Single-tooth linear and rotary scraping rock breaking test device suitable for PDC (Polycrystalline Diamond Compact)

Abstract

The invention discloses a testing device suitable for PDC single-tooth linear and rotary scraping rock breaking. The testing device comprises a rock moving device, a bit pressure and depth supply device, a tooth rotating device and a tooth linear moving device. The bit pressure and depth supply device is mounted on the rock moving device and is used for providing bit pressure or depth required by a test for the PDC teeth; the rock moving device is used for driving the bit pressure and depth feeding device to move in the horizontal direction; the tooth rotating device is arranged above the bit pressure and depth supply device, and a PDC tooth clamp is arranged at the bottom of the tooth rotating device; the tooth linear moving device is used for driving the tooth rotating device to move in the horizontal direction, and the tooth rotating device is used for driving the PDC teeth to rotate in the horizontal direction. According to the test device, a linear scraping rock breaking mode and a rotary scraping rock breaking mode are combined, a single-tooth linear scraping rock breaking test can be carried out, a single-tooth or multi-tooth rotary scraping rock breaking test can also be carried out, and the test precision can also be ensured while the underground rotary rock breaking process is really simulated.

Description

Technical Field

[0001] The invention relates to the technical field of simulated drilling test for oil and gas development, and in particular to a rock-breaking test device suitable for a PDC single-tooth linear and rotary scraping cut. Background Art

[0002] With the rapid development of economy, the country's demand for oil and gas resources is becoming increasingly severe, and oil and gas exploitation is gradually extending to deep or ultra-deep formations. According to research, the deeper the drilling depth, the more complex the drilling environment, and the higher the requirements for drilling tools. However, PDC drill bits, as an important drilling tool at present, are gradually developing in a personalized direction in the face of complex drilling environments.

[0003] When designing a PDC drill bit individually, it is necessary to determine the tooth arrangement parameters through a single-tooth rock-breaking test. Since the accuracy of the test device test is an important way to ensure the rock-breaking effect of the PDC drill bit, ensuring the accuracy of the test device test is a difficulty that urgently needs to be solved.

[0004] The current PDC tooth rock breaking test devices are mainly divided into linear scraping and rotary scraping. Since simple linear scraping cannot completely simulate the actual rotary rock breaking process underground, and simple rotary scraping cannot ensure that the rock is in a horizontal state during the test, the obtained parameters fluctuate too much, thus affecting the data accuracy. Therefore, simple linear scraping and rotary scraping cannot accurately test the drilling parameters.

[0005] In view of this, this application is hereby filed. Summary of the invention

[0006] The problem with the prior art is that the current linear scraping and rock breaking test device cannot truly simulate the underground rotary scraping and rock breaking process, and the rotary scraping and rock breaking test device cannot plane the rock surface before the test, resulting in low accuracy. The purpose of the present invention is to provide a linear and rotary scraping and rock breaking test device suitable for PDC single-tooth, which combines the linear scraping and rock breaking method with the rotary scraping and rock breaking method, and can not only perform single-tooth linear scraping and rock breaking tests, but also single-tooth or multi-tooth rotary scraping and rock breaking tests. While truly simulating the underground rotary rock breaking process, it can also ensure the test accuracy, thereby providing a test basis for the design of efficient rock breaking drill bits.

[0007] The present invention is achieved through the following technical solutions:

[0008] A test device for PDC single-tooth linear and rotary scraping and rock breaking, comprising a rock moving device, a drilling pressure and depth supply device, a tooth rotating device and a tooth linear moving device;

[0009] The drilling pressure and depth supply device is installed on the rock moving device, and is used to provide the PDC teeth with the drilling pressure or depth required for the test;

[0010] The rock moving device is used to drive the drilling pressure and depth supply device to move in the horizontal direction;

[0011] The tooth rotating device is arranged above the drilling pressure and depth supply device, the tooth rotating device is vertically connected to the horizontally arranged tooth linear moving device, and a PDC tooth clamp is arranged at the bottom of the tooth rotating device;

[0012] The tooth linear moving device is used to drive the tooth rotating device to perform linear movement along a horizontal direction perpendicular to the moving direction of the drilling pressure and depth supply device, and the tooth rotating device is used to drive the PDC tooth to perform rotational movement in the horizontal direction.

[0013] The test device of the present invention combines the linear scraping and rock breaking method with the rotary scraping and rock breaking method. It can not only carry out single-tooth linear scraping and rock breaking tests, but also carry out single-tooth or multi-tooth rotary scraping and rock breaking tests. While truly simulating the underground rotary rock breaking process, it can also ensure the test accuracy, providing a test basis for the design of efficient rock breaking drill bits.

