Waterproof coiled material tension test device

Abstract

The utility model relates to the technical field of waterproof coiled material tension test, and discloses a waterproof coiled material tension test device which comprises a base, a clamp assembly and a clamping assembly, the clamp assembly comprises a supporting block arranged in a fixed seat, a sliding groove is formed in the inner wall of the fixed seat, a plurality of guide rods are arranged on the two sides of the sliding groove, and a sliding block is arranged at the other end of each guide rod; clamping teeth are arranged on the outer wall of the sliding block, a plurality of positioning grooves are formed in the two sides of the inner wall of the sliding groove, a plurality of cavities are formed in the inner walls of the positioning grooves, electromagnets and springs are arranged on the inner walls of the cavities, racks are arranged in the cavities, and a magnetic plate is arranged at one end of each rack. Pre-pulling can be carried out before a tension test through flexible sliding of the clamping plates, the clamping plates are driven to slide through axial pulling force during angle deviation so that the angles of the two ends of the waterproof roll can correspond, the positions of the clamping plates are locked through cooperation of the electromagnets and clamping teeth after angle correction, and the stability of the waterproof roll during the test is improved; and the accuracy of the tension test is ensured.

Description

Technical Field

[0001] This utility model relates to the field of tensile testing technology for waterproof membranes, specifically a tensile testing device for waterproof membranes. Background Technology

[0002] Waterproof membrane is a flexible building material product prefabricated in a factory with a fixed thickness. It can be rolled into rolls and is widely used in building waterproofing projects. Waterproof membrane can effectively prevent moisture from penetrating into the interior of the building structure, avoiding problems such as erosion, expansion, and cracking of walls, floors, and other structures due to long-term dampness, extending the service life of the building, and preventing the corrosive effects of chemicals in moisture on building components, thus improving the stability of the building structure.

[0003] Tensile testing of waterproof membranes is an important means of evaluating their mechanical properties. Through tensile testing, key performance parameters such as strength, toughness, and durability of waterproof membranes can be scientifically evaluated, thereby determining their reliability and applicability in actual use.

[0004] When conducting tensile tests on waterproof membranes, deviations in the installation angles at both ends can occur during the installation of the membrane and the clamps. This causes the centerline of the specimen's length direction to be misaligned with the center of the testing machine clamps, resulting in the specimen being subjected to an additional bending moment during the tensile process. Consequently, the specimen experiences not only axial tensile force but also bending stress during the tensile process, leading to inaccurate test results that fail to accurately reflect the true mechanical properties of the waterproof membrane. Utility Model Content

[0005] The purpose of this utility model is to provide a tensile testing device for waterproof membranes, so as to solve the problem mentioned in the background art that when waterproof membranes are installed with clamps, operational errors may cause deviations in the installation angles at both ends. During the tensile test, the angle deviation will generate axial tensile force, which will also lead to deviations in the test results and affect the accuracy of the test.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a waterproof membrane tensile testing device, comprising a base, a lifting frame provided inside the base, a fixing seat provided at the bottom of the lifting frame and on the inner wall of the base, a clamping assembly for clamping the waterproof membrane provided inside the fixing seat, the clamping assembly including a support block provided inside the fixing seat, and two clamping plates provided on the top of the support block;

[0007] The inner wall of the fixed base is provided with a sliding groove, and multiple guide rods are provided on both sides of the sliding groove. A slider is provided at the other end of each of the multiple guide rods. The outer wall of the slider is provided with locking teeth. Multiple positioning grooves are provided on both sides of the inner wall of the sliding groove. Multiple cavities are provided on the inner wall of each of the multiple positioning grooves. Electromagnets and springs are provided on the inner wall of each of the multiple cavities. A rack is provided inside the cavity, and a magnetic plate is provided at one end of the rack.

[0008] Preferably, the lifting frame is located inside the support frame above the base and is slidably connected to the inner wall of the support frame. Both fixed seats are connected to the inner wall of the base and the bottom of the lifting frame respectively by bolts, and the angles of the two fixed seats are corresponding.

