A device for detecting pull-out resistance of an insert

Abstract

The application discloses an embedded part anti-pulling-out force detection device and relates to the technical field of anti-pulling-out force detection devices.The device comprises a base frame and a pulling column arranged on the base frame, and an end-direction clamping and moving mechanism is arranged on the pulling column and used for adaptively clamping and limiting a hanging bolt according to the size of the hanging bolt.The end-direction clamping and moving mechanism comprises a sub-embedding seat, and the hanging bolt comprises a bolt cap.The sub-embedding seat is provided with a semicircular groove and an axial notch for accommodating the bolt cap, and the axial notch is communicated with the semicircular groove.Two sub-embedding seats are arranged on the two sides of the bolt cap and are configured to be capable of moving towards each other so that the bottom wall of the semicircular groove abuts against the bolt cap.The sub-embedding seat can rotate around its own axis so that the side wall of the semicircular groove is located below the bolt cap.The end-direction clamping and moving mechanism can adapt to different sizes of pre-buried hanging bolts, and the detection device does not need to frequently replace clamps, the adaptability of the detection device to different specifications of pre-buried hanging bolts is remarkably improved, the detection efficiency is improved, and the additional time and labor cost caused by replacement of the clamps are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of anti-pull-out force detection devices, in particular to an embedded part anti-pull-out force detection device. BACKGROUND

[0002] Pull-out force detection refers to testing the firmness of the connection between an embedded part and a base material by applying a pulling force, i.e., measuring the force required to pull the embedded part out of the base material. This detection process is crucial for evaluating the connection strength of the embedded part, especially in application scenarios involving high strength, high precision, or high safety requirements.

[0003] Chinese patent (publication number: CN110296891B), the scheme specifically includes a base, the upper end of the base is fixedly connected with a support frame, the upper end of the support frame is fixedly connected with a motor, the rotating shaft end of the motor is fixedly connected with a reel, the inside of the reel is wound with a steel wire rope, the lower end of the steel wire rope is fixedly connected with a pull force detector. The automobile connecting piece riveting pull-out force test device drives the steel wire rope to move through the motor, and pulls the pull force detector through the steel wire rope, the pull force detector drives the connecting rod to move, the connecting rod drives the support bar to move, the support bar drives the designed sleeve rope to move, the connecting piece on the connecting bar is pulled through the sleeve rope, the pull-out of the connecting piece and the connecting bar is realized, and the connecting piece at the bottom is installed through the cooperation of the threaded rod, the clamp and the fixed sleeve, which is convenient and fast, and facilitates the pull-out force test work.

[0004] In the process of modern building industrialization, prefabricated concrete components have been widely used due to their advantages of high efficiency, environmental protection, controllable quality, etc. The embedded part (such as a hanging nail) in the prefabricated concrete component is a key component for realizing component hoisting, installation and structural connection, and its anti-pull-out force performance is directly related to the safety and reliability of the component. However, in the anti-pull-out force detection of the embedded part in prefabricated concrete, the existing technology faces many challenges.

[0005] Taking the hanging nail in prefabricated concrete as an example, a duckbill buckle lifting appliance that is adapted to the size of the suspended ceiling is usually used in the hoisting process. Although this lifting appliance shows good adaptability and stability in hoisting operations, it has obvious limitations in anti-pull-out force detection. The existing detection clamp cannot adapt to different sizes of hanging nails, and if the duckbill buckle lifting appliance is used as a detection clamp, the adapted duckbill buckle lifting appliance needs to be frequently replaced for different sizes of hanging nails. This process is not only tedious and time-consuming, but also may increase the workload of the operator, thereby affecting the efficiency and accuracy of the embedded part strength detection. Therefore, an embedded part anti-pull-out force detection device is proposed. SUMMARY

[0006] The embedded part anti-pulling force detection device has the advantages of accurately clamping nail caps with different diameters and improving detection efficiency, and solves the problem of frequent replacement of adaptive clamps for different sizes of hanging nails.

