Multi-directional rock-breaking vibration device

Abstract

This invention relates to the field of downhole operation technology and is a multi-directional rock-breaking vibration device. It includes an exciter outer cylinder, a drive unit, an eccentric wheel, a drill bit shaft, a piston liner, and a counterweight. The drive unit, eccentric wheel, and drill bit shaft are sequentially and sequentially mounted from top to bottom inside the exciter outer cylinder. The output end of the drive unit is connected to the upper end of the eccentric wheel, and the lower end of the eccentric wheel is connected to the upper end of the drill bit shaft. The lower end of the drill bit shaft is located below the exciter outer cylinder. This invention has a reasonable and compact structure and is easy to use. The drive unit drives the eccentric wheel to rotate, generating circumferential vibration. During the rotation of the eccentric wheel, static friction is converted into dynamic friction, causing circumferential vibration of the drill bit shaft. This vibration of the drill bit shaft causes the drill bit to generate circumferential impact. The counterweight and eccentric wheel respectively achieve axial and circumferential impact, completing multi-dimensional impact and assisting the drill bit in rock breaking. It features stability, reliability, and good impact effect.

Description

Technical Field

[0001] This invention relates to the field of downhole operation technology and is a multi-directional rock-breaking vibration device. Background Technology

[0002] As drilling depth increases, the rock encountered in the formation becomes harder, more abrasive, and has a higher drillability rating, leading to severe stick-slip vibration of the drill bit and a significant decrease in mechanical drilling rate, severely impacting the speed and cost of oil and gas exploration and development. To improve the mechanical drilling rate in deep, hard formations, domestic and international scholars have conducted extensive research on percussion drilling technology and developed various percussion drilling tools. Field applications have shown that percussion drilling tools are highly reliable and effectively increase drilling speed. Using torsional or rotary percussion drilling tools can significantly improve the drilling rate in difficult formations; therefore, research on percussion drilling tools has become a hot topic in recent years, resulting in the development of various hydraulically or mechanically driven rotary, torsional, or combined percussion drilling tools. Previous studies have extensively investigated the rock-breaking efficiency of PDC drill bits under rotary and torsional percussion conditions, but research on the rock-breaking efficiency of PDC drill bits in different rocks under combined percussion conditions is still limited.

[0003] Increasing drill bit cutting force and reducing or eliminating stick-slip vibration are effective means to improve drilling efficiency. Research has found that existing axial impact and torsional impact tools are not ideal for increasing drilling speed. In hard formations, torsional impact cutting makes rocks more prone to brittle fracture, improving drill bit penetration. However, in softer formations, it produces smaller rock cuttings, easily causing drill bit mud buildup. Axial impact can increase the cutting depth of PDC drill bits, but the increased impedance torque causes torsional vibration, easily leading to drill bit chipping. Addressing the limitations of traditional percussion drilling technology in terms of drill bit compatibility and formation adaptability, a composite percussion drilling tool has been proposed. This tool provides a three-dimensional rock-breaking effect, increasing mechanical drilling speed while reducing drill bit torque fluctuations and extending drill bit life.

