Laser-PDC (Polycrystalline Diamond Compact) single-tooth collaborative rock breaking device and test method

Abstract

The invention discloses a laser-PDC (Polycrystalline Diamond Compact) single-tooth collaborative rock breaking device and a test method, and belongs to the technical field of laser-PDC single-tooth rock breaking leading edges. The device specifically comprises a mounting seat and a vertical adjusting assembly, a rotating assembly is mounted on the vertical adjusting assembly, and a rock sample clamp is arranged on the rotating assembly; a clamp angle adjusting assembly is arranged on the installation base, an inner tight-supporting type single-tooth clamp is installed on the clamp angle adjusting assembly, and a cutting single tooth is fixed to the inner tight-supporting type single-tooth clamp. The cutting single tooth is used for cutting a rock sample clamped on the rock sample clamp; a lens adjusting assembly is arranged on a laser output light path of the laser assembly. According to the device, the rotating assembly drives the rock sample to rotate, laser emitted by the laser assembly radiates the rock sample after penetrating through the lens adjusting assembly, energy density points are formed, the rock surface causes generation of a rock temperature gradient, the rock generates thermal stress and even generates microcracks, and therefore the rock strength is weakened, and then the rock is cut and crushed through the PDC cutting teeth.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser-PDC single-tooth rock breaking, and particularly relates to a laser-PDC single-tooth cooperative rock breaking device and a test method. BACKGROUND

[0002] Among the remaining oil and gas resources in China, deep (ultra-deep) oil and gas resources are abundant. According to the results of the third national resource evaluation, the deep oil resource is 30.4 billion tons, accounting for 40% of the total oil resource; the deep natural gas resource is 29.12 trillion cubic meters, accounting for 60% of the total natural gas resource. Deep (ultra-deep) oil and gas will become a major replacement field for oil and gas exploration in China. However, the difficulty of drilling in deep (ultra-deep) oil and gas reservoirs in China is rare in the world: high strength, high abrasiveness, and inhomogeneity of bottom hole rock, which leads to short service life of the drill bit, slow drilling speed, and high drilling cost. In the process of rock breaking during drilling, a large drilling pressure and high torque are usually required for conventional mechanical drill bits to ensure a high mechanical drilling speed. However, the large drilling pressure and high torque not only increase the power of the drilling machine and the energy consumption, but also make the stress on the drill string more severe and the deformation more severe, greatly increasing the friction between the drill string and the well wall, further deteriorating the stress on the drill string and the drill bit, and dramatically increasing the safety risk of drilling. Even the downhole drilling tools may be damaged or fail prematurely, resulting in an increase in the number of accident handling and tripping, and a doubling of the production cost.

[0003] In recent years, laser technology has developed rapidly and provides a new way to solve the problem of rock breaking. Laser has great potential and feasibility in rock breaking operation due to its unique advantages such as high energy density, non-contact operation, and precise control. Laser can instantly heat the surface of the rock, generate thermal stress in the rock, and even directly melt and vaporize the rock, thereby greatly reducing the strength of the rock and creating favorable conditions for subsequent mechanical rock breaking. However, single laser rock breaking technology still has some limitations in practical application. The most prominent problem is that the cost of laser equipment is high, and the rock breaking efficiency of laser may have greater problems and deficiencies for large hard rocks. Therefore, it is a hot spot to combine laser technology with mechanical rock breaking technology to realize laser-mechanical cooperative rock breaking.

[0004] Laser-PDC composite rock breaking is a frontier technology for efficient rock breaking in drilling, which uses laser to irradiate the surface of the rock to cause the generation of temperature gradient and thermal stress in the rock, and even generate micro-cracks, thereby weakening the strength of the rock, and then breaking the rock through the scraping action of the PDC tooth.