[0007] To achieve the above object, the present application provides the following technical scheme: an embedded part anti-pulling force detection device, comprising a base frame and a pulling column arranged thereon, the base frame is provided with a power system for controlling the pulling column and a force sensor for measuring the pulling force value applied to the hanging nail, characterized in that: an end-to-end clamping mechanism is arranged on the pulling column.

[0008] The end-to-end clamping mechanism comprises a sub-embedding seat, and the hanging nail comprises a nail cap.

[0009] The sub-embedding seat is provided with a semi-arc groove and an axial notch for accommodating the nail cap, and the axial notch is in communication with the semi-arc groove.

[0010] Two sub-embedding seats are arranged on both sides of the nail cap and are configured to move towards each other so that the bottom wall of the semi-arc groove abuts against the nail cap; the sub-embedding seat can rotate around its own axis to make the side wall of the semi-arc groove below the nail cap.

[0011] Further, the end-to-end clamping mechanism further comprises a transverse base plate arranged below the pulling column, the transverse base plate is fixedly connected with a horizontally arranged guide column, two groups of internal spline barrels are slidably arranged on the guide column, the guide column comprises a plurality of axial grooves which are integrally formed and allow the two groups of internal spline barrels to slide horizontally.

[0012] The transverse base plate is provided with a translation self-linking assembly for driving the internal spline barrels to move horizontally and changing the relative position of the semi-arc groove and the nail cap after the sub-embedding seat and the hanging nail are in contact.

[0013] Further, the translation self-linking assembly comprises an end position seat fixedly connected to the transverse base plate, a three-jaw positioning seat is rotatably arranged on the end position seat, a central shaft is rotatably arranged on the end position seat, and a motor is fixedly connected to the end position seat for driving the central shaft to rotate freely around the horizontal axis, a central worm is rotatably arranged on the three-jaw positioning seat, and the central worm is coaxially fixed with the central shaft.

[0014] The central shaft is rotatably arranged on the three-jaw positioning seat, a plurality of side position worm gears are meshingly connected to the central worm, and a plurality of the side position worm gears are rotatably arranged on the three-jaw positioning seat, a same-position rod is coaxially fixed on the side position worm gear.

[0015] A driving wheel is rotatably arranged on one side of the internal spline barrel facing the three-jaw positioning seat, a connecting rod is rotatably arranged on the driving wheel, and one end of the connecting rod away from the driving wheel is rotatably arranged on one end of the same-position rod away from the side position worm gear.

[0016] The end position seat is provided with an internal pressure resistance assembly for limiting rotation of the three-jaw positioning seat.

[0017] Further, a stand is arranged on the inner spline cylinder, the sub-socket seat is pivotally arranged on the stand, and a driven wheel is also pivotally arranged on the stand and coaxially fixed between the sub-socket seat.

[0018] The stand is provided with a belt for driving the driven wheel and the driving wheel.

[0019] Further, the internal pressure resistance assembly comprises a plurality of internal resistance blocks arranged on the end position seat, the plurality of internal resistance blocks are arranged in an annular array on the end position seat, the end position seat is provided with a column cavity groove for sliding connection of the plurality of internal resistance blocks at positions corresponding to the plurality of internal resistance blocks, and the internal resistance blocks abut against the three-jaw positioning seat.

[0020] Further, a bearing spring is arranged in the column cavity groove, and two ends of the bearing spring are fixedly connected to the end position seat and the internal resistance block, respectively.

[0021] Further, the plurality of bearing springs are in a compressed deformation state.

[0022] Further, the three-jaw positioning seat comprises an integrally formed outer extension part, and the outer extension part corresponds to the deflection direction of the co-site rod.

[0023] Further, in the initial state, the co-site rod abuts against the outer extension part, and the axial notch is below the relative position of the sub-socket seat.

[0024] Further, a hollow cylinder is fixedly connected to the pull column, a spline column is arranged below the hollow cylinder, and a spline groove is arranged in the hollow cylinder and slidably penetrated by the spline column.

