Quick dismounting device for elbow joint of directional coring drilling tool

Abstract

The invention discloses a quick dismounting device for an elbow joint of a directional coring drilling tool, and relates to the technical field of drilling tool dismounting. The quick dismounting device for the elbow joint of the directional coring drilling tool comprises a drilling tool horizontal adjusting assembly, a drilling tool dismounting assembly and a drilling tool fixing assembly. The horizontal adjusting assembly comprises a track, a moving trolley, a first conveying roller and a second conveying roller. The moving trolley is arranged on the track and can move along the track; the first conveying roller is rotationally arranged at one end of the track, the second conveying roller is rotationally arranged on the moving trolley, and the two conveying rollers are collinear in conveying direction and identical in height; and the second conveying roller is connected with a driving mechanism. The dismounting assembly comprises a mounting seat, a telescopic piece and a holding piece; the mounting base is arranged on the moving trolley, the fixed end of the telescopic piece is hinged to the mounting base, and the holding piece is hinged to the telescopic end of the telescopic piece. The drilling tool fixing assembly is arranged on the moving trolley and located between the enclasping piece and the second conveying roller. The device can be rapidly deployed in complex terrains, the bent connector is rapidly disassembled, the labor intensity is reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of drill bit elbow disassembly technology, and more specifically, to a quick disassembly device for directional coring drill bit elbows. Background Technology

[0002] In geological exploration, mineral exploration, and scientific drilling, directional core drilling is a crucial method for obtaining core samples from deep formations. The elbow joint, a key component in directional core drilling rigs, connects the drill pipe to the bottom-hole power drill bit. Its specific bending angle allows for directional deviation of the borehole trajectory, thus meeting the directional drilling requirements under varying geological conditions. During actual construction, elbow joints with different bending angles need to be frequently disassembled and replaced to adapt to the directional drilling requirements of different formations or to replace worn components.

[0003] Currently, in small and medium-sized core drilling operations, the disassembly of elbow joints and drill string joints mainly relies on manual operation. The conventional approach involves multiple workers working together, using tools such as pipe wrenches and levers to forcibly twist the drill string joints. When threaded connections become abnormally tight due to prolonged pressure, torque, and mud erosion, it is even necessary to use a hammer to strike the drill string to loosen it through vibration. This traditional disassembly method has the following prominent problems: First, it is labor-intensive and inefficient, consuming a large amount of manpower and time, seriously affecting the construction progress; second, manual operation makes it difficult to precisely control the direction and force of application, and slight carelessness may cause the drill pipe to slip or the tool to rebound, easily causing personnel injury and posing serious safety hazards; in addition, the violent disassembly method can easily damage the drill string threads and the elbow joint body, shortening the equipment's service life and increasing construction costs.

[0004] To overcome the drawbacks of manual disassembly, some auxiliary disassembly devices have emerged in existing technologies. However, most of these devices are designed for indoor drill tool repair and assembly scenarios, and generally suffer from drawbacks such as bulky structure, large size, and complex assembly, making them difficult to transport and deploy quickly in the field, especially in complex terrain conditions such as mountains and hills. Furthermore, during disassembly operations, existing devices typically require manual handling of the drill tools to the disassembly station; the transfer and positioning of the drill tools still rely on manual assistance, failing to achieve full mechanization of the disassembly process and resulting in limited improvement in on-site operational efficiency.

[0005] To address the aforementioned shortcomings of existing drill bit disassembly technologies, this invention provides a quick disassembly device for directional coring drill bit elbow joints. This device aims to enable rapid deployment in complex terrain conditions and quick disassembly of elbow joints, effectively reducing labor intensity and improving on-site operational efficiency and safety. Summary of the Invention

[0006] The purpose of this invention is to provide a quick disassembly device for the bent joint of a directional coring drill bit, which can be quickly deployed under complex terrain conditions and can achieve quick disassembly of the bent joint, effectively reducing the labor intensity of personnel and improving on-site operation efficiency and operational safety.

