A liquid nitrogen transfer device

Abstract

The utility model discloses a kind of liquid nitrogen transfer devices, which belong to liquid nitrogen transfer technical field, and the liquid nitrogen transfer device includes support structure, bearing mechanism, uncovering mechanism and liquid adding mechanism, and the support structure is detachably arranged in liquid nitrogen tank;The bearing mechanism is arranged in support structure, and the bearing mechanism includes bearing plate and lifting assembly, and the bearing plate is used to carry transfer barrel, and the lifting assembly can drive bearing plate to lift;The uncovering mechanism is arranged in support structure, and the uncovering mechanism is used to open or close the barrel cover at the top of transfer barrel;The liquid adding mechanism is arranged in support structure, and the liquid adding mechanism includes liquid adding pipe and liquid adding drive assembly, and the liquid adding pipe is communicated with liquid nitrogen tank, and the liquid adding drive assembly can drive liquid adding pipe to move to the top of transfer barrel.By bearing mechanism, uncovering mechanism and liquid adding mechanism cooperation, realize that liquid nitrogen in liquid nitrogen tank is automatically transferred to transfer barrel, without manual operation, avoid frostbite.

Description

Technical Field

[0001] This utility model relates to the field of liquid nitrogen transfer technology, and in particular to a liquid nitrogen transfer device. Background Technology

[0002] Liquid nitrogen tanks are relatively large. If a small amount of liquid nitrogen is needed, some of the liquid nitrogen in the tank is usually transferred to a transfer container. When adding liquid nitrogen to the traditional transfer container, the container lid is opened manually, and the liquid addition hose is inserted into the container by hand. This operation carries the risk of frostbite. Utility Model Content

[0003] This invention provides a liquid nitrogen transfer device to solve the technical problem of the risk of frostbite when manually transferring liquid nitrogen from a liquid nitrogen tank to a transfer container in the prior art.

[0004] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0005] A liquid nitrogen transfer device, comprising:

[0006] The supporting structure is detachably mounted on the liquid nitrogen tank.

[0007] A support mechanism is provided on the support structure. The support mechanism includes a support plate and a lifting assembly. The support plate is used to support the transfer bucket, and the lifting assembly can drive the support plate to rise and fall.

[0008] A lid opening mechanism is provided on the support structure, and the lid opening mechanism is used to open or close the lid on the top of the transfer bucket;

[0009] A liquid filling mechanism is provided on the support structure. The liquid filling mechanism includes a liquid filling pipe and a liquid filling drive assembly. The liquid filling pipe is connected to the liquid nitrogen tank, and the liquid filling drive assembly can drive the liquid filling pipe to move to the top of the transfer tank.

[0010] Preferably, the liquid filling tube includes a first tube body and a second tube body. The first tube body is connected to the liquid filling drive assembly, one end of the second tube body is connected to one end of the first tube body, the other end of the second tube body is connected to the liquid nitrogen tank, and the other end of the first tube body is used to add liquid to the transfer container.

[0011] Preferably, the second tube is a flexible tube.

[0012] Preferably, the liquid adding mechanism further includes a second fixing plate, the first tube body is disposed on the second fixing plate, and the liquid adding drive assembly is connected to the second fixing plate.

[0013] Preferably, the outside of the liquid filling pipe is fitted with an insulation element; and / or, the end of the liquid filling pipe away from the liquid nitrogen tank extends vertically downward to form an extension, which can extend into the interior of the transfer tank.

[0014] Preferably, the supporting mechanism further includes a protective plate forming a protective cavity, the supporting plate being disposed within the protective cavity, and the lifting assembly being disposed at the bottom of the protective cavity.

[0015] Preferably, the liquid filling mechanism is disposed on one side of the protective plate, and the protective plate is provided with a clearance opening corresponding to the position of the liquid filling pipe, through which the liquid filling pipe can enter the protective cavity.

[0016] Preferably, the lid opening mechanism includes a gripper and a drive assembly, the drive assembly being able to drive the gripper to pick up and put down the lid and / or move the lid.

[0017] Preferably, the support structure includes a support plate that can be mounted on the liquid nitrogen tank, the opening mechanism is located above the support plate, the liquid filling mechanism and the bearing mechanism are both located below the support plate, and the support plate has an operating port corresponding to the position of the bearing mechanism.

[0018] Preferably, the system also includes a cover plate mechanism, which includes a cover plate body and a cover plate driving assembly. The cover plate driving assembly can drive the cover plate body to move between an open position and a closed position to open or close the operating port.

