Titanium alloy stress corrosion fatigue testing machine

Abstract

The utility model discloses a titanium alloy stress corrosion fatigue testing machine which comprises a fatigue testing table, a vibration machine is fixedly installed at the center position of the lower end of the fatigue testing table, supporting legs are fixedly installed at the four corners of the lower end of the fatigue testing table, testing barrels are symmetrically arranged at the upper end of the fatigue testing table, and every two testing barrels are symmetrically arranged. The test barrels are symmetrically arranged in pairs and are respectively arranged on two sides of the fatigue test bench, through the arrangement of the driving motor, the driving cavity, the connecting shaft, the first bevel gear, the sliding groove, the sliding block, the threaded rod and the second bevel gear, the driving motor can drive the connecting shaft to rotate, so that a titanium alloy test workpiece is clamped and fixed through the clamping jaw, and the fatigue test efficiency is improved. The clamping body is arranged to be hollow, materials used by the clamping body can be reduced, cost is saved, and the device has the advantages of being high in practicability and convenient to test.

Description

Technical Field

[0001] The utility model relates to the technical field of stress corrosion fatigue test, in particular to a stress corrosion fatigue testing machine for titanium alloy. Background Technique

[0002] Titanium alloy is an excellent material with lightweight, high strength and corrosion resistance, and is widely used in the fields of aviation, aerospace, automobiles, etc. However, titanium alloy is prone to stress corrosion fatigue phenomenon under high stress and corrosive environment, resulting in material failure. In order to evaluate the performance of titanium alloy in such harsh environments, a corrosion fatigue testing machine is needed. This testing machine can simulate high stress and corrosive environment, conduct fatigue tests on titanium alloy materials under different stress amplitudes and frequencies, and monitor the crack propagation of the materials in real time to evaluate its durability.

[0003] The utility model with the publication number of CN220231419U discloses a stress corrosion fatigue testing machine for titanium alloy, which relates to the technical field of fatigue testing machines, including a fatigue testing machine, a stepping motor, a conductive plate, a low-frequency guide plate, an intermediate-frequency guide plate and a high-frequency guide plate. The output shaft of the stepping motor is fixedly connected with an insulating threaded rod, the surface of the insulating threaded rod is threadedly connected with a metal threaded block, the bottom end of the metal threaded block is fixedly connected with a conductive block, a conductive sliding groove is opened in the conductive plate, a conductive sliding block is arranged inside the conductive sliding groove, and the bottom end of the conductive sliding block is fixedly connected with the surface of the metal threaded block. However, when this utility model is used, it is more inconvenient during the corrosion environment test, and it can only simulate the high stress environment, and the test is more inconvenient. Therefore, it is very necessary to design a stress corrosion fatigue testing machine for titanium alloy with strong practicability and convenient test. Content of the Utility Model

[0004] The purpose of the utility model is to provide a stress corrosion fatigue testing machine for titanium alloy to solve the problems put forward in the above background technique.

[0005] In order to solve the above technical problems, the utility model provides the following technical solution: A stress corrosion fatigue testing machine for titanium alloy, including a fatigue test bench, a vibrator is fixedly installed at the center position of the lower end of the fatigue test bench, support legs are fixedly installed at the four corners of the lower end of the fatigue test bench, test barrels are symmetrically arranged at the upper end of the fatigue test bench, the test barrels are arranged in pairs symmetrically, the upper end of the test barrel is movably installed with a barrel cover through a lifting component, a test cavity is jointly formed between the test barrel and the barrel cover, a fixing plate is fixedly installed at the center position of the lower end of the barrel cover, a clamping claw is movably installed at the lower end of the fixing plate through a driving component, the clamping claw includes a clamping body and a clamping position body, and the clamping position body is fixedly installed at the end of the clamping body.

[0006] According to the above technical solution, the lifting assembly includes a cylinder, a lifting seat and a connecting rod. The cylinder is fixedly installed at the middle position of the upper end of the fatigue test bench. The lifting seat is fixedly connected to the telescopic end of the cylinder. The lifting seat is arranged at the middle position of the bucket cover. The bucket cover and the lifting seat are fixedly connected by a connecting rod.

