Device for testing tensile strength of aramid sleeve belt for rescue

Abstract

The utility model discloses a tensile strength testing device for an aramid sleeve belt for rescue, which comprises a testing host, and an up-and-down movement driving assembly is arranged above the testing host. According to the device, the end of the aramid sleeve belt penetrates through the belt penetrating opening and is attached to the surface of the cambered surface block, then the threaded column is operated to rotate, so that the threaded sleeve drives the U-shaped clamping plate to move, the arc-shaped clamping groove of the U-shaped clamping plate is attached to the surface of the cambered surface block, and the end of the aramid sleeve belt is completely clamped; the matching of a raised line and a strip-shaped groove improves the firmness degree of fixation, then an up-and-down movement driving assembly works to drive a tension sensor, a fixed seat and a push type clamp at the top to move upwards, a tensile test is carried out on the aramid sleeve belt, the end part of the aramid sleeve belt is attached to an arc-shaped surface, uniform stress is ensured, and the tensile strength of the aramid sleeve belt is improved. Therefore, the purposes of completely clamping the end part of the aramid sleeve belt in a thread pushing manner, ensuring uniform stress when the aramid sleeve belt is stretched, and ensuring the accuracy of a test result can be achieved.

Description

Technical Field

[0001] This utility model belongs to the field of aramid belt testing technology, and in particular relates to a tensile strength testing device for aramid belts used in rescue operations. Background Technology

[0002] Aramid harnesses for rescue are belt-shaped equipment made of aramid fibers (such as aramid 1313 and aramid 1414) for use in rescue scenarios. Aramid fiber, also known as aromatic polyamide fiber, has a series of excellent properties such as ultra-high strength, high modulus, high temperature resistance, and chemical corrosion resistance.

[0003] Aramid slings used for rescue operations require tensile strength testing. During this process, clamps are typically used to directly clamp both ends of the aramid sling. However, because aramid slings are generally wide, ordinary clamps cannot completely hold the ends, leading to tearing at the ends during stretching and uneven stress causing fiber breakage, thus affecting the test results. Therefore, we propose a tensile strength testing device for aramid slings used for rescue operations. This device uses a threaded clamping method to completely hold the ends of the aramid sling, ensuring uniform stress during stretching and guaranteeing accurate test results. Utility Model Content

[0004] The purpose of this invention is to provide a tensile strength testing device for aramid tape used in rescue operations. This device has the advantages of using a threaded clamping method to fully clamp the end of the aramid tape, ensuring uniform force distribution during tensioning and accurate test results, thereby solving the aforementioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A tensile strength testing device for aramid tape for rescue purposes, comprising a testing host, an up-and-down moving drive assembly installed above the testing host, a tension sensor fixedly installed on the front side of the lifting end of the up-and-down moving drive assembly, a fixed seat fixedly installed on the tension testing end at the bottom of the tension sensor and the top of the testing host, and a push-tightening clamp provided on the opposite side of the two fixed seats, the push-tightening clamp comprising a fixed block, a tape-passing opening opened on the top of the fixed block, a U-shaped clamping plate slidably connected to the surface of the fixed block, a threaded column rotatably connected to the front side of the fixed block, a threaded sleeve fixedly connected to the front side of the U-shaped clamping plate, the front end of the threaded column penetrating to the front side of the U-shaped clamping plate and threadedly connected to the threaded sleeve, an arc-shaped block fixedly connected to the opposite side of the two fixed blocks, and an arc-shaped clamping groove adapted to the arc-shaped block opened at one end of the U-shaped clamping plate.

[0006] Preferably, each of the two fixed blocks is fixedly connected to a connecting frame on opposite sides, and the connecting frame is fixedly mounted on the fixed base by bolts.

[0007] Preferably, the surface of the arc-shaped block is provided with multiple strip grooves, and multiple protrusions adapted to the strip grooves are fixedly connected to the inner wall of the arc-shaped grooves.

[0008] Preferably, a handwheel is fixedly installed at the end of the threaded post away from the fixing block.

[0009] Preferably, a rectangular cavity is provided on each of the two fixed blocks on opposite sides, and a rotating roller is rotatably connected to both sides of the inner cavity of the rectangular cavity.

