CN114991682A - Automatic loading and unloading plug-in type clamping lock positive and negative drill rod - Google Patents
Automatic loading and unloading plug-in type clamping lock positive and negative drill rod Download PDFInfo
- Publication number
- CN114991682A CN114991682A CN202210785393.6A CN202210785393A CN114991682A CN 114991682 A CN114991682 A CN 114991682A CN 202210785393 A CN202210785393 A CN 202210785393A CN 114991682 A CN114991682 A CN 114991682A
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- Prior art keywords
- drill rod
- mandrel
- negative
- positive
- joint
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- 238000005553 drilling Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 230000009471 action Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000002173 cutting fluid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Images
Classifications
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
- E21B21/103—Down-hole by-pass valve arrangements, i.e. between the inside of the drill string and the annulus
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to the field of coal mine machinery, and relates to an automatic loading and unloading plug-in type clamping positive and negative drill rod, which comprises a drill rod main body, a mandrel arranged in the drill rod main body, and a clamping mechanism arranged in a way of being matched with the mandrel; the drill rod main part includes female joint, body and the male joint of fixed connection in proper order, and the kayser structure is including setting up in the body and dabber complex disk seat plug screw and reset spring to and set up the bayonet lock that is close to one of male joint at the dabber. Compared with the prior art, the positive and negative drill rod structure provided by the invention has the advantages of simple structure, large transmission torque and high reliability, realizes automatic assembling and disassembling of the drill rod under the condition that the automatic drilling machine does not have manual auxiliary operation, and solves the problems of slow drilling, hole collapse and drill holding, defects of the conventional positive and negative drill rod and the like.
Description
Technical Field
The invention belongs to the field of coal mine machinery, and relates to an automatic loading and unloading plug-in type clamping positive and negative drill rod.
Background
At present, drill rods used in coal mine underground coal seam drilling operation are generally in conical threaded connection and unidirectionally transmit torque load. In the drilling construction process, the problems of slow drilling, drill clamping and the like are often solved by forward and reverse rotation impact cutting, and the common drill rod is connected by threads and can only rotate in a single direction, so that forward and reverse rotation cutting cannot be realized. In recent years, some positive and negative drill rods are developed successively, but most positive and negative drill rods have problems of small transmission reverse torque, complex structure, blocking deformation and the like when in use.
Disclosure of Invention
In view of the above, the present invention provides an automatic assembling and disassembling plug-in type locking forward and backward drill rod, which realizes automatic assembling and disassembling of the drill rod without manual auxiliary operation of an automatic drilling machine.
In order to achieve the purpose, the invention provides the following technical scheme: the automatic loading and unloading plug-in type clamping positive and negative drill rod comprises a drill rod main body, a mandrel arranged in the drill rod main body and a clamping mechanism installed in a matching way with the mandrel; the drill rod main part includes female joint, body and the male joint of fixed connection in proper order, and the kayser structure is including setting up in the body and dabber complex disk seat plug screw and reset spring to and set up the bayonet lock that is close to one of male joint at the dabber.
Optionally, the male joint and the female joint are spline or hexagonal matched direct-insertion structures; the spline end parts of the male joint and the female joint are milled with guide inclined planes, so that the male joint and the female joint can be automatically guided into corresponding matching key grooves when being butted.
Optionally, the axial position of the mandrel in the male connector is controlled by the end face of the valve seat plug screw and the shoulder of the inner wall of the male connector, and the return spring is arranged between the valve seat plug screw and the bayonet lock.
Optionally, a T-shaped groove is lathed at a position where the mandrel is provided with the clamping pin, the direction of the T-shaped groove forms an angle with the axis of the drill rod, and a T-shaped block is lathed at the bottom of the clamping pin and arranged in the T-shaped groove; a square aperture is arranged on the male connector, and the size of the T-shaped block is matched with the square aperture; an annular groove is arranged in the female joint, and the size of the T-shaped block is matched with that of the annular groove.