[0025] The spline column is fixedly connected between the spline column and the transverse base plate, one end of the spline column away from the transverse base plate is fixedly connected with a guide disc, and the outer circumferential surface of the guide disc is in sliding contact with the inner wall of the hollow cylinder.

[0026] A locking bolt is threadedly connected to the hollow cylinder, and a threaded hole is arranged in the guide disc and corresponds to the position of the locking bolt.

[0027] Compared with the prior art, the present application has the following beneficial effects:

[0028] 1. The end-to-end clamping mechanism can adapt to different sizes of embedded lifting studs, and the half-arc groove and axial notch structure on the item embedding seat can cooperate with the driving of the translation self-linking assembly to accurately clamp stud caps of different diameters without frequent replacement of clamps, significantly improving the adaptability of the detection device to different specifications of embedded lifting studs, thereby improving the detection efficiency and reducing the additional time and labor cost caused by replacing clamps.

[0029] 2. The pull-out force detection process of the lifting stud can simulate the stress condition of the embedded lifting stud in the actual lifting and use process, thereby the quality problems of the lifting stud, such as material defects and manufacturing defects, can be found in advance, so that potential safety accidents can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0031] Figure 2 It is a schematic diagram of the component where the transverse base plate is located;

[0032] Figure 3 It is a schematic diagram of the component where the guide column is located;

[0033] Figure 4 It is a schematic diagram of the component where the three-jaw positioning seat is located;

[0034] Figure 5 It is a schematic diagram of the component where the spline column is located; Figure 4 It is an enlarged view of A in the present application;

[0035] Figure 6 It is a schematic diagram of the component where the end seat is located;

[0036] Figure 7 It is a schematic diagram of the component where the end seat is located;

[0037] Figure 8 It is an enlarged view of B in the present application; Figure 7 It is an enlarged view of B in the present application;

[0038] Figure 9 It is a schematic diagram of the component where the item embedding seat is located;

[0039] Figure 10 It is a schematic diagram of the component where the item embedding seat is located;

[0040] In the figure: 1, base frame; 2, power system; 3, pull column; 4, hollow cylinder; 5, spline column; 6, guide position disc; 7, transverse base plate; 8, guide column; 801, axial groove; 9, three-jaw positioning seat; 901, overhanging part; 10, end position seat; 11, central shaft; 12, central worm; 13, side position worm wheel; 14, same position rod; 15, connecting rod; 16, driving wheel; 17, inner spline cylinder; 18, stand; 19, column cavity groove; 20, abutting spring; 21, inner abutting block; 22, driven wheel; 23, sub-embedded port seat; 231, semicircular groove; 232, axial notch; 24, hanging pin; 241, pin cap; 25, locking bolt. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0042] Please refer to Figures 1 to 10 , the present application provides a kind of embedded piece anti-pulling force detection device, including base frame 1 and the pull column 3 of setting on it, base frame 1 is equipped with the power system 2 for controlling pull column 3 and the force sensor of measuring the pulling force value applied to hanging pin 24, pull column 3 is equipped with end direction clamping mechanism for self-adapting the size of hanging pin 24 to be connected to limit hanging pin 24.

[0043] End direction clamping mechanism includes transverse base plate 7 arranged below pull column 3, transverse base plate 7 is fixedly connected with horizontally arranged guide column 8, two groups of inner spline cylinder 17 are slidably arranged on guide column 8, guide column 8 includes a plurality of axial grooves 801 integrally formed and allowing two groups of inner spline cylinder 17 to slide horizontally, and one group of sub-embedded port seat 23 for limiting the position of hanging pin 24 is arranged below two groups of inner spline cylinder 17. That is, the protrusions on the inner wall of inner spline cylinder 17 cooperate with axial grooves 801 to prevent guide column 8 from rotating relative to inner spline cylinder 17.

[0044] Hanging pin 24 includes integrally formed pin cap 241, sub-embedded port seat 23 includes integrally formed semicircular groove 231 for accommodating pin cap 241, as Figure 10 shown, the side end position of sub-embedded port seat 23 provided with semicircular groove 231 also includes integrally formed axial notch 232.

