An impact rock breaking device for drilling engineering

Abstract

The application relates to an impact rock breaking device for drilling engineering, which comprises a driving assembly capable of rotating after drilling fluid flows, an impact assembly for generating impact vibration in an axial direction, and an adjusting assembly. The impact assembly comprises a conversion piece connected with the driving assembly, and an impact piece abutting against the conversion piece. The conversion piece can move the impact piece in the axial direction when rotating in the circumferential direction with the driving assembly. The adjusting assembly comprises a sliding cylinder configured to enable pressure accumulation of an adjusting ball input from a wellhead, an adjusting cylinder forming circumferential limiting with the sliding cylinder, and an adjusting seat connected with the impact piece. The sliding cylinder can move downward in the axial direction relative to the adjusting cylinder to adjust the distance between the adjusting cylinder and the adjusting seat after the pressure accumulation of the adjusting ball, so that the distance between the impact piece and the conversion piece is increased or decreased. In this way, the impact amplitude generated by the impact rock breaking device can be changed underground to match the lithology of underground rocks, so that the rock breaking efficiency is improved and the construction cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of impact rock breaking technology, and more specifically to an impact rock breaking device for drilling engineering. Background Technology

[0002] Currently, percussion drilling technology can effectively improve drilling speed. This technology converts the hydraulic energy of the drilling fluid into the impact energy of the drill bit, thereby changing the rock-breaking method of conventional drill bits and effectively improving the rock-breaking efficiency of the drill bit. Significant progress has been made in the theory, structural design, and application methods of percussion drilling technology. Compared with conventional drilling technology, percussion drilling technology can significantly increase drilling speed.

[0003] In existing technologies, the hydraulic energy of drilling fluid is converted into the impact energy of the percussion drill bit through a downhole percussion rock-breaking device. Because the lithology of different rock layers varies, the percussion drill bit needs to use different impact frequencies and amplitudes to break rocks of different types, thereby maximizing rock-breaking efficiency. However, existing percussion rock-breaking devices struggle to change the amplitude of the percussion drill bit downhole. Summary of the Invention

[0004] In view of the above-mentioned problems existing in the prior art, the present invention provides an impact rock breaking device that can change the amplitude of the impact drill bit downhole.

[0005] The technical solution adopted by this invention to solve its technical problem is: to provide an impact rock-breaking device for drilling engineering, comprising,

[0006] The drive assembly is configured to rotate after the drilling fluid flows through it;

[0007] An impact assembly for generating axial impact vibrations, the impact assembly including a converter connected to the drive assembly, and an impact member interacting with the converter, the converter being configured to move the impact member axially when rotated circumferentially with respect to the drive assembly; and

[0008] The adjustment assembly includes a sliding cylinder configured to withstand pressure via an adjustment ball inserted from the wellhead, an adjustment cylinder forming a circumferential limit with the sliding cylinder, and an adjustment seat connected to the impact member.

[0009] The sliding cylinder is configured to move axially downward relative to the adjusting cylinder after being pressurized, so as to adjust the distance between the adjusting cylinder and the adjusting seat, thereby increasing or decreasing the distance between the impact member and the conversion member.

[0010] Furthermore, the inner wall of the adjusting cylinder is provided with a plurality of adjusting grooves, the upper end of which is closed and the lower end is open in the axial direction, and the axial length increases or decreases in the circumferential direction. The adjusting seat is provided with an adjusting member extending upward in the axial direction. The adjusting member is configured to be inserted into each of the adjusting grooves in the circumferential direction in sequence to adjust the distance between the adjusting seat and the adjusting cylinder.

[0011] Furthermore, the plurality of adjustment slots include a first adjustment slot and a second adjustment slot spaced apart from the first adjustment slot. An adjustment tooth is provided between the first adjustment slot and the second adjustment slot. The adjustment tooth is configured to guide the adjustment member into the second adjustment slot after the adjustment member leaves the first adjustment slot.

[0012] Furthermore, the lower end of the sliding cylinder is provided with a plurality of pushing teeth, which are configured to push the adjusting member away from the first adjusting groove when the sliding cylinder moves axially downward, and then guide the adjusting member to abut against the adjusting teeth so that the adjusting member can be guided by the adjusting teeth.

[0013] Furthermore, the adjusting seat is provided with an adjusting rod that connects to the impact member. The adjusting rod is rotatably connected to the adjusting seat, so that the adjusting rod can only move in the axial direction during the process of the adjusting member being inserted into each of the adjusting slots in the circumferential direction.

