Large-deformation bending test tool for large sample piece

Abstract

The utility model relates to the technical field of mechanical property detection of composite materials, in particular to a large-deformation bending test tool for a large sample piece, which comprises a supporting assembly and a pressure applying assembly arranged above the supporting assembly, the supporting assembly comprises a base, a cross beam arranged above the base and first clamping mechanisms arranged on the two sides of the cross beam. The pressure applying assembly comprises a top base, a fixing base arranged below the top base and second clamping mechanisms arranged on the two sides of the fixing base. The second clamping mechanism is located between the first clamping mechanisms on the two sides of the cross beam. A sliding assembly is further arranged between the cross beam and the first clamping mechanism. The sliding assembly comprises a bottom plate, two parallel sliding rails and a sliding plate, the bottom plate is arranged on the cross beam, the sliding rails are arranged on the bottom plate, and the sliding plate is located on the upper portions of the sliding rails and connected with the first clamping mechanism. The beneficial effects of the utility model are that the lower part of the tool is provided with the guide rail slide block, so that the displacement of the lower part tool is smooth without blocking, the displacement limit is small, and the tool can be used for super-large displacement items which are all within the test standard.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical property testing of composite materials, in particular to a large-specimen large-deformation bending test tooling. Background Art

[0002] In modern industry and daily academic research, in order to ensure that different materials can meet different environmental requirements and functional requirements, bending tests need to be carried out on different materials. By observing various characteristics shown by different materials through bending tests, it is determined whether the material meets the requirements. At the same time, in academic research, through the bending test of the material, the trend of the fracture of the material is observed to judge the performance and yield strength of the material. At the same time, conversely, the metal content of unknown materials can also be detected, and appropriate materials can be added according to different attributes and characteristics for mixing to improve the inherent attributes of the material, so as to achieve the most perfect material structure. Currently, in some test toolings, due to different structures, the translation of the tooling will be stuck during the test process. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a large-specimen large-deformation bending test tooling to effectively solve the problems in the background art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is: a large-specimen large-deformation bending test tooling, including a support assembly and a pressing assembly arranged above the support assembly;

[0005] The support assembly includes a base, a cross beam arranged above the base, and first clamping mechanisms arranged on both sides of the cross beam;

[0006] The pressing assembly includes a top seat, a fixed seat arranged below the top seat, and second clamping mechanisms arranged on both sides of the fixed seat; the second clamping mechanisms are located between the first clamping mechanisms on both sides of the cross beam;

[0007] A sliding assembly is further arranged between the cross beam and the first clamping mechanism;

[0008] Wherein, the sliding assembly includes a bottom plate, two parallel slide rails and a slide plate. The bottom plate is arranged on the cross beam, the slide rails are arranged on the bottom plate, and the slide plate is located above the slide rails and is connected to the first clamping mechanism.

[0009] Furthermore, a chute matching the slide rails is arranged on the upper surface of the bottom plate.

[0010] Further, a slider that fits the slide rail is provided at the bottom of the skateboard, a T-shaped groove is provided on the cross beam, and the bottom plate is fixedly connected to a connecting bar in the T-shaped groove through bolts.

[0011] Further, both the first clamping mechanism and the second clamping mechanism include a fixing plate, a support plate, a first clamping shaft, and a second clamping shaft.

[0012] Among them, the support plates are fixed on both sides of the fixing plate, the first clamping shaft is fixed to the top of the support plate through a chuck, and the second clamping shaft is arranged parallel to and spaced from the first clamping shaft up and down between the two support plates.

[0013] Further, the first clamping shaft in the first clamping mechanism is at the lower part, and the second clamping shaft is at the upper part.

[0014] The first clamping shaft in the second clamping mechanism is at the upper part, and the second clamping shaft is at the lower part.

[0015] Further, a groove that fits the skateboard is provided at the lower part of the fixing plate.

[0016] Further, a pad leather groove is provided on one side platform of the first clamping shaft facing the second clamping shaft, and a replaceable pad leather is installed in the pad leather groove.

