JP2000265774A - Method and device for measuring drilling distance and drilling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for measuring a drilling distance through which a drilling distance and a drilling speed can be more minutely and accurately measured and can prevent riability of a drilling machine from being impaired and a device for measuring a drilling distance boring distance used for the method and a drilling machine equipped with the device for measuring the drilling distance. SOLUTION: In a drill jumbo 1, a non-contact type displacement meter 51 is fixed to the tip of a guide shell 30 and a sleeve 52 is fixed to a rock drill 40 respectively. reflected light emitted from the non-contact type displacement meter 51 and reflected by the sleeve 52 is received by the non-contact type displacement meter 51 to measure the distance between the displacement meter 51 and the sleeve 52. The displacement of the distance is the moved distance of the rock drill 40 or the drilled distance. As the drilled distance is processed in the central part 53, it is processed as a drilling speed and the speed is displayed on the indicator provided in a driver's seat 11 together with the drilled distance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drilling machine which can instantaneously grasp a minute variation in a drilling distance and a drilling speed necessary for more accurately grasping rock properties, and which does not reduce the reliability of a drilling machine. The present invention relates to a distance measuring method, a drilling distance measuring device used for the method, and a drilling machine provided with the drilling distance measuring device.

[0002]

2. Description of the Related Art When excavating an underground cavity such as a tunnel, it is extremely important to investigate the properties of the bedrock in front of or around the cavity, that is, the geology, in order to safely and reliably proceed with the excavation. In addition, by grasping the change over time of the excavation speed, that is, the drilling distance, it is possible to grasp the properties of the rock mass without affecting the construction at all. For this reason, various methods have been proposed in order to more accurately and quickly measure the time-dependent change in the depth of the borehole, that is, the drilling speed.

[0003] As an example of a conventional method for measuring a drilling distance,
As disclosed in Japanese Patent Application No. 9-270040, a bogie that moves a rock drill back and forth is hydraulically driven, and a flow meter is used to measure the amount of oil flowing into and out of this bogie.
There is a method of indirectly measuring a moving distance of a rock drill, that is, a drilling distance.

[0004]

At the work site,
It is desired to grasp the properties of rock mass instantly and in detail. However, since one hydraulic device usually has a plurality of driving units, the amount of oil flowing into and out of one driving unit is affected by the operation of the other driving units. For this reason, in the above-described conventional example, even if the drilling speed and the drilling distance are measured, for example, several tens of times per second and hundreds of times from the fluctuation in the amount of oil flowing into and out of the bogie of the rock drill, the measured value is obtained. Was leveled under the influence of another driving unit, and it was not possible to measure the moving distance of the rod and bit due to minute and instantaneous fluctuations.

[0005] Therefore, in the above-mentioned conventional example, it is not possible to measure instantaneous fluctuation data, which is more meaningful for rock exploration, with high accuracy.

If the flow meter breaks down or breaks down, it may affect the operation of the hydraulic system, that is, the bogie, so that the reliability of the rock drill may be reduced.

In view of the above circumstances, the present invention provides a method for measuring a drilling distance, which can instantaneously grasp a minute change in the drilling distance, can also grasp the drilling speed, and does not reduce the reliability of the drilling machine. An object of the present invention is to provide a piercing distance measuring device and a piercing machine provided with the piercing distance measuring device.

[0008]

In order to solve the above-mentioned problems, the invention according to claim 1 is a method for measuring a piercing distance used for piercing means for piercing by moving back and forth along a guide means. Irradiating waves from one of the perforation means or the guide means toward the other,
By analyzing the result of receiving the irradiated wave on the other side and calculating the distance between the guiding means and the perforating means, the moving distance of the perforating means, that is, the perforating distance is measured. I do.

In the present invention, the wave means an electromagnetic wave typified by a laser beam, an ultrasonic wave, or the like, and a displacement measuring method using these waves has already been put to practical use. In addition, the displacement can be measured almost in real time.

Therefore, according to the first aspect of the present invention,
By using waves such as electromagnetic waves and ultrasonic waves to measure the position of the drilling means with reference to the guide means, the rocks move forward with destruction (drilling) or retreat due to non-destruction of rocks, etc. The instantaneous position change of the perforation means can be grasped directly, more accurately, and almost in real time.

In addition, by applying the method disclosed in Japanese Patent No. 2749561, for example, the instantaneous position change of the perforation means and the rock properties are previously associated with each other, whereby the rock properties at the excavation site can be grasped. Becomes possible. Therefore,
The rock properties can be grasped more finely and accurately, that is, as more meaningful data.

[0012] Further, the piercing distance by the piercing means can be grasped more accurately and in real time as the sum of the moving distances.

