A high-toughness steel bar clamping tensile testing machine and testing method thereof

Abstract

The present invention discloses a high-toughness steel bar clamping tensile testing machine and a testing method thereof, comprising a machine base, a control computer is provided on one side of the machine base, an automatic feeding box is provided on one side of the top of the machine base, a U-shaped fixing frame is provided on the side of the top of the machine base away from the automatic feeding box, and a symmetrically arranged clamping cylinder is provided on the top of the machine base and between the automatic feeding box and the U-shaped fixing frame. Beneficial effects: By providing an automatic feeding box and a steel bar automatic feeding assembly, steel bars can be automatically fed without manual feeding by personnel, thus reducing the labor of personnel, improving the feeding efficiency and thus speeding up the detection speed; by providing a clamping assembly, two groups of arc-shaped clamping plates are driven to move synchronously through a rotating cylinder to clamp the steel bars, so that the steel bars are clamped firmly and not easy to loosen; by providing an image gradient recording assembly, the deformation process of the steel bar tensile section can be recorded at all times.

Description

Technical Field

[0001] The invention relates to the technical field of tensile machines, and in particular to a high-toughness steel bar clamping tensile testing machine and a testing method thereof. Background Art

[0002] Rebar refers to steel used for reinforced concrete and prestressed reinforced concrete. Its cross section is round, or sometimes square with rounded corners. It includes plain round steel bars, ribbed steel bars, and twisted steel bars.

[0003] After the production of steel bars, they need to be tested for tensile strength. Currently, tensile testing of steel bars is mainly carried out by tensile testing machines. Existing tensile testing machines mainly rely on manual loading. However, when testing the tensile strength of steel bars, it is necessary to repeatedly test multiple groups of steel bars, which will increase the workload of personnel. At the same time, manual loading will also reduce the detection efficiency. At the same time, the existing tensile testing machines cannot record the real-time images of the steel bars during the detection process, and cannot observe the deformation process of the tensile section of the steel bars, which affects the detection accuracy.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0005] In view of the problems in the related art, the present invention proposes a high-toughness steel bar clamping tensile testing machine and a testing method thereof to overcome the above-mentioned technical problems existing in the existing related art.

[0006] To this end, the specific technical solution adopted by the present invention is as follows: A high-toughness steel bar clamping tensile testing machine, comprising a machine base, a control computer is provided on one side of the machine base, an automatic feeding box is provided on one side of the top of the machine base, a U-shaped fixing frame is provided on the side of the top of the machine base away from the automatic feeding box, a symmetrically arranged clamping cylinder is provided on the top of the machine base and between the automatic feeding box and the U-shaped fixing frame, one group of the clamping cylinders is fixedly connected to the automatic feeding box, and another group of the clamping cylinders is connected to the U-shaped fixing frame through a tensile detection mechanism, an automatic steel bar feeding assembly is provided in the automatic feeding box, a clamping assembly is provided in the clamping cylinder, and the tensile detection mechanism includes a mounting seat provided in the U-shaped fixing frame, and guides are provided on both sides of the mounting seat A slider, a guide groove matching the guide slider is provided on the inner wall of the U-shaped fixing frame, one side of the mounting seat is connected to a group of the clamping cylinders through a connecting frame, a detection box is provided on the side of the mounting seat away from the connecting frame, a hydraulic cylinder is provided on one side of the U-shaped fixing frame, the movable end of the hydraulic cylinder extends into the detection box and is connected to the pressure plate, a guide rod symmetrically arranged and passing through the pressure plate is provided in the detection box, a spring is provided on one side of the pressure plate and on the outer wall of the guide rod, a symmetrically arranged pressure block is provided on one side of the pressure plate, a pressure sensor is provided on the inner wall of the detection box, an image gradient recording component is provided between the two groups of the clamping cylinders, and the image gradient recording component is connected to the connecting frame.

[0007] Preferably, a placement rack is provided on both sides of the machine base, a collection box is provided in the placement rack, and the collection box is slidably connected to the placement rack.

[0008] Preferably, the automatic steel bar feeding assembly includes a discharge box provided at the top of the automatic feeding box, a mounting groove connected to the discharge box is provided in the automatic feeding box, a discharge roller is provided in the mounting groove, a plurality of evenly distributed placement grooves are provided on the outer wall of the discharge roller, a conveying groove is provided in the automatic feeding box and at the bottom end of the mounting groove, and the conveying groove is respectively connected to the mounting groove and the clamping cylinder.

