A PDC drill bit for directional drilling

Abstract

The present invention discloses a PDC drill bit for directional drilling, which belongs to the field of geological drilling technology, and comprises a drill bit body, a load assembly fixedly connected to the inner side wall of the drill bit body, and a directional assembly fixedly connected to the inner side wall of the load assembly. In the present invention, through the mutual cooperation of the designed load assembly, directional assembly, drive assembly, support assembly and resistance reduction assembly, the stability of the working environment of the conical head can be improved, so that the conical head can maintain a relatively stable directional drilling action during the feeding process, and the carrier can also drive the dividing net to rotate, and the pushing force generated by the spiral blades during the transmission process can be used to achieve the crushing of mineral blocks, thereby effectively preventing the mineral blocks from blocking the drilling well, ensuring the smooth progress of the drilling work, and reducing the lateral resistance encountered by the drill bit body during the drilling process, effectively ensuring the stability of the drill bit body during the working process.

Description

Technical Field

[0001] The invention belongs to the technical field of geological drilling, and in particular relates to a PDC drill bit for directional drilling. Background Art

[0002] A polycrystalline diamond composite drill bit is a composite bit with a circular shape that is welded on a cylindrical cutting tool. The cutting tool is mounted on the drill bit body to form a PDC drill bit. It is mainly used in coal seam drilling and excavation in coal mines and oil and gas fields.

[0003] The surface of the drill bit base is provided with a number of blades, and a number of diamond cutting teeth are provided on the blades, which become a PDC drill bit. During the drilling process of using the PDC drill bit, it is affected by the cutting surface, that is, the blade surface and the cutting edge surface, resulting in poor control ability of the PDC surface, and it is easy to be misaligned during the drilling process. In addition, when encountering greater resistance in the lateral direction, it is easy to shift sideways. Therefore, at this stage, there is an urgent need for a directional drilling PDC drill bit to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that a PDC drill bit having a plurality of blades on its base surface and a plurality of diamond cutting teeth is affected by the cutting surface, i.e., the blade surface and the cutting edge surface, during the drilling process of the PDC drill bit, the control ability of the PDC surface is poor, the bit is easily misaligned during the drilling process, and the bit is easily shifted when encountering greater resistance in the lateral direction.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The PDC drill bit has a plurality of driving mechanisms, and the driving mechanism is mainly located in the driving mechanism, and the driving mechanism is mainly located in the driving mechanism, and the driving mechanism is mainly located in the driving mechanism. The driving mechanism is mainly located in the driving mechanism, and the driving mechanism is mainly located in the driving mechanism.

[0007] As a further description of the above technical solution:

[0008] The load assembly includes a carrier, the outer contour surface of the carrier is fixedly connected to the inner side wall of the drill body, and the carrier and the drill body are also fixedly connected via a dividing net, and a reinforcement sleeve is clamped on the top of the carrier.

[0009] As a further description of the above technical solution:

[0010] The directional assembly includes a reinforcement seat, the outer contour surface of the reinforcement seat is fixedly connected to the inner surface of the reinforcement sleeve, the top of the reinforcement seat is fixedly connected to a drill shaft, the top end of the drill shaft is fixedly connected to a conical head, and the surface of the drill shaft is also wrapped with spiral blades.

[0011] As a further description of the above technical solution:

[0012] The support assembly includes a connecting sleeve, which is clamped in the through-connecting hole. A first sliding connecting groove is provided on the inner side wall of the connecting sleeve. A first sliding connecting seat is slidingly connected in the first sliding connecting groove. The side end face of the first sliding connecting seat is fixedly connected to the end face inside the first sliding connecting groove through a first supporting spring.

[0013] As a further description of the above technical solution:

[0014] The drive assembly includes an outer ring, an inner ring is provided on the inner side of the outer ring, the inner ring is fixedly connected to the surface of the secondary shaft, the outer contour surface of the inner ring is fixedly connected to the inner surface of the outer ring through a bridge-type connecting frame, and a protrusion is fixedly connected to the position of the outer contour surface of the outer ring corresponding to the resistance reduction component.

[0015] As a further description of the above technical solution:

[0016] The cross-sectional shape of the first sliding connection seat in a side view is a T-shaped structure, and the cross-sectional shape of the first sliding connection groove in a side view is a T-shaped structure.

