Aluminum alloy high-temperature stretching detection device

Abstract

The invention relates to the technical field of metal stretching detection, and particularly discloses an aluminum alloy high-temperature stretching detection device which comprises a stretching mechanism, a fixing mechanism is arranged on the stretching mechanism, and a feeding mechanism and a cooling mechanism are arranged at the top and the bottom of the fixing mechanism respectively; the feeding mechanism comprises an upper mounting seat arranged on the stretching mechanism, a placement seat mounted in the upper mounting seat and an upper guide piece arranged below the placement seat, and a lifting assembly is arranged on the inner top wall of the upper mounting seat; according to the aluminum alloy high-temperature tensile detection device disclosed by the invention, a new sample is placed in a placement seat and is driven to move downwards through a lifting assembly, and in the downward moving process of the new sample, a material baffle drives two half-thread sleeves I and two half-thread sleeves II to be far away from each other through two mounting frames I and two mounting frames II respectively, so that the two half-thread sleeves I and the two half-thread sleeves II are separated from each other; therefore, the fractured sample automatically falls into the cooling mechanism to be collected, shutdown cooling is not needed in the process of replacing a new sample, and the effect of rapidly replacing the sample is achieved.

Description

Technical Field

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

[0002] The high-temperature tensile testing of aluminum alloy is an important means to evaluate its mechanical properties in extreme temperature environments, and is usually used in fields such as aerospace, automotive manufacturing, and building materials. The high-temperature tensile test is a tensile test carried out at a high temperature above room temperature. During the high-temperature tensile test, in addition to considering stress and strain, two parameters of temperature and time also need to be considered. Temperature has a great influence on the high-temperature tensile properties, so strict requirements are imposed on the control of temperature. The specimen is generally heated by an electric furnace, and there should be a sufficient isothermal zone in the working space of the furnace, and the temperature is automatically controlled by an instrument.

[0003] A high-temperature tensile testing device with atmosphere protection disclosed in the Chinese patent application document with the authorization announcement number CN110879180B. This high-temperature tensile testing device with atmosphere protection is connected to an optical microscopic observation system through a high-temperature observation window; the transmission control system includes a moving crossbeam, a bidirectional ball screw, and a tensile shaft. This device can realize the high-temperature tensile test of the specimen without oxidation, providing a research platform for the analysis of high-temperature fracture of materials.

[0004] However, the structural design of the above-mentioned related technology: Although it can realize the rapid heating and cooling of the specimen, when there are many specimens to be tensile-tested, it is necessary to first open the heating furnace to take out the specimen, then place a new specimen, and finally close the heating furnace and heat the specimen. Such operations require repeatedly heating and cooling the heating furnace, which will not only increase the detection cost, but also take a lot of time to replace the specimen after the detection is completed, resulting in low detection efficiency.

[0005] Therefore, we propose a high-temperature tensile testing device for aluminum alloy to solve the problems raised above. Summary of the Invention

[0006] The present invention provides a high-temperature tensile testing device for aluminum alloy, aiming to solve the problem that a large amount of time is required to replace the specimen when there are many specimens to be detected in the related technology.

[0007] The high-temperature tensile testing device for aluminum alloy of the present invention includes a tensile mechanism, a fixing mechanism is provided on the tensile mechanism, and a feeding mechanism and a cooling mechanism are respectively provided at the top and bottom of the fixing mechanism; The feeding mechanism includes an upper mounting seat provided on the tensile mechanism, a placing seat installed in the upper mounting seat, and an upper guiding member provided below the placing seat. An elevating assembly is provided on the inner top wall of the upper mounting seat to drive the specimen to move up and down. A driving assembly is meshed with the elevating assembly to make the elevating assembly drive the specimen to rotate; The fixing mechanism includes two oppositely arranged upper connection components and two oppositely arranged lower connection components. The upper connection component includes a mounting bracket one elastically connected to the upper guide, a baffle plate arranged on the top of the mounting bracket one, and a half-threaded sleeve one mounted on the mounting bracket one. The half-threaded sleeve one is located inside the upper guide. The lower connection component includes a mounting bracket two elastically connected in the cooling mechanism, a connection seat mounted on the top of the mounting bracket two, and a half-threaded sleeve two arranged on the mounting bracket two. The half-threaded sleeve two is located inside the cooling mechanism. The mounting bracket one is slidably connected to the connection seat.

