Aluminum alloy high temperature tensile testing device

Abstract

The present invention relates to the technical field of metal tensile testing, and specifically discloses an aluminum alloy high-temperature tensile testing device, comprising a stretching mechanism, a fixing mechanism being provided on the stretching mechanism, and a feeding mechanism and a cooling mechanism being provided at the top and bottom of the fixing mechanism respectively; the feeding mechanism comprises an upper mounting seat arranged on the stretching mechanism, a placement seat installed in the upper mounting seat, and an upper guide member arranged below the placement seat, and a lifting assembly is provided on the inner top wall of the upper mounting seat; the aluminum alloy high-temperature tensile testing device of the present invention places a new sample into the placement seat and drives the new sample downward through the lifting assembly, and in the process of the new sample moving downward, a material baffle drives two half-threaded sleeves one and two half-threaded sleeves two away from each other respectively through two mounting frames one and two mounting frames two, so that the broken sample automatically falls into the cooling mechanism for collection, and in the process of replacing the new sample, there is no need to stop the machine for cooling, thereby achieving the effect of quickly replacing the sample.

Description

Technical Field

[0001] The present invention relates to the technical field of metal tensile testing, and in particular to a high-temperature tensile testing device for aluminum alloys. Background Art

[0002] High-temperature tensile testing of aluminum alloys is an important method for evaluating their mechanical properties in extreme temperature environments. It is commonly used in aerospace, automotive manufacturing, building materials, and other fields. High-temperature tensile testing is performed at temperatures above room temperature. In addition to stress and strain, temperature and time are also important parameters to consider during high-temperature tensile testing. Temperature significantly influences high-temperature tensile properties, requiring strict temperature control. Specimens are typically heated in an electric furnace with ample soaking zone within the furnace workspace, and instrumentation for automatic temperature control.

[0003] Chinese patent application CN110879180B discloses an atmosphere-protected, high-temperature tensile testing device. This device is connected to an optical microscope via a high-temperature observation window. The transmission control system includes a moving beam, a bidirectional ball screw, and a tensile shaft. This device enables high-temperature tensile testing of non-oxidative specimens, providing a research platform for high-temperature fracture analysis of materials.

[0004] However, the structural design of the above-mentioned related technology: although it can achieve rapid heating and cooling of the sample, when there are many samples that need to be stretched, it is necessary to first open the heating furnace to take out the sample, then put a new sample, and finally close the heating furnace and heat the sample. This operation requires repeatedly heating and cooling the heating furnace, which not only leads to an increase in testing costs, but also requires a lot of time to replace the sample after the test is completed, resulting in low testing efficiency.

[0005] Therefore, we proposed an aluminum alloy high-temperature tensile testing device to solve the above problems. Summary of the Invention

[0006] The present invention provides an aluminum alloy high-temperature tensile testing device, which aims to solve the problem in the related art that when there are many test samples, it takes a lot of time to replace the samples.

[0007] The aluminum alloy high-temperature tensile testing device of the present invention comprises a tensile mechanism, a fixing mechanism is provided on the tensile mechanism, and a feeding mechanism and a cooling mechanism are provided on the top and bottom of the fixing mechanism respectively;

[0008] The loading mechanism includes an upper mounting seat provided on the stretching mechanism, a placement seat provided in the upper mounting seat, and an upper guide provided below the placement seat. A lifting assembly is provided on the inner top wall of the upper mounting seat to drive the sample to rise and fall. A driving assembly is engaged with the lifting assembly to enable the lifting assembly to drive the sample to rotate.

[0009] The fixing mechanism includes two upper connecting assemblies arranged opposite to each other and two lower connecting assemblies arranged opposite to each other. The upper connecting assembly includes a mounting frame 1 elastically connected to the upper guide member, a material blocking plate provided on the top of the mounting frame 1, and a semi-threaded sleeve 1 installed on the mounting frame 1. The semi-threaded sleeve 1 is located inside the upper guide member.

[0010] The lower connecting assembly includes a mounting frame 2 elastically connected to the cooling mechanism, a connecting seat installed on the top of the mounting frame 2 and a semi-threaded sleeve 2 provided on the mounting frame 2. The semi-threaded sleeve 2 is located on the inner side of the cooling mechanism, and the mounting frame 1 is slidably connected to the connecting seat.

[0011] The sample is placed in the placement seat and placed between the two baffle plates, and the lifting assembly is then driven to operate by the driving assembly. At this time, the lifting assembly drives the sample to rotate and move downward. In the process of the sample passing through the two baffle plates, the baffle plates respectively drive the two half-threaded sleeves one and the two half-threaded sleeves two away from each other through the two mounting frames one and two mounting frames two. When the sample passes through the two baffle plates, the two half-threaded sleeves one and the two half-threaded sleeves two are reset. At this time, the lifting assembly continues to drive the sample to rotate and move downward, so that the two ends of the sample are respectively threadedly connected with the two half-threaded sleeves one and the two half-threaded sleeves two to fix the sample. When the sample is broken, a new sample is placed in the placement seat and the new sample is driven downward by the lifting assembly. In the process of the new sample moving downward, the broken sample automatically falls into the cooling mechanism for collection, and in the process of replacing the new sample, there is no need to stop the machine for cooling, thereby achieving the effect of quickly replacing the sample, thereby improving the detection efficiency.