Optionally, the mandrel is arranged in the male joint, and a one-way conduction valve is further arranged between the valve seat plug screw and the mandrel, and comprises a check ring and a valve core; one end of the large-diameter section of the valve core is hung on the shoulder of the valve seat plug screw, the end face of the large-diameter section is limited by the retainer ring, the small-diameter section is inserted into the inner cavity of the valve core to realize fixation on the valve seat plug screw, and the valve seat plug screw is fixed on the inner wall of the male connector through threads.
Optionally, a sealing ring is installed on the small-diameter section of the valve core.
Optionally, one end of the mandrel is connected with the inner wall of the female connector through a rectangular thread pair, and the other end of the mandrel is arranged in the male connector; an inner sleeve is further connected in the inner cavity of the mandrel close to one end of the female joint through threads, and the inner sleeve is connected with a driving device.
Optionally, the driving device is a driving rotary shaft.
The invention has the beneficial effects that: compared with the prior art, the positive and negative drill rod structure provided by the invention has the advantages of simple structure, large transmission torque and high reliability, realizes automatic drill rod assembly and disassembly under the condition that an automatic drilling machine does not have manual auxiliary operation, and solves the problems of slow drilling, hole collapse and drill embracing, defects of the conventional positive and negative drill rod and the like.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a view C-C of FIG. 1;
FIG. 3 is an enlarged view of A in FIG. 1;
FIG. 4 is a schematic view of the installation of drill pipe Z1 and drill pipe Z2 according to embodiment 1 of the present invention;
FIG. 5 is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 6 is an isometric view of the present invention;
FIG. 7 is a schematic view of the bayonet of the present invention.
Reference numerals: female joint 1, body 2, retaining ring 3, disk seat plug screw 4, case 5, dabber 6, reset spring 7, male joint 8, bayonet lock 9, endotheca 10.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustration only and not for the purpose of limiting the invention, shown in the drawings are schematic representations and not in the form of actual drawings; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and the specific meaning of the terms described above will be understood by those skilled in the art according to the specific circumstances.
In the specific embodiment of the method of the invention 1,
referring to fig. 1 to 4, the self-loading and unloading plug-in type locking positive and negative drill rod includes a drill rod main body, a mandrel 6 disposed in the drill rod main body, and a locking mechanism installed in cooperation with the mandrel 6; the drill rod main body comprises a female joint 1, a pipe body 2 and a male joint 8 which are fixedly connected in sequence, the clamping and locking structure comprises a valve seat plug screw 4 and a return spring 7 which are arranged in the pipe body 2 and matched with a mandrel 6, and a clamping pin 9 arranged at one end of the mandrel 6 close to the male joint 8, and the male joint 8 and the female joint 1 comprise but are not limited to a spline or a hexagonal matched direct-inserting structure; the spline end parts of the male joint 8 and the female joint 1 are milled with guide inclined planes so that corresponding matching key grooves can be automatically guided in when the male joint 1 and the female joint are in butt joint, the axial position of the mandrel 6 in the male joint 8 is controlled by the end surface of the valve seat plug screw 4 and the shoulder of the inner wall of the male joint 8, and the return spring 7 is arranged between the valve seat plug screw 4 and the bayonet 9 (the return spring 7 is sleeved on the mandrel 6, one end of the return spring is attached to the large end of the mandrel 6, and the other end of the return spring is arranged on the shoulder of the male joint 8); a square aperture is arranged on the male connector 8, and the size of the T-shaped block is matched with the square aperture; an annular groove is formed in the female connector 1, the T-shaped block is matched with the annular groove in size, the mandrel 6 is arranged in the male connector 8, a one-way conduction valve is further arranged between the valve seat plug screw 4 and the mandrel 6, and the one-way conduction valve comprises a check ring 3 and a valve core 5.