[0007] The embodiments of the present invention are implemented as follows: This application provides a quick-release device for the elbow joint of a directional coring drill bit, comprising: A drill bit leveling assembly includes a track, a moving trolley, a first conveying roller, and a second conveying roller. The moving trolley is mounted on the track and can move along the track's extension direction. The first conveying roller is rotatably mounted on one end of the track, and the second conveying roller is rotatably mounted on the moving trolley. The conveying directions of the first and second conveying rollers are on the same straight line and at the same height. The second conveying roller is connected to a drive mechanism for driving the second conveying roller to rotate; The drill string disassembly assembly includes a mounting base, a telescopic component, and a clamping component. The mounting base is mounted on the mobile trolley. The fixed end of the telescopic component is hinged to the mounting base. The clamping component is hinged to the telescopic end of the telescopic component. The clamping component is used to clamp the drill string. A drill bit fixing assembly is mounted on the mobile trolley and located between the clamping member and the second conveying roller, for fixing the drill bit.

[0008] In some embodiments of the present invention, the clamping member is a chain-type pipe wrench.

[0009] In some embodiments of the present invention, the above-mentioned drill bit fixing assembly includes a fixed clamping block, a sliding clamping block, and a clamping jack. The fixed clamping block is fixedly disposed on the mobile trolley, and the sliding clamping block is slidably disposed on the mobile trolley, with the sliding direction perpendicular to the conveying direction of the first conveying roller. The telescopic end of the clamping jack is connected to the sliding clamping block and is used to drive the sliding clamping block to slide.

[0010] In some embodiments of the present invention, the driving mechanism includes a drive motor, and the rotating end of the second conveying roller is connected to the output end of the drive motor.

[0011] In some embodiments of the present invention, a height adjustment component is further included. The height adjustment component includes a first lifting mechanism and a second lifting mechanism. The first lifting mechanism is disposed between the first conveying roller and the track and is used to drive the first conveying roller to rise and fall. The second lifting mechanism is disposed between the second conveying roller and the moving trolley and is used to drive the second conveying roller to rise and fall. The first conveying roller and the second conveying roller have the same lifting direction.

[0012] In some embodiments of the present invention, the first lifting mechanism includes two lifting jacks, which are disposed on the track, and the telescopic ends of the two lifting jacks are respectively connected to the two ends of the first conveying roller.

[0013] In some embodiments of the present invention, the second lifting mechanism includes a scissor lift and a mounting plate. The scissor lift is disposed on the mobile trolley, the mounting plate is disposed on the telescopic end of the scissor lift, and the second conveying roller is disposed on the mounting plate.

[0014] In some embodiments of the present invention, the telescopic member includes a telescopic jack, one end of which is hinged to the mounting base and the other end of which is hinged to the clamping member.

[0015] In some embodiments of the present invention, the track includes a plurality of cylindrical guide rails arranged in parallel with each other, each cylindrical guide rail is provided with a plurality of rollers, and each roller has an annular groove adapted to the cylindrical guide rail in the circumferential direction. The annular grooves are all engaged on the corresponding cylindrical guide rails, and each roller is rotatably mounted on the moving trolley.

[0016] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects: 1. This invention utilizes three main functional modules: a drill bit leveling component, a drill bit disassembly component, and a drill bit fixing component. The disassembly and fixing components are integrated onto a mobile trolley. This structure allows the device to be disassembled into independent lightweight modules during transport, facilitating manual handling or transport by small vehicles in complex terrains such as mountains and hills. On-site deployment requires only laying tracks and placing the trolley to complete assembly, eliminating the need for complex installation and debugging, significantly reducing reliance on site conditions and heavy lifting equipment.

[0017] 2. By setting coaxial, equal-height first and second conveyor rollers (fixed end and moving end), and driving the second conveyor roller to rotate via a drive mechanism, the drill bit can be automatically conveyed along a straight line to the clamping part for disassembly, eliminating the need for manual handling or repeated position adjustments. When hoisting the drill bit onto the two conveyor rollers, the moving trolley can move along the track, placing one end of the drill bit on the moving trolley while the other end is in a suspended state. As the suspended end is slowly lowered, the moving trolley can slowly move in coordination, thereby quickly and flattening the drill bit onto the two conveyor rollers. The two conveyor rollers can quickly position the drill bit, improving drill bit placement efficiency and effectively reducing the labor intensity of personnel.

[0018] 3. The drive mechanism directly drives the second conveyor roller to rotate, which adjusts the horizontal position of the drill bit, enabling the drill bit to quickly reach the disassembly position and improve disassembly efficiency.

[0019] 4. After the drill string fixing assembly secures the drill string, the clamping member can grip the elbow joint on the drill string. The telescopic component extends and retracts, causing the clamping member to move tangentially along the drill string. This leverage principle allows for rapid rotation and disassembly of the elbow joint on the drill string, further improving disassembly efficiency. Attached Figure Description To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the installation structure of the scissor lift in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the mobile vehicle in an embodiment of the present invention.

