Anchor rod anchoring strength detection device

Abstract

The invention belongs to the technical field of anchor rod detection, and particularly relates to an anchor rod anchoring strength detection device which comprises a drawing machine, the drawing machine comprises a workbench, a fixing plate is slidably connected to the upper portion of the workbench, a bonding layer is formed at the joint of a clamp and an anchor rod after an anchoring agent is cured, the friction force between the clamp and the anchor rod is remarkably increased, and the anchoring strength of the anchor rod is improved. The enhanced friction force is beneficial for reducing relative slippage between the anchor rod and the clamp in the drawing process, improving the clamping stability and further improving the accuracy of test data, meanwhile, vibration is transmitted into an anchoring agent through the arc-shaped clamping plate, a more uniform microstructure is beneficial for forming, stress concentration points are reduced, and the tensile strength of the anchor rod is improved. And secondly, the anchoring agent in the inner cavity of the supporting block can be stirred through rotation of the stirring rod, so that the layering or precipitation phenomenon possibly existing in the anchoring agent can be broken, internal components are more uniformly mixed, and the interior of the flowing-out anchoring agent is more uniform.

Description

Technical Field

[0001] The invention belongs to the technical field of anchor rod detection, in particular to an anchor rod anchoring strength detection device. Background Art

[0002] An anchor bolt strength testing device typically consists of core testing components, auxiliary fixing and operating components, and a data acquisition and processing system. Core testing components, such as hydraulic cylinders or vibrators, apply tension or vibration to the anchor bolt to obtain anchor performance data. Auxiliary fixing and operating components, such as clamps, brackets, and adjustment mechanisms, stabilize the anchor bolt and adjust the testing position. The data acquisition and processing system uses pressure sensors, displacement sensors, or accelerometers to record test data in real time. Software analyzes and processes this data, ultimately outputting quantitative results such as anchor strength and quality.

[0003] In the existing technology, when the anchor rod pulling test device is working in the laboratory, the anchor rod is first firmly installed on the test bench and connected to the pulling component (such as a hydraulic cylinder). The hydraulic system applies a gradually increasing pulling force to the cylinder, and the pulling force is transmitted to the anchor rod through the clamp to make it withstand axial pulling. Simultaneously, a pressure sensor is used to collect tension data in real time, and a displacement sensor is used to monitor the elongation of the anchor rod. The tension-displacement curve is continuously recorded during the test until the anchor rod is damaged or the preset termination conditions (such as tension value, displacement) are reached. Finally, the anchoring strength of the anchor rod and the performance of the anchoring system are evaluated by analyzing the curve characteristics (such as peak tension, failure mode).

[0004] There are still some problems in the actual application of the above scheme. Although the existing technology can complete the work of anchor rod pulling test, when pulling anchor rods with patterns (i.e., uneven surface), when using a clamp to clamp the anchor rod, due to the obstruction of the pattern, some parts of the clamp will first contact the raised parts of the anchor rod surface, while other parts will have gaps with the recessed parts and cannot form effective contact, which will lead to uneven clamping force. The uneven distribution of clamping force will make the anchor rod prone to local slippage during the pulling process, which will cause the anchor rod to undergo relative displacement in advance before reaching the true anchoring limit, resulting in the peak load recorded by the detection equipment being lower than the actual anchoring strength, which will affect the accuracy of the test results.

[0005] To this end, the present invention provides an anchor rod anchoring strength detection device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the anchor bolt anchoring strength detection device of the present invention includes a drawing machine, the drawing machine includes a workbench, a fixed plate is slidably connected to the upper part of the workbench, a drawing block is slidably connected to the upper part of the workbench, and a clamping injection mechanism is provided on the side of the drawing machine;

[0008] The clamping and injection mechanism includes an arc-shaped clamping plate, a guide tube is provided on the top of the arc-shaped clamping plate, a second protrusion is fixedly provided on the side of the guide tube, and the outer ring surface of the arc-shaped clamping plate is fixedly connected to the first protrusion. The anchor agent can be injected into the interior of the arc-shaped clamping plate by the up and down movement of the guide tube, and the movement of the guide tube drives the second protrusion to move, thereby vibrating the injected anchor agent.

