Anchor Pull-out Force Testing Device and Testing Method

Abstract

This invention relates to the field of anchor pull-out resistance testing technology, and discloses an anchor pull-out resistance testing device and its testing method. The upper end of the testing platform is symmetrically equipped with limiting frames for sliding connection of the left and right pull-out frames. A gear assembly is provided in the notch groove in the middle of the limiting frames. Clamping and locking components for installing the anchor assembly are provided in the inner middle of both the left and right pull-out frames. L-shaped shearing components are slidably connected to the front and rear of the cross-shaped groove. This invention adopts a purely mechanical meshing transmission structure, ensuring high synchronization accuracy of the left and right pull-out frame displacements, avoiding the additional bending moment caused by unilateral pull-out, reducing testing errors. Furthermore, the mechanical transmission is not affected by electrical control interference, maintaining stability even in harsh environments such as construction sites, resulting in more accurate and reliable test data. During the pull-out process, the nut pushes the abutment assembly to move, and through the inclined groove linkage, the clamping arm automatically clamps the anchor, eliminating the need for manual bolt adjustment, shortening clamping time, and significantly improving testing efficiency.

Description

Technical Field

[0001] This invention relates to the field of anchor pull-out resistance testing technology, specifically to an anchor pull-out resistance testing device and its testing method. Background Technology

[0002] In geotechnical engineering, civil engineering, and other fields, anchor bodies (such as anchor bolts and anchor cables) are core components ensuring structural stability, and the test results of their pull-out force and shear force directly determine the safety level of the project. However, existing anchor body testing equipment has many technical drawbacks in practical applications, specifically as follows:

[0003] Poor synchronization of pulling and large detection error: Traditional detection equipment mostly adopts a single-sided hydraulic cylinder pulling structure. During the pulling process, the anchor body is prone to eccentric displacement due to unilateral force, resulting in additional bending moment (error ≥15%), which cannot truly reflect the pull-out resistance of the anchor body.

[0004] The clamping operation is cumbersome and has poor adaptability: the existing clamping structure requires manual adjustment of bolts or clamps to fix the anchor body, and the clamping time is as long as 5-10 minutes per time; moreover, the clamp specifications are fixed, and the clamps need to be changed frequently for anchor bodies of different diameters (10-50mm), which has a high operation threshold and low efficiency, and cannot meet diverse testing needs; at the same time, it is difficult to guarantee the coaxiality of the anchor body after clamping (coaxiality error ≥0.8mm), which further amplifies the testing error.

[0005] Limited functionality and inability to simulate real-world stress scenarios: In actual engineering projects, anchor bodies often bear both tensile and shear forces simultaneously. However, existing equipment can only detect pull-out force or shear force separately, requiring two separate tests to obtain complete performance data, which cannot recreate the true stress state of the anchor body. To address this, we have developed an anchor body pull-out force testing device and its testing method. Summary of the Invention

[0006] The purpose of this invention is to provide an anchor pull-out force testing device and method to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An anchor pull-out force testing device includes a testing platform. The upper end of the testing platform is symmetrically provided with limiting frames for sliding connection of a left pull-out frame and a right pull-out frame. A gear assembly is provided at the notch in the middle of the limiting frame. The gear assembly is used to realize the meshing of the left pull-out frame and the right pull-out frame.

[0009] Both the left and right pull-out frames are provided with clamping and locking components for installing the anchor solid assembly in the middle of their inner sides.

[0010] The testing platform has a cross groove in the middle, and an L-shaped shearing assembly is slidably connected to the front and rear parts of the cross groove. The outer end of the L-shaped shearing assembly is movably connected to the inner wall of the right puller.

[0011] When the hydraulic cylinder on the testing platform pulls the anchor solid assembly through the left puller, the left puller drives the right puller through the gear assembly to pull the anchor solid assembly synchronously. This causes the clamping and locking assemblies arranged on the left and right sides to lock and fix the anchor solid assembly coaxially. At the same time, the right puller drives the L-shaped shearing assembly to press the anchor solid assembly tightly from the front and rear sides, simulating the shearing force that the anchor solid assembly is subjected to in the installation state.

[0012] Preferably, the hydraulic cylinder is fixed in the center on the left side of the upper end of the testing platform with a reinforcing rib, and the piston rod at the output end of the hydraulic cylinder is connected to the middle of the right puller.

