CN118088029A - Multi-dimensional composite impact assembly - Google Patents

Abstract

The invention relates to the technical field of underground operation, in particular to a multi-dimensional composite impact assembly which comprises a drill bit shaft, a piston lining, a heavy hammer, a torsion hammer and a cooperative assembly, wherein a central channel which penetrates up and down is arranged in the middle of the drill bit shaft, two upper water outlets are arranged at intervals in front of and behind the upper part of the drill bit shaft, two lower water outlets are arranged at intervals in left and right of the lower part of the drill bit shaft, the piston lining with the lower end positioned above the lower water outlets is arranged on the outer side of the drill bit shaft corresponding to the positions of the upper water outlets, and an upper impact hole is arranged on the outer side of the upper part of the piston lining corresponding to the positions of the upper water outlets. The invention has reasonable and compact structure and convenient use, and the high-pressure drilling fluid enters the upper water outlet hole and the upper impact hole to realize the axial downward impact of the heavy hammer through the periodical alignment of the upper water outlet hole and the upper impact hole; the lower water outlet hole is periodically aligned with the lower impact hole, so that the axial upward impact of the heavy hammer is realized; the axial impact and the circumferential impact are respectively realized through the heavy hammer and the torsional impact hammer, the multidimensional impact and the auxiliary drill bit rock breaking are completed, and the characteristics of stability, reliability and good impact effect are realized.

Description

Multi-dimensional composite impact assembly

Technical Field

The invention relates to the technical field of underground operation, in particular to a multi-dimensional composite impact assembly.

Background

With the increase of drilling depth, the drilling meets the rock hardness of stratum, the grinding performance is strong, the drillability grade value is high, the drill bit is seriously slick and vibrate, the mechanical drilling speed is greatly reduced, and the oil and gas exploration and development speed and cost are seriously influenced. The mechanical drilling speed of the deep well hard stratum drilling is improved, students at home and abroad conduct a great deal of researches on the impact drilling technology, and various impact drilling tools are developed. The drilling rate of difficult formations can be significantly improved by using a torsional or rotary percussion drilling tool, so research on the impact drilling tool has become a hot spot in recent years, and various rotary impact, torsional or composite impact drilling tools driven by hydraulic force or mechanical force have been developed, and the rock breaking efficiency of the PDC bit under the conditions of the rotary impact and the torsional impact has been studied in a lot, but the rock breaking efficiency of the PDC bit in different rocks under the conditions of the composite impact has been explored less.

Improving the cutting force of the drill bit and weakening or eliminating stick-slip vibration are effective means for improving drilling efficiency. Through researches, the existing axial impact tool and the existing torsional impact tool have the defects that the accelerating effect is not ideal, the rock is more prone to brittle fracture under the torsional impact cutting action in a hard stratum, the invasion capacity of a drill bit is improved, and drill bit balling is prone to be caused by rock scraps with smaller sizes in a softer stratum. Axial impact can increase the cutting depth of the PDC drill bit, but the increased resistance torque can cause torsional vibration of the drill bit, and the drill bit is easy to collapse. Aiming at the limitations of the matching property of the traditional percussion drilling technology and the drill bit and the stratum adaptability, a composite percussion drilling tool is provided, so that the drill bit has a three-dimensional rock breaking effect, the mechanical drilling speed is improved, the torque fluctuation of the drill bit can be reduced, and the service life of the drill bit is prolonged.

