阅读说明：本技术 一种用于岩溶地质桩基防偏钻孔设备 (Be used for karst geology pile foundation to prevent inclined to one side drilling equipment ) 是由 张克燮 廖绫 吕勇 于 2021-01-07 设计创作，主要内容包括：本发明属于桩基冲击钻领域,尤其涉及一种用于岩溶地质桩基防偏钻孔设备,它包括冲击钻机构、限摆机构,其中冲击钻机构吊挂在冲击钻探机的钢丝绳A上,冲击钻机构在钢丝绳A的往复牵引下对岩层进行往复冲击破碎,进而在岩层上形成冲击钻孔；整个冲击钻孔过程无需向溶洞内投放大量片石,从而避免因片石准备量不足而导致的钻孔内用来保护孔壁和排渣的泥浆大量流失,同时避免因片石投放经验不足导致的片石投放位置不合理而导致的在溶洞底部冲击钻孔产生偏斜,有效提高岩溶地质的冲击钻孔效率。(The invention belongs to the field of pile foundation impact drilling, and particularly relates to a deviation-preventing drilling device for a karst geological pile foundation, which comprises an impact drilling mechanism and a swing-limiting mechanism, wherein the impact drilling mechanism is hung on a steel wire rope A of an impact drilling machine, and the impact drilling mechanism carries out reciprocating impact crushing on a rock stratum under the reciprocating traction of the steel wire rope A so as to form an impact drilling hole on the rock stratum; a large amount of stones do not need to be put into the karst cave in the whole impact drilling process, so that the mud used for protecting the hole wall and discharging slag in the drill hole caused by insufficient preparation amount of the stones is prevented from being lost in a large amount, meanwhile, the impact drilling at the bottom of the karst cave caused by unreasonable putting positions of the stones caused by insufficient experience in putting the stones is prevented from generating deflection, and the impact drilling efficiency of karst geology is effectively improved.)

1. The utility model provides a be used for inclined to one side drilling equipment of karst geology pile foundation, its characterized in that: the rock stratum impact crushing device comprises an impact drilling mechanism and a swing limiting mechanism, wherein the impact drilling mechanism is hung on a steel wire rope A of an impact drilling machine, and the impact drilling mechanism carries out reciprocating impact crushing on a rock stratum under the reciprocating traction of the steel wire rope A so as to form an impact drilling hole on the rock stratum; when the percussion drilling mechanism meets and reaches a steep slope at the bottom of the karst cave, the percussion drilling mechanism is pulled to and fro through a steel wire rope A, an impact block arranged on the percussion drilling mechanism impacts the percussion drilling mechanism in the process that the percussion drilling mechanism swings back from an inclined state to a vertical state around a contact point of the percussion drilling mechanism and the slope at the bottom of the karst cave, the percussion drilling mechanism impacts a contact part of the percussion drilling mechanism and the slope at the bottom of the karst cave under the reciprocating impact action of the impact block and finally forms a platform which allows the percussion drilling mechanism to perform straight-up and straight-down percussion drilling operation on the slope at the bottom of the karst cave;

the percussion drilling mechanism is matched with a swing limiting mechanism matched with the wall of a drilling hole, and the swing limiting mechanism matched with the percussion drilling mechanism prevents the percussion drilling mechanism reaching the gentle slope at the bottom of the karst cave from swinging and assists the percussion drilling mechanism to carry out vertical percussion drilling on the gentle slope at the bottom of the karst cave;

the percussion drilling mechanism comprises a percussion cone, a rotary sleeve, a slide rod, a spring A, a circular plate, a trigger rod, a swing rod, an arc-shaped sliding sleeve and an impact block, wherein the top end of the five-claw-shaped percussion cone is provided with a cylindrical table, the top end of the cylindrical table is in spherical hinge connection with the swing rod connected with a steel wire rope A, and the swing rod is matched with a swing limiting mechanism; a sliding rod vertically slides in the middle of the inner part of the impact cone, and a spring A for resetting the sliding rod is nested on the sliding rod; a circular plate arranged at the top end of the sliding rod is in contact fit with a trigger rod arranged at the tail end of the oscillating rod; a rotating sleeve and an impact block which are mutually impacted and matched slide in the arc-shaped sliding sleeve around the central axis of the arc-shaped sliding sleeve, and the rotating sleeve is nested and rotates on the cylindrical table; the rotating sleeve and the arc sliding sleeve are provided with structures which lock the rotating sleeve at the middle position of the arc sliding sleeve and at the limit position of one end in the arc sliding sleeve and are driven by the sliding rod, the structures unlock the position of the rotating sleeve at the middle part in the arc sliding sleeve when the cylindrical table swings from the vertical state and lock the limit position of one end in the arc sliding sleeve when the cylindrical table swings from the inclined state to the vertical state; the arc-shaped sliding sleeve is provided with a structure for locking the impact block farthest from the rotating sleeve in the arc-shaped sliding sleeve, and the structure locks the position of the impact block farthest from the rotating sleeve when the cylindrical table swings from the vertical state and unlocks the position of the impact block farthest from the rotating sleeve when the cylindrical table swings from the inclined state to the vertical state.

2. The anti-deviation drilling equipment for the karst geological pile foundation according to claim 1, characterized in that: the sliding rod slides in a sliding groove A in the cylindrical table, and the circular plate moves in a circular groove A at the top of the sliding groove A; the sliding rod is symmetrically provided with two guide blocks A which slide in two guide grooves A on the inner wall of the sliding groove A respectively; the spring A is positioned in the annular groove A on the inner wall of the sliding groove A; one end of the spring A is connected with the inner wall of the annular groove A, and the other end of the spring A is connected with a tension spring ring A arranged on the sliding rod; a circular ring A is nested and installed on the cylindrical table and rotates in a circular groove C on the inner wall of the rotating sleeve; a sliding block vertically slides in the sliding chute A, a rack B arranged at the upper end of the sliding block is meshed with a straight gear B arranged in the sliding chute A, the straight gear B is connected with a coaxial straight gear A through a shaft sleeve, and the straight gear A is meshed with a rack A arranged at the lower end of the sliding rod; the outer side of the cylindrical table is provided with a ring groove B, and a ring sleeve A is rotationally matched in the ring groove B; the ring sleeve A is fixedly connected with the sliding block through four connecting blocks which are uniformly distributed in the circumferential direction, and the four connecting blocks vertically slide in four sliding chutes B which are arranged on the inner wall of the sliding chute A and communicated with the annular groove B respectively; the rotating sleeve is symmetrically provided with two guide blocks B which slide in two guide grooves B on the inner wall of the arc-shaped ring sleeve respectively; the inner wall of the rotating sleeve is symmetrically provided with two sliding chutes C communicated with the outer side of the rotating sleeve, each sliding chute C is internally provided with an outer sleeve matched with the ring groove E on the ring sleeve A in a sliding manner, and the inner wall of the ring groove E is provided with a transition inclined plane convenient for the outer sleeve to slide out of the ring groove E along the central axis of the cylindrical table; each outer sleeve is nested with a spring B for resetting the outer sleeve; a limiting block A matched with a limiting groove A and a limiting groove B on the inner wall of the corresponding side of the arc-shaped sliding sleeve is arranged in each outer sleeve in a sliding manner; each outer sleeve is internally provided with a spring C for resetting the corresponding limiting block A; the two guide blocks E are symmetrically arranged on the impact block and respectively slide in the two guide grooves B on the inner wall of the arc-shaped sliding sleeve; the impact block is matched with two limiting blocks B sliding in two sliding grooves D symmetrically distributed near the tail end of the inner wall of the arc-shaped sliding sleeve; a trigger block A matched with the corresponding side limiting block A slides in each limiting groove A, and a trigger block B matched with the corresponding side limiting block A slides in each limiting groove B; the trigger block A, the trigger block B and the limiting block B on the same side are arranged on the same connecting rod, and the connecting rod slides in a sliding chute E which is communicated with the limiting groove A, the limiting groove B and the sliding chute D on the same side in the arc-shaped sliding sleeve; two springs D for resetting the corresponding connecting rods are symmetrically arranged in the sliding groove E; one end of the spring D is connected with the connecting rod, and the other end of the spring D is connected with the inner wall of the sliding groove E.

