A roller drill bit with anti-sticking structure

Abstract

The present invention discloses a roller drill bit with an anti-stuck structure, and the present invention relates to the technical field of roller drill bits. When the rollers are rotating and jamming rocks, and driving the rocks into between the rollers, the rotation of the rollers will be blocked and unable to rotate, affecting the crushing of the rocks. The roller drill bit with an anti-stuck structure, through the cooperation of the cone block and the pad, limits the depth of the rock penetrating between the cone blocks through the pad during the rotation process. At the same time, when the pad contacts the rock, it assists the cone block to crush the rock. While ensuring the drilling and crushing effect, the pad cooperates with the outer diameter change of the cone block to avoid the rock fragments being stuck between the cone blocks during the crushing process, rotating with the cone during the rotation process, and being stuck inside the drill bit, so that the rotation between the cone mechanisms is blocked and the rock crushing work cannot be effectively performed during the drilling process.

Description

Technical Field

[0001] The invention relates to the technical field of roller drill bits, in particular to a roller drill bit with an anti-sticking structure. Background Art

[0002] The roller drill bit is the most widely used drilling bit, which is mainly composed of a shell, claws, cones, bearings, water holes, oil storage seals and compensation systems. The cones are generally made of alloy steel die forging and are the main working parts of the roller drill bit. Cutting teeth are provided on the cones, which crush rocks by rotating and rolling. The number of cones is usually single, three or assembled multiple cones, among which three-cone drill bits are the most commonly used. During the rolling process, the cones contact the bottom of the well with single and double teeth alternately. The position of the center of the cone fluctuates, causing the drill bit to vibrate longitudinally. At the same time, the drilling pressure borne by the drill bit acts on the rock through the teeth, causing the rock to break. The contact area between the teeth of the roller drill bit and the bottom of the well is small, the specific pressure is high, and it is easy to eat into the formation, thereby achieving the effect of crushing the rock.

[0003] When the roller drill bit is working, it needs to go deeper and deeper, using the rotation of the rollers to crush the rock and soil. During the crushing process, when the rollers rotate and get stuck in the rock, and drive the rock into the gap between the rollers, the rotation of the rollers will be blocked and unable to rotate, affecting the crushing of the rock. Summary of the Invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] A roller drill bit with an anti-sticking structure, comprising:

[0006] A connecting mechanism, the connecting mechanism being used to connect to a drill shaft to transmit the power of the drill to the drill bit;

[0007] A supporting mechanism, wherein the supporting mechanism is mounted on the bottom of the connecting mechanism, and a seal is formed between the supporting mechanism and the connecting mechanism;

[0008] A cone mechanism, the cone mechanism being evenly installed at the bottom of the support mechanism and being used for crushing rock and soil during drilling;

[0009] The outer surface of the convex plate is fixedly mounted on the conical toothed wheel, and the outer surface of the convex plate is fixedly mounted on the conical toothed wheel, and the conical toothed wheel has a conical surface, and the conical surface of the convex plate is fixedly mounted on the outer surface of the conical toothed wheel, and the convex plate is evenly mounted along the center position of the axis of the conical toothed wheel. The pad is fixedly mounted on the outer side of the conical toothed wheel, and the pad is located between the convex plate and the pad. During the rotation, the pad is used to limit the depth of the rock penetrating between the conical toothed blocks. At the same time, when the pad contacts the rock, the conical toothed block is assisted to crush the rock. While ensuring the drilling and crushing effect, the pad cooperates with the outer diameter change of the conical toothed block to prevent the rock fragments from being stuck between the conical toothed blocks during the crushing process. During the rotation, the conical toothed wheel rotates and is stuck in the drill bit, so that the rotation between the gear mechanisms is blocked and the rock crushing work cannot be effectively performed during the drilling process. The conical toothed block is fixedly mounted on the outer side of the convex plate, and the outer diameter of the conical toothed block gradually decreases as it gradually moves away from the convex plate.

