Accurate preparation device and method for energy-absorbing anchoring body structure

Abstract

The invention relates to the technical field of rock mechanics test sample preparation, and particularly discloses an energy-absorbing anchoring body structure precise preparation device and a preparation method thereof.The energy-absorbing anchoring body structure precise preparation device comprises a frame body, a first motor is fixedly installed on the surface of the frame body, a transmission box is installed at the output end of the first motor, and the transmission box is installed on the surface of the frame body; a transmission case is installed on the frame body, a three-jaw chuck is installed on the end face of the transmission case, a sleeve is installed on the end face of the three-jaw chuck, and the clamping mechanism comprises two fixed rails fixedly connected to the two sides of the inner wall of the frame body respectively. A round pipe is arranged on the anchor rod mold, and in the downward moving process of the anchor rod mold, the round pipe is in extrusion fit with two baffles below the round pipe, so that transmission of a gear and a gear block is achieved, the effect that two first arc-shaped plates are combined together is achieved, and along with continuous downward moving of the anchor rod mold, the anchor rod mold can be fixed. And the circular pipe is matched with the connecting rod through a spiral groove of the circular pipe, so that the first arc-shaped plate rotates.

Description

Technical Field

[0001] The present invention belongs to the technical field of rock mechanics test sample preparation, and in particular relates to a precise preparation device for an energy-absorbing anchor structure and a preparation method thereof. Background Art

[0002] Bolting has been widely used in coal mine tunnels in my country due to its exceptional safety and reliability, ease of operation, and significant economic rationality. The fundamental principle of anchoring technology is to use the bonding force provided by the anchoring agent to bond the anchor bolt to the reinforced rock and soil into a load-bearing combination, thereby improving the stability of the reinforced body.

[0003] Many scholars have prepared anchor body samples in the laboratory and studied the distribution laws of anchor (cable) axial force, shear stress and anchoring force under different constraint conditions based on the interaction between anchor rod, anchoring agent and surrounding rock.

[0004] The current mainstream anchor specimen preparation process still follows the traditional technical path. Its standard operating process is as follows: first, the specimen is cast in a mold, then an anchor hole structure is reserved at the center of the specimen. After a standard curing cycle, the specimen is manually demoulded and the anchor specimen is prepared. However, the existing operation method requires manual positioning of the anchor rod by screwing multiple bolts after inserting the anchor rod into the reserved anchor hole. This makes it difficult to achieve precise concentric positioning of the anchor rod and the anchor hole. The positioning accuracy is insufficient, which easily affects the accuracy of the experimental data. Summary of the Invention

[0005] The purpose of the present invention is to provide a precise preparation device for an energy-absorbing anchor structure and a preparation method thereof, so as to solve the problem in the prior art that the existing operation method is difficult to achieve precise concentric positioning of the anchor rod and the anchor hole.

[0006] To achieve the above object, the present invention provides the following technical solutions: A device for accurately preparing an energy-absorbing anchor structure comprises a frame, a first motor is fixedly mounted on the surface of the frame, a transmission box is mounted on the output end of the first motor, the transmission box is mounted on the surface of the frame, a three-jaw chuck is mounted on the end face of the transmission box, a sleeve is mounted on the end face of the three-jaw chuck, an anchor rod mold is provided above the sleeve, and further comprises: The clamping mechanism comprises two fixed rails respectively fixedly connected to both sides of the inner wall of the frame, the inner walls of the two fixed rails are slidably connected with slides, the ends of the two slides close to each other are fixedly connected to the arc track, the inner walls of the two arc tracks are slidably connected with a first arc plate, two baffles are provided above the sleeve, the ends of the two baffles away from each other are fixedly connected to a magnet plate, a gear is provided above the magnet plate, a plurality of tooth blocks are fixedly connected to the bottom surface of the slide, the gear is located below the slide, and the arc surface of the anchor rod mold is fixedly connected to a round tube; The positioning mechanism includes two second arc plates located between two first arc plates, the inner arc surfaces of the two first arc plates are provided with two limit grooves, the arc surfaces of the two second arc plates are slidingly connected to the two positioning plates, the surface of the first arc plates is provided with a connecting rod, and the arc surface of the circular tube is provided with multiple spiral grooves that cooperate with the connecting rod.

