Short beam bending fixture for high temperature chamber

Abstract

The utility model relates to short beam bending fixture technical field, and disclose a short beam bending fixture for high temperature box, the utility model discloses a scheme, including guide rail, the inside of guide rail is evenly provided with two groups of slide table, the utility model discloses after the locking bolt is screwed, can make the second antiskid pad and the inside wall bottom of guide rail closely fit, the first antiskid pad and mounting plate closely fit, improve the connection stability between locking bolt and mounting plate and slide table, thereby improve the stability that slide table fixed in guide rail, and high -strength spring will drive third antiskid pad and guide rail closely fit, to this further increase the stability that slide table fixed in guide rail, and at the same time when the device causes the clearance to produce because of high temperature expansion, high -strength spring utilizes its own self -adaptation elasticity, can always press down third antiskid pad, to this guarantee the stability of slide table in guide rail, and prevent the displacement of support block to improve the test accuracy.

Description

Technical Field

[0001] This utility model belongs to the technical field of short beam bending fixtures, specifically a short beam bending fixture for a high-temperature chamber. Background Technology

[0002] Short beam bending tests are a key method for evaluating the high-temperature bending strength, toughness, and failure behavior of materials. The test fixtures must be able to accurately simulate actual working conditions and ensure data reliability.

[0003] Traditional short beam bending fixtures often employ a slide-support block structure. The distance between two sets of support blocks is manually adjusted using bolts. The sample is then placed on the two sets of support blocks, and a press is used to drive the pressure block to bend the sample. Although this type of fixture is simple in structure and low in cost, in high-temperature environments, the expansion rates of various components may be inconsistent due to differences in thickness, cross-sectional area, and volume. The bolt rod is thinner and has a smaller axial expansion after heating, while the support block is thicker and has a larger radial expansion. The asynchronous expansion of the two can cause the locking force to loosen. Therefore, the thermal expansion of the metal material can lead to positioning misalignment of the support block and loosening of the locking bolts, resulting in errors in the test data. To address this, we propose a short beam bending fixture for a high-temperature chamber. Utility Model Content

[0004] The purpose of this invention is to provide a short beam bending fixture for a high-temperature chamber to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a short beam bending fixture for a high-temperature chamber, comprising a guide rail, two sets of slides evenly arranged inside the guide rail, a mounting plate on the top of the slides, a support block on the top of the mounting plate, locking bolts inside the slides and mounting plate, a second anti-slip pad at the bottom of the locking bolts, a first pressure ring on the outer ring of the bolt head, a first anti-slip pad at the bottom of the first pressure ring, a connecting ring above the first pressure ring, connecting posts evenly arranged at the bottom of the connecting rings, a second pressure ring at the bottom of the connecting posts, a third anti-slip pad at the bottom of the second pressure ring, and a high-strength spring on the outer ring of the connecting posts.

[0006] Preferably, the top of the mounting plate and the slide has a threaded hole, the top of the mounting plate and the slide has a through hole evenly distributed, and the bottom of the slide has an annular groove.

[0007] Preferably, the annular groove is located on the outer ring of the threaded hole at the bottom of the slide, and the annular groove is connected to the through hole at the bottom of the slide.

[0008] Preferably, the locking bolt is screwed into the threaded holes of the mounting plate and the slide, the first pressure ring is located at the top of the mounting plate, the connecting column is slidably disposed in the through hole and the annular groove, the second pressure ring and the third anti-slip pad are slidably disposed in the annular groove, and the high-strength spring is uniformly fixedly disposed between the second pressure ring and the annular groove.

[0009] Preferably, the bottom of the third anti-slip pad and the second anti-slip pad are in close contact with the bottom of the inner sidewall of the guide rail, and the bottom of the first anti-slip pad is in close contact with the top of the mounting plate.

[0010] Preferably, the mounting plate is located at the top of the guide rail, and a fixing sleeve is provided at the bottom of the guide rail.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: by tightening the locking bolt, the second anti-slip pad can be tightly fitted to the bottom of the inner wall of the guide rail, and the first anti-slip pad can be tightly fitted to the mounting plate, improving the connection stability between the locking bolt, the mounting plate, and the slide, thereby improving the stability of the slide fixed in the guide rail. Furthermore, the high-strength spring will drive the third anti-slip pad to fit tightly to the guide rail, further increasing the stability of the slide fixed in the guide rail. At the same time, when the device expands due to high temperature and gaps are generated, the high-strength spring can always press down the third anti-slip pad using its own adaptive elasticity, thereby ensuring the stability of the slide in the guide rail and preventing the support block from shifting, thus improving the testing accuracy.

[0012] When the locking bolt is turned counterclockwise, it will cause the second, first, and third anti-slip pads to move upward. When the locking bolt is turned clockwise, it will cause the second and first anti-slip pads to move downward, while the third anti-slip pad will move downward automatically due to the high-strength spring, thereby improving the ease of use of the device. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] In the attached diagram:

[0015] Figure 1 This is a schematic diagram of the structure of a short beam bending clamp for a high-temperature chamber according to the present invention;

[0016] Figure 2 This is a front sectional view of a short beam bending clamp for a high-temperature chamber according to the present invention.