[0010] Preferably, the distance between the end of the conical tooth block away from the conical tooth wheel and the outer side of the conical tooth wheel is greater than the distance between the end of the pad away from the conical tooth wheel and the outer side of the conical tooth wheel, the side of the conical tooth wheel close to the support mechanism is a raised arc surface at the center position, the inner wall of the conical tooth wheel is provided with an axis groove, and bearings are fixedly installed at both ends of the conical tooth wheel axis groove, the inner wall of the bearing is in contact with the outer side of the fixed shaft, and an arc convex block is fixedly installed at the center position of the axis groove of the conical tooth wheel, and the arc convex block cooperates with the bearing to reduce the contact area with the fixed shaft, reduce the rotation resistance of the conical tooth wheel, and improve the crushing effect. At the same time, the arc surface of the conical tooth wheel cooperates with the arc surface of the axis hole plate to provide support for the conical tooth wheel, avoid bending of the fixed shaft under drilling pressure, and affect the rotation of the tooth wheel. The arc convex blocks are evenly installed along the center position of the conical tooth wheel, and the opposite surfaces of the arc convex blocks are in contact with the outer side of the fixed shaft.

[0011] Preferably, the connecting mechanism includes a connecting stud, the outer side of the connecting stud is provided with a thread, and a guide groove is opened at the center position of the top of the connecting stud, the bottom of the connecting stud is fixedly installed with a connecting plate, the outer side of the connecting plate is evenly provided with screw holes, and the screw holes of the connecting plate are threadedly connected with bolts, and the connecting plate is fixedly connected to the supporting mechanism through bolts, and the bottom of the connecting plate is provided with an annular groove, and a sealing gasket is clamped at the annular groove of the connecting plate, and the annular groove of the connecting plate cooperates with the sealing gasket through the inner convex ring, the inner convex ring is clamped into the annular groove of the connecting plate, and squeezes the sealing gasket, while positioning the connection position, increasing the tortuosity of the path for internal water to overflow outward, thereby improving the sealing effect, the bottom of the connecting plate is fixedly installed with a snap ring, and the bottom of the snap ring is fixedly installed with a sieve cover, and the sieve cover is located on the inner side of the sealing gasket.

[0012] Preferably, the supporting mechanism includes a fixed plate, the top of the fixed plate is fixedly installed with an inner convex ring, the inner convex ring is adapted to the ring groove of the connecting plate, and the top of the inner convex ring is tightly fitted with the bottom of the sealing gasket, and the bottom of the fixed plate is fixedly installed with an axial hole plate, the axial hole plate is evenly installed along the center position of the fixed plate, and the opposite surface of the axial hole plate is an arc surface concave at the center position, and the arc surface of the axial hole plate is adapted to the arc surface of the conical gear.

[0013] Preferably, an inner spray hole is provided at the center position of the bottom of the fixed disk, and oblique spray grooves are evenly provided at the bottom of the fixed disk, and the oblique spray grooves are inclined inward from bottom to top. Bumps are evenly provided at the edge position of the bottom of the fixed disk, and the bumps are located between the shaft hole plates. When spraying, the inner spray hole cooperates with the outer spray groove to vertically downwardly impact the rock and soil crushing surface, and impact the soil and the crushed rock debris, so that the unbroken rock leaks out and contacts the gear mechanism for crushing. At the same time, the oblique spray groove cooperates with the side spray groove to impact the gear mechanism. During the rotation of the gear mechanism, the soil adhered to its surface is cleaned to avoid a large amount of gravel adhering to the soil surface and getting stuck between the gear mechanism, which causes the rotation of the gear mechanism to be obstructed. The bottom of the bump of the fixed disk is provided with an outer spray groove, and the opposite surfaces of the bumps are provided with side spray grooves.

[0014] The present invention provides a roller drill bit with an anti-sticking structure. It has the following beneficial effects:

[0015] 1. The roller drill bit with an anti-stuck structure, through the cooperation of the cone tooth block and the spacer, limits the depth of the rock penetrating between the cone tooth blocks during the rotation process through the spacer. At the same time, when the spacer comes into contact with the rock, it assists the cone tooth block to crush the rock. While ensuring the drilling and crushing effect, the spacer cooperates with the outer diameter change of the cone tooth block to avoid the rock fragments being stuck between the cone tooth blocks during the crushing process. During the rotation process, the cone wheel rotates with it and is stuck in the drill bit, which hinders the rotation between the cone mechanisms and makes it impossible to effectively perform rock crushing work during the drilling process.

[0016] 2. The cone drill bit with an anti-stuck structure reduces the contact area with the fixed shaft through the cooperation of the arc protrusion and the bearing, reduces the rotation resistance of the conical cone, and improves the crushing effect. At the same time, the arc surface of the conical cone cooperates with the arc surface of the shaft hole plate to provide support for the conical cone, avoiding the bending of the fixed shaft under the drilling pressure, which affects the rotation of the cone.

