JP3948653B2 - Information / power transmission device for drilling machine and information / power transmission drilling tube unit for use in the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a signal transmission pipe device such as a drill rod used in a drilling device having a detector such as an inclinometer.
[0002]
[Prior art]
When excavating the ground with an excavator, there is a method in which a plurality of excavation rods are sequentially connected and a detector is provided at the tip of the connected excavation rods. The detector is provided for controlling excavation based on the value obtained by the detector. For example, an inclinometer is provided as a detector for excavating the ground vertically, and the inclinometer is obtained. The value is converted into a signal, this signal is transmitted to the ground via a signal transmission cable provided in the excavation rod body, and the inclination angle of the excavation rod is adjusted vertically based on the transmitted signal. That is done. When the signal transmission cable is passed through the excavation rod body in this manner, the cable must also be connected when the excavation rod is coupled.
[0003]
Therefore, as a method for connecting the cables, a method of electrically joining the cables using a non-contact type electric transmitter or a metal outlet is generally known.
[0004]
[Problems to be solved by the invention]
However, first, the method using a non-contact type electric transmitter cannot maintain the gap between both terminals properly, especially when the connection work is frequently performed, and therefore the accuracy of the signal is reduced. There's a problem.
[0005]
Further, the method using a metal outlet has a problem that it is dangerous and takes a long time because the connection of the metal outlet is performed directly under the pipe device and manually.
[0006]
Furthermore, in any of these methods, there is a problem that the structure of the drilling rod and the electrical system become complicated when a plurality of electric paths are formed.
[0007]
Therefore, an object of the present invention is to enable both transmission of information and power supply without forming a plurality of electric circuits, while simplifying the structure of the drilling rod and the electric system and enabling good conduction. It is to be able to be easily connected.
[0008]
[Means for Solving the Problems]
The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
When drilling using a drilling machine that supports the drilling rod by the base machine, the measuring instrument provided in the drilling rod, the power supply device and the receiving device installed outside the rod are placed inside the rod. Drilling machine connected via a single-core cable that passes through, and transmits information from the measuring device to the receiving device and supplies power from the power supply device to the measuring device via a common single-core cable by spread spectrum modulation An information / power transmission device in
The drilling rod is composed of a plurality of rod units each having a connector provided in both end portions and a single-core cable connecting the connectors. By sequentially connecting the rod units in the longitudinal direction, the connectors of the rod units are connected to each other. Is configured to connect automatically ,
The measuring device is provided in the drill rod in a state of being mounted in a case, and the case is held apart from the inner wall of the rod via a spherical spacer,
An earth electrical circuit that connects the power supply device and the measuring device is configured to be formed through a tube wall of the drilling rod, the spherical spacer, and the case .
An information / power transmission device for a drilling machine characterized by the above.
[0009]
(Function and effect)
The present invention can be applied to a case where the drilling rod is a single pipe or a case where a multi-pipe more than a double pipe is used for cable protection. In any case, in the present invention, transmission of information from the measuring device to the receiving device and power supply from the power supply device to the measuring device are performed via a common single-core cable by the spread spectrum modulation method. Accordingly, both information transmission and power supply can be performed without forming a plurality of electric circuits, so that the structure of the drilling rod and the electrical system can be simplified.
[0010]
Moreover, the drilling rod of the present invention comprises a plurality of rod units each having a connector provided in both end portions and a single-core cable connecting these connectors, and each rod unit is connected by sequentially connecting the rod units in the longitudinal direction. Since the connectors of the units are configured to be automatically connected to each other, they can be easily connected without degrading the signal accuracy.
Moreover, it is preferable to store a measuring device in a case from a dust-proof and waterproof viewpoint. In this case, the earth electric circuit connecting the power supply device and the measuring device can be provided on the tube wall of the drilling rod through the case. However, when the case is connected to the drilling rod directly to achieve conduction, when the drilling rod bends intentionally or naturally during the ground insertion process, the case breaks or the contact part dissociates and the earth circuit is disconnected. There is a risk of being blocked.
The present invention also solves this problem. In the present invention, the case for storing the measuring device is held apart from the inner wall of the rod via a spherical spacer, and this spherical spacer forms an earth circuit that connects the case and the tube wall of the drilling rod. Therefore, even if the drilling rod is bent, the case containing the measuring device can move along the spherical surface while maintaining contact with the spherical spacer, and the grounding circuit is maintained in a conductive state. Destruction is less likely to occur.
