High-temperature crystal material strength testing device

Abstract

A high-temperature crystal material strength testing device relates to the technical field of high-temperature crystal material testing equipment and comprises a rack, a lower workbench, a guide column, a lifting cylinder, an upper workbench, a working barrel, a telescopic cylinder, a first clamping assembly, a second clamping assembly and a heat preservation barrel. The first clamping assembly and the second clamping assembly are oppositely arranged, and the first clamping assembly is fixed to the lower end of the working barrel and used for clamping the upper end of a to-be-tested sample; the second clamping assembly is fixed to the upper side of the lower workbench and used for clamping the lower end of the sample. The heat preservation cylinder and the working cylinder are connected in an up-down sliding mode. Wherein in the non-working state, the heat preservation barrel is arranged on the outer side of the working barrel in a sleeving mode; in the working state, the heat preservation barrel moves downwards to the upper end of the heat preservation barrel to be connected with the first clamping assembly, the lower end of the heat preservation barrel is connected with the second clamping assembly, and a cavity is defined by the heat preservation barrel, the first clamping assembly and the second clamping assembly. The device can be used for testing the tensile strength of the high-temperature crystal material sample in a high-temperature environment.

Description

Technical Field

[0001] This invention relates to the field of high-temperature crystal material testing equipment, specifically to a high-temperature crystal material strength testing device. Background Technology

[0002] High-temperature crystals are materials that maintain stable crystal structures and excellent mechanical / physical properties at high temperatures. Their core advantages are high-temperature resistance, creep resistance, and minimal strength decay at high temperatures. High-temperature crystal materials are used in aerospace, energy, and industrial manufacturing, and their strength is a key indicator determining their application feasibility and service safety. If the tensile strength of the material is insufficient at high temperatures, it will cause premature fracture and failure of the parts.

[0003] Therefore, there is a need to develop a testing device that can be used to test the tensile strength of high-temperature crystalline materials under high-temperature conditions. Summary of the Invention

[0004] The present invention provides a high-temperature crystalline material strength testing device to address the above-mentioned technical problems existing in the prior art, which can be used to test the tensile strength properties of high-temperature crystalline material samples under high-temperature environment.

[0005] To achieve the above technical objectives, this invention provides a high-temperature crystalline material strength testing device, comprising: a frame; a lower worktable fixed to the upper side of the frame; a plurality of guide columns longitudinally arranged on the upper side of the frame; an upper worktable slidably connected to each of the guide columns, the lower side of the upper worktable having a working cylinder; a lifting cylinder, the lower end of the lifting cylinder being connected to the frame, the upper end of the lifting cylinder being connected to the upper worktable, for driving the upper worktable closer to / away from the lower worktable; and a first clamping assembly and a second clamping assembly arranged opposite to each other, the first clamping assembly... A holding component is fixed to the lower end of the working cylinder for clamping the upper end of the sample to be tested; a second clamping component is fixed to the upper side of the lower working table for clamping the lower end of the sample; a heat-insulating cylinder is slidably connected to the working cylinder; wherein, in the non-working state, the heat-insulating cylinder is sleeved on the outside of the working cylinder; in the working state, the heat-insulating cylinder moves down to the upper end of the heat-insulating cylinder and connects with the first clamping component, and the lower end of the heat-insulating cylinder is connected with the second clamping component, forming a cavity between the heat-insulating cylinder, the first clamping component, and the second clamping component.

[0006] In one possible implementation, the inner wall surface of the heat-insulating cylinder is provided with a receiving groove that repeatedly folds in the vertical direction and surrounds the cylinder circumferentially, and a heating element is embedded in the receiving groove.

[0007] In one possible implementation, the first clamping assembly and the second clamping assembly have the same structure and are symmetrically arranged on both sides of the length direction of the sample.

