A high-temperature ceramic particle hardness testing device

Abstract

This utility model discloses a high-temperature ceramic particle hardness testing device, relating to the field of ceramic particle hardness testing technology. It includes a base plate and a testing platform. The testing platform is fixedly mounted on the upper surface of the base plate. A pressure sensor is fixedly mounted on the upper surface of the testing platform. Vertical plates are fixedly mounted on both sides of the upper surface of the base plate and on both sides of the testing platform. A top plate is fixedly mounted between the upper ends of the two vertical plates. A hydraulic cylinder is fixedly mounted on the upper surface of the top plate. The piston rod of the hydraulic cylinder extends to the lower side of the top plate and is fixedly connected to a pressure plate. Two side plates are fixedly mounted on the inner side of the middle of the vertical plates, and a rotating rod is rotatably mounted between the two side plates. This utility model can automatically shield the area around the testing platform during the testing process to prevent broken ceramic particle fragments from flying out, and can automatically open the shield after the testing is completed to facilitate the cleaning of broken ceramic particle fragments.

Description

Technical Field

[0001] This utility model relates to the field of ceramic particle hardness testing technology, specifically to a high-temperature ceramic particle hardness testing device. Background Technology

[0002] High-temperature ceramic particles have a wide range of applications in aerospace, machinery manufacturing, electronics and many other fields. Hardness is one of the important indicators for measuring their performance. When testing the hardness of high-temperature ceramic particles, indentation method is usually used. During the testing process, the ceramic particles may break and produce fragments.

[0003] Currently available high-temperature ceramic particle hardness testing devices lack effective protective measures during the testing process. Broken ceramic particle fragments can easily fly out of the testing area, potentially injuring operators and polluting surrounding equipment and the environment. Furthermore, cleaning up the broken ceramic particle fragments after testing is quite troublesome, requiring manual removal and installation of shielding materials, which not only wastes time and manpower but may also affect testing efficiency. Utility Model Content

[0004] In view of the problems existing in the above-mentioned high-temperature ceramic particle hardness testing devices, this utility model is proposed.

[0005] Therefore, the purpose of this invention is to provide a high-temperature ceramic particle hardness testing device, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-temperature ceramic particle hardness testing device includes a base plate and a testing platform. The testing platform is fixedly mounted on the upper surface of the base plate. A pressure sensor is fixedly mounted on the upper surface of the testing platform. Vertical plates are fixedly mounted on both sides of the upper surface of the base plate and on both sides of the testing platform. A top plate is fixedly mounted between the upper ends of the two vertical plates. A hydraulic cylinder is fixedly mounted on the upper surface of the top plate. The piston rod of the hydraulic cylinder extends to the lower side of the top plate and is fixedly connected to a pressure plate. Two side plates are fixedly mounted on the inner side of the middle of the vertical plates. A rotating rod is rotatably mounted between the two side plates. A rotating block is fixedly sleeved on the rod wall of the rotating rod. A U-shaped baffle is fixedly mounted on the side of the rotating block near the testing platform. An attraction mechanism is provided on the inner side of the base plate and the vertical plates to drive the U-shaped baffle to rotate around the rotating rod.

[0008] Preferably, the attraction mechanism includes a first U-shaped electromagnet and a second U-shaped electromagnet. The first U-shaped electromagnet is fixedly disposed on the inner side of the vertical plate, and the second U-shaped electromagnet is fixedly disposed on the upper surface of the bottom plate and located below the U-shaped baffle. U-shaped iron plates are fixedly disposed on both the upper and lower sides of the U-shaped baffle, and the lower U-shaped iron plate is magnetically connected to the second U-shaped electromagnet.

[0009] Preferably, the U-shaped shield is a carbon fiber plate.

[0010] Preferably, the upper surface of the pressure sensor is covered with a scratch-resistant cover.

[0011] Preferably, rubber pads are provided on the side of the U-shaped baffles on both sides that are close to each other.

[0012] Preferably, both the first U-shaped electromagnet and the second U-shaped electromagnet are threadedly locked to the corresponding vertical plate and the bottom plate by bolts.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] This invention utilizes an attraction mechanism comprised of a first U-shaped electromagnet, a second U-shaped electromagnet, and a U-shaped iron plate. Before testing begins, the second U-shaped electromagnet is energized, attracting the lower U-shaped iron plate and causing the U-shaped shielding plate to rotate around a pivot, thus shielding the area around the testing platform. After testing, the power to the second electromagnet is cut off, and the first electromagnet is energized. The upper U-shaped iron plate is attracted by the first U-shaped electromagnet, causing the U-shaped shielding plate to rotate and open around the pivot. This achieves automatic shielding during testing and automatic opening after testing, effectively preventing broken ceramic particles from flying out and facilitating the cleaning of debris, greatly improving the safety and efficiency of the testing process. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is a schematic diagram of the structure of a high-temperature ceramic particle hardness testing device proposed in this utility model.

