Torsion tension testing machine

Abstract

The invention relates to a torsion tension testing machine. The torsion tension testing machine comprises a base, a clamping mechanism and a dynamic load mechanism, the clamping mechanism comprises two clamping assemblies. Each clamping assembly comprises a support, a fixed ring, a rotating ring, a driving piece and a plurality of guide chucks. The support is mounted on the base; the fixing rings are fixedly connected to the support, and the fixing rings in the two clamping assemblies are coaxially arranged. The rotating ring and the fixed ring are concentrically arranged, and the rotating ring is rotationally connected with the fixed ring; a guide sliding groove is formed in one side of the fixing ring, arc-shaped teeth are arranged on one side of the guide chuck, and plane spiral teeth are arranged on one side of the rotating ring. The dynamic load mechanism is mounted on the base and is used for detecting the torsion stress and the tensile stress of the to-be-detected bolt; through the second controller and the clamping mechanism, to-be-detected bolts of different sizes and specifications can be automatically limited and clamped, disassembly and replacement of a bolt clamping head and a nut clamping head in the prior art are avoided, the limiting and clamping efficiency of the to-be-detected bolts is improved, and then the torsion detection efficiency of the to-be-detected bolts is improved.

Description

Technical Field

[0001] The present application relates to the technical field of fastener detection, and in particular to a torsion tensile testing machine. Background Art

[0002] A bolt is a threaded mechanical connector used to fit a nut. When bolts are used in the aviation, aerospace or railway fields, higher requirements are placed on the mechanical properties of the bolts, which are mainly reflected in the requirements for locking tension, breaking torque and anti-slip torque. Tensile testing machines, torsion testing machines and shear testing machines are required to test the performance of the bolts.

[0003] The torsion tensile testing machine in the prior art includes a torsion tensile testing device and a detection data acquisition device. The torsion tensile testing device includes a box body and a workbench arranged on the box body. A reducer bracket is arranged at one end of the workbench, and a reducer is arranged on the reducer bracket. A power motor is arranged at the rear end of the reducer. The front end of the reducer is connected to the bolt head clamp through a coupling. A slide rail is arranged at one end of the workbench. A movable slider 1 is movably connected to the slide rail. The movable slider 1 is connected to the nut clamp through a nut clamp bracket; the detection data acquisition device includes a dynamic torque sensor and a tension and pressure sensor. The dynamic torque sensor is arranged on the outside of the connection between the coupling and the bolt head clamp. The dynamic torque sensor is fixed on the workbench through the dynamic torque sensor bracket. The tension and pressure sensor is connected to the movable slider 2 through the tension and pressure sensor bracket. The movable slider 2 is movably connected to the slide rail between the bolt head clamp and the nut clamp. A through hole is arranged at the center of the tension and pressure sensor and the tension and pressure sensor bracket.

[0004] During the above-mentioned bolt torque and tension testing process, the staff is required to replace the bolt clamp in the bolt head fixture and the nut clamp in the nut fixture according to the size structure of the bolt to be tested, resulting in low installation efficiency of the bolt to be tested, affecting the bolt torsion and tension testing efficiency. Summary of the invention

[0005] In order to improve the efficiency of bolt torsion and tension testing, the present application provides a torsion and tension testing machine.

[0006] The present application provides a torsion tensile testing machine, which adopts the following technical solution: A torsion tensile testing machine comprises a base, a clamping mechanism and a dynamic loading mechanism; The clamping mechanism comprises two groups of clamping assemblies, and the two groups of clamping mechanisms are respectively used to limit and fix the head end and the tail end of the bolt to be tested; The clamping assembly includes a support, a fixed ring, a rotating ring, a driving member and a plurality of guide clamps; The support is mounted on the base; The fixing ring is fixedly connected to the support, and the fixing rings in the two groups of the clamping assemblies are coaxially arranged; The rotating ring is concentrically arranged with the fixed ring, and the rotating ring is rotatably connected with the fixed ring; A guide slot for sliding the guide chuck is provided on one side of the fixed ring close to the rotating ring, the guide slot is arranged along the radial direction of the fixed ring, and a plurality of the guide slots are evenly distributed along the circumferential direction of the fixed ring; The guide chuck is provided with arc-shaped teeth on one side close to the rotating ring, and the rotating ring is provided with plane spiral teeth meshing with the arc-shaped teeth on one side close to the guide chuck; The driving member is used to drive the rotating ring to rotate; The dynamic loading mechanism is installed on the base, and the dynamic loading mechanism is used for detecting the torsion stress and tensile stress of the bolt to be tested.

[0007] By adopting the above technical scheme, during the torsion and tension detection process of the bolt to be tested, the bolt to be tested is first inserted into the two transmission rings, and the bolt head and the matching nut of the bolt to be tested are located on the side of the two rotating rings away from each other, and then, the driving member is adjusted, and the driving member drives the rotating ring to rotate, and the rotating ring drives the plane spiral teeth to rotate synchronously. Since the plane spiral teeth are meshed with the arc teeth, the rotating ring drives the guide clamp to slide along the guide groove, and slides until the guide clamp abuts against the bolt rod of the bolt to be tested, so as to achieve limited clamping of the bolt to be tested, and then the dynamic load mechanism is adjusted, and the dynamic load mechanism detects the torsion stress and tensile stress of the bolt to be tested; the designed torsion and tension testing machine facilitates limited clamping of bolts to be tested of different sizes and specifications through the clamping mechanism, avoids the disassembly and replacement of the bolt clamping joint and the matching nut clamping joint in the prior art, improves the limited clamping efficiency of the bolt to be tested, and then improves the torsion and tension detection efficiency of the bolt to be tested.