[0008] In one possible implementation, the first clamping assembly includes: a housing, the housing being hollow and cylindrical, the housing having a conical hole portion inside; the larger end of the conical hole portion facing away from the sample; a locking block seat, formed by multiple valve bodies, each valve body having countersunk holes on its circumferential end faces; a spring provided between each pair of adjacent valve bodies; the two ends of the springs being located within the countersunk holes of the corresponding valve bodies; a suspension portion protruding from the top surface of each valve body, the suspension portion having a through pin hole portion, the pin hole portion containing a through connecting pin; locking blocks located inside the locking block seat; multiple locking blocks, each corresponding to one of the valve bodies and detachably connected; a balance disc, annular in shape, the balance disc having a radially extending notch portion on its inner hole, the two sidewall surfaces of the notch portion respectively... The device includes a concave translation groove; both ends of the connecting pin are horizontally slidably connected to the translation groove; a lifting cylinder connected to the balance disc, the lifting cylinder being configured to move only up and down relative to the housing; an inclined groove on the outer surface of the lifting cylinder, one end of the inclined groove extending circumferentially relative to the other end while extending axially; a transmission disc rotatably connected to the housing, the transmission disc being annular, the outer circumference of the transmission disc having a toothed portion; a driving protrusion on the inner hole of the transmission disc engaging with the inclined groove; and a transmission rod rotatably connected to the housing, the threaded section of the transmission rod engaging with the toothed portion; rotating the transmission rod drives the transmission disc to rotate, thereby causing the lifting cylinder to move up and down, and further causing the clamping block seat to move up and down, to loosen or clamp the sample.

[0009] In one possible implementation, the connecting pin includes a first half and a second half; a telescopic spring is provided between the first half and the second half.

[0010] In one possible implementation, the first half is provided with a plurality of circumferentially evenly arranged arc-shaped portions; the arc-shaped portions protrude toward the second half; the second half is provided with a plurality of circumferentially evenly arranged arc-shaped grooves, the arc-shaped grooves fitting into the arc-shaped portions and enclosing to form a complete cylindrical shape.

[0011] In one possible implementation, the housing is further provided with a guide sleeve, which is fixedly connected to the housing; the inner surface of the guide sleeve is provided with a guide protrusion protruding inward from the inner surface of the guide sleeve; the guide protrusion extends in the vertical direction; the outer surface of the lifting cylinder is provided with a guide groove extending in the vertical direction, which cooperates with and corresponds to the guide protrusion.

[0012] In one possible implementation, one end of the transmission rod passes through the wall of the housing and extends to the outside of the housing, and an operating part is provided at that end.

[0013] In one possible implementation, the end of the housing away from the sample is provided with a cover plate for closing the cavity.

[0014] In one possible implementation, the end of the housing away from the sample is provided with a radially outwardly protruding portion, the outer surface of which can be adapted to connect with the inner hole of the insulation cylinder.

[0015] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages: In the present invention, the first clamping component and the second clamping component are arranged opposite to each other. The first clamping component is fixed to the lower end of the working cylinder and is used to clamp the upper end of the sample to be tested. The second clamping component is fixed to the upper side of the lower working table and is used to clamp the lower end of the sample.

[0016] This invention can efficiently switch between working and non-working states. Specifically, the insulation cylinder and the working cylinder can be slidably connected vertically; wherein, in the non-working state, the insulation cylinder is sleeved on the outside of the working cylinder; in the working state, the insulation cylinder moves down to the upper end of the insulation cylinder and connects with the first clamping assembly, and the lower end of the insulation cylinder connects with the second clamping assembly, forming a cavity between the insulation cylinder, the first clamping assembly, and the second clamping assembly.

[0017] This invention enables rapid clamping and release of workpieces. When the clamping block moves upward, each segment moves radially outward under the action of the spring to release the sample. When the clamping block moves downward, the engagement of the conical hole and the outer conical part inside the housing pushes each segment radially inward to compress the spring and clamp the sample. Attached Figure Description

[0018] Figure 1 This is a front view of a high-temperature crystal material strength testing device according to an embodiment of the present invention, wherein the device is in a non-operating state.

[0019] Figure 2 This is a cross-sectional view of the first clamping component and the second clamping component in a high-temperature crystal material strength testing device according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the external structure of the first clamping component and the second clamping component in a high-temperature crystal material strength testing device according to an embodiment of the present invention.

