High-temperature tensile test device for sample testing
By using a threaded rod and ratchet limiting structure and a detachable fixing component, the problems of unstable clamping and cleaning in high-temperature tensile testing devices are solved, ensuring stable clamping and convenient cleaning of rubber products at high temperatures, and improving testing efficiency and data accuracy.
Patent Information
- Application Number
- CN202520051853.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-09
AI Technical Summary
Existing high-temperature tensile testing equipment is prone to loosening when clamping rubber products, resulting in unstable clamping. Furthermore, the rubber products are difficult to clean after melting, affecting the efficiency and effectiveness of the test.
The use of a threaded rod and ratchet limiting structure ensures clamping stability, and the clamping plate can be easily cleaned through a detachable fixing component; the heating rod provides uniform heating, and the combination of cylinder drive enables high-temperature tensile testing.
It enables stable clamping and convenient cleaning of rubber products at high temperatures, improving testing efficiency and data accuracy.
Smart Images
Figure CN223769961U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of high temperature tensile testing devices, and in particular relates to a high temperature tensile testing device for sample testing. Background Technology
[0002] Many rubber products are exposed to high-temperature environments during actual use. High-temperature tensile tests can simulate these actual working conditions and evaluate the performance of rubber products at high temperatures.
[0003] Most high-temperature tensile testing apparatuses have several drawbacks in use. For example, rubber products are typically clamped using threaded rods during tensile testing. If these rods loosen due to vibration, the rubber product may come loose, requiring re-secured installation, wasting time and reducing production efficiency. Furthermore, the rubber product may melt during the high-temperature tensile test, and the melted rubber residue on the clamping blocks is difficult to clean and can affect the clamping force. Therefore, we propose a new high-temperature tensile testing apparatus for sample testing. Utility Model Content
[0004] The purpose of this invention is to provide a high-temperature tensile testing device for sample testing, so as to solve the problems mentioned in the background art.
[0005] In view of this, the present invention provides a high-temperature tensile testing device for sample testing, including a housing and a sealing door, and further comprising:
[0006] A cylinder is fixedly installed on the top of the housing. The telescopic end of the cylinder passes through the top of the housing and extends into the inner cavity of the housing. A fixing column is fixedly installed at the bottom of the inner cavity of the housing. A disc is fixedly installed on both the telescopic end of the cylinder and the top of the fixing column. Several electric heating rods are fixedly installed on both sides of the disc in the inner cavity of the housing. The sealing door is rotatably installed on the front side of the housing.
[0007] Two sliding grooves are respectively opened in two discs. Two sliding blocks are slidably installed in each sliding groove. One end of each sliding block passes through the sliding groove and is fixedly installed with a sliding plate. A clamping plate is provided on one side of each of the four sliding plates. A threaded rod is rotatably installed in each of the two sliding grooves. One end of the threaded rod passes through the corresponding two sliding blocks and extends to the outside. The threaded rod is provided with two sections of threads with opposite directions, and the threaded rod is threadedly connected to the corresponding two sliding blocks. A ratchet is fixedly installed on the threaded rod.
[0008] Four sets of fixing components are located in the four sliding plates respectively, and are used to fix the positions of the four clamping plates respectively;
[0009] Two sets of limiting components are located in two disks respectively, and are used to limit the rotation of the two ratchet wheels respectively.
[0010] In this technical solution, when a rubber product needs to be tested, one end of the rubber product is first placed between the two clamping plates below. Then, the forward threaded rod is rotated. Under the action of the thread, the threaded rod drives the two sliding blocks below to slide and move closer to each other. The two sliding blocks drive the two sliding plates and the two clamping plates to slide and move closer to each other. Finally, the two clamping plates clamp one end of the rubber product. Then, the other end of the rubber product is clamped through the above operation. The set limiting component prevents the ratchet and the threaded rod from rotating in the opposite direction, ensuring the stability of the clamping and ensuring the clamping stability of the rubber product during the test.
[0011] After the rubber product is clamped, the sealing door is closed. Then, several electric heating rods are activated to heat the rubber product. Finally, the cylinder is activated to pull the other end of the rubber product, ensuring that the rubber product can be subjected to tensile testing in a high-temperature environment.
