Anti-slip fixture for a tear resistance test of a waterproofing membrane

Abstract

The utility model discloses a waterproof volume tear resistance test antiskid clamp belongs to waterproof volume test clamp field, and the lower end of tension test subassembly is connected with upper clamp, and one end of the waterproof volume to be tested is clamped through upper clamp, the lower end middle part of base is equipped with lateral support, and the fixed type axle roller is installed between two lateral supports, and the slotted portion of lateral support is connected with movable roller shaft, and the upper end of each lateral support is installed with electric push rod, and electric push rod is connected with movable roller shaft through the limiting mechanism. Tension test subassembly can accurately record the tear strength in volume tear resistance test, and ensure that data is accurate and reliable. The upper clamp of its lower end increases the clamping force through the design of antiskid strip, prevents the sliding of volume, guarantees the test accuracy. The axle roller clamping mechanism utilizes fixed type axle roller, movable roller shaft and surface rubber antiskid sleeve to clamp waterproof volume, increases the clamping force, prevents the sliding, and ensures the stability and safety when volume tests.

Description

Technical Field

[0001] This utility model relates to the field of waterproof membrane testing fixtures, and in particular to an anti-slip fixture for waterproof membrane tear resistance testing. Background Technology

[0002] Waterproof membranes, as rollable sheet-like waterproof materials, are widely used in building walls, roofs, tunnels, highways, landfills, and other locations to resist the seepage of rainwater and groundwater. As a crucial link in the leak-proof connection between the foundation and the building, it constitutes the first line of defense for waterproofing and has a decisive impact on the overall waterproofing performance of the project. Based on their main constituent materials, waterproof membranes can be divided into three main categories: bitumen waterproof membranes, polymer-modified bitumen waterproof membranes, and synthetic polymer waterproof membranes. Waterproof membranes must possess excellent water resistance, good stability to temperature changes (including no flow, bubbling, or movement at high temperatures and no brittleness at low temperatures), certain mechanical strength, elongation, and fracture resistance, as well as necessary flexibility and aging resistance. Tear resistance testing equipment for waterproof membranes, as specialized equipment for evaluating the tear resistance of waterproof membranes, plays a vital role in practical applications.

[0003] In current tear resistance testing equipment for waterproof membranes, the design and use of clamps are crucial for effectively holding the membrane. Traditional methods often employ clamps and similar mechanisms to achieve effective clamping. However, a single clamp typically only holds a portion of the membrane, leading to wrinkles in other parts and hindering comprehensive and effective testing. Since the tear resistance of waterproof membranes must be tested in a fully unfolded, wrinkle-free state to ensure accurate results, the limitations of a single clamp cast doubt on the accuracy and reliability of the test results.

[0004] While using multiple clamps to hold waterproof membranes achieves complete clamping, it also introduces new challenges. Different sizes of waterproof membranes require clamps with varying spacing and dimensions. Therefore, when testing membranes of different sizes, the position and spacing of the clamps need frequent adjustments to accommodate the membrane's dimensions. This process is not only cumbersome but also time-consuming, reducing testing efficiency. Furthermore, disassembling and replacing the clamps requires certain technical skills and time, increasing operational complexity. Utility Model Content

[0005] The main purpose of this utility model is to provide an anti-slip clamp for the tear resistance test of waterproof membrane, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A waterproof membrane tear resistance test anti-slip fixture includes a base, a top seat, a support frame, a movable plate, a hydraulic cylinder, a movable frame, and a tensile testing component. The top seat and the base are respectively installed at the upper and lower ends of the support frame. The hydraulic cylinder is installed on the top seat. The telescopic end of the hydraulic cylinder is connected to the movable plate. The movable frame is provided at the four corners of the lower end of the movable plate, and the movable frame passes through the top seat and is connected to the tensile testing component.

[0008] The lower end of the tensile testing assembly is connected to an upper clamp, which clamps one end of the waterproof membrane to be tested.

[0009] A lateral support is provided at the lower middle of the base. A fixed roller is installed between the two lateral supports. A movable roller is connected to the slot of the lateral support. An electric push rod is installed at the upper end of each lateral support. The electric push rod is connected to the movable roller through a limiting mechanism and drives the movable roller to move onto the fixed roller. The waterproof membrane to be tested passes through the gap between the movable roller and the fixed roller and is clamped and fixed by the two, which facilitates the tear resistance test of the waterproof membrane to be tested.