[0004] Chinese patent document CN111021947B discloses a rotary impact tool, characterized by comprising an outer cylinder, an upper mandrel, a lower mandrel, a mandrel anvil, an impact generator, an impact drive assembly, an impact execution assembly, an upper floating sealing assembly, a lower floating sealing assembly, and a magnetic adsorption device. An upper mandrel capable of rotation is suspended on the upper inner side of the outer cylinder, and a lower mandrel capable of rotation is mounted on the lower inner side of the outer cylinder. An upper anvil is seated in the upper inner side of the lower mandrel, and the lower part of the upper mandrel is fitted into the mounting anvil. The lower part of the upper mandrel is connected to the upper part of the lower mandrel, and the upper mandrel can move up and down relative to the lower mandrel. A magnetic adsorption device is fixed to the lower part of the upper mandrel. The device comprises an impact generator that strikes the mandrel anvil; an impact drive assembly that is fitted inside the outer cylinder and rotates synchronously with the lower mandrel is mounted on the outer side of the lower mandrel; an impact execution assembly that sits on the impact drive assembly is mounted inside the outer cylinder, and the impact execution assembly can periodically reciprocate up and down with the rotation of the impact drive assembly; an upper floating seal assembly fitted on the upper outer side of the upper mandrel is provided between the upper mandrel and the outer cylinder; a lower floating seal assembly with a limit position installed on the lower inner side of the outer sleeve is fitted between the lower mandrel and the outer cylinder; a magnetic adsorption device is provided between the upper mandrel and the outer cylinder at the position corresponding to the upper floating seal assembly and the impact execution assembly; a first ring platform and a second ring platform are distributed vertically at intervals on the upper inner side of the outer cylinder; the upper end of the upper mandrel is located above the first ring platform; the upper mandrel... The lower end is located below the second ring platform. An upper ring limiting component is provided on the outer side of the upper mandrel corresponding to the position between the first and second ring platforms. Thrust bearings are fitted between the upper mandrel and the outer cylinder at positions corresponding to the first ring platform and the ring limiting component, and between the ring limiting component and the second ring platform. Upper wear-resistant sleeves are fitted between the first ring platform and the upper mandrel, and between the second ring platform and the upper mandrel. The outer cylinder includes an upper connector, a bearing housing sleeve, an impact sleeve, an intermediate sleeve, and a lower sleeve. The inner side of the upper end of the bearing housing sleeve is integrally formed with the outer side of the lower end of the first ring platform. The outer side of the upper part of the first ring platform is fixedly installed with the inner side of the lower part of the upper connector, and the upper connector sits on the bearing housing sleeve. The inner side of the upper end of the impact sleeve is integrally formed with the outer side of the lower end of the second ring platform. The outer side of the upper end of the second ring platform... The lower end of the bearing sleeve is fixedly installed together with the inner side of the lower end of the bearing body sleeve, and the bearing body sleeve is seated on the impact sleeve. The upper end of the lower mandrel is located above the intermediate sleeve. The impact actuator is located below the second ring platform. The impact drive assembly is located above the intermediate sleeve. The lower end of the impact sleeve is provided with an outer ring groove. An outer wear-resistant sleeve is fixedly installed in the outer ring groove. The lower end of the impact sleeve is fixedly installed together with the upper end of the intermediate sleeve. The lower end of the intermediate sleeve is fixedly installed together with the upper end of the lower sleeve. A middle cylinder sealing sleeve located in the lower sleeve is fixedly installed on the lower end of the intermediate sleeve. The middle cylinder sealing sleeve is fitted into the lower mandrel and an O-ring seal is installed between the two. The upper inner side of the intermediate sleeve is provided with a middle wear-resistant ring groove. A middle wear-resistant sleeve fitted into the outer side of the lower mandrel is provided in the middle wear-resistant ring groove.The floating sealing assembly includes an upper valve body, a dust seal, an upper one-way seal, a first bushing, and an upper sealing ring. The upper one-way seal prevents liquid from permeating from top to bottom. An upper valve body is fitted between the upper mandrel and the upper connector, corresponding to the position above the first annular platform. Between the upper valve body and the upper mandrel, a dust seal, an upper one-way seal, and a first bushing are sequentially spaced from top to bottom. A first inner annular groove is provided inside the upper valve body, corresponding to the position between the dust seal and the upper one-way seal. At least one first connecting hole, capable of communicating with the first inner annular groove, is evenly distributed along the circumference on the outer side of the upper valve body corresponding to the position of the first inner annular groove. At least one downward-opening blind connecting hole is evenly distributed along the circumference at the lower end of the upper valve body, corresponding to the position below the first inner annular groove. The upper end of the blind connecting hole... Located above the first bushing, at least one upper sealing ring is provided between the upper valve body and the upper connector at intervals below the first inner ring groove. A second connecting hole is provided on the outer side of the upper valve body between every two adjacent upper sealing rings, connecting to the corresponding blind hole. At least one third connecting hole is provided on the inner side of the upper valve body between the upper one-way sealing ring and the first bushing, connecting to the corresponding blind hole. An upper mounting channel is provided between the upper part of the bearing sleeve and the first annular platform. One end of the upper mounting channel is located on the upper outer side of the bearing sleeve and is fitted with an upper mounting plug. The other end of the upper mounting channel is located at the upper end of the first annular platform. The lower floating sealing assembly includes a lower valve body, a third bushing, and... A second bushing, a lower one-way sealing ring, and a lower sealing ring are provided. A lower valve body is fitted between the lower mandrel and the lower sleeve at the middle position of the lower sleeve. A first valve body annular platform is provided on the upper inner side of the lower valve body. A second bushing is provided between the inner side of the first valve body annular platform and the lower mandrel. A second valve body annular platform is provided on the lower inner side of the lower valve body. A lower one-way sealing ring that prevents liquid from permeating from bottom to top is provided between the upper inner side of the second valve body annular platform and the lower mandrel. A lower sealing ring is provided between the upper outer side of the lower valve body and the lower sleeve. A second inner annular groove is provided on the inner side of the lower valve body corresponding to the position between the second bushing and the lower one-way sealing ring. At least one vertically penetrating connecting groove is distributed along the circumference on the inner side of the first valve body annular platform. At least one opening groove is distributed along the circumference on the lower outer side of the lower valve body. The downward-facing sliding groove has a limit mounting hole that runs through the inside and outside of the lower sleeve at the upper end of each sliding groove. A limit plug with its inner end located in the corresponding sliding groove is fixedly installed in each limit mounting hole. A lower mounting through hole is provided on the lower sleeve at the position between the middle sleeve and the lower valve body. A lower mounting plug is installed in the lower mounting through hole. A lower ring platform is provided on the inner side of the lower end of the lower sleeve. An inner ring groove is provided on the inner side of the middle part of the lower ring platform. A third bushing is installed in the inner ring groove. A fourth connecting hole that runs through the inside and outside of the inner ring groove is provided on the lower ring platform at the position corresponding to the outer side of the inner ring groove. The magnetic adsorption device is a cylindrical magnet. At least two mounting blind holes are evenly distributed along the circumference at the upper end of the first ring platform. A cylindrical magnet is fixedly installed in each mounting blind hole. The rotary impact tool has the following technical defects: (1) It can only provide single-dimensional impact; (2) It can provide small impact force and needs to be matched with a highly aggressive drill bit to achieve speed and efficiency, but it cannot achieve the purpose of cost reduction.(3) The speed-up effect is severely limited when encountering difficult-to-drill formations with alternating soft and hard surfaces.

