CN112324376A - Horizontal coring drilling machine and direction adjusting device thereof - Google Patents
Horizontal coring drilling machine and direction adjusting device thereof Download PDFInfo
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- CN112324376A CN112324376A CN202011268847.XA CN202011268847A CN112324376A CN 112324376 A CN112324376 A CN 112324376A CN 202011268847 A CN202011268847 A CN 202011268847A CN 112324376 A CN112324376 A CN 112324376A
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- 238000005553 drilling Methods 0.000 title claims abstract description 54
- 230000033001 locomotion Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 235000019994 cava Nutrition 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/16—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a horizontal core-taking drilling machine and a direction adjusting device thereof, which are used for adjusting the direction of a second drill rod which is connected with a first drill rod in the horizontal core-taking drilling machine relatively, and comprise a direction adjusting ring, a spherical support, a plurality of telescopic driving parts and a plurality of wedge-shaped direction adjusting blocks, wherein the direction adjusting ring is fixed on the inner wall of a shell of the horizontal core-taking drilling machine, the plurality of telescopic driving parts are distributed along the circumferential direction of the first drill rod, one end of each telescopic driving part is fixed outside the first drill rod, the other end of each telescopic driving part is respectively connected with the wedge-shaped direction adjusting block to drive the wedge-shaped direction adjusting block to reciprocate along the axial direction of the first drill rod, the direction adjusting ring is provided with an inclined surface to be matched with the inclined surface of each wedge-shaped direction adjusting block, the inner wall of each wedge-shaped direction adjusting block is supported outside. The horizontal coring drilling machine and the direction adjusting device are applied, so that the direction can be effectively adjusted, the structure is simple, and the cost is lower.
Description
Technical Field
The invention relates to the technical field of tunnel engineering machinery, in particular to a horizontal coring drilling machine and a direction adjusting device thereof.
Background
With the continuous acceleration of the infrastructure of China, the construction is more and more carried out in various complex geological environments such as plateaus, mountainous areas, hills, beaches, rivers, lakes, seas and mudflats, various complex geological conditions such as underground quicksand, karst caves, rock stratums and the like are frequently encountered during field construction, and geological sampling needs to be carried out on the constructed related stratums in order to solve the geological conditions of the stratums. Sampling the relevant stratum requires a special drilling machine to operate, and higher requirements are also put forward for the precision requirement of construction.
The horizontal coring drill can meet the operation requirements. In the operation process of the horizontal core drilling machine, the relative angle between the connected first drill rod and the second drill rod needs to be adjusted according to the path, namely, the direction is adjusted. The current direction adjusting structure is realized by a complex structure connected between a first drill rod and a second drill rod, and the cost is high.
In summary, how to effectively solve the problems of high cost and the like of the direction adjusting structure of the horizontal coring drilling machine is a problem to be solved by the technical personnel in the field at present.
Disclosure of Invention
In view of the above, a first object of the present invention is to provide a direction-adjusting device for a horizontal coring drilling machine, the direction-adjusting device being designed to effectively solve the problem of high cost of the direction-adjusting structure of the horizontal coring drilling machine, and a second object of the present invention is to provide a horizontal coring drilling machine including the direction-adjusting device.
In order to achieve the first object, the invention provides the following technical scheme:
the utility model provides a transfer to device of horizontal core drill rig for adjust turning to of the relative second drilling rod that is connected of first drilling rod in the horizontal core drill rig, transfer to the piece including transferring to ring, spherical support, a plurality of flexible driving piece and a plurality of wedge, transfer to the ring be fixed in the shell inner wall of horizontal core drill rig, it is a plurality of flexible driving piece is followed the circumference of first drilling rod distributes, and one end is fixed in outside the first drilling rod, the other end respectively with the wedge transfer to the piece be connected in order to drive the wedge transfer to the piece along the axial reciprocating motion of first drilling rod, it has the inclined plane in order with each to transfer to the cooperation of piece inclined plane to the wedge, and each the inner wall that the wedge transferred to the piece support in outside the first drilling rod, in order to apply radial force to first drilling rod, spherical support connect in outside the first drilling rod and the outward surface is the spherical crown.
