Automatic anti-sticking device for drill bit

Abstract

The present application provides a kind of automatic anti jamming device of drill bit, including drill bit body, connecting drill rod, detection module, first protection mechanism and secondary protection mechanism, drill bit body is connected in the one end of connecting drill rod, annular part is installed at the junction of drill bit body and connecting drill rod, first protection mechanism is installed in annular part, first protection mechanism is used to produce first vibration to carry out preliminary treatment to the rock layer blocked around drill bit body, secondary protection mechanism is installed in first protection mechanism, detection module is installed on annular part, for detecting the stagnation time of drill bit body and the friction of each position on the surface of first protection mechanism, secondary protection mechanism is used to produce secondary vibration to carry out secondary treatment to the rock layer blocked around drill bit body when the stagnation time and the friction of each position reach preset requirement.The present application is convenient to take out downhole drill bit quickly, avoids being stuck, and plays a protective role to drill bit body simultaneously.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of oil drilling, in particular to an automatic anti-sticking device for drill bit. BACKGROUND

[0002] In the drilling process, the drill bit is the main tool for breaking rock, and the wellbore is formed by breaking rock with the drill bit. The formation of a wellbore is good or bad, and the length of time used is related to the characteristics of the rock stratum drilled and the performance of the drill bit itself, but more related to the degree of matching between the drill bit and the stratum. The reasonable selection of the drill bit plays an important role in improving the drilling speed and reducing the comprehensive cost of drilling. The drill bit is one of the important tools for oil drilling work. Whether the drill bit is suitable for the rock properties and its quality is good or bad plays a very important role in the selection of drilling technology, especially in the drilling quality, drilling speed and drilling cost. PDC drill bit is a widely used rock breaking tool in the current oil and gas exploration and development industry, which effectively improves the mechanical drilling tool and shortens the drilling cycle.

[0003] In the drilling engineering of oil, mine, geological exploration and the like, the drill bit needs to be taken out after the drilling is completed, but the drill bit is difficult to take out due to the collapse of the rock stratum or the accumulation of the soil during the taking-out process. When the drill bit is stuck, forced taking-out can easily cause damage to the drill bit. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide an automatic anti-sticking device for drill bit, which solves the problem of difficulty in taking out the near drill bit after the drilling is completed in the prior art.

[0005] To achieve the above-mentioned purposes and other related purposes, the present application provides an automatic anti-sticking device for drill bit, which comprises a drill bit body, a connecting drill rod, a detection module, a primary protection mechanism and a secondary protection mechanism. The drill bit body is connected to one end of the connecting drill rod. An annular member is installed at the connection between the drill bit body and the connecting drill rod. The primary protection mechanism is installed inside the annular member. The primary protection mechanism is used to produce a primary vibration to preliminarily process the rock stratum blocked around the drill bit body. The secondary protection mechanism is installed inside the primary protection mechanism. The detection module is installed on the annular member and is used to detect the stagnation time of the drill bit body and the friction force of each position on the surface of the primary protection mechanism. The secondary protection mechanism is used to produce a secondary vibration to secondarily process the rock stratum blocked around the drill bit body when the stagnation time and the friction force of each position meet the preset requirements.

[0006] Optionally, the annular component has a fixing groove on its surface. The primary protection mechanism includes multiple ejector shafts that penetrate the fixing groove. One end of the ejector shaft located outside the annular component is connected to a pressing plate. An outer groove is provided outside the fixing groove. A protrusion is provided on the side of the pressing plate near the fixing groove. The protrusion matches the size of the outer groove. A primary vibrating element is installed on the inner wall of the pressing plate. A first hydraulic rod is connected to one end of the ejector shaft located inside the annular component. A fixing cylinder is installed on the outer wall of the fixed end of the first hydraulic rod. A push switch is connected to one end of the fixing cylinder near the ejector shaft. A starter plate is also installed on the ejector shaft. The push switch is electrically connected to the primary vibrating element. When the pressing plate is pressed, the ejector shaft presses the first hydraulic rod to press the push switch through the starter plate.

