Testing device based on iron-based shape memory alloy mechanical property research experiment

By designing a mechanical property research and testing device for iron-based shape memory alloys, the problem of lack of monitoring and diagnosis in the prior art is solved, and the accurate testing and safety improvement of iron-based shape memory alloys is achieved.

CN222994166UActive Publication Date: 2025-06-17CHINA CONSTR SEVENTH ENG DIVISION CORP LTD
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Patent Information

Application Number
CN202421274645.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-05
Publication Date
2025-06-17
Estimated Expiration
2034-06-05

AI Technical Summary

Technical Problem

The lack of monitoring and diagnosis of iron-based shape memory alloys in the prior art leads to the inability to collect reliable maintenance and control information in a timely manner, increasing the risk of safety accidents.

Method used

A test and test device for research and testing based on the mechanical properties of iron-based shape memory alloys is designed, including a flip barrel, a tensile mechanism, a driving mechanism and a computer control system. Through these devices, the iron-based shape memory alloy can be stretched, bending and heating tests can be performed to record its deformation.

Benefits of technology

Through the use of this device, the accuracy of the test results can be improved, data collection of iron-based shape memory alloys under different deformation states can be achieved, safety performance can be enhanced, and material breakage and personnel damage during the test can be avoided.

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Abstract

The utility model provides an iron-based shape memory alloy-based mechanical property research experiment testing device, which comprises a flip bucket, an iron-based shape memory alloy extending along the left and right direction is arranged in the flip bucket, the flip bucket is used for placing the iron-based shape memory alloy, the left end and the right end of the iron-based shape memory alloy are connected with leads, and the leads are connected with the flip bucket. The wire is connected with a programmable power supply, and the programmable power supply is electrically connected with a computer. Stretching mechanisms are respectively arranged at the left end and the right end of the flip barrel; under the action of the stretching mechanism, the limiting ring can be driven to move, so that the iron-based shape memory alloy is stretched, the iron-based shape memory alloy deforms in a stretching state, and then the iron-based shape memory alloy is heated through the power supply, so that the tested iron-based shape memory alloy is recovered to the original shape under the heating condition; and the computer is used for recording, so that the purpose of improving the accuracy of a test result is achieved.
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Description

Technical Field

[0001] The utility model relates to the technical field of metal alloy performance testing, specifically a test device for studying the mechanical properties of iron-based shape memory alloys. Background Technique

[0002] Iron shape memory alloy is a special metal alloy with a unique shape memory effect. That is, within a certain temperature range, when it is deformed by an external force, it can restore its original shape when the external force is removed and heated to a certain temperature. This characteristic makes iron shape memory alloy widely used in many fields, such as medical devices, aerospace equipment, and construction engineering.

[0003] In the prior art, iron-based shape memory alloy materials are used in some fields as materials, but currently, there is a lack of monitoring and diagnosis of iron-based shape memory alloys, making it impossible to collect reliable maintenance control information in a timely manner, resulting in the occurrence of safety accidents. Content of the Utility Model

[0004] The purpose of the utility model is to provide a test device for studying the mechanical properties of iron-based shape memory alloys, aiming to solve the problem in the prior art that there is a lack of monitoring and diagnosis of iron-based shape memory alloys, making it impossible to collect reliable maintenance control information in a timely manner, resulting in the occurrence of safety accidents.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: The test device for studying the mechanical properties of iron-based shape memory alloys includes a flip bucket. An iron-based shape memory alloy extending in the left-right direction is arranged in the flip bucket. The flip bucket is used for placing the iron-based shape memory alloy. Both the left and right ends of the iron-based shape memory alloy are connected with wires, and the wires are connected with a programmable power supply, and the programmable power supply is electrically connected with a computer;

[0006] Tensile mechanisms are respectively arranged at the left and right ends of the flip bucket. The iron-based shape memory alloy is clamped with the tensile mechanisms, and the tensile mechanisms are used for stretching the iron-based shape memory alloy;

[0007] Two spaced first telescopic devices are arranged in the flip bucket. The end face of the movable rod of the first telescopic device is fixedly provided with a top block, and the top block corresponds to the iron-based shape memory alloy, and the top block is used for pushing the iron-based shape memory alloy to one side.

