An engine thermal shock test device and method

Abstract

The present invention discloses an engine thermal shock test device and method, which relates to the technical field of thermal shock. It includes a base, on the top of which a housing is fixedly installed. A detection device is arranged on the surface of the housing. A partition plate is fixedly installed on the inner wall of the housing. A servo motor is fixedly installed on the top of the inner wall of the housing. A rotating disk is rotatably installed on the surface of the partition plate. One end of a rotating column is fixedly installed on the top of the rotating disk, and the other end of the rotating column is fixedly installed at the bottom of the output end of the servo motor. A heating machine is fixedly installed on the top of the rotating disk, a refrigerating machine is fixedly installed on the top of the rotating disk, and an arc plate is fixedly installed on the bottom of the rotating disk. By rotation, the heating machine is driven to rotate to the test port. By changing the testing machine, it is not necessary to quickly adjust the temperature through one testing machine to test the engine, thus shortening the blank period during testing.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal shock, and specifically relates to an engine thermal shock test device and method. Background Art

[0002] An engine thermal shock test device is used to simulate the working environment of an engine under extreme temperature changes to test its performance and durability under rapid temperature changes (hot and cold alternation).

[0003] The patent with the patent announcement number CN220872082U relates to an engine thermal shock test device, including an engine and a water storage device. When the engine stops running and cools down, the cooling water in the water storage cavity flows into the engine's cooling channel through the first water inlet and the second water outlet. The cooling water exchanges heat with the engine, and the cooled water after heat exchange flows back into the water storage cavity through the first water outlet and the second water inlet. The cooling water in the water storage cavity then flows into the engine's cooling channel again through the first water inlet and the second water outlet. By circulating and cooling for the shutdown cooling condition time according to the above method, the engine can be quickly cooled to normal temperature. Due to the large temperature drop, the engine thermal shock test process can achieve the cooling-to-alternation time efficiency, which is beneficial to accurately evaluating the performance and reliability of the engine at different temperatures.

[0004] In the above patent, by circulating and cooling for the shutdown cooling condition time, the engine can be quickly cooled to normal temperature. Due to the large temperature drop, the engine thermal shock test process can achieve the cooling-to-alternation time efficiency, which is beneficial to accurately evaluating the performance and reliability of the engine at different temperatures. However, during the thermal shock experiment, when the hot and cold machine exchanges, rotating the hot and cold machine will cause the overall device to vibrate, affecting the measurement results. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an engine thermal shock test device and method, which solves the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: An engine thermal shock test device includes a base, a housing is fixedly installed on the top of the base, a detection device is arranged on the surface of the housing, and a rotating device, a lifting device and a defogging device are arranged inside the housing;

[0007] Among them, the rotating device includes: a partition board, a servo motor, a rotating disk, a rotating column, a heating machine, a refrigerating machine, an arc plate, a through rod, a roller and a cross bar. The partition board is fixedly installed on the inner wall of the housing. The servo motor is fixedly installed on the top of the inner wall of the housing. The rotating disk is rotatably installed on the surface of the partition board. One end of the rotating column is fixedly installed on the top of the rotating disk, and the other end of the rotating column is fixedly installed at the bottom of the output end of the servo motor. The heating machine is fixedly installed on the top of the rotating disk, and the refrigerating machine is fixedly installed on the top of the rotating disk. The arc plate is fixedly installed on the bottom of the rotating disk. The through rod slidably penetrates the inner and outer walls of the partition board. The roller is rotatably installed on the top of the through rod. The cross bar fixedly penetrates the inner and outer walls of the through rod. When the roller moves downward, it will contact the rotating disk. After the roller contacts the rotating disk, it drives the roller to rotate. When the roller rotates, it fits tightly with the rotating disk.

[0008] According to the above technical solution, a first spring is arranged between the through rod and the partition board. The roller contacts the rotating disk, and the through rod is driven to reset by the first spring.

[0009] According to the above technical solution, the lifting device includes: an air outlet groove, a fixing plate, a driving device, a first guide plate and a second guide plate. The air outlet groove is opened on the surface of the partition board. The fixing plate is fixedly installed on the inner wall of the air outlet groove. The driving device is arranged on the inner wall of the air outlet groove. One end of the first guide plate is fixedly installed on the side where the fixing plates are close to each other. The other end of the first guide plate is rotatably installed on the surface of the driving device. One end of the second guide plate is fixedly installed on the side where the fixing plates are close to each other. The other end of the second guide plate is rotatably installed on the surface of the driving device. When the first guide plate and the second guide plate rotate, the air blown out by the heating machine or the refrigerating machine is diffused to a wider area through rotation.