[0009] Preferably, the shaft end on one side of the unloading roller extends to the automatic feeding box and is connected to a driving end of a servo motor. An L-shaped connecting seat is provided on one side of the automatic feeding box. An electric push rod is provided on one side of the L-shaped connecting seat. The movable end of the electric push rod is provided with a pushing block matching the conveying trough.

[0010] Preferably, the clamping assembly includes an adjustment groove provided in the clamping cylinder, the adjustment groove is provided with symmetrically arranged arc-shaped clamping plates, two groups of adjustment grooves are provided with symmetrically arranged force-bearing guide rods that pass through the two groups of the arc-shaped clamping plates, the outer wall of the clamping cylinder is provided with a drive box, and the top ends of the two groups of the arc-shaped clamping plates extend into the drive box and are connected to the drive assembly.

[0011] Preferably, the driving assembly includes a rotating cylinder provided at the top of the driving box, the movable end of the rotating cylinder extends into the driving box and is connected to gear one, L-shaped slides are provided in the driving box and on both sides of the gear one, two groups of the L-shaped slides are provided with meshing teeth matching the gear one, and the tops of the two groups of arc-shaped clamping plates extend into the driving box and are respectively connected to the two groups of L-shaped slides.

[0012] Preferably, anti-slip grooves are provided on the concave surfaces of the two groups of arc-shaped clamping plates.

[0013] Preferably, the image gradient recording assembly includes an annular frame provided between two groups of the clamping cylinders, the annular frame is connected to the connecting frame via a connecting rod, the inner wall of the annular frame is provided with a mounting slider matching therewith, a camera is provided at the bottom end of the mounting slider, a servo motor 2 is provided on one side of the mounting slider, the servo motor 2 is connected to the mounting slider via a mounting plate, a driving end of the servo motor 2 passes through the mounting plate and is connected to gear 2, and a gear ring matching gear 2 is provided on one side of the annular frame.

[0014] Preferably, the annular frame is provided with an annular sliding groove matching the mounting slide block.

[0015] According to another aspect of the present invention, there is provided a test method of a high-toughness steel bar clamping tensile testing machine, comprising the following steps: Step 1: When loading, multiple groups of steel bars to be tested are placed horizontally into the discharge box. The steel bars in the discharge box can only slide one at a time into the placement slot of the unloading roller. When loading, start the servo motor 1 to drive the unloading roller to rotate. When the unloading roller turns the placement slot to the bottom, the steel bars originally in the placement slot fall into the conveying slot, and then start the electric push rod to drive the push block into the conveying slot to push the steel bars to move until both ends of the steel bars enter the two groups of clamping cylinders respectively. At this time, start the rotating cylinder to drive the gear 1 to rotate, and the gear 1 drives the two groups of L-shaped slides to move relatively. The two groups of L-shaped slides drive the two groups of arc clamps to move similarly to clamp the steel bars. By setting an automatic feeding box and a steel bar automatic feeding assembly, the steel bars can be automatically fed without manual feeding by personnel, reducing the labor of personnel, improving the feeding efficiency and thus speeding up the detection speed. By setting a clamping assembly, the two groups of arc clamps are driven to move synchronously by the rotating cylinder to clamp the steel bars, so that they are firmly clamped and not easy to loosen; Step 2: During the detection, start the hydraulic cylinder to drive the mounting seat to move to the side away from the automatic feeding box. The mounting seat drives a group of clamping cylinders to move through the connecting frame. The clamping cylinders start to pull the steel bars. At the same time, the hydraulic cylinder drives the pressure plate to slide on the guide rod, and the pressure plate drives the pressure block to squeeze the pressure sensor. At this time, the pressure sensor detects the real-time tension.

[0016] Step three: Image recording of the steel bar stretching section. During the process of pulling the steel bar, servo motor 2 is started to drive gear 2 to rotate. Gear 2 cooperates with the gear ring to drive the mounting slider to move in a circle on the inner wall of the ring frame. The mounting slider drives the camera to move in a circle to perform all-round image recording of the steel bar stretching section. By setting an image gradient recording component, the deformation process of the steel bar stretching section can be recorded at all times. At the same time, the image gradient recording component can drive the camera to revolve, making it more comprehensive in recording the steel bar stretching section, which is convenient for personnel to observe and improves its detection accuracy.

