Lifting mechanism and sample storage device

Abstract

The utility model provides a lifting mechanism and a sample storage device, the lifting mechanism comprises a driving assembly, a grappling hook and a mounting rack, the grappling hook is connected with the motion output end of the driving assembly and used for grabbing a basket, the grappling hook comprises a hook body used for bearing an extraction handle part, and the hook body is connected with the lifting handle part. The hook body protrudes upwards to be provided with a first protruding structure used for being matched with the handle part in an inserted mode, the driving assembly is fixed to the mounting frame, the mounting frame is provided with a guide wheel assembly capable of rotating, and the guide wheel assembly is used for guiding the lifting basket when the lifting basket moves vertically. According to the lifting mechanism and the sample storage device provided by the utility model, the hook body is provided with the first bulge structure which is matched with the lifting handle part of the lifting basket in an inserting manner, so that the lifting basket is more stably connected with the grabbing hook, and the lifting basket is not easy to fall off. A guide wheel assembly is arranged on the mounting frame and used for guiding the basket when the basket moves vertically, front-back and left-right shaking of the basket is reduced, and the stability of the basket during movement is improved.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration equipment technology, and more specifically, it relates to a lifting mechanism and a sample storage device. Background Technology

[0002] In the fields of biomedicine, clinical testing, and life science research, the safe storage and stable transport of biological samples (such as blood, tissues, and cells) are crucial for ensuring the accuracy of experimental data. Currently, the industry commonly uses standardized baskets as sample carriers, employing automated lifting mechanisms to achieve vertical transport and streamlined transfer of sample banks. However, in actual operation, it has been found that when the lifting mechanism grasps, vertically lifts, and translates the baskets, they are prone to tilting, shaking, vibration, and even detachment, leading to sample damage and equipment malfunction. Utility Model Content

[0003] The purpose of this utility model embodiment is to provide a lifting mechanism to solve the technical problem that the basket is prone to shaking during the lifting process in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a lifting mechanism for lifting a basket located in a freezing area, the basket having a lifting handle, and the lifting mechanism comprising:

[0005] The drive component is used to output vertical motion;

[0006] A gripping hook, connected to the motion output end of the drive assembly and used to grip the basket, the gripping hook including a hook body for supporting the extraction handle, the hook body having a first protruding structure for inserting and engaging with the handle; and

[0007] Mounting frame, the drive assembly is fixed to the mounting frame, and the mounting frame is provided with a self-rotating guide wheel assembly, the guide wheel assembly is used to guide the basket when the basket moves vertically.

[0008] Optionally, the grab hook includes a main body, two connecting parts, and two hook bodies. One end of each of the two connecting parts is connected to opposite sides of the main body, and the other end of each of the two connecting parts is connected to the two hook bodies. The main body, the two connecting parts, and the two hook bodies form a receiving space for the extraction handle to enter.

[0009] Optionally, both hook bodies are provided with the first protrusion structure, but the number of the first protrusion structures on the two hook bodies is different.

[0010] Optionally, the first protrusion structure is a positioning post.

[0011] Optionally, the guide wheel assembly includes two oppositely arranged guide wheel units for clamping the basket in a first direction.

[0012] Optionally, there may be multiple guide wheel assemblies, with at least two guide wheel assemblies arranged on opposite sides of the basket along a second direction, the first direction and the second direction being arranged at an angle.

[0013] Optionally, the lifting mechanism further includes a sample box retrieval assembly for removing sample boxes from the basket. The sample box retrieval assembly includes a sample box retrieval drive for outputting rotational motion, a transmission assembly for converting rotational motion into linear motion, and a sample box retrieval tray. The sample box retrieval tray has a tray hook protruding from one end for extending into the basket.

[0014] Optionally, the transmission assembly includes a connecting rod and a guide seat fixedly connected to the box retrieval tray. The guide seat has a guide groove with a length perpendicular to the movement direction of the box retrieval tray. One end of the connecting rod is rotatably connected to the movement output end of the box retrieval drive, and the other end of the connecting rod is slidably disposed in the guide groove.

