A testing device for the bending strength of copper metal alloy materials

Abstract

The invention relates to the technical field of bending resistance of metal materials, and discloses a testing device for the bending resistance of copper metal alloy materials, comprising a detection mechanism. The detection mechanism is set to improve the accuracy of the maximum bending detection value of the copper metal alloy material. Under the same pressure, the pressure distribution of two first sliding frames is changed according to the different stress distribution of the copper metal alloy material, so as to improve the detection accuracy. The shape change of the high-copper metal alloy material during bending can be monitored in real time through two infrared distance sensors. The two first sliding frames and two special-shaped blocks are set to adjust the area and curvature of the pressure point according to the hardness of the copper metal alloy material, so that the copper metal alloy material can withstand a larger bending force, and the copper metal alloy material can be prevented from being damaged during the detection process, resulting in a decrease in the detection accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of bending resistance of metal materials, in particular to a testing device for the bending strength of copper metal alloy materials. Background Art

[0002] Metal bending test is an important material performance test method. It provides a scientific basis for engineering design and material selection by evaluating the deformation and damage of metal materials under bending force. In terms of evaluating the bending performance of materials, the four-point bending test machine is very popular. The four-point bending test applies force at two symmetrical loading points of the specimen, so that the material produces uniform bending stress between the two points. Compared with the three-point bending test, this method can more accurately measure the bending strength and modulus of the material because it reduces the local stress concentration caused by concentrated loading.

[0003] Therefore, based on the existing bending strength test device, in actual application, since the material is an alloy, the stress of the material may be inconsistent. When the four-point bending test is performed by applying equal forces at two symmetrical loading points of the specimen, the stress value at one point will reach the maximum value, but the stress value at another point has not yet extended to the maximum value, resulting in the material breaking when the maximum bending value of the material is not detected, thereby causing errors;

[0004] At the same time, due to the different alloy ratios of alloy metal materials, the hardness of the alloy will be different. When the alloy hardness is low, the smaller contact area and larger bending force will cause scratches and deep pits in the alloy, resulting in detection deviations. For this reason, we propose a test device for the bending strength of copper metal alloy materials. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a testing device for the bending strength of copper metal alloy materials, which has the advantages of high detection accuracy and solves a series of problems such as low detection accuracy.

[0006] To achieve the above object, the present invention provides the following technical solution: a test device for the bending strength of copper metal alloy materials, comprising:

[0007] A workbench, the workbench comprising a work table placed on the ground;

[0008] A detection mechanism, the detection mechanism is used to detect the bending strength of the copper metal alloy material, the detection mechanism comprises a detection table placed on the top of the work table, the top of the detection table is fixedly connected to a limit shell, and the interior of the limit shell is slidably connected to a sliding plate;

[0009] The bottom of the sliding plate is movably plugged with a mounting frame, two infrared distance sensors are fixedly installed inside the mounting frame, the bottom of the mounting frame is rotatably connected to a second detection shell, the output ends of the two infrared distance sensors are adapted to the top of the second detection shell, the bottom of the second detection shell is slidably connected to two first sliding frames, the insides of the two first sliding frames are both connected to a first screw rod and a second screw rod in a damped rotation manner, and the outsides of the first screw rod and the second screw rod are wrapped with the same driving sheet;

[0010] A first detection shell is movably inserted on the top of the detection platform, and two second sliding frames are slidably connected to the top of the first detection shell. The tops of the two second sliding frames are rotatably connected to a special-shaped block, and the outer contour of the special-shaped block is a spiral arrangement.

[0011] Preferably, a hydraulic cylinder is fixedly installed on the top of the inner wall of the limit shell, the top of the sliding plate is fixedly connected to the output end of the hydraulic cylinder, the bottom of the sliding plate is fixedly connected to a mounting sleeve, the external thread of the mounting sleeve is screwed with a first fastening nut, one end of the first fastening nut abuts against the outside of the mounting frame, the bottom of the mounting frame is rotatably connected to a second fastening nut, and the second detection shell is rotatably connected to the outside of the second fastening nut.

[0012] Preferably, the interior of the second detection shell is rotatably connected to a first double-headed threaded rod, the external threads of the first double-headed threaded rod are screwed with two first nut sliders, the two first nut sliders are both slidably connected to the interior of the second detection shell, the two first sliding frames are both slidably connected to the bottom of adjacent first nut sliders, both sides of the second detection shell are fixedly connected to limit blocks, and the two first sliding frames are both slidably connected to the outside of the two limit blocks.

