Copper-based alloy fatigue test device

Abstract

The utility model discloses a copper-based alloy fatigue test device which comprises a datum plate, a first clamping plate and a second clamping plate, a supporting frame and two groups of supporting tables are arranged on the upper portion of the datum plate, the two groups of supporting tables are symmetrically arranged through the supporting frame, copper-based alloy plates are placed on the upper portions of the supporting tables, and a loading plate is arranged above each group of supporting tables. The loading plate can move up and down through a pre-pressing mechanism and is used for abutting against or separating from the upper portion of the copper-based alloy plate, the pre-pressing mechanism is located on the outer side of the supporting table, first screws are arranged at the positions, close to the two ends, of the loading plate, the lower portions of the first screws are fixed to the datum plate, and the upper portions of the first screws penetrate through the loading plate and are connected with the loading plate; the first clamping plate is located on the upper portion of the copper-based alloy plate, the second clamping plate is located on the lower portion of the copper-based alloy plate, the first clamping plate and the second clamping plate are fixedly connected through a screw set, a beam is fixed in the supporting frame, the lower portion of the beam is connected with a first oil cylinder, and a telescopic rod of the first oil cylinder is connected with the first clamping plate. Through cooperation of the loading plate and the pre-pressing mechanism, the copper-based alloy plate can be pre-fixed, and the copper-based alloy plate is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of fatigue testing devices, and more specifically, to a copper-based alloy fatigue testing device. Background Art

[0002] High-performance copper-based alloys feature high strength, high toughness, high wear resistance, and long fatigue life. Their manufacturing processes include smelting, casting, forging, extrusion, and drawing. Specialized heat treatment processes can enhance the performance of copper alloys. Therefore, testing the chemical, mechanical, and physical properties of high-performance copper-based alloys is particularly important.

[0003] Currently, when fatigue testing high-performance copper-based alloy materials, the copper-based alloy plate needs to be fixed with two sets of splints, and then force is applied to the two sets of splints through external power equipment. The tension or pressure on the two sets of splints will be transmitted to the surface of the copper-based alloy sample, realizing the requirements of simulating the tensile and compressive load testing conditions of the copper-based alloy, thereby conducting fatigue testing on the copper-based alloy.

[0004] The current testing device has shortcomings. First, the two sets of clamps are fixed by screws and nuts. When the nuts are tightened, the clamping force of the two sets of clamps on the copper-based alloy plates cannot be effectively controlled, which leads to errors in the test results. Second, the installation and disassembly of the copper-based alloy plates is very cumbersome and inefficient, so improvements are urgently needed. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and provide a copper-based alloy fatigue testing device, which can pre-fix the copper-based alloy plate through the cooperation of the loading plate and the preloading mechanism, thereby facilitating the disassembly and assembly of the copper-based alloy plate.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model discloses a copper-based alloy fatigue test device, comprising a reference plate, a first clamping plate and a second clamping plate; a support frame and two groups of support platforms are provided on the upper portion of the reference plate; the two groups of support platforms are symmetrically arranged through the support frame; a copper-based alloy plate is placed on the upper portion of the support platform; a loading plate is provided above each group of support platforms; the loading plate can be moved up and down by a pre-pressing mechanism to abut against or disengage from the upper portion of the copper-based alloy plate; the pre-pressing mechanism is located outside the support platform; a first screw is provided near both ends of the loading plate; the lower portion of the first screw is fixed to the reference plate and the upper portion of the first screw passes through the loading plate and is connected to the loading plate;

[0008] The first splint is located at the upper part of the copper-based alloy plate, and the second splint is located at the lower part of the copper-based alloy plate. The first splint and the second splint are fixedly connected by a screw group. A crossbeam is fixed inside the support frame, and a first oil cylinder is connected to the lower part of the crossbeam. The telescopic rod of the first oil cylinder is connected to the first splint.

[0009] Furthermore, there are four support platforms, which are respectively located at the four corners below the copper-based alloy plate. The pre-stressing mechanism includes a third oil cylinder fixed on the upper part of the reference plate. The end of the telescopic rod of the third oil cylinder abuts the lower part of the loading plate. The third oil cylinder can drive the loading plate to move up and down.