[0010] In a further preferred embodiment, a detachable side seat is connected to the side wall notch of the base, and two opposing fixed seats are installed on the upper end of the detachable side seat, with a guide roller installed between the fixed seats;

[0011] In a further preferred embodiment, the detachable side seat is adapted to the notch of the base, and the openings at both ends of the detachable side seat face the support frame. Nuts and anti-slip washers on the support frame fix the detachable side seat to the base. Two fixed seats are fixed to the detachable side seat by bolts, and the guide roller is mounted on the fixed seats by bearings.

[0012] In a further preferred embodiment, the clamping end of the upper clamp is provided with an anti-slip strip, and the two lateral supports are symmetrically distributed on the base. The cross-section of the lateral supports is designed in an "L" shape and is fixed to the base by bolts.

[0013] In a further preferred embodiment, the movable roller shaft is provided with limiting bearing assemblies at both ends. The limiting bearing assembly includes a bearing seat, a T-hole, a limiting groove, and a bearing. The bearing is mounted on the bearing seat, the T-hole is located at the upper end of the bearing seat, and the limiting groove is located on the side wall of the bearing seat and is adapted to the slot of the lateral support to realize the limiting connection of the bearing seat. The telescopic end of the electric push rod is connected to a T-key by bolts, and the T-key is inserted into the T-hole.

[0014] In a further preferred embodiment, the fixed roller is mounted on a lateral support via a bearing assembly and bolts. Rubber anti-slip sleeves are fitted on the surfaces of the fixed roller and the movable roller. The waterproof membrane to be tested is clamped by the fixed roller, the movable roller, and the rubber anti-slip sleeves.

[0015] In a further preferred embodiment, the guide roller guides the waterproof membrane to be tested to the gap between the fixed roller and the movable roller, and then clamps it through the gap using an upper clamp.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The tensile testing assembly accurately records the tear strength of the roll material in tear resistance tests, ensuring the accuracy and reliability of the test data. The upper clamp connected to its lower end features an anti-slip strip design that increases clamping force, effectively preventing the roll material from slipping during the test and further guaranteeing the accuracy of the test.

[0018] The roller clamping mechanism uses a fixed roller and a movable roller, along with rubber anti-slip sleeves on their surfaces, to clamp the waterproof membrane to be tested. This not only increases the clamping force but also prevents the membrane from slipping, ensuring the stability and safety of the membrane during the test. The movable roller, precisely controlled by an electric push rod and a limit mechanism, can smoothly move onto the fixed roller to clamp and fix the membrane, making operation simple and highly efficient.

[0019] The roller clamping mechanism also features an adjustment function, allowing for adaptation to different roll material specifications. By adjusting the position of the detachable side seats and the distance between the movable roller and the fixed roller, it can accommodate roll materials of varying widths, improving the versatility and practicality of the clamp. Simultaneously, the guide roller design ensures smooth guidance of the roll material, guaranteeing accurate entry into the roller clamping mechanism for secure clamping, further enhancing the accuracy and efficiency of the test. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a test diagram of the overall structure of this utility model;

[0022] Figure 3 This is a front view of the overall structure of this utility model;

[0023] Figure 4 This is an exploded view of the base, side support, movable roller, fixed roller, detachable side seat, and guide roller of this utility model.

[0024] In the diagram: 1. Base; 2. Top seat; 3. Support frame; 4. Movable plate; 5. Hydraulic cylinder; 6. Movable frame; 7. Tensile test assembly; 8. Upper clamp; 9. Lateral bracket; 10. Electric push rod; 11. Movable roller; 12. Fixed roller; 13. Detachable side seat; 14. Fixed seat; 15. Guide roller. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] like Figure 1 - Figure 4 As shown, a tear resistance test fixture for waterproof membrane is disclosed. This fixture comprises multiple components to ensure the accuracy and safety of the test. The fixture mainly consists of a base 1, a top seat 2, a support frame 3, a movable plate 4, a hydraulic cylinder 5, a movable frame 6, and a tensile testing assembly 7. The top seat 2 and base 1 are fixedly mounted at the upper and lower ends of the support frame 3, respectively, to provide a stable support structure. The hydraulic cylinder 5 is mounted on the top seat 2, and its telescopic end is connected to the movable plate 4, allowing the movable plate 4 to move up and down as needed. Movable frames 6 are located at the four corners of the lower end of the movable plate 4. The movable frames 6 pass through the top seat 2 and are connected to the tensile testing assembly 7 to ensure the accuracy of the tensile test.