[0007] Preferably: one end of the first arc-shaped plate is fixedly connected to a block, the other end of the first arc-shaped plate is provided with a slot adapted to the block, the surface of the fixed track is fixedly connected to a fixed plate, the surface of the fixed plate is rotatably connected to a rotating rod, the arc surface of the rotating rod is fixedly connected to a connecting plate, the magnet plate is fixedly connected to the bottom surface of the connecting plate, and the gear is fixedly connected to the arc surface of the rotating rod.

[0008] Preferably, a connecting piece is provided on the bottom surface of the arc track, and both ends of the connecting piece are fixedly connected to the arc track and the second arc plate respectively. The arc surface of the second arc plate is provided with two sliding grooves, and the positioning plate is slidably connected inside the sliding grooves.

[0009] Preferably, the bottom surface of the positioning plate is fixedly connected to a first block, the surface of the first block is fixedly connected to a first spring, the other end of the first spring is fixedly connected to a second block, and the second block is fixedly connected to the inner bottom wall of the slide groove.

[0010] Preferably: a square groove is provided on the inner arc surface of the first arc-shaped plate, a rectangular block is slidingly provided inside the square groove, the connecting rod is fixedly connected to the surface of the rectangular block, three second springs are fixedly connected to the surface of the rectangular block, the three second springs are all fixedly connected to the inner wall of the square groove, and the size of the rectangular block is smaller than that of the square groove.

[0011] Preferably, a groove is provided on the surface of the connecting piece, and the connecting rod passes through the connecting piece via the groove, and one end of the connecting rod away from the rectangular block is fixedly connected to the connecting block.

[0012] Preferably: the surface of the frame is also provided with a lift, the output end of the lift is fixedly connected to a mounting plate, the end face of the mounting plate is installed with a first clamping plate, a second clamping plate is provided on one side of the first clamping plate, the anchor rod mold is located between the first clamping plate and the second clamping plate, the surface of the first clamping plate is threadedly connected to two screws, and the arc surface of the anchor rod mold is threadedly connected to a nut.

[0013] A precise preparation method for energy-absorbing anchor solid structure, S1. Put a layer of polyethylene foam hollow thin tube with the same inner diameter as the outer diameter of the anchor rod mold on the surface of the anchor rod mold and fix it firmly with structural adhesive, etc., and evenly apply a layer of water-based mold release agent on the surface of the polyethylene foam hollow thin tube. The whole tube is used as a mold and inserted into the sleeve for concrete pouring; S2. After the standard curing cycle, ensure that the concrete strength meets the requirements. Before demoulding, check whether the demoulding template surface is flat and smooth, and conduct a trial demoulding to check whether the coating of the release agent and the condition of the concrete surface meet the requirements; S3. When demoulding, remove the anchor rod mold and the polyethylene foam hollow thin tube together. Tools (such as hydraulic tools) can be used to assist in demoulding. After demoulding, if some polyethylene foam is adhered to the concrete, physical methods (such as a knife) can be used to pry the foam to separate it from the concrete. S4. After demoulding, check the surface quality of the concrete. If there are any defects, repair them in time. At the same time, clean and smooth the mold surface. If there are any damages or burrs, repair them in time to prepare for the next use.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a round tube on the anchor rod mold. When the anchor rod mold moves downward, the round tube is squeezed and matched with the two baffles below, thereby realizing the transmission of the gear and the tooth block, achieving the effect of merging the two first arc plates together, and surrounding the anchor rod mold. As the anchor rod mold continues to move downward, the round tube will cooperate with the connecting rod through its own spiral groove, so that the first arc plate rotates, squeezing the multiple positioning plates. The multiple positioning plates move toward the center at the same time, squeezing the anchor rod mold, achieving the effect of positioning the center of the anchor rod mold, so that the center of the anchor rod mold is consistent with the center of the sleeve. That is, when the anchor rod mold moves downward, the round tube first cooperates with the baffle to merge the first curved plate together to surround the anchor rod mold. Afterwards, the round tube cooperates with the connecting rod to rotate the first curved plate, achieving the effect of automatic center positioning and making operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of part of the structure; Figure 3 Schematic diagram of the top view of the clamping mechanism and the positioning mechanism of the present invention; Figure 4 For the present invention Figure 2 Schematic diagram of the partially split structure; Figure 5 It is a partial structural schematic diagram of the clamping mechanism of the present invention; Figure 6 For the present invention Figure 4 Schematic diagram of the partially split structure; Figure 7 This is a schematic diagram of the planar structure after the two first curved plates of the present invention are combined; Figure 8 Schematic diagram of the planar structure of the second curved plate of the present invention; Figure 9 Schematic diagram of the planar structure of the positioning plate of the present invention; Figure 10 It is a partial structural schematic diagram of the anchor rod mold and the round tube of the present invention; Figure 11 For the present invention Figure 6 Schematic diagram of the structure at A in the middle; Figure 12 For the present invention Figure 1 Schematic diagram of the partially disassembled structure of the middle elevator.