[0017] The beneficial effects of the present invention are as follows: by arranging an automatic feeding box and an automatic steel bar feeding component, steel bars can be automatically fed without manual feeding by personnel, thereby reducing the workload of personnel, improving the feeding efficiency and thus accelerating the detection speed; by arranging a clamping component, two sets of arc-shaped clamping plates are driven to move synchronously through a rotating cylinder to clamp the steel bars, so that they are firmly clamped and not easy to loosen; by arranging an image gradient recording component, the deformation process of the steel bar stretching section can be recorded at all times; at the same time, the image gradient recording component can drive the camera to rotate 360 ​​degrees to make its record of the steel bar stretching section more comprehensive, which is convenient for personnel to observe and improves its detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 2 is a schematic diagram of the overall structure of a high-toughness steel bar clamping tensile testing machine according to an embodiment of the present invention; Figure 2 This is a front view of a high-toughness steel bar clamping tensile testing machine according to an embodiment of the present invention; Figure 3 It is a structural schematic diagram of a U-shaped fixing frame in a high-toughness steel bar clamping tensile testing machine according to an embodiment of the present invention; Figure 4 is a cross-sectional view of a U-shaped fixing frame in a high-toughness steel bar clamping tensile testing machine according to an embodiment of the present invention; Figure 5 It is a structural schematic diagram of an automatic feeding box in a high-toughness steel bar clamping tensile testing machine according to an embodiment of the present invention; Figure 6 It is a main cross-sectional view of an automatic feeding box in a high-toughness steel bar clamping tensile testing machine according to an embodiment of the present invention; Figure 7is a side sectional view of an automatic feeding box in a high-toughness steel bar clamping tensile testing machine according to an embodiment of the present invention; Figure 8 It is a structural schematic diagram of a clamping cylinder in a high-toughness steel bar clamping tensile testing machine according to an embodiment of the present invention; Fig. 9 is a cross-sectional view of a clamping cylinder in a high-toughness steel bar clamping tensile testing machine according to an embodiment of the present invention; Fig.10 is a cross-sectional view of a drive box in a high-toughness steel bar clamping tensile testing machine according to an embodiment of the present invention; Fig.11 It is a structural schematic diagram of a ring frame in a high-toughness steel bar clamping tensile testing machine according to an embodiment of the present invention; Fig.12 yes Fig.11 A local enlarged schematic diagram of point A in the middle.

[0020] In the figure: 1. Machine base; 2. Control computer; 3. Automatic feeding box; 4. U-shaped fixing frame; 5. Clamping cylinder; 6. Mounting seat; 7. Guide slide block; 8. Guide slideway; 9. Connecting frame; 10. Detection box; 11. Hydraulic cylinder; 12. Pressing plate; 13. Guide rod; 14. Spring; 15. Pressing block; 16. Pressure sensor; 17. Placement frame; 18. Collection box; 19. Discharge box; 20. Installation slot; 21. Unloading roller; 22. Placement slot; 23. Conveyor slot; 24, servo motor one; 25, L-shaped connecting seat; 26, electric push rod; 27, pushing block; 28, adjusting slot; 29, arc clamp; 30, force guide rod; 31, drive box; 32, rotary cylinder; 33, gear one; 34, L-shaped slide plate; 35, ring frame; 36, connecting rod; 37, mounting slide; 38, camera; 39, servo motor two; 40, mounting plate; 41, gear two; 42, gear ring; 43, annular slide slot. DETAILED DESCRIPTION

[0021] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0022] According to an embodiment of the present invention, a high-toughness steel bar clamping tensile testing machine and a testing method thereof are provided.

