A nondestructive testing device for tensile strength of steel

Abstract

The present invention relates to the technical field of steel material testing, and specifically to a non-destructive testing device for tensile strength of steel material, comprising a numerically controlled machine tool, wherein a placing table is fixedly connected to the surface of the numerically controlled machine tool, a support plate is fixedly connected to the surface of the numerically controlled machine tool, a clutch mechanism is provided inside the numerically controlled machine tool, a disconnect mechanism is installed on the surface of the numerically controlled machine tool, a clamping mechanism is slidably connected to the surface of the numerically controlled machine tool, and a tension mechanism is provided inside the clamping mechanism. In the present invention, the grooved roller rotates counterclockwise, so that horizontal tension can be applied to the steel material in the clamping plate during testing, thereby reducing the vertical pressure, preventing the clamping plate from applying excessive pressure, and causing the surface of the steel plate to be depressed. The grooved roller has a high friction force and can relatively pull the steel material again, thereby increasing the efficiency of toughness testing on the original basis.

Description

Technical Field

[0001] The present invention relates to the technical field of steel material detection, in particular to a nondestructive detection device for the tensile strength of steel material. Background Art

[0002] Steel is widely used as a structural material in fields such as construction, bridges, and machinery manufacturing, and is a primary structural material. For example, in high-rise buildings, the steel framework bears the building's own weight and various external loads. Ensuring that the steel's tensile strength meets design requirements is crucial for building safety. For these installed or currently in use steel structures, a nondestructive testing device is needed that can quickly and accurately measure their tensile strength on-site. This can help identify potential safety hazards and ensure the safety and reliability of the structure.

[0003] The existing patent (publication number: CN111610088A) discloses a steel strength testing device for construction inspection, including a box body, a braking structure, a height adjustment structure, a first driving motor, a first straight plate, a first rotating rod, a first rotating rod having a first threaded groove, a slider, a rotating plate on the top of the slider, a driven ring gear, a first driving motor having an active ring gear, the active ring gear is connected to the driven ring gear, a rotating plate having a protrusion, a supporting plate having a guide mechanism, a second driving motor having a second rotating rod, a second rotating rod having a second threaded groove, and a second rotating rod having multiple specifications of clamping. Structure, the box has a controller and a Z-shaped support plate, the Z-shaped support plate has a cylinder, the cylinder has a connecting plate, and the connecting plate has a pressure plate. When the above-mentioned steel strength detection device for construction inspection is rotated to the lowest end through the straight clamping plate, the straight clamping plates are suitable for fixing steel sections or steel plates. The hollow tube connecting cone, the solid cylindrical connecting cone and the straight clamping plate are used in combination, so that the device is suitable for fixing steel of different specifications, so that it is suitable for strength detection of steel of different specifications. However, although this method is accurate and reliable, it is a destructive detection and will cause damage to the steel. For steel structures that have been installed and used or steel products that are not convenient for sampling, the clamping mechanism will cause great pressure on the surface of the steel, which may cause dents on the steel surface. Summary of the Invention

[0004] The object of the present invention is to provide a non-destructive testing device for the tensile strength of steel materials to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned object, the present invention provides the following technical solution: a non-destructive testing device for the tensile strength of steel materials, comprising a CNC machine tool, a placement table fixedly connected to the surface of the CNC machine tool, a support plate fixedly connected to the surface of the CNC machine tool, a clutch mechanism disposed inside the CNC machine tool, a disconnect mechanism mounted on the surface of the CNC machine tool, a clamping mechanism slidably connected to the surface of the CNC machine tool, a tensioning mechanism disposed inside the clamping mechanism, and a stabilizing mechanism rotatably connected to the surface of the clamping mechanism.

[0005] Preferably, the clutch mechanism has a T-slot on its surface, and the T-slot is opened inside the CNC machine tool. The inside of the T-slot is rotatably connected to a screw rod, and the inside of the CNC machine tool is rotatably connected to a driving spline shaft. The surface of the driving spline shaft is slidably connected to a sleeve rod, one end of the sleeve rod is fixedly connected to the first clutch disk, one end of the screw rod is fixedly connected to the second clutch disk, and the surface of the sleeve rod is rotatably connected to a ring.