[0017] Figure 3 This utility model Figure 2 Enlarged view of part A;

[0018] Figure 4 This utility model Figure 2 Enlarged view of part B.

[0019] In the diagram: 1. Guide rail; 11. Slide table; 12. Mounting plate; 13. Support block; 14. Fixing sleeve; 15. Locking bolt; 16. Connecting ring; 17. Connecting column; 18. First pressure ring; 19. First anti-slip pad; 2. Second anti-slip pad; 21. Second pressure ring; 22. Third anti-slip pad; 23. High-strength spring. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4A short beam bending fixture for a high-temperature chamber includes a guide rail 1. Two sets of sliding platforms 11 are evenly slidably arranged inside the guide rail 1. A mounting plate 12 is fixedly mounted on the top of each sliding platform 11, and a support block 13 is fixedly mounted on the top of each mounting plate 12. Locking bolts 15 are rotatably mounted inside the sliding platforms 11 and mounting plates 12. A second anti-slip pad 2 is fixedly mounted at the bottom of the locking bolt 15. A first pressure ring 18 is fixedly mounted on the outer ring of the locking bolt 15. A first anti-slip pad 19 is fixedly mounted at the bottom of the first pressure ring 18. A connecting ring 16 is placed above the first pressure ring 18. Connecting posts 17 are evenly fixedly mounted at the bottom of the connecting ring 16. A second pressure ring 21 is fixedly mounted at the bottom of the connecting post 17. A third anti-slip pad 22 is fixedly mounted at the bottom of the second pressure ring 21. A high-strength spring 23 is placed on the outer ring of the connecting post 17. When it is necessary to move the support block 13, simply rotate the locking bolt 15 counterclockwise. Bolt 15 moves upward along the threaded holes of mounting plate 12 and slide 11. When bolt 15 moves upward, it drives first pressure ring 18 and first anti-slip pad 19 to move upward, and makes first pressure ring 18 contact with connecting ring 16. Then, bolt 15 continues to rotate. Bolt 15 then drives connecting ring 16 to move upward through first pressure ring 18. Connecting ring 16 drives second pressure ring 21 and third anti-slip pad 22 to move upward through connecting post 17. At the same time, second pressure ring 21 will squeeze high-strength spring 23 upward. At this time, first anti-slip pad 19 will separate from mounting plate 12, and second anti-slip pad 21 and third anti-slip pad 22 will separate from the bottom of inner side wall of guide rail 1. Then, slide 11 can be easily slid in guide rail 1, thereby causing slide 11 to move support block 13 through mounting plate 12. Mounting plate 12 is located at the top of guide rail 1, and fixed sleeve 14 is fixedly installed at the bottom of guide rail 1.

[0022] The top of the mounting plate 12 and the slide 11 are provided with threaded holes, and the top of the mounting plate 12 and the slide 11 are provided with through holes evenly distributed. The bottom of the slide 11 is provided with an annular groove, which is located around the threaded holes at the bottom of the slide 11 and is connected to the through holes at the bottom of the slide 11. The locking bolt 15 is screwed into the threaded holes of the mounting plate 12 and the slide 11. The first pressure ring 18 is located at the top of the mounting plate 12. The connecting post 17 is slidably disposed in the through holes and the annular groove. The second pressure ring 21 and the third anti-slip pad 22 are slidably disposed in the annular groove. The high-strength spring 23 is evenly fixed between the second pressure ring 21 and the annular groove. After the position of the support block 13 is determined, the locking bolt is screwed into the annular groove. Tighten bolt 15 clockwise. At this time, locking bolt 15 will drive the second anti-slip pad 2 to move downward and fit tightly against the bottom of the inner wall of guide rail 1. Then, locking bolt 15 will drive the first anti-slip pad 19 to move downward and fit tightly against the top of mounting plate 12 through the first pressure ring 18. When the first pressure ring 18 moves downward and separates from the connecting ring 16, the high-strength spring 23 will use its own rebound force to drive the second pressure ring 21 to move downward. Then, the second pressure ring 21 will drive the third anti-slip pad 22 to move downward and fit tightly against the bottom of the inner wall of guide rail 1. The bottom of the third anti-slip pad 22 and the second anti-slip pad 2 are tightly fitted against the bottom of the inner wall of guide rail 1, and the bottom of the first anti-slip pad 19 is tightly fitted against the top of mounting plate 12.