[0014] Furthermore, a limiting groove is provided on the inner wall of the adjusting cylinder, and a limiting part is provided on the sliding cylinder extending into the limiting groove, so that the adjusting cylinder and the sliding cylinder form a circumferential limiting. The limiting part is configured to move the sliding cylinder to the lowest point when it moves downward along the axial direction to the lower end of the limiting groove.

[0015] Furthermore, a first elastic member is abutted below the adjusting seat. The first elastic member is configured to push the adjusting seat upward after the sliding cylinder moves axially downward to the lowest point and the adjusting ball passes through the sliding cylinder, thereby causing the adjusting member to push the sliding cylinder upward.

[0016] Furthermore, an elastic pressure block is installed on the inner wall of the sliding cylinder. The pressure block is configured to engage with the adjusting ball to apply pressure, and to undergo elastic deformation under the pressure after the sliding cylinder moves to its lowest point, so as to allow the adjusting ball to pass through the sliding cylinder.

[0017] Furthermore, the adjustment assembly also includes a ball bag disposed below the adjustment seat, the ball bag being configured to receive an adjustment ball passing through the through-hole of the sliding cylinder and the adjustment seat, and allowing the drilling fluid to continue flowing downward.

[0018] Furthermore, the lower end of the conversion member is configured as an inclined first abutment surface, the first abutment surface having a first point close to the impact member, and the upper end of the impact member is configured as an inclined second abutment surface, the first point being configured to slide along the edge of the second abutment surface during the circumferential rotation of the conversion member, so that the impact member can move in the axial direction.

[0019] Furthermore, the edge of the second abutment surface has a second point close to the impact member and a third point away from the impact member, and the impact member is also abutted by a second elastic member, which is configured to push the impact member upward as the first point moves from the second point to the third point.

[0020] Furthermore, the adjustment component is configured to adjust the distance between the impact member and the conversion member, such that the first point can only abut against the edge of the second point of the second contact surface, so that the movement distance of the impact member is less than the axial distance between the second point and the third point.

[0021] Furthermore, the impact rock-breaking device also includes an installation cylinder, in which the adjustment component, the drive component, and the impact component are arranged in sequence. The installation cylinder and the impact component form a circumferential limit, so that the impact component can only move in the axial direction during the process of sliding along the edge of the second contact surface at the first point.

[0022] The beneficial effects of this invention are as follows: It provides an impact rock-breaking device for drilling engineering, comprising a drive assembly capable of rotating after drilling fluid flows through, an impact assembly for generating impact vibration in the axial direction, and an adjustment assembly. The impact assembly includes a conversion element connected to the drive assembly and an impact member abutting against the conversion element. The conversion element is configured to allow the impact member to move axially when rotating circumferentially with the drive assembly. The adjustment assembly includes a sliding cylinder configured to pressurize an adjustment ball inserted from the wellhead, an adjustment cylinder forming a circumferential limit with the sliding cylinder, and an adjustment seat connected to the impact member. The sliding cylinder is configured to move axially downward relative to the adjustment cylinder after the adjustment ball is pressurized to adjust the distance between the adjustment cylinder and the adjustment seat, thereby increasing or decreasing the distance between the impact member and the conversion element. This allows the impact amplitude generated by the impact rock-breaking device to be changed downhole to match the lithology of the underground rock, thereby improving rock-breaking efficiency and reducing construction costs.

[0023] Furthermore, the inner wall of the adjusting cylinder is provided with several adjusting grooves extending radially outward, and the length of these grooves in the axial direction increases or decreases in the circumferential direction. The adjusting element on the adjusting seat can be sequentially inserted into each adjusting groove in the circumferential direction, thereby changing the distance between the adjusting cylinder and the adjusting seat each time an adjusting ball is inserted. This achieves multi-level adjustment of the impact amplitude of the rock-breaking device, improving its applicability. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 The image shown is a structural cross-sectional view of an impact rock-breaking device used in drilling engineering.

[0026] Figure 2 As shown Figure 1 The image shows a partial enlarged view of section A of the impact rock-breaking device used in drilling engineering, under one condition.

[0027] Figure 3 As shown Figure 2 The image shows a partial enlarged view of section A of the impact rock-breaking device used in drilling engineering, under another condition.

[0028] Figure 4 As shown Figure 2 The image shows a partial enlarged view of section A of the impact rock-breaking device used in drilling engineering, under another condition.

[0029] Figure 5 As shown Figure 1 The image shows a partial enlarged view of section B of the impact rock-breaking device used in drilling engineering, under one condition.

