A cryogenic rack lifting device for biological liquid nitrogen tanks
Patent Information
- Application Number
- CN202522501478.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-11-25
AI Technical Summary
[0005]本申请的目的是针对现有技术的不足之处，提供一种用于生物液氮罐的冻存架提升装置，以解决现有技术中在实际应用中无非两种方式，一种是装置与液氮罐封台固定集成，这种方式会导致设备绑定严重、利用率极低，且受限于封台固定结构，装置无法移动至其他液氮罐旁作业，只能进行一对一服务；另一种是单一摆脱封台绑定的提升装置，虽然它能应对上述问题，但装置本身仅能依靠自身底座支撑，在面对不同重量冻存架进行提升时，可能会因受力不均而发生偏移晃动，存在安全隐患的问题
当需要提升相应生物液氮罐内的冻存架时，人员可利用制动万向轮推动装置主体移动，使液氮罐处于主体的中部范围，位置确定后通过脚刹辅助稳定，随后人员启动第一伺服电机，使第一锥形齿轮转动，进而带动与之啮合的第二锥形齿轮带着正反丝杆转动，与正反丝杆相作用的一对丝杆滑套会带着各自固设的连接装架，配合支撑导块与导槽的支撑导向进行相对位移，由于一对连接装架内侧相对处分别设有两对限位夹柱，且各自一对限位夹柱的间距能同时适配大小号生物液氮罐的中轴线两侧《区别仅在于与中轴线两侧的距离远近》，因此在上述位移结构的作用下，两对限位夹柱可分别贴合夹持于生物液氮罐的两侧，再配合限位夹柱上下段周边套设的橡胶防滑套，即可实现对罐体的夹持绑定，进而互相提高装置主体与对应生物液氮罐之间的稳定性。
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Figure CN224900727U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of biological liquid nitrogen tanks, and more specifically, to a cryopreservation rack lifting device for biological liquid nitrogen tanks. Background Technology
[0002] Liquid nitrogen tanks using liquid nitrogen at -196℃ as a cooling source can ensure that the storage temperature of the samples is always kept at -180℃, which extends the life of the samples and ensures their safety. During storage, biological samples are generally placed on cryopreservation racks, and then the cryopreservation racks are placed into large liquid nitrogen tanks. For the initial placement and subsequent storage and retrieval, cryopreservation rack lifting devices are required.
[0003] Existing cryopreservation rack lifting devices for biological liquid nitrogen tanks essentially fall into two categories in practical applications. One is a device that is fixedly integrated with the liquid nitrogen tank platform. This method results in severe equipment binding, extremely low utilization, and, due to the fixed platform structure, the device cannot be moved to work next to other liquid nitrogen tanks, and can only provide one-to-one service. The other is a separate lifting device that is not bound to the platform. Although it can address the above problems, the device itself can only rely on its own base for support. When lifting cryopreservation racks of different weights, it may shift and sway due to uneven force, posing a safety hazard. Utility Model Content
[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.
[0005] The purpose of this application is to address the shortcomings of existing technologies by providing a cryopreservation rack lifting device for biological liquid nitrogen tanks. This addresses the two main approaches used in practical applications of existing technologies: one is to integrate the device with the liquid nitrogen tank platform, which results in severe equipment binding, extremely low utilization, and, due to the fixed platform structure, the device cannot be moved to work next to other liquid nitrogen tanks, limiting it to one-to-one service; the other is a separate lifting device that is independent of the platform. While this addresses the aforementioned issues, the device itself relies solely on its own base for support, and when lifting cryopreservation racks of varying weights, it may shift and sway due to uneven force, posing a safety hazard.
[0006] To achieve the above objectives, this application provides the following technical solution: A cryopreservation rack lifting device for biological liquid nitrogen tanks includes: a main body, with braked casters at the bottom and a top mounting frame fixed at the top; a stabilizing clamping mechanism is provided at the middle and front of the lower section of the main body; a lifting mechanism is installed inside the top mounting frame; the stabilizing clamping mechanism includes a preset groove, which is located at the lower front end of the main body; a clamping assembly is provided inside and at the front of the preset groove; the clamping assembly includes two pairs of limiting clamps, and rubber anti-slip sleeves are fitted on both sides of the middle section of each pair of limiting clamps.