In this embodiment, one end of the large diameter section of the valve core 5 is hung on the shoulder of the valve seat plug screw 4, the end face of the large diameter section is limited by the retainer ring 3, the small diameter section is inserted into the inner cavity of the valve core 5 to be fixed on the valve seat plug screw 4, the valve seat plug screw 4 is fixed on the inner wall of the male joint 8 through threads, the small diameter section of the valve core 5 is provided with a sealing ring, and at the moment, the water channel is in a cut-off state, namely, the one-way conduction valve is in a closed state; when high-pressure water is introduced, the mandrel 6 compresses the return spring 7 to move rightwards under the action of the water pressure, the inner cavity of the mandrel 6 is separated from the valve core 5, the one-way conduction valve is in a communicated state, and the water channel in the drill rod is communicated.
In the embodiment, a T-shaped groove is lathed at the position where the bayonet lock 9 is installed on the mandrel 6, the direction of the T-shaped groove forms an angle with the axis of a drill rod, a T-shaped block is lathed at the bottom of the bayonet lock 9 and is arranged in the T-shaped groove, in an initial state, the mandrel 6 is tightly attached to the end face of the valve seat plug screw 4 under the action of the return spring 7, and the mandrel locking mechanism is in an unlocking state; when the mandrel 6 compresses the return spring 7 to move rightwards under the action of water pressure until the inner wall shoulder of the male joint 8, at the moment, the clamping pin 9 radially extends out along the square hole of the male joint 8 under the guidance of the T-shaped groove and is clamped into the annular groove of the female joint 1, the drill rod units are in a clamping locking state, the drill rods are locked, and at the moment, the water channel is in a communication state.
The specific driller construction process of the invention is as follows:
under the construction state of a drill rod, drill rod units are connected in series (namely, a drill rod string), the female end of the drill rod string is connected into a water swivel, the male end is connected into a drill bit, high-pressure cutting fluid is applied to an inner channel of the drill rod by the water swivel, and the drill rod applies feeding rotary cutting force to the drill bit;
when a drill rod unit is added in the drilling process, the water braid is removed, after a drill rod unit is connected, the water braid is connected, cutting fluid with the pressure exceeding 1MPa is introduced, the locking mechanisms in the drill rod units in the drill rod string are sequentially started to respectively lock the adjacent drill rod units, and the locking state between the adjacent drill rod units is as shown in figure 4, so that the drill rod string forms a whole body capable of rotating forwards and backwards; meanwhile, the one-way conduction valves in the drill rod units in the drill rod string are sequentially opened from the outside of the hole to the inside of the hole until the bottom of the hole, and the cutting fluid flows to the bottom of the hole from the water swivel and flows out of the hole opening from an annular cavity between the outer wall of the drill rod and the hole wall after carrying coal cinder. If the one-way conduction valve of one of the drill rod units is not opened (namely the drill rod unit does not clamp the adjacent drill rod unit, the forward and reverse drilling construction cannot be carried out), the cutting fluid is cut off, the orifice cannot return water and return slag, and the reliability of the clamping and locking between the drill rod units is also ensured;
when the drill is retreated, the drill pull rod is retreated under the condition of high-pressure water return and slag return, the water swivel is removed, the drill rod unit is pulled out, the water swivel is connected and high-pressure water is introduced, the drill rod is pulled back until the water return and slag return are completed, and the drill retreating is repeated.
In the embodiment, when high-pressure water is not introduced any more, the reset spring 7 does not have the action of the high-pressure water when the drill rod is withdrawn, the mandrel 6 moves leftwards under the rebound action of the reset spring 7, the inner cavity of the mandrel 6 is matched and blocked with the valve core 5, at the moment, the one-way conduction valve is in a closed state, and a water channel in the drill rod is not communicated; meanwhile, when the mandrel 6 moves leftwards, the bayonet lock 9 retracts radially along the square hole of the male joint 8 under the guidance of the T-shaped groove, the bayonet lock exits from the annular groove of the female joint 1, the drill rod units are in an unlocking state, and adjacent drill rod units can be pulled out.
In the specific embodiment 2, the method comprises the following steps of,
referring to fig. 6, unlike embodiment 1, this embodiment adopts a long core shaft 6 structure, one end of the core shaft 6 is connected with the inner wall of the female connector 1 through a rectangular thread pair, and the other end is disposed in the male connector 8; an inner sleeve 10 is further connected in the inner cavity of the mandrel 6 close to one end of the female joint 1 through threads, and the inner sleeve 10 is connected with a driving device which is a driving rotating shaft.
