Drilling and grouting pre-tightening integrated anchor rod supporting device and construction method

Abstract

The application discloses a drilling and grouting pre-tightening integrated anchor rod supporting device and a construction method. The drilling and grouting pre-tightening integrated anchor rod supporting device comprises a base, a first rotating shaft, a second rotating shaft, an anchor grouting assembly, a driving part and a transmission assembly. The first rotating shaft is rotatably arranged on the base. The first rotating shaft is provided with a first through hole. The second rotating shaft is movably arranged in the first through hole along the length direction of the first rotating shaft. The second rotating shaft is provided with a second through hole. The anchor grouting assembly is slidably arranged on the base. The anchor grouting assembly penetrates through the second through hole and is rotatably connected with the second rotating shaft. A plurality of fluid channels are arranged on the anchor grouting assembly and are respectively communicated with the first through hole. The driving part is arranged on the base. The driving part is connected with the first rotating shaft through the transmission assembly to drive the first rotating shaft to rotate. The anchor rod supporting device of the embodiment of the application avoids that the fluid channel makes rotary motion relative to the surrounding environment during the working process, so that the fluid channel is suitable for conveying fluid media which is easy to react, volatile and dissipate.

Description

Technical Field

[0001] This invention relates to the field of mine roadway support equipment technology, and in particular to an integrated drilling and pre-tightening anchor bolt support device and construction method. Background Technology

[0002] Rock bolt support can effectively control the deformation of surrounding rock and has been widely used in coal mines, metal mines and other fields at home and abroad.

[0003] Taking coal mine roadway support as an example, the anchor bolt support process is as follows: A drill rod is used to drill holes in the surrounding rock of the coal roadway; resin anchoring agent is manually inserted into the drilled holes; anchor bolts are placed in and stirred; and the anchor bolts are pre-tightened after the anchoring agent has cured. However, the following problems exist in the anchor bolt support construction process:

[0004] 1. After drilling, the surrounding rock is prone to collapse under mining stress. The step of manually inserting anchoring agent into the borehole is difficult, especially when the coal and rock mass is relatively broken or the borehole wall is uneven. It takes a certain amount of time to complete the installation of anchoring agent, which reduces the support efficiency.

[0005] 2. Drilling, installing anchoring agent, and pre-tightening require different tools, and disassembling the drill rod and switching between different tools takes a long time to complete.

[0006] Therefore, in related technologies, a multi-functional drill box is designed to integrate multiple functions such as drilling, anchoring, and pre-tightening during the anchor bolt support process, thereby improving the efficiency of anchor bolt support, reducing the labor intensity of workers, and enabling rapid tunnel excavation. However, the drawback of this drill box is that during operation, the internal fluid channels rotate relative to the surrounding environment, making it unsuitable for transporting some volatile or easily precipitated fluids. Summary of the Invention

[0007] The present invention aims to at least partially solve one of the technical problems in the related art.

[0008] Therefore, embodiments of the present invention propose an integrated drilling and pre-tightening anchor support device, wherein the drill box is suitable for conveying fluid materials that are easily reactive and easily volatile and dissipated.

[0009] The embodiments of the present invention also propose a construction method for drilling and pre-tightening integrated anchor bolt support using the above-mentioned drilling and pre-tightening integrated anchor bolt support device.

[0010] The drilling and pre-tightening integrated anchor bolt support device of this invention includes: a base, a first rotating shaft, a second rotating shaft, an anchor bolt assembly, a driving member, and a transmission assembly. The first rotating shaft is rotatably mounted on the base and has a first through hole extending along the length direction of the first rotating shaft. At least a portion of the second rotating shaft is fitted into the first through hole, and the second rotating shaft is movable along the length direction of the first rotating shaft. The second rotating shaft has a second through hole extending along the length direction of the second rotating shaft, and a sealing member is provided between the first rotating shaft and the second rotating shaft. The anchor bolt assembly is slidably mounted on the base and passes through the second through hole. The anchor bolt assembly is rotatably connected to the second rotating shaft and has multiple fluid channels respectively communicating with the first through hole. The driving member is mounted on the base and is connected to the first rotating shaft through the transmission assembly to drive the first rotating shaft to rotate.

[0011] The integrated drilling and pre-tightening anchor bolt support device of this invention uses a drive component to drive a first rotating shaft to rotate, thereby realizing the construction operations of anchor bolt drilling and pre-tightening. Fluid medium is delivered to the anchor bolt through the fluid channel of the anchoring component, thus achieving the anchor bolt anchoring operation. Furthermore, the second rotating shaft drives the anchoring component to move, avoiding interference between the anchoring component and the anchor bolt during the anchoring process. The second rotating shaft is also rotatable relative to the anchoring component, further preventing the fluid channel from rotating relative to the surrounding environment during operation, making the fluid channel suitable for conveying easily reactive and volatile fluid media.

