Clamping device for cell cryopreservation tube

Abstract

The utility model discloses a clamping device for a cell cryopreservation tube. The clamping device is characterized in that two rotating shafts are arranged on the inner side of a holding tube; the connecting rods are respectively fixed with the rotating shaft and the clamping piece; the two clamping pieces can clamp the cell cryopreservation tube together; the torsion spring is sleeved on the rotating shaft and is respectively fixed with the rotating shaft and the holding pipe; one ends of the two abutting plates are respectively fixed with the two rotating shafts; the moving part is arranged on the inner side of the holding pipe in a sliding mode, two rolling wheels are arranged on the moving part, the two rolling wheels are located between the two abutting plates, and the two rolling wheels abut against the two abutting plates in a rolling mode respectively. When the moving piece moves relative to the holding pipe, the rolling wheel can push the abutting plate to move, the abutting plate can drive the rotating shaft to rotate, then the two clamping pieces are close to each other, and therefore the clamping action on the cell cryopreservation pipe is achieved; due to the design of the torsional spring, the clamping piece can be reset after completing the clamping action; the clamping device is simple and reliable in structure, and clamping and releasing of the cell cryopreservation tube are simple.

Description

Technical Field

[0001] The utility model relates to the field of biomedical instruments, and more specifically to a clamping device for cell cryopreservation tubes. Background Art

[0002] When clamping and observing or transferring cell cryopreservation tubes, the conventional operation is to use ordinary tweezers to clamp the tube wall of the tube cap of the cell cryopreservation tube. Although this clamping method is simple, the cell cryopreservation tube is easy to fall off. Especially when the relevant personnel shake or tilt the clamped cell cryopreservation tube at a certain angle for observation, the cell cryopreservation tube is very easy to fall off from clamping tools such as tweezers. At this time, the staff needs to always hold the tweezers tightly, and the operation process is rather troublesome; there are also clamping tools for test tubes or cell cryopreservation tubes on the market, but their structures are relatively complex and they cannot reliably clamp cell cryopreservation tubes of different specifications.

[0003] Therefore, how to provide a clamping device for cell cryopreservation tubes to overcome the above problems is an urgent problem to be solved by those skilled in the art. Summary of the Utility Model

[0004] In view of this, the utility model provides a clamping device for cell cryopreservation tubes.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] A clamping device for cell cryopreservation tubes for clamping cell cryopreservation tubes, comprising:

[0007] A holding tube, the holding tube has openings at both ends and two mutually parallel rotating shafts are rotatably supported inside it, and the plane defined by the central axes of the two rotating shafts is perpendicular to the tube center line of the holding tube;

[0008] A clamping member, the clamping member includes two connecting rods, two clamping members and two torsion springs. One ends of the two connecting rods are respectively fixed to the two rotating shafts, and the other ends of the two connecting rods are located outside the holding tube and are respectively fixed to the two clamping members; the two clamping members are symmetrically arranged with respect to the tube center line of the holding tube, and the cell cryopreservation tube can be clamped and limited between the two clamping members; the two torsion springs are respectively sleeved on the two rotating shafts, one ends of the two torsion springs are respectively fixed to the two rotating shafts, and the other ends of the two torsion springs are both fixed to the holding tube;

[0009] The clamping drive assembly comprises an abutment plate, a moving part and a roller, wherein two abutment plates are provided, one end of each of the two abutment plates is fixed to the two rotating shafts, the plate surface of the abutment plate is parallel to the axis line of the rotating shaft, and the connecting rod, the rotating shaft and the abutment plate are arranged in sequence along the length direction of the holding tube; one end of the moving part is slidably arranged on the inner side of the holding tube, the sliding direction of the moving part relative to the holding tube is the same as the length direction of the holding tube, and two rollers parallel to each other are rotatably supported on the moving part, the two rollers are symmetrically arranged about the center line of the holding tube, the axis lines of the rollers are parallel to the axis line of the rotating shaft, the two rollers are located between the two abutment plates, the outer side walls of the two rollers respectively roll and abut against the plate surfaces of the two abutment plates, and the maximum distance between the two rollers is greater than the maximum distance between the two rotating shafts.

