A high-temperature-resistant rubber endurance testing device

Abstract

The utility model discloses a kind of high-temperature-resistant rubber endurance testing device, including test box, the inner wall of test box is equipped with the isolating plate of equidistance distribution, the inside of test box is equipped with the test cavity of equidistance distribution by isolating plate, the inner wall of one end of test cavity is fixed with positioning column, the top one end of positioning column is fixed with first pull block, the outer wall of the other end of test cavity is fixed with positioning sleeve by opening. The utility model simulates the working state of high-temperature environment and alternating stress condition, effectively evaluates the key performance indicators such as tensile strength retention rate, breaking elongation and compression permanent deformation rate of rubber ring under extreme temperature, the design of multiple detection cavities can be compatible with different specifications of rubber ring sample, cooperate with the real-time monitoring of digital tensiometer and digital thermometer, make the accurate of test data, provide reliable basis for material performance optimization.

Description

Technical Field

[0001] This utility model relates to the field of high temperature resistance testing technology for rubber, and specifically to a high temperature resistant rubber durability testing device. Background Technology

[0002] In the application of rubber materials, rubber rings, as key sealing components, are widely used in extreme operating environments such as aerospace, automotive electronics, and industrial equipment, where they operate under high temperature, high pressure, and alternating loads. However, traditional rubber durability testing equipment has significant technical limitations and cannot meet the needs of modern industry for accurate evaluation of material properties.

[0003] Existing testing equipment largely relies on single-environment simulation methods, failing to simultaneously reproduce real-world conditions under the coupled effects of high temperature and alternating stress. This makes it difficult to accurately assess core performance indicators such as tensile strength retention, elongation at break, and compression set under extreme temperatures. Furthermore, traditional devices lack compatibility with multi-specification samples; their fixed test chamber structure makes it difficult to adapt to rubber rings of different diameters and thicknesses, resulting in insufficient testing efficiency. Therefore, we propose a high-temperature resistant rubber durability testing device. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature resistant rubber durability testing device to address the aforementioned shortcomings in the technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature resistant rubber durability testing device, comprising a test chamber, wherein the inner wall of the test chamber is equipped with equally spaced isolation plates, and the interior of the test chamber is provided with equally spaced test chambers through the isolation plates. A positioning post is fixedly provided on the inner wall of one end of the test chamber, and a first pull block is fixedly provided on the top end of the positioning post. A positioning sleeve is fixedly provided on the outer wall of the other end of the test chamber through an opening. A sliding post is slidably connected to the inner wall of the positioning sleeve. A second pull block is fixedly provided on the top end of the sliding post of the test chamber. A digital tensile gauge is fixedly provided on the outer wall of the other end of the sliding post. Synchronous limit push rod motors are fixedly provided on both outer walls of the test chamber.

[0006] Preferably, a positioning plate is fixedly provided at the output end of the two synchronous limit push rod motors, and the other end of the digital tension gauge is fixedly connected to the outer wall of the positioning plate.

[0007] Preferably, a heating plate is installed on the bottom inner wall of the test chamber.

[0008] Preferably, a positioning plate is fixedly provided on the top outer wall of the test chamber, and digital thermometers are installed on the top outer wall of the positioning plate at equal intervals, with the detection ends of the digital thermometers located inside the detection chamber.

[0009] Preferably, one side of the outer wall of the digital thermometer is movably connected with equally spaced sealing cover plates via a hinge, and a lifting handle is installed at the top end of each sealing cover plate, with the sealing cover plates located at the top of the detection chamber.

[0010] Preferably, the sealing cover is made of high-temperature resistant transparent glass material.

[0011] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0012] By simulating the working conditions of high temperature environment and alternating stress, the key performance indicators of rubber rings such as tensile strength retention rate, elongation at break and compression set rate under extreme temperature are effectively evaluated. The design of multiple test chambers can be compatible with rubber ring samples of different specifications. With the real-time monitoring of digital tensile tester and digital thermometer, the test data is accurate and provides a reliable basis for material performance optimization.

