Device for detecting pulling-out resistance of embedded part

Abstract

The invention discloses an embedded part pulling-out resistance detection device, and relates to the technical field of pulling-out resistance detection devices. Comprising a base frame and a pull column arranged on the base frame, the pull column is provided with an end direction clamping and moving mechanism used for being self-adaptive to the size of a hanging nail so as to clamp and limit the hanging nail, the end direction clamping and moving mechanism comprises a subentry embedding opening seat, and the hanging nail comprises a nail cap; a semi-arc groove and an axial notch which are used for containing the nail cap are formed in the sub-entry embedding opening seat, and the axial notch is communicated with the semi-arc groove; the two sub-entry embedding opening seats are arranged on the two sides of the nail cap and can move in the opposite directions so that the bottom walls of the semi-arc grooves can abut against the nail cap. The subitem embedding opening base can rotate around the axis of the subitem embedding opening base so that the side wall of the semi-arc groove can be located below the nail cap. According to the invention, by arranging the end-direction clamping and moving mechanism, the device can adapt to the pre-embedded hanging nails of different sizes, does not need to frequently replace a clamp, remarkably improves the adaptability of the detection device to the pre-embedded hanging nails of different specifications, improves the detection efficiency, and reduces the extra time and labor cost caused by the replacement of the clamp.

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: the pulling column is provided with an end-to-end clamping mechanism. The end-to-end clamping mechanism comprises a sub-embedding seat, and the hanging nail comprises a nail cap. 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. 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.

[0008] 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, and 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. 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.

[0009] Further, the translation self-linking assembly comprises an end position seat fixedly connected to the transverse base plate, a three-jaw positioning seat rotatably arranged on the end position seat, a central shaft rotatably arranged on the end position seat, and a motor fixedly connected to the end position seat for driving the central shaft to rotate freely around the horizontal axis, a central worm rotatably arranged on the three-jaw positioning seat, and the central worm is coaxially fixed between the central shaft. The central shaft is rotatably arranged on the three-jaw positioning seat, a plurality of side position worm gears are rotatably arranged on the three-jaw positioning seat, and the side position worm gears are coaxially fixed on the homopolar rod. The side of the internal spline barrel towards the three-jaw positioning seat is rotatably arranged with a driving wheel, the driving wheel is rotatably arranged with a connecting rod, and the end of the connecting rod away from the driving wheel is rotatably arranged on the end of the homopolar rod away from the side position worm gear. The end position seat is provided with an internal pressure resistance assembly for limiting the rotation of the three-jaw positioning seat.

[0010] Further, the inner spline barrel is fixedly provided with a stand, the split embedding seat shaft rotates on the stand, and a driven wheel shaft rotates on the stand, and the driven wheel is coaxially fixed between the split embedding seat. The stand is provided with a belt for driving the driven wheel and the driving wheel.

[0011] Further, the inner pressure resistance assembly includes a plurality of inner resistance blocks arranged in a ring array on the end seat, and the end seat is provided with a column cavity groove for sliding connection of the plurality of inner resistance blocks at positions corresponding to the plurality of inner resistance blocks.

[0012] Further, a resisting spring is arranged in the column cavity groove, and the two ends of the resisting spring are fixedly connected to the end seat and the inner resistance block, respectively.

[0013] Further, the plurality of resisting springs are in a compressed deformation state.

[0014] Further, the three-jaw positioning seat includes an integrally formed outer extension portion, and the outer extension portion corresponds to the deflection direction of the same-position rod.

[0015] Further, in the initial state, the same-position rod abuts against the outer extension portion, and the axial notch is below the relative position of the split embedding seat.

[0016] 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 formed in the hollow cylinder for sliding penetration of the spline column; The spline column is fixedly connected between the spline column and the transverse base plate, and a guide disc is fixedly connected to the end of the spline column away from the transverse base plate, and the outer circumferential surface of the guide disc is in sliding contact with the inner wall of the hollow cylinder. A locking bolt is threadedly connected to the hollow cylinder, and a threaded hole is formed in the guide disc corresponding to the position of the locking bolt.