[0009] Preferably, one end of the support block is embedded in a groove in the inner wall of the fixed seat and is slidably connected to the inner wall of the groove. The two clamping plates are distributed on both sides of the support block, and one of the clamping plates is slidably connected to the support block. A lead screw is installed between the two clamping plates, and the clamping plates are slidably driven by the rotation of the lead screw.

[0010] Preferably, the multiple guide rods are arrayed on both sides of the support block and connected to the outer wall of the support block. The other end of each guide rod extends into the positioning groove on the inner wall of the slide and connects to the slider.

[0011] Preferably, the plurality of positioning grooves correspond to the angle of the guide rod on the outer wall of the support block, the slider is slidably connected to the inner wall of the positioning groove, one end of the locking tooth is connected to the outer wall of the slider, and the other end abuts against the rack extending from the cavity.

[0012] Preferably, the plurality of cavity arrays are distributed on both sides of the inner wall of the positioning groove, the electromagnet is embedded and connected to the inner wall of the cavity, and is magnetically connected to the magnetic plate at one end of the rack, one end of the rack is located in the cavity and is slidably connected to the inner wall of the cavity, and the spring is located in the cavity, with both ends connected to the inner wall of the cavity and the rack respectively.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. After the clamping plate is fixed to the waterproof membrane, the support block at the bottom of the clamping plate can slide flexibly in the groove. During the tensile test, the pulling force can pull the support block to slide in the groove, so that the angle of the clamping plate on the lifting frame and the base is relative, ensuring that the waterproof membrane stays in a straight line during the tensile test and ensuring the stability of tensile force transmission.

[0015] 2. Before the tensile test begins, the electromagnet is de-energized. The spring supports the rack and the slider's outer wall abuts against the locking teeth. Therefore, the tensile force of the tensile test causes the support block to move in conjunction with the guide rod, which in turn drives the slider to slide in the positioning groove. This corrects the angle of the support block relative to the waterproof membrane. After the angle is positioned, the electromagnet is energized and repulses the magnetic plate, pushing the rack. This increases the pressure of the rack against the locking teeth, thereby locking the guide rod and support block in position and improving the stability of the clamping plate during the tensile test.

[0016] This invention allows for pre-stretching before tensile testing by flexibly sliding the clamping plates. The axial tension during angular deviation drives the clamping plates to slide, aligning the angles at both ends of the waterproof membrane. After angle correction, the clamping plates are locked in place by an electromagnet and engaging the locking teeth, improving the stability of the waterproof membrane during testing and ensuring the accuracy of the tensile test. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0018] Figure 2 This is an enlarged view of part A of this utility model;

[0019] Figure 3 This is an internal sectional view of the fixing base of this utility model;

[0020] Figure 4 This is an enlarged view of part B of this utility model.

[0021] In the diagram: 1. Base; 2. Lifting frame; 3. Fixed seat; 4. Support block; 401. Clamping plate; 5. Slide groove; 6. Guide rod; 601. Slider; 602. Clamping tooth; 7. Positioning groove; 8. Cavity; 801. Electromagnet; 802. Spring; 9. Rack; 901. Magnetic plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1: Please refer to Figures 1-4A tensile testing device for waterproof membrane includes a base 1, with a lifting frame 2 inside the base 1 that can slide and extend within the support frame of the base 1 to provide tensile force for tensile testing after the waterproof membrane is installed. A fixing seat 3 is provided at the bottom of the lifting frame 2 and on the inner wall of the base 1. A clamping assembly for holding the waterproof membrane is provided inside the fixing seat 3. The clamping assembly includes a support block 4 inside the fixing seat 3, which can mount a clamping plate 401. One end of the support block 4 extends into a sliding groove 5 inside the fixing seat 3, allowing the support block 4 to slide flexibly within the sliding groove 5. Two clamping plates 401 are provided on the top of the support block 4. Rotation of a screw can drive one clamping plate 401 to slide and cooperate with the other clamping plate 401 to hold the waterproof membrane.