[0013] Preferably, the first racks on the front and rear sides of the left puller are slidably connected inside the limiting frame, and the second racks on the front and rear sides of the right puller are slidably connected inside the limiting frame.

[0014] The gear assembly includes a drive gear meshing between corresponding first and second racks, and the drive gear is movably connected to the notch slot via a rotating shaft fixed at the bottom center.

[0015] Preferably, the anchor assembly includes an anchor rod and nuts screwed to both ends of the anchor rod;

[0016] The clamping and locking assembly includes a limiting cylinder fixed to the inner center of the left and right pull-out frames, an abutting component and a clamping component that are equidistantly connected on the limiting cylinder;

[0017] Both ends of the anchor rod are set in the corresponding limiting cylinder. When the left and right clamping locking components pull the anchor solid component, the nut pushes the corresponding abutment component to move relative to the limiting cylinder, so that the abutment component drives the clamping component to clamp the anchor rod, thereby realizing the coaxial locking and fixing of the anchor solid component and the left and right clamping locking components.

[0018] The inner end of the limiting cylinder is open, and a first clearance groove is provided in the center of the top of the limiting cylinder, and a second clearance groove is provided at the outer end of the first clearance groove.

[0019] Preferably, the limiting cylinder is provided with through grooves at equal intervals, and the inner end of the limiting cylinder is provided with U-shaped sliding grooves symmetrically.

[0020] The abutting assembly includes a semi-circular abutting ring that slides onto the inner wall of the limiting cylinder, an outer ring arc-shaped seat whose outer wall is fixed by a slider, and U-shaped seats that are equally spaced on the inner end of the outer ring arc-shaped seat.

[0021] The outer ring arc-shaped seat slides against the outer wall of the limiting cylinder, and the slider slides against the corresponding U-shaped groove;

[0022] The clamping assembly includes a clamping arm movably connected to the through groove by a first pin. The inner end of the clamping arm extends into the inside of the limiting cylinder through the through groove, and a clamping protrusion is provided on the inner wall of the inner end of the clamping arm. The outer end of the clamping arm extends out of the limiting cylinder through the through groove and extends into the corresponding U-shaped seat. The second pin of the outer end of the clamping arm slides into the corresponding first inclined groove on the U-shaped seat.

[0023] Preferably, the L-shaped shearing assembly includes an L-shaped shearing seat that slides between the front and rear parts of a cross groove, and two sets of connecting ear plates are provided on the upper part of the outer side of the L-shaped shearing seat.

[0024] A connecting block is fixed on the inner wall of the second rack. The connecting block extends from the inside of the notch and extends into the upper and lower sets of connecting lugs. The third pin on the inner end of the connecting block slides into the second inclined groove on the connecting lug.

[0025] The present invention also provides a detection method for an anchor pull-out force detection device, specifically including the following steps:

[0026] S1. Place both ends of the anchor solid assembly inside the clamping and locking assembly;

[0027] S2. The hydraulic cylinder drives the left puller to pull the anchor body assembly. The left puller drives the right puller to pull the anchor body assembly synchronously through the gear assembly, so that the clamping and locking assemblies arranged on the left and right sides can coaxially lock and fix the anchor body assembly.

[0028] S3. At the same time, the right puller drives the L-shaped shear assembly to press the anchor solid assembly tightly from both the front and rear sides, simulating the shear force experienced by the anchor solid assembly in the installed state.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] This invention adopts a pure mechanical meshing transmission structure of "first rack + drive gear + second rack", and the synchronization accuracy of the left and right puller displacement can reach ±0.1mm, avoiding the additional bending moment generated by unilateral pull, reducing the detection error by 30%, which is far superior to traditional unilateral pull equipment (error ≥15%). Moreover, the mechanical transmission is not affected by electrical control interference and can remain stable in harsh environments such as construction sites, making the detection data more accurate and reliable.

[0031] Automatic clamping improves efficiency: During the pulling process, the nut pushes the abutment component to move, and the clamping arm automatically clamps the anchor body through the inclined groove linkage. There is no need for manual adjustment of the bolts, and the clamping time is shortened from 5-10 minutes to less than 1 minute, which greatly improves the detection efficiency. Moreover, the clamping force is linked to the pulling force. The greater the pulling force, the stronger the clamping force, avoiding the uncertainty of manual adjustment of clamping force.

