Multifunctional anchor rod support device

Abstract

This invention discloses a multifunctional anchor bolt support device, comprising: a base, a first hollow shaft, a second hollow shaft, a grouting shaft, a drive component, and a transmission assembly. The first hollow shaft is rotatably mounted on the base and sleeved around the second hollow shaft. Rotation of the first hollow shaft can drive the second hollow shaft to move along its length. The second hollow shaft is sleeved around the grouting shaft and can rotate unidirectionally relative to the grouting shaft. The grouting shaft has multiple fluid channels respectively communicating with the central through-hole of the first hollow shaft. The drive component is mounted on the base and connected to the first hollow shaft via the transmission assembly to drive its rotation. This multifunctional anchor bolt support device avoids the fluid channels rotating relative to the surrounding environment during operation, making the fluid channels suitable for conveying easily reactive and volatile fluid media.

Description

Technical Field

[0001] This invention relates to the field of mine roadway support equipment technology, and in particular to a multifunctional anchor bolt support device. Background Technology

[0002] Rock bolt support can effectively control surrounding rock deformation and has been widely used in coal mines, metal mines, and other fields. Taking coal mine roadway support as an example, the rock bolt support process is as follows: drill holes in the surrounding rock of the coal roadway using drill rods, manually insert resin anchoring agent into the drilled holes, place the rock bolts in and stir, and pre-tighten the rock bolts after the anchoring agent has cured. However, the rock bolt support construction process has the following problems: 1. After drilling, the surrounding rock is prone to collapse under mining stress. The step of manually inserting the anchoring agent into the drill hole is difficult, especially when the coal and rock mass is relatively broken or the drill hole wall is uneven. It takes a certain amount of time to complete the installation of the anchoring agent, reducing the support efficiency. 2. Drilling, installing the anchoring agent, and pre-tightening require different tools. Disassembling the drill rods and switching between different tools all take a long time to complete.

[0003] 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

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention propose a multifunctional anchor bolt support device suitable for conveying fluid materials that are easily reactive and volatile.

[0006] The multifunctional anchor bolt support device of this invention includes: a base, a first hollow shaft, a second hollow shaft, a grouting shaft, a drive component, and a transmission assembly. The first hollow shaft is rotatably connected to the base. The first hollow shaft is sleeved outside the second hollow shaft, and rotation of the first hollow shaft can drive the second hollow shaft to move along the length direction of the first hollow shaft. The second hollow shaft is sleeved outside the grouting shaft, and the second hollow shaft can rotate unidirectionally relative to the grouting shaft. The grouting shaft is provided with multiple fluid channels respectively communicating with the central through hole of the first hollow shaft. The drive component is disposed on the base, and the drive component is connected to the first hollow shaft through the transmission assembly to drive the first hollow shaft to rotate.

[0007] The multifunctional anchor bolt support device of this invention uses a drive component to drive a first hollow shaft to rotate via a transmission assembly, thereby enabling anchor bolt drilling and pre-tightening operations. Fluid medium is delivered to the anchor bolt through the fluid channel of the grouting shaft, thus achieving anchor bolt anchoring. Furthermore, the second hollow shaft drives the grouting shaft to move, preventing interference between the grouting shaft and the anchor bolt during anchoring. The second hollow shaft is also rotatable relative to the grouting shaft, 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.

[0008] Therefore, the multifunctional anchor bolt support device of this invention solves the problem in related technologies where the drill box cannot transport some volatile or easily precipitated fluids.

[0009] In some embodiments, the central through hole of the first hollow shaft 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 hollow shaft is provided with an external thread that matches the internal thread. The second hollow shaft located in the clearance section is connected to the clearance section by a thread.

[0010] In some embodiments, the grouting shaft includes a liquid dispensing section and a liquid injection section. The liquid dispensing section is slidably disposed on the base along the length direction of the first hollow shaft. The liquid injection section is columnar, with a first end connected to the liquid dispensing section. The liquid injection section passes through the central through hole of the second hollow shaft. The second hollow shaft is sleeved outside the liquid injection section, and a one-way bearing is provided between the liquid injection section and the second hollow shaft. The one-way bearing is used to restrict the unidirectional rotation of the second hollow shaft. The fluid channel is disposed on the liquid dispensing section and the liquid injection section.