[0008] Optionally, the clamping assembly further comprises an anti-deflection member for preventing the bolt head or the mating nut of the bolt to be tested from rotating; The anti-deflection member includes a double-headed cylinder, two first mounting seats, two pressure sensors and two abutting blocks; The double-headed cylinder is mounted on the fixing ring; The piston rod of the double-headed cylinder is fixedly connected to the two first mounting seats respectively; The first mounting seat is fixedly connected to the pressure sensor at a side away from the double-head cylinder; The fixing ring is provided with a sliding groove for the sliding of the abutting block, the sliding groove is arranged along the radial direction of the fixing ring, and the sliding groove penetrates the fixing ring; The two pressing blocks are fixedly connected to the pressure sensors respectively, and the double-headed cylinder drives the pressing blocks to slide along the sliding groove and fit tightly against the opposite side walls of the bolt head of the bolt to be tested or the opposite side walls of the matching nut.

[0009] By adopting the above technical solution, the double-headed cylinder is adjusted, and the piston rod of the double-headed cylinder drives the first mounting seat to move, the first mounting seat drives the pressure sensor to move, and the pressure sensor drives the clamping block to slide along the sliding groove until the two clamping blocks are tightly fitted with the opposite side walls of the bolt head of the bolt to be tested, or the two clamping blocks are tightly fitted with the opposite side walls of the mating nut, thereby realizing the anti-deflection of the bolt to be tested; the designed anti-deflection component is convenient for limiting the clamping of the bolt head and the mating nut of the bolt to be tested, so as to avoid deflection of the bolt to be tested during the torsion and tension detection process.

[0010] Optionally, the driving member includes a rotating motor, a second mounting seat, a torque sensor, a transmission rod, a driving bevel gear and a driven bevel gear ring; The rotating motor is mounted on the fixing ring, and the axial direction of the output shaft of the rotating motor is perpendicular to the plane where the top wall of the base is located; The output shaft of the rotating motor is fixedly connected to the second mounting seat; The torque sensor is mounted on a side of the second mounting base away from the rotating motor; One end of the transmission rod is fixedly connected to the torque sensor, and the other end is coaxially fixed to the active bevel gear, and the active bevel gear extends into the inner cavity of the fixing ring; The driven bevel gear ring is coaxially fixed with the rotating ring, and the driven bevel gear ring is meshed with the driving bevel gear.

[0011] By adopting the above technical solution, the rotating motor is adjusted, and the output shaft of the rotating motor drives the second mounting seat to move, the second mounting seat drives the torque sensor to move, the torque sensor drives the transmission rod to move, the transmission rod drives the active bevel gear to rotate, the active bevel gear drives the driven bevel gear ring to rotate, the driven bevel gear ring drives the rotating ring to rotate synchronously, and the rotating ring drives the plane spiral teeth to rotate synchronously. Since the plane spiral teeth are meshed with the arc teeth, the rotating ring drives the guide chuck to slide along the guide groove, slides until the guide chuck abuts against the bolt rod of the bolt to be measured, so as to achieve limited clamping of the bolt to be measured, and then adjusts the dynamic load mechanism, which detects the torsional stress and tensile stress of the bolt to be measured; the designed driving member is convenient for applying force to the rotating ring, and then convenient for applying force to the guide chuck, so as to achieve limited clamping of bolts to be measured with different sizes and specifications.

[0012] Optionally, the dynamic loading mechanism includes a tension-compression loading assembly for detecting the tensile stress of the bolt to be tested, and the tension-compression loading assembly includes a guide rail, a hydraulic cylinder, a third mounting seat, and a tension-compression sensor; The guide rail is installed on the base, and the guide rail is arranged along the axial direction of the first fixing ring; One of the supports is slidably connected to the guide rail; The hydraulic cylinder is installed on the base, and the piston rod of the hydraulic cylinder is arranged along the length direction of the guide rail. The piston rod of the hydraulic cylinder is fixedly connected to the third mounting seat, and the third mounting seat is fixedly connected to the tension and pressure sensor on the side away from the hydraulic cylinder. The tension and pressure sensor is fixedly connected to the support that is slidably connected to the guide rail on the side away from the third mounting seat.

[0013] By adopting the above technical scheme, after the bolt to be tested is limited and clamped, the hydraulic cylinder is adjusted, and the piston rod of the hydraulic cylinder drives the third mounting seat to move, the third mounting seat drives the tension and pressure sensor to move, and the tension and pressure sensor drives the support to move along the guide rail, so as to adjust the distance between two adjacent supports, thereby realizing the limited clamping of bolts to be tested of different lengths; the designed tension and compression loading assembly is convenient for applying axial force to the bolt to be tested, thereby facilitating the tensile stress detection of the bolt to be tested.

[0014] Optionally, the dynamic loading mechanism further includes a torque loading assembly for detecting the torque stress of the bolt to be tested, and the torque loading assembly includes a rotating seat, a rotating bearing platform, a torque sensor, a fourth mounting seat and a driving motor; The rotating seat is mounted on the support which can move along the guide rail; The rotating bearing platform is located at a side of the fixing ring away from the other fixing ring, and the rotating bearing platform is rotatably connected to the rotating seat; The torque sensor is installed on a side of the rotating bearing platform away from the fixing ring; The fourth mounting seat is mounted on a side of the torque sensor away from the rotating bearing platform; The driving motor is mounted on the support which can be along the guide rail, and the fourth mounting seat is coaxially fixed with the output shaft of the driving motor on a side away from the torque sensor.