Preferably, the direction adjusting device comprises 3 to 6 telescopic driving members, and each telescopic driving member is equally distributed along the circumferential direction of the first drill rod.
Preferably, in the direction adjusting device, a mounting frame is connected outside the first drill rod, and an inner wall of each wedge-shaped direction adjusting block abuts against the mounting frame to act on the first drill rod.
Preferably, in the direction adjusting device, each telescopic driving member is fixedly connected with the first drill rod through the mounting frame.
Preferably, in the above direction-adjusting device, the mounting frame is connected to the first drill rod through a sliding bearing.
Preferably, in the above direction-adjusting device, the spherical support is connected to the outside of the first drill rod through a sliding bearing.
Preferably, in the direction adjusting device, a gap is formed between the wedge-shaped direction adjusting block and the inclined surface of the direction adjusting ring in an initial state of the telescopic driving member.
Preferably, in the direction adjusting device, a guide system is disposed in the first drill rod, the guide system is electrically connected to the control system, and can move back and forth along the first drill rod in the first drill rod, acquire a deviation distance between an axis of the first drill rod and an axis of the tunnel according to a movement track, and send the deviation distance to the control system, and the control system is electrically connected to each of the telescopic driving members and is configured to control a telescopic amount of each of the telescopic driving members according to the deviation distance.
The direction adjusting device of the horizontal core drill rig is used for adjusting the direction of a first drill rod in the horizontal core drill rig relative to a second drill rod connected with the first drill rod, and comprises a direction adjusting ring, a spherical support, a plurality of telescopic driving pieces and a plurality of wedge-shaped direction adjusting blocks. Wherein, transfer to the ring and be fixed in the shell inner wall of horizontal core drill rig, a plurality of flexible driving pieces distribute along the circumference of first drilling rod, and one end is fixed in outside the first drilling rod, the other end is transferred to the piece with the wedge respectively and is connected, transfer to the ring have the inclined plane in order to transfer to the cooperation of piece inclined plane with each wedge, and each wedge is transferred to the inner wall of piece and is supported outside first drilling rod to exert radial force to first drilling rod, spherical support is connected and is personally submitted the spherical crown outside first drilling rod.
By applying the direction adjusting device of the horizontal core drilling machine, according to the steering and angle requirements of the drill rod, each telescopic driving piece correspondingly acts, the telescopic driving pieces drive the wedge-shaped direction adjusting block to correspondingly and telescopically move along the axial direction of the first drill rod, the inclined surface of the wedge-shaped direction adjusting block is matched with the inclined surface of the direction adjusting ring, the axial thrust of the telescopic driving pieces is converted into radial thrust through the inclined surface action, and the inner wall of the wedge-shaped direction adjusting block is supported outside the first drill rod, so that the radial thrust in the direction acts on the first drill rod which can float in a small range. The first drill rod is used as a rod piece in the rod lever principle, the spherical support arranged at the front end of the first drill rod is matched to be used as a fulcrum, and the control of the direction of the drill rod of the horizontal coring drilling machine is realized through the extension and retraction of all the telescopic driving pieces, so that the drill rod can tunnel according to a preset route. To sum up, when adopting this to transfer to the device can realize effectively transferring to, simple structure, the cost is lower.
In order to achieve the second object, the invention also provides a horizontal coring drilling machine, which comprises any one of the direction adjusting devices. Because the direction adjusting device has the technical effects, the horizontal coring drilling machine with the direction adjusting device also has the corresponding technical effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a steering device of a horizontal coring drill according to one embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view of FIG. 1;
fig. 3 is a schematic cross-sectional structure of fig. 1.