[0008] A driving mechanism is arranged in the flip bucket. The driving mechanism is connected with the first telescopic device, and the driving mechanism is used for adjusting the position of the first telescopic device.

[0009] Preferably, the flip cover bucket comprises an upper flip cover and a lower flip cover, the front sides of the upper flip cover and the lower flip cover are rotatably connected to each other, the upper flip cover and the lower flip cover are semicircular cylindrical structures, and the upper flip cover and the lower flip cover are provided with arc grooves with opposite openings on opposite sides;

[0010] The left and right ends of the upper flip cover and the lower flip cover are fixed with a clamping half ring, the interior of the clamping half ring is communicated with the arc groove, and the side of the clamping half ring away from the upper flip cover and the lower flip cover is respectively connected to the stretching mechanism.

[0011] Preferably, each of the stretching mechanisms comprises a second telescopic device and a limiting ring, the second telescopic devices are two and extend in the left-right direction, and the limiting ring is a semicircular ring structure;

[0012] The fixed rod end surfaces of the two second telescopic devices are both fixedly connected to the clamping half ring, and the movable rod end surfaces of the second telescopic devices are both fixedly connected to the limiting ring;

[0013] The limiting ring, the snap-fitting half ring and the upper flip cover correspond one to one on the left and right to form an upper semicircular groove structure that is transparent on the left and right. The limiting ring, the snap-fitting half ring and the lower flip cover correspond one to one on the left and right to form a lower semicircular groove structure that is transparent on the left and right. When the upper flip cover and the lower flip cover are flipped and fitted together, the upper and lower adjacent limiting rings and snap-fitting half rings also fit together to form a circular hole structure that is transparent on the left and right.

[0014] Preferably, the iron-based shape memory alloy comprises a detection rod and a connecting block, the connecting blocks are two and fixedly connected to the left and right ends of the detection rod, and the detection rod is extended in the left and right directions;

[0015] The detection rod is placed in the lower semicircular groove structure, and the two connecting blocks are respectively against the side of the limit ring away from the second telescopic device. The second telescopic device is used to drive the limit ring to move. When the limit ring moves, it is used to drive the connecting block to stretch the detection rod.

[0016] Preferably, the driving mechanism comprises a front-rear driving mechanism and a left-right driving mechanism, and the front-rear driving mechanism and the left-right driving mechanism are two in number and are respectively distributed in the upper flip cover and the lower flip cover;

[0017] The upper flip cover and the lower flip cover are respectively provided with a movable plate extending in the left-right direction, and the movable plate is transmission-connected with the front and rear drive mechanisms, and the front and rear drive mechanisms are used to drive the movable plate to reciprocate along the inner side wall of the flip cover barrel;

[0018] The movable plate is provided with a movable block, and the movable block is transmission-connected with the left and right driving mechanisms, and the left and right driving mechanisms are used for driving the movable block to move left and right along the movable plate.

[0019] Preferably, a cavity is provided inside the flip-top bucket;

[0020] The front and rear drive mechanism includes a first drive device and a chain;

[0021] The first drive device is fixedly arranged on the inner side wall of the cavity. A plurality of gears are rotatably arranged on the inner side wall of the cavity at intervals along the extending direction of the flip bucket. The chain is wound around the gears and meshes with the gears. One of the gears is fixedly connected to the output shaft of the first drive device;

[0022] Two first chutes spaced left and right are respectively formed on the upper flip cover and the lower flip cover. The first chutes communicate with the cavity. Two first sliders spaced left and right are fixedly arranged at the bottom of the moving plate. The first sliders are slidably arranged in the first chutes, and the first sliders are rotatably connected to the chain.

[0023] Preferably, a moving groove extending in the left - right direction and having an upward - opening is formed on the moving plate;

[0024] The left - right drive mechanism includes a second drive device and a lead screw. The lead screw extends in the left - right direction. The second drive device is fixedly arranged on the inner side wall of the moving groove. The output shaft of the second drive device is fixedly connected to the lead screw. The other end of the lead screw is rotatably connected to the moving groove;

[0025] One end of the first telescopic device away from the top block is fixedly connected to the moving block. The moving block is slidably arranged in the moving groove. The moving block is sleeved on the lead screw and is threadedly connected to the lead screw. The rotation of the lead screw drives the moving block to move along the moving groove.