[0015] This utility model also provides a sample storage device, including the above-mentioned lifting mechanism, and a basket disposed in the freezing area. The top of the basket has an extraction handle, and the extraction handle has a first through hole for the first protruding structure to pass through.

[0016] Optionally, the sidewall of the basket has a second protrusion structure, and the guide wheel assembly includes two oppositely arranged guide wheel units, which are respectively used to abut against opposite sides of the second protrusion structure.

[0017] The advantages of the lifting mechanism and sample storage device provided by this utility model are as follows: Compared with the prior art, the lifting mechanism of this utility model includes a drive assembly, a hook, and a mounting frame. The drive assembly is used to drive the hook to move up and down, thereby driving the basket to move up and down through the hook. The hook body is used to support the basket, and the hook body is provided with a first protrusion structure that engages with the basket's extraction handle, making the connection between the basket and the hook more stable and preventing the basket from falling off. The mounting frame is provided with a guide wheel assembly to guide the basket when it moves vertically, reducing the basket's swaying back and forth and left and right, and improving the stability of the basket during movement. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A three-dimensional structural diagram of the lifting mechanism provided in an embodiment of this utility model;

[0020] Figure 2 A three-dimensional structural diagram of the grab hook provided in an embodiment of this utility model;

[0021] Figure 3 for Figure 1 Enlarged view of the structure at point A in the middle;

[0022] Figure 4 A perspective structural view of the box-retrieving assembly provided in an embodiment of this utility model;

[0023] Figure 5 A perspective structural diagram of the basket provided in an embodiment of this utility model;

[0024] Figure 6 for Figure 5 A close-up view of the top of the middle basket.

[0025] The following are the labeling elements in the figure:

[0026] 10-Lifting mechanism; 11-Drive assembly; 111-Lifting drive component; 112-Sprocket; 113-Chain; 12-Hook; 120-Accommodation space; 121-Main body; 122-Connecting part; 123-Hook body; 124-First protrusion structure; 13-Guide wheel assembly; 131-Guide wheel unit; 14-Box retrieval assembly; 140-Transmission assembly; 141-Box retrieval drive component; 142-Connecting rod; 143-Box retrieval tray; 1431-Tray hook; 144-Guide seat; 1441-Guide groove; 15-Mounting frame; 20-Basket; 21-Retrieval handle; 211-First through hole; 22-Connecting neck; 23-Storage structure; 231-Second protrusion structure. Detailed Implementation

[0027] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In the fields of biomedicine, clinical testing, and life science research, the safe storage and stable transport of biological samples (such as blood, tissues, and cells) are crucial for ensuring the accuracy of experimental data. Currently, the industry commonly uses standardized baskets as sample carriers, employing automated lifting mechanisms to achieve vertical transport and streamlined transfer of sample banks. However, in actual operation, it has been found that when the lifting mechanism grasps, vertically lifts, and translates the baskets, they are prone to tilting, shaking, vibration, and even detachment, leading to sample damage and equipment malfunction.

[0032] To alleviate or solve the above technical problems, this utility model proposes a new lifting mechanism 10, including a drive assembly 11, a hook 12, and a mounting frame 15. The drive assembly 11 drives the hook 12 to move up and down. The hook 12 has a first protrusion structure 124 that passes through the extraction handle 21 of the basket 20, so that the basket 20 is stably connected to the hook 12. The mounting frame 15 is provided with a guide wheel assembly 13, which can guide the basket 20 during the lifting process, prevent the basket 20 from shaking, and improve the stability of the basket 20 during movement.

[0033] The lifting mechanism 10 provided in this embodiment of the present invention will now be described. The lifting mechanism 10 is used to lift the basket 20 located in the freezing area. The basket 20 has an extraction handle 21. The basket 20 contains a sample box, which stores frozen samples. When it is necessary to transfer or extract the frozen samples, the lifting mechanism 10 lifts the basket 20 containing the frozen samples upwards, then removes the corresponding sample box, and then extracts the frozen samples from the corresponding sample box.

