A strength testing device for strip-shaped test specimens

Abstract

This application relates to a strength testing device for a strip-shaped test specimen, comprising a support base, a clamping assembly slidably mounted on the top surface of the support base for holding the strip-shaped test specimen, a sliding drive assembly for driving the clamping assembly to slide, and a testing mechanism for testing the strip-shaped test specimen. The testing mechanism includes an abutment member that abuts against the middle of the strip-shaped test specimen, a strength testing instrument, and a testing drive assembly for driving the testing instrument to move towards the strip-shaped test specimen. The pressure head of the testing instrument is connected to the abutment member. This application has the effect of quickly and efficiently testing the strength of strip-shaped test specimens.

Description

Technical Field

[0001] This application relates to the field of strength testing devices, and more particularly to a strength testing device for a strip-shaped test piece. Background Technology

[0002] Material strength testing is a crucial aspect of materials science and engineering, widely applied to the quality assessment of various materials, including metals, plastics, and composites. Many test pieces are strip-shaped, and currently, strength testing of these strip-shaped specimens is primarily achieved using equipment such as universal testing machines and hardness testers. However, these devices are not only complex to operate but also bulky and impractical to carry. While hardness testers and handheld testing instruments are more portable than the aforementioned equipment, allowing for manual or semi-automatic force application and data recording, these methods, to some extent, meet the basic requirements for strength testing of strip-shaped specimens. However, they also present several inconveniences in practical applications, such as difficulty in precisely controlling the loading force and location, leading to lower accuracy and reliability of the test results.

[0003] In response to the aforementioned related technologies, the inventors provide a strip test specimen strength testing device capable of rapidly testing the strength of strip test specimens. Utility Model Content

[0004] In order to quickly and efficiently test the strength of strip-shaped test specimens, this application provides a strength testing device for strip-shaped test specimens.

[0005] The strength testing device for strip-shaped test specimens provided in this application adopts the following technical solution: A strength testing device for a strip-shaped test piece includes a support base, a clamping assembly slidably mounted on the top surface of the support base for clamping the strip-shaped test piece, a sliding drive assembly for driving the clamping assembly to slide, and a testing mechanism for testing the strip-shaped test piece; the testing mechanism includes an abutment member that abuts against the middle of the strip-shaped test piece, a strength testing instrument, and a testing drive assembly for driving the testing instrument to move toward the strip-shaped test piece, wherein the pressure head of the testing instrument is connected to the abutment member.

[0006] By adopting the above technical solution, in the strength testing process of strip-shaped test specimens, the strip-shaped test specimens are first arranged on the clamping base, and the strip-shaped test specimens are arranged vertically. The sliding drive component allows the clamping base to adapt to strip-shaped test specimens of different sizes. Then, the detection drive component drives the detector to slide towards the strip-shaped test specimen, thereby driving the abutting part to abut against the strip-shaped test specimen and driving the strip-shaped test specimen to continuously deform. When cracks appear on the surface of the strip-shaped test specimen, the value on the detector is recorded, thus completing the strength testing process of the strip-shaped test specimens. Compared with traditional testing methods, the testing direction of this application is more convenient and efficient.

[0007] Optionally, the clamping assembly includes two clamping seats arranged opposite each other and cooperating with both ends of the strip-shaped test piece. The clamping seats have abutting surfaces that abut against both ends of the strip-shaped test piece. The clamping seats are also provided with limiting posts for limiting the strip-shaped test piece to be tilted or vertically arranged on the top surface of the support base.

[0008] By adopting the above technical solution, the specific structure of the clamping assembly is disclosed. The clamping seat provides a placement station for the strip-shaped test piece. The abutment surface on the clamping seat can provide support for both ends of the strip-shaped test piece. The upper limit post of the clamping seat allows the strip-shaped test piece placed on the clamping seat to be in a state perpendicular to the clamping seat or inclined on the top surface of the clamping seat, which helps to detect the strength of the strip-shaped test piece in the future and improves the strength detection accuracy of the strip-shaped test piece.