The Chinese patent document with the bulletin number of CN 111021939B discloses a circumferential impact assembly, which is characterized by comprising a valve plate, arc-shaped bosses, an impact hammer, a front vertical boss, a rear vertical boss, a left hammer body, a right hammer body, an anvil and a current limiting piece, wherein a mandrel mounting cavity which is penetrated up and down is arranged in the middle of the valve plate, four arc-shaped bosses are uniformly distributed on the outer side of the valve plate at intervals along the circumferential direction, the arc-shaped bosses positioned on the front side of the valve plate are front bosses, the middle of the front bosses is provided with front arc-shaped openings with upward openings, the arc-shaped bosses positioned on the rear side of the valve plate are rear bosses, the middle of the rear bosses is provided with rear arc-shaped openings with upward openings, the arc-shaped bosses positioned on the left side of the valve plate are left bosses, the left boss is provided with a first hole row and a second hole row which are distributed at intervals from front to back, the first hole row comprises at least one first communication hole which is distributed at intervals from top to bottom, the second hole row comprises at least one second communication hole which is distributed at intervals from top to bottom, the arc boss positioned on the right side of the valve plate is a right boss, the right boss is provided with a third hole row and a fourth hole row which are distributed at intervals from front to back, the third hole row comprises at least one third communication hole which is distributed at intervals from top to bottom, and the fourth hole row comprises at least one fourth communication hole which is distributed at intervals from top to bottom; the outside of the valve plate is sleeved with an impact hammer, the inner side of the front part of the impact hammer is provided with a front vertical boss which is positioned in a front arc opening and can swing in the front arc opening, at least one fifth communication hole is arranged at intervals up and down corresponding to the inner side of the impact hammer at the left side of the front vertical boss, at least one sixth communication hole is arranged at intervals up and down corresponding to the inner side of the impact hammer at the right side of the front vertical boss, the inner side of the rear part of the impact hammer is provided with a rear vertical boss which is positioned in a rear arc opening and can swing in the rear arc opening, at least one seventh communication hole is arranged at intervals up and down corresponding to the inner side of the impact hammer at the left side of the rear vertical boss, at least one eighth communication hole is arranged at intervals up and down corresponding to the inner side of the impact hammer at the right side of the rear vertical boss, the left part outer side of the impact hammer corresponding to the left boss position is provided with a left hammer body, the outer side of the impact hammer corresponding to the front side position of the left hammer body is provided with at least one ninth communication hole at intervals up and down, the outer side of the impact hammer corresponding to the rear side position of the left hammer body is provided with at least one tenth communication hole at intervals up and down, the outer side of the impact hammer corresponding to the right boss position is provided with a right hammer body, the outer side of the impact hammer corresponding to the front side position of the right hammer body is provided with at least one eleventh communication hole at intervals up and down, and the outer side of the impact hammer corresponding to the rear side position of the right hammer body is provided with at least one twelfth communication hole at intervals up and down; the lower part of the impact hammer is sleeved with an anvil below the impact hammer, the inner side of the upper part of the anvil corresponding to the position of the left hammer body is provided with a left arc-shaped groove which can enable the left hammer body to swing in the anvil, a right arc-shaped groove which can enable the right hammer body to swing in the right arc-shaped groove is arranged on the inner side of the upper part of the anvil corresponding to the position of the right hammer body; the inner side of the upper part of the front side of the anvil corresponding to the position between the left arc-shaped groove and the right arc-shaped groove is provided with a front runner with an upward opening, the inner side of the upper part of the rear side of the anvil corresponding to the position between the left arc-shaped groove and the right arc-shaped groove is provided with a rear runner with an upward opening, the outer side of the upper part of the anvil corresponding to the position between the front runner and the left arc-shaped groove is provided with a first runner with an upward opening, the first runner is internally and vertically provided with at least one thirteenth communication hole at intervals, the lower end of the first runner is provided with a first inclined hole which is internally and externally communicated, the outer side of the upper part of the anvil corresponding to the position between the left arc-shaped groove and the rear runner is provided with a second runner with an upward opening, the second runner is internally and externally communicated with a second inclined hole, a third runner with an upward opening is arranged at the outer side of the upper part of the anvil corresponding to the position between the rear runner and the right arc-shaped groove, at least one fifteenth communication hole is arranged in the third runner at intervals up and down, a third inclined hole which is penetrated inside and outside is arranged at the lower end of the third runner, a fourth runner with an upward opening is arranged at the outer side of the upper part of the anvil corresponding to the position between the right arc-shaped groove and the front runner, at least one sixteenth communication hole is arranged in the fourth runner at intervals up and down, a fourth inclined hole which is penetrated inside and outside is arranged at the lower end of the fourth runner, and the first inclined hole, the second inclined hole, the third inclined hole and the fourth inclined hole are all inclined in an outer high and inner low shape; the first inclined hole, the second inclined hole, the third inclined hole and the fourth inclined hole are respectively internally provided with a current limiting piece; the device also comprises an inner mounting neck, a middle mounting neck and an upper mounting block, wherein the inner mounting neck is fixedly arranged at the upper end of the valve plate, the middle mounting neck is fixedly arranged at the upper end of the impact hammer, and two fixing blocks are uniformly distributed at the upper end of the anvil along the circumference; the mounting bearing is sleeved outside the inner mounting neck, and the lower end of the mounting bearing is arranged at the upper end of the arc-shaped boss; the anti-abrasion valve further comprises an anti-abrasion neck and anti-abrasion blocks, wherein the anti-abrasion neck is fixedly arranged at the lower end of the valve plate, and at least four anti-abrasion blocks are uniformly distributed at the lower end of the anti-abrasion neck along the circumference; a sealing ring groove is arranged at the outer side of the lower end of the anvil corresponding to the lower position of the first flow channel; the outer side of the lower end of the anvil is provided with external threads, and the inner side of the lower end of the anvil is provided with an inner hexagonal hole. The circumferential impact assembly has the following technical defects: (1) can only provide a single-dimensional impact; (2) The structure of a plurality of reversing ports is designed, so that the whole structure is complex and is easy to be damaged by erosion; (3) Torsional vibration of the drill bit may be induced, which in turn may lead to a risk of the drill bit collapsing.

