Anchoring cable hole-forming device for loose-packed strata

Abstract

The utility model provides a kind of anchor cable hole-forming device for loose accumulation stratum, it is related to drilling technology, specifically disclose the mounting base and drilling tool rack, drilling tool rack rotation is arranged in one side of mounting base, support frame is rotationally arranged on mounting base, the free end of support frame is slidably arranged on the outside of drilling tool rack, driving structure for driving support frame rotation is equipped on mounting base, drilling driving structure is installed on drilling tool rack, drilling tool rod is equipped on drilling tool rack, it further includes mounting seat, mounting hole is formed in the side wall of mounting seat, drilling tool connecting seat is rotationally arranged in mounting hole, internal thread hole is formed in the side wall of drilling tool connecting seat, external thread is formed in the outer side wall of drilling tool rod, and is screw-connected with internal thread hole, drilling driving structure and drilling tool connecting seat are detachably connected, so that drilling tool can be always vertically aligned with operation surface, even in slope or uneven loose stratum, vertical hole-forming can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of drilling technology, and more specifically, to an anchor cable drilling device for loosely deposited strata. Background Technology

[0002] In geotechnical engineering, particularly in slope protection and foundation pit anchoring, it is often necessary to drill anchor cable holes in loose, accumulated strata (such as fill, gravel layers, and fractured rock). These strata have low strength, poor self-stability, and are easily disturbed, posing significant challenges to drilling operations. Traditional drill rods cause considerable disturbance to the borehole wall when drilling in loose strata, easily leading to instability, collapse, "necking," or even complete blockage. This not only severely affects the quality of the borehole, preventing successful anchor cable installation or resulting in poor grouting, but may also cause construction safety accidents. While existing technologies utilize casing for wall protection, these methods often suffer from problems such as untimely follow-up, poor wall protection, cumbersome operation, or ineffective casing follow-up in complex strata. Utility Model Content

[0003] The purpose of this invention is to provide an anchor cable drilling device for loosely deposited strata, which addresses the shortcomings of existing technologies and solves the problems mentioned in the background.

[0004] The technical solution of this utility model is implemented as follows: This utility model provides an anchor cable drilling device for loosely deposited strata, including a mounting base and a drill string frame. The drill string frame is rotatably mounted on one side of the mounting base, and a support frame is rotatably mounted on the mounting base. The free end of the support frame is slidably mounted on the outer side of the drill string frame. The mounting base is provided with a drive structure for driving the support frame to rotate. A drilling drive structure is mounted on the drill string frame, and a drill string rod is provided on the drill string frame. The device also includes a mounting seat, with a mounting hole on the side wall of the mounting seat. A drill string connecting seat is rotatably mounted in the mounting hole. An internal thread hole is provided on the side wall of the drill string connecting seat, and an external thread is provided on the outer side wall of the drill string rod to be threaded into the internal thread hole. The drilling drive structure and the drill string connecting seat are detachably connected.

[0005] In some technical solutions of this utility model, a clamping structure is slidably provided along the extension direction of the drill bit frame, and the clamping structure is detachably connected to the mounting base.

[0006] In some technical solutions of this utility model, a guide tube is sleeved on the outer wall of the drill rod, the mounting seat is embedded in the guide tube, and a stop ring seat is installed on the side of the mounting seat away from the drill bit.

[0007] In some technical solutions of this utility model, an assembly port is opened on the side of the drill string connector away from the drill string rod, the output end of the drilling drive structure is embedded in the assembly port, a limit port is opened on the outer side wall of the drill string connector, a limit rod is inserted through the limit port, and a portion of the limit rod is embedded in the output end of the drilling drive structure.

[0008] In some technical solutions of this utility model, the drive structure includes a telescopic rod installed in the mounting base, and the telescopic end of the telescopic rod is connected to the support frame.

[0009] In some technical solutions of this utility model, the clamping structure includes two arc-shaped rods arranged in pairs and a slide block. The arc-shaped rods are rotatably mounted on the side wall of the slide block. A torsion spring is provided between the slide block and the arc-shaped rods. A ring-shaped limiting groove is opened on the outer side wall of the blocking ring seat, and a portion of the arc-shaped rod is embedded in the limiting groove.

