Young modulus experimental instrument for metal wire

Abstract

The utility model relates to a Young modulus experimental instrument for a metal wire, which comprises a base, a bracket, a steel wire rope upper chuck, a steel wire rope lower chuck, a tension part, a tension sensor, a displacement connecting part, an optical lever placing platform, a three-foot tip seat, a laser emitting part, a vernier caliper support frame and a vernier caliper, the laser emitting part is installed on the three-foot tip seat, the measuring block on the displacement connecting part penetrates through the optical lever placing platform and is connected with the optical lever placing platform in a sliding mode, and a laser beam of the laser emitting part can vertically and downwards directly irradiate a vernier of the vernier caliper. According to the Young modulus experiment instrument for the metal wire, the displacement variation of a laser projection point of the laser emitting part is read through the vernier caliper, the measurement precision is high when the Young modulus experiment instrument is used, a telescope and a reflecting mirror are not used, only the three-foot tip seat and the vernier caliper need to be adjusted, the workload of adjustment preparation before an experiment is reduced, and the experiment efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of Young's modulus measurement, and more specifically, to a Young's modulus testing instrument for metal wire. Background Technology

[0002] Young's modulus is a parameter that measures the ability of a material to deform under stress, and it is an important physical quantity used to describe a material's resistance to elastic deformation. In Young's modulus measurement experiments, a Young's modulus testing apparatus can be used to measure the Young's modulus of different materials through the stress-strain relationship.

[0003] The current Young's modulus experimental apparatus uses an optical lever, a scale, and a telescope in conjunction with the optical lever amplification method to measure the elongation of a metal wire under force. When using the optical lever amplification method to measure the elongation of the wire, coarse adjustment is required first. This includes adjusting the telescope to be visually level and at the same height as the optical lever, and adjusting the adjusting mirror until the image of the illumination scale projected onto the optical lever mirror can be seen from above the telescope. Fine adjustment is then required, including adjusting the telescope eyepiece to clearly see the crosshairs and adjusting the eyepiece wheel until the image of the ruler is clearly visible without parallax. As can be seen from the above telescope and mirror adjustment steps, leveling the telescope is difficult, the reflecting mirror needs to be adjusted in conjunction with the telescope to observe the scale graduations, and adjusting the telescope and reflecting mirror requires excessive time, affecting experimental efficiency. Furthermore, when using the scale for reading, the low precision of the scale can easily lead to large reading errors, thus affecting measurement accuracy. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing metal wire elastic modulus measuring instruments, such as the difficulty in adjusting the telescope and reflector, the long usage time, and the low reading accuracy when using a ruler. This invention provides a metal wire Young's modulus measuring instrument that is simple to operate and has high measurement accuracy.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A metal wire Young's modulus testing instrument is provided, including a base, a bracket, an upper wire rope clamp, a lower wire rope clamp, a tension part, a tension sensor, a displacement connection part, an optical lever placement platform, a tripod base, a laser emitting part, a vernier caliper support frame, and a vernier caliper.

[0007] The bracket and the vernier caliper support frame are both mounted on the base. The upper clamp of the wire rope is fixedly mounted on the top of the bracket. The lower clamp of the wire rope, the tension sensor and the tension part are connected in sequence. The tension part is connected to the bracket.

[0008] The optical lever placement platform is mounted on the bracket, the laser emitting part is mounted on the tripod seat, the displacement connecting part is fixedly connected to the lower clamp of the steel wire rope, the measuring block on the displacement connecting part passes through the optical lever placement platform and is slidably connected to the optical lever placement platform, one leg of the tripod seat is located on the measuring block, and the other two legs are located on the optical lever placement platform;

[0009] The vernier caliper is fixedly mounted on the vernier caliper support frame, and the laser beam from the laser emitting unit can be vertically shone directly onto the vernier scale of the vernier caliper. The optical lever placement platform is slidably connected to the bracket, meaning the optical lever placement platform can slide up and down on the bracket.