[0017] Further, U-shaped fixing blocks with openings facing upward are provided at both ends of the first clamping shaft, an installation block is provided above the U-shaped fixing blocks, both ends of the installation block are fixedly connected to the two arms of the U-shaped fixing blocks through bolts, and a bolt hole is further provided in the middle of the installation block, and the second clamping shaft and the installation block are connected through bolts.

[0018] Further, the fixing plate of the second clamping mechanism is fixedly connected to the fixed seat through the T-shaped groove structure.

[0019] Further, the support plate and the fixing plate are fixedly connected through a right-angled Z-shaped block.

[0020] The beneficial effect of the present utility model is that by adding guide rail sliders at the lower part of the tooling, the displacement of the lower tooling is smooth without jamming, the displacement limit is small, and super-large displacement projects can be carried out, all within the test standards. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 This is a schematic structural diagram of the large-sample large-deformation bending test tooling in the embodiment of the present utility model;

[0023] Figure 2 This is the front view of the large-sample large-deformation bending test tooling in the embodiment of the present utility model;

[0024] Figure 3 This is the working drawing of the large-sample large-deformation bending test tooling in the embodiment of the present utility model;

[0025] Figure 4 This is a schematic structural diagram of the sliding component in the embodiment of the present utility model;

[0026] Figure 5 This is a schematic structural diagram of the first clamping mechanism in the embodiment of the present utility model.

[0027] Reference numerals: 1, support component; 11, base; 12, cross beam; 13, first clamping mechanism; 131, fixing plate; 132, support plate; 133, first clamping shaft; 1331, pad leather groove; 134, second clamping shaft; 2, pressing component; 21, top seat; 22, fixed seat; 23, second clamping mechanism; 3, sliding component; 31, bottom plate; 32, slide rail; 33, slide plate; 34, slider; 4, chuck; 5, U-shaped fixing block; 6, mounting block; 7, right-angled Z-shaped block. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0031] AsFigures 1 to 5 The large-sample large-deformation bending test fixture shown in the figure comprises a support assembly 1 and a pressure assembly 2 arranged above the support assembly 1; the support assembly 1 comprises a base 11, a beam 12 arranged above the base 11, and a first clamping mechanism 13 arranged on both sides of the beam 12; the pressure assembly 2 comprises a top seat 21, a fixed seat 22 arranged below the top seat 21, and a second clamping mechanism 23 arranged on both sides of the fixed seat 22; the second clamping mechanism 23 is located between the first clamping mechanisms 13 on both sides of the beam 12; a sliding assembly 3 is also provided between the beam 12 and the first clamping mechanism 13; wherein the sliding assembly 3 comprises a bottom plate 31, two parallel slide rails 32 and a slide plate 33, the bottom plate 31 is arranged on the beam 12, the slide rail 32 is arranged on the bottom plate 31, and the slide plate 33 is located on the upper part of the slide rail 32 and connected to the first clamping mechanism 13.

[0032] The implementation process of the utility model is to send the sample to be tested through the platform into the first clamping mechanism 13 on one side, pass through the second clamping mechanism 23 and then pass through the first clamping mechanism 13, and then the pressure component 2 moves downward under the action of the driving member, such as Figure 3 As shown, the sample to be tested begins to bend, and both ends remain stable under the action of the first clamping mechanism 13. At the same time, in order to better perform the bending test, the first clamping mechanism 13 can be flexibly moved left and right under the control of the sliding component 3. At the same time, since the first clamping shaft is provided with a pad groove, the friction problem between the sample and the tooling during the test is optimized.

[0033] In the utility model, the upper surface of the bottom plate 31 is provided with a slide groove that matches the slide rail 32, and the bottom of the slide plate 33 is provided with a slider 34 that matches the slide rail 32. Through the matching design of the slide rail 32, the slide groove and the slider 34, the slide plate 33 can achieve accurate and smooth sliding on the bottom plate 31, avoiding displacement or shaking during the sliding process, ensuring the stability of the movement trajectory of the slide plate 33, and helping to achieve accurate positioning and operation. Since the slide plate 33 can slide freely on the slide rail 32, this structure also provides high flexibility and expansibility. According to actual needs, the position of the slide plate 33 can be easily adjusted to meet different usage requirements; the crossbeam 12 is provided with a T-slot, and the bottom plate 31 is fixedly connected to the connecting strip in the T-slot by bolts, which is both firm and convenient. When disassembly or assembly is required, it is only necessary to loosen or tighten the bolts, without complicated operations, which improves work efficiency, and at the same time enhances the stability and strength of the structure, so that the entire device is not easy to deform or damage when subjected to load or external force, and improves the durability and service life of the device.

