Anti-deviation device for small-dip-angle long drill hole

Abstract

The utility model relates to the technical field of drilling equipment, in particular to a small-dip-angle long drilling anti-deviation device which comprises a fixing frame, a swinging frame capable of swinging is arranged on the fixing frame, a sliding barrel capable of sliding is arranged on the swinging frame, a drilling rod is movably connected into the sliding barrel, a guide assembly is arranged at one end of the sliding barrel, and the swinging frame is provided with a moving assembly and a fixing frame angle adjusting assembly. The guide assembly is composed of a plurality of split type guide sleeve sections which are connected through connecting assemblies, and the inner wall of the guide assembly is provided with a spiral guide groove and a guide block. The moving assembly and the angle adjusting assembly achieve position adjustment of the guide assembly and angle adjustment of the swing frame through meshing of a gear, a rack and a gear, and stability is ensured through a ratchet wheel assembly and a locking mechanism. The device effectively improves the precision of small-dip-angle long drilling and is convenient to operate.

Description

Technical Field

[0001] This application relates to the field of drilling equipment technology, and in particular to a device for preventing deviation in long boreholes with small inclination angles. Background Technology

[0002] In many fields such as mining, geological exploration, and construction, long boreholes with small inclination angles are often required. However, during actual drilling, the drill rod is prone to deviation due to various factors such as complex and variable geological conditions, the weight of the drill rod itself, and vibrations during drilling. Once the drill rod deviates, it not only causes the borehole trajectory to deviate from the predetermined design, reducing drilling accuracy and affecting the smooth progress of subsequent projects—for example, in mining, it may be impossible to accurately reach the predetermined ore layer, resulting in resource waste; in construction, it may affect the stability and safety of buildings.

[0003] Furthermore, drill pipe misalignment can lead to problems such as drill pipe breakage and accelerated drill bit wear, increasing equipment maintenance costs, extending construction cycles, and in severe cases, even causing the entire drilling operation to fail, resulting in huge economic losses for enterprises. Currently, existing drill pipe anti-misalignment devices on the market are either complex in structure and cumbersome in operation, making them difficult to install and debug quickly and effectively in actual construction; or their anti-misalignment effect is unsatisfactory and cannot meet the increasingly demanding drilling accuracy requirements.

[0004] To address this problem, a device for preventing deviation in long boreholes with small inclination angles has been invented. Utility Model Content

[0005] The purpose of this invention is to provide a device for preventing deviation in long boreholes with small inclination angles, so as to solve the problem that the drill rod is prone to deviation in existing drilling operations, resulting in low drilling accuracy and high equipment wear.

[0006] The small-angle long-hole anti-deviation device provided in this application adopts the following technical solution: it includes a fixed frame, wherein the fixed frame is provided with a swingable swing frame, the swing frame is also provided with a slidable sliding cylinder, a drill rod is movably connected inside the sliding cylinder, one end of the sliding cylinder is also provided with a guide component that can guide the drill rod, the swing frame is provided with a moving component that can drive the guide component to move, and the fixed frame is provided with an angle adjustment component that can adjust the angle of the swing frame.

[0007] Optionally, the guide assembly includes multiple split guide sleeve segments, each guide sleeve segment having a spiral guide groove on its inner wall, and multiple slidable guide blocks disposed within the guide groove. The drill pipe passes through the guide sleeve segment and contacts and connects with the guide blocks, and a connecting assembly is provided between two adjacent guide sleeve segments.

[0008] Optionally, the connecting assembly includes a connecting flange with a plurality of fastening bolts, and the guide grooves between two connected guide sleeve segments are interconnected.

[0009] Optionally, the moving component includes a second rotating shaft, the swing frame is provided with a rotatable second rotating shaft, the second rotating shaft is provided with a second driving gear, the swing frame is provided with a rotatable second driven shaft, the second driven shaft is provided with a second intermediate gear that can mesh with the second driving gear, the second driven shaft is provided with a second driven gear, and the sliding cylinder is fixed with a rack that can mesh with the second driven gear.

[0010] Optionally, the swing frame is provided with a ratchet assembly that can limit the second rotating shaft. The ratchet assembly includes two ratchets fixed on the second rotating shaft. The swing frame is hinged with pawls that correspond one-to-one with the ratchets and can be inserted into the ratchet teeth on the ratchets. The swing frame is provided with a spring plate that contacts the pawls.

