CN215443907U - High-frequency torsional vibration rotary power head for rotary drilling rig - Google Patents
High-frequency torsional vibration rotary power head for rotary drilling rig Download PDFInfo
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- CN215443907U CN215443907U CN202121702060.XU CN202121702060U CN215443907U CN 215443907 U CN215443907 U CN 215443907U CN 202121702060 U CN202121702060 U CN 202121702060U CN 215443907 U CN215443907 U CN 215443907U
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Abstract
The utility model provides a high-frequency torsional vibration rotary power head for a rotary drilling rig, which comprises a power head box body, a drill rod component, a flexible rotary mechanism and a torsional vibration mechanism, wherein the flexible rotary mechanism and the torsional vibration mechanism are both arranged in the power head box body, the flexible rotary mechanism drives a drill rod component to rotate, and the torsional vibration mechanism is used for applying high-frequency torsional vibration changing according to a sine rule to the drill rod component. The rotary motion or the superimposed motion of rotary motion and high-frequency torsional vibration of the drill rod assembly can be realized. The rotary drilling machine disclosed by the utility model applies torsional vibration cutting to the rotary drilling hole, can effectively reduce the requirement of the rotary drilling machine on the torque of the power head during rock entering operation, realizes the effect of quickly entering the rock by the low-torque power head, further can effectively reduce the power requirement of the whole machine, improves the rock entering efficiency, and has the advantages of stable performance, lower cost and good adaptability.
Description
The technical field is as follows:
the utility model relates to the technical field of efficient drilling of earth surface covered strata, in particular to a drilling tool for realizing high-frequency torsional vibration rotary drilling by combining excitation torque generated by centrifugal force with rotary motion and longitudinal feed motion.
Background art:
when the existing rotary drilling rig drills into rock, the existing rotary drilling rig needs to have large pressure capacity and large power head power (namely, the power head has large torque and high rotating speed), in order to meet the large pressure capacity and the large power head power, the weight of the whole rotary drilling rig is increased rapidly, and the power of a whole engine is increased rapidly, so that during rock drilling operation, the power consumption is very high, and the environmental protection requirement is not met.
The technology of applying high-frequency impact vibration during drilling and quickly drilling holes is widely applied to the field of small hole forming of rock drilling machines, sound wave drilling machines and the like. At present, the research on the rotary drilling machine vibration pore-forming is mainly in the impact vibration direction, but the drilling machine pore-forming diameter is large due to the rotary drilling machine, the depth is deep, the drill rod is mostly a plurality of sections of telescopic drill rods, the weight is large, the impact vibration energy consumption is large, and the drill bit position with the depth of dozens of meters is hardly transmitted, so the impact vibration drilling method is not applied to the rotary drilling machine all the time. The dilemma that the existing rotary drilling rig has poor rock entering capability of a low-power head, namely a low-torque power head, is a problem which is not solved late, so that the use of the rotary drilling rig adopting the low-torque power head is limited when the operation is required to enter the rock. How to reduce the power consumption of the whole machine under the condition of meeting the rock entering requirement, namely reducing the power consumption of the power head becomes the problem to be solved urgently.
The utility model has the following contents:
in order to solve the problems, the utility model provides a high-frequency torsional vibration rotary power head for a rotary drilling rig.
In order to realize the technical effects, the technical scheme of the utility model is as follows:
a high-frequency torsional vibration rotary power head for a rotary drilling rig comprises a power head box body, a drill rod assembly, a flexible rotary mechanism and a torsional vibration mechanism, wherein the flexible rotary mechanism and the torsional vibration mechanism are both installed in the power head box body; the torsional vibration mechanism is in driving connection with the vibration power input device, and is fixedly connected with the drill rod assembly through the flexible swing mechanism, and the flexible swing mechanism is used for applying high-frequency torsional vibration changing according to a sine rule to the drill rod assembly, so that the drilling action of quickly cutting the drill rod assembly into rock under the working condition difficult to drill is realized.