The Chinese patent document with the publication number of CN111021947B discloses a rotary impact tool, which is characterized by comprising an outer cylinder, an upper mandrel, a lower mandrel, a mandrel anvil, an impact generating piece, an impact driving component, an impact executing component, an upper floating sealing component, a lower floating sealing component and a magnetic adsorption device, wherein the upper mandrel which can rotate relative to the outer cylinder is hung on the inner side of the upper part of the outer cylinder, the lower mandrel which can rotate relative to the outer cylinder is limitedly arranged on the inner side of the lower part of the outer cylinder, an installation ring groove is arranged on the inner side of the upper end of the lower mandrel, the mandrel anvil is arranged in the installation ring groove, the lower part of the upper mandrel is sleeved in the installation ring groove and is positioned above the mandrel anvil, the lower part of the upper mandrel is connected with the upper part of the lower mandrel in a transmission way, the upper mandrel can move up and down relative to the lower mandrel, and an impact generating piece which can strike the mandrel anvil when the upper mandrel descends is fixed at the lower part of the upper mandrel; the outer side of the lower mandrel is provided with an impact driving assembly which is sleeved on the inner side of the outer barrel and can rotate synchronously with the lower mandrel, the inner side of the outer barrel is provided with an impact executing assembly which is arranged on the impact driving assembly, and the impact executing assembly can periodically reciprocate up and down along with the rotation of the impact driving assembly; an upper floating seal assembly sleeved outside the upper part of the upper mandrel is arranged between the upper mandrel and the outer cylinder, a lower floating seal assembly which is arranged inside the lower part of the outer sleeve in a limiting manner is sleeved between the lower mandrel and the outer cylinder, and a magnetic adsorption device is arranged between the upper mandrel and the outer cylinder corresponding to the position between the upper floating seal assembly and the impact execution assembly; the inner side of the upper part of the outer cylinder is provided with a first annular table and a second annular table at intervals along the vertical direction, the upper end of an upper mandrel is positioned above the first annular table, the lower end of the upper mandrel is positioned below the second annular table, an upper annular limiting part is arranged on the outer side of the upper mandrel corresponding to the position between the first annular table and the second annular table, and thrust bearings are sleeved between the upper mandrel corresponding to the position between the first annular table and the annular limiting part and between the annular limiting part and the second annular table and the outer cylinder in a limiting manner; an upper wear-resistant sleeve is sleeved between the first annular table and the upper mandrel and between the second annular table and the upper mandrel; the outer cylinder comprises an upper joint, a bearing body sleeve, an impact sleeve, a middle sleeve and a lower sleeve, wherein the inner side of the upper end of the bearing body sleeve is integrally arranged with the outer side of the lower end of the first annular table, the outer side of the upper part of the first annular table is fixedly arranged with the inner side of the lower part of the upper joint, the upper joint seat is arranged on the bearing body sleeve, the inner side of the upper end of the impact sleeve is integrally arranged with the outer side of the lower end of the second annular table, the outer side of the upper end of the second annular table is fixedly arranged with the inner side of the lower end of the bearing body sleeve, the bearing body sleeve is arranged on the impact sleeve, the upper end of the lower mandrel is positioned above the middle sleeve, the impact execution assembly is positioned below the second annular table, and the impact driving assembly is positioned above the middle sleeve, the outer side of the lower end of the impact sleeve is provided with an outer annular groove, an outer wear-resistant sleeve is fixedly arranged in the outer annular groove, the inner side of the lower end of the impact sleeve is fixedly arranged together with the outer side of the upper end of the middle sleeve, the outer side of the lower end of the middle sleeve is fixedly arranged together with the inner side of the upper end of the lower sleeve, the outer side of the lower end of the middle sleeve is fixedly provided with a middle cylinder sealing sleeve positioned in the lower sleeve, the middle cylinder sealing sleeve is sleeved in the lower mandrel, an O-shaped sealing ring is arranged between the middle cylinder sealing sleeve and the lower mandrel, the inner side of the upper part of the middle sleeve is provided with a middle wear-resistant annular groove, and a middle wear-resistant sleeve sleeved on the outer side of the lower mandrel is arranged in the middle wear-resistant annular groove; the upper floating sealing assembly comprises an upper valve body, a dustproof ring, an upper one-way sealing ring, a first bushing and an upper sealing ring, wherein the upper one-way sealing ring can prevent liquid from penetrating from top to bottom, the upper valve body is sleeved between an upper mandrel and an upper joint at the position above a first annular table, the dustproof ring, the upper one-way sealing ring and the first bushing are sequentially arranged between the upper valve body and the upper mandrel at intervals from top to bottom, a first inner annular groove is arranged at the inner side of the upper valve body at the position between the dustproof ring and the upper one-way sealing ring, at least one first communication hole which can be communicated with the first inner annular groove is uniformly distributed at the outer side of the upper valve body at the position corresponding to the first inner annular groove along the circumference, at least one communication blind hole with a downward opening is uniformly distributed at the lower end of the upper valve body at the position corresponding to the lower part of the first inner annular groove along the circumference, the upper ends of the communicating blind holes are positioned above the first bushing, at least one upper sealing ring is arranged between the upper valve body and the upper joint at an upper-lower interval corresponding to the position below the first inner ring groove, the outer side of the upper valve body corresponding to the position between every two adjacent upper sealing rings is provided with a second communicating hole which can be communicated with the communicating blind hole at the corresponding position, and the inner side of the upper valve body corresponding to the position between the upper unidirectional sealing ring and the first bushing is provided with at least one third communicating hole which can be communicated with the communicating blind hole at the corresponding position; an upper mounting channel is communicated between the upper part of the bearing body sleeve and the first annular table, one end of the upper mounting channel is positioned at the outer side of the upper part of the bearing body sleeve and is provided with an upper mounting plug, and the other end of the upper mounting channel is positioned at the upper end of the first annular table; the lower floating sealing component comprises a lower valve body, a third bushing, a second bushing, a lower one-way sealing ring and a lower sealing ring, wherein the lower valve body is sleeved between a lower mandrel corresponding to the middle position of the lower sleeve and the lower sleeve, a first valve body annular table is arranged on the inner side of the upper part of the lower valve body, the second bushing is arranged between the inner side of the first valve body annular table and the lower mandrel, the second valve body annular table is arranged on the inner side of the lower end of the lower valve body, the lower one-way sealing ring which can prevent liquid from penetrating from bottom to top is arranged between the inner side of the upper part of the second valve body annular table and the lower mandrel, the lower sealing ring is arranged between the outer side of the upper part of the lower valve body and the lower sleeve, a second inner annular groove is arranged on the inner side of the lower valve body corresponding to the position between the second bushing and the lower one-way sealing ring, at least one through up-down communication groove is circumferentially distributed on the inner side of the first valve body annular table, at least one downward opening sliding groove is circumferentially distributed on the outer side of the lower valve body lower part, inner and outer through limit mounting holes are respectively formed on the outer side of the lower sleeve corresponding to the upper end position of each sliding groove, limit plugs with inner ends positioned in the sliding grooves at the corresponding positions are fixedly mounted in each limit mounting hole, a lower mounting through hole is formed on the lower sleeve corresponding to the position between the middle sleeve and the lower valve body, and a lower mounting plug is mounted in the lower mounting through hole; the inner side of the lower end of the lower sleeve is provided with a lower annular table, the inner side of the middle part of the lower annular table is provided with an inner annular groove, a third bushing is arranged in the inner annular groove, and a fourth communication hole which is communicated up and down is arranged on the lower annular table corresponding to the outer side of the inner annular groove; the magnetic adsorption device is a cylindrical magnet, at least two mounting blind holes are uniformly distributed at the upper end of the first annular table along the circumference, and each mounting blind hole is internally and fixedly provided with the cylindrical magnet. The rotary impact tool has the following technical defects: (1) can only provide a single-dimensional impact; (2) The impact force is small, the drill bit with strong aggressiveness is matched to realize speed acceleration and synergy, but the aim of reducing the cost cannot be realized; (3) The speed-up effect is severely limited when encountering hard and soft alternate hard formations.