[0013] Preferably, a first distance ruler is fixedly connected to one side of the second detection shell, the first distance ruler is adapted to a first sliding frame adjacent thereto, both ends of the first double-headed threaded rod extend to the outside of the second detection shell, and both ends of the first double-headed threaded rod are fixedly connected to a second screw cap.

[0014] Preferably, the first detection shell is rotatably connected to a second double-headed threaded rod inside, the second double-headed threaded rod is screwed to two second nut sliders on its external threads, the two second nut sliders are both slidably connected to the top of the first detection shell, the top of the second nut slider is fixedly connected to a tension spring, the top of the tension spring is fixedly connected to the bottom of an adjacent second sliding frame, the inner wall of the second nut slider is fixedly connected to a protrusion, the outside of the second sliding frame is provided with a groove, the protrusion is adapted to the groove, and the two second sliding frames are both slidably connected to the inside of adjacent second nut sliders.

[0015] Preferably, the top of the second sliding frame is rotatably connected to a rotating rod, the special-shaped block is fixedly sleeved on the outside of the rotating rod, a third fastening nut is threadedly screwed on one side of the second sliding frame, one end of the third fastening nut abuts against the outside of the rotating rod, and the top of the second sliding frame is fixedly connected to a limited stop block.

[0016] Preferably, a protective shell is fixedly connected to one side of the second sliding frame, a ring is provided inside the protective shell, the ring is fixedly sleeved on the outside of the rotating rod, a sleeve is wrapped around the outside of the ring, a gravity block is fixedly connected to the bottom of the sleeve, the gravity block is slidably connected to the inside of the protective shell, and a second distance scale is fixedly connected to the outside of the protective shell, and the second distance scale is adapted to the gravity block.

[0017] Preferably, both ends of the second double-start threaded rod extend to the outside of the first detection shell, and both ends of the second double-start threaded rod are fixedly connected with a first screw cap, and the outside of the first detection shell is fixedly connected with a third distance ruler, and the third distance ruler is adapted to a second sliding frame adjacent to it.

[0018] Compared with the prior art, the present invention provides a test device for the bending strength of copper metal alloy materials, which has the following beneficial effects:

[0019] 1. The invention can improve the accuracy of the maximum bending detection value of the copper metal alloy material by setting up a detection mechanism. Under the same pressure, the pressure distribution of the two first sliding frames is changed according to the different stress distribution of the copper metal alloy material, so that the side with a smaller stress value continues to move downward due to the pressure to reduce the pressure on the side with a larger stress value. At the same time, the side with a smaller stress value will cause the side with a larger stress value to change due to pressure deformation to relieve the stress, thereby improving the detection accuracy. The shape change of the high-copper metal alloy material during bending can be monitored in real time through two infrared distance sensors.

[0020] 2. The invention sets two first sliding frames and two special-shaped blocks, so that the area and curvature of the pressure point can be adjusted according to the hardness of the copper metal alloy material, so that the copper metal alloy material can withstand greater bending force, avoiding damage to the copper metal alloy material during the detection process, resulting in reduced detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the detection mechanism of the present invention;

[0023] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part C;

[0024] Figure 4 An exploded view of the second sliding frame portion of the present invention;

[0025] Figure 5 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0026] Figure 6 is a schematic diagram of the internal structure of the second detection shell of the present invention;

[0027] Figure 7 for Figure 2 Schematic diagram of the enlarged structure of part B.

[0028] In the figure: 1, workbench; 2, detection mechanism; 3, work table; 4, detection table; 5, first detection shell; 6, limit shell; 7, sliding plate; 8, first screw cap; 9, hydraulic cylinder; 10, mounting sleeve; 11, mounting frame; 12, first fastening nut; 13, second fastening nut; 14, second detection shell; 15, infrared distance sensor; 16, first double-headed threaded rod; 17, first nut slider; 18, limit block; 19, first sliding frame; 20, first screw Rod; 21, second screw rod; 22, drive plate; 23, second double-headed threaded rod; 24, second nut slider; 25, tension spring; 26, second sliding frame; 27, protrusion; 28, groove; 29, rotating rod; 30, special-shaped block; 31, collar; 32, sleeve; 33, gravity block; 34, protective shell; 35, second distance scale; 36, third distance scale; 37, third fastening nut; 38, limit stop; 39, second screw cap; 40, first distance scale. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a testing device for the bending strength of copper metal alloy materials.