[0023] Embodiment 1 like Figure 1-12As shown, the high-toughness steel bar clamping tensile testing machine according to an embodiment of the present invention includes a machine base 1, a control computer 2 is provided on one side of the machine base 1, an automatic feeding box 3 is provided on one side of the top of the machine base 1, a U-shaped fixing frame 4 is provided on the side of the top of the machine base 1 away from the automatic feeding box 3, a symmetrically arranged clamping cylinder 5 is provided on the top of the machine base 1 and between the automatic feeding box 3 and the U-shaped fixing frame 4, one group of the clamping cylinders 5 is fixedly connected to the automatic feeding box 3, and another group of the clamping cylinders 5 is connected to the U-shaped fixing frame 4 through a tensile detection mechanism, an automatic steel bar feeding assembly is provided in the automatic feeding box 3, a clamping assembly is provided in the clamping cylinder 5, and the tensile detection mechanism includes a mounting seat 6 provided in the U-shaped fixing frame 4, and guide sliders 7 are provided on both sides of the mounting seat 6. A guide groove 8 matching the guide slider 7 is provided on the inner wall of the U-shaped fixing frame 4, one side of the mounting seat 6 is connected to a group of the clamping tubes 5 through a connecting frame 9, a detection box 10 is provided on the side of the mounting seat 6 away from the connecting frame 9, a hydraulic cylinder 11 is provided on one side of the U-shaped fixing frame 4, the movable end of the hydraulic cylinder 11 extends into the detection box 10 and is connected to a pressure plate 12, a guide rod 13 symmetrically arranged and passing through the pressure plate 12 is provided in the detection box 10, a spring 14 is provided on one side of the pressure plate 12 and on the outer wall of the guide rod 13, a symmetrically arranged pressure block 15 is provided on one side of the pressure plate 12, a pressure sensor 16 is provided on the inner wall of the detection box 10, an image gradient recording component is provided between the two groups of the clamping tubes 5, and the image gradient recording component is connected to the connecting frame 9.

[0024] Embodiment 2 like Figure 1-12As shown, it includes a machine base 1, a control computer 2 is provided on one side of the machine base 1, an automatic feeding box 3 is provided on one side of the top of the machine base 1, a U-shaped fixing frame 4 is provided on the side of the top of the machine base 1 away from the automatic feeding box 3, a symmetrically arranged clamping cylinder 5 is provided on the top of the machine base 1 and between the automatic feeding box 3 and the U-shaped fixing frame 4, one group of the clamping cylinders 5 is fixedly connected to the automatic feeding box 3, and another group of the clamping cylinders 5 is connected to the U-shaped fixing frame 4 through a tensile testing mechanism, an automatic steel bar feeding assembly is provided in the automatic feeding box 3, a clamping assembly is provided in the clamping cylinder 5, and the tensile testing mechanism includes a mounting seat 6 provided in the U-shaped fixing frame 4, guide sliders 7 are provided on both sides of the mounting seat 6, and the inner wall of the U-shaped fixing frame 4 is provided with a A guide slot 8 is matched with the guide slider 7. One side of the mounting seat 6 is connected to a group of the clamping tubes 5 through a connecting frame 9. A detection box 10 is provided on the side of the mounting seat 6 away from the connecting frame 9. A hydraulic cylinder 11 is provided on one side of the U-shaped fixing frame 4. The movable end of the hydraulic cylinder 11 extends into the detection box 10 and is connected to the pressure plate 12. A guide rod 13 symmetrically arranged and passing through the pressure plate 12 is provided in the detection box 10. A spring 14 is sleeved on one side of the pressure plate 12 and located on the outer wall of the guide rod 13. A symmetrically arranged pressure block 15 is provided on one side of the pressure plate 12. A pressure sensor 16 is provided on the inner wall of the detection box 10. An image gradient recording component is provided between the two groups of the clamping tubes 5. The image gradient recording component is connected to the connecting frame 9. A placement frame 17 is provided on both sides of the base 1. A collection box 18 is provided in the placement frame 17. The collection box 18 is slidably connected to the placement frame 17. The steel bar automatic feeding assembly includes a discharge box 19 provided at the top of the automatic feeding box 3, a mounting groove 20 connected to the discharge box 19 is provided in the automatic feeding box 3, a feed roller 21 is provided in the mounting groove 20, and a plurality of evenly distributed placement grooves 22 are provided on the outer wall of the feed roller 21, a conveying groove 23 is provided in the automatic feeding box 3 and located at the bottom of the mounting groove 20, and the conveying groove 23 is respectively connected to the mounting groove 20 and the clamping cylinder 5. The shaft end of one side of the feed roller 21 extends to the automatic feeding box 3 and is connected to the driving end of the servo motor 24, an L-shaped connecting seat 25 is provided on one side of the automatic feeding box 3, an electric push rod 26 is provided on one side of the L-shaped connecting seat 25, and a push block 27 matching the conveying groove 23 is provided at the movable end of the electric push rod 26.