[0013] The synergistic effect of the positioning column and the sliding column, combined with the synchronous limit push rod motor driving the positioning plate, ensures that different rubber ring samples between the first and second pull blocks remain synchronized during the stretching process, significantly improving product development efficiency and testing quality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a three-dimensional structural diagram of a high-temperature resistant rubber durability testing device according to the present invention;

[0016] Figure 2 This is a schematic diagram of the unfolded structure of a high-temperature resistant rubber durability testing device according to the present invention;

[0017] Figure 3 This is a schematic diagram of the test chamber structure of a high-temperature rubber durability testing device according to the present invention;

[0018] Figure 4 This is a schematic diagram of the synchronous limit push rod motor structure of a high-temperature resistant rubber durability testing device according to this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1 Test box, 2 Isolation plate, 3 Positioning column, 4 First pull block, 5 Positioning sleeve, 6 Sliding column, 7 Second pull block, 8 Digital tension gauge, 9 Positioning plate, 10 Synchronous limit push rod motor, 11 Heating plate, 12 Positioning plate, 13 Digital thermometer, 14 Sealing cover plate, 15 Lifting handle. Detailed Implementation

[0021] The following drawings will disclose several embodiments of this utility model. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these physical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0022] Refer to the instruction manual appendix Figure 1-4 A high-temperature resistant rubber durability testing device includes a test chamber 1. The inner wall of the test chamber 1 is equipped with equally spaced isolation plates 2, which divide the interior of the test chamber 1 into multiple equally spaced test chambers. A positioning post 3 is fixedly provided on the inner wall of one end of each test chamber. A first pull block 4 is fixedly provided on the top end of the positioning post 3 for connecting to one end of a rubber ring. A positioning sleeve 5 is fixedly provided on the outer wall of the other end of the test chamber through an opening. A sliding post 6 is slidably connected to the inner wall of the positioning sleeve 5. A second pull block 7 is fixedly provided on the top end of the sliding post 6 for connecting to the other end of the rubber ring. A digital tensile gauge 8 is fixedly provided on the outer wall of the other end of the sliding post 6 for measuring the tensile force generated during the stretching process.

[0023] Synchronous limit push rod motors 10 are fixedly installed on both outer walls of the test chamber 1. A positioning plate 9 is fixedly installed at the output end of each of the two synchronous limit push rod motors 10. The other end of each digital tension gauge 8 is fixedly connected to the outer wall of the positioning plate 9. When the synchronous limit push rod motors 10 operate, they push the positioning plate 9 to move, thereby pulling the second pull block 7 through the digital tension gauge 8 and the sliding column 6, thus stretching the rubber ring. An electric heating plate 11 is installed on the bottom inner wall of the test chamber to heat the rubber ring inside. A positioning plate 12 is fixedly installed on one side of the top outer wall of the test chamber 1. Digital thermometers 13 are installed at equal intervals on the top outer wall of the position plate 12. The detection ends of the digital thermometers 13 are located inside each test chamber to accurately measure the temperature of each test chamber. One side outer wall of the digital thermometers 13 is connected to equally spaced sealing covers 14 by hinges. A lifting handle 15 is installed at the top end of the sealing cover 14 for easy opening and closing. The sealing covers 14 are located on the top of each test chamber and are made of high-temperature resistant transparent glass material, which can withstand high-temperature environment and allow clear observation of the situation inside the test chamber. Example 1

[0024] Based on Example 1, when conducting a high-temperature rubber durability test, the rubber ring is first placed between the first pull block 4 and the second pull block 7. Then, the sealing cover 14 is closed, and the heating plate 11 is activated to heat the test chamber. At the same time, the temperature is monitored in real time by the digital thermometer 13. When the temperature reaches the set value, the synchronous limit push rod motor 10 is activated to push the positioning plate 9 to move. Then, the rubber ring is subjected to a tensile test by the digital tension gauge 8 and the sliding column 6. During the test, the state of the rubber ring can be observed by observing the sealing cover 14, and the reading of the digital tension gauge 8 can be recorded to evaluate the durability of the rubber ring. Example 2

