Cryopreservation frame capable of lifting safely
By adopting the design of pushing components and laser targeting sensors in the frozen storage rack, the automatic pushing and detection of the drawer is achieved, solving the problem of insufficient revenue of the drawer during the lifting of the frozen storage rack, improving safety and avoiding damage.
Patent Information
- Application Number
- CN202420755491.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-04-11
AI Technical Summary
During the lifting process of existing frozen shelves, the drawer is not fully recycled, resulting in the lifting and lowering of the frozen shelves, and may cause the drawer to interfere with the box, causing damage.
A safe lifting and freezing storage shelf is designed, using pushing components and laser counterstrike sensors. The pushing components are automatically pushed into the drawer through the lever. The laser counterstrike sensor detects whether the drawer is fully entered to avoid interference.
Through the automatic push-in design of the drawer, the problem of not fully earning the drawer is solved, the safety of the frozen storage shelf is improved, and the damage to the drawer and samples is avoided.
Smart Images
Figure CN222611802U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of freezing racks, in particular to a freezing rack with safe lifting function. Background Art
[0002] Cryoracks are mainly used to store items that need to be kept at low temperatures. They are currently widely used. Depending on the usage scenario, the rack specifications and design structures are different. The small cryoracks currently used in experiments are generally placed in a refrigerated box, and there are open-door and lift-type cryoracks. The lift-type cryorack is mainly raised and lowered by a motor, driving it in and out of the vertical direction of the refrigerated chamber of the box. The operator then opens the drawer on the cryorack to take out the required items, and then the cryorack is driven back to the refrigerated chamber of the box by the motor.
[0003] Since there are samples on the cryostat in the laboratory, the lifting speed is relatively slow. The laboratory operator takes out the samples to restore the drawer position, presses the reset button, and then goes to do other work. When the cryostat assembly is automatically lifted and lowered by the motor, if the drawer is pulled out or the drawer is not pushed into the safe position, the drawer and the box of the cryostat assembly will interfere with each other when it is lowered. After the interference, even if the motor senses the load change and stops for protection, it will cause damage to the cryostat, drawer, or stored samples. Therefore, a solution is urgently needed.
[0004] The above contents are only used to assist in understanding the technical solution of the present utility model, and do not constitute an admission that the above contents are the closest prior art. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide a safe lifting freezing rack, the freezing rack has a simple structure, and the drawer of the freezing rack can be automatically reset, thereby improving the safety of the use of the freezing rack.
[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is implemented as follows: a safe lifting freezing rack comprises: a cover plate, a freezing rack, a cold storage box and a pushing assembly; a cold storage tank for placing the freezing rack is provided on the top of the cold storage box; the cover plate is arranged on the top of the cold storage tank, and a vertical driving part is provided between the cover plate and the cold storage box, and the vertical driving part drives the cover plate to lift and lower in the vertical direction; the pushing assembly is installed at the opening of the cold storage tank, and a lever rotating around the vertical direction is provided on the pushing assembly, and the lever is used to push the drawer on the freezing rack that exceeds the edge of the cold storage tank back into the freezing rack.
[0007] Preferably, the pushing assembly includes a mounting slot and a driving motor; the mounting slot is arranged at the top of the refrigerator, and the length direction of the mounting slot is perpendicular to the refrigerator slot; the lever is installed in the mounting slot; the driving motor is installed in the motor slot at the top of the refrigerator, the motor slot is connected to the mounting slot, and the rotating shaft of the driving motor is vertically connected to the middle of the lever.
[0008] Preferably, the driving motor is a low-power variable frequency motor.
[0009] Preferably, both ends of the lever are configured as beveled ends, and the inclined end surfaces of the beveled ends are opposite to the drawer.
[0010] Preferably, the vertical drive unit includes a pair of electric telescopic rods; the electric telescopic rods are respectively located on both sides of the refrigeration tank, the top of the electric telescopic rod is vertically connected to the bottom of the cover plate, and the bottom of the electric telescopic rod is installed in the through hole on the top of the refrigerator.
[0011] Preferably, there is an avoidance gap between the refrigerating tank and the freezing shelf of the refrigerator.
[0012] Preferably, the refrigerator is provided with a control panel for controlling the electric telescopic rod and the start-up of the drive motor, and the drawer is opposite to the control panel in the direction of entry and exit of the freezing rack.
[0013] Preferably, it also includes a pair of laser beam sensors for detecting whether the drawer exceeds the edge of the refrigerating tank; the laser beam sensors are installed at the edge of the top of the refrigerating tank, and the laser beam sensors are electrically connected to the control panel.