[0034] Please refer to the following: Figure 1 and Figure 2 The upgraded organization 10 includes:

[0035] Drive component 11 is used to output vertical motion;

[0036] The hook 12 is connected to the motion output end of the drive assembly 11 and is used to grasp the basket 20. The hook 12 includes a hook body 123 for supporting the extraction handle 21. The hook body 123 has a first protruding structure 124 for inserting and engaging with the handle.

[0037] Mounting bracket 15, drive assembly 11 is fixed to mounting bracket 15, and mounting bracket 15 is provided with a self-rotating guide wheel assembly 13, which is used to guide the basket 20 when it moves vertically.

[0038] The drive assembly 11 is a power mechanism used to output vertical motion. The specific structure of the drive assembly 11 is not limited here; any drive assembly 11 capable of outputting linear motion is suitable for this embodiment. The drive assembly 11 has a fixed end and a motion output end. The fixed end can be a housing structure of the drive assembly 11, etc. When the drive assembly 11 is working, the fixed end remains stationary, and the motion output end outputs linear motion.

[0039] The hook 12 is connected to the motion output end of the drive assembly 11. The hook 12 is used to drive the basket 20 to move, and the hook 12 and the basket 20 rise or fall synchronously. Specifically, the hook 12 includes a hook body 123, on which a first protrusion structure 124 is provided. The first protrusion structure 124 is arranged to protrude upward. After the hook 12 grabs the basket 20, the extraction handle 21 of the basket 20 abuts against the hook body 123, and the hook body 123 supports the extraction handle 21. The first protrusion structure 124 is arranged to pass through the extraction handle 21, thereby driving the basket 20 to move up and down through the hook 12. Moreover, under the action of the first protrusion structure 124, the basket 20 is not easy to slip off the hook 12, ensuring the safety of the basket 20 during the lifting and lowering movement, and to a certain extent, making the lifting and lowering of the basket 20 more stable.

[0040] Mounting bracket 15 is the main mounting structure of lifting mechanism 10. Drive assembly 11 is fixed on mounting bracket 15. It can be understood that the fixed end of drive assembly 11 is fixed on mounting bracket 15. Guide wheel assembly 13 is provided on mounting bracket 15. During the lifting and lowering of basket 20, guide wheel assembly 13 is in close contact with basket 20 and rolls with basket 20 as it rises and falls, thus guiding basket 20 and preventing basket 20 from swaying in the front-back and left-right directions.

[0041] The lifting mechanism 10 in the above embodiment includes a drive assembly 11, a grab hook 12, and a mounting bracket 15. The drive assembly 11 drives the grab hook 12 to move up and down, thereby driving the basket 20 to move up and down. The hook body 123 of the grab hook 12 supports the basket 20, and the hook body 123 has a first protrusion structure 124 that engages with the extraction handle 21 of the basket 20, making the connection between the basket 20 and the grab hook 12 more stable and preventing the basket 20 from falling off. The mounting bracket 15 is equipped with a guide wheel assembly 13, which guides the basket 20 when it moves vertically, reducing the swaying of the basket 20 in all directions and improving the stability of the basket 20 during movement.

[0042] Please refer to some embodiments of this utility model. Figure 2 The grab hook 12 includes a main body 121, two connecting parts 122, and two hook bodies 123. One end of each connecting part 122 is connected to opposite sides of the main body 121, and the other end of each connecting part 122 is connected to the two hook bodies 123. The main body 121, the two connecting parts 122, and the two hook bodies 123 form a receiving space 120 for the extraction handle 21 to enter. Understandably, one hook body 123, one connecting part 122, the main body 121, the other connecting part 122, and the other hook body 123 are sequentially bent and connected, making the receiving space 120 a semi-enclosed space, which makes the basket 20 more stable when located within the receiving space 120.