[0021] Figure 4 This is a cross-sectional view of the heat-insulating cylinder in a high-temperature crystal material strength testing device according to an embodiment of the present invention.

[0022] Figure 5 This is a perspective view of the first clamping component in a high-temperature crystal material strength testing device according to an embodiment of the present invention.

[0023] Figure 6 This is a cross-sectional view of the first clamping component in a high-temperature crystal material strength testing device according to an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the structure of the first clamping component after the shell is removed in a high-temperature crystal material strength testing device according to an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the connection structure between the card block and the card block seat in a high-temperature crystal material strength testing device according to an embodiment of the present invention.

[0026] Figure 9 for Figure 8 Top view.

[0027] Figure 10 for Figure 8 A schematic diagram of the structure after one valve is removed.

[0028] Figure 11 This is a schematic diagram of the balance disk in a high-temperature crystal material strength testing device according to an embodiment of the present invention.

[0029] Figure 12 This is a schematic diagram of the lifting cylinder in a high-temperature crystal material strength testing device according to an embodiment of the present invention.

[0030] Figure 13 This is a schematic diagram of the transmission disk in a high-temperature crystal material strength testing device according to an embodiment of the present invention.

[0031] Figure 14 This is a schematic diagram of the connecting pin in a high-temperature crystal material strength testing device according to an embodiment of the present invention.

[0032] Figure 15 This is a cross-sectional view of the connecting pin in a high-temperature crystal material strength testing device according to an embodiment of the present invention.

[0033] Figure 16 This is a front view of a high-temperature crystal material strength testing device according to an embodiment of the present invention, wherein the device is in operation.

[0034] Explanation of reference numerals in the attached figures 1. Frame; 2. Lower worktable; 3. Guide column; 4. Lifting cylinder; 5. Upper worktable; 6. Working cylinder; 7. Telescopic cylinder; 8. First clamping assembly; 9. Second clamping assembly; 10. Insulation cylinder; 11. Sample; 12. Shell; 121. Conical hole; 122. Radial protrusion; 13. Cover plate; 14. Clamping block seat; 140. Petri dish; 141. Suspension part; 142. Countersunk hole; 143. Connecting groove; 144. Pin hole; 145. Outer cone; 15. Clamping block; 151. Connecting protrusion; 152. Lifting hole; 16. Heating element; 18. Transmission rod ; 181, Threaded section; 182, Operating part; 19, Transmission disc; 191, Toothed part; 192, Drive protrusion; 20, Guide sleeve; 201, Guide protrusion; 21, Balance disc; 211, Notch part; 212, Translation groove; 213, Snap-fit ​​part; 22, Connecting pin; 221, First half; 222, Second half; 223, Telescopic spring; 224, Arc-shaped part; 225, Arc-shaped groove; 23, Spring; 24, Lifting cylinder; 241, Guide groove; 242, Inclined groove; 25, Cavity; 26, Receiving groove; 27, Snap ring; 28, Central axis of symmetry. Detailed Implementation

[0035] Other objects and advantages of the present invention will become clear by explaining the preferred embodiments of the present application below.

[0036] like Figures 1-16 As shown, a high-temperature crystal material strength testing device includes: a frame 1, a lower worktable 2, a guide column 3, a lifting cylinder 4, an upper worktable 5, a working cylinder 6, a telescopic cylinder 7, a first clamping assembly 8, a second clamping assembly 9, and a heat preservation cylinder 10.

[0037] like Figure 1 As shown, the high-temperature crystal material strength testing device of the present invention has a central symmetry axis 28 extending in the upward direction. Unless otherwise specified, the axial direction in the present invention refers to the direction parallel to the central symmetry axis 28, while the radial direction refers to the direction perpendicular to the central symmetry axis 28.

[0038] The lower worktable 2 is fixed to the upper side of the frame 1. Multiple guide columns 3 are longitudinally arranged on the upper side of the frame 1. The upper worktable 5 and each guide column 3 can be slidably connected up and down, and a working cylinder 6 is provided on the lower side of the upper worktable 5. The lower end of the lifting cylinder 4 is connected to the frame 1, and the upper end of the lifting cylinder 4 is connected to the upper worktable 5, which is used to drive the upper worktable 5 to move closer to / away from the lower worktable 2 to stretch the specimen 11.

