JP2805429B2 - Multi-axis rotary drilling machine equipped with drilling shaft torsion 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 multi-shaft rotary drilling machine having a plurality of row drilling shafts vertically suspended on a drilling machine base. The present invention relates to a multi-axis rotary drilling machine equipped with a drilling shaft torsion measuring device capable of calculating a twist between two drilling shafts by measuring the inclination of the drilling shaft.

[0002]

2. Description of the Related Art Using a multi-axis rotary drilling machine having a plurality of row drilling shafts vertically mounted on a drilling machine base so as to be vertically movable, a groove is formed in the ground by the row drilling shafts. Excavate, inject cement milk from the drilling axis, mix with earth and sand to create a soil consolidated body in the ground, and repeat such a unit operation to create a continuous mountain retaining wall and water blocking wall It is known. When constructing such a mountain retaining wall or water blocking wall, if the consolidated bodies for each unit operation are not formed so as not to cause mutual inconsistency, the connection of the consolidated bodies for each unit operation will not be possible. This will be sufficient, and will result in mechanically vulnerable parts of the completed mountain retaining wall or water blocking wall, or incomplete parts of the water stopping effect. In order not to cause such a situation, conventionally, the inclination of the row drilling shaft in the construction state is measured, the torsion of the row drilling shaft is calculated from the measurement data, and the solidified body for each unit operation is calculated. Was checking in which direction it would be created.

However, in the conventional method for measuring the inclination of a drilling shaft, when the drilling shaft reaches a depth to be measured, the drilling power block is once removed from the drilling shaft in the middle of construction and the center of the drilling shaft is removed. The insertion type gradient measuring block is manually dropped from the through-hole, and the gradient at a predetermined position is measured from the gradient signal from the gradient measuring block and the depth of the gradient measuring block. The same was performed for the hole axis, and the torsion between the row drilling axes was calculated from the measurement results. Obtaining torsion by such means requires a long-time construction interruption, and is also very difficult to measure because it is a measurement of deep underground, and it is extremely difficult to measure frequently according to the progress of construction Met. In addition, since the measurement must be performed manually, an artificial measurement error often occurs.

[0004]

An object of the present invention is to provide a multi-axis rotary drilling machine having a plurality of row drilling shafts vertically mounted on a drilling machine base so as to be vertically movable. In this method, the twist between one pair of drilling axes located at intervals of rows is sequentially determined at any depth in a single drilling process by a simple operation without requiring a preliminary operation for measurement. It is an object of the present invention to provide a multi-axis rotary drilling machine equipped with a drilling shaft torsion measuring device that can easily measure.

[0005]

In order to solve the above-mentioned problems, a multi-axis rotary drilling machine equipped with a drilling shaft torsion measuring device according to the present invention is vertically mounted on a drilling machine base so as to be vertically movable. A multi-axis rotary drilling machine having a plurality of row-shaped drilling shafts, a tilt detector integrally mounted in a pair of drilling shaft tips located at intervals of rows, and An on-axis transmitter / receiver connected to the inclination detector, a ground transmitter / receiver for transmitting / receiving to / from both the on-axis transmitter / receiver on the drilling machine base, and both mounted on the rotating drilling shaft. A separable transmission path connecting the on-axis transmitter / receiver and the ground transceiver provided on the fixed drilling machine base, and the drilling is performed by a relative displacement between the drilling machine base and the drilling shaft. A depth detector for measuring the depth of the tip of the hole axis, and both drilling axes from the ground transceiver in the drilling machine base It mainly comprises a calculator for calculating the torsion between the two drilling axes based on the oblique measurement signal and the depth measurement signal from the depth detector, and a display for graphically displaying each measured value and the calculation result. Features.

[0006]

