CN117136943A - Liquid nitrogen tank access equipment capable of taking multiple liquid nitrogen tanks at one time - Google Patents

Liquid nitrogen tank access equipment capable of taking multiple liquid nitrogen tanks at one time Download PDF

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Publication number
CN117136943A
CN117136943A CN202311110822.0A CN202311110822A CN117136943A CN 117136943 A CN117136943 A CN 117136943A CN 202311110822 A CN202311110822 A CN 202311110822A CN 117136943 A CN117136943 A CN 117136943A
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CN
China
Prior art keywords
frame
liquid nitrogen
moving
moving frame
magnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311110822.0A
Other languages
Chinese (zh)
Inventor
方秀菊
易德露
冯海岭
陶勇
孟庆强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongke Meiling Cryogenics Co Ltd
Original Assignee
Zhongke Meiling Cryogenics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhongke Meiling Cryogenics Co Ltd filed Critical Zhongke Meiling Cryogenics Co Ltd
Priority to CN202311110822.0A priority Critical patent/CN117136943A/en
Publication of CN117136943A publication Critical patent/CN117136943A/en
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N1/00—Preservation of bodies of humans or animals, or parts thereof
    • A01N1/02—Preservation of living parts
    • A01N1/0236—Mechanical aspects
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N1/00—Preservation of bodies of humans or animals, or parts thereof
    • A01N1/02—Preservation of living parts
    • A01N1/0236—Mechanical aspects
    • A01N1/0263—Non-refrigerated containers specially adapted for transporting or storing living parts whilst preserving, e.g. cool boxes, blood bags or "straws" for cryopreservation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/02—Internal fittings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/02—Internal fittings
    • B65D25/10—Devices to locate articles in containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Hematology (AREA)
  • Warehouses Or Storage Devices (AREA)

Abstract

The embodiment of the invention provides liquid nitrogen tank access equipment for taking a plurality of liquid nitrogen tanks at a time, and relates to the field of sample access of biological sample libraries. Aims to solve the problems of easy inactivation, low efficiency and danger of biological samples in the manual access process of the existing freezing storage tube. It includes storage frame, liquid nitrogen container, gets nest of tubes and drive train group: the storage rack is fixed in the liquid nitrogen tank and is provided with a plurality of first placing grooves; the tube taking set comprises a movable frame and a plurality of clamping jaws; the movable frame is provided with a plurality of second placing grooves; the transmission group is arranged on the liquid nitrogen tank and connected with the movable frame, and the transmission group is used for driving the movable frame to move so that the movable frame moves into the storage frame and expands, or moves out of the storage frame and gathers. Through getting the downshifting expansion of nest of tubes for get nest of tubes and enter into the storage frame, remove the quick expansion of frame in storing the frame, get nest of tubes and store the accurate transfer of frame cooperation realization to freezing the deposit pipe, need not the manual pipe of getting, operating time is short moreover, and efficiency obtains improving greatly.