[0027] The lower end of the tensile testing assembly 7 is connected to an upper clamp 8, which is used to clamp one end of the waterproof membrane to be tested, ensuring the stability and accuracy of the membrane during the test. A lateral support 9 is provided at the middle of the lower end of the base 1, and a fixed roller 12 is installed between the two lateral supports 9 to provide a support point for the membrane as it passes through. A movable roller 11 is connected to the slot of the lateral support 9, and an electric push rod 10 is installed at the upper end of each lateral support 9. The electric push rod 10 is connected to the movable roller 11 through a limiting mechanism, and drives the movable roller 11 to move onto the fixed roller 12, allowing the waterproof membrane to pass smoothly through the gap between the movable roller 11 and the fixed roller 12, and be clamped and fixed by both, facilitating the tear resistance test.

[0028] A detachable side seat 13 is connected to the notch on the side wall of the base 1. Two opposing fixed seats 14 are installed on the upper end of the detachable side seat 13, and a guide roller 15 is installed between the fixed seats 14. The detachable side seat 13 is adapted to the notch of the base 1, and the openings at both ends of the detachable side seat 13 face the support frame 3. Nuts and anti-slip washers on the support frame 3 fix the detachable side seat 13 to the base 1. The two fixed seats 14 are fixed to the detachable side seat 13 by bolts. The guide roller 15 is installed on the fixed seats 14 by bearings to ensure the smoothness of the roll material during the guiding process.

[0029] The clamping end of the upper clamp 8 is equipped with anti-slip strips to increase clamping force and prevent the roll material from slipping during the test. Two lateral supports 9 are symmetrically distributed on the base 1. The cross-section of the lateral supports 9 is "L"-shaped and they are fixed to the base 1 with bolts to provide stable support. The two ends of the movable roller 11 are equipped with limit bearing assemblies. The limit bearing assembly includes a bearing seat, a T-hole, a limit groove, and a bearing. The bearing is mounted on the bearing seat. The T-hole is located at the upper end of the bearing seat, and the limit groove is located on the side wall of the bearing seat and is adapted to the slot of the lateral support 9 to realize the limit connection of the bearing seat. The telescopic end of the electric push rod 10 is connected to a T-key by bolts. The T-key is inserted into the T-hole to ensure the precise movement of the movable roller 11.

[0030] The fixed roller 12 is mounted on the lateral support 9 via bearing assemblies and bolts. Rubber anti-slip sleeves are fitted onto the surfaces of both the fixed roller 12 and the movable roller 11. The fixed roller 12, movable roller 11, and rubber anti-slip sleeves clamp the waterproof membrane to be tested, increasing clamping force and preventing slippage. The guide roller 15 guides the waterproof membrane to be tested through the gap between the fixed roller 12 and the movable roller 11, where it passes through the gap and is clamped by the upper clamp 8, ensuring the stability and accuracy of the membrane during the test.

[0031] One end of the waterproof membrane to be tested is guided by the guide roller 15 to the gap between the fixed roller 12 and the movable roller 11. Then, the electric push rod 10 is activated, which drives the movable roller 11 towards the fixed roller 12 through the limiting mechanism until the movable roller 11 and the fixed roller 12 clamp and fix the membrane. Next, the other end of the membrane is clamped in the upper clamp 8 to ensure the stability and accuracy of the membrane during the test. Subsequently, the hydraulic cylinder 5 is activated, causing the movable plate 4 to move the tensile testing assembly 7 and the upper clamp 8 downwards to begin the tear resistance test on the membrane. During the test, the tensile testing assembly 7 records the tear strength of the membrane.