[0012] Preferably, the upper guide member includes an outer cylinder 1 installed at the bottom of the upper mounting seat and an inner cylinder 1 arranged on the inner side of the outer cylinder 1, the top end of the inner cylinder 1 passes through the outer cylinder 1 and extends to the interior of the upper mounting seat, the baffle is located at the top end of the inner cylinder 1, and the semi-threaded sleeve 1 is located at the bottom end of the inner cylinder 1.

[0013] Preferably, the lifting assembly includes a screw, a threaded block, gear one, a limiter and gear two, the screw is rotatably connected to the inner top wall of the upper mounting seat, the gear two is mounted on the bottom end of the screw, the gear one can engage with gear two, the threaded block is threadedly connected to the screw, the threaded block is slidably connected to the upper mounting seat, the threaded block is rotatably connected to a rotating shaft, the gear one is mounted on the rotating shaft, and the limiter is mounted on the bottom end of gear one.

[0014] Preferably, the driving assembly includes an adjusting shaft and a gear three mounted on the adjusting shaft, the gear two is engaged with the gear three, a mounting plate is rotatably connected to the adjusting shaft, and the mounting plate is mounted on the inner wall of the upper shell.

[0015] Rotate the adjusting shaft, and the adjusting shaft drives the screw on gear two to rotate through gear three. The screw drives the gear to move down through the threaded block. Gear one engages with gear two when moving down. At this time, the gear moves down and rotates, thereby driving the limiter to move down and rotate, thereby driving the sample to move down and rotate.

[0016] Preferably, the cooling mechanism includes a lower mounting seat, a lower guide, a rotating assembly, a material receiving assembly, a support assembly and an air supply assembly, the lower guide is mounted on the top of the lower mounting seat, the rotating assembly is rotatably connected to the inner bottom wall of the lower mounting seat, the material receiving assembly is arranged at the top of the rotating assembly, the support assembly is located above the material receiving assembly, and the air supply assembly is located on one side of the material receiving assembly.

[0017] Preferably, the lower guide member includes an outer cylinder 2 and an inner cylinder 2 arranged in the outer cylinder 2, the outer cylinder 2 is installed on the top of the lower mounting seat, the inner cylinder 1 has the same inner diameter as the inner cylinder 2, the bottom end of the inner cylinder 2 extends to the interior of the lower shell and is located above the support assembly, and the semi-threaded sleeve 2 is located at the top of the inner cylinder 2.

[0018] Preferably, the rotating assembly includes a rotating column, an impeller and a support seat, the rotating column is rotatably connected to the inner bottom wall of the lower mounting seat, the impeller is installed on the outside of the rotating column, and the support seat is installed on the top of the rotating column.

[0019] Preferably, the material receiving assembly includes a sliding plate, which is elastically slidably connected to the support seat in the vertical direction, a fixed seat is installed on the sliding plate, a protective frame is installed on the top side of the fixed seat, vertical plates are installed on both sides of the top of the sliding plate, and a wedge block is installed on the vertical plate.

[0020] After the broken specimen falls, the lower half of the specimen enters the fixing seat for collection. At the same time, the fixing seat and the protective frame prevent the lower half of the specimen from falling.

[0021] Preferably, the support assembly includes two oppositely arranged baffles, a groove is provided on one side of the baffle, and a wedge block 2 is installed on the other side of the baffle, and the wedge block 1 is located on the top of the wedge block 2. A connecting plate is installed on both baffles, and a slide rod 1 is slidably connected to the two connecting plates. A connecting frame is provided on the outer side of the slide rod 1, and the slide rod 1 is installed on the inner wall of the connecting frame. The connecting frame is installed on the support seat, and the connecting frame is elastically connected to the connecting plate.

[0022] When the lower half of the sample falls into the fixed seat, the sliding plate drives the wedge to move down through the vertical plate. Wedge one squeezes wedge two, making the two baffles approach each other to narrow the distance between the two baffles, thereby blocking the upper half of the sample and separating the broken sample.

[0023] Preferably, the air supply assembly includes a vertical pipe, a connecting pipe and an air supply pipe. The vertical pipe is installed on one side of the inner bottom wall of the lower mounting seat, the connecting pipe is installed on the bottom of one side of the vertical pipe, and the air supply pipe is installed on the bottom of the other side of the vertical pipe. Several air outlets are opened on one side of the vertical pipe.

[0024] The air supply pipe can be connected to an external fan, and the external fan can supply air to the vertical pipe through the air supply pipe. At this time, the connecting pipe blows air to the impeller, and the rotation of the impeller can drive the broken sample to rotate. At the same time, the air outlet blows air to the broken sample to accelerate the cooling of the sample.

