Liquid nitrogen tank cryopreservation frame

Abstract

The utility model discloses a liquid nitrogen tank cryopreservation frame, and relates to the field of liquid nitrogen tank storage, the liquid nitrogen tank cryopreservation frame comprises a cryopreservation box, a moving mechanism is arranged at the bottom of the cryopreservation box, and a connecting mechanism is arranged at the bottom of the cryopreservation box. The rack drives the gear to rotate so as to drive the roller to support the ground, so that a worker does not need to grasp a lifting rod and only needs to horizontally push the cryopreservation box to complete position movement of the cryopreservation box by means of rotation of the roller, the influence on the liquid nitrogen tank is reduced, and the device is more flexible; and the probability of errors caused by manual operation is also reduced.

Description

Technical Field

[0001] This application relates to the field of liquid nitrogen tank storage, and particularly to a cryopreservation rack for a liquid nitrogen tank. Background Art

[0002] The cryopreservation rack for a liquid nitrogen tank is used to store biological samples in low-temperature liquid nitrogen. It is usually made of low-temperature resistant materials and is designed to allow samples to be stored vertically or horizontally in the liquid nitrogen tank. The grid structure of the cryopreservation rack helps the samples to remain stable in liquid nitrogen and facilitates the classification and retrieval of samples.

[0003] For example, for a cryopreservation rack placed in a liquid nitrogen tank with the application number 202221525311.6, there are still the following deficiencies in actual use:

[0004] When the cryopreservation rack of the above patent is actually used, a screw rod is used to vertically connect the cryopreservation boxes. The connection tightness of this connection method is insufficient, which will cause the upper cryopreservation boxes to have a horizontal displacement phenomenon, resulting in an unstable state of the internal cell samples and affecting subsequent use. Moreover, the cryopreservation rack uses a lifting rod for movement, making the stored items inside unable to always be in a horizontal state during the movement process, so that the specimens are prone to damage and waste during the process of taking and placing. Utility Model Content

[0005] In order to improve the problems of inconvenient movement and unstable connection, this application provides a cryopreservation rack for a liquid nitrogen tank.

[0006] The cryopreservation rack for a liquid nitrogen tank provided by this application adopts the following technical solutions:

[0007] A cryopreservation rack for a liquid nitrogen tank includes a cryopreservation box, a moving mechanism is arranged at the bottom of the cryopreservation box, and a connecting mechanism is arranged at the bottom of the cryopreservation box;

[0008] The moving mechanism includes a lead screw rotatably arranged at the bottom of the cryopreservation box, a rack is fixedly arranged on the side wall of the lead screw, a rotating member is rotatably arranged on the side of the rack away from the lead screw, and a roller is rotatably arranged at one end of the rotating member;

[0009] The connecting mechanism includes a connecting frame fixedly arranged at the top of the cryopreservation box, a connecting box is fixedly arranged at the bottom of the cryopreservation box, and a moving rod is slidably arranged on the inner wall of the connecting box.

[0010] By adopting the above technical solutions, the lead screw is located at the horizontal center position at the top of the cryopreservation box, so that the transmission of the lead screw to both sides is more uniform, improving the stability of the structure.

[0011] Preferably, the moving mechanism also includes a horizontal plate fixedly connected to the bottom of the freezing box, the side wall of the horizontal plate is fixedly connected to a vertical plate fixedly connected to the bottom of the freezing box, the side wall of the vertical plate is movably penetrated by a screw rod, one end of the screw rod is fixedly connected to a turntable, the side wall of the turntable is fixedly connected to a handle, the side wall of the screw rod is threaded with a moving block, and the side wall of the moving block is movably penetrated by a round tube fixedly connected to the inner wall of the vertical plate.

[0012] By adopting the above technical solution, two round tubes are symmetrically arranged with the screw rod as the symmetry axis, so that the restraining force on the moving block is evenly dispersed, thereby avoiding excessive local stress.

[0013] Preferably, the side wall of the moving block is fixedly connected to the rack, and the bottom of the rack is meshedly connected with a gear.

[0014] By adopting the above technical solution, the horizontal motion is converted into circular rotation motion through the rack and the gear, so that the motion conversion is more stable.

[0015] Preferably, a connecting block is fixedly connected to the top of the rack, and a limiting block is fixedly connected to the top of the connecting block.