The tilt measuring device attached to the tip of the drilling shaft is combined with the in-axis transmitter / receiver to measure the tilt of the drilling shaft tip at an arbitrary depth of the drilling shaft by remote control. Requires no direct manipulation from the ground. The on-axis transceiver and the ground transceiver provided on the drilling machine base are:
Because they are connected by a separable transmission path, not only when a single drilling shaft is used alone, but also when a long drilling shaft that connects multiple middle shafts is used, there is no problem between the two transceivers. Can send and receive. In the drilling machine base on the ground, the torsion between both drilling axes is immediately calculated by the calculator directly connected to the inclination measurement signal and the depth measurement signal of both drilling axes at an arbitrary depth, and the calculation result is shown in FIG. Since it is displayed on the display immediately after being converted, it is possible to confirm the torsion state at an arbitrary depth simultaneously with each measurement. All the equipment related to the measurement of torsion between the drilling axes is mounted on one excavator, so there is no need to prepare additional equipment for measurement at the time of measurement, and to use the separately prepared equipment All measurement work is completed by the excavator itself, without long-time interruption of construction due to measurement by cutting the drilling axis during construction and without causing manual measurement errors due to manual operation In addition, the measurement operation can be easily performed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The detailed features of the present invention will be described with reference to the embodiments shown in the accompanying drawings. FIG. 1 is a side view showing a drilling machine provided with a drilling shaft torsion measuring device according to the present invention. In the figure, reference numeral 1 denotes a drilling machine base including a driver's seat, a running track, and the like of the drilling machine. Show. A leader 2 is erected on the side of the drilling machine base 1, and a rotary power unit 3 is mounted along the leader 2 so as to be slidable in the vertical direction. To several drive shaft couplings located on the lower surface of the rotary power unit 3, three drilling shafts 4 vertically arranged in a row are connected. The number of drilling axes is not limited to three axes, and a drilling machine having two axes or a drilling machine having four or more axes is also an object of the present invention. Each of the drill shafts 4 is given forward and reverse rotations by the rotary power unit 3 and is moved up and down in the axial direction to excavate a grooved hole in the ground, and to remove cement milk from the tip of the drill shaft 4. Mixing and stirring is performed by the drilling shaft 4 while supplying the soil and sand inside, thereby forming a soil consolidated body.

Each drilling shaft 4 is divided into several sections in accordance with the drilling depth. In the embodiment shown in FIGS. 1 and 2, a drilling head 5 is located at the forefront and is joined to the lower end. A tip shaft part 4a composed of a lower half part 4b and an upper half part 4c which can be divided into upper and lower parts for mounting a tilt measuring instrument therein, and a rotary power unit 3 and a tip shaft part 4a located at an upper part. It is integrally formed with several intermediate shaft portions 4d interposed therebetween. In the drilling machine according to the present invention, of the row-shaped drilling shafts 4, one drilling shaft located at an interval between the rows, that is, in the embodiment shown in FIG. As shown in FIGS. 3 to 6, a gradient detector 21 for detecting the gradient of the lower half 4b, and a gradient signal of the gradient detector 21 are provided at the lower half 4b of the tip shaft 4a of the hole shaft 4. On-axis transmitter / receiver 2 for transmitting data and receiving measurement operation signals from the ground
2 and a power supply battery 23, which is a power supply for these.

That is, an annular storage space 8 is formed between the outer peripheral wall 6 of the lower half portion 4b and the cement milk supply pipe 7 at the center, and a pair of hooks 9 are fixed below the outer peripheral wall 6 inside.
A guide ridge 10 is provided on the upper side of the hook 9 along the axial direction, and a top joining plate 11a fixed to the upper end of the lower half 4b to join the lower half 4b to the upper half 4c is provided. A mounting plate 12 having a through hole is provided so as to protrude. On the other hand, the inclination detector 21, the on-axis transceiver 22, and the power battery 23
L fixed to the upper and lower surfaces of the side support plate 26 having an arcuate shape and having the axial groove 25 formed in the outer surface.
It is sandwiched between a U-shaped upper support plate 27 and a lower support plate 28 by a pushing screw 24. A pair of support rods 29 extending up and down is fixed inside the side support plate 26, a screw groove 30 is formed at an upper end thereof, and a ring-shaped portion 31 is formed at a lower end thereof. Side support plate 2
6 are fitted into the guide ridges 10, the two annular portions 31 of the support rod 29 are hooked on the hooks 9, and the nut 3 is inserted into the screw groove 30 of the support rod 29 passed through the mounting plate 12.
2, the inclination detector 21, the in-axis transceiver 22,
The power supply battery 23 is integrally fixed to the lower half 4b of the tip shaft 4a. Note that reference numeral 33 in the drawing denotes a rubber shock absorber.