[0013] The above-mentioned piercing distance measuring means according to claim 1 may receive the wave on the other side, but after reflecting the wave on the other side as in the invention according to claim 2. Alternatively, a configuration may be adopted in which the “one result received” is analyzed by the one side by receiving the wave on the one side and analyzing the result.

Further, according to the first or second aspect of the present invention, as described in the third aspect, the perforation speed is calculated by dividing the variation of the perforation distance by time. It may be configured. In this case, since the position fluctuation of the perforation means can be grasped more finely and accurately, the rock properties can be grasped more finely and accurately.

According to a fourth aspect of the present invention, there is provided a piercing distance measuring device for measuring a piercing distance of a piercing means driven along a guiding means, wherein one of the piercing means and the guiding means is provided. Attached wave transmission means,
Reflecting means attached to one of the perforation means or the guiding means and reflecting the wave from the wave transmitting means, and wave receiving means attached to the one and receiving the reflected wave from the reflecting means. And a distance calculating means for calculating a perforation distance by analyzing a reception result of the wave receiving means and calculating a moving distance of the perforation means.

According to the fourth aspect of the present invention, it is possible to manufacture a perforation distance measuring apparatus that performs the second aspect of the present invention.

The invention described in claim 5 is the same as the invention in claim 4.
The drilling distance measuring device according to the item (1), further comprising an analyzing unit that calculates a drilling speed by dividing a change amount of the drilling distance by time.

According to the fifth aspect of the present invention, it is possible to manufacture a perforation distance measuring apparatus that performs the third aspect of the present invention.

According to a sixth aspect of the present invention, there is provided a drilling machine comprising: a punching means for forming a hole in the ground; and a guiding means for guiding the drilling means in one direction. Characterized in that it is provided with a piercing distance measuring device according to (1).

According to the sixth aspect of the present invention, it is possible to manufacture a drilling machine which can perform drilling more accurately and more accurately grasp the properties of the ground and rock. The drill is, for example, a drill jumbo, but is not limited thereto.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A drill jumbo 1 (a drilling machine) according to an embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 is a schematic side view illustrating the drill jumbo 1, and FIG. 2 is a perspective view illustrating a sleeve 52 which is a component of the drill jumbo 1.

First, the configuration of the drill jumbo 1 will be described. As illustrated in FIG. 1, the drill jumbo 1 includes a bogie 10 and a boom 20 attached to a front portion of the bogie 10.
And a guide shell 3 attached to the tip of the boom 20
0 (guide means), a rock drill 40 (piercing means) moving back and forth on the guide shell 30, and a drilling distance measuring device attached to a predetermined portion of the drill jumbo 1.

The bogie 10 has the same structure as a vehicle body used for a well-known drill jumbo, and thus the details are omitted.

The boom 20 has the same configuration as the boom used for the well-known drill jumbo. That is, one end of the boom 20 is fixed to the lower surface of the guide shell 30 via the drive mechanism 21, and the other end is the carriage 10.
, So that the vertical angle can be changed. The drive mechanism 21 connects the guide shell 30 to the boom 2
By rotating in the vertical direction and rotating in the horizontal direction with reference to 0, it plays a role of finely adjusting the positions of the guide shell 30 and the drifter 2.

The guide shell 30 is a guide shell used for a well-known drill jumbo, and guides the rock drill 40 in the front-rear direction.

The rock drill 40 is also a rock drill used for a well-known drill jumbo, and has a drill bit 41 for drilling a hole in contact with the ground or rock at the tip of a rod.

The above-described perforation distance measuring device includes a non-contact type displacement meter 51 attached to the tip of the guide shell 30;
The rock drill 40 also serves as the measurement target of the non-contact displacement meter 51.
Sleeve 52 (reflecting means) fixed behind the rod
And a central portion 53 that supplies power to the non-contact displacement meter 51 and displays a measurement result of the non-contact displacement meter 51.

The non-contact type displacement meter 51 is, for example, a well-known light irradiation type displacement meter which has already been put into practical use.
A light emitting device 51a (wave transmitting means) for irradiating the laser beam to the laser 2, a light receiving device 51b (wave receiving means) for receiving the laser reflected by the sleeve 52 and converting it into an electric signal, and a function for calculating a distance. Arithmetic unit 51c
(Distance calculation means). Arithmetic unit 51c
Is a CPU (Central Processing Unit) or RAM (Random Acc
ess Memory) and ROM (Read Only Memory). That is, the CPU is provided with the RAM or the ROM.
Using a program stored in advance, the time from irradiating the light from the laser emitter 51a to the sleeve 52 to the reception of light by the light receiver 51b is recognized, and this time and the light speed, which is a known constant, are calculated. Using the non-contact type displacement meter 51
, The distance from the guide shell 3
The position of the rock drill 40 recognized by using the deepest part of 0 as a reference point is calculated and output to the central part 53.