[0017] 3. The roller drill bit with an anti-stuck structure cooperates with the inner convex ring through the annular groove of the connecting plate and the sealing gasket. The inner convex ring is stuck in the annular groove of the connecting plate and squeezes the sealing gasket. While locating the connection position, it increases the tortuosity of the path for internal water to overflow outward, thereby improving the sealing effect.

[0018] Fourth, the roller drill bit with an anti-stuck structure, through the cooperation of the inner spray hole and the outer spray slot, vertically impacts the rock and soil crushing surface, impacts the soil and the crushed rock debris, so that the unbroken rock leaks out and contacts the roller mechanism for crushing. At the same time, the oblique spray slot and the side spray slot cooperate to impact the roller mechanism. During the rotation of the roller mechanism, the soil adhering to its surface is cleaned to prevent a large amount of gravel from adhering to the soil surface and getting stuck between the roller mechanism, resulting in obstruction of the rotation of the roller mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a roller drill bit with an anti-sticking structure according to the present invention;

[0020] Figure 2 This is a structural side view of a roller cone drill bit with an anti-sticking structure according to the present invention;

[0021] Figure 3 Schematic diagram of the structure of the gear mechanism of the present invention;

[0022] Figure 4 It is a structural anatomical diagram of the gear mechanism of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the connecting mechanism of the present invention;

[0024] Figure 6 It is a structural anatomical diagram of the connecting mechanism of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the support mechanism of the present invention;

[0026] Figure 8 It is a structural anatomical diagram of the support mechanism of the present invention;

[0027] Figure 9 It is a bottom view of the structural dissection of the support mechanism of the present invention.

[0028] In the figure: 1. Connecting mechanism; 2. Supporting mechanism; 3. Gear mechanism; 11. Connecting stud; 12. Connecting plate; 13. Bolt; 14. Snap ring; 15. Sealing washer; 16. Screen cover; 21. Fixed plate; 22. Inner convex ring; 23. Shaft hole plate; 24. Inner spray hole; 25. Oblique spray slot; 26. Side spray slot; 27. Outer spray slot; 31. Fixed shaft; 32. Spacer; 33. Convex plate; 34. Tapered tooth block; 35. Tapered gear; 36. Bearing; 37. Arc convex block. DETAILED DESCRIPTION

[0029] 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 creative efforts are within the scope of protection of the present invention.

[0030] The first embodiment, as Figures 1 to 4 As shown, the present invention provides a technical solution:

[0031] A roller drill bit with an anti-sticking structure, comprising:

[0032] Connecting mechanism 1, which is used to connect the drilling rig shaft to transmit the drilling rig power to the drill bit;

[0033] The supporting mechanism 2 is installed at the bottom of the connecting mechanism 1, and a seal is formed between the supporting mechanism 2 and the connecting mechanism 1;

[0034] The cone mechanism 3 is evenly installed at the bottom of the support mechanism 2, and the cone mechanism 3 is used to crush rock and soil during drilling;

[0035] The gear mechanism 3 includes a fixed shaft 31, which is fixedly mounted on the inner wall of the support mechanism 2, and a conical gear 35 is rotatably mounted on the outer side of the fixed shaft 31. The outer side of the conical gear 35 is a conical surface, and a convex plate 33 is fixedly mounted on the conical surface of the conical gear 35. The convex plate 33 is evenly mounted along the center position of the axis of the conical gear 35. A pad 32 is fixedly mounted on the outer side of the conical gear 35. The fixed shaft 31 is driven to rotate along the center of the axis of the drill shaft through the connection between the fixed shaft 31 and the support mechanism 2. During the rotation, the conical tooth block 34 on the surface of the conical gear 35 contacts the rock and soil with the pad 32, and during the rotation, In the process, through the friction between the cone gear 35 and the rock and soil, the cone gear 35 rotates along the axis center of the fixed shaft 31 under the restriction of the fixed shaft 31, so that the cone tooth block 34 cooperates with the pad 32 and alternately contacts the rock and soil. The interval between the cone tooth blocks 34, during the rotation process, the drilling pressure borne by the drill bit acts on the rock through the cone tooth block 34, and at the same time, the center position of the cone gear 35 fluctuates, generating longitudinal vibration and generating impact force to break the rock. The pad 32 is located between the convex plates 33, and the cone tooth block 34 is fixedly installed on the outside of the convex plate 33. The outer diameter of the cone tooth block 34 gradually decreases as it gradually moves away from the convex plate 33.