[0005] After the laser acts on the rock, the strength of the rock will be softened, and the PDC tooth is easier to cut the rock. However, due to the action of the laser, the temperature of the rock will also increase sharply, and under the action of heat conduction, the temperature of the PDC cutting tooth will also rise. If the temperature is too high, it will not only cause a large internal stress in the PDC tooth, but also cause deformation and wear of the cutting tooth, reduce the performance of the PDC tooth in cutting and crushing rock, and even directly cause the failure of the PDC tooth. How to realize the laser weakening the strength of the rock without affecting the cutting performance of the PDC tooth, especially the laser-PDC single tooth cooperative rock breaking device and test method to carry out the laser-PDC single tooth composite cooperative rock breaking rule. In the existing laser-mechanical cooperative rock breaking technology, the laser emitted by the laser generator can only be focused on the surface of the rock sample through a single shaping lens. However, when different rock samples are tested, the focusing and orientation of the laser beam need to be adjusted, so the shaping lens needs to be replaced and the focal length needs to be adjusted. However, the existing laser-mechanical cooperative rock breaking device is inconvenient to adjust the shaping lens and has poor universality, and is not suitable for rock breaking tests of various rock samples. SUMMARY

[0006] In view of the problems in the prior art, the laser-PDC single tooth cooperative rock breaking device and test method provided by the present application solves the problem of inconvenient lens adjustment of the existing laser-mechanical cooperative rock breaking device.

[0007] In the first aspect, in order to achieve the above object, the technical scheme adopted by the present application is: A laser-PDC single tooth cooperative rock breaking device, comprising a mounting seat and a vertical adjusting assembly, a rotating assembly is installed on the vertical adjusting assembly, and a rock sample clamp is arranged on the rotating assembly; a clamp angle adjusting assembly is arranged on the mounting seat, an inner bracing type single tooth clamp is installed on the clamp angle adjusting assembly, and a cutting single tooth is fixed on the inner bracing type single tooth clamp; the cutting single tooth cuts the rock sample clamped on the rock sample clamp; a laser assembly is also installed on the mounting seat, and a lens adjusting assembly is arranged on the laser output light path of the laser assembly; and the laser emitted by the laser assembly radiates the rock sample after passing through the lens adjusting assembly.

[0008] In the present application, the rotating assembly drives the rock sample to rotate, and the laser emitted by the laser assembly radiates the rock sample after passing through the lens adjusting assembly to form an energy density point, and the rock sample expands due to heat absorption to cause cracking; at the same time, the cutting single tooth cuts the rock sample during the rotation of the rock sample; the lens adjusting assembly can replace different shaping lenses and adjust the focal length, so it has strong universality and is convenient to replace different rock samples for laser adjustment.

[0009] Further, the clamp angle adjusting assembly comprises a clamp angle adjusting base and a clamp angle adjusting platform; the clamp angle adjusting base is fixed on the mounting base; one side of the clamp angle adjusting base is in a circular arc structure, a dovetail-shaped sliding groove is formed on the surface of the circular arc structure, a dovetail-shaped sliding block is arranged on the side surface of the clamp angle adjusting platform, and the sliding block of the clamp angle adjusting platform is slidingly connected in the sliding groove of the clamp angle adjusting base; a worm is arranged in the clamp angle adjusting base, one end of the worm penetrates through the side wall of the clamp angle adjusting base and is connected with an adjusting nut; a turbine is arranged at the end of the sliding block of the clamp angle adjusting platform, and the turbine is threadedly connected with the worm; and the inner supporting type single-tooth clamp is arranged on the clamp angle adjusting platform.

[0010] In the scheme, the worm and the gear wheel are cooperatively driven, which has the advantages of large transmission ratio, compact structure, reverse self-locking, convenient operation and the like, and can accurately adjust the cutting angle of the single tooth; if smaller angle adjustment is required, the gear teeth of the worm and the gear wheel are required to have more teeth and smaller pitch, and the cooperation is required to be more precise.

[0011] Further, the inner supporting type single-tooth clamp comprises a clamp base, which is fixed on the clamp angle adjusting platform; a tapered hole is formed in the inner portion of the clamp base, a tapered supporting sleeve is arranged in the inner portion of the tapered hole, and the cutting single tooth is clamped in the middle of the tapered supporting sleeve; a guide groove disc is arranged at the top of the tapered supporting sleeve; a self-locking nut is threadedly connected to the outer side of the clamp base, and the top of the self-locking nut is provided with a flange ring for pressing the guide groove disc.

