A low temperature device suitable for biaxial mechanical equipment

Abstract

The utility model relates to the technical field of mechanical testing, and discloses a cryogenic device suitable for biaxial mechanical equipment, including a cryogenic test box, wherein hydraulic cylinders are installed on all four sides of the exterior of the cryogenic test box, a plurality of driving ends of the hydraulic cylinders are fixedly connected to push rods, a plurality of adjacent sides of the push rods are fixedly connected to fixed frames, a plurality of the interiors of the fixed frames are rotatably connected to threaded rods, a plurality of the exteriors of the threaded rods are threadedly connected to arc blocks 1, a plurality of the interiors of the fixed frames are fixedly connected to arc blocks 2, and a plurality of the arc blocks 1 and a plurality of the exteriors of the arc blocks 2 are fixedly connected to two fixed plates 1. In the utility model, the arc block 1 can be displaced by rotating the threaded rod, the test piece can be clamped and fixed, and liquid nitrogen refrigeration can be used to simulate complex and extreme environments such as space, and biaxial testing can be achieved, thereby greatly improving the test accuracy and test range.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical testing, in particular to a low-temperature device suitable for biaxial mechanical equipment. Background Art

[0002] Mechanical test pieces are standard samples used to evaluate the mechanical properties of materials under external forces. These test pieces are subjected to different types of mechanical tests such as tension, compression, and bending through specific test devices to measure the stress and strain response of the material. Stress refers to the magnitude of the force inside the material, while strain refers to the deformation of the material under the action of external forces. The low-temperature device of the biaxial mechanical equipment is a device used to test the mechanical properties of materials in a low-temperature environment, and the purpose of testing mechanical test pieces is to evaluate the performance and reliability of materials under different environmental conditions.

[0003] However, existing mechanical testing equipment usually adopts uniaxial testing when testing mechanical test pieces. However, the accuracy of such testing is biased and it is unable to simulate extreme low temperature environments such as outer space, resulting in inaccurate test results of the mechanical test pieces. Therefore, in view of the above shortcomings, a low-temperature device suitable for biaxial mechanical equipment is proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a low-temperature device suitable for biaxial mechanical equipment, aiming to improve the problems in the prior art that the test piece cannot be stably clamped and fixed while realizing biaxial testing and cannot simulate extreme environments.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A low-temperature device suitable for biaxial mechanical equipment comprises a low-temperature test box, wherein hydraulic cylinders are installed on all sides of the outside of the low-temperature test box, a plurality of driving ends of the hydraulic cylinders are fixedly connected to push rods, a plurality of adjacent sides of the push rods are fixedly connected to fixed frames, a plurality of the fixed frames are rotatably connected to threaded rods inside, a plurality of the threaded rods are threadedly connected to arc blocks 1 outside, a plurality of the fixed frames are fixedly connected to arc blocks 2 inside, a plurality of the arc blocks 1 and a plurality of the arc blocks 2 are fixedly connected to two fixed plates 1 outside, a plurality of the fixed frames are fixedly connected to two fixed rods inside, a plurality of the fixed rods are sleeved with springs 1 outside, a plurality of the fixed frames are fixedly connected to rotating plates on the front side, a cooling assembly is provided on the left side of the top of the low-temperature test box, and a sealing assembly is provided on the front side of the low-temperature test box.

[0007] Furthermore, the cooling assembly includes a liquid storage tank, the bottom of which is fixedly connected to the top of the low-temperature test box, a water pump is installed inside the liquid storage tank, the output end of the water pump is fixedly connected to an output pipe, the bottom of the output pipe is fixedly connected to a plurality of nozzles, a suction pump is fixedly connected to the right side of the top of the low-temperature test box, the input end of the suction pump is fixedly connected to the suction pipe, the output end of the suction pump is fixedly connected to a reflux pipe, and a cooler is fixedly connected to the external top side of the low-temperature test box.

