A cylindrical test specimen clamp apparatus for use in a rebound hammer test

Abstract

The utility model relates to a kind of cylindrical test piece clamp device for rebound tester test, including workbench, fixed column and adjusting column, the fixed column lower end is fixedly connected on workbench, the fixed column upper end is hinged with adjusting column lower end, adjusting column is equipped with the fixture assembly for clamping cylindrical test piece;The fixture assembly includes the first clamping seat and second clamping seat for cooperating clamping cylindrical test piece, the first clamping seat is connected on adjusting column, the second clamping seat is connected with the first clamping seat by bolt, first clamping seat and second clamping seat side setting have open opposite arc limit slot.The utility model is used for the cylindrical test piece clamp device for rebound tester test, novel structure, reasonable in design, can realize the efficient stable clamping of cylindrical test piece, it is convenient and fast to use, and can flexibly adjust test angle, it is favorable to quickly accurate completion of the rebound test of cylindrical test piece, provide reliable test guarantee for the construction non-vertical area building material measurement strength curve.

Description

Technical Field

[0001] This utility model relates to the field of building material testing technology, and in particular to a cylindrical specimen clamping device for rebound hammer testing. Background Technology

[0002] The basic principle of the rebound method is to indirectly measure material strength by using a rebound hammer to impact the surface of the test area and measuring the rebound value. However, when conducting rebound tests on non-vertical structures such as dams and arch bridges, the test angle can cause deviations in the test data due to forces such as gravity, thus affecting the judgment of the material's true strength. Current specifications only provide loading and fixing methods for cubes, and there are no fixtures for adjusting the angle and positioning of cylindrical specimens. General fixtures cannot simultaneously meet the requirements for adjusting the angle and positioning of cylindrical specimens. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a cylindrical specimen clamping device for rebound test, which can conveniently and quickly achieve efficient and stable clamping of cylindrical specimens and flexibly adjust the test angle.

[0004] This utility model is implemented using the following scheme: a cylindrical specimen clamping device for rebound tester testing, including a worktable, a fixed column and an adjusting column. The lower end of the fixed column is fixedly connected to the worktable, and the upper end of the fixed column is hinged to the lower end of the adjusting column. The adjusting column is provided with a clamping assembly for clamping the cylindrical specimen. The clamping assembly includes a first clamp and a second clamp for cooperating to clamp the cylindrical specimen. The first clamp is connected to the adjusting column, and the second clamp is connected to the first clamp by bolts. The first clamp and the second clamp are provided with arc-shaped limiting grooves with opposite openings on opposite sides.

[0005] Furthermore, the first clamp is provided with a through groove that runs through its upper and lower sides. The first clamp is sleeved on the adjusting column using the through groove and can slide relative to the adjusting column. A first threaded hole that runs through the through groove is provided on the side of the first clamp. A first locking bolt is provided in the first threaded hole, and the rod end of the first locking bolt abuts against the side of the adjusting column.

[0006] Furthermore, the lower end of the adjusting column is symmetrically fixedly connected with two rings on both sides, and the upper end of the fixed column is symmetrically fixedly connected with two circular fasteners on both sides. The rings are sleeved on the outside of the circular fasteners on the same side and can rotate relative to each other around the axis of the circular fasteners.

[0007] Furthermore, the outer periphery of the ring is provided with a second threaded hole that penetrates the inner side, and a second locking bolt is provided in the second threaded hole, with the end of the second locking bolt abutting against the outer side of the circular fixing part.

[0008] Furthermore, the lower end of the adjusting column is provided with a downwardly protruding semi-circular part, and the upper end of the fixed column is provided with an arc-shaped groove that matches the semi-circular part. The axis of the semi-circular part coincides with the center line of the two circular rings.

[0009] Furthermore, the circular fixing member is provided with scale markings, and the ring is provided with directional markings.