[0025] Embodiment 3 like Figure 1-12As shown, it includes a machine base 1, a control computer 2 is provided on one side of the machine base 1, an automatic feeding box 3 is provided on one side of the top of the machine base 1, a U-shaped fixing frame 4 is provided on the side of the top of the machine base 1 away from the automatic feeding box 3, a symmetrically arranged clamping cylinder 5 is provided on the top of the machine base 1 and between the automatic feeding box 3 and the U-shaped fixing frame 4, one group of the clamping cylinders 5 is fixedly connected to the automatic feeding box 3, and another group of the clamping cylinders 5 is connected to the U-shaped fixing frame 4 through a tensile testing mechanism, an automatic steel bar feeding assembly is provided in the automatic feeding box 3, a clamping assembly is provided in the clamping cylinder 5, and the tensile testing mechanism includes a mounting seat 6 provided in the U-shaped fixing frame 4, guide sliders 7 are provided on both sides of the mounting seat 6, and the inner wall of the U-shaped fixing frame 4 is provided with a A guide groove 8 matches the guide slider 7, one side of the mounting seat 6 is connected to a group of the clamping tubes 5 through a connecting frame 9, a detection box 10 is provided on the side of the mounting seat 6 away from the connecting frame 9, a hydraulic cylinder 11 is provided on one side of the U-shaped fixing frame 4, the movable end of the hydraulic cylinder 11 extends into the detection box 10 and is connected to a pressure plate 12, a guide rod 13 symmetrically arranged and passing through the pressure plate 12 is provided in the detection box 10, a spring 14 is sleeved on one side of the pressure plate 12 and located on the outer wall of the guide rod 13, a symmetrically arranged pressure block 15 is provided on one side of the pressure plate 12, a pressure sensor 16 is provided on the inner wall of the detection box 10, an image gradient recording component is provided between the two groups of the clamping tubes 5, and the image gradient recording component is connected to the connecting frame 9. The clamping assembly includes an adjustment groove 28 provided in the clamping tube 5, a symmetrically arranged arc-shaped clamping plate 29 is provided in the adjustment groove 28, two groups of adjustment grooves 28 are provided with a force guide rod 30 symmetrically arranged and passing through the two groups of the arc-shaped clamping plates 29, a driving box 31 is provided on the outer wall of the clamping tube 5, and the top ends of the two groups of the arc-shaped clamping plates 29 extend into the driving box 31 and are connected to the driving assembly. The driving assembly includes a rotating cylinder 32 provided at the top of the driving box 31, the movable end of the rotating cylinder 32 extends into the driving box 31 and is connected to the gear 1 33, an L-shaped slide plate 34 is provided in the driving box 31 and on both sides of the gear 1 33, and the two groups of the L-shaped slide plates 34 are provided with meshing teeth matching the gear 1 33, and the top ends of the two groups of the arc-shaped clamping plates 29 extend into the driving box 31 and are respectively connected to the two groups of the L-shaped slide plates 34. Anti-slip patterns are provided on the concave surfaces of the two groups of the arc-shaped clamping plates 29.

[0026] Embodiment 4 like Figure 1-12As shown, it includes a machine base 1, a control computer 2 is provided on one side of the machine base 1, an automatic feeding box 3 is provided on one side of the top of the machine base 1, a U-shaped fixing frame 4 is provided on the side of the top of the machine base 1 away from the automatic feeding box 3, a symmetrically arranged clamping cylinder 5 is provided on the top of the machine base 1 and between the automatic feeding box 3 and the U-shaped fixing frame 4, one group of the clamping cylinders 5 is fixedly connected to the automatic feeding box 3, and another group of the clamping cylinders 5 is connected to the U-shaped fixing frame 4 through a tensile testing mechanism, an automatic steel bar feeding assembly is provided in the automatic feeding box 3, a clamping assembly is provided in the clamping cylinder 5, and the tensile testing mechanism includes a mounting seat 6 provided in the U-shaped fixing frame 4, guide sliders 7 are provided on both sides of the mounting seat 6, and the inner wall of the U-shaped fixing frame 4 is provided with a A guide groove 8 matches the guide slider 7, one side of the mounting seat 6 is connected to a group of the clamping tubes 5 through a connecting frame 9, a detection box 10 is provided on the side of the mounting seat 6 away from the connecting frame 9, a hydraulic cylinder 11 is provided on one side of the U-shaped fixing frame 4, the movable end of the hydraulic cylinder 11 extends into the detection box 10 and is connected to a pressure plate 12, a guide rod 13 symmetrically arranged and passing through the pressure plate 12 is provided in the detection box 10, a spring 14 is sleeved on one side of the pressure plate 12 and located on the outer wall of the guide rod 13, a symmetrically arranged pressure block 15 is provided on one side of the pressure plate 12, a pressure sensor 16 is provided on the inner wall of the detection box 10, an image gradient recording component is provided between the two groups of the clamping tubes 5, and the image gradient recording component is connected to the connecting frame 9. The image gradient recording assembly includes an annular frame 35 provided between two groups of the clamping tubes 5, the annular frame 35 is connected to the connecting frame 9 through a connecting rod 36, a mounting slide 37 matching therewith is provided on the inner wall of the annular frame 35, a camera 38 is provided at the bottom end of the mounting slide 37, a servo motor 2 39 is provided on one side of the mounting slide 37, the servo motor 2 39 is connected to the mounting slide 37 through a mounting plate 40, the driving end of the servo motor 2 39 passes through the mounting plate 40 and is connected to a gear 2 41, and a gear ring 42 matching the gear 2 41 is provided on one side of the annular frame 35. An annular slide groove 43 matching the mounting slide 37 is provided on the annular frame 35.

