Sample placing platform for liquid nitrogen container in cell bank

Abstract

The utility model discloses a sample placing platform for a liquid nitrogen tank in a cell bank, and relates to the technical field of liquid nitrogen tanks. The device comprises a liquid nitrogen tank, a sample frame is arranged in the liquid nitrogen tank, a plurality of sample boxes which are longitudinally distributed at equal intervals are placed in the sample frame, a hook is fixedly installed at the top of the sample frame, a clamping assembly is arranged outside the liquid nitrogen tank in a sleeving mode, and two clamping rods are arranged above the liquid nitrogen tank. The clamping assembly is provided with a driving assembly used for driving the two clamping rods to be close to or away from each other. The driving assembly is controlled to drive the two clamping rods to get close to each other to clamp the sample frame, the two hands of a worker can be liberated after the sample frame is clamped, so that the sample box placed in the sample frame can be conveniently taken, after the sample box is taken, the hook is held by one hand, and the sample box can be conveniently taken. Meanwhile, the driving assembly is controlled to drive the two clamping rods to be far away from each other to loosen clamping of the sample frame, and then the sample frame can be placed in the liquid nitrogen tank again.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid nitrogen tanks, in particular to a sample placing platform for a liquid nitrogen tank in a cell bank. Background Art

[0002] Biological liquid nitrogen tank, also known as cryogenic liquid nitrogen storage tank, is a device specially used for storing biological samples. The main part is made of two layers of stainless steel or aluminum alloy, and the inner wall is coated with cryogenic protective coating to ensure that the temperature inside the tank remains stable at an extremely low level. This is one of the important laboratory equipment in the field of life sciences, with a wide range of applications, including biomedicine, biotechnology, genetics and other fields.

[0003] At present, when sampling from a liquid nitrogen tank used in a cell bank, since the sample rack for placing cells inside the liquid nitrogen tank is long, it is inconvenient for the staff to take out the cells inside the sample rack while taking out the sample rack with one hand. Therefore, the sampling process will take a long time, causing a large amount of volatilization of liquid nitrogen in the liquid nitrogen tank. Therefore, a sample placement platform for a liquid nitrogen tank in a cell bank is proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that when sampling from a liquid nitrogen tank currently used in a cell bank, due to the long length of the sample rack for placing cells inside the liquid nitrogen tank, it is inconvenient for the staff to take out the cells inside the sample rack while taking out the sample rack with one hand, so the sampling process will take a long time, resulting in a large amount of volatilization of liquid nitrogen in the liquid nitrogen tank. The utility model provides a sample placement platform for the liquid nitrogen tank in the cell bank.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0006] A sample placement platform for a liquid nitrogen tank in a cell bank comprises a liquid nitrogen tank, a sample rack is arranged inside the liquid nitrogen tank, a plurality of sample boxes equidistantly distributed longitudinally are placed inside the sample rack, a hook is fixedly installed on the top of the sample rack, a clamping assembly is arranged on the outer sleeve of the liquid nitrogen tank, two clamping rods are arranged above the liquid nitrogen tank, and a driving assembly for driving the two clamping rods to move closer to or away from each other is arranged on the clamping assembly.

[0007] Furthermore, the clamping assembly includes two fixed plates, and the sides of the two fixed plates close to each other are arranged in a V-shaped structure. The liquid nitrogen tank is placed between the two fixed plates. Connecting blocks are fixedly installed on the walls on both sides of each fixed plate. Bolts are commonly penetrated on each adjacent two connecting blocks, and a nut is threadedly connected to the tail end of each bolt.

[0008] Furthermore, the driving assembly includes a support rod, a support rod is fixedly installed on the top of the fixed plate located on the rear side, a mounting plate is fixedly installed on the top of the support rod, a servo motor is fixedly installed on the side of the mounting plate away from the liquid nitrogen tank, the output end of each servo motor passes through the mounting plate and is fixedly connected to a gear, two slide grooves are provided on the side of the mounting plate close to the liquid nitrogen tank, a slide rod is movably installed inside each slide groove, a rack is fixedly installed on the side of each connecting rod close to the liquid nitrogen tank, each rack is meshed with the gear, a connecting rod is fixedly installed on the top of the rack located below, the connecting rod is fixedly connected to the adjacent clamping rod, and the rack located above is fixedly connected to the adjacent clamping rod.

