Directional drilling pipe hole fishing device

Abstract

The application discloses a directional drilling rod hole fishing device and relates to the field of building construction.The device comprises a drilling machine connecting rod, a fishing structure, a clamping structure and a magnetic attraction structure.The fishing structure is used for fishing the broken drilling rod, the clamping structure is used for clamping and fixing the broken drilling rod, and the magnetic attraction structure is used for adsorbing and fixing the broken drilling rod.The application drives the horn mouth into the drilling hole, breaks the inner wall of the drilling hole by using the first and second cutting teeth, makes one end of the drilling rod slide along the inner wall of the cavity into the inner cavity of the horn mouth, pulls the drawstring, drives the movable block to slide in the inner cavity of the movable cavity, drives multiple steel cables to move together, drives the movable ring and the extrusion ring to slide in the inner cavity of the installation cavity, the inclined surface of the inner wall of the extrusion ring is pressed against the inclined surface of the connecting block, the connecting block and the fixed block are pushed to move to the middle part of the cavity, and one end of the drilling rod in the cavity is clamped and fixed, so that the drilling rod is conveniently fished.

Description

Technical Field

[0001] This invention relates to the field of building construction, and in particular to a device for retrieving directional drill rods from inside the hole. Background Technology

[0002] During bridge construction, bored piles are usually required. The drilling process typically involves rotating a drill rod and drill bit in the mud. Due to the complexity of the geology and the fatigue characteristics of the drill rod, drill rod breakage is common during drilling, and the broken drill rod falls to the bottom of the borehole.

[0003] When a drill rod breaks off and falls into the borehole, the borehole diameter shrinks due to groundwater seepage in the mudstone section. Common drill rod retrieval devices cannot easily reach the bottom of the borehole because of this shrinkage. Furthermore, when the drill rod is lifted upwards, its own weight can cause it to slide downwards, reducing the stability of the retrieval process and making it difficult to perform the retrieval operation. Summary of the Invention

[0004] The purpose of this invention is to provide a directional drill pipe in-hole retrieval device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a directional drill rod in-hole retrieval device, comprising a drill rig connecting rod;

[0006] It also includes a salvage structure, a clamping structure and a magnetic attraction structure. The salvage structure is located at one end of the drilling rig connecting rod and is used to salvage the broken drill rod.

[0007] The clamping structure is installed on the salvage structure and is used to clamp and fix the broken drill rod.

[0008] The magnetic attraction structure is installed on the retrieval structure and is used to attract and fix the broken drill rod.

[0009] Preferably, the salvage structure includes:

[0010] A taper, which is fixedly connected to one end of the drilling rig connecting rod;

[0011] A flared opening, which is fixedly connected to one end of a tap, wherein the diameter of the flared opening is larger than that of the tap.

[0012] A cavity is provided on a flared opening, and the inner wall of the cavity is flared.

[0013] Preferably, the salvage structure further includes:

[0014] The first cutting tooth is fixedly connected to the outer wall of one end of the flared mouth, and the first cutting tooth is arranged in a ring array at intervals.

[0015] The second cutting tooth is fixedly connected to the outer wall of the other end of the flared mouth, and the second cutting tooth is arranged in a ring array at intervals.

[0016] The threaded groove is provided on the outer wall of the taper.

[0017] Preferably, the clamping structure includes:

[0018] A fixing block is disposed in the inner cavity of the cavity, and the fixing blocks are arranged in a ring array at equal intervals;

[0019] A magnetic block, wherein the magnetic block is fixedly connected to the outer wall of a fixed block;

[0020] A connecting block, one end of which is fixedly connected to the middle of the outer wall of a fixed block, and the other end of which is set at an angle;

[0021] A connecting rod, one end of which is fixedly connected to the outer wall of one end of the fixed block, and the connecting rod is slidably inserted into the inner wall of the cavity;

[0022] A limiting block, which is fixedly connected to the other end of the connecting rod;

[0023] The first compression spring is movably connected to one end of the connecting rod, and the top end of the first compression spring is in contact with the lower surface of the limiting block.