[0039] In this invention, the first clamping component 8 and the second clamping component 9 are arranged opposite to each other. The first clamping component 8 is fixed to the lower end of the working cylinder 6 and is used to clamp the upper end of the test sample 11. The second clamping component 9 is fixed to the upper side of the lower worktable 2 and is used to clamp the lower end of the sample 11.

[0040] The heat preservation cylinder 10 and the working cylinder 6 can be slidably connected up and down; wherein, in the non-working state, the heat preservation cylinder 10 is sleeved on the outside of the working cylinder 6; in the working state, the heat preservation cylinder 10 moves down to the upper end of the heat preservation cylinder 10 and connects with the first clamping assembly 8, and the lower end of the heat preservation cylinder 10 is connected with the second clamping assembly 9, forming a cavity 25 between the heat preservation cylinder 10, the first clamping assembly 8 and the second clamping assembly 9.

[0041] In this invention, by forming a cavity 25 between the first clamping assembly 8, the second clamping assembly 9, and the heat-insulating cylinder 10, a high-temperature environment can be provided for the sample 11 to test its tensile strength in a high-temperature environment. In some embodiments, such as Figure 6 As shown, the end of the housing 12 away from the sample 11 is provided with a cover plate 13 for sealing the cavity 25. In some embodiments, such as Figure 2 and Figure 6 As shown, the end of the housing 12 away from the sample is provided with a radially outward protrusion 122. The outer surface of the radially protrusion 122 can be adapted to connect with the inner hole of the heat preservation cylinder 10 to seal the cavity 25.

[0042] In some embodiments, such as Figure 4 As shown, the inner wall surface of the heat-insulating cylinder 10 is provided with a receiving groove 26 that repeatedly folds in the vertical direction and surrounds the circumference. A heating element 16 is embedded in the receiving groove 26. The heating element 16 can heat the cavity 25. Preferably, the high-temperature crystal material strength testing device also includes a temperature sensor and a controller. The temperature sensor measures the temperature inside the cavity 25. The temperature sensor is signal-connected to the controller, and the controller is electrically connected to the heating element 16. When the temperature inside the cavity 25 measured by the temperature sensor reaches the set requirement, it sends a signal to the controller, and the controller controls the heating element 16 to stop heating.

[0043] In some embodiments, the first clamping component 8 and the second clamping component 9 have the same structure and are symmetrically arranged on both sides of the length direction of the sample 11, which facilitates processing and manufacturing and reduces manufacturing costs.

[0044] The following explanation uses the first clamping component 8 as an example. Figures 5-15 As shown, the first clamping assembly 8 includes: a housing 12, a clamping block seat 14, a clamping block 15, a balance disc 21, a lifting cylinder 24, a transmission disc 19, and a transmission rod 18.

[0045] The housing 12 is a hollow cylindrical shape, and a conical hole 121 is provided inside the housing 12; the larger end of the conical hole 121 faces away from the sample 11. The locking block 14 is formed by a plurality of flaps 140, and the circumferential end faces of the flaps 140 have countersunk holes 142; a spring 23 is provided between each pair of adjacent flaps 140; the two ends of the spring 23 are located in the countersunk holes 142 of the corresponding flaps 140. The locking block 14 has an outer conical portion 145, which matches the conical hole 121.

[0046] The spring 23 provides an elastic force that pushes the plurality of valves 140 apart in a direction away from each other. As a result, when the clamping block 14 moves upward within the conical hole 121, the clamping block 14 remains in contact with the inner surface of the conical hole 121, which facilitates the formation of a space for clamping the sample 11 inside the clamping block 14.