[0010] According to the above technical solution, the lifting device further includes: an L-shaped rod, a fixed seat, a rotating rod, a square block, a sliding plate, a triangular block and an arc-shaped block. The L-shaped rod is fixedly installed on the circumferential surface of the arc plate. The fixed seat is fixedly installed on the surface of the second guide plate. The rotating rod is rotatably installed on the side of the fixed seat away from the second guide plate. The square block is fixedly installed on the surface of the rotating rod. The sliding plate is slidably installed on the side of the fixed seat away from the square block. The triangular block is fixedly installed on the surface of the sliding plate. The arc-shaped block is fixedly installed on the bottom of the partition board. When the triangular block moves, it drives the sliding plate to move. After the sliding plate moves, it no longer contacts the rotating rod, so that the rotating rod can rotate. After the rotating rod rotates, the L-shaped rod no longer contacts the rotating rod.

[0011] According to the above technical solution, a second spring is arranged between the sliding plate and the fixed seat. The triangular block contacts the arc-shaped block, and the sliding plate is driven to reset by the second spring.

[0012] According to the above technical solution, the demisting device includes: a recovery frame, a sliding groove, two sliders, a scraping plate, a blocking block, a transmission arc block, a recovery box, a telescopic rod, and an air outlet plate. The recovery frame is fixedly installed on one side of the partition plate close to the second guide plate. The sliding groove is opened on the inner wall of the recovery frame. The slider is slidably installed on the inner wall of the sliding groove. The scraping plate is rotatably installed between the two sliders. The blocking block is fixedly installed on the inner wall of the recovery frame. The transmission arc block is fixedly installed on the top of the fixed seat. The recovery box is fixedly installed on the surface of the recovery frame. The telescopic rod is fixedly installed at the bottom of the partition plate. The air outlet plate is fixedly installed at the bottom of the telescopic rod. The blocking block drives the scraping plate to rotate downward. After the scraping plate rotates, the moisture on the surface of the scraping plate flows downward into the interior of the recovery frame and then into the interior of the recovery box.

[0013] According to the above technical solution, a torsion spring is arranged between the slider and the scraping plate. The blocking block contacts the transmission arc block, and the torsion spring drives the scraping plate to reset.

[0014] According to the above technical solution, the transmission arc block contacts the scraping plate. A third spring is arranged between the slider and the recovery frame, and the third spring drives the slider to reset.

[0015] The present invention provides an engine cold and hot shock test device and method. It has the following beneficial effects:

[0016] (1) In this invention, the rotation of the rotating disk drives the refrigerating machine to rotate, and the rotation drives the heating machine to rotate to the test port. By changing the test machine, it is no longer necessary to quickly adjust the temperature through one test machine to test the engine, shortening the blank period during testing and improving the measurement accuracy. When the roller rotates, it closely fits with the rotating disk, reducing the amplitude of vibration when the rotating disk rotates, preventing the heating machine or the refrigerating machine from still continuously outputting and generating vibration during conversion, which may cause the housing to vibrate, reducing the overall wear of the device and increasing the service life of the device.

[0017] (2) In this invention, the rotation of the first guide plate and the second guide plate diffuses the air blown out by the heating machine or the refrigerating machine to a wider area through rotation, increasing the speed of temperature reduction or increase when the engine undergoes cold and hot conversion and improving the measurement accuracy. When the fixed seat moves, it drives the second guide plate to stop moving, so that the first guide plate and the second guide plate do not rotate when the heating machine and the refrigerating machine are converted, causing the first guide plate and the second guide plate to temporarily stop rotating during cold and hot conversion, resulting in a temporary pause of the device, preventing the device from being damaged due to material fatigue caused by long-term continuous operation, reducing the risk of device damage, and improving the protection effect on the device. After the sliding plate moves and no longer contacts the rotating rod, the rotating rod can rotate. After the rotating rod rotates, the L-shaped rod no longer contacts the rotating rod. Subsequently, after the fixed seat resets, it can work again during the next cold and hot exchange, improving the practicality of the device.