[0015] By adopting the above technical solution, the driving motor is adjusted, and the output shaft of the driving motor drives the fourth mounting seat to rotate synchronously, the fourth mounting seat drives the torque sensor to move, the torque sensor drives the rotating bearing platform to rotate along the rotating seat, the rotating bearing platform drives the fixed ring and the rotating ring to rotate synchronously, and the fixed ring drives the abutment block to rotate synchronously, thereby realizing the detection of the torque stress of the bolt to be tested; the designed torque loading component is convenient for applying a torsional force to the bolt to be tested, and thus facilitates the torque stress detection of the bolt to be tested.

[0016] Optionally, it further includes a data acquisition mechanism, which includes a first controller and a data display. The data display and the first controller are installed on the base, and the data display, the tension and pressure sensor, the torque sensor and the first controller are electrically connected.

[0017] By adopting the above technical solution, the tension and pressure sensor and the torque sensor perform torsion and tensile stress detection on the bolt to be tested, and transmit the stress detection data to the first controller, and then transmit it to the data display through the controller, so as to realize the stress detection data collection of the bolt to be tested; the designed data collection mechanism is convenient for the stress detection data collection of the bolt to be tested.

[0018] Optionally, the clamping assembly further includes a second controller, which is mounted on the base, and the second controller, the pressure sensor, the torque sensor, the rotary motor and the double-head cylinder are electrically connected.

[0019] By adopting the above technical scheme, during the torsion and tension detection process of the bolt to be tested, the bolt to be tested is firstly inserted into the two transmission rings, and the bolt head and the nut of the bolt to be tested are located on the side of the two rotating rings away from each other, and then, the rotating motor is adjusted, the output shaft of the rotating motor drives the second mounting seat to move, the second mounting seat drives the torque sensor to move, the torque sensor drives the transmission rod to move, the transmission rod drives the active bevel gear to rotate, the active bevel gear drives the driven bevel gear ring to rotate, the driven bevel gear ring drives the rotating ring to rotate synchronously, the rotating ring drives the plane spiral teeth to rotate synchronously, the rotating ring drives the guide chuck to slide along the guide groove, and when the guide chuck slides to abut against the bolt rod of the bolt to be tested, the torque sensor transmits the data signal The pressure sensor is input to the second controller, and the second controller sends a command to the rotating motor, and the rotating motor stops working; then, the double-headed cylinder is adjusted, and the piston rod of the double-headed cylinder drives the first mounting seat to move, and the first mounting seat drives the pressure sensor to move, and the pressure sensor drives the clamping block to slide along the sliding groove until the two clamping blocks are tightly fitted with the opposite side walls of the bolt head of the bolt to be tested, or the two clamping blocks are tightly fitted with the opposite side walls of the matching nut, and the pressure sensor transmits the data signal to the second controller, and the second controller sends a command to the double-headed cylinder, and the double-headed cylinder stops working; the designed second controller facilitates the automatic clamping of the bolt to be tested, and then realizes the automatic limiting of the bolt to be tested, thereby improving the installation efficiency of the bolt to be tested.

[0020] Optionally, it also includes a feeding mechanism for feeding the bolts to be tested, the feeding mechanism including a sliding seat, a transverse cylinder, a longitudinal cylinder, a clamping head and a limit assembly; The base is provided with a sliding groove for the sliding seat to slide, and the sliding groove is arranged along the axial direction of the fixing ring; The transverse cylinder is installed on the base, and the transverse cylinder drives the sliding seat to slide along the sliding groove; The longitudinal cylinder is mounted on the sliding seat, and the axial direction of the piston rod of the longitudinal cylinder is parallel to the plane where the base is located; The clamping head is mounted on the piston rod of the longitudinal cylinder; The limiting assembly is installed on the clamping head, and the limiting assembly is used to fix the bolt head of the bolt to be tested.

[0021] By adopting the above technical scheme, the bolt head of the bolt to be tested is installed on the clamping head. At this time, the bolt to be tested is in a horizontal state. Then, the longitudinal cylinder is adjusted, and the piston rod of the longitudinal cylinder drives the clamping head to rise and fall, and the clamping head drives the bolt to be tested to rise and fall synchronously until the axis of the bolt to be tested and the axis of the rotating ring tend to be collinear. Then, the transverse cylinder is adjusted, and the piston rod of the transverse cylinder drives the sliding seat to slide along the sliding groove until the bolt rod of the bolt to be tested passes through the inner cavity of the rotating ring, thereby realizing automatic loading of the bolt to be tested. The designed loading mechanism facilitates automatic loading of the bolt to be tested, improves the installation efficiency of the bolt to be tested, and thereby improves the torsion and tension detection efficiency of the bolt to be tested.

[0022] Optionally, the limiting assembly includes a plurality of abutment blocks and a spring connected to each of the abutment blocks; The clamping head is provided with an accommodating cavity for accommodating the bolt head of the bolt to be tested; The clamping head is provided with a guide groove for the sliding movement of the abutment block, and the guide groove is arranged along the radial direction of the clamping head; The spring is installed in the guide groove, and the spring drives the abutment block to move toward one side of the clamping head axis.

