Fixture for longitudinal shear test of broken bridge aluminum profile

Abstract

The utility model discloses a broken bridge aluminum profile longitudinal shear test clamp, which comprises a box body, a clamping assembly and a pulling assembly, the box body comprises a bottom panel, an upper panel, a lower panel, a left panel and a right panel, the center position of the upper side surface of the upper panel is connected with an upper hanging ring, and the center position of the lower panel is provided with a through hole; the clamping assembly comprises a support arranged on the lower portion of the left side in the box body, a threaded hole is formed in the left side of the upper panel, a ball head screw with the ball head end facing downwards is installed on the threaded hole, and the ball head end of the ball head screw is connected with the top plate through a ball head seat. The pulling assembly comprises a plate-type hook arranged on the right side in the box body, the plate-type hook is lower than an inner cavity of the box body, a 3-10 cm space allowing the plate-type hook to move up and down is reserved, a pull rod is arranged in the through hole, the upper end of the pull rod is connected with the plate-type hook, and the lower end of the pull rod is connected with a lower hanging ring. The device is simple in structure, convenient to use, firm in clamping and accurate in detection data.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering quality detection equipment, in particular to a longitudinal shear test fixture for a broken bridge aluminum profile. Background Art

[0002] Thermal break aluminum, also known as thermal insulation aluminum, thermal insulation aluminum alloy, or thermally insulated aluminum alloy, consists of aluminum on both sides, with a plastic profile in the middle as the insulation. Currently, thermal break aluminum profiles are widely used in door and window construction. Choosing thermal break aluminum profiles is crucial for door and window construction, and their shear resistance is a key quality indicator, typically tested through tensile testing. The method for testing the shear resistance of thermal break aluminum profiles includes the following steps: (1) Sample selection: Cut a specified length of thermal break aluminum profile specimen from the batch of products to be tested, and ensure that the sample can represent the overall performance of the batch of products; (2) Clamp selection: Select a suitable clamp to simulate the tensile force that may be encountered in actual use and ensure that the connection is firm; (3) Install the specimen: Install the specimen on the clamp and check whether the connection is firm; (4) Apply tension: Apply tension to the specimen gradually according to the test rate and load specified in the relevant standards; (5) Observe and record: During the test, observe the changes in the specimen and record the relevant data; (6) Result judgment: Based on the test results, judge whether the shear force of the specimen meets the requirements. In the existing technology, there is a lack of a longitudinal shear test fixture for thermal break aluminum profiles that is easy to use, securely clamped, and can ensure accurate and reliable test data. Utility Model Content

[0003] The purpose of the utility model is to solve the above-mentioned problems of the prior art and to provide a longitudinal shear test fixture for thermally broken aluminum profiles, which has the advantages of simple structure, convenient use, reliable clamping and accurate detection data.

[0004] The technical solution adopted by the present invention is: a longitudinal shear test fixture for thermally broken aluminum profiles, which includes a box body, a clamping assembly and a pulling assembly; the box body includes a bottom panel, an upper panel, a lower panel, a left panel and a right panel, the center position of the upper side of the upper panel is connected to the upper hanging ring, and the center position of the lower panel is provided with a through hole; the clamping assembly includes a support provided at the lower left part of the box body, a threaded hole is provided on the left side of the upper panel, a ball screw with the ball head facing downward is installed on the threaded hole, and the ball head end of the ball screw is connected to the top plate through the ball head seat; the pulling assembly includes a plate hook provided on the right side of the box body, the height of the plate hook is shorter than the height of the inner cavity of the box body, leaving 3-10 cm of space for the plate hook to move up and down, a pull rod is provided in the through hole, the upper end of the pull rod is connected to the plate hook, and the lower end of the pull rod is connected to the lower hanging ring.

[0005] Preferably, the plate-type hook comprises a right-angled trapezoidal plate with an acute lower left corner disposed on the bottom panel. The upper base of the right-angled trapezoidal plate is connected to the upper square plate, the lower base of the right-angled trapezoidal plate is connected to the lower square plate, the right side of the right-angled trapezoidal plate is connected to the side square plate, and the upper end of the pull rod is connected to the left side of the lower square plate. This preferred technical solution has the following beneficial effects: high tensile strength, ensuring that the centerline of the pulling force is parallel to the centerline of the thermally broken aluminum profile specimen, and after applying a pulling force to the thermally broken aluminum profile specimen, the thermally broken aluminum profile specimen will not rotate or tilt, and the test data is accurate.