[0008] Place the specimen in the placement seat and position it between the two baffle plates. Then drive the lifting component to operate through the driving component. At this time, the lifting component drives the specimen to rotate and move downward. During the process of the specimen passing through the two baffle plates, the baffle plates drive the two half-threaded sleeves one and the two half-threaded sleeves two to move away from each other through the two mounting brackets one and the two mounting brackets two respectively. When the specimen passes through the two baffle plates, the two half-threaded sleeves one and the two half-threaded sleeves two reset. At this time, the lifting component continues to drive the specimen to rotate and move downward, so that the two ends of the specimen are respectively threadedly connected to the two half-threaded sleeves one and the two half-threaded sleeves two to fix the specimen. When the specimen breaks, place a new specimen in the placement seat and drive the new specimen to move downward through the lifting component. During the downward movement of the new specimen, the broken specimen automatically falls into the cooling mechanism for collection. And during the process of replacing the new specimen, there is no need to stop the machine for cooling, achieving the effect of quickly replacing the specimen, thereby improving the detection efficiency.

[0009] Preferably, the upper guide includes an outer cylinder one mounted on the bottom of the upper mounting seat and an inner cylinder one arranged inside the outer cylinder one. The top end of the inner cylinder one penetrates the outer cylinder one and extends into the interior of the upper mounting seat. The baffle plate is located at the top end of the inner cylinder one, and the half-threaded sleeve one is located at the bottom end of the inner cylinder one.

[0010] Preferably, the lifting component includes a lead screw, a threaded block, a gear one, a limiting member, and a gear two. The lead screw is rotatably connected to the inner top wall of the upper mounting seat. The gear two is mounted at the bottom end of the lead screw. The gear one can mesh with the gear two. The threaded block is threadedly connected to the lead screw. The threaded block is slidably connected to the upper mounting seat. A rotating shaft is rotatably connected to the threaded block. The gear one is mounted on the rotating shaft. The limiting member is mounted at the bottom end of the gear one.

[0011] Preferably, the driving component includes an adjusting shaft and a gear three mounted on the adjusting shaft. The gear two meshes with the gear three. An installation plate is rotatably connected to the adjusting shaft. The installation plate is mounted on the inner wall of the upper housing.

[0012] Rotate the adjustment shaft. The adjustment shaft drives the lead screw on gear two to rotate through gear three. The lead screw drives gear one to move downward through the threaded block. When gear one moves downward, it meshes with gear two. At this time, gear one rotates while moving downward, thereby driving the limiting member to rotate while moving downward to drive the specimen to rotate while moving downward.

[0013] Preferably, the cooling mechanism includes a lower mounting base, a lower guiding member, a rotating assembly, a material receiving assembly, a supporting assembly, and a air supply assembly. The lower guiding member is installed on the top of the lower mounting base. The rotating assembly is rotatably connected to the inner bottom wall of the lower mounting base. The material receiving assembly is arranged at the top end of the rotating assembly. The supporting assembly is located above the material receiving assembly. The air supply assembly is located on one side of the material receiving assembly.

[0014] Preferably, the lower guiding member includes an outer cylinder two and an inner cylinder two arranged in the outer cylinder two. The outer cylinder two is installed on the top of the lower mounting base. The inner cylinder one has the same inner diameter as the inner cylinder two. The bottom end of the inner cylinder two extends into the interior of the lower housing and is located above the supporting assembly. The half-threaded sleeve two is located at the top end of the inner cylinder two.

[0015] Preferably, the rotating assembly includes a rotating column, an impeller, and a supporting seat. The rotating column is rotatably connected to the inner bottom wall of the lower mounting base. The impeller is installed on the outside of the rotating column. The supporting seat is installed at the top end of the rotating column.

[0016] Preferably, the material receiving assembly includes a sliding disk. The sliding disk is elastically slidably connected to the supporting seat in the vertical direction. A fixing seat is installed on the sliding disk. A protective frame is installed on one side of the top of the fixing seat. Vertical plates are installed on both sides of the top end of the sliding disk. Wedge block one is installed on the vertical plates.

[0017] After the fractured specimen falls, the lower half of the specimen enters the fixing seat for collection. At the same time, through the blocking of the fixing seat and the protective frame, it is possible to prevent the lower half of the specimen from tipping over.

[0018] Preferably, the supporting assembly includes two oppositely arranged baffles. A groove is formed on one side of the baffle. A wedge block two is installed on the other side of the baffle. Wedge block one is located on the top of wedge block two. Connecting plates are installed on both baffles. A first sliding rod is slidably connected to the two connecting plates. A connecting frame is arranged on the outside of the first sliding rod. The first sliding rod is installed on the inner wall of the connecting frame. The connecting frame is installed on the supporting seat. The connecting frame is elastically connected to the connecting plate.

[0019] When the lower half of the specimen falls into the fixing seat, the sliding disk drives wedge block one to move downward through the vertical plate. Wedge block one presses wedge block two, causing the two baffles to approach each other to narrow the distance between the two baffles, thereby blocking the upper half of the specimen and separating the fractured specimen.

