CN219340273U

CN219340273U - Freezing box storing and taking device

Info

Publication number: CN219340273U
Application number: CN202223547192.7U
Authority: CN
Inventors: 胡佳霖; 黄轶; 张铭
Original assignee: Base Biotechnology Chengdu Co ltd
Current assignee: Base Biotechnology Chengdu Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-07-14
Anticipated expiration: 2032-12-29

Abstract

The application discloses a frozen box storing and taking device, which comprises a lifting mechanism, a pushing-in pushing-out mechanism and a driving mechanism, wherein the driving mechanism is respectively connected with the lifting mechanism and the pushing-in pushing-out mechanism; the push-out mechanism is arranged below the lifting mechanism. When the lifting mechanism is connected with the target storage rack, the lifting mechanism can drive the target storage rack to lift or descend along the vertical direction; when the lifting mechanism lifts the position of the target storage area of the target access rack to the height position where the pushing-in and pushing-out mechanism is docked, the pushing-in and pushing-out mechanism can push in or push out the frozen box to or from the target storage area. Therefore, when a certain freezing box positioned in the freezing refrigerator is taken out, the freezing box positioned on the upper side of the freezing box does not need to be taken out as in the prior art, and then the freezing box can be taken out. The application provides a frozen box access arrangement has improved the efficiency of taking out frozen box, and then makes the time consuming of frozen box access less, and efficiency is higher.

Description

Freezing box storing and taking device

Technical Field

The application relates to the technical field of biological sample preservation, in particular to a freezing storage box access device.

Background

At present, when biological samples such as blood, stem cells, immune cells and the like are stored, the biological samples are usually placed in a freezing tube, the freezing tube is placed in a freezing box, and the freezing box is stored in a refrigerator inside a low-temperature storage device for the biological samples. Since the interior of the refrigerator can generate a low-temperature environment, the biological sample can be kept active for a long time.

In the prior art, the freezing boxes are stored in the refrigerator in a mode of stacking from bottom to top in sequence, so that if the freezing box at the bottommost layer is to be taken out from a low-temperature environment, the freezing box at the upper side of the freezing box needs to be taken out or moved away in sequence through a grabbing device, and the freezing box can be finally taken out.

For example, the patent with publication number CN209027170U adopts a similar way of storing and taking out the freezing storage box, and the low-temperature storage device disclosed in the patent comprises a refrigerator mechanism, one end of the refrigerator mechanism is provided with a transfer box transmission mechanism, a plurality of storage square tubes are arranged in the refrigerator mechanism, and a first grabbing device is arranged on the upper side of the refrigerator mechanism. The process of storing and taking out the freezing box by the low-temperature storage device is as follows: the method comprises the steps that firstly, a frozen storage box of a transfer tank is taken out through a first grabbing device and moved to the upper side of a storage square tube, then the frozen storage box is placed inside the storage square tube through the first grabbing device, and the frozen storage box is stored in the storage square tube in a mode of being stacked from bottom to top in sequence.

Therefore, the first grabbing device needs to grab the frozen box for multiple times in the process of taking out the frozen box in the prior art, so that the frozen box positioned on the non-top layer can be taken out, the time consumption is long, and the access efficiency of the frozen box can be reduced.

Disclosure of Invention

To above-mentioned not enough among the prior art, this application provides a cryopreservation box access arrangement, can solve among the prior art take out the cryopreservation box operation from the cryopreservation refrigerator and have the problem that consuming time is longer, just efficiency is lower.

The application provides a frozen box storing and taking device which comprises a lifting mechanism, a pushing-in pushing-out mechanism and a driving mechanism, wherein the driving mechanism is respectively connected with the lifting mechanism and the pushing-in pushing-out mechanism; the pushing-in and pushing-out mechanism is arranged below the lifting mechanism;

when the lifting mechanism is connected with the target access frame, the lifting mechanism is driven by the driving mechanism to drive the target access frame to move in the vertical direction; the target storage rack is provided with at least two sample supporting pieces with different heights along the vertical direction, and each sample supporting piece is provided with a sample placing area for placing the freezing storage box;

When the target storage area is located at a height position where the pushing-in and pushing-out mechanism is in butt joint, the pushing-in and pushing-out mechanism moves relative to the target access rack along a first horizontal direction perpendicular to the vertical direction under the driving of the driving mechanism so as to push in or push out the freezing storage box to or from the target storage area; the target storage area is one of all of the sample placement areas of the target access rack.

In an optional embodiment of the present application, the pushing-out mechanism includes a pushing component and a tray, where the tray includes a sample temporary storage area, where the pushing component is connected to the driving mechanism, and the sample temporary storage area places a cryopreserved box that needs to be stored in the target storage area, or places a cryopreserved box that is taken out from the target storage area.

In an alternative embodiment of the present application, the pushing assembly includes a pushing member, a first sliding rail, a first sliding block, and a second sliding block, where the pushing member and the pushing member are respectively located at two opposite sides of the sample temporary storage area along the first horizontal direction; the pushing-out piece and the pushing-in piece are respectively connected with the driving mechanism; the first sliding rail is arranged along the first horizontal direction, the first sliding block and the second sliding block are respectively and slidably connected to two ends of the first sliding rail, the first sliding block is connected with the pushing-in piece, and the second sliding block is connected with the pushing-out piece; the pushing-out piece and the pushing-in piece can move along the first horizontal direction respectively under the driving of the driving mechanism.