[0034] In this solution, both the first clamping mechanism 13 and the second clamping mechanism 23 include a fixing plate 131, a support plate 132, a first clamping shaft 133, and a second clamping shaft 134. Among them, the support plate 132 is fixed on both sides of the fixing plate 131. The first clamping shaft 133 is fixed to the top of the support plate 132 through a chuck 4. The second clamping shaft 134 is arranged parallel to and spaced apart from the first clamping shaft 133 vertically between the two support plates 132. Through the combination of the first clamping shaft 133 and the second clamping shaft 134, the first clamping mechanism 13 and the second clamping mechanism 23 can firmly clamp the sample to be detected. In the first clamping mechanism 13, the first clamping shaft 133 is at the lower part and the second clamping shaft 134 is at the upper part. The design with the first clamping shaft at the lower part and the second clamping shaft at the upper part forms an up-and-down clamping force, effectively preventing the workpiece from shaking or moving, thus ensuring the stability and precision of the operation. In the second clamping mechanism 23, the first clamping shaft 133 is at the upper part and the second clamping shaft 134 is at the lower part. Since the first clamping shaft 133 and the second clamping shaft 134 can be adjusted independently, a flexible clamping range is provided, which can adapt to samples of different sizes or shapes. In addition, the fixing method of the chuck 4 also makes the replacement or adjustment of the clamping shaft simple and convenient. A groove that fits the sliding plate 33 is provided at the lower part of the fixing plate 131, ensuring the stable connection between the clamping mechanism and the sliding plate, not only enhancing the stability of the overall structure but also helping to accurately control the position of the clamping mechanism, improving the accuracy and efficiency of the operation.

[0035] Due to the friction problem between the sample and the tooling, the situation where the detection efficiency decreases also occurs from time to time. In the preferred solution, a pad skin groove 1331 is provided on the side platform of the first clamping shaft 133 facing the second clamping shaft 134. The pad skin groove 1331 is equipped with a replaceable pad skin, which can effectively increase the friction coefficient of the clamping surface, improve the stability and precision of clamping. The replaceability of the pad skin also means that different materials of pad skin can be selected according to different clamping requirements, so as to adapt to samples of different materials. At both ends of the first clamping shaft 133, U-shaped fixing blocks 5 with openings facing upwards are provided. Above the U-shaped fixing blocks 5, mounting blocks 6 are provided. By using the U-shaped fixing blocks 5 and the mounting blocks 6 in combination, the second clamping shaft 134 can be conveniently fixed and disassembled, which not only simplifies the installation process, improves the work efficiency, but also helps to ensure the installation precision of the second clamping shaft 134 and guarantees the normal operation of the clamping mechanism. Both ends of the mounting block 6 are fixedly connected to the two arms of the U-shaped fixing block 5 through bolts. Another bolt hole is provided in the middle of the mounting block 6. The second clamping shaft 134 and the mounting block 6 are connected through bolts. The fixed connection method of the U-shaped fixing block 5 and the mounting block 6 makes the entire clamping mechanism structure stable and able to withstand a large clamping force. At the same time, since the connections between all components are fixed by bolts, only the bolts need to be loosened for component replacement or maintenance during maintenance, which is convenient and fast.