[0012] Therefore, the drilling and pre-tightening integrated anchor bolt support device of the present invention solves the problem in the related technology that the drill box cannot transport some volatile or easily precipitated fluids.

[0013] In some embodiments, the first through hole includes an anchor section and a clearance section. The clearance section is provided with an internal thread, and the outer peripheral wall of the second rotating shaft is provided with an external thread that matches the internal thread. The second rotating shaft located in the clearance section is connected to the clearance section by a thread.

[0014] In some embodiments, the anchor injection assembly includes a liquid dispensing component and a liquid injection component. The liquid dispensing component is slidably disposed on the base along the length direction of the first rotating shaft. The liquid injection component is columnar, with a first end connected to the liquid dispensing component. The liquid injection component passes through the second through hole. The second rotating shaft is rotatably connected to the liquid injection component. The fluid channel is disposed on the liquid dispensing component and the liquid injection component.

[0015] In some embodiments, the device further includes a first limiting member and a second limiting member, which are respectively disposed in the second through hole. The first limiting member and the second limiting member are used to limit the displacement of the injection component in the length direction of the first rotating shaft.

[0016] In some embodiments, a limiting slide bar is further included. The limiting slide bar is disposed on the base, and the length direction of the limiting slide bar is consistent with the length direction of the first rotating shaft. The liquid dispensing component is provided with a limiting hole, and the limiting slide bar passes through the limiting hole. The limiting slide bar is used to limit the rotation of the anchoring assembly.

[0017] In some embodiments, there are multiple limiting slide rods and multiple limiting holes, and the multiple limiting slide rods are distributed at intervals around the injection component.

[0018] In some embodiments, a third limiting member is further included, which is disposed on the base. The third limiting member and the liquid injection member are respectively located on both sides of the liquid dispensing member in the length direction of the first rotating shaft. One end of the limiting slide rod is connected to the base, and the other end of the limiting slide rod is connected to the third limiting member.

[0019] In some embodiments, an anchor bolt adapter is further included, which is detachably connected to the first rotating shaft. The anchor bolt adapter has a mounting hole that matches the anchor bolt, and the central axis of the mounting hole is coaxial with the central axis of the first through hole.

[0020] In some embodiments, the driving element is a hydraulic motor, and the transmission assembly includes a first gear and a second gear meshing with each other, the first gear being sleeved on the output shaft of the hydraulic motor, and the second gear being sleeved on the first rotating shaft.

[0021] The present invention discloses a drilling and pre-tightening integrated anchor bolt support construction method, which is used in any of the above embodiments of the drilling and pre-tightening integrated anchor bolt support device. The construction method includes: assembling the anchor bolt on the first rotating shaft; the driving component operates and drives the first rotating shaft to rotate clockwise; the first rotating shaft drives the anchor bolt to rotate for drilling; during drilling, water is transported through one of the fluid channels to the gap between the anchor bolt and the surrounding rock to remove coal slag; after drilling is completed, the driving component stops operating, the fluid channel for transporting water is closed, and anchoring material is transported through multiple other fluid channels to the gap between the anchor bolt and the surrounding rock for anchoring; after anchoring is completed, the driving component operates and drives the first rotating shaft to rotate counterclockwise; the first rotating shaft drives the anchor bolt to rotate for pre-tightening; the first rotating shaft also drives the second rotating shaft to move translatably; the second rotating shaft drives the anchoring assembly to move translatably away from the anchor bolt to avoid it. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the integrated drilling and pre-tightening anchor bolt support device according to an embodiment of the present invention.

[0023] Figure 2 This is a front view schematic diagram of the drilling and pre-tightening integrated anchor bolt support device according to an embodiment of the present invention.

[0024] Figure 3 This is a top view of the drill-injection pre-tightening integrated anchor bolt support device according to an embodiment of the present invention, when the internal and external threads are fully engaged.

[0025] Figure 4 This is a cross-sectional schematic diagram of the drill-injection pre-tightening integrated anchor bolt support device according to an embodiment of the present invention, when the internal and external threads are fully engaged.

[0026] Figure 5 This is a top view of the drill-injection pre-tightening integrated anchor bolt support device according to an embodiment of the present invention, when the internal and external threads are not fully engaged.

[0027] Figure 6 This is a cross-sectional schematic diagram of the drill-injection pre-tightening integrated anchor bolt support device according to an embodiment of the present invention, when the internal and external threads are not fully engaged.