In an alternative embodiment of the present application, the driving mechanism includes a first reciprocating rectilinear motion cylinder and a second reciprocating rectilinear motion cylinder, each disposed along the first horizontal direction; the pushing assembly comprises a pushing-out piece and a pushing-in piece; the piston rod of the first reciprocating rectilinear motion cylinder is connected with the pushing-in piece, and the piston rod of the second reciprocating rectilinear motion cylinder is connected with the pushing-out piece.

In an alternative embodiment of the present application, the lifting mechanism includes a first Z-axis motion assembly, a clamping assembly, a Y-axis motion assembly, and an X-axis motion assembly; the first Z-axis motion assembly, the Y-axis motion assembly and the X-axis motion assembly are respectively connected with the driving mechanism; the first Z-axis movement assembly, the pushing-in and pushing-out mechanism and the X-axis movement assembly are all connected with the Y-axis movement assembly;

the first Z-axis movement assembly drives the clamping assembly to move along the vertical direction under the driving of the driving mechanism; the Y-axis movement assembly drives the first Z-axis movement assembly, the clamping assembly and the pushing-pushing mechanism to move along a second horizontal direction under the driving of the driving mechanism; the X-axis motion assembly drives the Y-axis motion assembly, the lifting mechanism and the pushing-pushing mechanism to move along a third horizontal direction under the driving of the driving mechanism; wherein the second horizontal direction and the third horizontal direction are both perpendicular to the vertical direction, and the second horizontal direction is perpendicular to the third horizontal direction.

In an alternative embodiment of the present application, the lifting mechanism includes a first Z-axis motion assembly, a clamping assembly, and a first lifting frame, and the drive mechanism includes a first motor; the first Z-axis movement assembly comprises a first screw rod, a first nut, a third sliding rail and a third sliding block; the first screw rod and the third sliding rail are both arranged on the first lifting frame along the vertical direction; one end of the first screw rod is in threaded connection with the first nut, and the other end of the first screw rod is connected with an output shaft of the first motor; the third sliding rail is in sliding connection with the third sliding block, and the third sliding block is connected with the first nut and the clamping assembly.

In an optional embodiment of the present application, the lifting mechanism includes a first clamping portion, and the target access rack and the thermal insulation cover of the freezer include a second clamping portion and a third clamping portion, respectively; the first clamping part is detachably connected with the second clamping part and the third clamping part.

In an alternative embodiment of the present application, the lifting mechanism includes a clamp assembly, a first Z-axis motion assembly, and a second Z-axis motion assembly; the first Z-axis motion assembly and the second Z-axis motion assembly are arranged along the vertical direction and are respectively connected with the driving mechanism; the first end of the first Z-axis movement assembly along the vertical direction is connected with the clamping assembly, and the second end of the first Z-axis movement assembly along the vertical direction is connected with the second Z-axis movement assembly;

The first Z-axis movement assembly drives the clamping assembly to move along the vertical direction under the driving of the driving mechanism; the second Z-axis movement assembly is driven by the driving mechanism to drive the first Z-axis movement assembly and the clamping assembly to move along the vertical direction.

In an alternative embodiment of the present application, the lifting mechanism further includes a thermal insulation frame layer covering the periphery of the clamping assembly, and a thermal insulation space for accommodating the target access rack is provided inside the thermal insulation frame layer.

In an optional embodiment of the present application, the storage box access device further includes a cold air supply tank and an air supply pipe, the air supply pipe is communicated with the inside of the cold air supply tank and the insulation space of the insulation frame layer, and a liquid generating cold air is placed in the inside of the cold air supply tank.

According to the frozen storage box storing and taking device, through the design of the lifting mechanism, the pushing-out mechanism and the position connecting structure between the driving mechanism, the frozen storage box taking efficiency is improved, namely, the frozen storage box storing and taking device is connected with the target storing and taking frame through the lifting mechanism, and the target storing and taking frame can be lifted or lowered along the vertical direction; when the lifting mechanism lifts the position of the target storage area of the target access rack to a height position where the pushing-in pushing-out mechanism is docked, the pushing-in pushing-out mechanism moves relative to the target access rack in a first horizontal direction perpendicular to the vertical direction to push in or push out the freezing storage box to or from the target storage area. Therefore, when a certain freezing box positioned in the freezing refrigerator is taken out, the freezing box positioned on the upper side of the freezing box does not need to be taken out as in the prior art, and then the freezing box can be taken out. Compared with the prior art, the frozen box storing and taking device provided by the application improves the efficiency of taking out the frozen box, so that the time consumption of storing and taking the frozen box is less, and the efficiency is higher.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the internal structure of a biological sample cryogenic storage device that does not include a thermal insulation frame layer;

FIG. 2 is a schematic diagram of the upper partial structure of a biological sample cryogenic storage device;

FIG. 3 is a schematic view of the internal structure of a biological sample cryogenic storage device including a thermal insulation frame layer;

fig. 4 is a schematic view of a first view structure of a connection state between a lifting mechanism and a target access rack according to an embodiment of the present disclosure;

fig. 5 is a schematic view of a second view structure of a connection state between a lifting mechanism and a target access rack according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of a third view angle structure of the lifting mechanism and the target access rack in a connection state according to the embodiment of the present application;

fig. 7 is a schematic view of a fourth view structure of a connection state between a lifting mechanism and a target access rack according to an embodiment of the present disclosure;

Fig. 8 is a schematic structural view of the freezing shelf.