[0012] In the scheme, the self-locking nut is tightened to press the guide groove disc downward, so as to indirectly make the tapered supporting sleeve move in the radial direction, the tapered supporting sleeve is guided by the tapered hole in the inner portion of the clamp base and is tightened inward, so as to clamp the cutting single tooth, the self-locking is realized through the friction force, the loosening and vibration are prevented, and the installation is convenient.

[0013] Further, the lens adjusting assembly comprises a focal length adjusting base, which is mounted on the mounting base; an optical lens group is mounted on the focal length adjusting base; The optical lens group comprises a lens group shell, a lens fixing disc is arranged in the inner portion of the lens group shell, a rotating shaft is connected to the middle portion of the lens fixing disc, and the lens fixing disc is rotationally connected to the inner portion of the lens group shell through the rotating shaft; a plurality of annular arrayed shaping lenses are distributed around the lens fixing disc, and the laser emitted by the laser assembly passes through one of the shaping lenses; An intermittent switching mechanism is arranged on the lens group shell.

[0014] In the scheme, the intermittent switching mechanism drives the lens fixing disc and the rotating shaft to rotate, and then drives the shaping lens fixing disc to rotate, so that the laser emitted by the laser assembly passes through different shaping lenses, the switching of the shaping lenses is realized, and the switching is convenient and fast.

[0015] Further, the intermittent switching mechanism comprises a driving shaft, the driving shaft is arranged through the lens group shell; a rotating wheel is arranged on the driving shaft, and a guide groove is obliquely arranged on the rotating wheel; a rotating shaft is arranged around the rotating wheel, and a same number of rollers as the shaping lenses are arranged around the rotating shaft; when the driving shaft and the rotating wheel are rotated, the rotating wheel drives the rollers to pass through the guide groove one by one, and the rotating wheel drives the lens fixing disc to rotate.

[0016] In the scheme, the rotating wheel is rotated for one circle around the shaft, the lower rotating rollers move along the guide groove, the next roller is output to enter the guide groove, and the lens fixing disc is driven to rotate, so that the shaping lenses are switched.

[0017] Further, the focal length adjusting base comprises a sliding seat, the sliding seat is installed on the mounting seat; a lead screw is arranged on the sliding seat, and the end of the lead screw is connected with the driving motor through a shaft coupling; a sliding table is threadedly connected with the lead screw, and the lens group shell is fixedly connected to the top of the sliding table; two guide rails are further arranged on the two sides of the lead screw, and two limiting grooves at the bottom of the sliding table are slidably arranged on the two guide rails.

[0018] In the scheme, the driving motor drives the lead screw to rotate, the lead screw drives the sliding table to move along the guide rail through the thread action, and the optical lens group moves along with the sliding table, so that the distance between the shaping lens and the rock sample is adjusted, the focal length is adjusted, and the adjustment is convenient.

[0019] Further, one end of the driving shaft is connected with a rotating handle.

[0020] In the scheme, the rotating handle is used for inputting the rotating force to the driving shaft.

[0021] Further, the vertical adjusting assembly comprises a base, and the base is open at the top; an inclined surface table is arranged in the base, and one side of the inclined surface table is connected with an electric cylinder; a lifting table is arranged on the top of the base, and the side wall of the lifting table is slidably connected in the sliding groove in the inner wall of the base; an inclined surface structure corresponding to the inclined surface table is arranged at the bottom of the lifting table, the electric cylinder drives the inclined surface table to move, and the lifting table is lifted under the action of the inclined surface.

[0022] Further, the rotating assembly comprises a support frame, a main shaft is movably connected in the support frame, one end of the main shaft is drivingly connected with a rotating motor through a belt wheel, and the other end of the main shaft is connected with a rock sample clamp.