[0010] Furthermore, a connecting rod is provided at the end of the telescopic rod of the third oil cylinder, and the connecting rod passes through the loading plate from bottom to top. A spring is sleeved on the outside of the connecting rod, and a fastener is connected to the outside of the connecting rod. The lower part of the spring abuts the upper part of the loading plate and the upper part abuts the lower part of the fastener.

[0011] Furthermore, a second oil cylinder is installed inside the reference plate, and the end of the telescopic rod of the second oil cylinder is connected to the second clamping plate. The second oil cylinder can drive the second clamping plate to move up and down.

[0012] Furthermore, the lower end of the screw rod group is fixed to the second clamping plate. When the second oil cylinder drives the second clamping plate to rise, the screw rod group can pass through the first clamping plate and be connected and fixed to the first clamping plate through a nut.

[0013] Furthermore, the first oil cylinder and the second oil cylinder are located on the same straight line, and the first oil cylinder and the second oil cylinder are located at the center of the copper-based alloy plate.

[0014] Furthermore, the first clamping plate includes a plurality of longitudinally arranged first force transmission plates, the second clamping plate includes a third force transmission plate corresponding to the first force transmission plate, and the first force transmission plates and the second force transmission plates located on the same vertical plane are fixedly connected by a second screw.

[0015] Furthermore, a first connecting plate arranged transversely is fixed to the upper portion of the first force transmission plate, a plurality of second force transmission plates arranged longitudinally are fixed to the upper portion of the first connecting plate, a third connecting plate arranged transversely is fixed to the lower portion of the third force transmission plate, a fourth force transmission plate corresponding to the second force transmission plate is fixed to the lower portion of the third connecting plate, and the second force transmission plate and the fourth force transmission plate located on the same vertical plane are fixedly connected by a third screw.

[0016] Furthermore, the first splint includes a first connecting member, a hinge seat is provided on the upper portion of the first connecting member, and the end of the telescopic rod of the first oil cylinder is hinged to the hinge seat.

[0017] Furthermore, a connecting block is fixed on the upper part of the first oil cylinder, and the connecting block is fixed to the crossbeam. The vertical section of the support frame is provided with a plurality of through holes distributed in a vertical array, and the crossbeam can be connected to the through holes at different positions so that the crossbeam can be moved up and down to adjust its position.

[0018] The beneficial effects of the utility model are:

[0019] 1. When the copper-based alloy plate needs to be tested, the copper-based alloy plate is passed between the loading plate and the support platform and placed on the upper part of the support platform. After adjusting the position of the copper-based alloy plate, the third oil cylinder is started to drive the loading plate down until the loading plate abuts the upper part of the copper-based alloy plate and the spring is compressed. At this time, it is only necessary to screw the nut located on the first screw until the nut abuts the upper part of the loading plate to complete the pre-fixation of the copper-based alloy plate. Through the cooperation of the third oil cylinder, the spring and the loading plate, not only can the pre-pressure of the copper-based alloy plate be controlled to prevent the surface deformation of the copper-based alloy plate, but also the fixing operation of the copper-based alloy plate can be facilitated;

[0020] 2. In the present invention, by fixing the second screw and the third screw to the second clamping plate and driving the second clamping plate to move up and down by the second oil cylinder, the efficiency of disassembly and assembly of the copper-based alloy plate can be greatly improved, which is conducive to improving the testing efficiency of the copper-based alloy plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A structural diagram of this embodiment;

[0022] Figure 2 It is a partial cross-sectional view of the main view of this embodiment;

[0023] Figure 3 It is a partial cross-sectional view of the side view of this embodiment.

[0024] Figure numerals: 1. reference plate; 11. support frame; 12. crossbeam; 13. connecting block; 14. through hole; 15. support platform; 16. first screw; 2. loading plate; 3. first oil cylinder; 4. first clamping plate; 41. first force transmission plate; 42. first connecting plate; 43. second force transmission plate; 44. second connecting plate; 45. first connecting member; 46. hinge seat; 5. second clamping plate; 51. third force transmission plate; 52. third connecting plate; 53. fourth force transmission plate; 54. second screw; 55. third screw; 56. second connecting member; 6. second oil cylinder; 7. pre-stressing mechanism; 71. third oil cylinder; 72. connecting rod; 73. spring; 74. fastener; 8. copper-based alloy plate. DETAILED DESCRIPTION