[0017] Compared with the prior art, the beneficial effects of the present application are as follows: 1、The end-direction clamping mechanism can adapt to different sizes of embedded lifting bolts, the split embedding seat is provided with a semicircular groove and an axial notch structure, and the driving of the translation self-linking assembly can accurately clamp different diameter bolt caps without frequent replacement of clamps, which significantly improves the adaptability of the detection device to different specifications of embedded lifting bolts, thereby improving the detection efficiency and reducing the additional time and labor cost caused by replacement of clamps.

[0018] 2、The present application can simulate the stress condition of pre-buried lifting bolt in actual lifting and use process through setting the pull-off force detection process of the lifting bolt, and then the possible quality problems of the lifting bolt, such as material defects, manufacturing defects, etc., can be found in advance, so that potential safety accidents are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the component where the transverse base plate of the present application is located; Figure 3 It is a schematic diagram of the component where the guide column of the present application is located; Figure 4 It is a schematic diagram of the component where the three-claw positioning seat of the present application is located; Figure 5 It is an enlarged view of A in the present application; Figure 4 Figure 6 It is a schematic diagram of the component where the spline column of the present application is located; Figure 7 It is a schematic diagram of the component where the end position seat of the present application is located; Figure 8 It is an enlarged view of B in the present application; Figure 7 Figure 9 It is a schematic diagram of the component where the sub-embedded seat of the present application is located; Figure 10 It is a schematic diagram of the positional relationship between the lifting bolt and the two groups of sub-embedded seats of the present application.

[0020] 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-claw positioning seat; 901, outer extension; 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 seat; 231, semicircular groove; 232, axial notch; 24, lifting bolt; 241, bolt cap; 25, locking bolt. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely 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 labor fall within the scope of protection of the present application.

[0022] ​​Please refer to Figures 1 to 10 The present application provides a kind of embedded anti-pulling force detection device, including base frame 1 and the pull column 3 being arranged on it, base frame 1 is equipped with the power system 2 for controlling pull column 3 and the force sensor for measuring the pulling force value applied to the lifting bolt 24, pull column 3 is equipped with the end direction clamping mechanism for self-adapting the size of lifting bolt 24 to be connected to limit lifting bolt 24.

[0023] End direction clamping mechanism includes the transverse base plate 7 being arranged below pull column 3, the horizontal guide column 8 being fixedly connected on transverse base plate 7, two groups of inner spline barrels 17 are slidably arranged on guide column 8, guide column 8 includes a plurality of groups of axial grooves 801 integrally formed and for the horizontal sliding of two groups of inner spline barrels 17, and one group of sub-embedded seat 23 for limiting the position of lifting bolt 24 is respectively arranged below two groups of inner spline barrels 17. That is, the protrusions on the inner wall of inner spline barrel 17 cooperate with axial grooves 801 to prevent relative rotation between guide column 8 and inner spline barrel 17.

[0024] Lifting bolt 24 includes integrally formed bolt cap 241, and sub-embedded seat 23 includes integrally formed semi-arc groove 231 for accommodating bolt cap 241, as Figure 10 As shown, the side end position of sub-embedded seat 23 provided with semi-arc groove 231 also includes integrally formed axial notch 232.

[0025] Transverse base plate 7 is provided with a translation self-linking assembly for driving inner spline barrel 17 to move horizontally and changing the relative position of semi-arc groove 231 and bolt cap 241 after sub-embedded seat 23 and lifting bolt 24 are in contact.

[0026] As Figures 1-3 shown, when the pulling force detection of the lifting bolt 24 pre-buried in the concrete prefabricated part is carried out, 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, the horizontal height of the transverse base plate 7 is adjusted to enable the sub-embedded seat 23 arranged on the two groups of inner spline barrels 17 to be respectively located on one side of the bolt cap 241 in the lifting bolt 24.

[0027] At the same time, the inner spline barrel 17 can be driven to move in the horizontal direction by the translation self-linking assembly, so as to drive the inner spline barrel 17 and the sub-embedded seat 23 to move towards the bolt cap 241, wherein two groups of translation self-linking assemblies are arranged on the transverse base plate 7, and both groups of translation self-linking assemblies drive the corresponding sub-embedded seat 23 to move towards the bolt cap 241 until the bolt cap 241 passes through the position of the axial notch 232 and contacts the bottom wall of the semi-arc groove 231.