[0024] Preferably, the clamping mechanism further includes:

[0025] The mounting cavity is located on the flared opening and is arranged in a circular shape.

[0026] A movable ring, wherein the movable ring is disposed in the inner cavity of the mounting cavity;

[0027] A compression ring, one end of which is fixedly connected to the outer wall of a movable ring, and the inner wall of the compression ring is inclined.

[0028] Preferably, the clamping mechanism further includes:

[0029] Steel cable, one end of which is fixedly connected to the outer wall of the extrusion ring;

[0030] The movable cavity is located inside the drilling rig connecting rod and the tap.

[0031] A movable block is inserted into one end of the inner cavity of the movable cavity, and the outer wall of the movable block is fixedly connected to the other end of the steel cable.

[0032] A pull rope, one end of which is fixedly connected to the middle of the outer wall of the movable block.

[0033] Preferably, the clamping mechanism further includes:

[0034] A first stop block is fixedly connected to the inner wall of the mounting cavity and is located on the back side of the extrusion ring.

[0035] The second stop is fixedly connected to the inner wall of the mounting cavity and is located on the front side of the movable ring.

[0036] A tension spring, one end of which is fixedly connected to the front of a movable ring, and the tension springs are arranged in a ring array at intervals.

[0037] Preferably, the magnetic attraction structure includes:

[0038] A movable plate, which is movably disposed within the inner cavity of the cavity;

[0039] A connecting column, one end of which is fixedly connected to the middle of the back of the movable plate, and the other end of which is inserted through the inner wall of the cavity;

[0040] The mounting slot is disposed on the inner wall of the cavity.

[0041] Preferably, the magnetic attraction structure further includes:

[0042] A conductive block, which is fixedly connected to the inner wall of the mounting groove;

[0043] The mounting block is fixedly inserted and connected to one end of the connecting column, and the mounting block is movably disposed in the inner cavity of the mounting groove;

[0044] The second compression spring is movably connected to one end of the connecting post.

[0045] Preferably, one end of the connecting post is hemispherical, both the connecting post and the conductive block are made of conductive metal material, and the second compression spring is disposed between the mounting block and the inner wall of the mounting groove.

[0046] The technical effects and advantages of this invention are as follows:

[0047] (1) The present invention utilizes a combination of a flared mouth, a cavity, a first cutting tooth, and a second cutting tooth. By connecting the drill rod to the drill, the flared mouth is driven into the borehole. The first cutting tooth and the second cutting tooth are used to break the inner wall of the borehole, which facilitates the movement of the flared mouth inside the borehole. When the flared mouth moves to one end of the drill rod, one end of the drill rod slides along the inner wall of the cavity into the inner cavity of the flared mouth, which facilitates the connection of the flared mouth and the drill rod.

[0048] (2) The present invention utilizes a combination of a pull rope, a movable block, a steel cable, a movable ring, a compression ring, a connecting block, and a fixed block. By pulling the pull rope, the movable block slides in the inner cavity of the movable cavity, causing multiple steel cables to move together, pulling the movable ring and the compression ring to slide in the inner cavity of the mounting cavity. The inclined surface of the inner wall of the compression ring presses against the inclined surface of the connecting block, pushing the connecting block and the fixed block to move towards the center of the cavity, clamping and fixing one end of the drill rod in the cavity, which facilitates the retrieval of the drill rod.

[0049] (3) The present invention utilizes a combination of movable plate, connecting column, conductive block and magnetic block. By pressing the movable plate against the back of the drill rod, the connecting column is pressed against the conductive block, and multiple magnetic blocks are energized to generate magnetic force, which attracts one end of the drill rod, thereby improving the stability of the drill rod gripping. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0051] Figure 2 This is a schematic diagram of the side structure of the flared opening of the present invention.