[0043] By setting the hook 12 as a main body 121, two connecting parts 122 and two hook bodies 123, and forming a receiving space 120, after the hook 12 grabs the basket 20, the extraction handle part 21 of the basket 20 is located inside the receiving space 120, and the basket 20 can be grabbed by the hook 12. This makes grabbing more convenient. Moreover, this type of hook 12 does not need to perform opening and closing movements. It is a rigid structure and its stability is stronger when supporting the basket 20.

[0044] In some embodiments, please refer to Figure 5 and Figure 6The handle 21 is a sheet-like structure or a plate-like structure with a certain thickness. When it is necessary to grab the basket 20, the basket 20 moves in a straight line along the horizontal direction into the receiving space 120 of the grab hook 12, or the basket 20 rotates around the vertical direction and moves into the receiving space 120 of the grab hook 12.

[0045] Optionally, please refer to Figure 5 and Figure 6 The basket 20 also includes a storage structure 23 and a connecting neck 22 connecting the storage structure 23 and the retrieval handle 21. The storage structure 23 is used to store cryogenic boxes. In the hook 12, the sides of the two hook bodies 123 away from the connecting part 122 are spaced apart to provide clearance for the connecting neck 22. After the hook 12 grabs the basket 20, the retrieval handle 21 is located inside the receiving space 120, and the connecting neck 22 is located between the two hook bodies 123. In this way, the grabbing of the basket 20 by the hook 12 is not affected, and the retrieval handle 21 can be fixed to the storage structure 23.

[0046] Please refer to some embodiments of this utility model. Figure 2 Both hook bodies 123 are provided with a first protrusion structure 124, but the number of the first protrusion structures 124 on the two hook bodies 123 is different. That is to say, the number of the first protrusion structures 124 on one hook body 123 is different from that on the other hook body 123.

[0047] By setting the number of first protrusions 124 on the two hook bodies 123 to be different, the basket 20 can only cooperate with the grabbing hook 12 in one direction. If the basket 20 is accidentally placed upside down, the grabbing hook 12 will not be able to grab the basket 20, and an alarm can be sent to the host computer. If the basket 20 can still be grabbed after being placed upside down, the sample box inside the basket 20 may not be able to be retrieved in subsequent operations.

[0048] In some embodiments, one hook body 123 has two first protrusion structures 124, and the other hook body 123 has one first protrusion structure 124.

[0049] In other embodiments, both hook bodies 123 are provided with a first protrusion structure 124. The arrangement of the first protrusion structures 124 on the two hook bodies 123 may differ, which can also serve to prevent the basket 20 from being mistakenly opened. In this embodiment, the number of first protrusion structures 124 on the two hook bodies 123 is the same; for example, both have three first protrusion structures 124. In one hook body 123, the three first protrusion structures 124 are arranged in a row, while in the other hook body 123, the three first protrusion structures 124 are arranged in a triangle. In this embodiment, the number of first protrusion structures 124 on the two hook bodies 123 may also be different.

[0050] In other embodiments, both hook bodies 123 are provided with a first protrusion structure 124, and the number of first protrusion structures 124 on both hook bodies 123 is the same. In this way, the gripping hook 12 has a left-right symmetrical structure, which makes the gripping hook 12 easier to design and reduces the production cost.

[0051] In some embodiments of this utility model, the first protrusion structure 124 and the hook body 123 are formed separately, and the first protrusion structure 124 can be fixed to the hook body 123 by screws or the like. Alternatively, the first protrusion structure 124 and the hook body 123 are formed integrally.

[0052] Please refer to some embodiments of this utility model. Figure 2 The first protruding structure 124 serves as a positioning post, making it a cylindrical structure that allows it to pass more easily through the extraction handle 21 of the basket 20. It should be noted that the positioning post is not necessarily a cylinder; it can also be a square prism, a triangular prism, etc.

[0053] In some embodiments, the cross-section of the first protrusion structure 124 is circular, square, triangular, pentagonal, or the like.

[0054] Please refer to some embodiments of this utility model. Figure 3 The guide wheel assembly 13 includes two opposing guide wheel units 131, which clamp the basket 20 in a first direction. The guide wheel units 131 are rotatable relative to the mounting frame 15. During the lifting and lowering of the basket 20, the two guide wheel units 131 are respectively positioned on both sides of the basket 20 to clamp the basket 20 in the first direction, thereby preventing the basket 20 from swaying in the first direction.

