An integrated anti-tear hook device applied to micro-soft materials

Abstract

The utility model relates to the technical field of micro soft material mechanics testing device, concretely relates to a kind of integrated anti-tear hook device applied to micro soft material, including device main body, device main body is sequentially provided with upper cover and lower cover, the outside of upper cover and lower cover is provided with anti-tear hook assembly, the fixed mounting component for guaranteeing that anti-tear hook assembly uniformly stretches micro soft material is arranged between device main body and anti-tear hook assembly;Fixed mounting component includes: fixed pulley between upper cover and lower cover.The front narrow middle wide arc structure and round angle design of anti-tear hook assembly and the design of five evenly distributed straight rod hooks reduce the puncture injury of micro soft material, cooperate with the hooking mode from bottom to top, avoid the expansion and slip of puncture hole caused by multiple stretching, solve the technical problem that straight hook easily leads to material tearing, slip, affect test stability and material integrity.

Description

Technical Field

[0001] This utility model relates to the technical field of mechanical testing devices for micro soft materials, specifically to an integrated anti-tear hook device applied to micro soft materials. Background Technology

[0002] The integrated anti-tear hook device is a specialized fixation device for biaxial mechanical property testing of micro-soft materials. It is suitable for biological soft tissues such as blood vessels, esophagus, and Achilles tendon, or similar micro-flexible materials. By precisely fixing the material and applying balanced tension, it obtains key mechanical parameters such as the elastic modulus and tear strength of the material, providing data support for the research and development of medical devices such as artificial blood vessels and cardiac stents.

[0003] Existing biaxial tensile fixation methods for micro-soft materials mainly fall into two categories: one is a large clamp with a separable cover plate and base, which fixes the material by clamping. This is suitable for larger materials that are not easily deformed, but when used for micro-soft materials, the clamping area is insufficient, leading to unstable fixation, and the clamps in multiple directions are prone to collisions. The other is a small hook with dense straight hooks, which fixes the material by piercing. However, the straight hook structure is prone to dulling and bending after repeated use, and the top-down hooking method has a small operating space. After repeated stretching, the piercing hole in the material enlarges and is prone to slippage. At the same time, the uneven force on the multiple straight hooks can easily lead to material tearing, affecting the test accuracy and material integrity. Therefore, we propose an integrated anti-tear bending hook device for micro-soft materials. Utility Model Content

[0004] To address the aforementioned issues, an integrated anti-tear hook device for micro-soft materials is provided. Through the front-narrow, middle-wide arc structure of the anti-tear hook assembly and the bottom-up hooking method, puncture damage to micro-soft materials is reduced, and slippage caused by repeated stretching is avoided. A fixed pulley assembly ensures balanced force during biaxial stretching. Combined with a detachable structure and biocompatible design, testing accuracy and material integrity are improved. This solves the technical problems of traditional hooks that easily lead to material tearing and slippage, uneven force distribution, and inconvenient maintenance.

[0005] To address the problems of existing technologies, this utility model provides an integrated anti-tear hook device for micro-sized soft materials, comprising a device body, an upper cover and a lower cover sequentially arranged on the device body, and an anti-tear hook assembly disposed on the outer side of the upper cover and the lower cover. A fixing and mounting assembly is disposed between the device body and the anti-tear hook assembly to ensure that the anti-tear hook assembly uniformly stretches the micro-sized soft material. The fixing and mounting assembly includes: a fixed pulley located between the upper cover and the lower cover, the fixed pulley being rotatably connected to the lower cover and used to realize the force transmission of the rope; a rigid rope connected to both sides of the fixed pulley, the rigid rope being used to assist in the connection between the anti-tear hook assembly and the fixed pulley; and a hook connector fixedly connected to the end of the rigid rope, the hook connector being used to fix the anti-tear hook assembly.

[0006] Preferably, the tear-resistant hook assembly and the hook connector are detachably connected, allowing for the replacement of hooks of different sizes according to the specifications of small, soft materials.

[0007] Preferably, a first magnetic block is fixedly installed on the side of the main body of the device near the lower cover, and a second magnetic block is fixedly installed on the side of the lower cover near the first magnetic block.

[0008] Preferably, the upper cover is detachably connected to the lower cover by bolts and washers.