[0047] The top of the valve body 140 has a suspension portion 141 protruding from the top surface of the valve body 140. The suspension portion 141 has a through pin hole 144, and a through connecting pin 22 is provided in the pin hole 144. A locking block 15 is located inside the locking block seat 14; there are multiple locking blocks 15, each corresponding to a valve body 140 and detachably connected. The locking block seat 14 has a vertically extending connecting groove 143, which may have a T-shaped cross-section, for example. The locking block 15 has a corresponding connecting protrusion 151, which may also have a T-shaped cross-section, for example. The connecting protrusion 151 is detachably connected to the connecting pin 22. In some embodiments, the locking block 15 and the locking block seat 14 can also be connected by screws. The upper end of the locking block 15 has a lifting hole 152, through which the locking block 15 can be removed.

[0048] In some embodiments, such as Figures 14-15 As shown, the connecting pin 22 includes a first half 221 and a second half 222; a telescopic spring 223 is provided between the first half 221 and the second half 222. When the connecting pin 22 is connected to the notch 211, the first half 221 and the second half 222 are allowed to be pressed in the length direction of the connecting pin 22, so that the two are brought closer together, thereby engaging the connecting pin 22 into the translation groove 212 on the notch 211.

[0049] In some embodiments, the first half 221 is provided with a plurality of circumferentially uniformly arranged arc-shaped portions 224; the arc-shaped portions 224 protrude toward the second half 222; the second half 222 is provided with a plurality of circumferentially uniformly arranged arc-shaped grooves 225, the arc-shaped grooves 225 and the arc-shaped portions 224 are fitted together and enclosed to form a complete cylindrical shape.

[0050] like Figure 11As shown, the balance disc 21 is annular in shape, and its inner hole has a radially extending notch 211. The two circumferential sidewalls of the notch 211 each have a recessed translation groove 212. The two ends of the connecting pin 22 are horizontally slidably connected to the translation grooves 212. When the balance disc 21 moves upward, the locking block 14, under the action of the spring 23, causes each petal 140 to move away from each other. The cooperation between the translation grooves 212 and the connecting pin 22 allows each petal 140 to move radially outward.

[0051] like Figure 6 , Figure 11 and Figure 12 As shown, the lifting cylinder 24 is connected to the balance disk 21. By moving the lifting cylinder 24 in the vertical direction, the balance disk 21 can be moved up and down accordingly. In some embodiments, the outer circumference of the balance disk 21 is provided with a locking part 213, which is embedded in the inner hole of the lifting cylinder 24, and the connection between the two is achieved by a retaining spring 27.

[0052] like Figure 6 , Figure 7 and Figure 12 As shown, the lifting cylinder 24 is configured to move only up and down relative to the housing 12. In some embodiments, a guide sleeve 20 is also provided inside the housing 12, and the guide sleeve 20 is fixedly connected to the housing 12; the inner surface of the guide sleeve 20 is provided with a guide protrusion 201 that protrudes inward from the inner surface of the guide sleeve 20; the guide protrusion 201 extends in the vertical direction; the outer surface of the lifting cylinder 24 is provided with a guide groove 241 that extends in the vertical direction, and the guide groove 241 cooperates with the guide protrusion 201 and is connected in a one-to-one correspondence.

[0053] like Figure 6 , Figure 12 and Figure 13 As shown, the outer surface of the lifting cylinder 24 is provided with a sloping groove 242, one end of which extends circumferentially relative to the other end while also extending axially. The transmission disc 19 is rotatably connected to the housing 12. The transmission disc 19 is annular, and a toothed portion 191 is provided on its outer circumference. The inner hole of the transmission disc 19 is provided with a driving protrusion 192 that engages with the sloping groove 242. When the transmission disc 19 rotates, the engagement of the driving protrusion 192 with the sloping groove 242 drives the lifting cylinder 24 to move vertically.