[0045] Transverse base plate 7 is provided with a translation self-linking assembly that drives inner spline cylinder 17 to move horizontally and changes the relative position of semicircular groove 231 and pin cap 241 after sub-embedded port seat 23 and hanging pin 24 come into contact.

[0046] AsFigures 1-3 As shown, when the pull-out force of the lifting bolt 24 embedded in the concrete prefabricated part is detected, the base frame 1 is stably placed on the concrete prefabricated part, and the position of the lifting bolt 24 is directly below the pull column 3. By adjusting the horizontal height of the transverse base plate 7, the sub-socket seat 23 arranged on the inner spline barrel 17 is caused to be located on one side of the bolt cap 241 in the lifting bolt 24.

[0047] At the same time, the inner spline barrel 17 is driven to move in the horizontal direction by the translation self-linking assembly, so that the inner spline barrel 17 and the sub-socket seat 23 move towards the bolt cap 241. The transverse base plate 7 is provided with two sets of translation self-linking assemblies, and the two sets of translation self-linking assemblies drive the corresponding sub-socket seat 23 to move towards the bolt cap 241 until the bolt cap 241 passes through the position of the axial gap 232 and contacts the bottom wall of the semi-arc groove 231.

[0048] At this time, since the bolt cap 241 contacts the bottom wall of the semi-arc groove 231, the sub-socket seat 23 cannot continue to move in the horizontal direction under the limitation of the bolt cap 241, and at this time the inner spline barrel 17 also cannot continue to move in the horizontal direction towards the side of the bolt cap 241. Therefore, as the translation self-linking assembly continues to operate, the sub-socket seat 23 is driven to rotate a certain angle around its horizontal axis, thereby changing the position of the axial gap 232, i.e. changing the relative position between the bolt cap 241 and the semi-arc groove 231, so that the side wall of the semi-arc groove 231 is located below the bolt cap 241, and the upward pulling force can be applied to the lifting bolt 24 through the sub-socket seat 23.

[0049] Subsequently, the power system 2 applies an upward pulling force to the pull column 3, and finally applies the pulling force to the sub-socket seat 23 through the transverse base plate 7, the guide column 8 and the driving wheel 16, and applies the pulling force to the bolt cap 241 through the sub-socket seat 23, thereby realizing the detection process of the pull-out force of the lifting bolt 24. During the detection process, since the bolt cap 241 is located on both sides of the semi-arc groove 231 in the horizontal direction and does not correspond to the axial gap 232, when the upward pulling force is applied to the bolt cap 241 through the sub-socket seat 23, the bolt cap 241 is in contact with the side wall of the semi-arc groove 231, thereby transmitting the pulling force applied by the power system 2 to the bolt cap 241 through the outer peripheral wall, and measuring the size of the pulling force applied to the bolt cap 241 by the power system 2 arranged on the base frame 1 in real time.

[0050] In one of the more preferred embodiments, the translation self-engaging assembly comprises an end seat 10 fixedly connected on the transverse base plate 7, a three-jaw positioning seat 9 fixedly and rotatably mounted on the end seat 10, a central shaft 11 fixedly and rotatably mounted on the end seat 10, and a motor fixedly connected on the end seat 10 for driving the central shaft 11 to rotate freely around the horizontal axis, a central worm 12 fixedly and rotatably mounted on the three-jaw positioning seat 9, and the central worm 12 is coaxially fixed between the central shaft 11.

[0051] The central shaft 11 is fixedly and rotatably mounted on the three-jaw positioning seat 9, the central worm 12 is meshingly connected with a plurality of side worm gears 13, the plurality of side worm gears 13 are fixedly and rotatably mounted on the three-jaw positioning seat 9, and the side worm gears 13 are coaxially fixed with the same-pole rods 14.

