JPH09100691A - Method of collecting asphalt core, and auxiliary tool therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save the labor for collecting work of asphalt core. SOLUTION: A guide ring 12 for guiding a core bit 6 on the tip of an electric drill 1 is formed. Footrest parts 15 are integrally provided on both lateral sides of the guide ring 12. A worker puts feet F on the footrest parts 15 to fix an auxiliary tool 11, the core bit 6 is fitted to the guide ring 12 of the auxiliary tool 11 to cut a paved surface R. A core K can be straightly collected without separately using a lifting device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for collecting asphalt cores for collecting cores used for testing in asphalt pavement and the like, and an auxiliary tool therefor.

[0002]

Conventionally, in asphalt pavement, a dedicated sampling device has been used for sampling cores. The sampling device is provided with a core bit that can be moved up and down in a machine frame, and Is equipped with a drive engine for rotationally driving. For this reason, a gate car or a unic car is required to transport the sampling device, and two or more workers, a person who operates the core bit and a person who holds down the machine frame, are required for the sampling, which results in cost reduction. There was a problem that it took time and effort.

Therefore, an object of the present invention is to provide a method for collecting asphalt core and an auxiliary tool for the core bit, which enables the core bit to be collected by one person by reducing the labor of the collecting work.

[0004]

A method of collecting asphalt core according to claim 1, wherein a core bit is provided at a tip of an electric drill having a grip portion, and the core bit is provided along an auxiliary tool provided on the paving surface. It is a method of collecting asphalt cores to be inserted into a pavement, and a core bit can be collected by one person by inserting the core bit into a pavement along an auxiliary tool with an electric drill.

The auxiliary tool according to claim 2 has an inner diameter corresponding to the outer diameter of the core bit at the tip of the electric drill, and is provided with a guide ring into which the core bit is inserted, and a footrest portion integrally provided on the guide ring. It is an auxiliary tool for asphalt collection. Workers step on the footrests to fix the auxiliary tool, and cut the paved surface by aligning the core bit with the guide ring of this auxiliary tool.

[0006]

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 and 2 show a first embodiment of the present invention. An electric drill 1 with a torque limiter is provided with a grip portion 3 at a rear portion of a main body 2, a switch 4 is provided at the grip portion 3, and a tip end thereof. Is provided with a rotary shaft 5, and an electric motor (not shown) provided therein by operating the switch 4.
Rotates and a diamond core bit (hereinafter referred to as a core bit) 6 connected to the rotary shaft 5 is rotationally driven. Further, on the front side of the electric drill 1, a handle 7 constituting a grip portion is provided so as to project laterally. The core bit 6 is formed by mixing diamond powder with metal powder, has a hollow cylindrical shape with an open front side, and has a cutting blade portion 6A at its tip. Further, the electric drill 1 uses a generator or a household power source as a power source 8 and has a cord 9 with an outlet connected to the power source 8.
In the figure, 2A is a flange portion provided on the front side of the main body 2 and has a diameter larger than that of the core bit 6, and 10 is a cylindrical sponge to be inserted into the core bit 6. is there.

Auxiliary tool 11 made of metal is a guide ring.
The guide ring 12 includes a cylindrical portion 13 having an inner diameter corresponding to the outer diameter of the core bit 6, and a flange portion 14 provided at the lower end of the cylindrical portion 13, and the left and right sides of the flange portion 14 are provided. The footrest 15 consisting of a metal plate piece is welded to and integrally provided,
The collar portion 14 and the footrest portion 15 are arranged on the same plane, and the cylindrical portion 13 is arranged with respect to the collar portion 14 and the footrest portion 15.
Are installed at a right angle.

Next, the method of collecting asphalt core using the auxiliary tool 11 will be described. The auxiliary tool 11 is placed on the paved surface R of the asphalt, and the feet F are placed on the left and right footrests 15 to assist the auxiliary tool 11. To fix. The sponge 10 containing water is inserted and arranged in advance in the core bit 6, and the core bit 6
The tip of is inserted into the cylindrical portion 13. The worker grips the grip portion 3 and the handle 7 of the electric drill 1, operates the switch 4 to rotate the core bit 6, and pushes it into the pavement surface R. In this way, the electric drill 1 is held by hand to cut the pavement surface R. The core bit 6 is guided by the guide ring 12 to be inserted straight into the pavement surface R, and after cutting, the cylindrical asphalt. The core K can be pulled out smoothly, and the assisting tool 11 is pressed down with the foot, and the guide ring 12
Since the core bit 6 is positioned by the above, the core bit 6 does not swing to the left and right at the start of cutting, and the work can be performed safely. Further, when the core bit 6 is inserted into the paved surface R, the sponge 10 shrinks, water inside is supplied to the cutting portion, and cooling of the core bit 6 and scattering of asphalt debris are prevented.