[0028] Figure label:

[0029] Base 1, limiting slide bar 11, third limiting component 12

[0030] First rotating shaft 2, first through hole 21

[0031] Second rotating shaft 3, second through hole 31, first limiting member 32, second limiting member 33

[0032] Anchoring assembly 4, liquid dispensing component 41, liquid injection component 42, fluid channel 43

[0033] Drive component 5

[0034] Transmission assembly 6, first gear 61, second gear 62

[0035] Anchor bolt adapter 7, mounting hole 71. Detailed Implementation

[0036] 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.

[0037] The integrated drilling and pre-tightening anchor bolt support device of the present invention is described below with reference to the accompanying drawings.

[0038] like Figures 1 to 6 As shown, the drilling and pre-tightening integrated anchor bolt support device of this embodiment includes: a base 1, a first rotating shaft 2, a second rotating shaft 3, an anchor bolt assembly 4, a driving component 5, and a transmission assembly 6.

[0039] A first rotating shaft 2 is rotatably mounted on a base 1. The first rotating shaft 2 has a first through hole 21 extending along its length. At least a portion of a second rotating shaft 3 fits within the first through hole 21. The second rotating shaft 3 is movable along the length of the first rotating shaft 2. The second rotating shaft 3 has a second through hole 31 extending along its length, and a seal (not shown) is provided between the first rotating shaft 2 and the second rotating shaft 3. An anchoring assembly 4 is slidably mounted on the base 1, passing through the second through hole 31, and rotatably connected to the second rotating shaft 3. The anchoring assembly 4 has multiple fluid channels 43 respectively communicating with the first through hole 21. A driving member 5 is mounted on the base 1 and is connected to the first rotating shaft 2 via a transmission assembly 6 to drive the first rotating shaft 2 to rotate.

[0040] Among them, such as Figure 1 As shown, the base 1 is L-shaped and includes a horizontal section and a vertical section. The front end of the horizontal section of the base 1 is connected to the lower end of the vertical section of the base 1, and the interior of the vertical section of the base 1 has a receiving cavity.

[0041] Optionally, such as Figures 1 to 6 As shown, the first rotating shaft 2 is arranged in the front-to-back direction, and the vertical section of the base 1 is provided with a rotating hole extending in the front-to-back direction so that the first rotating shaft 2 passes through the rotating hole and is rotatably connected to the vertical section of the base 1. The first rotating shaft 2 rotates around its own central axis, and the first rotating shaft 2 is provided with a first through hole 21 extending in the front-to-back direction.

[0042] Understandably, the first rotating shaft 2 is used to connect with a hollow anchor rod or drill rod (not shown in the figure) for construction to enable drilling operations. For example, as Figure 1 and Figure 6 As shown, the hollow anchor rod can be inserted into the first through hole 21 from the front side of the first rotating shaft 2.

[0043] Optionally, such as Figures 1 to 6 As shown, the second rotating shaft 3 is arranged in the front-to-back direction, and the central axis of the second rotating shaft 3 is coaxial with the central axis of the first rotating shaft 2. At least a portion of the second rotating shaft 3 is movably fitted into the first through hole 21 of the first rotating shaft 2 in the front-to-back direction, and the second rotating shaft 3 is inserted into the first through hole 21 from the rear side of the first rotating shaft 2. The second rotating shaft 3 is provided with a second through hole 31 extending in the front-to-back direction, the central axis of the second through hole 31 is coaxial with the central axis of the first through hole 21, and the front end of the second through hole 31 is connected to the first through hole 21.

[0044] Optionally, such as Figures 1 to 6As shown, the anchoring assembly 4 extends through the second through hole 31 in the front-to-back direction, so that the front end of the anchoring assembly 4 is located inside the first through hole 21, thereby connecting the outlet of the fluid channel 43 on the anchoring assembly 4 with the first through hole 21. The inlets of the multiple fluid channels 43 on the anchoring assembly 4 correspond one-to-one with multiple medium sources, including water sources, anchoring agents, etc., and the anchoring agents include one of resin anchoring agents, pumpable organic anchoring agents, or cement anchoring agents.

[0045] Furthermore, a sealing element is provided between the first rotating shaft 2 and the second rotating shaft 3. The sealing element is a dynamic seal to prevent the anchoring agent from leaking out from the annular gap between the first rotating shaft 2 and the second rotating shaft 3 during the anchoring process. For example, the sealing element is an O-ring, a V-ring, a J-ring without a frame dustproof ring, or a Y-ring.

[0046] Understandably, by having multiple fluid channels 43 corresponding one-to-one with multiple medium sources, the multiple fluid channels 43 can provide the medium according to the needs of actual working conditions. For example, during drilling, one fluid channel 43 delivers water to the anchor bolt to clean up the coal slag generated during the drilling process. During anchoring, the water supply is shut off, and the other fluid channels 43 supply anchoring agent to the anchor bolt to anchor it to the surrounding rock.

