Stretching device for detecting strength of nickel-titanium memory alloy wire

Abstract

The utility model relates to the technical field of nickel-titanium memory alloy wire stretching, in particular to a stretching device for detecting the strength of a nickel-titanium memory alloy wire, which mainly comprises a detector body, a support frame is fixedly mounted on the top surface of the detector body, and a moving component is movably mounted on the inner wall of the support frame. A display assembly is arranged on one side of the detection machine body, the fixing mechanism is arranged in the supporting frame, the fixing mechanism comprises two fixing blocks located in the supporting frame, connecting plates are fixedly installed on the two fixing blocks respectively, two pairs of clamping blocks are arranged on one sides of the connecting plates, and handles are arranged on one sides of the fixing blocks; the fixing mechanism is used for clamping and fixing a nickel-titanium memory alloy wire, the locking mechanism is arranged on one side of the fixing block, the locking mechanism comprises a clamping block located on one side of the handle, an outer gear ring is fixedly installed on the outer wall of the handle, and the locking mechanism is used for locking the handle. The stretching device for detecting the strength of the nickel-titanium memory alloy wire is provided.

Description

Technical Field

[0001] This utility model relates to the field of nickel-titanium shape memory alloy wire stretching technology, specifically a stretching device for testing the strength of nickel-titanium shape memory alloy wire. Background Technology

[0002] Nickel-titanium shape memory alloy wire is a special alloy material composed of two metallic elements, nickel and titanium. It has unique shape memory effect, super elasticity, good biocompatibility, high strength and durability, and corrosion resistance. After being deformed by external force at a certain temperature, it can still maintain the deformed shape after the external force is removed, but it can automatically return to its original shape at higher temperatures. It is mainly used in the automotive, aerospace, and medical fields.

[0003] After the production of nickel-titanium shape memory alloy wire, it is necessary to conduct a tensile test on the strength of the nickel-titanium shape memory alloy wire. The two ends of the nickel-titanium shape memory alloy wire are fixed and the strength of the nickel-titanium shape memory alloy wire is tested by stretching. When fixing the nickel-titanium shape memory alloy wire, due to the limitation of the device length, the nickel-titanium shape memory alloy wire can only be cut by external equipment and then the two ends are clamped for tensile testing. This series of additional operation steps undoubtedly makes the whole testing process more cumbersome and reduces the testing efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a tensile device for testing the strength of nickel-titanium shape memory alloy wire, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A tensile testing device for testing the strength of nickel-titanium shape memory alloy wire includes: a testing machine body, a support frame fixedly mounted on the top surface of the testing machine body, a movable component movably mounted on the inner wall of the support frame, and a display component disposed on one side of the testing machine body. The device also includes:

[0007] The fixing mechanism is located inside the support frame. The fixing mechanism includes two fixing blocks located inside the support frame. A connecting plate is fixedly installed on each of the two fixing blocks. Two pairs of clamping blocks are provided on one side of the connecting plate, and a handle is provided on one side of the fixing block. The fixing mechanism is used to clamp and fix the nickel-titanium shape memory alloy wire.

[0008] The locking mechanism is located on one side of the fixed block. The locking mechanism includes a latch block located on one side of the handle. An external toothed ring is fixedly installed on the outer wall of the handle. The locking mechanism is used to lock the handle.

[0009] Preferably, a detector is fixedly installed on the bottom surface of the moving component, and the bottom surface of the detector and the top surface of the detector body are respectively fixedly connected to two fixed blocks on opposite sides away from each other. A fixed plate is fixedly installed on the other end of the connecting plate.

[0010] Preferably, the side of the fixing plate has a groove, the inner wall of the groove is slidably connected to the side of a pair of clamping blocks, and the side of the pair of clamping blocks has a through groove.

[0011] Preferably, the side of the fixing plate has two fixing grooves, and the inner walls of the two fixing grooves are respectively fixed with limit blocks by bolts. The sides of the two limit blocks are slidably connected to the sides of a pair of clamping blocks.

[0012] Preferably, a pair of clamping blocks have a connecting groove on their sides, an adjusting plate is movably installed inside the connecting groove, and a screw is fixedly installed on the other end of the adjusting plate. The screw thread passes through the inner wall of the groove and is fixedly connected to one end of the handle.