[0010] The beneficial effects of this utility model are:

[0011] 1. This utility model involves passing the end of the aramid tape through the threading opening and attaching it to the surface of the arc block. Then, by rotating the threaded column, the threaded sleeve drives the U-shaped clamping plate to move, so that the arc-shaped clamping groove of the U-shaped clamping plate is attached to the surface of the arc block to completely clamp the end of the aramid tape. The cooperation between the convex strip and the strip groove improves the fixation firmness. Then, the up-and-down moving drive component works to drive the tension sensor, the fixed seat and the top push-type clamping fixture to move upward to perform a tensile test on the aramid tape. The end of the aramid tape is attached to the arc surface to ensure uniform force. This achieves the purpose of completely clamping the end of the aramid tape by using the threaded push-tightening method, ensuring uniform force on the aramid tape during tension and ensuring the accuracy of the test results.

[0012] 2. By using the rectangular cavity and the rotating roller in combination, the aramid tape will come into contact with the rotating roller during the stretching process, avoiding the wear caused by friction caused by the repeated contact between the aramid tape and the inner wall of the tape threading opening, thus ensuring the accuracy of the aramid tape test results. Attached Figure Description

[0013] The advantages of the present invention, as described above and / or in the following detailed description in conjunction with the accompanying drawings, will become clearer and more readily understood. These drawings are merely illustrative and do not limit the scope of the present invention.

[0014] Figure 1 This is a perspective view of one embodiment of the present utility model;

[0015] Figure 2 This is a three-dimensional disassembled schematic diagram of a push-type clamp according to an embodiment of the present utility model;

[0016] Figure 3 This is a three-dimensional disassembled schematic diagram of the fixing block and U-shaped clamping plate according to an embodiment of the present invention.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1. Test host, 2. Up and down movement drive assembly, 3. Tension sensor, 4. Fixing base, 5. Push-tight clamp, 51. Fixing block, 52. Threading port, 53. U-shaped clamp, 54. Threaded column, 55. Threaded sleeve, 56. Arc block, 57. Arc-shaped clamping groove, 58. Connecting frame, 59. Strip groove, 510. Raised bar, 511. Handwheel, 512. Rectangular cavity, 513. Rotary roller. Detailed Implementation

[0019] In the following description, embodiments of the aramid tape tensile strength testing device of the present invention will be described with reference to the accompanying drawings.

[0020] Figure 1-3 This invention illustrates an embodiment of a tensile strength testing device for aramid tape used in rescue applications. The device includes a testing host 1, a vertical movement drive assembly 2 mounted above the host 1, a tension sensor 3 fixedly mounted on the front side of the lifting end of the vertical movement drive assembly 2, and fixed seats 4 fixedly mounted on both the tension testing end at the bottom of the tension sensor 3 and the top of the testing host 1. Push-tightening clamps 5 are provided on opposite sides of the two fixed seats 4. Connecting frames 58 are fixedly connected to opposite sides of two fixed blocks 51, and the connecting frames 58 are fixedly mounted on the fixed seats 4 by bolts. Each push-tightening clamp 5 includes a fixed block 51, with a tape-through opening 52 at the top. A U-shaped clamp 53 is slidably connected to the surface of the fixed block 51. A threaded post 54 is rotatably connected to the front side of the fixed block 51, and a handwheel 511 is fixedly mounted at the end of the threaded post 54 away from the fixed block 51. The U-shaped clamp 53... A threaded sleeve 55 is fixedly connected to the front side. The front end of the threaded post 54 passes through to the front side of the U-shaped clamp 53 and is threadedly connected to the threaded sleeve 55. An arc-shaped block 56 is fixedly connected to the opposite side of the two fixed blocks 51. An arc-shaped clamping groove 57 adapted to the arc-shaped block 56 is opened at one end of the U-shaped clamp 53. Multiple strip grooves 59 are opened on the surface of the arc-shaped block 56. Multiple protrusions 510 adapted to the strip grooves 59 are fixedly connected to the inner wall of the arc-shaped clamping groove 57. A rectangular cavity 512 is opened on the opposite side of the two fixed blocks 51. Rotary rollers 513 are rotatably connected to both sides of the inner cavity of the rectangular cavity 512. Through the cooperation of the rectangular cavity 512 and the rotating rollers 513, the aramid tape will come into contact with the rotating rollers 513 during the stretching process. This avoids the wear caused by friction caused by the reciprocating contact between the aramid tape stretching and the inner wall of the tape insertion port 52, thus ensuring the accuracy of the aramid tape test results.