[0027] Embodiment 5 like Figure 1-12 As shown, a test method of a high-toughness steel bar clamping tensile testing machine is provided, comprising the following steps; Step 1: When loading, multiple groups of steel bars to be tested are placed horizontally into the discharge box 19. The steel bars in the discharge box 19 can only slide one at a time into the placement slot 22 of the unloading roller 21. When loading, start the servo motor 24 to drive the unloading roller 21 to rotate. When the unloading roller 21 turns the placement slot 22 to the bottom, the steel bars originally in the placement slot 22 fall into the conveying slot 23. Then start the electric push rod 26 to drive the push block 27 to enter the conveying slot 23 to push the steel bars to move until both ends of the steel bars enter the two groups of clamping cylinders 5 respectively. At this time, start the rotary The rotating cylinder 32 drives the gear 1 33 to rotate, and the gear 1 33 drives the two groups of L-shaped slide plates 34 to move relatively, and the two groups of L-shaped slide plates 34 drive the two groups of arc-shaped clamping plates 29 to move close to clamp the steel bars. By setting an automatic feeding box and an automatic steel bar feeding component, the steel bars can be automatically fed without manual feeding by personnel, which reduces the labor of personnel, improves the feeding efficiency and speeds up the detection speed. By setting a clamping component, the rotating cylinder 32 drives the two groups of arc-shaped clamping plates 29 to move synchronously to clamp the steel bars, so that the steel bars are firmly clamped and not easy to loosen. Step 2: During detection, start the hydraulic cylinder 11 to drive the mounting seat 6 to move to the side away from the automatic feeding box 3. The mounting seat 6 drives a group of clamping cylinders 5 to move through the connecting frame 9. The clamping cylinders 5 start to pull the steel bars. At the same time, the hydraulic cylinder 11 drives the pressure plate 12 to slide on the guide rod 13. The pressure plate 12 drives the pressure block 15 to squeeze the pressure sensor 16. At this time, the pressure sensor 16 detects the real-time tension.

[0028] Step three: Image recording of the steel bar stretching section. During the process of pulling the steel bar, servo motor 2 39 is started to drive gear 2 41 to rotate. Gear 2 41 cooperates with gear ring 42 to drive the mounting slider 37 to move in a circle on the inner wall of the annular frame 35. The mounting slider 37 drives the camera 38 to move in a circle to perform all-round image recording of the steel bar stretching section. By setting an image gradient recording component, the deformation process of the steel bar stretching section can be recorded at all times. At the same time, the image gradient recording component can drive the camera to revolve, making it more comprehensive in recording the steel bar stretching section, which is convenient for personnel to observe and improves its detection accuracy.