[0006] Preferably, the disconnect mechanism includes a support rod, which is fixedly connected to the surface of the CNC machine tool, the upper end of the support rod is hinged with a ramp rod, the lower end of the ramp rod is fixedly connected to a triangular block, the upper end of the annular member is fixedly connected to the ramp block, the side of the annular member is fixedly connected to a telescopic rod, the surface of the telescopic end of the telescopic rod is provided with a telescopic spring, and the surface of the telescopic rod is fixedly connected to the ramp rod.

[0007] Preferably, the clamping mechanism includes a T-shaped support, which is threaded on the surface of the screw rod and slidably connected inside the T-slot. The upper end of the T-shaped support is fixedly connected to a trapezoidal block, the interior of the trapezoidal block is fixedly connected to a CNC cylinder, one end of the CNC cylinder is fixedly connected to a T-rod, the interior of the trapezoidal block is rotatably connected to a fan gear, a connecting rod is rotatably connected between the fan gear and the T-rod, the interior of the trapezoidal block is slidably connected to a clamping plate, one end of the clamping plate is fixedly connected to teeth, and the interior of the trapezoidal block is fixedly connected to a limiting slide rail.

[0008] Preferably, the pulling mechanism includes a grooved roller, which is rotatably connected inside the clamping plate, a rotating rod is fixedly connected to the side of the main rotating shaft of the grooved roller, one end of the rotating rod is fixedly connected to an L-shaped rod, a small gear is fixedly connected to the surface of the rotating rod, and a bevel groove is provided on the surface of the support plate.

[0009] Preferably, the stabilizing mechanism includes an arc rod, which is rotatably connected to the surface of the trapezoidal block, and the trapezoidal block is internally rotatably connected to a trigger plate, and the side of the arc rod main rotating shaft is fixedly connected to a special-shaped clamping rod, a spring 1 is connected between the special-shaped clamping rod and the trapezoidal block, and the side of the trapezoidal block is fixedly connected to a slide groove, and the inside of the slide groove is slidably connected to a clamping block, and the surface of the clamping block is provided with an inclined groove, and a spring 2 is provided inside the slide groove, and the surface of the trapezoidal block is fixedly connected to a limiting slide groove, and the inside of the limiting slide groove is slidably connected to an L-shaped rod 2, and a connecting rod 2 is rotatably connected between one end of the trigger plate main rotating shaft and the L-shaped rod 2.

[0010] Preferably, the clamping plate is slidably connected to the surface of the limiting slide rail, and the teeth are engaged with the sector gear.

[0011] Preferably, the plane of the special-shaped clamping rod and the plane of the clamping block are in contact with each other in an initial state, thereby blocking each other.

[0012] In the present invention, the grooved roller rotates counterclockwise, so that horizontal pulling force can be applied to the steel in the clamping plate during detection, thereby reducing the vertical pressure and preventing the clamping plate from bringing excessive pressure, which causes the surface of the steel plate to be depressed. In addition, the grooved roller has a higher friction force and can relatively pull the steel again, which can increase the efficiency of toughness detection on the original basis.

[0013] In the present invention, the front end of the telescopic rod is popped out by the telescopic spring, and at the same time, the annular part is pushed to slide inside the T-slot, and the sleeve rod at the lower end is driven to move at the same time. The sleeve rod slides on the surface of the driving spline shaft, and drives the first clutch disk to slide and separate from the second clutch disk. At this time, the screw rod will lose the power source, and the entire device will stop testing, which is regarded as a qualified test, thereby increasing the service life.

[0014] When the L-shaped rod slides, it slides in the inclined groove opened in the card block and squeezes the inclined surface of the inclined groove, driving the card block to slide. The card block slides inside the slide groove and separates from the special-shaped card rod. The special-shaped card rod rotates through the spring, and at the same time drives the arc rod to rotate clockwise. The arc rod on the clamping plate at the lower end rotates counterclockwise, further clamping the broken steel to prevent the broken steel from flying around and causing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional appearance of the present invention;

[0016] Figure 2 This is a schematic side sectional structural diagram of the present invention;

[0017] Figure 3 Schematic diagram of the internal structure of the CNC machine tool of the present invention;

[0018] Figure 4 Schematic diagram of the clutch mechanism structure of the present invention;

[0019] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure of A in the middle;

[0020] Figure 6 This is a schematic structural diagram of the disconnect mechanism of the present invention;

[0021] Figure 7 This is a schematic structural diagram of the clamping mechanism of the present invention;

[0022] Figure 8 It is a schematic side sectional structural diagram of the clamping mechanism of the present invention;

[0023] Figure 9 It is a schematic diagram of the partial structure of the clamping mechanism of the present invention;

[0024] Figure 10 Schematic diagram of the internal structure of the clamping mechanism of the present invention;

[0025] Figure 11 This is a schematic diagram of the internal cross-sectional structure of the trapezoidal block of the present invention;

[0026] Figure 12 This is a schematic diagram of the side structure of the support plate of the present invention;

[0027] Figure 13 This is a schematic diagram of the stabilizing mechanism structure of the present invention;

[0028] Figure 14 For the present invention Figure 13 Schematic diagram of the enlarged structure of B.