[0005] Chinese patent document CN 111305748 B discloses a circumferential impact drilling speed-up tool, characterized by comprising a body, a mandrel, a circumferential impact assembly, a flow divider cap, and a lower connector. The body contains a mandrel with a main flow channel running vertically through its center. A flow divider cap is fixedly mounted on the upper end of the mandrel. At least one elongated guide hole running through both the inner and outer sides of the mandrel's center is provided. A limiting ring is provided on the lower outer side of the mandrel. The circumferential impact assembly includes an impact drive, an impact generator, and an impact actuator. A flow divider cap is fitted on the outer side of the mandrel corresponding to the position between the flow divider cap and the limiting ring. An impact drive component that periodically reciprocates on a shaft has an impact actuator located below a spindle on its outer side. An impact generator, mounted on the outer side of the upper inner side of the impact actuator, strikes the impact actuator as it rotates with the impact drive component. The lower inner side of the impact actuator is fixedly mounted to the lower outer side of the spindle, and a lower connector is fixedly mounted to the lower outer side of the impact actuator. The lower inner side of the actuator body is mounted to the upper outer side of the lower connector. A wear-resistant component is provided between the lower end of the impact drive component and the limiting ring platform. The impact drive component includes... The system includes a distribution plate, with the distribution plate fitted onto the outer side of the mandrel's center; an impact generator including an impact hammer fitted onto the outer side of the distribution plate; an impact actuator including an anvil, with the lower part of the anvil fitted onto the outer side of the impact hammer, the inner side of the lower part of the anvil fixedly mounted to the outer side of the lower end of the mandrel, and a lower connector fixedly mounted on the outer side of the lower end of the anvil; it also includes a fixing cap, an inner mounting neck, a middle mounting neck, and an upper mounting block. The inner mounting neck is fixedly mounted on the upper end of the distribution plate, the middle mounting neck is fixedly mounted on the upper end of the impact hammer, and two fixing blocks are evenly distributed around the circumference of the upper end of the anvil; corresponding to the distribution cap... A fixed pressure cap is provided on the outer side of the upper part of the mandrel at the square position. A fixed inner ring groove is provided on the inner side of the lower end of the fixed pressure cap corresponding to the inner and middle mounting neck positions. The inner and middle mounting necks are both located in the fixed inner ring groove. A fixed limiting groove is provided on the lower side of the fixed pressure cap corresponding to each fixed block position. Each fixed block is located in the fixed limiting groove at the corresponding position. It also includes a wear-resistant neck, a wear-resistant ring, and wear-resistant blocks. A wear-resistant neck is fixedly installed at the lower end of the distribution plate. A wear-resistant ring is fixedly installed at the upper end of the limiting ring platform. At least four wear-resistant blocks are evenly distributed around the circumference at the lower end of the wear-resistant neck and the upper end of the wear-resistant ring. This circumferential impact drilling speed-up tool has the following technical defects: (1) It can only provide single-dimensional impact; (2) It is designed with a structure of multiple reversing ports, which makes the overall structure complex and easily subject to erosion damage; (3) It will cause torsional vibration of the drill bit, which will lead to the danger of drill bit tooth breakage. Summary of the Invention

[0006] This invention provides a multi-directional rock-breaking vibration device that overcomes the shortcomings of the prior art and can effectively solve the problems of existing impact acceleration devices having a single impact mode and poor rock-breaking effect.