The signal line from the on-axis transceiver 22 is connected to the lower half 4
b is connected to an induction coil 34a embedded in the annular plate 14 near the male supply pipe joint 13a. As shown in FIG. 3, the top joint plate 11a of the lower half 4b is bolted to the bottom joint plate 11b of the upper half 4c to assemble the tip shaft 4a, and the male supply pipe joint 13a of the lower half 4b. Is joined to the supply pipe female joint 13b of the upper half 4c, the lower half 4
b of the induction coil 34a is connected to the supply pipe female joint 13 of the upper half 4c.
It is arranged so as to face the induction coil 34b located in the vicinity of "b", and forms a resonance circuit between the induction coil 34a and the induction coil 34b. Both form a resonance circuit type non-contact connector. In the upper half 4c, the induction coil 34b is connected to an induction coil 36a embedded in the bottom of the top female shaft coupling 16a fixed to the top of the upper half 4c. When the depth to be drilled is small, the tip shaft 4 a is directly connected to the rotary power unit 3. As shown in FIG. 7, the rotary power unit 3 is provided with a downward male shaft joint 3 a for transmitting power to each of the drilling shafts 4.
a is directly connected to the rotary power unit 3, the downward female shaft joint 3a is connected to the top female shaft joint 16a of the tip shaft portion 4a.
Are joined. Since the induction coil 36b is buried at the distal end of the downward male shaft joint 3a of the rotary power unit 3, the induction coil 36a and the induction coil 36b face each other at the time of joining with the distal shaft portion 4a, and resonance occurs therebetween. A circuit is formed, and a resonance circuit type non-contact connector is formed. Induction coil 36
The signal line 37 from b is connected to an induction coil 39a embedded in a ring 38 fitted to the drive shaft.

When the depth to be drilled is large, one or several stages of intermediate shafts 4d are inserted and connected between the tip shaft 4a and the rotary power unit 3. As shown in FIG. 10, the intermediate shaft portion 4d has a bottom male shaft in which an induction coil 36b having the same configuration as the downward male shaft joint 3a of the rotary power unit 3 is embedded in the outer peripheral wall 17 and the bottom of the cement milk supply pipe 18. Fitting 15
Is fixed and an induction coil 36a having the same configuration as the top of the tip shaft 4a is embedded at the top.
Are fixed, and the induction coil 36a and the induction coil 36
b is connected by a signal line 35. Therefore, the connection between the intermediate shaft portion 4d and the rotary power unit 3 and the connection between the intermediate shaft portion 4d and the distal shaft portion 4a are performed by the above-described distal shaft portion 4a.
a and the rotary power unit 3 are connected in exactly the same way, the formation of a resonance circuit type non-contact connector between the induction coil 36a of the intermediate shaft 4d and the induction coil 36b of the rotary power unit 3, and the induction of the tip shaft 4a. The formation of a resonance circuit type non-contact connector between the coil 36a and the induction coil 36b of the intermediate shaft portion 4d is also possible.
This is the same as the formation of the resonance circuit type non-contact connector of the induction coil 36a of the tip shaft portion 4a and the induction coil 36b of the rotary power unit 3 described above.

A support plate 19 is fixed to the lower surface of the rotary power unit 3 so as to correspond to the positions of the two drilling shafts 4 on both ends. As is clear from FIGS. 7 and 8, the support plate 19 has a cross-sectional groove shape, and has four long holes 20 formed in parallel with the web portion. A mounting member 40 which hangs on the support plate 19
Is attached. 7 and 9, the mounting member 40 is composed of a top plate 41 and an H-shaped cross-section member 42 whose upper end surface is fixed to the top plate 41. The top plate 41 extends along the circumference. Four arc-shaped long holes 43 are formed, and a flat plate portion 44 is formed by cutting off a lower flange of the H-shaped cross-sectional member 42, and the flat plate portion 44 has two vertical lengths. A hole 45 is drilled. Then, the mounting member 40 makes the top plate 41 abut against the support plate 19, and forms the arc-shaped elongated hole 43.
A bolt is inserted into the long hole 20 corresponding to the above, the mounting direction is adjusted, and the nut is tightened. In the figure, reference numeral 46 denotes an instrument mounting member, which has an angled cross section and is provided at an end with an annular coil accommodating portion 47 for accommodating the fixed induction coil 39b. Is provided. The fixture mounting member 46 is configured such that a bolt passing through a pair of long holes 49 drilled at the base end thereof is inserted into the vertically long hole 45 of the mounting member 40, and the position of the fixed induction coil 39b passing through the drive shaft. Then, the position of the proximity sensor 48 is adjusted and the nut is tightened while being attached to the attachment member 40.