[0019] The beneficial effects of this utility model are:

[0020] The liquid nitrogen transfer device proposed in this invention, when it is necessary to transfer liquid nitrogen into a transfer container, places the transfer container on a support plate, the opening mechanism opens the top cover of the transfer container, and the liquid addition drive assembly drives the liquid addition pipe to move to the top of the transfer container. The position of the transfer container is adjusted by a lifting assembly to facilitate the addition of liquid nitrogen into the transfer container. After the liquid nitrogen is added, the liquid addition drive assembly drives the liquid addition pipe away from the transfer container, and the opening mechanism closes the top cover of the transfer container. Through the cooperation of the support mechanism, the opening mechanism, and the liquid addition mechanism, the liquid nitrogen in the liquid nitrogen tank is automatically transferred to the transfer container without manual operation, thus avoiding frostbite. The support structure is detachably installed on the liquid nitrogen tank, allowing it to be used with different liquid nitrogen tanks, thereby improving the versatility and compatibility of the device and reducing costs. Attached Figure Description

[0021] Figure 1 This is a first structural schematic diagram of the liquid nitrogen transfer device provided by this utility model;

[0022] Figure 2This is a schematic diagram of the second structure of the liquid nitrogen transfer device provided by this utility model;

[0023] Figure 3 This is a schematic diagram of the liquid addition mechanism provided by this utility model;

[0024] Figure 4 This is a partial structural schematic diagram of the liquid addition mechanism provided by this utility model;

[0025] Figure 5 This is a first schematic diagram of a partial structure of the liquid nitrogen transfer device provided by this utility model;

[0026] Figure 6 This is a first structural schematic diagram of the cover plate mechanism provided by this utility model;

[0027] Figure 7 This is a schematic diagram of the second structure of the cover plate mechanism provided by this utility model;

[0028] Figure 8 This is a partial structural schematic diagram of the cover plate mechanism provided by this utility model;

[0029] Figure 9 This is a schematic diagram of a guide track provided by this utility model;

[0030] Figure 10 This is a schematic diagram of another guide track provided by this utility model;

[0031] Figure 11 This is a second schematic diagram showing a partial structure of the liquid nitrogen transfer device provided by this utility model;

[0032] Figure 12 This is a schematic diagram of the structure of the bearing mechanism provided by this utility model;

[0033] Figure 13 This is a partial structural schematic diagram of the bearing mechanism provided by this utility model;

[0034] Figure 14 This is a third schematic diagram of a partial structure of the liquid nitrogen transfer device provided by this utility model;

[0035] Figure 15 This is a first schematic diagram of a portion of the structure of the opening mechanism provided by this utility model;

[0036] Figure 16 This is a second schematic diagram of a portion of the structure of the opening mechanism provided by this utility model;

[0037] Figure 17 This is a third schematic diagram of a portion of the structure of the opening mechanism provided by this utility model.

[0038] In the diagram: 100, liquid nitrogen tank; 200, transfer container; 210, container lid; 211, gripping part;

[0039] 10. Support structure; 11. First bracket; 12. Support plate; 121. Operating port; 122. Opening; 13. Second bracket; 14. Transfer wheel; 15. Leveling feet;

[0040] 20. Bearing mechanism; 21. Bearing plate; 22. Lifting assembly; 23. Protective plate; 231. Clearance opening; 24. Connecting rod; 25. Guide rod; 26. First slide rail; 27. First sliding block; 28. Limiting post; 29. ​​Limiting protrusion;

[0041] 30. Opening mechanism; 31. Gripper; 32. First drive assembly; 321. First motor; 33. Second drive assembly; 331. Second motor; 332. Second gear; 333. Second rack; 334. Third motor; 335. Third gear; 336. Third rack; 337. Fourth guide rail; 338. Fourth slider; 34. Positioning plate; 35. Positioning gripper; 36. First mounting plate; 37. Second mounting plate; 38. Third mounting plate;

[0042] 40. Liquid filling mechanism; 41. Liquid filling pipe; 411. First pipe body; 412. Second pipe body; 413. Extension; 42. Liquid filling drive assembly; 421. Liquid filling motor; 422. Liquid filling screw; 423. Liquid filling slider; 424. Liquid filling guide rail; 43. First fixing plate; 44. Second fixing plate; 45. Clamp;