[0032] Adaptive to multiple specifications, no need to change clamps: The clamping arms with equal spacing can automatically adjust the clamping range according to the diameter of the anchor body (10-50mm), adapting to mainstream anchor body specifications, without the need for frequent clamp changes; at the same time, the coaxiality error of the anchor body after clamping is ≤0.2mm, ensuring that the pull-out force is transmitted along the axis, further improving the detection accuracy.

[0033] By utilizing the motion synchronization of the right pull-out frame to drive the L-shaped shear assembly, an integrated detection of "pull-out force and shear force" is achieved without the need for an additional shear drive system. This eliminates the need for two separate detections, improving detection efficiency and accurately simulating the complex stress scenarios of anchor bodies in actual engineering projects. The detection data is more closely aligned with the actual needs of engineering projects, providing a more comprehensive basis for engineering safety assessments. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the state structure in which the anchor solid assembly is placed into the clamping and locking assembly according to the present invention;

[0035] Figure 2 This is an exploded structural diagram of the entire invention;

[0036] Figure 3 This is a schematic diagram of the structure of the detection stage and the limiting frame of the present invention;

[0037] Figure 4 This is an exploded structural diagram of the clamping and locking assembly of the present invention;

[0038] Figure 5 This is a three-dimensional structural diagram of the clamping and locking assembly of the present invention;

[0039] Figure 6 This is a three-dimensional structural diagram of the connection between the abutment component and the clamping component of the present invention;

[0040] Figure 7 For the present invention Figure 4 A schematic diagram of the three-dimensional structure from another perspective;

[0041] Figure 8 For the present invention Figure 5 A schematic diagram of the three-dimensional structure from another perspective;

[0042] Figure 9 For the present invention Figure 6 A schematic diagram of the three-dimensional structure from another perspective;

[0043] Figure 10 This is a schematic diagram showing the connection between the gear assembly, left puller, right puller, and L-shaped shear assembly of the present invention.

[0044] Figure 11 This is a three-dimensional structural diagram of the present invention after the anchor solid component is placed on the clamping and locking component;

[0045] Figure 12 For the present invention Figure 11 A three-dimensional structural diagram showing the connection between the anchor solid assembly and the clamping and locking assembly;

[0046] Figure 13 This is a schematic diagram of the structural state for the pull-out test of the present invention;

[0047] Figure 14 For the present invention Figure 13 A three-dimensional structural diagram showing the connection between the central anchor solid assembly and the clamping and locking assembly;

[0048] Figure 15 For the present invention Figure 13 A schematic diagram of the three-dimensional structure from another perspective.

[0049] In the diagram: 1. Testing table; 101. Cross groove; 2. Limiting frame; 201. Notch groove; 3. Clamping and locking assembly; 301. Limiting cylinder; 302. Through groove; 303. U-shaped slide groove; 304. First clearance groove; 305. Second clearance groove; 306. Clamping arm; 307. First pin; 308. Second pin; 309. Clamping protrusion; 310. Semi-circular abutment ring; 311. Slider; 312. U-shaped seat 313. First inclined groove; 314. Outer ring arc seat; 4. Anchor bolt; 5. L-shaped shear seat; 501. Connecting ear plate; 502. Second inclined groove; 6. Hydraulic cylinder; 7. Drive gear; 701. Rotary shaft; 8. Nut; 9. Left pull-out bracket; 901. First rack; 10. Right pull-out bracket; 1001. Second rack; 1002. Connecting block; 1003. Third pin; 11. Reinforcing rib plate; 12. Piston rod. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Example:

[0052] Please see Figure 1-15 The present invention provides a technical solution:

[0053] An anchor pull-out force testing device includes a testing platform 1. The upper end of the testing platform 1 is symmetrically provided with a limiting frame 2 for sliding connection of a left pull-out frame 9 and a right pull-out frame 10. A gear assembly is provided at the notch 201 in the middle of the limiting frame 2. The gear assembly is used to realize the meshing of the left pull-out frame 9 and the right pull-out frame 10.

[0054] The hydraulic cylinder 6 is controlled by a PLC. The hydraulic cylinder 6 is fixed in the center on the left side of the upper end of the test platform 1 by a reinforcing rib plate 11. The piston rod 12 at the output end of the hydraulic cylinder 6 is connected to the middle of the right puller 10.

[0055] The first racks 901 on the front and rear sides of the left puller 9 slide into the inside of the limiting frame 2, and the second racks 1001 on the front and rear sides of the right puller 10 slide into the inside of the limiting frame 2.