[0009] Preferably, the clamping and injection mechanism includes a support block, the support block is fixedly connected to the side wall of the drawing block, and an inner cavity is opened in the support block;

[0010] The bottom of the support block is fixedly connected to a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected to an arc-shaped clamping plate, the inner ring surface of the arc-shaped clamping plate is fixedly connected to a protrusion, the bottom of the arc-shaped clamping plate is fixedly connected to a soft seal, and an injection hole is opened through the top of the arc-shaped clamping plate, and the injection hole consists of a vertical part and a horizontal part.

[0011] Preferably, there are two support blocks, and when the two support blocks are pressed against each other on opposite sides, they can form an annular clamp to clamp the anchor rod with a pattern. There are two protrusions, and when the two protrusions are pressed against each other on opposite sides, a cone is formed. A hole is provided through the contact area between the cone formed by the two protrusions and the inner arc surface of the arc-shaped clamping plate.

[0012] Preferably, the clamping injection mechanism also includes a piston rod, which is slidably connected to the top of the support block, the bottom of the piston rod is fixedly connected to a piston plate, the top of the piston plate is fixedly connected to a reciprocating spring, and the other end of the reciprocating spring is fixed to the top of the inner cavity of the support block.

[0013] Preferably, the piston plate is located at the top of the anchoring agent in the support block, and the provision of the reciprocating spring facilitates the resetting of the piston plate.

[0014] Preferably, the piston plate is fixedly connected with a guide tube passing through the outer ring surface, and the guide tube slides through the bottom of the inner cavity of the support block. The outer ring surface of the guide tube passing part is fixedly connected with a displacement ring, the inner arc surface of the displacement ring is fixedly connected with a second protrusion, and the outer ring surface of the top of the arc-shaped clamping plate is fixedly connected with a first protrusion.

[0015] Preferably, the guide tube and the vertical portion of the injection hole are on the same central axis, the second convex point and the first convex point are both elastic balls, and a groove adapted to the size of the displacement ring is provided at the bottom of the support block to facilitate the storage of the displacement ring.

[0016] Preferably, a rotating stirring mechanism for stirring is provided at the bottom of the clamping injection mechanism, and the rotating stirring mechanism includes a rotating cylinder, and the rotating cylinder is rotatably connected to the bottom of the inner cavity of the support block.

[0017] Preferably, an arcuate groove is provided on the inner arc surface of the rotating cylinder, a sliding rod is slidably connected in the arcuate groove, one end of the sliding rod is fixedly connected to a displacement rod, and a stirring rod is fixedly connected to the outer ring surface of the rotating cylinder.

[0018] Preferably, the arc-shaped groove is a spiral groove and can only drive the rotating cylinder to rotate one hundred and eighty degrees. The top of the displacement rod is fixedly connected to the bottom of the piston plate. The rotating cylinder and the piston rod are located on the same central axis, and the distance from the stirring rod to the central axis is smaller than the distance from the guide tube to the central axis.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The anchor bolt anchoring strength detection device described in the present invention, when the anchoring agent submerges the top of the piston plate, the anchoring agent will flow downward through the guide tube and be injected into the cavity formed by the two arc-shaped clamping plates through the injection hole. At this time, the anchoring agent falling into the cavity will be affected by the two protrusions and flow downward, and flow into the space between the anchor bolt and the two arc-shaped clamping plates through the holes at the junction of the protrusions and the arc-shaped clamping plates. Since the anchoring agent is fluid, it will gradually flow downward along the inside of the arc-shaped clamping plates and the outer annular surface of the anchor bolt. However, since the soft seal provided at the bottom of the arc-shaped clamping plate can adapt to the outer surface of the anchor bolt, The pattern of the annular surface, so the anchoring agent flowing to the bottom at this time is blocked by the soft seal and will not flow out of the cavity formed by the two arc-shaped clamping plates. When the added anchoring agent overflows the hole between the protrusion and the arc-shaped clamping plate, the injection will stop. When the anchoring agent has completed solidification, the pulling block is started to perform a pulling test on the anchor rod. After the anchoring agent is solidified, a bonding layer will be formed at the junction of the clamp and the anchor rod, which significantly increases the friction between the two. This enhanced friction helps to reduce the relative slippage between the anchor rod and the clamp during the pulling process, improve the clamping stability, and thus improve the accuracy of the test data.