Reference numerals illustrate:

10. a freezing refrigerator; 101. a thermal insulation cover; 101a, a third clamping part; 103. a low temperature storage area;

20. a freezing storage rack; 20A, a target access rack; 201. a sample support; 202. a second clamping portion;

30. a lifting mechanism; 301. a first Z-axis motion assembly; 301a, a first screw rod; 301b, a first nut; 301c, a third slide rail; 301d, a third slider; 301e, a first lifting frame; 302. a clamping assembly; 302a, a first clamping portion; 303. a Y-axis motion assembly; 304. an X-axis motion assembly; 305. a second Z-axis motion assembly; 305e, a second lifting frame; 306. a heat-insulating frame layer; 307. a guide frame; 308. a guide wheel;

40. pushing in the pushing-out mechanism; 401. a pushing assembly; 401a, a pusher; 401b, ejector; 401c, a first slide rail; 401d, a first slider; 401e, a second slider; 402. a tray; 403. pushing the mounting frame;

501. a first reciprocating rectilinear motion cylinder; 502. a second reciprocating rectilinear motion cylinder; 503. a first motor; 504. a second motor;

60. an external docking mechanism;

80. and a main frame.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.

Referring to fig. 1-8, an embodiment of the present application provides a cryopreservation cassette access apparatus comprising a lifting mechanism 30, a push-out mechanism 40, and a drive mechanism (not shown), wherein,

the driving mechanism is respectively connected with the lifting mechanism 30 and the pushing-in and pushing-out mechanism 40; the push-out mechanism 40 is disposed below the lifting mechanism 30.

When the lifting mechanism 30 is connected to the target access rack 20A, the lifting mechanism 30 drives the target access rack 20A to move in the vertical direction under the driving of the driving mechanism. The target storage rack 20A is provided with at least two sample supports 201 with different heights along the vertical direction, and each sample support 201 is provided with a sample placement area (not shown) for placing the freezing storage box.

When the target storage area is located at a height position where it is docked with the push-out mechanism 40, the push-out mechanism 40 is moved in a first horizontal direction perpendicular to the vertical direction with respect to the target access rack 20A by the drive mechanism to push the cryopreserved cassette into or out of the target storage area. Wherein the target storage area is one of all sample placement areas of the target access rack 20A.

In this embodiment, referring to fig. 1 and 3, the access device for the freezing storage box is a part of the biological sample low-temperature storage device. The inside of the biological sample low-temperature storage device comprises a plurality of freezing refrigerators 10, and the inside of the freezing refrigerators 10 is provided with a low-temperature storage area 103 for placing a plurality of freezing frames 20. The refrigerator 10 is used to create a low-temperature environment in the low-temperature storage area 103 to store the cryopreservation cassette placed therein at a low temperature. Wherein, the low temperature environment generally refers to an environment with a temperature of-80 ℃ or below-80 ℃, and the preservation of the biological sample in the environment can reduce the biochemical reaction of the biological sample and maintain the stability of various components in the biological sample. In addition, the number of the freezing refrigerators 10 is not limited in this embodiment, and can be set reasonably according to practical application requirements.

In this embodiment, one or more freezing frames 20 may be placed in the freezing refrigerator 10, at least one freezing frame 20 may include a plurality of sample placement areas sequentially set along the vertical direction, at least one freezing box may be placed in each sample placement area, and in this embodiment, the number of freezing frames 20 and the number of freezing boxes that may be placed on each freezing frame 20 are not limited, and may be set reasonably according to practical application requirements.

Alternatively, in order to increase the number of low-temperature storages of the freezing storages, it may be preferable that a plurality of freezing storages 20 are placed in the low-temperature storage area of each freezing refrigerator 10, and a plurality of sample placing areas are provided on each freezing storages 20, i.e., a plurality of sample supporting members having different heights are provided on each freezing storages. Wherein the target access rack 20A is one of the whole freezing racks 20, and the target storage area is one of the whole sample placement areas of the target access rack 20A.

In this embodiment, the refrigerator 10 has an access opening (not shown) at the upper portion of the low-temperature storage area 103, and the lifting mechanism 30 is driven by the driving mechanism to drive the target access rack 20A to move in the vertical direction, so that at least part of the target access rack 20A passes through the access opening to enter or leave the low-temperature storage area 103.

In this embodiment, the driving mechanism is configured to provide driving force for movement of other mechanisms, and the specific structural composition, the size and the setting position of the driving force provided, and the connection manner, shape and size of the driving mechanism and other mechanisms are not limited, and may be set reasonably according to practical application requirements. For example, the driving mechanism may include a plurality of driving members, all or part of the driving members may be motors, and the driving forces provided by different motors may be the same or different, and different motors may be disposed at different positions of the storage and retrieval device of the freezer and respectively connected to and providing driving forces for different other mechanisms.

Further, in view of the price of the low temperature motor suitable for use in the low temperature environment being more expensive than the normal temperature motor unsuitable for use in the low temperature environment, when the driving mechanism includes a plurality of motors, it may be preferable to use the normal temperature motor and set the position of the normal temperature motor outside the refrigerator 10.

In this embodiment, the lifting mechanism 30 is at least used to adjust the height position of the target access rack 20A in the vertical direction, so that the target storage area of the target access rack 20A passes through the access opening of the refrigerator 10 to enter or leave the low-temperature storage area 103. Specifically, the freezing shelf 20 is generally placed in the low temperature storage region 103 inside the freezing refrigerator 10, and when a certain freezing box needs to be taken out of the low temperature storage region 103 of the freezing refrigerator 10 or put into the low temperature storage region 103 of the freezing refrigerator 10, referring to fig. 1 and 3, the vertical height of the target access shelf 20A in which the freezing box is placed can be lifted by the lifting mechanism 30, and the target storage region can be lifted to the upper side of the freezing refrigerator 10 through the access opening of the freezing refrigerator 10 and positioned at a height position to interface with the push-out mechanism 40.