[0052] Figure 3 This is a schematic diagram of the side cross-sectional structure of the flared opening of the present invention.

[0053] Figure 4 This is a schematic cross-sectional view of the extrusion ring of the present invention.

[0054] Figure 5 This is a front cross-sectional view of the movable ring of the present invention.

[0055] Figure 6 For the present invention Figure 3 A magnified structural diagram at point A.

[0056] In the diagram: 1. Drilling rig connecting rod; 2. Salvage structure; 21. Nut tap; 22. Trumpet mouth; 23. Cavity; 24. First cutting tooth; 25. Second cutting tooth; 26. Threaded groove; 3. Clamping structure; 31. Fixing block; 32. Magnetic block; 33. Connecting block; 34. Connecting rod; 35. Limiting block; 36. First compression spring; 37. Mounting cavity; 38. Movable ring; 39. Compression ring; 310. Steel cable; 311. Movable cavity; 312. Movable block; 313. Pull rope; 314. Stop block one; 315. Stop block two; 316. Tension spring; 4. Magnetic attraction structure; 41. Movable plate; 42. Connecting column; 43. Mounting groove; 44. Conductive block; 45. Mounting block; 46. Second compression spring. Detailed Implementation

[0057] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] This invention provides, for example Figure 1-6 The illustrated directional drill rod in-hole retrieval device includes a drill rig connecting rod 1, a retrieval structure 2, a clamping structure 3, and a magnetic attraction structure 4. The drill rig connecting rod 1 connects to the drill rig, driving the retrieval device into the borehole. The retrieval structure 2 is located at one end of the drill rig connecting rod 1 and is used to retrieve broken drill rods. The retrieval structure 2 enters the borehole and moves to the location of the broken drill rod for retrieval. The clamping structure 3 is located on the retrieval structure 2 and is used to clamp and fix the broken drill rod. The clamping structure 3 clamps and fixes one end of the drill rod for easy gripping. The magnetic attraction structure 4 is located on the retrieval structure 2 and is used to attract and fix the broken drill rod. The magnetic attraction structure 4 generates magnetic force to attract the drill rod, improving the stability of the drill rod retrieval.

[0059] Furthermore, the salvage structure 2 includes a tap 21, which is fixedly connected to one end of the drilling rig connecting rod 1. The tap 21 is used to install and connect the flared opening 22 to the drilling rig. The flared opening 22 is fixedly connected to one end of the tap 21. The diameter of the flared opening 22 is larger than that of the tap 21, allowing easy access to the borehole and facilitating the gripping of the drill rod. A cavity 23 is located on the flared opening 22. The inner wall of the cavity 23 is flared and is used to accommodate one end of the drill rod. When the flared opening 22 moves to the drill rod position, one end of the drill rod slides along the inner wall of the cavity 23 into the flared opening 22. The inner cavity facilitates the connection between the bell mouth 22 and the drill rod; the first cutting tooth 24 is fixedly connected to the outer wall of one end of the bell mouth 22, and the first cutting tooth 24 is arranged in a ring array at intervals; the second cutting tooth 25 is fixedly connected to the outer wall of the other end of the bell mouth 22, and the second cutting tooth 25 is arranged in a ring array at intervals. The first cutting tooth 24 and the second cutting tooth 25 move together with the bell mouth 22, and the first cutting tooth 24 and the second cutting tooth 25 are used to break the inner wall of the drill hole, so that the bell mouth 22 can move inside the drill hole; the threaded groove 26 is provided on the outer wall of the tap 21, and the threaded groove 26 is used for the installation of the bell mouth 22.