[0009] Preferably, a fixing and mounting component is provided between the main body of the device and the anti-tear hook assembly to ensure that the anti-tear hook assembly can evenly stretch the tiny soft material. The fixing and mounting component includes a protrusion and a groove; the protrusion is fixedly connected to the lower cover; the groove is opened on the side of the upper cover near the protrusion, and the groove slides with the protrusion.

[0010] Preferably, the tear-resistant hook assembly consists of five evenly distributed straight hooks, which are fixedly connected to the lower cover.

[0011] The advantages of this utility model compared to the prior art are: 1. By using the front narrow and middle wide arc structure and rounded corner design of the anti-tear hook assembly, as well as the design of five evenly distributed straight rod hooks, the damage caused by punctures of small soft materials is reduced. Combined with the bottom-up hooking method, the enlargement of puncture holes and slippage caused by repeated stretching are avoided. This solves the technical problem that straight hooks are prone to causing material tearing and slippage, affecting the stability of testing and the integrity of materials.

[0012] 2. By using a fixed pulley and multiple sets of evenly distributed rounded hooks, the material is subjected to balanced forces in all directions during biaxial stretching, avoiding local stress concentration, improving the accuracy of test data, and solving the technical problem of test result deviation caused by uneven force distribution in traditional hooks.

[0013] 3. The detachable structure of the main body of the device and the modular design of the fixed installation components facilitate the quick replacement of worn parts. Combined with the biocompatible coating on the surface of the hook, it reduces maintenance costs and protects materials, solving the technical problems of cumbersome hook maintenance and easy contamination or damage to materials. Attached Figure Description

[0014] Figure 1 This utility model application presents a three-dimensional schematic diagram of the main body and fixed pulley of an integrated anti-tear hook device for use in micro-soft materials.

[0015] Figure 2 This utility model application presents a three-dimensional schematic diagram of a fixed pulley and a rigid rope for an integrated anti-tear hook device applied to tiny soft materials.

[0016] Figure 3 This utility model application presents a three-dimensional schematic diagram of the fixed pulley and the cross shaft of the integrated anti-tear hook device for micro-soft materials, showing their usage in four directions.

[0017] Figure 4 This utility model application presents a three-dimensional schematic diagram of the main body and the anti-tear hook assembly of an integrated anti-tear hook device for use in micro-soft materials.

[0018] Figure 5 This utility model application presents a three-dimensional schematic diagram of an integrated anti-tear hook device for micro-soft materials, including an anti-tear hook assembly and a second magnetic block.

[0019] Figure 6 This utility model application presents a three-dimensional schematic diagram of the main body of an integrated anti-tear hook device for use on micro-soft materials and the anti-tear hook assembly in four directions of the cross axis.

[0020] The following are the labels in the diagram: 1. Main body of the device; 11. Upper cover; 12. Lower cover; 2. Tear-resistant hook assembly; 3. Fixed installation assembly; 31. Fixed pulley; 32. Rigid rope; 33. Hook connector; 4. First magnetic block; 41. Second magnetic block. Detailed Implementation

[0021] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0022] Example 1, see Figures 1-3As shown, an integrated anti-tear hook device for micro-soft materials includes a device body 1, with an upper cover 11 and a lower cover 12 sequentially arranged on the device body 1. An anti-tear hook assembly 2 is disposed on the outer side of the upper cover 11 and the lower cover 12. A fixing and mounting assembly 3 is disposed between the device body 1 and the anti-tear hook assembly 2 to ensure uniform stretching of the micro-soft material by the anti-tear hook assembly 2. The fixing and mounting assembly 3 includes: a fixed pulley 31 located between the upper cover 11 and the lower cover 12, the fixed pulley 31 being rotatably connected to the lower cover 12, and the fixed pulley 31 being used to realize the force transmission of the rope; connected to the fixed pulley 3... 1. Rigid ropes 32 on both sides are used to assist in connecting the tear-resistant hook assembly 2 to the fixed pulley 31; hook connectors 33 are fixedly connected to the ends of the rigid ropes 32 and are used to fix the tear-resistant hook assembly 2; the tear-resistant hook assembly 2 and the hook connectors 33 are detachably connected and can be used to replace hooks of different sizes according to the specifications of small soft materials; a first magnet 4 is fixedly installed on the side of the main body 1 near the lower cover 12, and a second magnet 41 is fixedly installed on the side of the lower cover 12 near the first magnet 4; the upper cover 11 is detachably connected to the lower cover 12 by bolts and washers.

