Anchoring drill rod device and using method

Abstract

The invention relates to the technical field of mine engineering and drilling, in particular to an anchoring drill rod device and a using method.The anchoring drill rod device comprises a drill bit, a rod body, a telescopic assembly and a hydraulic driving assembly.The rod body is internally provided with a cavity for installing the telescopic assembly, and one end of the telescopic assembly extends into the cavity to be hinged to the drill bit; the telescopic assembly stretches or contracts in the extending direction of the rod body to change the radial size of the drill bit, and the hydraulic driving assembly is connected with the telescopic assembly to provide stretching or contracting power for the telescopic assembly. According to the anchoring drill rod device, the size of the drill bit can be adjusted, and the applicability of drilling and anchoring is improved.

Description

Technical Field

[0001] The invention relates to the field of mining engineering and drilling technology, and in particular to an anchoring drill rod device and a use method thereof. Background Art

[0002] In mining and tunnel construction, anchoring technology is an important means to ensure structural stability and safety. For different construction environments, the borehole diameter has different selection requirements. The properties of coal and rock formations are different, and the required borehole diameter is also different. The existing drill rod device has some limitations in the process of hole expansion, such as the drill bit radius is fixed and cannot be flexibly adjusted. Different models of drill rigs and drill bits can only be used under the premise of matching the construction design requirements and equipment models. The drilling technology is in a state of "one drill for a certain hole", that is, the diameter of the borehole drilled by the drill rig depends on the size of the selected drill bit, and the drilled hole is the same diameter from beginning to end, resulting in poor adaptability under different geological conditions. Summary of the invention

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

[0004] To this end, an embodiment of the present invention provides an anchoring drill rod device, which can adjust the size of the drill bit and improve the applicability of drilling anchoring. An embodiment of the present invention also provides a method for using the anchoring drill rod device.

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

[0006] A drill bit, a rod body and a telescopic assembly, wherein the rod body has a cavity for installing 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 contracts in the extension direction of the rod body to change the radial size 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 contract.

[0008] The anchoring drill rod device of the embodiment of the present invention can adjust the size of the drill bit and improve the applicability of drilling anchoring.

[0009] In some embodiments, the drill bit includes a drill bit body, a connecting tube 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, the drill bit body is connected to an end of the connecting tube away from the rod body,

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

[0011] The plurality of connecting rods correspond one-to-one to the plurality of first rods or the plurality of second rods,

[0012] The telescopic component is installed in the cavity, one end of the telescopic component away from the rod body passes through the connecting tube and is hinged to the connecting rod, and the multiple 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 seat, the mounting seat is arranged in the cavity and forms a first cavity with the cavity, and the mounting seat has a moving cavity at one end away from the drill bit.

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

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

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

[0017] In some embodiments, the anchoring drill rod device also includes a size adjustment assembly, which includes a driving member, a screw and a sleeve arranged on the rod body, the sleeve is connected to one end of the second tube extending out of the movable cavity, and the screw is threadedly connected to the sleeve, and the output end of the driving member is connected to the screw.

[0018] In some embodiments, the size adjustment assembly further includes a rotation monitoring member, and the rotation monitoring member is disposed at the output end of the driving member 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 rod.

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

[0020] In some embodiments, the hydraulic drive assembly includes a hydraulic output component and a pressure monitoring component, the hydraulic output component is respectively connected to the oil inlet chamber and the first chamber to input or output hydraulic oil, the pressure monitoring component is suitable for monitoring the hydraulic pressure of the first chamber and the oil inlet chamber, and 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 for using the anchor drill rod device according to the embodiment of the present invention, using the above-mentioned anchor drill rod device, comprises:

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

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

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

[0025] The method for using the anchoring drill rod device of the embodiment of the present invention can adjust the size of the drill bit and improve the applicability of drilling anchoring. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 2 Schematic diagram of a telescopic assembly 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 the embodiment of the present invention.

[0029] Reference numerals:

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

[0031] Rod body 2, first cavity 21,

[0032] Telescopic assembly 3, connecting rod 31, telescopic component 32, mounting seat 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, driving member 41, screw rod 42, sleeve 43. DETAILED DESCRIPTION

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

[0035] The anchoring drill rod device according to the embodiment of the present invention comprises 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 size of the drill bit 1.

[0036] The hydraulic drive assembly is connected to the telescopic assembly 3 to provide the telescopic assembly 3 with power for extension or contraction.