[0023] By adopting the above technical scheme, the bolt head of the bolt to be tested is placed opposite to the accommodating cavity, and then force is applied to the bolt to be tested. When the bolt head of the bolt to be tested contacts the abutment block, the abutment block applies force to the spring, the spring is compressed, and the bolt to be tested continues to move until the bolt head of the bolt to be tested is in contact with the clamping head, and the clamping block is in contact with the side wall of the bolt head of the bolt to be tested, thereby realizing elastic clamping of the bolt to be tested. At this time, the bolt to be tested is in a horizontal state, and then the longitudinal cylinder is adjusted, and the piston rod of the longitudinal cylinder drives the clamping head to rise and fall, and the clamping head drives the bolt to be tested to rise and fall synchronously until the axis of the bolt to be tested and the rotating ring tend to be collinear, and then the transverse cylinder is adjusted, and the piston rod of the transverse cylinder drives the sliding seat to slide along the sliding groove until the bolt rod of the bolt to be tested passes through the inner cavity of the rotating ring, thereby realizing automatic loading of the bolt to be tested; the designed elastic abutment block is convenient for applying force to the bolt head of the bolt to be tested, thereby realizing limited clamping of the bolt to be tested.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The designed torsion tensile testing machine, through the second controller and the clamping mechanism, is convenient for automatically limiting and clamping the bolts to be tested of different sizes and specifications, avoiding the disassembly and replacement of the bolt clamping joint and the nut clamping joint in the prior art, improving the limiting clamping efficiency of the bolts to be tested, and thus improving the torsion and tension detection efficiency of the bolts to be tested; 2. The designed torsion tensile testing machine can easily perform tensile stress detection on the bolts to be tested separately through the dynamic load mechanism, and can also perform torque stress detection separately. At the same time, it can also perform synchronous detection of tensile stress and torque stress; 3. The designed torsion tensile testing machine facilitates automatic loading of the bolts to be tested through the loading mechanism, thereby improving the installation efficiency of the bolts to be tested, and further improving the torsion tensile testing efficiency of the bolts to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the torsion tensile testing machine of Example 1 of the present application; Figure 2 is a cross-sectional view of the torsion tensile testing machine of Example 1 of the present application; Figure 3 yes Figure 2 A magnified schematic diagram of part A; Figure 4 yes Figure 2 An enlarged schematic diagram of part B; Figure 5 is a cross-sectional view of the torsion tensile testing machine of Example 1 of the present application, which is intended to illustrate the limit assembly; Figure 6 is a cross-sectional view of the torsion tensile testing machine of Example 1 of the present application, which is intended to illustrate the anti-deflection member; Figure 7 yes Figure 6 Enlarged schematic diagram of part C of FIG.

[0026] Description of reference numerals: 1. base; 2. feeding mechanism; 21. sliding groove; 22. horizontal cylinder; 23. sliding seat; 24. longitudinal cylinder; 25. clamping head; 26. limit assembly; 261. guide groove; 262. abutment block; 263. spring; 27. accommodating chamber; 3. clamping mechanism; 31. clamping assembly; 311. support; 312. fixing ring; 313. rotating ring; 314. guide slide groove; 315. guide chuck; 316. driving member; 3161. rotating motor; 3162. second mounting seat; 3163. torque sensor; 3164. transmission rod; 3165. driving bevel gear; 3166 , driven bevel gear ring; 317, anti-deflection member; 3171, double-headed cylinder; 3172, first mounting seat; 3173, pressure sensor; 3174, tightening block; 3175, sliding groove; 318, second controller; 4, dynamic load mechanism; 41, torque loading assembly; 411, driving motor; 412, fourth mounting seat; 413, torque sensor; 414, rotating bearing platform; 415, rotating seat; 42, tension and compression loading assembly; 421, hydraulic cylinder; 422, third mounting seat; 423, tension and pressure sensor; 424, guide rail; 5, data acquisition mechanism; 51, data display; 52, first controller. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-7 This application is described in further detail.

[0028] The embodiment of the present application discloses a torsion tensile testing machine.

[0029] Reference Figure 1 and Figure 2 A torsion tensile testing machine includes a base 1, a feeding mechanism 2, a clamping mechanism 3, a dynamic load mechanism 4 and a data acquisition mechanism 5. The feeding mechanism 2, the clamping mechanism 3, the dynamic load mechanism 4 and the data acquisition mechanism 5 are all installed on the base 1, and the feeding mechanism 2, the clamping mechanism 3 and the dynamic load mechanism 4 are sequentially distributed along the length direction of the base 1. The feeding mechanism 2 is used for automatically feeding the bolts to be tested, and the bolts to be tested are transported to the clamping mechanism 3 through the feeding mechanism 2, and then the bolts to be tested are limitedly clamped by the clamping mechanism 3, and then the torsion stress and tensile stress of the bolts to be tested are detected by the dynamic load mechanism 4. After the detection is completed, the corresponding data signal is transmitted to the data acquisition mechanism 5 to realize the torsion stress and tensile stress detection of the bolts to be tested.

[0030] Reference Figure 2 and Figure 3The feeding mechanism 2 includes a sliding seat 23, a transverse cylinder 22, a longitudinal cylinder 24, a clamping head 25 and a limit assembly 26; a sliding groove 21 for sliding the sliding seat 23 is opened on the base 1, and the sliding groove 21 is arranged along the length direction of the base 1, and the movement direction of the sliding seat 23 is parallel to the axial direction of the bolt to be measured; the transverse cylinder 22 is installed on the base 1, and the transverse cylinder 22 drives the sliding seat 23 to slide along the sliding groove 21. In this embodiment, the transverse cylinder 22 is fixed to the base 1 by bolts; the longitudinal cylinder 24 is installed on the sliding seat 23, and the axial direction of the piston rod of the longitudinal cylinder 24 is parallel to the plane where the base 1 is located. In this embodiment, the longitudinal cylinder 24 is fixed to the sliding seat 23 by bolts, so that the longitudinal cylinder 24 and the sliding seat 23 can slide synchronously; the clamping head 25 is installed on the piston rod of the longitudinal cylinder 24. In this embodiment, the clamping head 25 and the piston rod of the longitudinal cylinder 24 are fixedly connected by a connecting joint.