[0052] The inner spline barrel 17 is fixedly and rotatably provided with a driving wheel 16 on the side facing the three-jaw positioning seat 9, the driving wheel 16 is fixedly and rotatably provided with a connecting rod 15, the connecting rod 15 is fixedly and rotatably mounted on the same-pole rod 14 away from the side worm gear 13, and the end seat 10 is provided with an internal pressure resistance assembly for limiting the rotation of the three-jaw positioning seat 9.

[0053] The inner spline barrel 17 is fixedly provided with a stand 18, the sub-socket seat 23 is fixedly and rotatably mounted on the stand 18, the stand 18 is further fixedly and rotatably provided with a driven wheel 22, the driven wheel 22 is coaxially fixed between the sub-socket seat 23, and the stand 18 is provided with a belt for driving the driven wheel 22 and the driving wheel 16.

[0054] As shown in Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 7 , the end seat 10 is fixedly connected on the transverse base plate 7, and the end seat 10 is fixedly provided with a motor, the central shaft 11 is driven to rotate around its own axis by the motor, and the central shaft 11 is fixedly and rotatably mounted on the end seat 10 and the three-jaw positioning seat 9 at the same time, and the central shaft 11 is coaxially fixed with the central worm 12, so that when the central shaft 11 rotates, the central worm 12 can be driven to rotate synchronously.

[0055] Under the limitation of the internal pressure resistance assembly, when the central shaft 11 drives the central worm 12 to preliminarily rotate, it is difficult to drive the three-jaw positioning seat 9 to rotate synchronously with the central worm 12, but under the driving of the internal pressure resistance assembly, because the sliding friction between the three-jaw positioning seat 9 and the end seat 10 is large, at this time the three-jaw positioning seat 9 will not rotate on the end seat 10.

[0056] Meanwhile, the center worm 12 is capable of driving the multiple sets of side position worm gears 13 engaged and connected therewith to rotate synchronously when rotating, the multiple sets of side position worm gears 13 are arranged in a ring array with the center worm 12 as the center, and the homologous rods 14 fixed coaxially thereon are capable of swinging when the side position worm gears 13 rotate, at the same time, the guide column 8 is slidably sleeved with the inner spline barrel 17 through the axial groove 801 integrally formed thereon, and the driving wheel 16 is fixedly rotated on the inner spline barrel 17, and the connecting rod 15 is freely deflected between the driving wheel 16 and the connecting rod 15, therefore, when the multiple sets of side position worm gears 13 drive the homologous rods 14 arranged thereon to swing, the driving wheel 16 and the inner spline barrel 17 are capable of moving horizontally in the laying direction of the guide column 8, thereby changing the horizontal position of the sub-socket seat 23 arranged on the inner spline barrel 17, so as to make the semi-arc groove 231 on the sub-socket seat 23 close to or away from the nail cap 241.

[0057] It should be noted that the three-claw positioning seat 9 includes an integral outer extension 901 corresponding to the deflection direction of the homologous rod 14, and the homologous rod 14 is in contact with the outer extension 901 in the initial state, and the axial notch 232 is below the relative position of the sub-socket seat 23.

[0058] As shown in Figure 1 , Figure 7 and Figure 9 , in the initial state, the opening of the axial notch 232 faces downward, and the homologous rod 14 is in contact with the outer extension 901, at this time, the distance between the inner spline barrel 17, the sub-socket seat 23 and the hanging nail 24 is the maximum, with the rotation of the center shaft 11 and the center worm 12, the side position worm gear 13 and the homologous rod 14 rotate, thereby gradually deviating the homologous rod 14 from the outer extension 901, until the nail cap 241 enters the semi-arc groove 231, the sub-socket seat 23 cannot continue to move horizontally under the obstruction of the hanging nail 24, and the inner spline barrel 17 cannot continue to move horizontally thereafter, so that the homologous rod 14 and the side position worm gear 13 cannot rotate on the three-claw positioning seat 9 at this time.