[0036] The fixed plate 131 of the second clamping mechanism 23 is fixedly connected to the fixed seat 22 through a T-slot structure. By being fixedly connected to the fixed seat 22 through the T-slot structure, the fixed plate 131 of the second clamping mechanism 23 obtains a stable support. The T-slot structure usually has good load-bearing capacity and stability, and can effectively resist the interference of external forces, ensuring that the clamping mechanism will not shake or displace during operation. The design of the T-slot structure makes the connection between the fixed plate 131 and the fixed seat 22 both firm and easy to operate. When installation or disassembly is required, just align the fixed plate 131 with the T-slot and fix it appropriately to complete the installation process, reducing the complex operations required during installation and improving work efficiency; the support plate 132 and the fixed plate 131 are fixedly connected through a right-angled Z-shaped block, increasing the stability of the connection point. The right-angled Z-shaped block can ensure the perpendicularity between the support plate 132 and the fixed plate 131, preventing structural deformation or clamping failure caused by loose or insecure connection.

[0037] Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments. What is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A large sample large deformation bending test tool, characterized in that: It comprises a support component (1) and a pressure component (2) arranged above the support component (1); The support assembly (1) comprises a base (11), a crossbeam (12) arranged above the base (11), and a first clamping mechanism (13) arranged on both sides of the crossbeam (12); The pressure-applying assembly (2) comprises a top seat (21), a fixed seat (22) arranged below the top seat (21), and a second clamping mechanism (23) arranged on both sides of the fixed seat (22); the second clamping mechanism (23) is located between the first clamping mechanisms (13) on both sides of the crossbeam (12); A sliding assembly (3) is also provided between the crossbeam (12) and the first clamping mechanism (13); The sliding assembly (3) comprises a base plate (31), two parallel sliding rails (32) and a slide plate (33); the base plate (31) is arranged on the crossbeam (12); the sliding rail (32) is arranged on the base plate (31); and the slide plate (33) is located on the upper part of the sliding rail (32) and is connected to the first clamping mechanism (13).

2. The large sample large deformation bending test fixture according to claim 1 is characterized in that: The upper surface of the bottom plate (31) is provided with a slide groove that fits with the slide rail (32).

3. The large sample large deformation bending test fixture according to claim 1 is characterized in that: The bottom of the slide plate (33) is provided with a slide block (34) matched with the slide rail (32), the cross beam (12) is provided with a T-shaped slot, and the bottom plate (31) is fixedly connected to the connecting strip in the T-shaped slot by bolts.

4. The large sample large deformation bending test fixture according to claim 1 is characterized in that: The first clamping mechanism (13) and the second clamping mechanism (23) both comprise a fixing plate (131), a bracket plate (132), a first clamping shaft (133) and a second clamping shaft (134); The support plate (132) is fixed on both sides of the fixing plate (131), the first clamping shaft (133) is fixed to the top of the support plate (132) through a clamping plate (4), and the second clamping shaft (134) is arranged parallel to the first clamping shaft (133) and spaced apart between the two support plates (132).

5. The large sample large deformation bending test fixture according to claim 4 is characterized in that: The first clamping shaft (133) of the first clamping mechanism (13) is at the bottom, and the second clamping shaft (134) is at the top; The first clamping shaft (133) in the second clamping mechanism (23) is located at the upper part, and the second clamping shaft (134) is located at the lower part.

6. The large sample large deformation bending test fixture according to claim 4 is characterized in that: The lower part of the fixing plate (131) is provided with a groove which fits with the sliding plate (33).

7. The large sample large deformation bending test fixture according to claim 4 is characterized in that: A side platform of the first clamping shaft (133) facing the second clamping shaft (134) is provided with a pad groove (1331), and a replaceable pad is installed in the pad groove (1331).

8. The large sample large deformation bending test fixture according to claim 4 is characterized in that: U-shaped fixing blocks (5) with openings facing upward are provided at both ends of the first clamping shaft (133), and a mounting block (6) is provided above the U-shaped fixing block (5). The two ends of the mounting block (6) are fixedly connected to the two arms of the U-shaped fixing block (5) by bolts, and a bolt hole is further provided in the middle of the mounting block (6), and the second clamping shaft (134) and the mounting block (6) are connected by bolts.

9. The large sample large deformation bending test fixture according to claim 3, characterized in that: The fixing plate (131) of the second clamping mechanism (23) is fixedly connected to the fixing seat (22) via the T-slot structure.

10. The large sample large deformation bending test fixture according to claim 4, characterized in that: The support plate (132) and the fixing plate (131) are fixedly connected via a right-angle Z-shaped block (7).

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