[0021] 2. The anchor rod anchoring strength detection device described in the present invention, when the injection of the anchoring agent is completed, the piston plate will reset, and at the same time, it will drive the displacement ring fixed on the outer ring surface of the guide tube to move synchronously, and then drive the second protrusion to move. Since the outer ring surface of the arc-shaped clamping plate is also fixed with multiple first protrusions, and the first protrusions and the second protrusions are in a conflicting state, the second protrusion will generate vibration through the first protrusion when moving upward, and transmit it to the inside of the anchoring agent through the arc-shaped clamping plate, which helps to form a more uniform microstructure, reduce stress concentration points, and further improve the accuracy of the pull-out test.

[0022] 3. The anchor rod anchoring strength detection device described in the present invention, when the piston plate moves downward, it will synchronously drive the displacement rod fixed at the bottom of the piston plate to move downward synchronously, and then drive the sliding rod fixed at the bottom of the displacement rod to move synchronously. Since the inner ring surface of the rotating cylinder is provided with an arc groove, and one end of the sliding rod slides in the arc groove, when the displacement rod moves downward, it will be affected by the resistance force between the sliding rod and the arc groove and cannot move. However, since the rotating cylinder rotates at the bottom of the inner cavity of the support block, when the sliding rod moves downward, it will drive the rotating cylinder to rotate through the influence of the arc groove and the sliding rod, and then drive the stirring rod to rotate. The rotation of the stirring rod can stir the anchor agent in the inner cavity of the support block, thereby breaking the stratification or precipitation phenomenon that may exist inside the anchor agent, making the components (such as resin, curing agent, filler, etc.) more evenly mixed, and thus making the outflowing anchor agent more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0025] Figure 2 This is a bottom view of the drawing machine shown in the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the support block shown in the present invention;

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamping and injection mechanism shown in the present invention;

[0028] Figure 5 The present invention shows Figure 4 A in the middle is an enlarged structural diagram;

[0029] Figure 6 This is a schematic diagram of the internal structure of the arc-shaped clamping plate shown in the present invention;

[0030] Figure 7 This is a schematic diagram of the position structure of the clamping injection mechanism and the rotating stirring mechanism shown in the present invention;

[0031] Figure 8 It is a schematic diagram of the three-dimensional structure of the rotating stirring mechanism shown in the present invention;

[0032] In the figure: 1, drawing machine; 101, workbench; 102, fixing plate; 103, drawing block;

[0033] 2. Clamping and injection mechanism; 201. Support block; 202. Hydraulic cylinder; 203. Arc-shaped clamping plate; 204. Bump; 205. Soft seal; 206. Injection hole; 207. First bump; 208. Piston rod; 209. Piston plate; 210. Reciprocating spring; 211. Flow guide tube; 212. Displacement ring; 213. Second bump;

[0034] 3. Rotating stirring mechanism; 301. Rotating cylinder; 302. Arc groove; 303. Sliding rod; 304. Displacement rod; 305. Stirring rod. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0036] Example 1

[0037] like Figures 1 to 8 As shown, an anchor bolt anchoring strength detection device according to an embodiment of the present invention includes a drawing machine 1, wherein the drawing machine 1 includes a workbench 101, a fixed plate 102 is slidably connected to the upper portion of the workbench 101, a drawing block 103 is slidably connected to the upper portion of the workbench 101, and a clamping and injection mechanism 2 is provided on the side of the drawing machine 1;

[0038] The clamping and injection mechanism 2 includes an arc-shaped clamping plate 203, a guide tube 211 is provided on the top of the arc-shaped clamping plate 203, a second protrusion 213 is fixedly provided on the side of the guide tube 211, and the outer ring surface of the arc-shaped clamping plate 203 is fixedly connected to the first protrusion 207. The anchoring agent can be injected into the interior of the arc-shaped clamping plate 203 by the up and down movement of the guide tube 211, and the second protrusion 213 is driven to move by the movement of the guide tube 211, thereby vibrating the injected anchoring agent.