[0007] Optionally, the primary vibrating component includes multiple electric push rods installed inside the annular component. The surface of the annular component is provided with a movable groove that matches the electric push rod. The electric push rod passes through the movable groove, and a vibrating head is connected to one end of the electric push rod near the outside. A vibrator is installed inside the vibrating head. An upper guide rod and a lower guide rod are respectively connected to both ends of the vibrator. A scraper ball is installed at the end of the upper guide rod and the end of the lower guide rod.

[0008] Optionally, the surface of the scraper ball is provided with a plurality of protrusions, and each of the protrusions is provided with a wear-resistant head, wherein the end of the wear-resistant head is tapered.

[0009] Optionally, an annular sealing gasket is provided on the side surface of the vibrating head near the movable groove, so that when the electric push rod retracts, the annular sealing gasket on the surface of the vibrating head seals and fits tightly against the movable groove.

[0010] Optionally, the distance between the outer surface of the pressing plate and the outer surface of the annular part is greater than the thickness of the protrusion.

[0011] Optionally, the secondary protection mechanism includes a rotary motor installed inside the pressing plate. The output shaft of the rotary motor is connected to a transmission component, which is driven by multiple rotary shafts penetrating the surface of the pressing plate. The ends of the rotary shafts are connected to a rotator located on the surface of the pressing plate.

[0012] Optionally, the rotator includes a central column, the surface of which is uniformly connected with a plurality of chromium alloy plates, and the surface of which is uniformly provided with a plurality of through holes.

[0013] Optionally, the detection module includes multiple friction force detection units, a dwell time detection unit, a start unit, and a controller installed on the surface of the pressing plate. The friction force detection unit is used to detect the friction force on the surface of the pressing plate and outputs a first start signal when the friction force is greater than a first threshold. The dwell time detection unit is used to detect the dwell time of the drill bit body and outputs a second start signal when the dwell time is greater than a second threshold. Both the friction force detection unit and the dwell time detection unit are electrically connected to the start unit. The start unit is electrically connected to the controller. After receiving the first start signal and the second start signal, the start unit sends a third start signal to the controller. The controller starts the rotary motor according to the third start signal.

[0014] Optionally, the friction detection unit includes a plurality of friction sensors disposed on the surface of the pressing plate and the surface of the annular component.

[0015] As described above, the automatic drill bit anti-jamming device of the present invention has the following beneficial effects:

[0016] When the drill bit is removed from the well, if it gets stuck, pressure is applied to the annular component so that the primary protection mechanism can vibrate the rock formation around the drill bit, allowing it to be removed smoothly. The entire process can be achieved using only a mechanical squeezing method, which simplifies the structure and reduces power consumption. After the primary protection mechanism is activated, the status of the drill bit is monitored by a detection module. If the drill bit is still stuck, the secondary protection mechanism is activated to vibrate the rock formation around the drill bit, facilitating the rapid removal of the drill bit and preventing it from getting stuck. This also protects the drill bit itself. Attached Figure Description

[0017] Figure 1 The diagram shown is a cross-sectional structural schematic of the ring component in the automatic anti-jamming device for drill bits of the present invention.

[0018] Figure 2 The diagram shown is a structural schematic of the secondary protection mechanism in the automatic anti-jamming device for drill bits of the present invention.

[0019] Figure 3 The diagram shown is a cross-sectional structural schematic of the rotator in the automatic anti-jamming device for drill bits of the present invention.

[0020] Figure 4 The diagram shown is a cross-sectional view of the scraper ball in the automatic anti-jamming device for drill bits of the present invention.

[0021] Figure 5 The diagram shown is an overall structural schematic of the automatic anti-jamming device for drill bits according to the present invention.

[0022] Figure 6 The diagram shown is a structural block diagram of the detection module in the automatic drill bit anti-jamming device of the present invention.