[0012] When melted rubber residue remains on the clamping plate, the clamping plate can be removed by the set fixing components, making it easy to clean the melted rubber on the clamping plate. The clamping plate can then be reinstalled by reversing the above operation, making the operation convenient and quick.
[0013] In the above technical solution, the fixing component further includes:
[0014] A limiting groove is formed inside the sliding plate. A fixing plate that is fixed to the clamping plate is inserted into the limiting groove. Limiting posts are slidably installed in the limiting groove and on both sides of the fixing plate. The side of the two limiting posts that are close to each other extends into the fixing plate and is inserted into the fixing plate. Several springs that are fixed to the inner wall of the limiting groove are fixedly installed on the side of the two limiting posts that are far apart from each other.
[0015] A sliding bar is slidably installed in a limiting groove and located above a fixed plate. The upper end of the sliding bar passes through the limiting groove and extends to the outside. Two connecting rods are rotatably installed at the lower end of the sliding bar, and the lower ends of the two connecting rods are rotatably connected to two limiting posts respectively.
[0016] In this technical solution, when the rubber product melts and remains on the clamping plate, the sliding bar is pressed down first. The sliding bar pushes the two connecting rods to rotate. The two connecting rods drive the two limiting posts to slide and move away from each other. At the same time, several springs are compressed and contracted. When the two limiting posts are close to each other on one side and disengage from the fixed plate, the operator can remove the clamping plate to facilitate cleaning of the melted rubber product on the clamping plate. The clamping plate can be reinstalled by reversing the above operation. The operation is convenient and quick.
[0017] In the above technical solution, the limiting component further includes:
[0018] A pawl is rotatably mounted in a sliding groove and located on one side of a ratchet. One end of the pawl extends between two adjacent teeth of the ratchet. A fixed plate is fixedly mounted on one end of the pawl. One end of the fixed plate passes through the sliding groove and extends to the outside. A torsion spring is sleeved on the fixed plate. The two ends of the torsion spring are fixed to the fixed plate and the inner wall of the sliding groove, respectively. The fixed plate is rotatably connected to the sliding groove.
[0019] In this technical solution, when testing a rubber product, one end of the rubber product is first placed between the two clamping plates below. Then, the forward-rotating threaded rod is rotated. Under the action of the thread, the threaded rod drives the two sliding blocks below to slide and move closer to each other. The two sliding blocks respectively drive the two sliding plates and the two clamping plates to slide and move closer to each other. Finally, the two clamping plates clamp one end of the rubber product. Then, the other end of the rubber product is clamped through the above operation. At the same time, the rotation of the threaded rod will drive the ratchet to rotate forward. The forward rotation of the ratchet will lift one end of the pawl. The pawl will drive the fixed plate to rotate forward. At the same time, the torsion spring will be torsion. When the threaded rod stops rotating, under the action of the torsion force of the torsion spring, the fixed plate will rotate in the opposite direction. The fixed plate will drive the pawl to rotate in the opposite direction. One end of the pawl will re-insert between the two adjacent teeth of the ratchet, so that the ratchet and the threaded rod cannot rotate in the opposite direction, ensuring the stability of clamping and ensuring the clamping stability of the rubber product during testing.
[0020] In the above technical solution, the ratchet is rotatably connected to the sliding groove, and the telescopic end of the cylinder is slidably connected to the housing.
[0021] In this technical solution, the ratchet is ensured to rotate within the sliding groove, and the telescopic end of the cylinder is guaranteed to slide within the housing.
[0022] In the above technical solution, further, several of the electric heating rods are distributed at equal intervals within the shell.
[0023] In this technical solution, uniform heating of the rubber product is ensured.
[0024] In the above technical solution, further, the inner cavity of the shell is engraved with two sets of scale lines between several electric heating rods, and a fixing strip is fixedly installed on the upper disc. The fixing strip is slidably connected to the shell and is located between the two sets of scale lines.
[0025] In this technical solution, the fixed strip is slid by the disc, and the staff can obtain the test data of high temperature tensile strength of the rubber product by observing the two sets of scale lines.
[0026] In the above technical solution, furthermore, a plurality of grooves are provided on one side of the clamping plate.
[0027] In this technical solution, the groove can increase the contact area between the clamping plate and the rubber product. When the two clamping plates approach each other at one end of the rubber product, the rubber product will be partially embedded in the groove.