[0030] Figure 6 As shown Figure 2 The image shows a partial enlarged view of section B of the impact rock-breaking device used in drilling engineering, under another condition.

[0031] Figure 7 As shown Figure 1 A partially enlarged view of section C of the impact rock-breaking device used in drilling engineering.

[0032] In the figure, the following reference numerals are used: 100, impact rock breaking device; 101, adjusting ball; 10, mounting cylinder; 11, mounting hole; 12, support component; 13, snap-fit ​​groove; 14, locking seat; 141, sealing component;

[0033] 20. Adjustment assembly; 21. Adjustment cylinder; 211. Limiting groove; 212. Adjustment groove; 212a. First adjustment groove; 212b. Second adjustment groove; 213. Adjustment tooth; 22. Sliding cylinder; 221. Limiting part; 222. Pressing block; 223. Pushing tooth; 23. Adjustment seat; 231. Through hole; 232. Adjustment component; 233. First thrust bearing; 234. First elastic component; 235. Ball bag; 24. Adjustment rod;

[0034] 30. Drive assembly; 31. Limiting sleeve; 32. Second thrust bearing; 33. Drive rod; 34. Impeller; 35. Transmission component; 36. Filter component;

[0035] 40. Impact component; 41. Converter; 411. First contact surface; 412. First point; 42. Impact component; 421. Second contact surface; 422. Second point; 423. Third point; 424. Protrusion; 425. Second elastic component; 426. Snap-fit ​​part; 427. Third thrust bearing; 43. Connector; 44. Joint; 441. Third elastic component; 50. Flow channel; 51. Branch flow channel; 52. Main flow channel. Detailed Implementation

[0036] To make the technical problem to be solved, the technical solution, and the beneficial effects of this invention clearer, the invention will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic structure of the invention, and therefore only shows the components relevant to the invention. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0037] refer to Figure 1 , Figure 5 and Figure 7 As shown, the present invention provides an impact rock-breaking device 100 for drilling engineering, comprising a hollow mounting cylinder 10 with open ends, and an adjusting component 20 for adjusting the impact amplitude, a driving component 30 capable of utilizing the hydraulic energy of drilling fluid, and an impact component 40 for impacting underground rock, arranged sequentially in a downward axial direction within the mounting cylinder 10. Under the pumping action of the pump body at the wellhead, the drilling fluid flows through the mounting cylinder 10, delivering the adjusting ball 101, which is inserted from the wellhead, to the adjusting component 20 within the mounting cylinder 10. The adjusting ball 101 can be pressurized at the adjusting component 20, thereby adjusting the amplitude of the impact component 40 through the adjusting component 20, thus maximizing the rock-breaking efficiency. The driving component 30 is configured to convert the flow of drilling fluid into its own rotation, while the impact component 40 converts the rotation of the driving component 30 into axial vibration to impact and break underground rock.

[0038] refer to Figure 1-4 As shown, the adjustment assembly 20 includes an adjustment cylinder 21 installed on the upper inner wall of the mounting cylinder 10, a sliding cylinder 22 installed inside the adjustment cylinder 21, and an adjustment seat 23 installed below the adjustment cylinder 21 and the sliding cylinder 22. An adjustment rod 24 extending downwards and connected to the impact assembly 40 is mounted on the adjustment seat 23 to adjust the amplitude of the impact assembly 40. A circumferential limit is formed between the adjustment cylinder 21 and the sliding cylinder 22, allowing the sliding cylinder 22 to move only axially relative to the adjustment cylinder 21. The sliding cylinder 22 is configured to form an axial limit with the adjustment ball 101 and to have an interference fit with the adjustment ball 101, allowing the adjustment ball 101 to be pressurized within the sliding cylinder 22. Under the action of drilling fluid, the adjustment ball 101 pushes the sliding cylinder 22 to move axially downwards, allowing the sliding cylinder 22 to cooperate with the adjustment cylinder 21 and the adjustment seat 23 to change the distance between the adjustment seat 23 and the adjustment cylinder 21, thereby adjusting the impact amplitude of the impact assembly 40.