The sleeve 52 is, as shown in FIG.
2a has a shape in which a disk 52b is attached to one end surface. Here, the disk 52b mainly has a hole having the same size as the inner diameter of the cylinder 52a. Since the size of this hole is slightly larger than the cross section of the rod of the rock drill 40,
The sleeve 52 is disposed integrally with the rock drill 40 by passing the rod of the rock drill 40 through the hole. The surface of the disc 52b facing the non-contact type displacement meter 51 is, for example, subjected to a mirror surface treatment or a reflection film so as to reflect the light from the non-contact type displacement meter 51. For this reason, even if the rod of the rock drill 40 rotates, the sleeve 52 always has the laser transmitter 51 because the reflecting surface is a disk.
Reflects light from a.

The central portion 53 includes a well-known power source, a well-known display device such as a liquid crystal display device or a CRT, an arithmetic device 54 (analyzing means) for calculating the drilling speed of the rock drilling machine 40, and the above-described drilling speed and drilling speed. A recording device 55 for recording the distance and the like, and an amplifier for outputting the drilling distance of the rock drill 40 output from the non-contact displacement meter 51 and the drilling speed output from the arithmetic device 54 to the display device are mainly provided. It is attached to the driver's seat 11 of the bogie 10 so that the operator can easily recognize the display contents of the display device. Here, the arithmetic unit 54 includes a CPU, a RAM, and a ROM. In other words, the CPU uses a program stored in the RAM or the ROM in advance to execute the non-contact displacement meter 5.
The drilling speed of the rock drill 40 is calculated by dividing the position fluctuation amount of the rock drill 40 output from 1 by the measurement time, and the drilling speed is output to the amplifier. The recording device 55 is a recording device that records data on a floppy disk built therein so as to be freely detachable.

Next, the operation of the drill jumbo 1 will be described.

First, the front surface of the carriage 10 is
(Not shown). Next, the boom 20 is driven and the drill bit 41 of the rock drill 40 on the guide shell 30 is moved.
Is brought into contact with a perforated portion (not shown). At this stage,
The rock drill 40 is located at the deepest part of the guide shell 30, that is, at a reference point.

Next, the rock drill 40 pierces the piercing point 100 by hitting or moving forward on the rock while rotating the piercing bit 41.

Here, the non-contact type displacement meter 51 of the drilling distance measuring device measures the drilling distance of the rock drill 40 by repeating light emission and light reception. That is, according to the non-contact displacement meter 51, the perforation distance is measured using light,
The time required for one measurement is, for example, about 1 millisecond, which is much shorter than in the past, and the measurement accuracy is, for example, 10 times.
μm, which is much higher than in the past. Therefore, it is possible to measure the perforation distance almost in real time. Further, for example, when drilling is performed by hitting while rotating the drill bit 41, it is possible to measure the drilling distance for each hit and the retreat amount of the rock drill 40 due to the repulsion of the hit.

The drilling distance measured in this way is output from the non-contact displacement meter 51 to the central portion 53. After calculating the perforation speed from the perforation distance, the central portion 53 displays the perforation distance, the perforation amount and the retreat amount for each hit of the perforation bit 41, and the perforation speed on the display device, and uses the recording device 55. Necessary data is recorded on the floppy disk.

Thereafter, the installer including the operator of the drill jumbo 1 reads the data in the floppy disk described above,
By comparing the instantaneous position change of the rock drill 40 with the data in which the rock properties are correlated in advance, the rock properties at the excavation site are grasped. At this time, the drilling distance can be grasped more precisely and more accurately than in the past, so that the rock properties at the excavation site can be grasped more finely and accurately.

Further, by comparing the drilling speed of the rock drill 40 with the data in which the drilling speed of the rock drill 40 and the rock properties are associated in advance, the rock properties at the excavation site can be made finer and more precise. Can understand accurately.

Further, since the measurement result is recorded on the above-mentioned floppy disk via the recording device 55, the data can be analyzed more finely and verified again at another place.

As described above, in the drill jumbo 1 according to one embodiment of the present invention, the non-contact type displacement meter 51 is fixed to the tip of the guide shell 30, and the sleeve 52 is fixed to the rock drill 40, respectively. The non-contact type displacement meter 51 receives the reflected light emitted from the type displacement meter 51 and reflected by the sleeve 52, so that the distance between the non-contact type displacement meter 51 and the sleeve 52, that is, the movement of the rock drilling machine 40. Since the distance is measured, the instantaneous moving distance of the rock drill 40 can be grasped. Therefore, according to the drill jumbo 1, the operator including the driver can more accurately and finely grasp the drilling distance, so that the rock property at the excavation site can be more finely and accurately grasped.

The drilling distance measured by the non-contact type displacement meter 51 is processed by the central portion 53 to be processed to a drilling speed. Therefore, according to the drill jumbo 1, the operator including the driver can accurately and accurately grasp the drilling speed, so that the rock property at the excavation site can be more finely and accurately grasped.

