A pull-out tester

Abstract

This application relates to a pull-out testing apparatus, specifically in the field of anchor cable construction quality testing technology. The pull-out testing apparatus includes a support adjustment frame, a jack body spaced above the support adjustment frame, a fixing frame detachably connected to the piston rod end of the jack body, a fixing mechanism mounted on the fixing frame for fixing the free end of the anchor cable, a support mechanism positioned between the jack body and the top of the support adjustment frame for supporting the jack body, and a pressurizing device positioned on one side of the jack body for providing power to the jack body. The support adjustment frame has mounting holes through which the free end of the anchor cable can pass. The pressurizing device includes a hydraulic system, a testing module, a control module, and a display. This application facilitates the testing of the tensile strength of anchor cables and improves the testing efficiency for construction personnel.

Description

Technical Field

[0001] This application relates to the field of anchor cable construction quality testing technology, and in particular to a pull-out tester. Background Technology

[0002] Anchor bolts and anchor cables are the most basic components of support systems, mainly used for reinforcing and supporting slopes in mines, slopes, tunnels, dams, etc. Anchor cables are one type of anchor bolt. As a tension member that penetrates deep into the strata, an anchor bolt is connected to the engineering structure at one end and penetrates into the strata at the other end. The entire anchor bolt is divided into a free end and an anchored end. The free end refers to the area that transmits the tensile force at the anchor head to the anchored end, and its function is to apply prestress to the anchor bolt.

[0003] Currently, after the anchor cables are installed, a pull-out tester is needed to test the construction quality of the anchor cables. The pull-out tester includes a pressure device and a cylindrical fixing device. When using it, the free end of the anchor cable needs to be fixed by the fixing device. However, the fixing process requires repeated adjustments by the construction personnel. The entire fixing and disassembly process is quite cumbersome, which affects the testing efficiency. Summary of the Invention

[0004] To facilitate the testing of the tensile strength of anchor cables and improve the testing efficiency of construction personnel, this application provides a pull-out testing instrument.

[0005] This application provides a pull-out testing apparatus, which adopts the following technical solution:

[0006] A pull-out testing apparatus includes a support adjustment frame, a jack body spaced above the support adjustment frame, a fixing frame detachably connected to the piston rod end of the jack body, a fixing mechanism on the fixing frame for fixing the free end of an anchor cable, a support mechanism between the jack body and the top of the support adjustment frame for supporting the jack body, and a pressurizing device on one side of the jack body for providing power to the jack body; the support adjustment frame has mounting holes through which the free end of the anchor cable can pass.

[0007] By adopting the above technical solution, when conducting a pull-out test on the anchor cable using a pull-out tester, the construction personnel first place the support adjustment frame at the test position and adjust the pull-out direction of the anchor cable so that the anchor cable can be pulled out along the installation direction, thereby making the outer part of the anchor cable less susceptible to shearing and damage to the root concrete or soil. Next, the construction personnel abut the bottom of the fixing frame against the top of the support adjustment frame, and connect the jack body to the top of the support adjustment frame through the support mechanism to support the jack body. Then, the construction personnel insert the free end of the anchor cable through the installation hole and... The free end of the anchor cable is fixed by the fixing mechanism. Then, the pressurizing device is activated to apply power to the jack body, causing the piston rod of the jack body to pull the free end of the anchor cable upward. The tensile strength of the anchor cable is then tested and recorded through the pressurizing device. When construction personnel conduct construction quality inspections on the anchor cable, the fixing and supporting mechanisms enable the rapid installation, fixing, and disassembly of the jack body and the free end of the anchor cable. This simplifies the operation steps for construction personnel, making it easier to test the tensile strength of the anchor cable and improving the inspection efficiency.

[0008] Optionally, the fixing mechanism includes two rotating shafts rotatably connected to the fixing frame, a clamping block disposed between the two rotating shafts and corresponding to each of the two rotating shafts, a driving component disposed between the rotating shafts and the corresponding clamping blocks for driving the clamping blocks to move closer to or further away from the rotating shafts, a linkage component disposed between the two rotating shafts for synchronously driving the two rotating shafts to rotate, and a guide component disposed between the fixing frame and the clamping blocks for guiding the movement and providing reinforcement support for the clamping blocks;

[0009] The two rotating shafts are parallel and spaced apart, the two clamping blocks and the two driving components are symmetrically arranged, the free end of the anchor cable is located between the two clamping blocks, and an anti-detachment block is fixed to the free end of the anchor cable, which abuts against the top of the clamping block.