[0021] Icons: 1-Railway; 101-Cylindrical guide rail; 2-Moving trolley; 3-First conveyor roller; 4-Second conveyor roller; 5-Mounting base; 6-Telescopic jack; 7-Chain pipe wrench; 8-Fixed clamping block; 9-Sliding clamping block; 10-Clamping jack; 11-Drive motor; 12-Lifting jack; 13-Scissor lifter; 14-Mounting plate; 15-Roller; 16-Annular groove; 17-Speed ​​controller; 18-Abutment part; 19-Pressure sensor. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of the embodiments of the present invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the embodiments of the present invention, "multiple" means at least two.

[0028] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0029] Example Please refer to Figures 1-4This embodiment provides a quick disassembly device for the bend joint of a directional coring drill bit, including a drill bit leveling assembly, a drill bit disassembly assembly, and a drill bit fixing assembly. The drill bit leveling assembly includes a track 1, a moving trolley 2, a first conveying roller 3, and a second conveying roller 4. The moving trolley 2 is mounted on the track 1 and can move along the extension direction of the track 1. The first conveying roller 3 is rotatably mounted at one end of the track 1, and the second conveying roller 4 is rotatably mounted on the moving trolley 2. The conveying directions of the first conveying roller 3 and the second conveying roller 4 are on the same straight line and at the same height. The second conveying roller 4 is connected to a drive mechanism for driving its rotation. The drill bit disassembly assembly includes a mounting base 5, a telescopic member, and a clamping member. The mounting base 5 is mounted on the moving trolley 2. The fixed end of the telescopic member is hinged to the mounting base 5, and the clamping member is hinged to the telescopic end of the telescopic member. The clamping member is used to clamp the drill bit. The drill bit fixing assembly is mounted on the aforementioned moving trolley 2 and is located between the aforementioned clamping member and the aforementioned second conveying roller 4, for fixing the drill bit.

[0030] In actual operation, when disassembling the bend joint of a directional coring drill bit, one end of the drill bit is first placed on the moving trolley 2, while the other end is lifted. As the lifted end is gradually lowered, the moving trolley 2 moves along the track 1, causing the drill bit end on it to move towards the clamping member. Finally, the lifted end of the drill bit will fall onto the first conveying roller 3. Thus, the drill bit is placed completely horizontally on the first conveying roller 3 and the second conveying roller 4. Subsequently, the second conveying roller 4 can be rotated by the drive mechanism, causing the drill bit to move on the conveying roller until the position of the bend joint to be disassembled corresponds to the clamping member. Next, the drill bit fixing assembly is activated to securely fix the drill bit and prevent displacement during disassembly. Then, the clamping member clamps the bend joint, and the telescopic member is extended. By contracting or rotating the telescopic member, appropriate tension or torque is applied to loosen the connection between the bend joint and the drill bit body, thereby achieving rapid disassembly. After disassembly, the clamping parts and drill bit fixing components are released, and the second conveying roller 4 is driven in reverse by the drive mechanism to transport the disassembled drill bit to the designated position. The whole operation process is efficient and convenient, effectively improving the disassembly efficiency and safety of the directional coring drill bit elbow joint.

[0031] This embodiment utilizes three main functional modules: a drill bit leveling component, a drill bit disassembly component, and a drill bit fixing component. The disassembly and fixing components are integrated onto a mobile trolley 2. This structure allows the device to be disassembled into independent lightweight modules during transportation, facilitating manual handling or transport by small vehicles in complex terrains such as mountains and hills. During on-site deployment, assembly can be completed simply by laying track 1 and placing the trolley, eliminating the need for complex installation and debugging, and significantly reducing reliance on site conditions and heavy lifting equipment.

[0032] In this embodiment, a first conveying roller 3 (fixed end) and a second conveying roller 4 (moving end) of the same coaxial height are set up. The second conveying roller 4 is driven to rotate by a drive mechanism. The drill bit can be automatically conveyed to the clamping part along a straight line for disassembly, without the need for manual handling or repeated position adjustment. When hoisting the drill bit onto the two conveying rollers, the moving trolley 2 can move along the track 1. One end of the drill bit can be placed on the moving trolley 2, while the other end is in a hoisted state. The hoisted end is slowly lowered, and the moving trolley 2 can move slowly in coordination, thereby quickly and flattening the drill bit on the two conveying rollers. The two conveying rollers can quickly position the drill bit, improving the drill bit placement efficiency and effectively reducing the labor intensity of personnel.