[0011] In some embodiments, the injection section extends through the clearance section, and the second end of the injection section is located within the anchor bolt section.

[0012] In some embodiments, the device further includes a first limiting member and a second limiting member, which are respectively disposed in the central through hole of the second hollow shaft. The first limiting member and the second limiting member are respectively used to limit the displacement of the injection part in the length direction of the first hollow shaft.

[0013] 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 hollow shaft. The liquid dispensing part 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 grouting shaft.

[0014] 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 part.

[0015] In some embodiments, a third limiting member is further included, which is disposed on the base. The third limiting member and the liquid injection part are respectively located on both sides of the liquid dispensing part along the length direction of the first hollow 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.

[0016] In some embodiments, an anchor bolt adapter is further included, which is detachably connected to the first hollow 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 hollow shaft.

[0017] 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 is sleeved on the output shaft of the driving element, and the second gear is sleeved on the first hollow shaft. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a multifunctional anchor bolt support device according to an embodiment of the present invention.

[0019] Figure 2 This is a front view schematic diagram of the multifunctional anchor bolt support device according to an embodiment of the present invention.

[0020] Figure 3 This is a top view of the multifunctional anchor bolt support device according to an embodiment of the present invention, showing the internal and external threads fully engaged.

[0021] Figure 4 This is a cross-sectional schematic diagram of the multifunctional anchor bolt support device according to an embodiment of the present invention, showing the complete engagement of the internal and external threads.

[0022] Figure 5 This is a top view of the multifunctional anchor bolt support device according to an embodiment of the present invention when the internal and external threads are not fully engaged.

[0023] Figure 6 This is a cross-sectional schematic diagram of the multifunctional anchor bolt support device according to an embodiment of the present invention when the internal and external threads are not fully engaged.

[0024] Figure label:

[0025] Base 1, limiting slide bar 11, third limiting component 12

[0026] First hollow shaft 2, first through hole 21

[0027] Second hollow shaft 3, second through hole 31, first limiting member 32, second limiting member 33

[0028] Grouting shaft 4, liquid preparation section 41, liquid injection section 42, fluid channel 43, one-way bearing 44.

[0029] Drive component 5

[0030] Transmission assembly 6, first gear 61, second gear 62

[0031] Anchor bolt adapter 7, mounting hole 71. Detailed Implementation

[0032] 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.

[0033] The multifunctional anchor bolt support device of the present invention is described below with reference to the accompanying drawings.

[0034] like Figures 1 to 6 As shown, the multifunctional anchor bolt support device of this invention includes: a base 1, a first hollow shaft 2, a second hollow shaft 3, a grouting shaft 4, a driving component 5, and a transmission assembly 6.

[0035] The first hollow shaft 2 is rotatably connected to the base 1. The first hollow shaft 2 is sleeved outside the second hollow shaft 3, and the rotation of the first hollow shaft 2 can drive the second hollow shaft 3 to move along the length direction of the first hollow shaft 2. The second hollow shaft 3 is sleeved outside the grouting shaft 4, and the second hollow shaft 3 can rotate unidirectionally relative to the grouting shaft 4. The grouting shaft 4 is provided with multiple fluid channels 43, which are respectively connected to the central through hole of the first hollow shaft 2. The driving component 5 is provided on the base 1, and the driving component 5 is connected to the first hollow shaft 2 through the transmission assembly 6 to drive the first hollow shaft 2 to rotate.

[0036] For ease of description, the central through hole of the first hollow shaft 2 is referred to as the first through hole 21, and the central through hole of the second hollow shaft 3 is referred to as the second through hole 31. 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.

[0037] Optionally, such as Figures 1 to 6 As shown, the first hollow 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 hollow shaft 2 passes through the rotating hole and is rotatably connected to the vertical section of the base 1, and the first hollow shaft 2 rotates around its own central axis.