The drawings are numbered as follows:
1. the device comprises a shell, 2, a first drill rod, 3, a direction adjusting ring, 4, a wedge-shaped direction adjusting block, 5, a telescopic driving piece, 6, a mounting frame, 7, a spherical support, 8, a guide system, 9, a sliding bearing, 10, a screw, 11 and a second drill rod.
Detailed Description
The embodiment of the invention discloses a horizontal coring drilling machine and a direction adjusting device thereof, which are used for providing high direction adjusting precision, and have the advantages of simple structure and lower cost.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, fig. 1 is a schematic structural view of a direction adjusting device of a horizontal coring drilling machine according to an embodiment of the present invention; FIG. 2 is an enlarged partial schematic view of FIG. 1; fig. 3 is a schematic cross-sectional structure of fig. 1.
In one embodiment, the present invention provides a steering device for a horizontal core drill rig for adjusting the steering of a first drill pipe 2 relative to an associated second drill pipe 11 within the horizontal core drill rig, i.e., by adjusting the steering direction and angle of the first drill pipe 2 relative to the second drill pipe 11, to dig in a predetermined path. Where the direction of rotation of the first drill rod 2 relative to the connected second drill rod 11 is in axial direction.
The direction adjusting device comprises a direction adjusting ring 3, a spherical support 7, a plurality of telescopic driving pieces 5 and a plurality of wedge-shaped direction adjusting blocks 4.
Wherein, the direction adjusting ring 3 is fixed on the inner wall of the shell 1 of the horizontal core drilling machine, and the direction adjusting ring 3 is in a ring structure, generally a circular ring. The fixing mode of the direction adjusting ring 3 and the shell 1 can adopt welding, namely the direction adjusting ring 3 and the shell 1 are welded.
A plurality of flexible driving pieces 5 are distributed along the circumference of the first drilling rod 2, one end of each flexible driving piece is fixed outside the first drilling rod 2, and the other end of each flexible driving piece is connected with the wedge-shaped direction adjusting block 4. The telescopic driving member 5 is a driving member capable of extending and retracting, and may be specifically an electric push rod, and may also adopt hydraulic pressure or start a telescopic cylinder and the like as required. The telescopic drivers 5 are circumferentially distributed, preferably uniformly distributed, in order to determine the amount of extension and retraction of the telescopic drivers 5. It is noted that, here and hereinafter, a plurality referred to means three and more than three. The connection between the telescopic driving piece 5 and the wedge-shaped direction adjusting block 4 can be realized in a U-shaped fork hinge mode, and the connection strength can be effectively guaranteed by selecting the connection mode.
The spherical support 7 is connected outside the first drill rod 2 and has an outer surface in a spherical crown, and the spherical crown is used for abutting against the outer shell 1 to provide a supporting function. The spherical cap refers to a curved surface left after the spherical surface is cut by a plane, that is, the outer surface of the spherical support 7 is a partial spherical surface. The spherical support 7 provides a fulcrum for direction adjustment, and the spherical support 7 is arranged because the first drill rod 2 turns relative to the second drill rod 11, so that the spherical crown can still provide effective support under the condition that the first drill rod 2 rotates in different directions and at different angles.
The direction-adjusting ring 3 has a bevel to cooperate with the bevel of each wedge-shaped direction-adjusting block 4, and the inner wall of each wedge-shaped direction-adjusting block 4 is supported outside the first drill rod 2 to apply a radial force to the first drill rod 2. That is to set up the inclined plane on the accent ring 3, each wedge is transferred to the inclined plane of piece 4 and is transferred to the inclined plane cooperation of ring 3, and then the flexible driving piece 5 drive wedge is transferred to piece 4 and is removed, because the cooperation on inclined plane can produce radial drive power, again because the wedge is transferred to the inner wall of piece 4 and is supported outside first drilling rod 2, so radial effort acts on first drilling rod 2, through the flexible volume control of flexible driving piece 5 on the not equidirectional, realize the control of first drilling rod 2 direction of rotation and angle. It should be noted that the amount of extension and retraction of the telescopic driving member 5 may be an amount of extension, an amount of retraction, or zero, i.e., remain stationary.