[0031] In a typical implementation of the present application, Figure 1-7 As shown, a testing device for the bending strength of copper metal alloy materials comprises:

[0032] A workbench 1, the workbench 1 comprises a work table 3 placed on the ground;

[0033] The detection mechanism 2 is used to detect the bending strength of the copper metal alloy material. The detection mechanism 2 includes a detection table 4 placed on the top of the work table 3. The top of the detection table 4 is fixedly connected to a limit shell 6. The interior of the limit shell 6 is slidably connected to a sliding plate 7. A hydraulic cylinder 9 is fixedly installed on the top of the inner wall of the limit shell 6. The top of the sliding plate 7 is fixedly connected to the output end of the hydraulic cylinder 9.

[0034] By setting up the above-mentioned structure, the sliding plate 7 can be driven to slide up and down on the top of the detection platform 4. Specifically, the hydraulic cylinder 9 is started, and the output end of the hydraulic cylinder 9 moves and drives the sliding plate 7 to move up and down inside the limiting shell 6. More specifically, the sliding plate 7 will not be offset during the sliding process inside the limiting shell 6, thereby improving the movement stability of the sliding plate 7.

[0035] The bottom of the sliding plate 7 is fixedly connected with a mounting sleeve 10, and the external thread of the mounting sleeve 10 is screwed with a first fastening nut 12. The bottom of the sliding plate 7 is movably plugged with a mounting frame 11, and one end of the first fastening nut 12 abuts against the outside of the mounting frame 11. The bottom of the mounting frame 11 is rotatably connected with a second detection shell 14, and the bottom of the mounting frame 11 is rotatably connected with a second fastening nut 13, and the second detection shell 14 is rotatably connected to the outside of the second fastening nut 13. Two infrared distance sensors 15 are fixedly installed inside the mounting frame 11, and the output ends of the two infrared distance sensors 15 are both adapted to the top of the second detection shell 14;

[0036] The interior of the second detection shell 14 is rotatably connected with a first double-headed threaded rod 16, and the external threads of the first double-headed threaded rod 16 are screwed with two first nut sliders 17, and the two first nut sliders 17 are slidably connected to the interior of the second detection shell 14, and the bottom of the second detection shell 14 is slidably connected with two first sliding frames 19, and the two first sliding frames 19 are slidably connected to the bottoms of the adjacent first nut sliders 17, and both sides of the second detection shell 14 are fixedly connected with limit blocks 18, and the two first sliding frames 19 are slidably connected to the outsides of the two limit blocks 18;

[0037] A first distance ruler 40 is fixedly connected to one side of the second detection shell 14, and the first distance ruler 40 is adapted to the adjacent first sliding frame 19. Both ends of the first double-headed threaded rod 16 extend to the outside of the second detection shell 14, and both ends of the first double-headed threaded rod 16 are fixedly connected to the second screw cap 39. The interiors of the two first sliding frames 19 are both connected to the first screw rod 20 and the second screw rod 21 in a damped rotation manner, and the outside of the first screw rod 20 and the second screw rod 21 is wrapped with the same driving sheet 22.

[0038] By setting the above structure, the accuracy of the bending strength test of the copper metal alloy material can be improved. Specifically, before testing the copper metal alloy material, it is necessary to adjust the distance of the pressure point according to the copper metal alloy material of different sizes and types. At this time, the second screw cap 39 is manually turned, and the second screw cap 39 rotates to drive the first double-headed threaded rod 16 to rotate. The first double-headed threaded rod 16 rotates to drive the two first nut sliders 17 to move relative to each other. The movement of the two first nut sliders 17 drives the two first sliding frames 19 to move, and the distance between the two first sliding frames 19 is accurately adjusted by the first distance ruler 40 outside the second detection shell 14;

[0039] When the distance adjustment is completed, the second screw rods 21 or the first screw rods 20 on the two first sliding frames 19 are adjusted and rotated at the same time according to the hardness of the copper metal alloy material:

[0040] The first case: when the hardness of the copper metal alloy material is poor, it means that the ductility is good. At this time, the second screw rod 21 on the left first sliding frame 19 is rotated clockwise, and the second screw rod 21 on the right first sliding frame 19 is rotated counterclockwise, and part of the driving plate 22 on the outside of the first screw rod 20 that is close to each other is wrapped around the outside of the second screw rod 21, so that the radius of the second screw rod 21 is increased, the inclination of the arc surface on the outside of the second screw rod 21 is reduced, and the contact surface with the copper metal alloy material is increased, so that the copper metal alloy material can withstand a larger bending force, thereby avoiding damage to the copper metal alloy material during the detection process, resulting in a decrease in detection accuracy.