[0036] The distance between the end of the conical tooth block 34 away from the conical gear 35 and the outer side of the conical gear 35 is greater than the distance between the end of the spacer 32 away from the conical gear 35 and the outer side of the conical gear 35. The side of the conical gear 35 close to the support mechanism 2 is a raised arc surface at the center position. The inner wall of the conical gear 35 is provided with an axis groove, and bearings 36 are fixedly installed at both ends of the axis groove of the conical gear 35. During the crushing process, the depth of the rock penetrating into the conical tooth blocks 34 is limited by the spacer 32. At the same time, when the spacer 32 contacts the rock, it assists the conical tooth block 34 to crush the rock. The inner wall of the bearing 36 contacts the outer side of the fixed shaft 31. An arc protrusion 37 is fixedly installed at the center position of the axis groove of the conical gear 35. The arc protrusion 37 is evenly installed along the center position of the conical gear 35, and the opposite surface of the arc protrusion 37 contacts the outer side of the fixed shaft 31.

[0037] The second embodiment, based on the first embodiment, see Figures 5 and 6 As shown, the connecting mechanism 1 includes a connecting stud 11, the outer side of the connecting stud 11 is provided with a thread, and a guide groove is provided at the center of the top of the connecting stud 11, and a connecting plate 12 is fixedly installed at the bottom of the connecting stud 11, and screw holes are evenly provided on the outer side of the connecting plate 12. The connecting stud 11 is connected to the drill shaft of the drilling rig, so that the power of the drilling rig is transmitted to the drill bit through the connection of the connecting stud 11. At the same time, the guide groove provides a path for the water to be introduced, so that the water can enter the space between the connecting plate 12 and the support mechanism 2 through the guide groove, and the screw hole of the connecting plate 12 is threadedly connected with a bolt 13, and the connecting plate 12 is connected through the bolt 13. It is fixedly connected to the supporting mechanism 2, and an annular groove is provided at the bottom of the connecting disk 12, and a sealing gasket 15 is clamped at the annular groove of the connecting disk 12. A snap ring 14 is fixedly installed at the bottom of the connecting disk 12. The annular groove at the bottom of the connecting disk 12 cooperates with the sealing gasket 15, and the outside of the water circulation space is sealed with the supporting mechanism 2. After the water is introduced, it flows downward under the dual action of its own gravity and water pressure, passes through the sieve cover 16, and filters the water through the sieve cover 16 to prevent large hard objects from clogging the water spray path. The sieve cover 16 is fixedly installed at the bottom of the snap ring 14, and the sieve cover 16 is located on the inner side of the sealing gasket 15.

[0038] The third embodiment, based on the first and second embodiments, see Figures 7 to 9As shown, the supporting mechanism 2 includes a fixed disk 21, and an inner convex ring 22 is fixedly installed on the top of the fixed disk 21. The inner convex ring 22 is adapted to the annular groove of the connecting disk 12, and the top of the inner convex ring 22 is tightly fitted with the bottom of the sealing gasket 15. The bottom of the fixed disk 21 is fixedly installed with an axial hole plate 23, and the axial hole plate 23 is evenly installed along the center position of the fixed disk 21. By cooperating with the connecting mechanism 1, when connected, the inner convex ring 22 is stuck in the annular groove of the connecting disk 12 and squeezes the sealing gasket 15. While positioning the connection position, it increases the tortuosity of the path for internal water to overflow outward, thereby improving the sealing effect. After the water passes through the sieve cover 16, it diffuses inside the fixed disk 21 and is sprayed out by the inner spray hole 24, the oblique spray groove 25, the side spray groove 26 and the outer spray groove 27. The opposite surface of the axial hole plate 23 is a concave arc surface at the center position, and the arc surface of the axial hole plate 23 is adapted to the arc surface of the bevel gear 35.

