JPS605059Y2 - Rut repair and leveling equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a rutting repair and leveling device that is used by being attached to the screed of an asphalt finisher.

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 an efficient and economical repair device to deal with this problem.

When repairing and leveling ruts using an asphalt finisher, which is an existing paving machine, as shown in Figure 6A, the ruts and depressions are curved as shown in Figure 6, which is a special feature of the flat surface. Since backfilling has the disadvantage of creating depressions after compaction, it is hoped that this difficulty will be resolved.

Therefore, this invention was developed in view of the above-mentioned actual situation, and it is possible to eliminate the above-mentioned difficulties and repair rutted areas efficiently and economically. The purpose is to provide.

Next, the structure and operation of this invention will be explained with reference to the drawings.

As shown in Fig. 1, 1 is a blade that is almost out of the way with the screed 2 and is inclined slightly forward, and has a pair of left and right chevron-shaped portions 1 at its lower end.
a are provided at intervals.

A heater pipe 3 is welded to the chevron-shaped portion 1a to form a chevron-shaped covering portion, and a burner 4 is provided thereon.

Reference numeral 5 designates end plates provided parallel to the leveling direction on both sides of the rear of the blade 1, and a ski 6 extending forward is provided at the lower end of the end plate 5.

The tip of this ski 6 is curved 6b.

Reference numeral 6a denotes a pair of left and right skis protruding from the rear side of the middle shaft of the blade 1, which are connected to both ends of the left and right heater pipes 3 as shown in FIG.

This ski 6.6a is located below the lower end of the heater pipe 3, and the thickness of the ski 6.6a is preferably the same as the particle diameter of the asphalt mixture 7, for example, about 3 m/rp to 7 m/m.

Reference numeral 7 denotes a receiving plate provided above each ski 6.6a via a pressing member such as a pressing machine 8, a jack or a cylinder.

Reference numeral 9 denotes a mixture removal bottom plate protruding from the center front side of the blade 1, and has a width equal to the distance between both ends of the left and right pipes 3.

10 is a chain provided on the blade 1, and 11 is a fastening member provided on the receiving plate 7.

The mountain shape of the leveling portion may be curved, or may be formed from left and right inclined surfaces, or may be horizontal at the center and inclined at the left and right sides.

Therefore, in order to attach this invented device to the screed 2,
The screed 2 is placed on the receiving plate 7 with the blade 1 positioned in front of the screed 2.

Next, the blade 1 is connected to the front side of the screed 2 by a chain 10, and the receiving plate 7 and the rear side of the screed 2 are connected by a fastening member 11.

If the asphalt finisher 12 is moved forward with the load of the screed 2 applying appropriate ground pressure to the skis 6.6a and the heater pipe 3 via the bullets 8, the asphalt mixture 7 will be transferred to the transfer device. 13, and is discharged from the discharge port 14 into the end plate 5 in front of the blade 1, and is heaped up into the rutted depressions while being sent left and right by the screw 15.

In this case, the mixture 7 is prevented from falling in the central space between the left and right depressions A by a bottom plate 9, as shown in FIG.

At the same time, the asphalt mixture 7 is heaped up into the rutted depressions A and E in the shape of a mountain by means of the heater pipe 3 in the mountain-shaped paving section, as shown in FIG. 6C.

In this case, a heater pipe 3 is attached to the lower end of the blade 1, and since this heater pipe 3 is heated by the flame of the burner 4, the asphalt mixture 7 is heated by the heater pipe 3, as shown in FIG. The curved surface allows it to be spread smoothly without rubbing.

In addition, as the asphalt mixture 7 is being cut by the four skis 6.6a, the heater pipe 3 is located above the road surface 2 by the thickness of the skis 6.6a, as shown in Fig. 6C. The asphalt mixture 7 is leveled in the shape of a mountain while forming a rising portion 16 equal to the thickness of the ski 6.6a.

Furthermore, since the blade 1 is constantly pressed downward by the bullet 8, the ski 6.6a that is in contact with the ground moves along the unevenness of the road surface 2, and the asphalt mixture 7 has an overall uniform rise height and ridge. Since the ground is leveled at the ascending height, after compaction, the backfill construction is excellent, with the road surface being flat as shown in Figure 6.

Such a rising height by the ski 6.6a provides a margin for leveling and makes the leveled surface even more beautiful.

Alternatively, instead of providing the pipe 3, the lower end of the blade 1 is bent backward in a curved shape to form a horizontal portion 1a, and this horizontal portion 1a is bent into a chevron shape to form a chevron shape. A covering portion 1b may also be formed.

The pipe 3 may be welded to the rear of the lower end of the blade 1 as shown in FIG. 5A, or may be welded to the lower end of the blade 1 as shown in FIG. 5B.

Further, the blade 1 may have a smooth curved surface by increasing the plate thickness and forming a curved portion at the lower end.

Since this invention is made as described above, it is possible to level a mountain-shaped paving structure having rises and ridges of almost uniform height from the road surface by simply attaching it to the asphalt finisher and moving the asphalt finisher forward. Since the asphalt can be immediately compacted using compaction rollers, the ideal compaction construction shown in Figure 6 can be carried out while the asphalt is still heated.

Further, since the asphalt mixture 7 is placed in the mold of the blade 1 and the end plate 5 and leveled, compaction work can be carried out quickly by simply leveling the area where both ends are covered manually.

Furthermore, since ground pressure is applied to the blade 1 by a pressure member such as the bullet 8, the flatness is good and the surface texture is dense, resulting in a uniformly smooth finish.

More specifically, for rut repair, the applicant
First, the asphalt mixture 7 discharged from the dump truck was leveled and compacted by hand alone, but this required a great deal of labor and a long construction period.

It is difficult to extend this 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 cause poor compaction.

By the way, construction using only human labor costs 2.85 million yen and the total number of workers is 2.
There were 11 people, and the amount of holes per day was 20 L.

Therefore, the applicant attempted to level the asphalt mixture 7 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.

Furthermore, as shown in FIG. 6B, 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 ruts is further leveled by a chevron-shaped bedding section attached to the blade of a motor grader. An attempt was made to form a mountain-shaped paving area, level it, and then maintain it manually, but this required a total of 140 people and a construction amount of 40 tons per day under the same conditions as when using only human power, but the asphalt The construction costs were extremely high because two large machines were required: a finisher and a motor grader.

Therefore, a blade 1 having a chevron-shaped paving part is attached to the screed of an asphalt finisher, and the paving mixture is spread on the rutted part while applying ground pressure to the blade 1 whose leveling part is chevron-shaped. The construction cost was 218.
The project costs 33,000 yen, requires a total of 33 people, has a construction volume of 100 tons per day, and has a construction period of 1/3 that of manual labor alone, resulting in excellent work efficiency and economic efficiency.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, with the first being a perspective view and the second being a perspective view.
The figure is a vertical side view of the same as above, Figure 3 is a vertical front view of the same as above, Figure 4 is a plan view, Figures 5 A, B, and C are cross-sectional views of the leveling part.
FIGS. 6A, B, C, and D are explanatory diagrams. 1...Blade, 2...Screed,
3...Pipe, 4...Burner, 5.
·····end plate.

Claims (1)

[Scope of utility model registration request] In a rut repair and leveling device that is attached to the screed of an asphalt finisher, a pair of left and right chevron-shaped paving sections are provided at intervals at the lower end of the blade attached to the screed, and the ground pressure is applied to the blade. A rut repair and leveling device characterized by being provided with a pressure member that applies pressure.