[0020] Preferably, the air supply assembly includes a riser pipe, a connecting pipe, and an air supply pipe. The riser pipe is installed on one side of the inner bottom wall of the lower mounting seat. The connecting pipe is installed at the bottom on one side of the riser pipe. The air supply pipe is installed at the bottom on the other side of the riser pipe. A plurality of air blowing ports are formed on one side of the riser pipe.

[0021] The air supply pipe can be connected to an external blower. The external blower can supply air to the riser pipe through the air supply pipe. At this time, the connecting pipe blows air to the impeller. The rotation of the impeller can drive the broken specimen to rotate. At the same time, the air blowing ports blow air to the broken specimen to accelerate the cooling of the specimen.

[0022] With the above technical solution, the beneficial effect of the present invention is as follows: During detection, the two ends of the specimen are respectively threadedly connected to the two half-threaded sleeves one and the two half-threaded sleeves two to fix the specimen. After the specimen breaks, a new specimen is placed in the placement seat and the lifting assembly drives the new specimen to move downward. During the downward movement of the new specimen, the baffle plate drives the two half-threaded sleeves one and the two half-threaded sleeves two to move away from each other through the two mounting brackets one and the two mounting brackets two, so that the broken specimen automatically falls into the cooling mechanism for collection. And during the process of replacing the new specimen, there is no need to stop the machine for cooling, achieving the effect of quickly replacing the specimen, thereby improving the detection efficiency. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment in the present invention.

[0024] Figure 2 It is a schematic diagram of the structure of the body of a specific embodiment in the present invention.

[0025] Figure 3 It is a schematic diagram of the internal structure of the upper housing of a specific embodiment in the present invention.

[0026] Figure 4 It is a schematic diagram of the structure of the lifting assembly of a specific embodiment in the present invention.

[0027] Figure 5 It is a schematic diagram of the internal structure of the lower housing of a specific embodiment in the present invention.

[0028] Figure 6 It is a schematic diagram of the structure of the material receiving assembly of a specific embodiment in the present invention.

[0029] Figure 7 It is a schematic diagram of the structure of the air supply assembly of a specific embodiment in the present invention.

[0030] Figure 8 It is a schematic diagram of the structure of the upper connection assembly and the lower connection assembly of a specific embodiment in the present invention.

[0031] Figure 9Schematic diagram of the baffle plate of the specific embodiment in the present invention.

[0032] Figure 10 Schematic diagram of the connection seat of the specific embodiment in the present invention.

[0033] Reference numerals: 11, body; 12, frame; 13, top frame; 14, controller; 15, heating furnace; 16, loading assembly; 21, upper mounting seat; 211, upper housing; 212, connecting head; 213, slide bar; 22, upper guiding member; 221, outer cylinder one; 222, inner cylinder one; 223, fixing plate one; 23, lifting assembly; 231, lead screw; 232, threaded block; 233, rotating shaft; 234, gear one; 235, connecting shaft; 236, limiting member; 237, gear two; 24, driving assembly; 241, gear three; 242, adjusting shaft; 243, mounting plate; 25, placing seat; 31, lower mounting seat; 311, lower housing; 312, mounting head; 32, lower guiding member; 321, outer cylinder two; 322, inner cylinder two; 323, fixing plate two; 33, rotating assembly; 331, rotating column; 332, impeller; 333, support seat; 334, elastic member one; 34, material receiving assembly; 341, sliding disk; 342, fixing seat; 343, protective frame; 344, vertical plate; 345, wedge block one; 35, support assembly; 351, baffle plate; 352, groove; 353, wedge block two; 354, connecting plate; 355, slide bar one; 356, elastic member two; 357, connecting frame; 36, air supply assembly; 361, riser pipe; 362, connecting pipe; 363, air blowing port; 364, air supply pipe; 41, upper connecting assembly; 411, mounting frame one; 412, baffle plate; 413, half-threaded sleeve one; 414, movable plate one; 415, slide bar two; 416, elastic member three; 42, lower connecting assembly; 421, mounting frame two; 422, connection seat; 423, half-threaded sleeve two; 424, movable plate two; 425, slide bar three; 426, elastic member four. Detailed description of the specific implementation

[0034] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention.

[0035] As Figures 1 to 10As shown in the figure, the high-temperature tensile testing device for aluminum alloy of the present invention includes a tensile mechanism for tensile testing of a specimen. A fixing mechanism is provided on the tensile mechanism for fixing the specimen. A feeding mechanism is provided on the top of the fixing mechanism for loading the specimen into the fixing mechanism. A cooling mechanism is provided at the bottom of the fixing mechanism for cooling the tensile-tested specimen.