[0031] Reference Figure 4 and Figure 5 The limit assembly 26 is installed on the clamping head 25, and the limit assembly 26 is used to fix the bolt head of the bolt to be tested. The limit assembly 26 includes a plurality of abutment blocks 262 and a spring 263 connected to each abutment block 262. The clamping head 25 is provided with a receiving cavity 27 for accommodating the bolt head of the bolt to be tested. In this embodiment, the cross-section of the receiving cavity 27 is arranged in a regular hexagonal shape. The clamping head 25 is provided with a guide groove 261 for the sliding movement of the abutment block 262. In this application, three or six guide grooves 261 are provided, as long as the limit tightening of the bolt head to be tested is achieved. In this embodiment, six guide grooves 261 are provided, and the six guide grooves 314 are evenly distributed along the circumferential direction of the clamping head 25. , and each guide slot 314 is located on the side wall of the accommodating cavity 27, and the guide slot 261 is arranged along the radial direction of the clamping head 25; the spring 263 is installed in the guide slot 261, one end of the spring 263 is fixedly engaged with the clamping head 25, and the other end is fixedly engaged with the abutment block 262, and the spring 263 drives the abutment block 262 to move toward one side of the axis of the clamping head 25, so as to achieve the limiting tightening of the bolt head of the bolt to be tested; in addition, in this embodiment, the abutment block 262 is arranged in a right-angle trapezoid, and the inclined side wall of the abutment block 262 faces the bolt head of the bolt to be tested, so as to gradually apply force to the abutment block 262 during the clamping process of the bolt to be tested, so as to achieve the elastic tightening of the bolt head of the bolt to be tested.

[0032] Reference Figure 2 and Figure 4The clamping mechanism 3 includes two groups of clamping assemblies 31, and the two groups of clamping mechanisms 3 are respectively used for limiting and fixing the head end of the bolt to be tested and the tail end of the bolt to be tested, and the two groups of clamping mechanisms 3 are distributed along the length direction of the base 1; the clamping assembly 31 includes a support 311, a fixed ring 312, a rotating ring 313, a second controller 318, a driving member 316, an anti-deflection member 317 and a plurality of guide clamps 315; the support 311 is installed on the base 1, and the support 311 close to the sliding seat 23 in this embodiment is fixedly connected to the base 1 by bolts, and the support 311 away from the sliding seat 23 is slidingly connected to the base 1; the fixed ring 312 is fixedly connected to the support 311, and the fixed ring 312 in the two groups of clamping assemblies 31 are coaxially arranged; the rotating ring 313 is concentrically arranged with the fixed ring 312, and the rotating ring 313 is rotatably connected with the fixed ring 312; the fixed ring A guide slot 314 for guiding the sliding movement of the guide chuck 315 is provided on one side of 312 close to the rotating ring 313. In the present application, the guide slots 314 can be three, four, or five, as long as the bolt rod of the bolt to be tested can be limited and fixed. In the present embodiment, three guide slots 314 are provided, and the three guide slots 314 are evenly distributed along the circumferential direction of the fixed ring 312. Moreover, the number of the guide slots 314 and the guide chuck 315 is the same, and each guide slot 314 is provided along the radial direction of the fixed ring 312; the guide chuck 315 is provided with arc teeth on one side close to the rotating ring 313. In the present embodiment, the guide chuck 315 is integrally connected with the arc teeth, and the rotating ring 313 is provided with planar spiral teeth meshing with the arc teeth on one side close to the guide chuck 315. In the present embodiment, the rotating ring 313 is integrally connected with the planar spiral teeth.

[0033] Reference Figure 6 and Figure 7, the anti-deflection member 317 is used to prevent the bolt head or the matching nut of the bolt to be tested from rotating; the anti-deflection member 317 includes a double-headed cylinder 3171, two first mounting seats 3172, two pressure sensors 3173 and two tightening blocks 3174; the double-headed cylinder 3171 is installed on the fixing ring 312. In this embodiment, the double-headed cylinder 3171 is fixed to the fixing ring 312 by bolts, and the piston rod of the double-headed cylinder 3171 is arranged horizontally; the piston rod of the double-headed cylinder 3171 is fixedly connected to the two first mounting seats 3172 respectively. In this embodiment, the piston rod of the double-headed cylinder 3171 is fixedly connected to the first mounting seat 3172 by a flange; the first mounting seat 3172 is away from the double-headed cylinder One side of the cylinder 3171 is fixedly connected to the pressure sensor 3173, and in this embodiment, the first mounting seat 3172 is bolted to the pressure sensor 3173; a sliding groove 3175 for the sliding movement of the clamping block 3174 is opened on the fixing ring 312, and the sliding groove 3175 is arranged along the radial direction of the fixing ring 312, and the sliding groove 3175 is arranged through the fixing ring 312; the two clamping blocks 3174 are respectively fixedly connected to the pressure sensor 3173, and the double-headed cylinder 3171 drives the clamping blocks 3174 to slide along the sliding groove 3175, and fit and tighten with the opposite side walls of the bolt head of the bolt to be tested or the opposite side walls of the mating nut, so as to realize the anti-deflection of the bolt head or the mating nut of the bolt to be tested.