[0047] Furthermore, such as Figures 1 to 6 As shown, the anchoring assembly 4 is slidably mounted on the base 1 in the front-to-back direction. The second rotating shaft 3 is rotatably connected to the anchoring assembly 4, so that the second rotating shaft 3 can drive the anchoring assembly 4 to move in the front-to-back direction as it moves. Furthermore, the second rotating shaft 3 can rotate relative to the anchoring assembly 4, thereby preventing the first rotating shaft 2 from driving the anchoring assembly 4 to rotate. This eliminates the need for the fluid channel 43 to rotate with the first rotating shaft 2, making the fluid channel 43 suitable for conveying easily reactive and volatile fluid media. Thus, the second rotating shaft 3 serves as a connecting element between the first rotating shaft 2 and the anchoring assembly 4.

[0048] Furthermore, those skilled in the art will understand that the rotation direction during anchor drilling is opposite to the rotation direction during pre-tightening after drilling is completed. For example, if the first shaft 2 rotates clockwise to drive the anchor bolt during drilling, then after the anchor bolt is drilled and anchored, the first shaft 2 rotates counterclockwise to drive the anchor bolt for pre-tightening. During pre-tightening, the portion of the anchor bolt located within the first through hole 21 will move closer to the anchoring assembly 4. To avoid interference from the anchoring assembly 4, the second shaft 3 moves, thereby moving the anchoring assembly 4 away from the anchor bolt, thus ensuring the normal implementation of the pre-tightening operation.

[0049] Optionally, such as Figures 1 to 6As shown, the driving component 5 is mounted on the base 1, and the transmission component 6 is mounted in the receiving cavity of the base 1. The input end of the transmission component 6 is connected to the driving component 5, and the output end of the transmission component 6 is connected to the first rotating shaft 2, so that after the driving component 5 is started, the first rotating shaft 2 is driven to rotate through the transmission effect of the transmission component 6.

[0050] For example, the driving component 5 is a hydraulic motor, cylinder, hydraulic cylinder or internal combustion engine, and the transmission component 6 is one or a combination of several of the following: gear transmission mechanism, pulley transmission mechanism, thread transmission mechanism, connecting rod transmission mechanism, worm gear transmission mechanism, sprocket transmission mechanism or rope wheel transmission mechanism.

[0051] Therefore, in the drilling and pre-tightening integrated anchor bolt support device of this embodiment, the driving component 5 drives the first rotating shaft 2 to rotate via the transmission assembly 6 to realize the construction operation of anchor bolt drilling and pre-tightening. Fluid medium is delivered to the anchor bolt through the fluid channel 43 of the anchoring assembly 4, thereby realizing the anchor bolt anchoring operation. Furthermore, the second rotating shaft 3 drives the anchoring assembly 4 to move, avoiding interference between the anchoring assembly 4 and the anchor bolt during the anchoring process. The second rotating shaft 3 is also rotatable relative to the anchoring assembly 4, further preventing the fluid channel 43 from rotating relative to the surrounding environment during operation, making the fluid channel 43 suitable for conveying easily reactive and easily volatile fluid media.

[0052] In some embodiments, such as Figures 3 to 6 As shown, the first through hole 21 includes an anchor section 211 and a clearance section 212. The clearance section 212 is provided with an internal thread, and the outer peripheral wall of the second rotating shaft 3 is provided with an external thread that matches the internal thread. The second rotating shaft 3 located in the clearance section 212 is connected to the clearance section 212 by a thread.

[0053] It is understandable that the rotation direction of the first rotating shaft 2 is the same as the drilling rotation direction. When the threads of the first rotating shaft 2 and the second rotating shaft 3 are not fully engaged, the first rotating shaft 2 drives the second rotating shaft 3 to translate relative to the base 1 towards the anchor rod. After the threads are fully engaged, the second rotating shaft 3 rotates relative to the base 1. The rotation direction of the first rotating shaft 2 is the pre-tightening rotation direction, and the second rotating shaft 3 translates relative to the base 1 away from the anchor rod.

[0054] Optionally, such as Figures 3 to 6 As shown, the first through hole 21 includes a connected anchor bolt section 211 and a clearance section 212. The anchor bolt section 211 is located in front of the clearance section 212, and the rear end of the anchor bolt section 211 is connected to the front end of the clearance section 212. The anchor bolt is inserted into the first through hole 21 from the front end of the anchor bolt section 211, and the anchoring assembly 4 is inserted into the first through hole 21 from the rear end of the clearance section 212.