[0025] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0026] like Figures 1 to 3 As shown, a copper-based alloy fatigue test device includes a reference plate 1, a first clamping plate 4 and a second clamping plate 5. A support frame 11 and two groups of support platforms 15 are provided on the upper part of the reference plate 1. The two groups of support platforms 15 are symmetrically arranged through the support frame 11. A copper-based alloy plate 8 is placed on the upper part of the support platform 15. A loading plate 2 is provided above each group of support platforms 15. The loading plate 2 can move up and down through a pre-pressing mechanism 7 to abut or disengage from the upper part of the copper-based alloy plate 8. The pre-pressing mechanism 7 is located outside the support platform 15. A first screw 16 is provided near both ends of the loading plate 2. The lower part of the first screw 16 is fixed to the reference plate 1 and the upper part passes through the loading plate 2. And it is connected to the loading plate 2. Specifically, there are four support platforms 15 and they are respectively located at the four corners below the copper-based alloy plate 8. The pre-stressing mechanism 7 includes a third oil cylinder 71 fixed on the upper part of the reference plate 1. The end of the telescopic rod of the third oil cylinder 71 abuts the lower part of the loading plate 2. The third oil cylinder 71 can drive the loading plate 2 to move up and down. The end of the telescopic rod of the third oil cylinder 71 is provided with a connecting rod 72. The connecting rod 72 passes through the loading plate 2 from bottom to top. A spring 73 is sleeved on the outside of the connecting rod 72. A fastener 74 is connected to the outside of the connecting rod 72. The lower part of the spring 73 abuts the upper part of the loading plate 2 and the upper part abuts the lower part of the fastener 74.

[0027] When the copper-based alloy plate 8 needs to be tested, the copper-based alloy plate 8 is passed between the loading plate 2 and the support platform 15 and placed on the upper part of the support platform 15. After adjusting the position of the copper-based alloy plate 8, the third oil cylinder 71 is started to drive the loading plate 2 down until the loading plate 2 abuts against the upper part of the copper-based alloy plate 8 and the spring 73 is compressed. At this time, it is only necessary to screw the nut located at the first screw 16 until the nut abuts against the upper part of the loading plate 2 to complete the pre-fixation of the copper-based alloy plate 8. Through the cooperation of the third oil cylinder 71, the spring 73 and the loading plate 2, not only can the pre-pressure of the copper-based alloy plate 8 be controlled and the surface deformation of the copper-based alloy plate 8 be prevented, but also the fixing operation of the copper-based alloy plate 8 can be facilitated; when the copper-based alloy plate 8 needs to be removed, the nut at the first screw 16 must be screwed to the appropriate height first, and then the third oil cylinder 71 works to drive the loading plate 2 to rise and separate from the copper-based alloy plate 8.

[0028] The first clamping plate 4 is located at the upper part of the copper-based alloy plate 8, and the second clamping plate 5 is located at the lower part of the copper-based alloy plate 8. The first clamping plate 4 and the second clamping plate 5 are fixedly connected by a screw group. Specifically, the first clamping plate 4 includes a plurality of longitudinally arranged first force transmission plates 41, and the second clamping plate 5 includes a third force transmission plate 51 corresponding to the first force transmission plate 41. The first force transmission plate 41 and the third force transmission plate 51 located on the same vertical plane are fixedly connected by a second screw 54. A transversely arranged first connecting plate 42 is fixed on the upper part of the first force transmission plate 41, and a plurality of longitudinally arranged second force transmission plates 43 are fixed on the upper part of the first connecting plate 42. A third connecting plate 52 is fixed to the lower part of the plate 51 in a transverse manner, and a fourth force transmission plate 53 corresponding to the second force transmission plate 43 is fixed to the lower part of the third connecting plate 52. The second force transmission plate 43 and the fourth force transmission plate 53 located on the same vertical plane are fixedly connected by a third screw 55. In the utility model, by arranging the first force transmission plate 41, the second force transmission plate 43, the third force transmission plate 51 and the fourth force transmission plate 53, the tested tension or pressure can be evenly transmitted step by step to the surface of the copper-based alloy plate 8, so that the copper-based alloy plate 8 can evenly withstand the requirements of the tensile and compressive load detection conditions. The structure is stable and reliable, the force is evenly applied, and the accuracy of fatigue testing of the copper-based alloy plate 8 can be improved.