[0034] Reference Figure 2 and Figure 4, the driving member 316 is used to drive the rotating ring 313 to rotate, and the driving member 316 includes a rotating motor 3161, a second mounting seat 3162, a torque sensor 3163, a transmission rod 3164, an active bevel gear 3165 and a driven bevel gear ring 3166; the rotating motor 3161 is mounted on the fixed ring 312, and the axial direction of the output shaft of the rotating motor 3161 is perpendicular to the plane where the top wall of the base 1 is located. In this embodiment, the rotating motor 3161 and the fixed ring 312 are fixed by bolts, and the output shaft of the rotating motor 3161 is arranged along the radial direction of the fixed ring 312; the output shaft of the rotating motor 3161 is fixedly connected to the second mounting seat 3162. In this embodiment, the output shaft of the rotating motor 3161 is fixedly connected to the second mounting seat 3162 through a coupling; the torque sensor 3163 is installed on the second mounting seat 3162 away from the rotating motor 3 On one side of 161, in this embodiment, the torque sensor 3163 is bolted to the second mounting seat 3162; one end of the transmission rod 3164 is fixedly connected to the torque sensor 3163, and the other end is coaxially fixed to the active bevel gear 3165, and the active bevel gear 3165 extends into the inner cavity of the fixing ring 312. In this embodiment, the transmission rod 3164 is coaxially arranged with the output shaft of the rotating motor 3161, and the active bevel gear 3165 is welded to the transmission rod 3164; the driven bevel gear ring 3166 is coaxially fixed with the rotating ring 313, and the driven bevel gear ring 3166 is integrally connected with the rotating ring 313, and the driven bevel gear ring 3166 is meshed with the active bevel gear 3165; the second controller 318 is installed on the base 1, and the second controller 318, the pressure sensor 3173, the torque sensor 3163, the rotating motor 3161 and the double-head cylinder 3171 are electrically connected.

[0035] Reference Figure 1 and Figure 2The dynamic load mechanism 4 includes a torque loading component 41 for detecting the torque stress of the bolt to be tested and a tension and compression loading component 42 for detecting the tensile stress of the bolt to be tested. The tension and compression loading component includes a guide rail 424, a hydraulic cylinder 421, a third mounting seat 422 and a tension and pressure sensor 423; the guide rail 424 is installed on the base 1, and the guide rail 424 is arranged along the axial direction of the first fixing ring 312, and the length direction of the guide rail 424 is the same as the length direction of the base 1, and the support 311 slidably connected to the base 1 is slidably connected to the guide rail 424; the hydraulic cylinder 421 is installed On the base 1, and the piston rod of the hydraulic cylinder 421 is arranged along the length direction of the guide rail 424. In this embodiment, the hydraulic cylinder 421 is fixed to the base 1 by bolts, and the piston rod of the hydraulic cylinder 421 is fixedly connected to the third mounting seat 422. In this embodiment, the third mounting seat 422 is fixedly connected to the tension and pressure sensor 423 on the side away from the hydraulic cylinder 421. In this embodiment, the tension and pressure sensor 423 is connected to the third mounting seat 422 by bolts, and the tension and pressure sensor 423 is fixedly connected to the support 311 slidably connected to the guide rail 424 on the side away from the third mounting seat 422.

[0036] Reference Figure 1 and Figure 2 The torque loading assembly 41 includes a rotating seat 415, a rotating bearing platform 414, a torque sensor 413, a fourth mounting seat 412 and a driving motor 411. The rotating seat 415 is mounted on a support 311 that can be along the guide rail 424. In this embodiment, the rotating seat 415 is fixed to the support 311 by bolts; the rotating bearing platform 414 is located on a side of the fixed ring 312 away from the other fixed ring 312, and the rotating bearing platform 414 is rotatably connected to the rotating seat 415; the torque sensor 413 is mounted on the rotating bearing platform 414 away from the fixed ring 312 One side, and in the present embodiment, the torque sensor 413 is bolted to the rotating support platform 414; the fourth mounting seat 412 is installed on the torque sensor 413 away from the side of the rotating support platform 414, and in the present embodiment, the fourth mounting seat 412 is installed and bolted to the torque sensor 413; the driving motor 411 is installed on the support 311 which can be along the guide rail 424, and in the present embodiment, the driving motor 411 is fixed to the base 1 by bolts, and the fourth mounting seat 412 is coaxially fixed to the output shaft of the driving motor 411 on the side away from the torque sensor 413.

[0037] Reference Figure 1 and Figure 2 The data acquisition mechanism 5 includes a first controller 52 and a data display 51. The data display 51 and the first controller 52 are installed on the base 1, and the data display 51, the tension and pressure sensor 423, the torque sensor 413 and the first controller 52 are electrically connected.

[0038] The working principle of the torsion tensile testing machine of the embodiment of the present application is as follows: the bolt head of the bolt to be tested is placed directly opposite to the accommodating cavity 27, and then force is applied to the bolt to be tested. When the bolt head of the bolt to be tested contacts the inclined side wall of the abutment block 262, the component force of the bolt head of the bolt to be tested acting on the abutment block 262 drives the abutment block 262 to slide along the guide groove 261, and the spring 263 is in a compressed state. The bolt to be tested continues to move until the bolt head of the bolt to be tested fits the clamping head 25, and the abutment block 262 is in contact with the side wall of the bolt head of the bolt to be tested. The wall is fitted and pressed tightly to realize elastic clamping of the bolt to be tested. At this time, the bolt to be tested is in a horizontal state; then, the longitudinal cylinder 24 is adjusted, and the piston rod of the longitudinal cylinder 24 drives the clamping head 25 to rise and fall, and the clamping head 25 drives the bolt to be tested to rise and fall synchronously until the axis of the bolt to be tested and the rotating ring 313 tend to be collinear, and then the transverse cylinder 22 is adjusted, and the piston rod of the transverse cylinder 22 drives the sliding seat 23 to slide along the sliding groove 21 until the bolt rod of the bolt to be tested passes through the inner cavity of the two rotating rings 313, thereby realizing automatic loading of the bolt to be tested.

