Bending test angle measuring device

Abstract

The utility model belongs to the technical field of mechanical testing, and discloses a bending test angle measuring device. Comprising a base, supporting assemblies, a sample, measuring assemblies, a pressure head and a connector, the two supporting assemblies are arranged at the top of the base, the sample is placed at the tops of the supporting assemblies, the measuring assemblies are arranged on the outer sides of the two supporting assemblies, the pressure head is located at the top of the sample, and the connector is installed at the bottom of the base. The supporting assembly comprises a supporting base, a sliding block, a supporting roller and a baffle. The measuring assembly comprises an ejector rod, a sliding plate, a protractor and a sliding block. Samples of different sizes are placed through the supporting assembly, the measuring assembly is additionally arranged, after a bending test is finished, the protractor slides upwards to enable the ejector rod to be attached to the lowest point of the bent sample, the protractor serves as a measurement background, angle changes after the sample is bent are observed, and compared with a naked eye observation mode, the precision is higher, operation is easy, and cost is low. The use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical testing, and more specifically to a bending test angle measuring device. Background Art

[0002] In addition to their importance and diversity, materials also have some common characteristics, such as the mechanical properties of materials, also known as mechanical properties. Any material will deform after being subjected to force, and will break when deformed to a certain extent. The deformation and fracture behavior of the material under the action of external load is called mechanical behavior. It is determined by the material structure inside the material and is an inherent property of the material. The major mechanical properties of different materials can usually be measured using the Kezhun measurement and control testing machine through tensile tests, compression tests, bending tests, impact tests and fatigue tests. Among them, the bending test is a commonly used test method used to evaluate the performance of materials when subjected to bending forces.

[0003] In bending tests, accurate measurement of angle changes is crucial to evaluating the bending properties of materials. However, traditional angle measurement methods often involve visual observation, which has problems such as low accuracy and complex operation, and cannot meet the needs of detection. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model proposes a bending test angle measuring device.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bending test angle measuring device, comprising a base, a support assembly, a sample, a measuring assembly, a pressure head and a joint, wherein two groups of support assemblies are provided on the top of the base, a sample is placed on the top of the support assembly, and a measuring assembly is provided on the outside of the two groups of support assemblies, the pressure head is located on the top of the sample, and the joint is installed at the bottom of the base;

[0006] The support assembly includes a support seat, a slider, a support roller and a baffle, the bottom of the support seat is installed with a slider through a bolt 1, the top of the support seat is installed with a support roller through a bolt 2, and the top of the support seat is also installed with two baffles through two bolts 3;

[0007] The measuring assembly includes a push rod, a slide, a protractor and a limit block. The push rod is located between two groups of support seats. Slides are installed on both sides of the push rod. A protractor is installed on the top of one of the slides. A transverse groove is provided on the side where the slides on both sides are close to each other. Limit blocks are slidably installed in the transverse groove. Vertical grooves slidably connected to the limit blocks are provided on both sides of the support seat.

[0008] Furthermore, a slide groove running through both ends is provided on the top of the base, the slide groove is slidably connected to the slider, and the bottom of the support seat is slidably connected to the top of the base.

[0009] Further, one end of the top of the supporting roller, which is close to each other, is provided with an upwardly convex arc surface, and the arc surface abuts against the bottom of the specimen. One end of the top of the supporting roller is provided with an inclined surface that slopes downward at an angle towards the other end.

[0010] Further, a guiding block is installed at the bottom of the baffle plate, a guiding groove slidably connected with the guiding block is provided at the top of the supporting seat, a pressing block is provided at one end of the baffle plate, the bottom of the pressing block is in pressing contact with the inclined surface of the top of the supporting roller, and one side of the adjacent pressing blocks close to each other is in pressing contact with the end of the specimen.

[0011] Further, a first scale is provided on the outer side of the base, a sliding hole slidably connected with the third bolt is provided at the top of the baffle plate, and a second scale located at the bottom of the sliding hole is provided at the top of the supporting seat.

[0012] Further, a triangular tip is provided at the top of the ejector rod, the top of the tip coincides with the central extension line of the protractor, the sliding plate is located outside the supporting seat, and the limiting block is cylindrical and has an I-shaped cross section.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: Different-sized specimens are placed through the supporting assembly, a measuring assembly is added. After the bending test is completed, the protractor is slid upward to make the ejector rod fit with the lowest point of the bent specimen. Using the protractor as a measurement background, the angle change of the specimen after bending is observed, which has higher accuracy compared with the naked-eye observation method, and is simple to operate and convenient to use. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is an exploded view of the overall structure of the present utility model;

[0016] Figure 3 is a schematic diagram of the structure of the measuring assembly of the present utility model;

[0017] Figure 4 is a schematic diagram of the positional relationship among the supporting assembly, the base and the specimen of the present utility model;

[0018] Figure 5 is a schematic diagram of the measuring effect of the bending test of the present utility model.

