JP3017482B1 - Pavement road surface cutting method and cutter used in the method - Google Patents

Abstract

An object of the present invention is to cut a pavement road surface into a square without generating a gap. A circular guide hole (2) is inscribed in a square corner, and a circular cutter (4) cuts between the guide holes (2).
The uncut portion 6 of the corner is cut by the corner cutter 5. Since the guide hole 2 is provided, the pavement road surface can be efficiently cut into a quadrangle without generating a margin 3 even when a rotary cutter is used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a gas pipe, a water pipe,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cutting a pavement road surface at the time of performing a work on an underground buried object such as a buried housing or a test excavation for confirming an underground buried object, and a cutter used therefor.

[0002]

2. Description of the Related Art Sewage pipes, water pipes,
There are underground objects such as underground pipes for communication and power. In some cases, pavement is cut and excavated to repair or inspect underground buried objects. Conventionally, when cutting a pavement road surface, a square cutting line was cut with a circular cutter.

[0003]

In this conventional cutting method, a circular cutter 4 is used as shown in FIG.
In order to completely cut and remove the pavement thickness d in the cut area indicated by the oblique line, the circular cutter 4 needs to be cut until the center of the circular cutter 4 reaches the corner C of the cutting line. for that reason,
On the pavement road surface 7, a portion corresponding to the radius of the circular cutter 4 has to be cut excessively, and a cutting line (cut off) 3 enters into a place other than the necessary area, and the restoration area of the pavement is large. The removal of the pavement slab also took time.

[0004] When cutting is stopped when the tip of the rotary cutter 4 reaches the corner C so as not to generate the margin 3, an uncut portion 6 is formed below the corner, and labor is required for cutting and removing this portion. It will cost. In addition, there is a construction method in which a cutting area is reduced, a repair area is reduced, and a pavement road surface can be quickly restored. However, in some cases, it is more convenient to perform excavation in a quadrangular shape in underground work. Therefore, an object of the present invention is to efficiently cut a pavement road surface into a quadrangular shape without generating a gap.

[0005]

A guide hole is provided at a corner of a square, a road surface is cut by a circular cutter between the guide holes, and a remaining portion at the corner is cut off by a corner cutter so that no extra cut is generated. Pavement road surface cutting was made possible. An uncut portion generated between the four corners and the guide hole was cut by a corner cutter having a blade having a right-angle cross section or an arc-shaped blade.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for cutting a pavement road will be described with reference to the drawings. 1 and 2 show a cutting process diagram of the present invention, and FIG.
Is a plan view of a corner portion, and FIG. 4 is a cross-sectional view of the corner portion. Example 1 As shown in FIG. 1, a rectangular cutting line 1 is drawn in a cut portion on a pavement road surface, and is inscribed in a square corner, and a circular guide hole 2 is provided by a boring device (not shown).
Next, the space between the circular guide holes 2 is cut by the circular cutter 4 along the cutting line 1, and cut until the tip of the circular cutter 4 reaches the corner C as shown in FIG. In this state, on the road surface, the cutting line reaches the corner C, but in the depth direction of the pavement, as shown in FIG. It is impossible to remove it. Therefore, a corner cutter 5 having a cutting blade having a cross section perpendicular to that shown in FIG. Therefore, a hole is drilled at the position of the center of gravity of the rectangular pavement slab to be cut and removed, an anchor having an enlarged diameter portion is inserted at the tip, the anchor is digged into the pavement slab, and the lifting machine lifts the pavement to remove it.

Second Embodiment As shown in FIG. 2, the basic procedure is the same as that of the first embodiment. In FIG. 3, the circular cutter 4 is cut to a position (T) where the distal end portion contacts the guide hole 2. Although the cutting line is in contact with the guide hole 2 on the pavement road surface, an uncut portion 6 remains in the depth direction of the pavement. Therefore, a corner cutter 5 having an arc-shaped blade shown in FIG. 6 is installed in the guide hole 2, and the uncut portion 6 is cut by applying vibration or pressure, and the paved road is cut in the same manner as in the first embodiment. Pull up the plate and remove it. In this case, as shown in FIG.
The pavement slab is removed in a shape with round corners.

The corner cutter 5 is for cutting off the uncut portion 6 between the corner and the guide hole 2 by vibration or hydraulic pressure, and comprises a main body and a blade attached to the tip. Depending on how far the pavement surface is cut with the circular cutter 4,
An arc-shaped cross section or a rectangular cross section is used. After the pavement slab has been removed, the excavator removes the earth and sand while retaining the soil, and performs necessary work.

[0009]

According to the present invention, a guide hole is provided at a corner of a square, and a road surface is cut by a circular cutter between the guide holes. Therefore, no piling is generated unlike the conventional method, and the pavement road surface can be efficiently cut into a square. Time is reduced. A circular guide hole is provided so as to be inscribed in the square corner, and cut with a circular cutter to the point where the circular guide hole and the cut part are in contact,
When the uncut portion between the corner portion and the guide hole is cut by an arc-shaped corner cutter, or when the corner is cut, the cut is made by a corner cutter having a right-angle cross section.

[Brief description of the drawings]

FIG. 1 is a cutting process diagram of the present invention.

FIG. 2 is a cutting process diagram of the present invention.

FIG. 3 is an enlarged plan view of a corner portion of the present invention.

FIG. 4 is an enlarged sectional view of a corner portion of the present invention.

FIG. 5 is a perspective view of a corner cutter.

FIG. 6 is a perspective view of a corner cutter.

FIG. 7 is an explanatory view of a conventional cutting method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cutting line 2 Guide hole 3 Extra cut 4 Circular cutter 5 Corner cutter 6 Uncut part 7 Paved road surface

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Katsuya Sato 1-1-1 Minami-Dainichicho, Kanshuji, Yamashina-ku, Kyoto-shi, Kyoto (72) Inventor: Yu Murase 1-22-2, Nishishinjuku, Shinjuku-ku, Tokyo (58) Field surveyed (Int.Cl. ⁷ , DB name) E01C 23/09

Claims (3)

(57) [Claims] 1. A method for cutting a pavement road surface in which guide holes are provided at corner positions of a square to be cut, and the guide holes are cut by a circular cutter. 2. The method for cutting a pavement road according to claim 1, wherein the guide hole is circular and the guide hole is inscribed in a square corner. 3. The method for cutting a pavement road surface according to claim 1, wherein an uncut corner portion is cut by a cutter adapted to the shape of the corner.