Lubricating oil can be injected into the power head box body to lubricate each moving part, and in order to ensure the cleanness of the oil and the lubrication effect, each joint part of the power head box body needs to be provided with a corresponding sealing part to ensure good sealing.
Preferably, the flexible slewing mechanism comprises a slewing large gear ring, an active slewing block, flexible connecting pieces and a passive slewing block, wherein the passive slewing block and the active slewing block are coaxially arranged and are connected through a plurality of flexible connecting pieces, and a certain degree of rotational freedom of axial rotation is formed between the passive slewing block and the active slewing block. The driving rotary block is fixedly connected with the rotary large gear ring, the rotary large gear ring is driven by the rotary power input device to rotate, and the drill rod assembly is installed on the driven rotary block.
Preferably, the rotary power input device is mounted on the powerhead housing.
Preferably, the flexible connector is a spring or a rubber connector.
Preferably, torsional vibration mechanism includes the vibration support and establishes ring gear, vibration upper tooth ring, a plurality of eccentric blocks and rather than supporting vibration gear shaft under the vibration in the vibration support, the vibration gear shaft with the vibration support rotates to be connected, the eccentric block passes through the vibration gear shaft is installed in the vibration support, the vibration gear shaft with the ring gear meshing is gone up in the vibration, the vibration upper tooth ring pass through the vibration connecting seat with ring gear fixed connection under the vibration, and can with the synchronous revolution of ring gear under the vibration, the ring gear is in under the vibration power input device's drive rotates down.
Preferably, the vibratory power input device is mounted on the powerhead housing.
Preferably, the number of the eccentric blocks is even, and the eccentric blocks are symmetrically distributed along the circumference of the vibration upper gear ring.
Preferably, the rotary power input device is mounted on the powerhead housing.
Preferably, the rotary power input device comprises a rotary driving motor and a plurality of rotary gears.
Preferably, the vibratory power input device is mounted on the powerhead housing.
Preferably, the vibration power input device comprises a vibration driving motor and a plurality of vibration gears.
The utility model has the beneficial effects that:
the utility model provides a high-frequency torsional vibration rotary power head for a rotary drilling rig, which comprises a power head box body, a drill rod assembly, a flexible rotary mechanism and a torsional vibration mechanism, wherein a torsional vibration cutting process is applied to a rotary drilling hole, the torsional vibration mechanism generates resultant torque changing according to a sine rule, and high-frequency torsional vibration changing according to the sine rule is applied to a drill rod assembly through transmission of the flexible rotary mechanism, so that the rotary drilling rig can effectively reduce the requirement on the torque of the power head during rock entering operation, the effect of quickly entering a small-torque power head into a rock is realized, the power requirement of the whole machine can be effectively reduced, the rock entering efficiency is improved, the performance is stable, the cost is lower, and the adaptability is good, so that the difficult problem of the rotary drilling rig of the small-torque power head in rock entering is solved. In addition, due to the buffering effect of the flexible connecting piece, the flexible swing mechanism can be protected from rigid impact when the torsional vibration mechanism works.
Description of the drawings:
FIG. 1 is a schematic structural diagram of a high-frequency torsional vibration rotary power head for a rotary drilling rig according to the present invention;
FIG. 2 is a schematic structural diagram of a flexible swing mechanism according to the present invention;
FIG. 3 is a schematic diagram of an explosive structure of the flexible swing mechanism of the present invention;
FIG. 4 is a schematic view of the torsional vibration mechanism of the present invention;
FIG. 5 is a schematic view of the installation position of the eccentric block in the present invention;
fig. 6 is a schematic diagram of the operation of the power head of the present invention.
In the figure: 1-a drill pipe sleeve assembly; 2-a rotary power input device; 3-a rotary gear; 4-turning a large gear ring; 5, an active rotation block; 51, a connecting part a; 6-flexible connecting piece; 7-passive turning block; 71 connecting part b; 8-vibrating the support; 9-a vibration gear shaft; 10-vibrating the upper gear ring; 11-a vibration connecting seat; 12-an eccentric mass; 13-vibrating the lower gear ring; 14-a vibration gear; 15-a vibration power input device; 16-power head box; 17 a connecting member; 001-a pressurizing oil cylinder; 1 a-a drill rod; 003-high frequency torsional vibration rotary power head; 1 b-drill bit.