[0013] Preferably, a pair of inclined grooves are installed through the inside of the groove, and a pair of limiting posts are fixedly installed on the sides of a pair of clamping blocks, with the outer walls of the pair of limiting posts slidably connected to the inner walls of the pair of inclined grooves.

[0014] Preferably, two sliding rods are slidably installed on the side of one side of the connecting plate, with one end of each sliding rod fixedly connected to the side of the locking block, and the locking block engaging with the external gear ring.

[0015] Preferably, a pull plate is fixedly installed at the other end of the two slide rods, and elastic elements are slidably installed on the outer walls of the two slide rods respectively. The two ends of the two elastic elements are fixedly connected to the side of the card block and the side of the connecting plate respectively.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention uses a screw to move an adjusting plate, which in turn moves a clamping block within the inner wall of the tank. The clamping block holds and fixes the nickel-titanium shape memory alloy wire. Through a through-slot on the clamping block, when the nickel-titanium shape memory alloy wire being tested is too long, one end of the longer wire can pass through the slot and be placed on the testing machine body while the clamping block is holding it. This eliminates the need for external equipment to cut the wire, making the tensile testing process simpler and more convenient, thus improving testing efficiency.

[0018] By using the elastic locking block and the external gear ring, the locking block engages with the external gear ring, thus fixing the external gear ring and preventing it from rotating automatically. After adjusting the position of the screw and clamping block by the handle and clamping and fixing the nickel-titanium memory alloy wire, it is ensured that the handle does not rotate slightly, thereby ensuring the stability of the clamping block in fixing the nickel-titanium memory alloy wire and ensuring the quality of stretching.

[0019] With the fixed groove and limit block set, the limit block limits the movement of the clamping block, making the movement of the clamping block more stable. At the same time, the limit block is connected to the fixed groove by bolts. After the limit block is removed, the clamping block can be easily taken out. When the clamping block wears and slips after long-term use, it is easy to replace the clamping block, improving the replacement efficiency. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a three-dimensional structural diagram of the screw section of this utility model;

[0023] Figure 4 This is an exploded three-dimensional view of the clamping block of this utility model.

[0024] In the picture:

[0025] 1. Testing machine body; 101. Support frame; 102. Moving component; 103. Display component;

[0026] 2. Fixing mechanism; 201. Detector; 202. Fixing block; 203. Connecting plate; 204. Fixing plate; 205. Groove; 206. Clamping block; 207. Through groove; 208. Fixing groove; 209. Limiting block; 210. Inclined groove; 211. Limiting post; 212. Connecting groove; 213. Adjusting plate; 214. Screw; 215. Handle;

[0027] 3. Locking mechanism; 301. External gear ring; 302. Locking block; 303. Slide rod; 304. Pull plate; 305. Elastic element. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] like Figures 1-4As shown, this application provides a tensile device for testing the strength of nickel-titanium shape memory alloy wire, comprising: a testing machine body 1, a support frame 101 fixedly mounted on the top surface of the testing machine body 1, a movable component 102 movably mounted on the inner wall of the support frame 101, and a display component 103 provided on one side of the testing machine body 1. It also includes:

[0031] The fixing mechanism 2 is located inside the support frame 101. The fixing mechanism 2 includes two fixing blocks 202 located inside the support frame 101. A connecting plate 203 is fixedly installed on each of the two fixing blocks 202. Two pairs of clamping blocks 206 are provided on one side of the connecting plate 203. A handle 215 is provided on one side of the fixing block 202. The fixing mechanism 2 is used to clamp and fix the nickel-titanium shape memory alloy wire.

[0032] Specifically, such as Figures 1-4 As shown, a detector 201 is fixedly installed on the bottom surface of the moving component 102. The bottom surface of the detector 201 and the top surface of the detector body 1 are respectively fixedly connected to two fixed blocks 202 on opposite sides away from each other. A fixed plate 204 is fixedly installed on the other end of the connecting plate 203.

[0033] In this embodiment: the moving component 102 is used to move the detector 201 and the fixed block 202 above, and the detector 201 detects the tensile strength.