[0039] An inner spray hole 24 is provided at the center position of the bottom of the fixed disk 21, and oblique spray grooves 25 are evenly provided at the bottom of the fixed disk 21. The oblique spray grooves 25 are inclined inward from bottom to top. When spraying, the inner spray hole 24 cooperates with the outer spray grooves 27 to vertically impact the rock and soil crushing surface, impacting the soil and the crushed rock debris, so that the unbroken rock leaks out and contacts the gear mechanism 3 for crushing. At the same time, the oblique spray grooves 25 cooperate with the side spray grooves 26 to impact the gear mechanism 3. During the rotation of the gear mechanism 3, the soil adhered to its surface is cleaned. Bumps are evenly provided at the edge position of the bottom of the fixed disk 21, and the bumps are located between the shaft hole plates 23. The bottom of the bumps of the fixed disk 21 is provided with an outer spray groove 27, and the opposite surfaces of the bumps are provided with side spray grooves 26.

[0040] During use, the roller drill bit is connected to the drill shaft of the drilling rig through the connecting mechanism 1, so that the drilling rig drives the roller drill bit to rotate through the drill shaft. During the rotation process, the supporting mechanism 2 cooperates with the connecting mechanism 1 to drive the roller mechanism 3 to rotate along the center position of the axis of rotation of the drill shaft, and the rock and soil are crushed by the roller assembly. At the same time, the water in the drilling rig is introduced into the supporting mechanism 2 and the connecting mechanism 1 through the drill shaft. During the drilling process, the supporting mechanism 2 sprays water to impact the crushed rock and soil, driving the crushed rock and soil to flow out of the drill well.

[0041] The cone gear mechanism 3 is connected with the support mechanism 2 during drilling, and the fixed shaft 31 is driven to rotate along the axis center of the drill shaft through the connection between the fixed shaft 31 and the support mechanism 2. During the rotation, the cone gear 35 is contacted with the rock and soil through the cone tooth block 34 on the surface of the cone gear 35 and the pad 32. During the rotation, the cone gear 35 is restricted by the fixed shaft 31 and rotated along the axis center of the fixed shaft 31 through the friction between the cone tooth block 34 and the pad 32, and alternately contacts the rock and soil. The intervals between the cone tooth blocks 34, during the rotation, the drilling pressure borne by the drill bit acts on the rock through the cone tooth block 34. At the same time, the center position of the cone gear 35 fluctuates, generating longitudinal vibration and generating impact force to crush the rock. During the crushing process, the depth of the rock penetrating between the cone tooth blocks 34 is limited by the pad 32. At the same time, when the pad 32 contacts the rock, it assists the cone tooth block 34 to crush the rock.

[0042] In the connecting mechanism 1, it is connected to the drill shaft of the drilling rig through the connecting stud 11, so that the power of the drilling rig is transmitted to the drill bit through the connection of the connecting stud 11. At the same time, the guide groove provides a path for the water to be introduced, so that the water can enter the space between the connecting plate 12 and the support mechanism 2 through the guide groove. At the same time, the annular groove at the bottom of the connecting plate 12 cooperates with the sealing gasket 15, and the outside of the water circulation space is sealed with the support mechanism 2. After the water is introduced, it flows downward under the dual action of its own gravity and water pressure, passes through the sieve cover 16, and filters the water through the sieve cover 16 to prevent large hard objects from blocking the water spray path.

[0043] In the supporting mechanism 2, by cooperating with the connecting mechanism 1, when connected, the inner convex ring 22 is stuck in the annular groove of the connecting disk 12 and squeezes the sealing gasket 15. While positioning the connection position, it increases the tortuosity of the path for the internal water to overflow outward, thereby improving the sealing effect. After the water passes through the sieve cover 16, it diffuses inside the fixed disk 21 and is sprayed out by the inner spray hole 24, the oblique spray groove 25, the side spray groove 26 and the outer spray groove 27. When spraying, the inner spray hole 24 cooperates with the outer spray groove 27 to vertically impact the rock and soil crushing surface downward, impacting the soil and the crushed rock debris, exposing the unbroken rock and contacting the gear mechanism 3 for crushing. At the same time, the oblique spray groove 25 cooperates with the side spray groove 26 to impact the gear mechanism 3, and clean the soil adhering to its surface during the rotation of the gear mechanism 3.