[0010] By adopting the above technical solution, when fixing the anchor cable using the fixing mechanism, the construction personnel first insert the free end of the anchor cable through the installation hole and place it between two clamping blocks. Then, the construction personnel drive the two rotating shafts to rotate synchronously through the linkage component. The two rotating shafts control the two drive components to move the two clamping blocks closer together, thereby fixing the free end of the anchor cable. At the same time, the anti-detachment block of the anchor cable abuts against the upper surface of the clamping block, thus fixing the free end of the anchor cable. Conversely, after the construction personnel have completed the inspection, they can rotate one of the rotating shafts in the opposite direction to release the fixing of the free end of the anchor cable. The linkage component allows the construction personnel to control the synchronous rotation and stop of the two rotating shafts simultaneously, making the operation more convenient. The drive component allows the two clamping blocks to move synchronously in opposite directions, further facilitating the construction personnel to quickly clamp and fix the free end of the anchor cable. The guide component not only prevents the clamping blocks from deviating during movement but also provides further support to the clamping blocks, improving their support stability.

[0011] Optionally, the drive assembly includes two threaded sleeves fixedly sleeved on the rotating shaft, two drive blocks respectively threaded to the outside of the two threaded sleeves, and two drive rods respectively hinged to the side of the two drive blocks near the clamping block.

[0012] The threaded sleeve is integrally formed with the rotating shaft, the threads of the two threaded sleeves are opposite, and the ends of the two drive rods away from the drive block are hinged to the clamping block.

[0013] By adopting the above technical solution, when the clamping block is moved by the drive component, the operator first rotates the rotating shaft, which drives the threaded sleeve to rotate. The threaded sleeve drives the two drive blocks to move synchronously in opposite directions along the length of the rotating shaft. Then, the two drive blocks can drive the two drive rods to rotate synchronously, so that the two drive rods drive the clamping block to move closer to or further away from the rotating shaft. The two drive rods and the rotating shaft form a stable triangular support, which makes the movement of the clamping block more stable.

[0014] Optionally, the guide assembly includes two support blocks symmetrically fixed on the fixed frame and two guide blocks respectively fixed on both sides of the clamping block;

[0015] The two support blocks are located on both sides of the clamping block, and the two guide blocks correspond one-to-one with the two support blocks. The guide blocks are provided with guide grooves, and the guide blocks slide within the corresponding guide grooves.

[0016] By adopting the above technical solution, the support block and guide block not only guide and limit the movement of the clamping block, making it less likely to deviate during the movement of the clamping block and making the movement of the clamping block more stable, but also the support block further supports the clamping block, reducing the stress concentration between the clamping block and the fixed frame, thereby improving the support stability of the fixed frame for the clamping block.

[0017] Optionally, the support mechanism includes multiple support claws hinged to the outer wall of the jack body, a support hook fixed at the end of the support claw away from its hinge, multiple support rings fixed to the top of the support adjustment frame and corresponding to the multiple support hooks, and an anti-disengagement component disposed between the support hook and the corresponding support ring to prevent the support hook from easily disengaging from the support ring; the multiple support claws are evenly distributed circumferentially along the outer wall of the jack body.

[0018] By adopting the above technical solution, when the jack body is supported by the support mechanism, the construction personnel first rotate the support claw to the side closer to the support ring. The support claw drives the support hook to insert into the support ring. Then, the construction personnel further fix the support hook with the anti-detachment component, so that the support hook is not easily detached from the support ring due to shaking or other factors, thereby improving the stability of the support mechanism. This enables the support mechanism to support and connect the jack body.

[0019] Optionally, the anti-detachment assembly includes an anti-detachment frame that is slidably connected to the top of the support adjustment frame along the height direction, an anti-detachment rod fixed on the anti-detachment frame, and a plurality of anti-detachment springs fixed below the anti-detachment frame;

[0020] The top of the support adjustment frame is provided with a sliding groove. The anti-detachment frame, anti-detachment rod and anti-detachment spring are all located in the sliding groove. The support hook is provided with an anti-detachment groove. The anti-detachment rod can be inserted into the anti-detachment groove. The anti-detachment spring is always in a compressed state.