[0007] According to the above technical solution, the driving assembly includes a driving motor, a driving cavity, a connecting shaft, a first bevel gear, a chute, a slider, a threaded rod and a second bevel gear. The driving motor is fixedly installed at the upper end of the bucket cover. The output end of the driving motor is fixedly installed with the connecting shaft. The driving cavity is opened at the central position inside the fixing plate. The lower end of the connecting shaft extends into the driving cavity and is fixedly installed with the first bevel gear. The chutes are circumferentially distributed outside the driving cavity. The threaded rod is movably installed in the chute. The threaded rod is threadedly connected with the slider. The lower end of the slider is fixedly connected to the upper end of the clamping body. One end of the threaded rod extends into the driving cavity and is fixedly installed with the second bevel gear. The second bevel gear meshes with the first bevel gear.

[0008] According to the above technical solution, the lower end of the test bucket is symmetrically and fixedly installed with clamping blocks. The upper end of the fatigue test bench is symmetrically provided with clamping grooves. The clamping blocks are movably installed in the corresponding clamping grooves.

[0009] According to the above technical solution, a sealing gasket is fixedly installed at the upper end of the test bucket.

[0010] According to the above technical solution, the clamping body is hollow.

[0011] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows: The test barrels in the present utility model are arranged symmetrically in pairs and are respectively arranged on both sides of the fatigue test bench. Through the settings of the drive motor, drive cavity, connecting shaft, first bevel gear, chute, slider, threaded rod, and second bevel gear, the connecting shaft can be driven to rotate by the drive motor, and through the transmission of the first bevel gear and the second bevel gear, the threaded rod is driven to rotate, so that the slider moves along the direction of the chute, and the titanium alloy test workpiece is clamped and fixed by the clamping claws. The clamping body is set to be hollow, which can reduce the material used for the clamping body and save costs. The clamping stability is improved by preventing the titanium alloy test workpiece from slipping through the positioning body. The titanium alloy test workpiece can be subjected to stress environment and corrosion environment tests in the test cavity, and comparative tests can be carried out to increase the accuracy of the tests. The corrosive liquid can be placed in the test barrel, and the inner wall of the test barrel is coated with anti-corrosion paint. The test barrel can be stabilized by the set clamping blocks and clamping grooves, and the stability of the test barrel is increased to prevent the test barrel from shifting. The sealing performance of the test cavity can be increased by the set sealing gasket to prevent the internal corrosive liquid from splashing out during the test. The lifting of the titanium alloy test workpiece is controlled by the lifting assembly, which is convenient for immersing the titanium alloy test workpiece in the corrosive liquid, with convenient and labor-saving operation and good comparability. The vibrator, cylinder, and drive motor in this application are all common technical means in this technical field, and applicable models can be selected according to requirements, and no further elaboration will be made here. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0013] Figure 1 is the first three-dimensional schematic diagram of the present utility model;

[0014] Figure 2 is the second three-dimensional schematic diagram of the present utility model;

[0015] Figure 3 is the front view sectional schematic diagram of the present utility model;

[0016] Figure 4 is the present utility model Figure 3 the enlarged schematic diagram at A in;

[0017] Figure 5 is the three-dimensional schematic diagram of the clamping claws of the present utility model;

[0018] In the figure: 1 - fatigue test bench, 2 - vibration machine, 3 - support leg, 4 - test bucket, 5 - lifting assembly, 501 - cylinder, 502 - lifting seat, 503 - connecting rod, 6 - bucket cover, 7 - test chamber, 8 - fixing plate, 9 - driving assembly, 901 - driving motor, 902 - driving chamber, 903 - connecting shaft, 904 - first bevel gear, 905 - chute, 906 - slider, 907 - threaded rod, 908 - second bevel gear, 10 - clamping jaw, 1001 - clamping body, 1002 - positioning body, 11 - clamping block, 12 - clamping groove, 13 - sealing gasket. Detailed implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-5 , the present invention provides a technical solution: a titanium alloy stress corrosion fatigue testing machine, including a fatigue test bench 1, a vibration machine 2 is fixedly installed at the center position of the lower end of the fatigue test bench 1, support legs 3 are fixedly installed at the four corners of the lower end of the fatigue test bench 1, test buckets 4 are symmetrically arranged at the upper end of the fatigue test bench 1, the test buckets 4 are arranged in pairs symmetrically, a bucket cover 6 is movably installed at the upper end of the test bucket 4 through a lifting assembly 5, a test chamber 7 is jointly formed between the test bucket 4 and the bucket cover 6, a fixing plate 8 is fixedly installed at the center position of the lower end of the bucket cover 6, a clamping jaw 10 is movably installed at the lower end of the fixing plate 8 through a driving assembly 9, the clamping jaw 10 includes a clamping body 1001 and a positioning body 1002, and the positioning body 1002 is fixedly installed at the end of the clamping body 1001. When the present invention is in use, the test buckets 4 are arranged in pairs symmetrically and are respectively arranged on both sides of the fatigue test bench 1. The titanium alloy test workpiece is clamped and fixed by the clamping jaw 10, and the positioning body 1002 is used to prevent the titanium alloy test workpiece from slipping, improving the clamping stability. The titanium alloy test workpiece conducts stress environment and corrosion environment tests in the test chamber 7, and comparative tests can be carried out. The corrosive liquid can be placed in the test bucket 4, and the inner wall of the test bucket 4 is coated with anti-corrosion paint. The lifting of the titanium alloy test workpiece is controlled by the lifting assembly 5, which is convenient for immersing the titanium alloy test workpiece in the corrosive liquid, with convenient and labor-saving operation and good comparability;

