A stable variable combination support for structural testing

Abstract

This utility model discloses a stable variable combination support for structural experiments, including a base, with the bottom of the base fixedly installed on an experimental platform, and also including a support platform and a central shaft. The support platform is placed in a groove in the base, and the central shaft passes through the base and the support platform. A through groove is provided on the support platform, through which the central shaft passes through the support platform. The base specifically includes two forms: a circular base and a sliding base. The support platform includes two forms: a triangular support platform and a square support platform. For the two forms of the base, a variable base and a support platform are combined to realize the quick combination of different boundary conditions such as roller support, hinge support, sliding support, and fixed support based on a simple structure, so as to solve the problem that it is not convenient to change the boundary conditions in beam structure experiments.

Description

Technical Field

[0001] This utility model belongs to the field of structural experiment technology, and specifically relates to a stable variable combination support for structural experiments. Background Technology

[0002] Beam structures are a fundamental and crucial component of engineering, particularly in civil engineering, mechanical engineering, and materials science. In laboratory settings, beam structures are frequently used to perform various mechanical property tests, such as bending strength, stiffness, and fatigue life, to evaluate the performance of different materials or designs. Beam structure boundary conditions can be categorized into roller supports, hinged supports, sliding supports, and fixed supports, depending on the number of constraints. Different boundary conditions lead to different test results. However, existing experimental models often cannot modify the boundary conditions; therefore, finding a simple structural and quick way to change the support type becomes an important issue. Utility Model Content

[0003] The purpose of this invention is to provide a stable variable combination support for structural experiments to solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a stable variable combination support for structural experiments, including a base, with the bottom of the base fixedly installed on an experimental platform, and also including a support platform and a central shaft. The support platform is placed in a groove in the base, and the central shaft passes through the base and the support platform. A through groove is provided on the support platform, and the central shaft passes through the support platform through the through groove.

[0005] Preferably, the base specifically includes two forms: a circular base and a sliding base, and the support platform includes two forms: a triangular support platform and a trapezoidal support platform, corresponding to the two forms of the base.

[0006] Preferably, the through groove includes a mounting groove opened inside the base. The mounting groove is provided with two movable frames, and the two movable frames are fixed to form a circular base. When the fixed frame is removed, a sliding base is formed. The movable frames are fixed by forward magnets on both sides of the mounting groove. The support platform includes a platform and an extension body. Adjustable components are movably provided on both sides of the extension body. The bottom horizontal plane of the adjustable component is on the same horizontal plane as the lowest point of the arc in the middle of the extension body. Magnets are also provided on the top of both sides of the extension body for fixing the adjustable component after rotating 180 degrees.

[0007] Preferably, the portion of the support extending into the base and the platform portion supporting the experimental rod are both placed in the groove in the middle of the base, with the latter portion resting inside the base and the latter portion used to support the end of the experimental rod.

[0008] Preferably, the base is fixed to the experimental platform, and the support platform is fixedly connected to the bottom part of the experimental rod.

[0009] The technical effects and advantages of this utility model are as follows: By combining a variable base and a support platform, different boundary conditions such as roller support, hinge support, sliding support, and fixed support can be quickly formed based on a simple structure, so as to solve the problem that it is not convenient to change the boundary conditions in beam structure experiments. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 The following are schematic diagrams of the structures in Embodiment 1 and Embodiment 2 of this utility model. Figure 1 ; Figure 3 The following are schematic diagrams of the structures in Embodiment 1 and Embodiment 2 of this utility model. Figure 2 ; Figure 4 This is a schematic diagram of the structure in Embodiment 3 of this utility model; Figure 5 This is a schematic diagram of the internal structure in Embodiment 3 of this utility model; Figure 6 This is a schematic diagram of the support structure in Embodiment 3 of this utility model; Figure 7 This is an experimental schematic diagram of the present invention, wherein (1) is a front view and (2) is a perspective view.

[0011] In the diagram: 1. Base; 2. Support platform; 201. Platform; 202. Extension body; 203. Magnet II; 204. Adjustment component; 3. Central shaft; 4. Through slot; 5. Moving frame; 6. Mounting slot. Detailed Implementation

[0012] 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.

[0013] This utility model provides a stable variable combination support for structural experiments as shown in the figure, including a base 1, the bottom of which is fixedly installed on the experimental platform, and also includes a support platform 2 and a central shaft 3. The support platform 2 is placed in the groove of the base, and the central shaft 3 passes through the base 1 and the support platform 2. A through groove 4 is provided on the support platform 2, and the central shaft 3 passes through the support platform 2 through the through groove 4.

[0014] Specifically, base 1 includes two forms: a circular base and a sliding base, and platform 2 includes two forms: a triangular platform and a trapezoidal platform, corresponding to the two forms of base 1.