[0025] By adopting the above technical solution, the beneficial effects of the present invention are as follows: during testing, the two ends of the sample are respectively threadedly connected to the two half-threaded sleeves 1 and the two half-threaded sleeves 2 to fix the sample. When the sample is broken, a new sample is placed in the placement seat and the new sample is driven downward by the lifting assembly. In the process of the new sample moving downward, the baffle plate drives the two half-threaded sleeves 1 and the two half-threaded sleeves 2 away from each other through the two mounting frames 1 and the two mounting frames 2, so that the broken sample automatically falls into the cooling mechanism for collection, and in the process of replacing the new sample, there is no need to stop the machine for cooling, which achieves the effect of quickly replacing the sample, thereby improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the present invention.

[0027] Figure 2 It is a structural schematic diagram of the body of a specific embodiment of the present invention.

[0028] Figure 3 Schematic diagram of the internal structure of the upper shell of a specific embodiment of the present invention.

[0029] Figure 4 It is a structural schematic diagram of a lifting assembly in a specific embodiment of the present invention.

[0030] Figure 5 Schematic diagram of the internal structure of the lower shell of a specific embodiment of the present invention.

[0031] Figure 6 It is a structural schematic diagram of the material connection component in a specific embodiment of the present invention.

[0032] Figure 7 It is a structural schematic diagram of the air supply assembly in a specific embodiment of the present invention.

[0033] Figure 8 It is a structural schematic diagram of the upper connecting component and the lower connecting component in a specific embodiment of the present invention.

[0034] Figure 9It is a structural schematic diagram of a material baffle in a specific embodiment of the present invention.

[0035] Figure 10 It is a structural schematic diagram of a connecting socket in a specific embodiment of the present invention.

[0036] Reference numerals:

[0037] 11. Machine body; 12. Frame; 13. Top frame; 14. Controller; 15. Heating furnace; 16. Loading assembly;

[0038] 21. Upper mounting seat; 211. Upper housing; 212. Connector; 213. Slide; 22. Upper guide; 221. Outer cylinder 1; 222. Inner cylinder 1; 223. Fixing plate 1; 23. Lifting assembly; 231. Lead screw; 232. Threaded block; 233. Rotating shaft; 234. Gear 1; 235. Connecting shaft; 236. Stopper; 237. Gear 2; 24. Driving assembly; 241. Gear 3; 242. Adjusting shaft; 243. Mounting plate; 25. Placement seat;

[0039] 31. Lower mounting seat; 311. Lower housing; 312. Mounting head; 32. Lower guide member; 321. Outer cylinder 2; 322. Inner cylinder 2; 323. Fixed plate 2; 33. Rotating assembly; 331. Rotating column; 332. Impeller; 333. Support seat; 334. Elastic member 1; 34. Material receiving assembly; 341. Sliding plate; 342. Fixed seat; 343. Protective frame; 344. Vertical plate; 345. Wedge 1; 35. Support assembly; 351. Baffle; 352. Groove; 353. Wedge 2; 354. Connecting plate; 355. Sliding rod 1; 356. Elastic member 2; 357. Connecting frame; 36. Air supply assembly; 361. Vertical pipe; 362. Connecting pipe; 363. Air outlet; 364. Air supply pipe;

[0040] 41. Upper connecting assembly; 411. Mounting frame 1; 412. Material stop plate; 413. Semi-threaded sleeve 1; 414. Movable plate 1; 415. Slide rod 2; 416. Elastic member 3; 42. Lower connecting assembly; 421. Mounting frame 2; 422. Connecting seat; 423. Semi-threaded sleeve 2; 424. Movable plate 2; 425. Slide rod 3; 426. Elastic member 4. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0042] like Figures 1 to 10As shown, the aluminum alloy high-temperature tensile testing device of the present invention includes a stretching mechanism for stretching the sample, a fixing mechanism is provided on the stretching mechanism for fixing the sample, a loading mechanism is provided on the top of the fixing mechanism for loading the sample into the fixing mechanism, and a cooling mechanism is provided at the bottom of the fixing mechanism for cooling the stretched sample.

[0043] The sample is installed on the fixing mechanism through the loading mechanism, and then the load is applied to the cooling mechanism through the stretching mechanism. When the sample is broken, a new sample is installed through the loading mechanism. At this time, the broken sample falls into the cooling mechanism for cooling, so that the staff can quickly remove it.

[0044] like Figure 1 and Figure 2 As shown, the stretching mechanism includes a body 11, a frame 12, and a top frame 13. The body 11 is mounted at the bottom of the frame 12, and the top frame 13 is mounted at the top of the frame 12. The feeding mechanism is detachably connected to the bottom of the top frame 13. A heating furnace 15 is rotatably connected to the frame 12. A controller 14 is mounted on one side of the body 11 to control the heating temperature of the heating furnace 15. A loading assembly 16 is mounted on the top of the body 11, and a cooling mechanism is detachably connected to the loading assembly 16.