[0029] To sum up, with the help of the above-mentioned technical scheme of the present invention, by setting up an automatic feeding box and an automatic steel bar feeding component, the steel bars can be automatically fed without manual feeding by personnel, thereby reducing the labor workload of personnel, improving their feeding efficiency and thus accelerating their detection speed. By setting up a clamping component, the two groups of arc-shaped clamps can be driven by a rotating cylinder to move synchronously to clamp the steel bars, so that they are firmly clamped and not easy to loosen. By setting up an image gradient recording component, the deformation process of the steel bar stretching section can be recorded at all times. At the same time, the image gradient recording component can drive the camera to rotate 360 ​​degrees to make its record of the steel bar stretching section more comprehensive, which is convenient for personnel to observe and improves its detection accuracy.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-toughness steel bar clamping tensile testing machine, characterized in that: The invention comprises a machine base (1), wherein a control computer (2) is provided on one side of the machine base (1), an automatic feeding box (3) is provided on one side of the top of the machine base (1), a U-shaped fixing frame (4) is provided on the side of the top of the machine base (1) away from the automatic feeding box (3), a symmetrically arranged clamping cylinder (5) is provided on the top of the machine base (1) and located between the automatic feeding box (3) and the U-shaped fixing frame (4), a group of the clamping cylinders (5) is fixedly connected to the automatic feeding box (3), and another group of the clamping cylinders (5) is connected to the U-shaped fixing frame (4) through a tensile testing mechanism, an automatic steel bar feeding assembly is provided in the automatic feeding box (3), a clamping assembly is provided in the clamping cylinder (5), and the tensile testing mechanism comprises a mounting seat (6) provided in the U-shaped fixing frame (4), guide slide blocks (7) are provided on both sides of the mounting seat (6), and the inner wall of the U-shaped fixing frame (4) is provided with a guide slide block connected to the guide slide block (7). A guide slide groove (8) matching the slider (7) is provided. One side of the mounting seat (6) is connected to a group of the clamping tubes (5) through a connecting frame (9). A detection box (10) is provided on the side of the mounting seat (6) away from the connecting frame (9). A hydraulic cylinder (11) is provided on one side of the U-shaped fixing frame (4). The movable end of the hydraulic cylinder (11) extends into the detection box (10) and is connected to the pressure plate (12). The detection box (10) is provided with a symmetrically arranged guide rod (13) that passes through the pressure plate (12). A spring (14) is provided on one side of the pressure plate (12) and is sleeved on the outer wall of the guide rod (13). A symmetrically arranged pressure block (15) is provided on one side of the pressure plate (12). A pressure sensor (16) is provided on the inner wall of the detection box (10). An image gradient recording component is provided between the two groups of the clamping tubes (5). The image gradient recording component is connected to the connecting frame (9).

2. A high toughness steel bar clamping tensile testing machine according to claim 1, characterized in that: A placement rack (17) is provided on both sides of the machine base (1), a collection box (18) is provided in the placement rack (17), and the collection box (18) is slidably connected to the placement rack (17).

3. A high toughness steel bar clamping tensile testing machine according to claim 2, characterized in that: The steel bar automatic feeding assembly comprises a discharge box (19) provided at the top of the automatic feeding box (3); a mounting groove (20) connected to the discharge box (19) is provided in the automatic feeding box (3); a discharge roller (21) is provided in the mounting groove (20); a plurality of evenly distributed placement grooves (22) are provided on the outer wall of the discharge roller (21); a conveying groove (23) is provided in the automatic feeding box (3) and located at the bottom of the mounting groove (20); the conveying groove (23) is respectively connected to the mounting groove (20) and the clamping cylinder (5).

4. A high toughness steel bar clamping tensile testing machine according to claim 3, characterized in that: The shaft end of one side of the unloading roller (21) extends to the automatic feeding box (3) and is connected to the driving end of a servo motor (24); an L-shaped connecting seat (25) is provided on one side of the automatic feeding box (3); an electric push rod (26) is provided on one side of the L-shaped connecting seat (25); and a push block (27) matching the conveying trough (23) is provided at the movable end of the electric push rod (26).

5. A high toughness steel bar clamping tensile testing machine according to claim 4, characterized in that: The clamping assembly comprises an adjustment groove (28) provided in the clamping cylinder (5), the adjustment groove (28) is provided with symmetrically arranged arc-shaped clamping plates (29), two groups of adjustment grooves (28) are provided with symmetrically arranged force guide rods (30) passing through the two groups of the arc-shaped clamping plates (29), the outer wall of the clamping cylinder (5) is provided with a drive box (31), and the top ends of the two groups of the arc-shaped clamping plates (29) extend into the drive box (31) and are connected to the drive assembly.