[0021] By adopting the above technical solution, when further fixing the support hook with the anti-detachment component, the construction worker first presses down on the anti-detachment frame. The anti-detachment frame drives the anti-detachment spring and anti-detachment rod to move downward into the sliding groove. At this time, the anti-detachment spring is further compressed. Then, the construction worker inserts the support hook into the support ring. Subsequently, the construction worker releases the anti-detachment frame, which can then move upward under the action of the anti-detachment spring, while simultaneously driving the anti-detachment rod to insert into the anti-detachment groove, thereby achieving further anti-detachment fixation of the support hook, making it less likely for the support hook to detach from the support ring and improving the stability of the support mechanism.

[0022] Optionally, the anti-detachment rod is inclined on the side near the support claw, and the inclined direction of the anti-detachment rod is from bottom to top and towards the side away from the support claw. The side of the support hook away from the support claw is inclined to match the inclined surface of the anti-detachment rod.

[0023] By adopting the above technical solution, the inclined surface of the support hook and the inclined surface of the anti-detachment rod allow the construction worker to insert the support hook into the support ring without pressing down on the anti-detachment frame with their hands. They only need to apply force to push the support hook into the support ring. Under the action of the inclined surface, the support hook can drive the anti-detachment rod to move downward, making it easier to insert the support hook into the support ring.

[0024] Optionally, a pop-out component is also provided between the support ring and the support hook to allow the support hook to automatically pop out of the support ring.

[0025] By adopting the above technical solution, when the construction personnel release the fixed state of the anti-detachment component, the pop-out will automatically drive the anti-detachment hook to pop out into the support ring, thereby making it more convenient for the construction personnel to disconnect the jack body from the support adjustment frame.

[0026] Optionally, the pop-out assembly includes a support plate fixed on the side of the support ring near the center of the support adjustment frame, push plates spaced apart on the side of the support plate near the support ring, and a plurality of thrust springs fixed between the support plate and the push plates.

[0027] By adopting the above technical solution, when the support hook is inserted into the support ring, the support hook first drives the push plate to move towards the side closer to the support plate. Then, the push plate drives multiple thrust springs to compress towards the side closer to the support plate, thereby compressing the thrust springs. When the construction personnel release the fixed state of the anti-detachment component, the thrust spring can drive the push plate and the support hook to move away from the support plate, thereby causing the support hook to automatically pop out of the support ring.

[0028] Optionally, the pressurization device includes

[0029] The hydraulic system is connected to the jack body;

[0030] The detection module, connected to the jack body, is used to detect the tensile force of the jack body and send out a tensile force detection signal;

[0031] The control module, connected to the hydraulic system, is used to receive the tension value detection signal. When the tension value detection signal is lower than the preset tension value signal, it outputs a control signal to the hydraulic system. The hydraulic system then performs pressure compensation after receiving the control signal.

[0032] The display is connected to the control module.

[0033] By adopting the above technical solution, when the tensioning force decreases beyond the preset value during the pull-out test of the anchor cable, the control module will automatically control the hydraulic system to replenish the pressure on the jack body, thereby achieving the effect of stabilizing the pressure.

[0034] In summary, this application includes at least one of the following beneficial technical effects:

[0035] 1. When construction personnel conduct construction quality inspection on anchor cables, the jack body and the free end of the anchor cable can be quickly installed, fixed, and disassembled through the fixing and support mechanisms, which simplifies the operation steps of construction personnel, thereby facilitating the testing of the tensile strength of the anchor cable and improving the testing efficiency of construction personnel.

[0036] 2. The linkage component in the fixing mechanism allows construction personnel to simultaneously control the synchronous rotation and stop of two rotating shafts, making operation more convenient. The drive component enables the synchronous reverse movement of the two clamping blocks, further facilitating the quick clamping and fixing of the free end of the anchor cable. The guide component not only prevents the clamping blocks from tilting during movement, but also provides further support to the clamping blocks, improving their support stability.

[0037] 3. The support block and guide block not only guide and limit the movement of the clamping block, making it less likely to deviate during the movement of the clamping block and making the movement of the clamping block more stable, but also the support block further supports the clamping block, reducing the stress concentration between the clamping block and the fixed frame, thereby improving the support stability of the fixed frame for the clamping block.

