CN218179345U

CN218179345U - Intelligent refrigerator for storing biological samples

Info

Publication number: CN218179345U
Application number: CN202222480302.6U
Authority: CN
Inventors: 肖阳
Original assignee: Shanghai Baoneng Biotechnology Co ltd
Current assignee: Shanghai Baoneng Biotechnology Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2022-12-30
Anticipated expiration: 2032-09-20

Abstract

The utility model discloses an intelligent refrigerator for saving biological sample, include: insulation can casing, the rotary drum storage frame, rotary drum actuating mechanism, tongs transport mechanism and sample test tube access & exit, be provided with test-tube rack discrepancy automatic handling mechanism in the insulation can casing, test-tube rack discrepancy automatic handling mechanism includes the test-tube rack discrepancy box, the region is selected to upper pretreatment region and lower floor's test tube, the upper pretreatment region includes test tube bracket drive module, first test tube bracket, defrosting mechanism, the vision mechanism of shooing and first sealing door, the region is selected to lower floor's test tube includes X axle straight line drive module, Z axle straight line drive module, Y axle clamp claw straight line drive module and second sealing door, all be provided with second test tube bracket on two sets of X axle straight line drive modules, be provided with the test tube clamp claw on the Y axle straight line drive module. The utility model discloses the realization is to the full function flow of the preliminary treatment of sample warehouse entry, realizes that the whole of sample deposits whole and gets and deposit the nimble application that zero got with zero.

Description

Intelligent refrigerator for storing biological samples

Technical Field

The utility model relates to a low temperature storage technical field especially relates to an intelligent refrigerator for saving biological sample.

Background

At present, the low-temperature storage refrigerator at minus 80 ℃ is mainly used in application scenes with small sample size or low investment, the storage operation and management of the low-temperature refrigerator of samples are mainly carried out in a manual mode at present, and the traditional storage mode needs to open a refrigerator door to influence the temperature and humidity environment inside the refrigerator, so that the storage safety of biological samples is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides an intelligent refrigerator for saving biological sample, realizes the full function flow to the preliminary treatment that the sample warehouse entry was gone out, realizes the whole nimble application of getting and zero deposit zero getting of depositing of sample, has absolute advantage for manual operation refrigerator management sample.

In order to solve the technical problem, the utility model discloses a technical scheme be: an intelligent refrigerator for storing biological samples, comprising: the utility model provides a test tube rack, including heat preservation box casing, two sets of rotary drum storage frame, rotary drum actuating mechanism that are used for storing the test-tube rack that set up in the heat preservation box casing, be used for getting get the tongs transport mechanism of putting the test-tube rack in the rotary drum and set up the sample test tube access & exit on heat preservation box casing side, be provided with the test-tube rack automatic handling mechanism that comes in and out with sample test tube access & exit butt joint in the heat preservation box casing, the test-tube rack automatic handling mechanism that comes in and goes out includes that the test-tube rack discrepancy box, upper pretreatment region and lower floor's test tube select the region, but upper pretreatment region sets up on the test-tube rack discrepancy box lateral wall and horizontal motion's first test tube bracket, defrosting mechanism, vision mechanism of shooing and first sealing door, but lower floor's test tube is selected the region and is including two sets of X axle straight line drive module, Z axle straight line drive module, sets up Y axle clamp claw straight line drive module and second sealing door on Z axle straight line drive module, all is provided with the second test tube bracket on two sets of X axle straight line drive module, be provided with the test tube clamping jaw on the Y axle straight line drive module.

In a preferred embodiment of the present invention, the bottom of the first test tube holder and the bottom of the second test tube holder are hollow structures, and the first test tube holder and the second test tube holder are provided with a secondary positioning mechanism.

In a preferred embodiment of the present invention, the secondary positioning mechanism is a solenoid push rod diagonally disposed on the first test tube holder or the second test tube holder, and the solenoid push rod performs a pressing and positioning function on the test tube holders in the first test tube holder and the second test tube holder.

In a preferred embodiment of the present invention, the visual photographing mechanism is disposed below the first test tube holder, and the visual photographing mechanism employs a CCD camera for acquiring two-dimensional code information of each test tube on the first test tube holder.