Description

Liquid nitrogen tank access equipment capable of taking multiple liquid nitrogen tanks at one time
Technical Field
The invention relates to the field of sample access of biological sample libraries, in particular to liquid nitrogen tank access equipment for taking a plurality of samples at a time.
Background
Cryogenic storage is an important means of preserving biological sample activity. The conventional means is to store the biological sample in the liquid nitrogen tank, when the target freezing tube is to be taken out, most of the prior art is manual access, when the target freezing tube is selected by lifting the freezing basket, the rest of the freezing tube can be exposed to the normal temperature environment, the activity of the biological sample can be destroyed by multiple operations, the biological sample is greatly damaged, the personnel operation time is long, the efficiency is low, and the long-time contact with the low-temperature environment can also influence the health.
Disclosure of Invention
The invention aims to provide a liquid nitrogen tank access device for taking a plurality of liquid nitrogen tanks at a time, which can solve the problems that biological samples are easy to inactivate, low in efficiency and dangerous in the manual access process of the conventional freezing storage tube.
Embodiments of the invention may be implemented as follows:
the embodiment of the invention provides a liquid nitrogen tank access device for taking a plurality of liquid nitrogen tanks at a time, which comprises a storage rack, a liquid nitrogen tank, a pipe taking group and a transmission group, wherein the storage rack is provided with a plurality of liquid nitrogen tanks, the liquid nitrogen tanks are connected with the storage rack through a transmission group, and the transmission group is provided with a plurality of liquid nitrogen tanks storage and delivery units: the storage rack is fixed in the liquid nitrogen tank and is provided with a plurality of first placing grooves which are used for placing the freezing storage pipes; the tube taking set comprises a movable frame and a plurality of clamping jaws; the movable frame can be unfolded or gathered, the movable frame is provided with a plurality of second placing grooves, and the clamping jaws are in one-to-one correspondence with the second placing grooves and are magnetically assembled together; the transmission group is arranged on the liquid nitrogen tank and is connected with the movable frame, and the transmission group is used for driving the movable frame to move so as to enable the movable frame to move into the storage frame and spread or move out of the storage frame and gather; each second placing groove is used for corresponding to the first placing groove under the condition that the movable frame is unfolded; the clamping jaw in each second placing groove is used for leaving the second placing groove under the action of magnetic repulsion so as to enter the first placing groove and clamp the freezing storage pipe, or the clamping jaw is used for resetting under the action of magnetic attraction so as to move the clamped freezing storage pipe clamp into the second placing groove.
In addition, the liquid nitrogen tank access device for taking a plurality of liquid nitrogen tanks at a time provided by the embodiment of the invention can also have the following additional technical characteristics:
optionally, the moving frame comprises an upper moving disc, a lower moving disc, an upper moving frame and a lower moving frame; the upper moving frame and the lower moving frame are vertically arranged, the top end of the upper moving frame is in sliding connection with the upper moving disc, the bottom end of the lower moving frame is in sliding connection with the lower moving disc, and the outer side of the upper moving frame can be in sliding fit with the inner side of the lower moving frame when the moving frame is in a unfolding state so that the upper moving frame and the lower moving frame are unfolded side by side; when the movable frames are in a gathering state, the bottom end of the upper movable frame can be in sliding fit with the top end of the lower movable frame, so that the upper movable frame and the lower movable frame are overlapped and gathered; the upper moving frame and the lower moving frame are respectively provided with a plurality of second placing grooves;
the transmission group is connected with the upper moving disc and the lower moving disc at the same time, and the transmission group is used for driving the upper moving disc and the lower moving disc to be close to or far away from each other so as to enable the upper moving frame and the lower moving frame to be switched between the unfolding state and the gathering state.
Optionally, the storage rack comprises a plurality of storage blades, the storage blades are arranged around to form a hollow column structure, each storage blade is provided with a gap which is open towards the hollow position, and each storage blade is provided with a plurality of first placing grooves on two sides of the gap;
the number of the upward moving frames and the number of the downward moving frames are multiple, the upward moving frames and the downward moving frames are all arranged around the circle center connecting line of the upward moving disc and the circle center connecting line of the downward moving disc, the top ends of the upward moving frames are respectively connected with the upward moving disc in a sliding manner along the radial direction of the upward moving disc, the bottom ends of the downward moving frames are respectively connected with the downward moving disc in a sliding manner along the radial direction of the downward moving disc, an upward moving frame inclined plane is arranged at the bottom end of each upward moving frame, a downward moving frame inclined plane is arranged at the top end of each downward moving frame, and the upward moving frame inclined planes are in sliding fit with the downward moving frame inclined planes;
the transmission group is used for driving the upward moving frame and the downward moving frame to extend into the gap in an unfolding state so that the second placing groove corresponds to the first placing groove in position; or the transmission group is used for driving the upward moving frame and the downward moving frame to leave the liquid nitrogen tank in a gathering state.
Optionally, the transmission group comprises a first driving mechanism and a second driving mechanism; the first driving mechanism is arranged on the liquid nitrogen tank and connected with the second driving mechanism, and the first driving mechanism is used for driving the first driving mechanism, the upper moving disc, the lower moving disc, the upper moving frame and the lower moving frame to synchronously move in or out of the storage frame; the second driving mechanism is connected with the upper moving disc and the lower moving disc and is used for driving the upper moving disc and the lower moving disc to be close to or far away from each other so as to enable the upper moving frame and the lower moving frame to be unfolded or gathered.
Optionally, the first driving mechanism comprises a first motor, a screw, a supporting frame and a moving plate; the support frame is fixed on the liquid nitrogen tank, the screw is rotationally arranged in the support frame along the vertical direction, the moving plate is slidably arranged in the support frame along the vertical direction, the moving plate is in threaded connection with the screw, and the moving frame is connected with the moving plate; the first motor is fixed on the support frame and is connected with the screw rod; the first motor is used for driving the screw rod to rotate so as to drive the moving plate and the moving frame to reciprocate along the vertical direction so as to move in or out of the storage frame.
Optionally, the second driving mechanism comprises a supporting rod, a rack, a gear and a second motor; the support rods are arranged in the vertical direction, the top ends of the support rods are fixed with the moving plate, and the racks are fixed on the support rods side by side in the vertical direction; the upper moving disc, the upper moving frame and the lower moving frame are movably sleeved on the peripheries of the supporting rod and the rack, and the lower moving disc is fixed with the bottom end of the supporting rod; the second motor and the gear are fixed at the top of the upper moving disc, the second motor is connected with the gear, the gear is meshed with the rack, and the second motor is used for driving the gear to move along the rack so as to drive the upper moving disc to be close to or far away from the lower moving disc.
Optionally, the transmission set further comprises a first magnet, a second magnet, a third magnet and a fourth magnet; the first electromagnet is fixed on the upper half section of the support rod and can be electrified positively and negatively, the second magnet is fixed on the upward moving frame, the first electromagnet is used for being mutually repelled with the second magnet so as to enable the upward moving frame to move away from the support rod, or the first electromagnet is used for being mutually attracted with the second magnet so as to enable the upward moving frame to move close to the support rod; the third magnet is fixed on the lower half section of the supporting rod, the fourth magnet is fixed on the downward moving frame, and the third magnet and the fourth magnet are attracted mutually.