[0011]
<Invention of Claim 2>
The power supply device supplies DC power, a plus electric circuit connecting the power supply device and the measuring device is formed via the cable, and an earth electric circuit connecting the power supply device and the measuring device is the body of the base machine, The information / power transmission device for a drilling machine according to claim 1, wherein the information / power transmission apparatus is configured to be formed through a tube wall of a drilling rod , the spherical spacer, and the case .
[0012]
(Function and effect)
If the grounding electric circuit connecting the power supply device and the measuring device is formed via the drilling rod, it is not necessary to provide a separate cable. In this case, it becomes a problem how to form a ground electric circuit from the rotating drilling rod to the external power supply device that does not rotate. For this purpose, a slip ring is conventionally provided at the base end of the drilling rod, and this configuration can also be adopted in the present invention. However, more preferably, when the ground electric circuit to the power supply device is formed not through the slip ring but through the body of the base machine in electrical communication with the drilling rod as described in claim 2, the device configuration is simplified. It is preferable because it can be realized.
[0013]
<Invention of Claim 3>
The rod unit has a tubular body and a single-core cable provided in the tubular body, and is sequentially connected in the longitudinal direction to form a longer integrated pipe in which single-core cables are connected to each other. A hole tube unit,
One end is a male joint and the other end is a female joint, or both ends are a male joint or a female joint,
The male joint part has a male holder fixed in the joint part. The male holder is supported by the male holder convex part protruding from the opening side and further from the tip of the male holder convex part. Including a male electrode configured to protrude,
The female joint portion has a female holder fixed in the joint portion. The female holder includes a continuous proximal end cylindrical portion and a distal end cylindrical portion, and a proximal end cylindrical portion of the female holder. Including a female electrode housed in
A ring-shaped seal member is provided on at least one of the outer peripheral surface of the male holder convex portion and the inner peripheral surface of the distal end side cylindrical portion of the female holder,
The electrode in one joint part and the electrode in the other joint part are always in an electrically conductive state via the single core cable passing through the pipe body,
At the time of connection with another drilling tube unit, the male electrode of one drilling tube unit automatically fits into the female electrode of the other drilling tube unit and becomes electrically conductive. The outer peripheral surface of the portion and the inner peripheral surface of the cylindrical portion on the distal end side of the female holder are in close contact with each other via the ring-shaped sealing member, and both the fitted male electrode and female electrode are the male holder and the ring. The information / power transmission device for a hole drilling machine according to claim 1 or 2, wherein the information / power transmission device is configured to be automatically sealed in a space surrounded by a cylindrical seal member and a female holder .
[0014]
(Function and effect)
The same effects as those of the invention of the fourth aspect are achieved.
[0015]
[0016]
<Invention of Claim 4>
This is an information / power transmission drilling tube unit that has a tubular body and a single-core cable provided in the tubular body, and that is sequentially connected in the longitudinal direction to form a longer integrated pipe connected to each other. And
One end is a male joint and the other end is a female joint, or both ends are a male joint or a female joint,
The male joint part has a male holder fixed in the joint part. The male holder is supported by the male holder convex part protruding from the opening side and further from the tip of the male holder convex part. Including a male electrode configured to protrude ,
The female coupling part has a knife holder which is fixed in the joint portion, the knife holder includes a base end side tubular portion contiguous and distal tubular portion, the proximal cylindrical portion of the knife holder Including a female electrode housed in
A ring-shaped seal member is provided on at least one of the outer peripheral surface of the male holder convex portion and the inner peripheral surface of the distal end side cylindrical portion of the female holder,
The electrode in one joint part and the electrode in the other joint part are always in an electrically conductive state via the single core cable passing through the pipe body,
At the time of connection with another drilling tube unit, the male electrode of one drilling tube unit automatically fits into the female electrode of the other drilling tube unit and becomes electrically conductive. parts and the outer peripheral surface and the inner peripheral surface of the distal tubular portion of the knife holder of in close contact with the liquid-tight through the ring-shaped seal member, both of the mated male electrode and female electrode the Osuhoruda, ring in a space surrounded by Jo sealing member and knife holder are configured to be automatically sealed,
A drilled tube unit for information and power transmission.
