Drill and inject integrated hollow anchor rod device

Abstract

The application discloses a drilling and grouting integrated hollow anchor rod device, which comprises a main seat body, a drilling assembly, a moving shaft, an anchor grouting assembly and an anchor rod assembly. The drilling assembly comprises a drilling shaft and a driving piece. The drilling shaft is provided with a first central hole. The driving piece is connected with the drilling shaft. The moving shaft is movably matched in the first central hole. The moving shaft is provided with a second central hole. The anchor grouting assembly is slidably arranged on the main seat body. The anchor grouting assembly is provided with a fluid channel which is communicated with the first central hole. The anchor rod assembly comprises a pre-tightening nut and a hollow anchor rod. The pre-tightening nut is matched on the hollow anchor rod. The pre-tightening nut is rotationally matched at the first end of the first central hole. The driving piece drives the drilling shaft to rotate, so that the drilling and pre-tightening operation of the anchor rod assembly is realized, the construction efficiency is improved, and the fluid channel is prevented from rotating relative to the surrounding environment during the operation, so that the fluid channel is suitable for conveying fluid media which is easy to react and volatilize and dissipate.

Description

Technical Field

[0001] This invention relates to the field of mine roadway support engineering technology, and in particular to a drilling and injection integrated hollow anchor bolt device. Background Technology

[0002] Coal energy plays a vital role in driving industrial development and economic progress, and coal mine roadway support is a key factor restricting the safe and efficient mining of coal. Among related technologies, rock bolt support can effectively control surrounding rock deformation and is widely used in coal mines, metal mines, and other fields. The rock bolt support process is as follows: drilling holes in the surrounding rock of the coal roadway using drill rods, manually inserting resin anchoring agent into the drilled holes, placing the rock bolts in, mixing, and pre-tightening the rock bolts after the anchoring agent has cured. However, this support process suffers from low construction efficiency and poor support effect. Therefore, mines urgently need to develop a rock bolt support device that improves construction efficiency and support effect. 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 propose a drilling-integrated hollow anchor bolt device, which is suitable for conveying fluid materials that are easily reactive and easily volatile and dissipated.

[0005] The integrated drilling and injection hollow anchor bolt device of this invention includes: a main body, a drilling assembly, a moving shaft, an anchor injection assembly, and an anchor bolt assembly. The drilling assembly includes a drill shaft and a driving member. The drill shaft is rotatably mounted on the main body and has a first central hole extending along its length. The driving member is connected to the drill shaft to drive it to rotate. At least a portion of the moving shaft is fitted into the first central hole and is movable along the length of the drill shaft. The moving shaft has a second central hole extending along its length. The anchor injection assembly is slidably mounted on the main body and passes through the second central hole. The anchor injection assembly is rotatably connected to the moving shaft and has multiple fluid channels communicating with the first central hole. The anchor bolt assembly includes a preload nut and a hollow anchor bolt. The preload nut is fitted onto the hollow anchor bolt and is anti-rotatingly fitted at the first end of the first central hole. The drill shaft can drive the hollow anchor bolt to move along the extension direction of the first central hole.

[0006] The integrated drilling and injection hollow anchor bolt device of this invention uses a drive component to rotate the drill shaft, thereby achieving drilling and pre-tightening operations for the anchor bolt assembly and improving construction efficiency. Fluid medium is delivered to the anchor bolt through the fluid channel of the injection assembly, thus achieving anchoring. Furthermore, the movement of the injection assembly via a movable shaft avoids interference between the injection assembly and the hollow anchor bolt during anchoring. The movable shaft is also rotatable relative to the injection assembly, 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.

[0007] In some embodiments, the first central 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 moving shaft is provided with an external thread that matches the internal thread. The moving shaft located in the clearance section is connected to the clearance section by a thread.

[0008] 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 main body along the length direction of the drill 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 central hole. The movable shaft is rotatably connected to the liquid injection component. The fluid channel is disposed on the liquid dispensing component and the liquid injection component.

[0009] In some embodiments, the injection element extends through the clearance section, and the second end of the injection element is located within the anchor bolt section.

[0010] In some embodiments, the system further includes a first limiting member and a second limiting member, which are respectively disposed in the second central hole. The first limiting member and the second limiting member are used to limit the displacement of the injection member in the length direction of the drill shaft.

[0011] In some embodiments, a limiting slide bar is further included. The limiting slide bar is disposed on the main body, and the length direction of the limiting slide bar is consistent with the length direction of the drill 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.