[0055] By setting the guide wheel assembly 13 as two oppositely arranged guide wheel units 131, the basket 20 can be clamped in the first direction to prevent the basket 20 from swaying in the first direction during the lifting process, thereby improving the stability of the basket 20 when it is raised or lowered.

[0056] In some embodiments, please refer to Figure 5 and Figure 6 The basket 20 is provided with a second protrusion structure 231, and the two opposite sides of the second protrusion structure 231 abut against two guide wheel units 131 respectively.

[0057] In some embodiments, the pressing direction between the guide wheel unit 131 and the basket 20 (which is perpendicular to the rotation axis of the guide wheel unit 131) is set at an acute angle to the first direction, and the two guide wheel units 131 abut against the opposite sides of the basket 20 in a figure-eight shape. Correspondingly, the opposite sides of the second protrusion structure 231 are two inclined surfaces, arranged in a figure-eight shape.

[0058] In some embodiments, the pressing direction between the guide wheel unit 131 and the basket 20 (which is perpendicular to the rotation axis of the guide wheel unit 131) is parallel to the first direction, making the pressing between the guide wheel unit 131 and the second protrusion structure 231 more stable and less prone to slippage.

[0059] In some embodiments, please refer to Figure 1 The bottom of the mounting bracket 15 is provided with an opening, and the basket 20 enters the interior of the mounting bracket 15 through the opening. The guide wheel assembly 13 can be provided on the inner wall of the opening.

[0060] In some embodiments, please refer to Figure 1 and Figure 3 There are multiple guide wheel assemblies 13, with at least two guide wheel assemblies 13 arranged on opposite sides of the basket 20 along a second direction, with the first and second directions forming an angle. The first and second directions forming an angle can be understood as meaning that they are not in the same direction and are not 180 degrees apart. Specifically, one or more guide wheel assemblies 13 can be arranged on one side of the basket 20 along the second direction, and one or more guide wheel assemblies 13 can also be arranged on the other side of the basket 20 along the second direction.

[0061] Guide wheel assemblies 13 are provided on both sides of the basket 20 in the second direction to limit the basket 20 in the second direction and prevent the basket 20 from shaking in the second direction.

[0062] Optionally, both the first and second directions are horizontal and perpendicular to the vertical direction, which can further improve the limitation of the horizontal sway of the basket 20 and improve the stability of the movement of the basket 20.

[0063] Optionally, the first and second directions are perpendicular to each other, which can limit the basket 20 in the front-back and left-right directions to prevent the basket 20 from swaying horizontally.

[0064] Please refer to some embodiments of this utility model. Figure 4The lifting mechanism 10 also includes a sample box retrieval assembly 14 for removing sample boxes from the basket 20. The sample box retrieval assembly 14 includes a sample box retrieval drive 141 for outputting rotational motion, a transmission assembly 140 for converting rotational motion into linear motion, and a sample box retrieval tray 143. One end of the sample box retrieval tray 143, which extends into the basket 20, has a protruding tray hook 1431. The sample box retrieval assembly 14 is used to remove sample boxes from the basket 20, which typically contains multiple sample boxes arranged from top to bottom. The motion input end of the transmission assembly 140 is connected to the motion output end of the sample box retrieval drive 141, and the motion output end of the transmission assembly 140 is connected to the sample box retrieval tray 143, allowing the sample box retrieval tray 143 to extend into the basket 20 and hook the sample box using the tray hook 1431. As the sample box retrieval tray 143 is removed from the basket 20, the sample box is correspondingly pulled out of the basket 20.

[0065] By setting up a sample retrieval tray 143 and a tray hook 1431 on the sample retrieval tray 143, the sample retrieval tray 143 can be extended into the basket 20 and the sample box can be hooked out. This simplifies the structure of the sample retrieval assembly 14, and the spacing between two adjacent sample boxes in the basket 20 can also be set smaller.