[0033] In this embodiment, the aforementioned drive mechanism directly drives the second conveying roller 4 to rotate, thereby adjusting the horizontal position of the drill bit and enabling the drill bit to quickly reach the disassembly position, thus improving disassembly efficiency.

[0034] In addition, after the aforementioned drill bit fixing assembly fixes the drill bit, the clamping member can clamp the elbow joint on the drill bit. The telescopic member extends and retracts, driving the clamping member to move along the tangential direction of the drill bit. This leverages the lever principle to quickly rotate and disassemble the elbow joint on the drill bit, further improving disassembly efficiency.

[0035] Preferably, in this embodiment, the clamping component is a chain-type pipe wrench 7. The chain-type pipe wrench 7 is an existing structure; its chain portion can be flexibly adjusted in tightness according to the outer diameter of the elbow, adapting to elbows of different specifications and enhancing the versatility of the device. Its clamp head is made of high-strength alloy material, possessing good wear resistance and clamping force, preventing slippage when rotating the elbow and ensuring a stable and reliable disassembly process. Simultaneously, the chain structure provides a larger contact area between the clamping component and the elbow, dispersing the clamping force and preventing damage to the elbow surface, thus protecting the integrity of the drill bit components.

[0036] Furthermore, in this embodiment, the drill bit fixing assembly includes a fixed clamping block 8, a sliding clamping block 9, and a clamping jack 10. The fixed clamping block 8 is fixedly mounted on the moving trolley 2, and the sliding clamping block 9 is slidably mounted on the moving trolley 2, with its sliding direction perpendicular to the conveying direction of the first conveying roller 3. The telescopic end of the clamping jack 10 is connected to the sliding clamping block 9 and is used to drive the sliding clamping block 9 to slide.

[0037] When it is necessary to secure the drill bit, the clamping jack 10 extends, pushing the sliding clamping block 9 towards the fixed clamping block 8. The two work together to form a clamping space, firmly holding the drill bit in the middle. Preferably, in this embodiment, the clamping surfaces of both the fixed clamping block 8 and the sliding clamping block 9 are provided with anti-slip textures, which can effectively increase the friction between them and the drill bit, preventing the drill bit from sliding during disassembly. Simultaneously, the extension stroke of the clamping jack 10 can be adjusted according to the diameter of the drill bit to adapt to the fixing needs of drill bits of different sizes, further improving the applicability of the drill bit fixing assembly. During clamping, the clamping force can be precisely controlled by the clamping jack 10, avoiding damage to the drill bit due to excessive clamping force, or insufficient clamping force resulting in insecure fixing of the drill bit and affecting the disassembly operation.

[0038] Optionally, in this embodiment, the driving mechanism includes a drive motor 11, and the rotating end of the second conveying roller 4 is connected to the output end of the drive motor 11. After the drive motor 11 starts, it can drive the rotating end of the second conveying roller 4 to rotate synchronously, thereby achieving the conveying function of the drill bit through the cooperation between the second conveying roller 4 and the first conveying roller 3. During the conveying process, the rotational speed of the drive motor 11 can be adjusted according to actual needs to control the conveying speed of the drill bit, ensuring that the drill bit can be moved smoothly and accurately to the designated position during disassembly.

[0039] It is worth noting that, in order to further constrain the drill bit, both the first conveying roller 3 and the second conveying roller 4 in this embodiment have annular groove structures, which allow the drill bit to be inserted into the annular grooves and effectively position the drill bit.

[0040] This embodiment also includes a height adjustment component, which comprises a first lifting mechanism and a second lifting mechanism. The first lifting mechanism is disposed between the first conveying roller 3 and the track 1, and is used to drive the first conveying roller 3 to rise and fall. The second lifting mechanism is disposed between the second conveying roller 4 and the moving trolley 2, and is used to drive the second conveying roller 4 to rise and fall. The first conveying roller 3 and the second conveying roller 4 rise and fall in the same direction. Through the coordinated action of the first and second lifting mechanisms, the height adjustment component can flexibly adjust the height of the first conveying roller 3 and the second conveying roller 4 to accommodate drill bits of different diameters, ensuring that the axis of the drill bit is always within the appropriate clamping range of the clamping member. Furthermore, the first and second lifting mechanisms can be adjusted to the same horizontal height, keeping the drill bit in a horizontal state.