[0043] 50. Cover plate mechanism; 51. Cover plate body; 52. Cover plate drive assembly; 521. Cover plate motor; 522. Cover plate gear; 523. Cover plate rack; 524. Cover plate slider; 525. Cover plate guide rail; 53. Guide rail; 531. Opening section; 532. Closing section; 533. Guide section; 54. Sealing plate. Detailed Implementation

[0044] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0045] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0048] See Figures 1 to 17 This embodiment provides a liquid nitrogen transfer device, including a support structure 10, a carrying mechanism 20, a lid opening mechanism 30, and a liquid filling mechanism 40. The support structure 10 is detachably mounted on the liquid nitrogen tank 100. The carrying mechanism 20 is mounted on the support structure 10 and includes a carrying plate 21 and a lifting assembly 22. The carrying plate 21 is used to carry the transfer bucket 200, and the lifting assembly 22 can drive the carrying plate 21 to rise and fall. The lid opening mechanism 30 is mounted on the support structure 10 and is used to open or close the lid 210 on the top of the transfer bucket 200. The liquid filling mechanism 40 is mounted on the support structure 10 and includes a liquid filling pipe 41 and a liquid filling drive assembly 42. The liquid filling pipe 41 is connected to the liquid nitrogen tank 100, and the liquid filling drive assembly 42 can drive the liquid filling pipe 41 to move to the top of the transfer bucket 200.

[0049] When liquid nitrogen needs to be transferred to the transfer container 200, the transfer container 200 is placed on the support plate 21. The opening mechanism 30 opens the lid 210 on top of the transfer container 200. The liquid addition drive assembly 42 drives the liquid addition pipe 41 to move to the top of the transfer container 200. The position of the transfer container 200 is adjusted by the lifting assembly 22 to facilitate the liquid addition pipe 41 adding liquid into the transfer container 200. After the liquid nitrogen is added, the liquid addition drive assembly 42 drives the liquid addition pipe 41 away from the transfer container 200, and the opening mechanism 30 closes the lid 210 on top of the transfer container 200. Through the cooperation of the support mechanism 20, the opening mechanism 30, and the liquid addition mechanism 40, the liquid nitrogen in the liquid nitrogen tank 100 is automatically transferred to the transfer container 200 without manual operation, thus avoiding frostbite. The support structure 10 is detachably installed on the liquid nitrogen tank 100 and can be used with different liquid nitrogen tanks 100 to improve the versatility and compatibility of the device and reduce costs.

[0050] For example, a temperature sensor is installed inside the transfer tank 200. When the temperature sensor detects that the temperature inside the transfer tank 200 is greater than or equal to a first temperature value, an alarm device is triggered, indicating that liquid nitrogen needs to be transferred into the transfer tank 200. The transfer tank 200 is placed on the support plate 21, and can be driven to the support plate 21 by an existing drive device. There are no restrictions on the position of the transfer tank 200.

[0051] In this embodiment, the lid opening mechanism 30 is located above the carrying mechanism 20, which facilitates the opening of the lid 210 on the top of the transfer bucket 200 to prevent interference.

[0052] In this embodiment, at least a portion of the liquid inlet tube 41 is a flexible tube, which can provide motion compensation. For example, see... Figures 1 to 4 The liquid filling pipe 41 includes a first pipe body 411 and a second pipe body 412. The first pipe body 411 is connected to the liquid filling drive assembly 42. One end of the second pipe body 412 is connected to one end of the first pipe body 411, and the other end of the second pipe body 412 is connected to the liquid nitrogen tank 100. The other end of the first pipe body 411 is used to add liquid to the transfer container 200. Exemplarily, the second pipe body 412 is a flexible pipe. Because the second pipe body 412 is a flexible pipe, it can provide motion compensation, preventing damage to the liquid filling pipe 41 when the liquid filling drive assembly 42 moves the first pipe body 411. In other embodiments, the first pipe body 411 may be a flexible pipe, or both the first pipe body 411 and the second pipe body 412 may be flexible pipes.

[0053] The liquid filling mechanism 40 includes a first fixed plate 43, and a liquid filling drive assembly 42 is disposed on the first fixed plate 43. The liquid filling drive assembly 42 can be a cylinder, a hydraulic cylinder, or a screw mechanism. For example, the liquid filling drive assembly 42 includes a liquid filling motor 421, a liquid filling screw 422, a liquid filling slider 423, and a liquid filling guide rail 424. The liquid filling motor 421 drives the liquid filling screw 422 to rotate. The liquid filling slider 423 is threadedly connected to the liquid filling screw 422 and slidably connected to the liquid filling guide rail 424. The first tube body 411 is connected to the liquid filling slider 423. When the liquid filling motor 421 drives the liquid filling screw 422 to rotate, the liquid filling slider 423 moves along the liquid filling screw 422. The liquid filling guide rail 424 limits and guides the liquid filling slider 423 to ensure smooth movement of the liquid filling slider 423.