[0008] Further, the sealing assembly includes two rotating frames, the bottoms of the two rotating frames are fixedly connected to the top front side of the low-temperature test box, the interiors of the two rotating frames are fixedly connected with fixed shafts, the front sides of the fixed shafts are rotatably connected with a rotating door, the front sides of the rotating door are fixedly connected with a handle, the interior of the rotating door is fixedly connected with a double-layer quartz glass transparent window, the interior front side of the low-temperature test box is fixedly connected with a second fixed plate, the front side of the second fixed plate is fixedly connected with a plurality of sleeves, the interiors of the plurality of sleeves are all slidably connected with sliding columns, the interiors of the plurality of sleeves are all slidably connected with limiting disks, the interiors of the plurality of sleeves are all provided with second springs, the rear side of the rotating door is fixedly connected with a sealing ring, and the rear side of the sealing ring is fixedly connected with an extrusion plate.

[0009] Furthermore, a heat-insulating layer is fixedly connected to the interior of the low-temperature test box, a vacuum layer is arranged inside the low-temperature test box, a foam plastic layer is fixedly connected to the interior of the low-temperature test box, a temperature sensor is fixedly connected to the external top side of the low-temperature test box, and columns are fixedly connected to the four corners of the bottom of the low-temperature test box.

[0010] Furthermore, the outside of the arc-shaped block 1 is slidably connected to the inside of the fixed frame, and the outside of the threaded rod is rotationally connected to the inside of the arc-shaped block 2.

[0011] Furthermore, the top of the output pipe is fixedly connected to the interior of the low-temperature test box, and the outside of the suction pipe is fixedly connected to the interior of the low-temperature test box.

[0012] Furthermore, one end of the second spring is fixedly connected to the inside of the sleeve, and the other end of the second spring is fixedly connected to the rear side of the limiting plate.

[0013] Furthermore, the front side of the sliding column is in contact with the rear side of the extrusion plate, and the rear side of the sliding column is fixedly connected to the front side of the limiting plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the arc block 1 can be displaced by rotating the threaded rod, so that the test piece can be clamped and fixed by the arc block 1 and the fixing plate 1, and a low-temperature environment can be created for the test piece by liquid nitrogen to simulate complex extreme environments such as space, and dual-axis testing can be achieved, thereby greatly improving the test accuracy and test range.

[0016] 2. In the utility model, the vaporized liquid nitrogen can be collected and recycled by the suction pump and the suction pipe. At the same time, the sealing performance can be improved by the sealing ring and the spring, and the heat loss and conduction can be minimized by the insulation layer and the vacuum layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a low-temperature device suitable for biaxial mechanical equipment proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of a low-temperature test box for a low-temperature device of a biaxial mechanical equipment proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of a fixed frame of a low-temperature device suitable for biaxial mechanical equipment proposed by the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of a liquid storage tank of a low-temperature device suitable for biaxial mechanical equipment proposed by the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of a fixing plate 2 of a low temperature device suitable for a biaxial mechanical device proposed by the utility model;

[0022] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0023] Figure 7 This is a schematic diagram of the heat insulation layer structure of a low-temperature device suitable for biaxial mechanical equipment proposed by the utility model.

[0024] Legend:

[0025] 1. Low temperature test box; 2. Hydraulic cylinder; 3. Push rod; 4. Fixed frame; 5. Threaded rod; 6. Arc block 1; 7. Arc block 2; 8. Fixed plate 1; 9. Fixed rod; 10. Spring 1; 11. Rotating plate; 12. Liquid storage tank; 13. Water pump; 14. Output pipe; 15. Nozzle; 16. Suction pump; 17. Suction pipe; 18. Cooler; 19. Reflux pipe; 20. Rotating frame; 21. Fixed shaft; 22. Rotating door; 23. Handle; 24. Double-layer quartz glass transparent window; 25. Fixed plate 2; 26. Sleeve; 27. Sliding column; 28. Limiting plate; 29. ​​Spring 2; 30. Sealing ring; 31. Extrusion plate; 32. Insulation layer; 33. Vacuum layer; 34. Foam plastic layer; 35. Temperature sensor; 36. Column. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1 - Figure 3 , the utility model provides an embodiment: a low-temperature device suitable for biaxial mechanical equipment, including a low-temperature test box 1, the low-temperature test box 1 is used to place samples to be tested, hydraulic cylinders 2 are installed around the outside of the low-temperature test box 1, the hydraulic cylinders 2 are used to provide power, the driving ends of the multiple hydraulic cylinders 2 are fixedly connected with push rods 3, the adjacent sides of the multiple push rods 3 are fixedly connected with fixed frames 4, the push rods 3 connect the hydraulic cylinders 2 and the fixed frames 4, and convert the driving force of the hydraulic cylinders 2 into mechanical motion, the interiors of the multiple fixed frames 4 are rotatably connected with threaded rods 5, the exteriors of the multiple threaded rods 5 are threadedly connected with arc blocks 1 6, the exteriors of the arc blocks 1 6 are slidably connected to the interior of the fixed frames 4, the threaded rods 5 rotate inside the fixed frames 4, and cooperate with the arc blocks 1 6 to realize the transmission of mechanical motion, and the interiors of the multiple fixed frames 4 are fixedly connected with arc blocks 2 7;