[0017] As a further description of the above technical solution:

[0018] The power conversion assembly includes a driving gear, which is fixedly connected to the surface of the main shaft. The surface of the main shaft is meshed with a driven gear, and the surface of the driven gear is also meshed with a gear ring. The outer contour surface of the gear ring is fixedly connected to the inner surface of the drive sleeve.

[0019] As a further description of the above technical solution:

[0020] A second bearing is clamped on the top of the driven gear, a transfer shaft is sleeved inside the second bearing, the end of the transfer shaft is fixedly connected to a fixing seat, the outer contour surface of the fixing seat is fixedly connected to the inner side wall of the driving sleeve, and a card interface is opened at the bottom of the fixing seat.

[0021] As a further description of the above technical solution:

[0022] The resistance reduction component includes a resistance reduction component 1 and a resistance reduction component 2, the resistance reduction component 1 includes a firing rod 1, the firing rod 1 is fixedly connected to the opposite surface of the first sliding connection seat, the firing rod 1 is fixedly connected to a driving member 1 at one end close to the protrusion, and the other end of the firing rod 1 is fixedly connected to a pointed cone, a steel hoop is clamped on the drill bit body, a vibration head is sleeved in the steel hoop, and a second sliding connection groove is opened on the inner wall of the steel hoop at a position corresponding to the vibration head, a second sliding connection seat is slidably connected in the second sliding connection groove, the end face of the second sliding connection seat is fixedly connected to the end face inside the second sliding connection groove by a second supporting spring, and the second sliding connection seat and the opposite surface of the vibration head are fixedly connected.

[0023] As a further description of the above technical solution:

[0024] The second resistance reduction component includes a second firing rod, one end of the second firing rod close to the protrusion is fixedly connected to the second driving member, and the other end of the firing rod is fixedly connected to the cone thorn.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] 1. In the present invention, the stability of the working environment of the conical head can be improved through the mutual cooperation of the designed load assembly, directional assembly, drive assembly, support assembly and resistance reduction assembly. Therefore, the conical head can maintain a relatively stable directional drilling action during the feeding process, and the carrier can also drive the dividing net to rotate. The pushing force generated by the spiral blades during the transmission process can be used to break the mineral blocks, thereby effectively preventing the mineral blocks from blocking the drilling, ensuring the smooth progress of the drilling work, and reducing the lateral resistance encountered by the drill bit body during the drilling process, effectively ensuring the stability of the drill bit body during operation.

[0027] 2. In the present invention, the designed load assembly and directional assembly, since the stress points of the conical head are relatively concentrated, the breakthrough performance is excellent, and the guiding effect of the spiral blades is supplemented to improve the stability of the working environment of the conical head. Therefore, the conical head can maintain a relatively stable directional drilling action during the feeding process. On the other hand, it can achieve the crushing of mineral blocks, thereby effectively preventing the mineral blocks from clogging the drilling well and ensuring the smooth progress of the drilling work.

[0028] 3. In the present invention, through the designed drive assembly, support assembly and resistance reduction assembly, large mineral blocks can be quickly crushed, the lateral resistance encountered by the drill bit body during drilling is reduced, and the stability of the drill bit body during operation is effectively ensured.

[0029] 4. In the present invention, through the designed power conversion component, the driving sleeve drives the drill body to perform drilling work, and on this basis, a relative motion relationship between the drill body and the driving component can be achieved.

[0030] 5. In the present invention, the designed drive assembly, support assembly and resistance reduction assembly 2 can quickly realize further crushing of small mineral blocks, reduce the lateral resistance encountered by the drill bit body during drilling, and effectively ensure the stability of the drill bit body during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Exploded view of a PDC drill bit for directional drilling proposed by the present invention

[0032] Figure 2 This is a schematic diagram of the three-dimensional structure of a driving sleeve in a PDC drill bit for directional drilling proposed by the present invention;

[0033] Figure 3 This is a schematic diagram of the three-dimensional structure of the drag reduction component 2 in a PDC drill bit for directional drilling proposed by the present invention;

[0034] Figure 4 An exploded view of a support assembly in a PDC drill bit for directional drilling proposed by the present invention;

[0035] Figure 5 This is a schematic diagram of the three-dimensional structure of a fixing seat in a PDC drill bit for directional drilling proposed by the present invention;

[0036] Figure 6 This is a schematic diagram of the combined structure of a drag reduction component and a support component in a PDC drill bit for directional drilling proposed by the present invention;

[0037] Figure 7 This is a schematic diagram of the three-dimensional structure of a PDC drill bit for directional drilling proposed by the present invention;

[0038] Figure 8 This is a schematic cross-sectional structural diagram of a drill bit body of a PDC drill bit for directional drilling proposed by the present invention.

