JP2891806B2 - Boring depth measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boring depth measuring device and, more particularly, to a device for continuously displaying a drilling depth.

[0002]

2. Description of the Related Art In general, when measuring the boring depth, as a method of confirming the drilling length of the hole, the rods used for drilling are sequentially pulled out and the lengths of the rods are measured or the rods are measured. After all the rods were pulled out, a rod with a diameter smaller than this rod was inserted into the perforated part to measure the depth.

In the case where the drilling length is deep, such as the curtain gutter of a dam, a step method is required which repeats these depth measuring operations every time drilling is performed for about 10 m.

[0004]

However, in the above-mentioned conventional apparatus, boring must be stopped every time measurement is performed, which is inefficient. Further, there is a problem that a long scale or a thin rod is required to measure the depth of the perforated portion.

In addition, since the ordering party must be present at the time of confirming the boring depth, the ordering manager and the order manager must always be on-site during the above-mentioned operation. There is a lack of efficiency.

In order to prove the excavation depth inside and outside, photographs are sometimes used, but there is a problem that objective reliability is lacking. The present invention has been made in view of the above matters,
It is possible to continuously display the depth of the perforated part even during boring without stopping boring at each measurement,
A technical object is to provide a highly reliable boring depth measuring device even when proving the excavation depth inside and outside.

[0007]

The present invention has the following configuration in order to solve the above technical problems. That is, a boring unit having a hydraulic piston for press-fitting a drilling rod into the ground and a distance measuring unit for measuring a descent distance of the hydraulic piston, and inputting data of the pressure of the hydraulic piston and the distance measuring unit. A data input unit, a calculation unit that inputs data from the data input unit, and a storage unit that is connected to the calculation unit and stores a relationship between the pressure of the hydraulic piston and the depth of the tip of the drilling rod in advance. ,
The arithmetic unit includes a display unit connected to the arithmetic unit, the arithmetic unit compares the pressure of the hydraulic piston with data in the storage unit to calculate an approximate distance, and calibrates with data from the distance measurement unit. The depth of the tip of the piercing rod is displayed on the display unit.

[0008]

The present applicant has found that there is a certain relationship between the drilling depth and the pressure at the hydraulic piston, and the relationship is stored in the storage unit.

Here, when the pressure information on the hydraulic piston is input to the arithmetic unit via the data input unit, the arithmetic unit searches the data in the storage unit and extracts the depth information corresponding to the input data. The information is collated with the data from the distance measurement unit and output to the display unit. Since the data from the distance measuring unit accurately indicates the actual position of the hydraulic piston, an accurate value can be obtained in the range of the stroke of the hydraulic piston. This is compared with the depth information, and if an error equal to or less than the stroke of the hydraulic piston occurs, it is replaced with data from the distance measurement unit and displayed.

[0010] Thus, a rough depth of several meters at the perforated part is obtained from the pressure information of the hydraulic piston, and a fine depth of several centimeters is obtained from the data from the distance measuring part. This enables accurate depth measurement regardless of the depth of the perforation.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The boring part 4 for press-fitting the piercing rod 1 into the ground will be briefly described. A swivel head 4e protrudes from one side of the frame 4a.
Two hydraulic pistons 2 are provided vertically.

The lower end of the hydraulic piston 2 is held by a hydraulic cylinder 4b, and the upper end of the hydraulic piston 2 is connected by a coupler 4c. The coupler 4c is provided with a spindle 4d. The spindle 4d is inserted through the swivel head 4e, and a screw chuck 4f is provided at the lower end of the spindle 4d. The screw chuck 4f contains a chuck piece 4g and a chuck bolt 4h.

The inside of the spindle 4d is hollow, and the piercing rod 1 is inserted therein. Then, the piercing rod 1 is held by the chuck piece 4g, and is firmly fixed by rotating the chuck bolt 4h. A piercing bit 1 is provided at the tip of the piercing rod 1.
a is provided to excavate underground.

A scale S is vertically provided on the coupler 4c, while a photo interrupter P for holding the scale S in a non-contact manner is provided on the swivel head 4e. The scale S is printed with barcode position information, and the photointerrupter P reads the position information to measure the descending distance of the hydraulic piston 2. The scale S and the photo interrupter P constitute a distance measuring unit 3. The hydraulic cylinder 4
Two hydraulic pumps A and a pressure sensor 5a are connected to b.

The pressure sensor 5a indicates the pressure applied to the hydraulic piston 2, and this data and the data of the distance measuring unit 3 are input to the data input unit 5. The data formatted by the data input unit 5 is input to the arithmetic unit 6. The storage unit 7 is connected to the operation unit 6. The storage unit 7 stores the relationship between the descending distance of the hydraulic piston 2 and the pressure at the hydraulic piston 2, and outputs information on the descending distance of the hydraulic piston 2 in accordance with a command from the arithmetic unit 6. .

