Freezing storage rack extracting device
By designing the limiting cylinder assembly and locking mechanism, the problem of wire rope swinging and disengagement during the lifting of the cryopreservation rack was solved, enabling the safe and stable extraction of the cryopreservation rack, reducing the risk of impact and falling, and improving the safety and accuracy of the operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DANCLAN BIO TECH CHENGDU CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-05-22
AI Technical Summary
In existing cryopreservation rack lifting mechanisms, the steel wire rope is prone to swinging, causing the cryopreservation rack to collide with the liquid nitrogen tank or external objects, posing a safety hazard. Furthermore, the cryopreservation rack is prone to falling off the lifting mechanism, affecting cell cryopreservation.
The wire rope is limited by the limiting cylinder assembly to reduce the swing amplitude, and the hook opening is locked by the locking mechanism to prevent the handle of the freezer rack from falling off the hook. The combination of guide wheels and slide rails improves the accuracy of operation.
It effectively reduces the swing amplitude of the cryopreservation rack during lifting or lowering, prevents impact and falling, and improves operational safety and the protective effect of the cryopreservation rack.
Smart Images
Figure CN224266288U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lifting equipment technology, specifically to a cryopreservation rack retrieval device. Background Technology
[0002] When cryopreserving cells, the cryopreservation box containing the cells is usually placed in a cryopreservation rack, and then the cryopreservation rack is subjected to programmed cooling in a programmed cooling device. Finally, the cryopreservation rack is placed in a liquid nitrogen tank for long-term cryopreservation.
[0003] Currently, extraction devices are typically used to place or remove cryopreservation racks into or from liquid nitrogen tanks. Patent application number CN202222883143.4 discloses a cryopreservation rack lifting mechanism that prevents the cantilever arm from swaying during use, reducing safety hazards and ensuring operational safety. However, because this lifting mechanism uses steel wire ropes to lift the cryopreservation racks, the ropes are prone to swinging during lifting or lowering, causing the cryopreservation racks to easily collide with the liquid nitrogen tank or other external objects, or even fall off the lifting mechanism, damaging the cryopreservation container and affecting the normal cryopreservation of cells. Utility Model Content
[0004] This application provides a cryogenic rack retrieval device, which reduces the swing amplitude of the wire rope by limiting its movement, and prevents the cryogenic rack handle from detaching from the hook and falling off the retrieval device during lifting or lowering by using a locking structure, thus effectively solving the above-mentioned problems.
[0005] The objective of this utility model is achieved through the following technical solution: a cryopreservation rack retrieval device, comprising:
[0006] frame;
[0007] The limiting cylinder assembly is telescopically mounted on the frame; the limiting cylinder assembly includes several limiting cylinders that are sequentially nested inside and outside, the inner limiting cylinder can move axially relative to its adjacent outer limiting cylinder, and the upper end of the outermost limiting cylinder is connected to the frame.
[0008] A wire rope, one end of which is connected to a winding mechanism, and the other end which axially passes through the limiting cylinder assembly and is connected to a hook assembly; when the wire rope is wound up, it can push the limiting cylinder assembly upward to retract.
[0009] This invention uses a limiting cylinder assembly to limit the steel wire rope, reducing the swing amplitude of the steel wire rope and preventing the cryogenic storage rack from being severely impacted due to excessive swing amplitude.
[0010] A stop block is fixedly installed on the wire rope. The stop block is located below the limiting cylinder assembly. When the wire rope is wound up, the stop block can abut against the innermost limiting cylinder to cause the limiting cylinder assembly to retract.
[0011] The hook assembly includes a hook attached to the end of the wire rope.
[0012] The hook assembly also includes a locking mechanism disposed on the hook, the locking mechanism being used to lock the opening of the hook.
[0013] The locking mechanism includes a rotatable shaft mounted on the hook, and a locking member and a counterweight respectively connected to the shaft and capable of rotating with the shaft; the locking member extends into the hook, and the counterweight extends away from the opening of the hook; the counterweight can drive the locking member to flip upward to lock the opening of the hook, and the locking member can open the opening of the hook when it flips downward.
[0014] This invention uses a locking mechanism to lock the opening of the hook, which can prevent the handle of the cryopreservation rack from falling off the hook and thus more effectively protect the cryopreservation rack.
[0015] The hook has a protrusion inside, and the locking element can abut against the protrusion when it is flipped upwards. The cooperation between the protrusion and the locking element can better lock the opening of the hook.
[0016] The frame includes a column, a rotary motor mounted on the upper end of the column, a turntable mounted on the rotary motor shaft, and a swing arm mounted on the turntable; the rotary motor can drive the swing arm to swing horizontally, the winding mechanism is mounted on the swing arm, and the wire rope is laid along the swing arm.