[0012] 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.

[0013] In some embodiments, a third limiting member is further included, which is disposed on the main body. The third limiting member and the injection member are respectively located on both sides of the liquid distribution member in the length direction of the drill shaft. One end of the limiting slide rod is connected to the main body, and the other end of the limiting slide rod is connected to the third limiting member.

[0014] In some embodiments, an anchor bolt adapter is further included, which is detachably connected to the drill shaft. The anchor bolt adapter has a mounting hole that matches the anchor bolt assembly, and the central axis of the mounting hole is coaxial with the central axis of the first central hole.

[0015] In some embodiments, the drive includes a hydraulic motor and 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 drill shaft. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the drilling and injection integrated hollow anchor bolt device according to an embodiment of the present invention.

[0017] Figure 2 This is a front view schematic diagram of the drilling and injection integrated hollow anchor bolt device according to an embodiment of the present invention.

[0018] Figure 3 This is a top view of the drill-and-insert integrated hollow anchor bolt device according to an embodiment of the present invention, showing the complete engagement of the internal and external threads.

[0019] Figure 4 This is a cross-sectional schematic diagram of the drill-and-insert integrated hollow anchor bolt device according to an embodiment of the present invention, showing the complete engagement of the internal and external threads.

[0020] Figure 5 This is a top view of the drill-and-insert integrated hollow anchor bolt device according to an embodiment of the present invention, when the internal and external threads are not fully engaged.

[0021] Figure 6 This is a cross-sectional schematic diagram of the drill-and-insert integrated hollow anchor bolt device according to an embodiment of the present invention, when the internal and external threads are not fully engaged.

[0022] Figure 7 This is a schematic diagram of the anchor bolt assembly of the drilling and injection integrated hollow anchor bolt device according to an embodiment of the present invention.

[0023] Figure label:

[0024] Main seat 1, limiting slide rod 11, third limiting component 12

[0025] Drill spindle 2, first center hole 21

[0026] Moving shaft 3, second center hole 31, first limiting member 32, second limiting member 33

[0027] Anchoring assembly 4, liquid dispensing component 41, liquid injection component 42, fluid channel 43

[0028] Drive component 5, hydraulic motor 51, first gear 52, second gear 53,

[0029] Anchor bolt adapter 6, mounting hole 61,

[0030] 7. Anchor bolt assembly, 71. Preload nut, 72. Hollow anchor bolt, 73. Limiting block, 74. Self-aligning ball pad, 75. Tray, 76. Drill bit. Detailed Implementation

[0031] 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.

[0032] The drilling and injection integrated hollow anchor bolt device of the present invention is described below with reference to the accompanying drawings.

[0033] like Figures 1 to 7 As shown, the drilling and injection integrated hollow anchor bolt device of this invention includes: main body 1, drilling assembly, moving shaft 3, anchor injection assembly 4, and anchor bolt assembly 7.

[0034] The drilling assembly includes a drill spindle 2 and a drive member 5. The drill spindle 2 is rotatably mounted on the main body 1 and has a first central hole 21 extending along its length. The drive member 5 is connected to the drill spindle 2 to drive it to rotate. At least a portion of a movable shaft 3 fits into the first central hole 21 and is movable along the length of the drill spindle 2. The movable shaft 3 has a second central hole 31 extending along its length. An anchoring assembly 4 is slidably mounted on the main body 1 and passes through the second central hole 31. The anchoring assembly 4 is rotatably connected to the movable shaft 3 and has multiple fluid channels 43 communicating with the first central hole 21. The anchor bolt assembly 7 includes a preload nut 71 and a hollow anchor bolt 72. The preload nut 71 fits into the hollow anchor bolt 72 and is anti-rotatingly fitted at the first end of the first central hole 21. The drill spindle 2 can drive the hollow anchor bolt 72 to move along the extension direction of the first central hole 21.

[0035] Among them, such as Figure 1 As shown, the main body 1 is L-shaped and includes a horizontal section and a vertical section. The front end of the horizontal section of the main body 1 is connected to the lower end of the vertical section of the main body 1, and the interior of the vertical section of the main body 1 has a receiving cavity.

[0036] Optionally, such as Figures 1 to 6 As shown, the drill shaft 2 is arranged in the front-to-back direction, and the vertical section of the main body 1 is provided with a rotating hole extending in the front-to-back direction so that the drill shaft 2 passes through the rotating hole and is rotatably connected to the vertical section of the main body 1. The drill shaft 2 rotates around its own central axis, and the drill shaft 2 is provided with a first central hole 21 extending in the front-to-back direction.