[0016] By adopting the above technical solution, the bottom area of ​​the limiting block is larger than the top cross-sectional area of ​​the connecting block, so that the bottom of the connecting block fits with the top of the limiting slide rail.

[0017] Preferably, a limiting slide rail fixedly connected to the inner wall of the vertical plate movably penetrates the side wall of the connection block, and a rotating member is fixedly connected to the side of the gear away from the moving block.

[0018] By adopting the above technical solution, a plurality of rotating parts are symmetrically arranged with the screw rod as the axis, thereby making the structural support more stable.

[0019] Preferably, a connecting tube fixedly connected to the inner wall of the horizontal plate is movably penetrated through the inner wall of the rotating member, one end of the connecting tube away from the horizontal plate movably penetrates the gear side wall, and the side wall of one end of the rotating member away from the connecting tube movably penetrates the roller side wall.

[0020] By adopting the above technical solution, the horizontal plate fixes the connecting pipe, so that the gear always keeps in meshing state with the rack, thereby achieving structural stability.

[0021] Preferably, the connection mechanism further comprises a moving rod movably penetrating the connection box, one end of the moving rod is fixedly connected to a pulling piece, and one end of the moving rod away from the pulling piece is fixedly connected to a fixing block movably penetrating the side wall of the vertical plate.

[0022] By adopting the above technical solution, a cavity is provided inside the connection box, and the diameter of the cavity inside the connection box is adapted to the round holes on the side wall of the vertical plate, so that the horizontal movement of the clamping block is smoother.

[0023] Preferably, the clamping block movably penetrates through the side wall of the connection frame, a spring fixedly connected to the inner wall of the connection box is sleeved on the outer wall of the moving rod, and one end of the spring away from the connection box is fixedly connected to the side wall of the clamping block.

[0024] By adopting the above technical solution, the spring is located inside the cavity provided inside the connection box, so as to prevent the clamping block from sliding out by itself due to the inertia during movement, thus causing accidents.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. By rotating the lead screw to drive the moving block to move horizontally, the rack drives the gear to rotate, and then drives the rollers to support the ground, so that the staff only needs to horizontally push the cryopreservation box without grasping the lifting rod, and the position movement of the cryopreservation box can be completed by means of the rotation of the rollers, thus reducing the impact on the liquid nitrogen tank, making the device more flexible, and also reducing the probability of errors caused by manual operation;

[0027] 2. By inserting the connection frame into the vertical plate and the horizontal plate, and then fixing the vertical plate and the connection frame simultaneously through the clamping block, the grids can be used independently or stacked according to needs, adapting to different experimental and storage requirements. Moreover, by vertically inserting on the four surfaces at the bottom of the cryopreservation box, the connection is more stable, reducing the lateral shaking problem between the cryopreservation boxes, and also reducing the inclination problem of the center of gravity shift caused by the excessive stacking height of multiple cryopreservation boxes. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an overall structure display diagram of the cryopreservation rack of the liquid nitrogen tank of the present application;

[0029] Figure 2 It is a partial structure display diagram of another perspective of the cryopreservation rack of the liquid nitrogen tank of the present application;

[0030] Figure 3 It is a partial display diagram of the lead screw of the cryopreservation rack of the liquid nitrogen tank of the present application;

[0031] Figure 4 It is a partial display diagram of the rotating part of the cryopreservation rack of the liquid nitrogen tank of the present application;

[0032] Figure 5 It is a partial display diagram of the connection frame of the cryopreservation rack of the liquid nitrogen tank of the present application;

[0033] Figure 6 It is a partial side sectional view of the spring of the cryopreservation rack of the liquid nitrogen tank of the present application.

[0034] Reference signs:

[0035] 1. Cryopreservation box;

[0036] 2. Moving mechanism; 21. Horizontal plate; 22. Vertical plate; 23. Lead screw; 24. Turntable; 25. Handle; 26. Moving block; 27. Circular tube; 28. Gear; 29. Rack; 210. Connecting block; 211. Limiting block; 212. Limiting slide rail; 213. Rotating member; 214. Connecting pipe; 215. Roller;

[0037] 3. Connecting mechanism; 31. Connecting frame; 32. Connecting box; 33. Moving rod; 34. Pulling member; 35. Clamping block; 36. Spring. Detailed implementation manners

[0038] The following further elaborates on this application in conjunction with the attached Figures 1-6 drawings for a more detailed description.