[0029] Among them, a crossbeam 12 is fixed inside the support frame 11, and the lower part of the crossbeam 12 is connected to the first oil cylinder 3, and the telescopic rod of the first oil cylinder 3 is connected to the first splint 4. Specifically, the first splint 4 includes a first connecting member 45 and a second connecting plate 44, and the lower part of the first connecting member 45 is fixed to the upper part of the second connecting plate 44, and the lower part of the second connecting plate 44 is fixed to the upper part of the second force transmission plate 43. A hinge seat 46 is provided on the upper part of the first connecting member 45, and the end of the telescopic rod of the first oil cylinder 3 is hinged to the hinge seat 46. Through the first oil cylinder 3, not only can the first splint 4 be driven up and down, but also the copper-based alloy plate 8 can be subjected to tension and pressure fatigue resistance tests.

[0030] A second oil cylinder 6 is installed inside the reference plate 1, and the end of the telescopic rod of the second oil cylinder 6 is connected to the second splint 5, and the second oil cylinder 6 can drive the second splint 5 to move up and down, and the lower end of the screw group is fixed to the second splint 5. When the second oil cylinder 6 drives the second splint 5 to rise, the screw group can pass through the first splint 4 and be connected and fixed to the first splint 4 by a nut. Specifically, a second connecting piece 56 is fixed to the lower part of the fourth force transmission plate 53, and the telescopic rod of the second oil cylinder 6 is fixed to the second connecting piece 56. The second oil cylinder 6 can drive the second splint 5 to move up and down to abut or disengage from the lower part of the copper-based alloy plate 8. The screw group includes a second screw 54 and a third screw 55. One end of the second screw 54 is fixed to the third force transmission plate 51, and one end of the third screw 55 is fixed to the fourth force transmission plate 53;

[0031] After the copper-based alloy plate 8 is pre-fixed, the first oil cylinder 3 first works to drive the first clamping plate 4 to descend and abut against the upper surface of the copper-based alloy plate 8, and then the second oil cylinder 6 works to drive the second clamping plate 5 to rise and abut against the lower surface of the copper-based alloy plate 8. During the rising process of the second clamping plate 5, the second screw 54 is inserted into and passes through the first force transmission plate 41, and the third screw 55 is inserted into and passes through the second force transmission plate 43. Finally, the first clamping plate 4 and the second clamping plate 5 are fixed by the nuts located at the second screw 54 and the third screw 55. In the utility model, by fixing the second screw 54 and the third screw 55 to the second clamping plate 5 and driving the second clamping plate 5 to rise and fall by the second oil cylinder 6, the disassembly and assembly efficiency of the copper-based alloy plate 8 can be greatly improved, which is beneficial to improving the testing efficiency of the copper-based alloy plate 8.

[0032] Among them, the first oil cylinder 3 and the second oil cylinder 6 are located on the same straight line, and the first oil cylinder 3 and the second oil cylinder 6 are located at the center of the copper-based alloy plate 8. When the first oil cylinder 3 is performing fatigue resistance test, the second oil cylinder 6 relieves pressure and does not work.

[0033] A connecting block 13 is fixed to the upper part of the first oil cylinder 3, and the connecting block 13 is fixed to the crossbeam 12. The vertical section of the support frame 11 is provided with a plurality of through holes 14 distributed in a vertical array. The crossbeam 12 can be connected to the through holes 14 at different positions so that the crossbeam 12 can be moved up and down to adjust its position. By providing a crossbeam 12 that can adjust its position up and down, the testing requirements for copper-based alloy plates 8 of different thicknesses can be met.

