Anchored drill pipe apparatus and method of use

Abstract

The present application relates to the field of mine engineering and drilling technology, and particularly relates to an anchoring drill rod device and a use method, the anchoring drill rod device comprises a drill bit, a rod body, a telescopic assembly and a hydraulic drive assembly, the rod body has a cavity for installing the telescopic assembly, one end of the telescopic assembly extends into the cavity and is hinged to the drill bit, the telescopic assembly extends or contracts in the extension direction of the rod body to change the radial size of the drill bit, and the hydraulic drive assembly is connected with the telescopic assembly to provide power for the extension or contraction of the telescopic assembly. The anchoring drill rod device can adjust the size of the drill bit and improve the applicability of hole anchoring.

Description

Technical Field

[0001] This invention relates to the fields of mining engineering and drilling technology, specifically to an anchoring drill rod device and its usage method. Background Technology

[0002] In mining and tunnel construction, anchoring technology is a crucial means of ensuring structural stability and safety. Different construction environments require different borehole diameters. The properties of coal and rock strata vary, necessitating different borehole diameters. Existing drill rod devices have limitations in borehole enlargement, such as fixed drill bit radii that cannot be flexibly adjusted. Different drilling rigs and drill bits can only be used when the construction design requirements and equipment models match. Drilling technology is essentially in a "one-drill-one-hole" state, meaning the borehole diameter depends on the size of the selected drill bit, and the borehole remains the same diameter throughout, resulting in poor adaptability to different geological conditions. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention provide an anchoring drill rod device that can adjust the size of the drill bit, thereby improving the applicability of borehole anchoring. Embodiments of the present invention also provide a method for using the anchoring drill rod device.

[0005] An anchoring drill rod device according to an embodiment of the present invention includes:

[0006] A drill bit, a rod body, and a telescopic assembly, wherein the rod body has a cavity for mounting the telescopic assembly, and one end of the telescopic assembly extends into the cavity and is hinged to the drill bit, and the telescopic assembly extends or retracts in the extension direction of the rod body to change the radial dimension of the drill bit;

[0007] A hydraulic drive assembly is connected to the telescopic assembly to provide power for the telescopic assembly to extend or retract.

[0008] The anchoring drill rod device of the present invention can adjust the size of the drill bit to improve the applicability of borehole anchoring.

[0009] In some embodiments, the drill bit includes a drill bit body, a connecting sleeve disposed on the rod body, a plurality of first rods and a plurality of second rods rotatably and circumferentially disposed on the drill bit body, the telescopic assembly includes a telescopic component and a plurality of connecting rods, and the drill bit body is connected to the end of the connecting sleeve away from the rod body.

[0010] One end of the second rod is hinged to the connecting cylinder, and the other end of the second rod is hinged to the first rod. The connecting rod is hinged to either the first rod or the second rod.

[0011] Each of the aforementioned connecting rods corresponds one-to-one with one of the first rods or one of the second rods.

[0012] The telescopic component is installed in the cavity, and the end of the telescopic component away from the rod passes through the connecting cylinder and is hinged to the connecting rod. The plurality of connecting rods are arranged at intervals in the circumferential direction of the telescopic component.

[0013] In some embodiments, the telescopic component includes a push rod and a mounting base, the mounting base being disposed within the cavity and forming a first cavity with the cavity, the end of the mounting base remote from the drill bit having a movable cavity.

[0014] One end of the push rod extends into the moving cavity to divide the moving cavity into an oil inlet cavity and an oil outlet cavity. The first cavity is connected to the oil outlet cavity. The other end of the push rod extends into the moving cavity and passes through the connecting cylinder and is hinged to the connecting rod. The hydraulic drive assembly is connected to the oil inlet cavity and the first cavity respectively.

[0015] In some embodiments, the push rod includes a first cylinder and a second cylinder. The first cylinder is disposed in the movable cavity, and the outer wall surface of the first cylinder contacts the inner wall surface of the movable cavity to separate the movable cavity. One end of the second cylinder is connected to the first cylinder, and the other end of the second cylinder extends out of the movable cavity and is hinged to the connecting rod.

[0016] In some embodiments, the radial dimension of the first cylinder is at least partially larger than the radial dimension of the second cylinder, and the first cylinder and the second cylinder are integrally formed.