[0028] The beneficial effects of this utility model are:
[0029] 1. This high-temperature tensile testing device is used for sample testing. When testing a rubber product, one end of the rubber product is first placed between the two clamping plates located below. Then, the forward threaded rod is rotated. Under the action of the thread, the threaded rod drives the two sliding blocks located below to slide and move closer to each other. The two sliding blocks respectively drive the two sliding plates and the two clamping plates to slide and move closer to each other. Finally, the two clamping plates clamp one end of the rubber product. Then, the other end of the rubber product is clamped by the above operation. Through the setting limit component, the ratchet and the threaded rod cannot rotate in the opposite direction, ensuring the clamping stability of the rubber product during the test.
[0030] 2. The high-temperature tensile testing device used for this sample test allows the operator to remove the clamping plate when the rubber product melts and remains on the clamping plate, thanks to the fixed components. This facilitates cleaning of the melted rubber product on the clamping plate, and the clamping plate can be reinstalled through the reverse operation described above. The operation is convenient and quick. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0032] Figure 2 This is a schematic diagram of the cross-sectional structure of the sealing door of this utility model;
[0033] Figure 3 This is one of the schematic diagrams of the cross-sectional structure of the disc of this utility model;
[0034] Figure 4 This is the utility model Figure 3 Enlarged structural diagram at point A;
[0035] Figure 5This is the second schematic diagram of the cross-sectional structure of the disc of this utility model;
[0036] Figure 6 This is a schematic diagram of the cross-sectional structure of the sliding plate of this utility model;
[0037] Figure 7 This is a schematic diagram of the cross-sectional structure of the fixing plate of this utility model;
[0038] Figure 8 This is a schematic diagram of the clamping plate area structure of this utility model.
[0039] The markings in the diagram are as follows:
[0040] 1. Housing; 2. Sealing door; 3. Electric heating rod; 4. Cylinder; 5. Fixing column; 6. Disc; 7. Sliding groove; 8. Sliding block; 9. Sliding plate; 10. Clamping plate; 11. Threaded rod; 12. Ratchet; 13. Pad; 14. Fixing disc; 15. Torsion spring; 16. Limiting groove; 17. Fixing plate; 18. Limiting column; 19. Spring; 20. Connecting rod; 21. Sliding strip; 22. Scale line; 23. Fixing strip. Detailed Implementation
[0041] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.
[0042] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0043] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0044] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0045] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
[0046] Example 1:
[0047] Please see Figure 1 - Figure 8 As shown, this embodiment provides a high-temperature tensile testing device for sample testing, including a housing 1 and a sealing door 2, and further including:
[0048] Cylinder 4 is fixedly installed on the top of housing 1. The telescopic end of cylinder 4 passes through the top of housing 1 and extends into the inner cavity of housing 1. A fixing column 5 is fixedly installed at the bottom of the inner cavity of housing 1. A disc 6 is fixedly installed on both the telescopic end of cylinder 4 and the top of the fixing column 5. Several electric heating rods 3 are fixedly installed on both sides of the disc 6 in the inner cavity of housing 1. A sealing door 2 is rotatably installed on the front side of housing 1.
[0049] Two sliding grooves 7 are respectively opened in two discs 6. Two sliding blocks 8 are slidably installed in the sliding grooves 7. One end of each sliding block 8 passes through the sliding groove 7 and is fixedly installed with a sliding plate 9. A clamping plate 10 is provided on one side of each of the four sliding plates 9. A threaded rod 11 is rotatably installed in each of the two sliding grooves 7. One end of the threaded rod 11 passes through the corresponding two sliding blocks 8 and extends to the outside. The threaded rod 11 is provided with two sections of threads with opposite directions of rotation, and the threaded rod 11 is threadedly connected to the corresponding two sliding blocks 8. A ratchet 12 is fixedly installed on the threaded rod 11.
[0050] Four sets of fixing components are located in the four sliding plates 9 respectively, and are used to fix the positions of the four clamping plates 10 respectively;
[0051] Two sets of limiting components are located in the two discs 6 respectively, and are used to limit the rotation of the two ratchet wheels 12.