[0039] Legend:

[0040] 1. Drill bit body; 2. Load assembly; 201. Carrier; 202. Splitting net; 203. Reinforcement sleeve; 3. Orientation assembly; 301. Reinforcement seat; 302. Drill shaft; 303. Conical head; 304. Spiral blade; 4. Drive assembly; 401. Outer ring; 402. Bridge-type connecting frame; 403. Inner ring; 404. Protrusion; 5. Resistance reduction assembly (1); 501. Firing rod (1); 502. Cone; 503. Drive member (1); 6. Support assembly; 601. Connecting sleeve; 602. First sliding connecting groove; 603. First sliding connecting seat; 6 04. First support spring; 7. Secondary shaft; 8. Main shaft; 9. First bearing; 10. Second resistance reduction component; 101. Second firing rod; 102. Cone spike; 103. Second driving component; 11. Through-connecting hole; 12. Driving sleeve; 13. Power conversion component; 131. Driving gear; 132. Driven gear; 133. Second bearing; 134. Adapter shaft; 135. Gear ring; 136. Fixed seat; 14. Card interface; 15. Steel hoop; 16. Vibrating head; 17. Second sliding connection seat; 18. Second sliding connection groove; 19. Second support spring. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0042] Example 1

[0043] A PDC drill bit for directional drilling includes a drill bit body 1, a load component 2 is fixedly connected to the inner side wall of the drill bit body 1, a directional component 3 is fixedly connected to the inner side wall of the load component 2, and a drive component 4 is further provided on the inner side of the drill bit body 1, the drive component 4 is located below the load component 2, and a through-connection hole 11 is opened at a position on the surface of the drill bit body 1 corresponding to the drive component 4, a support component 6 is clamped in the through-connection hole 11, a resistance reduction component is sleeved inside the support component 6, the drive component 4 is fixedly connected to the surface of the secondary shaft 7, the bottom end of the secondary shaft 7 is fixedly connected to the main shaft 8, the surface of the main shaft 8 is sleeved with a first bearing 9, the first bearing 9 is clamped in the card interface 14 opened at the bottom of the power conversion component 13, and the power conversion component 13 is located on the inner side of the drive sleeve 12, and the top of the drive sleeve 12 is fixedly connected to the bottom of the drill bit body 1.

[0044] Specifically, such as Figure 1The load assembly 2 includes a carrier 201, the outer contour surface of the carrier 201 is fixedly connected to the inner side wall of the drill body 1, and the carrier 201 and the drill body 1 are also fixedly connected through a dividing net 202, and a reinforcement sleeve 203 is clamped on the top of the carrier 201.

[0045] Specifically, such as Figure 1 The directional component 3 includes a reinforcement seat 301, the outer contour surface of the reinforcement seat 301 is fixedly connected to the inner surface of the reinforcement sleeve 203, the top of the reinforcement seat 301 is fixedly connected to the drill shaft 302, the top of the drill shaft 302 is fixedly connected to the conical head 303, and the surface of the drill shaft 302 is also wrapped with spiral blades 304. Through the designed load component 2 and directional component 3, the drill bit body 1 rotates under the driving force of the main shaft 8. Since the load component 2 is used as the connection medium between the directional component 3 and the drill bit body 1, the drill bit body 1 synchronizes the torque to the drill shaft 302 through the carrier 201, so that the conical head 303 and the spiral blades 304 on the drill shaft 302 perform synchronous excavation actions with the drill bit body 1, and the carrier 201 will also drive the dividing net 202 to rotate, and the pushing pressure generated by the spiral blades 304 during the transmission process can be used to crush the mineral blocks.