[0016] In the figure: 1, frame; 101, anchor rod mold; 102, first motor; 103, transmission box; 104, three-jaw chuck; 105, sleeve; 2. Clamping mechanism; 201. Fixed track; 202. Slide plate; 203. Curved track; 204. First curved plate; 205. Clamping block; 206. Clamping slot; 207. Fixed plate; 208. Rotating rod; 209. Connecting plate; 210. Magnet plate; 211. Baffle; 212. Gear; 213. Gear block; 216. Round tube; 3. Positioning mechanism; 301. Connecting member; 302. Second curved plate; 303. Slide; 304. Positioning plate; 305. First block; 306. First spring; 307. Second block; 308. Limiting groove; 309. Square groove; 310. Rectangular block; 311. Second spring; 312. Connecting rod; 313. Connecting block; 314. Groove; 315. Spiral groove; 4. Elevator; 401. Mounting plate; 402. First clamping plate; 403. Second clamping plate; 404. Screw; 405. Nut. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Reference Figures 1-12 As shown, the present invention provides a precise preparation device for an energy-absorbing anchor structure, comprising a frame 1, a first motor 102 fixedly mounted on the surface of the frame 1, a transmission box 103 mounted on the output end of the first motor 102, the transmission box 103 mounted on the surface of the frame 1, a three-jaw chuck 104 mounted on the end surface of the transmission box 103, a sleeve 105 mounted on the end surface of the three-jaw chuck 104, an anchor rod mold 101 disposed above the sleeve 105; In this embodiment, the first motor 102 and the transmission box 103 are existing technologies, wherein a transmission assembly is provided inside the transmission box 103 and is connected to the output end of the first motor 102 and the bottom of the three-jaw chuck 104, so that the first motor 102 can drive the three-jaw chuck 104 to rotate after it is started, wherein the three-jaw chuck 104 is existing technology and plays the role of clamping the sleeve 105. The above is a technology well known to those skilled in the art and will not be elaborated here.