In a preferred embodiment of the present invention, the gripper transporting mechanism includes a lifting driving assembly and a transporting driving assembly, the lifting driving assembly includes a lifting column disposed in the insulation can housing, a ball screw module disposed on the lifting column, a guiding slide rail disposed at a side of the lifting column, and a fixing plate connected to a slide block on the slide rail, the ball screw module is connected to the fixing plate and can drive the fixing plate to move up and down; the carrying driving assembly comprises a bottom plate, a rotary driving mechanism and a multi-stage telescopic material taking mechanism, the bottom plate is connected with the fixed plate, the rotary driving mechanism is arranged on the multi-stage telescopic material taking mechanism, the rotary driving mechanism is arranged below the multi-stage telescopic material taking mechanism and can drive the multi-stage telescopic material taking mechanism to rotate so as to enable the grippers to grab test tube racks in different directions, the rotary driving mechanism comprises a rotary table driving motor arranged on the bottom plate, and the output end of the rotary table driving motor is connected with a rotating shaft arranged below the multi-stage telescopic material taking mechanism through a belt.

The utility model discloses a preferred embodiment, the flexible feeding agencies of multistage includes one-level revolving stage board, second grade expansion plate, tertiary expansion plate and swing arm drive subassembly, realize sliding connection through first slide rail between second grade expansion plate and the one-level revolving stage board, realize sliding connection through the second slide rail between tertiary expansion plate and the second grade revolving stage board, the both sides of second grade expansion plate are provided with sprocket chain subassembly respectively, swing arm drive subassembly is including setting up in swing arm driving motor and the swing arm of one-level revolving stage board, the one end and the swing arm driving motor of swing arm are connected, the other end set up in the spout of second grade expansion plate below, swing arm driving motor can drive stretching out and the retracting motion of second grade expansion plate and tertiary expansion plate.

In a preferred embodiment of the present invention, the chain wheel and chain assembly comprises a chain wheel disposed diagonally on both sides of the secondary expansion plate and a chain a wound around the chain wheel, one end of the chain a is connected to the primary turntable plate, and the other end of the chain a is connected to the tertiary expansion plate.

In a preferred embodiment of the present invention, the rotary drum storage rack includes a set of concentric inner rotary drum storage rack and outer rotary drum storage rack, rotary drum actuating mechanism sets up in the top of insulation can casing roof, including the inner rotary drum storage rack corotation in drive or the outer rotary drum drive assembly of reversal and drive outer rotary drum storage rack corotation or the outer rotary drum drive assembly of reversal, inner rotary drum storage rack is the same with outer rotary drum storage rack's structure, including the rotary drum, around the rotary drum circumferencial direction layering around locating the freezing frame in the rotary drum and set up the test-tube rack in a plurality of freezing frames, the curb plate and the rotary drum lower plate fixed connection on freezing frame both sides, freezing frame is the sheet metal component, the clearance of adjacent two-layer test-tube rack about freezing in the frame is close to 8MM.

In a preferred embodiment of the present invention, a plurality of freezing racks distributed in an annular shape in the outer rotary storage rack are separated from a group of spaces to form a material-taking station, so that the gripping device can grip the test tube rack on the inner rotary storage rack in the freezing rack.

In a preferred embodiment of the present invention, the inner rotary drum driving assembly includes a first worm driving motor disposed above the top plate of the thermal insulation box housing and a first worm connected to the first worm driving motor, the first worm is engaged with a first gear at the top of the rotating shaft of the inner rotary drum storage rack; the outer rotating cylinder driving assembly comprises a second worm driving motor arranged above a top plate of a shell of the heat preservation box and a second worm connected with the second worm driving motor, and the second worm is meshed with a second gear on the top of a rotating shaft of the outer rotating cylinder storage rack.

The beneficial effects of the utility model are that: the utility model can realize the sorting operation of the test tubes in the refrigerator shell through the automatic carrying mechanism for the test tube rack to pass in and out, realize the full-function flow of the pretreatment of the sample entering and exiting the warehouse, and realize the flexible application of the whole storage and the whole taking and the zero storage and the zero taking of the sample; the tongs realize grabbing an arbitrary set of test-tube rack on the frozen frame in the rotary drum storage frame on the left and right sides through the rotation interaction of lifting and rotating functions and rotary drum storage frame, the tongs are matched with the multistage telescopic material taking mechanism to grab the test-tube rack in two depths, the occupied space is small, the use is convenient, the full-automatic low-temperature access operation of biological samples can be realized, and the working efficiency is effectively improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic structural diagram of an intelligent refrigerator for storing biological samples according to the present invention;

fig. 2 is a schematic structural view of the automatic handling mechanism for in-out test tube rack of the present invention;

FIG. 3 is a schematic structural view of another view angle of the automatic handling mechanism for in-out test tube rack of the present invention