[0034] Specifically, such as Figures 1-4 As shown, a groove 205 is provided on the side of the fixing plate 204, and the inner wall of the groove 205 is slidably connected to the side of a pair of clamping blocks 206. A through groove 207 is provided on the side of the pair of clamping blocks 206.

[0035] In this embodiment: the clamping block 206 is limited by the groove 205, making the movement of the clamping block 206 more stable. When the length of the nickel-titanium shape memory alloy wire is long, the clamping block 206 fixes the nickel-titanium shape memory alloy wire, and the excess part passes through the through groove 207, which can be detected without cutting.

[0036] Specifically, such as Figures 1-4 As shown, two fixing grooves 208 are provided on the side of the fixing plate 204. Limiting blocks 209 are fixedly installed on the inner walls of the two fixing grooves 208 by bolts. The sides of the two limiting blocks 209 are slidably connected to the sides of a pair of clamping blocks 206.

[0037] In this embodiment, the clamping block 206 is limited by the setting limit block 209.

[0038] Specifically, such as Figures 1-4As shown, a pair of clamping blocks 206 have a connecting groove 212 on their sides. An adjusting plate 213 is movably installed inside the connecting groove 212. A screw 214 is fixedly installed on the other end face of the adjusting plate 213. The screw 214 is threaded through the inner wall of the groove 205 and fixedly connected to one end face of the handle 215.

[0039] In this embodiment: the screw 214 drives the adjusting plate 213 to rotate and move, and the adjusting plate 213 rotates on the inner wall of the connecting groove 212 and drives the clamping block 206 to move.

[0040] Specifically, such as Figures 1-4 As shown, a pair of inclined grooves 210 are installed through the inside of the groove 205, and a pair of limiting posts 211 are fixedly installed on the side of a pair of clamping blocks 206. The outer walls of the pair of limiting posts 211 are slidably connected to the inner walls of the pair of inclined grooves 210.

[0041] In this embodiment: the inclined groove 210 limits the limiting post 211, thereby limiting the clamping block 206 and making the clamping block 206 move more stably.

[0042] The locking mechanism 3 is located on one side of the fixed block 202. The locking mechanism 3 includes a latching block 302 located on one side of the handle 215. An external gear ring 301 is fixedly installed on the outer wall of the handle 215. The locking mechanism 3 is used to lock the handle 215.

[0043] Specifically, such as Figures 1-4 As shown, two sliding rods 303 are slidably installed on the side of the connecting plate 203. One end of the two sliding rods 303 is fixedly connected to the side of the locking block 302, and the locking block 302 is engaged with the external gear ring 301.

[0044] In this embodiment: the sliding rod 303 limits the locking block 302, and the locking block 302 fixes the outer gear ring 301, making it difficult for the outer gear ring 301 and the handle 215 to rotate.

[0045] Specifically, such as Figures 1-4 As shown, pull plates 304 are fixedly installed at the other end of the two slide rods 303, and elastic elements 305 are slidably installed on the outer walls of the two slide rods 303 respectively. The two ends of the elastic elements 305 are fixedly connected to the side of the locking block 302 and the side of the connecting plate 203 respectively.

[0046] In this embodiment: the elastic element 305 applies elastic force to the locking block 302, and the pull plate 304 drives the slide rod 303 and the locking block 302 to move, thereby releasing the lock on the outer gear ring 301 and the handle 215, so that the handle 215 can be adjusted.

[0047] The specific solution is as follows: Place one end of the nickel-titanium shape memory alloy wire between a pair of clamping blocks 206 on the upper side, pull the pull plate 304 to move the slide rod 303 and the locking block 302, and the locking block 302 will be unlocked from the external gear ring 301. Turn the handle 215 to rotate and move the screw 214 and the adjusting plate 213. The adjusting plate 213 rotates on the inner wall of the connecting groove 212 and moves the pair of clamping blocks 206 downward to clamp and fix the nickel-titanium shape memory alloy wire. Loosen the pull plate 304, and the elastic element 305 pushes the locking block. 302 locks the outer gear ring 301. The lower end of the nickel-titanium memory alloy wire is placed between a pair of clamping blocks 206 below. The longer portion of the nickel-titanium memory alloy wire passes through the through slot 207 and is placed on the testing machine body 1. By rotating the handle 215, the lower end of the nickel-titanium memory alloy wire is fixed by the clamping blocks 206 and locked to the outer gear ring 301 by the locking block 302. The moving component 102 drives the clamping blocks 206 above to pull the nickel-titanium memory alloy wire to test the nickel-titanium memory alloy wire.