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

[0038] Specifically, Figures 1 to 3 As shown, the rod body 2 extends in the front-to-back direction, and a cavity is provided inside the rod body 2 to install the telescopic assembly 3. The rear end of the telescopic assembly 3 is installed in the cavity, and the telescopic end of the telescopic assembly 3 extends out of the cavity and is connected to the drill bit 1 to change the radial size of the drill bit 1.

[0039] The hydraulic drive assembly is suitable for providing hydraulic oil to the telescopic assembly 3 to drive the telescopic assembly 3 to telescope in the front-rear direction to change the radial size of the drill bit 1. The diameter of the borehole is changed by changing the radial size of the drill bit 1, that is, when the shallow surrounding rock anchoring drilling needs to reduce the drilling radius, the radial size of the borehole is set to reduce the radius of the borehole, thereby reducing the damage of the drilling to the shallow surrounding rock, thereby protecting the bearing structure of the shallow surrounding rock of the tunnel and improving the safety of the overall construction.

[0040] The hydraulic drive component is suitable for providing hydraulic oil to the telescopic component 3 to drive the telescopic component 3 to extend and retract in the front-to-back direction. When drill jamming occurs, the hydraulic drive component drives the telescopic component 3 to contract in the front-to-back direction to reduce or increase the radial size of the drill bit 1, and flexibly adjusts the radial size of the drill bit 1 to facilitate the drill bit 1 to retract.

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

[0042] In some embodiments, the drill bit 1 includes a drill bit body 11, a connecting tube 12 disposed on the 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, the telescopic assembly 3 includes a telescopic component 32 and a plurality of connecting rods 31, the drill bit body 11 is connected to an end of the connecting tube 12 away from the rod body 2,

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

[0044] The plurality of connecting rods 31 correspond one to one with the plurality of first rods 13 or the plurality of second rods 14.

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

[0046] Specifically, Figures 1 to 3 As shown, the rear end of the connecting tube 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 in the connecting tube 12 and is hinged to the rear end of the connecting rod 31, the telescopic component 32 is telescopic in the front-to-back direction, the front end of the first rod 13 is hinged to the drill body 11, the rear end of the first rod 13 is hinged to the front end of the second rod 14, and the rear end of the second rod 14 is hinged to the front end of the connecting tube 12, the front end of the connecting rod 31 is hinged to the first rod 13 or the second rod 14, or the connecting rod 31 is hinged to the connection between the first rod 13 and the second rod 14, and then when the telescopic component 32 is extended in the front-to-back direction, the connecting rod 31 drives the first rod 13 and the second rod 14 to rotate to tilt in the direction away from the telescopic component 32, so as to increase the radial size of the drill 1. Alternatively, when the telescopic component 32 is contracted in the front-to-back direction, the connecting rod 31 drives the first rod 13 and the second rod 14 to rotate to tilt in the direction close to the telescopic component 32, thereby reducing the radial size of the drill 1.

[0047] In other words, the first rod 13, the second rod 14, the connecting tube 12, and the telescopic component 32 are hinged: the front end of the first rod 13 is hinged to the drill body 11, so that it can rotate relative to the drill body 11. The rear end of the first rod 13 is hinged to the front end of the second rod 14, and the rear end of the second rod 14 is hinged to the front end of the connecting tube 12. In this way, the first rod 13 and the second rod 14 form a lever system that can rotate relative to the connecting tube 12. The front end of the connecting rod 31 can be hinged to the first rod 13 or the second rod 14, or to the connection between them. This hinged method allows the connecting rod 31 to drive the first rod 13 and the second rod 14 to rotate relative to the connecting tube 12 or the drill body 11.

[0048] The anchoring drill rod device of an embodiment of the present invention is provided with a telescopic component 32, a connecting rod 31, a first rod 13 and a second rod 14. When the telescopic component 32 is extended and retracted between the front and rear defense lines, the connecting rod 31 drives the first rod 13 and the second rod 14 to tilt away from or close to the connecting tube 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 component 32 includes a push rod 322 and a mounting seat 321. The mounting seat 321 is arranged in the cavity to form a first cavity 21 with the cavity. The end of the mounting seat 321 away from the drill bit 1 has a moving cavity 3211.