[0018] (3) In this invention, when the scraping plate moves, it will contact the second guide plate and scrape the surface of the second guide plate, preventing fog from forming on the surface of the second guide plate during heat and cold exchange, which may cause water condensation columns to form and drop during heating or cooling, reducing the error during detection. After the scraping plate rotates, the water on the surface of the scraping plate flows to the bottom and then into the inside of the recovery box and further into the inside of the recovery container, enabling the cleaning and recovery of water vapor, and improving the cleanliness inside the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the cross-sectional structure of the outer shell of the present invention;

[0021] Figure 3 is a schematic diagram of the structure of the rotating device of the present invention;

[0022] Figure 4 is a schematic diagram of the structure of the bottom of the partition plate of the present invention;

[0023] Figure 5 is a schematic diagram of the positional relationship of the through rod of the present invention;

[0024] Figure 6 is a schematic diagram of the positional relationship of the partition plate of the present invention;

[0025] Figure 7 is of the present invention Figure 6 enlarged schematic diagram of the structure of part A;

[0026] Figure 8 is a schematic diagram of the structure of the lifting device of the present invention;

[0027] Figure 9 is a schematic diagram of the structure of the de-fogging device of the present invention;

[0028] Figure 10 is of the present invention Figure 9 enlarged schematic diagram of the structure of part B.

[0029] In the figure: 1, base; 2, outer shell; 3, detection device; 41, partition board; 42, servo motor; 43, rotating disk; 44, rotating column; 45, heating machine; 46, refrigerating machine; 47, arc plate; 48, through rod; 49, roller; 410, cross bar; 411, first spring; 51, air outlet groove; 52, fixing plate; 53, driving device; 54, first flow guiding plate; 55, second flow guiding plate; 56, L-shaped rod; 57, fixing seat; 58, rotating rod; 59, square block; 510, sliding plate; 511, triangular block; 512, arc surface block; 61, recycling box; 62, sliding groove; 63, slider; 64, scraping plate; 65, blocking block; 66, driving arc block; 67, recycling box; 68, telescopic rod; 69, air outlet plate. Detailed implementation manner

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1 - 10 , an embodiment of the present invention is: an engine thermal shock test equipment and method, including a base 1, the top of the base 1 is fixedly installed with an outer shell 2, the surface of the outer shell 2 is provided with a detection device 3, and a rotating device is arranged inside the outer shell 2. The rotating device includes: a partition board 41, a servo motor 42, a rotating disk 43, a rotating column 44, a heating machine 45, a refrigerating machine 46, an arc plate 47, a through rod 48, a roller 49 and a cross bar 410. The partition board 41 is fixedly installed on the inner wall of the outer shell 2, the servo motor 42 is fixedly installed on the top of the inner wall of the outer shell 2, the rotating disk 43 is rotatably installed on the surface of the partition board 41, one end of the rotating column 44 is fixedly installed on the top of the rotating disk 43, and the other end of the rotating column 44 is fixedly installed on the bottom of the output end of the servo motor 42. The heating machine 45 is fixedly installed on the top of the rotating disk 43, the refrigerating machine 46 is fixedly installed on the top of the rotating disk 43. By changing the testing machine, it is no longer necessary to quickly adjust the temperature through one testing machine to test the engine, shortening the blank period during testing and improving the measurement accuracy. The arc plate 47 is fixedly installed on the bottom of the rotating disk 43, the through rod 48 slidably penetrates the inner and outer walls of the partition board 41, the roller 49 is rotatably installed on the top of the through rod 48, and the cross bar 410 fixedly penetrates the inner and outer walls of the through rod 48, reducing the amplitude of vibration when the rotating disk 43 rotates, preventing the heating machine 45 or the refrigerating machine 46 from still continuously outputting and generating vibration during conversion, which may cause the outer shell 2 to vibrate, reducing the wear of the overall device and improving the service life of the device.

[0032] A first spring 411 is arranged between the through rod 48 and the partition plate 41. The roller 49 contacts the rotating disk 43, and the through rod 48 is driven to reset by the first spring 411.

[0033] A method for using an engine thermal shock test device includes the following steps:

[0034] Step 1: Place the engine inside the outer shell 2, and then start the heating machine 45 or the cooling machine 46;

[0035] Step 2: After the heating machine 45 blows out hot air, the cooling machine 46 blows out cold air to conduct a thermal shock test on the engine;

[0036] Step 3: Measure and transmit the test data through the detection device 3 to complete the measurement of the engine thermal shock technology.