[0024] In this embodiment: the waterproof membrane can be clamped and fixed by the clamping plate 401, and the support block 4 and the fixing seat 3 can slide flexibly through the sliding groove 5. Before the tensile test, pre-stretching is performed. When the waterproof membrane deviates at an angle, the axial tension drives the support block 4 to slide in the sliding groove 5, thereby correcting the position of the clamping plate 401 and keeping both ends of the waterproof membrane in a straight line.

[0025] Example 2: This example is an improvement on Example 1. For details, please refer to [link / reference]. Figures 1-4The inner wall of the fixed base 3 is provided with a sliding groove 5 for positioning the angle of the support block 4 during sliding. Multiple guide rods 6 are provided on both sides of the sliding groove 5. One end of each guide rod 6 is connected to the support block 4, and the other end extends into the positioning groove 7 on the inner wall of the sliding groove 5 and connects to the slider 601, allowing the slider 601 to work in conjunction with the guide rod 6 and the support block 4. The other end of each guide rod 6 is provided with a slider 601. The outer wall of the slider 601 is provided with locking teeth 602, which can engage with the rack 9 extending from the inner wall of the cavity 8 to position the slider 601 within the positioning groove 7. Multiple positioning grooves 7 are provided on both sides of the inner wall of the sliding groove 5 for positioning the angle of the slider 601 and the guide rod 6 during sliding. The inner wall of the groove 7 is provided with multiple cavities 8 for housing the rack 9 and positioning the rack 9 at its sliding angle. Each cavity 8 has an electromagnet 801 and a spring 802 installed on its inner wall. When energized, the electromagnet 801 generates magnetic poles that repel the magnetic plate 901, pushing the rack 9 out of the cavity 8 and engaging with the locking teeth 602 on the outside of the slider 601. The magnetic poles generated by the electromagnet 801 support the rack 9, and the magnetic poles, in conjunction with the slider 601 and guide rod 6, lock the position of the support block 4. When the waterproof membrane is pre-stretched, the electromagnet 801 is de-energized, and the spring 802 supports the rack 9, allowing the slider 601 to slide within the positioning groove 7 using the thrust of the support block 4. The support block 4 can slide flexibly within the groove 5. A rack 9 is installed inside the cavity 8, and a magnetic plate 901 is installed at one end of the rack 9. The lifting frame 2 is located in the support frame above the base 1 and is slidably connected to the inner wall of the support frame. Two fixed seats 3 are respectively connected to the inner wall of the base 1 and the bottom of the lifting frame 2 by bolts, and the two fixed seats 3 are angularly aligned. One end of the support block 4 is embedded in the groove 5 of the inner wall of the fixed seat 3 and is slidably connected to the inner wall of the groove 5. Two clamping plates 401 are distributed on both sides of the support block 4, and one of the clamping plates 401 is slidably connected to the support block 4. A screw rod is installed between the two clamping plates 401. The rotation of the screw rod drives the clamping plate 401 to slide. Multiple guide rods 6 are arrayed and distributed on the support block 4. On both sides, and connected to the outer wall of the support block 4, the other end of the guide rod 6 extends into the positioning groove 7 of the inner wall of the slide groove 5 and is connected to the slider 601. The multiple positioning grooves 7 correspond to the angle of the guide rod 6 on the outer wall of the support block 4. The slider 601 is slidably connected to the inner wall of the positioning groove 7. One end of the tooth 602 is connected to the outer wall of the slider 601, and the other end abuts against the rack 9 extending from the cavity 8. Multiple cavities 8 are arrayed on both sides of the inner wall of the positioning groove 7. The electromagnet 801 is embedded in the inner wall of the cavity 8 and is magnetically connected to the magnetic plate 901 at one end of the rack 9. One end of the rack 9 is located in the cavity 8 and is slidably connected to the inner wall of the cavity 8. The spring 802 is located in the cavity 8, and its two ends are connected to the inner wall of the cavity 8 and the rack 9, respectively.