[0028] At this time, due to the contact between the nail cap 241 and the bottom wall of the semi-arc groove 231, the sub-socket seat 23 cannot continue to move in the horizontal direction under the restriction of the nail cap 241, and at this time the inner spline barrel 17 cannot continue to move in the horizontal direction towards the side of the nail cap 241, so as the translation self-link assembly continues to operate, the sub-socket seat 23 can be driven to rotate around its own horizontal axis by a certain angle, thereby changing the position of the axial gap 232, i.e. changing the relative position between the nail cap 241 and the semi-arc groove 231, so that the side wall of the semi-arc groove 231 is located below the nail cap 241, and the sub-socket seat 23 can then apply an upward pulling force to the hanging nail 24.

[0029] 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 then to the nail cap 241 through the sub-socket seat 23, thereby realizing the detection process of the pulling force of the hanging nail 24. During the detection process, since the nail cap 241 is located in the semi-arc groove 231 on both sides in the horizontal direction and does not correspond to the axial gap 232, when the sub-socket seat 23 applies an upward pulling force to the nail cap 241, the nail 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 nail cap 241 through the outer peripheral wall, and measuring the size of the pulling force applied to the nail cap 241 by the power system 2 in real time.

[0030] In a preferred embodiment, the translation self-link assembly includes an end seat 10 fixedly connected to the transverse base plate 7, a three-jaw positioning seat 9 rotatably mounted on the end seat 10, a central shaft 11 rotatably mounted on the end seat 10, and a motor fixedly connected to the end seat 10 for driving the central shaft 11 to rotate freely around the horizontal axis. The three-jaw positioning seat 9 rotatably mounts a central worm 12, and the central worm 12 is coaxially fixed between the central shaft 11.

[0031] The central shaft 11 is rotatably mounted on the three-jaw positioning seat 9, and the central worm 12 is meshingly connected to a plurality of side position worm gears 13, which are rotatably mounted on the three-jaw positioning seat 9. The side position worm gears 13 are coaxially fixed with a same-position rod 14.

[0032] The inner spline barrel 17 rotatably mounts a driving wheel 16 on one side of the three-jaw positioning seat 9, and the driving wheel 16 rotatably mounts a connecting rod 15. The connecting rod 15 rotatably mounts the same-position rod 14 away from the side position worm gears 13 on one end of the connecting rod 15 away from the driving wheel 16. The end seat 10 is provided with an internal pressure resistance assembly for limiting the rotation of the three-jaw positioning seat 9.

[0033] The inner spline barrel 17 is fixedly sleeved with a stand 18, and the sub-socket seat 23 is fixedly and rotationally arranged on the stand 18. The stand 18 further rotationally arranges a driven wheel 22 thereon, and the driven wheel 22 is coaxially fixed between the sub-socket seat 23. The stand 18 is provided with a belt for driving the driven wheel 22 and the driving wheel 16.

[0034] As shown in Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 , the end seat 10 is fixedly connected to the transverse base plate 7, and a motor is fixedly arranged on the end seat 10. The motor drives the central shaft 11 to rotate around the axis of the central shaft 11, and the central shaft 11 is synchronously fixedly arranged on the end seat 10 and the three-jaw positioning seat 9. Meanwhile, the central shaft 11 is coaxially fixed with the central worm 12. When the central shaft 11 rotates, the central worm 12 is driven to rotate synchronously.

[0035] Under the limitation of the internal pressure resistance assembly, when the central shaft 11 drives the central worm 12 to initially rotate, it is difficult to drive the three-jaw positioning seat 9 to rotate synchronously with the central worm 12. Instead, 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, the three-jaw positioning seat 9 will not rotate on the end seat 10 at this time.

[0036] At the same time, when the central worm 12 rotates, it can drive the multiple sets of side position worm gears 13 connected therewith to rotate synchronously. The multiple sets of side position worm gears 13 are arranged in a ring array around the central worm 12, and when the side position worm gears 13 rotate, they can drive the co-site rods 14 fixedly arranged thereon to swing. Meanwhile, the guide column 8 is slidably sleeved with the inner spline barrel 17 through the axial groove 801 integrally formed thereon, and the inner spline barrel 17 is fixedly and rotationally arranged with the driving wheel 16. The driving wheel 16 and the connecting rod 15 are arranged to be freely deflectable. Therefore, when the multiple sets of side position worm gears 13 drive the co-site rods 14 arranged thereon to swing, the driving wheel 16 and the inner spline barrel 17 can be driven to move 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 approach or move away from the nail cap 241.