[0052] When testing a rubber product, one end of the rubber product is first placed between the two clamping plates 10 below. Then, the forward threaded rod 11 is rotated. Under the action of the thread, the threaded rod 11 drives the two sliding blocks 8 below to slide and move closer to each other. The two sliding blocks 8 respectively drive the two sliding plates 9 and the two clamping plates 10 to slide and move closer to each other. Finally, the two clamping plates 10 clamp one end of the rubber product. Then, the other end of the rubber product is clamped by the above operation. Through the setting limit component, the ratchet 12 and the threaded rod 11 cannot rotate in the opposite direction, ensuring the stability of clamping and ensuring the clamping stability of the rubber product during the test.
[0053] After the rubber product is clamped, the sealing door 2 is closed. Then, several electric heating rods 3 are activated to heat the rubber product. Finally, the cylinder 4 is activated to pull the other end of the rubber product, ensuring that the rubber product can be subjected to a tensile test in a high-temperature environment.
[0054] When the rubber product melts and remains on the clamping plate 10, the staff can remove the clamping plate 10 through the fixed components, making it convenient to clean the melted rubber product on the clamping plate 10. Then, the clamping plate 10 can be reinstalled through the above reverse operation, which is convenient and quick.
[0055] In this embodiment, the fixing component includes:
[0056] A limiting groove 16 is formed in the sliding plate 9. A fixing plate 17, which is fixed to the clamping plate 10, is inserted into the limiting groove 16. Limiting posts 18 are slidably installed in the limiting groove 16 and on both sides of the fixing plate 17. The side of the two limiting posts 18 that are close to each other extends into the fixing plate 17 and is inserted into the fixing plate 17. Several springs 19 that are fixed to the inner wall of the limiting groove 16 are fixedly installed on the side of the two limiting posts 18 that are far apart from each other.
[0057] The sliding bar 21 is slidably installed in the limiting groove 16 and located above the fixing plate 17. The upper end of the sliding bar 21 passes through the limiting groove 16 and extends to the outside. The lower end of the sliding bar 21 is rotatably installed with two connecting rods 20. The lower ends of the two connecting rods 20 are rotatably connected to two limiting posts 18 respectively.
[0058] When the melted rubber product remains on the clamping plate 10, the sliding bar 21 is pressed down first. The sliding bar 21 pushes the two connecting rods 20 to rotate. The two connecting rods 20 respectively drive the two limiting posts 18 to slide and move away from each other. At the same time, several springs 19 are compressed and contracted. When the two limiting posts 18 are close to each other on the side that are detached from the fixed plate 17, the operator can take out the clamping plate 10 to facilitate cleaning of the melted rubber product on the clamping plate 10. The clamping plate 10 can be reinstalled by reversing the above operation. The operation is convenient and quick.
[0059] In this embodiment, the limiting component includes:
[0060] Pawl 13 is rotatably mounted in sliding groove 7 and located on one side of ratchet 12. One end of pawl 13 extends to the space between two adjacent teeth of ratchet 12. A fixed plate 14 is fixedly mounted on one end of pawl 13. One end of fixed plate 14 passes through sliding groove 7 and extends to the outside. A torsion spring 15 is sleeved on fixed plate 14. Both ends of torsion spring 15 are fixed to fixed plate 14 and inner wall of sliding groove 7 respectively. Fixed plate 14 is rotatably connected to sliding groove 7.
[0061] When testing a rubber product, one end of the rubber product is first placed between the two clamping plates 10 located below. Then, the forward-rotating threaded rod 11 is rotated. Under the action of the thread, the threaded rod 11 drives the two sliding blocks 8 located below to slide and move closer to each other. The two sliding blocks 8 respectively drive the two sliding plates 9 and the two clamping plates 10 to slide and move closer to each other. Finally, the two clamping plates 10 clamp one end of the rubber product. Then, the other end of the rubber product is clamped by the above operation. At the same time, the rotation of the threaded rod 11 drives the ratchet. When the ratchet 12 rotates in the forward direction, it will lift one end of the pawl 13. The pawl 13 will drive the fixed plate 14 to rotate in the forward direction. At the same time, the torsion spring 15 will be torsion. When the threaded rod 11 stops rotating, under the torsional force of the torsion spring 15, the fixed plate 14 will rotate in the reverse direction. The fixed plate 14 will drive the pawl 13 to rotate in the reverse direction. One end of the pawl 13 will be re-inserted between two adjacent teeth of the ratchet 12, so that the ratchet 12 and the threaded rod 11 cannot rotate in the reverse direction, ensuring the stability of clamping and ensuring the clamping stability of the rubber product during the test.