In the implementation, a one-way conduction valve structure is not provided, and during operation, the inner sleeve 10 is driven to rotate by driving the rotating shaft, and the mandrel 6 moves forwards or backwards under the matching of the rectangular thread pair, so that the bayonet lock 9 is controlled to extend or retract in the square hole of the male connector 8, and the locking and unlocking states are realized.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. Automatic loading and unloading plug-in type kayser positive and negative drilling rod, its characterized in that: the drill rod clamping device comprises a drill rod main body, a mandrel arranged in the drill rod main body and a clamping mechanism matched with the mandrel;
the drill rod main part includes female joint, body and the male joint of fixed connection in proper order, and the kayser structure is including setting up in the body and dabber complex disk seat plug screw and reset spring to and set up the bayonet lock that is close to one of male joint at the dabber.
2. The auto-loading and unloading plug-in type lock positive and negative drill rod of claim 1, wherein: the male joint and the female joint are in a spline or hexagonal matched direct-insertion type structure; the spline end parts of the male joint and the female joint are milled with guide inclined planes, so that the male joint and the female joint can be automatically guided into corresponding matching key grooves when being butted.
3. The auto-loading and unloading plug-in type lock positive and negative drill rod of claim 1, wherein: the axial position of the mandrel in the male joint is controlled by the end surface of the valve seat plug screw and the shoulder of the inner wall of the male joint, and the reset spring is arranged between the valve seat plug screw and the bayonet lock.
4. The auto-loading and unloading plug-in type lock positive and negative drill rod of claim 1, wherein: a T-shaped groove is lathed at the position of the mandrel where the bayonet lock is installed, the direction of the T-shaped groove forms an angle with the axis of the drill rod, and a T-shaped block is lathed at the bottom of the bayonet lock and is arranged in the T-shaped groove;
a square aperture is arranged on the male connector, and the size of the T-shaped block is matched with the square aperture; an annular groove is arranged in the female joint, and the size of the T-shaped block is matched with that of the annular groove.
5. The auto-loading and unloading plug-in type lock positive and negative drill rod of claim 1, wherein: the mandrel is arranged in the male joint, a one-way conduction valve is also arranged between the valve seat plug screw and the mandrel, and the one-way conduction valve comprises a check ring and a valve core;
one end of the large-diameter section of the valve core is hung on the shoulder of the valve seat plug screw, the end face of the large-diameter section is limited by the retainer ring, the small-diameter section is inserted into the inner cavity of the valve core to realize fixation on the valve seat plug screw, and the valve seat plug screw is fixed on the inner wall of the male connector through threads.
6. The auto-loading and unloading plug-in type lock positive and negative drill rod of claim 5, wherein: the small diameter section on the valve core is provided with a sealing ring.
7. The auto-loading and unloading plug-in type lock positive and negative drill rod of claim 1, wherein: one end of the mandrel is connected with the inner wall of the female connector through a rectangular thread pair, and the other end of the mandrel is arranged in the male connector;
an inner sleeve is further connected in the inner cavity of the mandrel close to one end of the female joint through threads, and the inner sleeve is connected with a driving device.
8. The auto-loading and unloading plug-in type lock positive and negative drill rod of claim 7, wherein: the driving device is used for driving the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210785393.6A CN114991682A (en) | 2022-07-04 | 2022-07-04 | Automatic loading and unloading plug-in type clamping lock positive and negative drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210785393.6A CN114991682A (en) | 2022-07-04 | 2022-07-04 | Automatic loading and unloading plug-in type clamping lock positive and negative drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114991682A true CN114991682A (en) | 2022-09-02 |
Family
ID=83020215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210785393.6A Pending CN114991682A (en) | 2022-07-04 | 2022-07-04 | Automatic loading and unloading plug-in type clamping lock positive and negative drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114991682A (en) |
-
2022
- 2022-07-04 CN CN202210785393.6A patent/CN114991682A/en active Pending
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