[0029] In the figure: 1. CNC machine tool; 2. Placement table; 3. Support plate; 4. Clutch mechanism; 5. Disconnection mechanism; 6. Clamping mechanism; 7. Tension mechanism; 8. Stabilization mechanism; 41. T-slot; 42. Screw rod; 43. Driving spline shaft; 44. Sleeve rod; 45. First clutch plate; 46. Second clutch plate; 47. Ring member; 51. Support rod; 52. Inclined rod; 53. Triangular block; 54. Inclined block; 55. Telescopic rod; 56. Telescopic spring; 57. Inclined rod; 61. T-shaped support member; 62 , trapezoidal block; 63, CNC cylinder; 64, limit slide; 65, T-bar; 66, sector gear; 67, connecting rod one; 68, clamping plate; 69, teeth; 71, groove roller; 72, rotating rod; 73, L-shaped rod one; 74, small gear; 75, bevel groove; 81, arc rod; 82, trigger plate; 83, special-shaped clamping rod; 84, spring one; 85, slide; 86, clamping block; 87, bevel groove; 88, spring two; 89, limit slide; 810, L-shaped rod two; 811, connecting rod two. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] See also Figures 1 to 14 The present invention provides a technical solution: a non-destructive testing device for the tensile strength of steel, comprising a CNC machine tool 1, a placing table 2 is fixedly connected to the surface of the CNC machine tool 1, a supporting plate 3 is fixedly connected to the surface of the CNC machine tool 1, a clutch mechanism 4 is arranged inside the CNC machine tool 1, a disconnecting mechanism 5 is installed on the surface of the CNC machine tool 1, a clamping mechanism 6 is slidably connected to the surface of the CNC machine tool 1, a tension mechanism 7 is arranged inside the clamping mechanism 6, and a stabilizing mechanism 8 is rotatably connected to the surface of the clamping mechanism 6.

[0032] A T-slot 41 is provided on the surface of the clutch mechanism 4. The T-slot 41 is provided inside the CNC machine tool 1. A screw rod 42 is rotatably connected to the inside of the T-slot 41. A drive spline shaft 43 is rotatably connected to the inside of the CNC machine tool 1. A sleeve rod 44 is slidably connected to the surface of the drive spline shaft 43. One end of the sleeve rod 44 is fixedly connected to a first clutch disc 45. One end of the screw rod 42 is fixedly connected to a second clutch disc 46. A ring member 47 is rotatably connected to the surface of the sleeve rod 44.

[0033] The disconnect mechanism 5 includes a support rod 51, which is fixedly connected to the surface of the CNC machine tool 1. The upper end of the support rod 51 is hinged with an inclined rod 52, and the lower end of the inclined rod 52 is fixedly connected to a triangular block 53. The upper end of the ring member 47 is fixedly connected to an inclined block 54. The side of the ring member 47 is fixedly connected to a telescopic rod 55. The surface of the telescopic end of the telescopic rod 55 is provided with a telescopic spring 56. The surface of the telescopic rod 55 is fixedly connected to an inclined rod 57. The front end of the telescopic rod 55 is popped out by the telescopic spring 56, and the ring member 47 is pushed to slide inside the T-slot 41, and the sleeve rod 44 at the lower end moves at the same time. The sleeve rod 44 slides on the surface of the driving spline shaft 43 and drives the first clutch disc 45 to slide and separate from the second clutch disc 46. At this time, the screw rod 42 will lose its power source, and the entire device will stop testing, which is regarded as a qualified test, thereby increasing its service life.

