating shaft provided horizontally on the vehicle and having one end protruding from a side of the vehicle, a motor or engine driving the horizontal rotating shaft, and the horizontal rotating shaft A grinding body provided at one end of and rotating integrally with the horizontal rotation shaft,
The grinding body is provided with a plurality of grinding pieces, and when the grinding body rotates, the trajectory drawn by the plurality of grinding pieces becomes a cylinder, and the side surface of the cylinder cuts the paved road surface. 1. A paved road surface grinding apparatus, wherein an end portion corresponding to a bottom surface of said cylinder is not provided with a portion protruding outward from said grinding piece located farthest from said vehicle. 2. The paved road surface grinding apparatus according to claim 1, wherein said grinding piece is formed by sintering a metal material containing diamond particles. A repair method for repairing a paved road surface in the vicinity of a structure made of concrete or stone, in which the paved road surface is laid in contact with the structure,
The repair method includes a grinding step of grinding the paved road surface in the vicinity of the structure with a constant width and a constant depth from the structure by a grinding means for grinding the surface of the paved road surface;
and a filling step of filling the grooves formed by the grinding step with pavement material. 4. The method of repairing a paved road surface according to claim 3, wherein said structure is a concrete curb block and said pavement material comprises asphalt and aggregate.

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