[0010] In some technical solutions of this utility model, the limiting groove is equipped with limiting teeth, and the arc-shaped rod is provided with a locking groove that matches the limiting teeth.

[0011] In some technical solutions of this utility model, the limiting rod is threadedly connected to the limiting port.

[0012] Compared to existing technologies, this utility model has at least the following advantages or beneficial effects: The drill bit frame is rotatably mounted on one side of the mounting base via a shaft and hinge seat. One end of the support frame is rotatably mounted on the mounting base, and the other end is slidably mounted on the outside of the drill bit frame via a sliding sleeve. The drive structure on the mounting base drives the support frame to rotate. The rotation of the support frame causes the drill bit frame to adjust its pitch angle with the mounting base as the fulcrum. This ensures that the drill bit is always vertically aligned with the working face, even in slopes or uneven loose strata, ensuring vertical hole formation and greatly improving hole formation accuracy and anchoring effect. The mounting base has a rotatable drill bit connecting seat with an internal threaded hole that connects to the external thread of the drill rod. The output end of the drilling drive structure is inserted into the assembly port of the drill bit connecting seat and locked by a limiting rod passing through the limiting port and the groove of the output end of the drive structure. The drilling drive structure transmits torque to the drill rod through the detachable drill bit connecting seat. The mechanical lock formed by the limiting rod passing through the connecting seat and the drive output end provides strong radial shear resistance, effectively preventing the connection from disengaging under high torque conditions and ensuring efficient and reliable power transmission. A guide tube is fitted over the drill string, and a mounting seat is embedded inside the guide tube. A stop ring is installed on the side of the mounting seat opposite the drill bit to prevent guide tube deviation from causing borehole instability. A clamping structure contacts the top of the guide tube, applying downward pressure to assist its smooth advance. A torsion spring keeps the arc-shaped rod tightly against the limiting groove, and the limiting teeth engage with the locking groove to provide strong anti-reverse locking force, effectively resisting vibration and impact, ensuring the clamping structure remains firm and secure under complex working conditions, and guaranteeing stable guide tube advance. Furthermore, the clamping structure can drive the guide tube and drill string to advance synchronously. The guide tube enters the formation simultaneously with the drill string, immediately isolating the drill string from the borehole wall, providing immediate support for loose and easily collapsing borehole walls during drilling, effectively preventing borehole wall collapse. The mounting seat restricts radial sway of the guide tube and drill string. Attached Figure Description

[0013] Figure 1 This is a front view structural diagram of the present invention.

[0014] Figure 2 This is a schematic diagram of the installation structure of the casing and drill rod in this utility model.

[0015] Figure 3 This is a schematic diagram of the installation structure of the mounting base and the stop ring base in this utility model.

[0016] Reference numerals in the attached drawings: 1. Mounting base; 2. Telescopic rod; 3. Support frame; 4. Drilling drive structure; 5. Drill tool frame; 6. Stop ring seat; 7. Arc rod; 8. Guide tube; 9. Mounting seat; 10. Limiting rod; 11. Drill tool rod; 12. Slide seat; 13. Limiting tooth. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] 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 this invention without inventive effort are within the scope of protection of this invention.

[0019] Example This utility model provides an anchor cable drilling device for loosely deposited strata, such as Figures 1-3 As shown, the system includes a mounting base 1 and a drill string frame 5. Both the mounting base 1 and the drill string frame 5 are frame structures. Preferably, a self-propelled structure can also be installed on the mounting base 1 to allow for position adjustment of the above structure during drilling. A drilling drive structure 4 is mounted on the drill string frame 5, and a drill rod 11 is also mounted on the drill string frame 5. During construction, the mounting base 1 needs to be fixed to the working surface, and then the position of the drill string frame 5 is adjusted so that the drilling drive structure 4 and the drill rod 11 mounted on the drill string frame 5 are aligned with the excavation position. The drilling drive structure 4 moves along the drilling direction of the drill rod 11. The drill string frame 5 is rotatably mounted on one side of the mounting base 1. A support frame 3 is rotatably mounted on the mounting base 1 via a shaft and a hinge seat. The support frame 3 is made of an H-shaped frame. The free end of the support frame 3 is slidably mounted on the outside of the drill string frame 5 via a sliding sleeve structure. The mounting base 1 has a drive structure that rotates the support frame 3, allowing the support frame 3 and drill string frame 5 to rotate relative to each other. When the drive structure pushes the support frame 3 to rotate, the drill string frame 5 adjusts its pitch angle using the mounting base 1 as a fulcrum. As the support frame 3 adjusts the drill string angle, vertical drilling is ensured in slopes or uneven, loose formations. The system also includes a mounting base 9, with a mounting hole on its side wall. A drill string connecting seat is rotatably mounted within the mounting hole. An internal threaded hole is located on the side wall of the drill string connecting seat. An external thread, which connects to the internal threaded hole, is located on the outer side wall of the drill string rod 11. The drilling drive structure 4 is detachably connected to the drill string connecting seat. The drilling drive structure 4 transmits torque to the drill string rod 11 through the detachable drill string connecting seat, achieving efficient power transmission. Furthermore, the drill string rod 11 is threadedly fixed to the connecting seat, facilitating quick replacement of drill strings of different specifications.