[0038] 4. The anti-detachment component further secures the support hook, making it less susceptible to detachment from the support ring due to shaking or other factors, thereby improving the stability of the support mechanism. Furthermore, the inclined surfaces of the support hook and the anti-detachment rod allow the construction worker to insert the support hook into the support ring without pressing down on the anti-detachment frame. Instead, the worker only needs to apply force to push the support hook into the support ring, and the inclined surfaces will cause the support hook to move downwards, making it easier to insert the support hook into the support ring.

[0039] 5. When the construction personnel release the anti-detachment component from its fixed state, the pop-out component will automatically drive the anti-detachment hook to pop out into the support ring, making it easier for the construction personnel to disconnect the jack body from the support adjustment frame;

[0040] 6. When the pressure device performs a pull-out test on the anchor cable, if the tensile force decreases beyond the preset value, the control module will automatically control the hydraulic system to apply additional pressure to the jack body, thereby achieving a pressure stabilization effect. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the pull-out testing apparatus in the embodiments of this application;

[0042] Figure 2 This is a partial sectional view of the pull-out testing apparatus;

[0043] Figure 3 It means Figure 2 A magnified schematic diagram of part A in the middle section;

[0044] Figure 4 This is a schematic diagram showing a partial structure of the fixing mechanism;

[0045] Figure 5 This is a partial structural diagram illustrating the connection process between the support hook and the support ring in the support mechanism;

[0046] Figure 6This is a partial sectional view showing the support mechanism.

[0047] Explanation of reference numerals in the attached drawings: 1. Support and adjustment frame; 11. Support leg; 12. Adjusting plate; 13. Adjusting block; 14. Sliding groove; 2. Jack body; 3. Fixing frame; 4. Connecting assembly; 41. Connecting flange; 42. High-strength bolt; 5. Fixing mechanism; 51. Rotating shaft; 52. Clamping block; 53. Anti-detachment block; 54. Drive assembly; 541. Threaded sleeve; 542. Drive block; 543. Drive rod; 55. Linkage assembly; 551. Sprocket; 55 2. Chain; 553. Handwheel; 56. Guide assembly; 561. Support block; 5611. Guide groove; 562. Guide block; 6. Anchor cable; 7. Support mechanism; 71. Support claw; 72. Support hook; 721. Anti-detachment groove; 73. Support ring; 74. Anti-detachment assembly; 741. Anti-detachment frame; 742. Anti-detachment rod; 743. Anti-detachment spring; 75. Pop-out assembly; 751. Support plate; 752. Push plate; 753. Thrust spring; 8. Pressurization device. Detailed Implementation

[0048] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0049] This application discloses a pull-out testing apparatus. (Refer to...) Figure 1 and Figure 2 The pull-out testing apparatus includes a support and adjustment frame 1. A jack body 2 is spaced above the support and adjustment frame 1. A fixing frame 3 is provided at the piston rod end of the jack body 2. A connecting assembly 4 is provided between the fixing frame 3 and the piston rod end of the jack body 2, connecting the fixing frame 3 and the piston rod end of the jack body 2. A fixing mechanism 5 is provided inside the fixing frame 3, used to fix the free end of the anchor cable 6. A support mechanism 7 is provided between the top of the jack body 2 and the support and adjustment frame 1, used to support the jack body 2. A pressurizing device 8 is also provided on one side of the jack body 2, used to provide power to the jack body 2.

[0050] Reference Figure 1 The support adjustment frame 1 includes a support leg 11, with an adjustment plate 12 hinged above the support leg 11. Mounting holes are provided on the top of both the support leg 11 and the adjustment plate 12, through which the free end of the anchor cable 6 can pass. An adjustment block 13 is provided between the top of the support leg 11 and the adjustment plate 12. The adjustment block 13 is a wedge-shaped block, with its two inclined surfaces abutting against the top of the support leg 11 and the adjustment plate 12, respectively.

[0051] Reference Figure 1The pressurizing device 8 includes a hydraulic system, a detection module, a control module, and a display. The hydraulic system is connected to the jack body 2. The detection module includes a tensile force sensor connected to the jack body 2, used to detect the tensile force of the jack body 2 and send a tensile force detection signal. The control module includes a controller connected to the hydraulic system, used to receive the tensile force detection signal. When the tensile force detection signal is lower than a preset tensile force signal, the controller outputs a control signal to the hydraulic system, which then applies additional pressure to the jack body 2. The display is connected to the controller and used to display the tensile force value.