[0066] When retrieving a sample box, the drive assembly 11 first moves the basket 20 to a predetermined position. Then, the retrieval drive 141 and the transmission assembly 140 move the retrieval tray 143 to the inside of the basket 20 (between two adjacent sample boxes). The drive assembly 11 lowers the basket 20, causing the target sample box to descend. Finally, the retrieval tray 143 moves in the opposite direction, and the tray hook 1431 pushes the sample box outward, thereby retrieving the sample box.

[0067] In some embodiments, the cassette drive 141 is a motor capable of outputting rotational motion.

[0068] Please refer to some embodiments of this utility model. Figure 4The transmission assembly 140 includes a connecting rod 142 and a guide seat 144 fixedly connected to the box-retrieving tray 143. The guide seat 144 has a guide groove 1441 with a length perpendicular to the direction of movement of the box-retrieving tray 143. One end of the connecting rod 142 is rotatably connected to the motion output end of the box-retrieving drive 141, and the other end of the connecting rod 142 is slidably disposed in the guide groove 1441. The connecting rod 142 is used to transmit the rotation of the box-retrieving drive 141 to the box-retrieving tray 143. When the box-retrieving drive 141 rotates, the connecting rod 142 rotates accordingly. By setting a guide groove 1441 on the guide seat 144, the movement of the end of the connecting rod 142 away from the box-retrieving drive 141 can be decomposed into a third direction (movement parallel to the length direction of the guide groove 1441) and a fourth direction (movement direction of the box-retrieving tray 143). This allows the connecting rod 142 to slide in the guide groove 1441 while driving the box-retrieving tray 143 to move along the fourth direction, thereby realizing the push-pull movement of the box-retrieving tray 143.

[0069] By setting up the connecting rod 142 and the guide groove 1441, the rotation of the sample box retrieval drive 141 can be converted into the linear motion of the sample box retrieval tray 143, thereby realizing the push-pull retrieval and placement of the sample box.

[0070] Please refer to some embodiments of this utility model. Figure 1 The drive assembly 11 includes a lifting drive 111, a chain 113, and multiple sprockets 112. The chain 113 is wound around the multiple sprockets 112, and the hook 12 is fixed to the chain 113. The lifting drive 111 drives one of the sprockets 112 to rotate, causing the chain 113 to translate. The other sprockets 112 also rotate accordingly, and the lifting of the hook 12 is driven by the translation of the chain 113. In other embodiments, the drive assembly 11 can also achieve linear motion output in other ways.

[0071] Please see Figure 1 , Figure 4 and Figure 5 This utility model also provides a sample storage device, which includes the lifting mechanism 10 in any of the above embodiments, and a basket 20 disposed in the freezing area. The top of the basket 20 has an extraction handle 21, and the extraction handle 21 has a first through hole 211 through which a first protrusion structure 124 passes. When it is necessary to remove the corresponding basket 20 from the freezing area, the drive component 11 of the lifting mechanism 10 operates, causing the grab hook 12 to descend to the extraction handle 21 of the basket 20. The basket 20 moves linearly or rotates, causing the extraction handle 21 to enter the interior of the grab hook 12. Then, the drive component 11 operates to lift the basket 20, the first protrusion structure 124 passes through the first through hole 211, and the grab hook 12 continues to move upward, moving the basket 20 to a predetermined height for subsequent sample retrieval operations.

[0072] The sample storage device provided by this utility model adopts the aforementioned lifting mechanism 10. The lifting mechanism 10 includes a drive assembly 11, a gripper hook 12, and a mounting frame 15. The drive assembly 11 drives the gripper hook 12 to move up and down, thereby driving the basket 20 to move up and down. The hook body 123 of the gripper hook 12 supports the basket 20, and the hook body 123 is provided with a first protrusion structure 124 that engages with the extraction handle 21 of the basket 20, making the connection between the basket 20 and the gripper hook 12 more stable and preventing the basket 20 from falling off. The mounting frame 15 is provided with a guide wheel assembly 13, which guides the basket 20 when it moves vertically, reducing the swaying of the basket 20 in all directions and improving the stability of the basket 20 during movement.