[0038] Understandably, the first hollow 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 Figures 1 to 6 As shown, the hollow anchor rod can be inserted into the first through hole 21 from the front side of the first hollow shaft 2.

[0039] Optionally, such as Figures 1 to 6 As shown, the second hollow shaft 3 is arranged along the front-to-back direction, and the first hollow shaft 2 is sleeved outside the second hollow shaft 3. At least a portion of the second hollow shaft 3 is movably fitted into the first through hole 21 of the first hollow shaft 2 along the front-to-back direction, and the second hollow shaft 3 is installed into the first through hole 21 from the rear side of the first hollow shaft 2. The front end of the second through hole 31 is connected to the first through hole 21.

[0040] Optionally, such as Figures 1 to 6 As shown, the grouting shaft 4 penetrates the second through hole 31 in the front-to-back direction, so that the front end of the grouting shaft 4 is located inside the first through hole 21, thereby connecting the outlet of the fluid channel 43 on the grouting shaft 4 with the first through hole 21. The inlets of the multiple fluid channels 43 on the grouting shaft 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.

[0041] 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.

[0042] Furthermore, such as Figures 1 to 6 As shown, the second hollow shaft 3 is sleeved outside the grouting shaft 4, so that the second hollow shaft 3 can drive the grouting shaft 4 to move in the same direction during its forward and backward movement. Furthermore, the second hollow shaft 3 can only rotate in one direction relative to the grouting shaft 4. For example, as... Figure 4 As shown, when the first hollow shaft 2 rotates clockwise, it drives the second hollow shaft 3 to rotate clockwise. When the first hollow shaft 2 rotates counterclockwise, the second hollow shaft 3 does not follow the first hollow shaft 2 in the counterclockwise direction. At this time, the first hollow shaft 2 is used to drive the second hollow shaft 3 to perform translational motion, thereby driving the grouting shaft 4 to perform translational motion.

[0043] For example, such as Figure 4 As shown ( Figure 4(This is a schematic diagram of the equipment during the drilling stage.) If the first hollow shaft 2 rotates clockwise to drive the anchor rod for drilling, the second hollow shaft 3 rotates clockwise relative to the grouting shaft 4, so that the fluid channel 43 does not need to rotate with the second hollow shaft 3, thus making the fluid channel 43 suitable for conveying easily reactive and volatile fluid media. After drilling and anchoring are completed, the first hollow shaft 2 reverses direction to drive the anchor rod for pre-tightening. Furthermore, during pre-tightening, the portion of the anchor rod located within the first through hole 21 will move closer to the grouting shaft 4. To avoid interference from the grouting shaft 4, the second hollow shaft 3 moves, thereby driving the grouting shaft 4 away from the anchor rod, thus ensuring the normal implementation of the pre-tightening operation.

[0044] Optionally, such as Figures 1 to 6 As 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 hollow shaft 2, so that after the driving component 5 is started, the first hollow shaft 2 is driven to rotate through the transmission effect of the transmission component 6.

[0045] 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.

[0046] Therefore, in the multifunctional anchor bolt support device of this embodiment, the driving component 5 drives the first hollow shaft 2 to rotate via the transmission assembly 6, thereby realizing the construction operations of anchor bolt drilling and pre-tightening. Fluid medium is delivered to the anchor bolt through the fluid channel 43 of the grouting shaft 4, thus achieving the anchor bolt anchoring operation. Furthermore, the second hollow shaft 3 drives the grouting shaft 4 to move, avoiding interference between the grouting shaft 4 and the anchor bolt during the anchoring process. The second hollow shaft 3 is also rotatable relative to the grouting shaft 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.

[0047] In some embodiments, such as Figures 3 to 6 As shown, the central through hole of the first hollow shaft 2 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 hollow shaft 3 is provided with an external thread that matches the internal thread. The second hollow shaft 3 located in the clearance section 212 is connected to the clearance section 212 by a thread.