[0060] In particular, the clamping structure 3 includes a fixing block 31, which is disposed in the inner cavity of the cavity 23. The fixing blocks 31 are arranged in a ring array at equal intervals and are arc-shaped. A groove is formed on the inner wall of the cavity 23, and the fixing blocks 31 are housed in the inner cavity of the groove. A magnetic block 32 is fixedly connected to the outer wall of the fixing block 31. The magnetic block 32 moves with the fixing block 31 and is electrically connected to the connecting post 42 for clamping and attracting one end of the drill rod. A connecting block 33 is fixedly connected at one end to the middle of the outer wall of the fixing block 31. The other end of the connecting block 33 is inclined and slides through the inner wall of the cavity 23 to drive the fixing block 31 and the magnetic block. 32 moves; connecting rod 34, one end of which is fixedly connected to the outer wall of one end of fixed block 31, and slidingly inserted into the inner wall of cavity 23, moving together with fixed block 31; limiting block 35, which is fixedly connected to the other end of connecting rod 34, and used to compress first compression spring 36; first compression spring 36, which is movably sleeved with one end of connecting rod 34, and the top end of first compression spring 36 is in contact with the lower surface of limiting block 35, using the elasticity of first compression spring 36 to support limiting block 35, when fixed block 31 moves towards the center, connecting rod 34 drives limiting block 35 to compress and deform first compression spring 36, and using the elasticity of first compression spring 36 to support limiting block 35. The elastic force of the 6 pushes the limiting block 35 and the fixing block 31 back to their initial positions, storing the fixing block 31 in the inner cavity of the groove; the mounting cavity 37 is set on the flared mouth 22, and the mounting cavity 37 is annular, used to install the movable ring 38 and the compression ring 39; the movable ring 38 is set in the inner cavity of the mounting cavity 37, and slides in the inner cavity of the mounting cavity 37 to drive the compression ring 39 to move together; one end of the compression ring 39 is fixedly connected to the outer wall of the movable ring 38, and the inner wall of the compression ring 39 is inclined, and the inclined surface of the inner wall of the compression ring 39 fits against the inclined surface of one end of the connecting block 33, and as the compression ring 39 moves horizontally, it squeezes the connecting block 33. The pressure pushes multiple fixed blocks 31 and magnetic blocks 32 toward the center of the cavity 23; a steel cable 310, one end of which is fixedly connected to the outer wall of the extrusion ring 39, pulls the extrusion ring 39 through multiple steel cables 310, causing the movable ring 38 and the extrusion ring 39 to slide in the inner cavity of the mounting cavity 37; a movable cavity 311, which is located inside the drilling rig connecting rod 1 and the tap 21, is used to install the movable block 312 and the steel cable 310; a movable block 312, which is inserted into one end of the inner cavity of the movable cavity 311, has its outer wall fixedly connected to the other end of the steel cable 310, and connects the steel cable 310 to the pull rope 313 through the movable block 312;A pull rope 313, one end of which is fixedly connected to the middle of the outer wall of the movable block 312, is made of steel cable. One end of the pull rope 313 is located outside the borehole. By pulling the pull rope 313, the movable block 312 slides within the inner cavity of the movable cavity 311, causing multiple steel cables 310 to move together. A first stop block 314 is fixedly connected to the inner wall of the mounting cavity 37 and is located on the back of the compression ring 39. The first stop block 314 is used to limit the movement of the compression ring 39. A second stop block 315 is fixedly connected to the inner wall of the mounting cavity 37 and is located on the front of the movable ring 38. The second stop block 315 is used to limit the movement of the movable ring 38. The movement is limited; a tension spring 316, one end of which is fixedly connected to the front of the movable ring 38, is arranged in a ring array at intervals, and the other end of which is fixedly connected to the inner wall of the mounting cavity 37. Utilizing the elasticity of the tension spring 316, the movable ring 38 and the compression ring 39 are pulled forward. By pulling the pull rope 313, the movable block 312 slides within the inner cavity of the movable cavity 311, causing multiple steel cables 310 to move together, pulling the movable ring 38 and the compression ring 39 to slide within the inner cavity of the mounting cavity 37. The inclined surface of the inner wall of the compression ring 39 presses against the inclined surface of the connecting block 33, pushing the connecting block 33 and the fixing block 31 towards the center of the cavity 23, clamping and fixing one end of the drill rod in the cavity 23.