[0023] In a second aspect, based on the laser-PDC single-tooth cooperative rock breaking device provided in the first aspect, a laser-PDC single-tooth cooperative rock breaking test method is provided, and the method comprises the following steps: Step S1: clamping the rock sample on the rock sample clamp; Step S2: driving the inclined surface table to move by using the electric cylinder, driving the lifting table to lift by using the inclined surface table, and making the rock sample clamped on the rock sample clamp contact the cutting single tooth. Step S3: rotating the adjusting nut drives the worm to rotate, the worm drives the turbine to rotate, and then drives the inner supporting single-tooth clamp and the cutting single-tooth to adjust the angle; Step S4: rotating the rotating handle drives the driving shaft to rotate, the rotating wheel on the driving shaft drives the rollers around the rotating shaft to pass through the guide groove one by one, and drives the lens fixing disc to rotate to select a suitable shaping lens; Step S5: the driving motor drives the lead screw to rotate, the lead screw drives the sliding table to move through the thread action, and the focal length adjustment is realized; Step S6: the laser assembly emits laser, the laser radiates the rock sample after passing through the shaping lens, forms an energy density point, and the rock sample expands due to heat absorption to cause cracking; at the same time, the rotating motor drives the main shaft to rotate through the belt wheel, and then drives the rock sample to rotate, and the cutting single-tooth cuts the rock sample in rotation.

[0024] The beneficial effects of the present application are: In the laser-PDC single-tooth cooperative rock breaking device provided by the present application, the laser emitted by the laser assembly radiates the rock sample after passing through the lens adjusting assembly, forms an energy density point, and makes the rock produce thermal stress and even micro-cracks, so as to weaken the strength of the rock; at the same time, the rotating assembly drives the rock sample to rotate, and the cutting single-tooth cuts the rock sample in rotation. In the clamp angle adjusting assembly, the rotating adjusting nut drives the worm to rotate, and then drives the inner supporting single-tooth clamp and the cutting single-tooth to adjust the angle; the transmission is realized by the cooperation of the worm and the gear, has the advantages of large transmission ratio, compact structure, reverse self-locking, convenient operation and the like, and can accurately adjust the cutting angle of the single-tooth.

[0025] When different shaping lenses need to be replaced, the driving shaft and the rotating wheel are rotated, the upper guide groove of the rotating wheel rotates around the shaft for one revolution, the lower rotating roller moves along the guide groove to output the next roller into the guide groove, and then drives the shaping lens fixing disc to rotate, so that the laser emitted by the laser assembly passes through different shaping lenses, and the switching of the shaping lenses is realized. After the shaping lenses are switched, the driving motor drives the lead screw to rotate, the lead screw drives the sliding table to move along the guide rail through the thread action, at the same time, the shaping lens moves with the sliding table, the distance between the shaping lens and the rock sample is adjusted, and the focal length adjustment is realized. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structure schematic view of the laser-PDC single-tooth cooperative rock breaking device of the present application; Figure 2 It is an exploded view of the laser-PDC single-tooth cooperative rock breaking device of the present application; Figure 3 It is a structure schematic view of the clamp angle adjusting assembly, the inner supporting single-tooth clamp and the cutting single-tooth in the present application; Figure 4 It is a local sectional structure schematic view of the cutting single-tooth in the present application; Figure 5 Structure diagram of focal length adjusting base and optical lens group in the application; Figure 6 Structure diagram of internal structure of optical lens group in the application; Figure 7 Structure diagram of upward turning of lifting platform relative to base in the application.

[0027] Reference signs: 1, mounting seat; 2, vertical adjusting assembly; 21, base; 22, inclined table; 23, electric cylinder; 24, lifting platform; 3, rotating assembly; 31, support frame; 32, rotating motor; 4, rock sample clamp; 5, laser assembly; 6, lens adjusting assembly; 61, focal length adjusting base; 611, sliding seat; 612, lead screw; 613, driving motor; 614, sliding table; 615, guide rail; 62, optical lens group; 621, lens group shell; 622, rotating shaft; 623, lens fixing disc; 624, shaping lens; 625, driving shaft; 626, rotating wheel; 627, roller; 628, rotating handle; 7, clamp angle adjusting assembly; 71, clamp angle adjusting seat; 72, clamp angle adjusting table; 73, worm; 74, adjusting nut; 75, turbine; 8, inner supporting single-tooth clamp; 81, clamp base; 82, conical supporting sleeve; 83, guide groove disc; 84, self-locking nut; 9, cutting single-tooth; DETAILED DESCRIPTION The application will be further described below in conjunction with the drawings and specific embodiments. The specific embodiments of the application are described below to facilitate the understanding of the application by those skilled in the art, but it should be clear that the application is not limited to the scope of the specific embodiments. For those skilled in the art, it is obvious that various changes are within the spirit and scope of the application as defined in the appended claims, and all the applications utilizing the concept of the application are within the scope of protection.

