JPS5955902A - Preliminary road foundation treatment and road foundation cutting apparatus for drilling pavedroad - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a preliminary roadbed treatment method for paved road excavation performed when burying water pipes etc. in a paved road, and a roadbed cutting device used in the preliminary roadbed treatment method. .

Generally, work to excavate a paved road must be done at night when traffic has ceased, so preliminary work is usually done on the first night to make the excavation layer easier to peel off. The method is to excavate the roadbed and perform maintenance work on the 21st night. However, the conventional preliminary roadbed treatment method involves first cutting multiple thin grooves that cut into the pavement layer, then backfilling the cutting grooves into the grooves, and then compacting the cutting grooves in the grooves. There is a known method in which filler such as asphalt is injected into the opening of the kerf, thereby temporarily restoring the area to a state that does not hinder daytime traffic.

However, in this conventional preliminary roadbed treatment method, the work of compacting the cutting gaps in the narrow kerf and the work of injecting the filler into the narrow kerf openings were time-consuming, resulting in a decrease in work efficiency.

The 7th Kuanming of the present application provides a preliminary roadbed treatment method for new paved road excavation which can also improve the efficiency of one-tower work, and the 2nd Kuanming of the present application provides the preliminary roadbed treatment method described above. A roadbed cutting device for use in carrying out the method is provided. The present invention will be described in detail below with reference to the drawings.

First, the first explanation of the present application will be explained. As shown in Figure 1, a plurality of axial kerfs +2i- (Fig. 3 pieces) are cut 1J in parallel with appropriate intervals from each other, thereby forming a plurality of protrusion blocks +11 in the bag layer within the cut width (d) divided by the cut grooves (2)-. ', +I+', and at the same time, the surface layer of the above-mentioned pavement blocks (II', +li') was removed by a slight thickness cut, thereby forming a shallow surface slightly recessed from the surface of the paved road within the above-mentioned surrounding width (d). A recessed portion (3) is formed.

4'4 (21-) spacing or paving blocks (
The width of 1)' should be selected to such an extent that the paving block (1) 2 can easily peel off from the roadbed (4).

Next, as shown in Figure 2, the cutting gap (5) caused by cutting the groove in the previous process is backfilled into the groove (2). I don't do f-te.

Next, a filler (6) made by mixing aggregate such as crushed stone with a binder such as asphalt is filled into the recessed portion (3) before the binder hardens.In this case, the filler (6) )
The upper part of the cutting groove (2) is supported by the cutting groove (51-) which is backfilled until it hardens.
- It does not cave in, and after hardening, the entire filling material (6) becomes seven plate-shaped chambers, forming paving blocks +11', (
1) It is supported on the top surface of the car, thereby making it possible for cars etc. to run during the day.

As the main work on the 2nd day and month after the 18th work or more than one day, please use the packet above! I2 paving block (
1)ll...? is peeled off from the roadbed (4), and then Fl
A groove of a predetermined depth is excavated in the exposed roadbed (4), and a water pipe is buried in the groove.

Next, the roadbed cutting device according to the second aspect of the present invention will be explained. In 'F83i, a self-sufficient trolley (ul) is equipped with a poom-zu on the undulating surface, and the tip of the poom is covered with a roadbed cutting attack J.
3 can be mounted so that it can be moved up and down.

The path @cut H' and eyelid L13+ are as follows. The cab 4t5 frame with its bottom open is the above boom Q2.
It is attached to the tip of the k2 frame, and the left and right of the k2 frame song is my version o5.
1. As shown in Figure Il, both ends of the shaft 061 are rotatably supported by the bearing Q7i through the α path, and
Sprocket ashlS fixed to both shoulders of the shaft 116j
A motor υm installed above the frame 4,
From b9), the rotation is transmitted through the chain, and in this ←''6, three bosses are placed at a predetermined distance from each other in one vertical direction. , fix the inner part of the donut-shaped blade blade disc β to the 7 langes protruding from the circumferential surface of each boss 2 seam with bolts and nuts (c) to attach each cutter disc.
A part of the frame protrudes downward from the lower part of the frame, and a cutter beak and throat for cutting the surface layer of the roadbed are attached between these cutter disk trays.