[0045] like Figures 1 to 3 As shown, the loading mechanism includes an upper mounting seat 21, an upper guide 22, a control unit, and a placement seat 25. The control unit includes a lifting assembly 23 and a drive assembly 24. The upper guide 22 is arranged at the bottom of the upper mounting seat 21. The placement seat 25 is arranged inside the upper mounting seat 21 and above the upper guide 22. The lifting assembly 23 is arranged on the inner top wall of the upper mounting seat 21, and the drive assembly 24 is engaged and connected to one side of the lifting assembly 23.

[0046] The sample is placed in the placement seat 25 and the driving assembly 24 is started. The driving assembly 24 drives the sample to move vertically downward and rotate through the lifting assembly 23, so that the sample passes through the upper guide 22 and is installed on the fixing mechanism to fix the sample.

[0047] Continue to refer Figures 1 to 3 As shown, the upper mounting base 21 includes an upper shell 211. A connector 212 is mounted on the top of the upper shell 211. The connector 212 is detachably connected to the bottom of the top frame 13. A slide bar 213 is mounted on one side of the inner wall of the upper shell 211. The placement seat 25 is mounted on the lower interior of the upper shell 211 via a fixing block. In this embodiment, the placement seat 25 is a cylinder with an opening. The sample can be placed into the placement seat 25 through the opening on the placement seat 25. A door corresponding to the placement seat 25 is hinged on the upper shell 211. The sample can be placed into the placement seat 25 by opening the door of the upper shell 211.

[0048] like Figure 2 and Figure 3 As shown, the upper guide member 22 comprises an outer cylinder 221 and an inner cylinder 222 disposed within the outer cylinder 221. The inner diameter of the inner cylinder 222 is the same as the maximum diameter of the specimen. The outer cylinder 221 is mounted on the bottom of the upper housing 211, with the inner bottom wall of the upper housing 211 and the top of the outer cylinder 221 being aligned horizontally. The top of the inner cylinder 222 passes through the outer cylinder 221 and extends into the interior of the upper housing 211. The outer cylinder 221 and the inner cylinder 222 are coaxially arranged. A fixing plate 223 is mounted on both sides of the inner cylinder 222, and the fixing plate 223 is mounted on the inner wall of the outer cylinder 221.

[0049] like Figure 3 and Figure 4 As shown, the lifting assembly 23 includes a lead screw 231, a threaded block 232, a first gear 234, and a second gear 237. The top end of the lead screw 231 is rotatably connected to one side of the inner top wall of the upper housing 211, and the second gear 237 is mounted at the bottom end of the lead screw 231. In the initial position, the first gear 234 is located above the second gear 237. The first gear 234 is capable of meshing with the second gear 237. The threaded block 232 is threadedly connected to the outer side of the lead screw 231 and is slidably connected to the slide bar 213. The bottom end of the threaded block 232 is rotatably connected to the rotating shaft 233. The top end of the gear 1 234 is mounted at the bottom end of the rotating shaft 233. The bottom end of the gear 1 234 is mounted to a connecting shaft 235, and the bottom end of the connecting shaft 235 is mounted to a limit member 236. In this embodiment, the limiting member 236 is polygonal, a groove adapted to the limiting member 236 is provided at the top of the sample, and the placement seat 25 is coaxially arranged with the limiting member 236 .

[0050] Continue to refer Figure 3 and Figure 4 As shown, the drive assembly 24 includes an adjusting shaft 242 and a gear three 241 installed on the outside of the adjusting shaft 242, gear two 237 is engaged with gear three 241, and the top end of the adjusting shaft 242 is rotatably connected to a mounting plate 243, and one side of the mounting plate 243 is installed on the inner wall of the upper shell 211.

[0051] Adjustment shaft 242 drives screw 231 on gear 2 237 via gear 3 241. Screw 231 drives gear 1 234 on rotation shaft 233 downward via threaded block 232. Simultaneously, gear 1 234 drives stopper 236 downward and inserts it into the specimen's slot, pushing the specimen downward. During its downward movement, gear 1 234 engages with gear 2 237, causing gear 1 234 to rotate while moving downward, driving the specimen downward and rotating, allowing the specimen to be mounted in the fixing mechanism. In another embodiment, a servo motor is mounted on the top of mounting plate 243, and the servo motor's drive shaft is fixed to the top of adjustment shaft 242.

[0052] It is understandable that in other embodiments, the control unit can also use a motor and cylinder drive method to realize the rotation and lifting of the limit member 236, wherein the motor is installed on the inner top wall of the upper shell 211, the fixed end of the cylinder is installed on the drive shaft of the motor, and the limit member 236 is installed on the movable end of the cylinder. The motor can drive the limit member 236 to rotate through the cylinder. During the rotation of the limit member 236, the limit member 236 can be driven to rise and fall by the extension and contraction of the movable end of the cylinder.