[0006] Preferably, the support is an L-shaped plate, the side of the L-shaped plate is connected to the bottom panel, one end of the L-shaped plate is connected to the left panel, and the other end of the L-shaped plate is connected to the lower panel. The advantageous effects of this preferred technical solution are: it has a simple structure, light weight, and high support strength.

[0007] Preferably, the through hole is a non-circular hole, the cross-section of the pull rod is the same shape as the non-circular hole, and a gap is left between the pull rod and the non-circular hole to allow the pull rod to slide up and down. The non-circular hole can be a square hole, a regular polygonal hole, an elliptical hole, etc. The advantageous effect of this preferred technical solution is that it prevents the pull rod and the plate hook from rotating.

[0008] Preferably, a handle for rotating the ball screw is provided at the upper end of the ball screw.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] (1) The center of the upper side of the upper panel of the utility model is connected to the upper lifting ring, and the center of the lower panel is provided with a through hole; a pull rod is provided in the through hole, the upper end of the pull rod is connected to the plate hook, and the lower end of the pull rod is connected to the lower lifting ring. This design ensures that when performing a tensile test, the traction line pulling the upper and lower lifting rings is parallel to the center line of the thermal break aluminum profile, so that the traction force is truly equal to the longitudinal shear force of the thermal break aluminum profile, and the test data is accurate.

[0011] (2) The utility model has a simple structure, low cost, easy use, firm clamping, and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a three-dimensional structural diagram of the utility model of the longitudinal shear test fixture for the broken bridge aluminum profile;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the box body of the utility model;

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the pulling assembly of the utility model;

[0015] Figure 4 It is a schematic diagram of the three-dimensional structure of the broken bridge aluminum profile specimen;

[0016] Figure 5 It is a three-dimensional structural schematic diagram of the clamped thermal break aluminum profile test piece of the utility model.

[0017] In the figure: 1-bottom panel, 2-upper panel, 3-lower panel, 4-left panel, 5-right panel, 6-upper lifting ring, 7-through hole, 8-L-shaped plate, 9-threaded hole, 10-ball screw, 11-ball seat, 12-top plate, 13-right-angled trapezoidal plate, 14-upper square plate, 15-lower square plate, 16-side square plate, 17-pull rod, 18-lower lifting ring, 19-handle, 20-left aluminum profile, 21-right aluminum profile, 22-plastic profile. DETAILED DESCRIPTION

[0018] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0019] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the ordinary meanings understood by those skilled in the art to which this utility model belongs. In the description of this application, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting this utility model.

[0020] Example: Figures 1 to 5As shown, a longitudinal shear test fixture for a broken bridge aluminum profile is provided, which includes a box body, a clamping assembly and a pulling assembly. The box body includes a bottom panel 1, an upper panel 2, a lower panel 3, a left panel 4 and a right panel 5. The center position of the upper side surface of the upper panel 2 is connected to a hanging ring 6, and the center position of the lower panel 3 is provided with a non-circular through hole 7; the clamping assembly includes an L-shaped plate 8 provided at the lower left part of the box body, the side surface of the L-shaped plate 8 is connected to the bottom panel 1, one end of the L-shaped plate 8 is connected to the left panel 4, and the other end of the L-shaped plate 8 is connected to the lower panel 3. A threaded hole 9 is provided on the left side of the upper panel 2, and a ball screw 10 with the ball head end facing downward is installed on the threaded hole 9, and the ball head end of the ball screw 10 is connected to the top plate 12 through the ball head seat 11; the pulling assembly includes A plate hook is arranged on the right side of the box body. The height of the plate hook is lower than the height of the inner cavity of the box body, leaving 8 cm of space for the plate hook to move up and down. The plate hook includes a right-angled trapezoidal plate 13 with an acute angle at the lower left corner arranged on the bottom panel, the upper bottom edge of the right-angled trapezoidal plate 13 is connected to the upper square plate 14, the lower bottom edge of the right-angled trapezoidal plate 13 is connected to the lower square plate 15, and the right side of the right-angled trapezoidal plate 13 is connected to the side square plate 16. A pull rod 17 is arranged in the through hole 7. The cross section of the pull rod 17 is the same as the shape of the non-circular through hole 7. A gap is left between the pull rod 17 and the non-circular through hole 7 to allow the pull rod 17 to slide up and down; the upper end of the pull rod 17 is connected to the left side of the lower square plate 15, and the lower end of the pull rod 17 is connected to the lower hanging ring 18.