The Chinese patent document with the bulletin number of CN 111305748B discloses a circumferential impact drilling acceleration tool, which is characterized by comprising a body, a mandrel, a circumferential impact assembly, a diversion pressing cap and a lower joint, wherein the mandrel is arranged in the body, a main flow passage which is vertically communicated is arranged in the middle of the mandrel, the diversion pressing cap is fixedly arranged at the upper end of the mandrel, at least one diversion long hole which is internally and externally communicated is arranged at the outer side of the middle of the mandrel, and a limiting ring table is arranged at the outer side of the lower part of the mandrel; the circumferential impact assembly comprises an impact driving piece, an impact generating piece and an impact executing piece, wherein the impact driving piece capable of periodically and reciprocally rotating relative to the mandrel is sleeved on the outer side of the mandrel corresponding to the position between the diversion pressing cap and the limiting ring table, the impact executing piece with the lower end positioned below the mandrel is arranged on the outer side of the impact driving piece, the impact generating piece arranged on the outer side of the impact driving piece is arranged on the inner side of the upper part of the impact executing piece, and the impact generating piece can impact the impact executing piece when rotating along with the impact driving piece; the inner side of the lower part of the impact execution piece is fixedly arranged with the outer side of the lower end of the mandrel, the outer side of the lower end of the impact execution piece is fixedly provided with a lower joint, and the inner side of the lower part of the body is arranged with the outer side of the upper part of the lower joint; a wear-resistant component is arranged between the lower end of the impact driving piece and the limiting ring table; the impact driving piece comprises a valve plate, and the valve plate is sleeved on the outer side of the middle part of the mandrel; the impact generating part comprises an impact hammer, and the outside of the valve plate is sleeved with the impact hammer; the impact execution piece comprises an anvil, the outer side of the impact hammer is sleeved with the anvil below the impact hammer, the inner side of the lower part of the anvil is fixedly arranged with the outer side of the lower end of the mandrel, and the outer side of the lower end of the anvil is fixedly provided with a lower joint; the device also comprises a fixed pressure cap, an inner mounting neck, a middle mounting neck and an upper mounting block, wherein the inner mounting neck is fixedly arranged at the upper end of the valve plate, the middle mounting neck is fixedly arranged at the upper end of the impact hammer, and two fixing blocks are uniformly distributed at the upper end of the anvil along the circumference; the outer side of the upper part of the mandrel corresponding to the lower part of the diversion pressing cap is provided with a fixed pressing cap, the inner side of the lower end of the fixed pressing cap corresponding to the positions of the inner mounting neck and the middle mounting neck is provided with a fixed inner annular groove, the inner mounting neck and the middle mounting neck are both positioned in the fixed inner annular groove, the lower side of the fixed pressing cap corresponding to the position of each fixed block is provided with a fixed limiting groove, and each fixed block is positioned in the fixed limiting groove at the corresponding position; the novel wear-resistant valve further comprises a wear-resistant neck, a wear-resistant ring and wear-resistant blocks, wherein the wear-resistant neck is fixedly arranged at the lower end of the valve plate, the wear-resistant ring is fixedly arranged at the upper end of the limiting ring table, and at least four wear-resistant blocks are uniformly distributed at the lower end of the wear-resistant neck and the upper end of the wear-resistant ring along the circumference. The circumferential impact drilling acceleration tool has the following technical defects: (1) can only provide a single-dimensional impact; (2) The structure of a plurality of reversing ports is designed, so that the whole structure is complex and is easy to be damaged by erosion; (3) Torsional vibration of the drill bit may be induced, which in turn may lead to a risk of the drill bit collapsing.

