JPS6352168B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a rut repair and leveling method that is used by being attached to a machine such as an asphalt finisher equipped with a device for transferring an asphalt mixture. It is something.

[Conventional technology]

In recent years, with the rapid increase in the number of automobiles and the increase in the size of automobiles, the degree of damage to pavement, particularly due to rutting, has become severe, and there is a strong need for efficient and economical repair equipment to deal with this problem.

Since the rutted depression A is a curved surface as shown in Figure 7, it is necessary to use an existing paving machine such as an asphalt finisher to create a completely flat backfill surface as shown in Figure 7A. If this is done, there is a problem in that a depression as shown in FIG. 7B will be formed on this backfilling surface after rolling.

West German Patent Publication No. 2823727 has been proposed as a solution to these difficulties.

[Problem that the invention seeks to solve]

However, the above-mentioned conventional technology has a problem in that it is difficult to heat and spread the material neatly into a mountain shape and then repair it by rolling pressure to finish it into a flat surface.

Therefore, the present invention provides a method for repairing and leveling ruts, which uses a chevron-shaped blade to level the rutted area in a chevron-shaped manner, and then immediately finishes the area into a clean, flat surface.

[Means for solving problems]

In the present invention, the leveling part has a mountain shape and a heater pipe is arranged along the mountain shape of the leveling part to apply ground pressure to the blade which forms a curved heating part on the leveling surface. Alternatively, by applying vibration, the paving mixture unit supplied to the depressions of the ruts is leveled in a mountain shape by the heated curved surface of the curved heating unit, and a mountain-shaped leveling surface is heated and formed, and this heating This is a rut repair and leveling method that is characterized by continuously rolling the mountain-shaped leveled surface into a flat surface.

〔Example〕

The construction method of the present invention will be explained below with reference to the accompanying drawings.

1 is a machine equipped with a transfer device 3 for asphalt mixture 2 such as an asphalt finisher, and a slightly forward-inclined blade is connected to the rear of the discharge port 4 of the asphalt mixture 2 via a connecting member such as arms 5 and 5a. 6 is installed. Arm 5,
5a, an inner arm 5a is slidably inserted into the outer arm 5.

Reference numeral 7 denotes a pressing machine which connects the outer arm 5 and the inner arm 5a and constantly presses the blade 6 downward with an appropriate ground pressure. A jack, cylinder, etc. may be used instead of this bullet.

Reference numeral 8 denotes a mountain-shaped leveling portion formed by fixing a heater pipe 9 to the mountain-shaped portion of the blade 6, and burners 10 are provided on both sides of the heater pipe 9. The mountain-shaped shape of the leveling portion 8 may be curved, formed from left and right inclined surfaces, or formed with a horizontal center and inclined left and right sides.

End plates 11 are provided on both sides of the blade 6 in parallel to the leveling direction, and the lower end of the end plate 11 is provided at the same position as the lower end of the heater pipe 9.

A ski 12 is provided at the lower end of the end plate 11 in the same direction as the end plate 11 and has a curved tip, and is located below the lower end of the heater pipe 9. The thickness of the ski 12 is determined by the diameter of the particles of the asphalt mixture 6, for example, 3 m/m to 7 m/m.
m rank is desirable.

Reference numeral 13 denotes a fastening part that connects the central blade 6 and the left and right blades 6 that are divided. Arms 5, 5a and a bullet 7 are attached to the central blade 6, and a burner 10 is attached to the left and right blades 6. However, it is possible to replace the left and right blades 6 with blades having an appropriate width depending on the width of the rutted portion.

Reference numeral 14 denotes a cylinder for lifting and lowering the blade 6, whose upper and lower ends are pivotally connected, and the pivot portion 1 of the arm 5
The blade 6 is raised and lowered around the blade 5.

Therefore, if the burner 10 is ignited and the machine 1, such as an asphalt finisher, is moved forward with the ski 13 in contact with the ground with an appropriate ground pressure due to the elastic force of the pressing projectile machine 7, the asphalt mixture 2 will be It is discharged from the discharge port 4 into the end plate 11 in front of the blade 6, and is piled up in the rutted depression.

At the same time, the asphalt mixture 2 is heaped up in the rutted depressions in the shape of a mountain by the heater pipe 9 of the mountain-shaped leveling section 8, as shown in FIG. 7C.

In this case, a heater pipe 9 is attached to the lower end of the blade 6, and since this heater pipe 9 is heated by the flame of the burner 10, as shown in FIG. The heated curved surface allows the product to be spread smoothly and without rubbing.

In addition, as the asphalt mixture 2 is cut by the left and right skis 12 and the heater pipe 9 is located above the road surface 2 by the thickness of the skis 13, the asphalt mixture 2 is cut as shown in FIG. 7C. is the rising part 1 by the thickness of the ski 12
It is leveled into a mountain shape while forming 6.

Furthermore, since the blade 6 is constantly pressed downward by the bullet 7, the ski 12 in contact with the ground moves along the unevenness of the road surface, and the asphalt mixture 2 has an overall uniform rising height and rising height. Since the ground is leveled, it is possible to perform an ideal backfill lathe that is flat with the road surface as shown in Fig. 7D after compaction.