[0023] Label Explanation

[0024] 1. Drill bit body;

[0025] 2. Connect the drill rod;

[0026] 3. Detection module;

[0027] 4. Level 1 protection agency;

[0028] 5. Secondary protection agency;

[0029] 6. Ring-shaped component;

[0030] 31. Friction force detection unit;

[0031] 32. Stasis Time Detection Unit;

[0032] 33. Start-up unit;

[0033] 34. Controller;

[0034] 41. Ejector shaft;

[0035] 42. Press plate;

[0036] 43. Protruding parts;

[0037] 44. Level 1 vibrating component;

[0038] 45. First hydraulic rod;

[0039] 46. ​​Fixed cylinder;

[0040] 47. Press the switch;

[0041] 48. Starter panel;

[0042] 51. Rotary electric motor;

[0043] 52. Transmission components;

[0044] 53. Rotation axis;

[0045] 54. Rotator;

[0046] 541. Central column;

[0047] 542. Chromium alloy plate;

[0048] 543. Through hole;

[0049] 61. Fix the groove;

[0050] 62. External groove;

[0051] 63. Movable slot;

[0052] 441. Electric linear actuator;

[0053] 442. Vibrating head;

[0054] 443. Vibrator;

[0055] 444. Upper guide rod;

[0056] 445. Lower guide rod;

[0057] 446. Scraper ball;

[0058] 447. Protrusion;

[0059] 448. Wear-resistant head. Detailed Implementation

[0060] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0061] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0062] See Figure 1 and Figure 2 The automatic drill bit anti-jamming device provided in this embodiment applies pressure to the annular component when the drill bit gets stuck during extraction from the well. This pressure causes the primary protection mechanism to vibrate the surrounding rock formations, facilitating the smooth extraction of the drill bit. The entire process requires only a mechanical squeezing action, resulting in a simple structure and reduced power consumption. After the primary protection mechanism activates, a detection module monitors the drill bit's status. If the drill bit remains stuck, the secondary protection mechanism is activated to vibrate the surrounding rock formations, facilitating rapid extraction and preventing jamming. This also protects the drill bit itself.

[0063] like Figure 1As shown in one embodiment, an automatic drill bit anti-jamming device of the present invention includes a drill bit body 1, a connecting drill rod 2, a detection module 3, a primary protection mechanism 4, and a secondary protection mechanism 5. The drill bit body 1 is connected to one end of the connecting drill rod 2. An annular component 6 is installed at the connection between the drill bit body 1 and the connecting drill rod 2. The primary protection mechanism 4 is installed inside the annular component 6. The primary protection mechanism 4 is used to generate a primary vibration to perform preliminary treatment on the rock layer blocking the drill bit body 1. The secondary protection mechanism 5 is installed inside the primary protection mechanism 4. The detection module 3 is installed on the annular component 6 and is used to detect the dwell time of the drill bit body 1 and the friction force at various positions on the surface of the primary protection mechanism 4. The secondary protection mechanism 5 is used to generate a secondary vibration to perform secondary treatment on the rock layer blocking the drill bit body 1 when the dwell time and the friction force at various positions reach a preset requirement.

[0064] In this embodiment, an annular component 6 is installed at the connection between the drill bit body 1 and the connecting drill rod 2. Vibration is achieved through the primary protection mechanism 4 and the secondary protection mechanism 5 inside the annular component 6. When the drill bit body 1 is removed after drilling is completed, if the drill bit body 1 gets stuck and cannot be pulled out, the primary protection mechanism 4 generates a primary vibration to facilitate the removal of the entire drill bit body 1. During the operation of the primary protection mechanism 4, the detection module 3 monitors the frictional force at various positions on the surface of the primary protection mechanism 4 in real time. If the drill bit body 1 still cannot be removed after the primary protection mechanism 4 is activated, the secondary protection mechanism 5 is automatically activated. In conjunction with the primary vibration of the primary protection mechanism 4, it vibrates the rock strata around the drill bit body 1, loosening the rock strata around the drill bit body 1 and facilitating the removal of the entire drill bit body 1. This effectively prevents the drill bit body 1 from getting stuck inside the well and being damaged during removal.