[0046] Specifically, such as Figure 1 The support assembly 6 includes a connecting sleeve 601, which is clamped in the through-connecting hole 11. A first sliding connecting groove 602 is provided on the inner side wall of the connecting sleeve 601. A first sliding connecting seat 603 is slidably connected in the first sliding connecting groove 602. The side end face of the first sliding connecting seat 603 is fixedly connected to the end face inside the first sliding connecting groove 602 through a first supporting spring 604. Through the designed driving assembly 4, supporting assembly 6 and resistance reduction assembly 5, the main shaft 8 will also apply torque to the inner ring 403 through the secondary shaft 7 in the process of driving the drill body 1 to rotate, and the inner ring 403 will drive the outer ring 401 to rotate rapidly through the bridge-type connecting frame 402. When the protrusion 404 comes into contact with the driving member 503, the pointed cone 502 on the firing rod 501 can be quickly fired.

[0047] Specifically, such as Figure 1 The drive component 4 includes an outer ring 401, an inner ring 403 is provided on the inner side of the outer ring 401, the inner ring 403 is fixedly connected to the surface of the secondary shaft 7, the outer contour surface of the inner ring 403 is fixedly connected to the inner surface of the outer ring 401 through a bridge-type connecting frame 402, and a protrusion 404 is fixedly connected to the position of the outer contour surface of the outer ring 401 corresponding to the resistance reduction component.

[0048] Specifically, such as Figure 1 The cross-sectional shape of the first sliding connection seat 603 when viewed from the side is a T-shaped structure, and the cross-sectional shape of the first sliding connection groove 602 when viewed from the side is a T-shaped structure.

[0049] Specifically, such as Figure 1 The power conversion assembly 13 includes a driving gear 131, which is fixedly connected to the surface of the main shaft 8. The surface of the main shaft 8 is meshed with a driven gear 132, and the surface of the driven gear 132 is also meshed with a gear ring 135. The outer contour surface of the gear ring 135 is fixedly connected to the inner surface of the drive sleeve 12. Through the designed power conversion assembly 13, when the main shaft 8 rotates, the driving gear 131, the driven gear 132 and the gear ring 135 will be used to apply torque to the drive sleeve 12, and the drive sleeve 12 will drive the drill body 1 to perform drilling work, and on this basis, the relative motion relationship between the main shaft 8 and the drive assembly 4 can also be realized.

[0050] Specifically, such as Figure 1 The top of the driven gear 132 is clamped with a second bearing 133, and the second bearing 133 is sleeved with a transfer shaft 134. The end of the transfer shaft 134 is fixedly connected to a fixing seat 136. The outer contour surface of the fixing seat 136 is fixedly connected to the inner wall of the driving sleeve 12, and the card interface 14 is opened at the bottom of the fixing seat 136.

[0051] Specifically, such as Figure 1 The resistance reduction component includes a resistance reduction component 1 5 and a resistance reduction component 2 10. The resistance reduction component 1 5 includes a firing rod 1 501. The firing rod 1 501 is fixedly connected to the opposite surface of the first sliding connection seat 603. The end of the firing rod 1 501 close to the protrusion 404 is fixedly connected to the driving member 1 503, and the other end of the firing rod 1 501 is fixedly connected to the pointed cone 502.

[0052] Example 2

[0053] A PDC drill bit for directional drilling includes a drill bit body 1, a load component 2 is fixedly connected to the inner side wall of the drill bit body 1, a directional component 3 is fixedly connected to the inner side wall of the load component 2, and a drive component 4 is further provided on the inner side of the drill bit body 1, the drive component 4 is located below the load component 2, and a through-connection hole 11 is opened at a position on the surface of the drill bit body 1 corresponding to the drive component 4, a support component 6 is clamped in the through-connection hole 11, a resistance reduction component is sleeved inside the support component 6, the drive component 4 is fixedly connected to the surface of the secondary shaft 7, the bottom end of the secondary shaft 7 is fixedly connected to the main shaft 8, the surface of the main shaft 8 is sleeved with a first bearing 9, the first bearing 9 is clamped in the card interface 14 opened at the bottom of the power conversion component 13, and the power conversion component 13 is located on the inner side of the drive sleeve 12, and the top of the drive sleeve 12 is fixedly connected to the bottom of the drill bit body 1.