[0010] Before using the Young's modulus testing apparatus for metal wire of this utility model, the apparatus must be adjusted. During pre-use adjustment, first clamp one end of the metal wire to be tested using the upper clamp of the wire rope, and then clamp the other end of the wire using the lower clamp of the wire rope, thus fixing the wire on the apparatus. After the wire is fixed, adjust the tension unit so that it pulls the wire through the tension sensor and the lower clamp of the wire rope until the wire is straight. Once the wire is straight, adjust the tension sensor to zero. After the tension unit is adjusted, the position of the lower clamp of the wire rope remains unchanged, i.e., the position of the displacement connection unit remains unchanged. At this point, adjust the position of the optical lever placement platform on the support so that the upper surface of the optical lever placement platform is flush with the upper surface of the measuring block in the displacement connection unit. At this point, the three legs of the tripod base are on the same plane. Then, turn on the laser emitter and adjust the position of the vernier caliper so that the laser beam emitted by the laser emitter is aligned with the zero mark on the vernier. Measure the distance between the laser emitter and the vernier, thus completing the pre-use adjustment of the experimental instrument. Next, apply tension to the metal wire through the tension unit and observe the magnitude of the applied tension using the tension sensor. After applying tension, the metal wire elongates, causing the lower clamp of the wire rope and the tension sensor to move downwards. The downward movement of the lower clamp causes the displacement connector to move downwards, which in turn causes the support leg on the tripod resting on the measuring block to move downwards, thus tilting the tripod. This tilting causes the laser emitter to tilt, changing the position of the laser beam projected onto the vernier caliper. Move the vernier caliper and reread the position of the laser beam projection point, then calculate the displacement change of the laser projection point. After obtaining the magnitude of the tension, the distance between the laser emitter and the vernier, and the displacement change of the laser projection point, calculate the Young's modulus of the metal wire using relevant formulas.

[0011] This invention provides a metal wire Young's modulus testing apparatus that uses vernier calipers to read the change in displacement of the laser projection point of the laser emitter. This results in high measurement accuracy during use. Furthermore, it eliminates the need for a telescope and reflector, requiring only adjustment of the tripod base and vernier calipers, reducing pre-experiment preparation work, shortening the adjustment time of the optical lever assembly, and improving experimental efficiency. It also eliminates the use of weights, instead using a tension unit to apply tension to the metal wire, with the force sensor reading the magnitude of the tension, thus avoiding experimental errors caused by weight corrosion. In addition, the tension unit and vernier calipers in this design are both mounted on the base, resulting in a more compact structure and saving space.

[0012] Furthermore, the bracket includes a first support rod, a second support rod, a first crossbeam, and a second crossbeam. The two ends of the first crossbeam are fixedly connected to the tops of the first support rod and the second support rod, respectively. The bottoms of the first support rod and the second support rod are both fixedly connected to the base. The two ends of the second crossbeam are fixedly connected to the first support rod and the second support rod, respectively.

[0013] The wire rope clamp is fixedly installed on the first crossbeam, the tension part is installed on the second crossbeam, and the optical lever placement platform is connected to the first support rod and the second support rod, with the optical lever placement platform located between the first crossbeam and the second crossbeam.

[0014] The support frame includes support rods and crossbeams, making it easier to disassemble and store the experimental instrument when not in use. In addition to the fixed connection between the second crossbeam and the support rods, the second crossbeam is also equipped with locking bolts that can pass through the second crossbeam and be inserted into the support rods. The locking bolts further enhance the connection strength between the second crossbeam and the two support rods, preventing the second crossbeam from moving under tension.

[0015] Furthermore, the tensioning component includes a tension screw and a tension nut. The tension nut is rotatably connected to the second crossbeam. One end of the tension screw is fixedly connected to the bottom of the tension sensor, and the other end passes through the second crossbeam and is slidably connected to it. The tension screw is threadedly connected to the tension nut. When the tension needs to be changed, the tension nut is rotated, causing the tension screw threadedly connected to the nut to move upward or downward. The movement of the tension screw drives the tension sensor and the lower clamp of the wire rope to move, thereby changing the tension of the metal wire.