As described above, according to the present embodiment, in the asphalt core collecting method for collecting the asphalt core K of the pavement surface R, the core bit 6 is provided at the tip of the electric drill 1 and the core bit 6 is provided. It is an asphalt core sampling method of inserting into the paving surface R along the auxiliary tool 11 provided on the paving surface R, and by inserting the core bit 6 into the paving surface R along the auxiliary tool 11 with the electric drill 1,
One person can collect the core K, which enables labor saving in the collecting work.

In this embodiment, as described above, claim 2
Corresponding to, a guide ring 12 having an inner diameter corresponding to the outer diameter of the core bit 6 at the tip of the electric drill 1 and into which the core bit 6 is inserted, and a footrest portion 15 integrally provided on the guide ring 12 are provided. Since it is provided, the worker steps on the footrest portion 15 to fix the auxiliary tool 11, aligns the core bit 6 with the guide ring 12 of the auxiliary tool 11, and cuts the pavement surface R, thereby separately raising and lowering device. It is possible to perform straight cutting without using a tool, etc., and it is possible to save labor in the sampling work. In addition, the conventional sampling device has a weight of about 85 kg, whereas the electric drill 1 is a weight that can be carried by a worker, and even if there is no household power source at the site, an inverter can be used. It is possible to receive the power supply from the vehicle-mounted battery and also from the generator. When the electric drill 1 is supplied with necessary electric power, the inverter and the generator have a weight of about 5 kg and about 20 kg, respectively, and therefore can be carried by an ordinary passenger car.

Since the footrests 15 are provided on the left and right sides of the center line of the guide ring 12, the footrests 15 are supported by the both feet F.
The auxiliary tool 11 can be stably fixed by stepping on, and the electric drill 1 can be operated in a stable posture. Further, since the electric drill 1 uses the household power source as the power source 8, a large engine drive device is not required, and even when there is no household power source, a small generator can be used as the power source 8. Furthermore, since the electric drill 1 is provided with the torque limiter, there is no concern that the worker is swayed during cutting. Further, since the collar portion 2A is provided on the front side of the main body 1, the worker who holds the grip portion 3 does not come into contact with the core bit 6 and the work can be performed safely.

FIG. 3 shows a second embodiment of the present invention, in which the same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. In this example, the collar portion 14 will be described. Also, an example in which a plurality of protrusions 16 are provided on the back surface of the footrest portion 15 is shown, and these protrusions 16 have a sharp pin shape.

When the footrest 15 is stepped on, the plurality of protrusions 16 bite into the asphalt pavement surface R, so that the auxiliary tool 11 can be securely fixed.

The present invention is not limited to the above-mentioned embodiment, but various modifications can be made within the scope of the present invention. For example, the height of the cylindrical portion can be appropriately selected.

[0015]

According to the asphalt core collecting method of claim 1, in the asphalt core collecting method for collecting asphalt core on a pavement surface, a core bit is provided at the tip of an electric drill having a grip, and the core bit is provided on the pavement surface. Since it is a method of inserting the auxiliary tool into the paved surface along with the provided auxiliary tool, it is possible to provide a method of asphalt core extraction in which the extraction of labor is facilitated and a core bit can be extracted by one person.

The auxiliary tool according to claim 2 is the auxiliary tool used in the asphalt core sampling method according to claim 1, wherein the auxiliary tool has an inner diameter corresponding to the outer diameter of the core bit at the tip of the electric drill, and a guide ring for inserting the core bit. Since the guide ring is provided with the footrest portion provided integrally with the guide ring, it is possible to provide labor-saving labor for the collection work and provide an auxiliary tool capable of collecting the core bit by one person.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a first embodiment of the present invention.

FIG. 3 is a sectional view of an auxiliary tool showing a second embodiment of the present invention.

[Explanation of symbols]

 1 Electric drill 3 Grip part 6 Core bit 7 Handle (grip part) 11 Auxiliary tool 12 Guide ring 15 Footrest part R Paved surface

Claims (2)

[Claims] 1. An asphalt core collecting method for collecting asphalt core on a pavement surface, wherein a core bit is provided at a tip of an electric drill having a grip, and the core bit is provided along an auxiliary tool provided on the pavement surface. A method for collecting asphalt core, which is characterized in that 2. The auxiliary tool used in the asphalt core sampling method according to claim 1, wherein the guide ring has an inner diameter corresponding to the outer diameter of the core bit at the tip of the electric drill, and a guide ring into which the core bit is inserted, and an integral part of the guide ring. An auxiliary tool comprising: a footrest portion provided on the.