[0065] In some embodiments, the annular component 6 has a fixing groove 61 on its surface. The primary protection mechanism 4 includes a plurality of ejector shafts 41 that penetrate the interior of the fixing groove 61. One end of the ejector shaft 41 located outside the annular component 6 is connected to a pressing plate 42. An outer groove 62 is provided outside the fixing groove 61. A protrusion 43 is provided on the side of the pressing plate 42 near the fixing groove 61. The protrusion 43 matches the size of the outer groove 62. A primary vibrator 44 is installed on the inner wall of the pressing plate 42. One end of the ejector shaft 41 located inside the annular component 6 is connected to a first hydraulic rod 45. A fixed cylinder 46 is installed on the outer wall of the fixed end of the first hydraulic rod 45. A push switch 47 is connected to one end of the fixed cylinder 46 near the ejector shaft 41. A starter plate 48 is also installed on the ejector shaft 41. The push switch 47 is electrically connected to the first-stage vibrating component 44. When the press plate 42 is squeezed, the ejector shaft 41 squeezes the first hydraulic rod 45 to press the push switch 47 through the starter plate 48.

[0066] In this embodiment, the primary protection mechanism 4 is connected to the first hydraulic rod 45 inside the annular part 6 via the ejector shaft 41 installed inside the annular part 6. This allows the ejector shaft 41 to push the first hydraulic rod 45 when it is subjected to compression, so that the press switch 47 can be activated by the starter plate 48. The press switch 47 then activates the primary vibrator 44 to vibrate the rock strata around the drill bit body 1, so that the drill bit can be removed and prevented from getting stuck.

[0067] Specifically, since the ejector shaft 41 is connected to a pressing plate 42 at one end outside the annular component 6, when the drill bit body 1 and the connecting drill rod 2 are inside the well, during the process of removing the drill bit body 1, when the drill bit body 1 is stuck by the rock strata around it, the pressing plate 42 outside the annular component 6 is squeezed by the surrounding rock strata during the lifting process, thus causing the pressing plate 42 to exert a squeezing effect on the ejector shaft 41. When the squeezing effect of the pressing plate 42 on the ejector shaft 41 exceeds the thrust threshold of the first hydraulic rod 45, the first hydraulic rod 45 is pushed and retracted under the action of the ejector shaft 41, so that the ejector shaft 41 continuously approaches the first hydraulic rod 45. Then, the pressing switch 47 on the fixed cylinder 46 of the first hydraulic rod 45 is pressed by the starting plate 48 on the ejector shaft 41 to start the entire first-stage vibrating component 44 to vibrate, thereby loosening the rock strata around the drill bit body 1, so that the entire drill bit can be removed.

[0068] Furthermore, since an outer groove 62 is provided outside the fixing groove 61 on the surface of the annular part 6, and a protrusion 43 is provided on the side of the pressing plate 42 near the fixing groove 61, the protrusion 43 matches the size of the outer groove 62. Under normal conditions, the pressing plate 42 connected to the end of the ejector shaft 41 is engaged with the outer groove 62 through the protrusion 43 on its surface, so that the pressing plate 42 and the annular part 6 are combined to form a whole. When the drill bit body 1 is drilling, it can effectively prevent mud and sand from entering, and play a good protective role.

[0069] In some other embodiments, the distance between the outer surface of the pressing plate 42 and the outer surface of the annular member 6 is greater than the thickness of the protrusion 43, so that when the pressing plate 42 is not being squeezed, the surface of the pressing plate 42 is in a convex state relative to the surface of the annular member 6, so that when the drill bit body 1 is stuck, the pressing plate 42 can quickly withstand the squeezing action to activate the first-level protection mechanism.