[0009] Optionally, the sliding drive assembly includes a bidirectional lead screw rotatably mounted on the top surface of the support base, a sliding motor for driving the bidirectional lead screw to rotate, a first sliding nut mounted on one of the clamping seats and cooperating with one end of the bidirectional lead screw, and a second sliding nut mounted on the other clamping seat and cooperating with the other end of the bidirectional lead screw.

[0010] By adopting the above technical solution, the specific structure of the sliding drive assembly is disclosed. By driving the two clamping seats to move through the bidirectional lead screw and the sliding motor, the two clamping seats can move synchronously and relative to each other, which is convenient for quickly and accurately clamping strip-shaped test pieces of different lengths. At the same time, combined with the support base, clamping assembly, detection mechanism and other structures, the strength detection of strip-shaped test pieces can be realized.

[0011] Optionally, the bottom surface of the clamping seat is provided with a guide groove, and the top surface of the support base has a guide protrusion that cooperates with the guide groove. The cross-section of the guide groove is T-shaped.

[0012] By adopting the above technical solution, the guide groove on the bottom surface of the clamping seat and the guide protrusion on the top surface of the support base help to guide the sliding process of the clamping seat, making the sliding of the clamping seat on the top surface of the support base more stable, thereby ensuring the positional accuracy of the strip test piece during the testing process and improving the accuracy of strength testing.

[0013] Optionally, the abutting member includes an abutting rod that abuts against the strip-shaped test piece and a connecting rod that is connected to the pressure head of the detector. The abutting rod and the connecting rod are arranged perpendicularly, and the extension direction of the abutting rod is perpendicular to the extension direction of the strip-shaped test piece arranged in the clamping seat.

[0014] By adopting the above technical solution, the abutting part is engaged with the strip-shaped test piece through the abutting rod, and the connecting rod is connected to the pressure head of the tester. The abutting rod is perpendicular to the connecting rod, and the extension direction of the abutting rod is perpendicular to the extension direction of the strip-shaped test piece, which can ensure that the tester can accurately test the strength of the strip-shaped test piece.

[0015] Optionally, the abutment rod is a cylindrical rod and the length of the abutment rod is greater than the width of the strip-shaped test piece.

[0016] By adopting the above technical solution, the cylindrical rod abutment can make better contact with the strip-shaped test piece. The length of the abutment rod is greater than the width of the strip-shaped test piece, which can ensure that the abutment rod can completely cover the middle of the strip-shaped test piece. This allows for more accurate application of pressure to the strip-shaped test piece during testing, thereby improving the accuracy of strength testing.

[0017] Optionally, the detection drive assembly includes a sliding stage for mounting the detector, a lead screw nut mounted on the sliding stage, a bearing seat mounted on the support base, a detection lead screw mounted on the bearing seat and cooperating with the lead screw nut, and a drive handwheel for driving the detection lead screw to rotate. The top surface of the support base is also provided with a guide slider that cooperates with the sliding stage, and the bottom surface of the sliding stage is provided with a guide groove for arranging the guide slider.

[0018] By adopting the above technical solution, the specific structure of the detection drive assembly is disclosed. The drive handwheel drives the rotation of the detection screw, and the screw nut and the sliding stage together drive the sliding of the detector mounted on the sliding stage. The guide slider on the top surface of the support base and the guide groove on the bottom surface of the sliding stage help guide the sliding process of the sliding stage, improving the detection accuracy of the strength test of the strip-shaped test piece.

[0019] Optionally, the sliding stage is provided with sliding balls at the guide groove for engaging with the guide slider.