[0010] It can be known from the above technical scheme that compared with the prior art, the utility model discloses a cell cryopreservation tube clamping device. The utility model designs a rotating shaft, a connecting rod, a clamping piece, an abutment plate, a moving piece and a roller on the inner side of the holding tube. When the moving piece moves relative to the holding tube, the two rollers can push the two abutment plates to move synchronously and oppositely. When the abutment plates move, they can drive the rotating shaft to rotate, thereby realizing the two clamping pieces to approach each other, thereby realizing the clamping action of the cell cryopreservation tube; by designing a torsion spring, the two connecting rods and the clamping piece always tend to move away from each other, and the two abutment plates can always roll and abut with the two rollers respectively, which is beneficial to the resetting of the two clamping pieces after completing the clamping action; the clamping device has a simple and reliable structure, and is relatively simple for clamping and releasing the cell cryopreservation tube.

[0011] Preferably, two long strip-shaped clearance holes are symmetrically formed on the tube wall of the gripping tube, the length direction of the clearance holes is the same as the tube length direction of the gripping tube, the width of the clearance holes is greater than the width of the abutment plate, and the end of the abutment plate away from the rotating shaft can pass through the clearance holes. When the abutment plate is in motion, the abutment plate and the tube wall of the gripping tube will not interfere with each other.

[0012] Preferably, the moving member includes a mounting frame, a plug rod, a spring, and a pressing tube. The mounting frame is located inside the holding tube, and two rollers are rotatably connected to the mounting frame; one end of the plug rod is fixed to the mounting frame, and the plug rod is coaxially arranged with the holding tube; the spring is coaxially sleeved on the plug rod, and the length of the plug rod is greater than the length of the spring; one end of the pressing tube is open and the other end is closed, and it is coaxially arranged with the holding tube. The open end of the pressing tube is slidably arranged inside the pressing tube. One end of the plug rod away from the mounting frame is slidably inserted into the pressing tube, and the two ends of the spring respectively abut against the mounting frame and the end wall of the open end of the pressing tube. The two clamping members will not overly clamp the cell cryopreservation tube.

[0013] Preferably, the maximum distance between the two rollers is greater than the maximum outer contour diameter of the mounting frame, and the outer diameter of the spring is less than the maximum outer contour diameter of the mounting frame. The spring and the mounting frame will not interfere with the abutting plate.

[0014] Preferably, it further includes a pressing sleeve. The holding tube is arranged inside the pressing sleeve. The pressing sleeve has an inner side wall one and an inner side wall two that are oppositely arranged and parallel to each other; a long slot is opened on the side wall of the holding tube, and the length direction of the long slot is the same as the tube length direction of the holding tube. An elastic plate is integrally formed at one end wall of the long slot. The length direction of the elastic plate is the same as the tube length direction of the holding tube. The plate surface of the elastic plate is perpendicular to the axis line of the rotating shaft. A clamping protrusion is integrally formed perpendicularly on the side plate surface of the elastic plate close to the tube center line of the holding tube. The other side plate surface of the elastic plate is tightly fixed to the inner side wall one of the pressing sleeve; a sliding slot is provided on the side wall of the pressing tube, and the slot length direction of the sliding slot is the same as the tube length direction of the pressing tube. Two positioning holes are opened on the bottom wall of the sliding slot. The two positioning holes are respectively arranged close to the two ends of the sliding slot. The clamping protrusion is limited inside the sliding slot, and the clamping protrusion can be fitted into the positioning holes; the minimum gap between the inner side wall two of the pressing sleeve and the outer side wall of the holding tube is greater than the maximum length of the clamping protrusion. The clamping member can maintain the clamping state of the cell cryopreservation tube.

[0015] Preferably, the clamping member is in the shape of an arc-shaped plate, and anti-slip lines are integrally formed on the inner arc surface of the clamping member, and the anti-slip lines can abut against the cell cryopreservation tube. The two clamping members can reliably clamp the cell cryopreservation tube.

[0016] Preferably, the width of the roller is greater than or equal to the width of the abutting plate. The roller and the abutting plate can reliably abut against each other. Description of the Drawings

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0018] Figure 1 It is an overall axonometric diagram of a cell cryopreservation tube clamping device;

[0019] Figure 2 A partial axonometric view of a cell cryopreservation tube clamping device Figure 1 ;

[0020] Figure 3 A partial axonometric view of a cell cryopreservation tube clamping device Figure 2 .

[0021] In the figure:

[0022] 01 is a holding tube, 010 is a clearance hole, 011 is a long hole, 012 is an elastic plate, 013 is a clamping protrusion, 02 is a rotating shaft, 03 is a connecting rod, 04 is a clamping piece, 040 is an anti-slip pattern, 05 is a torsion spring, 06 is an abutment plate, 07 is a mounting frame, 08 is an insertion rod, 09 is a spring, 10 is a pressing tube, 100 is a slide groove, 101 is a positioning hole, 11 is a roller, and 12 is a pressing sleeve. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. 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.