Specifically, flexible driving piece 5 is flexible along the axial, transfers to 4 axial displacement of piece through flexible driving piece 5 drive wedge, acts on and transfers to ring 3, and the wedge is transferred to 4 radial displacement that produce of piece, and the wedge is transferred to piece 4 and is transmitted first drilling rod 2 to reach the accent of horizontal coring drilling machine to the purpose. Specifically, during normal drilling, the telescopic driving member 5 is in a middle stroke state like a push rod of an electric push rod, and during direction adjustment, a part of the telescopic driving member 5, like the push rod of the electric push rod, retracts to ensure that no position interference occurs during direction adjustment, thereby ensuring smooth execution of direction adjustment.
By applying the direction adjusting device of the horizontal core drilling machine, according to the steering and angle requirements of the drill rods, the telescopic driving pieces 5 correspondingly act, the telescopic driving pieces 5 drive the wedge-shaped direction adjusting block 4 to correspondingly extend and retract, the inclined surface of the wedge-shaped direction adjusting block 4 is matched with the inclined surface of the direction adjusting ring 3, radial acting force is generated through the inclined surface action, and the inner wall of the wedge-shaped direction adjusting block 4 is supported outside the first drill rod 2, so that the radial acting force is applied to the first drill rod 2, the first drill rod 2 deflects relative to the second drill rod 11 under the action of the radial force, the steering direction and the angle of the first drill rod 2 relative to the second drill rod 11 are adjusted, and the drill rods can tunnel according to a preset route. The direction adjusting structure can provide a guide path with high precision and good stability. To sum up, when adopting this to transfer to the device can realize effectively transferring to, simple structure, the cost is lower.
Specifically, the drilling rod comprises 3-6 telescopic driving pieces 5, and the telescopic driving pieces 5 are evenly distributed along the circumferential direction of the first drilling rod 2. The greater the number of telescopic drives 5, the greater the number of corresponding wedge shoes 4, the greater the accuracy that can be achieved in the steering adjustment, but the greater the corresponding space occupation in the housing 1. Therefore, the number of the telescopic driving pieces 5 is controlled to be 3-6, preferably four, and the telescopic driving pieces 5 are uniformly distributed along the circumferential direction of the first drill rod 2, so that the wedge-shaped direction adjusting blocks 4 are correspondingly uniformly distributed along the circumferential direction, and the direction adjusting precision and the space occupation can be both considered.
For the convenience of installation, a mounting frame 6 is connected outside the first drill rod 2, and the inner wall of each wedge-shaped direction adjusting block 4 is abutted against the mounting frame 6 to act on the first drill rod 2. The inner wall of the wedge-shaped direction adjusting block 4 is preferably a plane and is used for abutting against an installation platform of the installation frame 6, and after the bottom surface of the wedge-shaped direction adjusting block 4 is contacted with the installation platform, the radial thrust action in the direction corresponding to the wedge-shaped direction adjusting block 4 is transmitted to the first drill rod 2 through the installation platform. The specific structure of the mounting frame 6 can be set according to the needs, and is not limited in detail here.
Furthermore, each telescopic drive 5 is fixedly connected to the first drill rod 2 via a mounting frame 6. The telescopic driving member 5 is conveniently connected with the first drill rod 2 through the arrangement of the mounting frame 6. The telescopic drive 5 may in particular be welded to the mounting frame 6. The mounting frame 6 can be mounted outside the first drill rod 2, in particular, by means of a slide bearing 9, so that the telescopic drive 5 is firmly and effectively coupled to the first drill rod 2. Meanwhile, the structural form that the first drill rod 2 is nested in the sliding bearing 9 is utilized, the structure is simple, the occupied space is small, and the available space in the shell 1 is increased. If desired, the telescopic drive 5 can also be connected to the first drill rod 2 via a bearing without a mounting socket.