Optionally, a first chute is arranged in the second placing groove along the thickness in a penetrating way; the first chute is sequentially provided with a fifth electromagnet, a sixth electromagnet and a seventh electromagnet along the thickness direction, and the fifth electromagnet and the seventh electromagnet are respectively positioned at two sides of the second placing groove; the clamping jaw is arranged in the first chute in a sliding manner along the thickness direction of the second placing groove, an eighth magnet is arranged on the outer wall of the clamping jaw, and the eighth magnet is attracted with the sixth magnet; the eighth magnet is used for repelling or attracting the fifth electromagnet so that the clamping jaw can reciprocate between the first sliding groove and the first placing groove from one side of the fifth electromagnet of the second placing groove; or the eighth magnet is used for repelling or attracting the seventh electromagnet so that the clamping jaw can reciprocate between the first sliding groove and the first placing groove from one side of the seventh electromagnet of the second placing groove.
Optionally, the clamping jaw comprises a first clamping part, a second clamping part and a connecting piece; a clamping space for clamping the frozen storage tube is formed between the first clamping part and the second clamping part, two clamping openings communicated with the clamping space are respectively formed between two opposite side edges of the first clamping part and the second clamping part, and elastic convex plates are respectively arranged on the two clamping openings so that the frozen storage tube can move in or out of the clamping space; the eighth magnet is fixed on the back surface of the first clamping part or the second clamping part and can be magnetically matched with the sixth magnet on the first chute; the bottoms of the first clamping part and the second clamping part are fixed through a connecting piece, so that the first clamping part and the second clamping part can synchronously move.
Optionally, a second chute, a limiting circular groove and a circular groove outlet are arranged in the first placing groove, the second chute is arranged along the thickness direction of the first placing groove and is used for being in sliding fit with the clamping jaw, the limiting circular groove is arranged at the bottom of the first placing groove, and the limiting circular groove is used for limiting the bottom of the freezing storage pipe; the round groove opening is formed in the side part of the limiting round groove, the round groove outlet is elastic, and the round groove opening is used for enabling the freezing storage tube to move in or out of the limiting round groove.
The liquid nitrogen tank access device for taking a plurality of liquid nitrogen tanks at a time has the advantages that:
the utility model provides a liquid nitrogen container access arrangement of a plurality of is got once, includes storage frame, liquid nitrogen container, gets the nest of tubes and drive group: the storage rack is fixed in the liquid nitrogen tank and is provided with a plurality of first placing grooves which are used for placing the freezing storage pipes; the tube taking set comprises a movable frame and a plurality of clamping jaws; the movable frame can be unfolded or gathered, and is provided with a plurality of second placing grooves, and the clamping jaws are in one-to-one correspondence with the second placing grooves and are magnetically assembled together; the transmission group is arranged on the liquid nitrogen tank and connected with the movable frame, and the transmission group is used for driving the movable frame to move so as to enable the movable frame to move into the storage frame and spread or move out of the storage frame and gather; each second placing groove is used for corresponding to the first placing groove under the condition that the movable frame is unfolded; the clamping jaw in each second placing groove is used for leaving the second placing groove under the action of magnetic repulsion so as to enter the first placing groove and clamp the freezing storage pipe, or the clamping jaw is used for resetting under the action of magnetic attraction so as to move the clamped freezing storage pipe clamp into the second placing groove.
The tube taking group is downwards moved and unfolded, so that the tube taking group enters the storage rack, the movable rack is quickly unfolded in the storage rack, the tube taking group is matched with the storage rack to realize accurate transfer of the frozen storage tube, the tube taking is not needed manually, the operation time is short, and the efficiency is greatly improved; only the freezing tube which needs to be taken out is transferred, so that the rest freezing tubes which do not need to be taken out are not exposed to the normal temperature environment, and the biological sample is not easy to inactivate. Through the cooperation between getting nest of tubes, storage frame, the frozen storage pipe, solve the dangerous, inefficiency of manual access process that current liquid nitrogen container access equipment exists, the easy problem of inactivating of biological sample.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of the overall structure of a liquid nitrogen tank access device for single taking of a plurality of liquid nitrogen tanks, provided by an embodiment of the invention;
Fig. 2 is a right side view of a transmission group and a tube taking group in a single-taking multiple liquid nitrogen tank access device provided by an embodiment of the invention;
FIG. 3 is a front view of a carriage in a single access liquid nitrogen tank storage device provided by an embodiment of the present invention;
fig. 4 is a front view of a mobile plate in a liquid nitrogen tank access device for taking a plurality of liquid nitrogen tanks at a time according to an embodiment of the present invention;
FIG. 5 is a rear view of an upper mobile puck in a single access liquid nitrogen tank storage device according to an embodiment of the present invention;
FIG. 6 is a top view of an upper movable disk in a single access to multiple liquid nitrogen tanks in accordance with an embodiment of the present invention;
FIG. 7 is a front view of an up-shifting rack in a single-taking multiple liquid nitrogen tank access device provided by an embodiment of the present invention;
FIG. 8 is a front view of an up-shifting rack and clamping jaw in a liquid nitrogen tank access device for taking a plurality of liquid nitrogen tanks at a time, which is provided by the embodiment of the invention;
FIG. 9 is a front view of a jaw in a single access multiple liquid nitrogen tank access device provided by an embodiment of the present invention;
FIG. 10 is a front view of a downshifting rack in a single-fetch multiple liquid nitrogen tank access apparatus provided by an embodiment of the present invention;
FIG. 11 is a front view of a lower movable puck in a single access liquid nitrogen tank storage device according to an embodiment of the present invention;
FIG. 12 is a front view of a storage rack in a single access multiple liquid nitrogen tank access device provided by an embodiment of the present invention;
fig. 13 is a front view of a storage rack and a liquid nitrogen tank in a liquid nitrogen tank storage device for taking a plurality of liquid nitrogen tanks at a time according to an embodiment of the present invention;
FIG. 14 is a view showing a state in a liquid nitrogen tank access device for taking a plurality of liquid nitrogen tanks at a time according to an embodiment of the present invention;
FIG. 15 is an enlarged view of portion A of FIG. 14;
FIG. 16 is a two-view diagram showing a state in a liquid nitrogen tank access device for taking a plurality of liquid nitrogen tanks at a time according to an embodiment of the present invention;
FIG. 17 is an enlarged view of portion B of FIG. 16;
FIG. 18 is a three-view showing a state in a liquid nitrogen tank access device for taking a plurality of liquid nitrogen tanks at a time according to an embodiment of the present invention;
fig. 19 is an enlarged view of a portion C of fig. 18;
FIG. 20 is a four-view showing a state in a liquid nitrogen tank access device for taking a plurality of liquid nitrogen tanks at a time according to an embodiment of the present invention;
FIG. 21 is a view showing the state of an up-moving rack, a down-moving rack, a freezing tube and a storage blade in a liquid nitrogen tank access device for taking a plurality of liquid nitrogen tanks at a time according to the embodiment of the invention;
fig. 22 is a two-view showing the states of an up-moving rack, a down-moving rack, a freezing tube and a storage blade in a liquid nitrogen tank access device for taking a plurality of liquid nitrogen tanks at a time according to an embodiment of the present invention.
Icon: 100-transmission group; 110-a first motor; 120-screw; 130-supporting frames; 131-a first round hole; 132-limiting slide ways; 140-moving plate; 141-a first square hole; 142-a second round hole; 150-supporting rods; 160-racks; 170-a gear; 180-a second motor; 200-taking a tube group; 210-up moving the disc; 211-rectangular holes; 212, a limiting frame; 213-upper axial groove; 214-upper radial slots; 220-moving up the frame; 221-T-shaped protrusion; 222-a second placement groove; 223-first runner; 224-a fifth electromagnet; 225-sixth magnet; 226-seventh electromagnet; 227-up-rack ramp; 230-clamping jaw; 231-clamping surface; 232-convex plate; 233-a limiting plate; 234-eighth magnet; 240-moving down the frame; 241-T shaped grooves; 247-downward moving rack inclined plane; 250-moving the disc downwards; 251-a second square hole; 252-lower radial slots; 253-lower axial slots; 300-a storage rack; 310-elongated protrusions; 320-storing the leaves; 330-a first placement groove; 340-a second chute; 350-limiting round grooves; 360-round groove outlet; 370-separator; 400-freezing tube; 500-liquid nitrogen tank; 510—an access port; 520-limit square groove.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The liquid nitrogen tank access apparatus for single-taking a plurality of liquid nitrogen tanks provided in this embodiment is described in detail below with reference to fig. 1 to 22.