[0037] The movable shaft 3 is arranged in the front-to-back direction, and its central axis is coaxial with the central axis of the drill shaft 2. At least a portion of the movable shaft 3 is movably fitted into the first central hole 21 of the drill shaft 2 in the front-to-back direction, and the movable shaft 3 is inserted into the first central hole 21 from the rear side of the drill shaft 2. The movable shaft 3 is provided with a second central hole 31 extending in the front-to-back direction, the central axis of the second central hole 31 is coaxial with the central axis of the first central hole 21, and the front end of the second central hole 31 is connected to the first central hole 21.

[0038] The anchoring assembly 4 extends through the second central hole 31 in the front-to-back direction, so that the front end of the anchoring assembly 4 is located inside the first central hole 21, thereby connecting the outlet of the fluid channel 43 on the anchoring assembly 4 with the first central 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.

[0039] 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 transmits water to the hollow anchor bolt 72 to clean 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 hollow anchor bolt 72 to anchor the anchor bolt and the surrounding rock together.

[0040] Furthermore, such as Figures 1 to 6 As shown, the anchoring assembly 4 is slidably mounted on the main body 1 in the front-to-back direction. The moving shaft 3 is rotatably connected to the anchoring assembly 4, so that the moving shaft 3 can drive the anchoring assembly 4 to move in the front-to-back direction during its movement. Furthermore, the moving shaft 3 can rotate relative to the anchoring assembly 4, thereby preventing the drill shaft 2 from rotating and causing the anchoring assembly 4 to rotate. This eliminates the need for the fluid channel 43 to rotate with the drill shaft 2, making the fluid channel 43 suitable for conveying easily reactive and volatile fluid media. Thus, the moving shaft 3 serves as a connecting element between the drill shaft 2 and the anchoring assembly 4.

[0041] 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 drill shaft 2 rotates clockwise to drive the anchor assembly in drilling operations, then after the anchor drilling and anchoring are completed, the drill shaft 2 rotates counterclockwise to drive the anchor assembly in pre-tightening operations. During pre-tightening, the hollow anchor 72 will move closer to the anchoring assembly 4. To avoid interference from the anchoring assembly 4, the moving shaft 3 moves, thereby moving the anchoring assembly 4 away from the hollow anchor 72, thus ensuring the normal implementation of the pre-tightening operation.

[0042] Optionally, such as Figures 1 to 7 As shown, the anchor bolt assembly includes a preload nut 71, a hollow anchor bolt 72, a limiting block 73, a self-aligning ball washer 74, a tray 75, and a drill bit 76.

[0043] The rear end of the hollow anchor rod 72 is connected to the limiting block 73. The limiting block 73 can be locked at the front end of the drill shaft 2 so that the drill shaft 2 can drive the hollow anchor rod 72 to rotate. The limiting block 73 is provided with a grouting hole that connects the central through hole of the hollow anchor rod 72 with the first central hole 21 of the drill shaft 2.

[0044] The front end of the hollow anchor rod 72 is fixedly connected to the drill bit 76. The central axis of the drill bit 76 and the central axis of the hollow anchor rod 72 are coaxially arranged. The drill bit 76 has a flow channel that communicates with the central through hole of the hollow anchor rod 72.

[0045] The preload nut 71 is connected to the hollow anchor rod 72 via a threaded pair. The self-aligning ball washer 74 and the tray 75 are both fitted onto the hollow anchor rod 72. The sequence from back to front is: preload nut 71, limit block 73, self-aligning ball washer 74, tray 75 and drill bit 76.

[0046] Understandably, when the anchor bolt assembly is drilling, the drill shaft 2 rotates clockwise, and the drill shaft 2 drives the drill bit 76 at the front end of the hollow anchor bolt 72 to drill. When the drilling reaches the specified depth or when the anchor bolt tail limit block 73 is in close contact with the pre-tightening nut 71, the pre-tightening nut 71 is in close contact with the self-aligning ball pad 74, the self-aligning ball pad 74 is in close contact with the tray 75, and the tray 75 is in close contact with the surrounding rock, the drilling is completed.