[0019] The clamping mechanism 2 includes two fixed rails 201 respectively fixedly connected to the inner walls of the frame 1 on both sides, the inner walls of the two fixed rails 201 are slidably connected with slides 202, the ends of the two slides 202 close to each other are fixedly connected with arc-shaped rails 203, the inner walls of the two arc-shaped rails 203 are slidably connected with a first arc plate 204, two baffles 211 are provided above the sleeve 105, the ends of the two baffles 211 away from each other are fixedly connected with a magnet plate 210, a gear 212 is provided above the magnet plate 210, a bottom surface of the slide 202 is fixedly connected with a plurality of tooth blocks 213, the gear 212 is located below the slide 202, and the arc surface of the anchor rod mold 101 is fixedly connected with a round tube 216; In this embodiment, the shape of the internal groove of the fixed rail 201 is an inverted convex shape, so that the tooth block 213 can move. The distance between the two baffles 211 is greater than the diameter of the anchor rod mold 101 and smaller than the diameter of the round tube 216, so that when the anchor rod mold 101 moves downward, it can pass through first and then be squeezed to the baffle 211 through the round tube 216, thereby facilitating the movement of the anchor rod mold 101 to the bottom of the sleeve 105.

[0020] In an optional embodiment: one end of the first curved plate 204 is fixedly connected to a block 205, the other end of the first curved plate 204 is provided with a slot 206 adapted to the block 205, the surface of the fixed rail 201 is fixedly connected to a fixed plate 207, the surface of the fixed plate 207 is rotatably connected to a rotating rod 208, the arc surface of the rotating rod 208 is fixedly connected to a connecting plate 209, the magnet plate 210 is fixedly connected to the bottom surface of the connecting plate 209, and the gear 212 is fixedly connected to the arc surface of the rotating rod 208.

[0021] It should be noted that the two first curved plates 204 will eventually be engaged with each other with the help of the blocks 205 and the slots 206 on each other to form a complete circle. The merged two first curved plates 204 can rotate in the two curved tracks 203. After the magnet plate 210 is separated from the connector 301, it will swing under the action of gravity. At this time, the rotating rod 208 will drive the gear 212 to rotate, and the gear 212 transmits multiple tooth blocks 213, so that the two slides 202 slide out from the inside of the fixed track 201. The two first curved plates 204 will eventually be engaged with each other with the help of the blocks 205 and the slots 206 on each other. It should be noted that when the baffle 211 swings to the lowest point under its own gravity, the gear 212 is still engaged with the tooth block 213.

[0022] In an optional embodiment: a positioning mechanism 3, the positioning mechanism 3 includes two second arc plates 302 located between the two first arc plates 204, the inner arc surfaces of the two first arc plates 204 are each provided with two limit grooves 308, the arc surfaces of the two second arc plates 302 are each slidingly connected to the two positioning plates 304, a connecting rod 312 is provided on the surface of the first arc plate 204, and a plurality of spiral grooves 315 that cooperate with the connecting rod 312 are provided on the arc surface of the circular tube 216, and the plurality of spiral grooves 315 serve to ensure that the connecting rod 312 can be inserted into one of the spiral grooves 315 when moving.

[0023] A connecting piece 301 is provided on the bottom surface of the arc track 203, and the two ends of the connecting piece 301 are fixedly connected to the arc track 203 and the second arc plate 302 respectively. The arc surface of the second arc plate 302 is provided with two slide grooves 303, and the positioning plate 304 is slidably connected to the inside of the slide groove 303. The bottom surface of the positioning plate 304 is fixedly connected to the first block 305, and the surface of the first block 305 is fixedly connected to the first spring 306. The other end of the first spring 306 is fixedly connected to the second block 307, and the second block 307 is fixedly connected to the inner bottom wall of the slide groove 303.

[0024] It should be noted that the connecting member 301 is made of iron material and is initially attracted to the magnet plate 210 . The cross-section of the slide groove 303 is an inverted convex shape, and the first spring 306 facilitates the rebound of the positioning plate 304 .

[0025] In an optional embodiment: a square groove 309 is provided on the inner arc surface of the first arc-shaped plate 204, a rectangular block 310 is slidingly provided inside the square groove 309, a connecting rod 312 is fixedly connected to the surface of the rectangular block 310, three second springs 311 are fixedly connected to the surface of the rectangular block 310, the three second springs 311 are all fixedly connected to the inner wall of the square groove 309, the size of the rectangular block 310 is smaller than the size of the square groove 309, a groove 314 is provided on the surface of the connecting member 301, the connecting rod 312 passes through the connecting member 301 with the help of the groove 314, and the end of the connecting rod 312 away from the rectangular block 310 is fixedly connected to the connecting block 313, and the connecting block 313 is hemispherical in shape so that it can slide when squeezed.