[0062] Example 2:
[0063] This embodiment provides a high-temperature tensile testing device for sample testing, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0064] In this embodiment, the ratchet 12 is rotatably connected to the sliding groove 7, and the telescopic end of the cylinder 4 is slidably connected to the housing 1.
[0065] Specifically, this ensures that the ratchet 12 can rotate within the sliding groove 7, and that the telescopic end of the cylinder 4 can slide within the housing 1.
[0066] Example 3:
[0067] This embodiment provides a high-temperature tensile testing device for sample testing, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0068] In this embodiment, several electric heating rods 3 are distributed at equal intervals inside the housing 1.
[0069] Among these measures, it is essential to ensure that the rubber products are heated evenly.
[0070] Example 4:
[0071] This embodiment provides a high-temperature tensile testing device for sample testing, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0072] In this embodiment, the inner cavity of the housing 1 is engraved with two sets of scale lines 22 between several electric heating rods 3, and a fixing strip 23 is fixedly installed on the upper disc 6. The fixing strip 23 is slidably connected to the housing 1 and is located between the two sets of scale lines 22.
[0073] In this process, by sliding the fixed strip 23 driven by the disc 6, the staff can obtain the test data of high temperature tensile strength of the rubber product by observing the two sets of scale lines 22.
[0074] Example 5:
[0075] This embodiment provides a high-temperature tensile testing device for sample testing, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0076] In this embodiment, a plurality of grooves are provided on one side of the clamping plate 10.
[0077] The groove can increase the contact area between the clamping plate 10 and the rubber product. When the two clamping plates 10 approach each other at one end of the rubber product, the rubber product will be partially embedded in the groove.
[0078] Working principle: When testing a rubber product, first place one end of the rubber product between the two clamping plates 10 located below. Then rotate the forward threaded rod 11. Under the action of the thread, the threaded rod 11 drives the two sliding blocks 8 located below to slide and move closer to each other. The two sliding blocks 8 respectively drive the two sliding plates 9 and the two clamping plates 10 to slide and move closer to each other. Finally, the two clamping plates 10 clamp one end of the rubber product. Then, through the above operation, clamp the other end of the rubber product. At the same time, the rotation of the threaded rod 11 will drive the ratchet... When the ratchet 12 rotates in the forward direction, it will lift one end of the pawl 13. The pawl 13 will drive the fixed plate 14 to rotate in the forward direction. At the same time, the torsion spring 15 will be torsion. When the threaded rod 11 stops rotating, under the torsional force of the torsion spring 15, the fixed plate 14 will rotate in the reverse direction. The fixed plate 14 will drive the pawl 13 to rotate in the reverse direction. One end of the pawl 13 will re-insert between two adjacent teeth of the ratchet 12, so that the ratchet 12 and the threaded rod 11 cannot rotate in the reverse direction, ensuring the stability of clamping and ensuring the clamping stability of the rubber product during the test.
[0079] After the rubber product is clamped, the sealing door 2 is closed. Then, several electric heating rods 3 are activated to heat the rubber product. Finally, the cylinder 4 is activated to pull the other end of the rubber product, ensuring that the rubber product can be subjected to a tensile test in a high-temperature environment. The fixing strip 23 is slid by the disc 6. By observing the two sets of scale lines 22, the staff can obtain the test data of the high-temperature tensile test of the rubber product.
[0080] When the melted rubber product remains on the clamping plate 10, first press down on the sliding bar 21. The sliding bar 21 pushes the two connecting rods 20 to rotate. The two connecting rods 20 respectively drive the two limiting posts 18 to slide and move away from each other. At the same time, several springs 19 are compressed and contracted. When the two limiting posts 18 are close to each other on the side that are detached from the fixed plate 17, the operator can take out the clamping plate 10 to facilitate cleaning of the melted rubber product on the clamping plate 10. The clamping plate 10 can be reinstalled by reversing the above operation. The operation is convenient and quick.
[0081] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.