[0039] The embodiment of this application discloses a cryopreservation rack for a liquid nitrogen tank.

[0040] Referring to Figure 1 , a cryopreservation rack for a liquid nitrogen tank includes a cryopreservation box 1 for placing the liquid nitrogen tank. A moving mechanism 2 is provided at the bottom of the cryopreservation box 1, and a connecting mechanism 3 is provided at the bottom of the cryopreservation box 1.

[0041] When the cryopreservation box 1 needs to be moved, the staff grasps the handle 25, and then rotates the handle 25. The handle 25 will drive the turntable 24 to rotate, and the turntable 24 will drive the lead screw 23 to rotate. When the lead screw 23 rotates, it will drive the moving block 26 to move horizontally, and when the moving block 26 moves horizontally, it will drive the rack 29 to move horizontally.

[0042] Referring to Figure 2 , Figure 3 , the moving mechanism 2 includes a lead screw 23 rotatably arranged at the bottom of the cryopreservation box 1. The rack 29 is fixedly arranged on the side wall of the lead screw 23, so as to fix the rack 29 through the lead screw 23. The rotating member 213 is rotatably arranged on the side of the rack 29 away from the lead screw 23. The roller 215 is rotatably arranged at one end of the rotating member 213. The moving mechanism 2 further includes a horizontal plate 21 fixedly connected to the bottom of the cryopreservation box 1. The vertical plate 22 is fixedly connected to the side wall of the horizontal plate 21, so as to form a square frame through the vertical plate 22 and the horizontal plate 21. The top of the vertical plate 22 is fixedly connected to the bottom of the cryopreservation box 1, so as to fix the vertical plate 22 through the cryopreservation box 1. A circular hole one is formed through the side wall of the vertical plate 22, and the lead screw 23 movably passes through the circular hole one, so that the lead screw 23 is rotatably connected to the vertical plate 22. The turntable 24 is fixedly connected to one end of the lead screw 23 close to the turntable 24, and the handle 25 is fixedly connected to the side of the turntable 24 away from the lead screw 23, so as to drive the turntable 24 to rotate through the handle 25.

[0043] When the rack 29 moves horizontally, it will drive the gear 28 to rotate. When the gear 28 rotates, it will drive the rotating member 213 to rotate. The rotating member 213 will drive the roller 215 to rotate. The rotating member 213 will gradually change from a horizontal state to a vertical state, and the roller 215 will support the entire cryopreservation box 1 along with the rotating member 213, so that the roller 215 supports on the ground.

[0044] Refer to Figure 2 、 Figure 3 A threaded hole is formed through the side wall of the moving block 26, and the lead screw 23 is threaded through the threaded hole, so that the lead screw 23 is threadedly connected to the moving block 26. The rotation of the lead screw 23 will drive the two moving blocks 26 to move horizontally towards each other. A circular hole two is formed through the side wall of the moving block 26, and the round tube 27 movably passes through the circular hole two, so that the round tube 27 is slidably connected to the moving block 26. One end of the round tube 27 close to the vertical plate 22 is fixedly connected to the inner wall of the vertical plate 22, so that the vertical plate 22 fixes the round tube 27. One side of the moving block 26 close to the rack 29 is fixedly connected to the side wall of the rack 29. The rack 29 is meshed with the teeth on the outer wall of the gear 28 through the teeth at the bottom, so that the horizontal movement of the rack 29 can drive the gear 28 to rotate. One end of the rack 29 away from the gear 28 is fixedly connected to the bottom of the connecting block 210. One side of the connecting block 210 away from the rack 29 is fixedly connected to the bottom of the limiting block 211, so that the limiting block 211 is fixedly connected to the rack 29. A chute is formed through the top of the limiting slide rail 212, and the side wall of the connecting block 210 movably passes through the chute, so that the connecting block 210 is slidably connected to the limiting slide rail 212, so as to limit the rack 29 in the vertical direction through the limiting block 211.

[0045] So that the staff only needs to horizontally push the cryopreservation box 1, and the rotation of the roller 215 can drive the cryopreservation box 1 to move horizontally. When stacking the cryopreservation boxes 1 vertically, the staff first drives the handle 25 to rotate in the reverse direction, so as to drive the rotating member 213 to change from a vertical state to a horizontal state, thus completing the storage of the roller 215.