[0054] like Figure 3 As shown and Figure 7As shown, the transmission rod 18 is rotatably connected to the housing 12, and the threaded section 181 of the transmission rod 18 meshes with the toothed portion 191. Rotating the transmission rod 18 drives the transmission disk 19 to rotate, thereby causing the lifting cylinder 24 to move up and down, and in turn causing the clamping block seat 14 to move up and down. When the clamping block seat 14 moves upward, under the action of the spring 23, each petal 140 moves radially outward to release the sample 11. When the clamping block seat 14 moves downward, the cooperation between the tapered hole portion 121 and the outer tapered portion 145 in the housing 12 pushes each petal 140 to move radially inward to compress the spring 23 and clamp the sample 11. In some embodiments, one end of the transmission rod 18 passes through the wall of the housing 12 and extends to the outside of the housing 12, and an operating portion 182 is provided at this end. The operating portion 182 can be, for example, an external hexagonal or internal hexagonal hole, and the transmission rod 18 can be rotated by the cooperation between the tool and the operating portion 182.

[0055] The working process of the high-temperature crystalline material strength testing device according to one embodiment of the present invention is as follows: First, the transmission rod 18 on the second clamping assembly 9 is operated by a tool, and the second clamping assembly 9 clamps the lower end of the sample 11. The upper worktable 5 is driven down by the lifting cylinder 4 to approach the lower worktable 2, until the upper end of the sample 11 is placed in the inner hole of the first clamping assembly 8. The transmission rod 18 of the first clamping assembly 8 is operated by a tool, and the first clamping assembly 8 clamps the upper end of the sample 11. Next, the heat preservation cylinder 10 is driven down by the telescopic cylinder 7 until the lower end of the heat preservation cylinder 10 is connected to the shell 12 of the second clamping assembly 9, and the upper end of the heat preservation cylinder 10 is connected to the shell 12 of the first clamping assembly 8, thereby sealing and forming a cavity 25. The cavity 25 is heated by the heating element 16 and maintained for a certain period of time, so that the sample 11 reaches the set temperature, and then the tensile test begins. After the test, the insulation cylinder 10 is first lifted by the telescopic cylinder 7. After all components and the sample have cooled down, the first clamping assembly 8 and the second clamping assembly 9 are operated to remove the broken sample 11. The upper worktable 5 is then driven to reset by the lifting cylinder 4 to complete the test.

[0056] The apparatus of this application has been described in detail with reference to the preferred technical solutions. However, it should be noted that, without departing from the spirit of this application, those skilled in the art can make any modifications, alterations, and variations based on the above disclosure. This application includes the above-described specific embodiments and any equivalent forms thereof.

Claims

1. A high-temperature crystalline material strength testing device, characterized in that, include: Rack (1); The lower worktable (2) is fixed to the upper side of the frame (1); Multiple guide columns (3) are longitudinally arranged on the upper side of the frame (1); An upper worktable (5) is slidably connected to each of the guide columns (3) in the upper and lower parts, and a work cylinder (6) is provided on the lower side of the upper worktable (5). Lifting cylinder (4), the lower end of the lifting cylinder (4) is connected to the frame (1), and the upper end of the lifting cylinder (4) is connected to the upper worktable (5), used to drive the upper worktable (5) to move closer to / away from the lower worktable (2). The first clamping assembly (8) and the second clamping assembly (9) are arranged opposite to each other. The first clamping assembly (8) is fixed to the lower end of the working cylinder (6) and is used to clamp the upper end of the sample (11) to be tested. The second clamping assembly (9) is fixed to the upper side of the lower working table (2) and is used to clamp the lower end of the sample (11). The heat preservation cylinder (10) is slidably connected to the working cylinder (6) in the upper and lower parts; In the non-working state, the heat insulation cylinder (10) is sleeved on the outside of the working cylinder (6); in the working state, the heat insulation cylinder (10) moves down to the upper end of the heat insulation cylinder (10) and connects with the first clamping assembly (8), and the lower end of the heat insulation cylinder (10) is connected with the second clamping assembly (9), forming a cavity (25) between the heat insulation cylinder (10), the first clamping assembly (8) and the second clamping assembly (9).

2. The high-temperature crystalline material strength testing device as described in claim 1, characterized in that, The inner wall surface of the heat preservation cylinder (10) is provided with a receiving groove (26) that repeatedly bends in the vertical direction and surrounds the circumference. A heating element (16) is embedded in the receiving groove (26).