[0070] In some other embodiments, the primary vibrating element 44 includes a plurality of electric push rods 441 installed inside the annular element 6. The surface of the annular element 6 is provided with a movable groove 63 that matches the electric push rods 441. The electric push rods 441 pass through the interior of the movable groove 63, and a vibrating head 442 is connected to one of the outer ends of the electric push rods 441. A vibrator 443 is installed inside the vibrating head 442. An upper guide rod 444 and a lower guide rod 445 are respectively connected to the two ends of the vibrator 443. A scraper ball 446 is installed at the end of the upper guide rod 444 and the end of the lower guide rod 445.

[0071] When the primary vibrator 44 is activated, the electric push rod 441 and the vibrating head 442 are also activated. The electric push rod 441 slides back and forth inside the movable groove 63 inside the annular part 6, and the vibrating head 442 also vibrates accordingly. Since the upper guide rod 444 and the lower guide rod 445 at both ends of the vibrating head 442 are close to the ends of the pressing plate 42, when the vibrating head 442 is vibrating, the upper guide rod 444 and the lower guide rod 445 at both ends of the vibrating head 442 transmit the vibration to the ends of the pressing plate 42, thereby accelerating the loosening of the rock strata around the pressing plate 42, which is beneficial for quick removal when the drill bit body 1 is stuck.

[0072] Furthermore, when the vibration of the vibrator 443 is transmitted through the upper guide rod 444 and the lower guide rod 445 respectively, the scraper ball 446 located at the end of the upper guide rod 444 and the end of the lower guide rod 445 also vibrates accordingly. The scraper ball 446 accelerates the vibration of the rock strata around the drill bit body 1, thereby accelerating the rock strata to fall.

[0073] In some embodiments, the surface of the scraper ball 446 is provided with a plurality of protrusions 447, and each of the protrusions 447 is provided with a wear-resistant head 448 at its end, and the end of the wear-resistant head 448 is tapered.

[0074] In this embodiment, when the scraper ball 446 vibrates, the vibration effect of the scraper ball 446 on the rock strata is accelerated by the protrusions 447 of the multiple conical structures, thereby accelerating the removal process of the drill bit body 1.

[0075] Furthermore, the wear-resistant head 448 at the end of the protrusion 447 can play a wear-resistant role and prevent the scraper ball 446 from being damaged.

[0076] In some embodiments, an annular sealing gasket 449 is provided on the side surface of the vibrating head 442 near the movable groove 63. When the electric push rod 441 retracts, the annular sealing gasket 449 on the surface of the vibrating head 442 is sealed and fitted with the movable groove 63.

[0077] In this embodiment, during normal use, the vibrating head 442 is sealed to the movable groove 63 on the surface of the annular part 6 through the sealing gasket 449, ensuring that the vibrating head 442 and the movable groove 63 are sealed, thus protecting the annular part 6.

[0078] In some embodiments, the secondary protection mechanism 5 includes a rotary motor 51 installed inside the pressing plate 42. The output shaft of the rotary motor 51 is connected to a transmission member 52. The transmission member 52 is connected to a plurality of rotating shafts 53 that pass through the surface of the pressing plate. The ends of the rotating shafts 53 are connected to a rotator 54 located on the surface of the pressing plate.

[0079] If the drill bit body 1 still cannot be removed after the primary protection mechanism 4 is activated, the detection module 3 detects the status of the drill bit body 1 and activates the secondary protection mechanism 5. Under the action of the rotary motor 51, multiple rotary shafts 53 drive the rotator 54 to rotate, vibrating and loosening the soil from the middle position of the pressing plate 42, causing the rock layer located in the middle position of the pressing plate 42 to loosen and fall off. In conjunction with the vibrating head 442, the end of the pressing plate 42 is vibrated, thereby accelerating the fall off of the rock layer around the entire pressing plate 42, making it easier to remove the stuck drill bit body 1.

[0080] In some embodiments, the rotator 54 includes a central column 541, on the surface of which a plurality of chromium alloy plates 542 are uniformly connected, and on the surface of which a plurality of through holes 543 are uniformly provided.