[0017] In some embodiments, the anchoring drill rod device further includes a size adjustment assembly, which includes a drive member, a screw, and a sleeve disposed on the rod body. The sleeve is connected to one end of the second cylinder extending out of the moving cavity, and the screw is threadedly connected to the sleeve. The output end of the drive member is connected to the screw.

[0018] In some embodiments, the size adjustment assembly further includes a rotation monitoring element, which is disposed at the output end of the drive member to monitor the displacement of the push rod in the rod extension direction by monitoring the rotation angle of the screw.

[0019] In some embodiments, the number of the size adjustment components is multiple, and the multiple size adjustment components are arranged at intervals in the circumferential direction of the rod.

[0020] In some embodiments, the hydraulic drive assembly includes a hydraulic output component and a pressure monitoring component. The hydraulic output component is connected to the oil inlet chamber and the first chamber respectively to input or output hydraulic oil. The pressure monitoring component is adapted to monitor the hydraulic pressure of the first chamber and the oil inlet chamber. The pressure monitoring component is connected to the hydraulic output component so that the hydraulic output component adjusts the output or input hydraulic pressure according to the input data of the pressure monitoring component.

[0021] The method of using the anchoring drill rod device according to an embodiment of the present invention, utilizing the above-described anchoring drill rod device, includes:

[0022] Determine the preset radial dimension of the drill bit;

[0023] The rotation angle of the screw is set by pre-setting the radial dimension of the drill bit;

[0024] The output hydraulic pressure of the hydraulic drive component is set by the rotation angle of the screw.

[0025] The method of using the anchoring drill rod device according to the embodiments of the present invention can adjust the size of the drill bit and improve the applicability of drilling anchoring. Attached Figure Description

[0026] Figure 1 This is one of the schematic diagrams of the anchoring drill rod device according to an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the telescopic component according to an embodiment of the present invention.

[0028] Figure 3 This is the second schematic diagram of the anchoring drill rod device according to an embodiment of the present invention.

[0029] Figure label:

[0030] Drill bit 1, drill bit body 11, connecting sleeve 12, first rod 13, second rod 14.

[0031] Rod 2, First cavity 21

[0032] Telescopic assembly 3, connecting rod 31, telescopic component 32, mounting base 321, moving cavity 3211, oil inlet cavity 3212, oil outlet cavity 3213, push rod 322, first cylinder 3221, second cylinder 3222.

[0033] Size adjustment component 4, drive component 41, screw 42, sleeve 43. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0035] According to an embodiment of the present invention, the anchoring drill rod device includes a drill bit 1, a rod body 2 and a telescopic assembly 3. The rod body 2 has a cavity for installing the telescopic assembly 3, and one end of the telescopic assembly 3 extends into the cavity and is hinged to the drill bit 1. The telescopic assembly 3 extends or contracts in the extension direction of the rod body 2 to change the radial dimension of the drill bit 1.

[0036] A hydraulic drive assembly is connected to the telescopic assembly 3 to provide power for the telescopic assembly 3 to extend or retract.

[0037] The anchoring drill rod device of the present invention can adjust the size of the drill bit 1 to improve the applicability of drilling anchoring.

[0038] Specifically, such as Figures 1 to 3 As shown, the rod 2 extends in the front-to-back direction. The rod 2 has a cavity for installing the telescopic assembly 3. The rear end of the telescopic assembly 3 is installed within the cavity, and the telescopic end of the telescopic assembly 3 extends out of the cavity and connects to the drill bit 1 to change the radial dimension of the drill bit 1.

[0039] The hydraulic drive assembly is adapted to supply hydraulic oil to the telescopic assembly 3 to drive the telescopic assembly 3 to extend and retract in the front-to-back direction, thereby changing the radial dimension of the drill bit 1. Furthermore, by changing the radial dimension of the drill bit 1, the borehole diameter is changed. That is, when anchoring boreholes in shallow surrounding rock where a smaller borehole radius is required, by setting the radial dimension of the borehole, the borehole radius is reduced, thereby reducing damage to the shallow surrounding rock, protecting the load-bearing structure of the shallow surrounding rock in the roadway, and improving the overall construction safety.