[0055] Optionally, such as Figures 3 to 6As shown, the external thread on the second shaft 3 is located at the front end of the second shaft 3. The internal thread of the first shaft 2 meshes with the external thread of the second shaft 3. Under the action of the threaded pair, when the first shaft 2 and the second shaft 3 rotate relative to each other, the second shaft 3 will move relative to the first shaft 2 in the front-back direction. Furthermore, the friction between the internal thread of the first shaft 2 and the external thread of the second shaft 3 is much smaller than the friction between the second shaft 3 and the anchoring assembly 4, ensuring that when the internal and external threads are not fully engaged, the first shaft 2 rotates and drives the second shaft 3 to move in the front-back direction, thereby driving the anchoring assembly 4 to move in the front-back direction.

[0056] For example, such as Figure 3 and Figure 4 As shown, the internal thread of the first rotating shaft 2 and the external thread of the second rotating shaft 3 are fully engaged. In this state:

[0057] If the first rotating shaft 2 rotates clockwise, the second rotating shaft 3 cannot move forward relative to the first rotating shaft 2 because the internal and external threads are fully engaged. Therefore, the first rotating shaft 2 drives the second rotating shaft 3 to rotate synchronously, allowing for the drilling of the anchor bolt. Furthermore, since the second rotating shaft 3 is rotatably connected to the anchoring assembly 4, the rotational movement of the anchoring assembly 4 is prevented.

[0058] If the first rotating shaft 2 reverses, since the second rotating shaft 3 can move backward relative to the first rotating shaft 2, and the frictional force of the threads between the first rotating shaft 2 and the second rotating shaft 3 is less than the frictional force of rotation between the second rotating shaft 3 and the anchoring assembly 4, the first rotating shaft 2 drives the second rotating shaft 3 to move backward, thereby driving the anchoring assembly 4 to move backward, so that the anchor bolt pre-tightening operation can be performed.

[0059] Therefore, the first rotating shaft 2 rotates clockwise and drives the anchor rod to perform drilling operations, and the first rotating shaft 2 rotates counterclockwise and drives the anchor rod to perform pre-tightening operations. Furthermore, when the first rotating shaft 2 rotates counterclockwise, it simultaneously drives the anchor injection assembly 4 to move backward, preventing the anchor injection assembly 4 from interfering with the pre-tightening of the anchor rod.

[0060] Similarly, such as Figure 5 and Figure 6 As shown, the internal thread of the first rotating shaft 2 and the external thread of the second rotating shaft 3 are not fully engaged. At this time, the first rotating shaft 2 rotates forward and drives the second rotating shaft 3 to move forward, thereby driving the anchoring assembly 4 to move forward until the internal and external threads are fully engaged, and the anchoring assembly 4 stops moving forward.

[0061] Furthermore, the distance between the anchor rod and the anchoring assembly 4 within the first through hole 21 is kept infinitely close. This ensures a small gap between them while preventing contact, thus preventing a large amount of fluid medium delivered by the anchoring assembly 4 from entering the first through hole 21. Additionally, depending on the actual working conditions, the pitch of the internal and external threads must be greater than or equal to the pitch of the tail thread of the construction anchor rod to avoid interference between the anchoring assembly 4 and the anchor rod during pre-tightening.

[0062] In some embodiments, such as Figures 1 to 6 As shown, the anchor injection assembly 4 includes a liquid dispensing component 41 and a liquid injection component 42. The liquid dispensing component 41 is slidably disposed on the base 1 along the length direction of the first rotating shaft 2. The liquid injection component 42 is cylindrical, with its first end connected to the liquid dispensing component 41. The liquid injection component 42 passes through the second through hole 31. The second rotating shaft 3 is rotatably connected to the liquid injection component 42. A fluid channel 43 is disposed on the liquid dispensing component 41 and the liquid injection component 42.

[0063] Optionally, such as Figures 1 to 6 As shown, the liquid dispensing component 41 is cuboid in shape and is located behind the first rotating shaft 2 and the second rotating shaft 3. The rear end of the liquid injection component 42 is fixedly connected to the front end of the liquid dispensing component 41, so that when the second rotating shaft 3 moves in the front-back direction, the second rotating shaft 3 drives the liquid injection component 42 and the liquid dispensing component 41 to move together in the front-back direction.

[0064] Furthermore, such as Figures 1 to 6 As shown, the injection component 42 passes through the clearance section 212 of the first through hole 21, and the second end (front end) of the injection component 42 is located inside the anchor bolt section 211, so that the work of the anchor injection assembly 4 to deliver fluid medium into the anchor bolt (that is, the anchor injection work) is carried out inside the anchor bolt section 211.

[0065] Optionally, the fluid channel 43 includes a vertical channel on the liquid dispensing component 41 and a transverse channel on the liquid injection component 42. The upper end of the vertical channel is the medium inlet and is located on the upper surface of the liquid dispensing component 41. The transverse channel extends in the front-rear direction, the lower end of the vertical channel is connected to the rear end of the transverse channel, and the front end of the transverse channel is the medium outlet and is located on the front end surface of the liquid injection component 42.