[0039] Specifically, although the existing technology can complete the work of anchor rod pulling test, when pulling anchor rods with patterns (i.e., uneven surfaces), when using a clamp to clamp the anchor rod, due to the obstruction of the patterns, some parts of the clamp will first contact the raised parts of the anchor rod surface, while other parts will have gaps with the recessed parts, and cannot form effective contact, which will lead to uneven clamping force. The uneven distribution of clamping force will make the anchor rod prone to local slippage during the pulling process, which will cause the anchor rod to undergo relative displacement in advance before reaching the true anchoring limit, resulting in the peak load recorded by the testing equipment being lower than the actual anchoring strength, which will affect the accuracy of the test results.

[0040] Therefore, the present invention solves this problem by providing a corresponding structure. In the anchor bolt anchor strength testing device described in the present invention, when it is necessary to perform a pulling test on the anchor bolt in the laboratory, the anchor bolt is manually placed on the opposite side of the two fixing plates 102, and the fixing plates 102 are pushed to clamp the anchor bolt and fix the fixing plates 102 by bolts and nuts, thereby completing the bottom fixing work of the anchor bolt. At this time, the pulling block 103 drives the clamp to move to the top of the anchor bolt and fixes the top of the anchor bolt through the clamp. At this time, the pulling block 103 slides upward, thereby pulling the anchor bolt. However, when pulling the anchor bolt with a pattern, that is, an uneven surface, when the clamp is used to clamp the anchor bolt, due to the obstruction of the pattern, some parts of the clamp will first contact the convex parts of the anchor bolt surface, while other parts will have gaps with the concave parts, and effective contact cannot be formed, which will result in uneven clamping force, and the uneven distribution of clamping force will cause the anchor bolt to be pulled. Local slippage is prone to occur during the pulling process, which will cause the anchor rod to undergo relative displacement in advance before reaching the true anchoring limit, resulting in the peak load recorded by the detection equipment being lower than the actual anchoring strength, which will affect the accuracy of the test results. At this time, the top of the anchor rod is clamped by two arc-shaped clamping plates 203. After the two arc-shaped clamping plates 203 complete the clamping work, the guide tube 211 will move downward, and at the same time, it will drive the second protrusion 213 to move downward. When the guide tube 211 moves to the appropriate position, the anchor agent will be injected into the arc-shaped clamping plate 203 through the guide tube 211. After the injection is completed, the guide tube 211 will move in the opposite direction and drive the second protrusion 213 to reset while moving. At this time, the second protrusion 213 will continuously conflict with the first protrusion 207 during the movement, thereby generating vibration, and then the vibration is transmitted to the inside through the arc-shaped clamping plate 203, thereby improving the uniformity of the anchor agent at the clamping end of the arc-shaped clamping plate 203 and the top of the anchor rod.

[0041] Example 2

[0042] like Figures 2 to 8 As shown in Comparative Example 1, another embodiment of the present invention is:

[0043] like Figure 3 and Figure 6 As shown, the clamping and injection mechanism 2 of this embodiment includes a support block 201, which is fixedly connected to the side wall of the drawing block 103, and an inner cavity is formed inside the support block 201;

[0044] The bottom of the support block 201 is fixedly connected to a hydraulic cylinder 202, the output end of the hydraulic cylinder 202 is fixedly connected to an arc-shaped clamping plate 203, the inner ring surface of the arc-shaped clamping plate 203 is fixedly connected to a protrusion 204, the bottom of the arc-shaped clamping plate 203 is fixedly connected to a soft seal 205, and an injection hole 206 is opened through the top of the arc-shaped clamping plate 203.