[0007] Furthermore, the clamping assembly includes a first servo motor, which is mounted in the middle of a preset slot. A first bevel gear is fixed around the output end of the first servo motor, and a second bevel gear meshes with one side of the first bevel gear. A positive and negative lead screw is fixed in the middle of the second bevel gear, and lead screw sleeves are screwed on both sides of the middle section of the positive and negative lead screws. A connecting bracket is fixed at the inner end of a pair of lead screw sleeves, and a support guide block is fixed below one section of a pair of connecting brackets. A guide groove is opened on one side of the upper surface of the bottom of the main body, and limiting clamping posts are fixed on both sides of the opposite ends of the pair of connecting brackets.
[0008] Furthermore, the support guide block at the bottom of the connecting frame and the guide groove are connected by a support guide connection.
[0009] Furthermore, the limiting clamp and the rubber anti-slip sleeve are connected in a detachable, fitted manner.
[0010] Furthermore, the lifting mechanism includes a slot, which is located at the bottom of one side of the top mounting frame. Guide rails are fixed on both sides of the bottom of the top mounting frame, and a guide frame is slidably mounted above the guide rails. A lifting component is mounted above the guide frame, and an adjustment component is mounted in the middle of the lower part of the guide frame.
[0011] Furthermore, the lifting assembly includes a second servo motor, which is mounted on one side above the guide frame. The output end of the second servo motor is connected to a take-up roller. A through slot is provided in the middle of one side of the guide frame, and fixing blocks are fixed on both sides of the through slot above the guide frame. A guide roller is provided on the inner side of a pair of fixing blocks. A take-up chain is wound around the periphery of the take-up roller and the surface of the guide roller, and a lifting member is connected to the end of the take-up chain.
[0012] Furthermore, the adjustment component includes a reserved slot, which is located in the lower middle part of the guide frame. Racks are provided on both sides above the reserved slot. A fixing frame is fixed on one side above the bottom of the top mounting frame, and a double-headed motor is installed in the middle of the fixing frame. Gears that mesh with racks are fixed around the two output ends of the double-headed motor.
[0013] The beneficial effects of this application are as follows: When it is necessary to lift the cryopreservation rack inside the corresponding biological liquid nitrogen tank, personnel can use the braked casters to move the main body of the device, positioning the liquid nitrogen tank in the middle of the main body. After the position is determined, the foot brake is used for stabilization. Then, the first servo motor is started, causing the first bevel gear to rotate, which in turn drives the second bevel gear meshing with it, rotating the forward and reverse lead screws. The pair of lead screw sleeves interacting with the forward and reverse lead screws will carry their respective fixed connecting brackets, and with the support guide blocks and guide grooves, they will move relative to each other. Since there are two pairs of limiting clamps on opposite sides of the inner side of each pair of connecting brackets, and the spacing between each pair of limiting clamps can simultaneously adapt to both sides of the central axis of both large and small biological liquid nitrogen tanks (the only difference is the distance from the central axis), under the action of the above displacement structure, the two pairs of limiting clamps can respectively fit and clamp the two sides of the biological liquid nitrogen tank. With the help of the rubber anti-slip sleeves around the upper and lower sections of the limiting clamps, the tank can be clamped and bound, thereby improving the stability between the main body of the device and the corresponding biological liquid nitrogen tank.
[0014] Personnel can adjust the position of the lifting components according to the position of the cryogenic rack in the center of the tank. The specific adjustment method is as follows: personnel start the dual-head motor, which rotates the gears at both ends, thereby driving the racks that mesh with the two gears to move. The racks will carry the guide frame and the lifting assembly above it, and adjust the horizontal dimension in conjunction with the guiding action of the guide rail. This indirectly adjusts the position of the lifting components in the lifting assembly. Then, personnel start the second servo motor, which rotates the winding roller. The winding chain around the winding roller will gradually loosen and, guided by the position of the guide roller, bring the lifting components at the end down steadily. Finally, personnel assist the lifting components to contact the cryogenic rack lifting area, and the lifting operation can be carried out. Attached Figure Description
[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.
[0016] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.
[0017] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of the present application; Figure 2 This is a partial three-dimensional structural diagram of the stabilizing clamping mechanism of this application; Figure 3 This is a schematic diagram of the internal structure of the top mounting frame in this application; Figure 4 For the purposes of this application Figure 3 Schematic diagram of the structure at point A in the middle.