[0026] It should be noted that the height of the rectangular block 310 is consistent with the height of the square groove 309, limiting the rectangular block 310 to only move horizontally inside the square groove 309. When the circular tube 216 is squeezed to the center position by the positioning plate 304, the position of the circular tube 216 changes, and the position of the connecting rod 312 changes. The connecting rod 312 drives the rectangular block 310 to move inside the square groove 309, and the second spring 311 is squeezed and deformed. The second spring 311 plays a role in firmly fixing the rectangular block 310 inside the square groove 309, so that the rectangular block 310 will not fall out of the square groove 309. Since the spiral groove 315 has a certain depth, the connecting rod 312 is not easy to slide out of the spiral groove 315. When the two first curved plates 204 are merged together, the connecting rod 312 will contact the arc surface of the circular tube 216, and one of the second springs 311 will be in a compressed state. At this time, two situations will occur. First, as the circular tube 216 continues to move downward, the connecting rod 312 will be aligned with one of the spiral grooves 315, and the compressed second spring 311 will rebound, causing the connecting rod 312 to drive the connecting block 313 to slide into one of the spiral grooves 315. As the circular tube 216 moves downward, the connecting rod 312 slides along the inner wall of the spiral groove 315, so that the two merged plates 204 are connected. In the second case, the connecting rod 312 is between two adjacent spiral grooves 315. Since the spiral groove 315 is spiral, as the circular tube 216 continues to move downward, when the connecting block 313 is at the position of the spiral groove 315, the compressed second spring 311 rebounds, and the connecting rod 312 drives the connecting block 313 to slide into one of the spiral grooves 315. As the circular tube 216 moves downward, the connecting rod 312 slides along the inner wall of the spiral groove 315, causing the two merged first curved plates 204 to rotate.

[0027] In an optional embodiment, the frame 1 is further provided with an elevator 4, the output end of the elevator 4 is fixedly connected to a mounting plate 401, a first clamping plate 402 is installed on the end surface of the mounting plate 401, a second clamping plate 403 is provided on one side of the first clamping plate 402, the anchor rod mold 101 is located between the first clamping plate 402 and the second clamping plate 403, two screws 404 are threadedly connected to the surface of the first clamping plate 402, and a nut 405 is threadedly connected to the arc surface of the anchor rod mold 101; Screw holes are provided on the second clamping plate 403 at positions corresponding to the two screws 404. By placing the anchor rod mold 101 between the first clamping plate 402 and the second clamping plate 403, and screwing the two screws 404, the two screws 404 are made to enter the two corresponding screw holes on the second clamping plate 403 to clamp the anchor rod mold 101. Then, the nut 405 is installed on the anchor rod mold 101 to further improve the stability of the anchor rod mold 101.

[0028] In this embodiment, the elevator 4 is an existing technology, which is composed of transmission components such as a motor and a telescopic rod. It is a technology well known to those skilled in the art and will not be described in detail here. After the first clamping plate 402 and the second clamping plate 403 complete the clamping of the anchor rod mold 101, the center position of the clamped anchor rod mold 101 is basically concentric with the lower sleeve 105.

[0029] In summary, during the downward movement of the anchor rod mold 101, the circular tube 216 first cooperates with the baffle 211 to merge the first arc plate 204 together to surround the anchor rod mold 101. Afterwards, the circular tube 216 cooperates with the connecting rod 312 to rotate the first arc plate 204, thereby achieving the effect of automatic center positioning and making operation more convenient.