3. The anti-deviation drilling equipment for the karst geological pile foundation according to claim 2, characterized in that: the spring B is positioned in the annular groove D on the inner wall of the corresponding chute C; one end of the spring B is connected with the inner wall of the corresponding ring groove D, and the other end of the spring B is connected with a tension spring ring B arranged on the corresponding outer sleeve; two guide blocks C are symmetrically arranged on the limiting block A, and respectively slide in two guide grooves C on the inner wall of the corresponding outer sleeve; one end of the spring C is connected with the inner wall of the corresponding outer sleeve, and the other end of the spring C is connected with the end face of the corresponding limiting block A.

4. The anti-deviation drilling equipment for the karst geological pile foundation according to claim 2, characterized in that: the bottom of the impact cone is evenly and densely provided with impact teeth; the limiting groove A is positioned in the middle of the inner wall of the corresponding side of the arc-shaped sliding sleeve, and the limiting groove B and the sliding groove D are respectively positioned near two ends of the inner wall of the corresponding side of the arc-shaped sliding sleeve; the radian of the limiting groove B along the sliding direction of the rotating sleeve relative to the arc-shaped sliding sleeve is greater than that of the limiting groove A.

5. The anti-deviation drilling equipment for the karst geological pile foundation according to claim 1, characterized in that: the swing limiting mechanism comprises a ring sleeve B, a shaft A, a bevel gear B, a ring sleeve C, an internal thread sleeve, a guide block D, an arc plate, a ring sleeve D, a winding wheel, a steel wire rope B and a shield, wherein radial shafts A are respectively matched in a plurality of circular grooves B uniformly formed in the circumferential direction on the side wall of the ring sleeve B in a rotating mode; each shaft A is provided with a bevel gear A, and two adjacent bevel gears A are simultaneously meshed with a bevel gear B arranged on the inner wall of the ring sleeve B; each shaft A is in threaded fit with an internal thread sleeve, and the internal thread sleeve radially slides in a ring sleeve C arranged at a corresponding circular groove B; the tail end of the internal thread sleeve is provided with an arc plate matched with the inner wall of the drill hole; a winding wheel is arranged on one shaft A and is positioned in the accommodating groove on the inner wall of the corresponding circular groove B; the winding wheel is wound with a plurality of circles of steel wire ropes B, two ends of each steel wire rope B are connected with an electric module arranged on the percussion drilling machine, and the electric module drives the winding wheel to rotate through the steel wire ropes B; a ring sleeve D with the same central axis is arranged in the ring sleeve B through a plurality of fixed rods which are uniformly distributed in the circumference; the ring sleeve D is matched with a swing rod in the percussion drill mechanism.

6. An anti-deviation drilling device for karst geological pile foundations according to claim 5, characterized in that: the internal thread sleeve is symmetrically provided with two guide blocks D which slide in two guide grooves D on the inner wall of the ring sleeve C respectively; and a shield for isolating the bevel gear A and the bevel gear B from the slurry is arranged on the inner wall of the ring sleeve B.

Technical Field

The invention belongs to the field of pile foundation impact drilling, and particularly relates to deviation-preventing drilling equipment for a karst geological pile foundation.

Background

In the process of pile foundation construction, a percussion drill is generally used for forming a percussion drilling hole with a certain depth on the ground. The percussion drilling tool has good drilling performance, can effectively perform drilling operation on harder stratums, and has high efficiency. The method is suitable for rock formations with high hardness, weathered rock formations and various hard and brittle geological environments.

The impact drill is an engineering drilling device which performs drilling by means of impact force in a vertical reciprocating motion, the working principle of the impact drill is similar to that of a hammer for rock drilling, and the impact drill performs drilling operation by means of impact force, and generally mainly refers to a gravity impact drill. The percussion drill utilizes the kinetic energy of the impactor generated under the action of self weight to smash the rock, and then utilizes the slurry to discharge rock fragments, so as to achieve the drilling effect.

In using the percussion drilling to carry out karst geology pile foundation work progress, can survey the underground cavern distribution condition of drilling position before drilling and know, can survey the drill bit position in real time at drilling in-process equally. If the drill bit meets the necessary karst cave, the drill hole formed by the impact of the drill bit on the bottom of the karst cave is inclined because the drill bit swings under the action of the slope at the bottom of the karst cave.

The traditional processing mode is that a large amount of rubbles are put into a karst cave to fill the karst cave, and then the impact drill is used for carrying out reciprocating impact with small amplitude until a non-inclined impact drilling position is formed at the bottom of the karst cave, but the processing mode of adding the rubbles into the karst cave has the following problems:

first, when the amount of prepared slate is insufficient, the slurry used for protecting the hole wall and discharging slag in the drilled hole is easily lost due to the leakage of the karst cave.

Secondly, when the position of putting the rubble is unreasonable, the corresponding function can not be well played, and finally, the drill hole at the bottom of the karst cave can still be deviated.

Finally, the direct result brought by putting the rubbles is that the drilling construction time is greatly prolonged, and the working efficiency is lower.

Therefore, it is necessary to design a percussion drill which can impact a non-deviation drill hole at the bottom of a karst cave without throwing a rubble so as to improve the drilling efficiency.

The invention designs a deviation-preventing drilling device for a karst geological pile foundation, which solves the problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention discloses a deviation-preventing drilling device for a karst geological pile foundation, which is realized by adopting the following technical scheme.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally use, which are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

The utility model provides a be used for karst geology pile foundation to prevent inclined to one side drilling equipment, it includes percussion drill mechanism, limit pendulum mechanism, wherein percussion drill mechanism hangs on the wire rope A of percussion drill, and percussion drill mechanism carries out reciprocal impact breakage to the stratum under wire rope A's reciprocal traction, and then forms the percussion drilling on the stratum; when the percussion drilling mechanism meets and reaches a steep slope at the bottom of the karst cave, the percussion drilling mechanism is pulled to and fro through a steel wire rope A, an impact block arranged on the percussion drilling mechanism impacts the percussion drilling mechanism in the process that the percussion drilling mechanism swings back from an inclined state to a vertical state around a contact point of the percussion drilling mechanism and the slope at the bottom of the karst cave, the percussion drilling mechanism impacts a contact part of the percussion drilling mechanism and the slope at the bottom of the karst cave under the reciprocating impact action of the impact block and finally forms a platform which allows the percussion drilling mechanism to perform straight-up and straight-down percussion drilling operation on the slope at the bottom of the karst cave;

the impact drilling mechanism is matched with a swing limiting mechanism matched with the wall of a drilling hole, and the swing limiting mechanism matched with the impact drilling mechanism prevents the impact drilling mechanism reaching the gentle slope at the bottom of the karst cave from swinging and assists the impact drilling mechanism to perform vertical impact drilling on the gentle slope at the bottom of the karst cave.

The percussion drilling mechanism comprises a percussion cone, a rotary sleeve, a slide rod, a spring A, a circular plate, a trigger rod, a swing rod, an arc-shaped sliding sleeve and an impact block, wherein the top end of the five-claw-shaped percussion cone is provided with a cylindrical table, the top end of the cylindrical table is in spherical hinge connection with the swing rod connected with a steel wire rope A, and the swing rod is matched with a swing limiting mechanism; a sliding rod vertically slides in the middle of the inner part of the impact cone, and a spring A for resetting the sliding rod is nested on the sliding rod; a circular plate arranged at the top end of the sliding rod is in contact fit with a trigger rod arranged at the tail end of the oscillating rod; a rotating sleeve and an impact block which are mutually impacted and matched slide in the arc-shaped sliding sleeve around the central axis of the arc-shaped sliding sleeve, and the rotating sleeve is nested and rotates on the cylindrical table; the rotating sleeve and the arc sliding sleeve are provided with structures which lock the rotating sleeve at the middle position of the arc sliding sleeve and at the limit position of one end in the arc sliding sleeve and are driven by the sliding rod, the structures unlock the position of the rotating sleeve at the middle part in the arc sliding sleeve when the cylindrical table swings from the vertical state and lock the limit position of one end in the arc sliding sleeve when the cylindrical table swings from the inclined state to the vertical state; the arc-shaped sliding sleeve is provided with a structure for locking the impact block farthest from the rotating sleeve in the arc-shaped sliding sleeve, and the structure locks the position of the impact block farthest from the rotating sleeve when the cylindrical table swings from the vertical state and unlocks the position of the impact block farthest from the rotating sleeve when the cylindrical table swings from the inclined state to the vertical state.

As a further improvement of the technology, the slide bar slides in a chute A in the cylindrical table, and a circular plate moves in a circular groove A at the top of the chute A; two guide blocks A are symmetrically arranged on the sliding rod and respectively slide in two guide grooves A on the inner wall of the sliding groove A. The guide block A is matched with the guide groove A to play a positioning and guiding role in the vertical sliding of the sliding rod in the sliding groove A. The spring A is positioned in the annular groove A on the inner wall of the sliding groove A; one end of the spring A is connected with the inner wall of the annular groove A, and the other end of the spring A is connected with a tension spring ring A arranged on the sliding rod; a circular ring A is nested and installed on the cylindrical table and rotates in a circular groove C on the inner wall of the rotating sleeve; a sliding block vertically slides in the sliding chute A, a rack B arranged at the upper end of the sliding block is meshed with a straight gear B arranged in the sliding chute A, the straight gear B is connected with a coaxial straight gear A through a shaft sleeve, and the straight gear A is meshed with a rack A arranged at the lower end of the sliding rod; the outer side of the cylindrical table is provided with a ring groove B, and a ring sleeve A is rotationally matched in the ring groove B; the ring sleeve A is fixedly connected with the sliding block through four connecting blocks which are uniformly distributed in the circumferential direction, and the four connecting blocks vertically slide in four sliding chutes B which are arranged on the inner wall of the sliding chute A and communicated with the annular groove B respectively; two guide blocks B are symmetrically arranged on the rotating sleeve and respectively slide in two guide grooves B on the inner wall of the arc-shaped ring sleeve. The guide block B is matched with the guide groove B to play a role in positioning and guiding the sliding of the ring sleeve in the arc-shaped sliding sleeve around the central axis of the arc-shaped sliding sleeve. The inner wall of the rotating sleeve is symmetrically provided with two sliding chutes C communicated with the outer side of the rotating sleeve, each sliding chute C is internally provided with an outer sleeve matched with the ring groove E on the ring sleeve A in a sliding manner, and the inner wall of the ring groove E is provided with a transition inclined plane convenient for the outer sleeve to slide out of the ring groove E along the central axis of the cylindrical table; each outer sleeve is nested with a spring B for resetting the outer sleeve; a limiting block A matched with a limiting groove A and a limiting groove B on the inner wall of the corresponding side of the arc-shaped sliding sleeve is arranged in each outer sleeve in a sliding manner; each outer sleeve is internally provided with a spring C for resetting the corresponding limiting block A; the impact block is symmetrically provided with two guide blocks E which respectively slide in two guide grooves B on the inner wall of the arc-shaped sliding sleeve. The matching of the guide block E and the guide groove B plays a role in positioning and guiding the impact block to slide in the arc-shaped sliding sleeve around the central axis of the arc-shaped sliding sleeve. The impact block is matched with two limiting blocks B sliding in two sliding grooves D symmetrically distributed near the tail end of the inner wall of the arc-shaped sliding sleeve; a trigger block A matched with the corresponding side limiting block A slides in each limiting groove A, and a trigger block B matched with the corresponding side limiting block A slides in each limiting groove B; the trigger block A, the trigger block B and the limiting block B on the same side are arranged on the same connecting rod, and the connecting rod slides in a sliding chute E which is communicated with the limiting groove A, the limiting groove B and the sliding chute D on the same side in the arc-shaped sliding sleeve; two springs D for resetting the corresponding connecting rods are symmetrically arranged in the sliding groove E; one end of the spring D is connected with the connecting rod, and the other end of the spring D is connected with the inner wall of the sliding groove E.

As a further improvement of the technology, the spring B is positioned in a ring groove D on the inner wall of the corresponding chute C; one end of the spring B is connected with the inner wall of the corresponding ring groove D, and the other end of the spring B is connected with a tension spring ring B arranged on the corresponding outer sleeve; two guide blocks C are symmetrically arranged on the limiting block A, and the two guide blocks C respectively slide in the two guide grooves C on the inner wall of the corresponding outer sleeve. The cooperation of guide block C and guide way C plays the location guide effect to stopper A's slip in corresponding overcoat, guarantees simultaneously that spring C is in compression energy storage state all the time. One end of the spring C is connected with the inner wall of the corresponding outer sleeve, and the other end of the spring C is connected with the end face of the corresponding limiting block A.

As a further improvement of the technology, the bottom of the impact cone is uniformly and densely provided with impact teeth; the limiting groove A is positioned in the middle of the inner wall of the corresponding side of the arc-shaped sliding sleeve, and the limiting groove B and the sliding groove D are respectively positioned near two ends of the inner wall of the corresponding side of the arc-shaped sliding sleeve; the radian of the limiting groove B along the sliding direction of the rotating sleeve relative to the arc-shaped sliding sleeve is greater than that of the limiting groove A.

As a further improvement of the technology, the swing limiting mechanism comprises a ring sleeve B, a shaft A, a bevel gear B, a ring sleeve C, an internal thread sleeve, an arc plate, a ring sleeve D, a winding wheel and a steel wire rope B, wherein radial shafts A are respectively matched in a plurality of circular grooves B uniformly arranged on the side wall of the ring sleeve B in a rotating mode; each shaft A is provided with a bevel gear A, and two adjacent bevel gears A are simultaneously meshed with a bevel gear B arranged on the inner wall of the ring sleeve B; each shaft A is in threaded fit with an internal thread sleeve, and the internal thread sleeve radially slides in a ring sleeve C arranged at a corresponding circular groove B; the tail end of the internal thread sleeve is provided with an arc plate matched with the inner wall of the drill hole; a winding wheel is arranged on one shaft A and is positioned in the accommodating groove on the inner wall of the corresponding circular groove B; the winding wheel is wound with a plurality of circles of steel wire ropes B, two ends of each steel wire rope B are connected with an electric module arranged on the percussion drilling machine, and the electric module drives the winding wheel to rotate through the steel wire ropes B; a ring sleeve D with the same central axis is arranged in the ring sleeve B through a plurality of fixed rods which are uniformly distributed in the circumference; the ring sleeve D is matched with a swing rod in the percussion drill mechanism.

As a further improvement of the technology, the internal thread sleeve is symmetrically provided with two guide blocks D which respectively slide in two guide grooves D on the inner wall of the ring sleeve C. The guide block D is matched with the guide groove D to play a role in positioning and guiding the axial sliding of the internal thread sleeve in the corresponding ring sleeve C. And a shield for isolating the bevel gear A and the bevel gear B from the slurry is arranged on the inner wall of the ring sleeve B.

Compared with the traditional pile foundation impact drill, the impact drilling mechanism performs impact drilling operation on a rock stratum under the reciprocating traction of the steel wire rope A, when the impact drilling mechanism encounters a karst cave and reaches a steep slope at the bottom of the karst cave, the steel wire rope A is used for repeatedly pulling the impact drilling mechanism to swing around a contact point of the impact drilling mechanism and the slope at the bottom of the karst cave in a small amplitude manner, so that a collision block in the impact drilling mechanism violently collides the impact cone in the process that the impact drilling mechanism swings from an inclined state to a vertical state, the impact cone horizontally impacts the contact point of the impact cone and the slope at the bottom of the karst cave, a platform convenient for the impact drilling mechanism to perform vertical impact drilling on the bottom of the karst cave is finally formed, and the impact drilling mechanism continues to perform vertical impact drilling operation on the platform. A large amount of stones do not need to be put into the karst cave in the whole impact drilling process, so that the mud used for protecting the hole wall and discharging slag in the drill hole caused by insufficient preparation amount of the stones is prevented from being lost in a large amount, meanwhile, the impact drilling at the bottom of the karst cave caused by unreasonable putting positions of the stones caused by insufficient experience in putting the stones is prevented from generating deflection, and the impact drilling efficiency of karst geology is effectively improved. In addition, when the percussion drill mechanism runs into gentle cave bottom slope, the swing limiting mechanism matched with the percussion drill mechanism limits the swing of the percussion cone around the contact point of the percussion cone and the cave bottom slope, so that the percussion drill mechanism vertically performs small-amplitude reciprocating impact on the gentle cave bottom slope under the action of self weight and finally forms vertical drilling holes on the gentle cave bottom slope, the impact of the percussion drill mechanism on an impact block is effectively reduced, the equipment loss is reduced, and the service life of the equipment is prolonged. The invention has simple structure and better use effect.

Drawings

FIG. 1 is a schematic cross-sectional view of the impact drilling mechanism and the swing limiting mechanism matched with the bottom slope of the drill hole and the karst cave.

FIG. 2 is a schematic cross-sectional view of the pendulum-limiting mechanism in cooperation with a borehole.

Fig. 3 is a schematic sectional view of the hammer drill mechanism.

Fig. 4 is a schematic section view of the matching of a cylindrical table, a sliding block, a connecting block, a ring sleeve A, an outer sleeve, a limiting block A, a triggering block A, a connecting rod, an arc-shaped sliding sleeve and a rotating sleeve.

Fig. 5 is a schematic section view of the arc-shaped sliding sleeve, the connecting rod, the trigger block A, the trigger block, the limiting block A, the rotating sleeve, the impact block and the limiting block B in cooperation.

FIG. 6 is a schematic section view of the impact block, the limiting block B, the connecting rod, the spring D and the arc-shaped sliding sleeve.

FIG. 7 is a schematic view of an impact cone and its cross-section.

FIG. 8 is a schematic sectional view of the arc sliding sleeve and two viewing angles thereof.

Fig. 9 is a schematic cross-sectional view of the swivel sleeve.

Figure 10 is a cross-sectional view of the cuff a.

Fig. 11 is a schematic sectional view of the slide bar, the rack a, the spur gear a, the shaft sleeve, the spur gear B, the rack B, and the slide block.

Fig. 12 is a schematic view of a swing limiting mechanism.

Fig. 13 is a schematic top sectional view of the swing restricting mechanism.

Fig. 14 is a partial sectional schematic view of the swing limiting mechanism.

Fig. 15 is a schematic cross-sectional view of a cuff B.

Number designation in the figures: 1. drilling; 2. karst cave; 3. a slope; 4. a percussion drill mechanism; 5. an impact cone; 6. an impact tooth; 7. a cylindrical table; 8. a circular groove A; 9. a chute A; 10. a ring groove A; 11. a guide groove A; 12. a ring groove B; 13. a chute B; 14. rotating the sleeve; 15. a ring groove C; 16. a chute C; 17. a ring groove D; 18. a circular ring A; 19. a slide bar; 20. a guide block A; 21. a spring A; 22. a tension spring ring A; 23. a circular plate; 24. a trigger lever; 25. a swing rod; 26. a rack A; 27. a straight gear A; 28. a shaft sleeve; 29. a spur gear B; 30. a rack B; 31. a slider; 32. connecting blocks; 33. a ring sleeve A; 34. a ring groove E; 35. a transition bevel; 36. a jacket; 37. a guide groove C; 38. a spring B; 39. a tension spring ring B; 40. a limiting block A; 41. a guide block C; 42. a spring C; 43. a guide block B; 44. an arc-shaped sliding sleeve; 45. a guide groove B; 46. a limiting groove A; 47. a limiting groove B; 48. a chute D; 49. a chute E; 50. a connecting rod; 51. a spring D; 52. triggering a block A; 53. a trigger block B; 54. a limiting block B; 55. an impact block; 56. a guide block E; 57. a steel wire rope A; 58. a swing limiting mechanism; 59. a ring sleeve B; 60. a circular groove B; 61. accommodating grooves; 62. an axis A; 63. a bevel gear A; 64. a bevel gear B; 65. c, sleeving a ring sleeve; 66. a guide groove D; 67. an internal thread sleeve; 68. a guide block D; 69. an arc plate; 70. a ring sleeve D; 71. fixing the rod; 72. a winding wheel; 73. a steel wire rope B; 74. a shield.

Detailed Description

The drawings are schematic illustrations of the implementation of the present invention to facilitate understanding of the principles of structural operation. The specific product structure and the proportional size are determined according to the use environment and the conventional technology.

As shown in fig. 1 and 2, the rock-drilling device comprises a percussion drill mechanism 4 and a swing-limiting mechanism 58, wherein as shown in fig. 1, the percussion drill mechanism 4 is hung on a steel wire rope a57 of a percussion drilling machine, and the percussion drill mechanism 4 performs reciprocating impact crushing on a rock stratum under the reciprocating traction of the steel wire rope a57, so that a percussion drill hole 1 is formed on the rock stratum; as shown in fig. 1, 2 and 3, when the impact drilling mechanism 4 meets and reaches the steep slope 3 at the bottom of the karst cave 2, the impact drilling mechanism 4 is pulled to and fro through a steel wire rope a57, an impact block 55 carried by the impact drilling mechanism 4 impacts the impact drilling mechanism 4 in the process that the impact drilling mechanism 4 swings back to the vertical state from the inclined state around the contact point of the impact drilling mechanism 4 and the slope 3 at the bottom of the karst cave 2, the impact drilling mechanism 4 impacts the contact part of the impact drilling mechanism 4 and the slope 3 at the bottom of the karst cave 2 under the reciprocating impact action of the impact block 55 and finally forms a platform on the slope 3 at the bottom of the karst cave 2 for allowing the impact drilling mechanism 4 to perform straight-up and straight-down impact drilling 1 operation;

as shown in fig. 1 and 2, the percussion drill mechanism 4 is provided with a swing limiting mechanism 58 matched with the hole wall of the drill hole 1, and the swing limiting mechanism 58 matched with the percussion drill mechanism 4 prevents the percussion drill mechanism 4 reaching the gentle slope 3 at the bottom of the karst cave 2 from swinging and assists the percussion drill mechanism 4 in vertically percussion-drilling the gentle slope 3 at the bottom of the karst cave 2.

As shown in fig. 3 and 4, the percussion drill mechanism 4 includes a percussion cone 5, a rotary sleeve 14, a sliding rod 19, a spring a21, a circular plate 23, a trigger lever 24, a swing link 25, an arc sliding sleeve 44, and an impact block 55, wherein as shown in fig. 2, 3, and 7, the top end of the five-claw-shaped percussion cone 5 has a cylindrical table 7, the top end of the cylindrical table 7 is ball-hinged with the swing link 25 connected with a steel wire rope a57, and the swing link 25 is engaged with a swing limiting mechanism 58; as shown in fig. 3 and 4, a sliding rod 19 vertically slides in the middle of the impact cone 5, and a spring a21 for resetting the sliding rod 19 is nested on the sliding rod 19; a circular plate 23 arranged at the top end of the sliding rod 19 is in contact fit with a trigger rod 24 arranged at the tail end of a swing rod 25; the arc-shaped sliding sleeve 44 is internally provided with a rotating sleeve 14 and an impact block 55 which are mutually impacted and matched in a sliding way around the central axis of the arc-shaped sliding sleeve, and the rotating sleeve 14 is nested and rotates on the cylindrical table 7; as shown in fig. 4, 5 and 6, the rotary sleeve 14 and the arc-shaped sliding sleeve 44 are provided with a structure which locks the rotary sleeve 14 at the middle position of the arc-shaped sliding sleeve 44 and at one end limit position in the arc-shaped sliding sleeve 44 and is driven by the sliding rod 19, and the structure unlocks the position of the rotary sleeve 14 at the middle position in the arc-shaped sliding sleeve 44 when the cylindrical table 7 swings from the vertical state and locks the limit position of the rotary sleeve 14 at one end in the arc-shaped sliding sleeve 44 when the cylindrical table 7 swings from the inclined state to the vertical state; the arc-shaped sliding bush 44 is provided with a structure for locking the impact block 55 farthest from the rotary sleeve 14 in the arc-shaped sliding bush 44, and the structure locks the position of the impact block 55 farthest from the rotary sleeve 14 when the cylindrical table 7 swings from the vertical state and unlocks the position of the impact block 55 farthest from the rotary sleeve 14 when the cylindrical table 7 swings from the inclined state to the vertical state.

As shown in fig. 3, 4 and 7, the sliding rod 19 slides in the sliding groove a9 in the column table 7, and the circular plate 23 moves in the circular groove A8 at the top of the sliding groove a 9; the slide bar 19 is symmetrically provided with two guide blocks A20, and the two guide blocks A20 slide in two guide grooves A11 on the inner wall of the slide groove A9 respectively. The cooperation of the guide block A20 and the guide groove A11 plays a positioning and guiding role for the vertical sliding of the slide bar 19 in the slide groove A9. The spring A21 is positioned in a ring groove A10 on the inner wall of the sliding groove A9; one end of the spring A21 is connected with the inner wall of the ring groove A10, and the other end is connected with a tension spring ring A22 arranged on the sliding rod 19; a circular ring A18 is nested on the cylindrical table 7, and a circular ring A18 rotates in a circular groove C15 on the inner wall of the rotating sleeve 14; as shown in fig. 3, 4 and 11, a slide block 31 vertically slides in a slide groove a9, a rack B30 installed at the upper end of the slide block 31 is meshed with a spur gear B29 installed in a slide groove a9, the spur gear B29 is connected with a coaxial spur gear a27 through a shaft sleeve 28, and a spur gear a27 is meshed with a rack a26 installed at the lower end of a slide rod 19; as shown in fig. 4, 7 and 10, a ring groove B12 is formed on the outer side of the cylindrical table 7, and a ring sleeve a33 is rotationally matched in the ring groove B12; the ring sleeve A33 is fixedly connected with the sliding block 31 through four connecting blocks 32 which are uniformly distributed in the circumferential direction, and the four connecting blocks 32 respectively vertically slide in four sliding grooves B13 which are arranged on the inner wall of the sliding groove A9 and communicated with the annular groove B12; as shown in fig. 3, 4 and 8, two guide blocks B43 are symmetrically mounted on the rotating sleeve 14, and two guide blocks B43 are respectively slid in two guide grooves B45 on the inner wall of the arc-shaped ring sleeve. The matching of the guide block B43 and the guide groove B45 plays a positioning and guiding role for the sliding of the ring sleeve in the arc-shaped sliding sleeve 44 around the central axis of the arc-shaped sliding sleeve 44. As shown in fig. 4, 9 and 10, the inner wall of the rotating sleeve 14 is symmetrically provided with two sliding grooves C16 communicated with the outer side thereof, each sliding groove C16 is internally provided with an outer sleeve 36 matched with a ring groove E34 on the ring sleeve a33 in a sliding manner, and the inner wall of the ring groove E34 is provided with a transition inclined surface 35 facilitating the outer sleeve 36 to slide out of the ring groove E34 along the central axis of the cylindrical table 7; each outer sleeve 36 is nested with a spring B38 for resetting the outer sleeve; a limiting block A40 matched with a limiting groove A46 and a limiting groove B47 on the inner wall of the corresponding side of the arc-shaped sliding sleeve 44 is arranged in each outer sleeve 36 in a sliding manner; a spring C42 for resetting the corresponding limit block A40 is arranged in each outer sleeve 36; as shown in fig. 3, 6 and 8, two guide blocks E56 are symmetrically mounted on the impact block 55, and two guide blocks E56 slide in two guide grooves B45 on the inner wall of the arc-shaped sliding sleeve 44, respectively. The cooperation of the guide block E56 and the guide groove B45 plays a positioning and guiding role for the sliding of the striking block 55 in the arc-shaped sliding sleeve 44 around the central axis of the arc-shaped sliding sleeve 44. As shown in fig. 5, 6 and 8, the impact block 55 is engaged with two limit blocks B54 sliding in two sliding grooves D48 symmetrically distributed near the end of the inner wall of the arc-shaped sliding sleeve 44; a trigger block A52 matched with the corresponding side limiting block A40 slides in each limiting groove A46, and a trigger block B53 matched with the corresponding side limiting block A40 slides in each limiting groove B47; the trigger block A52, the trigger block B53 and the limit block B54 on the same side are installed on the same connecting rod 50, and the connecting rod 50 slides in a sliding groove E49 which is communicated with the limit groove A46, the limit groove B47 and the sliding groove D48 on the same side in the arc-shaped sliding sleeve 44; two springs D51 for resetting the corresponding connecting rod 50 are symmetrically arranged in the sliding groove E49; one end of the spring D51 is connected with the connecting rod 50, and the other end is connected with the inner wall of the chute E49.

As shown in fig. 4 and 9, the spring B38 is located in the annular groove D17 on the inner wall of the corresponding chute C16; one end of the spring B38 is connected with the inner wall of the corresponding ring groove D17, and the other end is connected with a tension spring ring B39 arranged on the corresponding outer sleeve 36; the limiting block A40 is symmetrically provided with two guide blocks C41, and the two guide blocks C41 respectively slide in two guide grooves C37 on the inner wall of the corresponding outer sleeve 36. The guide block C41 and the guide groove C37 are matched to play a positioning and guiding role in sliding the limit block A40 in the corresponding outer sleeve 36, and meanwhile, the spring C42 is guaranteed to be in a compression energy storage state all the time. One end of the spring C42 is connected with the inner wall of the corresponding outer sleeve 36, and the other end is connected with the end face of the corresponding limit block A40.

As shown in fig. 7, the bottom of the impact cone 5 is evenly and densely provided with impact teeth 6; as shown in fig. 5 and 8, the limiting groove a46 is located in the middle of the inner wall of the arc-shaped sliding sleeve 44 at the corresponding side, and the limiting groove B47 and the sliding groove D48 are located near the two ends of the inner wall of the arc-shaped sliding sleeve 44 at the corresponding side, respectively; the radian of the limiting groove B47 along the sliding direction of the rotary sleeve 14 relative to the arc-shaped sliding sleeve 44 is larger than that of the limiting groove A46.

As shown in fig. 12, 13, and 14, the swing limiting mechanism 58 includes a ring sleeve B59, a shaft a62, a bevel gear a63, a bevel gear B64, a ring sleeve C65, an internal thread sleeve 67, an arc plate 69, a ring sleeve D70, a winding wheel 72, and a steel wire rope B73, wherein as shown in fig. 13, 14, and 15, radial shafts a62 are respectively rotatably fitted in a plurality of circular grooves B60 uniformly formed in the circumferential direction on the side wall of the ring sleeve B59; each shaft A62 is provided with a bevel gear A63, and two adjacent bevel gears A63 are simultaneously meshed with a bevel gear B64 arranged on the inner wall of a ring sleeve B59; each shaft A62 is in threaded fit with an internal threaded sleeve 67, and the internal threaded sleeve 67 slides radially in a ring sleeve C65 arranged at a corresponding circular groove B60; as shown in fig. 2, 14 and 15, the tail end of the internal thread sleeve 67 is provided with an arc plate 69 matched with the inner wall of the drill hole 1; a winding wheel 72 is mounted on one shaft a62, and the winding wheel 72 is positioned in the receiving groove 61 on the inner wall of the corresponding circular groove B60; a plurality of rings of steel wire ropes B73 are wound on the winding wheel 72, two ends of each steel wire rope B73 are connected with an electric module arranged on the percussion drilling machine, and the electric module drives the winding wheel 72 to rotate through the steel wire ropes B73; as shown in fig. 2, 12 and 13, a ring sleeve D70 with the same central axis is arranged in the ring sleeve B59 through a plurality of fixing rods 71 which are uniformly distributed in the circle; the ring sleeve D70 is matched with the swing rod 25 in the percussion drill mechanism 4.

As shown in fig. 14, two guide blocks D68 are symmetrically installed on the internal thread sleeve 67, and the two guide blocks D68 are respectively slid into two guide slots D66 on the inner wall of the ring sleeve C65. The guide block D68 is matched with the guide groove D66 to play a positioning and guiding role in the axial sliding of the internal thread sleeve 67 in the corresponding ring sleeve C65. As shown in fig. 12, 13 and 14, a shield 74 for isolating the bevel gear a63 and the bevel gear B64 from mud is mounted on the inner wall of the ring sleeve B59.

The working process of the invention is as follows: in an initial state, the percussion drill mechanism 4 is hung in the air by a steel wire rope A57, the swing rod 25 and the percussion cone 5 are both in a vertical state, and the tail end of the trigger rod 24 is propped against the central part of the circular plate 23. The two limit blocks A40 are respectively inserted into the two limit grooves A46 on the inner wall of the arc-shaped sliding sleeve 44 and respectively abut against the corresponding trigger blocks A52, so as to lock the position of the rotating sleeve 14 in the middle of the arc-shaped sliding sleeve 44. The tail ends of the two outer sleeves 36 are abutted against the outer cylindrical surface of the ring sleeve A33, the spring A21, the spring B38, the spring C42 and the spring D51 are all in a compression energy storage state, and the two limit blocks B54 are all contracted in the corresponding sliding grooves D48. The impact block 55 is tightly attached to the rotary sleeve 14, the impact block 55 shields the two sliding grooves D48, and the two limit blocks B54 are simultaneously abutted against the side wall of the impact block 55.

When the steel wire rope A57 drives the percussion drill mechanism 4 to vertically perform percussion drilling 1 on a rock stratum, in the interaction process of the percussion cone 5 and the rock stratum, due to the looseness of the steel wire rope A57, the swing rod 25 swings around a spherical hinge under the action of self weight, the swing rod 25 drives the trigger rod 24 to swing synchronously, the tail end of the trigger rod 24 swings from the middle of the circular plate 23 to the edge direction of the circular plate, the sliding rod 19 drives the circular plate 23 to vertically move upwards under the action of the spring A21, and the circular plate 23 is always abutted against the trigger rod 24. The slide rod 19 drives the ring sleeve A33 to axially vertically and downwardly rapidly move relative to the cylindrical table 7 through the rack A26, the straight gear A27, the shaft sleeve 28, the straight gear B29, the rack B30, the slide block 31 and the connecting block 32, and the tail ends of the two outer sleeves 36 rapidly move towards the annular groove E34 on the ring sleeve A33 and rapidly enter the annular groove E34 under the action of the corresponding spring B38. The two outer sleeves 36 respectively drive the corresponding limit blocks A40 to be separated from the corresponding limit grooves A46 through the corresponding two guide blocks C41, the position locking of the rotating sleeve 14 in the middle of the inner part of the arc-shaped sliding sleeve 44 is released, and the arc-shaped sliding sleeve 44 does not move relative to the rotating sleeve 14 under the action of self weight. Meanwhile, the two connecting rods 50 respectively drive the trigger block a52, the trigger block B53 and the limiting block B54 which are installed on the connecting rods 50 to move under the action of the corresponding two springs D51, the two trigger blocks a52 respectively drive the corresponding connecting rods 50 to further penetrate into the limiting groove a46, the two trigger blocks B53 respectively drive the corresponding connecting rods 50 to further penetrate into the limiting groove B47, and the two limiting blocks B54 respectively drive the corresponding connecting rods 50 to slide out of the corresponding sliding grooves D48. Since the striking block 55 is in a shielding state for the two sliding slots D48, the two limit blocks B54 abut against the striking block 55 and do not slide out of the sliding slot D48, so that the two connecting rods 50 do not move, and the trigger block a52 and the trigger block B53 mounted on each connecting rod 50 do not move.

When the steel wire rope A57 continues to be tightened and the swing rod 25 is pulled vertically upwards, the swing rod 25 swings to a vertical state from an inclined state relative to the impact cone 5 instantly, the swing rod 25 drives the trigger rod 24 to reach the middle position of the circular plate 23 from the edge position of the circular plate 23, the trigger rod 24 drives the sliding rod 19 to vertically slide downwards relative to the cylindrical table 7 through the circular plate 23, and the spring A21 is further compressed to store energy. The slide rod 19 moves vertically and upwardly rapidly relative to the cylindrical table 7 through a series of driving ring sleeves A33, and the tail ends of the two outer sleeves 36 are rapidly separated from the ring groove E34 through the transition inclined surface of the ring groove E34 and are abutted against the outer cylindrical surface of the ring sleeve A33. The two springs B38 are further compressed to store energy at the same time, and the two outer sleeves 36 respectively drive the corresponding limit blocks A40 to be rapidly inserted into the corresponding limit grooves A46 through the corresponding springs C42 and form locking for the position of the rotating sleeve 14 in the middle of the arc-shaped sliding sleeve 44.

The impact drilling mechanism 4 is pulled by the steel wire rope A57 in a reciprocating mode in such a way and performs impact drilling 1 in the vertical direction on the rock stratum, when the impact drilling mechanism 4 meets the underground karst cave 2 and reaches the steep slope 3 at the bottom of the karst cave 2, the steel wire rope A57 stops large-amplitude traction on the impact cone 5, the impact cone 5 is pulled in a small amplitude through the steel wire rope A57, and the impact cone 5 is guaranteed to swing back and forth around the contact point of the impact cone 5 and the slope 3 at the bottom of the karst cave 2 on the premise of not deviating from the steep slope 3 at the bottom of the karst cave 2.

When the steel wire rope A57 is lowered by a small amplitude, the impact cone 5 swings around the contact point of the impact cone and the slope 3 at the bottom of the karst cave 2 under the action of self weight, the arc-shaped sliding sleeve 44 drives the rotating sleeve 14 to rotate relative to the cylindrical table 7 under the action of torque generated by the impact block 55 around the central axis of the cylindrical table 7, and finally the impact block 55 is positioned at the lower side of the inclined cylindrical table 7. At the same time, the swing rod 25 swings relative to the impact cone 5 under the traction of the steel wire rope A57. The swing rod 25 drives the trigger rod 24 to reach the edge of the circular plate 23 from the middle of the circular plate 23, the sliding rod 19 drives the circular plate 23 to axially move towards the top end of the cylindrical table 7 under the action of the spring A21, and the sliding rod 19 axially and rapidly moves towards the bottom of the impact cone 5 through a series of driving belt moving ring sleeves A33. Under the action of the corresponding spring B38, the tail ends of the two outer sleeves 36 respectively enter the ring grooves E34 on the ring sleeve A33, the two outer sleeves 36 respectively drive the corresponding limit blocks A40 to slide out of the corresponding limit grooves A46 through the corresponding two guide blocks C41 to retract into the corresponding slide grooves C16, the locking of the middle position of the rotating sleeve 14 in the arc-shaped sliding sleeve 44 is released, and the impact block 55 still presses the two limit blocks B54. The arc-shaped sliding bush 44 slides relative to the rotary sleeve 14 in the direction of the lower side of the inclined rotary sleeve 14 under the action of gravity, and simultaneously the impact block 55 slides rapidly relative to the arc-shaped sliding bush 44 in the direction of the terminal limit position in the arc-shaped sliding bush 44 under the action of gravity.

When the arc sliding sleeve 44 slides to the limit relative to the rotating sleeve 14, the rotating sleeve 14 and the striking block 55 are respectively located at the limit positions at both ends in the arc sliding sleeve 44, the striking block 55 just goes over the two limit blocks B54 and releases the pressing on the two limit blocks B54, and the two outer sleeves 36 on the rotating sleeve 14 are respectively opposite to the limit grooves B47 on the same side wall in the arc sliding sleeve 44. The two connecting rods 50 respectively drive the limiting blocks B54 arranged on the connecting rods to instantly slide out of the corresponding sliding grooves D48 under the action of the corresponding two springs D51 and limit the backward sliding of the impact block 55 in the arc-shaped sliding sleeve 44, the two trigger blocks A52 respectively penetrate into the corresponding limiting grooves A46 under the drive of the corresponding connecting rods 50 and do not limit the backward sliding of the rotary sleeve 14 in the arc-shaped sliding sleeve 44, and the two trigger blocks B53 respectively penetrate into the corresponding limiting grooves B47 under the drive of the corresponding connecting rods 50 and do not limit the backward sliding of the rotary sleeve 14 in the arc-shaped sliding sleeve 44.

When the swing rod 25 swings from an inclined state to a vertical state under the traction of the steel wire rope A57, the swing rod 25 drives the trigger rod 24 to move from the edge position of the circular plate 23 to the middle position of the circular plate 23, the circular plate 23 drives the sliding rod 19 to reset in the cylindrical table 7 under the abutting pressure of the trigger rod 24, and the spring A21 is further compressed to store energy. The slide rod 19 is reset rapidly relative to the cylindrical table 7 through a series of driving ring sleeves A33, the two outer sleeves 36 are rapidly abutted against the outer cylindrical surface of the ring sleeve A33 through transition inclined surfaces of ring grooves E34 on the ring sleeve A33, and the two springs B38 are further compressed to store energy. The two outer sleeves 36 respectively drive the corresponding limiting blocks A40 to be inserted into the corresponding limiting grooves B47 through the corresponding springs C42 and abut against the corresponding trigger blocks B53. Meanwhile, as the swing rod 25 swings in the vertical direction under the traction of the steel wire rope A57, the impact cone 5 swings back in the vertical direction around the contact point of the impact cone and the slope 3 at the bottom of the karst cave 2, and the arc-shaped sliding sleeve 44 is to be reset relative to the rotating sleeve 14 under the action of the self-weight and the gravity of the impact block 55. Because the radian of the limiting groove B47 around the central axis of the arc-shaped sliding sleeve 44 is greater than the radian of the limiting groove A46 around the central axis of the arc-shaped sliding sleeve 44, in the process of resetting the arc-shaped sliding sleeve 44 relative to the rotary sleeve 14, the two limiting blocks A40 cannot be instantaneously dislocated with the corresponding limiting groove B47, the two limiting blocks A40 still smoothly insert into the limiting groove B47 and limit the limit position of the rotary sleeve 14 at one end in the arc-shaped sliding sleeve 44 when the arc-shaped sliding sleeve 44 and the rotary sleeve 14 slide relative to each other, and the resetting of the arc-shaped sliding sleeve 44 relative to the rotary sleeve 14 is prevented.

When the two limit blocks A40 are respectively and completely inserted into the corresponding limit grooves A46, the two limit blocks A40 respectively drive the corresponding connecting rods 50 to reset in the arc-shaped sliding sleeves 44 through the corresponding trigger blocks B53, and the two springs D51 are further compressed to store energy. The two connecting rods 50 respectively drive the corresponding trigger block A52 and the limiting block B54 to reset, the two trigger blocks A52 are respectively contracted again into the corresponding limiting grooves A46, and the two limiting blocks B54 are respectively contracted again into the corresponding sliding grooves D48 and release the locking of the limiting position of one end of the impact block 55 in the arc-shaped sliding sleeve 44.

The impact block 55 slides rapidly along the arc-shaped sliding sleeve 44 towards the rotating sleeve 14 under the action of self weight and finally collides violently with the rotating sleeve 14, the impact cone 5 is driven by the cylindrical table 7 to impact horizontally at the contact point of the impact cone 5 and the bottom slope 3 of the karst cave 2 in a violence collision state, a pit is formed at the contact point of the bottom slope 3 of the karst cave 2, the impact drilling mechanism 4 is pulled to swing around the contact point of the impact cone 5 and the bottom slope 3 of the karst cave 2 with small amplitude for a plurality of times along with the steel wire rope A57, the impact block 55 impacts violently on the impact cone 5 for a plurality of times, and the impact cone 5 impacts transversely at the contact point of the impact cone 5 and the bottom slope 3 of the karst cave 2 for a plurality of times continuously and finally impacts at the contact point of the impact cone 5 and the bottom slope 3 of the karst cave 2 to form a platform which. After the platform is formed, the steel wire rope A57 restarts to pull the percussion drill mechanism 4 to reciprocate greatly, performs reciprocating impact on the bottom of the platform and finally forms the vertical percussion drill hole 1 on the slope 3 at the bottom of the karst cave 2, the whole process does not need to put in a large amount of rubbles, cost is saved, simultaneously, mud used for protecting the hole wall and discharging slag in the drill hole 1 is prevented from being lost in a large amount due to insufficient experience of putting in the rubbles, and the efficiency of the karst geological percussion drill hole 1 is improved.

When the percussion drilling mechanism 4 encounters the karst cave 2 with the lower bottom slope 3 in the process of percussion drilling 1, the percussion drilling mechanism 4 is vertically pulled out of the drilling 1 through a steel wire rope A57, the swing limiting mechanism 58 is matched with the percussion drilling mechanism 4, and the swing rod 25 is inserted into a ring sleeve D70 on the swing limiting mechanism 58 and is hung into the drilling 1 together with the percussion drilling mechanism 4. When the impact cone 5 reaches the gentle slope 3 at the bottom of the karst cave 2 again, the swing limiting mechanism 58 is kept above the karst cave 2. Starting an electric module connected with a steel wire rope B73 on the percussion drilling machine, driving a winding wheel 72 on a swing limiting mechanism 58 to rotate by the electric module through a steel wire rope B73, driving a corresponding shaft A62 to rotate by the winding wheel 72, driving a plurality of shafts A62 to synchronously rotate by a shaft A62 provided with the winding wheel 72 through a corresponding bevel gear A63 and an adjacent bevel gear B64, driving an internal thread sleeve 67 in threaded fit with each shaft A62 to radially extend outwards along a ring sleeve B59 in a corresponding ring sleeve C65, and forming the pressing on the hole wall of the drill hole 1 by an arc plate 69 arranged at the tail end of the internal thread sleeve 67, thereby realizing the purpose of fixedly supporting the swing limiting mechanism 58 in the drill hole 1, thereby realizing the swing limitation of the swing rod 25, leading the swing rod 25 to only generate vertical axial sliding relative to the ring sleeve D70, and further limits the swinging of the impact cone 5 around the contact point of the impact cone and the bottom slope 3 of the karst cave 2 under the action of the bottom gentle slope 3 of the karst cave 2.

At this moment, draw percussion drill mechanism 4 through wire rope A57 and carry out the small-amplitude motion of vertical direction for the impact cone 5 of small-amplitude motion strikes the gentle slope 3 of solution cavity 2 bottom, and finally strikes the pore-forming on the gentle slope 3 of solution cavity 2 bottom, effectively reduces percussion drill mechanism 4 and receives the frequency of striking piece 55 striking when meetting solution cavity 2, reduces the equipment loss, effective extension equipment life. Meanwhile, the impact drilling mechanism 4 is guaranteed to perform effective impact drilling 1 on the slope 3 at the bottom of the karst cave 2 under the condition that the rubble is not thrown into the karst cave 2 under the cooperation of the swing limiting mechanism 58. After the bottom of the karst cave 2 is impacted and drilled with the drill hole 1, the arc plate 69 on the swing limiting mechanism 58 is separated from the hole wall of the drill hole 1 by reversely pulling the steel wire rope B73, and the swing limiting mechanism 58 is hoisted out of the drill hole 1 and then is detached.

In conclusion, the beneficial effects of the invention are as follows: according to the invention, the percussion drilling 1 operation is carried out on the rock stratum under the reciprocating traction of the steel wire rope A57 through the percussion drilling mechanism 4, when the percussion drilling mechanism 4 meets the karst cave 2 and reaches the steep slope 3 at the bottom of the karst cave 2, the percussion drilling mechanism 4 is pulled to swing around the contact point of the percussion drilling mechanism 4 and the slope 3 at the bottom of the karst cave 2 in a small-amplitude reciprocating mode through the steel wire rope A57, so that the impact block 55 in the percussion drilling mechanism 4 violently impacts the impact cone 5 in the process that the percussion drilling mechanism 4 swings from an inclined state to a vertical state, the impact cone 5 carries out horizontal impact on the contact point of the impact cone 5 and the slope 3 at the bottom of the karst cave 2, a platform convenient for the percussion drilling 1 operation of the vertical percussion drilling on the bottom of the karst cave 2 by the percussion drilling mechanism 4 is finally formed, and the percussion. Whole 1 process of strikeing the drilling need not to put in a large amount of slabstones to in the karst cave 2 to avoid losing in a large number the mud that is used for protecting the pore wall and arrange the sediment in the drilling 1 that leads to because of the slabstone preparation volume is not enough, avoid simultaneously putting the position unreasonable and strikeing drilling 1 production skew in the karst cave 2 bottoms that leads to that the experience leads to because of the slabstone, effectively improve 1 efficiency of strikeing the drilling of karst geology. In addition, when the percussion drill mechanism 4 meets the bottom slope 3 of the gentle cave 2, the swing limiting mechanism 58 matched with the percussion drill mechanism 4 limits the swing of the percussion cone 5 around the contact point of the percussion cone and the bottom slope 3 of the cave 2, so that the percussion drill mechanism 4 vertically performs small-amplitude reciprocating impact on the bottom slope 3 of the gentle cave 2 under the action of self weight and finally forms the vertical drilling hole 1 on the gentle slope 3 at the bottom of the cave 2, the impact of the percussion drill mechanism 4 by the impact block 55 is effectively reduced, the equipment loss is reduced, and the service life of the equipment is prolonged.

The impact device is suitable for the condition that the karst cave is larger than that of the impact drill, and the impact drill cannot swing to work.