[0047] After the anchoring operation is completed, when the anchor bolt assembly is pre-tightened, the drill shaft 2 reverses. At this time, the rotation direction of the pre-tightening nut 71 is opposite to the rotation direction during the drilling process. The pre-tightening nut 71 continuously squeezes the tray 75 that is tightly attached to the surrounding rock, thereby pre-tightening the hollow anchor bolt 72. During the pre-tightening process, the hollow anchor bolt 72 moves relative to the drill shaft 2 away from the surrounding rock.

[0048] Therefore, in the drilling and injection integrated hollow anchor bolt device of this embodiment, the driving component 5 drives the drill shaft 2 to rotate, thereby realizing the construction operations of anchor bolt drilling and pre-tightening, thus improving construction efficiency. Fluid medium is delivered to the hollow anchor bolt 72 through the fluid channel 43 of the injection assembly 4, thereby realizing the anchor bolt anchoring operation. Furthermore, the moving shaft 3 drives the injection assembly 4 to move, avoiding interference between the injection assembly 4 and the hollow anchor bolt 72 during the anchoring process. The moving shaft 3 is also rotatable relative to the injection 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.

[0049] In some embodiments, such as Figures 3 to 6As shown, the first central 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 moving shaft 3 is provided with an external thread that matches the internal thread. The moving shaft 3 located in the clearance section 212 is connected to the clearance section 212 by a thread.

[0050] It is understandable that the rotation direction of drill spindle 2 is the drilling rotation direction. When the threads of drill spindle 2 and moving shaft 3 are not fully engaged, drill spindle 2 drives moving shaft 3 to translate relative to main body 1 towards the anchor rod. After the threads are fully engaged, moving shaft 3 rotates relative to main body 1. The rotation direction of drill spindle 2 is the pre-tightening rotation direction, and moving shaft 3 translates relative to main body 1 away from the anchor rod.

[0051] Optionally, such as Figures 3 to 6 As shown, the first central 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 central hole 21 from the front end of the anchor bolt section 211, and the anchoring assembly 4 is inserted into the first central hole 21 from the rear end of the clearance section 212.

[0052] Optionally, such as Figures 3 to 6 As shown, the external thread on the moving shaft 3 is located at the front end of the moving shaft 3. The internal thread of the drill shaft 2 meshes with the external thread of the moving shaft 3. Under the action of the thread pair, when the drill shaft 2 and the moving shaft 3 rotate relative to each other, the moving shaft 3 will move relative to the drill shaft 2 in the front-back direction. Furthermore, the friction between the internal thread of the drill shaft 2 and the external thread of the moving shaft 3 is much smaller than the friction between the moving shaft 3 and the anchoring assembly 4, ensuring that when the internal and external threads are not fully engaged, the drill shaft 2 rotates and drives the moving shaft 3 to move in the front-back direction, thereby driving the anchoring assembly 4 to move in the front-back direction.

[0053] For example, such as Figure 3 and Figure 4 As shown, the internal thread of drill shaft 2 and the external thread of moving shaft 3 are fully engaged. In this state:

[0054] If drill shaft 2 rotates clockwise, the moving shaft 3 cannot move forward relative to drill shaft 2 because the internal and external threads are fully engaged. Therefore, drill shaft 2 drives moving shaft 3 to rotate synchronously, allowing for the drilling of anchor bolts. Furthermore, since moving shaft 3 is rotatably connected to anchoring assembly 4, rotational movement of anchoring assembly 4 is avoided.

[0055] If the drill shaft 2 reverses, since the movable shaft 3 can move backward relative to the drill shaft 2, and the frictional force of the thread between the drill shaft 2 and the movable shaft 3 is less than the rotational frictional force between the movable shaft 3 and the anchoring assembly 4, the drill shaft 2 drives the movable 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.

[0056] Therefore, drill shaft 2 rotates forward and drives the anchor rod to perform drilling operations, and drill shaft 2 rotates in reverse and drives the anchor rod to perform pre-tightening operations. In addition, when drill shaft 2 rotates in reverse, it also drives the anchor injection assembly 4 to move backward, so as to avoid interference between the anchor injection assembly 4 and the pre-tightening of the anchor rod.

[0057] Similarly, such as Figure 5 and Figure 6 As shown, the internal thread of the drill shaft 2 and the external thread of the moving shaft 3 are not fully engaged. At this time, the drill shaft 2 rotates forward and drives the moving 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.

[0058] Furthermore, the distance between the anchor rod and the anchoring assembly 4 within the first central 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 central 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.

[0059] 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 main body 1 along the length direction of the drill 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 central hole 31. The movable 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.

