JPS607084B2 - Rut repair and leveling method - Google Patents

Description

[Detailed description of the invention] The present invention relates to a method for equalizing the number of rut repairs.

In recent years, with the rapid increase in the number and size of automobiles, pavement damage has become more severe, and maintenance and repair work to deal with the damage has become increasingly difficult.

Under these circumstances, a method of backfilling rutted areas has been proposed and is being implemented as one of the most economical repair methods.

This is due to the wear caused by tire chains and spiked tires during the winter, the concentration of load due to road lane restrictions, the large to medium increase in traffic weight, and the aging of pavement. In order to solve safety and environmental problems such as the rainwater accumulated in these depressions splashing onto the windshield, obstructing visibility, and splashing muddy water onto houses and pedestrians, the ruts caused by the ruts were created. The idea is to backfill depressions efficiently and economically.

However, since the rutted depression 1 is a curved surface as shown in Fig. 10, a paving machine such as an asphalt finisher is used to asphalt mixture as shown in Fig. 10A.
When a rutted area is flattened and leveled as shown in Figure 10B, a problem arises in that a depression 2 is formed on the leveled surface after compaction as shown in Figure 10B.

Therefore, it was found that it was impossible to perform backfilling efficiently and economically using existing paving machines due to the unique characteristic of rutted depressions being curved surfaces.

The present invention has been made in view of the above circumstances, and the present invention is made by rutting a mixture while applying ground pressure through a pressure member or applying vibrations through a vibrator to a play dough whose leveling part is in the shape of a mountain. The present invention provides a rut repair and leveling work that is characterized by leveling the ground in excavated areas, and enables efficient and economical backfilling work.

That is, since the leveling part spreads the mountain-shaped plaid stranded mixture into the rutted part, the mixture is piled up almost symmetrically to the depression shape as shown in Figure 10C, and after rolling,
It is compacted flat as shown in Figure D.

In addition, because the blade is leveled while applying appropriate ground pressure with a pressure member or vibrating with a vibrator, it is evened out at a uniform height from the road surface regardless of the unevenness of the road. This enables flat vertical compaction.

Next, the leveling construction method of the present invention will be explained in detail with reference to illustrative drawings.

As shown in FIGS. 1 and 4, the leveling parts 3 and 3a apply ground pressure to the mountain-shaped blades 4 and 4a through the pressure part cores 5 and 5a while applying the mixture 6 to the rutted part. This is a rut repair and leveling method that is characterized by leveling the level in the first to third stages.
Embodiment 1 shown in the figure, Embodiment 2 shown in FIGS. 4 to 7, and 8
This will be explained in more detail with reference to the embodiments shown in the figures.

Embodiment 1 As shown in the front perspective view of FIG. 1, a forward-tilting system is installed at the rear of the asphalt mixture 6 discharge port 7 of a machine equipped with an asphalt mixture 6 transfer device (not shown) via arms 8, 8a. Attach blade 4.

The arms 8, 8a are inserted into the outer arm 8 so that the inner arm 8a can slide freely therethrough. This outer arm 8 and inner arm 8a
The pressing projector 9 is also connected to the blade 4 to constantly press the blade 4 downward with an appropriate ground pressure. Alternatively, the heater leveling pipe 10 is welded to a suitable mountain shape, such as a mountain shape in which the center is almost horizontal and the left and right sides are inclined.

This heater leveling pipe pipe 01 is provided with a heater such as a burner 1 or a heater. End plates 12 are provided on both sides of the blade 4 and are parallel to the leveling direction. A ski 13 is provided at the lower end of the ski.
Therefore, the skis 13 are located below the heater leveling pipe 10, and the skis 13 are arranged in a manner that corresponds to the particle diameter of the asphalt mixture 6, for example 3 m', as shown in FIG.
It is formed at about m to 7m'm.

In addition, the blade 4 and pipe 10' are fixed 14 so that they can be freely divided into a central part having the arms 8, 8a and the bullet 9, and both side parts having the end plate 12, skis 13, and burner 11. It is possible to adjust the size of the left and right parts depending on the situation.