[0050] One end of the push rod 322 extends into the moving chamber 3211 to separate the moving chamber 3211 into an oil inlet chamber 3212 and an oil outlet chamber 3213. The first chamber 21 is connected to the oil outlet chamber 3213. The other end of the push rod 322 extends into the moving chamber 3211 and passes through the connecting tube 12 to be hinged to the connecting rod 31. The hydraulic drive assembly is respectively connected to the oil inlet chamber 3212 and the first chamber 21. The mounting seat 321 has a moving chamber 3211. Further, the mounting seat 321 has a mounting groove. The inner wall surface of the mounting groove and the inner wall surface of the cavity of the rod body 2 form the moving chamber 3211, which facilitates the hydraulic oil to enter and exit the oil inlet chamber 3212 to push the push rod 322 to move in the front and rear directions.

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

[0052] Furthermore, when the push rod 322 moves forward, the hydraulic drive assembly pumps hydraulic oil into the oil inlet chamber 3212, and refluxes or pumps the hydraulic oil into the first chamber 21 and the oil outlet chamber 3213, thereby increasing the hydraulic oil in the oil inlet chamber 3212 and decreasing the hydraulic oil in the first chamber 21 and the oil outlet chamber 3213, thereby facilitating the push rod 322 to move forward.

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

[0054] The anchoring drill rod device of the embodiment of the present invention is provided with a push rod 322 and a mounting seat 321. When the push rod 322 moves forward and backward, the hydraulic drive assembly pumps hydraulic oil into or out of the oil outlet chamber 3213, the first chamber 21 and the oil inlet chamber 3212 to move the push rod 322 in the forward and backward directions, thereby improving the stability and safety of the device operation. At the same time, the hydraulic drive system is respectively connected to the first chamber 21 and the oil inlet chamber 3212, that is, the hydraulic drive has two hydraulic inlets and outlets. Compared with one hydraulic inlet and outlet, the 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 the forward and backward directions by the hydraulic drive assembly, thereby increasing the flexibility of the device. By controlling the hydraulic oil flow and pressure of the two hydraulic inlets and outlets respectively, the moving speed and force of the push rod 322 can be more accurately adjusted, thereby achieving more efficient energy utilization. Maintaining an appropriate pressure balance between the two hydraulic inlets and outlets helps to reduce stress concentration and wear inside the system, thereby improving the stability and service life of the system.

[0055] In some embodiments, the push rod 322 includes a first tube 3221 and a second tube 3222, the first tube 3221 is disposed in the moving cavity 3211, and the outer wall surface of the first tube 3221 contacts the inner wall surface of the moving cavity 3211 to separate the moving cavity 3211, one end of the second tube 3222 is connected to the first tube 3221, and the other end of the second tube 3222 extends out of the moving cavity 3211 and is hinged to the connecting rod 31. Alternatively, the oil inlet cavity 3212 can also be surrounded by the rear end surface of the first tube 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, Figures 1 to 3 As shown, the first cylinder 3221 and the second cylinder 3222 extend in the front-to-back direction, the first cylinder 3221 divides the moving chamber 3211 into an oil inlet chamber 3212 and an oil outlet chamber 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 chamber 3211 and passes through the connecting cylinder 12 in the front-to-back direction and is hinged to the rear end of the connecting rod 31. The hydraulic drive assembly pumps or sucks hydraulic oil into the oil inlet chamber 3212 and the oil outlet chamber 3213 to generate a pressure difference between the oil inlet chamber 3212 and the oil outlet chamber 3213 on both sides of the first cylinder 3221 in the front-to-back direction, pushes the first cylinder 3221 to move in the front-to-back direction, and then pushes the second cylinder 3222 to move in the front-to-back direction to drive the connecting rod 31 to rotate relative to the second cylinder 3222, and finally drives the first rod 13 and the second rod 14 to move closer to or farther from the connecting cylinder 12 to achieve the change of the radial size 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 movable cavity 3211 to separate the movable cavity 3211, and at the same time, the radial dimension of the second cylinder 3222 is smaller than the radial dimension of the first cylinder 3221, so that the first cylinder 3221 and the second cylinder 3222 are integrally formed. The integrally formed design reduces the number of connecting components, reduces the risk of failure due to loose connection or failure, and improves the strength and reliability of the overall structure.

