A testing device for mechanical properties of composite materials

Abstract

This invention provides a testing device for the mechanical properties of composite materials, primarily relating to the field of performance testing equipment. The device includes a vernier caliper body. The top of the vernier caliper body is provided with an inner diameter measuring jaw. One side of the bottom of the vernier caliper body is provided with a fixed jaw and a movable jaw. A connecting block is installed on one side of the fixed jaw. A placement groove is formed on the connecting block. The front, back, and right sides of the placement groove are all open to the outside. Two connecting plates, distributed front and back, are slidably disposed within the placement groove. A vertical lead screw is rotatably mounted within the placement groove via a bearing. The advantages of this invention are: its simple structure and ease of use; through the cooperation of the lead screw, nut, and support rod, the measuring jaws of the vernier caliper can be widened, thereby ensuring parallel clamping between the two measuring jaws when measuring rectangular samples, avoiding misalignment between the measuring jaws, and guaranteeing that the measured distance is the actual size of the sample.

Description

Technical Field

[0001] This invention relates primarily to the field of performance testing equipment, specifically a testing device for the mechanical properties of composite materials. Background Technology

[0002] In the field of composite material testing, mechanical property testing (tensile strength, non-proportional elongation strength, and elongation after fracture) is an important part of composite material performance testing. In existing mechanical property testing technologies, data measurement is a crucial step. When using a traditional measuring tool like a vernier caliper to measure the original gauge length, original width, and original thickness of a sample, the external measuring jaws of the vernier caliper are prone to displacement and shaking when measuring rectangular samples due to their narrow width, resulting in significant errors in the measurement data. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a testing device for the mechanical properties of composite materials. This invention has a simple structure and is easy to use. By cooperating with the lead screw, nut, and support rod, the measuring jaws of the vernier caliper can be widened, thereby ensuring that the two measuring jaws are clamped in parallel when measuring rectangular samples. This avoids offset between the measuring jaws, ensures that the measured distance is the actual size of the sample, and reduces measurement errors.

[0004] To achieve the above objectives, the present invention employs the following technical solution:

[0005] A testing device for the mechanical properties of composite materials includes a vernier caliper body. The top of the vernier caliper body is provided with an inner diameter measuring jaw. One side of the bottom of the vernier caliper body is provided with a fixed jaw and a movable jaw. A connecting block is installed on one side of the fixed jaw. A placement groove is formed on the connecting block. The front, back, and right sides of the placement groove are all open to the outside. Two connecting plates, distributed front and back, are slidably arranged in the placement groove. A vertical lead screw is rotatably installed in the placement groove via a bearing. The upper and lower ends of the lead screw have opposite threads. Nuts are installed at both ends of the lead screw. Each nut has a support rod hinged to both sides. One end of each support rod is hinged to a corresponding connecting plate. A first bevel gear is installed at the top of the lead screw. An adjusting bolt is installed on the other side of the fixed jaw. A second bevel gear is installed at one end of the adjusting bolt. The first bevel gear and the second bevel gear are meshed together.

[0006] Furthermore, L-shaped plates are installed on both the front and rear sides of one side of the movable claw.

[0007] Furthermore, each of the L-shaped plates is detachably connected to the movable claw via bolts.

[0008] Furthermore, strip grooves are provided on the inner walls of both the upper and lower sides of the placement groove, and strip blocks are installed on both the upper and lower sides of each connecting plate. Each strip block is inserted into the corresponding strip groove and can slide along the corresponding strip groove.

[0009] Furthermore, the working surface of each connecting plate is flush with the working surface of the fixing claw.

[0010] Furthermore, the working surface of each L-shaped plate is flush with the working surface of the movable claw.

[0011] Furthermore, the vernier caliper body is a digital display vernier caliper.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] This invention has a simple structure and is easy to use. By cooperating with the lead screw, nut and support rod, the measuring jaws of the vernier caliper can be widened, so that when measuring rectangular samples, the two measuring jaws can be clamped in parallel, avoiding the offset between the measuring jaws, ensuring that the measured distance is the actual size of the sample and reducing the measurement error. Attached Figure Description

[0014] Appendix Figure 1 This is a schematic diagram of the structure of the present invention;

[0015] Appendix Figure 2 yes Figure 1 A magnified view of a portion of the I;

[0016] Appendix Figure 3 yes Figure 1 An enlarged view of the A-direction view;

[0017] Appendix Figure 4 yes Figure 1 An enlarged view of the B-direction view;

[0018] The following are the labels in the attached diagram: 1. Vernier caliper body; 2. Inner diameter measuring jaw; 3. Fixed jaw; 4. Movable jaw; 5. Connecting block; 6. Placement groove; 7. Connecting plate; 8. Lead screw; 9. Nut; 10. Support rod; 11. First bevel gear; 12. Adjusting bolt; 13. Second bevel gear; 14. L-shaped plate; 15. Strip groove; 16. Strip block; 17. Bolt. Detailed Implementation

[0019] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.