Disclosure of Invention

The invention provides a multi-dimensional composite impact assembly, which overcomes the defects of the prior art and can effectively solve the problems of single impact mode and complex structure of the existing impact speed-increasing device.

The technical scheme of the invention is realized by the following measures: the multi-dimensional composite impact assembly comprises a drill bit shaft, a piston liner, a heavy hammer, a torsion hammer and a cooperative assembly, wherein a central channel which penetrates up and down is arranged in the middle of the drill bit shaft, two upper water outlets are arranged at intervals in front of and behind the upper part of the drill bit shaft, two lower water outlets are arranged at intervals in left and right of the lower part of the drill bit shaft, the piston liner with the lower end positioned above the lower water outlets is arranged on the outer side of the drill bit shaft corresponding to the position of the upper water outlets, an upper impact hole is arranged on the outer side of the upper part of the piston liner corresponding to the position of the upper water outlets, and a lower impact hole is arranged on the outer side of the lower part of the piston liner corresponding to the position of the upper impact hole; the outer side of the piston lining part is provided with a heavy hammer, the inner side of the upper end of the heavy hammer is provided with an upper high-pressure impact ring groove, the inner side of the lower end of the heavy hammer is provided with a lower high-pressure impact ring groove, the outer side of the heavy hammer is provided with a torsion hammer, and a cooperative component which can enable the torsion hammer to synchronously and axially rotate when the torsion hammer moves up and down along the axial direction of the heavy hammer is arranged between the heavy hammer and the torsion hammer; the outer side of the lower part of the piston liner corresponding to the lower position of the lower impact hole is provided with an outer reflux hole, the outer side of the drill rod shaft corresponding to the lower position of the lower water outlet hole is provided with a reflux ring groove, the reflux ring groove is internally provided with an inner reflux hole inclined in an outer high-inner low manner, and the inner side of the drill rod shaft corresponding to the position between the lower water outlet hole and the inner reflux hole is provided with a mounting ring table.

The following are further optimizations and/or improvements to the above-described inventive solution:

the cooperative assembly can comprise a plurality of groups of retainers which are arranged at intervals up and down, two outer side grooves are arranged at intervals front and back of the outer side of the middle part of the heavy hammer, two inner side grooves which are consistent with the outer side grooves are arranged at intervals front and back of the inner side of the middle part of the torsion hammer, and the outer side grooves and the inner side grooves are spiral grooves; the retainer comprises a big ring body, a small ring body and balls, at least two big ring bodies are arranged between the heavy hammer and the torsional hammer at intervals up and down, the small ring bodies are arranged on the front side and the rear side of the big ring body, the balls are arranged in the small ring bodies, the inner ends of the balls are positioned in outer side grooves of corresponding positions, and the outer ends of the balls are positioned in inner side grooves of corresponding positions.