[0040] The hydraulic drive assembly is adapted to supply hydraulic oil to the telescopic assembly 3 to drive the telescopic assembly 3 to extend and retract in the front-to-back direction. When a stuck drill occurs, the hydraulic drive assembly drives the telescopic assembly 3 to retract in the front-to-back direction to reduce or increase the radial dimension of the drill bit 1, so as to flexibly adjust the radial dimension of the drill bit 1 to facilitate the retraction of the drill bit 1.

[0041] The anchoring drill rod device of the present invention, by setting the telescopic component 3 and the hydraulic drive component, can flexibly adjust the size of the drill bit 1, thereby improving the applicability of drilling anchoring.

[0042] In some embodiments, the drill bit 1 includes a drill bit body 11, a connecting cylinder 12 disposed on a rod body 2, a plurality of first rods 13 and a plurality of second rods 14 rotatably and circumferentially disposed on the drill bit body 11, and the telescopic assembly 3 includes a telescopic component 32 and a plurality of connecting rods 31. The drill bit body 11 is connected to the end of the connecting cylinder 12 away from the rod body 2.

[0043] One end of the second rod 14 is hinged to the connecting cylinder 12, and the other end of the second rod 14 is hinged to the first rod 13. The connecting rod 31 is hinged to either the first rod 13 or the second rod 14.

[0044] Multiple connecting rods 31 correspond one-to-one with multiple first rods 13 or multiple second rods 14.

[0045] The telescopic component 32 is installed in the cavity. The end of the telescopic component 32 away from the rod body 2 passes through the connecting cylinder 12 and is hinged to the connecting rod 31. Multiple connecting rods 31 are arranged at intervals in the circumferential direction of the telescopic component 32.

[0046] Specifically, such as Figures 1 to 3 As shown, the rear end of the connecting cylinder 12 is connected to the front end of the rod body 2. The rear end of the telescopic component 32 is installed in the cavity. The front end of the telescopic component 32 passes through the hollow cavity inside the connecting cylinder 12 and is hinged to the rear end of the connecting rod 31. The telescopic component 32 extends and retracts in the front-rear direction. The front end of the first rod 13 is hinged to the drill bit body 11, and the rear end of the first rod 13 is hinged to the front end of the second rod 14. The rear end of the second rod 14 is also hinged to the front end of the connecting cylinder 12. The front end of the connecting rod 31 is hinged to either the first rod 13 or the second rod 14, or the connecting rod 31 is hinged at the connection point between the first rod 13 and the second rod 14. Thus, when the telescopic component 32 extends in the front-rear direction, the connecting rod 31 drives the first rod 13 and the second rod 14 to rotate and tilt away from the telescopic component 32, thereby increasing the radial dimension of the drill bit 1. Alternatively, when the telescopic component 32 retracts in the front-rear direction, the connecting rod 31 drives the first rod 13 and the second rod 14 to rotate and tilt towards the telescopic component 32, thereby reducing the radial dimension of the drill bit 1.

[0047] In other words, the first rod 13, the second rod 14, the connecting cylinder 12, and the telescopic component 32 are hinged as follows: the front end of the first rod 13 is hinged to the drill bit body 11, allowing it to rotate relative to the drill bit body 11. The rear end of the first rod 13 is hinged to the front end of the second rod 14, while the rear end of the second rod 14 is hinged to the front end of the connecting cylinder 12. Thus, the first rod 13 and the second rod 14 form a lever system that can rotate relative to the connecting cylinder 12. The front end of the connecting rod 31 can be hinged to either the first rod 13 or the second rod 14, or to the junction of the two. This hinged configuration allows the connecting rod 31 to drive the first rod 13 and the second rod 14 to rotate together relative to the connecting cylinder 12 or the drill bit body 11.

[0048] The anchoring drill rod device of the present invention includes a telescopic component 32, a connecting rod 31, a first rod 13, and a second rod 14. When the telescopic component 32 extends or retracts along the front and rear lines, the connecting rod 31 drives the first rod 13 and the second rod 14 to tilt away from or towards the connecting cylinder 12 and the drill bit body 11, thereby flexibly adjusting the size of the drill bit 1 and improving the applicability of drilling anchoring.

[0049] In some embodiments, the telescopic member 32 includes a push rod 322 and a mounting base 321. The mounting base 321 is disposed within the cavity and forms a first cavity 21 with the cavity. The end of the mounting base 321 away from the drill bit 1 has a movable cavity 3211.