The specific implementation mode is as follows:
the following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model more readily understood by those skilled in the art, and thus will more clearly and distinctly define the scope of the utility model.
See fig. 1 to 5, a dig rig soon and use high frequency torsional vibration gyration unit head, includes unit head box 16, drilling rod subassembly 1, flexible rotation mechanism and torsional vibration mechanism, drilling rod subassembly 1 includes drilling rod 1a and drill bit 1b, flexible rotation mechanism and torsional vibration mechanism all install in unit head box 16, just flexible rotation mechanism is connected with gyration power input device 2 drives, torsional vibration mechanism is connected with the 15 drives of vibration power input device. In addition, the flexible swing mechanism is fixedly connected with the drill rod assembly 1 and drives the drill rod assembly 1 to rotate, so that the drilling action of cutting into rock under the common working condition of the drill rod assembly 1 is realized; the torsional vibration mechanism is fixedly connected with the drill rod assembly 1 through the flexible swing mechanism and is used for applying high-frequency torsional vibration which changes according to a sine rule to the drill rod assembly 1, so that the drilling action of quickly cutting into the rock of the drill rod assembly 1 under the working condition that the rock is cut into by difficult drilling is realized.
Specifically, flexible rotation mechanism is including gyration bull gear 4, initiative rotation block 5, flexible connecting piece 6, passive rotation block 7 and the 5 coaxial arrangement of initiative rotation block, and between the two through 6 fixed connection of a plurality of flexible connecting piece, flexible connecting piece 6 can be elastic component such as spring or rubber connecting piece, passive rotation block 7 and initiative rotation block 5 have certain rotatory degree of freedom around axial rotation each other. The driving rotary block 5 is fixedly connected with the rotary large gear ring 4 through a connecting piece 17, the rotary large gear ring 4 is driven by the rotary power input device 2 to rotate, and the drill rod assembly 1 is installed on the driven rotary block 7. Specifically, the active rotary block 5 is provided with a plurality of connecting parts a 51, the passive rotary block 7 is provided with a plurality of connecting parts b 71, and the connecting parts a 51 and the connecting parts b 71 are arranged at intervals after installation. A plurality of flexible connecting pieces 6 such as springs are arranged between the connecting part a 51 and the connecting part b 71, so that the passive rotary block 7 and the active rotary block 5 are coaxially arranged and have a certain degree of rotational freedom around the axial direction.
The rotary power input device 2 is installed on the power head box 16, and the rotary power input device 2 is composed of at least one group of rotary driving motor and speed reducer (the rotary driving motor and the speed reducer can be assembled separately or integrated) and a matched number of rotary gears 3.
When the driving motor of the rotary power input device 2 rotates, the rotary gear 3 drives the rotary large gear ring 4 to rotate, the rotary large gear ring 4 drives the driving rotary block 5 to rotate, and the driving rotary block 5 pushes the driven rotary block 7 to rotate through the flexible connecting piece 6, so that the drill rod component 1 is driven to rotate, and the common rotary drilling action of the drill rod component 1 is realized.
The torsional vibration mechanism comprises a vibration support 8, a vibration lower gear ring 13, a vibration upper gear ring 10, a plurality of vibration gear shafts 9 and eccentric blocks 12, wherein the vibration lower gear ring 13, the vibration upper gear ring 10 and the plurality of vibration gear shafts 9 and the eccentric blocks 12 are arranged in the vibration support 8, and the number of the vibration gear shafts 9 and the number of the eccentric blocks 12 are equal. Vibration gear shaft 9 with 8 swivelling joints of vibration support, eccentric block 12 passes through vibration gear shaft 9 is installed in the vibration support 8, vibration gear shaft 9 with ring gear 10 meshing on the vibration, ring gear 10 on the vibration through vibration connecting seat 11 with ring gear 13 fixed connection under the vibration, and can with ring gear 13's synchronous revolution under the vibration, ring gear 13 is in under the vibration the drive of vibration power input device 15 is rotated down. The vibration support 8 and the passive rotating block 7 can be fixedly connected through bolts, buckles, rivets and the like.