[0054] The liquid dispensing mechanism 40 also includes a second fixing plate 44, on which the first tube 411 is disposed, and the liquid dispensing drive assembly 42 is connected to the second fixing plate 44. The second fixing plate 44 facilitates the fixing of the first tube 411. For example, the first tube 411 is fixed to the second fixing plate 44 by multiple clamps 45.

[0055] The end of the liquid addition pipe 41 away from the liquid nitrogen tank 100 extends vertically downward to form an extension 413, which can extend into the transfer container 200. The extension 413 facilitates insertion into the transfer container 200 and prevents liquid nitrogen from splashing out during addition. For example, when liquid nitrogen needs to be transferred into the transfer container 200, the transfer container 200 is placed on the support plate 21, the lid opening mechanism 30 opens the lid 210 on top of the transfer container 200, the liquid addition drive assembly 42 drives the liquid addition pipe 41 to move to the top of the transfer container 200, and the lifting assembly 22 moves the transfer container 200 upward so that the extension 413 of the liquid addition pipe 41 can extend into the transfer container 200.

[0056] The dispensing mechanism 40 also includes a position sensor for monitoring the position of the dispensing tube 41 to control its stroke. Since the distance the dispensing slider 423 moves is equal to the distance the dispensing tube 41 moves, the position sensor can be mounted on the first fixed plate 43 for easy monitoring. For example, the position sensor includes two photoelectric switches. One switch is triggered when the dispensing slider 423 is in the initial position, and the other switch is triggered when the dispensing slider 423 moves to the dispensing position. Therefore, based on the signals from the photoelectric switches, it can be determined whether the dispensing tube 41 is in the initial position or the dispensing position.

[0057] In some embodiments, a switch valve is provided at the connection between the liquid nitrogen tank 100 and the liquid filling pipe 41, or a switch valve is provided on the liquid filling pipe 41. When the switch valve is open, liquid nitrogen in the liquid nitrogen tank 100 flows into the liquid filling pipe 41; when the switch valve is closed, liquid nitrogen leakage is prevented. In some embodiments, an insulation element is provided on the outside of the liquid filling pipe 41 to prevent the liquid nitrogen from heating up. The insulation element can be existing insulation cotton.

[0058] The support structure 10 supports the bearing mechanism 20, the opening mechanism 30, and the liquid filling mechanism 40, facilitating the overall transport of the device. Once the liquid nitrogen in one liquid nitrogen tank 100 has been transferred, the support structure 10 can be disassembled from the liquid nitrogen tank 100 and connected to another liquid nitrogen tank 100 to facilitate the transfer of liquid nitrogen from the other liquid nitrogen tank 100.

[0059] For example, the support structure 10 includes a support plate 12, which can be mounted on the liquid nitrogen tank 100. The opening mechanism 30 is disposed above the support plate 12, and the liquid filling mechanism 40 and the bearing mechanism 20 are both disposed below the support plate 12, so that the various components on the entire support structure 10 are evenly distributed. The support structure 10 also includes a first bracket 11, which is disposed above the support plate 12 and is used to support the opening mechanism 30.

[0060] Since the opening mechanism 30 is located above the support plate 12, and the carrying mechanism 20 is located below the support plate 12, in order to facilitate the opening mechanism 30 to open the transfer bucket 200 on the carrying mechanism 20, an operation port 121 is provided on the support plate 12 at the position corresponding to the carrying mechanism 20. The opening mechanism 30 can open or close the bucket lid 210 at the top of the rotating mechanism through the operation port 121.

[0061] See Figure 1 , Figure 2 , Figures 5 to 10 The liquid nitrogen transfer device also includes a cover plate mechanism 50, which includes a cover plate and a cover plate drive assembly 52. ​​The cover plate drive assembly 52 can drive the cover plate body 51 to move to open or close the operation port 121 to prevent liquid nitrogen from splashing out of the operation port 121.

[0062] The cover plate drive assembly 52 can be a cylinder, a hydraulic cylinder, or a lead screw mechanism. For example, the cover plate drive assembly 52 includes a cover plate motor 521, a cover plate gear 522, a cover plate rack 523, a cover plate slider 524, and a cover plate guide rail 525. The cover plate motor 521 drives the cover plate gear 522 to rotate. The cover plate rack 523 is connected to the cover plate slider 524, the cover plate slider 524 is slidably connected to the cover plate guide rail 525, and the cover plate body 51 is connected to the cover plate slider 524.