[0024] The utility model discloses a cell freezing tube clamping device. The utility model designs a rotating shaft 02, a connecting rod 03, a clamping piece 04, an abutting plate 06, a moving piece and a roller 11 on the inner side of a holding tube 01. When the moving piece moves relative to the holding tube 01, two rollers 11 can push two abutting plates 06 to move synchronously and oppositely. When the abutting plates 06 move, the rotating shaft 02 can be driven to rotate, thereby realizing the mutual approach of the two clamping pieces 04, thereby realizing the clamping action of the cell freezing tube.

[0025] By designing the torsion spring 05, the two connecting rods 03 and the clamping member 04 always tend to move away from each other, and the two abutment plates 06 can always roll and abut against the two rollers 11, which is beneficial to the reset of the two clamping members 04 after completing the clamping action;

[0026] In the moving part, by designing the inserting rod 08, the spring 09 and the pressing tube 10, the two clamping parts 04 will not overly clamp the cryopreservation tube of cells, and at the same time, it is also beneficial to the reset of the pressing tube 10;

[0027] By designing the elastic plate 012, the clamping protrusion 013, the sliding groove 100, the positioning hole 101 and the pressing sleeve 12, after the two clamping parts 04 clamp the cryopreservation tube of cells, the above design ensures that the clamping parts 04 can maintain the clamping state of the cryopreservation tube of cells, and the user does not need to always press the pressing tube 10;

[0028] The clamping device has a simple and reliable structure. While ensuring reliable clamping of the cryopreservation tube of cells, the clamping force of the two clamping parts 04 will not be too large to avoid damaging the cryopreservation tube of cells; The clamping and releasing of the cryopreservation tube of cells are both relatively simple.

[0029] Embodiment

[0030] See the attached Figures 1-3 It is a schematic diagram of the overall and partial structures of an implementation manner of the present utility model. The present utility model specifically discloses a clamping device for a cryopreservation tube of cells to clamp the cryopreservation tube of cells. The cryopreservation tube clamp includes:

[0031] A holding tube 01, the holding tube 01 has openings at both ends and two mutually parallel rotating shafts 02 are rotatably supported inside it. The plane defined by the central axes of the two rotating shafts 02 with circular cross-sections is perpendicular to the tube center line of the holding tube 01, and the two rotating shafts 02 are symmetrically arranged with respect to the tube center line of the holding tube 01;

[0032] Clamping parts, the clamping parts include two connecting rods 03, two clamping parts 04 and two torsion springs 05. One end of each of the two connecting rods 03 with rectangular cross-sections is fixed to the outer side walls of the two rotating shafts 02 respectively, and the other ends of the two connecting rods 03 are located outside the holding tube 01 and are fixed to the two clamping parts 04 respectively; The two clamping parts 04 are symmetrically arranged with respect to the tube center line of the holding tube 01. The cryopreservation tube of cells can be clamped and limited between the two clamping parts 04, that is, the two clamping parts 04 can simultaneously abut against the outer side wall of the cryopreservation tube of cells or the outer side wall of the tube cap of the cryopreservation tube of cells, so as to realize the clamping of the cryopreservation tube of cells; The two torsion springs 05 are coaxially sleeved on the two rotating shafts 02 respectively. One end of each of the two torsion springs 05 is fixed to the two rotating shafts 02 respectively, and the other ends of the two torsion springs 05 are both fixed to the holding tube 01. By designing the torsion springs 05, the two clamping parts 04 always have a tendency to move away from each other;

[0033] Clamping drive assembly, the clamping drive assembly includes an abutting plate 06, a moving member and rollers 11. There are two abutting plates 06 with a rectangular cross-section. One end of each of the two abutting plates 06 is fixed to the outer side walls of the two rotating shafts 02. The plate surface of the abutting plate 06 is parallel to the axis line of the rotating shaft 02. The connecting rod 03, the rotating shaft 02 and the abutting plate 06 are arranged in sequence along the length direction of the holding tube 01; One end of the moving member is slidably arranged inside the holding tube 01. The sliding direction of the moving member relative to the holding tube 01 is the same as the length direction of the holding tube 01. Two mutually parallel rollers 11 are rotatably supported on the moving member. The two rollers 11 are symmetrically arranged with respect to the tube center line of the holding tube 01. The axis line of the rollers 11 is parallel to the axis line of the rotating shaft 02. The two rollers 11 are located between the two abutting plates 06. The outer side walls of the two rollers 11 are respectively in rolling contact with the plate surfaces of the two abutting plates 06. The maximum distance between the two rollers 11 is greater than the maximum distance between the two rotating shafts 02;