[0037] During the operation of this embodiment: Place the engine inside the outer shell 2, and then start the heating machine 45 or the cooling machine 46. After the heating machine 45 blows out hot air, the cooling machine 46 blows out cold air to conduct a thermal shock test on the engine, and measure and transmit the test data through the detection device 3 to complete the measurement of the engine thermal shock technology. Start the servo motor 42. The rotation of the output end of the servo motor 42 will drive the rotating column 44 to rotate. The rotation of the rotating column 44 will drive the rotating disk 43 to rotate. The rotation of the rotating disk 43 will drive the cooling machine 46 to rotate. The heating machine 45 is driven to rotate to the test port through rotation. By changing the test machine, it is no longer necessary to quickly adjust the temperature through one test machine to test the engine, shortening the blank period during the test and improving the measurement accuracy. The rotation of the rotating disk 43 will drive the arc plate 47 to rotate. The rotation of the arc plate 47 will move the cross bar 410 downward. The movement of the cross bar 410 will drive the through rod 48 downward. The downward movement of the through rod 48 will drive the roller 49 downward. The downward movement of the roller 49 will contact the rotating disk 43. After the roller 49 contacts the rotating disk 43, it will drive the roller 49 to rotate. When the roller 49 rotates, it closely fits with the rotating disk 43, reducing the amplitude of vibration when the rotating disk 43 rotates, preventing the heating machine 45 or the cooling machine 46 from still continuously outputting and generating vibration during the conversion, which may cause the outer shell 2 to vibrate, reducing the wear of the overall device and improving the service life of the device.

[0038] Please refer to Figures 1 - 10, on the basis of the above embodiments, in another embodiment of the present invention, a lifting device and a defogging device are provided inside the housing 2. Among them, the lifting device includes: an air outlet groove 51, a fixing plate 52, a driving device 53, a first guide plate 54 and a second guide plate 55. The air outlet groove 51 is opened on the surface of the partition plate 41. The fixing plate 52 is fixedly installed on the inner wall of the air outlet groove 51. The driving device 53 is arranged on the inner wall of the air outlet groove 51. One end of the first guide plate 54 is fixedly installed on the side where the fixing plates 52 are close to each other. The other end of the first guide plate 54 is rotatably installed on the surface of the driving device 53. One end of the second guide plate 55 is fixedly installed on the side where the fixing plates 52 are close to each other. The other end of the second guide plate 55 is rotatably installed on the surface of the driving device 53, so as to increase the speed of temperature reduction or increase during the cold and heat conversion of the engine, and improve the accuracy of measurement.

[0039] The lifting device further includes: an L-shaped rod 56, a fixed seat 57, a rotating rod 58, a square block 59, a sliding plate 510, a triangular block 511 and a cambered surface block 512. The L-shaped rod 56 is fixedly installed on the circumferential surface of the arc plate 47. The fixed seat 57 is fixedly installed on the surface of the second guide plate 55. The rotating rod 58 is rotatably installed on the side of the fixed seat 57 away from the second guide plate 55. The square block 59 is fixedly installed on the surface of the rotating rod 58. The sliding plate 510 is slidably installed on the side of the fixed seat 57 away from the square block 59. The triangular block 511 is fixedly installed on the surface of the sliding plate 510, so that the first guide plate 54 and the second guide plate 55 temporarily stop rotating during the cold and heat conversion, so that the device gets a temporary pause, preventing the device from being damaged due to material fatigue caused by continuous operation for a long time, reducing the damage risk of the device, and improving the protection effect on the device. The cambered surface block 512 is fixedly installed at the bottom of the partition plate 41. Subsequently, after the fixed seat 57 is reset, it can work again during the next cold and heat exchange, improving the practicability of the device.

[0040] A second spring is arranged between the sliding plate 510 and the fixed seat 57. The triangular block 511 contacts the cambered surface block 512, and the sliding plate 510 is driven to reset by the second spring.

[0041] The demisting device includes: a recovery frame 61, a sliding groove 62, two sliders 63, a scraper 64, a blocking block 65, a transmission arc block 66, a recovery box 67, a telescopic rod 68 and an air outlet plate 69. The recovery frame 61 is fixedly installed on one side of the partition plate 41 close to the second deflector 55. The sliding groove 62 is opened on the inner wall of the recovery frame 61. The slider 63 is slidably installed on the inner wall of the sliding groove 62. The scraper 64 is rotatably installed between the two sliders 63. The blocking block 65 is fixedly installed on the inner wall of the recovery frame 61 to prevent water mist from existing on the surface of the second deflector 55 during heat and cold exchange, so as to prevent water condensation columns from being generated and falling during heating or cooling, and reduce the error during detection. The transmission arc block 66 is fixedly installed on the top of the fixed seat 57. The recovery box 67 is fixedly installed on the surface of the recovery frame 61. The telescopic rod 68 is fixedly installed at the bottom of the partition plate 41. The air outlet plate 69 is fixedly installed at the bottom of the telescopic rod 68, so as to clean and recover the water vapor, and improve the cleanliness inside the device.