The vibratory power input 15 is mounted on the powerhead housing 16. The vibration power input means 15 is constituted by at least one set of vibration gears 14 in a number to which the vibration driving motor is matched. The number of the eccentric blocks 12 is more than or equal to 2 and is even, the specific number can be determined according to actual needs and the size of the space of the torsional vibration mechanism, and the eccentric blocks 12 are symmetrically distributed along the circumference of the vibration upper gear ring 10. The vibration upper gear ring 10 and the vibration lower gear ring 13 are connected together through a vibration connecting seat 11, so that the vibration upper gear ring 10 also rotates along with the vibration upper gear ring, and then the vibration upper gear ring is driven to be installed on a vibration support 8, and a vibration gear shaft 9 meshed with the vibration upper gear ring 10 rotates to drive an eccentric block 12 to rotate, centrifugal force generated when each group of the eccentric blocks 12 rotate forms resultant torque changing according to a sine rule, the resultant torque acts on the vibration support 8, and is transmitted to a driven rotary block 7 connected with the vibration upper gear ring, a drill rod assembly 1, and high-frequency torsional vibration changing according to the sine rule is applied to the drill rod assembly 1.
Because a plurality of groups of vibration gear shafts 9 arranged on the vibration bracket 8 are symmetrically arranged on the same rotary radius R, the pinions on the vibration gear shafts are meshed with the outer gear ring of the vibration upper gear ring 10, and the phase of the eccentric block 12 on each vibration gear shaft 9 is the same with the phase of the connecting line of the rotary centers of the vibration upper gear ring 10 relative to the axle center of the vibration gear shaft 9. The process of applying the high-frequency torsional vibration changing according to the sine rule to the drill rod component 1 by the torsional vibration mechanism is as follows:
when the upper vibrating gear ring rotates under the action of external force, the vibrating gear shaft 9 drives the eccentric blocks 12 on the upper vibrating gear ring to rotate in opposite directions, and each eccentric block 12 has the same angular speed and phase; the rotation of each eccentric mass 12 generates a corresponding oscillating tooth directed toward itCentrifugal force F of the centre of rotation of the wheel axle 9Separation deviceWhen the phase angle of the eccentric mass 12 is alpha, the centrifugal force FSeparation deviceCan be decomposed into radial component force F pointing to the rotation center of the upper gear ring in vibrationDistance rTangential component force F in tangential directionFrom τAnd is provided with
FDistance r＝FSeparation device×cosα
FFrom τ＝FSeparation device×sinα
Since the weight, size, rotational speed, and phase angle of each eccentric mass 12 are the same, the centrifugal force F is generatedSeparation deviceThe magnitudes are also equal, so that all centrifugal forces FSeparation deviceRadial component force FDistance rThe upper gear ring 10 is vibrated to rotate the center, and the resultant force is 0; tangential component F of each centrifugal forceFrom τA torque M with respect to the center of rotation of the oscillating upper ring gear 10 is generated,
M＝Ffrom τ×R
When there are n sets of eccentric masses, all centrifugal forces FSeparation deviceThe resultant torque produced is
∑M＝n×FSeparation deviceThe x sin α × R is known from a formula of a resultant torque, the resultant torque is a sine function of a rotation phase angle of the eccentric block 12, the magnitude and the direction of the resultant torque periodically change along with the rotation of the eccentric block 12, the resultant torque acts on the vibration support 8, and since the vibration support 8 is fixedly connected with the passive rotating block 7, the passive rotating block 7 generates a periodically changing pressure on the flexible connecting block 6 after receiving the torque generated by the rotation of the eccentric block 12, so that the flexible connecting block 6 deforms, and thus the passive rotating block 7 and the active rotating block 5 periodically rotate relative to each other, that is, the drill rod assembly 1 generates torsional vibration. Namely, high-frequency torsional vibration which changes sinusoidally is applied to the drill rod assembly 1 through transmission of the flexible slewing mechanism.