[0034] The clamping mechanism 6 includes a T-shaped support 61, which is threaded on the surface of the screw rod 42 and slidably connected inside the T-slot 41. The upper end of the T-shaped support 61 is fixedly connected to a trapezoidal block 62, and the interior of the trapezoidal block 62 is fixedly connected to a CNC cylinder 63, one end of the CNC cylinder 63 is fixedly connected to a T-rod 65, the interior of the trapezoidal block 62 is rotatably connected to a fan gear 66, and a connecting rod 67 is rotatably connected between the fan gear 66 and the T-rod 65. The interior of the trapezoidal block 62 is slidably connected to a clamping plate 68, one end of the clamping plate 68 is fixedly connected to a teeth 69, the interior of the trapezoidal block 62 is fixedly connected to a limiting slide rail 64, the clamping plate 68 is slidably connected on the surface of the limiting slide rail 64, and the teeth 69 are engaged with the fan gear 66.

[0035] The pulling mechanism 7 includes a grooved roller 71, which is rotatably connected inside the clamping plate 68. A rotating rod 72 is fixedly connected to the side of the main rotating shaft of the grooved roller 71, and an L-shaped rod 73 is fixedly connected to one end of the rotating rod 72. A small gear 74 is fixedly connected to the surface of the rotating rod 72. A bevel groove 75 is provided on the surface of the support plate 3. The grooved roller 71 rotates counterclockwise, so that horizontal tension can be applied to the steel in the clamping plate 68 during inspection, thereby reducing the vertical pressure and preventing the clamping plate 68 from bringing excessive pressure, causing the surface of the steel plate to be depressed. The grooved roller 71 has a higher friction force and can relatively pull the steel again, which can increase the efficiency of toughness detection on the original basis.

[0036] The stabilizing mechanism 8 includes an arc-shaped rod 81, which is rotatably connected to the surface of the trapezoidal block 62. The trapezoidal block 62 is internally rotatably connected to a trigger plate 82. The side of the main rotating shaft of the arc-shaped rod 81 is fixedly connected to a special-shaped card rod 83. A spring 1 84 is connected between the special-shaped card rod 83 and the trapezoidal block 62. The side of the trapezoidal block 62 is fixedly connected to a slide 85. The inside of the slide 85 is slidably connected to a card block 86. The surface of the card block 86 is provided with an inclined groove 87. A spring 2 88 is provided inside the slide 85. The surface of the trapezoidal block 62 is fixedly connected to a limited slide 89. The inside of the limited slide 89 is slidably connected to an L-shaped rod 2 810. One end of the main rotating shaft of the trigger plate 82 is connected to the L-shaped The connecting rod 2 811 is rotatably connected between the rod 2 810. The plane of the special-shaped clamping rod 83 and the plane of the clamping block 86 are in contact with each other in the initial state, thereby blocking each other. When the L-shaped rod 2 810 slides, it will slide in the inclined groove 87 opened in the clamping block 86 and squeeze the inclined surface of the inclined groove 87, driving the clamping block 86 to slide. The clamping block 86 slides inside the slide groove 85 and separates from the special-shaped clamping rod 83. The special-shaped clamping rod 83 rotates through the spring 1 84, and at the same time drives the arc rod 81 to rotate clockwise. The arc rod 81 on the clamping plate 68 at the lower end rotates counterclockwise to further clamp the broken steel and prevent the broken steel from flying around, thereby causing a safety hazard.

[0037] The use method and advantages of the present invention: When the nondestructive testing device for tensile strength of steel is used, the working process is as follows:

[0038] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 As shown;

[0039] When in use, first place the annular steel material on the surface of the placing table 2, and then the CNC machine tool 1 drives the CNC cylinder 63 to pull the T-bar 65, and the T-bar 65 pulls the two connecting rods 67. When the two connecting rods 67 are pulled, the two sector gears 66 are driven to rotate. When the sector gear 66 rotates, the two clamping plates 68 are driven by the teeth 69 to slide relative to each other in the limiting slide rail 64 and the trapezoidal block 62, clamping and fixing the two ends of the steel material. At this time, the steel material will be stuck in the position between the groove rollers 71, and the small gears 74 on both sides of the two trapezoidal blocks 62 will mesh with each other. Then, manually push the annular member 47, The annular member 47 slides inside the T-slot 41 and drives the sleeve rod 44 at the lower end to move at the same time. The sleeve rod 44 slides on the surface of the driving spline shaft 43 and drives the first clutch disc 45 to slide until it engages with the second clutch disc 46 at one end of the screw rod 42. At the same time, when the annular member 47 moves, it drives the inclined block 54 at the upper end to move at the same time, and squeezes the telescopic rod 55 and the telescopic spring 56 on the surface of the telescopic rod 55. The inclined block 54 moves to the back of the triangular block 53. At this time, the plane of the inclined block 54 fits with the plane of the triangular block 53 and is stuck with each other. At this time, the telescopic rod 55 is squeezed to an inextensible state.