In particular, the spherical support 7 is connected to the outside of the first drilling rod 2 by means of a sliding bearing. By means of the slide bearing, the rotation of the first drill rod 2 relative to the spherical support 7 can be satisfied if necessary. In order to prevent the function of the sliding bearing from being damaged by the muck, two sides of the spherical support 7 are respectively provided with a sealing component. The specific form of the sealing assembly may employ a conventional sealing structure, and is not particularly limited herein. Through the setting of two sets of seal assembly, avoided the dregs to get into the destruction that the slide bearing caused.
In the above embodiment, the wedge-shaped direction adjusting block 4 and the inclined plane of the direction adjusting ring 3 have a clearance in the initial state of the telescopic driving member 5. That is, under the initial position of the telescopic driving member 5, a certain gap is left between the direction adjusting ring 3 and the front end face of the wedge-shaped direction adjusting block 4, so that when the telescopic driving member 5 does not extend outwards, the wedge-shaped direction adjusting block 4 does not generate radial displacement. Taking the welding of the direction adjusting ring 3 and the shell 1 as an example, the welding position of the direction adjusting ring meets the requirement that a certain gap is left between the welding position and the front end face of the wedge-shaped direction adjusting block 4 at the initial position, thereby ensuring that the direction adjusting ring 3 and the wedge-shaped inclined plane of the wedge-shaped direction adjusting block 4 start to contact after the telescopic driving piece 5 extends outwards, and meanwhile, the wedge-shaped direction adjusting block 4 is supported outside the first drill rod 2, if the flat bottom surface of the wedge-shaped direction adjusting block 4 moves to the upper side of the installation plane of the installation frame 6, when the telescopic driving piece 5 continues to extend outwards and advance, along with the inclined plane of the direction adjusting ring 3, the wedge-shaped direction adjusting block 4 generates a radial displacement.
On the basis of the above embodiments, a guiding system 8 is arranged in the first drill rod 2, the guiding system 8 is electrically connected with the control system, and can move back and forth in the first drill rod 2 according to the movement track to acquire the deviation distance between the axis of the first drill rod 2 and the axis of the tunnel, and send the deviation distance to the control system, and the control system is electrically connected with the telescopic driving members 5 and used for controlling the telescopic amount of the telescopic driving members 5 according to the deviation distance. I.e. the first drill rod 2 is a hollow drill rod, leaving room for coring and installation of the guide system 8. The 8 concrete and core device that link to each other of guidance system, at the complete core in-process of each stage, guidance system 8 is through the motion of making a round trip in first drilling rod 2, collect the movement track of first drilling rod 2, thereby calculate the axle center deviation distance of 2 axles of first drilling rod and whole tunnel, the gesture of horizontal core drill rig can specifically be got through calculating, and give control system with the data real-time transmission of collecting, handle the flexible volume that reachs each flexible driving piece 5 by control system again, accomplish once accurate accent to the operation after flexible driving piece 5 answers, the timely renewal and the response of data have been guaranteed, the route of moving ahead that makes horizontal core drill rig is adjustable in real time, move ahead with accurate orbit. For the detailed structure and operation of the guiding system 8, please refer to the prior art, which is not described herein.
Based on the direction adjusting device provided in the above embodiment, the invention also provides a horizontal coring drilling machine, which comprises any one of the direction adjusting devices in the above embodiments. Because the direction adjusting device in the above embodiment is adopted in the horizontal coring drilling machine, please refer to the above embodiment for the beneficial effects of the horizontal coring drilling machine.
