Three-point bending test device convenient to adjust

Abstract

The utility model relates to the technical field of material performance testing, and particularly discloses a three-point bending test device convenient to adjust, which comprises a pressure head, a movable mounting seat, a locking handle, a bolt, a connecting piece and a fixed support. The pressure head is vertically located at the center right above the three-point bending test device, movable mounting seats are mounted on two sides of the fixed support, the movable mounting seats are connected with the fixed support through bolts, locking handles are mounted on two sides of each movable mounting seat, the movable mounting seats move on a working surface, and the locking handles are connected with the fixed support through bolts. According to the utility model, the span of the movable mounting seat can be adjusted through the driving of the locking handle, so that the effective test range of materials is enlarged, and the bending performance data of materials with different widths under the loading condition can be conveniently measured.

Description

Technical Field

[0001] The utility model relates to the field of material performance testing, in particular to a three-point bending test device which is easy to adjust. Background Art

[0002] The three-point bending test machine places the specimen on two supporting points at a certain distance, and applies a downward load to the specimen at the midpoint of the two supporting points. When the three contact points of the specimen form two equal moments, three-point bending occurs, and the specimen breaks at the midpoint.

[0003] A material's elastic modulus, stress-strain behavior, and failure limit in bending can all be determined using a simplified three-point bend test. In a three-point bend test, the convex surface of a sheet or plate is placed in tension, with the outer fibers experiencing the maximum stress and strain. Failure occurs when the strain or elongation exceeds the material's tolerance limit.

[0004] Currently, the existing three-point bending test device for material performance testing has the following problems: 1. The thickness used for material strength testing cannot be adjusted; 2. During the material strength test, the span of the bending test device is difficult to adjust; 3. The radius size of the loaded indenter is relatively fixed and is not easy to change according to the actual size of the material being tested. Utility Model Content

[0005] (1) Technical issues to be resolved

[0006] In response to the above problems, the utility model provides a three-point bending test device that is easy to adjust, in particular, a three-point bending test device for testing the strength properties of materials. The purpose is to solve the problems of small loading range, poor testing accuracy, and limited span adjustment distance in the current field of material performance testing.

[0007] (2) Technical solution

[0008] To address the aforementioned technical issues, the present invention provides an easily adjustable three-point bend test device, comprising: a pressure head, a movable mounting base, a locking handle, bolts, a connector, and a fixed support. The pressure head is positioned vertically at the center directly above the three-point bend test device. Movable mounting bases are mounted on either side of the fixed support, each connected to the fixed support via bolts. Locking handles are mounted on either side of the movable mounting base. The movable mounting base is movable on a work surface. A connector is mounted at the center below the fixed support.

[0009] Preferably, the bottom of the pressure head is semicircular, the radius of the pressure head is adjustable, and the pressure head can move up and down with the applied load.

[0010] Preferably, the locking handle is used to drive the movable mounting base to move, and there are two locking handles.

[0011] Preferably, the movable mounting base is L-shaped, and the top of the movable mounting base is semicircular. The two sides of the movable mounting base are connected to the fixed support by two bolts respectively. The number of the bolts is four.

[0012] Preferably, a connecting piece is installed below the fixed support, and the connecting piece is located at the vertical center of the fixed support.

[0013] Preferably, the movable mounting seat can reciprocate on the working surface, so that the span of the three-point bending test device can be adjusted.

[0014] Beneficial effects

[0015] 1. The utility model provides a three-point bending test device that is easy to adjust. Its pressure head is vertically located at the center directly above the three-point bending test device. Mobile mounting seats are installed on both sides of the fixed support. The mobile mounting seats can be connected to the fixed support by bolts, and locking handles are installed on both sides of the mobile mounting seat. The mobile mounting seat can be moved on the working surface. A connecting piece is installed at the center below the fixed support. The overall structure of the device is simple and easy to install.

[0016] 2. This utility model provides an easily adjustable three-point bending test apparatus. The indenter is positioned vertically above the apparatus, and the base of the loading indenter is semicircular, with an adjustable radius. By varying the contact area of ​​the indenter on the material, the elastic modulus, stress-strain behavior, and failure limit of the material under bending conditions can be measured, thereby obtaining data parameters for evaluating the test material's performance.

[0017] 3. This utility model provides an easily adjustable three-point bending test device. Its movable mounting base is L-shaped overall structure with a semicircular top. Two bolts connect the movable mounting base to the fixed support on either side. Furthermore, the span of the movable mounting base can be adjusted by actuating a locking handle, expanding the effective testing range of materials and facilitating the measurement of bending performance data for materials of varying widths under loading conditions.