[0010] Compared with the prior art, the present invention has the following advantages: The cylindrical specimen clamping device for rebound testing of the present invention has a novel structure and reasonable design, which can achieve efficient and stable clamping of cylindrical specimens, is convenient and quick to use, and can flexibly adjust the testing angle, which is conducive to quickly and accurately completing the rebound test of cylindrical specimens, and provides a reliable test guarantee for constructing the strength curve of building materials in non-vertical areas.

[0011] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through specific embodiments and related drawings. Attached Figure Description

[0012] Figure 1 This is a perspective view of one embodiment of the present utility model; Figure 2 This is another perspective view of an embodiment of the present utility model; Figure 3 This is a partial view of the clamp assembly according to an embodiment of the present utility model; Figure 4 This is a side view of the hinge joint between the fixed column and the adjusting column in an embodiment of this utility model; Figure 5 yes Figure 4 The left view; Figure 6 yes Figure 5 Sectional view of AA; Explanation of the labels in the diagram: 100-Workbench, 110-Mounting hole, 200-Fixed column, 210-Circular fastener, 211-Scale mark, 220-Arc groove, 300-Adjusting column, 310-Ring, 311-Second locking bolt, 312-Pointing mark, 320-Semi-circular part, 400-Clamp assembly, 410-First clamp, 411-Through groove, 420-Second clamp, 430-Arc limiting groove. Detailed Implementation

[0013] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0014] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0015] like Figures 1-6 As shown, a cylindrical specimen clamping device for rebound testing includes a worktable 100, a fixed column 200, and an adjusting column 300. The lower end of the fixed column 200 is fixedly connected to the worktable 100, and the upper end of the fixed column 200 is hinged to the lower end of the adjusting column 300. The adjusting column is provided with a clamping assembly 400 for clamping the cylindrical specimen. The clamping assembly includes a first clamp 410 and a second clamp 420 for cooperating to clamp the cylindrical specimen. The first clamp is connected to the adjusting column, and the second clamp is connected to the first clamp by bolts. The first clamp and the second clamp are provided with arc-shaped limiting grooves 430 with opposite openings on opposite sides.

[0016] Cylindrical specimens are clamped onto the fixture assembly, and the clamping or loosening of the cylindrical specimens is achieved by bolts on the fixture assembly. The lower end of the adjusting column is hinged to the upper end of the fixed column, allowing the adjusting column to swing left and right to adjust the angle. This enables efficient and stable clamping of cylindrical specimens, is convenient and quick to use, and allows for flexible adjustment of the test angle. It is beneficial for quickly and accurately completing the rebound test of cylindrical specimens, providing reliable experimental support for constructing strength curves of building materials in non-vertical areas. The fixture assembly consists of two clamps with arc-shaped limiting grooves, connected by bolts, ensuring stable clamping of cylindrical specimens of various sizes. This improves the versatility and applicability of the equipment, simplifies the operation process, and is suitable for fields such as the evaluation of mechanical properties of building materials.

[0017] In this embodiment, the first clamp 410 is provided with a through groove 411 that runs through its upper and lower sides. The first clamp is sleeved on the adjusting column by the through groove and can slide relative to the adjusting column. The side of the first clamp is provided with a first threaded hole that runs through the through groove. A first locking bolt is provided in the first threaded hole. The rod end of the first locking bolt abuts against the side of the adjusting column.

[0018] In this embodiment, circular rings 310 are symmetrically fixedly connected to both sides of the lower end of the adjusting column 300, and circular fixing members 210 are symmetrically fixedly connected to both sides of the upper end of the fixed column 200. The circular rings are sleeved on the outside of the circular fixing members on the same side and can rotate relative to each other around the axis of the circular fixing members. The rotational engagement of the circular fixing members 210 and the circular rings 310 realizes the hinged connection between the adjusting column and the fixed column. The circular fixing members 210 and the circular rings 310 are arranged in pairs, which can reduce the influence of external vibration and improve the stability during the test.