[0034] The user holds the holding tube 01 and manually presses the moving member. The moving member moves closer to the rotating shaft 02. During the movement of the moving member, the two rollers 11 are respectively in rolling contact with the two abutting plates 06. Since the maximum distance between the two rollers 11 is greater than the maximum distance between the two rotating shafts 02, therefore, during the movement of the moving member relative to the holding tube 01, the included angle between the two abutting plates 06 becomes larger. Correspondingly, the two clamping members 04 will approach each other, thereby realizing the clamping action.

[0035] Two long strip-shaped relief holes 010 are symmetrically formed on the tube wall of the holding tube 01. The length direction of the relief holes 010 is the same as the tube length direction of the holding tube 01. The width of the relief holes 010 is greater than the width of the abutting plate 06. One end of the abutting plate 06 away from the rotating shaft 02 can pass through the relief holes 010. The purpose of this design is to prevent the tube wall of the holding tube 01 from hindering the movement of the abutting plate 06 when the included angle between the two abutting plates 06 becomes larger.

[0036] The moving member includes a mounting bracket 07, a plug rod 08, a spring 09 and a pressing tube 10. The mounting bracket 07 is located inside the holding tube 01, and two rollers 11 are rotatably connected to the mounting bracket 07; One end of the plug rod 08 with a circular cross-sectional outer contour is fixed to the mounting bracket 07, and the plug rod 08 is coaxially arranged with the holding tube 01; The spring 09 is coaxially sleeved on the plug rod 08, and the length of the plug rod 08 is greater than the length of the spring 09; One end of the pressing tube 10 is open and the other end is closed and it is coaxially arranged with the holding tube 01. The open end of the pressing tube 10 is slidably arranged inside the pressing tube 10. The end of the plug rod 08 away from the mounting bracket 07 is slidably inserted into the pressing tube 10, and both ends of the spring 09 are tightly abutted against the mounting bracket 07 and the end wall of the open end of the pressing tube 10; This design can ensure that the clamping force of the two clamping members 04 on the cell cryopreservation tube will not be too large. When the pressing tube 10 is pressed too deep into the holding tube 01, due to the existence of the spring 09, the clamping force applied by the two clamping members 04 to the cell cryopreservation tube will not be too large, avoiding damaging the cell cryopreservation tube.

[0037] The maximum distance between the two rollers 11 is greater than the maximum outer contour diameter of the mounting bracket 07, and the outer diameter of the spring 09 is less than the maximum outer contour diameter of the mounting bracket 07; This design ensures that when the mounting bracket 07 approaches the rotating shaft 02, neither the mounting bracket 07 nor the spring 09 will interfere with the abutting plate 06, ensuring that the mounting bracket 07 can move smoothly.

[0038] More specifically, it further includes a pressing sleeve 12. The holding tube 01 is arranged inside the pressing sleeve 12. The pressing sleeve 12 has an inner side wall one and an inner side wall two that are oppositely arranged and parallel to each other;

[0039] A long hole 011 is opened on the side wall of the holding tube 01. The length direction of the long hole 011 is the same as the tube length direction of the holding tube 01. An elastic plate 012 is integrally formed on one hole end wall of the long hole 011. The length direction of the elastic plate 012 is the same as the tube length direction of the holding tube 01. The plate surface of the elastic plate 012 is perpendicular to the axis line of the rotating shaft 02. A clamping protrusion 013 is integrally formed perpendicularly on the side plate surface of the elastic plate 012 close to the tube center line of the holding tube 01. The other side plate surface of the elastic plate 012 is closely fixed to the inner side wall one of the pressing sleeve 12. The clamping protrusion 013 is arranged close to the closed end of the pressing tube 10;

[0040] A sliding groove 100 is provided on the side wall of the pressing tube 10. The groove length direction of the sliding groove 100 is the same as the tube length direction of the pressing tube 10. Two circular positioning holes 101 are opened on the groove bottom wall of the sliding groove 100. The two positioning holes 101 are respectively arranged close to both ends of the sliding groove 100. The clamping protrusion 013 is limited inside the sliding groove 100, and the clamping protrusion 013 can be fitted into the positioning hole 101;

[0041] The minimum clearance between the inner side wall two of the pressing sleeve 12 and the outer side wall of the holding tube 01 is greater than the maximum length of the clamping protrusion 013;