[0039] Combination Figure 2 As shown, in some embodiments, the adjusting cylinder 21 and the mounting cylinder 10 are arranged coaxially. Furthermore, the outer wall of the adjusting cylinder 21 is fixedly connected to the inner wall of the mounting cylinder 10. In the axially downward direction, a limiting groove 211 extending radially outward is provided on the inner wall of the adjusting cylinder 21 to form a circumferential limiting with the sliding cylinder 22. Below the limiting groove 211, a plurality of adjusting grooves 212 are also provided on the inner wall of the adjusting cylinder 21. The upper ends of the plurality of adjusting grooves 212 are closed and the lower ends are open in the axial direction. The adjusting grooves 212 extend radially outward and are recessed into the inner surface of the adjusting cylinder 21, such that adjusting teeth 213 are formed between adjacent adjusting grooves 212 to limit the adjustment seat 23. The lower end of the adjusting teeth 213 is provided as an inclined surface to guide the adjustment seat 23 to rotate circumferentially. In some embodiments, the lengths of the plurality of adjusting grooves 212 in the axial direction are different. In some preferred embodiments, the lengths of several adjusting grooves 212 in the axial direction increase or decrease sequentially in the circumferential direction, thereby forming an adjusting group. More preferably, two, three, or more adjusting groups can be arranged sequentially on the inner wall of the adjusting cylinder 21.

[0040] Combination Figure 2-4As shown, in some embodiments, a limiting portion 221 extending radially outward into a limiting groove 211 is provided on the outer wall of the sliding cylinder 22, which is coaxially arranged with the adjusting cylinder 21, so that the sliding cylinder 22 can form a circumferential limiting with the adjusting cylinder 21. A pressing block 222 extending radially inward is installed on the inner wall of the sliding cylinder 22, so that a diameter reduction section is formed inside the sliding cylinder 22, so that the adjusting ball 101 inserted into the mounting cylinder 10 can be pressed. The pressing block 222 is configured to undergo elastic deformation in the radially outward direction after the adjusting ball 101 is pressed, so that the adjusting ball 101 forms an interference fit. This allows the adjusting ball 101 to push the sliding cylinder 22 to move axially downward through the pressing block 222 during the pressing process. In some embodiments, when the limiting portion 221 of the sliding cylinder 22 moves to the bottom of the limiting groove 211, the pressing intensity of the adjusting ball 101 continues to increase. The adjusting ball 101 will gradually move downward relative to the sliding cylinder 22 until the adjusting ball 101 completely passes through the narrowing range caused by the pressure block 222.

[0041] In some preferred embodiments, the pressure block 222 can be made of a material capable of elastic deformation, such as rubber or silicone. Multiple pressure blocks 222 can be evenly arranged circumferentially on the inner wall of the sliding cylinder 22 to ensure that the adjusting ball 101 is subjected to uniform force.

[0042] In some embodiments, the lower end of the sliding cylinder 22 is provided with a plurality of pushing teeth 223. The pushing teeth 223 are configured to push the adjusting seat 23 to move in an axially downward direction. When the pushing teeth 223 move below the adjusting teeth 213, the pushing teeth 223 can guide the adjusting seat 23 to rotate.

[0043] Combination Figure 2-4 As shown, in some embodiments, the center of the adjusting seat 23 has a through hole 231 so that the adjusting ball 101 and drilling fluid can pass through the adjusting seat 23. The upper end face of the adjusting seat 23 is provided with an adjusting member 232 extending axially upwards, and the adjusting member 232 can be inserted into the adjusting groove 212. The thickness of the adjusting member 232 in the radially inward direction is at least equal to the sum of the thicknesses of the adjusting tooth 213 and the pushing tooth 223, so that the adjusting member 232 can abut against both the pushing tooth 223 of the sliding cylinder 22 and the adjusting tooth 213 of the adjusting cylinder 21. The upper end of the adjusting member 232 is provided with a guide surface parallel to the inclined surface of the adjusting tooth 213, so that the adjusting member 232 can drive the adjusting seat 23 to rotate in the circumferential direction under the guidance of the tooth surfaces of the adjusting tooth 213 and the pushing tooth 223. The adjusting rod 24 is rotatably connected to the lower end face of the adjusting seat 23 via the first thrust bearing 233, so that the adjusting seat 23 can only push the adjusting rod 24 to move in the axial direction but cannot drive the adjusting rod 24 to rotate.

[0044] Combination Figure 1 and Figure 5 As shown, in this embodiment, the side wall of the mounting cylinder 10 is provided with a mounting hole 11 extending axially for the adjusting rod 24, so as to prevent the power assembly 30 and the drilling fluid flowing through the impact rock breaking device 100 from affecting the distance adjustment between the adjusting assembly 20 and the impact assembly 40. A first elastic member 234 is also provided below the adjusting seat 23, with its upper and lower ends abutting against the adjusting seat 23 and the mounting cylinder 10, respectively. A ball bag 235 is also installed on the inner wall of the mounting cylinder 10 below the first elastic member 234 to hold the adjusting ball 101 that has passed through the sliding cylinder 22 and the adjusting seat 23. The first elastic member 234 is preferably a spring so that the adjusting ball 101 can pass through the first elastic member 234 and enter the ball bag 235. The ball bag 235 is preferably a mesh bag with a mesh structure so that the flow of drilling fluid is not affected while holding the adjusting ball 101.