[0044] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A roller drill bit with an anti-sticking structure, characterized in that: include: A connecting mechanism (1), the connecting mechanism (1) is used to connect a drilling rig shaft rod so that the drilling rig power is transmitted to the drill bit; A supporting mechanism (2), wherein the supporting mechanism (2) is mounted on the bottom of the connecting mechanism (1), and a seal is formed between the supporting mechanism (2) and the connecting mechanism (1); A gear mechanism (3), the gear mechanism (3) being evenly mounted on the bottom of the support mechanism (2), and the gear mechanism (3) being used to break rock and soil during drilling; The tooth gear mechanism (3) comprises a fixed shaft (31), the fixed shaft (31) being fixedly mounted on the inner wall of the support mechanism (2), and a conical tooth gear (35) being rotatably mounted on the outer side of the fixed shaft (31), the outer side of the conical tooth gear (35) being a conical surface, and a convex plate (33) being fixedly mounted on the conical surface of the conical tooth gear (35), the convex plates (33) being evenly mounted along the center position of the axis of the conical tooth gear (35), a spacer (32) being fixedly mounted on the outer side of the conical tooth gear (35), the spacer (32) being located between the convex plates (33), a conical tooth block (34) being fixedly mounted on the outer side of the convex plates (33), and the outer diameter of the conical tooth block (34) gradually decreasing as it gradually moves away from the convex plates (33).

2. The roller drill bit with an anti-sticking structure according to claim 1, characterized in that: The distance between the end of the conical tooth block (34) away from the conical tooth wheel (35) and the outer side of the conical tooth wheel (35) is greater than the distance between the end of the spacer (32) away from the conical tooth wheel (35) and the outer side of the conical tooth wheel (35), and the side of the conical tooth wheel (35) close to the support mechanism (2) is a convex arc surface at the center.

3. The roller drill bit with an anti-sticking structure according to claim 2, characterized in that: An axis groove is formed on the inner wall of the cone gear (35), and bearings (36) are fixedly mounted on both ends of the axis groove of the cone gear (35), and the inner wall of the bearing (36) contacts the outer side of the fixed shaft (31).

4. The roller drill bit with an anti-sticking structure according to claim 3, characterized in that: An arc convex block (37) is fixedly installed at the center of the shaft groove of the cone gear (35). The arc convex block (37) is evenly installed along the center of the cone gear (35), and the opposite surface of the arc convex block (37) contacts the outer side of the fixed shaft (31).

5. The roller drill bit with an anti-sticking structure according to claim 4, characterized in that: The connecting mechanism (1) comprises a connecting stud (11), the outer side of the connecting stud (11) is provided with a thread, a guide groove is provided at the center position of the top of the connecting stud (11), and a connecting plate (12) is fixedly mounted on the bottom of the connecting stud (11).

6. The roller drill bit with an anti-sticking structure according to claim 5, characterized in that: Screw holes are evenly formed on the outside of the connecting plate (12), and bolts (13) are threadedly connected to the screw holes of the connecting plate (12). The connecting plate (12) is fixedly connected to the support mechanism (2) via the bolts (13).

7. The roller drill bit with an anti-sticking structure according to claim 6, characterized in that: The bottom of the connecting disk (12) is provided with an annular groove, and a sealing gasket (15) is clamped at the annular groove of the connecting disk (12). A snap ring (14) is fixedly mounted on the bottom of the connecting disk (12), and a sieve cover (16) is fixedly mounted on the bottom of the snap ring (14). The sieve cover (16) is located on the inner side of the sealing gasket (15).

8. The roller drill bit with an anti-sticking structure according to claim 7, characterized in that: The support mechanism (2) comprises a fixed disk (21), an inner convex ring (22) is fixedly mounted on the top of the fixed disk (21), the inner convex ring (22) is adapted to the annular groove of the connecting disk (12), and the top of the inner convex ring (22) is tightly fitted with the bottom of the sealing gasket (15).

9. The roller drill bit with an anti-sticking structure according to claim 8, characterized in that: An axial hole plate (23) is fixedly mounted on the bottom of the fixed disk (21). The axial hole plate (23) is evenly mounted along the center of the fixed disk (21), and the opposite surface of the axial hole plate (23) is a curved surface with a concave center position. The curved surface of the axial hole plate (23) is adapted to the curved surface of the conical gear (35).

10. The roller drill bit with an anti-sticking structure according to claim 9, characterized in that: An inner spray hole (24) is provided at the center of the bottom of the fixed disk (21), and oblique spray slots (25) are evenly provided on the bottom of the fixed disk (21), and the oblique spray slots (25) are inclined inward from bottom to top. Bumps are evenly provided at the edge of the bottom of the fixed disk (21), and the bumps are located between the shaft hole plates (23). An outer spray slot (27) is provided at the bottom of the bumps of the fixed disk (21), and side spray slots (26) are provided on the opposite surfaces of the bumps.

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