[0018] Figure label: 1. Main body; 2. Braking caster wheel; 3. Top mounting frame; 4. Stabilizing clamping mechanism; 41. Pre-set slot; 42. Clamping assembly; 421. First servo motor; 422. First bevel gear; 423. Second bevel gear; 424. Positive and negative lead screws; 425. Lead screw sleeve; 426. Connecting frame; 427. Support guide block; 428. Guide groove; 429. Limiting clamp; 43. Rubber anti-slip sleeve; 5. Lifting mechanism; 51. Slot; 52. Guide rail; 53. Guide frame; 54. Lifting assembly; 541. Second servo motor; 542. Take-up roller; 543. Take-up chain; 544. Fixing block; 545. Guide roller; 546. Lifting component; 547. Through slot; 55. Adjustment assembly; 551. Reserved slot; 552. Rack; 553. Fixing frame; 554. Dual-head motor; 555. Gear. Detailed Implementation
[0019] The following is a detailed description of a cryopreservation rack lifting device for a biological liquid nitrogen tank provided in this application, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this application.
[0020] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.
[0021] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.
[0022] The present application will now be described in detail with reference to the accompanying drawings and embodiments.
[0023] Reference Figure 1-4As shown, this utility model provides a cryopreservation rack lifting device for biological liquid nitrogen tanks, comprising: a main body 1, with braked universal wheels 2 at the bottom end of the main body 1, and a top mounting frame 3 fixedly mounted on the top of the main body 1; a stabilizing clamping mechanism 4 is provided at the middle and front of the lower section of the main body 1; a lifting mechanism 5 is installed inside the top mounting frame 3; the stabilizing clamping mechanism 4 includes a preset groove 41, which is located at the lower front end of the main body 1; a clamping assembly 42 is provided inside and at the front of the preset groove 41; the clamping assembly 42 includes a first servo motor 421, which is mounted at the middle of the preset groove 41; and a clamping component 42 is fixed around the output end of the first servo motor 421. A first bevel gear 422 is provided, and a second bevel gear 423 meshes with one side of the first bevel gear 422. A positive and negative lead screw 424 is fixedly provided in the middle of the second bevel gear 423, and lead screw sleeves 425 are screwed on both sides of the middle section of the positive and negative lead screw 424. A connecting bracket 426 is fixedly provided at the inner end of the pair of lead screw sleeves 425, and a support guide block 427 is fixedly provided below one section of the pair of connecting brackets 426. A guide groove 428 is provided on one side of the upper surface of the bottom of the main body 1. The support guide block 427 at the bottom end of the connecting bracket 426 and the guide groove 428 are connected for support and guidance. Limiting clamps 429 are fixedly provided on both sides of the opposite ends of the pair of connecting brackets 426. The column 429 and the rubber anti-slip sleeve 43 are connected in a detachable, fitted manner. Rubber anti-slip sleeves 43 are fitted on both sides of the middle section of each pair of limiting clamping columns 429. When it is necessary to lift the cryopreservation rack inside the corresponding biological liquid nitrogen tank, personnel can use the brake casters 2 to push the main body 1 of the device to move, positioning the liquid nitrogen tank within the middle range of the main body 1. After the position is determined, stability is achieved with the aid of the foot brake. Subsequently, personnel start the first servo motor 421, causing the first bevel gear 422 to rotate, which in turn drives the second bevel gear 423, which meshes with it, to rotate the forward and reverse lead screws 424. A pair of lead screw sleeves 425, which interact with the forward and reverse lead screws 424, will rotate along their respective fixed connecting brackets 426. With the support guide block 427 and guide groove 428 supporting and guiding, relative displacement is achieved. Since two pairs of limiting clamps 429 are respectively provided on the inner side of the pair of connecting brackets 426, and the spacing of each pair of limiting clamps 429 can simultaneously adapt to both sides of the central axis of the large and small biological liquid nitrogen tanks (the only difference is the distance from the central axis), under the action of the above displacement structure, the two pairs of limiting clamps 429 can respectively fit and clamp the two sides of the biological liquid nitrogen tank. With the rubber anti-slip sleeves 43 sleeved around the upper and lower sections of the limiting clamps 429, the tank body can be clamped and bound, thereby improving the stability between the main body of the device 1 and the corresponding biological liquid nitrogen tank.