[0039] The rotating motor 3161 is adjusted, and the output shaft of the rotating motor 3161 drives the second mounting seat 3162 to move, and the second mounting seat 3162 drives the torque sensor 3163 to move, and the torque sensor 3163 drives the transmission rod 3164 to move, and the transmission rod 3164 drives the active bevel gear 3165 to rotate, and the active bevel gear 3165 drives the driven bevel gear ring 3166 to rotate, and the driven bevel gear ring 3166 drives the rotating ring 313 to rotate synchronously, and the rotating ring 313 drives the plane spiral teeth to rotate synchronously, and the rotating ring 313 drives the guide chuck 315 to slide along the guide groove 314, and when the guide chuck 315 slides to the bolt rod of the bolt to be tested, the hydraulic cylinder 421 is adjusted, and the piston rod of the hydraulic cylinder 421 drives the third mounting seat 422 to move, and the third mounting seat 422 drives The pull pressure sensor 423 moves, and the pull pressure sensor 423 drives the support 311 to move along the guide rail 424. The support 311 drives the fixed ring 312 and the rotating ring 313 to move synchronously. The fixed ring 312 drives the guide clamp 315 to move synchronously until the guide clamps 315 on the two fixed rings 312 are respectively close to one side of the bolt head and the matching nut of the bolt to be tested; then the rotating motor 3161 is adjusted, and the rotating ring 313 drives the guide clamp 315 to continue to slide along the guide groove 314, and slides until the guide clamp 315 is in contact with the bolt rod of the bolt to be tested, and the torque sensor 3163 transmits the data signal to the second controller 318, and the second controller 318 sends a command to the rotating motor 3161, and the rotating motor 3161 stops working.

[0040] Adjust the double-headed cylinder 3171, the piston rod of the double-headed cylinder 3171 drives the first mounting seat 3172 to move, the first mounting seat 3172 drives the pressure sensor 3173 to move, the pressure sensor 3173 drives the clamping block 3174 to slide along the sliding groove 3175, until the two clamping blocks 3174 are tightly fitted with the opposite side walls of the bolt head of the bolt to be tested, or the two clamping blocks 3174 are tightly fitted with the opposite side walls of the matching nut, the pressure sensor 3173 transmits the data signal to the second controller 318, the second controller 318 sends a command to the double-headed cylinder 3171, the double-headed cylinder 3171 stops working, and the limit clamping of the bolt to be tested is achieved; adjust the transverse cylinder 22, the piston rod of the transverse cylinder 22 drives the sliding seat 23 to slide along the sliding groove 21, until the clamping head 25 is completely separated from the bolt to be tested.

[0041] After the bolt to be tested is clamped, the hydraulic cylinder 421 is adjusted, and the piston rod of the hydraulic cylinder 421 drives the third mounting seat 422 to move, and the third mounting seat 422 drives the tension pressure sensor 423 to move, and the tension pressure sensor 423 drives the support 311 to move along the guide rail 424, and the support 311 drives the rotating seat 415, the rotating bearing platform 414, the fixed ring 312 and the rotating ring 313 to move synchronously, and the fixed ring 312 applies force to the guide clamp 315, and the guide clamp 315 applies force to the nut, and the tension pressure sensor 423 transmits the signal to the first controller 52, and transmits it to the data display through the first controller 52. indicator 51; adjust the driving motor 411, the output shaft of the driving motor 411 drives the fourth mounting seat 412 to rotate synchronously, the fourth mounting seat 412 drives the torque sensor 413 to move, the torque sensor 3163 drives the rotating bearing platform 414 to rotate along the rotating seat 415, the rotating bearing platform 414 drives the fixed ring 312 and the rotating ring 313 to rotate synchronously, the fixed ring 312 drives the abutment block 262 to rotate synchronously, the tension and pressure sensor 423 transmits the stress detection data to the first controller 52, and transmits it to the data display 51 through the first controller 52, so as to realize the stress detection data collection of the bolt to be tested.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A torsion tensile testing machine, characterized in that: It comprises a base (1), a clamping mechanism (3) and a dynamic carrying mechanism (4); The clamping mechanism (3) comprises two groups of clamping assemblies (31), and the two groups of clamping mechanisms (3) are respectively used to limit and fix the head end and the tail end of the bolt to be tested; The clamping assembly (31) comprises a support (311), a fixed ring (312), a rotating ring (313), a driving member (316) and a plurality of guide clamps (315); The support (311) is installed on the base (1); The fixing ring (312) is fixedly connected to the support (311), and the fixing rings (312) in the two groups of the clamping assemblies (31) are coaxially arranged; The rotating ring (313) and the fixed ring (312) are arranged concentrically, and the rotating ring (313) and the fixed ring (312) are rotatably connected; A guide groove (314) for sliding movement of the guide chuck (315) is provided on one side of the fixed ring (312) close to the rotating ring (313); the guide groove (314) is arranged along the radial direction of the fixed ring (312), and a plurality of the guide grooves (314) are evenly distributed along the circumferential direction of the fixed ring (312); The guide chuck (315) is provided with arc-shaped teeth on one side close to the rotating ring (313), and the rotating ring (313) is provided with plane spiral teeth meshing with the arc-shaped teeth on one side close to the guide chuck (315); The driving member (316) is used to drive the rotating ring (313) to rotate; The dynamic loading mechanism (4) is installed on the base (1), and the dynamic loading mechanism (4) is used for detecting the torsional stress and tensile stress of the bolt to be tested.

2. The torsion tensile testing machine according to claim 1, characterized in that: The clamping assembly (31) further comprises an anti-deflection member (317) for preventing the bolt head or the mating nut of the bolt to be tested from rotating; The anti-deflection member (317) comprises a double-headed cylinder (3171), two first mounting seats (3172), two pressure sensors (3173) and two abutting blocks (3174); The double-headed cylinder (3171) is mounted on the fixing ring (312); The piston rod of the double-headed cylinder (3171) is fixedly connected to the two first mounting seats (3172) respectively; The first mounting seat (3172) is fixedly connected to the pressure sensor (3173) at a side away from the double-head cylinder (3171); The fixing ring (312) is provided with a sliding groove (3175) for the pressing block (3174) to slide, the sliding groove (3175) is arranged along the radial direction of the fixing ring (312), and the sliding groove (3175) penetrates the fixing ring (312); The two clamping blocks (3174) are respectively fixedly connected to the pressure sensor (3173), and the double-headed cylinder (3171) drives the clamping blocks (3174) to slide along the sliding groove (3175) and fit tightly against the opposite side walls of the bolt head of the bolt to be tested or the opposite side walls of the matching nut.