The torsion hammer can comprise a torsion cylinder and hammer bodies, wherein two hammer bodies are uniformly distributed on the outer side of the torsion cylinder along the circumference at intervals.

The outer side of the upper end of the drill bit shaft can be provided with a key groove, the outer side of the drill bit shaft corresponding to the position of the upper water outlet is provided with an upper fan-shaped ring table, and the outer side of the drill bit shaft corresponding to the position of the lower water outlet is provided with a lower fan-shaped ring table.

At least one guide vertical table can be arranged on the outer side of the piston lining at intervals along the circumference, a guide vertical groove is formed in the inner side of the heavy hammer corresponding to the position of the guide vertical table, and the guide vertical table is positioned in the guide vertical groove at the corresponding position.

The invention has reasonable and compact structure and convenient use, and the high-pressure drilling fluid enters the upper water outlet hole and the upper impact hole to realize the axial downward impact of the heavy hammer through the periodical alignment of the upper water outlet hole and the upper impact hole; the lower water outlet hole is periodically aligned with the lower impact hole, so that the axial upward impact of the heavy hammer is realized; the axial impact and the circumferential impact are respectively realized through the heavy hammer and the torsional impact hammer, the multidimensional impact and the auxiliary drill bit rock breaking are completed, and the characteristics of stability, reliability and good impact effect are realized.

Drawings

Fig. 1 is a schematic view of a cross-sectional front view of embodiments 1 to 5 of the present invention.

Fig. 2 is a schematic perspective view of the piston liner of fig. 1.

FIG. 3 is a schematic perspective view of the weight of FIG. 1.

Fig. 4 is a schematic perspective view of the cage of fig. 1.

Fig. 5 is a schematic perspective view of the torsional hammer of fig. 1.

Fig. 6 is a schematic perspective view of the drill bit shaft of fig. 1.

Fig. 7 is a schematic perspective view of fig. 1.

The codes in the drawings are respectively: 1 is a drill bit shaft, 2 is a piston liner, 3 is a heavy hammer, 4 is a torsion cylinder, 5 is a hammer body, 6 is a key groove, 7 is a central channel, 8 is an upper water outlet, 9 is a lower water outlet, 10 is an upper impact hole, 11 is a lower impact hole, 12 is an upper high-pressure impact ring groove, 13 is a lower high-pressure impact ring groove, 14 is a large ring body, 15 is a small ring body, 16 is a ball, 17 is an inner groove, 18 is an outer groove, 19 is an upper fan-shaped ring table, 20 is a guide vertical table, 21 is a guide vertical groove, 22 is an outer reflow hole, 23 is an inner reflow hole, and 24 is a mounting ring table.

Detailed Description

The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention.

In the present invention, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 1 of the specification, for example: the positional relationship of the front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.

The invention is further described below with reference to examples and figures:

