CN112253017B - Floatable drill rod connecting device - Google Patents
Floatable drill rod connecting device Download PDFInfo
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- CN112253017B CN112253017B CN202011156490.6A CN202011156490A CN112253017B CN 112253017 B CN112253017 B CN 112253017B CN 202011156490 A CN202011156490 A CN 202011156490A CN 112253017 B CN112253017 B CN 112253017B
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- main shaft
- joint body
- power head
- drill rod
- head main
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/16—Connecting or disconnecting pipe couplings or joints
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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 mechanical design, and relates to a floatable drill rod connecting device which is arranged on a power head main shaft and comprises a connector body matched and connected with the power head main shaft and a limiting device arranged outside the connector body and the power head main shaft, wherein an elastic part with floating positioning is also arranged between the connector body and the power head main shaft. The joint has an axial floating function, changes the rigid extrusion and friction between the joint body and the front drill rod thread into a process of elastic gradual change, effectively protects the thread of the joint body, and prolongs the service life of the joint body. Through setting up the adapter sleeve, the dynamic link that will produce the impact for a long time has shifted to between the joint body and the adapter sleeve, and for the pin junction that does not have the impact between main shaft and the adapter sleeve, has reduced the direct probability of damaging of main shaft by a wide margin, helps reducing cost of maintenance, shortens maintenance duration.
Description
Technical Field
The invention belongs to the field of mechanical design and relates to a floatable drill rod connecting device.
Background
The automatic drilling machine is a novel coal mine drilling device developed in recent years, and various automatic drilling machines adopt a working mode of feeding a drill rod from the middle of a power head and a clamping device. In order to improve the reliability of the related structure, the connection between the power head and the drill rod generally adopts a driving joint mode rather than a rubber sleeve chuck mode of a traditional drilling machine, namely: the power head is provided with a joint (both a male head and a female head) which is correspondingly matched with the drill rod and is connected with the drill rod. In the process of connecting and buckling the drill rod, the driving joint needs to advance along with the rotation under the driving of the power head, and the rotation speed and the advancing speed cannot be matched exactly according to the relation between the screw pitch and the rotation angle, so that the abrasion of the joint is difficult to avoid. Because the frequency of use of the active joint is tens of times or even hundreds of times higher than that of joints of other drill rods, and the prior art does not have the function of adjustment or floating, the joint is quickly worn and needs to be frequently replaced, the overall efficiency of the construction of the automatic drilling machine is influenced, and the use and maintenance cost of a user is also improved.
Disclosure of Invention
In view of the above, the present invention provides a floatable drill rod connecting device, which solves the problem that the driving joint has no floating function in the axial direction.
In order to achieve the purpose, the invention provides the following technical scheme: a floatable drill rod connecting device is installed on a power head main shaft and comprises a connector body matched and connected with the power head main shaft and a limiting device arranged outside the connector body and the power head main shaft, and an elastic piece with floating positioning is arranged between the connector body and the power head main shaft.
Optionally, the limiting device includes an end cover and a connecting disc for connecting and fixing the joint body and the power head main shaft, and a transmission sleeve disposed between the end cover and the joint body in a matching manner, the connecting disc is fixed on the power head main shaft, and the end cover is fixedly connected with the connecting disc through a fastener.
Optionally, the joint body includes a drill rod joint and a connector which are fixedly connected, and an external spline which is used in cooperation with the transmission sleeve is arranged at one end of the connector close to the main shaft of the power head;
and the rear end surface of the external spline is also provided with a plurality of spring holes for mounting the elastic piece.
Optionally, a water through hole communicated with the main shaft and the drill rod is formed in the center of the joint body, and a joint body sealing groove used for mounting a second sealing ring is further formed in one end, close to the main shaft of the power head, of the joint body.
Optionally, the connecting disc is in threaded connection with the power head main shaft, and a plurality of bolt through holes distributed along the circumference are formed in the end face of the connecting disc.
Optionally, one end of the end cover is provided with a joint body through hole, and the inner wall of the joint body through hole is provided with a dustproof ring installation groove for installing a third sealing ring; the other end is provided with a flange plate, and the flange plate is provided with a through hole matched with the bolt through hole on the connecting disc.
Optionally, an inner spline matched with the external spline of the joint body is arranged on an inner hole at one end of the transmission sleeve, and a circular pressure plate is arranged at the other end of the transmission sleeve;
the end face of the circular pressure plate facing to the power head spindle is provided with a socket ring for spindle insertion, and the end face of the socket ring is also provided with a plurality of pin holes which are distributed along the circumference and used for installing pins.
Optionally, the length of the internal spline is greater than the external spline of the coupling body.
Optionally, the inner wall of the socket ring is further provided with a transmission sleeve sealing groove for mounting the first sealing ring.
Optionally, the resilient member is a spring.
The invention has the beneficial effects that:
(1) The floatable drill rod connecting device has an axial floating function, changes rigid extrusion and friction between the joint body and the drill rod thread at the front end into a process of elastic gradual change, effectively protects the thread of the joint body and prolongs the service life of the joint body.