[0036] Install the specimen on the fixing mechanism through the feeding mechanism, and then apply a load to the cooling mechanism through the tensile mechanism. After the specimen is broken, install a new specimen through the feeding mechanism. At this time, the broken specimen falls into the cooling mechanism for cooling to facilitate quick removal by the staff.

[0037] As Figure 1 and Figure 2 As shown in the figure, the tensile mechanism includes a body 11, a frame 12 and a top frame 13. The body 11 is installed at the bottom of the frame 12, the top frame 13 is installed at the top of the frame 12, and 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 installed on one side of the body 11 to control the heating temperature of the heating furnace 15. A loading component 16 is installed on the top of the body 11, and the cooling mechanism is detachably connected to the loading component 16.

[0038] As Figures 1 to 3 As shown in the figure, the feeding 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 component 23 and a driving component 24. The upper guide 22 is provided at the bottom of the upper mounting seat 21. The placement seat 25 is provided inside the upper mounting seat 21 and above the upper guide 22. The lifting component 23 is provided on the inner top wall of the upper mounting seat 21, and the driving component 24 is meshed and connected to one side of the lifting component 23.

[0039] Place the specimen in the placement seat 25, start the driving component 24, and the driving component 24 drives the specimen to move vertically downward and rotate through the lifting component 23, so that the specimen passes through the upper guide 22 and is installed on the fixing mechanism to realize the fixing of the specimen.

[0040] Continue to refer to Figures 1 to 3 As shown in the figure, the upper mounting seat 21 includes an upper housing 211. A connecting head 212 is installed on the top of the upper housing 211, and the connecting head 212 is detachably connected to the bottom of the top frame 13. A slide bar 213 is installed on one side of the inner wall of the upper housing 211. The placement seat 25 is installed below the inside of the upper housing 211 through a fixing block. In this embodiment, the placement seat 25 is a cylinder with an opening, and the specimen can be placed inside 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 housing 211, and opening the door of the upper housing 211 can place the specimen in the placement seat 25.

[0041] As Figure 2 andFigure 3 As shown in Figure 3 , the upper guide member 22 includes 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 installed at the bottom of the upper housing 211, and the inner bottom wall of the upper housing 211 and the top end of the outer cylinder 221 are on the same horizontal line. The top end of the inner cylinder 222 penetrates 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. Fixed plates 223 are installed on both sides of the inner cylinder 222, and the fixed plates 223 are installed on the inner wall of the outer cylinder 221.

[0042] As Figure 3 and Figure 4 shown in Figure 4 , 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. The second gear 237 is installed 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 can mesh with the second gear 237. The threaded block 232 is threadedly connected to the outside of the lead screw 231, and the threaded block 232 is slidably connected to the slide bar 213. A rotating shaft 233 is rotatably connected to the bottom of the threaded block 232. The top end of the first gear 234 is installed at the bottom end of the rotating shaft 233. A connecting shaft 235 is installed at the bottom end of the first gear 234, and a limiting member 236 is installed at the bottom end of the connecting shaft 235. In this embodiment, the limiting member 236 is polygonal, and a groove adapted to the limiting member 236 is provided at the top end of the specimen. The placement seat 25 is coaxially arranged with the limiting member 236.

[0043] Continuing to refer to Figure 3 and Figure 4 shown in Figure 4 , the driving assembly 24 includes an adjusting shaft 242 and a third gear 241 installed on the outside of the adjusting shaft 242. The second gear 237 meshes with the third gear 241. 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 housing 211.

[0044] The adjusting shaft 242 drives the lead screw 231 on the second gear 237 to rotate through the third gear 241. The lead screw 231 drives the first gear 234 on the rotating shaft 233 to move downward through the threaded block 232. At the same time, the first gear 234 drives the limiting member 236 to move downward and insert into the groove of the specimen to push the specimen downward. During the downward movement of the first gear 234, it meshes with the second gear 237, so that the first gear 234 rotates while moving downward to drive the specimen to rotate while moving downward, and the specimen is installed into the fixing mechanism. In another embodiment, a servo motor is installed at the top end of the mounting plate 243, and the driving shaft of the servo motor is fixed to the top end of the adjusting shaft 242.

[0045] It can be understood that in other embodiments, the control unit can also adopt the driving modes of a motor and a cylinder to realize the rotation and lifting of the limiting member 236. The motor is installed on the inner top wall of the upper housing 211, the fixed end of the cylinder is installed on the driving shaft of the motor, the limiting member 236 is installed on the movable end of the cylinder, and the motor can drive the limiting member 236 to rotate through the cylinder. During the rotation of the limiting member 236, the telescopic movement of the movable end of the cylinder can drive the limiting member 236 to lift and lower.