[0007] The technical solution of the present invention is achieved through the following measures: A multi-directional rock-breaking vibration device includes an exciter outer cylinder, a drive device, an eccentric wheel, a drill bit shaft, a piston liner, and a counterweight. The drive device, the eccentric wheel, and the drill bit shaft are sequentially and sequentially installed from top to bottom inside the exciter outer cylinder. The output end of the drive device is connected to the upper end of the eccentric wheel, and the lower end of the eccentric wheel is connected to the upper end of the drill bit shaft. The lower end of the drill bit shaft is located below the exciter outer cylinder. A central channel is provided in the middle of the drill bit shaft, and two upper water outlet holes are provided at intervals in the front and back of the upper part of the drill bit shaft. Two lower water outlet holes are provided at intervals in the left and right of the lower part of the drill bit shaft. A piston liner with its lower end above the lower water outlet hole is provided on the outer side of the drill bit shaft corresponding to the position of the upper water outlet hole. An upper impact hole is provided on the outer side of the upper part of the piston liner corresponding to the position of the upper water outlet hole, and a lower impact hole is provided on the outer side of the lower part of the piston liner corresponding to the position of the upper impact hole. A counterweight is provided on the outer side of the middle part of the piston liner. An upper high-pressure impact ring groove is provided on the inner side of the upper end of the counterweight, and a lower high-pressure impact ring groove is provided on the inner side of the lower end of the counterweight.

[0008] The following are further optimizations and / or improvements to the above-mentioned technical solution:

[0009] The above may also include a positioning component and a wear-resistant sleeve. The drive device includes a stator, a rotor, and a screw motor. A positioning component is fixedly installed on the inner side of the upper part of the exciter's outer cylinder. A wear-resistant sleeve is provided on the inner side of the middle part of the exciter's outer cylinder. A screw motor, a rotor, and an eccentric wheel are installed between the positioning component and the wear-resistant sleeve. The upper end of the screw motor abuts against the positioning component. The lower end of the screw motor is provided with a rotor. An eccentric wheel is fixedly installed inside the rotor. The lower end of the eccentric wheel abuts against the wear-resistant sleeve. The upper end of the drill bit rod is connected to the inner side of the lower end of the eccentric wheel through a spline drive. A stator is provided on the outer side of the screw motor. The positioning component is provided with at least one first guide hole that runs vertically through the shaft. The eccentric wheel is provided with a guide cavity that opens downwards. The upper outer side of the eccentric wheel is provided with at least one second guide hole that can communicate with the guide cavity.

[0010] The above may also include an upper bearing, an elastic washer, an impact-bearing block, a suspension ring, and a lower bearing. The positioning components include a mounting platform and a pressure rod. A mounting platform is fixedly installed on the inner side of the upper part of the exciter outer cylinder. A pressure rod with its lower end abutting against the upper end of the screw motor is fixedly installed at the center of the lower end of the mounting platform. A hexagonal hole is provided at the center of the upper side of the mounting platform. At least two vertically penetrating first guide holes are provided at circumferential intervals on the upper side of the mounting platform corresponding to the outer position of the hexagonal hole. A clamping ring is provided on the inner side of the lower end of the wear-resistant sleeve. An upper bearing with its lower end seated on the upper side of the clamping ring is installed between the eccentric wheel and the wear-resistant sleeve. The lower outer side of the drill bit shaft corresponding to the position below the piston liner is limited and installed together with the exciter outer cylinder by the suspension ring. An elastic washer is provided between the exciter outer cylinder and the piston liner corresponding to the position between the counterweight and the wear-resistant sleeve. An impact-bearing block is provided between the exciter outer cylinder and the drill bit shaft corresponding to the position between the counterweight and the suspension ring. A lower bearing is provided between the lower end of the exciter outer cylinder and the drill bit shaft.

[0011] The above may also include a throttling nozzle, an external return hole on the outer side of the piston liner below the lower impact hole, a return ring groove on the outer side of the drill rod shaft below the lower water outlet hole, an internal return hole inclined in the return ring groove with the outer side higher than the inner side, and a throttling nozzle on the inner side of the drill rod shaft between the lower water outlet hole and the internal return hole.

[0012] An upper fan-shaped ring platform may be provided on the outside of the drill bit shaft corresponding to the position of the upper water outlet, and a lower fan-shaped ring platform may be provided on the outside of the drill bit shaft corresponding to the position of the lower water outlet.

[0013] The piston liner may be provided with at least one guide vertical platform at circumferential intervals on the outer side, and a guide vertical groove is provided on the inner side of the counterweight corresponding to the position of the guide vertical platform, with the guide vertical platform located in the guide vertical groove at the corresponding position.

[0014] At least two second guide holes may be provided at circumferential intervals on the upper outer side of the aforementioned eccentric wheel. The second guide holes are inclined holes with the outer side higher than the inner side.