(2) According to the floatable drill rod connecting device, the connecting sleeve is arranged, so that the movable connection which generates impact for a long time is transferred between the connector body and the connecting sleeve, and the main shaft is connected with the connecting sleeve through the pin without impact, so that the probability of direct damage of the main shaft is greatly reduced, the maintenance cost is reduced, and the maintenance time is shortened.
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 a better understanding of the objects, aspects and advantages of the present 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 view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the coupling body of the present invention;
FIG. 3 is a schematic structural view of the end cap of the present invention;
FIG. 4 is a schematic view of the structure of the driving sleeve of the present invention;
FIG. 5 is a schematic diagram of the structure of the connecting pad of the present invention.
Reference numerals are as follows: the joint comprises a joint body 1, a drill rod joint 11, a connecting body 12, an external spline 13, a joint body sealing groove 14, a water through hole 15, a spring hole 16, an end cover 2, a joint body through hole 21, a dust ring mounting groove 22, a flange plate 23, a bolt through hole 24, a transmission sleeve 3, an internal spline 31, a circular pressure plate 32, a bearing ring 33, a transmission sleeve sealing groove 34, a pin hole 35, a connecting disc 4, a thread 41, a through hole 42, a power head spindle 5, a pin 6, a first sealing ring 7, a second sealing ring 8, a spring 9 and a third sealing ring 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.
Referring to fig. 1 to 5, a floatable drill rod connecting device is mounted on a power head spindle 5, and includes a joint body 1 cooperatively connected with the power head spindle 5 and a limiting device disposed outside the joint body 1 and the power head spindle 5, a spring 9 having a floating positioning function is further disposed between the joint body 1 and the power head spindle 5, the limiting device includes an end cap 2 and a connecting disc 4 for connecting and fixing the joint body 1 and the power head spindle 5, and a transmission sleeve 3 cooperatively disposed between the end cap 2 and the joint body 1, the connecting disc 4 is fixed on the power head spindle 5, and the end cap 2 is fixedly connected with the connecting disc 4 through a fastener. The coupling body 1 is comprised of a tool joint 11 and a coupling body 12, which are typically friction welded together. The drill rod coupling 11 is a standard threaded drill rod coupling, similar to the drill rods used by automated drilling machines. The front end of the connecting body 12 has the same diameter as the drill rod joint 11, so that the clamping of the clamping device is facilitated, and the middle part is provided with the external spline 13 which is matched with the internal spline 31 of the transmission sleeve 3 for use and transmitting torque. The rear end is provided with a joint body sealing groove 14 for mounting a second sealing ring 8 and preventing slag discharge wind and water for drilling from leaking from a fit clearance. The end surface of the shaft section of the external spline 13 close to one side of the joint body sealing groove 14 (i.e. the side facing the power head spindle 5) is provided with a plurality of spring holes 16 which are distributed along the circumference and used for installing the springs 9. The center of the joint body 1 is provided with a water through hole 15 which is used for being communicated with the water through holes 15 of the main shaft and the drill rod to form a channel for slag discharge water or wind. The connecting disc 4 is connected with the power head spindle 5 through threads 41 and is matched with the end cover 2 for use, a plurality of bolt through holes 24 distributed along the circumference are formed in the end face of the connecting disc 4, a joint body through hole 21 is formed in one end of the end cover 2, and a dustproof ring mounting groove 22 for mounting a third sealing ring 10 is formed in the inner wall of the joint body through hole 21; the other end is provided with a flange 23, and the flange 23 is provided with a through hole 42 matched with the bolt through hole 24 on the connecting disc 4.
One end of the transmission sleeve 3 is provided with an internal spline 31 matched with the external spline 13 of the joint body 1 in an internal hole, and the other end is provided with a circular pressure plate 32; a socket ring 33 for inserting the main shaft is arranged on the end face of the circular pressure plate 32 facing the main shaft 5 of the power head, and a plurality of pin holes 35 which are distributed along the circumference and used for installing pins 6 are also arranged on the end face of the socket ring 33 and connected with the main shaft to transmit torque; the inner wall of the socket ring 33 is also provided with a transmission sleeve sealing groove 34 for mounting the first sealing ring 7, so that slag discharge wind and water for drilling are prevented from leaking out of a fit clearance.
In this embodiment, the length of the internal spline 31 is suitably greater than the length of the external spline 13 of the coupling body 1, leaving an adjustment distance S.
In this embodiment, when the non-operating state of the fastening is not required, the joint body 1 abuts forward against the inner end surface of the end cap 2 under the biasing force of the spring 9, so that the adjustment distance S =0.
When the joint is buckled with a front end drill rod, the joint body 1 rotates along with the power head main shaft 5 and advances. When the advancing speed of the joint body 1 is not matched with the rotating speed or the thread pitch (mainly, the speed is too high), the side surface of the thread tooth of the joint body 1 and the side surface of the thread tooth of the drill rod at the front end are mutually extruded to generate backward thrust along the axial direction of the drill rod, the joint body 1 is pushed backward, and the adjusting distance S is gradually increased. Due to the elastic force of the spring 9, the joint body 1 has an axial floating function, backward thrust is absorbed, rigid extrusion and friction between the joint body 1 and the front drill rod thread are changed into a process of elastic gradual change, and the thread of the joint body 1 is protected.