[0019] In the figure:

[0020] 1. Base; 2. Support assembly; 201. Support base; 202. Slide block; 203. Bolt 1; 204. Support roller; 205. Bolt 2; 206. Baffle; 207. Bolt 3; 3. Specimen; 4. Measurement assembly; 401. Push rod; 402. Slide plate; 403. Protractor; 404. Limit block; 5. Press head; 6. Connector. Detailed implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-5 , the present invention provides the following technical solutions: a bending test angle measuring device, including a base 1, a support assembly 2, a specimen 3, a measurement assembly 4, a press head 5 and a connector 6. Two groups of support assemblies 2 are provided on the top of the base 1. A specimen 3 is placed on the top of the support assembly 2. A measurement assembly 4 is provided outside the two groups of support assemblies 2. The press head 5 is located on the top of the specimen 3. The connector 6 is installed at the bottom of the base 1. An installation plate is installed at the outer end of the support base 201. Corresponding jacks are provided between the installation plate and the output end of the external cylinder, between the press head 5 and the upper fixture seat of the testing machine, and between the connector 6 and the lower fixture seat of the testing machine. Pins are provided in the jacks. The press head 5 and the connector 6 are fixed to the upper and lower fixture seats of the external testing machine through the pins. The installation plate at the outer end of the support base 201 is fixed to the output end of the external cylinder. By starting the testing machine, the press head 5 moves up and down to press the specimen 3 to perform a bending test on the specimen 3. By driving the two support bases 201 to slide relative to each other through the external cylinder, the distance between the two support bases 201 is adjusted for specimens 3 of different lengths.

[0023] The support assembly 2 includes a support base 201, a slider 202, a support roller 204 and a baffle 206. The bottom of the support base 201 is installed with the slider 202 through a first bolt 203. The top of the base 1 is provided with a chute penetrating both ends, and the chute is slidably connected with the slider 202. The bottom of the support base 201 is slidably connected with the top of the base 1. The cross-section of the slider 202 is T-shaped, and the base 1 is linearly slid by limiting the slider 202. The top of the support base 201 is installed with the support roller 204 through a second bolt 205. The ends of the support roller 204 close to each other at the top are provided with upwardly convex arc surfaces, and the arc surfaces are in contact with the bottom of the specimen 3. One end of the top of the support roller 204 is provided with an inclined surface angled downward to the other end. The top of the support base 201 is also installed with two baffles 206 through two third bolts 207. The bottom of the baffle 206 is installed with a guide block, and the top of the support base 201 is provided with a guide groove slidably connected with the guide block. The guide groove penetrates both sides of the support base 201. The guide block and the guide groove play a role in limiting the baffle 206. One end of the baffle 206 is provided with a pressing block, and the bottom of the pressing block is in pressing contact with the inclined surface of the top of the support roller 204. The contact area with the support roller 204 is increased through the pressing block, and the adjacent pressing blocks are in pressing contact with the end of the specimen 3 on the side close to each other. The top of the baffle 206 is provided with a sliding hole slidably connected with the third bolt 207. A first scale is provided on the outside of the base 1, and a second scale is provided at the bottom of the sliding hole at the top of the support base 201. Through the corresponding positions of the first scale and the second scale, it is convenient for the staff to record the test data.

[0024] The measuring assembly 4 includes a top rod 401, a slide plate 402, a protractor 403 and a limit block 404. The top rod 401 is located between two groups of support bases 201. Slide plates 402 are installed on both sides of the top rod 401. A protractor 403 is installed on the top of one slide plate 402. The top of the top rod 401 is provided with a triangular tip, and the top of the tip coincides with the center extension line of the protractor 403. The top rod 401 contacts the specimen 3 to limit the position of the protractor 403. Using the protractor 403 as a measurement background, it is convenient to observe the angle change of the specimen 3 after bending. Transverse grooves are opened on the sides of the two slide plates 402 close to each other, and limit blocks 404 are slidably installed in the transverse grooves. Vertical grooves slidably connected with the limit blocks 404 are opened on both sides of the support base 201. The vertical grooves penetrate the top of the support base 201 and are in contact with the bottom of the support roller 204, playing a role in limiting the limit blocks 404 in the vertical grooves. The slide plates 402 are located outside the support base 201. The limit blocks 404 are cylindrical and their cross-section is I-shaped. The cylindrical design of the limit blocks 404 plays a role in reducing the frictional resistance between the limit blocks 404 and the transverse grooves and vertical grooves. The design of the discs plays a role in limiting the limit blocks 404 to prevent the limit blocks 404 from detaching from the transverse grooves and vertical grooves.