In this state, the induction coil 39a on the drive shaft is
Constitutes a resonance circuit type non-contact connector facing the fixed induction coil 39b, and can transmit to and receive from the on-axis transceiver 22 through the ground signal line 50 drawn from the fixed induction coil 39b. On the other hand, a pair of protruding small pieces 51 having different heights are erected at predetermined positions on the outer periphery of the coil accommodating portion 47, and each of a pair of upper and lower proximity sensors 48 provided on the receiver mounting member 46 is provided. At a predetermined rotational position, and by blocking the high-frequency magnetic flux lines constantly emitted from the proximity sensor 48, a proximity signal can be detected from the signal line 52. Can be always kept constant in the rotational direction. As described above, despite the fact that it has several shaft joints, and that it uses a transmitting and receiving device fixed to the rotating drill shaft 4, it has a resonant circuit type non-contact connector. The electrical connection is automatically performed by adopting, and transmission and reception between the ground transceiver and the on-axis transceiver 22 can be secured by simply forming a transmission path. However, there is also a mode in which part or all of the above-described resonance circuit type non-contact type connector is changed to a detachable contact type connector and used.

In FIG. 1, reference numeral 53 denotes a depth detector installed on the lower side surface of the reader 2. The depth detector 53 is installed to detect the drilling depth, and the other end of the depth detection wire 54 having one end attached to the lower part of the rotary power unit 3 is connected to a detection pulley housed in the depth detector 53. It is connected to a wire take-up drum which can be taken up and fed by a mainspring device via a mainspring. Therefore, the detection pulley rotates following the vertical movement of the rotary power unit 3, and the amount of the rotation is detected by the encoder.
, That is, the drilling depth can be detected as an electric signal.

FIG. 11 is a block connection diagram of a multi-axis rotary drilling machine equipped with a drilling shaft torsion measuring device. The two ground signal lines 50 electrically connected to the respective in-axis transceivers 22 in the pair of drilling shafts 4 are connected to the respective ground transceivers 55 accommodated in the cabin of the drilling machine base 1, The ground transceiver 55 is connected to a computing unit 57 via a measurement start switch 56. Therefore, the gradient signal detected by the both gradient detectors 21 is transmitted from the both-axes transmitter / receiver 22, received by the two-ground transceiver 55, and input to the calculator 57. Similarly, the arithmetic unit 57 receives the depth signal from the depth detector 53. The arithmetic unit 57 immediately calculates the twist between the pair of drilling axes from the inclination signal at each drilling axis 4 transmitted from the pair of intra-axes transceivers 22 and the depth signal from the depth detector 53. The indicator 58 connected to the computing unit 57 displays data obtained by sequentially measuring the measured values and the computed results, for example, drilling holes from a reference position in a horizontal cross section at the measured depth. Plotting data from which the displacement direction and displacement of the shaft can be directly read are displayed together with the measurement time. Similarly, in the recorder 59 connected to the calculator 57, measured values such as depth data obtained from the depth signal, double tilt data obtained from the tilt signals of the two drilling shafts 4, and one pair of calculation results are shown. The calculated value of torsion between the drilling axes is recorded together with the measurement time. Similarly, in the printer 60 connected to the computing unit 57, the measured values and the computation results at each depth stage in one construction process, and a pair of drilling axes in the entire construction process. Of the torsion history is printed continuously.

The arithmetic unit 57 is provided with a transmitting means 62 for transmitting the measured values and the calculation results to a remote place. The processing means analyzes and analyzes the measured values and the calculation results at the remote place. It is possible to correct the construction plan in a short time. A signal line from the proximity sensor 48 is connected to an axis position indicator 61 installed near the measurement start switch 56. When measuring the gradient sequentially, the drilling axis 4
If the rotation direction position is not always fixed at a fixed position and the measurement is not performed, the rotation direction position of the tilt detector 21 in the drilling shaft 4 is not constant, and the detected value is meaningless. Therefore, in order to stabilize the rotational position during measurement of the drilling shaft 4 for sequentially measuring the inclination, the proximity sensor 48 detects a constant location on the circumference of both the drilling shafts 4 whose inclination is to be measured, and performs the inclination measurement. The positions of the two drilling shafts 4 to be performed in a certain rotational direction are displayed on the shaft position display 61 to confirm the positions. Then, at the time of measuring the inclination, after confirming that the rotational direction positions of the two drilling shafts 4 have become constant positions by the shaft position display 61, the measurement start switch 56 is operated, and the measurement start signal is transmitted from the ground transceiver 55. The signal is transmitted to the on-axis transceiver 22, and the detection of the inclination is started. There is also a mode of measurement using a gyro in order to omit the confirmation of the rotational direction position of the drilling shaft 4 every time the inclination is measured. That is, a gyro for generating an azimuth signal is attached to the inclination detector 21 provided inside the drilling shaft 4 for which inclination measurement is to be performed, and the inclination signal from the inclination detector 21 and the azimuth signal at the time of inclination detection from the gyro are used. On-axis transceiver 2
2 and process these signals on the ground,
The azimuth signal is used to correct the position of the drilling shaft 4 in the rotation direction at the time of measuring the inclination, so as to make it constant.