Specifically, the first drill rod 2 and the second drill rod 11 are sleeved, the first drill rod 2 and the second drill rod 11 are connected through the screw 10, and the radial parts of the first drill rod 2 and the second drill rod 11 have swing gaps, so that the swing amount required by the direction adjustment of the horizontal core drilling machine can be provided. The connection of the first drill rod 2 and the second drill rod 11 with the front drill rod and the rear drill rod can be realized by adopting a tapered rectangular threaded sleeve, so that the effect of tight connection can be achieved, and the integral rigidity can be also met.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A direction adjusting device of a horizontal core drill is used for adjusting the direction of a first drill rod in the horizontal core drill relative to a second drill rod connected with the first drill rod, it is characterized by comprising a direction adjusting ring, a spherical support, a plurality of telescopic driving pieces and a plurality of wedge-shaped direction adjusting blocks, the direction adjusting ring is fixed on the inner wall of the shell of the horizontal core drilling machine, a plurality of telescopic driving pieces are distributed along the circumferential direction of the first drill rod, one end of the wedge-shaped direction adjusting block is fixed outside the first drill rod, the other end of the wedge-shaped direction adjusting block is respectively connected with the wedge-shaped direction adjusting block so as to drive the wedge-shaped direction adjusting block to reciprocate along the axial direction of the first drill rod, the direction adjusting ring is provided with an inclined surface to be matched with the inclined surface of each wedge-shaped direction adjusting block, the inner wall of each wedge-shaped direction adjusting block is supported outside the first drill rod, the spherical support is connected to the outer side of the first drill rod, and the outer surface of the spherical support is a spherical crown.
2. The direction-adjusting device of claim 1, comprising 3-6 telescopic driving members, and the telescopic driving members are equally distributed along the circumference of the first drill rod.
3. The direction-adjusting device of claim 1, wherein a mounting frame is connected outside the first drill rod, and an inner wall of each wedge-shaped direction-adjusting block abuts against the mounting frame to act on the first drill rod.
4. The direction-adjusting device of claim 3, wherein each of the telescopic driving members is fixedly connected to the first drill rod via the mounting bracket.
5. The direction-adjusting device of claim 4, wherein the mounting bracket is connected with the first drill rod by a sliding bearing.
6. The direction-adjusting device of claim 1, wherein the spherical support is coupled to the outside of the first drill rod by a sliding bearing.
7. The direction-adjusting device of claim 1, wherein a gap is formed between the wedge-shaped direction-adjusting block and the inclined surface of the direction-adjusting ring in the initial state of the telescopic driving member.
8. The direction adjusting device according to any one of claims 1 to 7, wherein a guide system is arranged in the first drill rod, the guide system is electrically connected with a control system, the guide system can move back and forth along the first drill rod in the first drill rod, obtains a deviation distance between the axis of the first drill rod and the axis of the tunnel according to a movement track, and sends the deviation distance to the control system, and the control system is electrically connected with each telescopic driving piece and is used for controlling the telescopic amount of each telescopic driving piece according to the deviation distance.
9. A horizontal core drilling machine, comprising a steering device as claimed in any one of claims 1 to 9.
10. The horizontal coring drill of claim 9, wherein the first drill rod and the second drill rod are nested with a screw connection therebetween and the first drill rod and the second drill rod radial member have a swing clearance.
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| CN202011268847.XA CN112324376A (en) | 2020-11-13 | 2020-11-13 | Horizontal coring drilling machine and direction adjusting device thereof |
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| CN202011268847.XA CN112324376A (en) | 2020-11-13 | 2020-11-13 | Horizontal coring drilling machine and direction adjusting device thereof |
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| CN111364976A (en) * | 2020-04-02 | 2020-07-03 | 中国铁建重工集团股份有限公司 | Horizontal core drill inclined plane drill bit position recognition device and system |
| CN213654800U (en) * | 2020-11-13 | 2021-07-09 | 中国铁建重工集团股份有限公司 | Horizontal coring drilling machine and direction adjusting device thereof |
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