[0024] Secondly, the lifting mechanism 5 includes a slot 51, which is located at the bottom of one side of the top mounting frame 3. Guide rails 52 are fixed to both sides of the bottom of the top mounting frame 3, and a guide frame 53 slides above the guide rails 52. A lifting assembly 54 is mounted above the guide frame 53. The lifting assembly 54 includes a second servo motor 541, which is mounted on the upper side of the guide frame 53. The output end of the second servo motor 541 is connected to a take-up roller 542. A through slot 5 is located in the middle of one side of the guide frame 53. 47. Fixing blocks 544 are fixed on both sides of the through slot 547 above the guide frame 53. Guide rollers 545 are provided inside the pair of fixing blocks 544. A take-up chain 543 is wound around the periphery of the take-up roller 542 and the surface of the guide roller 545. A lifting member 546 is connected to the end of the take-up chain 543. An adjustment assembly 55 is installed in the lower center of the guide frame 53. The adjustment assembly 55 includes a reserved slot 551, which is located in the lower center of the guide frame 53. Toothed racks 55 are provided on both sides above the reserved slot 551. 52. A fixed frame 553 is fixedly installed on one side above the bottom of the top mounting frame 3. A double-headed motor 554 is installed in the middle of the fixed frame 553. Gears 555 meshing with racks 552 are fixedly installed around the two output ends of the double-headed motor 554. Personnel can adjust the position of the lifting component 546 according to the position of the freezing rack in the center of the tank. The specific adjustment method is as follows: personnel start the double-headed motor 554, causing the gears 555 at both ends to rotate, thereby driving the racks 552 that mesh with the two gears 555 to move. The guide frame 53 and the lifting assembly 54 above it will be used to adjust the horizontal dimensions with the guidance of the guide rail 52, thereby indirectly adjusting the position of the lifting component 546 in the lifting assembly 54. Then, the personnel start the second servo motor 541 to make the winding roller 542 rotate. The winding chain 543 wound around the winding roller 542 will gradually loosen and, guided by the position of the guide roller 545, will bring the end lifting component 546 down steadily. Finally, the personnel assist the lifting component 546 to contact the cryogenic rack lifting area, and the lifting operation can be carried out.
[0025] Working principle: This cryopreservation rack lifting device for biological liquid nitrogen tanks operates by using the braked casters 2 to move the main body 1 of the device when it is necessary to lift the cryopreservation rack inside the corresponding biological liquid nitrogen tank. The liquid nitrogen tank is positioned in the center of the main body 1. Once the position is determined, the foot brake is used for stabilization. Then, the first servo motor 421 is activated, causing the first bevel gear 422 to rotate. This, in turn, drives the second bevel gear 423, which meshes with the first bevel gear, to rotate the forward and reverse lead screw 424, interacting with it. A pair of lead screw sleeves 425, along with their respective fixed connecting brackets 426, move relative to each other in coordination with the support guide block 427 and the guide groove 428. Since each pair of connecting brackets 426 has two pairs of limiting clamps 429 on opposite sides of its inner side, and the spacing between each pair of limiting clamps 429 can simultaneously accommodate both sides of the central axis of both large and small biological liquid nitrogen tanks (the only difference being the distance from the central axis), under the action of the aforementioned displacement structure, the two pairs of limiting clamps 429 can respectively fit and clamp onto the... The two sides of the biological liquid nitrogen tank, together with the rubber anti-slip sleeves 43 fitted around the upper and lower sections of the limiting clamping column 429, can achieve clamping and binding of the tank body, thereby improving the stability between the main body 1 of the device and the corresponding biological liquid nitrogen tank. Secondly, the position of the lifting component 546 can be adjusted according to the position of the cryopreservation rack in the center of the tank. The specific adjustment method is as follows: the personnel start the double-head motor 554, which makes the gears 555 at both ends rotate, thereby driving the racks 552 that mesh with the two gears 555 to move. The racks 552 will carry the guide frame 53 and the lifting component 54 above it, and adjust the horizontal dimension with the guidance of the guide rail 52, thereby indirectly adjusting the position of the lifting component 546 in the lifting component 54. Then, the personnel start the second servo motor 541, which makes the winding roller 542 rotate. The winding chain 543 around the winding roller 542 will gradually loosen and, under the guidance of the guide roller 545, bring the lifting component 546 at the end down stably. Finally, the personnel assist the lifting component 546 to contact the cryopreservation rack lifting area, and the lifting operation can be carried out.