[0059] Therefore, the continuous rotation of the subsequent central shaft 11 can promote the three-jaw positioning seat 9 to overcome the frictional force between the three-jaw positioning seat 9 and the end seat 10, and then the central worm 12, the edge worm 13 and the three-jaw positioning seat 9 can rotate on the end seat 10 following the central shaft 11. When the edge worm 13 and the three-jaw positioning seat 9 rotate on the end seat 10 synchronously, the driving wheel 16 can rotate on the inner spline barrel 17 synchronously through the homologous rod 14 and the connecting rod 15, and the driving wheel 16 and the driven wheel 22 are driven by the belt, and the driven wheel 22 and the sub-socket seat 23 are coaxially fixed and rotate on the stand 18. Therefore, when the driving wheel 16 rotates, the driven wheel 22 and the sub-socket seat 23 can rotate in the vertical direction synchronously.

[0060] When the sub-socket seat 23 rotates, the position of the semicircular groove 231 can be changed, and then the relative position of the semicircular groove 231 and the nail cap 241 can be changed, so that the semicircular groove 231 can be clamped in the semicircular groove 231 and is difficult to be separated from the semicircular groove 231. Therefore, when the pull force is applied to the hanging nail 24 by the power system 2, it can be ensured that the hanging nail 24 cannot be separated from the two groups of sub-socket seats 23 during the detection process, so as to ensure the smooth transmission process of the pull force, and then the stress condition of the hanging nail 24 in the actual hoisting process can be simulated, and the possible quality problems of the hanging nail 24, such as material defects and manufacturing defects, can be found in advance through the pull-off force detection, so as to prevent potential safety accidents. The hanging nail 24 can be effectively prevented from loosening or falling off in the hoisting process due to excessive stress, so as to avoid potential safety accidents.

[0061] On the basis of the translation self-linking assembly embodiment, the internal pressure resistance assembly includes a plurality of internal resistance blocks 21 arranged on the end seat 10 and having a high friction coefficient. The plurality of internal resistance blocks 21 are arranged in a ring array on the end seat 10, and the end seat 10 is provided with a plurality of column cavity grooves 19 corresponding to the positions of the plurality of internal resistance blocks 21 for sliding connection, and the internal resistance blocks 21 abut against the three-jaw positioning seat 9.

[0062] The column cavity groove 19 is provided with a bearing spring 20, and the two ends of the bearing spring 20 are fixedly connected to the end seat 10 and the internal resistance block 21 respectively. The plurality of bearing springs 20 are in a compressed deformation state.

[0063] As shown in Figure 7 and Figure 8 A plurality of column cavity grooves 19 are formed in the end seat 10, and a bearing spring 20 is arranged in each column cavity groove 19. The internal resistance block 21 fixedly arranged at the end of the driven wheel 22 is in sliding contact with the three-jaw positioning seat 9, and the compression elastic potential energy of the bearing spring 20 can promote the internal resistance block 21 to exert a certain value of positive pressure on the three-jaw positioning seat 9. The friction coefficient of the internal resistance block 21 is large, and the friction resistance between the three-jaw positioning seat 9 and the end seat 10 is large.

[0064] Therefore, when the central shaft 11 rotates, due to the large frictional resistance of the three-jaw positioning seat 9 and the end position seat 10, the central worm 12 can drive the side position worm gear 13 to rotate on the three-jaw positioning seat 9 when the central shaft 11 rotates, thereby driving the driving wheel 16, the inner spline barrel 17 and the sub-socket seat 23 to move towards the side of the hanging nail 24.

[0065] When the sub-socket seat 23 cannot continue to move horizontally due to the resistance of the hanging nail 24, the driving wheel 16 and the sub-socket seat 23 cannot continue to move horizontally, and the central shaft 11 resists the rotational frictional resistance between the three-jaw positioning seat 9 and the end position seat 10 during rotation, thereby causing the three-jaw positioning seat 9, the side position worm gear 13 and the driving wheel 16 to rotate around the horizontal axis, and through the rotation of the driving wheel 16, the sub-socket seat 23 is driven to rotate synchronously by the driven wheel 22, until the nail cap 241 deviates from the position of the axial gap 232, so as to cause the nail cap 241 to be clamped in the semi-arc groove 231 formed on the two groups of sub-socket seats 23.