[0020] In some technical solutions of this utility model, a clamping structure is slidably provided along the extension direction of the drill bit frame 5, and the clamping structure is detachably connected to the mounting base 9. The clamping structure slides along the extension direction of the drill bit frame 5 and moves the mounting base 9 accordingly. The clamping structure is fixed to the mounting base 9 by a mechanical locking mechanism. The clamping structure clamps the mounting base 9 through its internal arc-shaped rod 7, and then contacts the top of the guide tube 8, applying downward pressure to the guide tube 8. This allows the clamping structure to drive the guide tube 8 and the drill bit rod 11 to advance synchronously during drilling, and the mounting base 9 restricts the radial movement of the guide tube 8 to prevent the guide tube 8 from swaying and causing the borehole wall to collapse.

[0021] In some technical solutions of this utility model, a guide tube 8 is sleeved on the outer wall of the drill rod 11, and a mounting seat 9 is embedded in the guide tube 8. A stop ring seat 6 is installed on the side of the mounting seat 9 opposite to the drill bit. The guide tube 8 is sleeved on the outside of the drill rod 11, and the mounting seat 9 is embedded in the guide tube 8 to restrict the radial displacement of the guide tube 8. The stop ring seat 6 restricts the axial displacement of the guide tube 8. When the guide tube 8 enters the ground with the drill rod 11, the guide tube 8 isolates the drill rod 11 from the borehole wall. The stop ring seat 6 abuts against the surface of the formation where the guide tube 8 enters, forming a protective wall structure. The guide tube 8 supports the loose borehole wall and reduces drilling disturbance. The stop ring seat 6 can force the guide tube 8 to move with the drill rod 11 and limit the drilling depth of the guide tube 8 to avoid over-drilling. The end of the stop ring seat 6 is provided with a countersink that matches the guide tube 8.

[0022] In some technical solutions of this utility model, an assembly port is opened on the side of the drill string connector away from the drill rod 11. The output end of the drilling drive structure 4 is embedded in the assembly port. A limiting port is opened on the outer wall of the drill string connector, and a limiting rod 10 passes through the limiting port. The limiting rod 10 is partially embedded in the output end of the drilling drive structure 4. When the output end of the drilling drive structure 4 is inserted into the assembly port, the limiting rod 10 passes through the limiting port and is embedded in the corresponding groove of the output end for locking. The limiting rod 10 simultaneously passes through the drill string connector and the output end of the drive structure, achieving radial shear resistance and mechanical locking, eliminating the risk of disengagement under high torque conditions. The drive structure can be disassembled by pulling out the limiting rod 10, improving maintenance efficiency.

[0023] In some technical solutions of this utility model, the drive structure includes a telescopic rod 2 installed in the mounting base 1, and the telescopic end of the telescopic rod 2 is connected to the support frame 3. The telescopic rod 2 (hydraulic / electric) extends or retracts, pushing the support frame 3 to rotate around the mounting base 1. The stroke of the telescopic rod 2 precisely controls the drill bit inclination angle. When hydraulic drive is used, it can support a heavy drill bit frame 5.

[0024] Preferably, there are two sets of telescopic rods 2, both of which are hydraulic telescopic rods 2.