[0015] This invention features a reasonable and compact structure, and is easy to use. The eccentric wheel, driven by a drive device, rotates, generating circumferential vibration. This rotation converts static friction into dynamic friction, causing circumferential vibration of the drill bit shaft. This vibration then drives the drill bit to generate circumferential impact. Periodic alignment of the upper water outlet and upper impact hole allows high-pressure drilling fluid to enter, achieving axial downward impact of the hammer. Similarly, periodic alignment of the lower water outlet and lower impact hole achieves axial upward impact of the hammer. By using the hammer and eccentric wheel to achieve axial and circumferential impacts respectively, this invention completes multi-dimensional impact and assists the drill bit in rock breaking, exhibiting stability, reliability, and excellent impact performance. Attached Figure Description

[0016] Appendix Figure 1 These are schematic diagrams of the main cross-sectional structure of embodiments 1 to 7 of the present invention.

[0017] Appendix Figure 2 For the appendix Figure 1 Enlarged schematic diagram of the upper half of the front view sectional structure.

[0018] Appendix Figure 3 For the appendix Figure 1 Enlarged structural diagram of the lower half of the front view section.

[0019] Appendix Figure 4 For the appendix Figure 1 A three-dimensional structural diagram of the piston liner.

[0020] Appendix Figure 5 For the appendix Figure 1 A three-dimensional structural diagram of the central counterweight.

[0021] Appendix Figure 6 For the appendix Figure 1 A three-dimensional structural diagram of the drill bit shaft.

[0022] Appendix Figure 7 For the appendix Figure 1 A top-view enlarged cross-sectional schematic diagram of the eccentric wheel.

[0023] The codes in the attached diagram are as follows: 1 is the drill bit shaft, 2 is the piston liner, 3 is the counterweight, 4 is the vibrator outer cylinder, 5 is the central channel, 6 is the upper water outlet, 7 is the lower water outlet, 8 is the upper impact hole, 9 is the lower impact hole, 10 is the upper high-pressure impact ring groove, 11 is the lower high-pressure impact ring groove, 12 is the throttling nozzle, 13 is the elastic washer, 14 is the impact bearing block, 15 is the suspension ring, 16 is the upper bearing, 17 is the lower bearing, 18 is the wear-resistant sleeve, 19 is the upper fan-shaped changing platform, 20 is the guide vertical platform, 21 is the guide vertical groove, 22 is the outer return hole, 23 is the inner return hole, 24 is the stator, 25 is the rotor, 26 is the screw motor, 27 is the eccentric wheel, 28 is the first guide hole, 29 is the second guide hole, 30 is the guide cavity, 31 is the mounting platform, 32 is the pressure rod, and 33 is the hexagonal hole. Detailed Implementation

[0024] The present invention is not limited to the following embodiments, and the specific implementation can be determined according to the technical solution of the present invention and the actual situation.

[0025] In this invention, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as front, back, top, bottom, left, right, etc. The positional relationships are determined based on the layout direction of the attached diagram in the instruction manual.

[0026] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0027] Example 1: As shown in the attached document Figure 1 , 2As shown in Figures 3, 4, 5, 6, and 7, the multi-directional rock-breaking vibration device includes an exciter outer cylinder 4, a drive device, an eccentric wheel 27, a drill bit shaft 1, a piston liner 2, and a counterweight 3. The drive device, eccentric wheel 27, and drill bit shaft 1 are sequentially and sequentially mounted from top to bottom inside the exciter outer cylinder 4. The output end of the drive device is connected to the upper end of the eccentric wheel 27, and the lower end of the eccentric wheel 27 is connected to the upper end of the drill bit shaft 1. The lower end of the drill bit shaft 1 is located below the exciter outer cylinder 4. A central channel 5 is provided in the middle of the drill bit shaft 1, running vertically through it. Two upper water outlet holes 6 are provided at intervals at the front and back of the drill bit shaft 1. Two lower water outlet holes 7 are provided at intervals on the left and right sides of the lower part of the drill bit shaft 1. A piston liner 2 with its lower end above the lower water outlet hole 7 is provided on the outer side of the drill bit shaft 1 corresponding to the position of the upper water outlet hole 6. An upper impact hole 8 is provided on the outer side of the upper part of the piston liner 2 corresponding to the position of the upper water outlet hole 6. A lower impact hole 9 is provided on the outer side of the lower part of the piston liner 2. A counterweight 3 is provided on the outer side of the middle part of the piston liner 2. An upper high-pressure impact ring groove 10 is provided on the inner side of the upper end of the counterweight 3. A lower high-pressure impact ring groove 11 is provided on the inner side of the lower end of the counterweight 3. During operation, the eccentric wheel 27 rotates via the drive device, generating circumferential vibration. This rotation converts static friction into dynamic friction, causing circumferential vibration of the drill bit shaft 1. This vibration then drives the drill bit to generate a circumferential impact. Periodic alignment of the upper water outlet 6 and upper impact hole 8 allows high-pressure drilling fluid to enter the upper high-pressure impact ring groove 10, achieving axial downward impact of the hammer 3. Similarly, periodic alignment of the lower water outlet 7 and lower impact hole 9 allows high-pressure drilling fluid to enter the lower high-pressure impact ring groove 11, achieving axial upward impact of the hammer 3. The impact is achieved through the hammer 3 and the eccentric wheel 27, which realize axial and circumferential impacts respectively, completing multi-dimensional impact and assisting the drill bit in rock breaking. By setting the upper high-pressure impact annular groove 10, the high-pressure drilling fluid forms a high-pressure chamber after entering the upper high-pressure impact annular groove 10, thereby pushing the hammer 3 to move downward. By setting the lower high-pressure impact annular groove 11, the high-pressure drilling fluid forms a high-pressure chamber after entering the lower high-pressure impact annular groove 11, thereby pushing the hammer 3 to move upward. In addition, the present invention has no pulse pressure fluctuations during operation and does not have a negative impact on the surface pump.