[0014] Furthermore, it also includes a workbench and a computer. The rock moving device and the tooth linear moving device are installed on the workbench surface by bolts. The computer is connected to the rock moving device, the drilling pressure and depth supply device, the tooth rotating device, and the tooth linear moving device respectively through rubber cables.

[0015] Furthermore, the rock moving device includes a horizontal guide rail, a mobile carrier is installed on the guide rail, a reducer 1 and a motor 1 are fixedly connected to the mobile carrier by bolts, the reducer 1 and the motor 1 are connected by a coupling, a gear is installed at the lower part of the reducer, a rack is installed on the inner side wall of the guide rail, a gear meshing with the rack is installed on the bottom surface of the mobile carrier, the gear is connected to the motor 1 through the reducer 1, the motor 1 drives the gear to rotate so that the gear moves horizontally along the rack, thereby driving the mobile carrier to move in the horizontal direction, and guide rail baffles are installed at both ends of the guide rail by bolts.

[0016] Furthermore, the drilling pressure and depth supply device is installed on a mobile carrier, including a hydraulic device, a rock clamp and a rock. The hydraulic device is connected to the rock clamp by bolts, and the rock is fixed on the rock clamp. The hydraulic device can drive the rock to move upward to provide the PDC teeth with the drilling pressure or depth required for the test.

[0017] Furthermore, the rock clamp includes a clamp body, an elastic gasket, a moving block, a wrench, a bearing 1 and a fixed block, a plurality of elastic gaskets are arranged on the inner side of the clamp body, a moving block is arranged between the elastic gasket and the clamp body, the moving block is installed on the fixed block, the fixed block is arranged in a slide groove on the surface of the clamp body, the wrench passes through the clamp body and the moving block and is threadedly connected with the moving block, and the fixed block, the moving block and the elastic gasket can be pushed to move in the direction opposite to the elastic gasket by rotating the wrench to clamp the rock, wherein the fixed block is limited by the slide groove to prevent the moving block from shaking up and down during the movement; the bearing 1 is arranged at the connection between the wrench and the clamp body, and is used to support the wrench; wherein the wrench and the bearing 1 are interference fit inside, and are clearance fit with the clamp body.

[0018] Furthermore, the tooth rotation device includes a second motor, a second reducer, a sensor and a parameter adjustment device connected in sequence from top to bottom, and the parameter adjustment device includes a pitch adjustment component and a caster angle adjustment component. The pitch adjustment component is provided with an adjustment mounting strip hole, the upper end of the caster angle adjustment component is connected to the adjustment mounting strip hole by bolts, and the lower end is connected to the PDC tooth clamp.

[0019] Further, the caster angle adjustment component includes an initial caster angle adjustment component, a caster angle increase adjustment component and a caster angle decrease adjustment component.

[0020] Furthermore, the tooth linear moving device includes a screw and a motor three, the front end of the screw is connected to the tooth rotating device, and the motor three drives the screw to drive the tooth rotating device to move horizontally.

[0021] Furthermore, the screw rod includes a screw rod, a second bearing, a screw rod housing and an extension rod. The screw rod housing has openings at both ends, the extension rod is sleeved in the screw rod housing, one end of the extension rod is connected to the screw rod with an internal thread, the end of the screw rod extends out of the end of the screw rod housing and is connected to the motor three, and the other end of the extension rod extends out of the end of the screw rod housing and is connected to the gear rotation device; wherein the screw in the screw rod and the inside of the second bearing are interference fit, the outside of the second bearing and the inside of the screw rod housing are interference fit, and the inside of the screw rod housing and the surface of the extension rod are clearance fit.

[0022] When the present invention performs a PDC single-tooth linear scraping and rock-breaking test, the computer controls the tooth rotating device to remain fixed, and linear scraping is performed only by the tooth linear moving device. During this process, the rock-breaking scraping trajectory is changed by the rock moving device, and the drilling pressure or depth required for the test is provided by the drilling pressure and depth supply device;

[0023] When conducting the PDC tooth rotary scraping and rock breaking test, the computer controls the tooth linear moving device and the rock moving device to be fixed at a suitable position, so that the tooth rotating device stays just above the rock, and the rotary scraping and rock breaking test is carried out. During this process, the drilling pressure or depth required for the test is provided by the drilling pressure and depth supply device;

[0024] Since the present invention has a tooth linear moving device, the rock surface can be planed by single-tooth linear scraping before rotary scraping and rock breaking, thereby ensuring the accuracy of the test. A plurality of PDC teeth combined rotary scraping and rock breaking test can also be carried out according to test requirements. It is only necessary to install a plurality of rear inclination angle adjustment components side by side on the pitch adjustment component to carry out a plurality of PDC teeth combined rotary scraping and rock breaking test.