[0028] Reference Figure 1 - Figure 3The outside of the threaded rod 5 is rotatably connected to the inside of the arc block 2 7. The outsides of the multiple arc blocks 6 and the multiple arc blocks 2 7 are fixedly connected to two fixed plates 8. The fixed plate 1 is connected to the arc block for transmitting force and movement. The insides of the multiple fixed frames 4 are fixedly connected to two fixed rods 9. The outsides of the multiple fixed rods 9 are sleeved with springs 10. The design here uses the compression and rebound of the spring 10 to adapt to the displacement of 8 and provide a more stable clamping. The front sides of the multiple fixed frames 4 are fixedly connected to the rotating plate 11. The rotating plate 11 is designed here to be used for the threaded rod 5 provides power. A cooling assembly is provided on the left side of the top of the low-temperature test box 1. The cooling assembly includes a liquid storage tank 12. The bottom of the liquid storage tank 12 is fixedly connected to the top of the low-temperature test box 1. The liquid storage tank 12 stores cooling liquid nitrogen. A water pump 13 is installed inside the liquid storage tank 12. The output end of the water pump 13 is fixedly connected to an output pipe 14. The top of the output pipe 14 is fixedly connected to the inside of the low-temperature test box 1. The bottom of the output pipe 14 is fixedly connected to a plurality of nozzles 15. The water pump 13 is responsible for pumping the coolant to the output pipe 14 and the nozzle 15, and spraying it evenly on the outside of the test piece.

[0029] Reference Figure 2 - Figure 4 A suction pump 16 is fixedly connected to the right side of the top of the low-temperature test box 1, and a suction pipe 17 is fixedly connected to the input end of the suction pump 16. The suction pump 16 recovers the evaporated liquid nitrogen through the suction pipe 17. The outside of the suction pipe 17 is fixedly connected to the inside of the low-temperature test box 1, and the output end of the suction pump 16 is fixedly connected to a reflux pipe 19. A cooler 18 is fixedly connected to the top side of the outside of the low-temperature test box 1. The cooler 18 is designed here to liquefy nitrogen for recycling;

[0030] Reference Figure 1 and Figure 2 A sealing assembly is provided at the front side of the low-temperature test box 1. The sealing assembly includes two rotating frames 20. The bottoms of the two rotating frames 20 are fixedly connected to the top front side of the low-temperature test box 1. A fixed shaft 21 is fixedly connected inside the two rotating frames 20. A rotating door 22 is rotatably connected to the front side of the fixed shaft 21. The rotating frames 20 and the fixed shaft 21 constitute a door switch mechanism, allowing an operator to easily open and close the rotating door 22. A handle 23 is fixedly connected to the front side of the rotating door 22. The handle 23 facilitates opening the rotating door 22. A double-layer quartz glass transparent window 24 is fixedly connected inside the rotating door 22. The double-layer quartz glass transparent window 24 can realize the passage of the light path and the collection of strain;