[0045] Specifically, when the anchor rod is clamped by the arc-shaped clamping plate 203 at the bottom, the hydraulic cylinder 202 fixed at the bottom of the support block 201 is started. At this time, the output ends of the two hydraulic cylinders 202 will respectively drive an arc-shaped clamping plate 203 to move relative to each other. When the two arc-shaped clamping plates 203 are against each other on opposite sides, the top of the anchor rod will contact the bottom of the conical structure composed of the two protrusions 204. At the same time, due to the characteristics of the soft seal 205 itself, it can adapt well to the pattern of the outer ring surface of the anchor rod, thereby improving the sealing of the bottom of the two arc-shaped clamping plates 203 and providing a good working space for subsequent work.

[0046] like Figure 3 As shown, the clamping injection mechanism 2 described in this embodiment also includes a piston rod 208, which is slidably connected to the top of the support block 201, and the bottom of the piston rod 208 is fixedly connected to a piston plate 209, and the top of the piston plate 209 is fixedly connected to a reciprocating spring 210, and the other end of the reciprocating spring 210 is fixed to the top of the inner cavity of the support block 201.

[0047] like Figure 3 and Figure 5 As shown, the piston plate 209 in this embodiment is fixedly connected with a guide tube 211 passing through near the outer ring surface. The guide tube 211 slides through the bottom of the inner cavity of the support block 201. The outer ring surface of the passing part of the guide tube 211 is fixedly connected with a displacement ring 212. The inner arc surface of the displacement ring 212 is fixedly connected with a second protrusion 213. The outer ring surface of the top of the arc-shaped clamping plate 203 is fixedly connected with the first protrusion 207.

[0048] Specifically, after the arc-shaped clamping plate 203 completes the clamping work on the upper part of the anchor rod, the piston rod 208 is manually pressed, and the piston rod 208 moves downward, and at the same time drives the piston plate 209 to perform synchronous downward pressing work, and at this time the reciprocating spring 210 is in a stretched state;

[0049] When the piston plate 209 moves downward, the guide tube 211 is fixed through the inner side of the piston plate 209 near the outer ring surface. Therefore, when the piston plate 209 moves downward, the guide tube 211 also moves downward synchronously. At this time, the anchoring agent in the inner cavity of the support block 201 is not flush with the top of the piston plate 209.

[0050] When the guide tube 211 moves downward, since the center axis of the guide tube 211 coincides with the center axis of the vertical part of the injection hole 206, the bottom of the guide tube 211 will be inserted into the vertical part of the injection hole 206 when the guide tube 211 drops to a certain height. At this time, the anchoring agent temporarily existing in the cavity of the support block 201 will submerge the top of the piston plate 209, and at this time the reciprocating spring 210 is still in a stretched state. When the anchoring agent submerges the top of the piston plate 209, the anchoring agent will flow downward through the guide tube 211 and be injected into the cavity formed by the two arc-shaped clamping plates 203 through the injection hole 206. At this time, the anchoring agent falling into the cavity will be affected by the two protrusions 204 and flow downward, and flow into the space between the anchor rod and the two arc-shaped clamping plates 203 through the hole at the junction of the protrusion 204 and the arc-shaped clamping plate 203. Since the anchoring agent has The fluidity is high, so it will gradually flow downward along the inside of the arc-shaped clamping plate 203 and the outer ring surface of the anchor rod. However, since the soft seal 205 provided at the bottom of the arc-shaped clamping plate 203 can adapt to the pattern of the outer ring surface of the anchor rod, the anchor agent flowing into the bottom at this time is blocked by the soft seal 205 and will not flow out of the cavity formed by the two arc-shaped clamping plates 203. When the added anchor agent overflows the hole between the protrusion 204 and the arc-shaped clamping plate 203, the injection will stop. When the anchor agent is completely solidified, the pulling block 103 is started to perform a pulling test on the anchor rod. Since the anchor agent forms a bonding layer at the junction of the clamp and the anchor rod after solidification, the friction between the two is significantly increased. This enhanced friction helps to reduce the relative slippage between the anchor rod and the clamp during the pulling process, improves the clamping stability, and thus can improve the accuracy of the test data.