[0045] In some implementations, combined Figure 2 As shown, at this time, the adjusting ball 101 just begins to pressurize inside the sliding cylinder 22. The adjusting member 232 is located in the first adjusting groove 212a and the top end face of the adjusting member 232 abuts against the top groove wall of the first adjusting groove 212a, so that the adjusting seat 23 and the adjusting cylinder 21 are separated by a certain distance.

[0046] Combination Figure 3 As shown, when the adjusting ball 101 is pressed down to push the sliding cylinder 22 downward in the axial direction, the tooth surface of the pushing tooth 223 at the lower end of the sliding cylinder 22 abuts against the guide surface of the adjusting member 232. During this process, since the adjusting member 232 is still partially located in the first adjusting groove 212a, the tooth surface of the pushing tooth 223 cannot guide the adjusting member 232 to drive the adjusting seat 23 to rotate in the circumferential direction.

[0047] The adjusting ball 101 continues to pressurize the sliding cylinder 22, causing the sliding cylinder 22 to continue pushing the adjusting member 232 and the adjusting seat 23 downwards via the pushing tooth 223. During this process, the adjusting seat 23 compresses the first elastic member 234. When the pushing tooth 223 moves below the adjusting tooth 213, the adjusting member 232 completely leaves the first adjusting groove 212a. At this time, the first elastic member 234 releases its elastic force to push the adjusting seat 23 upwards. Guided by the tooth surface of the pushing tooth 223, the adjusting member 232 drives the adjusting seat 23 to rotate a certain angle in the axial direction, so that the projection of the adjusting member 232 and the adjusting tooth 213 between the first adjusting groove 212a and the second adjusting groove 212b in the axial direction partially overlaps. At this time, the limiting part 221 of the sliding cylinder 22 moves to the bottom of the limiting groove 211, so that the sliding cylinder 22 is located at the lowest point.

[0048] Combination Figure 4As shown, the first elastic element 234 releases its elastic force to continue pushing the adjusting seat 23 upward, causing the guide surface of the adjusting element 232 to abut against the inclined surface of the adjusting tooth 213. Guided by the inclined surface of the adjusting tooth 213, the adjusting element 232 inserts into the second adjusting groove 212b, which is spaced apart from the first adjusting groove 212a, and then abuts against the pushing tooth 223. At this time, the adjusting ball 101 continues to be compressed inside the sliding cylinder 22 and moves downward relative to the sliding cylinder 22 until the adjusting ball 101 has completely passed through the sliding cylinder 22.

[0049] When the adjusting ball 101 has completely passed through the sliding cylinder 22, the first elastic element 234 continues to release its elastic force and pushes the adjusting seat 23 upward. The adjusting element 232 on the adjusting seat 23 pushes the sliding cylinder 22 upward axially via the pushing teeth 223 until the guide surface of the adjusting element 232 abuts against the top wall of the second adjusting groove 212b. Since the axial length of the first adjusting groove 212a is greater than the axial length of the second adjusting groove 212b, the distance between the adjusting seat 23 and the adjusting cylinder 21 increases. As a result, the adjusting rod 24 moves downward a certain distance within the mounting hole 11 relative to its previous position.

[0050] It is understandable that the orientation of the guide surface of the adjusting tooth 213 and the inclined surface of the adjusting member 232, and the increase or decrease of the circumferential length of the plurality of adjusting grooves 212 in the adjusting assembly in the axial direction, can affect the change in distance between the adjusting seat 23 and the adjusting cylinder 21. For example, in the above embodiment, the adjusting assembly 20 increases the distance between the adjusting seat 23 and the adjusting cylinder 21 after being acted upon by the adjusting balls 101 in sequence. If the inclination direction of the guide surface of the adjusting tooth 213 and the inclined surface of the adjusting member 232 is set to be opposite to the direction in this embodiment, the adjusting assembly 20 can decrease the distance between the adjusting seat 23 and the adjusting cylinder 21 after being acted upon by the adjusting balls 101 in sequence.