[0031] Reference Figure 2 , Figure 5 and Figure 6, a fixing plate 25 is fixedly connected to the front side of the low-temperature test box 1, and a plurality of sleeves 26 are fixedly connected to the front side of the fixing plate 25. The interiors of the plurality of sleeves 26 are all slidably connected with sliding columns 27. The sleeve 26 is designed here to provide a sliding path for the sliding column 27. The interiors of the plurality of sleeves 26 are all slidably connected with a limiting plate 28. The limiting plate 28 is designed here to prevent the sliding column 27 from slipping off the outside of the sleeve 26. A spring 29 is arranged inside the plurality of sleeves 26. One end of the spring 29 is fixedly connected to the interior of the sleeve 26, and the other end of the spring 29 is fixedly connected to the rear side of the limiting plate 28. The design here can more effectively improve the sealing effect by means of the elastic force of the spring 29. The rear side of the sliding column 27 is fixedly connected to the front side of the limiting plate 28. A sealing ring 30 is fixedly connected to the rear side of the rotating door 22. An extrusion plate 31 is fixedly connected to the rear side of the sealing ring 30. The front side of the sliding column 27 contacts the rear side of the extrusion plate 31. The sealing ring 30 can effectively prevent cold air leakage;

[0032] Reference Figure 1 and Figure 7 An insulation layer 32 is fixedly connected to the interior of the low-temperature test box 1, a vacuum layer 33 is arranged inside the low-temperature test box 1, and a foam plastic layer 34 is fixedly connected to the interior of the low-temperature test box 1. The insulation layer 32, the vacuum layer 33 and the foam plastic layer 34 work together to maintain the low-temperature environment in the low-temperature test box 1 and reduce heat transfer. A temperature sensor 35 is fixedly connected to the top side of the outside of the low-temperature test box 1. The temperature sensor 35 monitors the temperature changes in the test box to ensure the accuracy of the experimental conditions. The four corners of the bottom of the low-temperature test box 1 are fixedly connected with columns 36. The columns 36 support the low-temperature test box 1 to ensure the stability of the overall structure.

[0033] Working principle: When the mechanical test piece needs to be tested, first pull the handle 23 to open the rotating door 22, and then start the hydraulic cylinder 2, and drive the push rod 3 to move through the hydraulic cylinder 2, and then adjust the position from four directions, and then place the mechanical test piece inside the fixed frame 4, and then rotate the rotating plate 11, and use the rotating plate 11 to displace the arc block 16, and with the displacement of the arc block 16, the fixed plate 18 will be displaced, and then the arc block 16 and the arc block 27 will be close to each other, so as to stably clamp and fix the test piece, and then close the rotating door 22, and with the closing of the rotating door 22, the extrusion plate 31 will contact the sliding column 27, and then the sliding column 27 will be squeezed and displaced, and then the limit plate 28 will squeeze the spring 29, so that the spring 29 can be compressed and rebounded. When the pressure is applied to the extrusion plate 31, the sealing ring 30 is deformed by extrusion, thereby improving the sealing effect. The heat insulation layer 32, the vacuum layer 33 and the foam plastic layer 34 can effectively isolate the heat, thereby preventing the heat loss to the greatest extent. Then the suction pump 16 can be started to suck out the air inside the low-temperature test box 1, so that a vacuum environment is formed inside the low-temperature test box 1. Then the liquid nitrogen inside the liquid storage tank 12 can be sprayed out through the output pipe 14 and the nozzle 15 by the water pump 13, so that the mechanical test piece can be cooled to form an ultra-low temperature environment. Then the nitrogen can be sucked again by the suction pump 16, and liquefied into liquid nitrogen again by the cooler 18, and transported to the inside of the liquid storage tank 12 for recycling. Then the hydraulic cylinder 2 can be started to stretch or compress the mechanical test piece, so that the mechanical test piece can be tested.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low temperature device suitable for biaxial mechanical equipment, comprising a low temperature test box (1), characterized in that: Hydraulic cylinders (2) are installed around the outside of the low-temperature test box (1), and the driving ends of the plurality of hydraulic cylinders (2) are fixedly connected to push rods (3), and the adjacent sides of the plurality of push rods (3) are fixedly connected to fixed frames (4). The interiors of the plurality of fixed frames (4) are rotatably connected to threaded rods (5), and the exteriors of the plurality of threaded rods (5) are threadedly connected to arc blocks 1 (6). The interiors of the plurality of fixed frames (4) are fixedly connected to arc blocks 2 (7), and the exteriors of the plurality of arc blocks 1 (6) and the plurality of arc blocks 2 (7) are fixedly connected to two fixed plates 1 (8). The interiors of the plurality of fixed frames (4) are fixedly connected to two fixed rods (9), and the exteriors of the plurality of fixed rods (9) are sleeved with springs 1 (10). The front sides of the plurality of fixed frames (4) are fixedly connected to rotating plates (11). A cooling assembly is provided on the left side of the top of the low-temperature test box (1), and a sealing assembly is provided on the front side of the low-temperature test box (1).