[0081] When the rotator 54 rotates, the rotation of multiple chromium alloy plates 542 improves the loosening ability of the rock layer. Moreover, the through holes 543 provided on the chromium alloy plates 542 not only reduce the weight of the chromium alloy plates 542, but also allow the loosened rock fragments to pass through and fall off, avoiding accumulation and affecting the rotation effect of the rotator 54.

[0082] In some embodiments, the detection module 3 includes a plurality of friction force detection units 31, a dwell time detection unit 32, a start unit 33, and a controller 34 mounted on the surface of the pressing plate 42. The friction force detection unit 31 is used to detect the friction force on the surface of the pressing plate 42 and outputs a first start signal when the friction force is greater than a first threshold. The dwell time detection unit 32 is used to detect the dwell time of the drill bit body 1 and outputs a second start signal when the dwell time is greater than a second threshold. The friction force detection unit 31 and the dwell time detection unit 32 are both electrically connected to the start unit 33. The start unit 33 is electrically connected to the controller 34. After receiving the first start signal and the second start signal, the start unit 33 sends a third start signal to the controller 34. The controller 34 starts the rotary motor 51 according to the third start signal.

[0083] When the primary protection mechanism 4 activates to vibrate the area around the drill bit body 1, if the friction detection unit 31 of the detection module 3 detects that the friction force on the surface of the pressing plate 42 is still greater than the first threshold, it indicates that the drill bit body 1 is still stuck. Therefore, it outputs the first start signal. Then, the stagnation time detection unit 32 detects the stagnation time of the entire drill bit body 1 after the activation of the primary protection mechanism 4. If the stagnation time exceeds the second threshold, it indicates that the drill bit body 1 is still stuck. Therefore, it outputs the second start signal. Then, the start unit 33 determines that the secondary protection mechanism needs to be activated based on the first and second start signals. It generates a third start signal and sends it to the controller 34, so that the controller 34 can start the rotary motor 51 to complete the activation process of the secondary protection mechanism 5. Similarly, if the friction detection unit 31 detects that the friction force on the surface of the pressing plate 42 is less than the threshold, or if the stagnation detection unit 3 detects that the stagnation time of the drill bit body 1 is less than the second threshold, it indicates that the drill bit body 1 is not stuck. Therefore, the start unit 33 generates a shut-off signal to the controller 34, and the controller 34 controls the rotary motor 51 to stop rotating to save power.

[0084] In some embodiments, the friction force detection unit 51 includes a plurality of friction force sensors (not shown in the figure) disposed on the surface of the pressing plate 42 and the surface of the annular member 6. By disposing of friction force sensors on both the pressing plate 42 and the annular member 6, it is convenient to detect friction force at different locations, avoiding inaccurate detection at a single location. This is especially beneficial for cases where the inner wall of a well is uneven, thereby improving the accuracy of friction force detection results.

[0085] In summary, the automatic drill bit anti-jamming device of the present invention, when the drill bit body is being removed from the well, applies pressure to the annular component when the drill bit gets stuck. This causes the primary protection mechanism to vibrate the surrounding rock formation, facilitating the smooth removal of the drill bit. The entire process requires only a mechanical squeezing action, resulting in a simple structure and reduced power consumption. After the primary protection mechanism activates, a detection module monitors the drill bit's status. If the drill bit remains stuck, the secondary protection mechanism is activated to vibrate the surrounding rock formation, facilitating rapid removal of the drill bit and preventing it from getting stuck. This also protects the drill bit body. Therefore, the present invention effectively overcomes the various shortcomings of existing technologies and has high industrial applicability.