[0017] Figure 2 for Figure 1 Internal structure diagram;

[0018] Figure 3 for Figure 1 A three-dimensional view of the U-shaped shield.

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

[0020] 1. Base plate; 2. Vertical plate; 3. Top plate; 4. Hydraulic cylinder; 5. Pressure plate; 6. Testing platform; 7. Pressure sensor; 8. U-shaped baffle plate; 9. U-shaped iron plate; 10. Rotating block; 11. First U-shaped electromagnet; 12. Second U-shaped electromagnet; 13. Side plate; 14. Rotating rod. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] This utility model discloses a high-temperature ceramic particle hardness testing device.

[0023] Reference Figure 1-3 A high-temperature ceramic particle hardness testing device includes a base plate 1 and a testing platform 6. The testing platform 6 is fixedly mounted on the upper surface of the base plate 1. A pressure sensor 7 is fixedly mounted on the upper surface of the testing platform 6. The upper surface of the pressure sensor 7 is covered with a scratch-resistant cover plate to provide good protection for the pressure sensor 7. Vertical plates 2 are fixedly mounted on both sides of the upper surface of the base plate 1 and on both sides of the testing platform 6. A top plate 3 is fixedly mounted between the upper ends of the two vertical plates 2. A hydraulic cylinder 4 is fixedly mounted on the upper surface of the top plate 3. The piston rod of the hydraulic cylinder 4 extends to the lower side of the top plate 3 and is fixedly connected to a pressure plate 5. Two side plates are fixedly mounted on the inner side of the middle of the vertical plates 2. 13. A rotating rod 14 is rotatably arranged between the two side plates 13. A rotating block 10 is fixedly sleeved on the rod wall of the rotating rod 14. A U-shaped shield 8 is fixedly arranged on the side of the rotating block 10 near the detection table 6. Rubber pads are arranged on the side of the U-shaped shield 8 on both sides to improve the shielding between the two shields 8. The U-shaped shield 8 is made of carbon fiber plate, which reduces weight while maintaining strong protective performance, so that the first U-shaped electromagnet 11 and the second U-shaped electromagnet 12 can easily attract the U-shaped iron plates 9 on both sides of the U-shaped shield 8. An attraction mechanism that drives the U-shaped shield 8 to rotate around the rotating rod 14 is arranged on the inner side of the bottom plate 1 and the vertical plate 2.

[0024] Reference Figure 1-3 The attraction mechanism includes a first U-shaped electromagnet 11 and a second U-shaped electromagnet 12. The first U-shaped electromagnet 11 is fixedly installed on the inner side of the vertical plate 2, and the second U-shaped electromagnet 12 is fixedly installed on the upper surface of the bottom plate 1 and located below the U-shaped baffle plate 8. U-shaped iron plates 9 are fixedly installed on both the upper and lower sides of the U-shaped baffle plate 8, and the lower U-shaped iron plate 9 is magnetically connected to the second U-shaped electromagnet 12.

[0025] Reference Figure 1-3The first U-shaped electromagnet 11 and the second U-shaped electromagnet 12 are both connected to the corresponding vertical plate 2 and the base plate 1 by bolts and threaded locking, which facilitates the disassembly and maintenance of the first U-shaped electromagnet 11 and the second U-shaped electromagnet 12.

[0026] In this invention, when in use, the high-temperature ceramic particles to be tested are first carefully placed on the surface of the pressure sensor 7 on the testing stage 6 to ensure that the ceramic particles are placed stably and within the effective detection area of ​​the pressure sensor 7.

[0027] Subsequently, the operator activates the control circuit connected to the second U-shaped electromagnet 12, energizing the second U-shaped electromagnet 12 to generate magnetism. Since the U-shaped shield 8 is fixed with a U-shaped iron plate 9 on its lower side, under the attraction of the second U-shaped electromagnet 12, the U-shaped shield 8 begins to rotate around the rotating rod 14. As the U-shaped shield 8 rotates, the U-shaped shields 8 on both sides gradually approach each other until they completely shield the area around the detection table 6, forming a relatively closed detection space. This effectively prevents ceramic particles from breaking and flying out during the detection process. During the rotation of the U-shaped shield 8, the rubber pads on its closest side press against each other, further enhancing the tightness of the shield.