3. The high-temperature crystalline material strength testing device as described in claim 1, characterized in that, The first clamping component (8) and the second clamping component (9) have the same structure and are symmetrically arranged on both sides of the length direction of the sample (11).

4. The high-temperature crystalline material strength testing device as described in claim 1, characterized in that, The first clamping assembly (8) includes: The shell (12) is a hollow cylindrical shape, and the shell (12) is provided with a conical hole (121); the large end of the conical hole (121) faces away from the sample (11); The card block seat (14) is formed by multiple valve bodies (140), and each valve body (140) has a countersunk hole (142) on both circumferential end faces. A spring (23) is provided between each two adjacent valve bodies (140). The two ends of the spring (23) are located in the countersunk hole (142) of the corresponding valve body (140). The top of the valve body (140) is provided with a suspension part (141) protruding from the top surface of the valve body (140). The suspension part (141) is provided with a through pin hole (144), and a through connecting pin (22) is provided in the pin hole (144). The card block (15) is located inside the card block seat (14); there are multiple card blocks (15), which are detachably connected to the valve body (140) one by one; The balance disc (21) is circular in shape. The inner hole of the balance disc (21) is provided with a notch (211) extending in the radial direction. The two side wall surfaces of the notch (211) are respectively provided with concave translation grooves (212). The two ends of the connecting pin (22) are respectively slidably connected to the translation grooves (212) in a horizontal direction. The lifting cylinder (24) is connected to the balance disc (21). The lifting cylinder (24) is configured to move only up and down relative to the housing (12). The outer surface of the lifting cylinder (24) is provided with a groove (242). One end of the groove (242) extends circumferentially relative to the other end while extending axially. A transmission disc (19) is rotatably connected to the housing (12). The transmission disc (19) is annular, and a toothed portion (191) is provided on the outer circumference of the transmission disc (19). A driving protrusion (192) is provided on the inner hole of the transmission disc (19) to engage with the inclined groove (242). The transmission rod (18) is rotatably connected to the housing (12), and the threaded section (181) of the transmission rod (18) meshes with the toothed part (191); rotating the transmission rod (18) can drive the transmission disk (19) to rotate, thereby driving the lifting cylinder (24) to move up and down, and then driving the clamping block seat (14) to move up and down, so as to loosen or clamp the sample (11).

5. The high-temperature crystalline material strength testing device as described in claim 4, characterized in that, The connecting pin (22) includes a first half (221) and a second half (222); a telescopic spring (223) is provided between the first half (221) and the second half (222).

6. The high-temperature crystal material strength testing device as described in claim 5, characterized in that, The first half (221) is provided with a plurality of circumferentially evenly arranged arc-shaped portions (224); the arc-shaped portions (224) protrude toward the second half (222); The second half (222) is provided with a plurality of circumferentially evenly arranged arc-shaped grooves (225), which are fitted into the arc-shaped part (224) and enclose to form a complete cylindrical shape.

7. The high-temperature crystal material strength testing device as described in claim 4, characterized in that, The housing (12) is also provided with a guide sleeve (20), which is fixedly connected to the housing (12); the inner surface of the guide sleeve (20) is provided with a guide protrusion (201) that protrudes inward from the inner surface of the guide sleeve (20); the guide protrusion (201) extends in the vertical direction; The outer surface of the lifting cylinder (24) is provided with a guide groove (241) extending in the vertical direction. The guide groove (241) cooperates with the guide protrusion (201) and is connected in a one-to-one correspondence.

8. The high-temperature crystalline material strength testing device as described in claim 4, characterized in that, One end of the transmission rod (18) passes through the wall of the housing (12) and extends to the outside of the housing (12), and an operating part (182) is provided at that end.

9. The high-temperature crystalline material strength testing device as described in claim 4, characterized in that, The end of the housing (12) away from the sample (11) is provided with a cover plate (13) for closing the cavity (25).

10. The high-temperature crystalline material strength testing device as described in claim 4, characterized in that, The end of the housing (12) away from the sample is provided with a radially protruding part (122), the outer surface of which can be adapted to be connected to the inner hole of the heat preservation cylinder (10).

Images