[0025] In some technical solutions of this utility model, the clamping structure includes two paired arc-shaped rods 7 and a slide block 12. The arc-shaped rods 7 are rotatably mounted on the side wall of the slide block 12. A torsion spring is provided between the slide block 12 and the arc-shaped rods 7. A ring-shaped limiting groove is formed on the outer side wall of the stop ring seat, and a portion of the arc-shaped rod 7 is embedded in the limiting groove. Limiting teeth 13 are installed in the limiting groove, and locking grooves matching the limiting teeth 13 are formed on the arc-shaped rods 7. The slide block 12 slides along the drill bit frame 5, and the torsion spring pushes the arc-shaped rods 7 into the limiting groove of the stop ring seat; the limiting teeth 13 are embedded in the locking groove to complete the locking; the preload of the torsion spring keeps the arc-shaped rods 7 tightly against the limiting groove; the limiting teeth 13 mesh with the locking groove to prevent slippage; the limiting teeth 13-groove meshing resists vibration and impact, ensuring zero loosening of the clamp.

[0026] In some technical solutions of this utility model, the limiting rod 10 is threadedly connected to the limiting port. The limiting rod 10 is screwed into the thread in the limiting port, and the end limiting tooth 13 is inserted into the locking groove of the drive output end to prevent the limiting rod 10 from retracting.

[0027] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An anchor line hole forming apparatus for loose bulk strata, characterized in that, The system includes a mounting base (1) and a drill bit frame (5). The drill bit frame (5) is rotatably mounted on one side of the mounting base (1). A support frame (3) is rotatably mounted on the mounting base (1). The free end of the support frame (3) is slidably mounted on the outside of the drill bit frame (5). The mounting base (1) is provided with a drive structure that drives the support frame (3) to rotate. A drilling drive structure (4) is mounted on the drill bit frame (5). A drill rod (11) is mounted on the drill bit frame (5). The system also includes a mounting seat (9). A mounting hole is opened on the side wall of the mounting seat (9). A drill bit connection seat is rotatably mounted in the mounting hole. The output end of the drilling drive structure (4) and the drill rod (11) are both connected to the drill bit connection seat. A guide tube (8) is sleeved on the outer side wall of the drill rod (11). The mounting seat (9) is embedded in the guide tube (8). A stop ring seat is mounted on the side of the mounting seat (9) away from the drill bit.

2. An anchor line hole making device for loose bulk strata according to claim 1, characterised in that, A clamping structure is slidably provided along the extension direction of the drill bit frame (5), and the clamping structure is detachably connected to the mounting base (9).

3. The anchor cable drilling device for loosely deposited strata according to claim 1, characterized in that, The drill bit connector has an internal threaded hole on its side wall, and the drill rod (11) has an external thread that is threaded to the internal threaded hole on its outer side wall. The drilling drive structure (4) is detachably connected to the drill bit connector.

4. An anchor cable drilling device for loosely deposited strata according to any one of claims 1-3, characterized in that, The drill bit connector has an assembly opening on the side opposite to the drill rod (11), and the output end of the drilling drive structure (4) is embedded in the assembly opening. A limit opening is opened on the outer wall of the drill bit connector, and a limit rod (10) is inserted through the limit opening. A portion of the limit rod (10) is embedded in the output end of the drilling drive structure (4).

5. The anchor cable drilling device for loosely deposited strata according to claim 1, characterized in that, The drive structure includes a telescopic rod (2) installed in the mounting base (1), and the telescopic end of the telescopic rod (2) is connected to the support frame (3).

6. The anchor cable drilling device for loosely deposited strata according to claim 2, characterized in that, The clamping structure includes two arc-shaped rods (7) arranged in pairs and a slide (12). The slide (12) is slidably disposed on the side wall of the drill frame (5). The arc-shaped rods (7) are rotatably disposed on the side wall of the slide (12). A torsion spring is provided between the slide (12) and the arc-shaped rods (7). An annular limiting groove is provided on the outer side wall of the stop ring seat. Part of the arc-shaped rods (7) is embedded in the limiting groove.

7. The anchor cable drilling device for loosely deposited strata according to claim 6, characterized in that, The limiting groove is equipped with a limiting tooth (13), and the arc rod (7) is provided with a locking groove that matches the limiting tooth (13).

8. The anchor cable drilling device for loosely deposited strata according to claim 4, characterized in that, The limiting rod (10) is threadedly connected to the limiting port.

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