[0053] like Figure 1 、 Figure 2 and Figure 5 As shown, the cooling mechanism includes a lower mounting seat 31, a lower guide member 32, a rotating assembly 33, a material receiving assembly 34, a support assembly 35 and an air supply assembly 36. The lower guide member 32 is mounted on the top of the lower mounting seat 31, the rotating assembly 33 is rotatably connected to the inner bottom wall of the lower mounting seat 31, the material receiving assembly 34 is arranged at the top of the rotating assembly 33, the support assembly 35 is located above the material receiving assembly 34, and the air supply assembly 36 is located on one side of the material receiving assembly 34.

[0054] The broken sample passes through the lower guide 32 and falls onto the material receiving assembly 34 and the support assembly 35 respectively, and then the external fan is connected to the air supply assembly 36, so that the air supply assembly 36 blows air to the rotating assembly 33, the material receiving assembly 34 and the support assembly 35. At the same time, the rotating assembly 33 drives the material receiving assembly 34 and the support assembly 35 to rotate, so as to cool the samples on the material receiving assembly 34 and the support assembly 35.

[0055] Continue to refer Figure 1 、 Figure 2 and Figure 5 As shown, the lower mounting base 31 includes a lower housing 311 and a mounting head 312 mounted at the bottom of the lower housing 311. The mounting head 312 is mounted on the loading assembly 16. After the specimen is mounted on the fixing mechanism, the loading assembly 16 applies a load to the mounting head 312, causing the mounting head 312 to stretch the specimen through the lower housing 311. The lower housing 311 is provided with a door corresponding to the material receiving assembly 34. Opening the door of the lower housing 311 allows the cooled specimen to be removed.

[0056] like Figure 2 、 Figure 3 and Figure 5 As shown, the lower guide member 32 includes an outer cylinder 321 and an inner cylinder 322 disposed within the outer cylinder 321. The bottom end of the outer cylinder 321 is mounted on the top of the lower housing 311. The outer cylinder 321 and the inner cylinder 322 are coaxially arranged, and the inner cylinder 322 and the inner cylinder 322 have the same inner diameter. The bottom end of the inner cylinder 322 extends into the interior of the lower housing 311 and is located above the support assembly 35. A second fixing plate 323 is mounted on both sides of the inner cylinder 322, and the fixing plate 323 is fixed to the inner wall of the outer cylinder 321.

[0057] like Figure 5 and Figure 6 As shown, the rotating assembly 33 includes a rotating column 331, an impeller 332, and a support base 333. The rotating column 331 is rotatably connected to the inner bottom wall of the lower housing 311. The impeller 332 is mounted on the outer side of the rotating column 331. The support base 333 is mounted on the top of the rotating column 331. An elastic member 1 334 is mounted on the inner bottom wall of the support base 333. In this embodiment, the elastic member 1 334 is a spring. In other embodiments, the elastic member 1 334 is an elastic sheet.

[0058] Continue to refer Figure 5 and Figure 6 As shown, the material receiving assembly 34 includes a sliding plate 341 mounted on the top of an elastic member 334. The outer side of the sliding plate 341 is slidably connected to the inner wall of the support seat 333. The top of the sliding plate 341 is mounted with a fixed seat 342, which is an annular shape. The top side of the fixed seat 342 is mounted with a protective frame 343, which is in the shape of an arc. The top of the sliding plate 341 is mounted on both sides with vertical plates 344, and the top of the vertical plates 344 is mounted with a wedge 345.

[0059] When the broken sample passes through the second inner cylinder 322, the lower half of the sample falls into the fixed seat 342. The fixed seat 342 and the protective frame 343 prevent the sample from falling. At this time, the elastic member 1 334 is compressed under the action of gravity, and the sliding plate 341 drives the wedge block 1 345 downward through the vertical plate 344.

[0060] Continue to refer Figure 5 and Figure 6 As shown, the support assembly 35 includes two oppositely arranged baffles 351, and a groove 352 is provided on one side of the two baffles 351. The groove 352 is arc-shaped, and a wedge block 2 353 is installed on the other side of the two baffles 351. The wedge block 1 345 is located on the top of the wedge block 2 353.

[0061] like Figure 6 As shown, a connecting plate 354 is mounted on one side of each baffle 351. A first slide bar 355 is slidably connected to each connecting plate 354. A connecting bracket 357 is disposed outside the first slide bar 355 and is mounted on the inner wall of the connecting bracket 357. The bottom of one side of the connecting bracket 357 is mounted outside the support base 333. A second elastic member 356 is mounted between the connecting bracket 357 and the connecting plate 354. In this embodiment, the second elastic member 356 is a spring. In other embodiments, the second elastic member 356 is an elastic sheet. The sum of the elastic forces of the two second elastic members 356 is less than the elastic force of the first elastic member 334.

[0062] When the lower half of the sample falls onto the fixing seat 342, the wedge 1 345 moves downward and squeezes the wedge 2 353, so that the two baffles 351 approach each other, thereby reducing the distance between the two baffles 351, thereby blocking the upper half of the sample and separating the broken sample.