[0017]
(Function and effect)
The present invention, even if the tubular body of the single tube, also are those applicable even if there is a multi-tube above the double tube for cable protection, such as above SL, using spread spectrum modulation It can be suitably used for an information / power transmission device in a drilling machine.
[0018]
In the information and power transmission hole tube unit of the present invention, the male electrode of one hole tube unit is automatically inserted into the female electrode of the other hole tube unit when connected to another hole tube unit. Engage and enter a conductive state. In this way, by fitting and connecting in a male-female relationship, a reliable connection without a decrease in accuracy can be achieved.
[0019]
In particular, the present invention is configured so that both the male electrode and the female electrode are automatically sealed in a space surrounded by the male holder and the female holder when connected to another drilling tube unit. Therefore, it is particularly suitable for the case where a liquid having electrical conductivity such as drilling water is circulated through the pipe, such as a drilling rod of a drilling machine, and a short circuit or contamination of the electrode occurs through the liquid. It is hard to do .
[0020]
<Invention of Claim 5>
5. The information / power transmission drilled tube unit according to claim 4, wherein a liquid having electrical conductivity is circulated therein.
[0021]
(Function and effect)
Short circuit through liquid is less likely to occur.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
<Information and power transmission equipment for drilling machines>
FIG. 1 shows an information / power transmission apparatus according to the present invention incorporated into a general drilling machine 1 that supports a drilling rod 2 by a base machine 1B. Reference numeral 1M denotes a rotational drive source of the drilling rod 2.
[0023]
A measuring device 3 is housed in the distal end of the drilling rod 2, while a receiving device 4 and a power supply device 5 are installed in the vicinity of the base machine 1B, and these are located at the base end of the drilling rod 2. The connected slip ring 4S and the single core cable 2c passing through the rod are connected to each other. Although not shown, the measuring device 3 and the receiving device 4 each have a known configuration such as an impedance matching circuit and a modulation / demodulation circuit for communication using a spread spectrum modulation system.
[0024]
The power supply device 5 supplies DC power to the measuring device 3, and a battery such as a lead storage battery can be used simply. The positive side of the power supply device 5 and the input / output terminals of the receiving device 4 are connected to the common electrical path of the slip ring 4S via cables 5c and 4c, respectively, and the common inside the drill rod 2 via this slip ring 4S. The single-core cable 2c is always in a conductive state.
[0025]
On the other hand, the drilling rod 2 is mainly composed of a plurality of rod units 2u having connectors c1 and c2 provided in both ends and a single-core cable 2c connecting the connectors. By sequentially connecting, the connectors of the rod units are automatically connected to each other. The drilling rod 2 can have a multi-pipe structure of a double tube or more by providing a protective tube surrounding the cable inside or by mounting other tubes outside the drilling rod.
[0026]
Thus, by using the constructed drilling rod 2, the connectors of each rod unit are automatically connected to each other by simply adding a new rod unit 2 u to the drilling rod 2. Is formed automatically. Therefore, the connection work between the cables, which has been conventionally required, becomes unnecessary, and the workability is remarkably improved.
[0027]
In addition, since the spread spectrum modulation method is used as the information transmission method, communication with the measuring instrument and power supply from the power source can be achieved with only one single-core cable, simplifying the structure of the drilling rod and the electrical system In addition, the high noise resistance of the spread spectrum modulation system also provides an advantage of enabling reliable signal transmission with less noise.
[0028]
In particular, when the DC power supply 5 is used, as shown in the drawing, the ground electric circuit connecting the power supply 5 and the measuring device 3 is connected to the tube wall of the drilling rod 2 and the base machine 1B in electrical communication with the drilling rod 2. When the grounding electric circuit to the power supply device 5 is formed through the body, it is possible to simplify the device configuration, for example, it is not necessary to provide an electrode for the grounding electric circuit in the slip ring 4S.