[0051] After the injection of the anchoring agent is completed, the piston plate 209 will be reset, and at the same time, it will drive the displacement ring 212 fixed on the outer ring surface of the guide tube 211 to move synchronously, and then drive the second protrusion 213 to move. Since the outer ring surface of the arc-shaped clamping plate 203 is also fixed with multiple first protrusions 207, and the first protrusions 207 and the second protrusions 213 are in a conflicting state, the second protrusion 213 will generate vibration through the first protrusion 207 when moving upward, and transmit it to the inside of the anchoring agent through the arc-shaped clamping plate 203, which helps to form a more uniform microstructure, reduce stress concentration points, and further improve the accuracy of the pull-out test.

[0052] like Figure 7As shown, the bottom of the clamping injection mechanism 2 of this embodiment is provided with a rotating stirring mechanism 3 for stirring. The rotating stirring mechanism 3 includes a rotating cylinder 301 , and the rotating cylinder 301 is rotatably connected to the bottom of the inner cavity of the support block 201 .

[0053] like Figure 8 As shown, an arc groove 302 is provided on the inner arc surface of the rotating cylinder 301 in this embodiment, a sliding rod 303 is slidably connected in the arc groove 302, and a displacement rod 304 is fixedly connected to one end of the sliding rod 303. A stirring rod 305 is fixedly connected to the outer ring surface of the rotating cylinder 301.

[0054] Specifically, when the piston plate 209 moves downward, it will synchronously drive the displacement rod 304 fixed at the bottom of the piston plate 209 to move downward, and then drive the sliding rod 303 fixed at the bottom of the displacement rod 304 to move synchronously. Since the inner ring surface of the rotating cylinder 301 is provided with an arc groove 302, and one end of the sliding rod 303 slides in the arc groove 302, when the displacement rod 304 moves downward, it will be affected by the resistance force between the sliding rod 303 and the arc groove 302 and cannot move. However, due to the rotating cylinder 30 1 rotates at the bottom of the inner cavity of the support block 201, so when the sliding rod 303 moves downward, the rotating cylinder 301 will be driven to rotate through the influence of the arc groove 302 and the sliding rod 303, and then the stirring rod 305 will be driven to rotate. The rotation of the stirring rod 305 can stir the anchoring agent in the inner cavity of the support block 201, thereby breaking the stratification or precipitation phenomenon that may exist in the anchoring agent, making the various components (such as resin, curing agent, filler, etc.) more evenly mixed, and thus making the outflowing anchoring agent more uniform.

[0055] Working principle: when the anchor rod is clamped by the arc-shaped clamping plate 203 at the bottom, the hydraulic cylinder 202 fixed at the bottom of the support block 201 is started. At this time, the output ends of the two hydraulic cylinders 202 will respectively drive an arc-shaped clamping plate 203 to move relative to each other. When the two arc-shaped clamping plates 203 are against each other on opposite sides, the top of the anchor rod will contact the bottom of the conical structure composed of the two protrusions 204. At the same time, due to the characteristics of the soft seal 205 itself, it can adapt well to the pattern of the outer ring surface of the anchor rod, thereby improving the sealing of the bottom of the two arc-shaped clamping plates 203 and providing a good working space for subsequent work.

[0056] When the arc-shaped clamping plate 203 completes the clamping work on the upper part of the anchor rod, the piston rod 208 is manually pressed, and the piston rod 208 moves downward, and at the same time drives the piston plate 209 to press down synchronously. At this time, the reciprocating spring 210 is in a stretched state;

[0057] When the piston plate 209 moves downward, the guide tube 211 is fixed through the inner side of the piston plate 209 near the outer ring surface. Therefore, when the piston plate 209 moves downward, the guide tube 211 also moves downward synchronously. At this time, the anchoring agent in the inner cavity of the support block 201 is not flush with the top of the piston plate 209.