[0014] Preferably, mutually attractive magnets are provided between the rear end of the drawer and the freezing rack body.
[0015] The beneficial effects of the utility model are embodied in:
[0016] (1) The utility model solves the problem that the drawer is not completely put into the freezing rack, resulting in the freezing rack being blocked during the lifting process, by providing a push rod that can automatically push the drawer into the freezing rack. Such a design is not only simple in structure, but also easy to maintain.
[0017] (2) The laser beam sensor provided in the present invention can detect drawers that have not completely entered the freezing rack, thereby preventing the drawers from being squeezed and damaged during the process of raising and lowering the freezing rack, thereby improving the safety of the freezing rack and preventing the samples stored in the drawers from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure of the utility model;
[0019] Figure 2 It is a side view of the utility model;
[0020] Figure 3 It is a top view of the freezing rack and the box body of the utility model;
[0021] Figure 4 The utility model is a structural schematic diagram of a freezing rack and a lever.
[0022] Description of reference numerals:
[0023] 10. Cover; 20. Electric telescopic rod; 30. Freezing rack; 31. Drawer; 40. Control panel;
[0024] 51. lever; 52. drive motor; 60. laser beam sensor; 70. refrigerator;
[0025] 71. Avoid gaps. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0027] Example
[0028] See also Figures 1 to 4 As shown:
[0029] The utility model provides a safe lifting freezing rack, comprising: a cover plate 10, a freezing rack 30, a cold storage box 70 and a pushing component.
[0030] A refrigeration slot for placing the freezing rack 30 is provided on the top of the refrigeration box 70; a cover plate 10 is arranged on the top of the refrigeration slot, and a vertical driving part is provided between the cover plate 10 and the refrigeration box 70, and the vertical driving part drives the cover plate 10 to rise and fall in the vertical direction.
[0031] The vertical drive unit is mainly composed of a pair of electric telescopic rods 20, which are respectively located on both sides of the refrigeration tank. The top of the electric telescopic rod 20 is vertically connected to the bottom of the cover plate 10, and the bottom of the electric telescopic rod 20 is installed in the through hole at the top of the refrigerator 70.
[0032] The pushing assembly is mainly composed of a mounting groove and a driving motor 52; the pushing assembly is installed at the open end of the refrigerating tank, and a lever 51 rotating around a vertical direction is provided on the pushing assembly, and the lever 51 is used to push the drawer 31 on the freezing rack 30 that exceeds the edge of the refrigerating tank back into the freezing rack 30.
[0033] The mounting groove is arranged at the top of the refrigerator 70, and the length direction of the mounting groove is perpendicular to the refrigerator; the lever 51 is installed in the mounting groove. The driving motor 52 is installed in the motor groove at the top of the refrigerator 70, the motor groove is connected to the mounting groove, and the rotating shaft of the driving motor 52 is vertically connected to the middle of the lever 51. The rotating shaft of the driving motor 52 drives the lever 51 to rotate around the vertical direction, so that the lever 51 can push the drawer 31 beyond the freezing rack 30 back into the freezing rack 30.
[0034] The driving motor 52 is a low-power variable frequency motor, so the speed of the rotating shaft can be adjusted during actual use, so that the rotation speed of the lever 51 is slowed down, and the drawer 31 can be slowly pushed into the freezing rack 30.
[0035] Both ends of the lever 51 are configured as beveled ends, and the inclined end surfaces of the beveled ends are opposite to the drawer 31. The end of the lever 51 is configured to be inclined, so that when the inclined end surface of the lever 51 contacts the drawer 31, the drawer 31 is gradually pressed along the length direction of the inclined end surface during the rotation of the lever 51, and finally the drawer 31 is completely pushed into the freezing rack 30, and the contact connection between the two is released.
[0036] There is an avoidance gap 71 between the refrigerating tank of the refrigerator 70 and the freezing rack 30. Through such an arrangement, the deformation of the freezing rack 30 in a low temperature environment has a space to accommodate, and no collision occurs during the rising or falling process of the freezing rack 30.
[0037] A control panel 40 for controlling the start of the electric telescopic rod 20 and the driving motor 52 is provided on the refrigerator 70, and the drawer 31 is opposite to the control panel 40 along the direction of entry and exit of the freezing rack 30, so that the operator can observe whether the drawer 31 on the freezing rack 30 is not fully pushed into the freezing rack 30 when operating the control panel 40.
[0038] It also includes a pair of laser beam sensors 60 for detecting whether the drawer 31 exceeds the edge of the refrigerating tank; the laser beam sensors 60 are installed at the edge of the top of the refrigerating tank, and the laser beam sensors 60 are electrically connected to the control panel 40.