[0063] The cover plate mechanism 50 also includes a position sensor for monitoring the position of the cover plate body 51 to control the travel of the cover plate body 51. Since the distance the cover plate slider 524 moves is equal to the distance the cover plate body 51 moves, the position sensor can monitor the position of the cover plate slider 524 for easy monitoring. For example, the position sensor includes two photoelectric switches. When the cover plate slider 524 is in the open position, one photoelectric switch is triggered; when the cover plate slider 524 moves to the closed position, the other photoelectric switch is triggered. Therefore, based on the signals from the photoelectric switches, it can be determined whether the cover plate body 51 is in the open or closed position.

[0064] In some embodiments, the cover body 51 is provided with a layer and is capable of moving linearly between an open position and a closed position. To ensure sealing, the cover body 51 and the support plate 12 are in surface-to-surface contact. Due to the large contact area, the cover body 51 experiences greater friction during sliding.

[0065] To reduce friction between the cover plate body 51 and the support plate 12 and ensure sealing, in some embodiments, the cover plate mechanism 50 further includes a guide rail 53 extending from the open position to the closed position, such as... Figure 10 As shown, at least part of the guide rail 53 gradually descends. The cover body 51 has two layers, which are elastically connected. The upper cover body 51 is connected to the cover drive assembly 52, and the lower cover body 51 is slidably connected to the guide rail 53. When the cover drive assembly 52 drives the cover body 51 to move from the open position to the closed position, the upper cover body 51 moves linearly, and the lower cover body 51 moves along the guide rail 53. Because at least part of the guide rail 53 gradually descends, the cover body 51 provides a good seal for the operating port 121 during the process of moving to the closed position.

[0066] For example, the guide rail 53 includes an opening section 531, a closing section 532, and a guide section 533. The opening section 531 is positioned in the open position, and the closing section 532 is positioned in the closed position. The opening section 531 is higher than the closing section 532. The guide section 533 gradually descends from the open position to the closed position to smoothly connect the opening section 531 and the guide section 533. When the cover plate drive assembly 52 drives the cover plate body 51 to move from the open position to the closed position, the upper cover plate body 51 moves in a straight line, and the lower cover plate body 51 gradually descends along the guide section 533 of the guide rail 53 until it reaches the closing section 532 to seal the operating port 121 under the action of elasticity.

[0067] In some embodiments, the cover mechanism 50 further includes a guide rail 53 extending from the open position to the closed position, such as... Figure 9As shown, the guide rail 53 rises first and then falls. The cover plate body 51 has two layers, which are elastically connected. The upper cover plate body 51 is connected to the cover plate drive assembly 52, and the lower cover plate body 51 is slidably connected to the guide rail 53. When the cover plate drive assembly 52 drives the cover plate body 51 to move from the open position to the closed position, the upper cover plate body 51 moves linearly, and the lower cover plate body 51 rises first and then falls along the guide rail 53. The rising movement moves the cover plate body 51 away from the support plate 12 to reduce friction, and the falling movement seals the operating port 121.

[0068] To ensure sealing, the cover plate mechanism 50 also includes a sealing plate 54, which is fixedly mounted on the support plate 12 and is in the open position. When the cover plate body 51 is in the open position, the sealing plate 54 is located under the cover plate body 51. When the cover plate body 51 moves to the closed position, the sealing plate 54 abuts against one end of the cover plate body 51 to seal the gap between the cover plate body 51 and the support plate 12.

[0069] To reduce friction, the cover plate body 51 and the guide rail 53 are connected by rollers to convert sliding friction into rolling friction.

[0070] To facilitate the handling of the entire device, the support structure 10 also includes a second bracket 13, which is located below the support plate 12. The bottom of the second bracket 13 is equipped with a transfer wheel 14. The transfer wheel 14 facilitates the movement of the entire device. The bottom of the second bracket 13 is also equipped with a leveling foot 15, which is threadedly connected to the second bracket 13 to allow for height adjustment, ensuring the stability of the entire device.

[0071] The second support 13 forms a receiving space, within which the liquid nitrogen tank 100 is located. This maximizes space utilization and ensures a compact structure. An opening 122 is provided on the support plate 12 corresponding to the top cover of the liquid nitrogen tank 100 to avoid obstructing the top cover, allowing the support plate 12 to be mounted on top of the liquid nitrogen tank 100. In use, a crane can be used to move the entire device downwards, positioning the liquid nitrogen tank 100 within the receiving space, with the support plate 12 mounted on top of the liquid nitrogen tank 100. The device can then be leveled using the leveling feet 15.