[0050] One end of the push rod 322 extends into the movable cavity 3211 to divide the movable cavity 3211 into an oil inlet cavity 3212 and an oil outlet cavity 3213. The first cavity 21 communicates with the oil outlet cavity 3213. The other end of the push rod 322 extends into the movable cavity 3211 and passes through the connecting cylinder 12 and is hinged to the connecting rod 31. The hydraulic drive assembly is connected to the oil inlet cavity 3212 and the first cavity 21 respectively. The mounting base 321 has a movable cavity 3211. Furthermore, the mounting base 321 has a mounting groove. The inner wall of the mounting groove and the inner wall of the cavity of the rod body 2 form the movable cavity 3211, which facilitates the entry and exit of hydraulic oil into the oil inlet cavity 3212 to push the push rod 322 to move in the back-and-forth direction.

[0051] Specifically, such as Figures 1 to 3 As shown, push rod 322 extends in the front-to-back direction, and its rear end extends into moving cavity 3211. Push rod 322 divides moving cavity 3211 into an oil inlet cavity 3212 and an oil outlet cavity 3213 that are not connected. Oil inlet cavity 3212 is connected to hydraulic drive assembly to receive input or output hydraulic oil to push push rod 322 to move in the front-to-back direction. Mounting base 321 is cylindrical, and the outer surface of mounting base 321 and the inner wall of the cavity of rod body 2 form a first cavity 21, which communicates with oil outlet cavity 3213.

[0052] As the push rod 322 moves forward, the hydraulic drive assembly pumps hydraulic oil into the inlet chamber 3212 and returns or pumps hydraulic oil back into the first chamber 21 and the outlet chamber 3213. As a result, the amount of hydraulic oil in the inlet chamber 3212 increases, while the amount of hydraulic oil in the first chamber 21 and the outlet chamber 3213 decreases, which facilitates the forward movement of the push rod 322.

[0053] Alternatively, when push rod 322 moves backward, the hydraulic drive assembly pumps hydraulic oil into outlet chamber 3213 and first chamber 21, and pumps hydraulic oil from inlet chamber 3212 back to the hydraulic drive assembly, thereby moving push rod 322 backward. That is, the hydraulic drive assembly starts working when the radius of drill bit 1 needs to be adjusted. By pumping hydraulic oil into or out of outlet chamber 3213 and inlet chamber 3212, the pressure difference between these two chambers is changed. Due to the pressure difference, push rod 322 is subjected to hydraulic pressure and moves in the forward and backward direction. The hydraulic system has characteristics such as stable pressure and controllable flow, thereby improving the stability and safety during operation.

[0054] The anchoring drill rod device of this embodiment of the invention, by setting a push rod 322 and a mounting base 321, allows the hydraulic drive assembly to pump hydraulic oil into or out of the oil outlet chamber 3213, the first chamber 21, and the oil inlet chamber 3212 when the push rod 322 moves back and forth, thereby moving the push rod 322 in the back-and-forth direction and improving the stability and safety of the device operation. Simultaneously, the hydraulic drive system is connected to the first chamber 21 and the oil inlet chamber 3212 respectively, meaning the hydraulic drive has two hydraulic inlets and outlets. Compared to a single hydraulic inlet and outlet, two hydraulic inlets and outlets allow the hydraulic system to independently control the flow of hydraulic oil in two directions. The push rod 322 can be controlled to move in both back-and-forth directions by the hydraulic drive assembly, increasing the flexibility of the device. By controlling the hydraulic oil flow and pressure at the two hydraulic inlets and outlets respectively, the moving speed and force of the push rod 322 can be more precisely adjusted, thereby achieving more efficient energy utilization. Maintaining appropriate pressure balance between the two hydraulic inlets and outlets helps reduce stress concentration and wear within the system, thereby improving the system's stability and service life.

[0055] In some embodiments, the push rod 322 includes a first cylinder 3221 and a second cylinder 3222. The first cylinder 3221 is disposed within the moving cavity 3211, and the outer wall surface of the first cylinder 3221 contacts the inner wall surface of the moving cavity 3211, separating the moving cavity 3211. One end of the second cylinder 3222 is connected to the first cylinder 3221, and the other end of the second cylinder 3222 extends out of the moving cavity 3211 and is hinged to the connecting rod 31. Alternatively, the oil inlet cavity 3212 may be formed by the rear end face of the first cylinder 3221, the inner wall surface of the moving cavity 3211, and the inner wall surface of the rear end of the cavity of the rod body 2.