[0037] It should be noted that the three-jaw positioning seat 9 includes an integrally formed outer extension 901 corresponding to the deflection direction of the co-site rod 14. 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-socket seat 23.

[0038] As shown in Figure 1 , Figure 7 and Figure 9As shown, in the initial state, the opening of the axial gap 232 is downward, and the homologous rod 14 is in contact with the overhanging part 901, and at this time, the distance between the inner spline barrel 17 and the sub-socket seat 23 and the hanging pin 24 is the maximum. With the rotation of the central shaft 11 and the central worm 12, the side worm gear 13 and the homologous rod 14 rotate, and then the homologous rod 14 gradually deviates from the overhanging part 901 until the pin cap 241 enters the semicircular groove 231, and the sub-socket seat 23 cannot continue to move horizontally under the obstruction of the hanging pin 24, and then the inner spline barrel 17 cannot continue to move horizontally, so that the homologous rod 14 and the side worm gear 13 cannot rotate on the three-jaw positioning seat 9 at this time.

[0039] Therefore, the subsequent rotation of the central shaft 11 can overcome the friction between the three-jaw positioning seat 9 and the end seat 10, and then the central worm 12, the side worm gear 13 and the three-jaw positioning seat 9 can rotate on the end seat 10 with the central shaft 11. When the side worm gear 13 and the three-jaw positioning seat 9 rotate on the end seat 10 synchronously, the homologous rod 14 and the connecting rod 15 can drive the driving wheel 16 to rotate on the inner spline barrel 17 synchronously, and the driving wheel 16 and the driven wheel 22 are coaxially fixed and rotate on the stand 18, so that the driving wheel 16 can drive the driven wheel 22 and the sub-socket seat 23 to rotate in the vertical direction when the driving wheel 16 rotates.

[0040] When the sub-socket seat 23 rotates, the position of the semicircular groove 231 changes, and the relative position of the semicircular groove 231 and the pin cap 241 changes, 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 power system 2 applies tension to the hanging pin 24, it can ensure that the hanging pin 24 cannot be separated from the two groups of sub-socket seats 23 during the detection process, so as to ensure the smooth transmission of the tension, and simulate the stress condition of the hanging pin 24 in the actual hoisting process, and detect the possible quality problems of the hanging pin 24, such as material defects and manufacturing defects, so as to prevent potential safety accidents. It can effectively prevent the hanging pin 24 from loosening or falling off in the hoisting process due to excessive stress, thereby avoiding potential safety accidents.

[0041] 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 column cavity groove 19 corresponding to the position of the plurality of internal resistance blocks 21 for sliding connection, and the internal resistance block 21 abuts against the three-jaw positioning seat 9.

[0042] The column cavity groove 19 is provided with a resisting spring 20, both ends of the resisting spring 20 are fixedly connected to the end position seat 10 and the inner resistance block 21 respectively, and a plurality of groups of the resisting spring 20 are in a compressed deformation state.

[0043] As shown in Figure 7 and Figure 8 , the end position seat 10 is provided with a plurality of groups of column cavity grooves 19, and each group of column cavity grooves 19 is provided with a resisting spring 20, and the inner 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 then the compression elastic potential energy of the resisting spring 20 promotes the inner resistance block 21 to exert a certain value of positive pressure on the three-jaw positioning seat 9, and the friction coefficient of the inner resistance block 21 is large, thereby promoting the friction resistance between the three-jaw positioning seat 9 and the end position seat 10 to be large.

[0044] Therefore, when the central shaft 11 rotates, due to the large friction resistance between the three-jaw positioning seat 9 and the end position seat 10, at this time the central worm 12 can drive the side position worm gear 13 to rotate on the three-jaw positioning seat 9 when following the central shaft 11 to rotate, 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.

[0045] When the sub-socket seat 23 cannot continue to move horizontally due to the resistance of the hanging nail 24, at this time the driving wheel 16 and the sub-socket seat 23 cannot continue to move horizontally, and then the central shaft 11 resists the rotational friction resistance between the three-jaw positioning seat 9 and the end position seat 10 during the rotation process, thereby promoting 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 process 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 where the axial gap 232 is located, so as to make the nail cap 241 clamped in the semicircular groove 231 arranged in the two groups of sub-socket seats 23.