[0040] After preparation, the CNC machine tool 1 is used to drive the driving spline shaft 43 to rotate. When the driving spline shaft 43 rotates, the first clutch plate 45 and the second clutch plate 46 drive the screw rod 42 to rotate. When the screw rod 42 rotates, it drives the T-shaped support 61 with the surface threaded connection to move backward. When the T-shaped support 61 moves, it drives the trapezoidal block 62 at the upper end and the clamping plate 68 to move backward to pull the steel to test the toughness of the steel. When the clamping plate 68 moves, it drives the side L-shaped rod 73 to slide in the inclined groove 75 opened in the support plate 3. When the L-shaped rod 73 moves, it rotates clockwise along the inclined surface of the inclined groove 75. The L-shaped rod 73 passes The rotating rod 72 rotates, and the rotating rod 72 rotates through the groove roller 71, driving the groove roller 71 to rotate. At the same time, when the rotating rod 72 rotates, it drives the small gear 74 to rotate. When the small gear 74 rotates, it also drives the small gear 74 engaged at the upper end to rotate, and at the same time drives the groove roller 71 at the upper end to rotate counterclockwise. In this way, horizontal pulling force can be applied to the steel in the clamping plate 68 during detection, thereby reducing the vertical pressure and preventing the clamping plate 68 from bringing excessive pressure, causing the surface of the steel plate to be depressed. The groove roller 71 has a higher friction force and can relatively pull the steel again, which can increase the efficiency of toughness detection on the original basis.

[0041] After the clamping plate 68 moves a short distance, the inspection is considered completed to ensure that the non-destructive inspection of the steel is completed. When the T-shaped support 61 moves, it squeezes the telescopic rod 55. At this time, the telescopic rod 55 is in a non-retractable state. The T-shaped support 61 drives the telescopic rod 55 to move at the same time. When the telescopic rod 55 moves, it drives the inclined rod 57 to move. The height of the inclined rod 57 is higher than the inclined plane block 54. After moving, the inclined rod 57 squeezes one end of the inclined plane rod 52. When the inclined plane rod 52 is squeezed, it rotates with the support rod 51 as the center of the circle. At the same time, the triangle The block 53 and the inclined block 54 will separate. At this time, the telescopic rod 55 will not be subject to resistance, and the front end of the telescopic rod 55 will be ejected by the telescopic spring 56, while pushing the annular member 47 to slide inside the T-slot 41, and driving the lower end of the sleeve rod 44 to move at the same time. The sleeve rod 44 slides on the surface of the driving spline shaft 43, and drives the first clutch disc 45 to slide and separate from the second clutch disc 46. At this time, the screw rod 42 will lose its power source, and the entire device will stop testing, which is regarded as a qualified test, thereby increasing its service life.

[0042] When defective products appear during the inspection process, the steel breaks. When the steel breaks, a large reaction force is generated, which causes the steel to vibrate greatly. When the steel vibrates, it hits the trigger plate 82, driving the trigger plate 82 to rotate. When the trigger plate 82 rotates, it drives the connecting rod 2 811 to rotate. When the connecting rod 2 811 rotates, the other end pulls the L-shaped rod 2 810 to slide downward inside the limiting slide 89. At the same time, when the L-shaped rod 2 810 slides, it slides in the inclined groove 87 opened in the block 86 and squeezes the inclined surface of the inclined groove 87, driving the block 86 to slide. The block 86 slides inside the slide groove 85 and separates from the special-shaped card rod 83. The special-shaped card rod 83 rotates through the spring 1 84, and at the same time drives the arc rod 81 to rotate clockwise. The arc rod 81 on the clamping plate 68 at the lower end rotates counterclockwise, further clamping the broken steel to prevent the broken steel from flying around, thereby causing a safety hazard.