[0026] Preferably, bolt holes are formed on the limiting ring at intervals in a circumferential array with the limiting ring as the center. Bolts are inserted into the bolt holes and are threadedly connected to the bolt holes. The bolts and the bolt holes cooperate to clamp the detection rod.

[0027] The beneficial effects are as follows: 1. Under the action of the stretching mechanism, the limiting ring can be driven to move, thereby stretching the iron - based shape memory alloy, causing the iron - based shape memory alloy to deform in the stretched state. Then, the iron - based shape memory alloy is heated by a power supply, and the situation where the tested iron - based shape memory alloy returns to its original state under heating is recorded by a computer, thus achieving the purpose of improving the accuracy of the test results.

[0028] 2. Through the setting of the drive mechanism, the position of the top block can be adjusted so as to support the iron - based shape memory alloy, causing the iron - based shape memory alloy to deform in the bent state. Then, the data of returning to the original state under heating is recorded by a computer to test the data of the iron - based shape memory alloy under different deformations, realizing the effect of diversified testing.

[0029] 3. When conducting tests, the upper flip cover and the lower flip cover can be fitted to each other, enabling the iron-based shape memory alloy to be tested inside the flip-top barrel. In this way, the safety performance is improved, and the situation where the iron-based shape memory alloy breaks and injures people during the test is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of the flip-top barrel in the specific embodiment of the present invention when it is opened;

[0031] Figure 2 is a schematic structural diagram of the flip-top barrel in the specific embodiment of the present invention when it is closed;

[0032] Figure 3 is a schematic structural diagram of the flip-top barrel in the specific embodiment of the present invention when the iron-based shape memory alloy is not placed inside;

[0033] Figure 4 is in the specific embodiment of the present invention Figure 3 magnified schematic structural diagram of part A;

[0034] Figure 5 is a schematic structural diagram of a partial cross-section of the lower flip cover in the specific embodiment of the present invention;

[0035] Figure 6 is a schematic structural diagram of a partial cross-section of the cavity in the specific embodiment of the present invention;

[0036] Figure 7 is in the specific embodiment of the present invention Figure 6 magnified schematic structural diagram of part B;

[0037] Figure 8 is in the specific embodiment of the present invention Figure 6 magnified schematic structural diagram of part C;

[0038] Figure 9 is a schematic structural diagram of a partial cross-section of the flip-top barrel in the specific embodiment of the present invention.

[0039] In the figures: 1, flip-top barrel; 101, upper flip cover; 102, lower flip cover; 2, iron-based shape memory alloy; 201, detection rod; 202, connecting block; 3, stretching mechanism; 301, second telescopic device; 302, limiting ring; 4, moving plate; 5, cavity; 6, front and rear driving mechanism; 601, first driving device; 602, chain; 7, moving groove; 8, moving block; 9, left and right driving mechanism; 901, second driving device; 902, lead screw; 10, first telescopic device; 11, top block; 12, clamping semi-ring; 13, arc groove; 14, gear; 15, first slider; 17, bolt hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The following further describes the specific embodiments of the present utility model in conjunction with the accompanying drawings.

[0041] As Figures 1-9 shown, based on the mechanical property research test device of iron-based shape memory alloy, during the test, a series of mechanical property tests such as stretching and bending can be performed on the iron-based shape memory alloy 2. Then, through heating activation, the recovery stress level of the iron-based shape memory alloy 2 is tested, improving the accuracy of the test results. Specifically, it includes a flip-top bucket 1. Inside the flip-top bucket 1, there is an iron-based shape memory alloy 2 extending in the left-right direction. The flip-top bucket 1 is used to place the iron-based shape memory alloy 2. Open the flip-top bucket 1 and place the iron-based shape memory alloy 2 on the lower flip 102. Both the left and right ends of the iron-based shape memory alloy 2 are connected with wires (clamps are fixedly provided at the other ends of the wires, and the clamps are clamped with the two ends of the iron-based shape memory alloy 2 so that the iron-based shape memory alloy 2 can be heated after being electrified). The wires are connected with a programmable power supply (the programmable power supply can adjust the input voltage to heat the iron-based shape memory alloy 2). The programmable power supply is electrically connected to a computer (the computer can display data to improve the test efficiency, and the computer can also control the programmable power supply to control the magnitude of the input voltage). Then, the iron-based shape memory alloy 2 can be stretched or bent by the stretching mechanism 3 or the driving mechanism to perform stretching or bending experiments on the iron-based shape memory alloy 2.