[0017] The lever can swing horizontally, allowing the hook to be more accurately aligned with the cryopreservation rack when lifting it, and making it easier to place the retrieved cryopreservation rack into the designated position.
[0018] The swing arm is equipped with a guide wheel, and the wire rope passes axially through the limiting cylinder assembly after passing over the guide wheel. The guide wheel makes it easier to wind up and unwind the wire rope.
[0019] The turntable is equipped with a slider, and the swing arm is equipped with a slide rail that cooperates with the slider.
[0020] The slider and rail configuration allows the lever to move axially, thus enabling the hook to better align with the handle of the cryogenic rack.
[0021] The winding mechanism includes a drum mounted on a rocker arm and a drive motor for driving the drum to rotate.
[0022] Compared with the prior art, this application has the following beneficial effects: This utility model limits the steel wire rope through the limiting cylinder assembly, reducing the swing amplitude of the steel wire rope and preventing the cryopreservation rack from being severely impacted due to excessive swing amplitude. At the same time, the locking mechanism locks the opening of the hook, preventing the handle of the cryopreservation rack from detaching from the hook and falling off, thus more effectively protecting the cryopreservation rack.
[0023] Some of the additional features of this application will be described in the following description. These additional features will become apparent to those skilled in the art upon examination of the following description and the accompanying drawings, or upon understanding the production or operation of the embodiments. The features disclosed in this application can be implemented and achieved through the practice or use of various methods, means, and combinations thereof with respect to the specific embodiments described below. Attached Figure Description
[0024] The accompanying drawings, which are provided to further illustrate this application and constitute a part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute a limitation thereof. In the drawings, the same reference numerals denote the same components.
[0025] Figure 1 This is a structural diagram of the present invention.
[0026] Figure 2 This is a cross-sectional view of the limiting cylinder assembly of this utility model.
[0027] Figure 3 This is a schematic diagram of the hook assembly of this utility model.
[0028] Figure 4 A diagram showing the locking mechanism of the cryogenic rack handle when pushed open.
[0029] Figure 5 This is a diagram showing the hook being inserted into the handle of the cryogenic rack.
[0030] Figure 6 This is a schematic diagram of the locking mechanism of this utility model.
[0031] The reference numerals in the above figures are as follows: 1-Column, 2-Rotary motor, 3-Thrust bearing, 4-Turntable, 5-Slider, 6-Slide rail, 7-Swing rod, 8-Drum, 9-Wire rope, 10-Guide wheel, 11-Limit cylinder assembly, 111-Limit cylinder, 12-Stop block, 13-Hook assembly, 131-Hook, 132-Rotating shaft, 134-Locking fastener, 135-Counterweight, 136-Protrusion, 137-Opening, 14-Frozen storage rack handle, 15-Lifting rope. Detailed Implementation
[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments.
[0033] Example
[0034] likeFigure 1 As shown, this embodiment discloses a cryopreservation rack retrieval device, which includes: a frame, a limiting cylinder assembly 11, a winding mechanism, a hook assembly 13, and a steel wire rope 9. The limiting cylinder assembly 11 includes several limiting cylinders 111, which are sequentially arranged inner and outer sleeves together. The inner limiting cylinder 111 can move axially relative to its adjacent outer limiting cylinder 111, while the upper end of the outermost limiting cylinder 111 is fixedly connected to the frame. Thus, the length of the entire limiting cylinder assembly 11 can be extended or retracted. Figure 2 As shown.
[0035] A winding mechanism is mounted on the frame and is used to wind up the wire rope 9. One end of the wire rope 9 is connected to the winding mechanism, and the other end axially passes through the limiting cylinder assembly 11 and is connected to the hook assembly 13. That is, one end of the wire rope 9 is wound around the winding mechanism, and the other end passes through the inside of the limiting cylinder 111 and is connected to the hook assembly 13. Figure 1 As shown. In addition, a stop block 12 is fixedly installed on the wire rope 9. The stop block 12 is located below the limiting cylinder assembly 11. With the above structure, when the winding mechanism winds the wire rope 9, the stop block 12 moves upward with the wire rope 9 and abuts against the innermost limiting cylinder 11. As the wire rope 9 is continuously wound, the limiting cylinder assembly 11 retracts under the push of the stop block 12. When the wire rope 9 is unwound, the limiting cylinder 111 extends under its own gravity, thereby extending the limiting cylinder assembly 11.