[0041] The first case: when the hardness of the copper metal alloy material is high, it means that the ductility is poor. At this time, the first screw rod 20 on the left first sliding frame 19 is rotated counterclockwise, and the first screw rod 20 on the right first sliding frame 19 is rotated clockwise, and part of the driving plate 22 on the outside of the second screw rod 21 that is close to each other is wrapped around the outside of the first screw rod 20, so that the radius of the second screw rod 21 is reduced, the inclination of the arc surface on the outside of the second screw rod 21 is increased, and the contact area with the copper metal alloy material is reduced, so that the copper metal alloy material can be bent better, and the copper metal alloy material is prevented from being unable to bend well at the contact point due to the large contact point during the detection process, which affects the detection value.

[0042] It is worth mentioning that the drive sheet 22 is made of existing materials, such as stainless steel sheet, spring steel and alloy steel sheet, which have higher hardness than copper metal alloy materials and can be bent to meet the use requirements of the equipment;

[0043] Furthermore, in the above scheme, by setting the above structure, the accuracy of the bending detection value of the copper metal alloy material can be improved. Specifically, when it is necessary to use the fixed two upper contacts for detection, the second detection shell 14 is fixed to the inside of the mounting frame 11 by the knob second fastening nut 13 for normal detection. When the movable two upper contacts are used for detection, the second fastening nut 13 is loosened at this time, so that the second detection shell 14 can rotate at the bottom of the mounting frame 11. During the detection process, the two first sliding frames 19 continue to move downward. Since the stress value of the copper metal alloy material may be inconsistent, the side with a large stress value remains stationary, while the side with a small stress value continues to move downward due to pressure to reduce the pressure on the side with a large stress value. At the same time, the side with a small stress value will cause the side with a large stress value to change due to pressure deformation to relieve stress, thereby improving the detection accuracy. The shape change of the high-copper metal alloy material during bending can be monitored in real time through two infrared distance sensors 15.

[0044] It is worth mentioning that since the first sliding frame 19 slides at the bottom of the first nut slider 17, when the first sliding frame 19 is subjected to force, the force will be directly transmitted to the second detection shell 14 and the limit block 18, avoiding interference of the first double-headed threaded rod 16 by the force.

[0045] A first detection shell 5 is movably inserted on the top of the detection table 4, and a second double-headed threaded rod 23 is rotatably connected inside the first detection shell 5. Two second nut sliders 24 are screwed on the external threads of the second double-headed threaded rod 23, and the two second nut sliders 24 are both slidably connected to the top of the first detection shell 5. A tension spring 25 is fixedly connected to the top of the second nut slider 24. Two second sliding frames 26 are slidably connected to the top of the first detection shell 5, and the top of the tension spring 25 is fixedly connected to the bottom of the adjacent second sliding frame 26. The two second sliding frames 26 are both slidably connected to the inside of the adjacent second nut sliders 24. Both ends of the second double-headed threaded rod 23 extend to the outside of the first detection shell 5, and both ends of the second double-headed threaded rod 23 are fixedly connected to the first screwing cap 8. A third distance ruler 36 is fixedly connected to the outside of the first detection shell 5, and the third distance ruler 36 is adapted to the adjacent second sliding frame 26.

[0046] By setting the above-mentioned structure, the accuracy of the bending strength test of the copper metal alloy material can be improved. Specifically, before testing the copper metal alloy material, it is necessary to adjust the placement point distance according to the copper metal alloy material of different sizes and types. At this time, the manual knob first screws the cap 8, and the first screws the cap 8 rotates to drive the second double-headed threaded rod 23 to rotate. The second double-headed threaded rod 23 rotates to drive the two second nut sliders 24 to move relative to each other. The two second nut sliders 24 move relative to each other to drive the second sliding frame 26 thereon to move, and the distance between the two second sliding frames 26 is accurately adjusted by cooperating with the third distance ruler 36 and the adjacent second sliding frame 26.