[0011] Optionally, the angle adjustment assembly includes a first drive shaft, a rotatable first drive shaft is provided on the fixed frame, a first drive gear is fixed on the first drive shaft, a rotatable first driven shaft is provided on the fixed frame, a first driven gear that can mesh with the first drive gear is provided on the first driven shaft, a first rotating handle is provided at one end of the first driven shaft, the other end of the first driven shaft is connected to the swing frame, and a locking mechanism that can lock the first drive gear is provided on the fixed frame.

[0012] Optionally, the locking mechanism includes a locking block slidably connected to a fixed frame. The locking block can be inserted between two adjacent teeth on the first drive gear. A locking rod that can contact the locking block is rotatably connected to the fixed frame. When the locking rod rotates, the locking rod engages with the locking block and limits the locking block.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. Improved drilling accuracy: The unique spiral guide groove and guide block design of the guide assembly can guide the drill rod in all directions and at multiple angles, effectively preventing the drill rod from deviating during the drilling process, significantly improving drilling accuracy, and ensuring that the drilling trajectory conforms to the predetermined design.

[0015] 2. Convenient adjustment: The setting of the moving component and the angle adjustment component allows the position of the guide component and the angle of the swing frame to be flexibly adjusted according to the actual drilling requirements. The operation is simple and convenient, which greatly improves the applicability of the device.

[0016] 3. High stability: The ratchet assembly and locking mechanism limit the second rotating shaft and the first drive gear respectively, preventing the position of the guide assembly and swing frame from changing due to vibration and other factors during drilling, thus ensuring the stability of the device during operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the device. Figure I ;

[0018] Figure 2 This is a schematic diagram of the overall structure of the device. Figure II ;

[0019] Figure 3 This is the front view of the device;

[0020] Figure 4 This is a cross-sectional schematic diagram of the moving component of this device;

[0021] Figure 5 This is a cross-sectional schematic diagram of the overall structure of this device;

[0022] Figure 6 This is a schematic diagram of the guiding components of this device;

[0023] Figure 7 This is a cross-sectional schematic diagram of the guide assembly of this device;

[0024] Figure 8 For this device Figure 1 Enlarged view of A in the middle;

[0025] The components are as follows: 1. Fixed frame; 2. Swing frame; 3. Sliding cylinder; 4. Drill rod; 5. Guide assembly; 6. Moving assembly; 7. Angle adjustment assembly; 8. Guide sleeve segment; 9. Guide groove; 10. Guide block; 11. Connecting assembly; 12. Fastening bolt; 13. Second rotating shaft; 14. Connecting flange; 15. Second driving gear; 16. Second driven shaft; 17. Second intermediate gear; 18. Second driven gear; 19. Rack; 20. Ratchet assembly; 21. Ratchet; 22. Pad; 23. Spring plate; 24. First driving shaft; 25. First driving gear; 26. First driven shaft; 27. First driven gear; 28. First rotating handle; 29. ​​Locking mechanism; 30. Locking block; 31. Locking rod. Detailed Implementation

[0026] The present application will be further described in detail below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present utility model 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. Therefore, they should not be construed as limitations on the present utility model.

[0027] Reference Figure 1 , Figure 3 , Figure 4 One embodiment shown is as follows: The anti-deviation device for long boreholes with small inclination angles includes a fixed frame 1, which provides a stable support foundation for the entire device. A swing frame 2 is rotatably connected to the fixed frame 1, allowing the swing frame 2 to swing relative to the fixed frame 1. A slidable sliding cylinder 3 is slidably connected to the swing frame 2 via a sliding rail and a slider. The sliding cylinder 3 has a through hole that matches the outer diameter of the drill rod 4, allowing the drill rod 4 to move within the sliding cylinder 3 and move axially along the sliding cylinder 3. A guide assembly 5 is installed at one end of the sliding cylinder 3, guiding the drill rod 4 as it passes through. A moving assembly 6 is installed on the swing frame 2, driving the guide assembly 5 to move together with the sliding cylinder 3. An angle adjustment assembly 7 is provided on the fixed frame 1, allowing the angle of the swing frame 2 to be adjusted.