[0046] As Figure 1 , Figure 2 and Figure 5 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 a air supply assembly 36. The lower guide member 32 is installed 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 end of the rotating assembly 33. The support assembly 35 is located above the material receiving assembly 34. The air supply assembly 36 is located on one side of the material receiving assembly 34.

[0047] After the fractured specimen passes through the lower guide member 32 and respectively falls onto the material receiving assembly 34 and the support assembly 35, then an external blower is connected to the air supply assembly 36 to enable the air supply assembly 36 to blow air to the rotating assembly 33, the material receiving assembly 34 and the support assembly 35. Meanwhile, the rotating assembly 33 drives the material receiving assembly 34 and the support assembly 35 to rotate to cool the specimens on the material receiving assembly 34 and the support assembly 35.

[0048] Continue to refer to Figure 1 , Figure 2 and Figure 5 shown, the lower mounting seat 31 includes a lower housing 311 and a mounting head 312 installed at the bottom of the lower housing 311. The mounting head 312 is installed on the loading assembly 16. After the specimen is installed on the fixing mechanism, the loading assembly 16 applies a load to the mounting head 312 so that the mounting head 312 stretches the specimen through the lower housing 311. A door corresponding to the material receiving assembly 34 is opened on the lower housing 311, and the cooled specimen can be taken out by opening the door on the lower housing 311.

[0049] As Figure 2 , Figure 3 and Figure 5 shown, the lower guide member 32 includes an outer cylinder two 321 and an inner cylinder two 322 arranged in the outer cylinder two 321. The bottom end of the outer cylinder two 321 is installed on the top of the lower housing 311. The outer cylinder two 321 and the inner cylinder two 322 are coaxially arranged, and the inner diameter of the inner cylinder one 222 is the same as that of the inner cylinder two 322. The bottom end of the inner cylinder two 322 extends into the interior of the lower housing 311 and is located above the support assembly 35. Fixing plates two 323 are installed on both sides of the inner cylinder two 322, and the fixing plates two 323 are fixed to the inner wall of the outer cylinder two 321.

[0050] As shown in Figure 5 and Figure 6 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 installed on the outer side of the rotating column 331. The support base 333 is installed at the top of the rotating column 331. A first elastic member 334 is installed on the inner bottom wall of the support base 333. In this embodiment, the first elastic member 334 is a spring. In other embodiments, the first elastic member 334 is an elastic sheet.

[0051] Continuing to refer to Figure 5 and Figure 6 shown, the material receiving assembly 34 includes a sliding disk 341 installed at the top of the first elastic member 334. The outer side of the sliding disk 341 is slidably connected to the inner wall of the support base 333. A fixing base 342 is installed at the top of the sliding disk 341. The fixing base 342 is in a circular ring shape. A protective frame 343 is installed on one side of the top of the fixing base 342. The shape of the protective frame 343 is arc-shaped. Vertical plates 344 are installed on both sides of the top of the sliding disk 341. A first wedge block 345 is installed at the top of the vertical plates 344.

[0052] When the broken specimen passes through the second inner cylinder 322, the lower half of the specimen falls into the fixing base 342. Through the blocking of the fixing base 342 and the protective frame 343, the specimen can be prevented from tipping over. At this time, under the action of gravity, the first elastic member 334 is compressed, and at the same time, the sliding disk 341 drives the first wedge block 345 to move downward through the vertical plates 344.

[0053] Continuing to refer to Figure 5 and Figure 6 shown, the support assembly 35 includes two oppositely arranged baffles 351. Grooves 352 are formed on one side of each of the two baffles 351. The shape of the grooves 352 is arc-shaped. Second wedge blocks 353 are installed on the other side of each of the two baffles 351. The first wedge block 345 is located on the top of the second wedge block 353.

[0054] As shown in Figure 6 shown, connecting plates 354 are installed on one side of each of the two baffles 351. A first sliding rod 355 is slidably connected to the two connecting plates 354. A connecting frame 357 is arranged on the outer side of the first sliding rod 355. The first sliding rod 355 is installed on the inner wall of the connecting frame 357. The bottom of one side of the connecting frame 357 is installed on the outer side of the support base 333. A second elastic member 356 is installed between the connecting frame 357 and the connecting plates 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.

[0055] When the lower half of the specimen falls onto the fixed seat 342, the first wedge 345 moves downward and presses the second wedge 353, causing the two baffles 351 to approach each other, narrowing the distance between the two baffles 351, thereby blocking the upper half of the specimen and separating the fractured specimen.