[0025] Based on Example 1, in order to compare the durability performance of the rubber ring at different temperatures, the heating temperature of the heating plate 11 can be adjusted, and tests can be conducted at different temperatures. The test steps at each temperature are the same as in Example 1. By recording and analyzing the readings of the digital tensile tester 8 at different temperatures, the influence of temperature on the durability performance of the rubber ring can be evaluated. Example 3

[0026] Based on Example 1, in order to test the durability of the rubber ring under long-term high-temperature environment, a long test time can be set and the heating temperature of the heating plate 11 can be kept constant. During the test, the state of the rubber ring under the sealing cover plate 14 is observed periodically and the reading of the digital tensile tester 8 is recorded. Through long-term high-temperature durability test, the performance stability of the rubber ring during long-term use can be evaluated. Example 4

[0027] Based on Example 1, in order to simulate the reciprocating tension of the rubber ring in actual use, especially the reciprocating tension effect under high temperature environment, the following test was conducted. First, the rubber ring was placed between the first pull block 4 and the second pull block 7, and the sealing cover plate 14 was closed. The electric heating plate 11 was started to heat the test chamber until the temperature reached the preset high temperature value. The temperature was monitored and confirmed to be stable in real time by the digital thermometer 13. Then, the synchronous limit push rod motor 10 was started to make it reciprocate at the set frequency and stroke. Under the push of the synchronous limit push rod motor 10 The positioning plate 9 drives the digital tension gauge 8 and the sliding column 6 to move back and forth, thereby stretching the rubber ring back and forth. By observing the sealing cover plate 14, the process of the rubber ring being stretched back and forth at high temperature can be clearly seen. During the back and forth stretching process, the digital tension gauge 8 records the changes in tension generated during the stretching process in real time. By analyzing these tension data, the durability and elastic recovery ability of the rubber ring under high temperature back and forth stretching can be evaluated. At the same time, it is also possible to observe whether the rubber ring deforms, cracks or breaks during the back and forth stretching process, so as to further evaluate its durability.

[0028] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-temperature resistant rubber durability testing device, comprising a test chamber (1), characterized in that: The inner wall of the test box (1) is equipped with equally spaced isolation plates (2). The interior of the test box (1) is provided with equally spaced test chambers through the isolation plates (2). A positioning column (3) is fixedly provided on the inner wall of one end of the test chamber. A first pull block (4) is fixedly provided on the top end of the positioning column (3). A positioning sleeve (5) is fixedly provided on the outer wall of the other end of the test chamber through an opening. A sliding column (6) is slidably connected to the inner wall of the positioning sleeve (5). A second pull block (7) is fixedly provided on the top end of the sliding column (6) of the test chamber. A digital tension gauge (8) is fixedly provided on the outer wall of the other end of the sliding column (6). Synchronous limit push rod motors (10) are fixedly provided on the outer walls of both sides of the test box (1).

2. The high-temperature rubber durability testing device according to claim 1, characterized in that: A positioning plate (9) is fixedly provided at the output end of the two synchronous limit push rod motors (10), and the other end of the digital tension gauge (8) is fixedly connected to the outer wall of the positioning plate (9).

3. The high-temperature rubber durability testing device according to claim 1, characterized in that: A heating plate (11) is installed on the bottom inner wall of the test chamber.

4. The high-temperature rubber durability testing device according to claim 1, characterized in that: A positioning plate (12) is fixedly provided on the outer wall of the top side of the test box (1). Digital thermometers (13) are installed on the top outer wall of the positioning plate (12) at equal intervals. The detection ends of the digital thermometers (13) are located inside the detection cavity.

5. The high-temperature rubber durability testing device according to claim 4, characterized in that: The digital thermometer (13) has a hinged outer wall with equally spaced sealing covers (14). A lifting handle (15) is installed at the top end of the sealing cover (14). The sealing covers (14) are located at the top of the detection chamber.

6. The high-temperature rubber durability testing device according to claim 5, characterized in that: The sealing cover (14) is made of high-temperature resistant transparent glass material.

Images