[0025] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0026] 1. The present invention proposes a single-tooth linear and rotary scraping rock breaking test device suitable for PDC, which combines the linear scraping rock breaking mode with the rotary scraping rock breaking mode, and can not only perform single-tooth linear scraping rock breaking tests, but also perform single-tooth or multi-tooth rotary scraping rock breaking tests, more realistically simulating the underground rotary rock breaking process and ensuring the test accuracy;

[0027] 2. An embodiment of the present invention provides a PDC single-tooth linear and rotary scraping rock breaking test device. Compared with the existing single-tooth rotary scraping rock breaking test device, the present invention can plane the rock surface by single-tooth linear scraping before rotary scraping rock breaking, thereby ensuring the accuracy of the test;

[0028] 3. The embodiment of the present invention provides a PDC single-tooth linear and rotary scraping and rock breaking test device, which can also perform multiple PDC teeth combined rotary scraping and rock breaking tests according to test requirements;

[0029] 4. An embodiment of the present invention provides a PDC single-tooth linear and rotary scraping and rock breaking test device, which is configured with different rake angle adjustment components and connected with bolts. Therefore, the rake angle, tooth side angle, and distance from the tooth to the drill bit centerline can be adjusted by manually controlling the bolts, thereby ensuring the accuracy of the test parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the structure of a test device provided in an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the structure of a rock moving device provided in an embodiment of the present invention;

[0033] Figure 3 A schematic diagram of the structure of a drilling pressure and depth supply device provided in an embodiment of the present invention;

[0034] Figure 4 A schematic diagram of the structure of a gear rotating device provided in an embodiment of the present invention;

[0035] Figure 5 A schematic diagram of the structure of a gear linear moving device provided in an embodiment of the present invention;

[0036] Figure 6 A schematic diagram of the main structure of a rock clamp provided by an embodiment of the present invention;

[0037] Figure 7 A schematic diagram of the structure of a parameter adjustment device provided in an embodiment of the present invention;

[0038] Figure 8 A schematic diagram of the structure of a caster angle adjustment component provided in an embodiment of the present invention;

[0039] Fig. 9 A schematic structural diagram of a screw rod device provided in an embodiment of the present invention.

[0040] Reference numerals and corresponding parts names:

[0041] 1- rock moving device, 2- drilling pressure and depth supply device, 3- tooth rotating device, 4- tooth linear moving device, 5- workbench, 6- computer, 7- gear, 8- reducer 1, 9- motor 1, 10- moving carrier, 11- rack, 12- guide rail, 13- guide rail baffle, 14- hydraulic device, 15- rock clamp, 16- rock, 17- reducer 2, 18- motor 2, 19- sensor, 20- parameter adjustment device, 21 -screw, 22-motor three, 23-clamp body, 24-elastic gasket, 25-moving block, 26-wrench, 27-bearing one, 28-fixed block, 29-pitch adjustment component, 30-castor angle adjustment component, 31-PDC tooth clamp, 32-initial castor angle adjustment component, 33-castor angle increase adjustment component, 34-castor angle reduction adjustment component, 35-screw, 36-bearing two, 37-screw housing, 38-extending rod. DETAILED DESCRIPTION

[0042] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0043] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to one of ordinary skill in the art that these specific details are not necessarily employed to practice the present invention. In other embodiments, in order to avoid obscuring the present invention, well-known structures, circuits, or methods are not specifically described.