FIG. 4 is a schematic structural diagram of a drum driving mechanism according to the present invention;

fig. 5 is a schematic structural view of a lifting driving assembly and a carrying driving assembly in an intelligent refrigerator for storing biological samples according to the present invention;

fig. 6 is a schematic diagram of an intelligent refrigerator for storing biological samples according to the present invention in an extended state of a transport drive assembly;

fig. 7 is a schematic view of a part of the structure of the extended state of the handling driving assembly in the intelligent refrigerator for storing biological samples according to the present invention;

fig. 8 is a cross-sectional view of a rotating drum storage rack in an intelligent refrigerator for storing biological samples according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the embodiment of the present invention: an intelligent refrigerator for storing biological samples, comprising: insulation can casing 1, set up two sets of rotary drum storage frame 2 that are used for saving the test-tube rack in the insulation can casing, rotary drum actuating mechanism 3, be used for getting the tongs transport mechanism of putting the test-tube rack in the rotary drum and set up sample test tube access & exit 4 on insulation can casing side, wherein, tongs transport mechanism includes lift drive assembly 5 and transport drive assembly 6, be provided with heat preservation 7 on the insulation can casing roof, have-80 ℃ of storage area in the insulation can casing, the equipment top is separated by the heat preservation, guarantee that equipment generates heat and offset each other with the cold volume in storage area, thereby optimize sample storage environment, guarantee sample safety.

The utility model discloses a test tube rack access automatic handling mechanism 8, including test tube rack access box 801, upper preprocessing region and lower floor's test tube selection region, be provided with in the insulation can casing with the test tube rack access automatic handling mechanism of sample test tube access butt joint, the cotton heat preservation of bubble can be set up in the test tube rack access box outside and inside low temperature district realizes the temperature isolation, upper preprocessing region is including setting up test tube rack drive module 802 on test tube rack access box lateral wall, but set up on test tube rack drive module and horizontal motion's first test tube bracket 803, defrosting mechanism 804, vision mechanism 805 of shooing and first sealing door 806, first sealing door adopts the rotation type sealing door, the utilization of inner space is guaranteed to the simple structure realization function, test tube bracket drive module passes through the lead screw and drives first test tube bracket horizontal direction and removes, switch to defrosting, test tube rack and with inside tongs butt joint position, inside tongs can be driven by tongs transport mechanism after first sealing door is opened and pick the test tube, wherein, vision mechanism sets up in the below of first sealing door, adopt the CCD camera for obtaining the two-dimensional code information of every test tube on the first test tube rack, defrosting mechanism adopts current alcohol to clean the test tube rack in order to pass through the clean test tube rack and clean technology, thereby the test tube rack is accomplished more accurate test tube rack.

The test tube picking area of the lower layer comprises two groups of X-axis linear driving modules 807, Z-axis linear driving modules 808 and a Y-axis gripper linear driving module 809 arranged on the Z-axis linear driving modules, second test tube brackets 810 are arranged on the two groups of X-axis linear driving modules, test tube clamping jaws 811 are arranged on the Y-axis linear driving modules, the X-axis linear driving modules comprise two groups of lead screw sliding rails for driving a group of second test tube bracket to realize horizontal X-direction movement and are used for switching tube picking work and gripper butt joint functions, the Z-axis linear driving modules in the vertical direction comprise two groups of linear sliding rails and lead screws, the horizontal Y-axis linear driving modules are realized by a group of lead screws and linear guide rails at moving ends, tube rack picking operation of two groups of upper and lower test tube rack samples is realized through the linkage of XYZ, a group of second test tube brackets can be used as standby test tube brackets, when a background control system controls test tubes required by test tube clamping jaws according to requirements to pick standby test tube brackets after test tube clamping jaws, the standby test tube brackets are driven by the X-axis linear driving modules to move the standby test tube brackets to the position of a second sealing door, the test tube sealing door, the automatic test tube picking mechanism is not only capable of a plurality of lifting test tube brackets after the test tube driving mechanism is opened, and the test tube rack mechanism is used for realizing automatic test tube lifting of the test tube driving mechanism.

Specifically, the bottom of first test tube bracket and second test tube bracket is hollow out construction to make things convenient for the camera to shoot, be provided with secondary positioning mechanism on first test tube bracket and the second test tube bracket, secondary positioning mechanism is for being the solenoid push rod 813 that the diagonal angle set up on first test tube bracket or second test tube bracket, and it has the secondary location function to compress tightly the effect through diagonal angle department solenoid push rod and let the test-tube rack post that falls to the position, improves positioning accuracy, with improve equipment operation security.