[0056] The gear assembly includes a drive gear 7 meshing between corresponding first rack 901 and second rack 1001. The drive gear 7 is movably connected to the notch slot 201 via a rotating shaft 701 fixed at the bottom center.

[0057] By engaging the drive gear 7 with the first rack 901 and the second rack 1001, the displacement synchronization accuracy of the left pull-out bracket 9 and the right pull-out bracket 10 is ±0.1mm, avoiding eccentricity of the anchor body assembly caused by unilateral pull-out, and reducing the detection error by 30%.

[0058] The double pull-out frame applies force symmetrically, and the pull-out force is transmitted along the axis of the anchor body component to ensure that the test data reflects the true pull-out force (traditional single-sided pull-out is prone to additional bending moment due to eccentricity, with an error ≥15%).

[0059] Both the left pull-out bracket 9 and the right pull-out bracket 10 have a clamping and locking assembly 3 for installing the anchor solid assembly in the middle of their inner sides;

[0060] The anchor assembly includes an anchor bolt 4 and nuts 8 screwed to both ends of the anchor bolt 4;

[0061] The clamping and locking assembly 3 includes a limiting cylinder 301 fixed in the middle of the inner side of the left pull-out bracket 9 and the right pull-out bracket 10, as well as abutting components and clamping components that are equidistantly connected on the limiting cylinder 301.

[0062] The two ends of the anchor bolt 4 are set in the corresponding limiting cylinders 301. When the left and right clamping locking components 3 pull the anchor solid component, the nut 8 pushes the corresponding abutment component to move relative to the limiting cylinder 301, so that the abutment component drives the clamping component to clamp the anchor bolt 4, thereby realizing the coaxial locking and fixing of the anchor solid component and the left and right clamping locking components 3.

[0063] The inner end of the limiting cylinder 301 is open, and a first clearance groove 304 is provided in the center of the top of the limiting cylinder 301. A second clearance groove 305 is provided at the outer end of the first clearance groove 304.

[0064] The limiting cylinder 301 is provided with through grooves 302 at equal intervals, and the inner end of the limiting cylinder 301 is symmetrically provided with U-shaped sliding grooves 303.

[0065] The abutting component includes a semi-circular abutting ring 310 that slides against the inner wall of the limiting cylinder 301, an outer ring arc-shaped seat 314 whose outer wall is fixed by a slider 311, and U-shaped seats 312 that are equally spaced on the inner end of the outer ring arc-shaped seat 314.

[0066] Since the semi-circular abutment ring 310 slides on the inner wall of the limiting cylinder 301, the outer ring arc seat 314 slides on the outer wall of the limiting cylinder 301, and the slider 311 slides on the corresponding U-shaped groove 303.

[0067] This design restricts the semi-circular abutment ring 310 to move only along the axis of the limiting cylinder 301, preventing the semi-circular abutment ring 310 from shifting and causing uneven force on the clamping arm 306.

[0068] The clamping assembly includes a clamping arm 306 movably connected to the through groove 302 via a first pin 307. The inner end of the clamping arm 306 extends into the limiting cylinder 301 through the through groove 302, and a clamping protrusion 309 is provided on the inner wall of the inner end of the clamping arm 306. The clamping protrusion 309 increases the friction with the anchor rod 4, and the nut 8 is clamped on the outer end of the corresponding semi-circular abutment ring 310 to prevent the anchor assembly from slipping during pull-out (the slippage rate is reduced from 8% in traditional equipment to 0%).

[0069] The outer end of the clamping arm 306 extends out of the limiting cylinder 301 via the through groove 302 and extends into the corresponding U-shaped seat 312, and the second pin 308 of the outer end of the clamping arm 306 slides into the corresponding first inclined groove 313 on the U-shaped seat 312.

[0070] Automatic locking: No manual adjustment is required. The locking is automatically achieved during the pulling process (the locking force is linked with the pulling force), and the clamping time is reduced from 5-10 minutes in traditional equipment to less than 1 minute.

[0071] Adaptive design: The clamping arm 306 can automatically adjust the clamping range according to the diameter of the anchor bolt 4 (adapting to diameters of 10-50mm), eliminating the need to replace the clamps and improving the equipment's versatility.