In addition, the drilling method of the high-frequency torsional vibration rotary power head for the rotary drilling rig comprises the following steps:
s1, judging the working condition, if the working condition belongs to the working condition of drilling and cutting into rock easily, turning to the step S2, and if the working condition belongs to the working condition of drilling and cutting into rock difficultly, turning to the step S3;
and (4) judging the working condition: when the footage mean value is obviously reduced in unit operation time or pressurized drilling operation is performed, if footage is obviously absent, the condition that drilling and cutting into rock are difficult can be judged; otherwise, the working condition of cutting into rock is the easy drilling.
S2, closing the vibration power input device 15, opening the rotary power input device 2, and driving the drill rod assembly 1 to rotate by the flexible rotary mechanism, so that rotary drilling operation of the rotary drilling rig under the working condition of ordinary rock cutting and entering is realized;
s3, both the vibration power input device 15 and the rotary power input device 2 are opened, and the torsional vibration mechanism generates high-frequency torsional vibration which changes according to a sine rule and acts on the drill rod assembly 1 while the flexible rotary mechanism drives the drill rod assembly 1 to rotate, so that the drilling operation of quickly cutting into the rock of the rotary drilling rig under the working condition of cutting into the rock by difficult drilling is realized.
In addition, in step S2, only the rotary power input device 2 is turned on, the vibration power input device 15 is turned off, the rotary power input device 2 drives the rotary bull gear 4 to drive the driving rotary block 5 to rotate, and the driven rotary block 7 is driven to rotate through the plurality of sets of flexible connecting pieces 6, so as to drive the drill rod assembly 1 to rotate, thereby realizing the ordinary rotary drilling action of driving the drill rod assembly 1. At this time, the vibration power input device 15 is turned off, so there is no active vibration power source input. However, because the vibration support 8 is connected with the passive rotary block 7, the vibration support 8 rotates along with the passive rotary block 7 at the moment, so that the plurality of groups of vibration gear shafts 9 and the eccentric blocks 12 which are arranged on the vibration support 8 are driven to rotate, and because the rotating speed is very low (about 10-20r/min), the frequency of the torsional vibration moment which is generated by the plurality of groups of eccentric blocks 12 and changes in a sine rule is low, and the method is similar to common rotary drilling, namely a common rotary drilling construction method at the moment.
In step S3, when the rotary power input device 2 is turned on, the vibration power input device 15 is turned on in an overlapping manner, the vibration power input device 15 drives the vibration lower gear ring 13 to rotate at a high speed, and further drives the vibration upper gear ring 10, the vibration gear shaft 9 and the eccentric blocks 12 to rotate at a high speed, and high-frequency torsional vibration moments which are generated by the multiple groups of eccentric blocks 12 and change according to a sine rule act on the vibration support 8 and finally act on the drill rod assembly 1, and high-frequency torsional impact vibrations which change according to the sine rule are applied to the drill rod assembly, namely, the high-frequency torsional vibration drilling construction method is used, so that the drilling operation of quickly cutting into rock of the rotary drilling rig is realized.
Referring to fig. 6, a pressurizing oil cylinder 001 is connected to the high-frequency torsional vibration rotary power head 003, and when the drill rod assembly rotates or rotates and highly matches torsional vibration superposition motion, downward pressure applied by the pressurizing oil cylinder 001 and the weight of the drill rod assembly 1 are added, so that the drill bit 1b realizes torsional vibration drilling under the actions of the above forces.