[0043] Finally, it is only necessary to manually rotate the arc rod 81, and the arc rod 81 drives the special-shaped clamping rod 83 to rotate, squeezing the clamping block 86 while being clamped with the clamping block 86.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A non-destructive testing device for tensile strength of steel, comprising a numerically controlled machine tool (1), characterized in that: The surface of the CNC machine tool (1) is fixedly connected to a placing table (2), the surface of the CNC machine tool (1) is fixedly connected to a supporting plate (3), a clutch mechanism (4) is provided inside the CNC machine tool (1), a disconnect mechanism (5) is installed on the surface of the CNC machine tool (1), a clamping mechanism (6) is slidably connected to the surface of the CNC machine tool (1), a tension mechanism (7) is provided inside the clamping mechanism (6), and a stabilizing mechanism (8) for further clamping the broken steel is rotatably connected to the surface of the clamping mechanism (6); The clutch mechanism (4) comprises a T-slot (41), the T-slot (41) being provided inside the CNC machine tool (1), a screw rod (42) being rotatably connected inside the T-slot (41), a driving spline shaft (43) being rotatably connected inside the CNC machine tool (1), a sleeve rod (44) being slidably connected on the surface of the driving spline shaft (43), one end of the sleeve rod (44) being fixedly connected to a first clutch disc (45), one end of the screw rod (42) being fixedly connected to a second clutch disc (46), and a ring member (47) being rotatably connected on the surface of the sleeve rod (44); The disconnect mechanism (5) comprises a support rod (51), the support rod (51) is fixedly connected to the surface of the CNC machine tool (1), the upper end of the support rod (51) is hinged with an inclined rod (52), the lower end of the inclined rod (52) is fixedly connected to a triangular block (53), the upper end of the annular member (47) is fixedly connected to an inclined block (54), the side of the annular member (47) is fixedly connected to a telescopic rod (55), a telescopic spring (56) is provided on the surface of the telescopic end of the telescopic rod (55), and the surface of the telescopic rod (55) is fixedly connected to an inclined rod (57); The tension mechanism (7) includes a grooved roller (71), which is rotatably connected inside the clamping plate (68) on the clamping mechanism (6), and a rotating rod (72) is fixedly connected to the side of the main rotating shaft of the grooved roller (71), and one end of the rotating rod (72) is fixedly connected to an L-shaped rod (73), and a small gear (74) is fixedly connected to the surface of the rotating rod (72), and a bevel groove (75) is provided on the surface of the support plate (3).

2. The nondestructive testing device for tensile strength of steel according to claim 1, characterized in that: The clamping mechanism (6) includes a T-shaped support member (61), the T-shaped support member (61) is threadedly connected to the surface of the screw rod (42) and is slidably connected inside the T-shaped groove (41), the upper end of the T-shaped support member (61) is fixedly connected to a trapezoidal block (62), the interior of the trapezoidal block (62) is fixedly connected to a numerical control cylinder (63), one end of the numerical control cylinder (63) is fixedly connected to a T-shaped rod (65), the interior of the trapezoidal block (62) is rotatably connected to a sector gear (66), a connecting rod (67) is rotatably connected between the sector gear (66) and the T-shaped rod (65), the interior of the trapezoidal block (62) is slidably connected to a clamping plate (68), one end of the clamping plate (68) is fixedly connected to teeth (69), and the interior of the trapezoidal block (62) is fixedly connected to a limited position slide rail (64).

3. The nondestructive testing device for tensile strength of steel according to claim 2, characterized in that: The stabilizing mechanism (8) includes an arc rod (81), the arc rod (81) is rotatably connected to the surface of the trapezoidal block (62), the trapezoidal block (62) is internally rotatably connected to a trigger plate (82), the side of the main rotating shaft of the arc rod (81) is fixedly connected to a special-shaped clamping rod (83), a spring (84) is connected between the special-shaped clamping rod (83) and the trapezoidal block (62), the side of the trapezoidal block (62) is fixedly connected to a slide groove (85), the interior of the slide groove (85) is slidably connected to a clamping block (86), the surface of the clamping block (86) is provided with an inclined groove (87), the interior of the slide groove (85) is provided with a spring (88), the surface of the trapezoidal block (62) is fixedly connected to a limited slide groove (89), the interior of the limited slide groove (89) is slidably connected to an L-shaped rod (810), and a connecting rod (811) is rotatably connected between one end of the main rotating shaft of the trigger plate (82) and the L-shaped rod (810).

4. The nondestructive testing device for tensile strength of steel according to claim 3, characterized in that: The clamping plate (68) is slidably connected to the surface of the limiting slide rail (64), and the teeth (69) are meshed with the sector gear (66).

5. The nondestructive testing device for tensile strength of steel according to claim 4, characterized in that: The plane of the special-shaped clamping rod (83) and the plane of the clamping block (86) are in contact with each other in the initial state, thereby blocking each other.

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