[0051] In some preferred embodiments, since more than one adjustment group can be arranged on the inner wall of the adjustment cylinder 21, multiple adjustment members 232 can also be arranged on the adjustment seat 23 so as to correspond one-to-one with each adjustment group.

[0052] refer to Figure 5 and Figure 6As shown, the drive assembly 30 includes a limiting sleeve 31 located below the ball bag 235 and connected to the inner wall of the mounting cylinder 10, a second thrust bearing 32 mounted on the upper end of the limiting sleeve 31, and a drive rod 33 connected to the second thrust bearing 32. An impeller 34 is mounted on the shaft of the drive rod 33, and a transmission member 35 for connecting to the impact assembly 40 is provided at the lower end of the drive rod 33. The blades of the impeller 34 extend radially outward to engage with the inner wall of the limiting sleeve 31 to fully utilize the hydraulic energy of the drilling fluid flowing through the limiting sleeve 31. The impeller 34, driven by the drilling fluid flowing through the limiting sleeve 31, drives the drive rod 33 to rotate, thereby causing the transmission member 35 to rotate.

[0053] In some embodiments, a filter element 36 is further provided between the regulating assembly 20 and the drive assembly 30 to remove larger-diameter solid impurities from the drilling fluid. Specifically, the filter element 36 is located between the ball bag 235 and the second thrust bearing 32 and is connected to the inner wall of the mounting cylinder 10. The filter element 36 can filter out larger-diameter solid impurities from the drilling fluid before it enters the limiting sleeve 31, thereby reducing the scouring of the impeller 34 by the drilling fluid and extending the service life of the device.

[0054] refer to Figure 5-7 As shown, the impact assembly 40 includes a conversion member 41 connected to the transmission member 35, an impact member 42 abutting against the conversion member 41, and a connecting member 43 mounted on the lower end of the impact member 42. The conversion member 41 is configured to drive the impact member 42 to move axially when the transmission member 35 rotates. The lower end face of the conversion member 41 is provided as an inclined first abutment surface 411, and the first abutment surface 411 has a first point 412 near the impact member 42.

[0055] In some embodiments, the upper end face of the impact member 42 is provided as an oblique second abutment surface 421, and the edge of the second abutment surface 421 has a second point 422 near the conversion member 41 and a third point 423 away from the conversion member 41. The upper end of the impact member 42 is provided with a radially outwardly extending protrusion 424, which abuts against a second elastic member 425 with a support member 12 disposed on the inner wall of the mounting cylinder 10. The lower end sidewall of the impact member 42 is provided with a radially outwardly extending snap-fit ​​portion 426. The snap-fit ​​portion 426 extends into the snap-fit ​​groove 13 of the mounting cylinder 10, allowing circumferential positioning between the impact member 42 and the mounting cylinder 10. In some embodiments, a third thrust bearing 427 is also installed between the second elastic member 425 and the protrusion 424 to prevent the second elastic member 425 from being twisted due to friction with the protrusion 424.

[0056] Combination Figure 5As shown, in some embodiments, during the rotation of the conversion member 41 driven by the transmission member 35, the first point 412 always abuts against the circumferential edge of the second contact surface 421. The distance between the impact member 42 and the conversion member 41 is greatest when the first point 412 of the conversion member 41 abuts against the second point 422 of the impact member 42. The distance between the impact member 42 and the conversion member 41 is smallest when the first point 412 of the conversion member 41 abuts against the third point 423 of the impact member 42. During the rotation of the conversion member 41 driven by the transmission member 35, which moves the first point 412 from the third point 423 to the second point 422, the conversion member 41 continuously pushes the impact member 42 to move axially downwards. Simultaneously, the impact member 42 continuously compresses the second elastic member 425.

[0057] During the process of the transmission component 35 driving the conversion component 41 to rotate, causing the first point 412 to move from the second point 422 to the third point 423, the second elastic component 425 releases its elastic force to push the impact component 42 to move axially upward. Therefore, during the process of the transmission component 35 driving the conversion component 41 to rotate, causing the first point 412 to move back and forth between the second point 422 and the third point 423, the conversion component 41 and the second elastic component 425 sequentially push the impact component 42 to move back and forth axially. In this embodiment, the impact rock-breaking device 100 generates the largest impact amplitude. The maximum impact amplitude of the impact rock-breaking device 100 is the distance between the second point 422 and the third point 423 in the axial direction.