[0041] In some embodiments of this example, the first lifting mechanism includes two lifting jacks 12. The two lifting jacks 12 are mounted on the track 1, and their telescopic ends are respectively connected to both ends of the first conveying roller 3. The two lifting jacks 12 are synchronously controlled to ensure that both ends of the first conveying roller 3 maintain stable movement during lifting, preventing the drill bit from tilting due to height differences at both ends. Simultaneously, the cylinders of the lifting jacks 12 are fixedly connected to the track 1 by bolts. This connection method not only facilitates installation and disassembly but also ensures structural stability during lifting, preventing factors such as vibration from affecting lifting accuracy.

[0042] Preferably, in this embodiment, the second lifting mechanism includes a scissor lift and a mounting plate 14. The scissor lift is mounted on the mobile trolley 2, the mounting plate 14 is mounted on the telescopic end of the scissor lift, and the second conveying roller 4 is mounted on the mounting plate 14. The scissor lift is an existing structure, employing a multi-link crossbar structure. A drive motor 11 drives a lead screw to rotate, achieving smooth lifting of the mounting plate 14. Its lifting stroke can be flexibly adjusted according to the drill bit diameter requirements. The mounting plate 14 is welded to the telescopic end of the scissor lift to ensure connection strength. Simultaneously, the mounting plate 14 is equipped with bearing seats that match both ends of the second conveying roller 4. The second conveying roller 4 is rotatably mounted via the bearing seats, ensuring smooth drill bit conveying. Furthermore, the bottom of the scissor lift is doubly fixed to the mobile trolley 2 using positioning pins and bolts, facilitating quick positioning and installation while effectively preventing displacement of the scissor lift during operation, further enhancing the overall stability of the second lifting mechanism.

[0043] Preferably, in this embodiment, the telescopic component includes a telescopic jack 6, one end of which is hinged to the mounting base 5, and the other end is hinged to the clamping component. The hinge between the telescopic jack 6 and the mounting base 5 allows the telescopic direction of the jack 6 to remain tangential to the drill bit, facilitating the application of torque by the clamping component to the flexible joint, thereby driving the joint to rotate and disassemble.

[0044] Preferably, in this embodiment, the track 1 includes a plurality of cylindrical guide rails 101 arranged parallel to each other. Each cylindrical guide rail 101 is provided with a plurality of rollers 15, and each roller 15 has an annular groove 16 adapted to the cylindrical guide rail 101 in the circumferential direction. The annular grooves 16 are all engaged with the corresponding cylindrical guide rail 101, and each roller 15 is rotatably mounted on the moving trolley 2.

[0045] The parallel arrangement of multiple cylindrical guide rails 101 provides stable guidance for the mobile trolley 2, ensuring that it does not deviate laterally during movement. The annular groove 16 on the roller 15 is designed to fit snugly against the cylindrical guide rail 101, effectively preventing derailment. It also facilitates the separation and assembly of the mobile trolley 2 and the track 1, further enhancing the rapid deployment capability of the mobile trolley 2 and the track 1.

[0046] It should be noted that in other embodiments, the aforementioned mobile trolley 2 is also equipped with an abutment member 18 for abutting the end of the drill bit. A pressure sensor 19 is mounted on the abutment member 18, and the pressure sensor is connected to a control unit (not shown in the figure). The mobile trolley 2 is equipped with a constant speed controller 17, which is existing technology and is used to move the roller 15 at a constant speed. The constant speed controller 17 is connected to the control unit, and the pressure sensor 19 detects pressure changes in real time. As the drill bit moves, the pressure of the pressure sensor changes accordingly, and the pressure information is transmitted to the control unit. The control unit analyzes and processes the pressure information according to a preset program and obtains the moving speed control data of the mobile trolley 2. Based on the moving speed control data, the control unit controls the constant speed controller 17 to control the mobile trolley 2 to move at a constant speed.