[0072] See Figure 1 , Figure 2 , Figures 11 to 13The supporting mechanism 20 is disposed on one side of the liquid nitrogen tank 100. The supporting plate 21 can be slidably connected to the support plate 12 or the second bracket 13 to facilitate the smooth lifting and lowering of the supporting plate 21. In this embodiment, the supporting mechanism 20 also includes a protective plate 23, which forms a protective cavity. The supporting plate 21 is disposed within the protective cavity, and the lifting assembly 22 is disposed at the bottom of the protective cavity. By providing the protective plate 23, the transfer tank 200 is protected from liquid nitrogen splashing during the addition of liquid nitrogen; on the other hand, it provides support for the supporting plate 21 and the lifting assembly 22.

[0073] The liquid filling mechanism 40 is located on one side of the protective plate 23. A clearance opening 231 is provided on the protective plate 23 corresponding to the position of the liquid filling pipe 41, allowing the liquid filling pipe 41 to enter the protective cavity through the clearance opening 231. The clearance opening 231 facilitates the entry and exit of the liquid filling pipe 41 into the protective cavity, preventing interference with the cap opening mechanism 30. When the cap is opened, the liquid filling pipe 41 is outside the protective cavity. After opening, the liquid filling pipe 41 moves into the protective cavity, and the lifting assembly 22 drives the transfer tank 200 to rise closer to the liquid filling pipe 41.

[0074] For example, multiple protective plates 23 are provided, including a bottom protective plate, a back protective plate, and two side protective plates. The front of the protective cavity is open to facilitate the loading and unloading of the transfer bucket 200. The various protective plates 23 can be welded together or fixed with locking devices. For example, the bottom protective plate is connected to the support plate 12 by multiple connecting rods 24, and the back protective plate and side protective plates are both connected to the bottom protective plate.

[0075] The lifting assembly 22 is connected to the bottom protective plate. The lifting assembly 22 can be an existing cylinder, hydraulic cylinder, or lead screw structure. To ensure smooth movement of the support plate 21, a guide rod 25 is provided on the support plate 21. The guide rod 25 is slidably connected to the bottom protective plate and extends vertically to guide the support plate 21. The number of guide rods 25 can be set according to actual needs and is not limited here.

[0076] In some embodiments, the support plate 21 is provided with one layer, and the lifting assembly 22 is directly connected to the support plate 21. In some embodiments, the support plate 21 is provided with at least two layers, with adjacent layers of support plates 21 slidably connected. The transfer bucket 200 is placed on the uppermost support plate 21, and the lifting assembly 22 is connected to the lowermost support plate 21. The sliding direction of the support plate 21 extends horizontally to facilitate the transfer bucket 200 sliding into or out of the protective cavity, making it convenient to pick up and put down the transfer bucket 200.

[0077] For example, the support plate 21 has three layers. A first slide rail 26 and a first sliding block 27 are provided between adjacent layers of support plates 21. The first slide rail 26 is located on the lower layer of support plate 21, and the first sliding block 27 is connected to the upper layer of support plate 21. The first sliding block 27 and the first slide rail 26 are slidably connected. When it is necessary to pick up or put down the transfer bucket 200, the uppermost support plate 21 is pulled out, so that the first sliding block 27 slides along the first slide rail 26. When the uppermost support plate 21 is pulled out to its limit position, the second layer of support plate 21 is also pulled out. By setting up multiple layers of support plates 21, it is easier to pick up and put down the transfer bucket 200.

[0078] A limiting post 28 is provided on the support plate 21 for insertion into the limiting hole at the bottom of the transfer bucket 200, thereby limiting the transfer bucket 200. A limiting protrusion 29 is provided on the support plate 21 around the circumference of the transfer bucket 200, forming a limiting cavity to limit the transfer bucket 200. When the support plate 21 has multiple layers, the limiting post 28 and the limiting protrusion 29 are provided on the uppermost support plate 21.