[0066] In some embodiments, such as Figure 4 or Figure 6 As shown, it also includes a first limiting member 32 and a second limiting member 33. The first limiting member 32 and the second limiting member 33 are respectively disposed in the second through hole 31. The first limiting member 32 and the second limiting member 33 are respectively used to limit the displacement of the injection member 42 in the length direction of the first rotating shaft 2.

[0067] Optionally, such as Figure 4 or Figure 6As shown, the injection component 42 includes a first segment, a second segment, and a third segment connected sequentially from front to back. The diameters of the first and third segments are smaller than the diameter of the second segment. A first limiting member 32 is located on the front side of the second segment, thereby limiting the forward movement of the injection component 42. A second limiting member 33 is located on the rear side of the second segment, thereby limiting the backward movement of the injection component 42.

[0068] Specifically, both the first limiting member 32 and the second limiting member 33 are bearings. For example... Figure 4 or Figure 6 As shown, the first limiting member 32 and the second limiting member 33 are sleeved on the liquid injection member 42. The second through hole 31 has steps and protrusions for securing the first limiting member 32 and the second limiting member 33, thereby realizing a rotatable connection between the second rotating shaft 3 and the liquid injection member 42.

[0069] In some embodiments, such as Figure 1 As shown, it also includes a limiting slide rod 11, which is provided on the base 1. The length direction of the limiting slide rod 11 is consistent with the length direction of the first rotating shaft 2. The liquid dispensing component 41 is provided with a limiting hole, through which the limiting slide rod 11 passes. The limiting slide rod 11 is used to limit the rotation of the anchor injection assembly 4.

[0070] Optionally, such as Figure 1 As shown, the central axis of the limiting hole is not coaxial with the central axis of the first rotating shaft 2. The limiting slide rod 11 is arranged in the front-back direction, and the limiting hole extends in the front-back direction. The limiting slide rod 11 passes through the limiting hole so that the liquid dispensing component 41 can slide along the length direction of the limiting slide rod 11 and also restricts the rotation of the liquid dispensing component 41.

[0071] In some embodiments, such as Figure 1 As shown, there are multiple limiting slide rods 11 and limiting holes, and they correspond one-to-one. The multiple limiting slide rods 11 are distributed at intervals around the liquid injection component 42.

[0072] Specifically, such as Figure 1 As shown, there are four limiting slide rods 11 and four limiting holes, with the four limiting holes located at the four corners of the liquid dispensing component 41. Furthermore, the four limiting slide rods 11 also serve to support the anchoring assembly 4.

[0073] In some embodiments, such as Figure 1 As shown, it also includes a third limiting member 12, which is disposed on the base 1. The third limiting member 12 and the liquid injection member 42 are respectively located on both sides of the liquid dispensing member 41 in the length direction of the first rotating shaft 2. One end of the limiting slide rod 11 is connected to the base 1, and the other end of the limiting slide rod 11 is connected to the third limiting member 12.

[0074] Optionally, such as Figure 1As shown, the third limiting member 12 is located on the rear side of the liquid dispensing member 41. The front end of the limiting slide rod 11 is connected to the vertical section of the base 1, and the rear end of the limiting slide rod 11 is connected to the third limiting member 12. It can be understood that the third limiting member 12 is used to prevent the anchoring assembly 4 from detaching from the limiting slide rod 11.

[0075] In some embodiments, such as Figures 1 to 6 As shown, it also includes an anchor bolt adapter 7, which is detachably connected to the first rotating shaft 2. The anchor bolt adapter 7 is provided with a mounting hole 71 that matches the anchor bolt, and the central axis of the mounting hole 71 is coaxial with the central axis of the first through hole 21.

[0076] Optionally, such as Figures 1 to 6 As shown, the anchor bolt adapter 7 is located at the front end of the first rotating shaft 2. Both the anchor bolt adapter 7 and the first rotating shaft 2 have corresponding screw holes so that they can be detachably connected, thus facilitating replacement.

[0077] In some embodiments, the drive element 5 is a hydraulic motor, and the transmission component 6 includes a first gear 61 and a second gear 62 that mesh with each other. The first gear 61 is sleeved on the output shaft of the hydraulic motor, and the second gear 62 is sleeved on the first rotating shaft 2.

[0078] Optionally, such as Figures 1 to 6 As shown, the drive component 5 is located to the left of the first rotating shaft 2, and both the first gear 61 and the second gear 62 are located within the receiving cavity of the vertical section of the base 1. It can be understood that when the output shaft of the hydraulic motor rotates forward, it drives the first gear 61 to rotate forward, thereby driving the second gear 62 to rotate in reverse, and thus driving the first rotating shaft 2 to rotate in reverse. Similarly, when the output shaft of the hydraulic motor rotates in reverse, it drives the first gear 61 to rotate in reverse, thereby driving the second gear 62 to rotate forward, and thus driving the first rotating shaft 2 to rotate forward.