Next, based on the above embodiment, the use of a multi-axis rotary drilling machine equipped with the drilling shaft twist measuring device according to the present invention will be described. Prior to the start of drilling, the tips of both drilling shafts are positioned at a point corresponding to a depth of 0 m, and the rotation direction positions of both drilling shafts 4 for which inclination measurement is to be performed are confirmed and confirmed by the display of the dual shaft position indicator 61. At this position, the arithmetic unit 57 is made to recognize that the current depth is 0 m by a reset operation, and by operating the measurement start switch 56, a measurement start signal is transmitted from both ground transceivers 55 to the both-axes transceiver 22, and both inclinations are measured. By operating the detector 21, the inclination of both drilling shafts 4 is detected, the inclination signal is transmitted from the intra-axes transmitter / receiver 22 to the ground transmitter / receiver 55 and input to the calculator 57,
The torsion between the two drilling axes is calculated from the two inclination signals at the drilling start position, and the measured value measured at the depth of 0 m and the graphed data of the calculated result are displayed on the display 58 together with the measurement time. At the same time, the recorder 59 records both the inclination data at the depth of 0 m and the twist between the drilling axes together with the measurement time. Next, the underground drilling operation is started, and when the drilling has progressed to a predetermined depth, the drilling shafts 4 are matched with the rotation direction positions at which the determined tilt measurement is performed by the display of the shaft position indicator 61. Pause drilling at the location. At the stop position, a depth signal from the depth detector 53 is input to the arithmetic unit 57, and both inclination detectors 2 are activated by a measurement start signal from the ground.
The inclination signal from 1 is input to the calculator 57, the torsion between the two drilling axes at the predetermined depth is calculated by the calculator 57, and the measured value measured at the predetermined depth and the calculated calculation result are displayed on the display 58. Is displayed together with the measurement time, and the recorder 59 records both the inclination data at a predetermined depth and the twist between the drilling axes together with the measurement time. Such a measurement operation is repeatedly performed until both drilling axes reach the maximum depth and one construction process is completed.

When one construction process is completed, the printer 60 sets the measured values and the calculation results at each depth stage of the construction process, and a pair of drilling shafts in the entire construction process. A torsion diagram in which the torsion histories between them are continuously plotted is printed. In addition, in the previous construction process prior to this construction process, that is, in the construction process of the previous underground wall element adjacent to the underground wall element created in this construction process during continuous underground wall construction. If the torsion calculation results of both drilling shafts for each depth that have already been measured and calculated are input to the calculator 57 in advance, and the calculation is compared with the current measurement values and the calculation results, the underground created last time The situation of inconsistency between the wall elements and the underground wall elements created this time due to the difference in torsion can be confirmed.

[0019]

The present invention has the following effects. A. The inclination measuring instrument attached to the tip of the drilling shaft is combined with the in-axis transmitter / receiver to measure the inclination of the drilling shaft tip at an arbitrary depth of the drilling shaft by remote control. Does not require direct operation from. B. Since the intra-axial transceiver and the ground transceiver provided on the drilling machine base are connected by a separable transmission path, not only the case of the unit drilling shaft alone but also a plurality of middle shafts are connected. Even when a long drilling shaft is used, transmission and reception between both transmitters and receivers can be performed without any trouble. C. In the drilling machine base on the ground, the torsion between both drilling axes is immediately calculated by the calculator directly connected to the inclination measurement signal and the depth measurement signal of both drilling axes at an arbitrary depth, and the calculation result is shown in FIG. Since it is displayed on the display immediately after being converted, it is possible to confirm the torsion state at an arbitrary depth simultaneously with each measurement. D. All equipment related to torsion measurement between drilling axes
It is mounted on one excavator, and it is not necessary to separately prepare equipment for measurement at the time of measurement, and a long time due to performing measurement by separating the drilling axis during construction to use separately prepared equipment The excavator itself completes all the measurement work without any interruption of the construction work and does not cause an artificial measurement error due to manual operation, so that the measurement work can be easily performed.