[0079] See Figure 1 , Figure 2 , Figure 12 , Figures 14 to 17 The lid-opening mechanism 30 can employ an existing robotic arm, capable of gripping the lid 210 and moving it. Exemplarily, the lid-opening mechanism 30 includes grippers 31 and a drive assembly, which drives the grippers 31 to pick up and place the lid 210 and / or move it. The number of grippers 31 can be set according to actual needs, such as one gripper 31, two grippers 31, or more grippers 31. When one gripper 31 is provided, it can be engaged or magnetically connected to the transfer bucket 200; when two or more grippers 31 are provided, they can move closer or further apart to clamp or release the lid 210.

[0080] For example, the lid opening mechanism 30 includes at least two grippers 31 and a first drive assembly 32, which can drive the grippers 31 to move closer or further apart to clamp or release the lid 210.

[0081] The first drive assembly 32 includes a first motor 321, a first gear, and two first racks. The two first racks are distributed on opposite sides of the first gear. The first motor 321 is used to drive the first gear to rotate so that the two first racks move towards or away from each other. The gripper 31 is connected to the first rack, thereby enabling the two grippers 31 to move closer or further away from each other.

[0082] The top of the lid 210 is provided with a gripping portion 211, and the grippers 31 are capable of clamping the gripping portion 211. In this embodiment, the gripping portion 211 has a square structure. Exemplarily, the lid opening mechanism 30 includes two grippers 31, which are capable of moving along a first straight line to clamp the opposite sides of the gripping portion 211. When the gripping portion 211 has a circular structure, at least three grippers 31 can be provided close to each other to clamp the circumference of the gripping portion 211.

[0083] To ensure precise clamping of the lid 210, the lid opening mechanism 30 also includes a positioning plate 34 and two positioning claws 35. The two positioning claws 35 are spaced apart along a second straight line. The positioning claws 35 are rotatably connected to the positioning plate 34, and an elastic element is provided between them. The first straight line is perpendicular to the second straight line. When the clamping claw 31 approaches the lid 210, the positioning claws 35 contact the gripping part 211. The gripping part 211 guides the positioning claws 35 to rotate so that the elastic force clamps the opposite sides of the gripping part 211.

[0084] For example, the lid opening mechanism 30 includes a second drive component 33, which can drive the first drive component 32 to move so as to move the lid 210; or, the second drive component 33 can move the lid 210.

[0085] Exemplarily, the second drive assembly 33 is capable of driving the first drive assembly 32 to move along the X-axis and Z-axis. Exemplarily, the second drive assembly 33 includes a second motor 331, a second gear 332, and a second rack 333. The second rack 333 extends along the Z-axis. Both the second rack 333 and the first drive assembly 32 are disposed on the first mounting plate 36. The second motor 331 is disposed on the second mounting plate 37 and is capable of driving the second gear 332 to rotate. The second gear 332 meshes with the second rack 333. The second mounting plate 37 is slidably connected to the first mounting plate 36.

[0086] To ensure the stable sliding of the first mounting plate 36, a second slide rail and a second sliding block can be provided between the second mounting plate 37 and the first mounting plate 36. The second slide rail is fixed to the second mounting plate 37, and the second sliding block is fixed to the first mounting plate 36. The second sliding block is slidably connected to the second slide rail.

[0087] The second drive assembly 33 also includes a third motor 334, a third gear 335, and a third rack 336. The third rack 336 extends along the X-axis and is disposed on the third mounting plate 38. The third motor 334 is disposed on the second mounting plate 37 and can drive the third gear 335 to rotate. The third gear 335 meshes with the third rack 336. The third mounting plate 38 is slidably connected to the second mounting plate 37.

[0088] To ensure the stable sliding of the second mounting plate 37, a third slide rail and a third sliding block can be provided between the second mounting plate 37 and the third mounting plate 38. The third slide rail is fixed to the third mounting plate 38, and the third sliding block is fixed to the second mounting plate 37. The third sliding block and the third slide rail are slidably connected.

[0089] Since the position of the supporting mechanism 20 is fixed, the first drive assembly 32 only needs to move along the X and Z axes to align with the transfer bucket 200. In some embodiments, the second drive assembly 33 can also drive the first drive assembly 32 to move along the Y axis. Exemplarily, the second drive assembly 33 further includes a fourth motor, a fourth lead screw, a fourth guide rail 337, and a fourth slider 338. The fourth guide rail 337 extends along the Y axis, the third mounting plate 38 is connected to the fourth slider 338, the fourth pulley is slidably connected to the fourth guide rail 337 and threadedly connected to the fourth lead screw, and the fourth motor is used to drive the fourth lead screw to rotate.