[0073] Please refer to some embodiments of this utility model. Figure 5 and Figure 6 The side wall of the basket 20 has a second protrusion structure 231. The guide wheel assembly 13 includes two oppositely arranged guide wheel units 131, which are respectively used to abut against the opposite sides of the second protrusion structure 231. The guide wheel units 131 are capable of rotating relative to the mounting frame 15. During the lifting and lowering of the basket 20, the two guide wheel units 131 abut against the opposite sides of the second protrusion structure 231. As the basket 20 is lifted and lowered, the guide wheel units 131 roll accordingly, clamping the basket 20. This prevents the basket 20 from swaying in the horizontal direction.

[0074] In some embodiments of this invention, the sample storage device further includes a liquid nitrogen storage structure with a freezing zone inside, where baskets 20 are placed. Multiple baskets 20 are arranged sequentially along the circumference. The liquid nitrogen storage structure 23 also includes a rotating mechanism that drives the multiple baskets 20 to rotate circumferentially, allowing the corresponding baskets 20 to face the lifting mechanism 10, thereby facilitating the lifting mechanism 10's gripping and lifting of the baskets 20.

[0075] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lifting mechanism for lifting a basket located in a freezing area, said basket having a retrieval handle portion, characterised in that, include: The drive component is used to output vertical motion; A gripping hook, connected to the motion output end of the drive assembly and used to grip the basket, the gripping hook including a hook body for supporting the extraction handle, the hook body having a first protruding structure for inserting and engaging with the handle; and Mounting frame, the drive assembly is fixed to the mounting frame, and the mounting frame is provided with a self-rotating guide wheel assembly, the guide wheel assembly is used to guide the basket when the basket moves vertically.

2. The lifting mechanism of claim 1, wherein, The grab hook includes a main body, two connecting parts, and two hook bodies. One end of each of the two connecting parts is connected to opposite sides of the main body, and the other end of each of the two connecting parts is connected to the two hook bodies. The main body, the two connecting parts, and the two hook bodies form a receiving space for the extraction handle to enter.

3. The lifting mechanism of claim 2, wherein, Both hook bodies are provided with the first protrusion structure, but the number of the first protrusion structures on the two hook bodies is different.

4. The lifting mechanism of claim 1, wherein, The first protrusion is a positioning post.

5. The lifting mechanism of claim 1, wherein, The guide wheel assembly includes two oppositely arranged guide wheel units, which are used to clamp the basket in a first direction.

6. The lifting mechanism of claim 5, wherein, The number of guide wheel assemblies is multiple, and at least two of the guide wheel assemblies are arranged on opposite sides of the basket along the second direction, with the first direction and the second direction forming an angle.

7. The lifting mechanism of claim 1, wherein, The lifting mechanism further includes a sample box retrieval assembly for removing sample boxes from the basket. The sample box retrieval assembly includes a sample box retrieval drive for outputting rotational motion, a transmission assembly for converting rotational motion into linear motion, and a sample box retrieval tray. The sample box retrieval tray has a tray hook protruding from one end for extending into the basket.

8. The lifting mechanism of claim 7, wherein, The transmission assembly includes a connecting rod and a guide seat fixedly connected to the box retrieval tray. The guide seat has a guide groove with a length perpendicular to the movement direction of the box retrieval tray. One end of the connecting rod is rotatably connected to the movement output end of the box retrieval drive component, and the other end of the connecting rod is slidably disposed in the guide groove.

9. A sample storage device, characterized by, The lifting mechanism, including any one of claims 1-8, further includes a basket disposed in the freezing area, the top of the basket having an extraction handle portion, the extraction handle portion having a first through hole for the first protruding structure to pass through.

10. The sample storage device of claim 9, wherein: The side wall of the basket has a second protrusion structure, and the guide wheel assembly includes two guide wheel units arranged opposite to each other, which are respectively used to abut against the opposite sides of the second protrusion structure.

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