[0047] The tops of the two second sliding frames 26 are rotatably connected to a special-shaped block 30 , and the outer contour of the special-shaped block 30 is a spiral arrangement.

[0048] Furthermore, in the above scheme, the outer contour of the special-shaped block 30 is arranged in a spiral shape, so that the outer arc surface of the special-shaped block 30 changes from small to large, so as to adapt to copper metal alloy materials with different hardness and improve the detection accuracy.

[0049] A protrusion 27 is fixedly connected to the inner wall of the second nut slider 24, and a groove 28 is formed on the outside of the second sliding frame 26. The protrusion 27 is matched with the groove 28, thereby improving the sliding accuracy of the two second sliding frames 26 and improving the detection accuracy of the copper metal alloy material.

[0050] The top of the second sliding frame 26 is rotatably connected to a rotating rod 29, and the special-shaped block 30 is fixedly sleeved on the outside of the rotating rod 29. A third fastening nut 37 is threadedly screwed on one side of the second sliding frame 26, and one end of the third fastening nut 37 abuts against the outside of the rotating rod 29. The top of the second sliding frame 26 is fixedly connected to a limited stop block 38.

[0051] By setting the above-mentioned structure, the special-shaped block 30 can be driven to rotate. Specifically, when it is necessary to rotate the curvature of the special-shaped block 30 according to the hardness of the material, the rotation of the special-shaped block 30 can be controlled by rotating the rotating rod 29. When the special-shaped block 30 needs to be fixed, the third fastening nut 37 is screwed. One end of the third fastening nut 37 abuts against the outside of the rotating rod 29 to fix the rotating rod 29, and at the same time, the special-shaped block 30 is indirectly fixed.

[0052] A protective shell 34 is fixedly connected to one side of the second sliding frame 26, and a ring 31 is provided inside the protective shell 34. The ring 31 is fixedly sleeved on the outside of the rotating rod 29, and a sleeve 32 is wrapped around the outside of the ring 31. A gravity block 33 is fixedly connected to the bottom of the sleeve 32. The gravity block 33 is slidably connected to the inside of the protective shell 34, and a second distance scale 35 is fixedly connected to the outside of the protective shell 34, and the second distance scale 35 is adapted to the gravity block 33.

[0053] By setting the above-mentioned structure, the two special-shaped blocks 30 can be accurately rotated, so that the curvature of the two special-shaped blocks 30 after adjustment remains consistent, thereby improving the detection accuracy of copper metal alloy materials. Specifically, the rotating rod 29 is rotated, and the ring 31 outside the rotating rod 29 is rotated. The rotation of the ring 31 drives the sleeve 32 to rotate, and the rotation of the sleeve 32 drives the gravity block 33 to move up and down. The second distance ruler 35 provided in combination can accurately control the rotation angle of the special-shaped block 30.

[0054] It is worth mentioning that since the second sliding frame 26 is slidably connected to the inside of the second nut slider 24, when the second sliding frame 26 is subjected to force, the force will be directly transmitted to the first detection shell 5, thereby preventing the second double-start threaded rod 23 from being disturbed by the force.

[0055] Working principle of the present invention: During use, before testing the copper metal alloy material, it is necessary to adjust the distance of the pressure point according to the copper metal alloy material of different sizes and types. At this time, the second screw cap 39 is manually turned, and the second screw cap 39 rotates to drive the first double-headed threaded rod 16 to rotate. The first double-headed threaded rod 16 rotates to drive the two first nut sliders 17 to move relative to each other. The movement of the two first nut sliders 17 drives the two first sliding frames 19 to move, and the distance between the two first sliding frames 19 is accurately adjusted by the first distance ruler 40 outside the second detection shell 14;

[0056] When the distance adjustment is completed, the second screw rods 21 or the first screw rods 20 on the two first sliding frames 19 are adjusted and rotated at the same time according to the hardness of the copper metal alloy material:

[0057] When the hardness of the copper alloy material is poor, it means that the ductility is good. At this time, the second screw rod 21 on the left first sliding frame 19 is rotated clockwise, and the second screw rod 21 on the right first sliding frame 19 is rotated counterclockwise, so that part of the driving sheet 22 outside the first screw rod 20 that is close to each other is wrapped around the outside of the second screw rod 21, so that the radius of the second screw rod 21 is increased, the inclination of the arc surface outside the second screw rod 21 is reduced, and the contact surface with the copper alloy material is increased, so that the copper alloy material can withstand a larger bending force, and the copper alloy material is prevented from being damaged during the detection process, resulting in a decrease in detection accuracy;