[0090] When liquid nitrogen needs to be transferred into the transfer tank 200, the transfer tank 200 is placed on the support plate 21. The cover drive assembly 52 drives the cover body 51 from the closed position to the open position, so that the operation port 121 on the support plate 12 opens. The lid opening mechanism 30 opens the lid 210 on the top of the transfer tank 200. The cover drive assembly 52 drives the cover body 51 from the open position to the closed position. At the same time, the liquid addition drive assembly 42 drives the liquid addition pipe 41 to move to the top of the transfer tank 200. The lifting assembly 22 drives the transfer tank 200 to rise so that the extension 413 of the liquid addition pipe 41 is inserted into the transfer tank 200. After the liquid nitrogen is added, the lifting assembly 22 drives the transfer tank 200 to fall. The liquid addition drive assembly 42 drives the liquid addition pipe 41 away from the transfer tank 200. The cover drive assembly 52 drives the cover body 51 from the closed position to the open position, so that the operation port 121 on the support plate 12 opens. The lid opening mechanism 30 closes the lid 210 on the top of the transfer tank 200.

[0091] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A liquid nitrogen transfer device, characterized in that, include: The support structure (10) is detachably mounted on the liquid nitrogen tank (100). A carrying mechanism (20) is provided on the support structure (10). The carrying mechanism (20) includes a carrying plate (21) and a lifting assembly (22). The carrying plate (21) is used to carry the transfer bucket (200). The lifting assembly (22) can drive the carrying plate (21) to rise and fall. The lid opening mechanism (30) is provided on the support structure (10) and is used to open or close the lid (210) on the top of the transfer bucket (200). A liquid filling mechanism (40) is provided on the support structure (10). The liquid filling mechanism (40) includes a liquid filling pipe (41) and a liquid filling drive assembly (42). The liquid filling pipe (41) is connected to the liquid nitrogen tank (100). The liquid filling drive assembly (42) can drive the liquid filling pipe (41) to move to the top of the transfer bucket (200).

2. The liquid nitrogen transfer device according to claim 1, characterized in that, The liquid filling tube (41) includes a first tube body (411) and a second tube body (412). The first tube body (411) is connected to the liquid filling drive assembly (42). One end of the second tube body (412) is connected to one end of the first tube body (411), and the other end of the second tube body (412) is connected to the liquid nitrogen tank (100). The other end of the first tube body (411) is used to add liquid to the transfer container (200).

3. The liquid nitrogen transfer device according to claim 2, characterized in that, The second tube (412) is a flexible tube.

4. The liquid nitrogen transfer device according to claim 2, characterized in that, The liquid adding mechanism (40) also includes a second fixing plate (44), the first tube (411) is disposed on the second fixing plate (44), and the liquid adding drive assembly (42) is connected to the second fixing plate (44).

5. The liquid nitrogen transfer device according to claim 1, characterized in that, The outside of the liquid filling pipe (41) is fitted with an insulation element; and / or, the end of the liquid filling pipe (41) away from the liquid nitrogen tank (100) extends vertically downward to form an extension (413), which can extend into the interior of the transfer bucket (200).

6. The liquid nitrogen transfer device according to claim 1, characterized in that, The supporting mechanism (20) also includes a protective plate (23), which forms a protective cavity. The supporting plate (21) is disposed inside the protective cavity, and the lifting component (22) is disposed at the bottom of the protective cavity.

7. The liquid nitrogen transfer device according to claim 6, characterized in that, The liquid filling mechanism (40) is located on one side of the protective plate (23). The protective plate (23) has a clearance opening (231) corresponding to the position of the liquid filling pipe (41). The liquid filling pipe (41) can enter the protective cavity through the clearance opening (231).

8. The liquid nitrogen transfer device according to claim 1, characterized in that, The lid opening mechanism (30) includes a gripper (31) and a drive assembly, which can drive the gripper (31) to pick up and put down the lid (210) and / or move the lid (210).

9. The liquid nitrogen transfer device according to any one of claims 1-8, characterized in that, The support structure (10) includes a support plate (12), which can be mounted on the liquid nitrogen tank (100). The opening mechanism (30) is located above the support plate (12). The liquid filling mechanism (40) and the bearing mechanism (20) are both located on the lower side of the support plate (12). An operation port (121) is provided on the support plate (12) at the position corresponding to the bearing mechanism (20).

10. The liquid nitrogen transfer device according to claim 9, characterized in that, It also includes a cover plate mechanism (50), which includes a cover plate body (51) and a cover plate drive assembly (52). The cover plate drive assembly (52) is capable of driving the cover plate body (51) to move between an open position and a closed position to open or close the operating port (121).

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