[0015] Specifically, the through groove 4 includes an installation groove 6 opened inside the base 1. The installation groove 6 is provided with two movable frames 5, and the two movable frames 5 are fixed to form a circular base. When the two movable frames 5 are removed, a sliding base is formed, and the installation groove 6 fixes the movable frames 5. The support platform 2 includes a platform 201 and an extension body 202. Adjustable parts 204 are movably provided on both sides of the extension body 202, and the bottom horizontal plane of the adjustable parts 204 is on the same horizontal plane as the lowest point of the arc in the middle of the extension body 202. Magnets 203 are also provided on the top of both sides of the extension body 202 to fix the adjustable parts 204 after rotating 180 degrees.

[0016] Specifically, the part of the base 2 that extends into the base 1 and the platform part that supports the experimental rod are both placed in the groove in the middle of the base 1. The platform part is used to support the end of the experimental rod.

[0017] Specifically, base 1 is fixed to the experimental platform, and platform 2 is fixedly connected to the bottom of the experimental rod.

[0018] Working principle: Example 1 Reference Appendix Figure 1 , 2 3 Figure 7 This application discloses a stable variable combination support for structural experiments, comprising a base, including a circular base and b sliding base; a support platform, including c triangular support platform and d trapezoidal support platform; and a shaft. The lower part of the base 1 is fixed to the experimental platform; the support platform 2 is correspondingly placed within the groove of the base 1; and the central shaft 3 passes through the holes in the base 1 and the support platform 2, connecting and fixing the two. In use, the base, support platform, and shaft are assembled, and lubricating oil is applied to each contact point of the components to minimize the impact of friction.

[0019] This invention provides a stable variable combination support for structural experiments. By changing the support type through combination, it can simulate a roller support (i.e., Figure 2 Combination style 1) Hinge support (i.e. Figure 2 Combination style 2), sliding support (i.e. Figure 2 Combination style 3), fixed support (i.e. Figure 2 The combination style 4) and other support forms are simple in structure and quick to operate. Example 2:

[0020] Based on the above embodiment one, as Figure 4As shown, this embodiment provides a combined form of a simply supported beam. Both ends of the beam structure are fixedly placed on the bearing platforms of two combinable supports of this invention. The boundary conditions are: the left end is a roller bearing, and the right end is a hinged bearing. The left-end roller bearing is constructed by selecting a sliding groove base (i.e.... Figure 3 (1) The middle (slide base) is combined with the triangular support; its right end hinge support is formed by selecting a circular base (i.e. Figure 3 (1) The circular base and the triangular support (i.e. Figure 3 (2) is composed of triangular foundations. For example... Figure 4 As shown, other support types can also be used to create other boundary conditions, including: through a circular base and a trapezoidal platform (i.e., Figure 3 (2) The trapezoidal base in the combination can form a fixed support; the combination of the sliding base and the trapezoidal base can form a sliding support; Example 3: By setting up platform 201, extension body 202 and magnet 203 in the support 2, the entire structure in Example 1 and Example 2 can be made more suitable for experimental scenarios, convenient to operate and consistent in state. The setting of the round hole and the sliding groove, through the setting of the movable frame 5 and the mounting groove 6, facilitates the change to cooperate with the transformation of extension body 202, magnet 203 and adjustment component 204, making the entire structure more convenient to be applied in real experiments, and accurately and intuitively expressing the ideas required by the experiment.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A stable variable combination support for structural experiments, comprising a base (1), wherein the bottom of the base (1) is fixedly mounted on an experimental platform, characterized in that: It also includes a base (2) and a central shaft (3). The base (2) is placed in the groove of the base, and the central shaft (3) passes through the base (1) and the base (2). A through groove (4) is provided on the base (2), and the central shaft (3) passes through the base (2) through the through groove (4).

2. The stable variable combination support for structural experiments according to claim 1, characterized in that: The base (1) specifically includes two forms: a circular base and a sliding base. The support platform (2) includes two forms: a triangular support platform and a trapezoidal support platform, which correspond to the two forms of the base (1) respectively.

3. A stable variable combination support for structural experiments according to claim 2, characterized in that: The through groove (4) includes an installation groove (6) opened inside the base (1). The installation groove (6) is provided with two movable frames (5) and forms a circular base by fixing the two movable frames (5). The two movable frames (5) also form a sliding base. The installation groove (6) fixes the movable frames (5). The support (2) includes a platform (201) and an extension (202). Adjustment members (204) are movably provided on both sides of the extension (202). The bottom horizontal plane of the adjustment member (204) is on the same horizontal plane as the lowest arc point in the middle of the extension (202). Magnets (203) are also provided on the top of both sides of the extension (202) to fix the adjustment member (204) after rotating 180 degrees.

4. A stable variable combination support for structural testing according to claim 2 or 3, characterized in that: The portion of the support platform (2) that extends into the base (1) and the platform portion that supports the experimental rod are specifically: the portion that extends into the base is placed in the groove in the middle of the base (1), and the platform portion is used to support the end of the experimental rod.

5. A stable variable-combination support for structural testing according to claim 4, characterized in that: The base (1) is fixed to the experimental platform, and the platform (2) is fixedly connected to the bottom of the experimental rod.

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