Example 1: as shown in fig. 1, 2, 3, 4, 5, 6 and 7, the multi-dimensional composite impact assembly comprises a drill bit shaft 1, a piston liner 2, a heavy hammer 3, a torsion hammer and a cooperative assembly, wherein a central channel 7 which penetrates up and down is arranged in the middle of the drill bit shaft 1, two upper water outlet holes 8 are arranged at intervals in front of and behind the upper part of the drill bit shaft 1, two lower water outlet holes 9 are arranged at intervals in left and right of the lower part of the drill bit shaft 1, the piston liner 2 with the lower end positioned above the lower water outlet holes 9 is arranged on the outer side of the drill bit shaft 1 corresponding to the positions of the upper water outlet holes 8, an upper impact hole 10 is arranged on the outer side of the upper part of the piston liner 2 corresponding to the positions of the upper impact holes 10, and a lower impact hole 11 is arranged on the outer side of the lower part of the piston liner 2 corresponding to the positions of the upper impact holes 10; the outer side of the middle part of the piston liner 2 is provided with a heavy hammer 3, the inner side of the upper end of the heavy hammer 3 is provided with an upper high-pressure impact ring groove 12, the inner side of the lower end of the heavy hammer 3 is provided with a lower high-pressure impact ring groove 13, the outer side of the heavy hammer 3 is provided with a torsion hammer, and a cooperative component which can enable the torsion hammer to synchronously and axially rotate when the heavy hammer 3 axially moves up and down is arranged between the heavy hammer 3 and the torsion hammer; an outer backflow hole 22 is arranged on the outer side of the lower part of the piston liner 2 corresponding to the lower position of the lower impact hole 11, a backflow ring groove is arranged on the outer side of the drill rod shaft corresponding to the lower position of the lower water outlet hole 9, an inner backflow hole 23 which is inclined in an outer high-inner low mode is arranged in the backflow ring groove, and a mounting ring table 24 is arranged on the inner side of the drill rod shaft 1 corresponding to the position between the lower water outlet hole 9 and the inner backflow hole 23. In the use process, the upper water outlet hole 8 is aligned with the upper impact hole 10 periodically, so that high-pressure drilling fluid enters the upper high-pressure impact ring groove 12 to realize the axial downward impact of the heavy hammer 3; the lower water outlet hole 9 is periodically aligned with the lower impact hole 11, so that high-pressure drilling fluid enters the lower high-pressure impact ring groove 13, and the axial upward impact of the heavy hammer 3 is realized; the axial impact and the circumferential impact are respectively realized through the heavy hammer 3 and the torsional impact hammer, so as to finish multidimensional impact and assist the drill bit to break rock; through the arrangement of the cooperative assembly, the torsional impact hammer completes circumferential impact while the heavy hammer 3 axially impacts; by arranging the upper high-pressure impact ring groove 12, the high-pressure drilling fluid forms a high-pressure cavity after entering the upper high-pressure impact ring groove 12, so that the heavy hammer 3 can be pushed to move downwards; by arranging the lower high-pressure impact ring groove 13, the high-pressure drilling fluid forms a high-pressure cavity after entering the lower high-pressure impact ring groove 13, so that the heavy hammer 3 can be pushed to move upwards; by installing the prior known throttling nozzles at the mounting ring table 24, the outer reflux holes 22 and the inner reflux holes 23 are matched, so that the impact effect is effectively improved. According to the requirements, the invention can be arranged in the prior known outer cylinder, and the inner side of the outer cylinder corresponding to the position of the torsion hammer can be provided with an arc-shaped swing groove which can enable the torsion hammer to swing in the outer cylinder, so that the torsion hammer swings in the outer cylinder to impact the arc-shaped impact groove, and circumferential impact force is provided; for a specific structure, reference may be made to "the lower anvil is sleeved on the outer side of the impact hammer" described in the chinese patent publication CN 111021939B, and a left arc-shaped groove capable of swinging the left hammer in the left anvil is provided on the inner side of the upper portion of the anvil corresponding to the left hammer, and a right arc-shaped groove capable of swinging the right hammer in the right anvil is provided on the inner side of the upper portion of the anvil corresponding to the right hammer ".

The multi-dimensional composite impact assembly can be further optimized or/and improved according to actual needs:

Example 2: as shown in fig. 1,2,3, 4,5,6 and 7, the cooperative assembly comprises a plurality of groups of retainers which are arranged at intervals up and down, two outer grooves 18 are arranged at intervals front and back of the middle part of the heavy hammer 3, two inner grooves 17 which are consistent with the outer grooves 18 are arranged at intervals front and back of the inner side of the middle part of the torsion hammer, and the outer grooves 18 and the inner grooves 17 are spiral grooves; the retainer comprises a large ring body 14, a small ring body 15 and balls 16, at least two large ring bodies 14 are arranged between the heavy hammer 3 and the torsion hammer at intervals up and down, the small ring bodies 15 are arranged on the front side and the rear side of the large ring body 14, the balls 16 are arranged in the small ring bodies 15, the inner ends of the balls 16 are positioned in outer side grooves 18 at corresponding positions, and the outer ends of the balls 16 are positioned in inner side grooves 17 at corresponding positions. In the use process, through the arrangement, when the heavy hammer 3 moves up and down axially, the torsional hammer can synchronously rotate axially, the friction force of the torsional hammer during rotation can be reduced, and the impact effect of the invention is effectively improved. According to the invention, through the scheme of rolling bodies (balls 16) -sliding ways (an outer side groove 18 and an inner side groove 17), the heavy hammer 3 is matched with the torsion hammer, so that a large number of reversing ports adopted by the conventional impact device can be reduced, and axial impact force and torsion impact force can be provided for the drill bit shaft 1 at the same time, thereby realizing the purposes of speed increasing and efficiency increasing; the invention greatly simplifies the structure form of the prior impact drilling tool, is easy to process and assemble, has low cost and long service life, and can adjust the impact force by adjusting the length of the heavy hammer 3 and the like.

Example 3: as shown in fig. 1,2, 3,4, 5, 6 and 7, the torsion hammer comprises a torsion cylinder 4 and hammer bodies 5, and two hammer bodies 5 are uniformly distributed on the outer side of the torsion cylinder 4 at intervals along the circumference. In the use process, the arc-shaped impact groove arranged on the inner side of the outer cylinder body is impacted through the swing of the hammer body 5, so that circumferential impact force is provided.

Example 4: as shown in fig. 1,2, 3, 4, 5, 6 and 7, a key slot 6 is arranged on the outer side of the upper end of the drill bit shaft 1, an upper fan-shaped ring table 19 is arranged on the outer side of the drill bit shaft 1 corresponding to the position of the upper water outlet hole 8, and a lower fan-shaped ring table is arranged on the outer side of the drill bit shaft 1 corresponding to the position of the lower water outlet hole 9. In the use, through this setting, guarantee to go up apopore 8 and go up the periodic alignment of impact hole 10 when and down apopore 9 and the periodic leakproofness of alignment of impact hole 11 down, avoid high pressure drilling fluid to run off, influence the axial impact effect.