Claims
1. A high-temperature tensile testing device for specimen testing, comprising a housing (1) and a seal door (2), characterized in that, Also includes: The cylinder (4) is fixedly installed on the top of the shell (1), the telescopic end of the cylinder (4) penetrates through the top of the shell (1) and extends to the inner cavity of the shell (1), the inner cavity of the shell (1) is fixedly installed with a fixed column (5), the telescopic end of the cylinder (4) is fixedly installed with a disc (6), the inner cavity of the shell (1) is fixedly installed with a plurality of electric heating rods (3) on both sides of the disc (6), and the sealing door (2) is rotatably installed on the front side of the shell (1); Two sliding grooves (7) are formed in the two discs (6), two sliding blocks (8) are slidably installed in the sliding grooves (7), one end of each of the two sliding blocks (8) penetrates the sliding groove (7) and is fixedly installed with a sliding plate (9), one side of each of the four sliding plates (9) is provided with a clamping plate (10), a threaded rod (11) is rotatably installed in each of the two sliding grooves (7), one end of the threaded rod (11) penetrates the corresponding two sliding blocks (8) and extends to the outside, the threaded rod (11) is provided with two threads with opposite rotation directions, and the threaded rod (11) is in threaded connection with the corresponding two sliding blocks (8), and the threaded rod (11) is fixedly installed with a ratchet wheel (12); Four sets of fixing assemblies are arranged in the four sliding plates (9) respectively, and are used for fixing the positions of the four clamping plates (10) respectively; Two sets of limiting assemblies are arranged in the two discs (6) respectively, and are used for limiting the rotation of the two ratchet wheels (12).
2. A high temperature tensile testing apparatus for testing a specimen according to claim 1, wherein The fixing assembly comprises: A limiting groove (16) is formed in the sliding plate (9), a fixed plate (17) fixedly connected with the clamping plate (10) is inserted and installed in the limiting groove (16), limiting columns (18) are slidably installed in the limiting groove (16) on both sides of the fixed plate (17), one side of each of the two limiting columns (18) extending into the fixed plate (17) is away from each other, and the one side of each of the two limiting columns (18) extending into the fixed plate (17) is in plug-in cooperation with the fixed plate (17), and a plurality of springs (19) fixedly connected with the inner wall of the limiting groove (16) are fixedly installed on the side of each of the two limiting columns (18) away from each other; A sliding bar (21) is slidably installed in the limiting groove (16) above the fixed plate (17), the upper end of the sliding bar (21) penetrates the limiting groove (16) and extends to the outside, and two connecting rods (20) are rotatably installed at the lower end of the sliding bar (21). The lower end of each of the two connecting rods (20) is rotatably connected with the limiting column (18).
3. A high temperature tensile testing apparatus for testing a specimen according to claim 2, wherein The limiting assembly comprises: The pawl (13) is rotatably installed in the sliding groove (7) and located at one side of the ratchet wheel (12), one end of the pawl (13) extends to between two adjacent teeth of the ratchet wheel (12), one end of the pawl (13) is fixedly installed with a fixed disc (14), one end of the fixed disc (14) penetrates through the sliding groove (7) and extends to the outside, the fixed disc (14) is sleeved with a torsion spring (15), both ends of the torsion spring (15) are fixed with the fixed disc (14) and the inner wall of the sliding groove (7) respectively, and the fixed disc (14) is rotatably connected with the sliding groove (7).
4. The high temperature tensile testing apparatus for specimen testing of claim 1, wherein The ratchet wheel (12) is rotatably connected with the sliding groove (7), and the telescopic end of the air cylinder (4) is slidably connected with the shell (1).
5. The high temperature tensile testing apparatus for specimen testing of claim 1, wherein The electric heating rods (3) are equidistantly distributed in the shell (1).
6. A high temperature tensile testing apparatus for testing a specimen according to claim 1, wherein Two groups of scale lines (22) are engraved in the inner cavity of the shell (1) and between the electric heating rods (3), the fixed strip (23) is fixedly installed on the upper disc (6), the fixed strip (23) is slidably connected with the shell (1), and the fixed strip (23) is located between the two groups of scale lines (22).
7. The high temperature tensile testing apparatus for specimen testing of claim 1, wherein A plurality of recesses are formed in one side of the clamping plate (10).