[0066] On the basis of the inner pressure resistance assembly embodiment, the hollow cylinder 4 is fixedly connected to the pull column 3, and the spline column 5 is arranged below the hollow cylinder 4, and the spline groove is formed in the hollow cylinder 4 for the spline column 5 to slide through.

[0067] The spline column 5 is fixedly connected between the transverse base plate 7 and the guide disc 6 fixedly connected to the end of the spline column 5 away from the transverse base plate 7, and the outer circumferential surface of the guide disc 6 is in sliding contact with the inner wall of the hollow cylinder 4. The locking bolt 25 is threadedly connected to the hollow cylinder 4, and the guide disc 6 is provided with a threaded hole corresponding to the position of the locking bolt 25.

[0068] As shown in Figure 1 , Figure 2 and Figure 6 , when the power system 2 drives the pull column 3 to move upward, the hollow cylinder 4 can be synchronously driven to move upward, wherein the hollow cylinder 4 is slidably connected to the spline column 5 through the spline groove, and the spline column 5 is fixedly connected between the transverse base plate 7, thereby avoiding any displacement of the transverse base plate 7 relative to the hollow cylinder 4.

[0069] At the same time, as the pull column 3 gradually moves upward, the guide disc 6 provided on the spline column 5 and the hollow cylinder 4 are relatively displaced, thereby causing the guide disc 6 to abut against the bottom wall in the hollow cylinder 4. When the pull column 3 continues to move upward, the transverse base plate 7 can be driven to move upward synchronously by the hollow cylinder 4, the spline column 5 and the guide disc 6, and the pulling force can be transmitted to the nail cap 241 through the side wall of the semi-arc groove 231, so as to realize the anti-pulling force detection process of the hanging nail 24.

[0070] When the power system 2 drives the pull column 3 to move upward, the pull column 3 will not exert a pulling force on the hanging bolt 24 in the process that the guide disc 6 does not contact the bottom wall of the hollow cylinder 4. The power system 2 may generate an initial impact when it is just running, and the main reasons include pressure fluctuation of the hydraulic system, mechanical inertia and operation factors in the test process, and then the initial impact that may occur when the power system 2 is initially running is avoided by the invalid displacement of the guide disc 6 on the hollow cylinder 4, so as to avoid the initial impact from being transmitted to the hanging bolt 24.

[0071] It should be noted that when the detection device is accommodated, the locking bolt 25 can be screwed to enter the corresponding threaded hole on the guide disc 6, so as to lock the guide disc 6, prevent the relative displacement between the guide disc 6 and the hollow cylinder 4, and prevent the horizontal base plate 7 and the parts arranged thereon from shaking randomly during the transfer process.