[0016] Furthermore, the wire rope clamp is located at the top of the first crossbeam, which has a first through hole through which a wire can pass. The wire rope clamp includes a first clamping body and a second clamping body. The first clamping body is fixedly connected to the first crossbeam, and the second clamping body has a locking bolt that passes through the second clamping body and can be threadedly connected to the first clamping body. The wire is placed between the first and second clamping bodies through the first through hole, and then the locking bolt on the second clamping body is tightened to clamp and fix the wire between the first and second clamping bodies.

[0017] Furthermore, the lower clamp of the wire rope includes a third clamping body, a fourth clamping body, and a U-shaped clamping block. The second crossbeam has a second through hole through which the third and fourth clamping bodies can pass. The third and fourth clamping bodies are detachably connected and are both located within the U-shaped groove of the U-shaped clamping block. A locking bolt is provided on the side wall of the U-shaped clamping block, passing through the side wall of the U-shaped clamping block and the third and fourth clamping bodies. The third and fourth clamping bodies are connected by bolts. After the metal wire is placed between the third and fourth clamping bodies, the locking bolts are used to lock the third and fourth clamping bodies, thus completing the clamping and fixing of the metal wire between the third and fourth clamping bodies.

[0018] Furthermore, the displacement connecting part is L-shaped. One end of the displacement connecting part is fixedly connected to the third clamp or the fourth clamp, and the other end is connected to a measuring block. The top surface of the measuring block can coincide with the top surface of the optical lever placement platform. The L-shape of the displacement connecting part allows one end to be fixedly connected to the third clamp or the fourth clamp, while the other end can extend into the optical lever placement platform, thereby achieving the effect that the top surface of the measuring block coincides with the top surface of the optical lever placement platform.

[0019] Furthermore, the vernier caliper has a first graduation line flush with the zero mark, and the laser beam from the laser emitting unit can be directly projected onto this first graduation line. When the laser beam emitted by the laser emitting unit is projected onto the first graduation line, it indicates that the direction of the laser beam is perpendicular to the plane of the vernier caliper, thus avoiding the situation where the laser beam is projected at an angle, which would affect the accuracy of the experiment.

[0020] Furthermore, the base is provided with a sliding groove, along which the vernier caliper support can slide. The sliding groove has a T-shaped cross-section, and a positioning bolt passes through the bottom of the vernier caliper support. The nut of the positioning bolt is located at the bottom of the T-shaped sliding groove, allowing the positioning bolt to slide within the groove, thus enabling the vernier caliper support to slide within the groove. When it is necessary to fix the vernier caliper support, tightening the positioning bolt will fix the vernier caliper support to the base. The vernier caliper support can slide on the base. When adjusting the position of the vernier caliper, aligning the laser beam projection point of the laser emitter with the zero mark of the vernier caliper makes it easier to read the displacement change of the laser beam projection point.

[0021] Furthermore, it also includes fixing bolts that can pass through the three sets of pointed seats and be fixedly connected to the laser generator. Both the optical lever placement platform and the three-legged pointed seats are provided with clearance slots to allow the laser beam emitted by the laser emitting unit to pass through. The fixing bolts can be threaded to the end of the laser emitting unit. When the laser emitting unit is fixed to the three-legged pointed seats, the fixing bolts secure the laser emitting unit to the three-legged pointed seats. While the laser emitting unit is fixed to the three-legged pointed seats, the fixing bolts can also be used to rotate the laser emitting unit, allowing the laser beam emitted by the laser emitting unit to be directed perpendicularly towards the vernier caliper. Simultaneously, the clearance slots prevent the three-legged pointed seats and the optical lever placement platform from blocking the laser beam emitted by the laser emitting unit.