[0072] The middle part of the testing table 1 is provided with a cross groove 101, and the front and rear parts of the cross groove 101 are slidably connected with an L-shaped shearing assembly. The outer end of the L-shaped shearing assembly is movably connected to the inner wall of the right puller 10.

[0073] The L-shaped shear assembly includes an L-shaped shear seat 5 that slides between the front and rear parts of the cross groove 101, and two sets of connecting ear plates 501 are provided on the upper part of the outer side of the L-shaped shear seat 5.

[0074] A connecting block 1002 is fixed on the inner wall of the second rack 1001. The connecting block 1002 extends from the inside of the notch 201 and extends into the upper and lower sets of connecting ear plates 501. The third pin 1003 on the inner end of the connecting block 1002 slides into the second inclined groove 502 on the connecting ear plate 501.

[0075] When the hydraulic cylinder 6 on the testing platform 1 pulls the anchor solid assembly through the left puller 9, the left puller 9 drives the right puller 10 to pull the anchor solid assembly synchronously through the gear assembly, so that the clamping and locking assemblies 3 arranged on the left and right sides can coaxially lock and fix the anchor solid assembly. At the same time, the right puller 10 drives the L-shaped shearing assembly to press the anchor solid assembly tightly from the front and rear sides, simulating the shearing force that the anchor solid assembly is subjected to in the installation state.

[0076] The present invention also provides a detection method for an anchor pull-out force detection device, specifically including the following steps:

[0077] S1. Place both ends of the anchor solid assembly inside the clamping and locking assembly 3;

[0078] S2, the hydraulic cylinder 6 drives the left puller 9 to pull the anchor solid component. The left puller 9 drives the right puller 10 to pull the anchor solid component synchronously through the gear assembly, so that the clamping and locking components 3 arranged on the left and right sides can coaxially lock and fix the anchor solid component.

[0079] S3. At the same time, the right pull-out bracket 10 drives the L-shaped shear assembly to press the anchor solid assembly tightly from both the front and rear sides, simulating the shear force experienced by the anchor solid assembly in the installation state.

[0080] Specifically, when using it:

[0081] 1. Pre-treatment stage: initial clamping of the anchor solid assembly.

[0082] Before testing, the anchor body assembly to be tested (anchor rod 4 + nuts 8 at both ends) must be accurately placed in the clamping and locking assembly 3 to lay the foundation for subsequent synchronous pulling and locking. Operating procedure:

[0083] Component positioning: The clamping component (clamping arm 306) is in the avoidance state, that is, the clamping arm 306 is close to the inner wall of the limiting cylinder 301, and the clamping protrusion 309 is not in contact with the surface of the anchor rod 4. Under the avoidance state of the clamping component, it is prepared for the two ends of the anchor rod 4 to be placed in the limiting cylinder 301 through the first avoidance groove 304.

[0084] The two ends of the anchor bolt 4 are placed into the limiting cylinders 301 inside the left pull-out bracket 9 and the right pull-out bracket 10 respectively via the first clearance groove 304. The second clearance groove 305 ensures that the nuts 8 at both ends of the anchor bolt 4 can be inserted, and that the nuts 8 are located at the outer ends of the corresponding semi-circular abutment rings 310 (e.g., Figure 11 and 12 (The state shown).

[0085] 2. The anchor solid assembly is pulled out synchronously and locked coaxially.

[0086] After the hydraulic cylinder 6 is activated, the left puller 9 and the right puller 10 move synchronously in opposite directions through the meshing transmission of the gear assembly, thereby driving the clamping and locking assembly 3 to automatically lock the anchor body assembly coaxially. The specific process is as follows:

[0087] Power input and synchronous transmission: The piston rod 12 of the hydraulic cylinder 6 (fixed by the reinforcing rib 11, with stable output force) retracts, moving the left puller 9 to the left along the limit frame 2 (the first rack 901 on the front and rear sides of the left puller 9 slides along the inner wall of the limit frame 2).

[0088] The first rack 901 meshes with the drive gear 7 in the notch 201, causing the drive gear 7 to rotate around the rotating shaft 701;

[0089] The drive gear 7 then meshes with the second rack 1001 of the right puller 10, causing the right puller 10 to move to the right along the limit frame, ultimately achieving "reverse synchronous movement" of the left puller 9 and the right puller 10 (displacement synchronization accuracy ±0.1mm), avoiding the displacement of the anchor solid assembly caused by unilateral pull.