[0019] In this embodiment, a second threaded hole penetrating the inner surface of the outer periphery of the ring is provided, and a second locking bolt 311 is provided in the second threaded hole. The end of the second locking bolt abuts against the outer surface of the circular fixing member. By tightening the second locking bolt 311, the ring can be fixed to limit its rotation, thereby fixing the angle of the adjusting column. The second locking bolts 311 can be arranged in pairs on both sides of the ring to improve the locking force and stability.

[0020] In this embodiment, the lower end of the adjusting column has a downwardly protruding semi-circular portion 320, and the upper end of the fixed column has an arc-shaped groove 220 that matches the semi-circular portion. The axis of the semi-circular portion coincides with the center lines of the two circular rings. The cooperation between the semi-circular portion 320 and the arc-shaped groove 220 provides auxiliary support and can improve the stability of the hinged part.

[0021] In this embodiment, the circular fixing member 210 is provided with a scale mark 211, and the ring is provided with a pointing mark 312. The scale marked by the pointing mark 312 is the angle of the swing of the adjusting column, so that the angle of the adjusting column can be observed more intuitively without the need for manual measurement, making it convenient to use.

[0022] In this embodiment, the workbench is rectangular, and four mounting holes 110 are provided at the four corners of the workbench. This facilitates the stable fixing of the workpiece to the ground or base, ensuring stability throughout the testing process.

[0023] In this embodiment, the arc-shaped limiting grooves of the first clamp and the second clamp are provided with an anti-slip material layer, such as a rubber pad, to increase friction and prevent the specimen from sliding or vibrating.

[0024] Unless otherwise stated, if any of the technical solutions disclosed in this utility model discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this utility model discloses only some numerical values ​​to illustrate the technical solutions of this utility model. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this utility model.

[0025] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured by integral molding using a casting process) (except where it is obviously impossible to use an integral molding process).

[0026] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0027] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A cylindrical specimen clamping device for rebound hammer testing, characterized in that: The device includes a workbench, a fixed column, and an adjusting column. The lower end of the fixed column is fixedly connected to the workbench, and the upper end of the fixed column is hinged to the lower end of the adjusting column. The adjusting column is provided with a clamping assembly for clamping cylindrical specimens. The clamping assembly includes a first clamp and a second clamp for clamping the cylindrical specimens. The first clamp is connected to the adjusting column, and the second clamp is connected to the first clamp by bolts. The first clamp and the second clamp are provided with arc-shaped limiting grooves with opposite openings on opposite sides.

2. The cylindrical specimen clamping device for rebound testing according to claim 1, characterized in that: The first clamp is provided with a through groove that runs through its upper and lower sides. The first clamp is sleeved on the adjusting column using the through groove and can slide relative to the adjusting column. The first clamp is provided with a first threaded hole that runs through the through groove on its side. A first locking bolt is provided in the first threaded hole. The rod end of the first locking bolt abuts against the side of the adjusting column.

3. The cylindrical specimen clamping device for rebound testing according to claim 1, characterized in that: The lower end of the adjusting column is symmetrically fixed with rings on both sides, and the upper end of the fixed column is symmetrically fixed with circular fasteners on both sides. The rings are sleeved on the outside of the circular fasteners on the same side and can rotate relative to each other around the axis of the circular fasteners.

4. The cylindrical specimen clamping device for rebound testing according to claim 3, characterized in that: The outer periphery of the ring is provided with a second threaded hole that passes through the inner side. A second locking bolt is provided in the second threaded hole, and the end of the second locking bolt abuts against the outer side of the circular fixing part.

5. The cylindrical specimen clamping device for rebound testing according to claim 4, characterized in that: The lower end of the adjusting column is provided with a downwardly protruding semi-circular part, and the upper end of the fixed column is provided with an arc-shaped groove that matches the semi-circular part. The axis of the semi-circular part coincides with the center line of the two circular rings.

6. The cylindrical specimen clamping device for rebound testing according to claim 4, characterized in that: The circular fastener has scale markings, and the ring has directional markings.

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