[0048] Understandably, the rotation direction of the first hollow shaft 2 is the same as the drilling rotation direction. When the threads of the first hollow shaft 2 and the second hollow shaft 3 are not fully engaged, the first hollow shaft 2 drives the second hollow shaft 3 to translate relative to the base 1 towards the anchor rod. After the threads are fully engaged, the second hollow shaft 3 rotates relative to the base 1. The rotation direction of the first hollow shaft 2 is the pre-tightening rotation direction, and the second hollow shaft 3 translates relative to the base 1 away from the anchor rod.

[0049] 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 grouting shaft 4 is inserted into the first through hole 21 from the rear end of the clearance section 212.

[0050] Optionally, such as Figures 3 to 6 As shown, the external thread on the second hollow shaft 3 is located at the front end of the second hollow shaft 3. The internal thread of the first hollow shaft 2 meshes with the external thread of the second hollow shaft 3. Under the action of the threaded pair, when the first hollow shaft 2 and the second hollow shaft 3 rotate relative to each other, the second hollow shaft 3 will move relative to the first hollow shaft 2 in the front-back direction. Furthermore, the frictional force between the internal thread of the first hollow shaft 2 and the external thread of the second hollow shaft 3 is much smaller than the frictional force between the second hollow shaft 3 and the grouting shaft 4, ensuring that when the internal and external threads are not fully engaged, the first hollow shaft 2 rotates and drives the second hollow shaft 3 to move in the front-back direction, thereby driving the grouting shaft 4 to move in the front-back direction.

[0051] For example, such as Figure 3 and Figure 4 As shown, the internal thread of the first hollow shaft 2 and the external thread of the second hollow shaft 3 are fully engaged. In this state:

[0052] If the first hollow shaft 2 rotates clockwise, the second hollow shaft 3 cannot move forward relative to the first hollow shaft 2 because the internal and external threads are fully engaged. Therefore, the first hollow shaft 2 drives the second hollow shaft 3 to rotate synchronously, allowing for the drilling of anchor bolts. Furthermore, since the second hollow shaft 3 and the grouting shaft 4 can rotate relative to each other, the rotational motion of the grouting shaft 4 is avoided.

[0053] If the first hollow shaft 2 reverses, since the second hollow shaft 3 can move backward relative to the first hollow shaft 2, and the frictional force of the threads between the first hollow shaft 2 and the second hollow shaft 3 is less than the rotational frictional force between the second hollow shaft 3 and the grouting shaft 4, the first hollow shaft 2 drives the second hollow shaft 3 to move backward, thereby driving the grouting shaft 4 to move backward, so that the anchor bolt pre-tightening operation can be performed.

[0054] Therefore, the first hollow shaft 2 rotates clockwise and drives the anchor rod to perform drilling operations, and the first hollow shaft 2 rotates counterclockwise and drives the anchor rod to perform pre-tightening operations. Furthermore, when the first hollow shaft 2 rotates counterclockwise, it simultaneously drives the grouting shaft 4 to move backward, avoiding interference from the grouting shaft 4 with the pre-tightening of the anchor rod.

[0055] Similarly, such as Figure 5 and Figure 6 As shown, the internal thread of the first hollow shaft 2 and the external thread of the second hollow shaft 3 are not fully engaged. At this time, the first hollow shaft 2 rotates forward, and the first hollow shaft 2 drives the second hollow shaft 3 to move forward, thereby driving the grouting shaft 4 to move forward until the internal and external threads are fully engaged, and the grouting shaft 4 stops moving forward.

[0056] Furthermore, the distance between the anchor rod and the grouting shaft 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 transported by the grouting shaft 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 grouting shaft 4 and the anchor rod during pre-tightening.

[0057] In some embodiments, such as Figures 1 to 6 As shown, the grouting shaft 4 includes a liquid dispensing section 41 and a liquid injection section 42. The liquid dispensing section 41 is slidably disposed on the base 1 along the length direction of the first hollow shaft 2. The liquid injection section 42 is columnar, with its first end connected to the liquid dispensing section 41. The liquid injection section 42 passes through the central through hole of the second hollow shaft 3. The second hollow shaft 3 is sleeved on the liquid injection section 42, and a one-way bearing 44 is provided between the liquid injection section 42 and the second hollow shaft 3. The one-way bearing 44 is used to restrict the one-way rotation of the second hollow shaft 3. A fluid channel 43 is provided on the liquid dispensing section 41 and the liquid injection section 42.