[0028] Embodiment 1 As shown in Figure 1 and Figure 2 , the embodiment provides a laser-PDC single-tooth cooperative rock breaking device, which solves the problem of inconvenient lens adjustment of the existing laser-mechanical cooperative rock breaking device; and specifically includes: mounting seat 1, vertical adjusting assembly 2, rotating assembly 3, rock sample clamp 4, laser assembly 5, lens adjusting assembly 6, clamp angle adjusting assembly 7 and inner supporting single-tooth clamp 8. The vertical adjusting assembly 2 is provided with a rotating assembly 3, and the rotating assembly 3 is provided with a rock sample clamp 4; the mounting seat 1 is provided with a clamp angle adjusting assembly 7, the clamp angle adjusting assembly 7 is provided with an inner supporting and tightening type single-tooth clamp 8, and the inner supporting and tightening type single-tooth clamp 8 is fixed with a cutting single tooth 9; the cutting single tooth 9 cuts the rock sample clamped on the rock sample clamp 4; the mounting seat 1 is also provided with a laser assembly 5, and the laser output light path of the laser assembly 5 is provided with a lens adjusting assembly 6; the laser emitted by the laser assembly 5 irradiates the rock sample after passing through the lens adjusting assembly 6.

[0029] As shown in Figure 3 , the clamp angle adjusting assembly 7 comprises a clamp angle adjusting seat 71 and a clamp angle adjusting platform 72; the clamp angle adjusting seat 71 is fixed on the mounting seat 1; one side of the clamp angle adjusting seat 71 is in a circular arc structure, a dovetail type sliding groove is formed on the surface of the circular arc structure, a dovetail type sliding block is arranged on the side surface of the clamp angle adjusting platform 72, and the sliding block of the clamp angle adjusting platform 72 is slidingly connected in the sliding groove of the clamp angle adjusting seat 71; a worm 73 is arranged in the clamp angle adjusting seat 71, one end of the worm 73 penetrates through the side wall of the clamp angle adjusting seat and is connected with an adjusting nut 74; a turbine 75 is arranged on the end of the sliding block of the clamp angle adjusting platform 72, and the turbine 75 is threadedly connected with the worm 73; the inner supporting and tightening type single-tooth clamp 8 is arranged on the clamp angle adjusting platform 72.

[0030] As shown in Figure 4 , the inner supporting and tightening type single-tooth clamp 8 comprises a clamp base 81, and the clamp base 81 is fixed on the clamp angle adjusting platform 72; a conical hole is formed in the inner portion of the clamp base 81, a conical supporting sleeve 82 is arranged in the inner portion of the conical hole, and the cutting single tooth 9 is clamped in the middle of the conical supporting sleeve 82; a guide groove disc 83 is arranged on the top of the conical supporting sleeve 82; a self-locking nut 84 is threadedly connected to the outer side of the clamp base 81, and a flange ring is arranged on the top of the self-locking nut 84 to press the guide groove disc 83. The self-locking nut 84 is tightened to press the guide groove disc 83 downward, so as to indirectly make the conical supporting sleeve 82 move in the radial direction, the conical supporting sleeve 82 is guided by the conical hole in the inner portion of the clamp base 81 and is tightened inward, so as to clamp the cutting single tooth 9, the self-locking is realized through the friction force, the loosening and vibration resistance can be realized, and the installation is convenient.

[0031] As shown in Figure 5 , the lens adjusting assembly 6 comprises a focal length adjusting base 61 and an optical lens group 62, and the focal length adjusting base 61 is mounted on the mounting seat 1; the optical lens group 62 is mounted on the focal length adjusting base 61.