[0079] The following describes the construction method of the integrated drilling and pre-tightening anchor bolt support according to an embodiment of the present invention.

[0080] The present invention discloses a drilling and pre-tightening integrated anchor bolt support construction method. This method is used in any of the above embodiments of the drilling and pre-tightening integrated anchor bolt support device. The construction method includes: assembling the anchor bolt onto a first rotating shaft 2; the driving component 5 operates and drives the first rotating shaft 2 to rotate clockwise; the first rotating shaft 2 drives the anchor bolt to rotate for drilling. During drilling, water is transported through one of the fluid channels 43 to the gap between the anchor bolt and the surrounding rock to remove coal slag. After drilling is completed, the driving component stops operating, and anchoring material is transported through multiple other fluid channels 43 to the gap between the anchor bolt and the borehole for anchoring. After anchoring is completed, the driving component 5 operates and drives the first rotating shaft 2 to rotate counterclockwise; the first rotating shaft 2 drives the anchor bolt to rotate for pre-tightening; the first rotating shaft 2 also drives the second rotating shaft 3 to move translatably; the second rotating shaft 3 drives the anchoring assembly 4 to move translatably away from the anchor bolt to avoid it.

[0081] Specifically, under the action of the first limiting member 32, the anchoring assembly 4 can only rotate relative to the second rotating shaft 3 and cannot translate relative to the second rotating shaft 3 along its length. That is, when the second rotating shaft 3 translates relative to the surrounding environment, the second rotating shaft 3 drives the anchoring assembly 4 to translate together. When the second rotating shaft 3 rotates relative to the surrounding environment, under the action of the limiting slide rod 11, the anchoring assembly 4 remains stationary relative to the surrounding environment.

[0082] During the drilling stage, the first rotating shaft 2 rotates under the drive of the driving component 5 and the transmission assembly 6, thereby driving the anchor bolt adapter 7 to transmit power to the anchor bolt for drilling. During this process, the internal and external threads are fully engaged, and the first rotating shaft 2 drives the second rotating shaft 3 to rotate forward together. Based on the aforementioned motion characteristics, the anchoring assembly 4 does not rotate with the second rotating shaft 3, but remains stationary relative to the surrounding environment; that is, the fluid channel 43 is stationary relative to the surrounding environment. If the internal and external threads are not fully engaged, under the action of the thread pair, the first rotating shaft 2 drives the second rotating shaft 3 to translate relative to the surrounding environment, and the anchoring assembly 4 also translates relative to the surrounding environment until the threads are fully engaged. Then, the second rotating shaft 3 rotates synchronously with the first rotating shaft 2, and the anchoring assembly 4 remains stationary relative to the surrounding environment. Therefore, throughout the entire drilling process, the anchoring assembly 4 does not rotate relative to the surrounding environment, and will not cause violent shaking of the fluid medium being transported within it.

[0083] During the anchoring stage, an external medium source is delivered to the space between the anchor bolt and the surrounding rock through fluid channel 43 to anchor the anchor bolt to the surrounding rock.

[0084] During the pre-tightening stage, the threads are initially fully engaged, and the first rotating shaft 2 rotates in the opposite direction. Under the action of the threaded pair, the first rotating shaft 2 drives the second rotating shaft 3 to move relative to the surrounding environment, leaving space for the anchor bolt pre-tightening and preventing the anchor bolt from being squeezed by the anchor injection assembly 4 during pre-tightening. The threads gradually change from fully engaged to partially engaged until the pre-tightening of the anchor bolt is completed.

[0085] Therefore, the integrated drilling and pre-tightening anchor bolt support device of this embodiment of the invention comprehensively realizes the drilling, anchoring, and pre-tightening functions in the anchor bolt construction process by utilizing the driving component 5, the transmission component 6, the first rotating shaft 2, the second rotating shaft 3, and the anchoring component 4. During drilling, the fluid channel 43 does not need to rotate. Compared with drill boxes in related technologies, it eliminates the need for multiple seals and annular grooves to achieve dynamic fluid transport. Furthermore, the fluid transported during operation does not need to rotate with the power output components, making it suitable for transporting easily reactive and volatile fluid media.

[0086] Furthermore, the first rotating shaft 2, driven by the driving component 5, rotates in one direction, which can drive the relevant anchor rods and drill rods to perform drilling operations, and the fluid channel 43 provides a path for the delivery of anchoring material. When the first rotating shaft 2 rotates in another direction, it can achieve pre-tightening of the anchor rods.