In addition, the lifting mechanism 30 may be detachably connected to all the freezing frames 20, or may be fixedly connected to each other, which is not limited herein. And the structural composition, the installation position, the shape and the size of the lifting mechanism 30 are not limited, and can be reasonably set according to the actual application requirements.

In the present embodiment, the push-out mechanism 40 is located below the lifting mechanism 30 and on the upper side of the refrigerator 10. After the lifting mechanism 30 lifts the position of the target storage area of the target access rack 20A to the upper side of the freezer 10, the push-in and push-out mechanism 40 can push in or push out the freezer to or from the target storage area.

The specific structural composition, shape and size of the push-in and push-out mechanism 40 are not limited, and can be reasonably set according to practical application requirements. The push-out mechanism 40 may be connected to the lifting mechanism 30 or may not be connected to the lifting mechanism 30. The push-out mechanism 40 being located below the lifting mechanism 30 means that the upper end surface of the lifting mechanism 30 is higher than the push-out mechanism 40 in the vertical direction, that is, the push-out mechanism 40 may be completely located below the lower end surface of the lifting mechanism 30 in the vertical direction, and the vertical height positions of the two mechanisms do not coincide; the push-out mechanism 40 may be partially located below the lower end surface of the lifting mechanism 30, or the push-out mechanism 40 may be entirely located between the upper end surface and the lower end surface of the lifting mechanism 30, and the vertical height positions of the push-out mechanism 40 and the lifting mechanism 30 may be overlapped.

In this embodiment, the height position where the target storage area is in butt joint with the push-in and push-out mechanism 40 means that the push-in and push-out mechanism 40 can push the frozen box into or out of the target storage area, and the specific height is not limited, and in practical application, the height position where the target storage area is in butt joint with the push-in and push-out mechanism 40 may be different for different types of push-in and push-out mechanisms 40 according to the structural composition, shape, size, etc. of the push-in and push-out mechanism 40.

In the present embodiment, the first horizontal direction is a direction perpendicular to the vertical direction, and the specific direction is not limited, and may be determined according to the arrangement manner of the push-out mechanism 40 with respect to the target storage area. For example, referring to fig. 4-7, the vertical direction may be the z direction or the opposite direction in the coordinate system in the figure, and the first horizontal direction may be the x direction or the opposite direction in the coordinate system in the figure.

In this embodiment, referring to fig. 1 and 3, the biological sample low-temperature storage device may further include a main frame 80 and a housing (not shown), wherein the housing covers the outer side of the main frame 80, and most of the components in the biological sample low-temperature storage device are located inside the housing. The housing is provided with an external interface (not shown), and an external docking mechanism 60 is provided near the external interface. The external docking mechanism 60 is used for receiving the cryopreservation cassette from outside the biological sample cryogenic storage device from the external docking and transferring the cryopreservation cassette to inside the biological sample cryogenic storage device; or transferring the cryopreservation cassette positioned inside the biological sample cryogenic storage device to an external counter interface for taking from a user outside the biological sample cryogenic storage device.

Alternatively, in order to temporarily store the cryopreservation cassette, a sample buffer for temporarily storing the cryopreservation cassette may be further provided on the push-out mechanism 40. Specifically, referring to fig. 4 to 7, the push-out push mechanism 40 includes a push assembly 401 and a tray 402, the push assembly 401 is connected to the drive mechanism, and the tray 402 includes a sample buffer (not shown) thereon for placing a cryopreserved cassette to be stored in the target storage area or for placing a cryopreserved cassette taken out of the target storage area.

When the target storage area of the target access rack 20A is located at the height position where the pushing-in pushing-out mechanism 40 is docked, the pushing component 401 can move along the first horizontal direction perpendicular to the vertical direction relative to the target access rack 20A under the driving of the driving mechanism, so as to push the cryopreserved box located in the sample temporary storage area into the target storage area or push the cryopreserved box located in the target storage area out to the sample temporary storage area.

Further, in order to improve space utilization and simplify the structure of the push-in and push-out mechanism 40, push-out pieces 401b and push-in pieces 401a may be provided on both sides of the sample buffer, respectively.

Specifically, referring to fig. 4 to 7, the pushing assembly 401 includes a pushing member 401b and a pushing member 401a, and the pushing member 401b and the pushing member 401a are respectively located at opposite sides of the sample buffer in the first horizontal direction. The pushing-out member 401b and the pushing-in member 401a are respectively connected to a driving mechanism; the pushing-out member 401b and the pushing-in member 401a are movable in the first horizontal direction, respectively, by the driving mechanism.

The pushing-in part 401a is used for pushing the frozen storage box in the sample temporary storage area into the target storage area, and the pushing-out part 401b is used for pushing out the frozen storage box in the target storage area into the sample temporary storage area. The connection mode of the driving mechanism and the pushing-in piece 401a and pushing-out piece 401b is not limited, and can be reasonably selected according to practical application requirements. For example, the driving mechanism may drive the push-in member 401a and the push-out member 401b by manual driving or electric driving, respectively. For another example, when the driving mechanism adopts an electric driving mode, the driving mechanism may include a motor, and the pushing member 401b and the pushing member 401a are driven to move respectively through different control and transmission modes; the driving mechanism may further include two motors respectively connected to the pushing member 401b and the pushing member 401a, one motor for driving the pushing member 401b to move and the other motor for driving the pushing member 401a to move.