[0025] Working principle: When conducting a bending test, first connect the indenter 5 and the joint 6 to the upper and lower fixture seats of an external testing machine. Then connect the outer end mounting plate of the support seat 201 to the output end of an external cylinder. Insert pins into the jacks of the mounting plate and the output end of the external cylinder, the indenter 5 and the upper fixture seat of the external testing machine, and the joint 6 and the lower fixture seat of the testing machine to fix them, thus completing the installation of the measuring device. Start the external cylinder to make the support seat 201 slide relatively, and observe the sliding distance through the scale one on the outside of the base 1. When sliding, the support seat 201 drives the limit block 404 to slide in the transverse groove of the slide plate 402. Then loosen the bolt three 207, slide the baffle 206, and observe the sliding distance through the scale two on the top of the support seat 201. Place the two ends of the specimen 3 between adjacent baffles 206 respectively, and tighten the bolt three 207 to fix the specimen 3. Start the testing machine to drive the indenter 5 to move downward, and the indenter 5 presses the specimen 3 for a bending test. After the bending test, slide the protractor 403 upward. The protractor 403 drives the slide plate 402 and the ejector rod 401 to slide upward. The limit block 404 slides in the vertical groove of the support seat 201. When the top of the ejector rod 401 fits with the bottom of the specimen 3, use the protractor 403 as a measurement background to observe the angle change of the specimen 3 after bending.

[0026] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0027] Finally: The above is only the preferred embodiment of the present utility model and is not used to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Bending test angle measuring device, comprising a base (1), a support assembly (2), a specimen (3), a measuring assembly (4), a pressure head (5) and a joint (6), characterized in that: At the top of the base (1), there are two groups of support components (2). A specimen (3) is placed on the top of the support components (2). A measuring component (4) is arranged outside the two groups of support components (2). The indenter (5) is located at the top of the specimen (3). The joint (6) is installed at the bottom of the base (1). The support component (2) includes a support base (201), a slider (202), a support roller (204) and a baffle (206). The bottom of the support base (201) is installed with the slider (202) through a first bolt (203). The top of the support base (201) is installed with the support roller (204) through a second bolt (205). Two baffles (206) are also installed on the top of the support base (201) through two third bolts (207). The measuring component (4) includes a push rod (401), a slide plate (402), a protractor (403) and a limit block (404). The push rod (401) is located between the two groups of support bases (201). Slide plates (402) are installed on both sides of the push rod (401). A protractor (403) is installed on the top of one side of the slide plate (402). Horizontal grooves are formed on the sides of the two slide plates (402) close to each other. A limit block (404) is slidably installed in the horizontal groove. Vertical grooves for slidably connecting with the limit block (404) are formed on both sides of the support base (201).

2. The bending test angle measuring device according to claim 1, wherein A through groove is formed at the top of the base (1). The groove is slidably connected with the slider (202). The bottom of the support base (201) is slidably connected with the top of the base (1).

3. The bending test angle measuring device according to claim 1, wherein At the ends of the support roller (204) close to each other at the top, there are upwardly protruding arc-shaped surfaces which are in contact with the bottom of the specimen (3). One end of the top of the support roller (204) has an inclined surface angled downward from one end to the other end.

4. The bending test angle measuring device according to claim 3, characterized in that, A guide block is installed at the bottom of the baffle (206). A guide groove for slidably connecting with the guide block is formed at the top of the support base (201). A pressing block is arranged at one end of the baffle (206). The bottom of the pressing block is in pressing contact with the inclined surface at the top of the support roller (204). The sides of adjacent pressing blocks close to each other are in pressing contact with the end of the specimen (3).

5. The bending test angle measuring device according to claim 1, characterized in that, A first scale is arranged outside the base (1). A sliding hole for slidably connecting with the third bolt (207) is formed at the top of the baffle (206). A second scale is arranged at the top of the support base (201) at the bottom of the sliding hole.

6. The bending test angle measuring device according to claim 1, wherein A triangular tip is arranged at the top of the push rod (401). The top of the tip coincides with the central extension line of the protractor (403). The slide plate (402) is located outside the support base (201). The limit block (404) is cylindrical and has an I-shaped cross-section.

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