[0090] Automatic coaxial locking: As the left puller 9 and the right puller 10 move away from each other, the nut 8 pushes the semi-circular abutment ring 310 inside the limiting cylinder 301, causing the semi-circular abutment ring 310 to move relative to the limiting cylinder 301 towards the inner end of the limiting cylinder 301, which in turn drives the outer ring arc seat 314 (which slides along the U-shaped groove 303 via the slider 311) to move synchronously.

[0091] The U-shaped seat 312 on the outer ring arc seat 314 moves with it, and the first inclined groove 313 on the U-shaped seat 312 pushes the clamping arm 306 to rotate around the first pin 307 through the second pin 308;

[0092] The clamping protrusions 309 on the inner ends of several sets of clamping arms 306, which are set at equal intervals, move closer to the surface of the anchor rod 4, and finally tightly clamp the anchor rod 4 (the clamping force increases with the increase of the pull-out force), so as to achieve "coaxial locking" between the anchor body assembly and the clamping and locking assembly 3 (coaxiality error ≤ 0.2mm), ensuring that the pull-out force is transmitted along the axis of the anchor body assembly and avoiding detection errors caused by eccentricity.

[0093] 3. Simulation of synchronous shear force.

[0094] During the pulling and locking process, the movement of the right pulling frame 10 synchronously drives the L-shaped shear assembly to apply shear force to the anchor bolt 4, simulating the stress state of the anchor bolt 4 during actual installation (such as the anchor bolt 4 being subjected to both pulling force and shear force in geotechnical engineering). Specific logic:

[0095] L-shaped shear assembly linkage: When the right puller 10 moves to the right, the connecting block 1002 on the inner wall of its second rack 1001 moves synchronously; the third pin 1003 on the inner side of the connecting block 1002 slides in the second inclined groove 502 of the connecting ear plate 501 of the L-shaped shear seat 5, converting the "horizontal movement" of the right puller 10 into the "movement perpendicular to the axis of the anchor rod 4" of the L-shaped shear seat 5.

[0096] Shear force application: The front and rear sets of L-shaped shear seats 5 approach each other along the front and rear parts of the cross groove 101 of the detection table 1, and press the middle area of ​​the anchor rod 4 from the front and rear sides (the shear contact area can be adjusted by the size of the L-shaped shear seat 5). The magnitude of the shear force is proportional to the displacement of the right pull-out frame 10 (which can be indirectly controlled by the pressure of the hydraulic cylinder 6), so as to realize the coordinated application of "pull-out force-shear force" and restore the real stress scenario of the anchor rod component.

[0097] 4. Data collection and testing completed.

[0098] During the drawing and shearing process, key data is collected in real time by multiple sets of sensors. The force sensor on the hydraulic cylinder 6 records the magnitude of the drawing force, and the shearing force sensor on the L-shaped shearing seat 5 collects the shearing force data. All data is transmitted to the PLC control system in real time, which is convenient for operators to monitor in real time.

[0099] When the anchor body component reaches its ultimate load (such as when it breaks or shears), the system automatically records the maximum pull-out force and the corresponding shear force at this time, which are the test results of the pull-out force and shear force of the anchor body component.

[0100] After the test is completed, the piston rod 12 of the hydraulic cylinder 6 extends and resets, driving the left puller 9 to move to the right. Through the gear assembly, the right puller 10 moves to the left. The components move in opposite directions, and the semi-circular abutment ring 310 is no longer squeezed by the nut 8. The outer ring arc seat 314 is manually moved so that the abutment component moves relative to the limiting cylinder 301 to the outer end of the limiting cylinder 301 until the clamping locking component 3 returns to the avoidance state. The L-shaped shear seat 5 resets along the cross groove, the anchor solid component is released, the device returns to the initial state, and the next test can be performed.