[0061] Furthermore, the magnetic attraction structure 4 includes a movable plate 41, which is movably disposed within the cavity 23. When one end of the drill rod slides into the cavity 23, it presses against the movable plate 41, causing the movable plate 41 to move towards the back. A connecting post 42 is fixedly connected at one end to the center of the back of the movable plate 41, and the other end of the connecting post 42 is inserted into the inner wall of the cavity 23. The connecting post 42 moves together with the movable plate 41. A mounting groove 43 is disposed on the inner wall of the cavity 23 and is used to accommodate the connecting post 42 and the conductive block 44. The conductive block 44 is fixedly connected to the inner wall of the mounting groove 43 and is connected to an external power source via an electrical connection wire. When the connecting post... When one end of 42 is pressed into contact with the conductive block 44, the multiple magnetic blocks 32 are energized to generate magnetic force, which attracts one end of the drill rod; the mounting block 45 is fixedly inserted into one end of the connecting post 42, and the mounting block 45 is movably disposed in the inner cavity of the mounting groove 43. The mounting block 45 moves together with the connecting post 42 to compress and deform the second compression spring 46; the second compression spring 46 is movably sleeved with one end of the connecting post 42, and the elastic action of the second compression spring 46 pushes the connecting post 42 to separate from the conductive block 44; one end of the connecting post 42 is hemispherical, and both the connecting post 42 and the conductive block 44 are made of conductive metal material. The second compression spring 46 is disposed between the mounting block 45 and the inner wall of the mounting groove 43.

[0062] The working principle of this invention is as follows: By connecting the drill rod 1 to the drill rig, the bell mouth 22 is driven into the borehole. The first cutting tooth 24 and the second cutting tooth 25 are used to break the inner wall of the borehole, facilitating the movement of the bell mouth 22 inside the borehole. When the bell mouth 22 moves to one end of the drill rod, one end of the drill rod slides along the inner wall of the cavity 23 into the inner cavity of the bell mouth 22, facilitating the connection between the bell mouth 22 and the drill rod. At the same time, by pulling the pull rope 313, the movable block 312 is driven into the inner cavity of the movable cavity 311. The sliding motion causes multiple steel cables 310 to move together, pulling the movable ring 38 and the compression ring 39 to slide within the inner cavity of the mounting cavity 37. The inclined surface of the inner wall of the compression ring 39 presses against the inclined surface of the connecting block 33, pushing the connecting block 33 and the fixing block 31 towards the center of the cavity 23. This clamps and fixes one end of the drill rod in the cavity 23, and the drill rod presses against the movable plate 41 on the back, causing one end of the connecting column 42 to press against the conductive block 44. This energizes the multiple magnetic blocks 32, causing them to generate magnetic force and attract one end of the drill rod.