6. A high toughness steel bar clamping tensile testing machine according to claim 5, characterized in that: The driving assembly comprises a rotating cylinder (32) provided at the top of the driving box (31), the movable end of the rotating cylinder (32) extending into the driving box (31) and connected to a gear one (33), L-shaped slide plates (34) provided in the driving box (31) and on both sides of the gear one (33), two groups of the L-shaped slide plates (34) provided with meshing teeth matching the gear one (33), and the top ends of the two groups of arc-shaped clamping plates (29) extending into the driving box (31) and connected to the two groups of the L-shaped slide plates (34) respectively.

7. A high toughness steel bar clamping tensile testing machine according to claim 6, characterized in that: The concave surfaces of the two groups of arc-shaped clamping plates (29) are both provided with anti-slip grooves.

8. A high toughness steel bar clamping tensile testing machine according to claim 7, characterized in that: The image gradient recording assembly comprises an annular frame (35) provided between two groups of the clamping cylinders (5), the annular frame (35) being connected to the connecting frame (9) via a connecting rod (36), a mounting slide (37) matching therewith being provided on the inner wall of the annular frame (35), a camera (38) being provided at the bottom end of the mounting slide (37), a servo motor 2 (39) being provided on one side of the mounting slide (37), the servo motor 2 (39) being connected to the mounting slide (37) via a mounting plate (40), a driving end of the servo motor 2 (39) penetrating the mounting plate (40) and being connected to a gear 2 (41), and a gear ring (42) matching the gear 2 (41) being provided on one side of the annular frame (35).

9. A high toughness steel bar clamping tensile testing machine according to claim 8, characterized in that: The annular frame (35) is provided with an annular sliding groove (43) matching the mounting slide block (37).

10. A test method for a high-toughness steel bar clamping tensile testing machine, characterized in that: The high toughness steel bar clamping tensile testing machine for use in claim 9 comprises the following steps: Step 1: When loading, multiple groups of steel bars to be tested are placed horizontally into the discharge box (19). The steel bars in the discharge box (19) can only slide one at a time into the placement groove (22) of the discharge roller (21). When loading, the servo motor 1 (24) is started to drive the discharge roller (21) to rotate. When the discharge roller (21) rotates the placement groove (22) to the bottom, the steel bars originally in the placement groove (22) fall into the conveying groove (23). Then, the electric push rod (26) is started to drive the push block (27) to enter the conveying groove (23) to push the steel bars to move until both ends of the steel bars enter the two groups of clamping cylinders (5) respectively. At this time, the rotating cylinder (32) is started to drive the gear one (33) to rotate, and the gear one (33) drives the two groups of L-shaped slide plates (34) to move relative to each other. The two groups of L-shaped slide plates (34) drive the two groups of arc-shaped clamping plates (29) to move close to each other to clamp and fix the steel bars. By setting an automatic feeding box and a steel bar automatic feeding component, the steel bars can be automatically fed without manual feeding by personnel, thereby reducing the labor of personnel, improving the feeding efficiency and thus speeding up the detection speed. By setting a clamping component, the rotating cylinder (32) drives the two groups of arc-shaped clamping plates (29) to move synchronously to clamp the steel bars, so that the steel bars are firmly clamped and not easy to loosen; Step 2: During the detection, the hydraulic cylinder (11) is started to drive the mounting seat (6) to move to the side away from the automatic feeding box (3), and the mounting seat (6) drives a group of clamping cylinders (5) to move through the connecting frame (9), and the clamping cylinders (5) begin to pull the steel bars. At the same time, the hydraulic cylinder (11) drives the pressure plate (12) to slide on the guide rod (13), and the pressure plate (12) drives the pressure block (15) to squeeze the pressure sensor (16). At this time, the pressure sensor (16) detects the real-time tension. Step 3: Image recording of the steel bar stretching section. During the steel bar pulling process, the servo motor 2 (39) is started to drive the gear 2 (41) to rotate. The gear 2 (41) cooperates with the gear ring (42) to drive the mounting slide block (37) to move in a circular manner on the inner wall of the annular frame (35). The mounting slide block (37) drives the camera (38) to move in a circular manner to perform all-round image recording of the steel bar stretching section. By setting an image gradient recording component, the deformation process of the steel bar stretching section can be recorded at all times. At the same time, the image gradient recording component can drive the camera to revolve so that the recording of the steel bar stretching section is more comprehensive, which is convenient for personnel to observe and improves its detection accuracy.

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