[0026] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
[0027] It should be noted that this application covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of this application. To provide the public with a thorough understanding of this application, specific details are described in detail in the preferred embodiments, while those skilled in the art can fully understand this application without these details. Furthermore, to avoid unnecessary confusion regarding the substance of this application, well-known methods, processes, procedures, components, and circuits are not described in detail.
[0028] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.
Claims
1. A cryopreservation rack lifting device for a biological liquid nitrogen tank, comprising: The main body (1) is characterized in that: the bottom end of the main body (1) is provided with brake casters (2), and the top of the main body (1) is fixedly provided with a top mounting frame (3). The middle and front of the lower section of the main body (1) are provided with a stabilizing clamping mechanism (4). The top mounting frame (3) is installed with a lifting mechanism (5). The stabilizing clamping mechanism (4) includes a preset groove (41), and the preset groove (41) is opened in the lower front section of the main body (1). The preset groove (41) is provided with a clamping assembly (42) inside and in front. The clamping assembly (42) includes two pairs of limiting clamps (429), and rubber anti-slip sleeves (43) are sleeved on both sides of the middle section of each pair of limiting clamps (429).
2. The cryopreservation rack lifting device for biological liquid nitrogen tanks according to claim 1, characterized in that: The clamping assembly (42) includes a first servo motor (421), which is installed in the middle of a preset slot (41). A first bevel gear (422) is fixed around the output end of the first servo motor (421), and a second bevel gear (423) meshes with one side of the first bevel gear (422). A positive and negative lead screw (424) is fixed in the middle of the second bevel gear (423), and lead screw sleeves (425) are screwed on both sides of the middle section of the positive and negative lead screw (424). A connecting bracket (426) is fixed at the inner end of a pair of lead screw sleeves (425), and a support guide block (427) is fixed below a section of a pair of connecting brackets (426). A guide groove (428) is opened on one side of the upper surface of the bottom of the main body (1), and a limiting clamping post (429) is fixed on both sides of the opposite ends of a pair of connecting brackets (426).
3. The cryopreservation rack lifting device for biological liquid nitrogen tanks according to claim 2, characterized in that: The support guide block (427) at the bottom of the connecting bracket (426) and the guide groove (428) are connected by a support guide.
4. The cryopreservation rack lifting device for biological liquid nitrogen tanks according to claim 1, characterized in that: The limiting clamp (429) and the rubber anti-slip sleeve (43) are connected in a detachable set.
5. The cryopreservation rack lifting device for biological liquid nitrogen tanks according to claim 1, characterized in that: The lifting mechanism (5) includes a slot (51), and the slot (51) is opened at the bottom of one side of the top mounting frame (3). The bottom sides of the top mounting frame (3) are fixed with guide rails (52), and a guide frame (53) is slidably mounted above the guide rails (52). A lifting component (54) is mounted above the guide frame (53), and an adjustment component (55) is mounted in the middle of the lower part of the guide frame (53).
6. The cryopreservation rack lifting device for biological liquid nitrogen tanks according to claim 5, characterized in that: The lifting assembly (54) includes a second servo motor (541), which is mounted on the upper side of the guide frame (53). The output end of the second servo motor (541) is connected to a take-up roller (542). A through groove (547) is provided in the middle of one side of the guide frame (53), and fixing blocks (544) are fixed on both sides of the through groove (547) above the guide frame (53). A guide roller (545) is provided on the inner side of a pair of fixing blocks (544). A take-up chain (543) is wound around the periphery of the take-up roller (542) and the surface of the guide roller (545), and a lifting member (546) is connected to the end of the take-up chain (543).
7. The cryopreservation rack lifting device for biological liquid nitrogen tanks according to claim 5, characterized in that: The adjustment component (55) includes a reserved slot (551), which is located in the lower middle part of the guide frame (53). Racks (552) are provided on both sides above the reserved slot (551). A fixed frame (553) is fixed on one side above the bottom of the top mounting frame (3). A double-headed motor (554) is installed in the middle of the fixed frame (553). Gears (555) that mesh with racks (552) are fixed around the two output ends of the double-headed motor (554).