[0009] Furthermore, a convex groove is provided on the side where the two clamping rods are close to each other, a convex rod is movably installed inside each convex groove, a clamping plate is fixedly installed on the side where the two convex rods are close to each other, and the side where the two clamping plates are close to each other is arranged in a V-shaped structure.

[0010] Furthermore, a strip hole is opened on the side of the two clamping rods away from each other, and a screw rod is fixedly installed on the side of the two convex rods away from each other. Each screw rod passes through the interior of the adjacent strip hole, and each screw rod is threadedly connected with a nut 2.

[0011] Furthermore, a matching anti-slip strip is fixedly installed on one side of the two clamping rods close to each other, and a matching anti-slip strip is fixedly installed on one side of the two clamping plates close to each other.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. The utility model fixes the liquid nitrogen tank inside the clamping assembly in advance when taking the sample rack out of the liquid nitrogen tank. The clamping assembly can be suitable for clamping liquid nitrogen tanks of different diameters. When the sample rack is taken out from the liquid nitrogen tank, it is only necessary to control the driving assembly to drive the two clamping rods to move closer to each other to clamp the sample rack. When the sample rack is clamped, both hands of the staff will be freed, so that it is convenient to take the sample box placed inside the sample rack. After the sample box is taken out, the hook is held with one hand, and at the same time, the driving assembly is controlled to drive the two clamping rods to move away from each other to release the clamping of the sample rack, so that the sample rack can be placed inside the liquid nitrogen tank again. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the local structure of the drive assembly of the utility model;

[0016] Figure 3 It is a specific schematic diagram of the clamping rod of the utility model;

[0017] Figure numerals: 1, liquid nitrogen tank; 2, sample rack; 3, sample box; 4, hook; 5, clamping assembly; 51, fixing plate; 52, connecting block; 53, bolt; 54, nut one; 6, clamping rod; 7, driving assembly; 71, support rod; 72, mounting plate; 73, servo motor; 74, gear; 75, slide groove; 76, slide rod; 77, rack; 78, connecting rod; 8, convex groove; 9, convex rod; 10, clamping plate; 11, strip hole; 12, screw rod; 13, nut two; 14, anti-slip strip. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0021] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] like Figures 1 to 3As shown, a sample placement platform for a liquid nitrogen tank in a cell bank comprises a liquid nitrogen tank 1, a sample rack 2 is arranged inside the liquid nitrogen tank 1, a plurality of sample boxes 3 are placed inside the sample rack 2 and are longitudinally equidistantly distributed, a hook 4 is fixedly installed on the top of the sample rack 2, a clamping assembly 5 is arranged on the outer sleeve of the liquid nitrogen tank 1, two clamping rods 6 are arranged above the liquid nitrogen tank 1, and a driving assembly 7 for driving the two clamping rods 6 to move closer to or away from each other is arranged on the clamping assembly 5. It should be noted that when the sample rack 2 is taken out from the liquid nitrogen tank 1, the liquid nitrogen tank 1 is fixed inside the clamping assembly 5 in advance, and the clamping assembly 5 is clamped. The component 5 can be suitable for clamping liquid nitrogen tanks 1 of different diameters. When the sample rack 2 is taken out from the inside of the liquid nitrogen tank 1, it is only necessary to control the driving component 7 to drive the two clamping rods 6 to move closer to each other to clamp the sample rack 2. When the sample rack 2 is clamped, the staff's hands will be freed, so it is convenient to take the sample box 3 placed inside the sample rack 2. After the sample box 3 is taken, hold the hook 4 with one hand, and at the same time control the driving component 7 to drive the two clamping rods 6 to move away from each other to release the clamping of the sample rack 2, so that the sample rack 2 can be placed back into the liquid nitrogen tank 1.