[0021] Specifically, the lifting assembly 5 includes a cylinder 501, a lifting seat 502, and a connecting rod 503. The cylinder 501 is fixedly installed at the middle position of the upper end of the fatigue test bench 1. The lifting seat 502 is fixedly connected to the telescopic end of the cylinder 501. The lifting seat 502 is arranged at the middle position of the bucket cover 6. The bucket cover 6 and the lifting seat 502 are fixedly connected by the connecting rod 503. By providing the cylinder 501, the lifting seat 502, and the connecting rod 503, the lifting of the bucket cover 6 can be controlled by the cylinder 501, facilitating the titanium alloy fatigue test.

[0022] Specifically, the driving assembly 9 includes a driving motor 901, a driving cavity 902, a connecting shaft 903, a first bevel gear 904, a chute 905, a slider 906, a threaded rod 907, and a second bevel gear 908. The driving motor 901 is fixedly installed at the upper end of the bucket cover 6. The output end of the driving motor 901 is fixedly installed with the connecting shaft 903. The driving cavity 902 is provided at the central position inside the fixing plate 8. The lower end of the connecting shaft 903 extends into the driving cavity 902 and is fixedly installed with the first bevel gear 904. The chutes 905 are circumferentially distributed outside the driving cavity 902. The threaded rod 907 is movably installed in the chute 905. The threaded rod 907 is threadedly connected with the slider 906. The lower end of the slider 906 is fixedly connected to the upper end of the clamping body 1001. One end of the threaded rod 907 extends into the driving cavity 902 and is fixedly installed with the second bevel gear 908. The second bevel gear 908 meshes with the first bevel gear 904. By providing the driving motor 901, the driving cavity 902, the connecting shaft 903, the first bevel gear 904, the chute 905, the slider 906, the threaded rod 907, and the second bevel gear 908, the driving motor 901 can drive the connecting shaft 903 to rotate, and through the transmission of the first bevel gear 904 and the second bevel gear 908, the threaded rod 907 can be driven to rotate, causing the slider 906 to move along the direction of the chute 905.

[0023] Specifically, the lower end of the test bucket 4 is symmetrically and fixedly installed with clamping blocks 11. The upper end of the fatigue test bench 1 is symmetrically provided with clamping grooves 12. The clamping blocks 11 are movably installed in the corresponding clamping grooves 12. By providing the clamping blocks 11 and the clamping grooves 12, the test bucket 4 can be stabilized, increasing the stability of the test bucket 4 and preventing the test bucket 4 from shifting.

[0024] Specifically, a sealing gasket 13 is fixedly installed at the upper end of the test bucket 4. By providing the sealing gasket 13, the sealing performance of the test cavity 7 can be improved, preventing the corrosive liquid inside from splashing out during the test.

[0025] Specifically, the clamping body 1001 is hollow. Setting the clamping body 1001 to be hollow can reduce the material used for the clamping body 1001 and save costs.