[0018] 4. The utility model provides an easily adjustable three-point bending test device, which is made of metal material and can effectively measure the bending properties of non-metallic materials such as carbon fiber, rubber and other materials, and can also accurately obtain the strength, hardness, modulus and other performance parameters of metal materials such as aluminum. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of a three-point bending test device that is easy to adjust in the utility model;

[0020] Figure 2 This is a rear view of a three-point bending test device that is easy to adjust in the utility model;

[0021] Figure 3 This is a schematic diagram of the indenter of a three-point bending test device that is easy to adjust in the present invention;

[0022] Figure 4 This is a top view of a three-point bending test device that is easy to adjust according to the utility model.

[0023] The names of the components corresponding to the various reference numerals in the figure are: 1. pressure head; 2. movable mounting base; 3. locking handle; 4. bolt; 5. connecting piece; 6. fixed support; 7. working surface. DETAILED DESCRIPTION

[0024] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0026] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0027] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0028] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples, however, one skilled in the art will appreciate that the examples can be practiced without these specific details.

[0029] The following describes the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0030] See Figures 1 to 4 The present invention provides a three-point bending test device that is easy to adjust. In order to make the practical purpose, technical solution and advantages of the present invention clearer, the specific operation process of the present invention is introduced in detail below in combination with the accompanying drawings and the working process of the device.

[0031] The utility model provides a three-point bending test device that is easy to adjust, mainly comprising: a pressure head 1, a movable mounting base 2, a locking handle 3, a bolt 4, a connecting piece 5, and a fixed support 6. The pressure head 1 is vertically located at the center directly above the three-point bending test device. The movable mounting base 2 is installed on both sides of the fixed support 6. The movable mounting base 2 is connected to the fixed support 6 by bolts 4. The locking handles 3 are installed on both sides of the movable mounting base 2. The movable mounting base is driven by the locking handles 3 to reciprocate on the working surface 7. The connecting piece 5 is installed at the center below the fixed support 6.

[0032] See Figures 1 to 3 The bottom of the pressure head 1 is semicircular, wherein the radius of the loading pressure head 1 is adjustable, and the pressure head 1 can move up and down with the loading load.

[0033] See Figures 1 to 2 The locking handle 3 is used to drive the movable mounting base 2 to move, and there are two locking handles 3 .

[0034] See Figure 1 、 Figure 2 and Figure 4 The movable mounting base 2 is L-shaped, and the top of the movable mounting base 2 is semicircular. Both sides of the movable mounting base 2 are connected to the fixed support 6 by two bolts 4 respectively, and the number of the bolts 4 is four.

[0035] See Figures 1 to 2 A connecting member 5 is installed below the fixed support 6 and is located at the vertical center of the fixed support 6 .

[0036] See Figure 1 、 Figure 2 and Figure 4 The movable mounting base 2 can move relative to the working surface 7, thereby making the span of the three-point bending test device adjustable.

[0037] The working principle and specific workflow of an easily adjustable three-point bending test device are as follows: first, place the test material on the working surface 7, drive the movable mounting seat 2 through the locking handle 3, adjust the span of the test material and lock it, place the indenter 1 vertically above the test material, adjust its loading radius, apply a certain load to the indenter 1 according to the test requirements, press the indenter 1 down until it contacts the test material and bends it, and test the performance parameters of the test material under bending conditions.

[0038] The same or similar parts between the various embodiments in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments.

[0039] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A three-point bending test device that is easy to adjust, characterized by: The invention comprises a pressure head (1), a movable mounting seat (2), a locking handle (3), a bolt (4), a connecting piece (5), and a fixed support (6); the pressure head (1) is vertically located at the center directly above the three-point bending test device, movable mounting seats (2) are installed on both sides of the fixed support (6), the movable mounting seat (2) is connected to the fixed support (6) through bolts (4), locking handles (3) are installed on both sides of the movable mounting seat (2), the movable mounting seat (2) is slidably connected to a working surface (7), and a connecting piece (5) is installed at the center below the fixed support (6).

2. The easily adjustable three-point bending test device according to claim 1, characterized in that: The bottom of the pressure head (1) is semicircular, the radius of the pressure head (1) is adjustable, and the pressure head (1) can move up and down with the applied load.

3. The easily adjustable three-point bending test device according to claim 1, characterized in that: The locking handle (3) is used to drive the movable mounting seat (2) to move, and there are two locking handles (3).

4. The easily adjustable three-point bending test device according to claim 1, characterized in that: The movable mounting seat (2) is L-shaped, and the top of the movable mounting seat (2) is semicircular; both sides of the movable mounting seat (2) are connected to the fixed support (6) via two bolts (4), and the number of the bolts (4) is four.

5. The easily adjustable three-point bending test device according to claim 1, characterized in that: A connecting piece (5) is installed below the fixed support (6), and the connecting piece (5) is located at the vertical center of the fixed support (6).

6. The easily adjustable three-point bending test device according to claim 1, characterized in that: The movable mounting seat (2) makes the span of the three-point bending test device adjustable by relatively moving on the working surface (7).

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