The operation unit 6 is connected to a depth display unit 8, an operation mode display unit 8a, a hybrid recorder 8b, and an oscillograph 8c, so that the state of depth and depth change can be displayed in real time. ing.

The data from the data input unit 5 is A /
The data can be directly written into the storage unit 7 via the D converter 70. Further, the arithmetic unit 6 includes an AND gate 7
1, data from the reference time generator T is input.

The arithmetic section 6, the storage section 7, the depth display section 8, the operation mode display section 8a, the AND gate 71, and the reference time generator T constitute a data recorder D. The arithmetic unit 6 is provided with a serial data transmission / reception port so that data can be transmitted / received to a remote place.

That is, data sent via a telephone line or the like is input to the computer 51,
Can be plotted and tabulated for each data input to the XY plotter 52 and the printer 53 connected to the display unit 8, the operation mode display unit 8a, the hybrid recorder 8b, and the oscillograph 8c. ing.

The above-mentioned series of operations is performed by the remote control panel 50.
Before operation, a memory card for storage (not shown) is inserted into the data recorder D,
The storage memory card stores a management password, so that an unauthorized operation can be prevented.

Hereinafter, an operation example will be described. First, the boring unit 4 is set to a state in which boring is possible, and a memory card is inserted into the data recorder D.

Subsequently, the user operates the remote control panel 50 to issue a command to start, continue or stop boring.
Thereby, drilling is started, and data from the pressure sensor 5a and the photointerrupter P is input to the data input unit 5. The data from the data input unit 5 is input to the arithmetic unit 6 and collated with the data in the storage unit 7.

The storage unit 7 stores the drilling depth and the hydraulic piston 2
Because the relationship with the pressure at
The drilling depth can be calculated from the pressure data input to the. Then, the data thus calculated is displayed on the display unit 8 together with the reference time.

The display value of the display unit 8 indicates that the hydraulic piston pressure has become equal to or higher than the pressure set before drilling.
The cumulative addition is performed on condition that the operation mode set on the remote control panel 50 is the start mode. That is, the hydraulic piston 2 repeats a reciprocating motion at the time of drilling, but adds the depth only when the hydraulic pressure required for drilling has exceeded a set value.

The hybrid recorder 8b includes a boring number, a drilling start date and time, a set pressure value, an accumulated depth length for each specific time and its time, a continuous stop date and its time,
The end stop and the time are printed, and the hydraulic pressure value and the stroke of the hydraulic piston 2 are recorded in a time series graph on the same paper.

Since this recording is also recorded on a memory card, the memory card can be removed from the main body and reproduced by the computer 51 described above. This device can be applied to BH pile construction, foundation pile construction, geological survey, exploration drilling construction, dam curtain ground construction, drilling construction, ground reinforcement construction, chemical liquid injection construction, earth anchor hole construction, etc.

In these works, the reliability can be greatly improved, the working time can be shortened, the attending inspection scale can be omitted, and defective works can be prevented.

[0028]

According to the present invention, since the depth of the tip of the piercing rod can be continuously and constantly displayed by the pressure of the hydraulic piston, efficient construction can be performed. In addition, since objective data can be obtained, reliability is greatly improved.

[Brief description of the drawings]

FIG. 1 is a claim correspondence diagram showing one embodiment of the present invention.

FIG. 2 is a perspective view of a boring portion showing one embodiment of the present invention.

FIG. 3 is a perspective view of a boring part showing one embodiment of the present invention.

FIG. 4 is a perspective view of a boring part showing one embodiment of the present invention.

FIG. 5 is a block diagram showing one embodiment of the present invention;

[Explanation of symbols]

 1 drilling rod, 2 hydraulic piston, 3 distance measuring section, 4 boring section, 5 data input section, 6 arithmetic section, 7 storage section, 8 display section.

Claims (1)

(57) [Claims] A boring unit having a hydraulic piston for press-fitting a drilling rod into the ground and a distance measuring unit for measuring a descent distance of the hydraulic piston; and a boring unit for measuring the pressure of the hydraulic piston and the distance measuring unit. A data input unit for inputting data, an operation unit for inputting data from the data input unit, and a relation between the pressure of the hydraulic piston and the depth of the tip of the piercing rod, which are connected to the operation unit, are stored in advance. A storage unit, and a display unit connected to the calculation unit, wherein the calculation unit calculates the approximate distance by comparing the pressure of the hydraulic piston with data in the storage unit, and calibrates with the data from the distance measurement unit. A boring depth measuring device for displaying the depth of the tip of the perforated rod on a display unit.