[0022] Furthermore, the system also includes sensor anti-rotation plates, which are fixedly mounted on the second crossbeam. Each anti-rotation plate has a positioning groove for accommodating the tension sensor, which is located within and slidably connected to the groove. Two anti-rotation plates are present, each mounted at one end of the second crossbeam, with the tension sensor secured in the positioning grooves on both plates. The anti-rotation plates prevent the sensor from rotating during movement, thus avoiding any impact on the accuracy of the sensor readings.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] This invention provides a metal wire Young's modulus testing apparatus that uses vernier calipers to read the change in displacement of the laser projection point of the laser emitter. This results in high measurement accuracy during use. Furthermore, it eliminates the need for a telescope and reflector, requiring only adjustment of the tripod and vernier calipers, reducing pre-experiment preparation work and improving experimental efficiency. It also eliminates the use of weights, instead applying tension to the metal wire using a tension sensor, which reads the tension magnitude, avoiding experimental errors caused by weight corrosion. In addition, the tension unit and vernier calipers in this design are both mounted on the base, resulting in a more compact structure and saving space. Attached Figure Description

[0025] Figure 1 A schematic diagram of a metal wire Young's modulus testing apparatus;

[0026] Figure 2 This is a schematic diagram of the top structure of a support for a metal wire Young's modulus testing apparatus.

[0027] Figure 3 This is a partial structural diagram of the support frame for a metal wire Young's modulus testing instrument.

[0028] Figure 4 This is a schematic diagram of the vernier caliper support frame and vernier caliper of a metal wire Young's modulus testing instrument.

[0029] In the attached diagram: 1. Base; 2. Bracket; 3. Upper clamp of wire rope; 4. Lower clamp of wire rope; 5. Tension section; 6. Tension sensor; 7. Displacement connection section; 8. Optical lever placement platform; 9. Tripod base; 10. Laser emitting section; 11. Vernier caliper support frame; 12. Vernier caliper; 13. Sensor anti-rotation plate; 14. Fixing bolt; 15. Positioning bolt; 16. Metal wire; 101. Slide groove; 201. First support rod; 202. Second support rod; 203. First crossbeam; 204. Second crossbeam; 301. First clamp; 302. Second clamp; 303. Locking bolt; 401. Third clamp; 402. Fourth clamp; 403. U-shaped clamp; 501. Tension screw; 502. Tension nut; 701. Measuring block; 121. Vernier; 122. First scale line. Detailed Implementation

[0030] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0031] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0032] Example 1

[0033] This embodiment is a first embodiment of a Young's modulus testing apparatus for metal wires, such as... Figures 1-4 As shown, it includes a base 1, a bracket 2, an upper wire rope clamp 3, a lower wire rope clamp 4, a tension part 5, a tension sensor 6, a displacement connection part 7, an optical lever placement platform 8, a tripod base 9, a laser emitting part 10, a vernier caliper support frame 11, and a vernier caliper 12.

[0034] The bracket 2 and the vernier caliper support frame 11 are both installed on the base 1. The upper wire rope clamp 3 is fixedly installed on the top of the bracket 2. The lower wire rope clamp 4, the tension sensor 6 and the tension part 5 are connected in sequence. The tension part 5 is connected to the bracket 2.

[0035] The optical lever placement platform 8 is mounted on the bracket 2, the laser emitting part 10 is mounted on the tripod seat 9, the displacement connecting part 7 is fixedly connected to the lower clamp of the steel wire rope 4, the measuring block 701 on the displacement connecting part 7 passes through the optical lever placement platform 8 and is slidably connected to the optical lever placement platform 8, one leg of the tripod seat 9 is located on the measuring block 701, and the other two legs are located on the optical lever placement platform 8.

[0036] The vernier caliper 12 is fixedly mounted on the vernier caliper support frame 11, and the laser beam from the laser emitting unit 10 can be vertically shone directly onto the vernier 121 of the vernier caliper 12. The optical lever placement platform 8 is slidably connected to the bracket 2, that is, the optical lever placement platform 8 can slide up and down on the bracket 2.