[0032] As shown in Figure 5 and Figure 6As shown, the optical lens group 62 comprises a lens group shell 621, inside which is a lens fixing disc 623, the middle of which is connected with a rotating shaft 622, and the lens fixing disc 623 is rotationally connected inside the lens group shell 621 through the rotating shaft 622; a plurality of annular arrays of shaping lenses 624 are distributed around the lens fixing disc 623, and the laser emitted by the laser assembly 5 transmits through one of the shaping lenses 624. The lens group shell 621 is provided with an intermittent switching mechanism, which drives the lens fixing disc 623 and the rotating shaft 622 to rotate, thereby driving the lens fixing disc 623 to rotate, so that the laser emitted by the laser assembly 5 passes through different shaping lenses 624, realizing the switching of the shaping lenses 624, which is convenient and fast.

[0033] As shown in the figure, Figure 6 The intermittent switching mechanism comprises a driving shaft 625, which is arranged through the lens group shell 621; the driving shaft 625 is provided with a rotating wheel 626, and the rotating wheel 626 is obliquely provided with a guide groove; a plurality of rollers 627 are arranged around the rotating shaft 622, which are equal in number to the shaping lenses 624; when the driving shaft 625 and the rotating wheel 626 are rotated, the rotating wheel 626 drives the rollers 627 to pass through the guide groove one by one, driving the lens fixing disc 623 to rotate. When the driving shaft 625 and the rotating wheel 626 are rotated, the upper guide groove of the rotating wheel 626 rotates one circle around the shaft, and the lower rotating roller 627 moves along the guide groove to output the next roller 627 into the guide groove, thereby driving the lens fixing disc 623 to rotate, corresponding to the switching of the lens 624.

[0034] The focal length adjusting base 61 comprises a sliding seat 611 mounted on the mounting seat 1; the sliding seat 611 is provided with a lead screw 612, the end of which is connected with a driving motor 613 through a shaft coupling; the lead screw 612 is threadedly connected with a sliding table 614, and the lens group shell 621 is fixedly connected to the top of the sliding table 614; two guide rails 615 are further arranged on both sides of the lead screw 612, and two limiting grooves at the bottom of the sliding table 614 are respectively arranged on the two guide rails 615. The driving motor 613 drives the lead screw 612 to rotate, which drives the sliding table 614 to move along the guide rail 615 through the thread action, and at the same time, the optical lens group 62 moves with the sliding table 614, adjusting the distance between the shaping lens 624 and the rock sample, realizing focal length adjustment, which is convenient to adjust.

[0035] One end of the driving shaft 625 is connected with a rotating handle 628, which is used to input a rotating force to the driving shaft 625.

[0036] As shown in the figure, Figure 7As shown, the vertical adjusting assembly 2 comprises a base 21, which is open at the top; a bevel table 22 is arranged inside the base 21, and one side of the bevel table 22 is connected with an electric cylinder 23; a lifting table 24 is arranged at the top of the base 21, and the side wall of the lifting table 24 is slidingly connected in a sliding groove in the inner wall of the base 21; the bottom of the lifting table 24 is provided with a bevel structure corresponding to the bevel table 22, and the electric cylinder 23 drives the bevel table 22 to move, and the lifting table 24 is lifted under the action of the bevel.

[0037] The rotating assembly 3 comprises a support frame 31, and a main shaft is movably connected in the support frame 31, one end of the main shaft is drivingly connected with a rotating motor 32 through a belt wheel, and the other end of the main shaft is connected with the rock sample clamp 4.