[0042] When testing, the upper flip 101 and the lower flip 102 can be mutually attached, so that the iron-based shape memory alloy 2 is tested inside the flip-top bucket 1. In this way, the safety performance is improved, and the situation that the iron-based shape memory alloy 2 breaks and injures people during the test is avoided. Specifically, the flip-top bucket 1 includes an upper flip 101 and a lower flip 102 (the materials of the upper flip 101 and the lower flip 102 are polycarbonate plates, which can not only see the internal test process but also prevent items from splashing out). The front sides of the upper flip 101 and the lower flip 102 are rotatably connected to each other. The upper flip 101 and the lower flip 102 can be flipped and mutually attached to form a cylindrical structure, and can also be opened to facilitate placing the iron-based shape memory alloy 2. The upper flip 101 and the lower flip 102 are semi-cylindrical tubular structures, and arc-shaped grooves 13 with opposite openings are provided on the opposite sides of the upper flip 101 and the lower flip 102.

[0043] Snap semi-rings 12 are fixedly provided at both the left and right ends of the upper flip 101 and the lower flip 102. The inside of the snap semi-rings 12 is in communication with the arc-shaped grooves 13. The snap semi-rings 12 can be used as supports for the iron-based shape memory alloy 2 to improve the stability of the iron-based shape memory alloy 2. The sides of the snap semi-rings 12 away from the upper flip 101 and the lower flip 102 are respectively connected to the stretching mechanism 3.

[0044] Under the action of the stretching mechanism 3, the limiting ring 302 can be driven to move, thereby stretching the iron-based shape memory alloy 2, causing the iron-based shape memory alloy 2 to deform in the stretched state. Then, the iron-based shape memory alloy 2 is heated by a power supply, so that the tested iron-based shape memory alloy 2 returns to its original state when heated, and the situation is recorded by a computer, thereby achieving the purpose of improving the accuracy of the test results. Specifically, stretching mechanisms 3 are respectively provided at the left and right ends of the flip-top bucket 1, and the iron-based shape memory alloy 2 is clamped with the stretching mechanism 3, and the stretching mechanism 3 is used to stretch the iron-based shape memory alloy 2.

[0045] Each stretching mechanism 3 includes a second telescopic device 301 (the second telescopic device 301 is a second telescopic rod) and a limiting ring 302. There are two second telescopic devices 301, and they are arranged to extend in the left-right direction. The limiting ring 302 is a semi-circular ring structure. When the upper flip cover 101 and the lower flip cover 102 are mutually attached, the two limiting rings 302 on the same side can be attached together, so as to clamp the iron-based shape memory alloy 2, so that the iron-based shape memory alloy 2 can be stretched.

[0046] The end faces of the fixed rods of the two second telescopic devices 301 are fixedly connected to the clamping semi-ring 12, and the end faces of the movable rods of the second telescopic devices 301 are fixedly connected to the limiting ring 302. Driving the second telescopic device 301 to start enables the end face of the movable rod of the second telescopic device 301 to drive the limiting ring 302 to move, so as to stretch the iron-based shape memory alloy 2.

[0047] The limiting ring 302, the clamping semi-ring 12 and the upper flip cover 101 correspond one by one from left to right, forming a semi-circular groove structure that is transparent from left to right. The limiting ring 302, the clamping semi-ring 12 and the lower flip cover 102 correspond one by one from left to right, forming a semi-circular groove structure that is transparent from left to right. When the upper flip cover 101 and the lower flip cover 102 are flipped and attached, the adjacent limiting rings 302 and clamping semi-rings 12 above and below also adhere to each other, forming a circular hole structure that is transparent from left to right.