[0052] When conducting a pull-out test on anchor cable 6 using a pull-out testing machine, the construction personnel first place the support adjustment frame 1 at the test position. Then, they rotate the adjusting plate 12 to adjust the direction of the pull-out force on anchor cable 6, ensuring it aligns with its installation direction. Next, they move the adjusting block 13, bringing its two inclined surfaces abutting between the top of the support leg 11 and the adjusting plate 12. This allows the anchor cable 6 to be pulled out along its installation direction, preventing shear damage to the root concrete or soil on the outer side of the anchor cable 6 and improving the accuracy of the pull-out force measurement. Finally, the construction personnel abut the bottom of the fixing frame 3 against the top of the support adjustment frame 1. The jack body 2 is connected to the top of the support adjustment frame 1 via the support mechanism 7, thereby supporting the jack body 2. Then, the construction personnel pass the free end of the anchor cable 6 through the installation hole and fix the free end of the anchor cable 6 via the fixing mechanism 5. Subsequently, the construction personnel start the pressurizing device 8, which applies power to the jack body 2, causing the piston rod of the jack body 2 to pull the free end of the anchor cable 6 upward. The tensile strength of the anchor cable 6 is tested and recorded by the pressurizing device 8. At the same time, when the pressurizing device 8 performs a pull-out test on the anchor cable 6, if the tensile force decreases beyond the preset value, the controller will automatically control the hydraulic system to replenish the pressure on the jack body 2, thereby achieving the effect of stabilizing the pressure.

[0053] Reference Figure 1 and Figure 2 The connecting assembly 4 includes two connecting flanges 41 that are respectively fixed to the piston rod ends of the fixed frame 3 and the jack body 2 on one side close to each other. The two connecting flanges 41 abut against each other and are connected by a plurality of high-strength bolts 42.

[0054] Reference Figure 1 and Figure 2The fixing mechanism 5 includes two rotating shafts 51 rotatably connected to the fixing frame 3. The two rotating shafts 51 are parallel and spaced apart. Two clamping blocks 52 are arranged between the two rotating shafts 51, with each rotating shaft 51 corresponding to one of the two clamping blocks 52. The two clamping blocks 52 are symmetrically arranged, and the free end of the anchor cable 6 is located between the two clamping blocks 52. An anti-detachment block 53 is fixed to the free end of the anchor cable 6, and the anti-detachment block 53 abuts against the top of the clamping block 52. A driving assembly 54 is arranged between the rotating shaft 51 and the corresponding clamping block 52. The driving assembly 54 is used to drive the clamping block 52 to move closer to or further away from the rotating shaft 51, and the two driving assemblies 54 are also symmetrically arranged. A linkage assembly 55 is arranged between the two rotating shafts 51, which is used to synchronously drive the two rotating shafts 51 to rotate. A guide assembly 56 is also arranged between the fixing frame 3 and the clamping block 52, which is used to guide the movement of the clamping block 52 and provide reinforcement support.

[0055] Reference Figure 2 and Figure 3 The drive assembly 54 includes two threaded sleeves 541 fixedly sleeved on the rotating shaft 51. The threaded sleeves 541 are integrally formed with the rotating shaft 51, and the threads of the two threaded sleeves 541 are opposite in direction. Drive blocks 542 are threadedly connected to the outer sides of the two threaded sleeves 541, and drive rods 543 are hinged to the side of the two drive blocks 542 near the clamping block 52. The ends of the two drive rods 543 away from the drive blocks 542 are hinged to the clamping block 52.

[0056] Reference Figure 2 and Figure 3 The guide assembly 56 includes two symmetrically fixed support blocks 561 on the fixed frame 3. The two support blocks 561 are located on both sides of the clamping block 52 along its length direction. Guide blocks 562 are fixed on both sides of the clamping block 52 along its length direction. The two guide blocks 562 correspond one-to-one with the two support blocks 561. The guide blocks 562 are provided with guide grooves 5611. The guide blocks 562 slide within the corresponding guide grooves 5611. The support blocks 561 and guide blocks 562 not only guide and limit the movement of the clamping block 52, making it less likely for the clamping block 52 to deviate during movement, but also the support blocks 561 further support the clamping block 52, reducing the stress concentration between the clamping block 52 and the fixed frame 3, and improving the support stability of the fixed frame 3 for the clamping block 52.