[0058] When the guide tube 211 moves downward, since the center axis of the guide tube 211 coincides with the center axis of the vertical part of the injection hole 206, the bottom of the guide tube 211 will be inserted into the vertical part of the injection hole 206 when the guide tube 211 drops to a certain height. At this time, the anchoring agent temporarily existing in the cavity of the support block 201 will submerge the top of the piston plate 209, and at this time the reciprocating spring 210 is still in a stretched state. When the anchoring agent submerges the top of the piston plate 209, the anchoring agent will flow downward through the guide tube 211 and be injected into the cavity formed by the two arc-shaped clamping plates 203 through the injection hole 206. At this time, the anchoring agent falling into the cavity will be affected by the two protrusions 204 and flow downward, and flow into the space between the anchor rod and the two arc-shaped clamping plates 203 through the hole at the junction of the protrusion 204 and the arc-shaped clamping plate 203. Since the anchoring agent has The fluidity is high, so it will gradually flow downward along the inside of the arc-shaped clamping plate 203 and the outer ring surface of the anchor rod. However, since the soft seal 205 provided at the bottom of the arc-shaped clamping plate 203 can adapt to the pattern of the outer ring surface of the anchor rod, the anchor agent flowing into the bottom at this time is blocked by the soft seal 205 and will not flow out of the cavity formed by the two arc-shaped clamping plates 203. When the added anchor agent overflows the hole between the protrusion 204 and the arc-shaped clamping plate 203, the injection will stop. When the anchor agent is completely solidified, the pulling block 103 is started to perform a pulling test on the anchor rod. Since the anchor agent forms a bonding layer at the junction of the clamp and the anchor rod after solidification, the friction between the two is significantly increased. This enhanced friction helps to reduce the relative slippage between the anchor rod and the clamp during the pulling process, improves the clamping stability, and thus can improve the accuracy of the test data.

[0059] After the injection of the anchoring agent is completed, the piston plate 209 will be reset, and at the same time, it will drive the displacement ring 212 fixed on the outer ring surface of the guide tube 211 to move synchronously, and then drive the second protrusion 213 to move. Since the outer ring surface of the arc-shaped clamping plate 203 is also fixed with multiple first protrusions 207, and the first protrusions 207 and the second protrusions 213 are in a conflicting state, the second protrusion 213 will generate vibration through the first protrusion 207 when moving upward, and transmit it to the inside of the anchoring agent through the arc-shaped clamping plate 203, which helps to form a more uniform microstructure, reduce stress concentration points, and further improve the accuracy of the pull-out test.

[0060] When the piston plate 209 moves downward, it will synchronously drive the displacement rod 304 fixed at the bottom of the piston plate 209 to move downward, and then drive the sliding rod 303 fixed at the bottom of the displacement rod 304 to move synchronously. Since the inner ring surface of the rotating cylinder 301 is provided with an arc groove 302, and one end of the sliding rod 303 slides in the arc groove 302, when the displacement rod 304 moves downward, it will be affected by the resistance force between the sliding rod 303 and the arc groove 302 and cannot move. However, since the rotating cylinder 301 is It rotates at the bottom of the inner cavity of the support block 201, so when the sliding rod 303 moves downward, it will drive the rotating cylinder 301 to rotate through the influence of the arc groove 302 and the sliding rod 303, and then drive the stirring rod 305 to rotate. The rotation of the stirring rod 305 can stir the anchor agent in the inner cavity of the support block 201, thereby breaking the stratification or precipitation phenomenon that may exist inside the anchor agent, making the various components (such as resin, curing agent, filler, etc.) more evenly mixed, and making the outflowing anchor agent more uniform.

[0061] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An anchor bolt anchoring strength detection device, comprising a drawing machine (1), the drawing machine (1) comprising a workbench (101), a fixed plate (102) slidably connected to the upper portion of the workbench (101), and a drawing block (103) slidably connected to the upper portion of the workbench (101), characterized in that: A clamping and injection mechanism (2) is provided on the side of the drawing machine (1); The clamping and injection mechanism (2) comprises an arc-shaped clamping plate (203), a guide tube (211) is provided on the top of the arc-shaped clamping plate (203), a second convex point (213) is fixedly provided on the side of the guide tube (211), and a first convex point (207) is fixedly connected to the outer ring surface of the arc-shaped clamping plate (203). Anchoring agent can be injected into the interior of the arc-shaped clamping plate (203) by moving the guide tube (211) up and down, and the movement of the guide tube (211) drives the second convex point (213) to move, thereby vibrating the injected anchoring agent.