[0020] By adopting the above technical solution, the sliding table is provided with sliding balls in the guide groove, which helps to transform sliding friction into rolling friction, reduce the friction between the sliding table and the guide slider, and make the sliding table move more smoothly.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. A strength testing device for a strip-shaped test piece, wherein during the strength testing process of the strip-shaped test piece, the strip-shaped test piece is first arranged on a clamping seat, and the strip-shaped test piece is arranged vertically. The sliding drive component enables the clamping seat to adapt to strip-shaped test pieces of different sizes. Then, the detection drive component drives the detector to slide towards the strip-shaped test piece, thereby driving the abutting part to abut against the strip-shaped test piece and driving the strip-shaped test piece to continuously deform. When cracks appear on the surface of the strip-shaped test piece, the value on the detector is recorded, thus completing the strength testing process of the strip-shaped test piece. Compared with traditional testing methods, the testing direction of this application is more convenient and efficient. 2. By setting the upper limit post of the clamping seat, the strip test piece arranged on the clamping seat can be in a state of being perpendicular to the clamping seat or inclined on the top surface of the clamping seat, which helps to test the strength of the strip test piece in the future and helps to improve the strength test accuracy of the strip test piece. 3. The setting of sliding balls in the guide groove of the sliding table helps to convert sliding friction into rolling friction, reduce the friction between the sliding table and the guide slider, and make the sliding table move more smoothly. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the strength testing device for the strip-shaped test specimen in the embodiments of this application.

[0023] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0024] Figure 3 This is a schematic diagram of the structure of the sliding drive component and the clamping seat in an embodiment of this application.

[0025] Figure 4 This is a cross-sectional schematic diagram of the cooperation between the support base and the clamping seat in an embodiment of this application.

[0026] Figure 5 This is a schematic diagram of the structure of the testing mechanism in the embodiments of this application.

[0027] Figure 6 This is a cross-sectional schematic diagram of the cooperation between the guide slider and the sliding stage in an embodiment of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Support base; 11. First support plate; 12. Second support plate; 13. Reinforcing plate; 14. Guide protrusion; 15. Guide slider; 2. Clamping assembly; 21. Clamping seat; 211. Abutment surface; 212. Limiting post; 213. Guide groove; 3. Sliding drive assembly; 31. Bidirectional lead screw; 32. Sliding motor; 33. First sliding nut; 34. Second sliding nut; 4. Detection mechanism; 41. Abutment part; 411. Abutment rod; 412. Connecting rod; 42. Detector; 43. Detection drive assembly; 431. Sliding stage; 4311. Guide groove; 4312. Mounting groove; 4313. Sliding ball; 432. Lead screw nut; 433. Bearing seat; 434. Detection lead screw; 435. Drive handwheel. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0030] This application discloses a strength testing device for a strip-shaped test specimen. (Refer to...) Figure 1 A strength testing device for a strip-shaped test piece includes a support base 1, a clamping assembly 2 slidably mounted on the top surface of the support base 1, a sliding drive assembly 3 for driving the clamping assembly 2 to slide, and a testing mechanism 4 for testing the strip-shaped test piece. The support base 1 includes a first support plate 11 for sliding the clamping assembly 2, a second support plate 12 for arranging the testing mechanism 4 and perpendicular to the first support plate 11, and a reinforcing plate 13 connecting the first support plate 11 and the second support plate 12.

[0031] Reference Figure 1 and Figure 2 The clamping assembly 2 is used to clamp the strip-shaped test piece so that the testing mechanism 4 can perform strength testing on the strip-shaped test piece. The clamping assembly 2 includes two clamping seats 21 arranged opposite to each other and cooperating with both ends of the strip-shaped test piece. The clamping seats 21 have abutment surfaces 211 that abut against both ends of the strip-shaped test piece. In order to reduce the probability of the strip-shaped test piece tipping over when placed in the clamping seats 21 and affecting the subsequent testing process, the clamping seats 21 are also provided with limiting posts 212 for restricting the strip-shaped test piece. The limiting posts 212 are arranged vertically on the top surface of the clamping seats 21, and the strip-shaped test piece is arranged between the limiting posts 212 and the abutment surfaces 211 of the clamping seats 21.