[0056] Specifically, such as Figures 1 to 3 As shown, the first cylinder 3221 and the second cylinder 3222 extend in the front-rear direction. The first cylinder 3221 divides the moving cavity 3211 into an oil inlet cavity 3212 and an oil outlet cavity 3213. The front end of the first cylinder 3221 is connected to the second cylinder 3222. The rear end of the second cylinder 3222 extends out of the moving cavity 3211 and passes through the connecting cylinder 12 in the front-rear direction, hinged to the rear end of the connecting rod 31. The hydraulic drive assembly pumps or draws hydraulic oil into the oil inlet cavity 3212 and the oil outlet cavity 3213 to create a pressure difference between the oil inlet cavity 3212 and the oil outlet cavity 3213 on both sides of the first cylinder 3221 in the front-rear direction. This causes the first cylinder 3221 to move in the front-rear direction, which in turn causes the second cylinder 3222 to move in the front-rear direction, thereby causing the connecting rod 31 to rotate relative to the second cylinder 3222. Finally, this causes the first rod 13 and the second rod 14 to move closer to or further away from the connecting cylinder 12 to achieve a change in the radial dimension of the drill bit 1.

[0057] Furthermore, the radial dimension of the first cylinder 3221 is at least partially larger than the radial dimension of the second cylinder 3222 so that the outer peripheral surface of the first cylinder 3221 contacts the inner wall surface of the moving cavity 3211 to separate the moving cavity 3211. At the same time, the radial dimension of the second cylinder 3222 is smaller than the radial dimension of the first cylinder 3221. Moreover, the first cylinder 3221 and the second cylinder 3222 are integrally formed. The integral forming design reduces the number of connecting parts, reduces the risk of failure due to loose or failed connections, and improves the strength and reliability of the overall structure.

[0058] In some embodiments, the anchoring drill rod device further includes a size adjustment assembly 4, which includes a drive member 41, a screw 42 and a sleeve 43 disposed on the rod body 2. The sleeve 43 is connected to one end of the second cylinder 3222 that extends out of the moving cavity 3211, and the screw 42 is threadedly connected to the sleeve 43. The output end of the drive member 41 is connected to the screw 42.

[0059] Specifically, such as Figures 1 to 3 As shown, the drive component 41 is located at the front end of the mounting base 321. The output end of the drive component 41 is connected to the rear end of the screw 42. The sleeve 43 is sleeved on the screw 42. The drive component 41 rotates to drive the screw 42 to rotate, thereby causing the sleeve 43 to drive the second cylinder 3222 to move in the front-back direction. In conjunction with the hydraulic drive assembly, hydraulic oil is pumped into or out of the oil inlet chamber 3212 and the oil outlet chamber 3213, thereby driving the push rod 322 to move in the front-back direction as a whole. At the same time, the sleeve 43 is threadedly connected to the screw 42. By controlling the rotation angle of the screw 42, the displacement of the push rod 322 in the front-back direction can be controlled, and the change of the radial dimension of the drill bit 1 can be ultimately controlled. Compared with using hydraulic drive to control the change of the radial dimension of the drill bit 1, controlling the displacement of the push rod 322 in the front-back direction by controlling the rotation angle of the screw 42 is more precise and can improve the accuracy of controlling the drilling radius.

[0060] Furthermore, the output hydraulic pressure of the hydraulic drive component can be set by the rotation angle of the screw 42, and the hydraulic pressure can be set by different radii of the drill bit 1 to improve the stability of the drill bit 1 after adjustment. At the same time, it avoids that the hydraulic pressure difference between the oil inlet chamber 3212 and the oil outlet chamber 3213 of the hydraulic drive component is too large, which would cause the force between the push rod 322 and the screw 42 to exceed the preset range, thereby improving the stability and safety of the device operation.