As shown in fig. 4-8, there are two sets of the rotating cylinder storage racks, one of the two sets of the rotating cylinder storage racks is a double-cylinder storage rack, which includes an inner rotating cylinder storage rack 21 and an outer rotating cylinder storage rack 22 that are concentrically arranged, the rotating cylinder driving mechanism is arranged above the top plate of the incubator casing, and includes an inner rotating cylinder driving assembly 31 for driving the inner rotating cylinder storage rack to rotate forward or backward and an outer rotating cylinder driving assembly 32 for driving the outer rotating cylinder storage rack to rotate forward or backward, the carrying driving assembly is used for driving the rotation and extension of the gripper to grip the test tube rack in the inner rotating cylinder storage rack and the outer rotating cylinder storage rack, the movement track of the gripper is within the range of inscribed circle formed by the inner rotating cylinder mechanism, the outer rotating cylinder mechanism and the entrance of the test tube rack, the center of the inscribed circle is the rotation center of the gripper, and the structures of the inner rotating cylinder storage rack and the outer rotating cylinder storage rack are the same, including the rotary drum 211, around the rotary drum circumferencial direction layering around locating the interior freezing frame 212 of rotary drum and set up in the test-tube rack of a plurality of freezing framves, freezing curb plate and the lower plate fixed connection of rotary drum on frame both sides, freezing the frame and being sheet metal component, freezing the clearance of depositing the interior test-tube rack of frame and being close 8MM, the rotation axis of the interior revolving tube storage rack of inner circle and outer lane is the pipe, connects through the bearing and realizes the rotation that the inside and outside can not the different angles, a plurality of freezing frames that are the annular distribution in the outer rotary drum storage rack play a set of space and form and get material station 15, with the convenience the tongs snatchs the test-tube rack of freezing the interior rotary drum storage rack of interior, outer lane, the tongs can realize two deep snatchs, the setting up of the two-layer rotary drum storage rack of interior, outer lane can save more biological samples, compare in only individual layer freezing frame form in the past, double-layer stock has very big advantage, saves the volume more.

Specifically, the inner rotary drum driving component comprises a first worm driving motor 311 arranged above a top plate of a shell of the heat preservation box and a first worm 312 connected with the first worm driving motor, and the first worm is meshed with a first gear 313 at the top of a rotating shaft of the inner rotary drum storage rack; the outer rotary drum driving assembly comprises a second worm driving motor 321 arranged above a top plate of a shell of the heat preservation box and a second worm 322 connected with the second worm driving motor, the second worm is meshed 323 with a second gear at the top of a rotating shaft of the outer rotary drum storage rack, the inner rotary drum driving assembly and the outer rotary drum driving assembly are both connected with manual rotary drum driving assemblies, each manual rotary drum driving assembly comprises a parallel shaft fixing frame 9 and a parallel shaft 10 rotatably arranged on the parallel shaft fixing frame, one end of each parallel shaft is in transmission connection with one end of each first worm through a chain B11, and the manual rotary drum driving assemblies can be used for manually rotating the inner rotary drum storage rack and are used for manually rotating the phase rotary drum storage rack under the condition of power failure.

The lifting driving assembly 5 comprises a lifting upright post 51 arranged in the incubator shell, a ball screw module 52 arranged on the lifting upright post, a guide slide rail 53 arranged on the side edge of the lifting upright post, and a fixing plate 54 connected with a slide block on the slide rail, wherein the ball screw module is connected with the fixing plate and can drive the fixing plate to do lifting motion, the carrying driving assembly 6 comprises a bottom plate 601 connected with the fixing plate, a rotary driving mechanism and a multi-stage telescopic material taking mechanism, a gripper is arranged on the multi-stage telescopic material taking mechanism, the rotary driving mechanism is arranged below the multi-stage telescopic material taking mechanism and can drive the multi-stage telescopic material taking mechanism to rotate so as to facilitate the gripper to grip test tube racks in different directions, the rotary driving mechanism comprises a rotary table driving motor 602 arranged on the bottom plate, the output end of the rotary table driving motor is connected with a rotating shaft 613 arranged below a one-stage rotary table plate through a belt 603, and the rotary interaction of the lifting and the rotation with the rotary drum storage rack realizes the gripping of any one group of the inner and outer rings on the left side and the right side.