[0023] Specifically, the main body 1 of the device is preferably made of lightweight, high-strength plastic. The hook body of the tear-resistant hook assembly 2 is made of titanium alloy, aluminum alloy, high-speed steel, or hard alloy, possessing both lightweight and high strength characteristics. The hook surface is coated with a biocompatible coating, specifically a medical-grade biocompatible coating, to prevent damage and contamination caused by direct contact between metal and biological soft tissue. The rigid rope 32 is made of carbon fiber or steel wire rope, possessing high tensile strength. The tear-resistant hook assembly 2 and the hook connector 33 are threaded together. The first magnet 4 and the second magnet 41 are magnetically attracted to each other.

[0024] When the integrated tear-resistant bend hook device is put into use, first, fix the main body 1 of the device to the in-situ biaxial mechanical testing equipment through the mounting holes. Place the lower cover 12 on the main body 1, and magnetically attract the first magnet 4 and the second magnet 41, thus restricting the lower cover 12 to the main body 1. Then, use bolts and washers to restrict the upper cover 11 to the lower cover 12. Select a tear-resistant bend hook assembly 2 of appropriate size according to the specifications of the test material, and fix it to the rigid rope 32 through the hook connector 33. Fix the small soft material to the tear-resistant bend hook assembly 2 in the four directions of the cross axis by manual puncture. Start the testing equipment to carry out biaxial tensile testing. Observe the tensile resistance of the equipment to determine whether the material is horizontally fixed, ensuring that the initial deformation is 0. After the test equipment is started, the fixed pulley 31 transmits the tension through the rigid rope 32. With the force transmission effect of the fixed pulley assembly 31, the material is subjected to uniform force during the stretching process, avoiding tearing caused by local stress concentration. The special structure of the anti-tear hook assembly 2 prevents the material from slipping and tearing, ensuring the stability of the test process.

[0025] The bottom-up hooking method provides a larger operating space, making it easier to manually puncture and fix the material, and reducing accidental damage to the material during operation; the arc-shaped hook structure and rounded corner design of the tear-resistant hook component 2 reduce stress concentration at the contact point between the material and the hook during stretching, and the front-narrow and middle-wide cross-section design increases the contact area between the material and the hook while ensuring puncture capability, further improving fixation stability and avoiding slippage caused by the enlargement of the puncture hole after repeated stretching.

[0026] See Figures 4-5 As shown, an integrated anti-tear hook device for micro-soft materials includes a device body 1, with an upper cover 11 and a lower cover 12 arranged sequentially on the device body 1. Anti-tear hook assemblies 2 are arranged on the outer sides of the upper cover 11 and the lower cover 12. A fixing and mounting assembly 3 is provided between the device body 1 and the anti-tear hook assembly 2 to ensure uniform stretching of the micro-soft material by the anti-tear hook assembly 2. The fixing and mounting assembly 3 includes a protrusion and a groove. The protrusion is fixedly connected to the lower cover 12. The groove is opened on the side of the upper cover 11 near the protrusion, and the groove slides in cooperation with the protrusion. The anti-tear hook assembly 2 consists of five evenly distributed straight hooks, which are fixedly connected to the lower cover 12. A first magnet 4 is fixedly installed on the side of the device body 1 near the lower cover 12, and a second magnet 41 is fixedly installed on the side of the lower cover 12 near the first magnet 4. The upper cover 11 is detachably connected to the lower cover 12 by bolts and washers.

[0027] Specifically, the tear-resistant hook assembly 2 consists of five evenly distributed straight hooks, equidistantly arranged along the material edge to ensure uniform stress distribution during material stretching, thus preventing tearing caused by localized stress concentration. The protrusions and grooves use a clearance fit to ensure precise positioning of the upper cover 11 and lower cover 12, avoiding assembly deviations.