Example 5: as shown in fig. 1,2,3,4, 5, 6 and 7, at least one guiding vertical table 20 is arranged at the outer side of the piston liner 2 along the circumference at intervals, a guiding vertical groove 21 is arranged at the inner side of the heavy hammer 3 corresponding to the position of the guiding vertical table 20, and the guiding vertical table 20 is positioned in the guiding vertical groove 21 at the corresponding position. In use, the axial movement of the weight 3 is guided by the guide stand 20.

The technical characteristics form the embodiment of the invention, have stronger adaptability and implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.

Claims (8)

1. The multi-dimensional composite impact assembly is characterized by comprising a drill bit shaft, a piston liner, a heavy hammer, a torsion hammer and a cooperative assembly, wherein a central channel which is penetrated up and down is arranged in the middle of the drill bit shaft; the outer side of the piston lining part is provided with a heavy hammer, the inner side of the upper end of the heavy hammer is provided with an upper high-pressure impact ring groove, the inner side of the lower end of the heavy hammer is provided with a lower high-pressure impact ring groove, the outer side of the heavy hammer is provided with a torsion hammer, and a cooperative component which can enable the torsion hammer to synchronously and axially rotate when the torsion hammer moves up and down along the axial direction of the heavy hammer is arranged between the heavy hammer and the torsion hammer; the outer side of the lower part of the piston liner corresponding to the lower position of the lower impact hole is provided with an outer reflux hole, the outer side of the drill rod shaft corresponding to the lower position of the lower water outlet hole is provided with a reflux ring groove, the reflux ring groove is internally provided with an inner reflux hole inclined in an outer high-inner low manner, and the inner side of the drill rod shaft corresponding to the position between the lower water outlet hole and the inner reflux hole is provided with a mounting ring table.

2. The multi-dimensional composite impact assembly according to claim 1, wherein the cooperative assembly comprises a plurality of groups of retainers which are arranged at intervals up and down, two outer grooves are arranged at intervals front and back of the outer side of the middle part of the heavy hammer, two inner grooves which are consistent with the outer grooves are arranged at intervals front and back of the inner side of the middle part of the torsion hammer, and the outer grooves and the inner grooves are spiral grooves; the retainer comprises a big ring body, a small ring body and balls, at least two big ring bodies are arranged between the heavy hammer and the torsional hammer at intervals up and down, the small ring bodies are arranged on the front side and the rear side of the big ring body, the balls are arranged in the small ring bodies, the inner ends of the balls are positioned in outer side grooves of corresponding positions, and the outer ends of the balls are positioned in inner side grooves of corresponding positions.

3. The multi-dimensional composite impact assembly according to claim 1 or 2, wherein the torsion hammer comprises a torsion cylinder and hammer bodies, and two hammer bodies are uniformly distributed on the outer side of the torsion cylinder at intervals along the circumference.

4. The multi-dimensional composite impact assembly according to claim 1 or 2, wherein a key groove is arranged on the outer side of the upper end of the drill shaft, an upper fan-shaped annular table is arranged on the outer side of the drill shaft corresponding to the position of the upper water outlet hole, and a lower fan-shaped annular table is arranged on the outer side of the drill shaft corresponding to the position of the lower water outlet hole.

5. The multi-dimensional composite impact assembly according to claim 3, wherein a key slot is arranged on the outer side of the upper end of the drill shaft, an upper fan-shaped annular table is arranged on the outer side of the drill shaft corresponding to the position of the upper water outlet hole, and a lower fan-shaped annular table is arranged on the outer side of the drill shaft corresponding to the position of the lower water outlet hole.

6. The multi-dimensional composite impact assembly according to claim 1, 2 or 5, wherein at least one guide vertical table is circumferentially arranged at intervals on the outer side of the piston liner, a guide vertical groove is formed on the inner side of the heavy hammer corresponding to the position of the guide vertical table, and the guide vertical table is positioned in the guide vertical groove corresponding to the position.

7. The multi-dimensional composite impact assembly according to claim 3, wherein at least one guide vertical table is circumferentially arranged at intervals on the outer side of the piston liner, a guide vertical groove is formed on the inner side of the heavy hammer corresponding to the position of the guide vertical table, and the guide vertical table is positioned in the guide vertical groove at the corresponding position.

8. The multi-dimensional composite impact assembly of claim 4, wherein at least one guide vertical platform is circumferentially spaced on the outer side of the piston liner, a guide vertical groove is formed on the inner side of the weight corresponding to the position of the guide vertical platform, and the guide vertical platform is positioned in the guide vertical groove at the corresponding position.