[0028] The above-mentioned multi-directional rock-breaking vibration device can be further optimized and / or improved according to actual needs:

[0029] Example 2: As shown in the attached document Figure 1 , 2As shown in Figures 3, 4, 5, 6, and 7, the device also includes a positioning component and a wear-resistant sleeve 18. The drive device includes a stator 24, a rotor 25, and a screw motor 26. A positioning component is fixedly installed on the inner side of the upper part of the exciter outer cylinder 4. A wear-resistant sleeve 18 is provided on the inner side of the middle part of the exciter outer cylinder 4. A screw motor 26, a rotor 25, and an eccentric wheel 27 are installed between the positioning component and the wear-resistant sleeve 18. The upper end of the screw motor 26 abuts against the positioning component. The lower end of the screw motor 26 is provided with a rotor 25. An eccentric wheel 27 is fixedly installed inside the rotor 25. The lower end of the eccentric wheel 27 abuts against the wear-resistant sleeve 18. The upper end of the drill bit rod is connected to the inner side of the lower end of the eccentric wheel 27 through a spline drive. A stator 24 is provided on the outer side of the screw motor 26. The positioning component is provided with at least one first guide hole 28 that runs vertically through the shaft. The eccentric wheel 27 is provided with a guide cavity 30 that opens downwards. The upper outer side of the eccentric wheel 27 is provided with at least one second guide hole 29 that can communicate with the guide cavity 30. During use, drilling fluid enters the screw motor 26 inside the vibrator outer cylinder 4 through the first guide hole 28 of the positioning component. The pressure medium drives the rotor 25 and eccentric wheel 27 inside the screw motor 26 to rotate. Due to the eccentric structure of the eccentric wheel 27, the rotor 25 rotates and drives the eccentric wheel 27 to rotate, generating circumferential vibration. During the rotation of the eccentric wheel 27, static friction is converted into dynamic friction, causing the drill bit shaft 1 to generate circumferential vibration. The vibration of the drill bit shaft 1 causes the drill bit to generate circumferential impact, thereby effectively improving the impact effect of the present invention. By setting the first guide hole 28 on the positioning component, the rotation speed of the rotor 25 can be increased by increasing the drilling fluid flow rate, thereby increasing the rotation speed and amplitude of the eccentric wheel 27. The radial amplitude can be adjusted by adjusting the eccentricity of the eccentric wheel 27.

[0030] Example 3: As shown in the attached document Figure 1 , 2As shown in Figures 3, 4, 5, 6, and 7, it also includes an upper bearing 16, an elastic washer 13, an impact bearing block 14, a suspension ring 15, and a lower bearing 17. The positioning components include a mounting platform 31 and a pressing rod 32. The mounting platform 31 is fixedly installed on the inner side of the upper part of the exciter outer cylinder 4. A pressing rod 32 with its lower end abutting against the upper end of the screw motor 26 is fixedly installed at the center of the lower end of the mounting platform 31. A hexagonal hole 33 is provided at the center of the upper side of the mounting platform 31. At least two vertically penetrating first guide holes 28 are provided at intervals along the circumference on the upper side of the mounting platform 31 corresponding to the outer position of the hexagonal hole 33. Wear-resistant sleeve 1 A clamping ring is provided on the inner side of the lower end of the 8. An upper bearing 16 with its lower end seated on the upper side of the clamping ring is installed between the eccentric wheel 27 and the wear-resistant sleeve 18. The lower outer side of the drill shaft 1, corresponding to the position below the piston liner 2, is limited and installed together with the vibrator outer cylinder 4 through the suspension ring 15. An elastic washer 13 is provided between the vibrator outer cylinder 4 and the piston liner 2, corresponding to the position between the counterweight 3 and the wear-resistant sleeve 18. An impact bearing block 14 is provided between the vibrator outer cylinder 4 and the drill shaft 1, corresponding to the position between the counterweight 3 and the suspension ring 15. A lower bearing 17 is provided between the lower end of the vibrator outer cylinder 4 and the drill shaft 1. During use, by setting the upper bearing 16, the supporting force is provided while reducing the friction of the eccentric wheel 27 rotation; by setting the hexagonal hole 33, the positioning component is conveniently installed, and the screw motor 26 is axially limited; by setting the lower bearing 17, not only can the vibrator outer cylinder 4 be prevented from rotating with the drill bit shaft 1, reducing the friction of the drill bit shaft 1 during rotation, but it can also provide supporting force for the drill bit shaft 1 and prevent it from swaying radially during rotation.