[0058] Optionally, such as Figures 1 to 6 As shown, the liquid dispensing section 41 is cuboid in shape and is located behind the first hollow shaft 2 and the second hollow shaft 3. The rear end of the liquid injection section 42 is fixedly connected to the front end of the liquid dispensing section 41, so that when the second hollow shaft 3 moves in the front-back direction, the second hollow shaft 3 drives the liquid injection section 42 and the liquid dispensing section 41 to move together in the front-back direction.

[0059] The injection section 42 penetrates the clearance section 212 of the first through hole 21, and the second end (front end) of the injection section 42 is located inside the anchor section 211, so that the work of the grouting shaft 4 to deliver fluid medium into the anchor (that is, the anchoring work) is carried out inside the anchor section 211.

[0060] Furthermore, under the action of the one-way bearing 44, the second hollow shaft 3 can only rotate forward and not in reverse. That is, when the first hollow shaft 2 rotates in reverse, due to the restriction of the one-way bearing 44, the second hollow shaft 3 can only perform translational motion.

[0061] The fluid channel 43 includes a vertical channel on the liquid dispensing section 41 and a horizontal channel on the liquid injection section 42. The upper end of the vertical channel is the medium inlet and is located on the upper surface of the liquid dispensing section 41. The horizontal channel extends in the front-rear direction, and the lower end of the vertical channel is connected to the rear end of the horizontal channel. The front end of the horizontal channel is the medium outlet and is located on the front end surface of the liquid injection section 42.

[0062] 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 liquid injection part 42 in the length direction of the first hollow shaft 2.

[0063] Optionally, such as Figure 4 or Figure 6 As shown, the injection section 42 includes a first section, a second section, and a third section connected sequentially from front to back. The diameters of the first and third sections are smaller than the diameter of the second section. A first limiting member 32 is provided on the front side of the second section, thereby limiting the forward movement of the injection section 42. A second limiting member 33 is provided on the rear side of the second section, thereby limiting the backward movement of the injection section 42.

[0064] 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 part 42. The second through 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 second hollow shaft 3 and the liquid injection part 42.

[0065] 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 hollow shaft 2. The liquid dispensing part 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 grouting shaft 4.

[0066] Optionally, such as Figure 1 As shown, the central axis of the limiting hole is not coaxial with the central axis of the first hollow 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 part 41 can slide along the length direction of the limiting slide rod 11 and also restricts the rotation of the liquid dispensing part 41.

[0067] In some embodiments, such as Figure 1As 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 injection part 42.

[0068] 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 section 41. Furthermore, the four limiting slide rods 11 also serve to support the grouting shaft 4.

[0069] In some embodiments, such as Figure 1 As shown, it also includes a third limiting member 12, which is provided on the base 1. The third limiting member 12 and the liquid injection part 42 are respectively located on both sides of the liquid dispensing part 41 in the length direction of the first hollow 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.

[0070] Optionally, such as Figure 1 As shown, the third limiting member 12 is located on the rear side of the liquid dispensing section 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 grouting shaft 4 from dislodging from the limiting slide rod 11.

[0071] 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 hollow 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 hollow shaft 2.

[0072] Optionally, such as Figures 1 to 6 As shown, the anchor bolt adapter 7 is located at the front end of the first hollow shaft 2. Both the anchor bolt adapter 7 and the first hollow shaft 2 have corresponding screw holes, allowing for detachable connection and easy replacement.

[0073] In some embodiments, the drive component 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 hollow shaft 2.

[0074] Optionally, such as Figures 1 to 6 As shown, the driving component 5 is located to the left of the first hollow 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 hollow 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 hollow shaft 2 to rotate forward.

[0075] In summary, the multifunctional anchor bolt support device of this invention has the following motion characteristics:

[0076] Under the action of the first limiting member 32, the grouting shaft 4 can only rotate relative to the second hollow shaft 3 and cannot translate relative to the second hollow shaft 3 along its length. That is, when the second hollow shaft 3 translates relative to the surrounding environment, the second hollow shaft 3 drives the grouting shaft 4 to translate together. When the second hollow shaft 3 rotates relative to the surrounding environment, under the action of the limiting slide rod 11, the grouting shaft 4 remains stationary relative to the surrounding environment.