[0042] Manually press the pressing tube 10, causing the pressing tube 10 to approach the rotating shaft 02. The clamping protrusion 013 will disengage from one positioning hole 101. As the pressing tube 10 moves, the clamping protrusion 013 will be fitted into another positioning hole 101. At this time, the two clamping members 04 will complete the clamping action, and the distance between the two positioning holes 101 is the moving stroke of the pressing tube 10;

[0043] When it is necessary to release the cryotube clamped by the clamping member 04, the user presses the pressing sleeve 12 in a direction perpendicular to the inner side wall two. The pressing sleeve 12 will drive the clamping protrusion 013, causing the clamping protrusion 013 to disengage from the positioning hole 101 and be limited in the sliding groove 100. At the same time, due to the existence of the torsion spring 05 and the spring 09, the pressing tube 10 will reset upward.

[0044] The clamping member 04 can be an arc-shaped rod with a circular or polygonal cross-section. In this embodiment, the clamping member 04 is in the shape of an arc-shaped plate, and anti-slip patterns 040 are integrally formed on the inner arc surface of the clamping member 04. The anti-slip patterns 040 can be in tight contact with the cryotube, and this design ensures that the two clamping members 04 can reliably clamp the cryotube.

[0045] The width of the roller 11 is greater than or equal to the width of the abutting plate 06, ensuring reliable abutment between the outer side wall of the roller 11 and the abutting plate 06.

[0046] When this clamping device is in use:

[0047] The user holds the holding tube 01 by hand, and the thumb can press the closed end of the pressing tube 10 or the outer side wall of the pressing sleeve 12;

[0048] In the initial state, the clamping protrusion 013 is fitted in a positioning hole 101 near the open end of the pressing tube 10. The two clamping members 04 are in the initial state, and a cryotube can be inserted between the two clamping members 04;

[0049] When it is necessary to clamp the cryotube, first arrange the holding tube 01 vertically, and limit the cryotube to be clamped between the two clamping members 04; then the user presses the pressing tube 10 until the clamping protrusion 013 is fitted in a positioning hole 101 near the closed end of the pressing tube 10. At this time, there is no need to press the pressing tube 10 anymore, and the two clamping members 04 will permanently clamp the cryotube;

[0050] When it is necessary to release the clamped cell cryopreservation tube, the user presses the pressing sleeve 12 in a direction perpendicular to the inner wall two. The pressing sleeve 12 will drive the clamping protrusion 013, so that the clamping protrusion 013 disengages from a positioning hole 101 near the closed end of the pressing tube 10. At the same time, due to the existence of the torsion spring 05 and the spring 09, the pressing tube 10 will reset upward. At this time, the pressing sleeve 12 is released, and the clamping protrusion 013 will be reinstalled in a positioning hole 101 near the opening end of the pressing tube 10. At this time, the two clamping members 04 will move away from each other, and the cell cryopreservation tube located between the two clamping members 04 will fall off.

[0051] The various embodiments in this specification are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0052] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cell cryopreservation tube clamping device for clamping a cell cryopreservation tube, characterized in that: include: A gripping tube (01), the gripping tube (01) is open at both ends and has two parallel rotating shafts (02) rotatably supported on its inner side, the plane defined by the axis lines of the two rotating shafts (02) being perpendicular to the tube center line of the gripping tube (01); A clamping member, the clamping member comprises two connecting rods (03), a clamping member (04) and a torsion spring (05), one end of each of the two connecting rods (03) is fixed to the two rotating shafts (02), and the other ends of the two connecting rods (03) are located outside the holding tube (01) and are fixed to the two clamping members (04); the two clamping members (04) are symmetrically arranged about the tube center line of the holding tube (01), and the cell freezing tube can be clamped and limited between the two clamping members (04); the two torsion springs (05) are respectively sleeved on the two rotating shafts (02), one end of each of the two torsion springs (05) is fixed to the two rotating shafts (02), and the other ends of the two torsion springs (05) are fixed to the holding tube (01); A clamping drive assembly, the clamping drive assembly comprises an abutment plate (06), a moving part and a roller (11), two abutment plates (06) are provided, one end of each of the two abutment plates (06) is fixed to the two rotating shafts (02), the plate surface of the abutment plate (06) is parallel to the axis of the rotating shaft (02), the connecting rod (03), the rotating shaft (02) and the abutment plate (06) are arranged in sequence along the length direction of the holding tube (01); one end of the moving part is slidably arranged inside the holding tube (01), and the sliding direction of the moving part relative to the holding tube (01) is In the same direction as the length of the holding tube (01), two rollers (11) are rotatably supported on the moving part and are parallel to each other. The two rollers (11) are symmetrically arranged about the center line of the holding tube (01), and the axis of the rollers (11) is parallel to the axis of the rotating shaft (02). The two rollers (11) are located between the two abutment plates (06), and the outer side walls of the two rollers (11) respectively roll and abut against the plate surfaces of the two abutment plates (06), and the maximum distance between the two rollers (11) is greater than the maximum distance between the two rotating shafts (02).