[0058] Combined again Figure 5 and Figure 6 As shown, the lower end of the adjusting rod 24 is connected to the side wall of the impact member 42. Since the adjusting assembly 20 can change the distance between the adjusting seat 23 and the adjusting cylinder 21 to adjust the position of the adjusting rod 24 in the axial direction within the mounting hole 11, the adjusting rod 24 can change the distance between the impact member 42 and the rotating member.

[0059] Combination Figure 6 As shown, in some embodiments, the adjusting assembly 20 moves the impact member 42 downward via the adjusting rod 24 to increase the distance between the impact member 42 and the rotating member. This ensures that the first point 412 of the rotating member can never abut against the third point 423 of the impact member 42. Therefore, during the rotation of the conversion member 41 driven by the transmission member 35, the first point 412 of the rotating member can only abut against the circumferential edge of the portion where the second point 422 of the second abutment surface 421 is located, and cannot abut against the circumferential edge of the portion where the first point 412 of the second abutment surface 421 is located. At this time, the impact amplitude of the rock-breaking device 100 is less than the maximum impact amplitude.

[0060] In some other embodiments, the adjusting assembly 20 moves the impact member 42 further downward via the adjusting rod 24, increasing the distance between the impact member 42 and the conversion member 41 so that the first point 412 and the second point 422 are always in the same radial plane or the first point 412 is always above the second point 422. In this case, as the transmission member 35 drives the conversion member 41 to rotate, the first point 412 can never contact the second point 422. Therefore, the conversion member 41 cannot push the impact member 42 to move axially. At this time, the impact amplitude of the rock-breaking device 100 is zero.

[0061] refer to Figure 7 As shown. In some embodiments, the upper end face of the connector 43 and the lower end face of the impact member 42 can be connected by welding or other methods. The lower end of the connector 43 is equipped with a connector 44 extending to the outside of the mounting cylinder 10 for mounting an impact drill bit (not shown). In this embodiment, the connector 43 and the connector 44 are connected by bolts.

[0062] In some embodiments, a third elastic element 441 is further provided between the upper end of the connector 44 and the locking seat 14 installed at the lower end of the mounting cylinder 10, in order to reduce the impact of the connector 44 on the locking seat 14. Preferably, the third elastic element 441 is a disc spring. In some embodiments, the locking seat 14 and the connector 44 are slidably sealed together by a sealing element 141. The locking seat 14 and the mounting cylinder 10 can be connected by means of screwing, welding, bolting, etc.

[0063] In some embodiments, the impact rock-breaking device 100 further includes a flow channel 50 penetrating the impact assembly 40, so that drilling fluid flowing into the mounting cylinder 10 from the regulating assembly 20 can flow out from the impact assembly 40. In this embodiment, the flow channel 50 penetrates the transmission member 35 and then sequentially penetrates the rotating member, the impact member 42, the connecting member 43, and the joint 44. The flow channel 50 may branch to form multiple branch channels 51, and the multiple branch channels 51 may also converge to form a main channel 52. The branch channels 51 and the main channel 52 can be arranged by technicians according to design requirements and the strength of each component, etc., which will not be elaborated further in this application.

[0064] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0066] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An impact rock-breaking device for drilling engineering, comprising, The drive assembly (30) is configured to rotate after the drilling fluid has flowed through it; An impact assembly (40) for generating axial impact vibrations, the impact assembly (40) including a converter (41) connected to the drive assembly (30), and an impact member (42) interacting with the converter (41), the converter (41) being configured to move the impact member (42) axially when rotated circumferentially with the drive assembly (30); and An adjustment assembly (20) includes a sliding cylinder (22) configured to pressurize by an adjustment ball (101) inserted from the wellhead, an adjustment cylinder (21) forming a circumferential limit with the sliding cylinder (22), and an adjustment seat (23) connected to the impact member (42). The inner wall of the adjustment cylinder (21) is provided with a plurality of adjustment grooves (212), the upper ends of which are closed and the lower ends open in the axial direction, and the axial length increases or decreases along the circumferential direction. The adjustment seat (23) is provided with an adjustment member (232) extending upward in the axial direction, the adjustment member (232) configured to be sequentially inserted into each of the adjustment grooves (212) in the circumferential direction to adjust the distance between the adjustment seat (23) and the adjustment cylinder (21). in, The sliding cylinder (22) is configured to move axially downward relative to the adjusting cylinder (21) after being pressurized, so as to adjust the distance between the adjusting cylinder (21) and the adjusting seat (23), thereby increasing or decreasing the distance between the impact member (42) and the conversion member (41).