[0061] Furthermore, the size adjustment component 4 also includes a rotation monitoring component, which is set at the output end of the drive component 41 to monitor the movement displacement of the push rod 322 in the extension direction of the rod body 2 by monitoring the rotation angle of the screw 42, thereby improving the accuracy of monitoring the movement of the push rod 322, making the hydraulic pressure output by the hydraulic drive component positively correlated with the position of the push rod 322 in the front-rear direction, and avoiding excessive wear caused by the interaction force between the push rod 322 and the screw 42 exceeding the preset range.

[0062] Furthermore, there are multiple size adjustment components 4, which are spaced apart circumferentially around the rod 2. This spacing ensures that the rod 2 receives uniform driving or supporting forces in all directions. This helps reduce deformation or damage to the rod 2 caused by excessive force at a single point. The evenly distributed size adjustment components 4 provide more stable support and drive, thereby improving the overall system stability. This design helps reduce vibration and noise, and improves system operating efficiency.

[0063] In some embodiments, the hydraulic drive assembly includes a hydraulic output component and a pressure monitoring component. The hydraulic output component is connected to the inlet chamber 3212 and the first chamber 21 respectively to input or output hydraulic oil. The pressure monitoring component is adapted to monitor the hydraulic pressure in the first chamber 21 and the inlet chamber 3212. The pressure monitoring component is connected to the hydraulic output component so that the hydraulic output component adjusts the output or input hydraulic pressure according to the input data from the pressure monitoring component. The pressure monitoring component obtains the hydraulic pressure value in the outlet chamber 3213 by detecting the hydraulic pressure in the first chamber 21.

[0064] Specifically, such as Figures 1 to 3 As shown, the pressure monitoring device is used to monitor the hydraulic values ​​of the first chamber 21 and the inlet chamber 3212 in real time, thereby obtaining the hydraulic pressure difference between the inlet chamber 3212 and the outlet chamber 3213 on both sides of the first cylinder 3221. The hydraulic output device adjusts the output or input hydraulic pressure according to the input data of the pressure monitoring device. This avoids the hydraulic pressure difference from being mismatched with the position of the screw 42 in the front-rear direction, which would lead to unnecessary wear between the screw 42 and the push rod 322. At the same time, the hydraulic output device can also control the hydraulic pressure in the inlet chamber 3212 and the outlet chamber 3213, thereby controlling the pressure difference between the inlet chamber 3212 and the outlet chamber 3213.

[0065] In other words, by controlling the hydraulic differential and the position of the screw 42 in coordination, unnecessary wear caused by the mismatch between the hydraulic differential and the screw 42's position is avoided. This wear occurs when the hydraulic differential is too large or too small, causing the push rod 322 to have a tendency to move relative to the screw 42 in the front-back direction, which in turn leads to wear on both the push rod 322 and the screw 42.

[0066] The method of using the anchoring drill rod device according to an embodiment of the present invention, utilizing the above-described anchoring drill rod device, includes:

[0067] Determine the preset radial dimension of drill bit 1;

[0068] The rotation angle of the screw 42 is set by the preset radial dimension of the drill bit 1;

[0069] The output hydraulic pressure of the hydraulic drive assembly is set by the rotation angle of screw 42.

[0070] The radial dimension of the drill bit 1 can be indirectly adjusted by controlling the rotation angle of the screw 42. The position of the push rod 322 in the front-rear direction is determined by the rotation angle of the screw 42. At the same time, the output hydraulic pressure of the hydraulic drive component is activated to match the hydraulic pressure difference between the oil inlet chamber 3212 and the oil outlet chamber 3213 with the position of the push rod 322 in the front-rear direction. This not only improves the stability of the drill bit 1 during use, but also avoids the front-rear force between the push rod 322 and the size adjustment component caused by the mismatch between the hydraulic pressure difference and the position of the push rod 322 in the front-rear direction. This avoids unnecessary wear between the size adjustment component 4 and the push rod 322, thereby improving the stability and safety during anchoring.

[0071] The method of using the anchoring drill rod device according to embodiments of the present invention can adjust the size of the drill bit 1, thereby improving the applicability of drilling anchoring. In the description of the present invention, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They 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.