[0030] The working principle of the present invention is as follows: when in use, since the anchor rod mold 101 is too long, when the anchor rod mold 101 moves downward, the lower end of the anchor rod mold 101 is prone to a small swing, causing the bottom end of the anchor rod mold 101 and the center of the sleeve 105 to be not in a concentric position; First, a layer of polyethylene foam hollow thin tube with the same inner diameter as the outer diameter of the anchor rod mold 101 is put on the surface of the anchor rod mold 101 and fixed firmly with structural glue, etc. Then, the round tube 216 is fixed to the appropriate position on the outer surface of the polyethylene foam hollow thin tube with glue, and a layer of water-based mold release agent is evenly applied on the surface of the polyethylene foam hollow thin tube and the surface of the round tube 216. The whole is used as a mold and inserted into the sleeve 105 for pouring concrete; Then, the anchor mold 101 is placed between the first clamping plate 402 and the second clamping plate 403, and the two screws 404 are screwed into the two corresponding screw holes on the second clamping plate 403 to clamp the anchor mold 101. Then, the nut 405 is installed on the anchor mold 101 to further improve the stability of the anchor mold 101. At this time, it should be noted that the bottom end of the anchor mold 101 needs to be located between the two baffles 211. Then, the elevator 4 is started by the external power controller to drive the anchor mold 101 to move downward. The bottom end of the anchor mold 101 will pass through between the two baffles 211. As the anchor mold 101 moves downward, the round tube 216 will be squeezed onto the two baffles 211. The baffles 211 are squeezed and moved upward. When the baffle 211 is swung down, the magnet plate 210 will be separated from the adsorption of the connecting piece 301, and under the weight of the baffle 211 itself, the baffle 211 and the magnet plate 210 will continue to swing downward and break away from the contact with the round tube 216. When the magnet plate 210 swings, the rotating rod 208 will drive the gear 212 to rotate, and the gear 212 transmits the multiple tooth blocks 213, so that the two slides 202 slide out from the inside of the fixed track 201, and the two first curved plates 204 will eventually be engaged with each other with the help of the blocking blocks 205 and the card slots 206 on each other. It should be noted that when the baffle 211 swings to the lowest point under its own weight, the gear 212 is still engaged with the tooth block 213. During this process, the connecting rod 312 will move with the movement of the first curved plate 204. At this time The connecting rod 312 will contact the arc surface of the circular tube 216, and one of the second springs 311 will be in a compressed state. At this time, two situations will occur. First, as the circular tube 216 continues to move downward, the connecting rod 312 will be aligned with one of the spiral grooves 315, and the compressed second spring 311 will rebound, so that the connecting rod 312 drives the connecting block 313 to slide into one of the spiral grooves 315, and as the circular tube 216 moves downward, the connecting rod 312 slides along the inner wall of the spiral groove 315, so that the two merged first arc plates 204 rotate. In the second situation, the connecting rod 312 is between two adjacent spiral grooves 315. Since the spiral groove 315 is spiral, as the circular tube 216 continues to move downward, when the connecting block 313 is in the spiral groove 315 When the first spring 306 is in the position of the first spring 311, the compressed second spring 311 rebounds, and the connecting rod 312 drives the connecting block 313 to slide into one of the spiral grooves 315. As the circular tube 216 moves downward, the connecting rod 312 slides along the inner wall of the spiral groove 315, causing the two merged first arc plates 204 to rotate. Under the action of the limiting groove 308, the inner wall of the limiting groove 308 will squeeze the positioning plate 304, and the four positioning plates 304 will extend at the same time. At this time, the first spring 306 is in a deformed state, and the positioning plate 304 will squeeze the circular tube 216, causing the circular tube 216 to displace and move to the center position, so as to achieve the effect of positioning the bottom of the anchor mold 101 at the center of the sleeve 105. Since the circular tube 216 and the anchor mold 101 are integrated,The connecting rod 312 is located inside the spiral groove 315. When the position of the circular tube 216 changes, the position of the connecting rod 312 will change accordingly. The connecting rod 312 will drive the rectangular block 310 to move inside the square groove 309. The second spring 311 will be squeezed and deformed. The second spring 311 plays a role in firmly fixing the rectangular block 310 inside the square groove 309, so that the rectangular block 310 will not fall out of the square groove 309. Then, concrete can be poured into the sleeve 105. After the standard curing cycle, ensure that the concrete strength meets the requirements. Before demolding, first check whether the surface of the demolding template is flat and smooth, and conduct a trial demolding to check whether the coating of the release agent and the state of the concrete surface meet the requirements. When demolding, pull the magnet plate 210. At this time, the rotating rod 208 drives the gear 212 to rotate in the opposite direction, and transmits the tooth block 213, so that the two first arc plates 204 are separated from each other to facilitate demolding. Then, the anchor rod mold 101 and the polyethylene foam hollow thin tube are taken out together. Tools such as hydraulic tools can be used to assist in demolding. After demolding, if some polyethylene foam is adhered to the concrete, physical methods such as a knife can be used to pry the foam to separate it from the concrete. After demolding is completed, check the surface quality of the concrete. If there are any defects, repair them in time. At the same time, clean and smooth the mold surface. If there are any damage or burrs, they should be repaired in time to prepare for the next use. Then take out the anchor rod mold 101, place the anchor rod between the first clamping plate 402 and the second clamping plate 403, and tighten it. Then insert the anchor rod into the center position of the anchor hole reserved in the sleeve 105 according to the above steps, and fill the sleeve 105 with anchoring agent. Start the first motor 102 through the external power controller, and drive the sleeve 105 through the transmission box 103 to make the three-jaw chuck 104 drive the sleeve 105 to rotate. Control the three-jaw chuck 104 to rotate at a low speed, and control the elevator 4 to drive the anchor rod to slowly descend to the bottom of the sleeve 105. The preparation of the anchor solid sample is completed.