Reference numeral 15 in the figure is a cylinder for lifting and lowering the blade 4, which is pivotally connected at both ends, and in case of inconvenience, the cylinder 15 is activated and the arms 8, 8a are moved around the pivot wing 6 to be retracted. become a state.

Note that the device shown in FIG.
It is also possible to backfill the left and right rutted areas 1 at the same time by installing it on the left and right sides of the rear. In this case asphalt mixture 6
It is necessary to install a screw or chute to separate the left and right parts. Further, the pressurizing device 5 may be a pond jack, a cylinder, etc. of the ammunition machine 9.

Therefore, if the machine equipped with the asphalt mixture 6 transfer device is moved forward, the asphalt mixture 6 will be transferred to the discharge port 7.
It is discharged into the end plate 12 in front of the blade 4 and piled up on the rutted depression 1.

At the same time, the asphalt mixture 6 is passed through a mountain-shaped heater leveling pipe 1, and the asphalt mixture 6 is piled up in the rutted depression 1 in a mountain shape as shown in FIG. 10C. In this case, a heater leveling pipe 10 is docked at the lower end of the blade 4, and when this pipe IQ is heated by the flames of the left and right burners 11, the asphalt mixture 6 is transferred to the pipe 10 as shown in FIG. The heated part of the curve allows the material to be spread smoothly without any rubbing or rubbing.

In addition, as the asphalt mixture 6 is cut by the left and right skis 3, the asphalt mixture 6 is cut as shown in Figure IQC because the asphalt mixture 6 is above the road surface amount a by the thickness of the heater leveling pipe 1 and the skin ski 13. 6 is leveled in a mountain shape while forming a rising part 7 corresponding to the thickness of the ski 13.

Because the blade 4 is constantly pressed downward by the bullet needle, the ski 13 that is in contact with the ground is on the road surface! As the asphalt mixture 6 progresses following the unevenness of a, the asphalt mixture 6 is leveled out with a constant rise height and bulge height, so after compaction it is flat with the road surface la as shown in Figure 10. Ideal backfilling becomes possible.

Further, the rising height of the skis 13 provides a margin for leveling, resulting in a clean leveled surface. Embodiment B As shown in the front perspective view of FIG. 4, a forward-slanting blade 4a is formed along the side of the screed 19 of the asphalt inisher 18. A chevron-shaped leveling part 3a is formed in the ridge-shaped leveling part 3a, and a heater leveling pipe 10a is welded to this mountain-shaped leveling part 3a.

Burners 11a face both ends of this pipe 10a. End plates 12a parallel to the leveling direction are provided behind both sides of the blade 4a, and skis 13a extending below the screed 19 are provided at the lower ends of the end plates 12a.

A pair of skis 13a also protrudes from the center of the blade 4a at a predetermined interval. A receiving plate 20 of the screed 19 is provided above each of the skis 13a via a pressing machine 9a.

At the rear of the center of the blade 4a, a number board 21 is provided with the same spacing as the center skis 13a.

The screed 19 is placed on the receiving plate 20 with the blade 4a positioned in front of the screed 19 as shown in FIG. Then, the ammunition 9a is compressed by the load of the screed 19, and the ski 13a is brought into contact with the ground with an appropriate ground pressure. Next~
The blade 4a and the screed 19 are connected by a chain 22, and the receiving plate 2
0 and the screed 19 are fastened 23.

As a result, the asphalt mixture 6 falling from the discharge port 7 of the asphalt finisher 18 to the front of the blade 4a becomes as shown in FIG. 6, and is formed into ruts as shown in FIG. It is raised in the shape of a mountain in depression 1.

Also, as in Example 1, asphalt mixture 6 was added to pipe 1.
0a's Homare heating section allows the material to be spread smoothly without any rubbing or rubbing.

Further, the asphalt mixture 6 is cut on both sides of the left and right rutted depressions 1 by the skis 13a, and the center part thereof is cut by the bottom plate 21 as shown in FIG.