[0026] In this embodiment: when the waterproof membrane is pre-stretched, the spring 802 provides a contact force between the rack 9 and the external locking teeth 602 of the slider 601. Since the spring 802 has a low supporting force, the support block 4 can slide flexibly in the groove 5, ensuring that the support block 4 can move to correct the angle during the pre-stretching process. After the waterproof membrane is angled, the electromagnet 801 is energized to generate magnetic poles, which repel the magnetic plate 901. The magnetic poles provide a supporting force between the rack 9 and the locking teeth 602. This, together with the slider 601 and the guide rod 6, locks the position of the support block 4, ensuring stability during the tensile test.

[0027] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tensile testing device for waterproof membrane, comprising a base (1), wherein a lifting frame (2) is provided inside the base (1), and a fixing seat (3) is provided at the bottom of the lifting frame (2) and on the inner wall of the base (1), wherein a clamping assembly for clamping the waterproof membrane is provided inside the fixing seat (3), characterized in that: The clamp assembly includes a support block (4) disposed inside the fixed base (3), and two clamping plates (401) are disposed on the top of the support block (4); The inner wall of the fixed base (3) is provided with a sliding groove (5), and multiple guide rods (6) are provided on both sides of the sliding groove (5). A slider (601) is provided at the other end of each of the multiple guide rods (6). A locking tooth (602) is provided on the outer wall of the slider (601). Multiple positioning grooves (7) are provided on both sides of the inner wall of the sliding groove (5). Multiple cavities (8) are provided on the inner wall of each of the multiple positioning grooves (7). An electromagnet (801) and a spring (802) are provided on the inner wall of each of the multiple cavities (8). A rack (9) is provided inside the cavity (8). A magnetic plate (901) is provided at one end of the rack (9).

2. The waterproof membrane tensile testing device according to claim 1, characterized in that: The lifting frame (2) is located in the support frame above the base (1) and is slidably connected to the inner wall of the support frame. The two fixed seats (3) are respectively connected to the inner wall of the base (1) and the bottom of the lifting frame (2) by bolts, and the angles of the two fixed seats (3) are corresponding.

3. The waterproof membrane tensile testing device according to claim 2, characterized in that: One end of the support block (4) is embedded in the groove (5) on the inner wall of the fixed seat (3) and is slidably connected to the inner wall of the groove (5). Two clamping plates (401) are distributed on both sides of the support block (4), and one of the clamping plates (401) is slidably connected to the support block (4). A screw is installed between the two clamping plates (401), and the clamping plate (401) is slidably driven by the rotation of the screw.

4. The waterproof membrane tensile testing device according to claim 1, characterized in that: Multiple guide rods (6) are arrayed on both sides of the support block (4) and connected to the outer wall of the support block (4). The other end of each guide rod (6) extends into the positioning groove (7) on the inner wall of the slide groove (5) and is connected to the slider (601).

5. The waterproof membrane tensile testing device according to claim 1, characterized in that: The multiple positioning grooves (7) correspond to the guide rods (6) on the outer wall of the support block (4) at different angles. The slider (601) is slidably connected to the inner wall of the positioning groove (7). One end of the locking tooth (602) is connected to the outer wall of the slider (601), and the other end abuts against the rack (9) extending from the cavity (8).

6. The waterproof membrane tensile testing device according to claim 1, characterized in that: Multiple cavities (8) are arrayed on both sides of the inner wall of the positioning groove (7). The electromagnet (801) is embedded and connected to the inner wall of the cavity (8) and magnetically connected to the magnetic plate (901) at one end of the rack (9). One end of the rack (9) is located in the cavity (8) and is slidably connected to the inner wall of the cavity (8). The spring (802) is located in the cavity (8) and its two ends are respectively connected to the inner wall of the cavity (8) and the rack (9).

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