[0037] The working principle or process of this embodiment is as follows:

[0038] Before using the Young's modulus testing apparatus for metal wire in this embodiment, the apparatus must be adjusted. During pre-use adjustment, one end of the metal wire 16 to be tested is clamped using the upper clamp 3 of the wire rope, and the other end is clamped using the lower clamp 4 of the wire rope, thus fixing the metal wire 16 on the apparatus. After the metal wire 16 is fixed on the apparatus, the tension section 5 is adjusted so that it pulls the metal wire 16 through the tension sensor 6 and the lower clamp 4 until the metal wire 16 is straight. After the metal wire 16 is straight, the tension sensor 6 is adjusted until its reading is zeroed. After the tension section 5 is adjusted, the position of the lower clamp 4 of the wire rope remains unchanged, meaning the position of the displacement connection section 7 also remains unchanged. At this point, the position of the optical lever placement platform 8 on the support 2 is adjusted so that the upper surface of the optical lever placement platform 8 is flush with the upper surface of the measuring block 701 in the displacement connection section 7. At this point, the three legs of the tripod pedestal 9 are on the same plane. Then turn on the laser emitting unit 10 and adjust the position of the vernier 121 in the vernier caliper 12 so that the laser beam emitted by the laser emitting unit 10 is aligned with the zero mark on the vernier 121. Measure the distance between the laser emitting unit 10 and the vernier 121. This completes the pre-use adjustment of the experimental instrument. Then, tension is applied to the metal wire 16 through the tension section 5, and the magnitude of the applied tension is observed using the tension sensor 6. After the tension is applied, the metal wire 16 elongates. The elongation of the metal wire 16 causes the lower clamp 4 of the wire rope and the tension sensor 6 to move downward. After the lower clamp of the metal wire 16 moves downward, it causes the displacement connecting section 7 to move downward. The downward movement of the displacement connecting section 7 causes the support leg on the tripod 9, which rests on the measuring block 701, to move downward, thereby causing the tripod 9 to tilt. The tilting of the tripod 9 causes the laser emitting section 10 to tilt. After the laser emitting section 10 tilts, the position of the laser beam projected on the vernier caliper 12 changes. The vernier caliper 121 is moved, and the position of the laser beam projection point is read again. Then, the displacement change of the laser projection point is calculated. After obtaining the magnitude of the tension, the distance between the laser emitting section 10 and the vernier caliper 121, and the displacement change of the laser projection point, the Young's modulus of the metal wire 16 is calculated according to the relevant formula.

[0039] The beneficial effects of this embodiment are as follows:

[0040] The Young's modulus testing apparatus for metal wire in this embodiment reads the change in displacement of the laser projection point of the laser emitting unit 10 using vernier calipers 12. This results in high measurement accuracy during use. Furthermore, it eliminates the need for a telescope and reflector, requiring only adjustment of the tripod base 9 and vernier calipers 12, reducing pre-experiment preparation work and improving experimental efficiency. Simultaneously, it eliminates the use of weights, instead using the tension unit 5 to apply tension to the metal wire 16, with the tension sensor 6 reading the magnitude of the tension, thus avoiding experimental errors caused by weight corrosion. In addition, the tension unit 5 and vernier calipers 12 in this design are both mounted on the base 1, resulting in a more compact structure and saving space.

[0041] Example 2

[0042] This embodiment is a second embodiment of a Young's modulus testing apparatus for metal wires, such as... Figure 2 and Figure 3 As shown, this embodiment further defines the structure of the bracket 2, the tension part 5, and the wire rope clamp based on embodiment one.

[0043] Specifically, the support 2 includes a first support rod 201, a second support rod 202, a first crossbeam 203, and a second crossbeam 204. Both ends of the first crossbeam 203 are fixedly connected to the tops of the first support rod 201 and the second support rod 202, respectively. The bottoms of both the first support rod 201 and the second support rod 202 are fixedly connected to the base 1. Both ends of the second crossbeam 204 are fixedly connected to the first support rod 201 and the second support rod 202, respectively. A wire rope clamp 3 is fixedly installed on the first crossbeam 203, a tensioning part 5 is installed on the second crossbeam 204, and a lever placement platform 8 is connected to the first support rod 201 and the second support rod 202, with the lever placement platform 8 located between the first crossbeam 203 and the second crossbeam 204.