[0048] The iron-based shape memory alloy 2 includes a detection rod 201 and connecting blocks 202. There are two connecting blocks 202, and they are fixedly connected to the left and right ends of the detection rod 201. The detection rod 201 extends in the left-right direction. The outer diameter of the connecting block 202 is larger than that of the limiting ring 302. Therefore, when the detection rod 201 is placed in the clamping semi-ring 12, the connecting block 202 can be clamped by the limiting ring 302. Then, the upper flip cover 101 and the lower flip cover 102 are flipped and attached, so that the detection rod 201 is clamped in the circular hole structure formed by the limiting ring 302.

[0049] The detection rod 201 is placed inside the lower semi-circular groove structure. The two connecting blocks 202 respectively abut against one side of the limiting ring 302 away from the second telescopic device 301. The second telescopic device 301 is used to drive the movement of the limiting ring 302. When the limiting ring 302 moves, it drives the connecting block 202 to stretch the detection rod 201. When the second telescopic device 301 moves, it drives the limiting ring 302 to move. When the limiting ring 302 moves, it drives the connecting block 202 to move, so as to stretch the detection rod 201.

[0050] After the iron-based shape memory alloy 2 is placed and the two limiting rings 302 are in contact with each other, the iron-based shape memory alloy 2 can be clamped. Then, insert the bolt into the bolt hole 17 to adjust the size of the clamped iron-based shape memory alloy 2, so that the clamping process of the iron-based shape memory alloy 2 can be more stable. Specifically, the limiting ring 302 is provided with bolt holes 17 arranged at intervals in a circumferential array with the limiting ring 302 as the center. Bolts are inserted into the bolt holes 17, and the bolts are threadedly connected to the bolt holes 17. The bolts and the bolt holes 17 cooperate with each other to clamp the detection rod 201. When the detection rod 201 is inside the limiting ring 302, the length of the bolt can be adjusted so that the bolt can directly be stuck on the outer side surface of the detection rod 201, thereby realizing the adjustment of the clamping size according to the thickness of the detection rod 201.

[0051] Through the setting of the driving mechanism, the position of the top block 11 can be adjusted so as to support the iron-based shape memory alloy 2, causing the iron-based shape memory alloy 2 to undergo a bending deformation. Then, under the condition of heating, the data restored to the original state is recorded by a computer to test the data of the iron-based shape memory alloy 2 under different deformations, achieving the effect of diversified testing. Specifically, two spaced first telescopic devices 10 (the first telescopic device 10 is a first telescopic rod) are provided inside the flip-top barrel 1. The end face of the movable rod of the first telescopic device 10 is fixedly provided with a top block 11. The top block 11 corresponds to the iron-based shape memory alloy 2. The top block 11 is used to support the iron-based shape memory alloy 2 to one side. Driving the first telescopic device 10 to start enables the end face of the movable rod of the first telescopic device 10 to drive the top block 11 to move. When the top block 11 moves, it can squeeze and bend the iron-based shape memory alloy 2.

[0052] A driving mechanism is provided inside the flip-top barrel 1. The driving mechanism is connected to the first telescopic device 10, and the driving mechanism is used to adjust the position of the first telescopic device 10.

[0053] The driving mechanism includes a front-back driving mechanism 6 and a left-right driving mechanism 9. There are two front-back driving mechanisms 6 and left-right driving mechanisms 9, and they are respectively distributed inside the upper flip cover 101 and the lower flip cover 102. The front-back driving mechanism 6 can adjust the front-back direction of the moving plate 4.

[0054] Inside the upper flip cover 101 and the lower flip cover 102, there are respectively moving plates 4 extending in the left - right direction. The moving plates 4 are in transmission connection with the front - rear driving mechanism 6, and the front - rear driving mechanism 6 is used to drive the moving plates 4 to reciprocate along the inner wall of the flip - cover barrel 1.