[0044] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] In the description of the present invention, the directions or positional relationships indicated by terms such as “front”, “rear”, “left”, “right”, “up”, “down”, “vertical”, “horizontal”, “high”, “low”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0046] Example 1

[0047] like Figure 1 As shown, an embodiment of the present invention provides a PDC single-tooth linear and rotary scraping rock breaking test device, comprising a rock moving device 1, a drilling pressure and depth supply device 2, a tooth rotating device 3 and a tooth linear moving device 4;

[0048] The drilling pressure and depth supply device 2 is installed on the rock moving device 1, and is used to provide the PDC teeth with the drilling pressure or depth required for the test;

[0049] The rock moving device 1 is used to drive the drilling pressure and depth supply device 2 to move in the horizontal direction;

[0050] The tooth rotating device 3 is arranged above the drilling pressure and depth supply device 2, and the tooth rotating device 3 is vertically connected to the horizontally arranged tooth linear moving device 4, and a PDC tooth clamp 31 is arranged at the bottom of the tooth rotating device 3;

[0051] The tooth linear moving device 4 is used to drive the tooth rotating device 3 to move in a horizontal direction perpendicular to the moving direction of the drilling pressure and depth supply device 2, and the tooth rotating device 3 is used to drive the PDC tooth to perform rotational movement in the horizontal direction.

[0052] The test device of the present invention combines the linear scraping and rock breaking method with the rotary scraping and rock breaking method. It can not only carry out single-tooth linear scraping and rock breaking tests, but also carry out single-tooth or multi-tooth rotary scraping and rock breaking tests. While truly simulating the underground rotary rock breaking process, it can also ensure the test accuracy, providing a test basis for the design of efficient rock breaking drill bits.

[0053] Preferably, it also includes a workbench 5 and a computer 6, the rock moving device 1 and the tooth linear moving device 4 are installed on the surface of the workbench 5 by bolts, and the computer 6 is connected to the rock moving device 1, the drilling pressure and depth supply device 2, the tooth rotating device 3, and the tooth linear moving device 4 respectively through rubber cables.

[0054] Preferably, Figure 2 As shown, the rock moving device 1 includes a horizontal guide rail 12, a mobile carrier 10 is installed on the guide rail 12, a reducer 8 and a motor 9 are fixedly connected to the mobile carrier 10 by bolts, the reducer 8 and the motor 9 are connected by a coupling, a gear 7 is installed at the lower part of the reducer 8, a rack 11 is installed on the inner side wall of the guide rail 12, a gear 7 meshing with the rack 11 is installed on the bottom surface of the mobile carrier 10, the gear 7 is connected to the motor 9 through the reducer 8, the motor 9 drives the gear 7 to rotate so that the gear 7 moves horizontally along the rack 11, thereby driving the mobile carrier 10 to move in the horizontal direction, and guide rail baffles 13 are installed at both ends of the guide rail 12 by bolts.

[0055] Preferably, Figure 3 As shown, the drilling pressure and engagement depth supply device 2 is installed on a mobile carrier 10, and includes a hydraulic device 14, a rock clamp 15 and a rock 16. The hydraulic device 14 is connected to the rock clamp 15 by bolts, and the rock 16 is fixed on the rock clamp 15. The hydraulic device 14 can drive the rock 16 to move upward to provide the PDC tooth with the drilling pressure or engagement depth required for the test.

[0056] Preferably, Figure 6As shown, the rock clamp 15 includes a clamp body 23, an elastic gasket 24, a moving block 25, a wrench 26, a bearing 27 and a fixed block 28. A plurality of elastic gaskets 24 are arranged on the inner side of the clamp body 23, a moving block 25 is arranged between the elastic gasket 24 and the clamp body 23, the moving block 25 is installed on the fixed block 28, the fixed block 28 is arranged in a slide groove on the surface of the clamp body 23, the wrench 26 passes through the clamp body 23 and the moving block 25 and is threadedly connected with the moving block 25, by rotating the wrench 26, the fixed block 28, the moving block 25 and the elastic gasket 24 can be pushed to move in the direction opposite to the elastic gasket 24 to achieve rock clamping, wherein the fixed block is limited by the slide groove to prevent the moving block from shaking up and down during the movement; the bearing 27 is arranged at the connection between the wrench 26 and the clamp body 23, for supporting the wrench 26; wherein the wrench 26 and the bearing 27 are interference fit inside, and are clearance fit with the clamp body 23.

[0057] Preferably, Figure 4 As shown, the gear rotating device 3 includes a motor 18, a reducer 17, a sensor 19 and a parameter adjusting device 20 connected in sequence from top to bottom. Figure 7 As shown, the parameter adjustment device 20 includes a pitch adjustment component 29 and a caster angle adjustment component 30. The pitch adjustment component 29 is provided with an adjustment mounting hole. The upper end of the caster angle adjustment component 30 is connected to the adjustment mounting hole by bolts, and the lower end is connected to the PDC tooth fixture 31. Figure 7 The direction of the middle pitch adjustment component 29 is consistent, which is a linear scraping. The direction of the PDC tooth in the right figure is perpendicular to the direction of the pitch adjustment component 29, and two PDC teeth are installed, which is a multi-tooth rotary scraping.