[0044] Specifically, the tension section 5 includes a tension screw 501 and a tension nut 502. The tension nut 502 is rotatably connected to the second crossbeam 204. One end of the tension screw 501 is fixedly connected to the bottom of the tension sensor 6, and the other end passes through the second crossbeam 204 and is slidably connected to it. The tension screw 501 and the tension nut 502 are threadedly connected. When the tension needs to be changed, the tension nut 502 is rotated, causing the tension screw 501 threadedly connected to the tension nut 502 to move upward or downward. The movement of the tension screw 501 drives the tension sensor 6 and the lower clamp 4 of the wire rope to move, thereby changing the tension of the metal wire 16.

[0045] Specifically, the wire rope clamp 3 is located at the top of the first crossbeam 203. The first crossbeam 203 has a first through hole through which the metal wire 16 can pass. The wire rope clamp 3 includes a first clamp body 301 and a second clamp body 302. The first clamp body 301 is fixedly connected to the first crossbeam 203. The second clamp body 302 is provided with a locking bolt 303. The locking bolt 303 passes through the second clamp body 302 and can be threadedly connected to the first clamp body 301.

[0046] Specifically, the lower clamp 4 of the wire rope includes a third clamp 401, a fourth clamp 402 and a U-shaped clamp 403. The second crossbeam 204 is provided with a second through hole through which the third clamp 401 and the fourth clamp 402 can pass. The third clamp 401 and the fourth clamp 402 are detachably connected. The third clamp 401 and the fourth clamp 402 are both located in the U-shaped groove of the U-shaped clamp 403. The side wall of the U-shaped clamp 403 is provided with locking bolts that pass through the side wall of the U-shaped clamp 403, the third clamp 401 and the fourth clamp 402.

[0047] The working principle and beneficial effects of this embodiment are as follows:

[0048] The bracket 2 includes a support rod and a crossbeam, making it easier to disassemble and store the experimental instrument when not in use. The metal wire 16 is placed between the first clamp 301 and the second clamp 302 through the first through hole. Then, the locking bolt 303 on the second clamp 302 is tightened to clamp and fix the metal wire 16 between the first clamp 301 and the second clamp 302. The third clamp 401 and the fourth clamp 402 are connected by bolts. After placing the metal wire 16 between the third clamp 401 and the fourth clamp 402, the locking bolts are used to lock the third clamp 401 and the fourth clamp 402, completing the clamping and fixing of the metal wire 16 between the third clamp 401 and the fourth clamp 402.

[0049] Example 3

[0050] This embodiment is the third embodiment of a Young's modulus testing apparatus for metal wires, such as... Figures 1-4 As shown, this embodiment further defines other structural features of the experimental apparatus based on Embodiment 2.

[0051] Specifically, it also includes a sensor anti-rotation plate 13, which is fixedly installed on the second crossbeam 204. The sensor anti-rotation plate 13 has a positioning groove for accommodating the tension sensor 6, which is located in the positioning groove and slidably connected to it. There are two sensor anti-rotation plates 13, which are respectively installed at both ends of the second crossbeam 204, and the tension sensor 6 is engaged in the positioning grooves on the two sensor anti-rotation plates 13.

[0052] Specifically, the vernier 121 has a first scale line 122 that is flush with the zero mark of the vernier 121, and the laser beam of the laser emitting unit 10 can be directly shone on the first scale line 122.