[0054] Specifically, such as Figure 1The load assembly 2 includes a carrier 201, the outer contour surface of the carrier 201 is fixedly connected to the inner side wall of the drill body 1, and the carrier 201 and the drill body 1 are also fixedly connected through a dividing net 202, and a reinforcement sleeve 203 is clamped on the top of the carrier 201.

[0055] Specifically, such as Figure 1 The directional component 3 includes a reinforcement seat 301, the outer contour surface of the reinforcement seat 301 is fixedly connected to the inner surface of the reinforcement sleeve 203, the top of the reinforcement seat 301 is fixedly connected to the drill shaft 302, the top of the drill shaft 302 is fixedly connected to the conical head 303, and the surface of the drill shaft 302 is also wrapped with spiral blades 304. Through the designed load component 2 and directional component 3, the drill bit body 1 rotates under the driving force of the main shaft 8. Since the load component 2 is used as the connection medium between the directional component 3 and the drill bit body 1, the drill bit body 1 synchronizes the torque to the drill shaft 302 through the carrier 201, so that the conical head 303 and the spiral blades 304 on the drill shaft 302 perform synchronous excavation actions with the drill bit body 1, and the carrier 201 will also drive the dividing net 202 to rotate, and the pushing pressure generated by the spiral blades 304 during the transmission process can be used to crush the mineral blocks.

[0056] Specifically, such as Figure 1 The support assembly 6 includes a connecting sleeve 601, which is clamped in the through-connecting hole 11. A first sliding connecting groove 602 is provided on the inner side wall of the connecting sleeve 601. A first sliding connecting seat 603 is slidably connected in the first sliding connecting groove 602. The side end face of the first sliding connecting seat 603 is fixedly connected to the end face inside the first sliding connecting groove 602 through a first supporting spring 604. Through the designed driving assembly 4, support assembly 6 and resistance reduction assembly 2 10, the main shaft 8 will also apply torque to the inner ring 403 through the secondary shaft 7 in the process of driving the drill body 1 to rotate, and the inner ring 403 will drive the outer ring 401 to rotate rapidly through the bridge-type connecting frame 402. When the protrusion 404 comes into contact with the driving member 2 103, the cone thorn 102 on the firing rod 2 101 can be quickly fired.

[0057] Specifically, such as Figure 1 The drive component 4 includes an outer ring 401, an inner ring 403 is provided on the inner side of the outer ring 401, the inner ring 403 is fixedly connected to the surface of the secondary shaft 7, the outer contour surface of the inner ring 403 is fixedly connected to the inner surface of the outer ring 401 through a bridge-type connecting frame 402, and a protrusion 404 is fixedly connected to the position of the outer contour surface of the outer ring 401 corresponding to the resistance reduction component.

[0058] Specifically, such as Figure 1 The cross-sectional shape of the first sliding connection seat 603 when viewed from the side is a T-shaped structure, and the cross-sectional shape of the first sliding connection groove 602 when viewed from the side is a T-shaped structure.

[0059] Specifically, such as Figure 1 The power conversion assembly 13 includes a driving gear 131, which is fixedly connected to the surface of the main shaft 8. The surface of the main shaft 8 is meshed with a driven gear 132, and the surface of the driven gear 132 is also meshed with a gear ring 135. The outer contour surface of the gear ring 135 is fixedly connected to the inner surface of the drive sleeve 12. Through the designed power conversion assembly 13, when the main shaft 8 rotates, the driving gear 131, the driven gear 132 and the gear ring 135 will be used to apply torque to the drive sleeve 12, and the drive sleeve 12 will drive the drill body 1 to perform drilling work, and on this basis, the relative motion relationship between the main shaft 8 and the drive assembly 4 can also be realized.