[0042] A torsion spring is arranged between the slider 63 and the scraper 64. The blocking block 65 is in contact with the transmission arc block 66, and the scraper 64 is driven to reset by the torsion spring.

[0043] The transmission arc block 66 is in contact with the scraper 64. A third spring is arranged between the slider 63 and the recovery frame 61, and the slider 63 is driven to reset by the third spring.

[0044] During the operation of this embodiment: Start the driving device 53. The movement of the driving device 53 drives the rotation of the first deflector 54 and the second deflector 55. The rotation of the first deflector 54 and the second deflector 55 will spread the wind blown out by the heater 45 or the cooler 46 to a wider area through rotation, enabling the engine to cool down or heat up faster during the hot and cold conversion, improving the accuracy of measurement. The rotation of the arc plate 47 will drive the rotation of the L-shaped rod 56. The rotation of the L-shaped rod 56 will contact the square block 59. The rotation of the L-shaped rod 56 will drive the movement of the square block 59. The movement of the square block 59 drives the rotating rod 58 to move towards the arc-shaped block 512. The movement of the rotating rod 58 will contact the sliding plate 510. The rotating rod 58 is blocked by the sliding plate 510, preventing the rotating rod 58 from rotating towards the arc-shaped block 512. The rotation of the rotating rod 58 drives the fixed seat 57 to move towards the sliding plate 510. The movement of the fixed seat 57 drives the second deflector 55 to stop moving, causing the first deflector 54 and the second deflector 55 not to rotate during the conversion between the heater 45 and the cooler 46, temporarily stopping the rotation of the first deflector 54 and the second deflector 55 during the hot and cold conversion, resulting in a temporary pause of the device, preventing the device from being damaged due to material fatigue caused by continuous operation for a long time, reducing the risk of device damage, and improving the protection effect on the device. The movement of the sliding plate 510 drives the movement of the triangular block 511. The movement of the triangular block 511 will contact the arc-shaped block 512. The arc-shaped block 512 will block the triangular block 511, causing the triangular block 511 to move away from the rotating rod 58. The movement of the triangular block 511 drives the movement of the sliding plate 510. After the sliding plate 510 moves, it no longer contacts the rotating rod 58, enabling the rotating rod 58 to rotate. After the rotating rod 58 rotates, the L-shaped rod 56 no longer contacts the rotating rod 58. Subsequently, after the fixed seat 57 resets, it can work again during the next hot and cold exchange, improving the practicality of the device.

[0045] The movement of the fixed seat 57 drives the movement of the transmission arc block 66. The movement of the transmission arc block 66 will contact the scraper 64. The movement of the transmission arc block 66 drives the scraper 64 to move upwards. The movement of the scraper 64 will contact the second deflector 55 and scrape the surface of the second deflector 55, preventing fog from forming on the surface of the second deflector 55 during the hot and cold exchange, which may cause water condensation columns to form and fall during heating or cooling, reducing the error during detection. The upward movement of the scraper 64 will contact the blocking block 65. The blocking block 65 drives the scraper 64 to rotate downwards. After the scraper 64 rotates, the water on the surface of the scraper 64 flows downwards into the interior of the recovery frame 61 and then into the interior of the recovery box 67, enabling the cleaning and recovery of water vapor, and improving the cleanliness inside the device.

[0046] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An engine thermal shock test device, comprising a base (1), characterized in that: A housing (2) is fixedly mounted on the top of the base (1); a detection device (3) is provided on the surface of the housing (2); and a rotating device, a lifting device and a demisting device are provided inside the housing (2); The rotating device comprises: a partition plate (41), a servo motor (42), a rotating disk (43), a rotating column (44), a heating machine (45), a refrigerator (46), an arc plate (47), a through rod (48), a roller (49) and a cross bar (410), wherein the partition plate (41) is fixedly mounted on the inner wall of the housing (2), the servo motor (42) is fixedly mounted on the top of the inner wall of the housing (2), the rotating disk (43) is rotatably mounted on the surface of the partition plate (41), and one end of the rotating column (44) is fixedly mounted on the rotating disk (43). The other end of the rotating column (44) is fixedly mounted on the bottom of the output end of the servo motor (42), the heating machine (45) is fixedly mounted on the top of the rotating disk (43), the cooling machine (46) is fixedly mounted on the top of the rotating disk (43), the arc plate (47) is fixedly mounted on the bottom of the rotating disk (43), the penetration rod (48) is slidably penetrated through the inner and outer walls of the partition plate (41), the roller (49) is rotatably mounted on the top of the penetration rod (48), and the cross rod (410) is fixedly penetrated through the inner and outer walls of the penetration rod (48).