[0023] like Figure 1 As shown, the clamping assembly 5 includes two fixing plates 51, and the sides of the two fixing plates 51 that are close to each other are both arranged in a V-shaped structure. The liquid nitrogen tank 1 is placed between the two fixing plates 51, and the wall surfaces on both sides of each fixing plate 51 are fixedly installed with connecting blocks 52, and bolts 53 are commonly penetrated through each two adjacent connecting blocks 52, and a nut 54 is threadedly connected to the tail end of each bolt 53. It should be noted that since the sides of the two fixing plates 51 that are close to each other are both arranged in a V-shaped structure, it can be suitable for clamping liquid nitrogen tanks 1 of different diameters. By rotating the nut 54, so that each two adjacent connecting blocks 52 are close to each other, the two fixing plates 51 can be brought close to each other to clamp the liquid nitrogen tank 1.

[0024] like Figure 1 , Figure 2As shown, the driving assembly 7 includes a support rod 71, a support rod 71 is fixedly installed on the top of the fixed plate 51 located at the rear side, a mounting plate 72 is fixedly installed on the top of the support rod 71, a servo motor 73 is fixedly installed on the side of the mounting plate 72 away from the liquid nitrogen tank 1, and the output end of each servo motor 73 passes through the mounting plate 72 and is fixedly connected to a gear 74, and two slide grooves 75 are provided on the side of the mounting plate 72 close to the liquid nitrogen tank 1, and a slide rod 76 is movably installed inside each slide groove 75, and each connecting rod 78 is fixedly installed on the side close to the liquid nitrogen tank 1. A rack 77 is meshed and connected with the gear 74, and is located below A connecting rod 78 is fixedly installed on the top of the rack 77, and the connecting rod 78 is fixedly connected to the adjacent clamping rod 6. The rack 77 located above is fixedly connected to the adjacent clamping rod 6. It should be noted that when the servo motor 73 is started, it can drive the gear 74 to reciprocate at a predetermined angle and speed, so that the two racks 77 can reciprocate in a straight line. The movement of each rack 77 drives the sliding rod 76 connected to it to slide synchronously in the corresponding sliding groove 75. The movement of the rack 77 located above will drive the clamping rod 6 connected to it to move synchronously. The movement of the rack 77 located below will drive the connecting rod 78 connected to it and the corresponding clamping rod 6 to move synchronously.

[0025] like Figure 1 , Figure 3 As shown, a convex groove 8 is provided on the side where the two clamping rods 6 are close to each other, and a convex rod 9 is movably installed inside each convex groove 8 (each convex rod 9 in the present technical solution is interference connected inside the corresponding convex groove 8), and a clamping plate 10 is fixedly installed on the side where the two convex rods 9 are close to each other, and the sides where the two clamping plates 10 are close to each other are arranged in a V-shaped structure. It should be noted that if the placement rack placed inside the liquid nitrogen tank 1 for placing samples is of a cylindrical structure, the two convex rods 9 can be movably installed inside the two convex grooves 8 respectively, and the placement racks with different diameters for placing samples can be clamped by utilizing the V-shaped structure on the sides where the two clamping plates 10 are close to each other.

[0026] like Figure 1 , Figure 3 As shown, a strip hole 11 is provided on the side of the two clamping rods 6 away from each other, and a screw rod 12 is fixedly installed on the side of the two convex rods 9 away from each other. Each screw rod 12 passes through the interior of the adjacent strip hole 11, and each screw rod 12 is threadedly connected with a nut 2 13. It should be noted that when the two convex rods 9 are respectively movably installed to the specified positions inside the two convex grooves 8, the two screw rods 12 will be respectively placed inside the two strip holes 11. At this time, rotating the two nuts 2 13 respectively can further fix the current positions of the two convex rods 9.

[0027] like Figure 1 , Figure 3As shown, the two clamping rods 6 are fixedly installed with matching anti-slip strips 14 on one side close to each other, and the two clamping plates 10 are fixedly installed with matching anti-slip strips 14 on one side close to each other. It should be noted that the anti-slip strips 14 can increase the friction force and improve the stability when clamping the sample rack 2.