[0021] The method of using the utility model comprises the following steps:

[0022] (1) Sample selection: Cut a specified length of thermal break aluminum profile specimen from the batch of products to be inspected. The thermal break aluminum profile specimen includes a left aluminum profile 20, a right aluminum profile 21, and a plastic profile 22 connecting the left aluminum profile 20 and the right aluminum profile 21;

[0023] (2) Install the test specimen: Place the left aluminum profile 20 of the thermal break aluminum profile specimen between the L-shaped plate 8 and the top plate 12, hold the handle 19 and rotate the ball screw 10 to move the top plate 12 downward, and clamp the thermal break aluminum profile specimen between the L-shaped plate 8 and the top plate 12; press the upper square plate 14 of the plate hook onto the upper end of the right aluminum profile 21 of the thermal break aluminum profile specimen;

[0024] (3) Applying tension: Connect the upper lifting ring 6 and the lower lifting ring 18 to the tension tester, and gradually apply tension to the specimen according to the test rate and load specified in the relevant standards;

[0025] (5) Observation and recording: During the test, observe the changes in the specimen and record the relevant data;

[0026] (6) Result judgment: Based on the test results, determine whether the shear force of the specimen meets the requirements.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the various embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A longitudinal shear test fixture for a thermally broken aluminum profile, comprising a box body, a clamping assembly and a pulling assembly, wherein the box body comprises a bottom panel, an upper panel, a lower panel, a left panel and a right panel, the center position of the upper side of the upper panel is connected to the upper hanging ring, and the center position of the lower panel is provided with a through hole; the clamping assembly comprises a support arranged at the lower left part of the box body, a threaded hole is provided on the left side of the upper panel, a ball screw with the ball head facing downward is installed on the threaded hole, and the ball head end of the ball screw is connected to the top plate through the ball head seat; the pulling assembly comprises a plate hook arranged on the right side of the box body, the height of the plate hook is shorter than the height of the inner cavity of the box body, leaving 3-10 cm of space for the plate hook to move up and down, a pull rod is provided in the through hole, the upper end of the pull rod is connected to the plate hook, and the lower end of the pull rod is connected to the lower hanging ring.

2. The longitudinal shear test fixture for thermally broken aluminum profiles according to claim 1, characterized in that: The plate-type hook includes a right-angled trapezoidal plate with an acute lower left corner set on the bottom panel, the upper bottom edge of the right-angled trapezoidal plate is connected to the upper square plate, the lower bottom edge of the right-angled trapezoidal plate is connected to the lower square plate, the right side of the right-angled trapezoidal plate is connected to the side square plate, and the upper end of the pull rod is connected to the left side of the lower square plate.

3. The longitudinal shear test fixture for thermally broken aluminum profiles according to claim 2, characterized in that: The support is an L-shaped plate, the side surface of the L-shaped plate is connected to the bottom panel, one end of the L-shaped plate is connected to the left panel, and the other end of the L-shaped plate is connected to the lower panel.

4. The longitudinal shear test fixture for thermally broken aluminum profiles according to claim 3, characterized in that: The through hole is a non-circular hole. The cross section of the pull rod has the same shape as the non-circular hole. A gap is left between the pull rod and the non-circular hole to allow the pull rod to slide up and down.

5. The longitudinal shear test fixture for thermally broken aluminum profiles according to claim 4, characterized in that: The upper end of the ball screw is provided with a handle for rotating the ball screw.

Images