[0086] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An automatic anti-jamming device for drill bits, characterized in that, The system includes a drill bit body, a connecting drill rod, a detection module, a primary protection mechanism, and a secondary protection mechanism. The drill bit body is connected to one end of the connecting drill rod. An annular component is installed at the connection between the drill bit body and the connecting drill rod. The primary protection mechanism is installed inside the annular component and is used to generate primary vibration to preliminarily treat the rock strata obstructing the drill bit body. The secondary protection mechanism is installed inside the primary protection mechanism. The detection module is installed on the annular component and is used to detect the dwell time of the drill bit body and the friction force at various positions on the surface of the primary protection mechanism. The secondary protection mechanism is used to generate secondary vibration to perform secondary treatment on the rock strata obstructing the drill bit body when the dwell time and the friction force at various positions reach preset requirements. The annular component has a fixing groove on its surface. The primary protection mechanism includes multiple ejector shafts that penetrate the fixing groove. One end of the ejector shaft located outside the annular component is connected to a pressing plate. An outer groove is provided outside the fixing groove. A protrusion is provided on the side of the pressing plate near the fixing groove. The protrusion matches the size of the outer groove. A primary vibrator is installed on the inner wall of the pressing plate. A first hydraulic rod is connected to one end of the ejector shaft located inside the annular component. A fixing cylinder is installed on the outer wall of the fixed end of the first hydraulic rod. A push switch is connected to one end of the fixing cylinder near the ejector shaft. A starter plate is also installed on the ejector shaft. The push switch is electrically connected to the primary vibrator. When the pressing plate is pressed, the ejector shaft presses the first hydraulic rod to press the push switch through the starter plate. The secondary protection mechanism includes a rotary motor installed inside the pressing plate. The output shaft of the rotary motor is connected to a transmission component. The transmission component is connected to multiple rotary shafts that penetrate the surface of the pressing plate. The ends of the rotary shafts are connected to a rotator located on the surface of the pressing plate.

2. The automatic drill bit anti-jamming device according to claim 1, characterized in that, The primary vibrating component includes multiple electric push rods installed inside the annular component. The surface of the annular component is provided with a movable groove that matches the electric push rod. The electric push rod passes through the movable groove, and a vibrating head is connected to one end of the electric push rod near the outside. A vibrator is installed inside the vibrating head. An upper guide rod and a lower guide rod are respectively connected to both ends of the vibrator. A scraper ball is installed at the end of the upper guide rod and the end of the lower guide rod.

3. The automatic drill bit anti-jamming device according to claim 2, characterized in that, The scraper ball has multiple protrusions on its surface, and each of the protrusions has a wear-resistant head attached to its end, with the end of the wear-resistant head being tapered.

4. The automatic drill bit anti-jamming device according to claim 2, characterized in that, An annular sealing gasket is provided on the side surface of the vibrating head near the movable groove. When the electric push rod retracts, the annular sealing gasket on the surface of the vibrating head seals against the movable groove.

5. The automatic drill bit anti-jamming device according to claim 1, characterized in that, The distance between the outer surface of the pressing plate and the outer surface of the annular part is greater than the thickness of the protrusion.

6. The automatic drill bit anti-jamming device according to claim 1, characterized in that, The rotator includes a central column, on the surface of which multiple chromium alloy plates are uniformly connected, and multiple through holes are uniformly arranged on the surface of the chromium alloy plates.

7. The automatic drill bit anti-jamming device according to claim 1, characterized in that, The detection module includes multiple friction force detection units, a dwell time detection unit, a start unit, and a controller installed on the surface of the pressing plate. The friction force detection unit is used to detect the friction force on the surface of the pressing plate and outputs a first start signal when the friction force is greater than a first threshold. The dwell time detection unit is used to detect the dwell time of the drill bit body and outputs a second start signal when the dwell time is greater than a second threshold. Both the friction force detection unit and the dwell time detection unit are electrically connected to the start unit. The start unit is electrically connected to the controller. After receiving the first start signal and the second start signal, the start unit sends a third start signal to the controller. The controller starts the rotary motor according to the third start signal.

8. The automatic drill bit anti-jamming device according to claim 7, characterized in that, The friction force detection unit includes multiple friction force sensors disposed on the surface of the pressing plate and the surface of the annular component.

Images