[0031] Example 4: As shown in the appendix Figure 1 , 2 As shown in Figures 3, 4, 5, 6, and 7, the device also includes a throttling nozzle 12. An external return hole 22 is provided on the outer side of the lower part of the piston liner 2, corresponding to the position below the lower impact hole 9. A return annular groove is provided on the outer side of the drill rod shaft, corresponding to the position below the lower water outlet hole 7. An inner return hole 23, inclined in a high-low shape, is provided within the return annular groove. A throttling nozzle 12 is provided on the inner side of the drill rod shaft 1, corresponding to the position between the lower water outlet hole 7 and the inner return hole. During use, this configuration effectively enhances the impact effect of the invention.

[0032] Example 5: As shown in the attached document Figure 1 , 2 As shown in Figures 3, 4, 5, 6, and 7, an upper fan-shaped annular platform is provided on the outer side of the drill bit shaft 1 corresponding to the position of the upper water outlet hole 6, and a lower fan-shaped annular platform is provided on the outer side of the drill bit shaft 1 corresponding to the position of the lower water outlet hole 7. During use, this arrangement ensures sealing when the upper water outlet hole 6 is periodically aligned with the upper impact hole 8, and when the lower water outlet hole 7 is periodically aligned with the lower impact hole 9, preventing high-pressure drilling fluid loss and affecting the axial impact effect.

[0033] Example 6: As attached Figure 1 , 2As shown in Figures 3, 4, 5, 6, and 7, at least one guide vertical platform 20 is provided at intervals along the circumference on the outer side of the piston liner 2. A guide vertical groove 21 is provided on the inner side of the counterweight 3 corresponding to the position of the guide vertical platform 20, and the guide vertical platform 20 is located in the guide vertical groove 21 at the corresponding position. During use, the axial movement of the counterweight 3 is guided by the guide vertical platform 20.

[0034] Example 7: As attached Figure 1 , 2 As shown in Figures 3, 4, 5, 6, and 7, at least two second guide holes 29 are provided at circumferential intervals on the upper outer side of the eccentric wheel 27. The second guide holes 29 are inclined holes with the outer side higher than the inner side. During use, this arrangement facilitates the flow of liquid into the guide cavity 30 through the second guide holes 29.

[0035] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.

Claims

1. A multi-directional rock-breaking vibration device, characterized in that... The device includes an exciter outer cylinder, a drive unit, an eccentric wheel, a drill bit shaft, a piston liner, and a counterweight. The drive unit, eccentric wheel, and drill bit shaft are sequentially mounted from top to bottom inside the exciter outer cylinder. The output end of the drive unit is connected to the upper end of the eccentric wheel, and the lower end of the eccentric wheel is connected to the upper end of the drill bit shaft. The lower end of the drill bit shaft is located below the exciter outer cylinder. A central channel runs vertically through the middle of the drill bit shaft. Two upper water outlet holes are spaced apart at the front and rear of the upper part of the drill bit shaft, and two lower water outlet holes are spaced apart at the left and right of the lower part of the drill bit shaft. A piston liner with its lower end above the lower water outlet hole is located on the outer side of the drill bit shaft corresponding to the position of the upper water outlet hole. An upper impact hole is located on the outer side of the upper part of the piston liner corresponding to the position of the upper impact hole, and a lower impact hole is located on the outer side of the lower part of the piston liner corresponding to the position of the upper impact hole. A counterweight is located on the outer side of the middle part of the piston liner. The inner side is provided with an upper high-pressure impact ring groove, and the inner side of the lower end of the hammer is provided with a lower high-pressure impact ring groove; it also includes a positioning component and a wear-resistant sleeve. The driving device includes a stator, a rotor and a screw motor. The positioning component is fixedly installed on the inner side of the upper part of the outer cylinder of the vibrator. The wear-resistant sleeve is provided on the inner side of the middle part of the outer cylinder of the vibrator. The screw motor, rotor and eccentric wheel are limited and installed between the positioning component and the wear-resistant sleeve. The upper end of the screw motor abuts against the positioning component. The lower end of the screw motor is provided with a rotor. The eccentric wheel is fixedly installed inside the rotor. The lower end of the eccentric wheel abuts against the wear-resistant sleeve. The upper end of the drill rod is connected to the inner side of the lower end of the eccentric wheel through a spline drive. The stator is provided on the outer side of the screw motor; the positioning component is provided with at least one first guide hole that runs vertically through it. The eccentric wheel is provided with a guide cavity that opens downward. The upper outer side of the eccentric wheel is provided with at least one second guide hole that can communicate with the guide cavity.