[0077] During the drilling stage, the first hollow shaft 2 rotates under the drive of the drive 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 hollow shaft 2 drives the second hollow shaft 3 to rotate forward together. Based on the aforementioned motion characteristics, the grouting shaft 4 does not rotate with the second hollow 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 hollow shaft 2 drives the second hollow shaft 3 to translate relative to the surrounding environment, and the grouting shaft 4 also translates relative to the surrounding environment until the threads are fully engaged. Then, the second hollow shaft 3 rotates synchronously with the first hollow shaft 2, and the grouting shaft 4 remains stationary relative to the surrounding environment. Therefore, throughout the entire drilling process, the grouting shaft 4 does not rotate relative to the surrounding environment, and will not cause violent shaking of the fluid medium being transported within it.

[0078] 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.

[0079] During the pre-tightening stage, the threads are initially fully engaged, and the first hollow shaft 2 rotates in the opposite direction. Under the action of the threaded pair, the first hollow shaft 2 drives the second hollow shaft 3 to translate relative to the surrounding environment, leaving space for the anchor bolt pre-tightening and preventing the anchor bolt from being squeezed by the grouting shaft 4 during pre-tightening. The threads gradually change from fully engaged to partially engaged until the anchor bolt pre-tightening is completed.

[0080] Therefore, the multifunctional anchor bolt support device of this invention integrates the functions of drilling, anchoring, and pre-tightening during anchor bolt construction by utilizing the drive component 5, transmission assembly 6, first hollow shaft 2, second hollow shaft 3, and grouting shaft 4. 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.

[0081] Furthermore, the first hollow 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 way for the delivery of anchoring material. When the first hollow shaft 2 rotates in another direction, it can achieve pre-tightening of the anchor rods.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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 multifunctional anchor bolt support device, characterized in that, include: Base; A first hollow shaft and a second hollow shaft, wherein the first hollow shaft is rotatably connected to the base, the first hollow shaft is sleeved outside the second hollow shaft, and the rotation of the first hollow shaft can drive the second hollow shaft to move along the length direction of the first hollow shaft; The grouting shaft includes a liquid dispensing section and a liquid injection section. The second hollow shaft is sleeved outside the grouting shaft and can rotate unidirectionally relative to the grouting shaft. The grouting shaft is provided with multiple fluid channels that are respectively connected to the central through hole of the first hollow shaft. A driving component and a transmission assembly, wherein the driving component is disposed on the base and the driving component is connected to the first hollow shaft through the transmission assembly to drive the first hollow shaft to rotate; 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 hollow shaft. The liquid dispensing part 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 grouting shaft.

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

3. The multifunctional anchor bolt support device according to claim 2, characterized in that, The liquid dispensing section is slidably disposed on the base along the length direction of the first hollow shaft. The liquid injection section is columnar, with its first end connected to the liquid dispensing section. The liquid injection section passes through the central through hole of the second hollow shaft. The second hollow shaft is sleeved outside the liquid injection section, and a one-way bearing is provided between the liquid injection section and the second hollow shaft. The one-way bearing is used to restrict the one-way rotation of the second hollow shaft. The fluid channel is disposed on the liquid dispensing section and the liquid injection section.

4. The multifunctional anchor bolt support device according to claim 3, characterized in that, The injection section extends through the avoidance section, and the second end of the injection section is located within the anchor bolt section.

5. The multifunctional 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 central through hole of the second hollow shaft. The first limiting member and the second limiting member are respectively used to limit the displacement of the liquid injection part in the length direction of the first hollow shaft.

6. The multifunctional 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 injection part.

7. The multifunctional 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 part are respectively located on both sides of the liquid dispensing part along the length direction of the first hollow 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 multifunctional 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 hollow 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 hollow shaft.

9. The multifunctional 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 driving component, and the second gear is sleeved on the first hollow shaft.

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