[0063] like Figures 5 to 7 As shown, the air supply assembly 36 includes a standpipe 361, a connecting pipe 362, and an air supply pipe 364. The standpipe 361 is mounted on one side of the inner bottom wall of the lower housing 311. The connecting pipe 362 is mounted on the bottom of one side of the standpipe 361, with the opening of the connecting pipe 362 facing the impeller 332. The air supply pipe 364 is mounted on the bottom of the other side of the standpipe 361. One end of the air supply pipe 364 passes through the lower housing 311 and is connected to an external fan. One side of the standpipe 361 is provided with a plurality of air outlets 363, which are arranged at equal intervals along the length of the standpipe 361 and are positioned toward the fixing base 342.

[0064] The external fan supplies air to the vertical pipe 361 through the air supply pipe 364. At this time, the vertical pipe 361 blows air toward the impeller 332 and the broken sample through the connecting pipe 362 and the blowing port 363 respectively. At this time, the impeller 332 drives the support seat 333 to rotate through the rotating column 331, thereby driving the broken sample to rotate, so as to quickly cool the sample.

[0065] like Figure 3 、 Figure 5 and Figure 8 As shown, the fixing mechanism includes two upper connecting assemblies 41 and two lower connecting assemblies 42. The two upper connecting assemblies 41 and the two lower connecting assemblies 42 are arranged relative to each other with the axis of the outer cylinder 1 221 as the center. The upper connecting assemblies 41 and the lower connecting assemblies 42 are slidably connected, with the upper connecting assemblies 41 located in the outer cylinder 1 221 and the lower connecting assemblies 42 located in the outer cylinder 2 321.

[0066] like Figure 3 、 Figure 8 and Figure 9As shown, the upper connecting assembly 41 includes a mounting frame 411, a material retaining plate 412, and a semi-threaded sleeve 413. The mounting frame 411 has a vertical section and a U-shaped section. The vertical section of the mounting frame 411 is located in the outer cylinder 221, and the U-shaped section of the mounting frame 411 is located in the upper shell 211. The U-shaped section of the mounting frame 411 is mounted on the top of the vertical section of the mounting frame 411. The material retaining plate 412 is mounted on the top of the U-shaped section of the mounting frame 411 and is located at the top of the inner cylinder 222. The semi-threaded sleeve 413 is mounted on the vertical section of the mounting frame 411. The material retaining plates 412 and semi-threaded sleeves 413 on the two upper connecting assemblies 41 can be connected to each other. After the two baffle plates 412 are docked, a conical material discharge space can be formed. The baffle plate 412 is located at the bottom end of the placement seat 25. After the two half-threaded sleeves 413 are docked, they can be threadedly connected to the top of the sample. The half-threaded sleeve 413 is arranged on the inner side of the outer cylinder 221 and at the bottom end of the inner cylinder 222.

[0067] Continue to refer Figure 3 、 Figure 8 and Figure 9 As shown, movable plates 414 are mounted on both sides of the vertical section of mounting bracket 1 (411). A slide bar 415 is slidably connected to the middle of movable plate 1 (414). One end of slide bar 415 is mounted on one side of fixed plate 1 (223). Elastic member 3 (416) is mounted between fixed plate 1 (223) and movable plate 1 (414). Elastic member 3 (416) is a spring. The vertical section of mounting bracket 1 (411) passes through the bottom end of outer cylinder 1 (221) and extends to the exterior of outer cylinder 1 (221). A slot is defined at the bottom end of outer cylinder 1 (221) for mounting bracket 1 (411) to slide.

[0068] like Figures 5 to 10 As shown, the lower connecting assembly 42 includes a second mounting frame 421, a connecting seat 422, and a second semi-threaded sleeve 423. The second semi-threaded sleeve 423 is mounted on one side of the second mounting frame 421. The two second semi-threaded sleeves 423 on the lower connecting assembly 42 can dock with each other. After docking, the two second semi-threaded sleeves 423 can be threadedly connected to the bottom end of the specimen. The second semi-threaded sleeve 423 is arranged on the inner side of the second outer cylinder 321 and located at the top of the second inner cylinder 322. The top of the second mounting frame 421 passes through the second outer cylinder 321 and extends to the outside of the second outer cylinder 321. The top of the second outer cylinder 321 is provided with a slot for the second mounting frame 421 to slide. The top of the second mounting frame 421 is mounted with a connecting seat 422, which is slidably connected to the vertical section of the first mounting frame 411.

[0069] like Figure 5 and Figure 8As shown, movable plates 2 424 are installed on both sides of the mounting frame 2 421, and the middle part of the movable plate 2 424 is slidably connected with a slide rod 3 425, one end of the slide rod 3 425 is installed on one side of the fixed plate 2 323, and an elastic member 426 is installed between the fixed plate 2 323 and the movable plate 2 424, and the elastic member 426 is a spring.