[Brief description of the drawings]

FIG. 1 is a side view of a multi-axis rotary drilling machine equipped with a drilling shaft twist measurement device.

FIG. 2 is a front view showing a drilling shaft of the multi-axis rotary drilling machine.

FIG. 3 is a side view, partially cut away, showing a tip shaft portion.

FIG. 4 is a side view, partially cut away, showing a main part of a lower half part of a tip shaft part.

FIG. 5 is a cutaway perspective view showing an attached state of the inclination measuring device.

FIG. 6 is a cross-sectional view of the lower half of the tip shaft.

FIG. 7 is a side view, partially cut away, showing a lower portion of the rotary power unit.

FIG. 8 is a bottom view of the support plate.

FIG. 9 is a top view of the mounting member.

FIG. 10 is a side view of the intermediate shaft part with a partial cross section cut away.

FIG. 11 is a block connection diagram of a drilling shaft torsion measuring device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 drilling machine base 3 rotary power unit 4 drilling shaft 21 inclination detector 22 on-axis transceiver 48 proximity sensor 51 projecting piece 53 depth detector 55 ground transceiver 57 computing unit 58 display 59 recorder 60 printer 62 transmission means

Continuation of front page (56) References JP-A-59-44419 (JP, A) JP-A-57-48016 (JP, A) JP-A-55-75015 (JP, A) JP-A-5-86613 (JP) , A) Jpn. Sho 62-72345 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02D 3/12 102 E02F 5/02

Claims (5)

(57) [Claims] 1. A multi-axis rotary drilling machine having a plurality of row drilling shafts vertically suspended on a drilling machine base,
A tilt detector integrally mounted in a pair of drilling shaft tips located at intervals of rows, an in-axis transmitter / receiver coupled to the tilt detector, and the drilling machine base. A ground transmitter / receiver for transmitting / receiving data to / from both of the on-axis transceivers, and a ground transmitter / receiver provided on the drilling machine body fixed to the two on-axis transceivers mounted on the rotating drilling shaft. A detachable transmission path connecting the drilling machine, a depth detector for measuring a depth of a tip portion of the drilling shaft by a relative displacement between the drilling machine base and the drilling shaft, and a drilling machine base. A calculator for calculating the torsion between the two drilling axes based on both the drilling axis tilt measurement signal from the ground transceiver and the depth measurement signal from the depth detector, and plotting each measurement value and calculation result And a display device for displaying. Rotary drilling machine. 2. The arithmetic unit includes a recorder for recording the measurement values and the computation result at each measurement time, and a recording unit for sequentially recording at an arbitrary measurement depth in one drilling process. The drilling shaft torsion measuring apparatus according to claim 1, further comprising a printer for printing a torsion diagram in which a torsion history between the drilling axes created from the recorded contents is printed together with the recorded contents. Multi-axis rotary drilling machine equipped. 3. The drilling shaft according to claim 1, wherein the arithmetic unit is provided with a transmission unit for transmitting the measured values, the calculation results, and the like to a remote place. Multi-axis rotary drilling machine equipped with a torsion measuring device. 4. A protruding small piece is erected at a predetermined position on an outer periphery of a pair of the drilling shafts to which the inclination detector is mounted, and is attached to the drilling machine base so as to be vertically movable. A proximity sensor facing the projecting small piece according to the rotation of each drilling shaft is attached to a portion of the rotary power unit of the drilling shaft that approaches the outer periphery of the drilling shaft, The drilling shaft torsion measuring device according to any one of claims 1 to 3, wherein the rotation direction position at the time of measuring the inclination sequentially performed on each of the drilling shafts is made constant by a signal of a drilling machine. Multi-axis rotary drilling machine equipped. 5. A gyro is attached to one of the two drilling shafts to which the inclination detector is attached, in close proximity to the inclination detector, and the intra-axes transmitter / receiver transmits the gyro along with the inclination measurement signal. A gyro-generated azimuth signal is transmitted, and the terrestrial transceiver receives an azimuth signal in conjunction with the tilt measurement signal, and the tilt measurement is sequentially performed for each of the drilling axes by the azimuth signal. The multi-axis rotary drilling machine equipped with the drilling shaft torsion measuring device according to any one of claims 1 to 3, wherein the rotation direction position at the time is corrected so as to be constant.