[0072] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0073] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0074] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0075] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0076] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An anchoring drill rod device, characterized in that, include: The system comprises a drill bit, a rod body, a telescopic assembly, and a size adjustment assembly. The rod body has a cavity for mounting the telescopic assembly, and one end of the telescopic assembly extends into the cavity and is hinged to the drill bit. The telescopic assembly extends or retracts in the extension direction of the rod body to change the radial dimension of the drill bit, thereby changing the borehole diameter. In shallow rock anchoring boreholes where a smaller borehole radius is required, the borehole radius is reduced by setting the radial dimension of the borehole. A hydraulic drive assembly is connected to the telescopic assembly to provide the power for the extension or retraction of the telescopic assembly. The drill bit includes a drill bit body, a connecting cylinder disposed on the rod body, and a plurality of first rods and a plurality of second rods rotatably and circumferentially disposed on the drill bit body. The telescopic assembly includes a telescopic component and a plurality of connecting rods. The drill bit body is connected to the end of the connecting cylinder away from the rod body. One end of the second rod is hinged to the connecting cylinder, and the other end of the second rod is hinged to the first rod. The connecting rod is hinged to either the first rod or the second rod. Each of the aforementioned connecting rods corresponds one-to-one with one of the first rods or one of the second rods. The telescopic component is installed in the cavity, and the end of the telescopic component away from the rod passes through the connecting cylinder and is hinged to the connecting rod. The plurality of connecting rods are arranged at intervals in the circumferential direction of the telescopic component. The telescopic component includes a push rod and a mounting base. The mounting base is disposed within the cavity and forms a first cavity with the cavity. The end of the mounting base away from the drill bit has a movable cavity. One end of the push rod extends into the movable cavity to divide the movable cavity into an oil inlet cavity and an oil outlet cavity. The first cavity and the oil outlet cavity are in communication. The other end of the push rod extends into the movable cavity and passes through the connecting cylinder and is hinged to the connecting rod. The hydraulic drive assembly is connected to the oil inlet cavity and the first cavity respectively. The push rod includes a first cylinder and a second cylinder. The first cylinder is disposed within the movable cavity, and the outer wall surface of the first cylinder contacts the inner wall surface of the movable cavity to separate the movable cavity. One end of the second cylinder is connected to the first cylinder, and the other end of the second cylinder extends out of the movable cavity and is hinged to the connecting rod. The size adjustment assembly includes a drive member, a screw, and a sleeve mounted on the rod body. The sleeve is connected to one end of the second cylinder extending out of the moving cavity, and the screw is threadedly connected to the sleeve. The output end of the drive member is connected to the screw. The drive member rotates to drive the screw to rotate, thereby causing the sleeve to move the second cylinder in the front-back direction. In conjunction with the hydraulic drive assembly, hydraulic oil is pumped into or out of the oil inlet and outlet chambers, thereby driving the push rod as a whole to move in the front-back direction. At the same time, the sleeve is threadedly connected to the screw to control the rotation angle of the screw, thereby controlling the displacement of the push rod in the front-back direction, and ultimately controlling the change in the radial dimension of the drill bit.

2. The anchoring drill rod device according to claim 1, characterized in that, The radial dimension of the first cylinder is at least partially larger than that of the second cylinder, and the first cylinder and the second cylinder are integrally formed.

3. The anchoring drill rod device according to claim 1, characterized in that, The size adjustment assembly also includes a rotation monitoring element, which is disposed at the output end of the drive element to monitor the movement displacement of the push rod in the extension direction of the rod body by monitoring the rotation angle of the screw.

4. The anchoring drill rod device according to claim 3, characterized in that, The number of the size adjustment components is multiple, and the multiple size adjustment components are arranged at intervals in the circumferential direction of the rod.

5. The anchoring drill rod device according to any one of claims 2-4, characterized in that, The hydraulic drive assembly includes a hydraulic output component and a pressure monitoring component. The hydraulic output component is connected to the oil inlet chamber and the first chamber respectively to input or output hydraulic oil. The pressure monitoring component is adapted to monitor the hydraulic pressure of the first chamber and the oil inlet chamber. The pressure monitoring component is connected to the hydraulic output component so that the hydraulic output component adjusts the output or input hydraulic pressure according to the input data of the pressure monitoring component.

6. A method of using an anchoring drill rod device, comprising the anchoring drill rod device according to any one of claims 1-5, characterized in that, include: Determine the preset radial dimension of the drill bit; The rotation angle of the screw is set by pre-setting the radial dimension of the drill bit; The output hydraulic pressure of the hydraulic drive component is set by the rotation angle of the screw.

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