[0055] On the moving plate 4, there is a moving block 8. The moving block 8 is in transmission connection with the left - right driving mechanism 9. The left - right driving mechanism 9 is used to drive the moving block 8 to move left - right along the moving plate 4. The left - right driving mechanism 9 can adjust the left - right position of the first telescopic device 10, so as to be able to adjust the position of the top block 11 according to requirements and improve the test results.

[0056] Inside the flip - cover barrel 1, there is a cavity 5.

[0057] The front - rear driving mechanism 6 includes a first driving device 601 (the first driving device 601 is a first driving self - locking motor) and a chain 602.

[0058] The first driving device 601 is fixedly arranged on the inner side wall of the cavity 5. On the inner side wall of the cavity 5, there are a plurality of gears 14 rotatably arranged at intervals along the extending direction of the flip - cover barrel 1. The chain 602 is wound around the gears 14 and meshes with the gears 14. One of the gears 14 is fixedly connected to the output shaft of the first driving device 601. Driving the first driving device 601 to start, the output shaft of the first driving device 601 drives one of the gears 14 to rotate. When the gear 14 rotates, it can drive the chain 602 to rotate, and thus the chain 602 drives the moving plate 4 to move.

[0059] On the upper flip cover 101 and the lower flip cover 102, there are respectively two first chutes spaced left - right. The first chutes are in communication with the cavity 5. At the bottom of the moving plate 4, there are two first sliders 15 spaced left - right. The first sliders 15 are slidably arranged in the first chutes. The first sliders 15 are rotatably connected to the chain 602. During the movement of the moving plate 4, it can drive the first sliders 15 to move along the first chutes, so as to be able to adjust different orientations to extrude and bend the iron - based shape - memory alloy 2.

[0060] On the moving plate 4, there is a moving groove 7 extending in the left - right direction and with an upward - opening.

[0061] The left - right driving mechanism 9 includes a second driving device 901 (the second driving device 901 is a second driving self - locking motor) and a lead screw 902. The lead screw 902 extends in the left - right direction. The second driving device 901 is fixedly arranged on the inner side wall of the moving groove 7. The output shaft of the second driving device 901 is fixedly connected to the lead screw 902. The other end of the lead screw 902 is rotatably connected to the moving groove 7. Driving the second driving device 901 to start, the output shaft of the second driving device 901 can drive the lead screw 902 to rotate.

[0062] One end of the first telescopic device 10 away from the top block 11 is fixedly connected to the moving block 8. The moving block 8 is slidably arranged in the moving groove 7. The moving block 8 is sleeved on the lead screw 902 and is threadedly connected to the lead screw 902. The rotation of the lead screw 902 is used to drive the moving block 8 to move along the moving groove 7. When the lead screw 902 rotates, it can drive the moving block 8 to move along the moving groove 7, thereby driving the first telescopic device 10 to move, so as to adjust the top support of different parts on the iron-based shape memory alloy 2.

[0063] Working principle: When in use, open the flip bucket 1, place the iron-based shape memory alloy 2 on the lower flip cover 102, and then fit the upper flip cover 101 and the lower flip cover 102 together, so that the iron-based shape memory alloy 2 is tested in the flip bucket 1. When the upper flip cover 101 and the lower flip cover 102 are fitted together, the two limiting rings 302 on the same side can be fitted together to clamp the iron-based shape memory alloy 2. When the detection rod 201 is within the limiting ring 302, the length of the bolt can be adjusted so that the bolt can directly clamp on the outer side surface of the detection rod 201, thereby realizing the adjustment of the clamping size according to the thickness of the detection rod 201, so as to be able to stretch the iron-based shape memory alloy 2.

[0064] Drive the second telescopic device 301 to start, so that the end face of the movable rod of the second telescopic device 301 can drive the limiting ring 302 to move, so as to stretch the iron-based shape memory alloy 2. Under the action of the stretching mechanism 3, it can drive the limiting ring 302 to move, thereby stretching the iron-based shape memory alloy 2, so that the iron-based shape memory alloy 2 undergoes deformation in the stretched state. Then, heat the iron-based shape memory alloy 2 through the power supply, so as to test the situation that the iron-based shape memory alloy 2 returns to its original state when heated, and record it through the computer, thereby achieving the purpose of improving the accuracy of the test results.