Referring to fig. 1 to 22, the present embodiment provides a liquid nitrogen tank access device for taking a plurality of liquid nitrogen tanks at a time, which includes a storage rack 300, a liquid nitrogen tank 500, a pipe taking set 200 and a transmission set 100: the storage rack 300 is fixed in the liquid nitrogen tank 500, and the storage rack 300 is provided with a plurality of first placing grooves 330, and the first placing grooves 330 are used for placing the freezing storage tubes 400; the tube-taking set 200 includes a moving rack and a plurality of gripping jaws 230; the movable frame can be unfolded or gathered, the movable frame is provided with a plurality of second placing grooves 222, and a plurality of clamping jaws 230 are in one-to-one correspondence with the plurality of second placing grooves 222 and are magnetically assembled together; the transmission group 100 is arranged on the liquid nitrogen tank 500, the transmission group 100 is connected with the movable frame, and the transmission group 100 is used for driving the movable frame to move so as to enable the movable frame to move into the storage frame 300 and spread out, or move out of the storage frame 300 and gather; each of the second placement grooves 222 is configured to correspond to the first placement groove 330 in a state that the moving rack is unfolded; the clamping jaw 230 in each second placement groove 222 is used for leaving the second placement groove 222 under the action of magnetic repulsion to enter the first placement groove 330 and clamp the freezing storage tube 400, or the clamping jaw 230 is used for resetting under the action of magnetic attraction to clamp the clamped freezing storage tube 400 into the second placement groove 222.
Specifically, the storage rack 300 is fixed in the liquid nitrogen tank 500, and the freezing cylinder 400 is placed in the first placing groove 330 of the storage rack 300. The transmission group 100 drives the movable rack to move into the storage rack 300 to be unfolded, so that the second placing grooves 222 on the movable rack correspond to the first placing grooves 330 one by one, then the clamping jaws 230 are driven to enter the first placing grooves 330 to clamp the frozen storage pipes 400 through the magnetic repulsive interaction between the clamping jaws 230 and the second placing grooves 222, then the clamping jaws 230 and the clamped frozen storage pipes 400 are attracted and reset into the second placing grooves 222 together through the magnetic attraction interaction between the clamping jaws 230 and the second placing grooves 222, and then the transmission group 100 drives the movable rack to gather and move upwards to move out of the storage rack 300, so that the clamping of the frozen storage pipes 400 is completed. The number of the first placing grooves 330, the clamping jaws 230 and the second placing grooves 222 is large, and a plurality of freezing pipes 400 can be simultaneously clamped.
By downwards moving and unfolding the tube taking set 200, the tube taking set 200 enters the storage rack 300, the movable rack is quickly unfolded in the storage rack 300, the tube taking set 200 is matched with the storage rack 300 to realize the accurate transfer of the frozen storage tube 400, the tube taking is not needed manually, the operation time is short, and the efficiency is greatly improved; only the freezing tube 400 which needs to be taken out is transferred, so that the rest freezing tubes 400 which do not need to be taken out are not exposed to the normal temperature environment, and thus the biological sample is not easy to be inactivated. Through the cooperation between getting nest of tubes 200, storage frame 300, cryopreservation pipe 400, solve the dangerous, inefficiency of manual access process that current liquid nitrogen container 500 access equipment exists, the easy problem of inactivating of biological sample.
Referring to fig. 1, 2, 14, 16, 18, and 20, in the present embodiment, the moving rack includes an upper moving disk 210, a lower moving disk 250, an upper moving rack 220, and a lower moving rack 240; the upper moving frame 220 and the lower moving frame 240 are vertically arranged, the top end of the upper moving frame 220 is in sliding connection with the upper moving disc 210, the bottom end of the lower moving frame 240 is in sliding connection with the lower moving disc 250, and the outer side of the upper moving frame 220 can be in sliding fit with the inner side of the lower moving frame 240 when the moving frame is in a unfolding state so that the upper moving frame 220 and the lower moving frame 240 are unfolded side by side; in the state that the moving frames are gathered, the bottom end of the upper moving frame 220 can be in sliding fit with the top end of the lower moving frame 240, so that the upper moving frame 220 and the lower moving frame 240 are overlapped and gathered; the upper moving frame 220 and the lower moving frame 240 are provided with a plurality of second placing grooves 222; the transmission set 100 is connected to the upper moving disc 210 and the lower moving disc 250 at the same time, and the transmission set 100 is used for driving the upper moving disc 210 and the lower moving disc 250 to approach or separate from each other, so that the upper moving frame 220 and the lower moving frame 240 are switched between the unfolded state and the gathered state.
The upper moving disc 210, the upper moving frame 220, the lower moving frame 240 and the lower moving disc 250 are sequentially arranged from top to bottom in a gathering state, and the bottom of the upper moving frame 220 is in sliding fit with the top of the lower moving frame 240; the upper moving frame 220 slides from the top of the lower moving frame 240 to the inner side of the lower moving frame 240, so that the outer side of the upper moving frame 220 is in sliding fit with the inner side of the lower moving frame 240, and the moving frame is in an unfolding state. I.e., the bottom and outer side of the upper moving frame 220, and the top and inner side of the lower moving frame 240, are continuously slidably engaged, thereby achieving a switch between the two states. In the gathering state, the upward moving frame 220 is overlapped at the top of the downward moving frame 240, the cross-sectional area is small, the upward moving frame 220 and the downward moving frame 240 are staggered in the unfolding state, the corresponding number of the first placing grooves 330 in the storage frame 300 can be increased, and the number of the freezing storage tubes 400 clamped each time is increased.
Specifically, the lower moving frames 240 are located below the upper moving frames 220, a lower moving frame 240 is correspondingly disposed below each upper moving frame 220, the upper moving disc 210 is located above the upper moving frame 220 and used for limiting the upper moving frame 220, the lower moving disc 250 is located below the lower moving frame 240, and the lower moving disc 250 supports the limiting lower moving frame 240.
Referring to fig. 5 and 6, the upper moving disk 210 is provided with a rectangular hole 211, a stopper 212, an upper axial groove 213, and an upper radial groove 214; the rectangular hole 211 is located in the middle of the main body of the upper moving disc 210, and the rectangular hole 211 is engaged with the support bar 150 mentioned below so that the upper moving disc 210 can move up and down with respect to the support bar 150. The limiting frame 212 is located at one side of the rectangular hole 211, and the limiting frame 212 is fixedly connected with the second motor 180, so that the limiting frame 212 limits the second motor 180. The upper axial grooves 213 are uniformly distributed on the outer circumference of the upper moving disc 210, and four upper axial grooves 213 are provided, the number of the upper axial grooves 213 is determined according to the situation, the upper axial grooves 213 are used for sliding fit with strip protrusions 310 which are mentioned below, and the upper axial grooves 213 play a limiting role; the upper radial grooves 214 are located at the lower end of the main body of the upper moving disc 210, the upper radial grooves 214 are arranged along the radial direction of the upper moving disc 210, eight upper radial grooves 214 are uniformly arranged, and the upper radial grooves 214 play a limiting role according to the situation.
Referring to fig. 11, the lower moving disk 250 is provided with a second square hole 251, a lower radial groove 252, and a lower axial groove 253. The second square hole 251 is located at the middle of the body of the lower moving disc 250, and the second square hole 251 is fixedly connected with the support bar 150 mentioned below. The lower radial grooves 252 are positioned at the upper end of the main body of the lower moving disc 250, the lower radial grooves 252 are arranged along the radial direction of the lower moving disc 250, the number of the lower radial grooves 252 is consistent with that of the lower moving frames 240, and the bottom ends of the lower moving frames 240 are in sliding fit with the lower radial grooves 252. The lower axial grooves 253 are uniformly distributed on the outer circumference of the lower moving disc 250, and four lower axial grooves 253 are arranged according to the situation, and the lower axial grooves 253 are in sliding fit with strip protrusions 310 which are described below, so that the lower axial grooves 253 play a limiting role.