[0070] Working Principle: When performing a tensile test on a specimen, the specimen is first placed in the placement seat 25. The specimen is held stationary by the material retaining plate 412. Adjusting shaft 242 then drives gear three 241 to rotate. Gear three 241 then drives the lead screw 231 on gear two 237, causing gear one 234 to move downward and position stopper 236 to be inserted into the specimen's slot, pushing the specimen downward. During this downward movement, gear one 234 meshes with gear two 237, causing position stopper 236 to rotate as it moves downward, driving the specimen downward and rotating.

[0071] As the specimen moves downward, it pushes the retaining plates 412 on both sides to move. During this movement, the retaining plates 412 drive the two half-threaded sleeves 1 413 away from each other via the mounting bracket 1 411. As the mounting bracket 1 411 moves, the elastic member 3 416 is stretched. Simultaneously, the mounting bracket 1 411 drives the two half-threaded sleeves 2 423 away from each other via the mounting bracket 2 421 on the connecting seat 422. As the mounting bracket 2 421 moves, the elastic member 4 426 is stretched. When the specimen completely passes through the retaining plates 412, the elastic members 3 416 and 4 426 return to their original positions, returning the two half-threaded sleeves 1 413 and the two half-threaded sleeves 2 423 to their original positions. The specimen then moves downward along the inner cylinder 1 222, with the bottom end of the specimen landing on the top of the two half-threaded sleeves 1 413.

[0072] As the lead screw 231 continues to rotate, the stopper 236 drives the specimen into the two half-threaded sleeves 413. As the stopper 236 continues to move downward, the bottom end of the specimen fully extends out of the two half-threaded sleeves 413 and screws into the two half-threaded sleeves 423, threading the top end of the specimen into the two half-threaded sleeves 413 and the bottom end into the two half-threaded sleeves 423. The specimen is now secured, and the adjustment shaft 242 is then rotated in the opposite direction. The lead screw 231 then rotates in the opposite direction, driving the stopper 236 upward and back to its original position.

[0073] After the sample is fixed, close the heating furnace 15 and control the heating furnace 15 to heat up through the controller 14. When the test temperature is reached, connect the high-temperature extensometer to the heating furnace 15, and then start the loading assembly 16 to stretch the sample. When the sample is broken, close the loading assembly 16, and then put a new sample into the placement seat 25. At this time, turn the adjustment shaft 242 again to fix the sample. During the fixing process of the new sample, the broken sample detaches from the two half-threaded sleeves 1 413 and the two half-threaded sleeves 2 423 and enters the inner cylinder 2 322, and then the broken sample falls onto the fixing seat 342 and the baffle 351 respectively. At this time, connect the external fan to the air supply pipe 364 to cool the broken sample. After cooling, take out the broken sample and test it.

[0074] While the broken sample is cooling, a new sample is heated in the heating furnace 15, thereby achieving the effect of fixing the new sample without opening the heating furnace 15. As a result, there is no need to cool the heating furnace 15, so that the heating furnace 15 can always maintain a constant heating temperature, reducing the heating cost of the sample and improving the detection efficiency of the sample.