[0032] During use, if it is necessary to adjust the clamp to accommodate different specifications of roll material, this can be achieved by adjusting the position of the detachable side seat 13 and the distance between the movable roller 11 and the fixed roller 12. First, loosen the nut and anti-slip washer on the detachable side seat 13, remove it from the notch in the base 1, and then reinstall it in the desired position, securing it with the nut and anti-slip washer. Next, by adjusting the extension length of the electric push rod 10, the position of the movable roller 11 is changed, thereby adjusting the distance between the movable roller 11 and the fixed roller 12 to accommodate roll material of different widths. After adjustment, restart the electric push rod 10 to clamp and fix the roll material with the movable roller 11 and the fixed roller 12 for testing. For more precise adjustments, the height of the guide roller 15 and the clamping force of the upper clamp 8 can also be adjusted.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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. Such 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 this utility model.

Claims

1. A waterproof membrane tear resistance test anti-slip clamp, comprising a base (1), a top seat (2), a support frame (3), a movable plate (4), a hydraulic cylinder (5), a movable frame (6), a tensile testing assembly (7), and a guide roller (15), wherein the top seat (2) and the base (1) are respectively installed at the upper and lower ends of the support frame (3), the hydraulic cylinder (5) is installed on the top seat (2), the telescopic end of the hydraulic cylinder (5) is connected to the movable plate (4), the movable frame (6) is provided at the four corners of the lower end of the movable plate (4), and the movable frame (6) passes through the top seat (2) and is connected to the tensile testing assembly (7), characterized in that: The lower end of the tensile testing assembly (7) is connected to an upper clamp (8), which clamps one end of the waterproof membrane to be tested. A lateral support (9) is provided at the middle of the lower end of the base (1). A fixed roller (12) is installed between the two lateral supports (9). A movable roller (11) is connected to the slot of the lateral support (9). An electric push rod (10) is installed at the upper end of each lateral support (9). The electric push rod (10) is connected to the movable roller (11) through a limiting mechanism and drives the movable roller (11) to move onto the fixed roller (12). The waterproof membrane to be tested passes through the gap between the movable roller (11) and the fixed roller (12) and is clamped and fixed by the two, which facilitates the tear resistance test operation of the waterproof membrane to be tested.

2. The anti-slip clamp for tear resistance testing of waterproof membrane according to claim 1, characterized in that: The base (1) has a detachable side seat (13) connected to the side wall notch, and two opposing fixed seats (14) are installed on the upper end of the detachable side seat (13), and a guide roller (15) is installed between the fixed seats (14).

3. The anti-slip clamp for tear resistance testing of waterproof membrane according to claim 2, characterized in that: The detachable side seat (13) is adapted to the notch of the base (1), and the openings at both ends of the detachable side seat (13) face the support frame (3). Nuts and anti-slip washers on the support frame (3) fix the detachable side seat (13) to the base (1). Two fixed seats (14) are fixed to the detachable side seat (13) by bolts. The guide roller (15) is installed on the fixed seat (14) by bearings.

4. A waterproof membrane tear resistance test anti-slip clamp according to claim 1 or 3, characterized in that: The clamping end of the upper clamp (8) is provided with anti-slip strips, and the two side brackets (9) are symmetrically distributed on the base (1). The cross-section of the side brackets (9) is "L" shaped and is fixed to the base (1) by bolts.

5. The anti-slip clamp for tear resistance testing of waterproof membrane according to claim 4, characterized in that: The movable roller (11) is provided with a limiting bearing assembly at both ends. The limiting bearing assembly includes a bearing seat, a T-hole, a limiting groove and a bearing. The bearing is installed on the bearing seat. The T-hole is located at the upper end of the bearing seat. The limiting groove is located on the side wall of the bearing seat and is adapted to the slot of the side bracket (9) to realize the limiting connection of the bearing seat. The telescopic end of the electric push rod (10) is connected to a T-key by bolts. The T-key is inserted into the T-hole.

6. The anti-slip clamp for tear resistance testing of waterproof membrane according to claim 5, characterized in that: The fixed roller (12) is mounted on the side bracket (9) by bearing assembly and bolts. The surfaces of the fixed roller (12) and the movable roller (11) are covered with rubber anti-slip sleeves. The waterproof roll to be tested is clamped by the fixed roller (12), the movable roller (11) and the rubber anti-slip sleeves.

7. The anti-slip clamp for tear resistance testing of waterproof membrane according to claim 6, characterized in that: The guide roller (15) guides the waterproof membrane to be tested to the gap between the fixed roller (12) and the movable roller (11), and then clamps it through the gap using the upper clamp (8).

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