[0060] Optionally, such as Figures 1 to 6 As shown, the liquid dispensing component 41 is cuboid in shape and is located behind the drill shaft 2 and the moving 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 moving shaft 3 moves in the front-back direction, the moving shaft 3 drives the liquid injection component 42 and the liquid dispensing component 41 to move together in the front-back direction.

[0061] Furthermore, such as Figures 1 to 6 As shown, the injection component 42 passes through the clearance section 212 of the first central 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.

[0062] 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.

[0063] 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 central 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 drill shaft 2.

[0064] Optionally, such as Figure 4 or Figure 6 As 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.

[0065] 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 central hole 31 has a step and a protrusion for securing the first limiting member 32 and the second limiting member 33, thereby realizing a rotatable connection between the moving shaft 3 and the liquid injection member 42.

[0066] In some embodiments, such as Figure 1 As shown, it also includes a limiting slide rod 11, which is provided on the main body 1. The length direction of the limiting slide rod 11 is consistent with the length direction of the drill shaft 2. The liquid distribution 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.

[0067] Optionally, such as Figure 1 As shown, the central axis of the limiting hole is not coaxial with the central axis of the drill shaft 2. The limiting slide rod 11 is set 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.

[0068] 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.

[0069] 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.

[0070] In some embodiments, such as Figure 1 As shown, it also includes a third limiting member 12, which is provided on the main body 1. The third limiting member 12 and the liquid injection member 42 are located on both sides of the liquid distribution member 41 in the length direction of the drill shaft 2, respectively. One end of the limiting slide rod 11 is connected to the main body 1, and the other end of the limiting slide rod 11 is connected to the third limiting member 12.

[0071] Optionally, such as Figure 1 As 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 main seat 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 dislodging from the limiting slide rod 11.

[0072] In some embodiments, such as Figures 1 to 6 As shown, it also includes an anchor bolt adapter 6, which is detachably connected to the drill shaft 2. The anchor bolt adapter 6 is provided with a mounting hole 61 that matches the anchor bolt assembly. The central axis of the mounting hole 61 is coaxial with the central axis of the first central hole 21.

[0073] Optionally, such as Figures 1 to 6 As shown, the anchor bolt adapter 6 is located at the front end of the drill shaft 2. Both the anchor bolt adapter 6 and the drill shaft 2 have corresponding screw holes, allowing them to be detachably connected for easy replacement.

[0074] In some embodiments, the drive member 5 includes a hydraulic motor 51 and a first gear 52 and a second gear 53 meshing with each other. The first gear 52 is sleeved on the output shaft of the hydraulic motor 51, and the second gear 53 is sleeved on the drill shaft 2.

[0075] Optionally, such as Figures 1 to 6 As shown, the hydraulic motor 51 is located on the left side of the drill shaft 2, and the first gear 52 and the second gear 53 are both located in the receiving cavity of the vertical section of the main body 1. It can be understood that when the output shaft of the hydraulic motor 51 rotates forward, it drives the first gear 52 to rotate forward, thereby driving the second gear 53 to rotate in reverse, and thus driving the drill shaft 2 to rotate in reverse. Similarly, when the output shaft of the hydraulic motor 51 rotates in reverse, it drives the first gear 52 to rotate in reverse, thereby driving the second gear 53 to rotate forward, and thus driving the drill shaft 2 to rotate forward.

[0076] In summary, the drilling-integrated hollow anchor bolt device of this invention has the following motion characteristics:

[0077] Under the action of the first limiting member 32, the anchoring assembly 4 can only rotate relative to the moving shaft 3 and cannot translate relative to the moving shaft 3 in the length direction of the moving shaft 3. That is, when the moving shaft 3 translates relative to the surrounding environment, the moving shaft 3 drives the anchoring assembly 4 to translate together. When the moving shaft 3 rotates relative to the surrounding environment, under the action of the limiting slide bar 11, the anchoring assembly 4 remains stationary relative to the surrounding environment.

[0078] During the drilling stage, the drive component 5 drives the drill shaft 2 to rotate, thereby driving the anchor bolt adapter 7 to transmit power to the anchor bolt assembly for drilling. During this process, the internal and external threads are fully engaged, and the drill shaft 2 drives the moving shaft 3 to rotate forward. Based on the aforementioned motion characteristics, the anchoring assembly 4 does not rotate with the moving 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 drill shaft 2 drives the moving 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 moving shaft 3 rotates synchronously with the drill 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.