Further, using the data recorded on the floppy disk, the rock properties at the excavation site can be analyzed more finely and re-verified.

Further, since the non-contact type displacement meter 51 is mounted on the guide shell 30, the influence of the vibration during drilling on the drilling distance measuring device can be minimized.

The present invention is not limited to the present embodiment, and can be arbitrarily modified without departing from the spirit of the invention.

For example, although the non-contact type displacement meter 51 is configured to measure a distance using light, it is possible to use an arbitrary electromagnetic wave in principle, and it is also preferable to use an ultrasonic wave. Is also possible. In addition, the non-contact type displacement meter 51
Is mounted on the rock drill 40 and a target having a light reflection function is mounted on the guide shell 30, the same effect can be obtained in principle. Further, in the above embodiment, the non-contact type displacement meter 51 integrally including the laser light emitter 51a, the light receiver 51b, and the arithmetic unit 51c is used, but they may be separately installed. In this case, the same effect can be obtained even if the light receiver 51b is provided at the position of the sleeve 52 and the arithmetic unit 51c is provided at another position.

Although the drill jumbo is provided with one boom 20, one guide shell 30, and one rock drill 40, of course, a plurality of drill jumbo may be provided. Further, the drilling machine does not need to be a drill jumbo, but may be a drilling machine having a drilling means for drilling by moving back and forth along the guide means.

[0046]

According to the first and second aspects of the present invention, the drilling distance can be adjusted more accurately, including instantaneous fluctuations.
And because it can be grasped in detail,
Can be grasped more precisely and accurately.

According to the third aspect of the present invention, the drilling speed can be grasped more finely and accurately, so that the rock properties at the excavation site can be grasped more finely and accurately.

According to the fourth aspect of the present invention, a piercing distance measuring apparatus for calculating a piercing distance according to the second aspect can be manufactured. According to the fifth aspect of the present invention, it is possible to manufacture a perforation distance measuring device that also calculates a perforation speed according to the third aspect of the invention.

According to the sixth aspect of the present invention, it is possible to produce a drilling machine capable of performing drilling more accurately and more accurately grasping the properties of the ground and bedrock.

[Brief description of the drawings]

FIG. 1 is a schematic side view illustrating a drill jumbo 1 according to an embodiment of the present invention.

FIG. 2 is a perspective view illustrating a sleeve 52, which is a component of the drill jumbo 1. FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 drill jumbo (drilling machine) 10 trolley 11 driver's seat 20 boom 30 guide shell (guiding means) 40 rock drilling machine (drilling means) 51 non-contact type displacement meter 51 a laser transmitter (wave transmitter) 51 b receiver (receiver) Means 51c Arithmetic unit (distance calculating unit) 52 Sleeve (reflecting unit) 53 Central part 54 Arithmetic unit (analyzing unit)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Koji Ishiyama 1-20-10 Toranomon, Minato-ku, Tokyo Nishimatsu Construction Co., Ltd. (72) Junichi Tsukada 2-23-11 Nishi-Nippori, Arakawa-ku, Tokyo Drill Machine Co., Ltd. F-term (reference) 2D065 AB01 AB21 BA12 BA31 BA39

Claims (6)

[Claims] 1. A perforation distance measuring method used for perforation means for perforating by moving back and forth along a guide means, wherein a wave is emitted from one of the perforation means and the guide means to the other. Further, the moving distance of the perforating means, that is, the perforating distance is measured by analyzing the result of receiving the irradiated wave on the other side and calculating the distance between the guiding means and the perforating means. A method for measuring a perforation distance, comprising: 2. The perforation distance measuring method according to claim 1, wherein the wave is reflected by the other, then received by the one, and the result is analyzed. . 3. The perforation distance measuring method according to claim 1, wherein the perforation speed is calculated by dividing the amount of change in the perforation distance by time. 4. A piercing distance measuring device for measuring a piercing distance of a piercing means driven along a guiding means, wherein: a wave transmitting means attached to one of the piercing means and the guiding means; Or, a reflecting means attached to one of the guide means and reflecting the wave from the wave transmitting means; and a wave receiving means attached to the one and receiving the reflected wave from the reflecting means. A perforation distance measuring device, comprising: a distance calculation unit for calculating a perforation distance by analyzing a reception result of the wave unit and calculating a moving distance of the perforation unit. 5. The perforation distance measuring apparatus according to claim 4, further comprising an analyzing means for calculating a perforation speed by dividing a change amount of the perforation distance by time. 6. A drilling machine comprising: a drilling means for forming a hole in the ground; and a guide means for guiding the drilling means in one direction, the drilling distance measuring device according to claim 4 or 5 being provided. A drilling machine, characterized in that: