An anchor cable drilling rig for use in pebble formations

Abstract

This invention discloses an anchor cable drilling rig for use in pebble formations, comprising a transport vehicle and a bracket mounted on the transport vehicle. The bracket houses a power cylinder and a drill rod. A drill bit barrel and a fastening assembly are mounted outside the drill rod. The drill rod contains a rock-crushing assembly, a striking assembly, and an adjustment mechanism. When the adjustment mechanism operates, it drives the rock-crushing assembly downwards and the drill bit barrel upwards simultaneously, while an auxiliary assembly drives the fastening assembly to expand. During operation, the rock-crushing assembly downwards to strike larger rocks, while the drill bit barrel upwards, separating its bottom from the borehole wall. This facilitates the striking assembly in removing soil adhering to the drill bit barrel, preventing excessive soil clumps from affecting the drill bit's performance. Furthermore, the fastening assembly opens with the movement of the adjustment mechanism, and a rotating rod drives the opened fastening assembly to rotate, compressing and tightening the soft borehole wall.

Description

Technical Field

[0001] This invention relates to the field of drilling technology, and more specifically to an anchor cable drilling rig used in pebble formations. Background Technology

[0002] The main function of a drilling rig is to drive the drill string to break the rock at the bottom of the hole and to lower or lower the drill string into or out of the hole. It can be used to drill for core samples, ore cores, rock cuttings, gaseous samples, liquid samples, etc., to explore underground geology and mineral resources. Drilling rigs are required for anchor cable construction in some pebble strata.

[0003] For example, Chinese utility model patent application number 202120061673.3, entitled "An Anchoring Drilling Machine," discloses an anchoring drilling machine, including tracks, a platform fixedly connected to the upper part of the tracks, support frames penetrating both sides of the platform, a power unit fixedly connected to the middle of the platform, a grid plate fixedly connected to the surface of the power unit, a auger fixedly connected to the upper left side of the power unit, a first hydraulic cylinder movably connected to the middle of the auger, a first hydraulic rod movably connected to the upper part of the first hydraulic cylinder, a second hydraulic cylinder movably connected to the bottom left side of the power unit, a second hydraulic rod movably connected to the upper part of the second hydraulic cylinder, a drill arm movably connected to the upper left side of the platform, and a drill arm extension rod movably connected to the upper part of the drill arm. This utility model relates to the field of drilling rig technology. In this anchoring drilling machine, a water pump continuously supplies water to the drill rod through an inlet pipe during operation, and then discharges it through an opening to cool the drill rod and reduce dust generated during operation.

[0004] The shortcomings of existing technologies are as follows: gravel formations are mechanically unstable formations composed of sand and pebbles, characterized by uneven particle size, poor cohesion, and high permeability. Drilling rigs are prone to difficulties in drilling in gravel formations, and hole collapse is likely to occur during the drilling process. Collapsed mud and rocks can cause the drill bit and drilling tools to get stuck, resulting in slow hole formation and high wear and tear on drilling tools. Summary of the Invention

[0005] The purpose of this invention is to provide an anchor cable drilling rig for use in pebble formations, in order to overcome the above-mentioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an anchor cable drilling rig for use in pebble formations, comprising a transport vehicle and a bracket mounted on the transport vehicle. A power cylinder and a drill rod are mounted on the bracket. A drill bit cylinder and a fastening assembly are mounted outside the drill rod. A rock-crushing assembly, a striking assembly, and an adjustment mechanism are mounted inside the drill rod. When the adjustment mechanism operates, it drives the rock-crushing assembly to move downwards and the drill bit cylinder to move upwards synchronously. An auxiliary assembly drives the fastening assembly to expand. After the rock-crushing assembly moves and operates, a transmission assembly drives the striking assembly to move the drill bit cylinder, which then strikes and removes mud. The fastening assembly, rotating with the drill rod, secures the borehole to prevent collapse. After the fastening assembly expands a certain distance, the drill bit cylinder moves to the fastening assembly, and the expanded fastening assembly protects the drill bit cylinder to prevent the drill bit from being buried.

[0007] As a further description of the above technical solution:

[0008] The adjustment mechanism includes a cross frame rotatably connected in the drill pipe. On both sides of the cross frame are respectively a first shaped plate and a second shaped plate. The first shaped plate is connected to the inside of the drill bit barrel through multiple L-shaped rods.

[0009] As a further description of the above technical solution:

[0010] The fastening assembly includes multiple sets of connecting rods that are slidably connected to the drill pipe, and the same fastening plate is fixedly connected to multiple connecting rods located on the same straight line.

[0011] As a further description of the above technical solution:

[0012] The auxiliary component includes multiple sets of connecting blocks fixedly connected to corresponding connecting rods, and the connecting blocks are provided with inclined grooves. Multiple sets of vertical rods are fixedly connected to the irregular plate, and each vertical rod is fixedly connected with a sliding rod adapted to the inclined groove.

[0013] As a further description of the above technical solution:

[0014] The stone crushing assembly includes an impact cylinder fixedly connected to the second irregular plate, and a conical impact rod is slidably connected in the impact cylinder.

[0015] As a further description of the above technical solution:

[0016] The striking assembly includes multiple support blocks fixedly connected to the drill pipe, with crossbeams rotatably connected between adjacent support blocks. Each crossbeam is fixedly connected to an eccentric wheel, and the eccentric wheel has a track groove. Multiple translation plates are slidably connected to the drill pipe, with a side rod fixedly connected to and slidably connected in the track groove on each translation plate. Each translation plate is provided with a striking rod for striking the drill bit barrel.

[0017] As a further description of the above technical solution:

[0018] The transmission assembly includes friction rollers fixedly connected to the corresponding crossbeam rods, and each friction roller is in contact with the outer surface of the conical impact rod.

[0019] As a further description of the above technical solution:

[0020] The drill bit barrel is also equipped with a sealing assembly, which includes multiple sets of sealing plates that are elastically slidably connected in the drill bit barrel, and one side of each sealing plate is inclined.

[0021] As a further description of the above technical solution:

[0022] After the fastening assembly expands a certain distance, the drill bit barrel moves to the fastening assembly, and the expanded fastening assembly protects the drill bit barrel to prevent the drill bit from being buried.

[0023] As a further description of the above technical solution:

[0024] Multiple sets of fastening plates are arranged in a circular array with the drill pipe as the center. When the multiple sets of fastening plates are attached to the drill pipe, the radius of the cylindrical cross-section formed is smaller than the radius of the drill bit cylinder.

[0025] In the above technical solution, the anchor cable drilling rig for use in pebble formations provided by the present invention has the following beneficial effects:

[0026] This invention utilizes the coordinated operation of a transport vehicle, bracket, power cylinder, drill rod, drill bit barrel, fastening assembly, stone crushing assembly, striking assembly, adjustment mechanism, auxiliary assembly, and transmission assembly. When the adjustment mechanism operates, it causes the stone crushing assembly to move downwards to strike larger stones. Simultaneously, the drill bit barrel moves upwards, separating its bottom from the borehole wall. This facilitates the striking assembly in removing soil adhering to the drill bit barrel, preventing excessive soil clumps from affecting the drill bit's performance. Furthermore, the fastening assembly opens with the movement of the adjustment mechanism. At this time, the rotating rod drives the opened fastening assembly to rotate, compressing and tightening the soft borehole wall, preventing borehole collapse and ensuring drilling progress.

[0027] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0028] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0030] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0031] Figure 2 This is an exploded view of the drill pipe and drill bit barrel structure provided in an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram showing the structural connections of the impact component, the stone crushing component, and the adjustment mechanism provided in an embodiment of the present invention.

[0033] Figure 4 This is a schematic diagram showing the structural connection between the impact component and the stone crushing component provided in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the crushing component structure provided in an embodiment of the present invention;

[0035] Figure 6 This is a partial schematic diagram of the connection between the fastening component and the auxiliary component structure provided in an embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of the adjustment mechanism structure provided in an embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the sealing component structure provided in an embodiment of the present invention;

[0038] Figure 9 for Figure 6 Enlarged view of point A in the middle.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Transport vehicle; 11. Bracket; 12. Power cylinder; 13. Drill rod; 14. Drill bit barrel; 21. Cross frame; 22. Irregular plate one; 23. Irregular plate two; 24. L-shaped rod; 31. Connecting rod; 32. Fastening plate; 41. Connecting block; 42. Inclined groove; 43. Vertical rod; 44. Sliding rod; 51. Impact cylinder; 52. Conical impact rod; 61. Support block; 62. Crossbeam rod; 63. Eccentric wheel; 64. Track groove; 65. Translation plate; 66. Striking rod; 7. Friction roller; 8. Sealing plate. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0042] Please see Figure 1-9 This embodiment provides an anchor cable drilling rig for use in pebble strata, including a transport vehicle 1 and a bracket 11 mounted on the transport vehicle 1. The bracket 11 is equipped with a power cylinder 12 and a drill rod 13. The transport vehicle 1 is equipped with an adjustment device for adjusting the angle of the bracket 11 to reinforce the slope with anchor cables. The power cylinder 12 and drill rod 13 are existing configurations. The power cylinder 12 is connected to the drill rod 13 to drive its rotation and movement to achieve the drilling process. A drill bit cylinder 14 and a fastening assembly are mounted outside the drill rod 13. The drill bit cylinder 14 is slidably connected to one end of the drill rod 13, and a dynamic sealing ring is required between the drill bit cylinder 14 and the sidewall of the drill rod 13 to form a dynamic seal. The drill rod 13 contains a stone crushing assembly, a striking assembly, and an adjustment mechanism. When the adjustment mechanism is in operation... At the same time, the rock-crushing component moves downward and the drill bit barrel 14 moves upward synchronously. The auxiliary component drives and the fastening component expands. After the rock-crushing component moves, it works and the transmission component drives the moving drill bit barrel 14 to knock and remove mud. The fastening component rotates with the drill rod 13 to fasten the borehole and prevent collapse. When encountering larger rocks in the pebble strata, the adjustment mechanism switches the drill bit barrel 14 and the rock-crushing component to reduce damage to the drill bit barrel 14. The movement of the drill bit barrel 14 can separate the bottom of the borehole, so that when the striking component strikes the drill bit barrel 14, the mud and rocks stuck on the drill bit barrel 14 can fall off. The expanding fastening component rotates with the drill rod 13 to further fasten the sidewall of the borehole and reduce the possibility of borehole collapse.

[0043] In a further embodiment of the present invention, the adjustment mechanism includes a cross frame 21 rotatably connected to the drill rod 13. A first shaped plate 22 and a second shaped plate 23 are respectively provided on both sides of the cross frame 21. Both the first shaped plate 22 and the second shaped plate 23 slide vertically in a groove opened in the drill rod 13. A drive source for moving the first shaped plate 22 is provided in the groove. The first shaped plate 22 is connected to the inside of the drill bit barrel 14 through multiple L-shaped rods 24. The L-shaped rods 24 are L-shaped. A through groove is provided on the drill rod 13, allowing the horizontal part of the L-shaped rod 24 to pass through the drill rod 13 and connect to the drill bit. The second shaped plate 23 has a hole for sliding the vertical part 43 of the L-shaped rod 24. A dynamic sealing ring needs to be provided between the drill bit barrel 14 and the side wall of the drill rod 13, and the length of the drill bit barrel 14 needs to be greater than the subsequent moving length of the drill bit barrel 14 so that the moving part of the drill bit barrel 14 can be enclosed within the moving groove of the L-shaped rod 24.

[0044] Furthermore, the fastening assembly includes multiple sets of connecting rods 31 slidably connected to the drill rod 13. A single fastening plate 32 is fixedly connected to multiple connecting rods 31 located on the same straight line. The multiple sets of fastening plates 32 are arranged in a circular array with the drill rod 13 as the center. When the multiple sets of fastening plates 32 are in contact with the drill rod 13, the radius of the cylindrical cross-section formed is smaller than the radius of the cross-section of the drill bit barrel 14. A certain amount of gap needs to be reserved between the drill bit barrel 14 and the side of the fastening plate 32 that are close to each other. The auxiliary assembly includes multiple sets of connecting blocks 41 fixedly connected to the corresponding connecting rods 31, and the connecting blocks 41 have inclined grooves 42. Multiple sets of vertical rods 43 are fixedly connected to the irregular plate 22. Each of the three sections is fixedly connected with a sliding rod 44 that is compatible with the inclined groove 42. The drill rod 13 has a groove for the connecting rod 31, the connecting block 41 and the vertical rod 43 to move. The specific shape of the groove is reasonably set according to the movement path of the parts. The purpose of ensuring that the cross-sectional radius of the fastening plate 32 when it is in contact with the drill rod 13 is smaller than that of the drill bit barrel 14 is to avoid the fastening components affecting the drilling of the drill bit barrel 14. In order to ensure that the fastening plate 32 opens before the drill bit barrel 14 moves upward, the inclined groove 42 can be set with a large inclination angle first. Then, when the drill bit barrel 14 enters the opening area of ​​the fastening plate 32, the inclination angle of the inclined groove 42 can be reduced, depending on the soil conditions.