Such a rising height by the skis 12 provides a margin for leveling, resulting in a clean leveled surface.

Note that when installing this device on an asphalt finisher, it is necessary to remove the screed. In addition, when this device is mounted on the left and right sides as shown in the plan view of Fig. 4, it is preferable to install a chute or screw that sends the asphalt mixture 2 left and right, and it is also recommended to extend the bottom plate 17 for removing the mixture in the center of the chute or screw. desirable.

In addition, instead of providing the pipe 9, as shown in FIGS. 5 and 6C, the lower end of the blade 6a is bent backward to form a horizontal portion 6b, and this horizontal portion 6b is bent into a mountain shape. Alternatively, instead of applying ground pressure to the blade 6a, a vibrator 18 may be provided to apply vibration.

In addition, the pipe 9 is connected to the blade 6 as shown in FIG. 6A.
It may be welded to the front of the lower end of the blade 6a, or it may be welded to the lower end of the blade 6a as shown in FIG. 6B. Further, the blade 6a may be made thicker and have a curved portion at the lower end to provide a leveled curved surface.

Since the present invention is constructed as described above, it is possible to advance the machine 1, such as an asphalt finisher equipped with the mixture transfer device 3, and immediately compact the material with a compaction roller. As the asphalt is advanced, a chevron-shaped leveling surface as shown in FIG. 7C is formed, so that the ideal compaction turning shown in FIG. 7D can be performed immediately while the asphalt is heated.

Further, since the asphalt mixture 2 is spread by fitting it into the mold of the blade 6 and the end plate 11, compaction work can be carried out quickly by manually leveling the leveled portions at both ends.

Also, since ground pressure is applied to the blade 6 by a pressure member such as the bullet 7, the flatness is good and the surface texture is dense and uniformly smooth.

To be more specific, in order to repair ruts, the applicant first leveled and compacted the asphalt mixture 2 discharged from a dump truck by hand alone, but this required a lot of labor and took a long time. It took a long time to complete. It is difficult to carry out such a long construction period because the work requires the closure of vehicular traffic.
Furthermore, it takes too much time for the asphalt to be compacted manually after it is discharged from the dump truck, which causes the asphalt to cool and make compaction difficult.

By the way, the labor cost for manual turning is 2.85 million yen, and the total number of workers is 2.85 million yen.
The turning cost was 20 tons per day for 121 people.

Therefore, the applicant attempted to level the asphalt mixture 2 discharged from a dump truck using a motor grader, but in this case, it is necessary to cleanly cut and prepare both ends of the rutted portion after compaction. There is also the trouble of manually scraping or raising the leveled surface depending on the unevenness of the road surface. Furthermore, as shown in FIG. 7B, a depression is formed after rolling, so this depression must be further backfilled.

In order to facilitate such manual maintenance, an asphalt finisher is used, and the asphalt mixture discharged from the asphalt finisher along the rutted area is further processed by a chevron-shaped leveling unit attached to the blade of a motor grader. An attempt was made to level the ground to form a mountain-shaped leveled section and maintain it manually after leveling, but this required a total of about 140 people per day under the same conditions as in the case of manual labor alone. The turning amount was 40 tons, but the construction cost was extremely high because it required two large machines: an asphalt finisher and a motor grader.

Therefore, a blade 6 having a chevron-shaped leveling part is attached to an asphalt finisher, etc., and the leveling part 8 is used to mix pavement while applying ground pressure or vibration to the blade 6 having a chevron-shaped leveling part. Since 2 was leveled in the rutted area A, the construction cost was 2,180,000 yen, the total number of workers was 33, and the amount of turning work per day.
100t, the construction time is 1/3 of that of manual labor, which has excellent workability and economic efficiency.

〔Effect of the invention〕

In the present invention, ground pressure or vibration is applied to the curved surface heated by a heater pipe, so that the paving mixture supplied to the depressions of the ruts is heated and at the same time is leveled on the curved surface, thereby preventing it from being rubbed. It is spread smoothly and heated. Then, it is finished immediately by rolling pressure repair in a heated state,
As a result, the finished surface will be a flat, well-compacted road surface. In addition, compared to the method of leveling in a mountain pattern, heating it with a heater device, and then rolling it down, it is possible to finish the work more quickly and the device can be made smaller.

[Brief explanation of the drawing]

Fig. 1 is a perspective view, Fig. 2 is a longitudinal sectional side view of the same, Fig. 3 is a longitudinal sectional front view of the same, Fig. 4 is a plan view, Fig. 5 is a perspective view showing another embodiment, Fig. 6 A, B and C are cross-sectional views of the leveling portion, and FIGS. 7A, B, C, and D are explanatory views. 2... Paving mixture, 3... Transfer device, 4... Discharge port, 5... Arm, 6... Blade, 9... Heater pipe.

Claims (1)

[Claims] 1. The leveling part has a mountain shape, and a heater pipe is arranged along the mountain shape of the leveling part to form a curved heating part in the leveling part. While applying ground pressure to the blade, or vibrating. The paving mixture supplied to the depressions of the ruts is leveled in a mountain shape by the heated curved surface of the curved heating section to form a mountain-shaped leveled surface by heating, A rut repair and leveling method characterized by continuously rolling the leveled surface to make it flat.