[0029]
On the other hand, the measuring device 3 that is housed in terms of dust and water into the case 3c. In this case, an earth electrical circuit connecting the power supply device 5 and the measuring device 3 can be taken on the tube wall of the drilling rod 2 via the case 3c. However, when the case 3c is brought into direct contact with the drilling rod 2 for conduction, when the drilling rod 2 is intentionally or naturally bent during the ground insertion process, the case 3c is broken or the contact portion is dissociated. There is a risk that the earth circuit will be interrupted . To prevent this, the storage case 3c are spaced at an internal wall surface of the drilled rod 2 via a spherical spacer 6,6, and the spherical spacers 6,6 and a case 3c and the drilling rod 2 tube wall forming a ground path which connects.
[0030]
Detailed examples of this spherical spacer portion are shown in FIGS. In this example, the case 3c has a cylindrical shape, and its base end opening is covered with a columnar electrode holder 3h formed of an insulating material. The male electrode m is coaxially formed from the base end of the electrode holder 3h. Is protruding. The electrode holder 3h and the male electrode m correspond to the connector c1 referred to in the present invention. On the outer peripheral surface of the base end portion of the case 3c, a concave groove 3d having an arc-shaped cross section extends from the base end of the case 3c to the front end side to the predetermined limit along the axial direction. A similar concave groove 2d is also formed on the inner peripheral surface, and one end and the other end of the spherical spacer 6 are fitted into the concave grooves 3d and 2d, respectively. Thus, the case 3c is held away from the inner circumferential surface of the rod. In order to maintain the distance, as shown in FIG. 3, it is preferable that two or more, particularly three or more of the concave grooves 3d and 2d are arranged so that their mutual intervals are equal. In addition, since the connection structure with the other rod unit 2u is fundamentally the same as that of the drilling pipe unit mentioned later, details are given later.
[0031]
Thus, even if the drilling rod 2 is bent, the case 3c housing the measuring device 3 can move along the spherical surface while maintaining contact with the spherical spacer 6, and the earth circuit is in a conductive state. The case 3c is hardly broken. Recently, a method of making a curved hole using a bendable drilling rod has been developed, and the form using this spherical spacer 6 is particularly suitable for such a method.
[0032]
<About drilling pipe unit for information and power transmission>
Next, it will be described in detail embodiments of the drilling tube unit which is suitably used as a rod unit definitive to the transmission device. 4 is an overall view of a drilled tube unit example 2u according to the present invention, FIGS. 5 and 6 are enlarged longitudinal sectional views of one end and the other end, and FIG. 12 is a longitudinal sectional view showing a connection procedure. FIG. As can be seen from these drawings, the drilling tube unit 2u of the present embodiment has a tube B and a single-core cable C provided in the tube B, and is sequentially connected in the longitudinal direction, so that A longer integrated pipe is formed in which the core cables C are connected to each other.
[0033]
One end of the pipe unit 2 u is a slightly small-diameter male joint portion 20, and a diameter-enlarged portion 21 for attaching a holder is formed in the male joint portion 20. A male holder 22 having a circular cross section is coaxially inserted and fitted into the enlarged diameter portion 21 and fixed by a retaining ring 22c. As shown in FIG. 7, the male holder 22 includes a large-diameter portion 22 a having a shape that fits into the enlarged-diameter portion 21 and a small-diameter male holder convex portion 22 b that protrudes toward the opening side. The through-hole 22h is formed along the center axis, and the seal rings 22r and 22r are fitted in the groove 22d along the circumferential direction formed on the outer peripheral surface of the male holder convex portion 22b.
[0034]
The male electrode m is configured to be coaxially supported by the male holder convex portion 22b with respect to the axis of the tube B and further protrude from the tip of the male holder convex portion 22b. For this reason, in the illustrated example, the electrode mounting through hole 22h of the male holder 22 has a slightly small diameter at the tip of the holder convex portion 22b, while the male electrode m has an intermediate large diameter portion m1 as shown in FIG. It is formed in the rod shape which has. The intermediate large-diameter portion m1 can be separately formed from a resin or the like and integrated with the main body portion. Thus, by inserting the male electrode m into the electrode mounting through hole 22h of the male holder 22 from the proximal end side, the intermediate large diameter portion is caught by the small diameter portion 22e of the holder 22, and in this state, the distal end of the male electrode m is It protrudes through the tip of the male holder convex portion 22b. In this state, the male electrode m can be fixed to the male holder 22 by filling the gap around the male electrode m with a filling adhesive bd such as a bond.