[0026] Working principle: When the utility model is in use, the test buckets 4 are arranged symmetrically in pairs and are respectively arranged on both sides of the fatigue test bench 1. Through the settings of the driving motor 901, the driving cavity 902, the connecting shaft 903, the first bevel gear 904, the chute 905, the slider 906, the threaded rod 907, and the second bevel gear 908, the driving motor 901 can drive the connecting shaft 903 to rotate, and through the transmission of the first bevel gear 904 and the second bevel gear 908, drive the threaded rod 907 to rotate, so that the slider 906 moves along the direction of the chute 905, and the titanium alloy test workpiece is clamped and fixed by the clamping claws 10. The clamping body 1001 is set to be hollow, which can reduce the material used for the clamping body 1001 and save costs. The positioning body 1002 is used to prevent the titanium alloy test workpiece from slipping and improve the clamping stability. The titanium alloy test workpiece conducts stress environment and corrosion environment tests in the test cavity 7, and comparative tests can be carried out to increase the accuracy of the test. The corrosive liquid can be placed in the test bucket 4, and the inner wall of the test bucket 4 is coated with an anti-corrosion coating. The test bucket 4 can be stabilized by the set clamping block 11 and clamping groove 12, increasing the stability of the test bucket 4 and preventing the test bucket 4 from shifting. The sealing gasket 13 can increase the sealing performance of the test cavity 7 and prevent the internal corrosive liquid from splashing during the test. The lifting assembly 5 controls the lifting of the titanium alloy test workpiece, facilitating the immersion of the titanium alloy test workpiece in the corrosive liquid. The operation is convenient and time-saving, and has good comparability. The vibrator 2, the cylinder 501, and the driving motor 901 in this application are all common technical means in the technical field, and applicable models can be selected according to requirements, and will not be elaborated too much here.

[0027] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0028] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A titanium alloy stress corrosion fatigue testing machine, comprising a fatigue testing bench (1), characterized in that: A vibration machine (2) is fixedly mounted at the center of the lower end of the fatigue test bench (1); support legs (3) are fixedly mounted at the four corners of the lower end of the fatigue test bench (1); test barrels (4) are symmetrically mounted at the upper end of the fatigue test bench (1); the test barrels (4) are symmetrically arranged in pairs; barrel covers (6) are movably mounted at the upper ends of the test barrels (4) via lifting assemblies (5); a test chamber (7) is formed between the test barrels (4) and the barrel covers (6); a fixing plate (8) is fixedly mounted at the center of the lower end of the barrel cover (6); a clamping claw (10) is movably mounted at the lower end of the fixing plate (8) via a driving assembly (9); the clamping claw (10) comprises a clamping body (1001) and a clamping body (1002); the clamping body (1002) is fixedly mounted at the end of the clamping body (1001).

2. A titanium alloy stress corrosion fatigue testing machine according to claim 1, characterized in that: The lifting assembly (5) comprises a cylinder (501), a lifting seat (502) and a connecting rod (503); the cylinder (501) is fixedly mounted at a middle position of an upper end of the fatigue test bench (1); the lifting seat (502) and a telescopic end of the cylinder (501) are fixedly connected; the lifting seat (502) is arranged at a middle position of the barrel cover (6); and the barrel cover (6) and the lifting seat (502) are fixedly connected via a connecting rod (503).

3. A titanium alloy stress corrosion fatigue testing machine according to claim 2, characterized in that: The driving assembly (9) comprises a driving motor (901), a driving cavity (902), a connecting shaft (903), a first bevel gear (904), a slide groove (905), a slider (906), a threaded rod (907) and a second bevel gear (908); the driving motor (901) is fixedly mounted on the upper end of the barrel cover (6); the connecting shaft (903) is fixedly mounted on the output end of the driving motor (901); the driving cavity (902) is opened at the center of the fixing plate (8); the lower end of the connecting shaft (903) extends into the driving cavity (902) and is fixedly mounted therein. The first bevel gear (904) is installed, the slide groove (905) is circumferentially distributed outside the driving cavity (902), the threaded rod (907) is movably installed in the slide groove (905), the slider (906) is threadedly connected to the threaded rod (907), the lower end of the slider (906) is fixedly connected to the upper end of the clamping body (1001), one end of the threaded rod (907) extends into the driving cavity (902) and is fixedly installed with the second bevel gear (908), and the second bevel gear (908) is meshed with the first bevel gear (904).

4. A titanium alloy stress corrosion fatigue testing machine according to claim 3, characterized in that: A clamping block (11) is symmetrically fixedly mounted on the lower end of the test barrel (4), and a clamping slot (12) is symmetrically opened on the upper end of the fatigue test bench (1), and the clamping block (11) is movably mounted in the corresponding clamping slot (12).

5. The titanium alloy stress corrosion fatigue testing machine according to claim 4, characterized in that: A sealing gasket (13) is fixedly mounted on the upper end of the test barrel (4).

6. The titanium alloy stress corrosion fatigue testing machine according to claim 5, characterized in that: The clamping body (1001) is hollow.

Images