[0046] On the basis of the inner pressure resistance assembly embodiment, the hollow cylinder 4 is fixedly connected to the pull column 3, the spline column 5 is arranged below the hollow cylinder 4, and the spline groove is arranged in the hollow cylinder 4 for the spline column 5 to slide through.

[0047] The spline column 5 is fixedly connected between the horizontal base plate 7 and the guide disc 6 fixedly connected to the end of the spline column 5 away from the horizontal base plate 7, 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.

[0048] As shown in Figure 1 , Figure 2 and Figure 6As shown, 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 with the spline column 5 through the spline groove, and the spline column 5 is fixedly connected with the transverse base plate 7, so as to avoid the phenomenon that the transverse base plate 7 is arbitrarily displaced relative to the hollow cylinder 4.

[0049] At the same time, as the pull column 3 is gradually moved upward, the guide disc 6 arranged on the spline column 5 is relatively displaced with the hollow cylinder 4, and then the guide disc 6 is abutted with the bottom wall in the hollow cylinder 4, after that, when the pull column 3 continues to move upward, the transverse base plate 7 can be synchronously driven to move upward through the hollow cylinder 4, the spline column 5 and the guide disc 6, and the pulling force is transmitted to the nail cap 241 through the side wall of the semi-arc slot 231, so as to realize the tensile force detection process of the hanging nail 24.

[0050] In the process that the power system 2 drives the pull column 3 to move upward, the pull column 3 will not exert the pulling force on the hanging nail 24 in the process that the guide disc 6 is not abutted with the bottom wall of the hollow cylinder 4, wherein the power system 2 may generate the initial impact when it is just operated, and the main reasons include the pressure fluctuation of the hydraulic system, the mechanical inertia and the operation factors in the test process, and then the invalid displacement of the guide disc 6 on the hollow cylinder 4 is adopted, so as to avoid that the initial impact generated when the power system 2 is initially operated is transmitted to the hanging nail 24.

[0051] It should be noted that when the detection device is accommodated, the locking bolt 25 can be screwed to drive the locking bolt 25 into the corresponding threaded hole on the guide disc 6, and then the guide disc 6 is locked to prevent the relative displacement between the guide disc 6 and the hollow cylinder 4, so as to prevent the transverse base plate 7 and the components arranged thereon from being arbitrarily shaken in the transportation process.

[0052] 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 load cell 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 semicircular groove (231) for accommodating the pin cap (241) and an axial notch (232) in communication with the semicircular 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 semicircular 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 semicircular groove (231) below the pin cap (241).

2. The pull-off resistance detection device of the insert according to claim 1, characterized in that The end-to-end clamping mechanism further comprises a transverse base plate (7) arranged below the pull column (3), a horizontally arranged guide column (8) fixedly connected to the transverse base plate (7), two groups of internal spline cylinders (17) slidably sleeved on the guide column (8), and 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 semicircular groove (231) and the pin cap (241) after the sub-embedding seat (23) and the hanging pin (24) are in contact.

3. The pull-off resistance detection device of the insert according to claim 2, characterized in that 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 engagedly connected 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); 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 one end of the connecting rod (15) away from the driving wheel (16) is rotatably arranged on one 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).

4. The pull-off resistance detection device of the insert according to claim 3, 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).

5. The pull-off resistance detection device of the insert according to claim 4, 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).

6. The pull-off resistance detection device of the insert according to claim 5, 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.

7. The pull-off resistance detection device of the insert according to claim 6, characterized in that The plurality of groups of bearing springs (20) are in a compressed deformation state.

8. The pull-off resistance detection device of the insert according to claim 3, 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).

9. The pull-off resistance detection device of the insert according to claim 8, 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).

10. The pull-off resistance detection device of the insert according to claim 2, characterized in that: The pull column (3) is fixedly connected with a hollow cylinder (4), the lower portion of the hollow cylinder (4) is provided with a spline column (5), and the hollow cylinder (4) is provided with a spline groove for sliding penetration of the spline column (5); The spline column (5) is fixedly connected between the hollow cylinder (4) 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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