Referring to fig. 12, 13 and 15, in the present embodiment, the storage rack 300 includes a plurality of storage blades 320, the plurality of storage blades 320 are circumferentially arranged to enclose a hollow column structure, each storage blade 320 is provided with a gap opening toward the hollow position, and each storage blade 320 is provided with a plurality of first placement grooves 330 on both sides of the gap; the number of the upward moving frames 220 and the number of the downward moving frames 240 are multiple, the upward moving frames 220 and the downward moving frames 240 are all arranged around the circle center connecting line of the upward moving disc 210 and the circle center connecting line of the downward moving disc 250, the top ends of the upward moving frames 220 are respectively connected with the upward moving disc 210 in a sliding manner along the radial direction of the upward moving disc 210, the bottom ends of the downward moving frames 240 are respectively connected with the downward moving disc 250 in a sliding manner along the radial direction of the downward moving disc 250, an upward moving frame inclined surface 227 is arranged at the bottom end of each upward moving frame 220, a downward moving frame inclined surface 247 is arranged at the top end of each downward moving frame 240, and the upward moving frame inclined surface 227 is in sliding fit with the downward moving frame inclined surface 247; the transmission set 100 is used for driving the up-moving frame 220 and the down-moving frame 240 to extend into the gap in the unfolded state, so that the second placement groove 222 corresponds to the first placement groove 330 in position; or the drive train 100 is used to drive the up-shift carriage 220 and the down-shift carriage 240 away from the liquid nitrogen tank 500 in a bunched state.
Referring to fig. 16 and 17, the bottom of the up-moving frame 220 and the top of the down-moving frame 240 are in sliding fit through an inclined plane, so that the down-moving frame 240 can be moved to the inner side of the down-moving frame 240 in the process of driving the up-moving frame 220 to move downwards, and the up-moving frame 220 is switched from the sliding fit between the bottom and the down-moving frame 240 to the sliding fit between the outer side of the up-moving frame 220 and the inner side of the down-moving frame 240.
The bottom of the upper moving frame 220 is provided with an upper moving frame inclined surface 227, the upper moving frame inclined surface 227 is positioned at the lower end of the upper moving frame 220 main body, and the upper moving frame inclined surface 227 plays a role in pushing. The top of the lower frame 240 is provided with a lower frame inclined surface 247, the lower frame inclined surface 247 is positioned at the upper end of the main body of the lower frame 240, and the lower frame inclined surface 247 is matched with the upper frame inclined surface 227. The downward frame inclined surface 247 and the upward frame inclined surface 227 are inclined from top to bottom, and the outer side is higher than the inner side, that is, the outer side is inclined downward from the outer periphery to the center direction of the circle, and the height at the outer circle is higher than the center.
The transmission group 100 drives the upward moving frame 220 to move to the inner side of the downward moving frame 240, pushes the downward moving frame 240 to move into the gap, then pushes the upward moving frame 220 and the downward moving frame 240 to enter the gap together, so as to realize the correspondence between the first placing groove 330 and the second placing groove 222, and after the freezing storage tube 400 is clamped, the transmission group 100 drives the upward moving frame 220 to move upwards, and simultaneously, the downward moving frame 240 gathers together until the upward moving frame 220 moves to the top of the downward moving frame 240, and the resetting and the clamping of the freezing storage tube 400 are completed.
In this embodiment, the transmission set 100 includes a first driving mechanism and a second driving mechanism; the first driving mechanism is arranged on the liquid nitrogen tank 500, and is connected with the second driving mechanism, and the first driving mechanism is used for driving the first driving mechanism, the upper moving disc 210, the lower moving disc 250, the upper moving frame 220 and the lower moving frame 240 to synchronously move in or out of the storage frame 300; the second driving mechanism is connected to the upper moving disk 210 and the lower moving disk 250, and is used for driving the upper moving disk 210 and the lower moving disk 250 to approach or separate from each other so as to spread or gather the upper moving frame 220 and the lower moving frame 240.
The first driving mechanism is used for driving the movable frame to move up and down integrally. The second driving mechanism is used for driving the upward moving frame 220 and the downward moving frame 240 to slide relatively, so as to realize unfolding and gathering. After the first driving mechanism drives the movable rack to enter the storage rack 300, the second driving mechanism drives the upper movable rack 220 and the lower movable rack 240 to slide relatively, so that the expansion is realized, the clamping of the frozen storage tube 400 is completed, and after the clamping is completed, the second driving mechanism drives the upper movable rack 220 and the lower movable rack 240 to slide relatively, so that the gathering is realized. The first driving mechanism drives the moving rack to move out of the storage rack 300. The drive times of the first drive mechanism and the second drive mechanism may have time periods that overlap.
In this embodiment, the first driving mechanism includes a first motor 110, a screw 120, a supporting frame 130, and a moving plate 140; the support frame 130 is fixed on the liquid nitrogen tank 500, the screw 120 is rotatably arranged in the support frame 130 along the vertical direction, the moving plate 140 is slidably arranged in the support frame 130 along the vertical direction, the moving plate 140 is in threaded connection with the screw 120, and the moving frame is connected with the moving plate 140; the first motor 110 is fixed on the support 130, and the first motor 110 is connected with the screw 120; the first motor 110 is used to drive the screw 120 to rotate to drive the moving plate 140 and the moving frame to reciprocate in a vertical direction to move in or out of the storage frame 300.
Referring to fig. 3 and 4, in particular, the transmission set 100 is located above the whole, and the transmission set 100 plays a role in transmission. The first motor 110 provides power. The screw 120 is located below the first motor 110, and the screw 120 is fixedly connected with a motor shaft of the first motor 110. The support 130 is provided with a first round hole 131 and a limiting slide 132, the first round hole 131 is positioned at the upper end of the main body of the support 130, and the first round hole 131 is connected with the screw 120 through a bearing. The limiting slide way 132 is located below the first round hole 131, and the limiting slide way 132 plays a limiting role. The moving plate 140 is located in front of the first motor 110, and the rear end of the moving plate 140 is slidably matched with the limiting slideway 132. The moving plate 140 is provided with a first square hole 141 and a second round hole 142; the first square hole 141 is positioned at the front end of the main body of the moving plate 140; the second round hole 142 is located at the rear end of the main body of the moving plate 140, a threaded structure is arranged inside the second round hole 142, and the second round hole 142 is in threaded connection with the screw 120.
The first motor 110 drives the screw 120 to rotate, and the screw 120 rotates to drive the moving plate 140 to move up and down along the limiting slideway 132, so as to drive the moving frame to move up and down.
In this embodiment, the second driving mechanism includes a support bar 150, a rack 160, a gear 170, and a second motor 180; the support bar 150 is arranged in the vertical direction, the top end of the support bar 150 is fixed with the moving plate 140, and the racks 160 are fixed on the support bar 150 side by side in the vertical direction; the upper moving disc 210, the upper moving frame 220 and the lower moving frame 240 are movably sleeved on the peripheries of the support bar 150 and the rack 160, and the lower moving disc 250 is fixed with the bottom end of the support bar 150; the second motor 180 and the gear 170 are fixed to the top of the upper moving disk 210, the second motor 180 is connected to the gear 170, the gear 170 is engaged with the rack 160, and the second motor 180 is used to drive the gear 170 to move along the rack 160 to drive the upper moving disk 210 to approach or separate from the lower moving disk 250.
The support bar 150 is fixed between the moving plate 140 and the lower moving disc 250, and the second motor 180 drives the upper moving disc 210 and the lower moving frame 240 to move up and down in the process of driving the gear 170 to move along the rack 160, so as to realize sliding fit with the lower moving frame 240 at the top and inside.
Specifically, the support bar 150 is located at the bottom of the front end of the moving plate 140, and the top of the support bar 150 is fixedly connected with the moving plate 140. The rack 160 is located at one side of the support bar 150, and the rack 160 is fixedly connected with the support bar 150. The gear 170 is positioned on one side of the rack 160, and the gear 170 is in meshed transmission with the rack 160. The second motor 180 is located at the front end of the gear 170, and a motor shaft of the second motor 180 is fixedly connected with the gear 170. The tube picking up set 200 is located at the front side of the driving set 100, and the driving set 100 can control the tube picking up set 200 to move.