[0072] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the pull-out resistance of an insert, comprising a base frame (1) and a pull column (3) arranged thereon, the base frame (1) being provided with a power system (2) for controlling the pull column (3) and a force sensor for measuring the value of the pulling force applied to the lifting bolt (24), characterized in that: The pull column (3) is provided with an end-to-end clamping mechanism; The end-to-end clamping mechanism comprises a sub-embedding seat (23), and the hanging pin (24) comprises a pin cap (241); The sub-embedding seat (23) is provided with a semi-arc groove (231) for accommodating the pin cap (241) and an axial notch (232) in communication with the semi-arc groove (231); Two sub-embedding seats (23) are arranged on both sides of the pin cap (241) and are configured to move towards each other so that the bottom wall of the semi-arc groove (231) abuts against the pin cap (241); the sub-embedding seat (23) can rotate around its own axis to make the side wall of the semi-arc groove (231) below the pin cap (241); The end-to-end clamping mechanism further comprises a transverse base plate (7) arranged below the pull column (3), the transverse base plate (7) is fixedly connected with a horizontally arranged guide column (8), the guide column (8) is slidably sleeved with two groups of internal spline cylinders (17), the guide column (8) comprises a plurality of groups of axial grooves (801) integrally formed and allowing the two groups of internal spline cylinders (17) to slide horizontally; The transverse base plate (7) is provided with a translation self-linking assembly for driving the internal spline cylinder (17) to move horizontally and changing the relative position of the semi-arc groove (231) and the pin cap (241) after the sub-embedding seat (23) and the hanging pin (24) are in contact; The translation self-linking assembly comprises an end position seat (10) fixedly connected to the transverse base plate (7), a three-jaw positioning seat (9) rotatably arranged on the end position seat (10), a central shaft (11) rotatably arranged on the end position seat (10), and a motor fixedly connected to the end position seat (10) for driving the central shaft (11) to rotate freely around the horizontal axis, a central worm (12) rotatably arranged on the three-jaw positioning seat (9), and the central worm (12) and the central shaft (11) are coaxially fixed; The central shaft (11) is rotatably arranged on the three-jaw positioning seat (9), the central worm (12) is engaged with a plurality of groups of side position worm gears (13), and the plurality of groups of side position worm gears (13) are rotatably arranged on the three-jaw positioning seat (9), and the side position worm gears (13) are coaxially fixed with homologous rods (14); The side of the internal spline cylinder (17) facing the three-jaw positioning seat (9) is rotatably arranged with a driving wheel (16), the driving wheel (16) is rotatably arranged with a connecting rod (15), and the end of the connecting rod (15) away from the driving wheel (16) is rotatably arranged on the end of the homologous rod (14) away from the side position worm gear (13); The end position seat (10) is provided with an internal pressure resistance assembly for limiting the rotation of the three-jaw positioning seat (9).

2. The pull-off resistance detection device of the insert according to claim 1, characterized in that The internal spline cylinder (17) is fixedly sleeved with a stand (18), the sub-embedding seat (23) is rotatably arranged on the stand (18), and the stand (18) is further rotatably arranged with a driven wheel (22), and the driven wheel (22) and the sub-embedding seat (23) are coaxially fixed; The stand (18) is provided with a belt for driving the driven wheel (22) and the driving wheel (16).

3. The pull-off resistance detection device of the insert according to claim 2, characterized in that The inner pressure resistance assembly comprises a plurality of groups of inner resistance blocks (21) arranged in a ring array on the end seat (10), the end seat (10) is provided with a column cavity slot (19) for sliding connection of the plurality of groups of inner resistance blocks (21) at positions corresponding to the plurality of groups of inner resistance blocks (21), and the inner resistance blocks (21) abut against the three-jaw positioning seat (9).

4. The pull-off resistance detection device of the insert according to claim 3, characterized in that: The column cavity slot (19) is provided with a bearing spring (20), and the two ends of the bearing spring (20) are fixedly connected to the end seat (10) and the inner resistance block (21) respectively.

5. The pull-off resistance detection device of the insert according to claim 4, characterized in that The plurality of groups of bearing springs (20) are in a compressed deformation state.

6. The pull-off resistance detection device of the insert according to claim 1, characterized in that: The three-jaw positioning seat (9) comprises an integrally formed outer extension (901), and the outer extension (901) corresponds to the deflection direction of the co-site rod (14).

7. The pull-off resistance detection device of the insert according to claim 6, characterized in that In the initial state, the co-site rod (14) abuts against the outer extension (901), and the axial notch (232) is below the relative position of the sub-item embedding port seat (23).

8. The pull-off resistance detection device of the insert according to claim 1, characterized in that: The hollow cylinder (4) is fixedly connected to the pull column (3), the hollow cylinder (4) is provided with a spline column (5) below, and the hollow cylinder (4) is provided with a spline slot for sliding penetration of the spline column (5); The spline column (5) is fixedly connected between the spline column (5) and the transverse base plate (7), one end of the spline column (5) away from the transverse base plate (7) is fixedly connected with a guide disc (6), and the outer circumferential surface of the guide disc (6) is in sliding contact with the inner wall of the hollow cylinder (4); The hollow cylinder (4) is threadedly connected with a locking bolt (25), and the guide disc (6) is provided with a threaded hole corresponding to the position of the locking bolt (25).

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