[0046] Refer to Figure 3 、 Figure 4, one side of the limit slide rail 212 close to the vertical plate 22 is fixedly connected to the inner wall of the vertical plate 22. The side of the gear 28 away from the moving block 26 is fixedly connected to the side wall of the rotating member 213, so that the gear 28 can drive the rotating member 213 to rotate. A circular hole three is penetrated through the inside of the rotating member 213, and the connecting pipe 214 movably penetrates through the circular hole three, so that the connecting pipe 214 is rotatably connected to the rotating member 213. One end of the connecting pipe 214 close to the horizontal plate 21 is fixedly connected to the inner wall of the horizontal plate 21. A circular hole four is penetrated through the side wall of the gear 28, and one end of the connecting pipe 214 away from the horizontal plate 21 movably penetrates through the circular hole four, so that the rotating member 213 is rotatably connected to the gear 28. A circular hole five is penetrated through the side wall of the roller 215, and one end of the side wall of the rotating member 213 away from the connecting pipe 214 movably penetrates through the circular hole five, so that the roller 215 is rotatably connected to the connecting pipe 214.

[0047] Subsequently, the staff inserts the horizontal plate 21 and the inner walls of the vertical plate 22 and the outer wall of the connection frame 31 downward in a fitting manner, so that when the connection frame 31 slides along the inner wall of the vertical plate 22, it will press the clamping block 35 to move horizontally. Subsequently, when the connection frame 31 is completely inserted into the vertical plate 22, the holes formed in the side wall of the connection frame 31 are aligned with the holes formed in the side wall of the vertical plate 22. At this time, the spring 36 will release the thrust to push the clamping block 35 to be clamped with both the vertical plate 22 and the connection frame 31 simultaneously, thus completing the vertical stacking connection of the cryopreservation box 1.

[0048] Refer to Figure 4 , Figure 5 , Figure 6 , the connection mechanism 3 includes a connection frame 31 fixedly arranged at the top of the cryopreservation box 1. A connection box 32 is fixedly arranged at the bottom of the cryopreservation box 1. One side of the connection box 32 close to the vertical plate 22 is fixedly connected to the vertical plate 22. A circular hole six is penetrated through the side wall of the connection box 32, and a moving rod 33 movably penetrates through the circular hole six, so that the moving rod 33 is slidably connected to the connection box 32. The moving rod 33 is slidably arranged on the inner wall of the connection box 32. The connection mechanism 3 further includes a moving rod 33 movably penetrating through the connection box 32. A pulling member 34 is fixedly connected to one end of the moving rod 33 close to the pulling member 34. One end of the moving rod 33 away from the pulling member 34 is fixedly connected to one end of the clamping block 35 close to the moving rod 33. A circular hole seven is penetrated through the side wall of the vertical plate 22, and the clamping block 35 movably penetrates through the circular hole seven, so that the clamping block 35 is slidably connected to the vertical plate 22. A circular hole eight is penetrated through the side wall of the connection frame 31, and the clamping block 35 movably penetrates through the circular hole eight, so that the clamping block 35 is slidably connected to the connection frame 31. A spring 36 is sleeved on the outer wall of the moving rod 33. One end of the spring 36 is fixedly connected to the inner wall of the connection box 32, and the end of the spring 36 away from the connection box 32 is fixedly connected to the side wall of the clamping block 35, so as to push the clamping block 35 to move horizontally through the compression and release of the spring 36.

[0049] When it is necessary to disconnect, just drive the pulling member 34 to drive the moving rod 33 to move horizontally, and the moving rod 33 drives the clamping block 35 to move horizontally to release the stacked connection state.