Referring to fig. 5 and 6, the upper moving disk 210 is positioned under the gear 170, the upper moving frame 220 is positioned under the upper moving disk 210, and the upper end of the upper moving frame 220 is slidably engaged with the upper radial groove 214.
The upper moving frame inclined surface 227 is positioned at the lower end of the main body of the upper moving frame 220, and the upper moving frame inclined surface 227 plays a role in pushing. The downward moving frames 240 are located below the upward moving frames 220, a downward moving frame 240 is correspondingly arranged below each upward moving frame 220, a fourth magnet (not shown) is installed on one side, close to the supporting rod 150, of the downward moving frame 240, and the fourth magnet on the downward moving frame 240 and the third magnet on the lower half section of the supporting rod 150 are attracted mutually. The lower frame incline 247 is located at the upper end of the body of the lower frame 240, and the lower frame incline 247 mates with the upper frame incline 227. The lower moving disc 250 is located below the lower moving frame 240, and the lower moving disc 250 supports the limiting lower moving frame 240.
The lower moving disc 250 is provided with a second square hole 251, the second square hole 251 is located at the middle part of the main body of the lower moving disc 250, and the second square hole 251 is fixedly connected with the support bar 150.
In this embodiment, the transmission set 100 further includes a first magnet, a second magnet, a third magnet, and a fourth magnet; the first electromagnet is fixed on the upper half section of the support bar 150 and can be electrified positively and negatively, the second magnet is fixed on the upper moving frame 220, and the first electromagnet is used for being mutually repelled with the second magnet so as to enable the upper moving frame 220 to move away from the support bar 150, or the first electromagnet is used for being mutually attracted with the second magnet so as to enable the upper moving frame 220 to move close to the support bar 150; the third magnet fixes the lower half of the support bar 150 and the fourth magnet is fixed to the lower frame 240, and the third magnet and the fourth magnet are attracted to each other.
The side of the upper moving frame 220 body away from the magnet is provided with a T-shaped protrusion 221. The lower moving frame 240 is provided with a T-shaped groove 241 at one side near the support bar 150, and the T-shaped groove 241 is slidably engaged with the T-shaped protrusion 221. The upward movement of the frame 220 moves downward such that the T-shaped recess 241 gradually moves into up-down alignment with the T-shaped protrusion 221, at which time the upward movement of the frame 220 continues to move downward such that the T-shaped recess 241 slides in engagement with the T-shaped protrusion 221 until the bottom end of the upward movement of the frame 220 coincides with the lower radial slot 252.
The upper half of the support bar 150 is mounted with a first electromagnet (not shown) whose magnetism is changed according to energization, the upper moving frame 220 is mounted with a second magnet, and the upper half of the support bar 150 and the upper moving frame 220 are attracted to or repelled from each other. The third magnet is installed at the lower half of the support bar 150, the fourth magnet is installed at the lower moving frame 240, and the fourth magnet on the lower moving frame 240 is attracted to the third magnet at the lower half of the support bar 150.
The second driving mechanism drives the upper moving disc 210 to move downwards, drives the upper moving frame 220 to move away from the supporting rod 150, then pushes the lower moving frame 240 to move away from the supporting rod 150 in a bevel matching way until the upper moving frame 220 is positioned on the inner side of the lower moving frame 240, then adjusts the magnetism of the first electromagnet on the upper half section of the supporting rod 150, and repels to drive the upper moving frame 220 to move continuously in a direction away from the supporting rod 150, so that the lower moving frame 240 is driven to move continuously into a gap together. After the frozen tube 400 is clamped, the first electromagnetic ferromagnetism of the upper half section of the support rod 150 is adjusted, and the upper moving frame 220 is attracted to drive the lower moving frame 240 to move close to the support rod 150. The first driving mechanism drives the upward moving frame 220 to move upwards, and drives the downward moving frame 240 to approach the supporting rod 150 under the attraction of the third magnet at the lower half section of the supporting rod 150 and the fourth magnet of the downward moving frame 240 until the upward moving frame 220 is positioned above the downward moving frame 240, so that the reset is completed.
Referring to fig. 7, 8 and 10, in the present embodiment, a first chute 223 is formed in the second placement groove 222 along the thickness thereof; the first chute 223 is provided with a fifth electromagnet 224, a sixth electromagnet 225 and a seventh electromagnet 226 in sequence along the thickness direction, and the fifth electromagnet 224 and the seventh electromagnet 226 are respectively positioned at two sides of the second placing groove 222; the clamping jaw 230 is slidably arranged in the first sliding groove 223 along the thickness direction of the second placing groove 222, an eighth magnet 234 is arranged on the outer wall of the clamping jaw 230, and the eighth magnet 234 is attracted to the sixth magnet 225; the eighth magnet 234 is used to repel or attract the fifth electromagnet 224 so that the clamping jaw 230 can reciprocate between the first sliding groove 223 and the first placing groove 330 from one side of the fifth electromagnet 224 of the second placing groove 222; or eighth magnet 234 is used to repel or attract with seventh electromagnet 226 so that jaw 230 can reciprocate between first runner 223 and first runner 330 from one side of seventh electromagnet 226 of second runner 222.
The second placing grooves 222 are located inside the body of the upper moving frame 220, and the number of the second placing grooves 222 is determined according to the number of the freezing storage tubes 400. The first sliding groove 223 is located at the left and right sides of the inside of the second placing groove 222, and the first sliding groove 223 is used for limiting. A fifth electromagnet 224 is located below the first runner 223, the fifth electromagnet 224 changing magnetism according to energization. The fifth electromagnet 224 is located on one side of the sixth magnet 225, the seventh electromagnet 226 is located on the other side of the sixth magnet 225, and the fifth electromagnet 224 and the seventh electromagnet 226 change magnetism according to energization.
The lower moving frame 240 is provided with a T-shaped groove 241, a second placing groove 222, a first sliding groove 223, a fifth electromagnet 224, a sixth magnet 225, a seventh electromagnet 226, and a lower moving frame slope 247. The T-shaped groove 241 is located at one side of the lower moving frame 240, and the T-shaped groove 241 is matched and slid with the T-shaped protrusion 221. The second placing grooves 222 are located inside the body of the lower rack 240, and the number of the second placing grooves 222 is determined according to the number of the freezing pipes 400.
Referring to fig. 9, in the present embodiment, the clamping jaw 230 includes a first clamping portion, a second clamping portion, and a connecting member; a clamping space for clamping the freezing storage tube 400 is formed between the first clamping part and the second clamping part, two clamping openings communicated with the clamping space are respectively formed between two opposite side edges of the first clamping part and the second clamping part, and the two clamping openings are respectively provided with an elastic convex plate 232 so that the freezing storage tube 400 can move into or move out of the clamping space; the eighth magnet 234 is fixed to the back of the first clamping portion or the second clamping portion and can magnetically cooperate with the sixth magnet 225 on the first chute 223; the bottoms of the first clamping part and the second clamping part are fixed through the connecting piece, so that the first clamping part and the second clamping part can synchronously move.
Referring to fig. 9 and 10, the clamping jaw 230 is mounted on the first sliding groove 223 of the upper moving frame 220. The clamping jaw 230 includes a clamping surface 231, a raised plate 232, a limiting plate 233, and an eighth magnet 234. The clamping surface 231 is located at the middle part of the clamping jaw 230 body, the clamping surface 231 is hollow and circular, and the clamping surface 231 limits the freezing storage tube 400. The convex plates 232 are positioned at the front end and the rear end of the clamping surface 231, the convex plates 232 are openings of the clamping surface 231, and the convex plates 232 are made of rubber, so that the freezing storage tube 400 can enter the clamping surface 231 from the convex plates 232. The limiting plates 233 are located at two sides of the clamping surface 231, and the limiting plates 233 are in sliding fit with the first sliding grooves 223. An eighth magnet 234 is located in the middle of the limit plate 233, and the eighth magnet 234 guides the movement of the clamping jaw 230.