2. The engine thermal shock test equipment according to claim 1, characterized in that: A first spring (411) is provided between the penetration rod (48) and the partition plate (41), and the roller (49) is in contact with the rotating disk (43).

3. The engine thermal shock test equipment according to claim 2, characterized in that: The lifting device comprises: an air outlet slot (51), a fixed plate (52), a driving device (53), a guide plate 1 (54) and a guide plate 2 (55); the air outlet slot (51) is opened on the surface of the partition plate (41); the fixed plate (52) is fixedly mounted on the inner wall of the air outlet slot (51); the driving device (53) is arranged on the inner wall of the air outlet slot (51); one end of the guide plate 1 (54) is fixedly mounted on a side of the fixed plate (52) close to each other; the other end of the guide plate 1 (54) is rotatably mounted on the surface of the driving device (53); one end of the guide plate 2 (55) is fixedly mounted on a side of the fixed plate (52) close to each other; the other end of the guide plate 2 (55) is rotatably mounted on the surface of the driving device (53).

4. The engine thermal shock test equipment according to claim 3, characterized in that: The lifting device further comprises: an L-shaped rod (56), a fixed seat (57), a rotating rod (58), a square block (59), a sliding plate (510), a triangular block (511) and an arc surface block (512), wherein the L-shaped rod (56) is fixedly mounted on the circumferential surface of the arc plate (47), the fixed seat (57) is fixedly mounted on the surface of the second guide plate (55), the rotating rod (58) is rotatably mounted on a side of the fixed seat (57) away from the second guide plate (55), the square block (59) is fixedly mounted on the surface of the rotating rod (58), the sliding plate (510) is slidably mounted on a side of the fixed seat (57) away from the square block (59), the triangular block (511) is fixedly mounted on the surface of the sliding plate (510), and the arc surface block (512) is fixedly mounted on the bottom of the partition plate (41).

5. The engine thermal shock test equipment according to claim 4, characterized in that: A No. 2 spring is provided between the sliding plate (510) and the fixing seat (57), and the triangular block (511) is in contact with the arc surface block (512).

6. The engine thermal shock test equipment according to claim 5, characterized in that: The demisting device comprises: a recovery frame (61), a sliding groove (62), two sliding blocks (63), a scraper (64), a blocking block (65), a transmission arc block (66), a recovery box (67), a telescopic rod (68) and an air outlet plate (69), wherein the recovery frame (61) is fixedly mounted on a side of the partition plate (41) close to the second guide plate (55), the sliding groove (62) is opened on the inner wall of the recovery frame (61), the sliding block (63) is slidably mounted on the inner wall of the sliding groove (62), the scraper (64) is rotatably mounted between the two sliding blocks (63), the blocking block (65) is fixedly mounted on the inner wall of the recovery frame (61), the transmission arc block (66) is fixedly mounted on the top of the fixing seat (57), the recovery box (67) is fixedly mounted on the surface of the recovery frame (61), the telescopic rod (68) is fixedly mounted on the bottom of the partition plate (41), and the air outlet plate (69) is fixedly mounted on the bottom of the telescopic rod (68).

7. The engine thermal shock test equipment according to claim 6, characterized in that: A torsion spring is provided between the sliding block (63) and the scraper (64), and the blocking block (65) is in contact with the transmission arc block (66).

8. The engine thermal shock test equipment according to claim 7, characterized in that: The transmission arc block (66) is in contact with the scraper (64), and a No. 3 spring is provided between the slider (63) and the recovery frame (61).

9. A method for using an engine thermal shock test device, using the engine thermal shock test device according to claim 8, characterized in that: The following steps are involved: Step 1: placing the engine inside the housing (2), and then starting the heating machine (45) or the cooling machine (46); Step 2: The heating machine (45) blows out hot air and then the cooling machine (46) blows out cold air, and the engine is subjected to a hot and cold shock test; Step 3: The test data is measured and transmitted through the detection device (3) to complete the measurement of the engine's thermal shock technology.

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