In the present disclosure, terms such as "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the respective portions of the present disclosure, and are not to be construed as limiting the present disclosure.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (9)
1. The utility model provides a dig rig soon and use high frequency torsional vibration gyration unit head which characterized in that: the drilling machine comprises a power head box body (16), a drill rod assembly (1), a flexible swing mechanism and a torsional vibration mechanism, wherein the flexible swing mechanism and the torsional vibration mechanism are both installed in the power head box body (16), the flexible swing mechanism is in driving connection with a swing power input device (2), and the torsional vibration mechanism is in driving connection with a vibration power input device (15); the flexible swing mechanism is fixedly connected with the drill rod component (1) and can drive the drill rod component (1) to rotate; the torsional vibration mechanism is fixedly connected with the drill rod assembly (1) through the flexible swing mechanism and is used for applying high-frequency torsional vibration changing according to a sine rule to the drill rod assembly (1).
2. The high-frequency torsional vibration rotary power head for the rotary drilling rig according to claim 1, characterized in that: flexible rotation mechanism is including gyration bull gear (4), initiative rotation block (5), flexonics spare (6) and passive rotation block (7), passive rotation block (7) and initiative rotation block (5) coaxial arrangement, and connect through a plurality of flexonics spare (6) between the two, have certain rotatory degree of freedom around axial rotation each other, initiative rotation block (5) with gyration bull gear (4) and fixed connection, gyration bull gear (4) are in the rotation under the drive of gyration power input device (2), drill pipe subassembly (1) is installed on passive rotation block (7).
3. The high-frequency torsional vibration rotary power head for the rotary drilling rig according to claim 2, characterized in that: the flexible connecting piece (6) is a spring or a rubber connecting piece.
4. The high-frequency torsional vibration rotary power head for the rotary drilling rig according to claim 1 or 2, characterized in that: torsional vibration mechanism is including vibrating support (8) and establishing ring gear (13), vibration go up ring gear (10), a plurality of eccentric block (12) and rather than supporting vibration gear shaft (9) under the vibration in vibrating support (8), vibration gear shaft (9) with vibrating support (8) are rotated and are connected, eccentric block (12) are passed through vibration gear shaft (9) are installed in vibrating support (8), vibration gear shaft (9) with ring gear (10) meshing in the vibration, ring gear (10) pass through vibration connecting seat (11) on the vibration with ring gear (13) fixed connection under the vibration, and can with ring gear (13) synchronous revolution under the vibration, ring gear (13) are in under the vibration the drive of vibration power input device (15) is rotated down.
5. The high-frequency torsional vibration rotary power head for the rotary drilling rig according to claim 4, characterized in that: the number of the eccentric blocks (12) is even, and the eccentric blocks are symmetrically distributed along the circumference of the vibration upper gear ring (10).
6. The high-frequency torsional vibration rotary power head for the rotary drilling rig according to claim 1, characterized in that: the rotary power input device (2) is arranged on the power head box body (16).
7. The rotary drilling rig high-frequency torsional vibration rotary power head according to claim 1, wherein the rotary power input device (2) comprises a rotary driving motor and a plurality of rotary gears (3).
8. The high-frequency torsional vibration rotary power head for the rotary drilling rig according to claim 1, characterized in that: and the vibration power input device (15) is arranged on the power head box body (16).
9. The rotary power head with high-frequency torsional vibration for the rotary drilling rig according to claim 1, wherein the vibration power input device (15) comprises a vibration driving motor and a plurality of vibration gears (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121702060.XU CN215443907U (en) | 2021-07-24 | 2021-07-24 | High-frequency torsional vibration rotary power head for rotary drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121702060.XU CN215443907U (en) | 2021-07-24 | 2021-07-24 | High-frequency torsional vibration rotary power head for rotary drilling rig |
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| Publication Number | Publication Date |
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| CN215443907U true CN215443907U (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121702060.XU Active CN215443907U (en) | 2021-07-24 | 2021-07-24 | High-frequency torsional vibration rotary power head for rotary drilling rig |
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| CN (1) | CN215443907U (en) |
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2021
- 2021-07-24 CN CN202121702060.XU patent/CN215443907U/en active Active
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