[0065] Start the first driving device 601, so that the output shaft of the first driving device 601 drives one of the gears 14 to rotate. When the gear 14 rotates, it can drive the chain 602 to rotate, thereby driving the moving plate 4 to move. During the movement of the moving plate 4, it can drive the first slider 15 to move along the first chute, so as to be able to adjust different orientations to squeeze and bend the iron-based shape memory alloy 2. Start the second driving device 901, so that the output shaft of the second driving device 901 can drive the lead screw 902 to rotate. When the lead screw 902 rotates, it can drive the moving block 8 to move along the moving groove 7, thereby driving the first telescopic device 10 to move, so as to adjust different parts to support the iron-based shape memory alloy 2. Through the setting of the driving mechanism, the position of the top block 11 can be adjusted, so as to be able to support the iron-based shape memory alloy 2, causing the iron-based shape memory alloy 2 to undergo a bending state deformation. After that, under the condition of heating, the data restored to the original state is recorded by the computer, so as to test the data of the iron-based shape memory alloy 2 under different deformations, achieving the effect of diversified testing.

[0066] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A test device for studying the mechanical properties of iron-based shape memory alloys, characterized in that: The invention comprises a flip-top barrel (1), wherein an iron-based shape memory alloy (2) extending in the left-right direction is arranged in the flip-top barrel (1), and the flip-top barrel (1) is used to place the iron-based shape memory alloy (2), and the left and right ends of the iron-based shape memory alloy (2) are both connected to wires, and the wires are connected to a programmable power supply, and the programmable power supply is electrically connected to a computer; The left and right ends of the flip-top bucket (1) are respectively provided with stretching mechanisms (3), the iron-based shape memory alloy (2) is clamped with the stretching mechanisms (3), and the stretching mechanisms (3) are used to stretch the iron-based shape memory alloy (2); The flip-top bucket (1) is provided with two first telescopic devices (10) spaced apart from each other, a top block (11) is fixedly provided on the end surface of the movable rod of the first telescopic device (10), the top block (11) and the iron-based shape memory alloy (2) correspond to each other, and the top block (11) is used to support the iron-based shape memory alloy (2) to one side; A driving mechanism is provided in the flip-top bucket (1), the driving mechanism being connected to the first telescopic device (10), and the driving mechanism being used to adjust the position of the first telescopic device (10).

2. The test device for studying and testing the mechanical properties of iron-based shape memory alloys according to claim 1 is characterized in that: The flip cover bucket (1) comprises an upper flip cover (101) and a lower flip cover (102), the front sides of the upper flip cover (101) and the lower flip cover (102) are rotatably connected to each other, the upper flip cover (101) and the lower flip cover (102) are semicircular cylindrical structures, and the upper flip cover (101) and the lower flip cover (102) are both provided with arc grooves (13) with openings facing each other on opposite sides. A clamping half ring (12) is fixedly provided at both left and right ends of the upper flip cover (101) and the lower flip cover (102); the interior of the clamping half ring (12) is interconnected with the arc groove (13); and the side of the clamping half ring (12) away from the upper flip cover (101) and the lower flip cover (102) is respectively interconnected with the stretching mechanism (3).

3. The test device for studying and testing the mechanical properties of iron-based shape memory alloys according to claim 2 is characterized in that: Each of the stretching mechanisms (3) comprises a second telescopic device (301) and a limiting ring (302), wherein the second telescopic devices (301) are two and extend in the left-right direction, and the limiting ring (302) is a semicircular ring structure; The fixed rod end surfaces of the two second telescopic devices (301) are both fixedly connected to the clamping half ring (12), and the movable rod end surfaces of the second telescopic devices (301) are both fixedly connected to the limiting ring (302); The limiting ring (302), the snap-fitting half ring (12) and the upper flip cover (101) correspond to each other on the left and right, forming an upper semicircular groove structure that is transparent on the left and right. The limiting ring (302), the snap-fitting half ring (12) and the lower flip cover (102) correspond to each other on the left and right, forming a lower semicircular groove structure that is transparent on the left and right. When the upper flip cover (101) and the lower flip cover (102) are turned over and fitted together, the limiting rings (302) and snap-fitting half rings (12) adjacent to each other on the upper and lower sides also fit together to form a circular hole structure that is transparent on the left and right.