[0075] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A high-temperature tensile testing device for aluminum alloys, comprising a tensile mechanism, characterized in that: The stretching mechanism is provided with a fixing mechanism, and the top and bottom of the fixing mechanism are provided with a feeding mechanism and a cooling mechanism respectively; The loading mechanism includes an upper mounting seat (21) arranged on the stretching mechanism, a placement seat (25) installed in the upper mounting seat (21), and an upper guide member (22) arranged below the placement seat (25). A lifting assembly (23) is provided on the inner top wall of the upper mounting seat (21) to drive the sample to rise and fall. A driving assembly (24) is engaged with the lifting assembly (23) so that the lifting assembly (23) drives the sample to rotate. The fixing mechanism includes two upper connecting assemblies (41) arranged opposite to each other and two lower connecting assemblies (42) arranged opposite to each other, the upper connecting assembly (41) includes a mounting frame (411) elastically connected to the upper guide member (22), a material blocking plate (412) arranged on the top of the mounting frame (411), and a semi-threaded sleeve (413) installed on the mounting frame (411), and the semi-threaded sleeve (413) is located inside the upper guide member (22); The lower connecting assembly (42) includes a second mounting frame (421) elastically connected to the cooling mechanism, a connecting seat (422) installed on the top of the second mounting frame (421), and a second semi-threaded sleeve (423) provided on the second mounting frame (421), wherein the second semi-threaded sleeve (423) is located on the inner side of the cooling mechanism, and the first mounting frame (411) is slidably connected to the connecting seat (422); The upper guide member (22) includes an outer cylinder (221) mounted on the bottom of the upper mounting seat (21) and an inner cylinder (222) arranged on the inner side of the outer cylinder (221), the top end of the inner cylinder (222) passes through the outer cylinder (221) and extends to the interior of the upper mounting seat (21), the baffle plate (412) is located at the top end of the inner cylinder (222), and the semi-threaded sleeve (413) is located at the bottom end of the inner cylinder (222); The lifting assembly (23) includes a lead screw (231), a threaded block (232), a gear 1 (234), a stopper (236) and a gear 2 (237), wherein the lead screw (231) is rotatably connected to the inner top wall of the upper mounting seat (21), the gear 2 (237) is mounted at the bottom end of the lead screw (231), the gear 1 (234) can mesh with the gear 2 (237), the threaded block (232) is threadedly connected to the lead screw (231), the threaded block (232) is slidably connected to the upper mounting seat (21), a rotating shaft (233) is rotatably connected to the threaded block (232), the gear 1 (234) is mounted on the rotating shaft (233), and the stopper (236) is mounted at the bottom end of the gear 1 (234); The driving assembly (24) includes an adjusting shaft (242) and a gear three (241) mounted on the adjusting shaft (242), the gear two (237) meshing with the gear three (241), and a mounting plate (243) rotatably connected to the adjusting shaft (242), the mounting plate (243) being mounted on the inner wall of the upper housing (211); The cooling mechanism comprises a lower mounting seat (31), a lower guide member (32), a rotating assembly (33), a material receiving assembly (34), a support assembly (35) and an air supply assembly (36), wherein the lower guide member (32) is mounted on the top of the lower mounting seat (31), the rotating assembly (33) is rotatably connected to the inner bottom wall of the lower mounting seat (31), the material receiving assembly (34) is arranged on the top of the rotating assembly (33), the support assembly (35) is located above the material receiving assembly (34), and the air supply assembly (36) is located on one side of the material receiving assembly (34); The lower guide member (32) includes an outer cylinder 2 (321) and an inner cylinder 2 (322) arranged in the outer cylinder 2 (321), the outer cylinder 2 (321) is mounted on the top of the lower mounting seat (31), the inner cylinder 1 (222) and the inner cylinder 2 (322) have the same inner diameter, the bottom end of the inner cylinder 2 (322) extends to the inside of the lower shell (311) and is located above the support assembly (35), and the semi-threaded sleeve 2 (423) is located at the top end of the inner cylinder 2 (322); The mounting frame 1 (411) has a vertical section and a U-shaped section. The vertical section of the mounting frame 1 (411) is located in the outer cylinder 1 (221). The U-shaped section of the mounting frame 1 (411) is located in the upper shell (211). The U-shaped section on the mounting frame 1 (411) is installed on the top of the vertical section of the mounting frame 1 (411). The baffle plate (412) is installed on the top of the U-shaped section of the mounting frame 1 (411) and is located at the top of the inner cylinder 1 (222). The semi-threaded sleeve 1 (413) is installed on the vertical section of the mounting frame 1 (411). The baffle plates (412) and the semi-threaded sleeves 1 (413) on the two upper connecting components (41) can be connected to each other.

2. The aluminum alloy high temperature tensile testing device according to claim 1, characterized in that: The rotating assembly (33) comprises a rotating column (331), an impeller (332) and a support seat (333); the rotating column (331) is rotatably connected to the inner bottom wall of the lower mounting seat (31); the impeller (332) is mounted on the outside of the rotating column (331); and the support seat (333) is mounted on the top end of the rotating column (331).

3. The aluminum alloy high temperature tensile testing device according to claim 2, characterized in that: The material receiving assembly (34) includes a sliding plate (341), the sliding plate (341) is elastically slidably connected to the support seat (333) in the vertical direction, a fixed seat (342) is installed on the sliding plate (341), a protective frame (343) is installed on one side of the top of the fixed seat (342), vertical plates (344) are installed on both sides of the top of the sliding plate (341), and a wedge block (345) is installed on the vertical plate (344).

4. The aluminum alloy high temperature tensile testing device according to claim 3, characterized in that: The support assembly (35) includes two baffles (351) arranged opposite to each other, a groove (352) is provided on one side of the baffle (351), a wedge block 2 (353) is installed on the other side of the baffle (351), the wedge block 1 (345) is located on the top of the wedge block 2 (353), and a connecting plate (354) is installed on both baffles (351), and a slide rod 1 (355) is slidably connected to the two connecting plates (354), a connecting frame (357) is provided on the outer side of the slide rod 1 (355), the slide rod 1 (355) is installed on the inner wall of the connecting frame (357), the connecting frame (357) is installed on the support seat (333), and the connecting frame (357) is elastically connected to the connecting plate (354).

5. The aluminum alloy high temperature tensile testing device according to claim 1, characterized in that: The air supply assembly (36) comprises a vertical pipe (361), a connecting pipe (362) and an air supply pipe (364); the vertical pipe (361) is mounted on one side of the inner bottom wall of the lower mounting seat (31); the connecting pipe (362) is mounted on the bottom of one side of the vertical pipe (361); the air supply pipe (364) is mounted on the bottom of the other side of the vertical pipe (361); and a plurality of air blowing ports (363) are provided on one side of the vertical pipe (361).

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