[0023] Working principle: When the support block 13 needs to be moved, simply rotate the locking bolt 15 counterclockwise. The locking bolt 15 will then move upward along the threaded holes of the mounting plate 12 and the slide 11. As the locking bolt 15 moves upward, it drives the first pressure ring 18 and the first anti-slip pad 19 to move upward, and the first pressure ring 18 comes into contact with the connecting ring 16. Then, continue to rotate the locking bolt 15. The locking bolt 15 will then drive the connecting ring 16 to move upward through the first pressure ring 18. The connecting ring 16 will drive the second pressure ring 21 and the third anti-slip pad 22 to move upward through the connecting post 17. At the same time, the second pressure ring 21 will squeeze the high-strength spring 23 upward. At this time, the first anti-slip pad 19 will separate from the mounting plate 12, and the second anti-slip pad 21 and the third anti-slip pad 22 will separate from the bottom of the inner wall of the guide rail 1. Then, the slide 11 can be easily slid within the guide rail 1, thereby causing the support block 13 to move through the mounting plate 12.

[0024] Once the position of the support block 13 is determined, tighten the locking bolt 15 clockwise. This will cause the locking bolt 15 to move the second anti-slip pad 2 downwards, tightly fitting it against the bottom of the inner wall of the guide rail 1, thus fixing the slide table 11 within the guide rail 1. This completes the position fixation of the support block 13. The test piece can then be placed on top of the two sets of support blocks 13. The locking bolt 15 will then move the first anti-slip pad 19 downwards via the first pressure ring 18, tightly fitting it against the top of the mounting plate 12. This increases the friction between the locking bolt 15 and the mounting plate 12, thereby improving the connection stability between the locking bolt 15, the mounting plate 12, and the slide table 11, and thus improving the fixation of the slide table 11 to the guide rail 1. The high-strength spring 23, when the first pressure ring 18 moves downward and separates from the connecting ring 16, uses its own rebound force to drive the second pressure ring 21 to move downward. In turn, the second pressure ring 21 drives the third anti-slip pad 22 to move downward and fit tightly against the bottom of the inner side wall of the guide rail 1, thereby further increasing the stability of the slide table 11 fixed in the guide rail 1. When the slide table 11, locking bolt 15 and guide rail 1 are in the high-temperature chamber, gaps are caused by high-temperature expansion. The high-strength spring 23, using its own adaptive elasticity, can always press down the third anti-slip pad 22 through the second pressure ring 21, thereby ensuring the stability of the slide table 11 in the guide rail 1, and preventing the support block 13 from shifting, thus improving the test accuracy.

[0025] It is worth noting that all components of the device are made of high-temperature resistant materials.

Claims

1. A short beam bending fixture for a high-temperature chamber, characterized in that, The system includes a guide rail (1), with two sets of slides (11) evenly arranged inside the guide rail (1). A mounting plate (12) is provided on the top of the slides (11), and a support block (13) is provided on the top of the mounting plate (12). Locking bolts (15) are provided inside the slides (11) and the mounting plate (12). A second anti-slip pad (2) is provided at the bottom of the locking bolts (15). A first pressure ring (18) is provided on the outer ring of the screw head of the locking bolts (15). A first anti-slip pad (19) is provided at the bottom of the first pressure ring (18). A connecting ring (16) is placed above the first pressure ring (18). A connecting post (17) is evenly arranged at the bottom of the connecting ring (16). A second pressure ring (21) is provided at the bottom of the connecting post (17). A third anti-slip pad (22) is provided at the bottom of the second pressure ring (21). A high-strength spring (23) is placed on the outer ring of the connecting post (17).

2. The short beam bending fixture for a high-temperature chamber according to claim 1, characterized in that: The top of the mounting plate (12) and the slide (11) are provided with threaded holes, and the top of the mounting plate (12) and the slide (11) are provided with through holes evenly distributed. The bottom of the slide (11) is provided with an annular groove.

3. A short beam bending fixture for a high-temperature chamber according to claim 2, characterized in that: The annular groove is located on the outer ring of the threaded hole at the bottom of the slide (11), and the annular groove is connected to the through hole at the bottom of the slide (11).

4. A short beam bending fixture for a high-temperature chamber according to claim 3, characterized in that: The locking bolt (15) is screwed into the threaded hole of the mounting plate (12) and the slide (11). The first pressure ring (18) is located on the top of the mounting plate (12). The connecting column (17) is slidably disposed in the through hole and the annular groove. The second pressure ring (21) and the third anti-slip pad (22) are slidably disposed in the annular groove. The high-strength spring (23) is uniformly fixed between the second pressure ring (21) and the annular groove.

5. A short beam bending fixture for a high-temperature chamber according to claim 1, characterized in that: The bottom of the third anti-slip pad (22) and the second anti-slip pad (2) are in close contact with the bottom of the inner sidewall of the guide rail (1), and the bottom of the first anti-slip pad (19) is in close contact with the top of the mounting plate (12).

6. A short beam bending fixture for a high-temperature chamber according to claim 1, characterized in that: The mounting plate (12) is located on top of the guide rail (1), and a fixing sleeve (14) is provided at the bottom of the guide rail (1).

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