In addition, although the ski 13a is in contact with the ground with an appropriate ground pressure due to the load of the screed 19, it moves along the unevenness of the road surface la due to the elastic force of the ammunition 9a, so the height of the ski 13a depends on the thickness of the ski 13a. The height of the bulge due to the leveling portion 3a becomes uniform throughout, and after rolling, a good backfilling condition is achieved as shown in FIG. 10D.

Embodiment m As shown in FIG. 8, the lower end of the blade 4b is bent rearward to provide a horizontal portion 4c, and this horizontal portion 4c is bent into a chevron shape to form a chevron-shaped leveling portion 3b. A vibrator 24 is installed in this horizontal portion 4c.

Also, the end plate 12b and ski 13b are not necessarily required. Therefore, the asphalt mixture 6 falling from the discharge port 7 is leveled into a mountain shape by vibration, and is compacted flat as shown in FIG. 10D.

In addition, in Example 1, the heater pipe 10,
10a may fall behind the lower ends of the blades 4, 4a as shown in FIG. 9A, or may be welded to the lower ends of the blades 4, 4a as shown in FIG. 9B.

Alternatively, the lower end of the blade may be bent in a curved shape as shown in FIG. 9C. Further, the blades 4, 4a may be made of thick plates and have rounded lower ends. Since the present invention is constructed as described above, it is possible to advance a machine equipped with a mixture transfer device, such as an asphalt finisher, and immediately compact it with a compaction roller, as shown in FIG. Since a mountain-shaped leveling surface as shown in c is formed, immediately when the asphalt is heated,
This enables ideal Ogatari construction as shown in FIG. 10D.

More specifically, for rut repair, the applicant
First, the asphalt mixture 6 discharged from the tamp was leveled and vertically compacted by input alone, but this required a great deal of labor and a long construction period.

It would be difficult to extend the construction period to such a period because the work would necessitate a road closure. Furthermore, it takes too much time for the asphalt to be compacted by hand after it is discharged from the dump truck, which causes the asphalt to cool down and result in poor twill compaction. By the way, the construction cost using only human labor was 2.85 million yen, the total number of workers was 121, and the construction volume was 2 piles per day.

Therefore, the applicant attempted to level the asphalt mixture 6 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 due to unevenness of the road surface. Moreover, the first
As shown in Figure 0B, a depression is created after rolling, so this depression must be further backfilled. In order to facilitate such manual maintenance, an asphalt finisher is used to level the asphalt mixture discharged from the asphalt finisher along the rutted area using a chevron-shaped leveling section equipped with a motor grader's blade. An attempt was made to form a mountain-shaped leveling section and maintain it manually after leveling, but this required a total of about 140 people and a construction volume of 4 per day under the same conditions as in the case of manual labor alone. However, the construction cost was extremely high because it required two large machines: an asphalt finisher and a motor grader.

Therefore, a machine equipped with a mixture transfer device, such as an asphalt finisher, is equipped with a flade having a chevron-shaped leveling part, and the leveling parts 3, 3a, 3b apply ground pressure to the blades 4, 4a, 4b, which have a chevron-shape. Since the paving mixture 6 was spread evenly in the rutted area 1 while being applied or by applying vibration, the work efficiency and economy were improved with the construction cost being 2,180,000 yen, the total number of workers being 33, and the amount of work per day being 10. E. Always be excellent.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is a perspective view of embodiment 1, FIG. 2 is a longitudinal sectional view of the same, and FIG. 3 is a longitudinal sectional front view of the same.
FIG. 4 is a perspective view of Embodiment 0, FIG. 6 is a vertical sectional side view of the same,
Fig. 6 is a longitudinal sectional front view of the same as above, Fig. 7 is a plan view, Fig. 8 is a perspective view of embodiment m, Fig. 9 A, B, C is a sectional view of the main part, Fig. 10 A, B, C , D are explanatory diagrams. 3... Leveling section, 4...Blade 5...
Processed parts, 6...Mixture. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10

Claims (1)

[Claims] 1. A method for repairing and leveling ruts, which is characterized in that a paving mixture is leveled in ruts while applying ground pressure or vibration to a blade whose leveling part has a chevron shape.