[0031] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A precise preparation device for an energy-absorbing anchor structure, comprising a frame (1), a first motor (102) fixedly mounted on the surface of the frame (1), a transmission box (103) mounted on the output end of the first motor (102), the transmission box (103) mounted on the surface of the frame (1), a three-jaw chuck (104) mounted on the end face of the transmission box (103), a sleeve (105) mounted on the end face of the three-jaw chuck (104), an anchor rod mold (101) being arranged above the sleeve (105), characterized in that: Also includes: A clamping mechanism (2), the clamping mechanism (2) comprising two fixed rails (201) respectively fixedly connected to both sides of the inner wall of the frame (1), the inner walls of the two fixed rails (201) are slidably connected to a slide plate (202), the ends of the two slide plates (202) close to each other are fixedly connected to an arcuate rail (203), the inner walls of the two arcuate rails (203) are slidably connected to a first arcuate plate (204), two baffles (211) are provided above the sleeve (105), the ends of the two baffles (211) away from each other are fixedly connected to a magnet plate (210), a gear (212) is provided above the magnet plate (210), a bottom surface of the slide plate (202) is fixedly connected to a plurality of tooth blocks (213), the gear (212) is located below the slide plate (202), and the arcuate surface of the anchor rod mold (101) is fixedly connected to a round tube (216); A positioning mechanism (3), the positioning mechanism (3) comprising two second arc-shaped plates (302) located between two first arc-shaped plates (204), the inner arc surfaces of the two first arc-shaped plates (204) each having two limiting grooves (308), the circular arc surfaces of the two second arc-shaped plates (302) each being slidably connected to the two positioning plates (304), the surface of the first arc-shaped plates (204) being provided with a connecting rod (312), and the circular arc surface of the circular tube (216) being provided with a plurality of spiral grooves (315) cooperating with the connecting rod (312).