Referring to fig. 12, in the present embodiment, a second chute 340, a limiting circular groove 350 and a circular groove outlet 360 are disposed in the first placement groove 330, the second chute 340 is disposed along the thickness direction of the first placement groove 330 and is used for sliding fit with the clamping jaw 230, the limiting circular groove 350 is disposed at the bottom of the first placement groove 330, and the limiting circular groove 350 is used for limiting the bottom of the freezing tube 400; the circular groove opening is formed at the side of the limit circular groove 350, and the circular groove outlet 360 has elasticity, and the circular groove opening is used for the freezing storage tube 400 to move in or out of the limit circular groove 350.
The storage rack 300 is located below the transmission set 100, and the storage rack 300 is used for storing the freezing storage tubes 400. The storage rack 300 is provided with a long protrusion 310, a storage blade 320, a first placement groove 330, a second sliding groove 340, a limit circular groove 350, a circular groove outlet 360, and a partition 370, see fig. 13. The long-strip protrusion 310 is located at the middle of the main body of the storage rack 300, and the long-strip protrusion 310 is matched with the upper axial groove 213 and the lower axial groove 253, so that the long-strip protrusion 310 limits the upper moving disc 210 and the lower moving disc 250. The storage blades 320 are uniformly distributed on the circumference of the main body of the storage rack 300, the number of the storage blades 320 is consistent with that of the upward moving rack 220 and the downward moving rack 240, and gaps for passing through the upward moving rack 220 and the downward moving rack 240 are arranged between each group of storage blades 320. The first placing grooves 330 are located inside the storage blades 320, and the number of the first placing grooves 330 is determined according to the freezing storage tubes 400. The second sliding groove 340 is positioned at the left side and the right side of the interior of the first placing groove 330, and the second sliding groove 340 and the limiting plate 233 slide in a matched manner; the limiting circular groove 350 is positioned at the lower end of the first placing groove 330, and the limiting circular groove 350 limits the freezing storage tube 400; the circular groove outlet 360 is positioned at the front end of the limiting circular groove 350, and the circular groove outlet 360 is made of rubber, so that the freezing tube 400 can be separated from the limiting circular groove 350 by extruding the circular groove outlet 360; the partition plate 370 is positioned in the middle of the storage blade 320, and the partition plate 370 is used for limiting; the freezing tubes 400 are installed in the storage rack 300 in an amount according to circumstances.
Referring to fig. 13, a liquid nitrogen tank 500 is provided with an access port 510 and a limit square groove 520; the access port 510 is positioned in the middle of the liquid nitrogen tank 500 main body, and when the freezing storage tube 400 is not taken out, the lower moving disc 250 is overlapped and sealed with the access port 510; the limiting square groove 520 is positioned at the upper end of the liquid nitrogen tank 500 main body, and the limiting square groove 520 limits the supporting frame 130.
According to the liquid nitrogen tank access device for taking a plurality of liquid nitrogen tanks at a time, the working principle of the liquid nitrogen tank access device for taking a plurality of liquid nitrogen tanks at a time is as follows: in the initial state, as shown in fig. 1, the lower moving disc 250 is sealed by overlapping with the access opening 510, the first electromagnet positioned at the upper half section of the support bar 150 is positively energized, so that the second magnet on the upper moving frame 220 and the first electromagnet positioned at the upper half section of the support bar 150 generate attractive force, thereby limiting the upper moving frame 220, the eighth magnet 234 on the clamping jaw 230 and the sixth magnet 225 are magnetically attracted, so that the clamping jaw 230 is limited on the upper moving frame 220 and the lower moving frame 240, when the frozen storage tube 400 is to be taken out, the first motor 110 is started, the first motor 110 drives the screw 120 to rotate, the screw 120 rotates to enable the moving plate 140 to move downwards, the moving plate 140 drives the support bar 150 to move downwards, the whole tube taking set 200 moves downwards until the bottom end of the lower moving frame 240 coincides with the top end of the partition plate 370, the first motor 110 is stopped to be started, then the second motor 180 is started, the gear 170 is driven to rotate, then the gear 170 is meshed with the rack 160 to drive the upper moving disc 210 and the upper moving frame 220 to move downwards, the upper moving frame 227 presses the inclined surface of the lower moving frame 240 to resist the attractive force generated by the fourth magnet and the third magnet on the upper magnet 150 to move outwards along the radial direction 252 as shown in fig. 14; the first electromagnet on the support bar 150 remains positively energized and the up-shift rack 220 moves downward so that the T-shaped recess 241 gradually moves into up-down alignment with the T-shaped protrusion 221 as shown in fig. 18; at this time, the upper moving frame 220 continues to move downwards, so that the T-shaped groove 241 and the T-shaped protrusion 221 slide in a matched manner until the bottom end of the upper moving frame 220 coincides with the lower radial groove 252, as shown in fig. 18; then stopping starting the second motor 180, and reversely electrifying the first electromagnet positioned on the support rod 150, so that the second magnet on the upward moving frame 220 and the first electromagnet on the support rod 150 generate repulsive force, thereby pushing the upward moving frame 220 to move outwards along the upper radial groove 214 and the lower radial groove 252, and further pushing the downward moving frame 240 to move outwards along the gap arranged in the middle of the storage blade 320 at the same time until the downward moving frame 240 abuts against the inner wall of the liquid nitrogen tank 500, as shown in fig. 19 and 20; so that the upper moving frame 220 and the lower moving frame 240 are positioned between the adjacent storage blades 320 and aligned in parallel with each other, at this time, if a certain freezing tube 400 in the storage frame 300 is wanted, the fifth electromagnet 224 or the seventh electromagnet 226 at the position corresponding to the freezing tube 400 on the upper moving frame 220 and the lower moving frame 240 is electrified, so that the fifth electromagnet 224 or the seventh electromagnet 226 generates a repulsive force with the eighth magnet 234, so that the clamping jaw 230 moves towards the freezing tube 400 along the second sliding groove 340, and the convex plate 232 at the position facing the freezing tube 400 presses the freezing tube 400, as shown in fig. 21; further, the freezing tube 400 enters the clamping surface 231, at this time, the fifth electromagnet 224 is powered off, and the sixth magnet 225 and the eighth magnet 234 attract each other, so that the clamping jaw 230 brings the freezing tube 400 to overcome the resistance of the circular groove outlet 360 and return to the initial position of the clamping jaw 230, as shown in fig. 22; at this time, the frozen storage tube 400 is already transferred to the up-moving frame 220 or the down-moving frame 240, if the frozen storage tube 400 is the storage blade 320 on the other side, the seventh electromagnet 226 is controlled to be powered off to realize the transfer of the frozen storage tube 400, when all the frozen storage tubes 400 to be taken are transferred to the up-moving frame 220 and the down-moving frame 240, the first electromagnet positioned on the support rod 150 is powered on in the forward direction, so that the magnet on the up-moving frame 220 and the electromagnet on the support rod 150 generate attractive force, and the up-moving frame 220 moves inwards with the down-moving frame 240 to restore to the state of fig. 15; then, the second motor 180 is started to gradually move the upward moving frame 220, and the downward moving frame 240 moves toward the supporting rod 150 following the upward movement of the upward moving frame 220 due to the attraction force generated by the fourth magnet on the supporting rod 150 and the third magnet on the supporting rod 150, as shown in fig. 14; the first motor 110 is then started, so that the tube-taking set 200 is moved upward as a whole, and finally returns to the state of fig. 1, and the whole process is ended, and the freezing tube 400 is successfully taken out.
The liquid nitrogen tank access equipment for taking a plurality of liquid nitrogen tanks at a time has the following advantages:
by downwards moving and unfolding the tube taking set 200, the tube taking set 200 enters the storage rack 300, the movable rack is quickly unfolded in the storage rack 300, the tube taking set 200 is matched with the storage rack 300 to realize the accurate transfer of the frozen storage tube 400, the tube taking is not needed manually, the operation time is short, and the efficiency is greatly improved; only the freezing tube 400 which needs to be taken out is transferred, so that the rest freezing tubes 400 which do not need to be taken out are not exposed to the normal temperature environment, and thus the biological sample is not easy to be inactivated. Through the cooperation between getting nest of tubes 200, storage frame 300, cryopreservation pipe 400, solve the dangerous, inefficiency of manual access process that current liquid nitrogen container 500 access equipment exists, the easy problem of inactivating of biological sample.
The present invention is not limited to the above embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims (10)