3. The torsion tensile testing machine according to claim 2, characterized in that: The driving member (316) comprises a rotating motor (3161), a second mounting seat (3162), a torque sensor (3163), a transmission rod (3164), a driving bevel gear (3165) and a driven bevel gear ring (3166); The rotating motor (3161) is mounted on the fixing ring (312), and the axial direction of the output shaft of the rotating motor (3161) is perpendicular to the plane where the top wall of the base (1) is located; The output shaft of the rotating motor (3161) is fixedly connected to the second mounting seat (3162); The torque sensor (3163) is mounted on a side of the second mounting seat (3162) away from the rotating motor (3161); One end of the transmission rod (3164) is fixedly connected to the torque sensor (3163), and the other end is coaxially fixed to the active bevel gear (3165), and the active bevel gear (3165) extends into the inner cavity of the fixing ring (312); The driven bevel gear ring (3166) is coaxially fixed with the rotating ring (313), and the driven bevel gear ring (3166) is meshed with the driving bevel gear (3165).

4. The torsion tensile testing machine according to claim 1, characterized in that: The dynamic loading mechanism (4) comprises a tension-compression loading assembly (42) for detecting the tensile stress of a bolt to be tested, and the tension-compression loading assembly comprises a guide rail (424), a hydraulic cylinder (421), a third mounting seat (422) and a tension-compression sensor (423); The guide rail (424) is installed on the base (1), and the guide rail (424) is arranged along the axial direction of the first fixing ring (312); One of the supports (311) is slidably connected to the guide rail (424); The hydraulic cylinder (421) is mounted on the base (1), and the piston rod of the hydraulic cylinder (421) is arranged along the length direction of the guide rail (424), the piston rod of the hydraulic cylinder (421) is fixedly connected to the third mounting seat (422), the third mounting seat (422) is fixedly connected to the tension and pressure sensor (423) on a side away from the hydraulic cylinder (421), and the tension and pressure sensor (423) is fixedly connected to the support (311) slidably connected to the guide rail (424) on a side away from the third mounting seat (422).

5. The torsion tensile testing machine according to claim 4, characterized in that: The dynamic loading mechanism (4) further comprises a torque loading assembly (41) for detecting the torque stress of the bolt to be tested, wherein the torque loading assembly (41) comprises a rotating seat (415), a rotating bearing platform (414), a torque sensor (413), a fourth mounting seat (412) and a driving motor (411); The rotating seat (415) is installed on the support (311) which can be along the guide rail (424); The rotating bearing platform (414) is located on a side of the fixing ring (312) away from the other fixing ring (312), and the rotating bearing platform (414) is rotatably connected to the rotating seat (415); The torque sensor (413) is installed on a side of the rotating bearing platform (414) away from the fixing ring (312); The fourth mounting seat (412) is mounted on a side of the torque sensor (413) away from the rotating bearing platform (414); The driving motor (411) is mounted on the support (311) which can be along the guide rail (424), and the fourth mounting seat (412) is coaxially fixed with the output shaft of the driving motor (411) on a side away from the torque sensor (413).

6. The torsion tensile testing machine according to claim 5, characterized in that: The device also includes a data acquisition mechanism (5), wherein the data acquisition mechanism (5) includes a first controller (52) and a data display (51), wherein the data display (51) and the first controller (52) are mounted on the base (1), and the data display (51), the tension and pressure sensor (423), the torque sensor (413) and the first controller (52) are electrically connected.

7. The torsion tensile testing machine according to claim 3, characterized in that: The clamping assembly (31) also includes a second controller (318), which is installed on the base (1), and the second controller (318), the pressure sensor (3173), the torque sensor (3163), the rotating motor (3161) and the double-head cylinder (3171) are electrically connected.

8. The torsion tensile testing machine according to claim 1, characterized in that: It also includes a loading mechanism (2) for loading the bolts to be tested, the loading mechanism (2) including a sliding seat (23), a transverse cylinder (22), a longitudinal cylinder (24), a clamping head (25) and a limit assembly (26); The base (1) is provided with a sliding groove (21) for the sliding seat (23) to slide, and the sliding groove (21) is arranged along the axial direction of the fixing ring (312); The transverse cylinder (22) is installed on the base (1), and the transverse cylinder (22) drives the sliding seat (23) to slide along the sliding groove (21); The longitudinal cylinder (24) is mounted on the sliding seat (23), and the axial direction of the piston rod of the longitudinal cylinder (24) is parallel to the plane where the base (1) is located; The clamping head (25) is mounted on the piston rod of the longitudinal cylinder (24); The limiting assembly (26) is installed on the clamping head (25), and the limiting assembly (26) is used to fix the bolt head of the bolt to be tested.

9. The torsion tensile testing machine according to claim 8, characterized in that: The limiting assembly comprises a plurality of abutment blocks (262) and a spring (263) connected to each of the abutment blocks (262); The clamping head (25) is provided with an accommodating cavity (27) for accommodating the bolt head of the bolt to be tested; The clamping head (25) is provided with a guide groove (261) for the abutment block (262) to slide, and the guide groove (261) is arranged along the radial direction of the clamping head (25); The spring (263) is installed in the guide groove (261), and the spring (263) drives the abutment block (262) to move toward one side of the axis of the clamping head (25).

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