[0058] Preferably, Figure 8 As shown, the caster angle adjustment component 30 includes an initial caster angle adjustment component 32, a caster angle increase adjustment component 33 and a caster angle reduction adjustment component 34; wherein the angle of the initial caster angle adjustment component 32 is 0, the caster angle of the tooth is the caster angle of the PDC tooth fixture, the caster angle increase adjustment component 33 increases the angle based on the initial caster angle adjustment component 32, and the caster angle of the tooth is the sum of the increase angle and the caster angle of the PDC tooth fixture, and the caster angle reduction adjustment component 34 reduces the angle based on the initial caster angle adjustment component 32, and the caster angle of the tooth is the difference between the caster angle of the PDC tooth fixture and the reduction angle. The above components can be used to adjust different caster angles without processing PDC tooth fixtures with different caster angles.

[0059] Preferably, Figure 5As shown, the tooth linear moving device 4 includes a screw rod 21 and a motor 3 22. The front end of the screw rod 21 is connected to the tooth rotating device 3. The motor 3 22 drives the screw rod 21 and then drives the tooth rotating device 3 to move horizontally.

[0060] Preferably, Fig. 9 As shown, the screw 21 includes a screw 35, a second bearing 36, a screw housing 37 and an extension rod 38. The screw housing 37 has openings at both ends, and the extension rod 38 is sleeved in the screw housing 37. One end of the extension rod 38 is connected with the screw 35 through an internal thread. The end of the screw 35 extends out of the end of the screw housing 37 and is connected to the motor three 22, and the other end of the extension rod 38 extends out of the end of the screw housing 37 and is connected to the gear rotating device 3; wherein the screw 35 in the screw 21 is interference fit with the inside of the second bearing 36, the outside of the second bearing 36 is interference fit with the inside of the screw housing 37, and the inside of the screw housing 37 and the surface of the extension rod 38 are clearance fit.

[0061] When the present invention performs a PDC single-tooth linear scraping and rock-breaking test, the computer controls the tooth rotating device to remain fixed, and linear scraping is performed only by the tooth linear moving device. During this process, the rock-breaking scraping trajectory is changed by the rock moving device, and the drilling pressure or depth required for the test is provided by the drilling pressure and depth supply device;

[0062] When conducting the PDC tooth rotary scraping and rock breaking test, the computer controls the tooth linear moving device and the rock moving device to be fixed at a suitable position, so that the tooth rotating device stays just above the rock, and the rotary scraping and rock breaking test is carried out. During this process, the drilling pressure or depth required for the test is provided by the drilling pressure and depth supply device;

[0063] When conducting a multiple PDC teeth combined rotary scraping and rock breaking test, multiple PDC teeth can be installed on the pitch adjustment component according to actual needs, and the parameters of different teeth can be adjusted. The computer controls the tooth linear moving device and the rock moving device to be fixed in a suitable position, so that the tooth rotating device stays directly above the rock, and a rotary scraping and rock breaking test is carried out. During this process, the drilling pressure or depth required for the test is provided by the drilling pressure and depth supply device.

[0064] Since the present invention has a tooth linear moving device, the rock surface can be planed by single-tooth linear scraping before rotary scraping and rock breaking, thereby ensuring the accuracy of the test, and a multiple PDC tooth combined rotary scraping and rock breaking test can be carried out according to test requirements. It only needs to install multiple PDC teeth side by side on the pitch adjusting component to carry out the multiple PDC teeth combined rotary scraping and rock breaking test, which can more realistically simulate the multi-tooth rock breaking of the PDC drill bit.

[0065] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A test device suitable for PDC single-tooth linear and rotary scraping and rock breaking, It is characterized in that It comprises a rock moving device (1), a drilling pressure and depth supply device (2), a tooth rotating device (3) and a tooth linear moving device (4); The drilling pressure and depth supply device (2) is installed on the rock moving device (1) and is used to provide the PDC teeth with the drilling pressure or depth required for the test; The rock moving device (1) is used to drive the drilling pressure and depth supply device (2) to move in the horizontal direction; The tooth rotating device (3) is arranged above the drilling pressure and depth supply device (2), the tooth rotating device (3) is vertically connected to the horizontally arranged tooth linear moving device (4), and a PDC tooth clamp (31) is arranged at the bottom of the tooth rotating device (3); The tooth linear moving device (4) is used to drive the tooth rotating device (3) to perform linear movement along a horizontal direction perpendicular to the moving direction of the drilling pressure and depth supply device (2), and the tooth rotating device (3) is used to drive the PDC tooth to perform rotational movement in the horizontal direction.