[0036] In this embodiment, the inner diameter of the limiting cylinder 111 is slightly larger than the diameter of the wire rope 9. Since the wire rope 9 passes through the limiting cylinder 111, the swing amplitude of the wire rope 9 is reduced under the limiting action of the limiting cylinder 111, preventing the cryopreservation rack from being severely impacted due to excessive swing amplitude. At the same time, since the limiting cylinder assembly 11 is telescopic, the limiting cylinder assembly 11 will not affect the winding and unwinding of the wire rope 9.
[0037] Specifically, the winding mechanism includes a drum 8 mounted on a frame and a drive motor. The shaft of the drive motor is connected to the drum 8 and is used to drive the drum 8 to rotate. One end of the wire rope 9 is wound on the drum 8. When the drive motor drives the drum 8 to rotate forward, the wire rope 9 is wound on the drum 8. When the drum 8 rotates in reverse, the wire rope 9 is released.
[0038] like Figure 3 As shown, the hook assembly 13 includes a hook 131 connected to the end of the wire rope 9. During operation, the hook 131 is aligned and hooked into the handle 14 of the cryogenic rack, which can lift or lower the cryogenic rack when the wire rope 9 is raised or lowered.
[0039] To better prevent the freezer rack handle 14 from detaching from the hook 131 during lifting or lowering of the freezer rack, such as Figure 3As shown, as another implementation, the hook assembly 13 also includes a locking mechanism disposed on the hook 131, the locking mechanism being used to lock the opening 137 of the hook 131.
[0040] Specifically, such as Figure 6 As shown, the locking mechanism includes a rotating shaft 132 on the hook 131, and a locking member 134 and a counterweight 135 respectively connected to the rotating shaft 132. The rotating shaft 132 and the hook 131 are clearance-fitted, allowing the rotating shaft 132 to rotate, while the locking member 134 and the counterweight 135 rotate with the rotating shaft 132. The locking member 134 extends into the hook 131, and the counterweight 135 extends away from the opening 137 of the hook 131. In other words, the counterweight 135 and the locking member 134 extend in opposite directions, forming an angle between them, and the weight of the counterweight 135 is greater than the weight of the locking member 134. Therefore, the counterweight 135, under its own weight, can cause the locking member 134 to flip upwards. A protrusion 136 is provided on the inner side of the hook 131, located below the opening 137, as shown... Figure 3 As shown, under the weight of the counterweight 135, the counterweight 135 rotates downward counterclockwise, thereby driving the locking member 134 to rotate upward counterclockwise. When the locking member 134 rotates upward counterclockwise to a certain angle, the locking member 134 abuts against the protrusion 136, and the opening 137 of the hook 131 is locked by the cooperation of the protrusion 136 and the locking member 134.
[0041] With the above structure, when it is necessary to lift the cryogenic rack, the wire rope 9 is lowered and the frame is moved to move the hook assembly 13 below the cryogenic rack handle 14, aligning the handle 14 with the opening 137 of the hook 131. The wire rope 9 is then wound up, and the hook 131 moves upward relative to the handle 14. With the handle 14 against the hook, the locking element 134 rotates downward clockwise, opening the opening 137, and the handle 14 is hooked into the hook 131. Figure 4 As shown. When the handle 14 of the cryopreservation rack is hooked into the hook 131, under the weight of the counterweight 135, the locking element 134 rotates counterclockwise upwards, re-closing the opening 137, as shown. Figure 5 As shown, the handle 14 of the freezer rack will not detach from the hook 131 during the lifting or lowering of the freezer rack. After the freezer rack is lifted to the placement position, manually rotate the counterweight 135 upward clockwise to open the opening 137 and remove the hook 131.
[0042] In some applications, if it is necessary to place the cryopreservation rack into a liquid nitrogen tank, and the liquid nitrogen tank is relatively deep, it is not easy for the operator to manually turn the counterweight 135 to open the opening 137 after the cryopreservation rack is lowered into the liquid nitrogen tank. Therefore, as an alternative, a lifting rope 15 can be installed on the counterweight 135. During the process of lowering the cryopreservation rack into the liquid nitrogen tank, the operator holds the upper end of the lifting rope 15. After the cryopreservation rack is smoothly placed at the bottom of the liquid nitrogen tank, the lifting rope 15 is lifted upwards, causing the counterweight 135 to rotate counterclockwise, opening the opening 137. Then, the hook 131 is lowered further, the cryopreservation rack handle 14 disengages from the hook 131, and the frame is moved away from the hook 131. At this point, the wire rope 9 can be wound back to its initial state, and the limiting cylinder assembly 11 is also retracted to its initial state.
[0043] In this embodiment, the opening 137 of the hook 131 is locked by a locking mechanism, which can prevent the handle of the cryopreservation rack from falling off the hook 131 and thus more effectively protect the cryopreservation rack.