In addition, the axis of the joint body 1 and the axis of the front drill rod cannot be completely aligned, and radial eccentricity is likely to occur during fastening, so that the threads are also worn rapidly. Because the springs 9 at the rear end of the joint body 1 are distributed in a circumferential manner, the joint body 1 has radial eccentric floating and can deviate to the outer side along the radial direction, and the floating centering of the joint body 1 and a drill rod at the front end is realized.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (4)
1. The utility model provides a but floatage drilling rod connecting device installs on the unit head main shaft which characterized in that: the floating type power head device comprises a joint body matched and connected with a power head main shaft and a limiting device arranged outside the joint body and the power head main shaft, wherein a spring with floating positioning is arranged between the joint body and the power head main shaft; the limiting device comprises an end cover and a connecting disc which are used for connecting and fixing the joint body and the power head main shaft, and a transmission sleeve which is arranged between the end cover and the joint body in a matching way, the connecting disc is fixed on the power head main shaft, and the end cover is fixedly connected with the connecting disc through a fastener; the joint body comprises a drill rod joint and a connecting body which are fixedly connected, and an external spline matched with the transmission sleeve for use is arranged at one end of the connecting body close to the main shaft of the power head; the rear end surface of the external spline is also provided with a plurality of spring holes for mounting elastic pieces;
one end of the transmission sleeve is provided with an inner spline matched with the outer spline of the joint body in an inner hole, and the other end of the transmission sleeve is provided with a circular pressure plate; the circular pressure plate is provided with a socket ring for inserting the main shaft on the end surface facing the main shaft of the power head, the end surface of the socket ring is also provided with a plurality of pin holes which are distributed along the circumference and used for installing pins, the length of the internal spline is greater than that of the external spline of the joint body, and the inner wall of the socket ring is also provided with a transmission sleeve sealing groove for installing a first sealing ring.
2. The floatable drill rod connection device of claim 1, further comprising: a water through hole communicated with the main shaft and the drill rod is formed in the center of the joint body, and a joint body sealing groove used for mounting a second sealing ring is further formed in one end, close to the main shaft of the power head, of the joint body.
3. The floatable drill rod connection device of claim 1, further comprising: the connecting disc is connected with the power head main shaft through threads, and a plurality of bolt through holes distributed along the circumference are formed in the end face of the connecting disc.
4. The floatable drill rod connection device of claim 2, further comprising: one end of the end cover is provided with a joint body through hole, and the inner wall of the joint body through hole is provided with a dustproof ring mounting groove for mounting a third sealing ring; the other end is provided with a flange plate, and the flange plate is provided with a through hole matched with the bolt through hole on the connecting disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011156490.6A CN112253017B (en) | 2020-10-26 | 2020-10-26 | Floatable drill rod connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011156490.6A CN112253017B (en) | 2020-10-26 | 2020-10-26 | Floatable drill rod connecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112253017A CN112253017A (en) | 2021-01-22 |
| CN112253017B true CN112253017B (en) | 2022-10-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011156490.6A Active CN112253017B (en) | 2020-10-26 | 2020-10-26 | Floatable drill rod connecting device |
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| Country | Link |
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| CN (1) | CN112253017B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115434646B (en) * | 2022-08-09 | 2023-07-18 | 中煤科工集团西安研究院有限公司 | Elastic friction type water closet and control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202467695U (en) * | 2012-01-19 | 2012-10-03 | 河南易安能源科技有限公司 | Floating device and vehicle-mounted CBM (Coal Bed Methane) drilling machine using floating device |
| CN103410433A (en) * | 2013-08-14 | 2013-11-27 | 镇江安达煤矿专用设备有限公司 | Spring type mechanical buffering and floating device of drilling rig |
| CN103615192A (en) * | 2013-11-26 | 2014-03-05 | 河北华北石油荣盛机械制造有限公司 | Hydraulic top driving device of drilling machine |
| CN111794693A (en) * | 2020-07-27 | 2020-10-20 | 中煤科工集团重庆研究院有限公司 | Omnibearing floating drill rod |
-
2020
- 2020-10-26 CN CN202011156490.6A patent/CN112253017B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202467695U (en) * | 2012-01-19 | 2012-10-03 | 河南易安能源科技有限公司 | Floating device and vehicle-mounted CBM (Coal Bed Methane) drilling machine using floating device |
| CN103410433A (en) * | 2013-08-14 | 2013-11-27 | 镇江安达煤矿专用设备有限公司 | Spring type mechanical buffering and floating device of drilling rig |
| CN103615192A (en) * | 2013-11-26 | 2014-03-05 | 河北华北石油荣盛机械制造有限公司 | Hydraulic top driving device of drilling machine |
| CN111794693A (en) * | 2020-07-27 | 2020-10-20 | 中煤科工集团重庆研究院有限公司 | Omnibearing floating drill rod |
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| Publication number | Publication date |
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| CN112253017A (en) | 2021-01-22 |
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