[0035]
Further, a connection portion m2 to which one end of the cable C is connected by crimping or soldering is provided at the proximal end portion of the male electrode m. In this case, after connecting the end portion of the cable C to the base end portion of the male electrode m as shown in the figure, even if the base end portion of the cable C is included, the male holder 22 is inserted into the electrode mounting through hole 22h. It is desirable to fix against.
[0036]
On the other hand, as shown in FIG. 6, the other end of the tube unit 2u is a female joint portion 30 having a slightly smaller diameter into which the male joint portion 20 of another unit is inserted and fitted. Is formed with a reduced diameter portion 31 for attaching the holder. A female holder 32 having a circular cross section is coaxially inserted and fitted into the reduced diameter portion 31 and fixed by a retaining ring 31c. The illustrated female holder 32 is formed by integrating a mounting portion 33 and a cover portion 34 with respect to a rod holder by bonding or the like. More specifically, as shown in FIG. 9, the attachment portion 33 is formed with an electrode attachment through-hole 33 h having a small diameter portion 33 c along the central axis, while the cover portion 34 is shown in FIG. 10. As shown in the figure, it is a cylindrical member having a distal end side large diameter portion 34 a and a proximal end small diameter portion 34 b, and the proximal end small diameter portion 34 b of the cover portion 34 is formed on the electrode mounting through-hole 33 h of the mounting portion 33. It is inserted from the tip opening and integrated by bonding or the like.
[0037]
In the female holder 32 thus formed, the base end portion of the electrode mounting through hole 33h in the mounting portion 33 and the base end side small diameter portion 34b of the cover portion 34 form the “base end side cylindrical portion” of the present invention. The front end side large diameter portion 34a of the cover portion 34 constitutes the “front end side cylindrical portion” of the present invention, and these inner spaces are coaxially continuous.
[0038]
The female electrode f is accommodated coaxially with respect to the axial center of the tube B in the proximal end side cylindrical portion of the female holder 32. Therefore, in the illustrated example, the distal end portion 34c of the proximal end side small diameter portion 34b of the cover portion 34 has a slightly small diameter, and the female electrode f inserted from the proximal end side into the female holder 32 is pulled by the small diameter portion 34c. In this state, the female electrode f does not reach the distal end side large diameter portion 34a of the cover portion 34, but is accommodated in a range within the proximal end portion of the electrode mounting through hole 33h and the proximal end side small diameter portion 34b of the cover portion 34. It is configured to be. In this state, the female electrode f can be fixed to the female holder 32 by filling the gap around the female electrode f with a filling adhesive bd such as a bond.
[0039]
Further, as shown in FIG. 11, the female electrode f has a male electrode insertion hole f1 having a predetermined depth from the distal end surface. In order to maintain the contact with the outer peripheral surface of the male electrode m, it is preferable that the insertion hole is formed with a cut at the side and is crushed by the amount of the cut. Thus, when the male electrode m is inserted into the male electrode insertion hole f1 of the female electrode f, the male electrode m is inserted while the insertion hole f1 is expanded, and the insertion hole inner surface and the male electrode outer surface are restored by the restoring force of the insertion hole. Contact with is always maintained.
[0040]
Further, a connection portion f2 to which one end of the cable C is connected by crimping or soldering is provided at the proximal end portion of the female electrode f in the same manner as the male electrode m. In this case, after connecting the end portion of the cable C to the proximal end portion of the female electrode m as shown in the drawing, these are inserted into the female holder 32 including the proximal end portion of the cable C and fixed to the female holder 32. It is desirable to do the same as in the case of the male joint 20.
[0041]
Thus, in the drilled tube unit 2u according to the present invention, as shown in FIG. 12, when connected to another drilled tube unit 2u, the male electrode m of one drilled tube unit 2u is connected to the other drilled tube unit 2u. The tube unit 2u is automatically fitted into the female electrode f to be in an electrically conductive state. In this way, by fitting and connecting in a male-female relationship, a reliable connection without a decrease in accuracy can be achieved. In particular, at this time, the outer peripheral surface of the male holder convex portion 22b and the inner peripheral surface of the distal end side cylindrical portion (the distal end side large diameter portion 34a) of the female holder 32 are brought into close contact via the seal ring 22r and fitted. Both the electrode m and the female electrode f are automatically sealed in a space sp surrounded by the male holder 22, the seal ring 22 r and the female holder 32. Therefore, it is particularly suitable when a liquid having electrical conductivity such as drilling water is circulated through the pipe, such as a drilling rod of a drilling machine, and an advantage that short-circuiting or the like through the liquid is less likely to occur. Will also be brought.