2. The impact rock-breaking device for drilling engineering according to claim 1, characterized in that, The plurality of adjustment slots (212) include a first adjustment slot (212a) and a second adjustment slot (212b) spaced apart from the first adjustment slot (212a). An adjustment tooth (213) is provided between the first adjustment slot (212a) and the second adjustment slot (212b). The adjustment tooth (213) is configured to guide the adjustment member (232) to be inserted into the second adjustment slot (212b) after the adjustment member (232) leaves the first adjustment slot (212a).

3. The impact rock-breaking device for drilling engineering according to claim 2, characterized in that, The lower end of the sliding cylinder (22) is provided with a plurality of pushing teeth (223). The pushing teeth (223) are configured to push the adjusting member (232) away from the first adjusting groove (212a) when the sliding cylinder (22) moves downward along the axial direction, and then guide the adjusting member (232) to abut against the adjusting teeth (213) so that the adjusting member (232) can be guided by the adjusting teeth (213).

4. The impact rock-breaking device for drilling engineering according to claim 1, characterized in that, The adjusting seat (23) is provided with an adjusting rod (24) that connects to the impact member (42). The adjusting rod (24) is rotatably connected to the adjusting seat (23), so that the adjusting rod (24) can only move in the axial direction during the process of the adjusting member (232) being inserted into each of the adjusting grooves (212) in the circumferential direction.

5. The impact rock-breaking device for drilling engineering according to claim 1, characterized in that, The inner wall of the adjusting cylinder (21) is provided with a limiting groove (211), and the sliding cylinder (22) is provided with a limiting part (221) extending into the limiting groove (211), so that the adjusting cylinder (21) and the sliding cylinder (22) form a circumferential limit. The limiting part (221) is configured to move the sliding cylinder (22) to the lowest point when it moves to the lower end of the limiting groove (211) in the axial downward direction.

6. The impact rock-breaking device for drilling engineering according to claim 5, characterized in that, The lower part of the adjusting seat (23) is abutted by a first elastic member (234), which is configured to push the adjusting seat (23) upward after the sliding cylinder (22) moves downward along the axial direction to the lowest point and the adjusting ball (101) passes through the sliding cylinder (22), thereby causing the adjusting member (232) to push the sliding cylinder (22) upward.

7. The impact rock-breaking device for drilling engineering according to claim 6, characterized in that, An elastic pressure block (222) is installed on the inner wall of the sliding cylinder (22). The pressure block (222) is configured to engage with the adjusting ball (101) to apply pressure, and after the sliding cylinder (22) moves to the lowest point, it undergoes elastic deformation under the pressure to allow the adjusting ball (101) to pass through the sliding cylinder (22).

8. The impact rock-breaking device for drilling engineering according to claim 7, characterized in that, The adjustment assembly (20) also includes a ball bag (235) disposed below the adjustment seat (23), the ball bag (235) being configured to receive an adjustment ball (101) passing through the through hole (231) of the sliding cylinder (22) and the adjustment seat (23), and to allow drilling fluid to continue flowing downward.

9. The impact rock-breaking device for drilling engineering according to any one of claims 1-8, characterized in that, The lower end of the conversion member (41) is provided as an oblique first abutment surface (411), the first abutment surface (411) has a first point (412) near the impact member (42), the upper end of the impact member (42) is provided as an oblique second abutment surface (421), the first point (412) is configured to slide along the edge of the second abutment surface (421) during the rotation of the conversion member (41) in the circumferential direction, so that the impact member (42) can move in the axial direction.

10. The impact rock-breaking device for drilling engineering according to claim 9, characterized in that, The edge of the second contact surface (421) has a second point (422) near the impact member (42) and a third point (423) away from the impact member (42). The impact member (42) is also abutted by a second elastic member (425), which is configured to push the impact member (42) upward as the first point (412) moves from the second point (422) to the third point (423).

11. The impact rock-breaking device for drilling engineering according to claim 10, characterized in that, The adjustment component (20) is configured to adjust the distance between the impact member (42) and the conversion member (41) such that the first point (412) can only abut against the edge of the second point (422) of the second abutment surface (421), so that the moving distance of the impact member (42) is less than the axial distance between the second point (422) and the third point (423).

12. The impact rock-breaking device for drilling engineering according to claim 9, characterized in that, The impact rock-breaking device (100) further includes an installation cylinder (10), in which the adjustment component (20), the drive component (30) and the impact component (40) are arranged in sequence. The installation cylinder (10) and the impact component (42) form a circumferential limit, so that the impact component (42) can only move in the axial direction during the process of sliding along the edge of the second contact surface (421) at the first point (412).

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