2. A cryogenic device suitable for biaxial mechanical equipment according to claim 1, characterized in that: The cooling assembly comprises a liquid storage tank (12), the bottom of the liquid storage tank (12) is fixedly connected to the top of the low-temperature test box (1), a water pump (13) is installed inside the liquid storage tank (12), the output end of the water pump (13) is fixedly connected to an output pipe (14), the bottom of the output pipe (14) is fixedly connected to a plurality of nozzles (15), a suction pump (16) is fixedly connected to the right side of the top of the low-temperature test box (1), the input end of the suction pump (16) is fixedly connected to a suction pipe (17), the output end of the suction pump (16) is fixedly connected to a return pipe (19), and a cooler (18) is fixedly connected to the external top side of the low-temperature test box (1).

3. A cryogenic device suitable for biaxial mechanical equipment according to claim 1, characterized in that: The sealing assembly comprises two rotating frames (20), the bottoms of the two rotating frames (20) are fixedly connected to the top front side of the low-temperature test box (1), the interiors of the two rotating frames (20) are fixedly connected to fixed shafts (21), the front sides of the fixed shafts (21) are rotatably connected to a rotating door (22), the front sides of the rotating door (22) are fixedly connected to a handle (23), the interiors of the rotating door (22) are fixedly connected to a double-layer quartz glass transparent window (24), and the interior of the low-temperature test box (1) is fixedly connected to the rotating door (22). A second fixing plate (25) is fixedly connected to the front side of the second fixing plate (25), a plurality of sleeves (26) are fixedly connected to the front side of the second fixing plate (25), a plurality of the sleeves (26) are slidably connected to the inside of each of the plurality of sleeves (26), a limiting disk (28) is slidably connected to the inside of each of the plurality of sleeves (26), a second spring (29) is arranged inside each of the plurality of sleeves (26), a sealing ring (30) is fixedly connected to the rear side of the rotating door (22), and a pressing plate (31) is fixedly connected to the rear side of the sealing ring (30).

4. A cryogenic device suitable for biaxial mechanical equipment according to claim 1, characterized in that: The low-temperature test box (1) has a heat insulation layer (32) fixedly connected to the interior, a vacuum layer (33) arranged inside the low-temperature test box (1), a foam plastic layer (34) fixedly connected to the interior of the low-temperature test box (1), a temperature sensor (35) fixedly connected to the top side of the exterior of the low-temperature test box (1), and columns (36) fixedly connected to the four corners of the bottom of the low-temperature test box (1).

5. A cryogenic device suitable for biaxial mechanical equipment according to claim 1, characterized in that: The outside of the arc block 1 (6) is slidably connected to the inside of the fixed frame (4), and the outside of the threaded rod (5) is rotationally connected to the inside of the arc block 2 (7).

6. A cryogenic device suitable for biaxial mechanical equipment according to claim 2, characterized in that: The top of the output pipe (14) is fixedly connected to the interior of the low-temperature test box (1), and the outside of the suction pipe (17) is fixedly connected to the interior of the low-temperature test box (1).

7. A cryogenic device suitable for biaxial mechanical equipment according to claim 3, characterized in that: One end of the second spring (29) is fixedly connected to the inside of the sleeve (26), and the other end of the second spring (29) is fixedly connected to the rear side of the limiting plate (28).

8. A cryogenic device suitable for biaxial mechanical equipment according to claim 3, characterized in that: The front side of the sliding column (27) contacts the rear side of the extrusion plate (31), and the rear side of the sliding column (27) is fixedly connected to the front side of the limiting plate (28).

Images