[0028] The implementation principle of the above embodiment is as follows: After the entire device is installed, the drill rod 4 passes through the sliding cylinder 3 and the guide assembly 5 to perform drilling operations. The swing frame 2 can change its angle under the action of the angle adjustment assembly 7 to adapt to different small-angle drilling requirements; the guide assembly 5 can be adjusted on the swing frame 2 under the drive of the moving assembly 6 to better guide the drill rod 4.

[0029] Reference Figure 1 , Figure 6 , Figure 7 One embodiment shown is as follows: the guide assembly 5 comprises multiple split guide sleeve segments 8, which are arranged sequentially. Each guide sleeve segment 8 has a spiral guide groove 9 machined on its inner wall, and multiple guide blocks 10 that can slide along the guide groove 9 are installed within the guide groove 9. The drill rod 4 passes through each guide sleeve segment 8, and the outer wall of the drill rod 4 contacts and connects with the guide block 10, thereby guiding the drill rod 4. A connecting assembly 11 is provided between two adjacent guide sleeve segments 8.

[0030] The implementation principle of the above embodiment is as follows: During the drilling process, when the drill rod 4 passes through the guide sleeve segment 8, the guide block 10 slides in the spiral guide groove 9. At the same time, the guide block 10 contacts the drill rod 4, restricting the radial movement of the drill rod 4 and providing a spiral guide path for the drill rod 4, effectively preventing the drill rod 4 from deviating.

[0031] Reference Figure 7 One embodiment shown is as follows: the connecting assembly 11 includes a connecting flange 14 and guide sleeve segments 8. The connecting flange 14 fixes the connecting assembly 11 to the sliding cylinder 3. Each end of the guide sleeve segment 8 is fixedly connected to a connecting flange 14. Multiple fastening bolts 12 are provided on the connecting flange 14. By passing the fastening bolts 12 through the corresponding bolt holes on the connecting flange 14 of two connected guide sleeve segments 8 and tightening the nuts, the two guide sleeve segments 8 are connected. The guide grooves 9 between the two connected guide sleeve segments 8 are interconnected to ensure the continuity of guidance.

[0032] The implementation principle of the above embodiment is as follows: the cooperation between the connecting flange 14 and the fastening bolt 12 makes the installation and disassembly of the guide sleeve segment 8 more convenient, and facilitates the replacement of damaged guide sleeve segments 8. The mutual connection of the guide grooves 9 ensures that the guiding effect of the drill pipe 4 is not interrupted when passing through different guide sleeve segments 8, and continuously and stably guides the drill pipe 4.

[0033] Reference Figure 4 One embodiment shown is as follows: The moving component 6 includes a second rotating shaft 13, which is rotatably connected to the swing frame 2 via a bearing housing. A second driving gear 15 is fixedly mounted on the second rotating shaft 13. A second driven shaft 16 is also rotatably connected to the swing frame 2 via another set of bearing housings. A second intermediate gear 17, which can mesh with the second driving gear 15, is fixedly mounted on the second driven shaft 16. A second driven gear 18 is also fixedly mounted on the second driven shaft 16. A rack 19 is fixed to the sliding cylinder 3 by welding or other fixing methods, and this rack 19 can mesh with the second driven gear 18.

[0034] The implementation principle of the above embodiment is as follows: When the second rotating shaft 13 is rotated, the second driving gear 15 rotates accordingly. Through meshing with the second intermediate gear 17, it drives the second driven shaft 16 to rotate, thereby causing the second driven gear 18 to rotate. The meshing of the second driven gear 18 with the rack 19 converts the rotation of the second driven gear 18 into the linear movement of the sliding cylinder 3, thereby realizing the adjustment of the position of the guide component 5.

[0035] Reference Figure 1 , Figure 3 , Figure 8One embodiment shown is as follows: A ratchet assembly 20 is provided on the swing frame 2 to limit the second rotating shaft 13. The ratchet assembly 20 includes two ratchet wheels 21 fixed to the second rotating shaft 13. On the swing frame 2, pawls 22 corresponding to the ratchet wheels 21 are hinged by pins, and the pawls 22 can be inserted between the ratchet teeth on the ratchet wheels 21. A spring plate 23 is also installed on the swing frame 2, and the spring plate 23 contacts the pawls 22 to provide the force for the pawls 22 to insert between the ratchet teeth.