[0060] Specifically, such as Figure 1 A second bearing 133 is clamped on the top of the driven gear 132, and an adapter shaft 134 is sleeved in the second bearing 133. The end of the adapter shaft 134 is fixedly connected to a fixed seat 136. The outer contour surface of the fixed seat 136 is fixedly connected to the inner wall of the driving sleeve 12, and the card interface 14 is opened at the bottom of the fixed seat 136. A steel hoop 15 is clamped on the drill body 1, and a vibration head 16 is sleeved in the steel hoop 15. A second sliding connecting groove 18 is opened on the inner wall of the steel hoop 15 at the position corresponding to the vibration head 16. The second sliding connecting seat 17 is slidably connected in the second sliding connecting groove 18. The end face of the second sliding connecting seat 17 is fixedly connected to the end face inside the second sliding connecting groove 18 through a second support spring 19. The second sliding connecting seat 17 and the opposite surfaces of the vibration head 16 are fixedly connected.

[0061] Specifically, such as Figure 1 The resistance reduction component 10 includes a firing rod 101 , one end of the firing rod 101 close to the protrusion 404 is fixedly connected to the driving member 103 , and the other end of the firing rod is fixedly connected to the cone thorn 102 .

[0062] Working principle: When in use, the main shaft 8 will use the driving gear 131, the driven gear 132 and the gear ring 135 to apply torque to the driving sleeve 12 during the rotation process, and the driving sleeve 12 will drive the drill body 1 to perform drilling work, and on this basis, the relative motion relationship with the driving component 4 can be realized. The drill body 1 rotates under the driving force of the main shaft 8. Since the load component 2 is used as the connection medium between the directional component 3 and the drill body 1, on the one hand, the drill body 1 synchronizes the torque to the drill shaft 302 through the carrier 201, so that the drill shaft 302 is rotated. The conical head 303 and the spiral blade 304 perform synchronous excavation with the drill body 1. Since the stress points of the conical head 303 are relatively concentrated, the breakthrough performance is excellent. The spiral blade 304 also plays a guiding role, which improves the stability of the working environment of the conical head 303. Therefore, the conical head 303 can maintain a relatively stable directional drilling action during the feeding process. On the other hand, the carrier 201 also drives the dividing net 202 to rotate. The pushing force generated by the spiral blade 304 during the transmission process can be used to break the mineral blocks, thereby effectively preventing the mineral blocks from blocking the drilling well and ensuring the drilling In order to ensure the smooth progress of well operation, the main shaft 8 will also apply torque to the inner ring 403 through the secondary shaft 7 when driving the drill body 1 to rotate, and the inner ring 403 will drive the outer ring 401 to rotate quickly through the bridge-type connecting frame 402. When the protrusion 404 comes into contact with the driving member 503, the pointed cone 502 on the firing rod 501 can be quickly fired. The stress at the tip of the pointed cone 502 can be used to quickly crush large mineral blocks, reduce the lateral resistance of the drill body 1 during drilling, and effectively ensure the smooth operation of the drill body 1 during operation. Stability: When the main shaft 8 drives the drill body 1 to rotate, it will also apply torque to the inner ring 403 through the secondary shaft 7, and the inner ring 403 drives the outer ring 401 to rotate rapidly through the bridge-type connecting frame 402. When the protrusion 404 comes into contact with the driving member 103, the cone thorn 102 on the firing rod 101 can be quickly fired. The stress at the tip of the cone thorn 102 can be used to quickly realize further crushing of small mineral blocks, reduce the lateral resistance of the drill body 1 during the drilling process, and effectively ensure the stability of the drill body 1 during operation.