[0042]
<Others>
(Ii) In the above-described drilled tube unit, as shown in the figure, both the male electrode m and the female electrode f are configured not to protrude from the opening of the tube B, or although not shown, when the tube units are connected to each other, It is preferable to provide an open / close lid that opens and closes automatically or manually by the insertion force of the tube unit, since waterproofing and antifouling can be achieved in the tube.
[0043]
(B) In the above drilled tube unit example, the seal ring 22r is provided on the outer peripheral surface of the male holder convex portion 22b. However, the seal ring 22r is provided on the inner peripheral surface of the distal end side cylindrical portion (front end side large diameter portion 34a) of the female holder 32. Alternatively, both the male holder 22 and the female holder 33 may be provided.
[0044]
(Ha) The above-mentioned drilled tube unit example is a male / female tube unit having one end as a male joint 20 and the other end as a female joint 30. This includes a male / male tube unit that includes a male holder, and a female / female tube unit that includes both ends as female joints (including a female electrode and a female holder). In this case, the male / male tube unit and the female / female tube unit can be alternately connected, or the male / female tube unit can be appropriately combined.
[0045]
(Ii) In the above-described drilling tube unit example, the material of each part may be selected as appropriate. However, when applied to the information and power transmission device in the above-described drilling machine, the pipe body is formed of a conductive material, In order to insulate this from the electrodes m and f and the cable C, the holders 22 and 32 and the adhesive can be formed of an insulating material. Since the holders 22 and 32 have a role of securely holding the electrode in addition to the role of insulation, it is desirable that the holders 22 and 32 be formed of a hard insulating material such as hard vinyl chloride.
[0046]
【The invention's effect】
As described above, according to the present invention, it is possible to both transmit information and supply power without forming a plurality of electric circuits, and to simplify the structure of the drilling rod and the electrical system. Another object of the present invention is to enable easy connection while enabling good conduction. In particular, in the hole drilling tube unit of the present invention, the electrode can be hermetically sealed while enabling simple connection, and a short circuit and contamination of the electrode can be effectively prevented.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an example of an information / power transmission device in a drilling machine according to the present invention.
FIG. 2 is a partially broken front view showing a detailed example of a spherical spacer portion.
FIG. 3 is a right side view of FIG. 2;
FIG. 4 is a partially cutaway front view of a drilled tube unit according to the present invention.
FIG. 5 is a longitudinal sectional view of a male joint portion.
FIG. 6 is a longitudinal sectional view of a female joint part.
FIG. 7 is a partially broken front view of the male holder, and (b) a right side view.
8A is a left side view of a male electrode, and FIG. 8B is a front view thereof.
9A is a left side view of the mounting portion, and FIG. 9B is a partially broken front view thereof.
10A is a left side view of the cover portion, and FIG. 10B is a partially cutaway front view thereof.
11A is a front view of a female electrode, and FIG. 11B is a right side view thereof.
FIG. 12 is a longitudinal sectional view showing a connection state of the pipe unit.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Drilling machine, 1B ... Base machine, 1M ... Rotary drive source, 2 ... Drilling rod, 2c ... Single core cable, 2u ... Pipe unit, 3 ... Measuring instrument, 4 ... Receiving device, 5 ... Power supply device, 6 DESCRIPTION OF SYMBOLS ... Spherical spacer, 20 ... Male joint part, 22 ... Male holder, 22r ... Seal ring, m ... Male electrode, C ... Single core cable, 32 ... Female holder, 34 ... Cover part, f ... Female electrode, c1, c2 ... Connector.