[0058] In some embodiments, the anchoring drill rod device also includes a size adjustment component 4, which includes a driving member 41, a screw 42 and a sleeve 43 arranged on the rod body 2, the sleeve 43 is connected to one end of the second tube 3222 extending out of the movable cavity 3211, and the screw 42 is threadedly connected to the sleeve 43, and the output end of the driving member 41 is connected to the screw 42.

[0059] Specifically, Figures 1 to 3 As shown, the driving member 41 is arranged at the front end of the mounting seat 321, and the output end of the driving member 41 is connected to the rear end of the screw 42. The sleeve 43 of the screw 42 is sleeved on the screw 42, and the driving member 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-to-back direction. The hydraulic driving component is suitable for pumping hydraulic oil 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-to-back direction as a whole. At the same time, the sleeve 43 is threadedly connected to the screw 42. The displacement of the push rod 322 in the front-to-back direction can be controlled by controlling the rotation angle of the screw 42, and finally the change in the radial size of the drill bit 1 can be controlled. Compared with the change in the radial size of the drill bit 1 controlled by hydraulic drive, the displacement of the push rod 322 in the front-to-back direction is controlled by controlling the rotation angle of the screw 42, which is more accurate, and the accuracy of controlling the drilling radius can be improved.

[0060] Furthermore, the output hydraulic pressure of the hydraulic drive assembly can be set by the rotation angle of the screw 42, and the hydraulic pressure size can be set by different radii of the drill bit 1, thereby improving the stability of the drill bit 1 after adjustment, and at the same time avoiding excessive hydraulic pressure difference between the oil inlet chamber 3212 and the oil outlet chamber 3213 output by the hydraulic drive assembly, resulting in a force between the push rod 322 and the screw 42 that exceeds 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, and the rotation monitoring component is arranged at the output end of the driving 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, so that the hydraulic pressure output by the hydraulic drive component is positively correlated with the position of the push rod 322 in the front and rear directions, 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, and multiple size adjustment components 4 are arranged at intervals in the circumferential direction of the rod body 2. Multiple size adjustment components 4 are arranged at intervals in the circumferential direction of the rod body 2, which can ensure that the rod body 2 can be subjected to uniform driving force or supporting force in all directions. This helps to reduce deformation or damage of the rod body 2 caused by excessive force on a single point. The uniformly distributed size adjustment components 4 can provide more stable support and drive, thereby improving the stability of the entire system. This design helps to reduce vibration and noise and improve the operating efficiency of the system.

[0063] In some embodiments, the hydraulic drive assembly includes a hydraulic output component and a pressure monitoring component. The hydraulic output component is respectively connected to the oil inlet chamber 3212 and the first chamber 21 to input or output hydraulic oil. The pressure monitoring component is suitable for monitoring the hydraulic pressure of the first chamber 21 and the oil 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 of the pressure monitoring component. The pressure monitoring component obtains the hydraulic pressure value in the oil outlet chamber 3213 by detecting the hydraulic pressure of the first chamber 21.

[0064] Specifically, Figures 1 to 3 As shown, the pressure monitoring component is used to monitor the hydraulic pressure values ​​of the first chamber 21 and the oil inlet chamber 3212 in real time, and then obtain the hydraulic pressure difference between the oil inlet chamber 3212 and the oil outlet chamber 3213 on the front and rear sides of the first cylinder 3221. The hydraulic output component adjusts the output or input hydraulic pressure according to the input data of the pressure monitoring component. It avoids the mismatch between the hydraulic pressure difference and the position of the screw rod 42 in the front and rear direction, resulting in unnecessary wear between the screw rod 42 and the push rod 322. At the same time, the hydraulic output component can also control the hydraulic pressure in the oil inlet chamber 3212 and the oil outlet chamber 3213, and then control the pressure difference between the oil inlet chamber 3212 and the oil outlet chamber 3213.

[0065] In other words, by controlling the hydraulic pressure difference and the position of the screw 42, unnecessary wear caused by the mismatch between the hydraulic pressure difference and the position of the screw 42 is avoided. This kind of wear is caused by the hydraulic pressure difference being too large or too small, which causes the push rod 322 to move in the front-to-back direction relative to the screw 42, thereby causing the push rod 322 and the screw 42 to wear.