[0063] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A directional drill pipe borehole retrieval device, comprising: Drilling rig connecting rod (1); The feature is that it also includes a salvage structure (2), a clamping structure (3) and a magnetic suction structure (4), wherein the salvage structure (2) is disposed at one end of the drilling rig connecting rod (1) and is used to salvage the broken drill rod; The clamping structure (3) is set on the salvage structure (2) and is used to clamp and fix the broken drill rod; The magnetic attraction structure (4) is set on the retrieval structure (2) and is used to attract and fix the broken drill rod; The salvage structure (2) includes: A taper (21) is fixedly connected to one end of the drilling rig connecting rod (1); A flared mouth (22) is fixedly connected to one end of a taper (21), and the diameter of the flared mouth (22) is larger than that of the taper (21). A cavity (23) is provided on a flared opening (22), and the inner wall of the cavity (23) is flared. The clamping structure (3) includes: A fixing block (31) is disposed in the inner cavity of the cavity (23), and the fixing blocks (31) are arranged in a ring array at equal intervals; Magnetic block (32), which is fixedly connected to the outer wall of fixed block (31); A connecting block (33) is fixedly connected at one end to the middle of the outer wall of the fixing block (31), and the other end of the connecting block (33) is set with an inclined surface; A connecting rod (34) is fixedly connected at one end to the outer wall of one end of a fixed block (31), and the connecting rod (34) is slidably inserted into the inner wall of the cavity (23). A limiting block (35) is fixedly connected to the other end of a connecting rod (34); The first compression spring (36) is movably connected to one end of the connecting rod (34), and the top end of the first compression spring (36) is in contact with the lower surface of the limiting block (35); The clamping structure (3) also includes: The mounting cavity (37) is disposed on the flared mouth (22) and is arranged in a circular shape; The movable ring (38) is disposed in the inner cavity of the mounting cavity (37); The compression ring (39) has one end fixedly connected to the outer wall of the movable ring (38), and the inner wall of the compression ring (39) is set with an incline.

2. The directional drill rod in-hole retrieval device according to claim 1, characterized in that, The salvage structure (2) also includes: The first cutting tooth (24) is fixedly connected to the outer wall of one end of the flared mouth (22), and the first cutting tooth (24) is arranged in a ring array at intervals; The second cutting tooth (25) is fixedly connected to the outer wall of the other end of the flared mouth (22), and the second cutting tooth (25) is arranged in a ring array at intervals; Threaded groove (26) is provided on the outer wall of the taper (21).

3. The directional drill rod in-hole retrieval device according to claim 1, characterized in that, The clamping structure (3) also includes: A steel cable (310), one end of which is fixedly connected to the outer wall of the extrusion ring (39); The movable cavity (311) is located inside the drilling rig connecting rod (1) and the tap (21); Movable block (312), the movable block (312) is inserted into one end of the inner cavity of the movable cavity (311), and the outer wall of the movable block (312) is fixedly connected to the other end of the steel cable (310); A pull rope (313) is fixedly connected at one end to the middle of the outer wall of the movable block (312).

4. The directional drill rod in-hole retrieval device according to claim 3, characterized in that, The clamping structure (3) also includes: Stop block 1 (314) is fixedly connected to the inner wall of the mounting cavity (37) and is located on the back side of the extrusion ring (39); Stop block two (315), the stop block two (315) is fixedly connected to the inner wall of the mounting cavity (37), and the stop block two (315) is located on the front of the movable ring (38); A tension spring (316) is fixedly connected at one end to the front of a movable ring (38), and the tension springs (316) are arranged in a ring array at intervals.

5. The directional drill rod in-hole retrieval device according to claim 4, characterized in that, The magnetic attraction structure (4) includes: Movable plate (41), which is movably disposed in the inner cavity of cavity (23); A connecting column (42) is fixedly connected at one end to the middle of the back of the movable plate (41), and the connecting column (42) is inserted into the inner wall of the cavity (23). The mounting groove (43) is disposed on the inner wall of the cavity (23).

6. The directional drill rod in-hole retrieval device according to claim 5, characterized in that, The magnetic attraction structure (4) also includes: Conductive block (44), the conductive block (44) is fixedly connected to the inner wall of the mounting groove (43); Mounting block (45), which is fixedly inserted and connected to one end of connecting column (42), and the mounting block (45) is movably disposed in the inner cavity of mounting groove (43); The second compression spring (46) is movably connected to one end of the connecting post (42).

7. The directional drill rod in-hole retrieval device according to claim 6, characterized in that, One end of the connecting post (42) is hemispherical. Both the connecting post (42) and the conductive block (44) are made of conductive metal material. The second compression spring (46) is located between the inner wall of the mounting block (45) and the mounting groove (43).

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