[0057] Reference Figure 2 and Figure 4 The linkage component 55 includes two sprockets 551 that are respectively fixedly sleeved on two rotating shafts 51 and a chain 552 that meshes with the two sprockets 551. The linkage component 55 can also be configured as a timing belt and a timing pulley. The linkage component 55 also includes a handwheel 553 that is fixedly sleeved on one end of the rotating shaft 51.

[0058] When fixing the anchor cable 6 using the fixing mechanism 5, the construction worker first inserts the free end of the anchor cable 6 through the installation hole and places the free end of the anchor cable 6 between the two clamping blocks 52. Then, the construction worker rotates one of the handwheels 553, which drives the rotating shaft 51 to rotate. The two rotating shafts 51 then rotate synchronously under the action of the sprocket 551 and the chain 552, thus achieving synchronous movement of the two rotating shafts 51. Next, the two rotating shafts 51 drive the threaded sleeve 541 to rotate, and the threaded sleeve 541 drives the two driving blocks 542 to rotate along the rotating shaft. When the length direction of 51 moves synchronously in opposite directions, the two drive blocks 542 on the same rotating shaft 51 can drive the two drive rods 543 to rotate synchronously. As a result, the two drive rods 543 drive the clamping block 52 to move away from the rotating shaft 51, so that the two clamping blocks 52 move closer to each other. At the same time, the anti-detachment block 53 of the anchor cable 6 abuts against the upper surface of the clamping block 52, thus fixing the free end of the anchor cable 6. Conversely, after the construction personnel have completed the inspection, they can turn one of the handwheels 553 in the opposite direction to release the fixation of the free end of the anchor cable 6.

[0059] Reference Figure 5 and Figure 6 The support mechanism 7 includes multiple support claws 71 hinged to the outer wall of the jack body 2. These support claws 71 are evenly distributed circumferentially along the outer wall of the jack body 2, ensuring uniform force distribution around the jack body 2. A support hook 72 is fixed to one end of each support claw 71 away from its hinge point. Multiple support rings 73 are fixed to the top of the support adjustment frame 1, with each support ring 73 corresponding to a support hook 72. An anti-detachment component 74 is provided between the support hook and the corresponding support ring 73 to prevent the support hook 72 from easily detaching from the support ring 73. A pop-out component 75 is also provided between the support ring 73 and the support hook 72. This pop-out component 75 automatically pops the support hook 72 out of the support ring 73, so that when the operator releases the anti-detachment component 74, the anti-detachment component 74 automatically pushes the anti-detachment hook out of the support ring 73, making it easier for the operator to disconnect the jack body 2 from the support adjustment frame 1.

[0060] Reference Figure 5 and Figure 6The anti-detachment component 74 includes an anti-detachment frame 741 that is slidably connected to the top of the support adjustment frame 1 along the height direction. An anti-detachment rod 742 is fixed on the anti-detachment frame 741. A plurality of anti-detachment springs 743 are fixed below the anti-detachment frame 741. The anti-detachment springs 743 are always in a compressed state. A sliding groove 14 is opened on the top of the support adjustment frame 1. The anti-detachment frame 741, the anti-detachment rod 742 and the anti-detachment springs 743 are all located in the sliding groove 14, and the bottom of the anti-detachment springs 743 is fixedly connected to the bottom wall of the sliding groove 14. The support hook 72 has an anti-detachment groove 721, and the anti-detachment rod 742 can be inserted into the anti-detachment groove 721. The side of the anti-detachment rod 742 near the support claw 71 is set with an incline. The inclination direction of the incline of the anti-detachment rod 742 is from bottom to top and towards the side away from the support claw 71. The side of the support hook 72 away from the support claw 71 is set with an incline that matches the incline of the anti-detachment rod 742. The incline settings of the support hook 72 and the anti-detachment rod 742 are designed so that when the construction personnel insert the support hook 72 into the support ring 73, the support hook 72 can drive the anti-detachment rod 742 to move downward under the action of the incline, thereby making it easier for the support hook 72 to be inserted into the support ring 73.

[0061] Reference Figure 6 The pop-out component 75 includes a support plate 751 fixed on the side of the support ring 73 near the center of the support adjustment frame 1. Push plates 752 are arranged parallel to and spaced apart on the side of the support plate 751 near the support ring 73. Multiple thrust springs 753 are fixed between the support plate 751 and the push plates 752.