[0087] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A drill-injection pre-tightening integrated anchor bolt support device, characterized in that, include: Base; A first rotating shaft is rotatably mounted on the base, and the first rotating shaft is provided with a first through hole extending along the length direction of the first rotating shaft; The second rotating shaft is at least partially fitted into the first through hole. The second rotating shaft is movable along the length direction of the first rotating shaft. The second rotating shaft is provided with a second through hole extending along the length direction of the second rotating shaft, and a sealing element is provided between the first rotating shaft and the second rotating shaft. An anchoring assembly, which is slidably mounted on the base, passes through the second through hole, is rotatably connected to the second rotating shaft, and has multiple fluid channels that are respectively connected to the first through hole; A driving component and a transmission assembly are provided. The driving component is disposed on the base. The driving component is connected to the first rotating shaft through the transmission assembly to drive the first rotating shaft to rotate. When the first rotating shaft rotates, the anchoring assembly does not rotate with the first rotating shaft.

2. The integrated drilling and pre-tightening anchor bolt support device according to claim 1, characterized in that, The first through hole includes an anchor section and a clearance section. The clearance section is provided with an internal thread, and the outer peripheral wall of the second rotating shaft is provided with an external thread that matches the internal thread. The second rotating shaft located in the clearance section is connected to the clearance section by a thread.

3. The integrated drilling and pre-tightening anchor bolt support device according to claim 2, characterized in that, The anchor injection assembly includes a liquid dispensing component and a liquid injection component. The liquid dispensing component is slidably disposed on the base along the length direction of the first rotating shaft. The liquid injection component is columnar. The first end of the liquid injection component is connected to the liquid dispensing component. The liquid injection component passes through the second through hole. The second rotating shaft is rotatably connected to the liquid injection component. The fluid channel is disposed on the liquid dispensing component and the liquid injection component.

4. The integrated drill-and-pour pre-tightening anchor bolt support device according to claim 3, characterized in that, It also includes a first limiting member and a second limiting member, which are respectively disposed in the second through hole. The first limiting member and the second limiting member are used to limit the displacement of the injection component in the length direction of the first rotating shaft.

5. The integrated drilling and pre-tightening anchor bolt support device according to claim 4, characterized in that, It also includes a limiting slide rod, which is disposed on the base. The length direction of the limiting slide rod is consistent with the length direction of the first rotating shaft. The liquid dispensing component is provided with a limiting hole, through which the limiting slide rod passes. The limiting slide rod is used to limit the rotation of the anchoring assembly.

6. The integrated drill-and-pour pre-tightening anchor bolt support device according to claim 5, characterized in that, There are multiple limiting slide rods and multiple limiting holes, and they correspond one-to-one. The multiple limiting slide rods are distributed at intervals around the liquid injection component.

7. The integrated drill-and-pour pre-tightening anchor bolt support device according to claim 6, characterized in that, It also includes a third limiting member, which is disposed on the base. The third limiting member and the liquid injection member are respectively located on both sides of the liquid dispensing member in the length direction of the first rotating shaft. One end of the limiting slide rod is connected to the base, and the other end of the limiting slide rod is connected to the third limiting member.

8. The integrated drilling and pre-tightening anchor bolt support device according to claim 1, characterized in that, It also includes an anchor bolt adapter, which is detachably connected to the first rotating shaft. The anchor bolt adapter has a mounting hole that matches the anchor bolt, and the central axis of the mounting hole is coaxial with the central axis of the first through hole.

9. The integrated drilling and pre-tightening anchor bolt support device according to claim 1, characterized in that, The driving component is a hydraulic motor, and the transmission assembly includes a first gear and a second gear that mesh with each other. The first gear is sleeved on the output shaft of the hydraulic motor, and the second gear is sleeved on the first rotating shaft.

10. A construction method for integrated drilling and pre-tightening anchor bolt support, characterized in that, The construction method is used for the drill-and-cast-pre-tightened integrated anchor bolt support device as described in any one of claims 1-9, and the construction method includes: The anchor rod is assembled on the first rotating shaft, the driving component runs and drives the first rotating shaft to rotate forward, and the first rotating shaft drives the anchor rod to rotate to perform drilling; During drilling, water is delivered through one of the fluid channels to the gap between the anchor bolt and the surrounding rock to remove coal slag; After drilling is completed, the drive unit stops operating, the fluid channel for transmitting water is closed, and the anchoring material is delivered to the gap between the anchor bolt and the surrounding rock through multiple other fluid channels for anchoring. After anchoring is completed, the drive unit operates and drives the first rotating shaft to reverse. The first rotating shaft drives the anchor rod to rotate for pre-tightening. The first rotating shaft also drives the second rotating shaft to move horizontally. The second rotating shaft drives the anchoring assembly to move horizontally away from the anchor rod to avoid it.

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