2. The multi-directional rock-breaking vibration device according to claim 1, characterized in that... It also includes an upper bearing, an elastic washer, an impact-bearing block, a suspension ring, and a lower bearing. The positioning components include a mounting platform and a pressure rod. A mounting platform is fixedly installed on the inner side of the upper part of the vibrator outer cylinder. A pressure rod with its lower end abutting against the upper end of the screw motor is fixedly installed at the center of the lower end of the mounting platform. A hexagonal hole is provided at the center of the upper side of the mounting platform. At least two vertically penetrating first guide holes are provided at circumferential intervals on the upper side of the mounting platform corresponding to the outer position of the hexagonal hole. A clamping ring is provided on the inner side of the lower end of the wear-resistant sleeve. An upper bearing with its lower end seated on the upper side of the clamping ring is installed between the eccentric wheel and the wear-resistant sleeve. The lower outer side of the drill bit shaft corresponding to the position below the piston liner is fixedly installed together with the vibrator outer cylinder by the suspension ring. An elastic washer is provided between the vibrator outer cylinder and the piston liner corresponding to the position between the counterweight and the wear-resistant sleeve. An impact-bearing block is provided between the vibrator outer cylinder and the drill bit shaft corresponding to the position between the counterweight and the suspension ring. A lower bearing is provided between the lower end of the vibrator outer cylinder and the drill bit shaft.

3. The multi-directional rock-breaking vibration device according to claim 1 or 2, characterized in that... It also includes a throttling nozzle, an external return hole on the outer side of the piston liner below the lower impact hole, a return ring groove on the outer side of the drill rod shaft below the lower water outlet hole, an internal return hole inclined in the return ring groove with the outer side higher than the inner side, and a throttling nozzle on the inner side of the drill rod shaft between the lower water outlet hole and the internal return hole.

4. The multi-directional rock-breaking vibration device according to claim 1 or 2, characterized in that... An upper fan-shaped ring platform is provided on the outside of the drill bit shaft corresponding to the position of the upper water outlet, and a lower fan-shaped ring platform is provided on the outside of the drill bit shaft corresponding to the position of the lower water outlet.

5. The multi-directional rock-breaking vibration device according to claim 3, characterized in that... An upper fan-shaped ring platform is provided on the outside of the drill bit shaft corresponding to the position of the upper water outlet, and a lower fan-shaped ring platform is provided on the outside of the drill bit shaft corresponding to the position of the lower water outlet.

6. The multi-directional rock-breaking vibration device according to claim 1, 2, or 5, characterized in that... At least one guide vertical platform is provided at circumferential intervals on the outer side of the piston liner, and a guide vertical groove is provided on the inner side of the counterweight corresponding to the position of the guide vertical platform, with the guide vertical platform located in the guide vertical groove at the corresponding position.

7. The multi-directional rock-breaking vibration device according to claim 3, characterized in that... At least one guide vertical platform is provided at circumferential intervals on the outer side of the piston liner, and a guide vertical groove is provided on the inner side of the counterweight corresponding to the position of the guide vertical platform, with the guide vertical platform located in the guide vertical groove at the corresponding position.

8. The multi-directional rock-breaking vibration device according to claim 4, characterized in that... At least one guide vertical platform is provided at circumferential intervals on the outer side of the piston liner, and a guide vertical groove is provided on the inner side of the counterweight corresponding to the position of the guide vertical platform, with the guide vertical platform located in the guide vertical groove at the corresponding position.

9. The multi-directional rock-breaking vibration device according to claim 1, 2, 5, 7, or 8, characterized in that... At least two second guide holes are provided at circumferential intervals on the outer side of the upper part of the eccentric wheel. The second guide holes are inclined holes with the outer side higher than the inner side.

10. The multi-directional rock-breaking vibration device according to claim 3, characterized in that... At least two second guide holes are provided at circumferential intervals on the outer side of the upper part of the eccentric wheel. The second guide holes are inclined holes with the outer side higher than the inner side.

11. The multi-directional rock-breaking vibration device according to claim 4, characterized in that... At least two second guide holes are provided at circumferential intervals on the outer side of the upper part of the eccentric wheel. The second guide holes are inclined holes with the outer side higher than the inner side.

12. The multi-directional rock-breaking vibration device according to claim 6, characterized in that... At least two second guide holes are provided at circumferential intervals on the outer side of the upper part of the eccentric wheel. The second guide holes are inclined holes with the outer side higher than the inner side.

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