2. The anchor bolt anchoring strength detection device according to claim 1, characterized in that: The clamping injection mechanism (2) comprises a support block (201), the support block (201) is fixedly connected to the side wall of the drawing block (103), and an inner cavity is provided inside the support block (201); The bottom of the support block (201) is fixedly connected to a hydraulic cylinder (202), the output end of the hydraulic cylinder (202) is fixedly connected to an arc-shaped clamping plate (203), the inner ring surface of the arc-shaped clamping plate (203) is fixedly connected to a protrusion (204), the bottom of the arc-shaped clamping plate (203) is fixedly connected to a soft sealing member (205), and the top of the arc-shaped clamping plate (203) is penetrated by an injection hole (206), and the injection hole (206) consists of a vertical portion and a transverse portion.

3. The anchor bolt anchoring strength detection device according to claim 2, characterized in that: There are two support blocks (201), and when the two support blocks (201) are pressed against each other on opposite sides, they can form an annular clamp, thereby clamping the anchor rod with a pattern. There are two protrusions (204), and when the two protrusions (204) are pressed against each other on opposite sides, they can form a cone. A hole is provided through the contact area between the cone formed by the two protrusions (204) and the inner arc surface of the arc-shaped clamping plate (203).

4. The anchor bolt anchoring strength detection device according to claim 3, characterized in that: The clamping injection mechanism (2) also includes a piston rod (208), which is slidably connected to the top of the support block (201), and the bottom of the piston rod (208) is fixedly connected to a piston plate (209), and the top of the piston plate (209) is fixedly connected to a reciprocating spring (210), and the other end of the reciprocating spring (210) is fixed to the top of the inner cavity of the support block (201).

5. The anchor bolt anchoring strength detection device according to claim 4, characterized in that: The piston plate (209) is located at the top of the anchoring agent in the support block (201), and the arrangement of the reciprocating spring (210) facilitates the piston plate (209) to perform a resetting operation.

6. The anchor bolt anchoring strength detection device according to claim 5, characterized in that: The piston plate (209) is fixedly connected to a guide tube (211) passing through the piston plate (209) near the outer ring surface. The guide tube (211) passes through and slides on the bottom of the inner cavity of the support block (201). The outer ring surface of the passing portion of the guide tube (211) is fixedly connected to a displacement ring (212). The inner arc surface of the displacement ring (212) is fixedly connected to a second convex point (213). The outer ring surface of the top of the arc-shaped clamping plate (203) is fixedly connected to a first convex point (207).

7. The anchor bolt anchoring strength detection device according to claim 6, characterized in that: The guide tube (211) and the vertical portion of the injection hole (206) are located on the same central axis. The second convex point (213) and the first convex point (207) are both elastic balls. The bottom of the support block (201) is provided with a groove that matches the size of the displacement ring (212) to facilitate the storage of the displacement ring (212).

8. The anchor bolt anchoring strength detection device according to claim 1, characterized in that: A rotating stirring mechanism (3) for stirring is provided at the bottom of the clamping injection mechanism (2). The rotating stirring mechanism (3) comprises a rotating cylinder (301). The rotating cylinder (301) is rotatably connected to the bottom of the inner cavity of the support block (201).

9. The anchor bolt anchoring strength detection device according to claim 8, characterized in that: An arcuate groove (302) is provided on the inner arc surface of the rotating cylinder (301), a sliding rod (303) is slidably connected in the arcuate groove (302), one end of the sliding rod (303) is fixedly connected to a displacement rod (304), and a stirring rod (305) is fixedly connected to the outer ring surface of the rotating cylinder (301).

10. The anchor bolt anchoring strength detection device according to claim 9, characterized in that: The arc-shaped groove (302) is a spiral groove and can only drive the rotating cylinder (301) to rotate 180 degrees. The top of the displacement rod (304) is fixedly connected to the bottom of the piston plate (209). The rotating cylinder (301) and the piston rod (208) are located on the same central axis, and the distance from the stirring rod (305) to the central axis is smaller than the distance from the guide tube (211) to the central axis.

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