[0034] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A copper-based alloy fatigue testing device, characterized in that: It comprises a reference plate (1), a first clamping plate (4) and a second clamping plate (5); a support frame (11) and two groups of support platforms (15) are provided on the upper part of the reference plate (1); the two groups of support platforms (15) are symmetrically arranged through the support frame (11); a copper-based alloy plate (8) is placed on the upper part of the support platform (15); a loading plate (2) is provided above each group of support platforms (15); the loading plate (2) can be moved up and down by a pre-pressing mechanism (7) to abut against or disengage from the upper part of the copper-based alloy plate (8); the pre-pressing mechanism (7) is located outside the support platform (15); a first screw (16) is provided near both ends of the loading plate (2); the lower part of the first screw (16) is fixed to the reference plate (1) and the upper part passes through the loading plate (2) and is connected to the loading plate (2); The first clamping plate (4) is located on the upper part of the copper-based alloy plate (8), and the second clamping plate (5) is located on the lower part of the copper-based alloy plate (8). The first clamping plate (4) and the second clamping plate (5) are fixedly connected by a screw group. A crossbeam (12) is fixed inside the support frame (11), and the lower part of the crossbeam (12) is connected to the first oil cylinder (3). The telescopic rod of the first oil cylinder (3) is connected to the first clamping plate (4).

2. A copper-based alloy fatigue testing device according to claim 1, characterized in that: There are four support platforms (15) and they are respectively located at the four corners below the copper-based alloy plate (8). The pre-pressing mechanism (7) includes a third oil cylinder (71) fixed on the upper part of the reference plate (1). The end of the telescopic rod of the third oil cylinder (71) abuts against the lower part of the loading plate (2). The third oil cylinder (71) can drive the loading plate (2) to move up and down.

3. A copper-based alloy fatigue testing device according to claim 2, characterized in that: A connecting rod (72) is provided at the end of the telescopic rod of the third oil cylinder (71). The connecting rod (72) penetrates the loading plate (2) from bottom to top. A spring (73) is sleeved on the outside of the connecting rod (72). A fastener (74) is connected to the outside of the connecting rod (72). The lower part of the spring (73) abuts against the upper part of the loading plate (2), and the upper part abuts against the lower part of the fastener (74).

4. A copper-based alloy fatigue testing device according to claim 1, characterized in that: A second oil cylinder (6) is installed inside the reference plate (1), and the end of the telescopic rod of the second oil cylinder (6) is connected to the second clamping plate (5). The second oil cylinder (6) can drive the second clamping plate (5) to move up and down.

5. A copper-based alloy fatigue testing device according to claim 4, characterized in that: The lower end of the screw rod group is fixed to the second clamping plate (5). When the second oil cylinder (6) drives the second clamping plate (5) to rise, the screw rod group can pass through the first clamping plate (4) and be connected and fixed to the first clamping plate (4) through a nut.

6. The copper-based alloy fatigue testing device according to claim 1, characterized in that: The first oil cylinder (3) and the second oil cylinder (6) are located on the same straight line, and the first oil cylinder (3) and the second oil cylinder (6) are located at the center of the copper-based alloy plate (8).

7. The copper-based alloy fatigue testing device according to claim 1, characterized in that: The first clamping plate (4) includes a plurality of longitudinally arranged first force transmission plates (41), and the second clamping plate (5) includes a third force transmission plate (51) corresponding to the first force transmission plates (41). The first force transmission plates (41) and the third force transmission plates (51) located on the same vertical plane are fixedly connected by a second screw (54).

8. A copper-based alloy fatigue testing device according to claim 7, characterized in that: A first connecting plate (42) arranged transversely is fixed on the upper portion of the first force transmission plate (41), a plurality of second force transmission plates (43) arranged longitudinally are fixed on the upper portion of the first connecting plate (42), a third connecting plate (52) arranged transversely is fixed on the lower portion of the third force transmission plate (51), a fourth force transmission plate (53) corresponding to the second force transmission plate (43) is fixed on the lower portion of the third connecting plate (52), and the second force transmission plate (43) and the fourth force transmission plate (53) located on the same vertical plane are fixedly connected by a third screw (55).

9. The copper-based alloy fatigue testing device according to claim 1, characterized in that: The first clamping plate (4) comprises a first connecting member (45), a hinge seat (46) is provided on the upper portion of the first connecting member (45), and the end of the telescopic rod of the first oil cylinder (3) is hinged to the hinge seat (46).

10. The copper-based alloy fatigue testing device according to claim 1, characterized in that: A connecting block (13) is fixed to the upper part of the first oil cylinder (3), and the connecting block (13) is fixed to the crossbeam (12). The vertical section of the support frame (11) is provided with a plurality of through holes (14) distributed in a vertical array, and the crossbeam (12) can be connected to the through holes (14) at different positions, so that the crossbeam (12) can be moved up and down to adjust its position.

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