[0048] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this invention as described above, which are not provided in the details for the sake of brevity.

[0049] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tensile device for testing the strength of nickel-titanium shape memory alloy wire, comprising: The testing machine body (1) has a support frame (101) fixedly installed on its top surface, a movable component (102) movably installed on the inner wall of the support frame (101), and a display component (103) provided on one side of the testing machine body (1). The machine is characterized by further comprising: A fixing mechanism (2) is provided inside the support frame (101). The fixing mechanism (2) includes two fixing blocks (202) located inside the support frame (101). A connecting plate (203) is fixedly installed on each of the two fixing blocks (202). Two pairs of clamping blocks (206) are provided on one side of the connecting plate (203). A handle (215) is provided on one side of the fixing block (202). The fixing mechanism (2) is used to clamp and fix the nickel-titanium shape memory alloy wire. The locking mechanism (3) is located on one side of the fixed block (202). The locking mechanism (3) includes a locking block (302) located on one side of the handle (215). An external gear ring (301) is fixedly installed on the outer wall of the handle (215). The locking mechanism (3) is used to lock the handle (215).

2. The tensile device for testing the strength of nickel-titanium shape memory alloy wire according to claim 1, characterized in that, The detector (201) is fixedly installed on the bottom surface of the moving component (102). The bottom surface of the detector (201) and the top surface of the detector body (1) are respectively fixedly connected to two fixed blocks (202) on opposite sides away from each other. A fixed plate (204) is fixedly installed on the other end of the connecting plate (203).

3. The tensile device for testing the strength of nickel-titanium shape memory alloy wire according to claim 2, characterized in that, The fixing plate (204) has a groove (205) on its side, and the inner wall of the groove (205) is slidably connected to the side of a pair of clamping blocks (206). The side of the pair of clamping blocks (206) has a through groove (207).

4. The tensile device for testing the strength of nickel-titanium shape memory alloy wire according to claim 3, characterized in that, The fixing plate (204) has two fixing grooves (208) on its side. The inner walls of the two fixing grooves (208) are respectively fixed with limiting blocks (209) by bolts. The sides of the two limiting blocks (209) are slidably connected to the sides of a pair of clamping blocks (206).

5. A tensile device for detecting the strength of nickel-titanium shape memory alloy wire according to claim 4, characterized in that, A connecting groove (212) is provided on the side of a pair of clamping blocks (206). An adjusting plate (213) is movably installed inside the connecting groove (212). A screw (214) is fixedly installed on the other end face of the adjusting plate (213). The screw (214) is threaded through the inner wall of the groove (205) and fixedly connected to one end face of the handle (215).

6. A tensile device for testing the strength of nickel-titanium shape memory alloy wire according to claim 5, characterized in that, A pair of inclined grooves (210) are installed through the inside of the groove (205), and a pair of limiting posts (211) are fixedly installed on the side of the pair of clamping blocks (206). The outer wall of the pair of limiting posts (211) is slidably connected to the inner wall of the pair of inclined grooves (210).

7. A tensile device for testing the strength of nickel-titanium shape memory alloy wire according to claim 1, characterized in that, Two sliding rods (303) are slidably installed through the side of the connecting plate (203) on one side. One end of the two sliding rods (303) is fixedly connected to the side of the locking block (302), and the locking block (302) is engaged with the external gear ring (301).

8. A tensile device for testing the strength of nickel-titanium shape memory alloy wire according to claim 7, characterized in that, Pull plates (304) are fixedly installed at the other end of the two slide rods (303), and elastic elements (305) are slidably installed on the outer walls of the two slide rods (303). The two ends of the two elastic elements (305) are fixedly connected to the side of the locking block (302) and the side of the connecting plate (203) respectively.

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