In addition, a avoidance area for accommodating the target access rack 20A is further provided between the pushing-in part 401a and the pushing-out part 401b, and the lifting mechanism 30 can drive the target access rack 20A to move in the vertical direction in the avoidance area so as to adjust the position of the target storage area to a height position for docking with the pushing-in and pushing-out mechanism 40.

When the target storage area is located at the height position where the pushing-in pushing-out mechanism 40 is docked, the pushing-in member 401a is moved forward in the first horizontal direction relative to the freezing frame 20 under the drive of the driving mechanism to push the freezing box located in the sample temporary storage area into the target storage area; alternatively, the ejector 401b is moved rearward in the first horizontal direction with respect to the cryopreservation frame 20 by the driving mechanism to eject the cryopreservation cassette located in the target storage area to the sample buffer.

Further, in order to improve the smoothness of the movement of the pushing member 401a and the pushing member 401b in the first horizontal direction, guiding may be performed by a slider and slide rail structure. Specifically, referring to fig. 7, the pushing assembly 401 further includes a first sliding rail 401c, a first sliding block 401d and a second sliding block 401e, the first sliding rail 401c is disposed along a first horizontal direction, the first sliding block 401d and the second sliding block 401e are respectively movably connected to two ends of the first sliding rail 401c, the first sliding block 401d is connected to the pushing member 401a, and the second sliding block 401e is connected to the pushing member 401 b.

The driving mechanism can drive the pushing-in part 401a and the first sliding block 401d to move along the first horizontal direction relative to the first sliding rail 401c, so that the pushing-in part 401a can push the freezing box positioned in the sample temporary storage area into the target storage area; and the driving mechanism can drive the pushing-out piece 401b and the second sliding block 401e to move along the first horizontal direction relative to the first sliding rail 401c, so that the pushing-out piece 401b can push out the freezing box positioned in the target storage area to the sample temporary storage area.

Further, in order to improve space utilization and simplify the structure, the pushing-in member 401a and the pushing-out member 401b may be driven by a reciprocating rectilinear motion cylinder.

Specifically, referring to fig. 7, the driving mechanism includes a first reciprocating rectilinear motion cylinder 501 and a second reciprocating rectilinear motion cylinder 502 each disposed along a first horizontal direction; a piston rod of the first reciprocating rectilinear motion cylinder 501 is connected to the pushing-in member 401a, and a piston rod of the second reciprocating rectilinear motion cylinder 502 is connected to the pushing-out member 401 b.

Wherein the cylinder barrel of the first reciprocating rectilinear motion cylinder 501 and the cylinder barrel of the second reciprocating rectilinear motion cylinder 502 are both connected with the lifting mechanism 30, and the position of the cylinder barrel of the first reciprocating rectilinear motion cylinder 501 and the cylinder barrel of the second reciprocating rectilinear motion cylinder 502 relative to the lifting mechanism 30 in the first horizontal direction are not adjustable, i.e. neither the cylinder barrel of the first reciprocating rectilinear motion cylinder 501 nor the cylinder barrel of the second reciprocating rectilinear motion cylinder 502 can move in the first horizontal direction relative to the lifting mechanism 30, but both the piston rod of the first reciprocating rectilinear motion cylinder 501 and the piston rod of the second reciprocating rectilinear motion cylinder 502 can move in the first horizontal direction relative to the lifting mechanism 30.

Further, in order to facilitate the installation of the components and to improve the space utilization, a push mount 403 for assembling the components may be provided. In particular, referring to fig. 4-7, the push assembly 401 further includes a push mount 403, and both the push member 401b and the push member 401a are slidably coupled to the push mount 403.

In addition, it may be further preferable to install the push-up mount 403 at the lower portion of the lifting mechanism 30, and when the driving mechanism includes a first driving assembly connected to the push-in member 401a and a second driving assembly connected to the push-out member 401b, both the first driving assembly and the second driving assembly may be also installed on the push-up mount 403.

For example, when the first driving unit is the first reciprocating rectilinear motion cylinder 501 and the second driving unit is the second reciprocating rectilinear motion cylinder 502, the cylinder barrel of the first reciprocating rectilinear motion cylinder 501 and the cylinder barrel of the second reciprocating rectilinear motion cylinder 502 may be fixedly installed on the push mounting bracket 403.

Alternatively, when a plurality of freezing refrigerators 10 are included in the biological sample low-temperature storage apparatus and/or a plurality of freezing shelves 20 are included in each freezing refrigerator 10, in order to simplify the structural complexity of the lifting mechanism 30, it may be preferable that the lifting mechanism 30 be detachably connected with all the freezing shelves 20.

Specifically, the lifting mechanism 30 includes a first Z-axis motion assembly 301 and a clamp assembly 302; the first Z-axis moving assembly 301 is connected to a driving mechanism, and the first Z-axis moving assembly 301 is connected to a clamping assembly 302. The first Z-axis moving assembly 301 drives the clamping assembly 302 to move in the vertical direction under the driving of the driving mechanism, so that the clamping assembly 302 is connected to or disconnected from the target access rack 20A when the clamping assembly 302 is located at the height position connected to the target access rack 20A.

Further, in order to achieve the detachable connection of the lifting mechanism 30 to all the freezing shelves 20, a mechanism for adjusting the horizontal position of the lifting mechanism 30 may be provided in consideration of the different positions of the freezing shelves 20 in the low temperature storage area 103 of the freezing refrigerator 10.