[0045] In a further embodiment of the present invention, the crushing component includes an impact cylinder 51 fixedly connected to the irregular plate 23, a conical impact rod 52 slidably connected in the impact cylinder 51, and a sealing component is also provided in the drill bit barrel 14. The sealing component includes multiple sets of sealing plates 8 elastically slidably connected in the drill bit barrel 14, and one side of each sealing plate 8 is inclined. The sealing component is provided to protect the crushing component in the drill rod 13 and prevent some mud and stones from entering the drill rod 13 during the normal drilling stroke of the drill bit barrel 14, which would affect the operation of the crushing component. The impact cylinder 51 is an existing device that provides sufficient kinetic energy for the reciprocating motion of the conical impact rod 52. The conical impact rod 52 can push open the automatic sealing component when the crushing component moves as a whole. When the crushing component resets, the sealing component resets itself.

[0046] In the embodiments provided by the present invention, the striking assembly includes a plurality of support blocks 61 fixedly connected to the drill rod 13, and a crossbeam rod 62 rotatably connected between adjacent support blocks 61. An eccentric wheel 63 is fixedly connected to each crossbeam rod 62, and a track groove 64 is formed on the eccentric wheel 63. A plurality of translation plates 65 are slidably connected to the drill rod 13, and a side rod is fixedly connected to each translation plate 65 and slidably connected to the track groove 64. The shape of the track groove 64 is consistent with the shape of the eccentric wheel 63, and both are cam-shaped. Through the cooperation of the track groove 64 and the side rod, the translation plate 65 can reciprocate as the eccentric wheel 63 rotates. Each drill bit barrel 14 is equipped with a striking rod 66 for striking. The material of the striking rod 66 is selectively set according to the usage requirements. The transmission component includes friction rollers 7 fixedly connected to the corresponding crossbeam rods 62. Each friction roller 7 is in contact with the outer surface of the conical impact rod 52. When the friction roller 7 abuts against the conical impact rod 52, the movement of the conical impact rod 52 triggers the friction roller 7 to rotate, thereby driving the striking component to work. It can strike during the stroke of the drill bit barrel 14 so that large mud clumps attached to the side wall of the drill bit barrel 14 fall off. The striking component is only set to assist the drill bit barrel 14 in better self-cleaning.

[0047] Working principle: During operation, the anchor cable holes are laid out according to the design drawings and spacing. Each anchor cable is numbered, and the hole position error is required to be no more than 2cm. The transport vehicle 1 is driven to the construction area, positioned according to the hole location, and the angle of the bracket 11 is adjusted so that the drill bit barrel 14 is in the construction position. The power cylinder 12 on the bracket 11 is started, which drives the rotary head barrel to rotate through the drill rod 13 and start drilling. During the drilling process, if large rocks that are difficult to mine are encountered, the drive source inside the drill rod 13 is activated to drive the irregular plate 22 to move. The movement of rod 22 causes the vertical rod 43 and L-shaped rod 24 to move upwards simultaneously. The upward movement of the vertical rod 43, through the sliding rod 44 set on it and the inclined groove 42 on the connecting block 41, drives the connecting block 41 to move closer to the outer side of the drill rod 13. In conjunction with the connecting rod 31, it drives the fastening plate 32 to open. At this time, the L-shaped rod 24 drives the drill bit cylinder 14 to move upwards, driving the drill bit cylinder 14 to enter the opened fastening plate 32 and separate from the drill hole. At this time, the drill rod 13 only keeps rotating and does not move. The opened fastening plate 32 squeezes and grinds the drill hole as the drill rod 13 rotates, preventing the hole from collapsing.