[0036] The implementation principle of the above embodiment is as follows: after the second rotating shaft 13 rotates to adjust the position of the guide component 5, the pawl 22 is inserted between the ratchet teeth of the ratchet 21 under the action of the spring plate 23, preventing the second rotating shaft 13 from rotating in the opposite direction, preventing the position of the guide component 5 from changing due to vibration or other reasons, and ensuring the stability of the position of the guide component 5.

[0037] Reference Figure 1 One embodiment shown is as follows: The angle adjustment assembly 7 includes a first drive shaft 24, which is rotatably connected to the fixed frame 1 via bearings. A first drive gear 25 is fixedly mounted on the first drive shaft 24. A rotatable first driven shaft 26 is also mounted on the fixed frame 1 via another set of bearings. A first driven gear 27, capable of meshing with the first drive gear 25, is mounted on the first driven shaft 26. A first rotating handle 28 is mounted at one end of the first driven shaft 26 for easy rotation by the operator; the other end of the first driven shaft 26 is fixedly connected to the swing frame 2. A locking mechanism 29 is provided on the fixed frame 1 for locking the first drive gear 25.

[0038] The implementation principle of the above embodiment is as follows: the operator rotates the first rotating handle 28, which drives the first driven shaft 26 to rotate, and the first driven gear 27 rotates accordingly. Through meshing with the first driving gear 25, the first driving shaft 24 is driven to rotate, thereby realizing the angle adjustment of the swing frame 2. When the appropriate angle is adjusted, the first driving gear 25 is locked by the locking mechanism 29 to fix the angle of the swing frame 2.

[0039] Reference Figure 1 , Figure 2 One embodiment shown is as follows: The locking mechanism 29 includes a locking block 30, which is slidably connected to the fixed frame 1 and can be inserted between two adjacent teeth of the first drive gear 25. A locking rod 31 is rotatably connected to the fixed frame 1 via a pin, and the locking rod 31 can contact the locking block 30. When the locking rod 31 rotates, it engages with the locking block 30, limiting the locking block 30's position.

[0040] The implementation principle of the above embodiment is as follows: after the swing frame 2 is adjusted to a suitable angle, the locking block 30 is inserted between the teeth of the first drive gear 25, and then the locking rod 31 is rotated to engage with the locking block 30, thereby restricting the movement of the locking block 30, preventing the first drive gear 25 from rotating, fixing the angle of the swing frame 2, and ensuring the stability of the device during the drilling process.

[0041] The working principle of this device is as follows: The device is installed and fixed, with the drill rod 4 passing through the sliding cylinder 3 and the guide assembly 5. The operator can rotate the first rotating handle 28 according to the small inclination angle requirement of the drilling design. The first rotating handle 28 drives the first driven shaft 26 to rotate, and the first driven gear 27 on the first driven shaft 26 rotates accordingly. The first driving gear 25, meshing with the first driven gear 27, drives the first driving shaft 24 to rotate, thereby achieving angle adjustment of the swing frame 2 relative to the fixed frame 1. After adjustment, the first driving gear 25 is locked by the locking mechanism 29. The locking block 30 of the locking mechanism 29 is inserted between adjacent teeth of the first driving gear 25, and the rotating lever 31 engages with the locking block 30, preventing the first driving gear 25 from rotating and ensuring the angle of the swing frame 2 is fixed.

[0042] During drilling, the guide assembly 5 plays a crucial role. The drill rod 4 passes through multiple split guide sleeve segments 8, and the guide blocks 10 within the spiral guide grooves 9 on the inner wall of the guide sleeve segments 8 contact the drill rod 4. The guide blocks 10 slide within the spiral guide grooves 9, providing a spiral guide path for the drill rod 4, restricting the radial movement of the drill rod 4, and preventing the drill rod 4 from deviating. Adjacent guide sleeve segments 8 are connected by connecting flanges 14 and fastening bolts 12, and the guide grooves 9 are interconnected to ensure the continuity of guidance.