[0021] Working principle: When using this utility model, the user passes both ends of the aramid tape to be tested through the two tape-through holes 52 to the other side of the fixing block 51, so that the aramid tape fits against the arc surface block 56. Then, the handwheel 511 is turned to drive the threaded column 54 to rotate. The threaded sleeve 55, due to the thread, drives the U-shaped clamp 53 to move from the surface of the fixing block 51 to the arc surface block 56. The arc-shaped clamping groove 57 on the U-shaped clamp 53 fits against the surface of the arc surface block 56 to fix the end of the aramid tape. The end of the aramid tape fits against the arc surface, ensuring uniform force during stretching. The cooperation between the strip groove 59 and the convex strip 510 increases the firmness of the aramid tape fixation and ensures that it will not come off. Then, the up and down moving drive assembly 2 drives the tension sensor 3 to move upward. The tension sensor 3 stretches the aramid tape through the top fixing seat 4 and the push clamp 5. The stretching data is transmitted to the testing host 1 through the tension sensor 3.

[0022] In summary, this aramid tape tensile strength testing device works by having the end of the aramid tape pass through the threading opening 52 and adhere it to the surface of the arc-shaped block 56. Then, by rotating the threaded post 54, the threaded sleeve 55 moves the U-shaped clamp 53, causing the arc-shaped groove 57 of the U-shaped clamp 53 to adhere to the surface of the arc-shaped block 56, thus completely clamping the end of the aramid tape. The cooperation between the protrusion 510 and the groove 59 improves the firmness of the fixation. Next, the up-and-down moving drive assembly 2 moves the tension sensor 3, the fixing seat 4, and the top push-type clamp 5 upwards to perform a tensile test on the aramid tape. The end of the aramid tape adheres to the arc-shaped surface, ensuring uniform force distribution. This achieves the goal of completely clamping the end of the aramid tape using a threaded push-tightening method, ensuring uniform force distribution during aramid tape tension and guaranteeing the accuracy of the test results.

Claims

1. A device for testing the tensile strength of aramid sleeves used in rescue operations, characterized in that, The test unit includes a test host (1), on which a vertical movement drive assembly (2) is mounted. A tension sensor (3) is fixedly mounted on the front side of the lifting end of the vertical movement drive assembly (2). A fixed base (4) is fixedly mounted on both the bottom tension testing end of the tension sensor (3) and the top of the test host (1). A push-tightening clamp (5) is provided on the opposite side of each of the two fixed bases (4). The push-tightening clamp (5) includes a fixing block (51). A strapping opening (52) is provided on the top of the fixing block (51). A U-shaped clamp (53) is slidably connected to the surface of the fixing block (51). A threaded column (54) is rotatably connected to the front side of the fixing block (51). A threaded sleeve (55) is fixedly connected to the front side of the U-shaped clamp (53). The front end of the threaded column (54) passes through to the front side of the U-shaped clamp (53) and is threadedly connected to the threaded sleeve (55). An arc-shaped block (56) is fixedly connected to the opposite side of each of the two fixing blocks (51). An arc-shaped clamping groove (57) that matches the arc-shaped block (56) is opened at one end of the U-shaped clamp (53).

2. The tensile strength testing device for aramid sleeves used in rescue operations according to claim 1, characterized in that, Each of the two fixed blocks (51) is fixedly connected to a connecting frame (58) on the opposite side, and the connecting frame (58) is fixedly installed on the fixed base (4) by bolts.

3. The tensile strength testing device for aramid sleeves used in rescue operations according to claim 2, characterized in that, The surface of the arc block (56) is provided with a plurality of strip grooves (59), and a plurality of protrusions (510) that are adapted to the strip grooves (59) are fixedly connected to the inner wall of the arc clamping groove (57).

4. The tensile strength testing device for aramid sleeves used in rescue operations according to claim 3, characterized in that, A handwheel (511) is fixedly installed at the end of the threaded post (54) away from the fixed block (51).

5. The tensile strength testing device for aramid sleeves used in rescue operations according to claim 4, characterized in that, A rectangular cavity (512) is provided on one side of each of the two fixed blocks (51), and a rotating roller (513) is rotatably connected to both sides of the inner cavity of the rectangular cavity (512).

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