[0053] Specifically, the base 1 is provided with a slide groove 101, and the vernier caliper support frame 11 can slide along the slide groove 101. The slide groove 101 has a T-shaped cross section, and a positioning bolt 15 is provided at the bottom of the vernier caliper support frame 11. The nut of the positioning bolt 15 is located at the bottom of the T-shaped slide groove 101, and the positioning bolt 15 can slide in the slide groove 101, thereby completing the sliding of the vernier caliper support frame 11 in the slide groove 101. When it is necessary to fix the vernier caliper support frame 11, tighten the positioning bolt 15 to fix the vernier caliper support frame 11 on the base 1.

[0054] Specifically, the displacement connection part 7 is L-shaped. One end of the displacement connection part 7 is fixedly connected to the third clamp 401 or the fourth clamp 402, and the other end is connected to the measuring block 701. The top surface of the measuring block 701 can coincide with the top surface of the optical lever placement platform 8.

[0055] Specifically, it also includes a fixing bolt 14, which can pass through the tripod seat 9 and be fixedly connected to the laser emitting part 10. Both the optical lever placement platform 8 and the tripod seat 9 are provided with clearance slots through which the laser beam emitted by the laser emitting part 10 can pass.

[0056] The working principle and beneficial effects of this embodiment are as follows:

[0057] The sensor anti-rotation plate 13 prevents the sensor from rotating during movement, thus avoiding affecting the accuracy of the sensor reading. When the laser beam emitted by the laser emitter 10 is projected onto the first scale line 122, it indicates that the direction of the laser beam is perpendicular to the plane where the vernier caliper 12 is located, avoiding the situation where the laser beam is tilted and affects the accuracy of the experiment. The vernier caliper support frame 11 can slide on the base 1. When adjusting the position of the vernier caliper 12, the laser beam projection point of the laser emitter 10 is aligned with the zero scale of the vernier caliper 12, making it easier to read the displacement change of the laser beam projection point. The displacement connection part 7 is L-shaped, so that one end of the displacement connection part 7 can be fixedly connected to the third clamp 401 or the fourth clamp 402, and the other end can extend into the optical lever placement platform 8, so that the top surface of the measuring block 701 coincides with the top surface of the optical lever placement platform 8. The fixing bolt 14 can be threaded to the end of the laser emitting part 10. When the laser emitting part 10 is fixed on the tripod base 9, the fixing bolt 14 completes the fixation of the laser emitting part 10 on the tripod base 9. When the laser emitting part 10 is fixed on the tripod base 9, the fixing bolt 14 can also be used to rotate the laser emitting part 10, so that the beam emitted by the laser emitting part 10 can be directed perpendicularly to the vernier caliper 12. At the same time, the setting of the clearance groove can prevent the tripod base 9 and the optical lever placement platform 8 from blocking the laser beam emitted by the laser emitting part 10.

[0058] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0059] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A metal wire Young's modulus testing apparatus, characterized in that, It includes a base (1), a bracket (2), an upper wire rope clamp (3), a lower wire rope clamp (4), a tension part (5), a tension sensor (6), a displacement connection part (7), an optical lever placement platform (8), a tripod base (9), a laser emitting part (10), a vernier caliper support frame (11), and a vernier caliper (12); The bracket (2) and the vernier caliper support frame (11) are both installed on the base (1). The upper clamp (3) of the wire rope is fixedly installed on the top of the bracket (2). The lower clamp (4), the tension sensor (6) and the tension part (5) are connected in sequence. The tension part (5) is connected to the bracket (2). The optical lever placement platform (8) is mounted on the bracket (2), the laser emitting part (10) is mounted on the tripod seat (9), the displacement connecting part (7) is fixedly connected to the lower clamp of the wire rope (4), the measuring block (701) on the displacement connecting part (7) passes through the optical lever placement platform (8) and is slidably connected to the optical lever placement platform (8), one leg of the tripod seat (9) is located on the measuring block (701), and the other two legs are located on the optical lever placement platform (8); The vernier caliper (12) is fixedly installed on the vernier caliper support frame (11), and the laser beam of the laser emitting part (10) can be vertically downward and directly projected onto the vernier (121) of the vernier caliper (12).