[0028] In summary:

[0029] When the sample rack 2 is taken out from the interior of the liquid nitrogen tank 1, the liquid nitrogen tank 1 is fixed in advance inside the clamping assembly 5. The clamping assembly 5 can be suitable for clamping liquid nitrogen tanks 1 of different diameters. When the sample rack 2 is taken out from the interior of the liquid nitrogen tank 1, it is only necessary to control the driving assembly 7 to drive the two clamping rods 6 to move closer to each other to clamp the sample rack 2. When the sample rack 2 is clamped, the hands of the staff will be freed, so that it is convenient to take the sample box 3 placed inside the sample rack 2. After the sample box 3 is taken, hold the hook 4 with one hand, and at the same time control the driving assembly 7 to drive the two clamping rods 6 to move away from each other to release the clamping of the sample rack 2, so that the sample rack 2 can be placed back inside the liquid nitrogen tank 1.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A sample placement platform for a liquid nitrogen tank in a cell bank, characterized in that: The invention comprises a liquid nitrogen tank (1), wherein a sample rack (2) is arranged inside the liquid nitrogen tank (1), a plurality of sample boxes (3) are placed inside the sample rack (2) and are distributed equidistantly in the longitudinal direction, a hook (4) is fixedly installed on the top of the sample rack (2), a clamping assembly (5) is arranged on the outside of the liquid nitrogen tank (1), two clamping rods (6) are arranged above the liquid nitrogen tank (1), and a driving assembly (7) is arranged on the clamping assembly (5) for driving the two clamping rods (6) to move closer to or away from each other.

2. A sample placement platform for a liquid nitrogen tank in a cell bank according to claim 1, characterized in that: The clamping assembly (5) comprises two fixing plates (51), the sides of the two fixing plates (51) close to each other are arranged in a V-shaped structure, the liquid nitrogen tank (1) is placed between the two fixing plates (51), and connecting blocks (52) are fixedly installed on the wall surfaces on both sides of each fixing plate (51), and bolts (53) are commonly penetrated on each two adjacent connecting blocks (52), and a nut (54) is threadedly connected to the tail end of each bolt (53).

3. A sample placement platform for a liquid nitrogen tank in a cell bank according to claim 2, characterized in that: The driving assembly (7) comprises a support rod (71), a support rod (71) is fixedly installed on the top of the fixed plate (51) located at the rear side, a mounting plate (72) is fixedly installed on the top of the support rod (71), a servo motor (73) is fixedly installed on the side of the mounting plate (72) away from the liquid nitrogen tank (1), the output end of each servo motor (73) passes through the mounting plate (72) and is fixedly connected to a gear (74), two slide grooves (75) are provided on the side of the mounting plate (72) close to the liquid nitrogen tank (1), a slide rod (76) is movably installed inside each slide groove (75), each connecting rod (78) is fixedly installed on the side close to the liquid nitrogen tank (1), each rack (77) is meshed with the gear (74), a connecting rod (78) is fixedly installed on the top of the rack (77) located at the bottom, the connecting rod (78) is fixedly connected to the adjacent clamping rod (6), and the rack (77) located at the top is fixedly connected to the adjacent clamping rod (6).

4. The sample placement platform for a liquid nitrogen tank in a cell bank according to claim 1, characterized in that: A convex groove (8) is provided on the side where the two clamping rods (6) are close to each other, a convex rod (9) is movably installed inside each convex groove (8), a clamping plate (10) is fixedly installed on the side where the two convex rods (9) are close to each other, and the side where the two clamping plates (10) are close to each other is arranged in a V-shaped structure.

5. The sample placement platform for a liquid nitrogen tank in a cell bank according to claim 4, characterized in that: The two clamping rods (6) are provided with strip holes (11) on the sides away from each other, and the two convex rods (9) are fixedly provided with screw rods (12) on the sides away from each other. Each screw rod (12) passes through the interior of the adjacent strip holes (11), and each screw rod (12) is threadedly connected with a nut (13).

6. The sample placement platform for a liquid nitrogen tank in a cell bank according to claim 4, characterized in that: The two clamping rods (6) are fixedly mounted with matching anti-slip strips (14) on one side close to each other, and the two clamping plates (10) are fixedly mounted with matching anti-slip strips (14) on one side close to each other.

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