[0058] When the hardness of the copper metal alloy material is high, it means that the ductility is poor. At this time, the first screw rod 20 on the left first sliding frame 19 is rotated counterclockwise, and the first screw rod 20 on the right first sliding frame 19 is rotated clockwise, so that part of the driving sheet 22 outside the second screw rod 21 that is close to each other is wrapped around the outside of the first screw rod 20, so that the radius of the second screw rod 21 is reduced, the inclination of the arc surface outside the second screw rod 21 is increased, and the contact surface with the copper metal alloy material is reduced, so that the copper metal alloy material can be bent better, and the copper metal alloy material is prevented from being unable to bend well at the contact point due to the large contact point during the detection process, which affects the detection value.

[0059] Before testing the copper alloy material, it is necessary to adjust the placement point distance according to the copper alloy material of different sizes and types. At this time, the manual knob first screws the cap 8, and the first screws the cap 8 to rotate to drive the second double-headed threaded rod 23 to rotate. The second double-headed threaded rod 23 rotates to drive the two second nut sliders 24 to move relative to each other. The two second nut sliders 24 move relative to each other to drive the second sliding frame 26 thereon to move, and the third distance ruler 36 cooperates with the adjacent second sliding frame 26 to accurately adjust the distance between the two second sliding frames 26.

[0060] When the curvature of the special-shaped block 30 needs to be rotated and selected according to the hardness of the material, the rotation rod 29 can be rotated to control the rotation of the special-shaped block 30. When the special-shaped block 30 needs to be fixed, the third fastening nut 37 is screwed, and one end of the third fastening nut 37 abuts against the outside of the rotating rod 29 to fix the rotating rod 29 and indirectly fix the special-shaped block 30.

[0061] When all adjustments are completed, the copper metal alloy material is placed on the top of the two special-shaped blocks 30, and the hydraulic cylinder 9 is started. The output end of the hydraulic cylinder 9 moves and drives the sliding plate 7 to move up and down inside the limiting shell 6. The movement of the sliding plate 7 drives the second detection shell 14 to move downward, and at the same time drives the two first sliding frames 19 to continue to move downward, and the copper metal alloy material begins to be detected;

[0062] During the detection process, when it is necessary to use the two fixed upper contacts for detection, the second detection shell 14 is fixed inside the mounting frame 11 by turning the second fastening nut 13 of the knob to perform normal detection;

[0063] When the two movable upper contacts need to be used for detection during the detection process, the second fastening nut 13 is loosened at this time, so that the second detection shell 14 can rotate at the bottom of the mounting frame 11. During the detection process, the two first sliding frames 19 continue to move downward. Since the stress value of the copper metal alloy material may be inconsistent, the side with a large stress value remains stationary, while the side with a small stress value continues to move downward due to pressure to reduce the pressure on the side with a large stress value. At the same time, the side with a small stress value will cause the side with a large stress value to change due to pressure deformation to relieve stress, thereby improving the detection accuracy. The shape changes of the high-copper metal alloy material during bending can be monitored in real time through the two infrared distance sensors 15, thereby completing accurate detection of copper metal alloy materials in different specifications and under different conditions.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A testing device for the bending strength of copper metal alloy materials, characterized in that: include, A workbench (1), the workbench (1) comprising a work table (3) placed on the ground; A detection mechanism (2), the detection mechanism (2) being used to detect the bending strength of a copper metal alloy material, the detection mechanism (2) comprising a detection table (4) placed on top of a work table (3), the top of the detection table (4) being fixedly connected to a limit shell (6), the interior of the limit shell (6) being slidably connected to a sliding plate (7); The bottom of the sliding plate (7) is movably plugged with a mounting frame (11), two infrared distance sensors (15) are fixedly mounted inside the mounting frame (11), the bottom of the mounting frame (11) is rotatably connected to a second detection shell (14), the output ends of the two infrared distance sensors (15) are both adapted to the top of the second detection shell (14), the bottom of the second detection shell (14) is slidably connected to two first sliding frames (19), the insides of the two first sliding frames (19) are both connected to a first screw rod (20) and a second screw rod (21) in a damped rotation manner, and the outside of the second screw rod (21) of the first screw rod (20) is wrapped with a same driving sheet (22); The second detection shell (14) is rotatably connected to a first double-headed threaded rod (16) inside, the first double-headed threaded rod (16) is screwed to two first nut sliders (17) on its external threads, the two first nut sliders (17) are both slidably connected to the inside of the second detection shell (14), the two first sliding frames (19) are both slidably connected to the bottom of adjacent first nut sliders (17), both sides of the second detection shell (14) are fixedly connected to limit blocks (18), and the two first sliding frames (19) are both slidably connected to the outside of the two limit blocks (18); A first detection shell (5) is movably inserted at the top of the detection platform (4); two second sliding frames (26) are slidably connected to the top of the first detection shell (5); the tops of the two second sliding frames (26) are rotatably connected to a special-shaped block (30); the outer contour of the special-shaped block (30) is in a spiral arrangement.