[0028] After the U-shaped shield 8 completely covers the testing platform 6, the operator starts the hydraulic cylinder 4 on the top plate 3. The piston rod of the hydraulic cylinder 4 drives the pressure plate 5 to move slowly downward, gradually applying pressure to the high-temperature ceramic particles on the testing platform. The pressure sensor 7 monitors the magnitude of the applied pressure in real time and transmits the pressure data to the connected data acquisition and analysis equipment. During the pressure application process of the pressure plate 5, if the high-temperature ceramic particles break due to the force, the resulting fragments will be blocked by the U-shaped shield 8 within the testing area, thereby ensuring the safety of the operator and preventing the surrounding equipment and environment from being contaminated by the fragments.

[0029] When the pressure is applied to the predetermined value and maintained for a certain period of time, after the hardness test is completed, the operator first cuts off the power supply to the second U-shaped electromagnet 12, so that the second U-shaped electromagnet 12 loses its attraction to the U-shaped iron plate 9 on the lower side of the U-shaped shield 8. Then, the control circuit connected to the first U-shaped electromagnet 11 is activated, so that the first U-shaped electromagnet 11 is energized and generates magnetism. At this time, the U-shaped iron plate 9 on the upper side of the U-shaped shield 8 is attracted by the first U-shaped electromagnet 11, and the U-shaped shield 8 rotates in the opposite direction around the rotating rod 14, gradually opening the shield around the test table 6.

[0030] Once the U-shaped baffle 8 is fully opened, the operator can easily clean up the broken ceramic particle fragments on the testing table 6. After cleaning, the next high-temperature ceramic particle hardness test can be performed.

[0031] 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 ceramic particle hardness testing device, comprising a base plate (1) and a testing stage (6), characterized in that, The testing platform (6) is fixedly mounted on the upper surface of the base plate (1). A pressure sensor (7) is fixedly mounted on the upper surface of the testing platform (6). Vertical plates (2) are fixedly mounted on the upper surface of the base plate (1) and on both sides of the testing platform (6). A top plate (3) is fixedly mounted between the upper ends of the two vertical plates (2). A hydraulic cylinder (4) is fixedly mounted on the upper surface of the top plate (3). The piston rod of the hydraulic cylinder (4) extends to the lower side of the top plate (3) and is fixedly connected. There is a pressure plate (5), and two side plates (13) are fixedly installed on the inner side of the middle end of the vertical plate (2). A rotating rod (14) is rotatably installed between the two side plates (13). A rotating block (10) is fixedly sleeved on the rod wall of the rotating rod (14). A U-shaped shield (8) is fixedly installed on the side of the rotating block (10) near the detection table (6). An attraction mechanism is provided on the inner side of the bottom plate (1) and the vertical plate (2) to drive the U-shaped shield (8) to rotate around the rotating rod (14).

2. The high-temperature ceramic particle hardness testing device according to claim 1, characterized in that, The attraction mechanism includes a first U-shaped electromagnet (11) and a second U-shaped electromagnet (12). The first U-shaped electromagnet (11) is fixedly installed on the inner side of the vertical plate (2), and the second U-shaped electromagnet (12) is fixedly installed on the upper surface of the bottom plate (1) and located below the U-shaped baffle plate (8). U-shaped iron plates (9) are fixedly installed on both the upper and lower sides of the U-shaped baffle plate (8), and the lower U-shaped iron plate (9) is magnetically connected to the second U-shaped electromagnet (12).

3. The high-temperature ceramic particle hardness testing device according to claim 1, characterized in that, The U-shaped shield (8) is a carbon fiber plate.

4. The high-temperature ceramic particle hardness testing device according to claim 1, characterized in that, The upper surface of the pressure sensor (7) is covered with a scratch-resistant cover.

5. The high-temperature ceramic particle hardness testing device according to claim 1, characterized in that, Rubber pads are provided on the side of the U-shaped shields (8) on both sides.

6. The high-temperature ceramic particle hardness testing device according to claim 2, characterized in that, The first U-shaped electromagnet (11) and the second U-shaped electromagnet (12) are both connected to the corresponding vertical plate (2) and bottom plate (1) by bolts.

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