2. The device for accurately preparing an energy-absorbing anchor structure according to claim 1, characterized in that: One end of the first arc-shaped plate (204) is fixedly connected to a clamping block (205), and the other end of the first arc-shaped plate (204) is provided with a clamping slot (206) adapted to the clamping block (205). The surface of the fixed track (201) is fixedly connected to a fixed plate (207), and the surface of the fixed plate (207) is rotatably connected to a rotating rod (208). The arc surface of the rotating rod (208) is fixedly connected to a connecting plate (209). The magnet plate (210) is fixedly connected to the bottom surface of the connecting plate (209), and the gear (212) is fixedly connected to the arc surface of the rotating rod (208).

3. The device for accurately preparing an energy-absorbing anchor structure according to claim 1, characterized in that: A connecting piece (301) is provided on the bottom surface of the arc track (203), and two ends of the connecting piece (301) are fixedly connected to the arc track (203) and the second arc plate (302), respectively. The arc surface of the second arc plate (302) is provided with two sliding grooves (303), and the positioning plate (304) is slidably connected inside the sliding grooves (303).

4. The device for accurately preparing an energy-absorbing anchor structure according to claim 1, characterized in that: The bottom surface of the positioning plate (304) is fixedly connected to a first block (305), the surface of the first block (305) is fixedly connected to a first spring (306), the other end of the first spring (306) is fixedly connected to a second block (307), and the second block (307) is fixedly connected to the inner bottom wall of the slide groove (303).

5. The device for accurately preparing an energy-absorbing anchor structure according to claim 1, characterized in that: A square groove (309) is provided on the inner arc surface of the first arc-shaped plate (204), a rectangular block (310) is slidably provided inside the square groove (309), the connecting rod (312) is fixedly connected to the surface of the rectangular block (310), and three second springs (311) are fixedly connected to the surface of the rectangular block (310), and the three second springs (311) are all fixedly connected to the inner wall of the square groove (309), and the size of the rectangular block (310) is smaller than the size of the square groove (309).

6. The device for accurately preparing an energy-absorbing anchor structure according to claim 3, characterized in that: A groove (314) is provided on the surface of the connecting member (301), and the connecting rod (312) passes through the connecting member (301) via the groove (314). One end of the connecting rod (312) away from the rectangular block (310) is fixedly connected to the connecting block (313).

7. The device for accurately preparing an energy-absorbing anchor structure according to claim 1, characterized in that: The surface of the frame (1) is further provided with an elevator (4), the output end of the elevator (4) is fixedly connected to a mounting plate (401), the end surface of the mounting plate (401) is provided with a first clamping plate (402), a side of the first clamping plate (402) is provided with a second clamping plate (403), the anchor rod mold (101) is located between the first clamping plate (402) and the second clamping plate (403), the surface of the first clamping plate (402) is threadedly connected to two screws (404), and the arc surface of the anchor rod mold (101) is threadedly connected to a nut (405).

8. A method for accurately preparing an energy-absorbing anchor structure, using the apparatus for accurately preparing an energy-absorbing anchor structure according to any one of claims 1 to 7, characterized in that: S1. A layer of a polyethylene foam hollow thin tube having an inner diameter identical to the outer diameter of the anchor rod mold (101) is placed on the surface of the anchor rod mold (101) and fixed firmly with structural adhesive or the like, and a layer of water-based mold release agent is evenly applied on the surface of the polyethylene foam hollow thin tube so that the entire tube serves as a mold and is inserted into the sleeve (105) for pouring concrete; S2. After the standard curing cycle, ensure that the concrete strength meets the requirements. Before demoulding, check whether the demoulding template surface is flat and smooth, and conduct a trial demoulding to check whether the coating of the release agent and the condition of the concrete surface meet the requirements; S3. When demoulding, the anchor rod mold (101) and the polyethylene foam hollow thin tube are taken out together. Tools can be used to assist in demoulding. After demoulding, if part of the polyethylene foam is adhered to the concrete, physical methods can be used to pry the foam to separate it from the concrete. S4. After demoulding, check the surface quality of the concrete. If there are any defects, repair them in time. At the same time, clean and smooth the mold surface. If there are any damage or burrs, repair them in time to prepare for the next use.

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