2. A copper alloy material bending strength testing device according to claim 1, characterized in that: A hydraulic cylinder (9) is fixedly mounted on the top of the inner wall of the limit shell (6); the top of the sliding plate (7) is fixedly connected to the output end of the hydraulic cylinder (9); the bottom of the sliding plate (7) is fixedly connected to a mounting sleeve (10); the external thread of the mounting sleeve (10) is screwed with a first fastening nut (12); one end of the first fastening nut (12) abuts against the outside of the mounting frame (11); the bottom of the mounting frame (11) is rotatably connected to a second fastening nut (13); and the second detection shell (14) is rotatably connected to the outside of the second fastening nut (13).

3. A copper alloy material bending strength testing device according to claim 1, characterized in that: A first distance ruler (40) is fixedly connected to one side of the second detection shell (14), the first distance ruler (40) is adapted to a first sliding frame (19) adjacent thereto, both ends of the first double-ended threaded rod (16) extend to the outside of the second detection shell (14), and both ends of the first double-ended threaded rod (16) are fixedly connected to second screw caps (39).

4. A copper alloy material bending strength testing device according to claim 1, characterized in that: A second double-headed threaded rod (23) is rotatably connected inside the first detection shell (5); two second nut sliders (24) are screwed onto the external threads of the second double-headed threaded rod (23); the two second nut sliders (24) are both slidably connected to the top of the first detection shell (5); a tension spring (25) is fixedly connected to the top of the second nut slider (24); the top of the tension spring (25) is fixedly connected to the bottom of an adjacent second sliding frame (26); a protrusion (27) is fixedly connected to the inner wall of the second nut slider (24); a groove (28) is provided on the outside of the second sliding frame (26); the protrusion (27) is matched with the groove (28); and the two second sliding frames (26) are both slidably connected to the inside of the adjacent second nut sliders (24).

5. A copper alloy material bending strength testing device according to claim 4, characterized in that: The top of the second sliding frame (26) is rotatably connected to a rotating rod (29), the special-shaped block (30) is fixedly sleeved on the outside of the rotating rod (29), a third fastening nut (37) is threadedly screwed on one side of the second sliding frame (26), one end of the third fastening nut (37) abuts against the outside of the rotating rod (29), and the top of the second sliding frame (26) is fixedly connected to a limit stopper (38).

6. A copper alloy material bending strength testing device according to claim 5, characterized in that: A protective shell (34) is fixedly connected to one side of the second sliding frame (26); a collar (31) is arranged inside the protective shell (34); the collar (31) is fixedly sleeved on the outside of the rotating rod (29); a sleeve (32) is wound around the outside of the collar (31); a gravity block (33) is fixedly connected to the bottom of the sleeve (32); the gravity block (33) is slidably connected to the inside of the protective shell (34); a second distance scale (35) is fixedly connected to the outside of the protective shell (34); the second distance scale (35) is matched with the gravity block (33).

7. A copper alloy material bending strength testing device according to claim 6, characterized in that: Both ends of the second double-ended threaded rod (23) extend to the outside of the first detection shell (5), and both ends of the second double-ended threaded rod (23) are fixedly connected to first screw caps (8), and the outside of the first detection shell (5) is fixedly connected to a third distance ruler (36), and the third distance ruler (36) is adapted to fit a second sliding frame (26) adjacent thereto.

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