[0062] When the jack body 2 is supported by the support mechanism 7, the construction worker first rotates the support claw 71 towards the side closer to the support ring 73. The support claw 71 drives the support hook 72 to insert into the support ring 73. When the inclined surface of the support hook 72 abuts against the inclined surface of the anti-detachment rod 742, the worker continues to push the support hook 72 towards the push plate 752. Under the action of the inclined surfaces of the support hook 72 and the anti-detachment rod 742, the support hook 72 drives the anti-detachment rod 742 to move downward. The anti-detachment rod 742 and the anti-detachment frame 741 drive the anti-detachment spring 743 to move downward into the sliding groove 14. At this time, the anti-detachment spring 743 is further compressed. Then, the worker continues to push the support hook 72 towards the push plate 752. When the anti-detachment rod 742 moves to align with the anti-detachment groove 721, the worker continues to push the support hook 72 towards the push plate 752. Then, the anti-detachment frame 741 can move upward under the action of the anti-detachment spring 743, so that the anti-detachment rod 742 can be inserted into the anti-detachment groove 721, thereby further preventing the support hook 72 from detaching and making it less likely for the support hook 72 to be detached from the support ring 73 due to shaking or other factors. When the construction personnel need to disconnect the connection between the jack body 2 and the support adjustment frame 1, the construction personnel first press down on the anti-detachment frame 741. The anti-detachment frame 741 drives the anti-detachment rod 742 to move downward and detach from the anti-detachment groove 721. Then, the thrust spring 753 can drive the push plate 752 and the support hook 72 to move away from the support plate 751, so that the support hook 72 automatically pops out into the support ring 73, thereby disconnecting the connection between the jack body 2 and the support adjustment frame 1.

[0063] The implementation principle of a pull-out testing instrument in this application embodiment is as follows: When conducting a pull-out test on the anchor cable 6 using the pull-out testing instrument, the construction personnel first place the support adjustment frame 1 at the test position and adjust the pull-out direction of the anchor cable 6 through the support adjustment frame 1 so that the anchor cable 6 can be pulled out along the installation direction of the anchor cable 6. Then, the construction personnel abut the bottom of the fixing frame 3 against the top of the support adjustment frame 1 and connect it to the support ring 73 through the support hook 72, thereby connecting the jack body 2 to the top of the support adjustment frame 1 and supporting the jack body 2. Subsequently, the construction personnel insert the free end of the anchor cable 6 through the installation hole and rotate the handwheel 553. The handwheel 553 controls the fixing... The fixing mechanism 5 secures the free end of the anchor cable 6. Then, the construction personnel adjust the preset tension value of the hydraulic system and start the hydraulic system. The pressurizing device 8 applies power to the jack body 2, causing the piston rod of the jack body 2 to pull the free end of the anchor cable 6 upward. The tensile strength of the anchor cable 6 can be tested and recorded through the pressurizing device 8. When the construction personnel inspect the construction quality of the anchor cable 6, the fixing mechanism 5 and the supporting mechanism 7 can quickly install, fix, and disassemble the jack body 2 and the free end of the anchor cable 6, simplifying the operation steps of the construction personnel. This makes it easier for the construction personnel to test the tensile strength of the anchor cable 6 and improves the testing efficiency of the construction personnel.

[0064] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pull-out testing apparatus, characterized in that: The jack includes a support adjustment frame (1), a jack body (2) spaced above the support adjustment frame (1), a fixing frame (3) detachably connected to the piston rod end of the jack body (2), a fixing mechanism (5) on the fixing frame (3) for fixing the free end of the anchor cable (6), a support mechanism (7) between the top of the jack body (2) and the support adjustment frame (1) for supporting the jack body (2), and a pressurizing device (8) on one side of the jack body (2) for providing power to the jack body (2); the support adjustment frame (1) has an installation hole through which the free end of the anchor cable (6) can pass; The fixing mechanism (5) includes two rotating shafts (51) rotatably connected to the fixing frame (3), a clamping block (52) disposed between the two rotating shafts (51) and corresponding to the two rotating shafts (51) one by one, a driving component (54) disposed between the rotating shaft (51) and the corresponding clamping block (52) for driving the clamping block (52) to move closer to or away from the rotating shaft (51), a linkage component (55) disposed between the two rotating shafts (51) for synchronously driving the two rotating shafts (51) to rotate, and a guide component (56) disposed between the fixing frame (3) and the clamping block (52) for moving and reinforcing the clamping block (52); The two rotating shafts (51) are parallel and spaced apart, the two clamping blocks (52) and the two driving components (54) are symmetrically arranged, the free end of the anchor cable (6) is located between the two clamping blocks (52), and the free end of the anchor cable (6) is fixed with an anti-detachment block (53), which abuts against the top of the clamping block (52).