2. A cell freezing tube clamping device according to claim 1, characterized in that: Two long strip-shaped clearance holes (010) are symmetrically provided on the tube wall of the holding tube (01), the length direction of the clearance holes (010) is the same as the tube length direction of the holding tube (01), the width of the clearance holes (010) is greater than the width of the abutment plate (06), and the end of the abutment plate (06) away from the rotating shaft (02) can pass through the clearance hole (010).

3. A cell freezing tube clamping device according to claim 1, characterized in that: The movable part comprises a mounting frame (07), an insertion rod (08), a spring (09) and a pressing tube (10); the mounting frame (07) is located on the inner side of the holding tube (01); the mounting frame (07) is rotatably connected to two rollers (11); one end of the insertion rod (08) is fixed to the mounting frame (07); the insertion rod (08) and the holding tube (01) are coaxially arranged; the spring (09) is coaxially sleeved on the insertion rod (08); the insertion rod (09) is coaxially sleeved on the insertion rod (08); the insertion rod (09) is coaxially sleeved on the insertion rod (08); the insertion rod (09) is coaxially sleeved on the insertion rod (08); the insertion rod (09) is coaxially sleeved on the insertion rod (09 ... 8) is longer than the length of the spring (09); the pressing tube (10) is open at one end and closed at the other end and is coaxially arranged with the holding tube (01); the open end of the pressing tube (10) is slidably arranged inside the pressing tube (10); the end of the insertion rod (08) away from the mounting frame (07) is slidably inserted into the pressing tube (10); and the two ends of the spring (09) are respectively pressed against the mounting frame (07) and the end wall of the open end of the pressing tube (10).

4. A cell freezing tube clamping device according to claim 3, characterized in that: The maximum distance between the two rollers (11) is greater than the maximum outer diameter of the mounting frame (07), and the outer diameter of the spring (09) is smaller than the maximum outer diameter of the mounting frame (07).

5. A cell freezing tube clamping device according to claim 3, characterized in that: It also includes a pressing sleeve (12), the holding tube (01) is arranged on the inner side of the pressing sleeve (12), and the pressing sleeve (12) has an inner side wall 1 and an inner side wall 2 which are arranged opposite to each other and parallel to each other; a long hole (011) is opened on the side wall of the holding tube (01), and the length direction of the long hole (011) is the same as the tube length direction of the holding tube (01); an elastic plate (012) is integrally formed on an end wall of the long hole (011), and the length direction of the elastic plate (012) is the same as the tube length direction of the holding tube (01); the plate surface of the elastic plate (012) is perpendicular to the axis of the rotating shaft (02); and a clamping protrusion is vertically integrally formed on the plate surface of the elastic plate (012) on one side close to the tube center line of the holding tube (01). (013), the other side plate surface of the elastic plate (012) is tightly fixed to the inner wall of the pressing sleeve (12); a slide groove (100) is provided on the side wall of the pressing tube (10), the groove length direction of the slide groove (100) is the same as the tube length direction of the pressing tube (10), and two positioning holes (101) are opened on the groove bottom wall of the slide groove (100), and the two positioning holes (101) are respectively arranged close to the two ends of the slide groove (100), and the clamping protrusion (013) is limited on the inner side of the slide groove (100), and the clamping protrusion (013) can be embedded in the positioning hole (101); the minimum gap between the inner wall of the pressing sleeve (12) and the outer wall of the holding tube (01) is greater than the maximum length of the clamping protrusion (013).

6. A cell freezing tube clamping device according to claim 1, characterized in that: The clamping piece (04) is in the shape of an arc plate, and an anti-skid pattern (040) is integrally formed on the inner arc surface of the clamping piece (04), and the anti-skid pattern (040) can be tightly pressed against the cell cryopreservation tube.

7. A cell freezing tube clamping device according to claim 1, characterized in that: The width of the roller (11) is greater than or equal to the width of the abutment plate (06).

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