[0020] like Figure 1-4 As shown, the present invention discloses a testing device for the mechanical properties of composite materials, comprising a vernier caliper body 1, an inner diameter measuring jaw 2 at the top of the vernier caliper body 1, a fixed jaw 3 and a movable jaw 4 on one side of the bottom of the vernier caliper body 1, a connecting block 5 installed on one side of the fixed jaw 3, a placement groove 6 formed on the connecting block 5, the front and rear sides and the right side of the placement groove 6 being open to the outside, two connecting plates 7 slidably arranged in the placement groove 6, and a vertical lead screw 8 rotatably mounted in the placement groove 6 via bearings, the lead screw 8 having opposite threads at its upper and lower ends, nuts 9 installed at both ends of the lead screw 8, support rods 10 hinged to both sides of each nut 9, one end of each support rod 10 hinged to a corresponding connecting plate 7, a first bevel gear 11 installed at the top of the lead screw 8, an adjusting bolt 12 installed on the other side of the fixed jaw 3, a second bevel gear 13 installed at one end of the adjusting bolt 12, and the first bevel gear 11 and the second bevel gear 13 meshing together.

[0021] Specifically, L-shaped plates 14 are installed on both the front and rear sides of one side of the movable claw 4. The L-shaped plates 14 increase the width of the movable claw 4, further improving the measurement accuracy.

[0022] Specifically, each L-shaped plate 14 is detachably connected to the movable claw 4 via bolts 17. This detachable connection facilitates replacement and maintenance of the L-shaped plates 14, enhancing ease of use.

[0023] Specifically, the inner walls of the upper and lower sides of the placement groove 6 are provided with strip-shaped grooves 15, and strip-shaped blocks 16 are installed on the upper and lower sides of each connecting plate 7. Each strip-shaped block 16 is engaged in the corresponding strip-shaped groove 15 and can slide along the corresponding strip-shaped groove 15. The strip-shaped blocks 16 have a supporting and limiting function for the connecting plate 7, ensuring the stability of the connecting plate 7.

[0024] Specifically, the working surface of each connecting plate 7 is flush with the working surface of the fixing claw 3. This flush alignment of the working surfaces of the connecting plates 7 and the fixing claw 3 improves measurement accuracy.

[0025] Specifically, the working surface of each L-shaped plate 14 is flush with the working surface of the movable jaw 4. This flush alignment of the L-shaped plate 14 with the movable jaw 4 further improves measurement accuracy.

[0026] Specifically, the vernier caliper body 1 is a digital display vernier caliper. The digital display vernier caliper has a zeroing function, which allows the caliper to be zeroed, thereby reducing errors and making it easier for operators to read data.

[0027] Example:

[0028] When using this device, if it is necessary to widen the fixed claw 3, rotate the adjusting bolt 12. The rotation of the adjusting bolt 12 drives the second bevel gear 13 to rotate, which in turn drives the first bevel gear 11 to rotate. The rotation of the first bevel gear 11 drives the lead screw 8 to rotate, which causes the nut 9 to move along the lead screw 8. The movement of the nut 9 drives the support rod 10 to move, which pushes the connecting plate 7 outward. The connecting plate 7 slides outward along the placement groove 6, thereby increasing the width of the fixed claw 3. This allows the two measuring claws to be clamped in parallel when measuring rectangular samples, avoiding offset between the measuring claws, ensuring that the measured distance is the actual size of the sample, and reducing measurement error.

[0029] This invention has a simple structure and is easy to use. By cooperating with the lead screw, nut and support rod, the measuring jaws of the vernier caliper can be widened, so that when measuring rectangular samples, the two measuring jaws can be clamped in parallel, avoiding the offset between the measuring jaws, ensuring that the measured distance is the actual size of the sample and reducing the measurement error.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for testing the mechanical properties of composite materials, comprising a vernier calliper body (1), characterised in that: The vernier caliper body (1) top is equipped with inner diameter measuring claw (2), the vernier caliper body (1) bottom one side is equipped with fixed claw (3) and movable claw (4), the fixed claw (3) one side installs connecting block (5), the connecting block (5) is equipped with the placement slot (6), the placement slot (6) front and back two sides and right side are communicated with the outside, the placement slot (6) is equipped with two front and back distribution connecting plates (7) in sliding, the placement slot (6) is equipped with the vertical screw rod (8) in rotating through bearing, the screw rod (8) upper and lower ends are equipped with opposite threads, the screw rod (8) upper and lower ends are all installed nut (9), every the nut (9) both sides are all hinged support rod (10), every the support rod (10) one end is all hinged with corresponding connecting plate (7), the screw rod (8) top end installs first bevel gear (11), the fixed claw (3) other side installs adjusting bolt (12), the adjusting bolt (12) one end installs second bevel gear (13), the first bevel gear (11) is engaged with second bevel gear (13) connection; The movable claw (4) one side front and back two sides are all installed L-shaped plate (14); Every L-shaped plate (14) is detachably connected with movable claw (4) by bolt (17); The placement slot (6) upper and lower two side inner walls are all equipped with strip-shaped sliding slot (15), every connecting plate (7) upper and lower two sides are all installed strip-shaped block (16), every strip-shaped block (16) is all clamped into corresponding strip-shaped slot (15) and can slide along corresponding strip-shaped slot (15); Every connecting plate (7) working surface is flush with the fixed claw (3) working surface; Every L-shaped plate (14) working surface is flush with the movable claw (4) working surface; The vernier caliper body (1) is digital vernier caliper.

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