Specifically, referring to FIG. 2, the lift mechanism 30 further includes a Y-axis motion assembly 303 coupled to the drive mechanism; the first Z-axis moving assembly 301 and the push-out mechanism 40 are both connected to the Y-axis moving assembly 303. The Y-axis moving assembly 303 drives the first Z-axis moving assembly 301, the clamping assembly 302, and the push-out mechanism 40 to move in the second horizontal direction with respect to the refrigerator 10 under the driving of the driving mechanism. So that when the horizontal position of the lifting mechanism 30 is located at the connection position with the target access rack 20A, the lifting mechanism 30 can form a connection with the target access rack 20A and further drive the target access rack 20A to move in the vertical direction.

The specific direction of the second horizontal direction is not limited, and may be the same as or different from the other horizontal directions in the present embodiment, and may be determined according to the setting position of the lifting mechanism 30 relative to the refrigerator 10 and the structural composition of the lifting mechanism 30. For example, referring to fig. 2, the vertical direction may be the z direction or the opposite direction in the coordinate system in the figure, and the second horizontal direction may be the y direction or the opposite direction in the coordinate system in the figure.

The first Z-axis moving unit 301 and the push-out mechanism 40 are not limited to the manner of connection with the Y-axis moving unit 303, and may be directly or indirectly connected, and the present embodiment is not limited thereto. For example, the first Z-axis moving assembly 301 and the push-out mechanism 40 may be respectively connected to the Y-axis moving assembly 303; alternatively, the first Z-axis moving assembly 301 and the push-out mechanism 40 may be mounted on a single mounting bracket, which in turn is mounted on the Y-axis moving assembly 303.

Further, in order to expand the horizontal movement range of the lifting mechanism 30 relative to the refrigerator 10, the lifting mechanism 30 may further include an X-axis movement assembly 304 connected to the driving mechanism, and the X-axis movement assembly 304 is connected to the first Z-axis movement assembly 301, the push-in and push-out mechanism 40, and the Y-axis movement assembly 303. The X-axis moving assembly 304 drives the Y-axis moving assembly 303, the lifting mechanism 30, and the push-out mechanism 40 to move in a third horizontal direction with respect to the refrigerator 10 under the driving of the driving mechanism.

The third horizontal direction is perpendicular to the vertical direction and the second horizontal direction, and the specific direction of the third horizontal direction is not limited, and may be determined according to the setting position of the lifting mechanism 30 relative to the refrigerator 10 and the structural composition of the lifting mechanism 30 in practical application. For example, referring to fig. 1 and 2, the vertical direction may be a z direction or an opposite direction in the coordinate system in the drawing, the second horizontal direction may be a y direction or an opposite direction in the coordinate system in the drawing, the third horizontal direction may be an x direction or an opposite direction in the coordinate system in the drawing, and the third horizontal direction has the same direction as the first horizontal direction.

The connection between the X-axis moving unit 304 and the first Z-axis moving unit 301, the push-in and push-out mechanism 40, and the Y-axis moving unit 303 is not limited, and may be a direct connection or an indirect connection. For example, the first Z-axis moving assembly 301, the push-out mechanism 40, and the Y-axis moving assembly 303 may be respectively connected to the X-axis moving assembly 304; alternatively, the first Z-axis moving unit 301 and the push-out mechanism 40 may be connected to the Y-axis moving unit 303, and the Y-axis moving unit 303 may be connected to the X-axis moving unit 304.

Further, referring to fig. 4-7, to enable the removable connection of the lifting mechanism 30 to all of the freezer racks 20, the clamp assembly 302 may include a first clamp portion 302a; referring to fig. 8, all of the shelves 20 include a second clamping portion 202. When the first clamping portion 302a is located at the height position connected to the second clamping portion 202, the X-axis moving assembly 304 drives the first clamping portion 302a to move under the driving of the driving mechanism, so that the first clamping portion 302a is connected to or disconnected from the second clamping portion 202.

The shape, size and installation position of the first clamping portion 302a and the second clamping portion 202 are not limited, but the shape, size and installation position of the two need to be adapted, and the Y-axis moving assembly 303 and/or the X-axis moving assembly 304 drive the first clamping portion 302a to move relative to the second clamping portion 202, so that the first clamping portion 302a and the second clamping portion 202 can be connected or disconnected.

Further, it may be preferable that the first clamping portion 302a is a groove structure, the second clamping portion 202 is a protrusion structure, and the groove structure is adapted to the shape and size of the protrusion structure, so that when the protrusion structure is embedded in the groove structure, the first clamping portion 302a and the second clamping portion 202 may form a connection, that is, the lifting mechanism 30 and the target access rack 20A form a connection; when the protruding structure is removed from the recessed structure, the first clamping portion 302a is disconnected from the second clamping portion 202, i.e. the lifting mechanism 30 is disconnected from the freezing frame 20.

Further, in order to make the cold insulation effect in the low temperature storage area 103 of the refrigerator 10 better, the refrigerator 10 further includes a heat insulation cover 101 for opening or closing the access opening.

Further, in order to simplify the overall structure, it may be preferable that the lifting mechanism 30 also be used to move the heat preservation cover 101 so that the access opening of the refrigerator 10 is opened or closed. Specifically, referring to fig. 1 and 6, the insulating cover 101 is provided with a third clamping portion 101a, wherein the first clamping portion 302a is adapted to the shape, size and installation position of the third clamping portion 101 a. When the first clamping portion 302a is located at the height position connected to the third clamping portion 101a, the Y-axis moving component 303 and/or the X-axis moving component 304 may drive the first clamping portion 302a to move under the driving of the driving mechanism, so that the first clamping portion 302a is connected to or disconnected from the third clamping portion 101 a. After the first clamping portion 302a and the third clamping portion 101a are connected, the lifting mechanism 30 can further drive the thermal insulation cover 101 to move to open or close the access opening.