2. The pull-out testing apparatus according to claim 1, characterized in that: The drive assembly (54) includes two threaded sleeves (541) fixedly sleeved on the rotating shaft (51), two drive blocks (542) respectively threaded to the outside of the two threaded sleeves (541), and two drive rods (543) respectively hinged to the side of the two drive blocks (542) near the clamping block (52). The threaded sleeve (541) is integrally formed with the rotating shaft (51), the threads of the two threaded sleeves (541) are opposite, and the ends of the two drive rods (543) away from the drive block (542) are hinged to the clamping block (52).

3. The pull-out testing apparatus according to claim 1, characterized in that: The guide assembly (56) includes two support blocks (561) symmetrically fixed on the fixed frame (3) and two guide blocks (562) respectively fixed on both sides of the clamping block (52); The two support blocks (561) are located on both sides of the clamping block (52), and the two guide blocks (562) correspond one-to-one with the two support blocks (561). The guide blocks (562) are provided with guide grooves (5611), and the guide blocks (562) slide in the corresponding guide grooves (5611).

4. A pull-out testing apparatus according to claim 1, characterized in that: The support mechanism (7) includes multiple support claws (71) hinged to the outer side wall of the jack body (2), a support hook (72) fixed at the end of the support claw (71) away from its hinge, multiple support rings (73) fixed on the top of the support adjustment frame (1) and corresponding to the multiple support hooks (72), and an anti-detachment component (74) set between the support hook and the corresponding support ring (73) to prevent the support hook (72) from easily detaching from the support ring (73); the multiple support claws (71) are evenly distributed along the circumference of the outer side wall of the jack body (2).

5. A pull-out testing apparatus according to claim 4, characterized in that: The anti-detachment assembly (74) includes an anti-detachment frame (741) that is slidably connected to the top of the support adjustment frame (1) along the height direction, an anti-detachment rod (742) fixed on the anti-detachment frame (741), and a plurality of anti-detachment springs (743) fixed below the anti-detachment frame (741); The top of the support adjustment frame (1) is provided with a sliding groove (14). The anti-detachment frame (741), anti-detachment rod (742) and anti-detachment spring (743) are all located in the sliding groove (14). The support hook (72) is provided with an anti-detachment groove (721). The anti-detachment rod (742) can be inserted into the anti-detachment groove (721). The anti-detachment spring (743) is always in a compressed state.

6. A pull-out testing apparatus according to claim 5, characterized in that: The anti-detachment rod (742) is inclined on the side near the support claw (71), and the inclined direction of the anti-detachment rod (742) is from bottom to top and towards the side away from the support claw (71). The support hook (72) is inclined on the side away from the support claw (71) to match the inclined surface of the anti-detachment rod (742).

7. A pull-out testing apparatus according to claim 4, characterized in that: An ejection assembly (75) is also provided between the support ring (73) and the support hook (72) for automatically ejecting the support hook (72) from the support ring (73).

8. A pull-out testing apparatus according to claim 7, characterized in that: The pop-out assembly (75) includes a support plate (751) fixed on the side of the support ring (73) near the center of the support adjustment frame (1), push plates (752) spaced apart on the side of the support plate (751) near the support ring (73), and a plurality of thrust springs (753) fixed between the support plate (751) and the push plates (752).

9. A pull-out testing apparatus according to any one of claims 1-8, characterized in that: The pressurizing device (8) includes The hydraulic system is connected to the jack body (2); The detection module is connected to the jack body (2) and is used to detect the tensile force of the jack body (2) and send out a tensile force detection signal. The control module, connected to the hydraulic system, is used to receive the tension value detection signal. When the tension value detection signal is lower than the preset tension value signal, it outputs a control signal to the hydraulic system. The hydraulic system then performs pressure compensation after receiving the control signal. The display is connected to the control module.

Images