[0047] When the contacting part 18 contacts the drill bit end and generates pressure, the pressure sensor 19 continuously sends a real-time pressure signal to the control unit. The control unit has a pre-set algorithm model corresponding to pressure and movement speed. This model is derived through the analysis and fitting of a large amount of actual working condition data and can accurately calculate the matching movement speed parameters based on different pressure values. For example, when the pressure value is in the preset low-pressure range, the control unit determines that the drill bit is in the initial contact stage. At this time, it controls the constant speed controller 17 to drive the moving trolley 2 at a lower initial speed. As the drill bit is gradually gripped and begins to move, the pressure value gradually rises to a stable range, and the control unit adjusts the constant speed controller accordingly, switching the moving trolley 2 to the preset standard working speed. If the pressure value fluctuates abnormally during movement, such as suddenly increasing or decreasing, the control unit immediately triggers a protection mechanism, reducing the movement speed of 17 or pausing movement through the constant speed controller until the pressure returns to normal before resuming operation. This effectively avoids drill bit damage or interruption during disassembly due to abnormal pressure. This closed-loop speed control method based on pressure feedback not only enables the automated and uniform movement of the mobile trolley 2, but also allows for dynamic adjustment of operating parameters according to actual working conditions, significantly improving the stability and safety of the elbow disassembly process.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A quick-release device for the elbow joint of a directional coring drill bit, characterized in that, include: A drill bit leveling assembly includes a track, a moving trolley, a first conveying roller, and a second conveying roller. The moving trolley is mounted on the track and can move along the track's extension direction. The first conveying roller is rotatably mounted on one end of the track, and the second conveying roller is rotatably mounted on the moving trolley. The conveying directions of the first and second conveying rollers are on the same straight line and at the same height. The second conveying roller is connected to a drive mechanism for driving the second conveying roller to rotate; The drill string disassembly assembly includes a mounting base, a telescopic component, and a clamping component. The mounting base is mounted on the mobile trolley. The fixed end of the telescopic component is hinged to the mounting base. The clamping component is hinged to the telescopic end of the telescopic component. The clamping component is used to clamp the drill string. A drill bit fixing assembly is mounted on the mobile trolley and located between the clamping member and the second conveying roller, for fixing the drill bit.

2. The quick-release device for the bent joint of the directional coring drill bit according to claim 1, characterized in that, The clamping device is a chain-type pipe wrench.

3. The quick-release device for the bent joint of the directional coring drill bit according to claim 1, characterized in that, The drill bit fixing assembly includes a fixed clamping block, a sliding clamping block, and a clamping jack. The fixed clamping block is fixedly mounted on the mobile trolley, and the sliding clamping block is slidably mounted on the mobile trolley with its sliding direction perpendicular to the conveying direction of the first conveying roller. The telescopic end of the clamping jack is connected to the sliding clamping block and is used to drive the sliding clamping block to slide.

4. The quick-release device for the bent joint of the directional coring drill bit according to claim 1, characterized in that, The driving mechanism includes a drive motor, and the rotating end of the second conveying roller is connected to the output end of the drive motor.

5. The quick-release device for the bent joint of the directional coring drill bit according to claim 1, characterized in that, It also includes a height adjustment component, which includes a first lifting mechanism and a second lifting mechanism. The first lifting mechanism is disposed between the first conveying roller and the track and is used to drive the first conveying roller to rise and fall. The second lifting mechanism is disposed between the second conveying roller and the moving trolley and is used to drive the second conveying roller to rise and fall. The first conveying roller and the second conveying roller have the same lifting direction.

6. The quick-release device for the bent joint of the directional coring drill bit according to claim 5, characterized in that, The first lifting mechanism includes two lifting jacks, which are mounted on the track, and the telescopic ends of the two lifting jacks are respectively connected to the two ends of the first conveying roller.

7. The quick-release device for the bent joint of the directional coring drill bit according to claim 5, characterized in that, The second lifting mechanism includes a scissor lift and a mounting plate. The scissor lift is mounted on the mobile trolley, and the mounting plate is mounted on the telescopic end of the scissor lift. The second conveying roller is mounted on the mounting plate.

8. The quick-release device for the bent joint of the directional coring drill bit according to claim 1, characterized in that, The telescopic component includes a telescopic jack, one end of which is hinged to the mounting base and the other end of which is hinged to the clamping component.

9. The quick-release device for the bent joint of the directional coring drill bit according to any one of claims 1-8, characterized in that, The track includes multiple cylindrical guide rails arranged in parallel to each other. Each cylindrical guide rail is provided with multiple rollers. Each roller has an annular groove in the circumferential direction that is adapted to the cylindrical guide rail. The annular grooves are all engaged on the corresponding cylindrical guide rails. Each roller is rotatably mounted on the moving trolley.

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