[0028] During assembly, first align the groove of the upper cover 11 with the protrusion of the lower cover 12 and slide it in. The first magnetic block 4 and the second magnetic block 41 will attract each other simultaneously, achieving pre-fixation and precise positioning of the main body 1. Then, tighten the bolts with tools to complete the stable assembly of the main body 1. During disassembly and maintenance, loosen the bolts to separate the upper cover 11 and the lower cover 12. The operation is convenient and facilitates the replacement of the fixed pulley 31, rigid rope 32, or tear-resistant hook assembly 2.

[0029] The anti-tear hook assembly 2 operates synchronously in the four directions of the cross axis. The anti-tear hook assembly 2 consists of five evenly distributed straight rod hooks, which are equidistantly arranged along the edge of the material to ensure uniform force during the material stretching process. This avoids tearing caused by local stress concentration, ensures that the material is subjected to balanced force in the biaxial direction, achieves uniform stretching, and improves the accuracy and reliability of test data.

[0030] Working principle: When the integrated anti-tear hook device is put into use, the main body 1 of the device is first fixed in place on the biaxial mechanical testing equipment. The groove of the upper cover 11 is aligned with the protrusion of the lower cover 12 and slidably inserted. The first magnetic block 4 on the side of the main body 1 near the lower cover 12 and the corresponding second magnetic block 41 of the lower cover 12 are magnetically attracted to each other. Then the bolts are tightened to complete the stable assembly of the main body 1. According to the specifications of the small soft material, the appropriate anti-tear hook component 2 and the fixed installation component 3 are selected. The anti-tear hook component 2 has a front narrow and middle wide rounded corner design and a bottom-up hooking method to reduce the risk of material damage and slippage.

[0031] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. An integrated tear-resistant hook device for use in micro-soft materials, comprising a device body (1), wherein the device body (1) is provided with an upper cover (11) and a lower cover (12) in sequence, and tear-resistant hook assemblies (2) are provided on the outer sides of the upper cover (11) and the lower cover (12), characterized in that, A fixing and mounting component (3) is provided between the main body (1) of the device and the anti-tear hook assembly (2) to ensure that the anti-tear hook assembly (2) can evenly stretch the tiny soft material. Fixed installation components (3) include: A fixed pulley (31) is located between the upper cover (11) and the lower cover (12). The fixed pulley (31) is rotatably connected to the lower cover (12). The fixed pulley (31) is used to realize the force transmission of the rope. The rigid ropes (32) connected to both sides of the fixed pulley (31) are used to assist in connecting the tear-resistant hook assembly (2) to the fixed pulley (31); A hook connector (33) is fixedly connected to the end of a rigid rope (32). The hook connector (33) is used to fix the tear-resistant hook assembly (2).

2. The integrated anti-tear hook device for micro-soft materials according to claim 1, characterized in that, The tear-resistant hook assembly (2) adopts two rounded hook structures from bottom to top. The rounded hooks are arc-shaped, with rounded corners in the middle. The cross-sectional area of ​​the front end of the hook is no greater than 0.5mm. 2 The cross-section at the middle end is not less than 1mm. 2 .

3. The integrated anti-tear hook device for micro-soft materials according to claim 2, characterized in that, The tear-resistant hook assembly (2) and the hook connector (33) are detachably connected and can be used to replace hooks of different sizes according to the specifications of small soft materials.

4. The integrated anti-tear hook device for micro-soft materials according to claim 1, characterized in that, The first magnetic block (4) is fixedly installed on the side of the main body (1) near the lower cover (12), and the second magnetic block (41) is fixedly installed on the side of the lower cover (12) near the first magnetic block (4).

5. The integrated anti-tear hook device for micro-soft materials according to claim 1, characterized in that, The upper cover (11) is detachably connected to the lower cover (12) by bolts and washers.

6. The integrated anti-tear hook device for micro-soft materials according to claim 1, characterized in that, A fixing and mounting component (3) is provided between the main body (1) of the device and the anti-tear hook assembly (2) to ensure that the anti-tear hook assembly (2) can evenly stretch the small soft material. The fixing and mounting component (3) includes a protrusion and a groove. The protrusion is fixedly connected to the lower cover (12); The groove is formed on the side of the upper cover (11) near the protrusion, and the groove slides with the protrusion.

7. The integrated anti-tear hook device for micro-soft materials according to claim 5, characterized in that, The tear-resistant hook assembly (2) consists of five evenly distributed straight hooks, which are fixedly connected to the lower cover (12).

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