2. A PDC single-tooth linear and rotary scraping and rock breaking test device according to claim 1, It is characterized in that The invention also comprises a workbench (5) and a computer (6). The rock moving device (1) and the tooth linear moving device (4) are mounted on the surface of the workbench (5). The computer (6) is connected to the rock moving device (1), the drilling pressure and depth supply device (2), the tooth rotating device (3), and the tooth linear moving device (4) respectively through rubber cables.

3. A PDC single-tooth linear and rotary scraping rock breaking test device according to claim 1, It is characterized in that The rock moving device (1) comprises a horizontal guide rail (12), a moving carrier (10) is mounted on the guide rail (12), a rack (11) is mounted on the inner side wall of the guide rail (12), a gear (7) meshing with the rack (11) is mounted on the bottom surface of the moving carrier (10), the gear (7) is connected to a motor (9) via a reducer (8), and the motor (9) drives the gear (7) to rotate so that the gear (7) moves horizontally along the rack (11), thereby driving the moving carrier (10) to move in the horizontal direction.

4. A PDC single-tooth linear and rotary scraping rock breaking test device according to claim 3, It is characterized in that Guide rail baffles (13) are installed at both ends of the guide rail (12).

5. A PDC single-tooth linear and rotary scraping rock breaking test device according to claim 1, It is characterized in that The drilling pressure and engagement depth supply device (2) is installed on a mobile carrier (10), and comprises a hydraulic device (14), a rock clamp (15) and a rock (16) installed on the rock clamp (15); the hydraulic device (14) is capable of driving the rock (16) to move upward to provide the PDC tooth with the drilling pressure or engagement depth required for the test.

6. A PDC single-tooth linear and rotary scraping rock breaking test device according to claim 1, It is characterized in that The rock clamp (15) comprises a clamp body (23), an elastic gasket (24), a moving block (25) and a wrench (26); a plurality of elastic gaskets (24) are arranged on the inner side of the clamp body (23); a moving block (25) is arranged between the elastic gasket (24) and the clamp body (23); the lower end of the moving block (25) is arranged in a slide groove on the surface of the clamp body (23); the wrench (26) passes through the clamp body (23) and the moving block (25) and is threadedly connected to the moving block (25); by rotating the wrench (26), the moving block (25) and the elastic gasket (24) can be pushed to move in the direction of the elastic gasket (24) arranged opposite to the moving block (24) to achieve rock clamping.

7. A PDC single-tooth linear and rotary scraping rock breaking test device according to claim 1, It is characterized in that The tooth rotating device (3) comprises a second motor (18), a second reducer (17), a sensor (19) and a parameter adjusting device (20) which are connected in sequence from top to bottom. The parameter adjusting device (20) comprises a pitch adjusting component (29) and a caster angle adjusting component (30). An adjusting mounting hole is provided on the pitch adjusting component (29). The upper end of the caster angle adjusting component (30) is connected to the adjusting mounting hole by a bolt, and the lower end is connected to a PDC tooth clamp (31).

8. A PDC single-tooth linear and rotary scraping and rock breaking test device according to claim 7, It is characterized in that The caster angle adjustment component (30) comprises an initial caster angle adjustment component (32), a caster angle increasing adjustment component (33) and a caster angle decreasing adjustment component (34).

9. A PDC single-tooth linear and rotary scraping and rock breaking test device according to claim 1, It is characterized in that The tooth linear moving device (4) comprises a screw rod (21) and a motor three (22); the front end of the screw rod (21) is connected to the tooth rotating device (3); the motor three (22) drives the screw rod (21) and thereby drives the tooth rotating device (3) to move horizontally.

10. A PDC single-tooth linear and rotary scraping rock breaking test device according to claim 9, It is characterized in that The screw rod (21) comprises a screw rod (35), a second bearing (36), a screw rod housing (37) and a protruding rod (38). The screw rod housing (37) has openings at both ends. The protruding rod (38) is sleeved in the screw rod housing (37). One end of the protruding rod (38) is internally threadedly connected with the screw rod (35). The end of the screw rod (35) protrudes out of the end of the screw rod housing (37) and is connected to the third motor (22). The other end of the protruding rod (38) protrudes out of the end of the screw rod housing (37) and is connected to the gear rotating device (3).

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