[0063] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A PDC drill bit for directional drilling, comprising a drill bit body (1), characterized in that: A load assembly (2) is fixedly connected to the inner side wall of the drill bit body (1), and a directional assembly (3) is fixedly connected to the inner side wall of the load assembly (2). A driving assembly (4) is also provided on the inner side of the drill bit body (1), and the driving assembly (4) is located below the load assembly (2). A through-connection hole (11) is provided on the surface of the drill bit body (1) at a position corresponding to the driving assembly (4). A support assembly (6) is clamped in the through-connection hole (11). The support assembly ( 6) is provided with a resistance reduction component, the driving component (4) is fixedly connected to the surface of the secondary shaft (7), the bottom end of the secondary shaft (7) is fixedly connected to the main shaft (8), the surface of the main shaft (8) is sleeved with a first bearing (9), the first bearing (9) is clamped in a clamping interface (14) provided at the bottom of the power conversion component (13), and the power conversion component (13) is located on the inner side of the driving sleeve (12), and the top of the driving sleeve (12) is fixedly connected to the bottom of the drill body (1); The support assembly (6) includes a connecting sleeve (601), the connecting sleeve (601) is clamped in the through-connecting hole (11), a first sliding connecting groove (602) is provided on the inner side wall of the connecting sleeve (601), a first sliding connecting seat (603) is slidably connected in the first sliding connecting groove (602), and the side end face of the first sliding connecting seat (603) is fixedly connected to the end face inside the first sliding connecting groove (602) through a first supporting spring (604), the driving assembly (4) includes an outer ring (401), an inner ring (403) is provided on the inner side of the outer ring (401), the inner ring (403) is fixedly connected to the surface of the secondary shaft (7), the outer contour surface of the inner ring (403) is fixedly connected to the inner surface of the outer ring (401) through a bridge-type connecting frame (402), and a protrusion (404) is fixedly connected to the position of the outer contour surface of the outer ring (401) corresponding to the resistance reduction assembly; The resistance reduction component includes a resistance reduction component 1 (5) and a resistance reduction component 2 (10), wherein the resistance reduction component 1 (5) includes a firing rod 1 (501), wherein the firing rod 1 (501) and the opposite surface of the first sliding connection seat (603) are fixedly connected, wherein one end of the firing rod 1 (501) close to the protrusion (404) is fixedly connected to a driving member 1 (503), and the other end of the firing rod 1 (501) is fixedly connected to a pointed cone (502), and a steel hoop (15) is clamped on the drill bit body (1), wherein a vibration head (16) is sleeved in the steel hoop (15), and a hole is opened at a position corresponding to the vibration head (16) on the inner side wall of the steel hoop (15). A second sliding connection groove (18) is provided, and a second sliding connection seat (17) is slidably connected in the second sliding connection groove (18), and the end surface of the second sliding connection seat (17) is fixedly connected to the end surface inside the second sliding connection groove (18) through a second supporting spring (19), and the second sliding connection seat (17) and the opposite surface of the vibration head (16) are fixedly connected. The second resistance reduction component (10) includes a second firing rod (101), and one end of the second firing rod (101) close to the protrusion (404) is fixedly connected to the second driving member (103), and the other end of the second firing rod (101) is fixedly connected to the cone thorn (102).

2. A PDC drill bit for directional drilling according to claim 1, characterized in that: The load assembly (2) comprises a carrier (201), the outer contour surface of the carrier (201) is fixedly connected to the inner side wall of the drill bit body (1), and the carrier (201) and the drill bit body (1) are also fixedly connected via a partitioning net (202), and a reinforcement sleeve (203) is clamped on the top of the carrier (201).

3. A PDC drill bit for directional drilling according to claim 2, characterized in that: The directional assembly (3) comprises a reinforcement seat (301), the outer contour surface of the reinforcement seat (301) is fixedly connected to the inner surface of the reinforcement sleeve (203), the top of the reinforcement seat (301) is fixedly connected to a drill shaft (302), the top end of the drill shaft (302) is fixedly connected to a conical head (303), and the surface of the drill shaft (302) is also wound with a spiral blade (304).

4. A PDC drill bit for directional drilling according to claim 1, characterized in that: The cross-sectional shape of the first sliding connection seat (603) when viewed from the side is a T-shaped structure, and the cross-sectional shape of the first sliding connection groove (602) when viewed from the side is a T-shaped structure.

5. A PDC drill bit for directional drilling according to claim 1, characterized in that: The power conversion assembly (13) includes a driving gear (131), the driving gear (131) is fixedly connected to the surface of the main shaft (8), the surface of the main shaft (8) is meshed with a driven gear (132), the surface of the driven gear (132) is also meshed with a gear ring (135), and the outer contour surface of the gear ring (135) is fixedly connected to the inner surface of the drive sleeve (12).

6. A PDC drill bit for directional drilling according to claim 5, characterized in that: The top of the driven gear (132) is clamped with a second bearing (133), the second bearing (133) is sleeved with a transfer shaft (134), the end of the transfer shaft (134) is fixedly connected to a fixing seat (136), the outer contour surface of the fixing seat (136) is fixedly connected to the inner side wall of the driving sleeve (12), and the clamping interface (14) is opened at the bottom of the fixing seat (136).

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