Claims (5)

When drilling using a drilling machine that supports the drilling rod by the base machine, the measuring instrument provided in the drilling rod, the power supply device and the receiving device installed outside the rod are placed inside the rod. Drilling machine connected via a single-core cable that passes through, and transmits information from the measuring device to the receiving device and supplies power from the power supply device to the measuring device via a common single-core cable by spread spectrum modulation An information / power transmission device in
The drilling rod is composed of a plurality of rod units each having a connector provided in both end portions and a single-core cable connecting the connectors. By sequentially connecting the rod units in the longitudinal direction, the connectors of the rod units are connected to each other. Is configured to connect automatically ,
The measuring device is provided in the drill rod in a state of being mounted in a case, and the case is held apart from the inner wall of the rod via a spherical spacer,
An earth electrical circuit that connects the power supply device and the measuring device is configured to be formed through a tube wall of the drilling rod, the spherical spacer, and the case .
An information / power transmission device for a drilling machine characterized by the above. The power supply device supplies DC power, a plus electric circuit connecting the power supply device and the measuring device is formed via the cable, and an earth electric circuit connecting the power supply device and the measuring device is the body of the base machine, The information / power transmission device for a drilling machine according to claim 1, wherein the information / power transmission apparatus is configured to be formed through a tube wall of a drilling rod , the spherical spacer, and the case . The rod unit has a tubular body and a single-core cable provided in the tubular body, and is sequentially connected in the longitudinal direction to form a longer integrated pipe in which single-core cables are connected to each other. A hole tube unit,
One end is a male joint and the other end is a female joint, or both ends are a male joint or a female joint,
The male joint part has a male holder fixed in the joint part. The male holder is supported by the male holder convex part protruding from the opening side and further from the tip of the male holder convex part. Including a male electrode configured to protrude,
The female joint portion has a female holder fixed in the joint portion. The female holder includes a continuous proximal end cylindrical portion and a distal end cylindrical portion, and a proximal end cylindrical portion of the female holder. Including a female electrode housed in
A ring-shaped seal member is provided on at least one of the outer peripheral surface of the male holder convex portion and the inner peripheral surface of the distal end side cylindrical portion of the female holder,
The electrode in one joint part and the electrode in the other joint part are always in an electrically conductive state via the single core cable passing through the pipe body,
At the time of connection with another drilling tube unit, the male electrode of one drilling tube unit automatically fits into the female electrode of the other drilling tube unit and becomes electrically conductive. The outer peripheral surface of the portion and the inner peripheral surface of the cylindrical portion on the distal end side of the female holder are in close contact with each other via the ring-shaped sealing member, and both the fitted male electrode and female electrode are the male holder and the ring. The information / power transmission device for a hole drilling machine according to claim 1 or 2, wherein the information / power transmission device is configured to be automatically sealed in a space surrounded by a cylindrical seal member and a female holder . This is an information / power transmission drilling tube unit that has a tubular body and a single-core cable provided in the tubular body, and that is sequentially connected in the longitudinal direction to form a longer integrated pipe connected to each other. And
One end is a male joint and the other end is a female joint, or both ends are a male joint or a female joint,
The male joint portion has a Osuhoruda fixedly mounted in the fitting portion, the Osuhoru Da and Osuhoruda protrusion protruding on the opening side, from the tip of and Osuhoruda protrusion is supported by the Osuhoruda protrusion And a male electrode configured to protrude further ,
The female coupling part has a knife holder which is fixed in the joint portion, the knife holder includes a base end side tubular portion contiguous and distal tubular portion, the proximal cylindrical portion of the knife holder Including a female electrode housed in
A ring-shaped seal member is provided on at least one of the outer peripheral surface of the male holder convex portion and the inner peripheral surface of the distal end side cylindrical portion of the female holder,
The electrode in one joint part and the electrode in the other joint part are always in an electrically conductive state via the single core cable passing through the pipe body,
At the time of connection with another drilling tube unit, the male electrode of one drilling tube unit automatically fits into the female electrode of the other drilling tube unit and becomes electrically conductive. parts and the outer peripheral surface and the inner peripheral surface of the distal tubular portion of the knife holder of in close contact with the liquid-tight through the ring-shaped seal member, both of the mated male electrode and female electrode the Osuhoruda, ring in a space surrounded by Jo sealing member and knife holder are configured to be automatically sealed,
A drilled tube unit for information and power transmission. 5. The information / power transmission drilling tube unit according to claim 4, wherein a liquid having electrical conductivity is circulated therein.

Images