[0032] Reference Figure 1 and Figure 3The sliding drive assembly 3 includes a bidirectional lead screw 31 rotatably mounted on the top surface of the support base 1, a sliding motor 32 for driving the bidirectional lead screw 31 to rotate, a first sliding nut 33 mounted on one clamping seat 21 and cooperating with one end of the bidirectional lead screw 31, and a second sliding nut 34 mounted on another clamping seat 21 and cooperating with the other end of the bidirectional lead screw 31. The extension direction of the bidirectional lead screw 31 is parallel to the extension direction of the first support plate 11. During the sliding process of the clamping seat 21, the rotation of the bidirectional lead screw 31 is achieved by the sliding motor 32. The first sliding nut 33 and the second sliding nut 34 enable the clamping seat 21 to slide on the support base 1, thereby adjusting the distance between the two clamping seats 21. This allows the strength testing device for strip-shaped test pieces to be adapted to strip-shaped test pieces of different sizes.

[0033] Reference Figure 4 To guide the sliding process of the clamping seat 21, a guide groove 213 is provided on the bottom surface of the clamping seat 21, and a guide protrusion 14 that mates with the guide groove 213 is provided on the top surface of the support base 1. The guide groove 213 has a T-shaped cross-section. To further improve the stability of guiding the clamping seat 21 during its sliding process, two guide protrusions 14 are provided on the top surface of the support base 1.

[0034] Reference Figure 5 The testing mechanism 4 includes an abutting member 41 that abuts against the middle of the strip-shaped test piece, a testing instrument 42 for testing the strength of the strip-shaped test piece, and a testing drive assembly 43 for driving the testing instrument 42 to move towards the strip-shaped test piece. The abutting member 41 is connected to the pressure head of the testing instrument 42. The abutting member 41 includes an abutting rod 411 that abuts against the strip-shaped test piece and a connecting rod 412 that connects to the pressure head of the testing instrument 42. The abutting rod 411 and the connecting rod 412 are arranged perpendicularly, and the extension direction of the abutting rod 411 is perpendicular to the extension direction of the strip-shaped test piece arranged on the clamping seat 21. Thus, through the abutting engagement between the abutting member 41 and the strip-shaped test piece, the testing instrument 42 tests the strength of the strip-shaped test piece. To improve the accuracy of strength testing of the strip-shaped test piece, the abutment rod 411 of the abutment member 41 is a cylindrical rod to reduce the probability of structural damage to the strip-shaped test piece. Furthermore, the length of the abutment rod 411 is greater than the width of the strip-shaped test piece, ensuring that the strip-shaped test piece is subjected to uniform force. In this embodiment, the testing instrument 42 is a portable handheld force gauge.

[0035] Reference Figure 5 and Figure 6The detection drive assembly 43 includes a sliding stage 431 for mounting the detector 42, a lead screw nut 432 mounted on the sliding stage 431, a bearing seat 433 mounted on the support base 1, a detection lead screw 434 mounted on the bearing seat 433 and cooperating with the lead screw nut 432, and a drive handwheel 435 for driving the detection lead screw 434 to rotate. To guide the sliding process of the sliding stage, the top surface of the support base 1 is also provided with a guide slider 15 that cooperates with the sliding stage 431, and the bottom surface of the sliding stage 431 has a guide groove 4311 for arranging the guide slider 15. To improve the smoothness of the sliding of the sliding stage 431, the sliding stage 431 has a mounting groove 4312 at the guide groove 4311, and the mounting groove 4312 is provided with sliding balls 4313 for abutting against the guide slider 15, thereby converting sliding friction into rolling friction.