1. A liquid nitrogen tank access apparatus for taking a plurality of liquid nitrogen tanks at a time, comprising:
the storage rack (300) and the liquid nitrogen tank (500), wherein the storage rack (300) is fixed in the liquid nitrogen tank (500), the storage rack (300) is provided with a plurality of first placing grooves (330), and the first placing grooves (330) are used for placing the freezing storage pipes (400);
a tube set (200), the tube set (200) comprising a mobile frame and a plurality of jaws (230); the movable frame can be unfolded or gathered, the movable frame is provided with a plurality of second placing grooves (222), and the clamping jaws (230) are in one-to-one correspondence with the second placing grooves (222) and are magnetically assembled together;
the transmission group (100) is arranged on the liquid nitrogen tank (500), the transmission group (100) is connected with the movable frame, and the transmission group (100) is used for driving the movable frame to move so as to enable the movable frame to move into the storage frame (300) and spread out, or move out of the storage frame (300) and gather;
each second placement groove (222) is used for corresponding to the first placement groove (330) when the movable frame is unfolded; the clamping jaw (230) in each second placing groove (222) is used for leaving the second placing groove (222) under the action of magnetic repulsion so as to enter the first placing groove (330) and clamp the freezing and storing tube (400), or the clamping jaw (230) is used for resetting under the action of magnetic attraction so as to clamp and move the clamped freezing and storing tube (400) into the second placing groove (222).
2. The liquid nitrogen tank access apparatus of claim 1, wherein said plurality of liquid nitrogen tanks are taken at a single time, wherein:
the movable frame comprises an upper movable disc (210), a lower movable disc (250), an upper movable frame (220) and a lower movable frame (240); the upper moving frame (220) and the lower moving frame (240) are vertically arranged, the top end of the upper moving frame (220) is in sliding connection with the upper moving disc (210), the bottom end of the lower moving frame (240) is in sliding connection with the lower moving disc (250), and in the unfolding state of the moving frame, the outer side of the upper moving frame (220) can be in sliding fit with the inner side of the lower moving frame (240), so that the upper moving frame (220) and the lower moving frame (240) are unfolded side by side; when the movable frames are in a gathering state, the bottom end of the upper movable frame (220) can be in sliding fit with the top end of the lower movable frame (240) so as to enable the upper movable frame (220) to be overlapped and gathered with the lower movable frame (240); the upper moving frame (220) and the lower moving frame (240) are respectively provided with a plurality of second placing grooves (222);
the transmission group (100) is connected with the upper moving disc (210) and the lower moving disc (250) at the same time, and the transmission group (100) is used for driving the upper moving disc (210) and the lower moving disc (250) to be close to or far away from each other so as to enable the upper moving frame (220) and the lower moving frame (240) to be switched between the unfolding state and the gathering state.
3. The liquid nitrogen tank access apparatus of claim 2, wherein said plurality of liquid nitrogen tanks are taken at a single time, wherein:
the storage rack (300) comprises a plurality of storage blades (320), the storage blades (320) are arranged in a surrounding mode to form a hollow columnar structure, each storage blade (320) is provided with a gap which is open towards a hollow position, and each storage blade (320) is provided with a plurality of first placing grooves (330) on two sides of the gap;
the number of the upward moving frames (220) and the number of the downward moving frames (240) are multiple, the upward moving frames (220) and the downward moving frames (240) are all arranged around the circle center connecting line of the upward moving disc (210) and the circle center connecting line of the downward moving disc (250), the top ends of the upward moving frames (220) are respectively connected with the upward moving disc (210) in a sliding manner along the radial direction of the upward moving disc (210), the bottom ends of the downward moving frames (240) are respectively connected with the downward moving disc (250) in a sliding manner along the radial direction of the downward moving disc (250), an upward moving frame inclined surface (227) is arranged at the bottom end of each upward moving frame (220), and a downward moving frame inclined surface (247) is arranged at the top end of each downward moving frame (240), and the upward moving frame inclined surface (227) is in sliding fit with the downward moving frame inclined surface (247);
The transmission group (100) is used for driving the upward moving frame (220) and the downward moving frame (240) to extend into the gap in the unfolded state so that the second placing groove (222) corresponds to the first placing groove (330) in position; or the transmission group (100) is used for driving the upward moving frame (220) and the downward moving frame (240) to leave the liquid nitrogen tank (500) in a gathering state.
4. A single-access multiple liquid nitrogen tank access device according to claim 3, characterized in that:
the transmission group (100) comprises a first driving mechanism and a second driving mechanism; the first driving mechanism is arranged on the liquid nitrogen tank (500), is connected with the second driving mechanism and is used for driving the first driving mechanism, the upper moving disc (210), the lower moving disc (250), the upper moving frame (220) and the lower moving frame (240) to synchronously move in or out of the storage frame (300); the second driving mechanism is connected with the upper moving disc (210) and the lower moving disc (250), and is used for driving the upper moving disc (210) and the lower moving disc (250) to be close to or far away from each other so as to enable the upper moving frame (220) and the lower moving frame (240) to be unfolded or gathered.
5. The single-access multiple liquid nitrogen tank access apparatus of claim 4, wherein:
the first driving mechanism comprises a first motor (110), a screw (120), a supporting frame (130) and a moving plate (140); the support frame (130) is fixed on the liquid nitrogen tank (500), the screw (120) is rotatably arranged in the support frame (130) along the vertical direction, the movable plate (140) is slidably arranged in the support frame (130) along the vertical direction, the movable plate (140) is in threaded connection with the screw (120), and the movable frame is connected with the movable plate (140); the first motor (110) is fixed on the supporting frame (130), and the first motor (110) is connected with the screw (120); the first motor (110) is used for driving the screw (120) to rotate so as to drive the moving plate (140) and the moving frame to reciprocate along the vertical direction to move in or out of the storage frame (300).
6. The single-access multiple liquid nitrogen tank access apparatus of claim 5, wherein:
the second driving mechanism comprises a supporting rod (150), a rack (160), a gear (170) and a second motor (180); the top end of the supporting rod (150) is fixed with the moving plate (140), and the racks (160) are fixed on the supporting rod (150) side by side along the vertical direction; the upper moving disc (210), the upper moving frame (220) and the lower moving frame (240) are movably sleeved on the peripheries of the supporting rod (150) and the rack (160), and the lower moving disc (250) is fixed with the bottom end of the supporting rod (150); the second motor (180) and the gear (170) are fixed at the top of the upper moving disc (210), the second motor (180) is connected with the gear (170), the gear (170) is meshed with the rack (160), and the second motor (180) is used for driving the gear (170) to move along the rack (160) so as to drive the upper moving disc (210) to be close to or far away from the lower moving disc (250).
7. The single-access multiple liquid nitrogen tank access apparatus of claim 6, wherein:
the transmission group (100) further comprises a first magnet, a second magnet, a third magnet and a fourth magnet which are fixed on the first magnet; the first electromagnet is fixed on the upper half section of the supporting rod (150) and can be electrified positively and negatively, the second magnet is fixed on the upward moving frame (220), the first electromagnet is used for being mutually repelled with the second magnet so as to enable the upward moving frame (220) to move away from the supporting rod (150), or the first electromagnet is used for being mutually attracted with the second magnet so as to enable the upward moving frame (220) to move close to the supporting rod (150); the third magnet is fixed on the lower half section of the supporting rod (150), the fourth magnet is fixed on the downward moving frame (240), and the third magnet and the fourth magnet are attracted mutually.
8. A single-access liquid nitrogen tank access apparatus according to any one of claims 1 to 7, wherein:
a first chute (223) is arranged in the second placing groove (222) along the thickness in a penetrating way; the first sliding groove (223) is sequentially provided with a fifth electromagnet (224), a sixth electromagnet (225) and a seventh electromagnet (226) along the thickness direction, and the fifth electromagnet (224) and the seventh electromagnet (226) are respectively positioned at two sides of the second placing groove (222); the clamping jaw (230) is slidably arranged in the first sliding groove (223) along the thickness direction of the second placing groove (222), an eighth magnet (234) is arranged on the outer wall of the clamping jaw (230), and the eighth magnet (234) and the sixth magnet (225) are attracted; the eighth magnet (234) is used for repelling or attracting the fifth electromagnet (224) so that the clamping jaw (230) can reciprocate between the first sliding groove (223) and the first placing groove (330) from one side of the fifth electromagnet (224) of the second placing groove (222); or the eighth magnet (234) is used for repelling or attracting the seventh electromagnet (226) so that the clamping jaw (230) can reciprocate between the first sliding groove (223) and the first placing groove (330) from one side of the seventh electromagnet (226) of the second placing groove (222).
9. The single-access multiple liquid nitrogen tank access apparatus of claim 8, wherein:
the clamping jaw (230) comprises a first clamping part, a second clamping part and a connecting piece; a clamping space for clamping the frozen storage tube (400) is formed between the first clamping part and the second clamping part, two clamping openings communicated with the clamping space are respectively formed between two opposite side edges of the first clamping part and the second clamping part, and elastic convex plates (232) are respectively arranged on the two clamping openings so that the frozen storage tube (400) can move into or move out of the clamping space; the eighth magnet (234) is fixed on the back surface of the first clamping part or the second clamping part and can be magnetically matched with the sixth magnet (225) on the first sliding groove (223); the bottoms of the first clamping part and the second clamping part are fixed through a connecting piece, so that the first clamping part and the second clamping part can synchronously move.
10. A single-access liquid nitrogen tank access apparatus according to any one of claims 1 to 7, wherein:
a second chute (340), a limiting circular groove (350) and a circular groove outlet (360) are arranged in the first placing groove (330), the second chute (340) is arranged along the thickness direction of the first placing groove (330) and is used for being in sliding fit with the clamping jaw (230), the limiting circular groove (350) is arranged at the bottom of the first placing groove (330), and the limiting circular groove (350) is used for limiting the bottom of the freezing tube (400); the round groove opening is formed in the side portion of the limiting round groove (350), the round groove outlet (360) is elastic, and the round groove opening is used for enabling the freezing storage tube (400) to move in or out of the limiting round groove (350).
CN202311110822.0A 2023-08-29 2023-08-29 Liquid nitrogen tank access equipment capable of taking multiple liquid nitrogen tanks at one time Pending CN117136943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311110822.0A CN117136943A (en) 2023-08-29 2023-08-29 Liquid nitrogen tank access equipment capable of taking multiple liquid nitrogen tanks at one time

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311110822.0A CN117136943A (en) 2023-08-29 2023-08-29 Liquid nitrogen tank access equipment capable of taking multiple liquid nitrogen tanks at one time

Publications (1)

Publication Number Publication Date
CN117136943A true CN117136943A (en) 2023-12-01

Family

ID=88911366

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311110822.0A Pending CN117136943A (en) 2023-08-29 2023-08-29 Liquid nitrogen tank access equipment capable of taking multiple liquid nitrogen tanks at one time

Country Status (1)

Country Link
CN (1) CN117136943A (en)

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