2. The Young's modulus testing apparatus for metal wire according to claim 1, characterized in that, The bracket (2) includes a first support rod (201), a second support rod (202), a first crossbeam (203), and a second crossbeam (204). The two ends of the first crossbeam (203) are fixedly connected to the tops of the first support rod (201) and the second support rod (202), respectively. The bottoms of the first support rod (201) and the second support rod (202) are both fixedly connected to the base (1). The two ends of the second crossbeam (204) are fixedly connected to the first support rod (201) and the second support rod (202), respectively. The wire rope clamp (3) is fixedly installed on the first crossbeam (203), the tension part (5) is installed on the second crossbeam (204), the optical lever placement platform (8) is connected to the first support rod (201) and the second support rod (202), and the optical lever placement platform (8) is located between the first crossbeam (203) and the second crossbeam (204).

3. The Young's modulus testing apparatus for metal wire according to claim 2, characterized in that, The tension part (5) includes a tension screw (501) and a tension nut (502). The tension nut (502) is rotatably connected to the second crossbeam (204). One end of the tension screw (501) is fixedly connected to the bottom of the tension sensor (6), and the other end passes through the second crossbeam (204) and is slidably connected to the second crossbeam (204). The tension screw (501) is threadedly connected to the tension nut (502).

4. The Young's modulus testing apparatus for metal wire according to claim 2, characterized in that, The wire rope clamp (3) is located at the top of the first crossbeam (203). The first crossbeam (203) has a first through hole through which the metal wire can pass. The wire rope clamp (3) includes a first clamp body (301) and a second clamp body (302). The first clamp body (301) is fixedly connected to the first crossbeam (203). The second clamp body (302) is provided with a locking bolt (303). The locking bolt (303) passes through the second clamp body (302) and can be threadedly connected to the first clamp body (301).

5. The Young's modulus testing apparatus for metal wire according to claim 2, characterized in that, The lower clamp (4) of the wire rope includes a third clamp (401), a fourth clamp (402) and a U-shaped clamp (403). The second crossbeam (204) is provided with a second through hole through which the third clamp (401) and the fourth clamp (402) can pass. The third clamp (401) and the fourth clamp (402) are detachably connected. The third clamp (401) and the fourth clamp (402) are both located in the U-shaped groove of the U-shaped clamp (403). The side wall of the U-shaped clamp (403) is provided with locking bolts that pass through the side wall of the U-shaped clamp (403), the third clamp (401) and the fourth clamp (402).

6. The Young's modulus testing apparatus for metal wire according to claim 5, characterized in that, The displacement connecting part (7) is L-shaped. One end of the displacement connecting part (7) is fixedly connected to the third clamp (401) or the fourth clamp (402). The measuring block (701) is located at the other end of the displacement connecting part (7). The top surface of the measuring block (701) can coincide with the top surface of the optical lever placement platform (8).

7. The Young's modulus testing apparatus for metal wire according to claim 1, characterized in that, The vernier (121) is provided with a first scale line (122) that is flush with the zero scale of the vernier (121), and the laser beam of the laser emitting part (10) can be directly shone on the first scale line (122).

8. The Young's modulus testing apparatus for metal wire according to claim 7, characterized in that, The base (1) is provided with a slide groove (101), and the vernier caliper support frame (11) can slide along the slide groove (101).

9. The Young's modulus testing apparatus for metal wire according to claim 7, characterized in that, It also includes a fixing bolt (14), which can pass through the tripod seat (9) and be fixedly connected to the laser emitting part (10). Both the optical lever placement platform (8) and the tripod seat (9) are provided with clearance slots through which the laser beam emitted by the laser emitting part (10) can pass.

10. The Young's modulus testing apparatus for metal wire according to claim 2, characterized in that, It also includes a sensor anti-rotation plate (13), which is fixedly installed on the second crossbeam (204). The sensor anti-rotation plate (13) is provided with a positioning groove that can accommodate the tension sensor (6). The tension sensor (6) is located in the positioning groove and is slidably connected to the positioning groove.

Images