[0066] The method for using the anchor drill rod device according to the embodiment of the present invention, using the above-mentioned anchor drill rod device, comprises:

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

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

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

[0070] By controlling the rotation angle of the screw 42, the radial dimension of the drill bit 1 can be indirectly adjusted. The position of the push rod 322 in the front-to-back direction is determined by the rotation angle of the screw 42, and the output hydraulic pressure of the hydraulic drive assembly is started at the same time 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-to-back direction, which can not only improve the stability of the drill bit 1 when in use, but also avoid the mismatch between the hydraulic pressure difference and the position of the push rod 322 in the front-to-back direction, resulting in the front-to-back force between the push rod 322 and the size adjustment component, avoid unnecessary wear between the size adjustment component 4 and the push rod 322, and thus improve the stability and safety during anchoring.

[0071] The method for using the anchoring drill rod device of the embodiment of the present invention can adjust the size of the drill bit 1 and improve the applicability of drilling anchoring. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0072] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0073] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0075] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0076] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An anchoring drill rod device, characterized in that: include: A drill bit, a rod body and a telescopic assembly, wherein the rod body has a cavity for installing 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 contracts in the extension direction of the rod body to change the radial size of the drill bit; A hydraulic drive assembly is connected to the telescopic assembly to provide power for the telescopic assembly to extend or contract.

2. The anchoring drill rod device according to claim 1, characterized in that: The drill bit comprises a drill bit body, a connecting tube arranged on the rod body, a plurality of first rods and a plurality of second rods rotatably and circumferentially arranged on the drill bit body, the telescopic assembly comprises a telescopic component and a plurality of connecting rods, the drill bit body is connected to an end of the connecting tube away from the rod body, One end of the second rod is hinged to the connecting tube, the other end of the second rod is hinged to the first rod, and the connecting rod is hinged to the first rod or the second rod. The plurality of connecting rods correspond one-to-one to the plurality of first rods or the plurality of second rods, The telescopic component is installed in the cavity, one end of the telescopic component away from the rod body passes through the connecting tube and is hinged to the connecting rod, and the multiple connecting rods are arranged at intervals in the circumferential direction of the telescopic component.

3. The anchoring drill rod device according to claim 2, characterized in that: The telescopic component comprises a push rod and a mounting seat, wherein the mounting seat is arranged in the cavity and forms a first cavity with the cavity, and the mounting seat has a moving cavity at one end away from the drill bit. One end of the push rod extends into the moving chamber to divide the moving chamber into an oil inlet chamber and an oil outlet chamber, the first chamber is connected to the oil outlet chamber, the other end of the push rod extends into the moving chamber and passes through the connecting tube to be hinged to the connecting rod, and the hydraulic drive assembly is respectively connected to the oil inlet chamber and the first chamber.

4. The anchoring drill rod device according to claim 3, characterized in that: The push rod includes a first tube and a second tube. The first tube is arranged in the moving cavity, and the outer wall surface of the first tube contacts the inner wall surface of the moving cavity to separate the moving cavity. One end of the second tube is connected to the first tube, and the other end of the second tube extends out of the moving cavity and is hinged to the connecting rod.

5. The anchoring drill rod device according to claim 4, characterized in that: The radial dimension of the first tube is at least partially larger than the radial dimension of the second tube, and the first tube and the second tube are integrally formed.

6. The anchoring drill rod device according to claim 4, characterized in that: It also includes a size adjustment component, which includes a driving member, a screw and a sleeve arranged on the rod body, the sleeve is connected to one end of the second tube extending out of the movable cavity, and the screw is threadedly connected to the sleeve, and the output end of the driving member is connected to the screw.

7. The anchoring drill rod device according to claim 6, characterized in that: The size adjustment assembly further includes a rotation monitoring member, and the rotation monitoring member is arranged at the output end of the driving member 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 rod.

8. The anchoring drill rod device according to claim 7, characterized in that: There are multiple size adjustment components, and the multiple size adjustment components are arranged at intervals in the circumferential direction of the rod body.

9. The anchoring drill rod device according to any one of claims 3 to 8, characterized in that: The hydraulic drive assembly includes a hydraulic output component and a pressure monitoring component. The hydraulic output component is respectively connected to the oil inlet chamber and the first chamber to input or output hydraulic oil. The pressure monitoring component is suitable for monitoring 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.

10. A method for using an anchoring drill rod device, using the above-mentioned anchoring drill rod device, characterized in that: include: Determine the preset radial dimension of the drill bit; The rotation angle of the screw is set by presetting the radial dimension of the drill bit; The output hydraulic pressure of the hydraulic drive assembly is set by the rotation angle of the screw.

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