[0056] As Figures 5 to 7 shown, the air supply assembly 36 includes a riser pipe 361, a connecting pipe 362, and an air supply duct 364. The riser pipe 361 is installed on one side of the inner bottom wall of the lower housing 311. The connecting pipe 362 is installed at the bottom of one side of the riser pipe 361, and the opening of the connecting pipe 362 faces the impeller 332. The air supply duct 364 is installed at the bottom of the other side of the riser pipe 361. One end of the air supply duct 364 penetrates through the lower housing 311 and is connected to an external fan. A plurality of air blowing openings 363 are provided on one side of the riser pipe 361. The plurality of air blowing openings 363 are arranged at equal intervals along the length direction of the riser pipe 361, and the air blowing openings 363 are arranged facing the fixed seat 342.

[0057] The external fan supplies air to the riser pipe 361 through the air supply duct 364. At this time, the riser pipe 361 blows air to the impeller 332 and the fractured specimen through the connecting pipe 362 and the air blowing openings 363 respectively. At this time, the impeller 332 drives the support seat 333 to rotate through the rotating column 331, thereby driving the fractured specimen to rotate to quickly cool the specimen.

[0058] As Figure 3 、 Figure 5 and Figure 8 shown, the fixing mechanism includes two upper connecting components 41 and two lower connecting components 42. The two upper connecting components 41 and the two lower connecting components 42 are oppositely arranged with the axis of the first outer cylinder 221 as the center. The upper connecting component 41 and the lower connecting component 42 are slidably connected. The upper connecting component 41 is located in the first outer cylinder 221, and the lower connecting component 42 is located in the second outer cylinder 321.

[0059] As Figure 3 、 Figure 8 and Figure 9As shown, the upper connection component 41 includes a first mounting bracket 411, a baffle 412, and a first half-threaded sleeve 413. The first mounting bracket 411 has a vertical section and a U-shaped section. The vertical section of the first mounting bracket 411 is located in the first outer cylinder 221, and the U-shaped section of the first mounting bracket 411 is located in the upper housing 211. The U-shaped section on the first mounting bracket 411 is mounted on the top of the vertical section of the first mounting bracket 411. The baffle 412 is mounted on the top of the U-shaped section of the first mounting bracket 411 and is located at the top end of the first inner cylinder 222. The first half-threaded sleeve 413 is mounted on the vertical section of the first mounting bracket 411. The baffles 412 and the first half-threaded sleeves 413 on the two upper connection components 41 can be docked with each other. After the two baffles 412 are docked, a conical blanking space can be formed. The baffle 412 is located at the bottom end of the placement seat 25. After the two first half-threaded sleeves 413 are docked, they can be threadedly connected to the top end of the specimen. The first half-threaded sleeve 413 is arranged inside the first outer cylinder 221 and is located at the bottom end of the first inner cylinder 222.

[0060] Continue to refer to Figure 3 、 Figure 8 and Figure 9 As shown, movable plates 414 are mounted on both sides of the vertical section of the first mounting bracket 411. A second sliding rod 415 is slidably connected to the middle of the movable plate 414. One end of the second sliding rod 415 is mounted on one side of the first fixing plate 223. An elastic member 416, which is a spring, is mounted between the first fixing plate 223 and the movable plate 414. The vertical section of the first mounting bracket 411 penetrates through the bottom end of the first outer cylinder 221 and extends to the outside of the first outer cylinder 221. A groove for the first mounting bracket 411 to slide is provided at the bottom end of the first outer cylinder 221.

[0061] As Figures 5 to 10 shown, the lower connection component 42 includes a second mounting bracket 421, a connection seat 422, and a second half-threaded sleeve 423. The second half-threaded sleeve 423 is mounted on one side of the second mounting bracket 421. The second half-threaded sleeves 423 on the two lower connection components 42 can be docked with each other. After the two second half-threaded sleeves 423 are docked, they can be threadedly connected to the bottom end of the specimen. The second half-threaded sleeve 423 is arranged inside the second outer cylinder 321 and is located at the top end of the second inner cylinder 322. The top of the second mounting bracket 421 penetrates through the second outer cylinder 321 and extends to the outside of the second outer cylinder 321. A groove for the second mounting bracket 421 to slide is provided at the top end of the second outer cylinder 321. A connection seat 422 is mounted on the top of the second mounting bracket 421. The connection seat 422 is slidably connected to the vertical section of the first mounting bracket 411.

[0062] As Figure 5 and Figure 8As shown, movable plates II 424 are installed on both sides of the mounting frame II 421. A slide bar III 425 is slidably connected to the middle of the movable plate II 424. One end of the slide bar III 425 is installed on one side of the fixed plate II 323. An elastic member IV 426 is installed between the fixed plate II 323 and the movable plate II 424. The elastic member IV 426 is a spring.