[0038] Embodiment 2 Based on the laser-PDC single-tooth cooperative rock breaking device provided in Embodiment 1, the present embodiment provides a laser-PDC single-tooth cooperative rock breaking test method, which comprises the following steps: Step S1: clamp the rock sample on the rock sample clamp 4; Step S2: drive the bevel table 22 to move by the electric cylinder 23, and drive the lifting table 24 to lift by the bevel table 22 through the action of the bevel, so that the rock sample clamped on the rock sample clamp 4 contacts the cutting single tooth 9; Step S3: rotate the adjusting nut 74 to drive the worm 73 to rotate, and then drive the turbine 75 to rotate, and further drive the inner supporting single-tooth clamp 8 and the cutting single tooth 9 to adjust the angle; Step S4: rotate the rotating handle 628 to drive the driving shaft 625 to rotate, and the rotating wheel 626 on the driving shaft 625 drives the rollers 627 around the rotating shaft 622 to pass through the guide grooves one by one, and drives the lens fixing disc 623 to rotate, so as to select the appropriate shaping lens 624; Step S5: drive the lead screw 612 to rotate by the driving motor 613, and drive the sliding table 614 to move by the thread action of the lead screw 612, so as to realize the focal length adjustment; Step S6: the laser assembly 5 emits laser, and the laser radiates the rock sample after passing through the shaping lens 624, forming an energy density point, and the rock sample expands due to heat absorption, resulting in cracking; at the same time, the rotating motor 32 drives the main shaft to rotate through the belt wheel, and then drives the rock sample to rotate, and the cutting single tooth 9 cuts the rock sample in rotation.

[0039] Those skilled in the art will appreciate that the embodiments herein are to help the reader understand the principles of the present application and should be understood as the protection scope of the present application is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations according to the technical inspirations disclosed in the present application without departing from the essence of the present application, and these modifications and combinations are still within the protection scope of the present application.

Claims

1. A laser-PDC single-tooth synergistic rock-breaking device, characterized in that: The device includes a mounting base (1) and a vertical adjustment assembly (2). A rotating assembly (3) is mounted on the vertical adjustment assembly (2), and a rock sample clamp (4) is mounted on the rotating assembly (3). A clamp angle adjustment assembly (7) is mounted on the mounting base (1), and an internally tightened single-tooth clamp (8) is mounted on the clamp angle adjustment assembly (7). A cutting single tooth (9) is fixed on the internally tightened single-tooth clamp (8). The cutting single tooth (9) cuts the rock sample held on the rock sample clamp (4). A laser assembly (5) is also mounted on the mounting base (1). A lens adjustment assembly (6) is provided on the laser output path of the laser assembly (5). The laser emitted by the laser assembly (5) radiates the rock sample after passing through the lens adjustment assembly (6).

2. The laser-PDC single-tooth synergistic rock-breaking device according to claim 1, characterized in that: The clamp angle adjustment assembly (7) includes a clamp angle adjustment seat (71) and a clamp angle adjustment platform (72); the clamp angle adjustment seat (71) is fixed on the mounting base (1); one side of the clamp angle adjustment seat (71) has an arc-shaped structure, and a dovetail-shaped groove is provided on the arc-shaped structure surface; the side of the clamp angle adjustment platform (72) is provided with a dovetail-shaped slider, and the slider of the clamp angle adjustment platform (72) is slidably connected in the groove of the clamp angle adjustment seat (71); a worm (73) is provided inside the clamp angle adjustment seat (71), one end of the worm (73) passes through the side wall of the clamp angle adjustment seat (71) and is connected to the adjusting nut (74); a turbine (75) is provided at the end of the slider of the clamp angle adjustment platform (72), and the turbine (75) is threadedly connected to the worm (73); the internally supporting single-tooth clamp (8) is provided on the clamp angle adjustment platform (72).

3. The laser-PDC single-tooth synergistic rock-breaking device according to claim 2, characterized in that: The internally tightened single-tooth clamp (8) includes a clamp base (81), which is fixed on the clamp angle adjustment table (72). The clamp base (81) has a conical hole inside, and a conical support sleeve (82) is provided inside the conical hole. The cutting single tooth (9) is clamped in the middle of the conical support sleeve (82). A guide groove disc (83) is provided on the top of the conical support sleeve (82). A self-locking nut (84) is threaded on the outside of the clamp base (81), and the top of the self-locking nut (84) has a flange ring to press against the guide groove disc (83).

4. The laser-PDC single-tooth synergistic rock-breaking device according to claim 1, characterized in that: The lens adjustment assembly (6) includes a focal length adjustment base (61), which is mounted on the mounting base (1); an optical lens group (62) is mounted on the focal length adjustment base (61). The optical lens assembly (62) includes a lens assembly housing (621), inside which is a lens fixing plate (623). A rotating shaft (622) is connected to the middle of the lens fixing plate (623), and the lens fixing plate (623) is rotatably connected to the inside of the lens assembly housing (621) through the rotating shaft (622). A plurality of ring array shaping lenses (624) are distributed around the lens fixing plate (623), and the laser emitted by the laser assembly (5) passes through one of the shaping lenses (624). An intermittent switching mechanism is provided on the outer shell (621) of the lens assembly.