[0043] When the position of the guide assembly 5 needs to be adjusted, the second rotating shaft 13 is rotated. The second driving gear 15 on the second rotating shaft 13 rotates accordingly, driving the second intermediate gear 17 meshing with it to rotate. The second intermediate gear 17 drives the second driven shaft 16 to rotate, causing the second driven gear 18 on the second driven shaft 16 to rotate. Since the rack 19 is fixed on the sliding cylinder 3, the second driven gear 18 meshes with the rack 19, thereby driving the sliding cylinder 3 to slide along the swing frame 2, realizing the adjustment of the position of the guide assembly 5 to adapt to different needs during the drilling process. After the adjustment is completed, the ratchet assembly 20 plays a role. The pawl 22 is inserted between the ratchet teeth of the ratchet 21 under the action of the spring plate 23, preventing the second rotating shaft 13 from rotating due to vibration or other unexpected situations, and ensuring the stability of the position of the guide assembly 5.

[0044] The working principle of this device has been explained through the above embodiments. These embodiments only illustrate several implementation methods of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A small-inclination long-hole deviation-prevention device comprising a fixing frame (1), characterized in that: The fixed frame (1) is provided with a swingable swing frame (2), and the swing frame (2) is also provided with a sliding cylinder (3). A drill rod (4) is movably connected inside the sliding cylinder (3). One end of the sliding cylinder (3) is also provided with a guide component (5) that can guide the drill rod (4). The swing frame (2) is provided with a moving component (6) that can drive the guide component (5) to move. The fixed frame (1) is provided with an angle adjustment component (7) that can adjust the angle of the swing frame (2).

2. The low angle long hole anti- drift device according to claim 1, characterized in that: The guide assembly (5) includes multiple split guide sleeve segments (8), and each guide sleeve segment (8) has a spiral guide groove (9) on its inner wall. Multiple slidable guide blocks (10) are provided in the guide groove (9). The drill rod (4) passes through the guide sleeve segment (8) and is in contact with the guide block (10). A connecting assembly (11) is provided between two adjacent guide sleeve segments (8).

3. The low angle long hole anti- deviation device according to claim 2, characterized in that: The connecting assembly (11) includes a connecting flange (14) on which a plurality of fastening bolts (12) are provided, and the guide grooves (9) between the two connected guide sleeve segments (8) are connected to each other.

4. The low angle long hole anti- drift device according to claim 1, characterized in that: The moving component (6) includes a second rotating shaft (13), the swing frame (2) is provided with a rotatable second rotating shaft (13), the second rotating shaft (13) is provided with a second driving gear (15), the swing frame (2) is provided with a rotatable second driven shaft (16), the second driven shaft (16) is provided with a second intermediate gear (17) that can mesh with the second driving gear (15), the second driven shaft (16) is provided with a second driven gear (18), and the sliding cylinder (3) is fixed with a rack (19) that can mesh with the second driven gear (18).

5. The low angle long hole anti- drift device according to claim 4, characterized in that: The swing frame (2) is provided with a ratchet assembly (20) that can limit the second rotating shaft (13). The ratchet assembly (20) includes two ratchets (21) fixed on the second rotating shaft (13). The swing frame (2) is hinged with pawls (22) that correspond one-to-one with the ratchets (21) and can be inserted between the ratchet teeth on the ratchets (21). The swing frame (2) is provided with a spring plate (23) that contacts the pawl (22).

6. The low angle long hole anti- drift device according to claim 1, characterized in that: The angle adjustment assembly (7) includes a first drive shaft (24), a rotatable first drive shaft (24) is provided on the fixed frame (1), a first drive gear (25) is fixed on the first drive shaft (24), a rotatable first driven shaft (26) is provided on the fixed frame (1), a first driven gear (27) that can mesh with the first drive gear (25) is provided on the first driven shaft (26), a first rotating handle (28) is provided at one end of the first driven shaft (26), the other end of the first driven shaft (26) is connected to the swing frame (2), and a locking mechanism (29) that can lock the first drive gear (25) is provided on the fixed frame (1).

7. The low angle long hole anti- drift device according to claim 6, characterized in that: The locking mechanism (29) includes a locking block (30), which is slidably connected to the fixed frame (1). The locking block (30) can be inserted between two adjacent teeth on the first drive gear (25). A locking rod (31) that can contact the locking block (30) is rotatably connected to the fixed frame (1). When the locking rod (31) rotates, the locking rod (31) engages with the locking block (30) and limits the locking block (30).

Images