[0079] During the anchoring stage, an external medium source is delivered to the space between the hollow anchor rod 72 and the surrounding rock through the fluid channel 43, thereby anchoring the hollow anchor rod 72 to the surrounding rock.

[0080] During the pre-tightening stage, the threads are initially fully engaged, and the drill shaft 2 rotates in the opposite direction. Under the action of the thread pair, the drill shaft 2 drives the moving shaft 3 to translate relative to the surrounding environment, leaving space for the pre-tightening of the hollow anchor rod 72 and preventing the hollow anchor rod 72 from squeezing the anchoring assembly 4 during pre-tightening. The threads gradually change from fully engaged to partially engaged until the pre-tightening of the hollow anchor rod 72 is completed.

[0081] Therefore, the integrated drilling and injection hollow anchor bolt device of this invention comprehensively realizes the functions of drilling, anchoring, and pre-tightening during anchor bolt construction by utilizing the driving component 5, drill shaft 2, moving shaft 3, anchor injection assembly 4, and anchor bolt assembly. During drilling, the fluid channel 43 does not require rotation. 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 require rotational movement with the power output components, making it suitable for transporting easily reactive and volatile fluid media.

[0082] Furthermore, driven by the drive component 5, the drill shaft 2 rotates in one direction, which can drive the hollow anchor rod 72 to perform drilling operations, and the fluid channel 43 provides a way for the delivery of anchoring material. When the drill shaft 2 rotates in another direction, the hollow anchor rod 72 can be pre-tightened.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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 hollow anchor bolt device with integrated drilling and injection, characterized in that, include: Main body; A drilling assembly, comprising a drill spindle and a drive member, wherein the drill spindle is rotatably mounted on the main body and has a first central hole extending along the length direction of the drill spindle, and the drive member is connected to the drill spindle to drive the drill spindle to rotate; A movable shaft, at least a portion of which is fitted into the first central hole, the movable shaft being movable along the length direction of the drill shaft, and the movable shaft having a second central hole extending along the length direction of the movable shaft; An anchoring assembly is slidably mounted on the main body, the anchoring assembly passes through the second central hole, the anchoring assembly is rotatably connected to the moving shaft, and the anchoring assembly is provided with multiple fluid channels respectively communicating with the first central hole; An anchor bolt assembly, the anchor bolt assembly including a preload nut and a hollow anchor bolt, the preload nut being fitted onto the hollow anchor bolt, the preload nut being anti-rotatingly fitted onto the first end of the first central hole, and the drill shaft being able to drive the hollow anchor bolt to move along the extension direction of the first central hole; The first central 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 moving shaft is provided with an external thread that matches the internal thread. The moving shaft located in the clearance section is connected to the clearance section by a thread. The anchor injection assembly includes a liquid dispensing component and a liquid injection component. The liquid dispensing component is slidably disposed on the main body along the length direction of the drill 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 central hole. The movable shaft is rotatably connected to the liquid injection component. The fluid channel is disposed on the liquid dispensing component and the liquid injection component. The injection component penetrates the clearance section, and the second end of the injection component is located within the anchor bolt section.

2. The integrated drilling and injection hollow anchor bolt device according to claim 1, characterized in that, It also includes a first limiting member and a second limiting member, which are respectively disposed in the second central hole. The first limiting member and the second limiting member are used to limit the displacement of the injection member in the length direction of the drill shaft.

3. The drilling-integrated hollow anchor bolt device according to claim 2, characterized in that, It also includes a limiting slide rod, which is provided on the main body. The length direction of the limiting slide rod is consistent with the length direction of the drill shaft. The liquid distribution 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 anchor injection assembly.

4. The drilling-integrated hollow anchor bolt device according to claim 3, 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.

5. The drilling-integrated hollow anchor bolt device according to claim 4, characterized in that, It also includes a third limiting member, which is disposed on the main body. The third limiting member and the liquid injection member are respectively located on both sides of the liquid distribution member in the length direction of the drill shaft. One end of the limiting slide rod is connected to the main body, and the other end of the limiting slide rod is connected to the third limiting member.

6. The integrated drilling and injection hollow anchor bolt device according to claim 1, characterized in that, It also includes an anchor bolt adapter, which is detachably connected to the drill shaft. The anchor bolt adapter has a mounting hole that matches the anchor bolt assembly, and the central axis of the mounting hole is coaxial with the central axis of the first central hole.

7. The integrated drilling and injection hollow anchor bolt device according to claim 1, characterized in that, The driving component includes a hydraulic motor and 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 drill shaft.

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