[0101] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anchorage body uplift force detection device comprising a detection platform, characterized in that: The upper end of the detection table is symmetrically provided with a limiting frame for slidingly connecting the left and right pulling frames, a gear assembly is arranged in the notch groove in the middle of the limiting frame, and the gear assembly is used to realize the engagement of the left and right pulling frames; The middle of the inner side of the left and right pulling frames is provided with a clamping and locking assembly for mounting the anchoring body assembly; The middle of the detection table is provided with a cross recess, and the front and rear parts of the cross recess are slidingly connected with L-shaped shearing assemblies, and the outer side end of the L-shaped shearing assembly is movably connected with the inner wall of the right pulling frame; When the hydraulic cylinder on the detection table pulls the anchoring body assembly through the left pulling frame, the right pulling frame is also driven by the gear assembly to pull the anchoring body assembly synchronously, so that the coaxial locking and fixing of the anchoring body assembly are realized by the left and right symmetrically arranged clamping and locking assemblies, at the same time, the L-shaped shearing assembly is driven by the right pulling frame to tightly press the anchoring body assembly from the front and rear sides, thereby simulating the shearing force received by the anchoring body assembly in the installed state; The anchoring body assembly comprises an anchor rod and nuts screwed on both ends of the anchor rod; The clamping and locking assembly comprises a limiting cylinder fixed in the middle of the inner side of the left and right pulling frames, and a abutting assembly and an equidistantly movably connected clamping assembly arranged on the limiting cylinder; Both ends of the anchor rod are arranged in the corresponding limiting cylinder, and when the left and right clamping and locking assemblies pull the anchoring body assembly, the corresponding abutting assembly is moved relative to the limiting cylinder by the nut, so that the abutting assembly drives the clamping assembly to clamp the anchor rod, thereby realizing the coaxial locking and fixing of the anchoring body assembly and the left and right clamping and locking assemblies; The inner side end of the limiting cylinder is open, a first avoiding groove is arranged in the middle of the top of the limiting cylinder, and a second avoiding groove is arranged on the outer side end of the first avoiding groove; Equidistant through grooves are arranged on the limiting cylinder, and U-shaped sliding grooves are symmetrically arranged on the inner side end of the limiting cylinder; The abutting assembly comprises a semicircular abutting ring slidingly connected with the inner wall of the limiting cylinder, an outer ring arc-shaped seat with the outer side wall of the semicircular abutting ring movably fixed by a sliding block, and a U-shaped seat equidistantly arranged on the inner side end of the outer ring arc-shaped seat; The outer ring arc-shaped seat is slidingly connected with the outer wall of the limiting cylinder, and the sliding block is slidingly connected with the corresponding U-shaped sliding groove; The clamping assembly comprises a clamping arm movably connected with the through groove by a first pin shaft, the inner side end of the clamping arm extends into the limiting cylinder through the through groove, and a clamping protrusion is arranged on the inner wall of the inner side end of the clamping arm, the outer side end of the clamping arm extends into the corresponding U-shaped seat through the through groove, and a second pin shaft of the outer side end of the clamping arm is slidingly connected with a first inclined groove in the U-shaped seat.

2. The uplift force detection device for an anchor body according to claim 1, characterized in that: The hydraulic cylinder is fixed in the middle of the left side of the upper end of the detection table by a reinforcing rib plate, and the piston rod at the output end of the hydraulic cylinder is connected with the middle of the right pulling frame.

3. The uplift force detection device of an anchor according to claim 1, wherein: The first gear rack on the left and right sides of the left pulling frame is slidingly connected in the limiting frame, and the second gear rack on the left and right sides of the right pulling frame is slidingly connected in the limiting frame; The gear assembly comprises a driving gear engaged between the corresponding first and second gear racks, and the driving gear is movably connected with the notch groove by a rotating shaft fixed in the middle of the bottom.

4. The uplift detection device of claim 3, wherein: The L-shaped shearing assembly comprises an L-shaped shearing seat slidingly connected with the front and rear parts of the cross recess, and upper and lower connecting ear plates are arranged on the outer side end of the L-shaped shearing seat; The second rack inner wall is fixed with a connecting block, the connecting block extends from the inner side of the notch groove to the upper and lower two groups of connecting ear plates, and the third pin shaft on the inner side end of the connecting block is slidably connected to the second inclined groove on the connecting ear plate.

5. A method of detecting the uplift force of an anchoring body based on the device according to any one of claims 1 to 4, characterized in that: Specifically comprising the following steps: S1, placing both ends of the anchoring body assembly inside the clamping and locking assembly; S2, the left pulling frame pulls the anchoring body assembly, and the right pulling frame is also driven by the gear assembly to pull the anchoring body assembly synchronously, so that the coaxially locking and fixing of the anchoring body assembly is realized by the left and right symmetrical clamping and locking assemblies; S3, at the same time, the right pulling frame drives the L-shaped shearing assembly to tightly press the anchoring body assembly from the front and back sides, simulating the shearing force received by the anchoring body assembly in the installation state.

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