[0048] As the irregular plate 22 moves upward, the cross frame 21 drives the irregular plate 23 to move downward simultaneously. At this time, the impact cylinder 51 and the conical impact rod 52 set on the irregular plate 23 move downward. The downward movement of the conical impact rod 52 will open the sealing plate 8. At the same time, the impact cylinder 51 applies an impact force to the conical impact rod 52 so that the conical impact rod 52 impacts and breaks the rocks. During the stroke of the conical impact rod 52, it will always be in contact with the friction roller 7, thereby driving the friction roller 7 to drive the crossbeam rod 62 to rotate. At this time, the eccentric wheel 63 set on the crossbeam rod 62 rotates synchronously. With the help of the track groove 64 and the side rod, the translation plate 65 slides back and forth in the groove inside the drill rod 13, and drives the striking rod 66 to move synchronously. The striking rod 66 moves and collides with the suspended drill bit barrel 14 so that some of the mud and rocks attached to the drill bit barrel 14 can fall off, thereby cleaning the drill bit barrel 14.

[0049] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cable anchor drilling rig for use in pebble formations, comprising a transport vehicle (1) and a bracket (11) mounted on the transport vehicle (1), wherein a power cylinder (12) and a drill rod (13) are mounted on the bracket (11), characterized in that: The drill rod (13) is provided with a drill bit cylinder (14) and a fastening assembly outside, and the drill rod (13) is provided with a rock crushing assembly, a striking assembly and an adjustment mechanism inside; When the adjustment mechanism is working, it drives the crushing component to move down and the drill bit barrel (14) to move up synchronously. It also drives the fastening component to expand through the auxiliary component. After the crushing component moves, it works and drives the striking component to work. The moving drill bit barrel (14) is knocked to remove mud through the transmission component. The fastening component is tightened at the drill hole as the drill rod (13) rotates to prevent collapse. The adjustment mechanism includes a cross frame (21) rotatably connected in the drill rod (13). On both sides of the cross frame (21) are respectively a first shaped plate (22) and a second shaped plate (23). The first shaped plate (22) is connected to the inside of the drill barrel (14) through multiple L-shaped rods (24). The fastening assembly includes multiple sets of connecting rods (31) that are slidably connected to the drill rod (13), and the same fastening plate (32) is fixedly connected to multiple connecting rods (31) located on the same straight line. The auxiliary component includes multiple sets of connecting blocks (41) fixedly connected to the corresponding connecting rods (31), and the connecting blocks (41) are provided with inclined grooves (42). Multiple sets of vertical rods (43) are fixedly connected to the irregular plate (22), and each vertical rod (43) is fixedly connected with a sliding rod (44) that is compatible with the inclined groove (42).

2. The anchor cable drilling rig for use in pebble formations according to claim 1, characterized in that, The crushing assembly includes an impact cylinder (51) fixedly connected to the irregular plate (23), and a conical impact rod (52) is slidably connected in the impact cylinder (51).

3. The anchor cable drilling rig for use in pebble formations according to claim 2, characterized in that, The striking assembly includes multiple support blocks (61) fixedly connected in the drill rod (13), and a crossbeam rod (62) rotatably connected between adjacent support blocks (61). An eccentric wheel (63) is fixedly connected to each crossbeam rod (62), and a track groove (64) is provided on the eccentric wheel (63). The drill rod (13) is slidably connected to a plurality of translation plates (65), and each translation plate (65) is fixedly connected to a side rod that is slidably connected in the track groove (64). Each translation plate (65) is provided with a striking rod (66) for the drill bit barrel (14) to strike.

4. The anchor cable drilling rig for use in pebble formations according to claim 3, characterized in that, The transmission assembly includes friction rollers (7) fixedly connected to the corresponding crossbeam (62), and each friction roller (7) is in contact with the outer surface of the conical impact rod (52).

5. The anchor cable drilling rig for use in pebble formations according to claim 1, characterized in that, The drill bit barrel (14) is also provided with a sealing assembly, which includes multiple sets of sealing plates (8) that are elastically slidably connected in the drill bit barrel (14), and one side of each sealing plate (8) is inclined.

6. The anchor cable drilling rig for use in pebble formations according to claim 1, characterized in that, After the fastening assembly expands a certain distance, the drill bit barrel (14) moves to the fastening assembly. The expanded fastening assembly protects the drill bit barrel (14) to prevent the drill bit from being buried.

7. The anchor cable drilling rig for use in pebble formations according to claim 1, characterized in that, Multiple sets of fastening plates (32) are arranged in a ring array with the drill rod (13) as the center. When the multiple sets of fastening plates (32) are attached to the drill rod (13), the radius of the cylindrical cross section formed is smaller than the radius of the cross section of the drill bit cylinder (14).

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