The cutter e (9, no. q) for cutting the surface layer has a cylindrical base (2) surrounding the upper axis (16) of the cutter disk (3), (-) that rotates around the upper axis (16). It is fixed near the periphery and has a large number of cutting bit decoys protruding from the entire outer peripheral surface of the base slope in an arrangement that does not leave any uncut parts. A sudden pressure is applied to the position to be cut.The means for fixing the cylindrical base <+ (to) and V force is applied to the left end face of the left base body and the right toe of the right base body in Figures 1/-. Screw the cutter disk μs□ directly buried on the left and right sides into the end face, and screw in the bolt holes from the tray, and make small incisions at the right end of the left base and the left end of the right base. Form IF 5Q-1 field and use each small window 3q- to bolt I;114-",
The left and right bases of the 11 cutter discs are screwed onto the end faces of the cutter discs, respectively.

Motor (rule: side is EU and cutter disc □□□'
- and the cutter 4 for cutting the surface layer, rotate the rail and cut the cutter disc (c) into the pavement layer, and when cutting is performed, the bump between the rallies 11ζ cut by each cutter disc (c)- Article? The surface layer portion of the block equipped with ti1 was cut using the above cutter 1 for cutting the surface layer portion. This creates a recess slightly recessed from the pavement.

According to the preliminary roadbed treatment method for paved road excavation written by U'Engineering's first brother Akira, A: lII cutting 1 in the conventional method.
It is possible to omit the troublesome work of compacting the cutting sludge that has been backfilled in the 11j, and it is extremely easy to inject the filler into a wide recess instead of the complicated work of injecting the filler into a narrow kerf in the conventional method. This simplifies the work, and it is possible to realize the same as above with great work efficiency.

According to the roadbed cutting device 6 of No. 2 Komei of the present application, it is possible to cut a plurality of cuts T74 in the pavement layer and at the same time cut the concave portion that gets caught in the cutter for cutting the surface layer,
This makes it possible to effectively implement the preliminary roadbed treatment method of this M1 first brother.

[Brief explanation of the drawing]

The drawings show the embodiments of the present invention; FIG. 7 is a cross-sectional view of a roadbed undergoing the cutting process of the first invention, FIG. 2 is a cross-sectional view of the roadbed undergoing the same filling process, and FIG. 2 Side view of the invention, 1st
1 is an enlarged sectional view taken along the line ■-IV in FIG. 3. The figure is a sectional view taken along the line ■-v in FIG. /...Pavement layer, /'...I+It block block...kerf, 3...concavity,! ... Cutting scrapes, part 2...
・Filling material, /Otsu... Rotating shaft, 23... Cutter disk, 26... Cutter for cutting the roadbed surface layer, 27.
・Base body, 2δ, 32 , ・Cutting bit. Future applicant: Yutaka Fukami Sanwa Kizai Co., Ltd.

Claims (1)

[Claims] (11. In the pavement layer of a paved road, three or more thin grooves are cut parallel to each other at intervals, cutting into the pavement layer, thereby cutting the pavement layer with the grooves. A groove is formed on the ridge pavement block to be divided, and a groove is formed by cutting off the surface layer of the ridge pavement block to form a concave portion slightly recessed from the surface of the paved road, and the cutting groove is formed in the groove. A preliminary roadbed treatment method for excavating a paved road, which comprises backfilling, then filling the recess with a filler made of a binder mixed with aggregate, and hardening it. (2) Frame A plurality of cutter disks having cutting bits on the outer circumferential surface are fixed at intervals to a rotating shaft horizontally supported on the rotating shaft, and between the plurality of adjacent cutter disks, the outer circumferential surface of the cylindrical base is A roadbed cutting device in which a cutter for cutting the surface layer of a roadbed, which has a number of cutting bits protrudingly arranged in an arrangement that does not leave cutting residue, is fixed concentrically to the rotating shaft.