Further, it may be preferable that the first clamping portion 302a is a groove structure, the third clamping portion 101a is a protrusion structure, and the groove structure is adapted to the shape and the size of the protrusion structure, so that when the protrusion structure is embedded in the groove structure, the first clamping portion 302a and the third clamping portion 101a may form a connection, that is, the lifting mechanism 30 and the heat insulation cover 101 form a connection; when the protruding structure is removed from the groove structure, the first clamping portion 302a is disconnected from the third clamping portion 101a, i.e. the lifting mechanism 30 is disconnected from the heat-insulating cover 101.

Further, in order to improve the space utilization, the lifting mechanism 30 may be provided in a structure that is telescopic in the vertical direction. Specifically, referring to fig. 4-6, the lifting mechanism 30 further includes a second Z-axis moving assembly 305 connected to the driving mechanism, the first Z-axis moving assembly 301 and the second Z-axis moving assembly 305 are all disposed along a vertical direction, each including a first end and a second end sequentially disposed along the vertical direction, the first end of the second Z-axis moving assembly 305 is connected to the second end of the first Z-axis moving assembly 301, and the first end of the first Z-axis moving assembly 301 is connected to the clamping assembly 302. The second Z-axis moving assembly 305 is driven by the driving mechanism to drive the first Z-axis moving assembly 301 and the clamping assembly 302 to move in the vertical direction.

The second Z-axis moving assembly 305 and the first Z-axis moving assembly 301 may have the same structure or may be different from each other, which is not limited herein. And may include one or more other Z-axis motion assemblies in addition to the first Z-axis motion assembly 301 and the second Z-axis motion assembly 305. In addition, the specific structural composition of the first Z-axis moving assembly 301 and the second Z-axis moving assembly 305, and the driving manner of the driving mechanism to the first Z-axis moving assembly 301 and the second Z-axis moving assembly 305 are not limited.

For example, the driving mechanism may include two reciprocating rectilinear motion cylinders disposed in a vertical direction, a piston rod of one of the reciprocating rectilinear motion cylinders is connected to the first Z-axis motion assembly 301, and a piston rod of the other reciprocating rectilinear motion cylinder is connected to the second Z-axis motion assembly 305, and the first Z-axis motion assembly 301 and the second Z-axis motion assembly 305 are connected. The piston rod of the reciprocating linear motion cylinder moves vertically relative to the cylinder barrel, so that the first Z-axis motion assembly 301 and the second Z-axis motion assembly 305 can be driven to move vertically. For another example, the driving mechanism may include a motor and a transmission assembly, wherein the transmission assembly is connected to the first Z-axis moving assembly 301 and the second Z-axis moving assembly 305, and the transmission assembly may convert a rotational motion of the motor into a linear motion along a vertical direction, so as to drive the first Z-axis moving assembly 301 and the second Z-axis moving assembly 305 to move along the vertical direction.

In addition, it should be noted that the second Z-axis moving assembly 305 and the first Z-axis moving assembly 301 are connected to the Y-axis moving assembly 303 and/or the X-axis moving assembly 304 in the same manner, that is, the second Z-axis moving assembly 305 and the first Z-axis moving assembly 301 may be connected to the Y-axis moving assembly 303 and/or the X-axis moving assembly 304.

Further, for ease of manufacturing and assembly, it may be preferable that the second Z-axis motion assembly 305 and the first Z-axis motion assembly 301 be identical in structure.

Further, to facilitate the mounting of the relevant components, the lifting mechanism 30 may further include a lifting mounting frame (not shown) on which the push-out mechanism 40, the first Z-axis movement assembly 301 and the clamp assembly 302 are mounted. Where the lift mechanism 30 also includes a second Z-axis motion assembly 305, referring to fig. 6, the lift mounting frame may include two subframes, a first lift frame 301e and a second lift frame 305 e.

Further, referring to fig. 6, the drive mechanism includes a first motor 503; the first Z-axis moving assembly 301 includes a first screw 301a, a first nut 301b, a third slide 301c, and a third slider 301d; the first screw 301a and the third slide rail 301c are both installed on the first lifting frame 301e in the vertical direction; one end of a first screw rod 301a is in threaded connection with a first nut 301b, and the other end of the first screw rod 301a is connected with an output shaft of a first motor 503; the third slide rail 301c is slidably connected to the third slider 301d, and the third slider 301d is connected to the first nut 301b and the clamp assembly 302.

When the output shaft of the first motor 503 rotates, the first screw 301a is driven to rotate relative to the first nut 301b, so that the first nut 301b and the third slider 301d move in the vertical direction together relative to the first screw 301a and the third slide rail 301 c. By arranging the screw nut assembly and the sliding rail sliding block assembly, the first Z-axis movement assembly 301 can stably drive the clamping assembly 302 to move along the vertical direction.

Further, when the second Z-axis moving assembly 305 is identical in structure to the first Z-axis moving assembly 301, referring to fig. 6, the driving mechanism further includes a second motor 504. The second Z-axis motion assembly 305 includes a second screw (not shown), a second nut (not shown), a fourth slide (not shown), and a fourth slider (not shown); the second screw rod and the fourth sliding rail are both installed on the second lifting frame 305e in the vertical direction; one end of the second screw rod is in threaded connection with a second nut, and the other end of the second screw rod is connected with an output shaft of a second motor 504; the fourth slide rail is slidably connected to a fourth slider, which is connected to a fourth nut and the first Z-axis motion assembly 301.