The multistage telescopic material taking mechanism comprises a first-stage rotating table plate 604, a second-stage telescopic plate 605, a third-stage telescopic plate 606 and a swing arm driving assembly, wherein the second-stage telescopic plate is in sliding connection with the first-stage rotating table plate through a first sliding rail 607, the third-stage telescopic plate is in sliding connection with the second-stage rotating table plate through a second sliding rail 608, chain wheel chain assemblies are arranged on two sides of the second-stage telescopic plate respectively, the swing arm driving assembly comprises a swing arm driving motor 609 arranged on the first-stage rotating table plate and a swing arm 600, one end of the swing arm is connected with a swing arm driving motor, the other end of the swing arm is arranged in a sliding groove 610 below the second-stage telescopic plate, and the swing arm driving motor can drive the swing arm to swing back and forth so as to drive the second-stage telescopic plate and the third-stage telescopic plate to stretch out and retract.

The chain wheel and chain assembly comprises chain wheels 611 arranged on two side edges of a second-stage expansion plate in a diagonal mode and chains A612 wound on the chain wheels, one end of each chain A is connected with a first-stage rotating table plate, the other end of each chain A is connected with a third-stage expansion plate, a gripper 12 is installed at the front end of each third-stage expansion plate, test tube rack guide plates 13 are further arranged on two sides of the gripper, a driving motor drives the swing arms to swing towards the direction of a rotary tube storage rack and drives the second-stage expansion plates to move towards the direction of the rotary tube storage rack, through the cooperation of the chain wheels and the chains, the third-stage expansion plates can be driven to move towards the direction of the rotary tube storage rack so as to support a test tube rack 14 in the freezing storage rack, the second-stage expansion plates and the third-stage expansion plates can simultaneously slide and expand due to the arrangement of a multi-stage telescopic material taking mechanism, the test tube rack can be conveniently supported and transported, and can be further stretched inwards to take materials in the freezing storage rack after the test tube rack in the outer rotary tube storage rack is taken out and taken out, and the test tube rack can be grabbed in a double depth mode.

The utility model relates to an intelligent refrigerator for saving biological sample's beneficial effect is:

1. the utility model can realize the sorting operation of the test tubes in the refrigerator shell through the automatic conveying mechanism for the test tube rack to pass in and out, realize the full-function flow of the pretreatment of the sample entering and exiting, and realize the flexible application of the whole storage and the zero taking of the sample; the gripper interacts with the rotary drum storage rack in a lifting and rotating mode to grab any group of test tube racks on the freezing storage rack in the rotary drum storage racks on the left side and the right side, the gripper is matched with the multi-stage telescopic material taking mechanism to grab the test tube racks in double depths, occupied space is small, use is convenient, full-automatic low-temperature access operation of biological samples can be achieved, and working efficiency is effectively improved;

2. the rotary drum driving mechanism of the worm gear is also connected with a set of external manual rotary drum driving components, can be used for rotating the storage rack inside manually, and is used for manually rotating the storage rack under the condition of power failure.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.

Claims

1. An intelligent refrigerator for storing biological samples, comprising: the utility model provides a test tube rack, including heat preservation box casing, two sets of rotary drum storage frame, rotary drum actuating mechanism that are used for storing the test-tube rack that set up in the heat preservation box casing, be used for getting get the tongs transport mechanism of putting the test-tube rack in the rotary drum and set up the sample test tube access & exit on heat preservation box casing side, its characterized in that, be provided with the test-tube rack automatic handling mechanism that comes in and goes out with the butt joint of sample test tube access & exit in the heat preservation box casing, the test-tube rack automatic handling mechanism that comes in and goes out includes the test-tube rack in and go out the box, upper pretreatment region and lower floor's test tube selects the region including setting up test-tube rack drive module on the test-tube rack access box lateral wall, set up on test-tube rack drive module and horizontal motion's first test-tube bracket, defrosting mechanism, vision mechanism and first sealing door of shooing, lower floor's test-tube region includes two sets up two sets of X axle straight line drive module, Z axle straight line drive module Y axle clamp claw straight line drive module and second sealing door, all be provided with the second test-tube clamp on two sets up on the Y axle straight line drive module.

2. The intelligent refrigerator according to claim 1, wherein bottoms of the first and second test tube holders are hollow structures, and the first and second test tube holders are provided with a secondary positioning mechanism.

3. The intelligent refrigerator for storing biological samples according to claim 2, wherein the secondary positioning mechanism is a solenoid push rod diagonally arranged on the first test tube holder or the second test tube holder, and the solenoid push rod is used for compressing and positioning the test tube holders in the first test tube holder and the second test tube holder.