4. The test device for studying and testing the mechanical properties of iron-based shape memory alloys according to claim 3 is characterized in that: The iron-based shape memory alloy (2) comprises a detection rod (201) and a connection block (202), wherein the connection blocks (202) are two and fixedly connected to the left and right ends of the detection rod (201), and the detection rod (201) is extended in the left-right direction; The detection rod (201) is placed in the lower semicircular groove structure, and the two connecting blocks (202) respectively abut against a side of the limiting ring (302) away from the second telescopic device (301). The second telescopic device (301) is used to drive the limiting ring (302) to move. When the limiting ring (302) moves, it drives the connecting block (202) to stretch the detection rod (201).

5. The test device for studying and testing the mechanical properties of iron-based shape memory alloys according to claim 2 is characterized in that: The driving mechanism comprises a front-rear driving mechanism (6) and a left-right driving mechanism (9), wherein the front-rear driving mechanism (6) and the left-right driving mechanism (9) are two in number and are respectively distributed in the upper flip cover (101) and the lower flip cover (102); A movable plate (4) extending in the left-right direction is respectively provided in the upper flip cover (101) and the lower flip cover (102), and the movable plate (4) is in transmission connection with a front-rear driving mechanism (6), and the front-rear driving mechanism (6) is used to drive the movable plate (4) to reciprocate along the inner wall of the flip cover barrel (1); A moving block (8) is provided on the moving plate (4), and the moving block (8) is in transmission connection with left and right driving mechanisms (9). The left and right driving mechanisms (9) are used to drive the moving block (8) to move left and right along the moving plate (4).

6. The test device for studying and testing the mechanical properties of iron-based shape memory alloys according to claim 5 is characterized in that: The flip-top bucket (1) is provided with a cavity (5) inside; The front and rear drive mechanism (6) comprises a first drive device (601) and a chain (602); The first driving device (601) is fixedly mounted on the inner wall of the cavity (5); a plurality of gears (14) are rotatably mounted on the inner wall of the cavity (5) and are arranged at intervals along the extension direction of the flip-top bucket (1); the chain (602) is wound around the gears (14) and meshes with the gears (14); one of the gears (14) is fixedly connected to the output shaft of the first driving device (601); The upper flip cover (101) and the lower flip cover (102) are respectively provided with two first sliding grooves spaced apart from each other, the first sliding grooves are communicated with the cavity (5), and two first sliding blocks (15) spaced apart from each other are fixedly provided at the bottom of the movable plate (4), the first sliding blocks (15) are slidably arranged in the first sliding grooves, and the first sliding blocks (15) are rotatably connected to the chain (602).

7. The test device for studying and testing the mechanical properties of iron-based shape memory alloys according to claim 5 is characterized in that: The movable plate (4) is provided with a movable groove (7) extending in the left-right direction and opening upward; The left-right driving mechanism (9) comprises a second driving device (901) and a lead screw (902), wherein the lead screw (902) is arranged to extend in the left-right direction, the second driving device (901) is fixedly arranged on the inner side wall of the movable groove (7), the output shaft of the second driving device (901) is fixedly connected to the lead screw (902), and the other end of the lead screw (902) is rotatably connected to the movable groove (7); One end of the first telescopic device (10) away from the top block (11) is fixedly connected to the moving block (8); the moving block (8) is slidably arranged in the moving groove (7); the moving block (8) is sleeved on the lead screw (902) and is threadedly connected to the lead screw (902); the lead screw (902) rotates to drive the moving block (8) to move along the moving groove (7).

8. The test device for studying and testing the mechanical properties of iron-based shape memory alloys according to claim 4 is characterized in that: The limiting ring (302) is provided with bolt holes (17) arranged in an array at intervals around the limiting ring (302) as the center, and bolts are inserted into the bolt holes (17), and the bolts are threadedly connected to the bolt holes (17), and the bolts and the bolt holes (17) cooperate with each other to clamp the detection rod (201).