[0039] During normal operation, at the recommended retrieval level, such as rising to the 7th layer, the 7th layer is taken out, and after the drawer 31 is pulled out to block the laser beam sensor 60, the laser beam sensor 60 transmits the detection information to the control panel 40. Since the control panel 40 is electrically connected to the electric telescopic rod 20 and the drive motor 52, the control panel 40 receives the information to control the electric telescopic rod 20 to stop in time, that is, the freezing rack 30 does not fall anymore. At this time, the control panel 40 starts the drive motor 52 to work, and the drive motor 52 drives the lever 51 to work, so that the lever 51 pushes the drawer 31 into the freezing rack 30.
[0040] Affected by the mechanical clearance and inertia of the motor, "stopping in time" means that the freezing rack 30 will still move down about 0.2-0.5mm, so the recognition position of the laser beam sensor 60 needs to avoid the drawer 31 from directly moving and appearing in the judgment position of the laser beam sensor 60. Therefore, the lowest point of the top of each layer of drawers 31 is at least 0.5mm higher than the laser beam. Considering the assembly clearance of the laser beam sensor 60, the freezing rack 30, the drawer 31, etc., it is recommended to reserve 5mm.
[0041] A magnet that attracts each other is arranged between the rear end of the drawer 31 and the body of the freezing rack 30. In actual use, the magnet can exert an adsorption force when the lever 51 pushes the drawer 31, thereby making it easier for the lever 51 to push the drawer 31.
[0042] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.
[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes that satisfy both A and B. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist.
[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A safe lifting freezing rack, characterized in that: include: A cover plate (10), a freezing rack (30), a refrigerator (70) and a pushing assembly; the top of the refrigerator (70) is provided with a refrigerator slot for placing the freezing rack (30); the cover plate (10) is arranged on the top of the refrigerator slot, and a vertical driving part is provided between the cover plate (10) and the refrigerator (70), and the vertical driving part drives the cover plate (10) to rise and fall in a vertical direction; the pushing assembly is installed at the open part of the refrigerator slot, and a lever (51) rotating around the vertical direction is provided on the pushing assembly, and the lever (51) is used to push the drawer (31) on the freezing rack (30) that exceeds the edge of the refrigerator slot back into the freezing rack (30).
2. A safe lifting freezing rack according to claim 1, characterized in that: The pushing assembly comprises a mounting groove and a driving motor (52); the mounting groove is arranged at the top of the cold storage box (70), and the length direction of the mounting groove is perpendicular to the cold storage box; the shifting rod (51) is installed in the mounting groove; the driving motor (52) is installed in the motor groove at the top of the cold storage box (70), the motor groove is connected to the mounting groove, and the rotating shaft of the driving motor (52) is vertically connected to the middle part of the shifting rod (51).
3. A safe lifting freezing rack according to claim 2, characterized in that: The driving motor (52) is a low-power variable-frequency motor.
4. A safe lifting freezing rack according to claim 3, characterized in that: Both ends of the lever (51) are configured as beveled ends, and the inclined end surfaces of the beveled ends are opposite to the drawer (31).
5. A safe lifting freezing rack according to claim 1, 2, 3 or 4, characterized in that: The vertical drive unit comprises a pair of electric telescopic rods (20); the electric telescopic rods (20) are respectively located on both sides of the refrigeration tank, the top of the electric telescopic rod (20) is vertically connected to the bottom of the cover plate (10), and the bottom of the electric telescopic rod (20) is installed in a through hole at the top of the refrigeration box (70).
6. A safe lifting freezing rack according to claim 5, characterized in that: There is an avoidance gap (71) between the refrigeration tank of the refrigeration box (70) and the freezing shelf (30).
7. A safe lifting freezing rack according to claim 4, characterized in that: The refrigerator (70) is provided with a control panel (40) for controlling the activation of the electric telescopic rod (20) and the driving motor (52), and the drawer (31) is opposite to the control panel (40) along the direction of entry and exit of the freezing rack (30).
8. A safe lifting freezing rack according to claim 7, characterized in that: It also includes a pair of laser beam sensors (60) for detecting whether the drawer (31) exceeds the edge of the refrigerating tank; the laser beam sensors (60) are installed at the edge of the top of the refrigerating tank, and the laser beam sensors (60) are electrically connected to the control panel (40).
9. A safe lifting freezing rack according to claim 8, characterized in that: Mutually attractive magnets are provided between the rear end of the drawer (31) and the body of the freezing rack (30).