[0063] Working principle: When performing tensile testing on the specimen, first place the specimen in the placement seat 25. At this time, the specimen remains stationary under the blockage of the baffle 412. Then, drive the gear III 241 to rotate through the adjustment shaft 242. The gear III 241 drives the lead screw 231 on the gear II 237 to rotate, causing the gear I 234 to move downward and the limiting member 236 to insert into the groove of the specimen to push the specimen downward. During the downward movement of the gear I 234, it meshes with the gear II 237, so that the limiting member 236 rotates while moving downward, driving the specimen to rotate while moving downward.

[0064] During the downward movement of the specimen, it pushes the baffle plates 412 on both sides to move. During the movement of the baffle plates 412, the baffle plates 412 drive the two half-threaded sleeves I 413 to move away from each other through the mounting frame I 411. When the mounting frame I 411 moves, the elastic member III 416 is stretched. At the same time, the mounting frame I 411 drives the two half-threaded sleeves II 423 to move away from each other through the mounting frame II 421 on the connecting seat 422. When the mounting frame II 421 moves, the elastic member IV 426 is stretched. When the specimen completely passes through the baffle 412, the elastic member III 416 and the elastic member IV 426 reset, causing the two half-threaded sleeves I 413 and the two half-threaded sleeves II 423 to reset. Then the specimen moves downward along the inner cylinder I 222 and the bottom end of the specimen falls onto the top ends of the two half-threaded sleeves I 413.

[0065] As the lead screw 231 continues to rotate, the limiting member 236 drives the specimen to screw into the two half-threaded sleeves I 413. As the limiting member 236 continues to move downward, the bottom end of the specimen completely extends out of the two half-threaded sleeves I 413 and the bottom end of the specimen screws into the two half-threaded sleeves II 423, so that the top end of the specimen is threadedly connected to the two half-threaded sleeves I 413, and the bottom end of the specimen is threadedly connected to the two half-threaded sleeves II 423. At this time, the fixation of the specimen is completed, and then reverse-rotate the adjustment shaft 242. At this time, the lead screw 231 rotates in the reverse direction, driving the limiting member 236 to move upward and reset.

[0066] After the specimen is fixed, close the heating furnace 15 and control the heating furnace 15 to increase the temperature through the controller 14. When the test temperature is reached, connect the high-temperature extensometer and put it into the heating furnace 15, and then start the loading assembly 16 to stretch the specimen. When the specimen is broken, turn off the loading assembly 16, and then put a new specimen into the placing seat 25. At this time, rotate the adjusting shaft 242 again to fix the specimen. During the fixing process of the new specimen, the broken specimen detaches from the two half-threaded sleeves I 413 and the two half-threaded sleeves II 423 and enters the inner cylinder II 322, and then the broken specimens respectively fall onto the fixing seat 342 and the baffle 351. At this time, connect the external fan to the air supply pipe 364 to cool the broken specimen. After the cooling is completed, take out the broken specimen and conduct detection.

[0067] During the cooling process of the broken specimen, the new specimen is heated in the heating furnace 15, achieving the effect of fixing the new specimen without opening the heating furnace 15, so that there is no need to cool the heating furnace 15, enabling the heating furnace 15 to always maintain a constant heating temperature, reducing the heating cost of the specimen, and improving the detection efficiency of the specimen.

[0068] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An aluminum alloy high-temperature tensile testing device, including a tensile mechanism, characterized in that, A fixing mechanism is provided on the stretching mechanism, and a feeding mechanism and a cooling mechanism are respectively provided at the top and bottom of the fixing mechanism; The feeding mechanism includes an upper mounting seat (21) arranged on the stretching mechanism, a placing seat (25) installed in the upper mounting seat (21), and an upper guiding member (22) arranged below the placing seat (25). A lifting assembly (23) is provided on the inner top wall of the upper mounting seat (21) to drive the specimen to lift and lower. A driving assembly (24) is meshed and connected to the lifting assembly (23) to enable the lifting assembly (23) to drive the specimen to rotate; The fixing mechanism includes two oppositely arranged upper connecting components (41) and two oppositely arranged lower connecting components (42). The upper connecting component (41) includes a mounting frame one (411) elastically connected to the upper guiding member (22), a material blocking plate (412) arranged on the top of the mounting frame one (411), and a half-threaded sleeve one (413) installed on the mounting frame one (411). The half-threaded sleeve one (413) is located inside the upper guiding member (22); The lower connecting component (42) includes a mounting frame two (421) elastically connected in the cooling mechanism, a connecting seat (422) installed on the top of the mounting frame two (421), and a half-threaded sleeve two (423) arranged on the mounting frame two (421). The half-threaded sleeve two (423) is located inside the cooling mechanism, and the mounting frame one (411) is slidably connected to the connecting seat (422).