4. The intelligent refrigerator for storing biological samples according to claim 1, wherein the visual photographing mechanism is disposed below the first test tube holder, and the visual photographing mechanism employs a CCD camera for acquiring two-dimensional code information of each test tube on the first test tube holder.

5. The intelligent refrigerator for storing biological samples according to claim 1, wherein the gripper transporting mechanism comprises a lifting driving assembly and a transporting driving assembly, the lifting driving assembly comprises a lifting upright arranged in the incubator casing, a ball screw module arranged on the lifting upright, a guide slide rail arranged on the side edge of the lifting upright, and a fixing plate connected with a slide block on the slide rail, and the ball screw module is connected with the fixing plate and can drive the fixing plate to move up and down; the carrying driving assembly comprises a bottom plate, a rotary driving mechanism and a multi-stage telescopic material taking mechanism, the bottom plate is connected with the fixed plate, the rotary driving mechanism is arranged on the multi-stage telescopic material taking mechanism, the rotary driving mechanism is arranged below the multi-stage telescopic material taking mechanism and can drive the multi-stage telescopic material taking mechanism to rotate so as to enable the grippers to grab test tube racks in different directions, the rotary driving mechanism comprises a rotary table driving motor arranged on the bottom plate, and the output end of the rotary table driving motor is connected with a rotating shaft arranged below the multi-stage telescopic material taking mechanism through a belt.

6. The intelligent refrigerator for storing the biological samples according to claim 5, wherein the multi-stage telescopic material taking mechanism comprises a first stage rotating plate, a second stage telescopic plate, a third stage telescopic plate and a swing arm driving assembly, the second stage telescopic plate is in sliding connection with the first stage rotating plate through a first slide rail, the third stage telescopic plate is in sliding connection with the second stage rotating plate through a second slide rail, chain wheel chain assemblies are respectively arranged on two sides of the second stage telescopic plate, the swing arm driving assembly comprises a swing arm driving motor and a swing arm, the swing arm driving motor is arranged on the first stage rotating plate, one end of the swing arm is connected with the swing arm driving motor, the other end of the swing arm is arranged in a sliding chute below the second stage telescopic plate, and the swing arm driving motor can drive the second stage telescopic plate and the third stage telescopic plate to extend and retract.

7. The intelligent refrigerator for storing biological samples as claimed in claim 6, wherein the chain wheel and chain assembly comprises a chain wheel arranged on two side edges of the secondary expansion plate in a diagonal manner and a chain A wound on the chain wheel, one end of the chain A is connected with the primary turntable plate, and the other end of the chain A is connected with the tertiary expansion plate.

8. The intelligent refrigerator for storing the biological samples according to claim 1, wherein the rotating cylinder storage rack comprises a group of concentric inner rotating cylinder storage racks and outer rotating cylinder storage racks, the rotating cylinder driving mechanism is arranged above a top plate of the heat insulation box shell and comprises an inner rotating cylinder driving assembly for driving the inner rotating cylinder storage rack to rotate forwards or reversely and an outer rotating cylinder driving assembly for driving the outer rotating cylinder storage rack to rotate forwards or reversely, the inner rotating cylinder storage racks and the outer rotating cylinder storage racks have the same structure and comprise rotating cylinders, freezing racks wound in the rotating cylinders in a layered manner around the circumferential direction of the rotating cylinders and test tube racks arranged in the freezing racks, side plates on two sides of the freezing racks are fixedly connected with an upper rotating cylinder plate and a lower rotating cylinder plate, the freezing racks are sheet metal parts, and the gap between the upper layer of the freezing rack and the lower layer of the test tube racks adjacent to each other in the freezing racks is close to 8MM.

9. The intelligent refrigerator for storing biological samples as claimed in claim 8, wherein the plurality of freezing shelves distributed in the outer rotary storage rack form a group of spaces to form a material taking station, so that the gripper can grasp the test tube rack in the freezing shelf on the inner rotary storage rack.

10. The intelligent refrigerator for storing biological samples as claimed in claim 8, wherein the inner rotary drum driving assembly comprises a first worm driving motor arranged above the top plate of the thermal insulation box shell and a first worm connected with the first worm driving motor, and the first worm is meshed with a first gear at the top of a rotating shaft of the inner rotary drum storage rack; the outer rotating cylinder driving assembly comprises a second worm driving motor arranged above a top plate of a shell of the heat preservation box and a second worm connected with the second worm driving motor, and the second worm is meshed with a second gear on the top of a rotating shaft of the outer rotating cylinder storage rack.