[0044] The rack in this embodiment is largely the same as that in the prior art, such as Figure 1 As shown, it includes a column 1, a rotary motor 2 mounted on the upper end of the column 1, a turntable 4 mounted on the shaft of the rotary motor 2, and a swing arm 7 mounted on the turntable 4. When the rotary motor 2 drives the turntable 4 to rotate, the swing arm 7 can swing horizontally. The winding mechanism is mounted on the swing arm 7, and the wire rope 9 is laid along the swing arm 7. A thrust bearing 3 can be installed between the turntable 4 and the column 1 to allow the turntable 4 to rotate smoothly.
[0045] The swing arm 7 is equipped with a guide wheel 10 and a through hole. The wire rope 9 passes around the guide wheel 10, through the through hole, and then axially through the limiting cylinder assembly 11. The guide wheel 10 makes it easier to wind up and unwind the wire rope 9.
[0046] In addition, a slider 5 is provided on the turntable 4, and a slide rail 6 that cooperates with the slider 5 is provided on the swing arm 7. The swing arm 7 can swing horizontally and move axially, so that the hook 131 can be more accurately aligned with the cryopreservation rack when lifting it, and the retrieved cryopreservation rack can be placed in the set position more conveniently.
[0047] It should be noted that all features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any way, except for mutually exclusive features and / or steps.
[0048] Furthermore, the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this utility model, and these solutions all fall within the scope of this utility model and its protection. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and not intended to limit the scope of the claims. The scope of protection of this utility model is defined by the claims and their equivalents.
Claims
1. A cryopreservation rack retrieval device, characterized in that, include: frame; The limiting cylinder assembly (11) is telescopically mounted on the frame; the limiting cylinder assembly (11) includes a plurality of limiting cylinders (111) arranged in sequence inside and outside, the inner limiting cylinder (111) can move axially relative to its adjacent outer limiting cylinder (111), and the upper end of the outermost limiting cylinder (111) is connected to the frame. A steel wire rope (9) has one end connected to a winding mechanism and the other end axially passing through the limiting cylinder assembly (11) and connected to a hook assembly (13); when the steel wire rope (9) is wound up, it can push the limiting cylinder assembly (11) upward to retract.
2. The cryopreservation rack retrieval device according to claim 1, characterized in that, A stop block (12) is fixedly provided on the wire rope (9). The stop block (12) is located below the limiting cylinder assembly (11). When the wire rope (9) is wound up, the stop block (12) can abut against the innermost limiting cylinder (11) so that the limiting cylinder assembly (11) retracts.
3. The cryopreservation rack retrieval device according to claim 1, characterized in that, The hook assembly (13) includes a hook (131) attached to the end of the wire rope (9).
4. The cryopreservation rack retrieval device according to claim 3, characterized in that, The hook assembly (13) further includes a locking mechanism disposed on the hook (131), the locking mechanism being used to lock the opening (137) of the hook (131).
5. The cryopreservation rack retrieval device according to claim 4, characterized in that, The locking mechanism includes a rotating shaft (132) rotatably mounted on the hook (131), and a locking member (134) and a counterweight (135) respectively connected to the rotating shaft (132) and capable of rotating with the rotating shaft (132); the locking member (134) extends into the hook (131), and the counterweight (135) extends away from the opening (137) of the hook (131); the counterweight (135) can drive the locking member (134) to flip upward to lock the opening (137) of the hook (131); when the locking member (134) flips downward, it can open the opening (137) of the hook (131).
6. The cryopreservation rack retrieval device according to claim 5, characterized in that, The hook (131) has a protrusion (136) inside, and the locking member (134) can abut against the protrusion (136) when it is flipped upward.
7. The cryopreservation rack retrieval device according to claim 1, characterized in that, The frame includes a column (1), a rotary motor (2) mounted on the upper end of the column (1), a turntable (4) mounted on the rotating shaft of the rotary motor (2), and a swing arm (7) mounted on the turntable (4); the rotary motor (2) can drive the swing arm (7) to swing horizontally, the winding mechanism is mounted on the swing arm (7), and the wire rope (9) is laid along the swing arm (7).
8. The cryopreservation rack retrieval device according to claim 7, characterized in that, The swing arm (7) is provided with a guide wheel (10), and the steel wire rope (9) passes through the guide wheel (10) and then axially penetrates the limiting cylinder assembly (11).
9. The cryopreservation rack retrieval device according to claim 7, characterized in that, The turntable (4) is provided with a slider (5), and the rocker arm (7) is provided with a slide rail (6) that cooperates with the slider (5).
10. The cryopreservation rack retrieval device according to claim 7, characterized in that, The winding mechanism includes a drum (8) mounted on a rocker arm (7) and a drive motor for driving the drum (8) to rotate.