2. The aluminum alloy high-temperature tensile testing device according to claim 1, wherein, The upper guiding member (22) includes an outer cylinder one (221) installed at the bottom of the upper mounting seat (21) and an inner cylinder one (222) arranged inside the outer cylinder one (221). The top end of the inner cylinder one (222) penetrates through the outer cylinder one (221) and extends into the inside of the upper mounting seat (21). The material blocking plate (412) is located at the top end of the inner cylinder one (222), and the half-threaded sleeve one (413) is located at the bottom end of the inner cylinder one (222).

3. The aluminum alloy high-temperature tensile testing device according to claim 2, wherein, The lifting assembly (23) includes a lead screw (231), a threaded block (232), a gear one (234), a limiting member (236), and a gear two (237). The lead screw (231) is rotatably connected to the inner top wall of the upper mounting seat (21). The gear two (237) is installed at the bottom end of the lead screw (231). The gear one (234) can be meshed with the gear two (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 one (234) is installed on the rotating shaft (233). The limiting member (236) is installed at the bottom end of the gear one (234).

4. The aluminum alloy high-temperature tensile testing device according to claim 3, characterized in that, The driving assembly (24) includes an adjusting shaft (242) and a gear three (241) installed on the adjusting shaft (242). The gear two (237) is meshed with the gear three (241). An installation plate (243) is rotatably connected to the adjusting shaft (242). The installation plate (243) is installed on the inner wall of the upper housing (211).

5. The aluminum alloy high-temperature tensile testing device according to claim 4, characterized in that, The cooling mechanism includes a lower mounting base (31), a lower guide (32), a rotating assembly (33), a material receiving assembly (34), a support assembly (35), and a air supply assembly (36). The lower guide (32) is mounted on the top of the lower mounting base (31). The rotating assembly (33) is rotatably connected to the inner bottom wall of the lower mounting base (31). The material receiving assembly (34) is arranged at the top end of the rotating assembly (33). The support assembly (35) is located above the material receiving assembly (34). The air supply assembly (36) is located on one side of the material receiving assembly (34).

6. The aluminum alloy high-temperature tensile testing device according to claim 5, wherein, The lower guide (32) includes an outer cylinder two (321) and an inner cylinder two (322) arranged in the outer cylinder two (321). The outer cylinder two (321) is mounted on the top of the lower mounting base (31). The inner cylinder one (222) has the same inner diameter as the inner cylinder two (322). The bottom end of the inner cylinder two (322) extends into the interior of the lower housing (311) and is located above the support assembly (35). The half-threaded sleeve two (423) is located at the top end of the inner cylinder two (322).

7. The aluminum alloy high-temperature tensile testing device according to claim 5, wherein, 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 mounting base (31). The impeller (332) is mounted on the outside of the rotating column (331). The support base (333) is mounted at the top end of the rotating column (331).

8. The aluminum alloy high-temperature tensile testing device according to claim 7, wherein, The material receiving assembly (34) includes a sliding disc (341). The sliding disc (341) is elastically slidably connected to the support base (333) in the vertical direction. A fixing base (342) is mounted on the sliding disc (341). A protective frame (343) is mounted on one side of the top of the fixing base (342). Vertical plates (344) are mounted on both sides of the top end of the sliding disc (341). Wedge blocks one (345) are mounted on the vertical plates (344).

9. The aluminum alloy high-temperature tensile testing device according to claim 8, characterized in that, The support assembly (35) includes two oppositely arranged baffles (351). A groove (352) is formed on one side of the baffle (351). A wedge block two (353) is mounted on the other side of the baffle (351). The wedge block one (345) is located on the top of the wedge block two (353). Connecting plates (354) are mounted on both of the baffles (351). A first sliding rod (355) is slidably connected to the two connecting plates (354). A connecting frame (357) is arranged on the outside of the first sliding rod (355). The first sliding rod (355) is mounted on the inner wall of the connecting frame (357). The connecting frame (357) is mounted on the support base (333). The connecting frame (357) is elastically connected to the connecting plate (354).

10. The aluminum alloy high-temperature tensile testing device according to claim 5, characterized in that, The air supply assembly (36) includes a riser pipe (361), a connecting pipe (362) and an air supply duct (364). The riser pipe (361) is installed on one side of the inner bottom wall of the lower mounting base (31). The connecting pipe (362) is installed at the bottom on one side of the riser pipe (361). The air supply duct (364) is installed at the bottom on the other side of the riser pipe (361). A plurality of air blowing openings (363) are formed on one side of the riser pipe (361).

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