[0036] The implementation principle of the strip test specimen strength testing device in this application embodiment is as follows: In the strength testing process of the strip test specimen, the strip test specimen is first placed on the clamping seat 21. The setting of the limiting post 212 enables the strip test specimen to be arranged vertically or inclined on the top surface of the clamping seat 21. The sliding drive component 3 drives the clamping seat 21 to slide so that the distance between the two clamping seats 21 can be adapted to the length of the strip test specimen. Then, the detection drive component 43 drives the sliding stage 431 to slide, thereby driving the detector 42 and the abutment 41 connected to the pressure head of the detector 42 to slide toward the strip test specimen until cracks are generated on the surface of the strip test specimen. The data on the detector 42 is recorded, thereby completing the testing process quickly and efficiently.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A strength testing device for a strip-shaped test specimen, characterized in that, The device includes a support base (1), a clamping assembly (2) slidably mounted on the top surface of the support base (1) for clamping a strip-shaped test piece, a sliding drive assembly (3) for driving the clamping assembly (2) to slide, and a detection mechanism (4) for detecting the strip-shaped test piece; the detection mechanism (4) includes an abutment (41) that abuts against the middle of the strip-shaped test piece, a detector (42) for detecting strength, and a detection drive assembly (43) for driving the detector (42) to move toward the strip-shaped test piece, wherein the abutment (41) is connected to the pressure head of the detector (42).

2. The strength testing apparatus for a test strip according to claim 1, wherein The clamping assembly (2) includes two clamping seats (21) arranged opposite to each other and cooperating with the two ends of the strip test piece. The clamping seats (21) have abutting surfaces (211) that abut against the two ends of the strip test piece. The clamping seats (21) are also provided with limiting posts (212) for limiting the strip test piece to be tilted or vertically arranged on the top surface of the clamping seats (21).

3. The strength testing apparatus for a test strip according to claim 2, wherein The sliding drive assembly (3) includes a bidirectional lead screw (31) rotatably mounted on the top surface of the support base (1), a sliding motor (32) for driving the bidirectional lead screw (31) to rotate, a first sliding nut (33) mounted on one of the clamping seats (21) and cooperating with one end of the lead screw of the bidirectional lead screw (31), and a second sliding nut (34) mounted on the other clamping seat (21) and cooperating with the other end of the lead screw of the bidirectional lead screw (31).

4. The strength testing apparatus for a test strip according to claim 3, wherein The bottom surface of the clamping seat (21) is provided with a guide groove (213), and the top surface of the support base (1) has a guide protrusion (14) that cooperates with the guide groove (213). The cross section of the guide groove (213) is T-shaped.

5. The strength testing apparatus for a test strip according to claim 2, wherein The abutting member (41) includes an abutting rod (411) that abuts against the strip test piece and a connecting rod (412) that is connected to the pressure head of the detector (42). The abutting rod (411) is arranged perpendicularly to the connecting rod (412) and the extension direction of the abutting rod (411) is arranged perpendicularly to the extension direction of the strip test piece arranged on the clamping seat (21).

6. The strength testing apparatus for a test strip according to claim 5, wherein The abutment rod (411) is a cylindrical rod and the length of the abutment rod (411) is greater than the width of the strip test piece.

7. The strength testing apparatus for a test strip according to claim 1, wherein The detection drive assembly (43) includes a sliding stage (431) for mounting the detector (42), a lead screw nut (432) mounted on the sliding stage (431), a bearing seat (433) mounted on the support base (1), a detection lead screw (434) mounted on the bearing seat (433) and cooperating with the lead screw nut (432), and a drive handwheel (435) for driving the detection lead screw (434) to rotate. The top surface of the support base (1) is also provided with a guide slider (15) cooperating with the sliding stage (431), and the bottom surface of the sliding stage (431) is provided with a guide groove (4311) for arranging the guide slider (15).

8. The strength testing apparatus for a test strip according to claim 7, wherein The sliding table (431) is provided with a sliding ball (4313) at the guide groove (4311) for abutting and cooperating with the guide slider (15).

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