5. The laser-PDC single-tooth synergistic rock-breaking device according to claim 4, characterized in that: The intermittent switching mechanism includes a drive shaft (625) that passes through the lens housing (621); a rotating wheel (626) is provided on the drive shaft (625), and a guide groove is obliquely opened on the rotating wheel (626); the rotating shaft (622) is surrounded by a number of rollers (627) equal to the number of the shaping lens (624); when the drive shaft (625) and the rotating wheel (626) are rotated, the rotating wheel (626) drives the rollers (627) to pass through the guide groove one by one, thereby driving the lens fixing plate (623) to rotate.

6. The laser-PDC single-tooth synergistic rock-breaking device according to claim 4, characterized in that: The focal length adjustment base (61) includes a slide (611) which is mounted on the mounting base (1). A lead screw (612) is provided on the slide (611), and the end of the lead screw (612) is connected to the drive motor (613) through a coupling. A slide table (614) is threaded onto the lead screw (612), and the lens housing (621) is fixedly connected to the top of the slide table (614). Two guide rails (615) are also provided on both sides of the lead screw (612), and two limiting grooves at the bottom of the slide table (614) are slidably arranged on the two guide rails (615).

7. The laser-PDC single-tooth synergistic rock-breaking device according to claim 5, characterized in that: One end of the drive shaft (625) is connected to a rotary handle (628).

8. The laser-PDC single-tooth synergistic rock-breaking device according to claim 1, characterized in that: The vertical adjustment component (2) includes a base (21) with an opening at the top; an inclined platform (22) is provided inside the base (21), one side of which is connected to an electric cylinder (23); a lifting platform (24) is provided at the top of the base (21), and the side wall of the lifting platform (24) is slidably connected to a groove in the inner wall of the base (21); the bottom of the lifting platform (24) is provided with an inclined structure corresponding to the inclined platform (22), the electric cylinder (23) drives the inclined platform (22) to move, and the lifting platform (24) rises and falls under the action of the inclined surface.

9. The laser-PDC single-tooth synergistic rock-breaking device according to claim 8, characterized in that: The rotating component (3) includes a support frame (31), in which a main shaft is movably connected. One end of the main shaft is connected to a rotary motor (32) via a pulley, and the other end of the main shaft is connected to a rock sample clamp (4).

10. A test method for the laser-PDC single-tooth synergistic rock-breaking device according to any one of claims 1 to 9, characterized in that, Includes the following steps: Step S1: Clamp the rock sample onto the rock sample holder (4); Step S2: Use an electric cylinder (23) to drive the inclined table (22) to move. The inclined table (22) drives the lifting table (24) to rise and fall through the inclined plane, so that the rock sample held on the rock sample clamp (4) comes into contact with the cutting tooth (9). Step S3: Rotate the adjusting nut (74) to drive the worm (73) to rotate, and the worm (73) drives the turbine (75) to rotate, thereby driving the internal support type single tooth clamp (8) and the cutting single tooth (9) to adjust the angle; Step S4: Rotate the rotating handle (628) to drive the drive shaft (625) to rotate. The wheel (626) on the drive shaft (625) drives the rollers (627) around the rotating shaft (622) to pass through the guide groove one by one, thereby driving the lens fixing plate (623) to rotate, so as to select a suitable shaping lens (624). Step S5: The drive motor (613) drives the lead screw (612) to rotate, and the lead screw (612) drives the slide (614) to move through the thread action to realize the focus adjustment; Step S6: The laser component (5) emits a laser. After the laser passes through the shaping lens (624), it radiates the rock sample to form an energy density point. The rock sample absorbs heat and expands, causing cracks. At the same time, the rotary motor (32) drives the main shaft to rotate through the pulley, thereby driving the rock sample to rotate. During the rotation, the cutting single tooth (9) cuts the rock sample.

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