[0050] The implementation principle of a cryopreservation rack for a liquid nitrogen tank in an embodiment of the present application is as follows:

[0051] The staff rotates the grip 25, the grip 25 drives the screw rod 23 to rotate, the screw rod 23 drives the rack 29 to move horizontally, the rack 29 drives the roller 215 to rotate, and the rotating member 213 gradually changes from the horizontal state to the vertical state. The roller 215 supports the entire cryopreservation box 1 along with the rotating member 213. When vertically stacking the cryopreservation boxes 1, the staff first drives the grip 25 to rotate in the reverse direction to complete the storage of the roller 215. Subsequently, the staff inserts the horizontal plate 21 and the inner wall of the vertical plate 22 and the outer wall of the connection frame 31 downward in a fitting manner. So that when the connection frame 31 slides along the inner wall of the vertical plate 22, the connection frame 31 presses the clamping block 35 to move horizontally. Subsequently, when the connection frame 31 and the vertical plate 22 are completely inserted, the holes formed in the side wall of the connection frame 31 are aligned with the holes formed in the side wall of the vertical plate 22. At this time, the spring 36 pushes the clamping block 35 to be clamped with both the vertical plate 22 and the connection frame 31 simultaneously, thus completing the vertical stacked connection of the cryopreservation box 1. When it is necessary to disconnect, just drive the pulling member 34 to drive the clamping block 35 to move horizontally to release it.

[0052] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A liquid nitrogen tank freezing rack, comprising a freezing box (1), characterized in that: The bottom of the freezing box (1) is provided with a moving mechanism (2), and the bottom of the freezing box (1) is provided with a connecting mechanism (3); The moving mechanism (2) comprises a screw rod (23) rotatably arranged at the bottom of the freezing box (1), a rack (29) is fixedly arranged on the side wall of the screw rod (23), a rotating member (213) is rotatably arranged on the side of the rack (29) away from the screw rod (23), and a roller (215) is rotatably arranged on one end of the rotating member (213); The connecting mechanism (3) comprises a connecting frame (31) fixedly arranged on the top of the freezing box (1), a connecting box (32) fixedly arranged on the bottom of the freezing box (1), and a moving rod (33) slidably arranged on the inner wall of the connecting box (32).

2. A liquid nitrogen tank freezing rack according to claim 1, characterized in that: The moving mechanism (2) further comprises a horizontal plate (21) fixedly connected to the bottom of the freezing box (1); the side wall of the horizontal plate (21) is fixedly connected to a vertical plate (22) fixedly connected to the bottom of the freezing box (1); the side wall of the vertical plate (22) is movably penetrated by a screw rod (23); one end of the screw rod (23) is fixedly connected to a turntable (24); the side wall of the turntable (24) is fixedly connected to a handle (25); the side wall of the screw rod (23) is threadedly penetrated by a moving block (26); the side wall of the moving block (26) is movably penetrated by a round tube (27) fixedly connected to the inner wall of the vertical plate (22).

3. A liquid nitrogen tank freezing rack according to claim 2, characterized in that: The side wall of the moving block (26) is fixedly connected to the rack (29), and the bottom of the rack (29) is meshingly connected to a gear (28).

4. A liquid nitrogen tank freezing rack according to claim 3, characterized in that: The top of the rack (29) is fixedly connected to a connecting block (210), and the top of the connecting block (210) is fixedly connected to a limiting block (211).

5. A liquid nitrogen tank freezing rack according to claim 4, characterized in that: A limiting slide rail (212) is movably penetrated through the side wall of the connection block (210) and is fixedly connected to the inner wall of the vertical plate (22); a rotating member (213) is fixedly connected to the side of the gear (28) away from the moving block (26).

6. A liquid nitrogen tank freezing rack according to claim 5, characterized in that: A connecting pipe (214) fixedly connected to the inner wall of the horizontal plate (21) is movably penetrated through the inner wall of the rotating member (213); one end of the connecting pipe (214) away from the horizontal plate (21) movably penetrates the side wall of the gear (28); and the side wall of one end of the rotating member (213) away from the connecting pipe (214) movably penetrates the side wall of the roller (215).

7. A liquid nitrogen tank freezing rack according to claim 1, characterized in that: The connecting mechanism (3) further comprises a moving rod (33) movably penetrating the connecting box (32), one end of the moving rod (33) being fixedly connected to a pulling member (34), and one end of the moving rod (33) away from the pulling member (34) being fixedly connected to a clamping block (35) movably penetrating the side wall of the vertical plate (22).

8. A liquid nitrogen tank freezing rack according to claim 7, characterized in that: The clamping block (35) movably penetrates the side wall of the connection frame (31); the outer wall of the moving rod (33) is sleeved with a spring (36) fixedly connected to the inner wall of the connection box (32); one end of the spring (36) away from the connection box (32) is fixedly connected to the side wall of the clamping block (35).

Images