When the output shaft of the second motor 504 rotates, the second screw rod is driven to rotate relative to the second nut, so that the second nut and the fourth slider move along the vertical direction relative to the second screw rod and the fourth sliding rail, and the first Z-axis moving assembly 301 is further driven to move along the vertical direction as a whole.

Wherein, when the lift installation frame includes the first lift frame 301e and the second lift frame 305e, it may be preferable that the first lift frame 301e is connected with the fourth slider.

Further, in order to guide the target access rack 20A when it moves in the vertical direction, so as to avoid a large shake, it is preferable that the lifting mechanism 30 further include a guide mechanism (not shown) for guiding the movement of the target access rack 20A in the vertical direction.

Specifically, referring to fig. 4, the guide mechanism may include a guide frame 307 and a guide wheel 308, the guide wheel 308 being disposed on the guide frame 307. When the lifting mechanism 30 drives the target access frame 20A to move in the vertical direction and pass through the access opening of the refrigerator 10 under the drive of the driving mechanism, the outer circumferential surface of the guide wheel 308 contacts the target access frame 20A, and the guide wheel 308 rotates relative to the guide frame 307.

Wherein, by providing the guide frame 307 and the guide wheel 308, not only the movement of the target access rack 20A in the vertical direction can be guided and assisted in sliding, but also the movement of the target access rack 20A in the vertical direction can be speed-adjusted by adjusting the surface roughness of the outer peripheral surface of the guide wheel 308.

In addition, the shapes and sizes of the guide frame 307 and the guide wheels 308 need to be matched with those of the target storage rack 20A, the number of the guide frame 307 and the guide wheels 308 is not limited, and the guide frame 307 and the guide wheels 308 can be reasonably arranged according to practical application requirements. For example, referring to fig. 4, the guide mechanism may include two guide frames 307 disposed in a vertical direction, and a plurality of guide wheels 308 are uniformly disposed on each guide frame 307.

Alternatively, in order to avoid adverse effects on the freezing box placed thereon due to a high external environmental temperature after the target access rack 20A is moved out of the low-temperature storage area 103 of the freezing refrigerator 10, it may be preferable to provide a heat insulating member outside the freezing refrigerator 10.

Specifically, referring to fig. 3, the lifting mechanism 30 further includes a heat-insulating frame layer 306 covered on the periphery of the clamping assembly 302, the heat-insulating frame layer 306 is located on the upper outer side of the refrigerator 10, and a heat-insulating space for accommodating the target access rack 20A is provided in the heat-insulating frame layer 306, so that the target access rack 20A moves only in the heat-insulating space after being removed from the low-temperature storage area 103 of the refrigerator 10. The specific structural composition, shape, size and material of the insulating frame layer 306 are not limited, and may be set according to the shape and size of the freezing frame 20 and the lifting mechanism 30.

Further, in order to further improve the cooling effect on the target access rack 20A in the insulation space, the freezing box access device further includes a cooling assembly (not shown) that generates cool air and transfers the generated cool air into the insulation space of the insulation frame layer 306.

Further, the cooling assembly may include a cool air supply tank (not shown) and an air supply duct (not shown) that communicates the inside of the cool air supply tank with the insulation space of the insulation frame layer 306, and the inside of the cool air supply tank is placed with a liquid that generates cool air. Wherein, through adopting the refrigeration subassembly that cold air supply tank and air feed pipeline constitute, the structure is comparatively simple to be convenient for assemble. The type of liquid in which the cold air is generated is not limited, and liquid nitrogen is preferable.

Further, in order to avoid the influence of the external hot air flowing into the low temperature storage area 103 of the refrigerator 10 on the freezing storage boxes stored in the low temperature storage area 103, it is preferable that the freezing storage box accessing apparatus further includes an air curtain (not shown) generating a low temperature air flow, wherein the air curtain is disposed at a side of the refrigerator 10.

When the air curtain machine is in an operating state, cold air can be blown out towards the upper side of the freezing and storing refrigerator 10 to form an air curtain above the freezing and storing refrigerator 10, in particular to form an air curtain above the access opening. For example, if the refrigerator 10 further includes a heat-preserving cover 101, when the heat-preserving cover 101 moves and the access opening is opened, cold air can be blown out toward the upper side of the refrigerator 10 by using the air curtain machine, so as to prevent heat at the upper portion of the refrigerator 10 from entering the low-temperature storage area 103 of the refrigerator 10.

The specific structural composition, the cold air generation principle, the shape and the size of the air curtain machine are not limited, and the air curtain machine can be reasonably arranged according to actual application requirements. For example, a certain amount of liquid nitrogen may be stored in the air curtain machine, and the gas phase liquid nitrogen generated after the liquid nitrogen undergoes a phase change may form cold air to blow above the freezing refrigerator 10.

Further, in order to make the cool air generated by the air curtain machine smoothly and intensively blow to the upper side of the refrigerator 10, the air curtain machine may include an air outlet (not shown) and a deflector (not shown), and the deflector is installed at the periphery of the air outlet. The inclination angle of the deflector is not limited, and the deflector can be reasonably set according to practical application requirements, but cold air flowing out from the air outlet can be guided to the top of the refrigerator 10 through the deflector.

Further, when the lifting mechanism 30 further includes a heat-insulating frame layer 306 covering the periphery of the clamping assembly 302, it may be preferable that the cool air flowing out from the air outlet be guided to an area between the top of the refrigerator 10 and the bottom of the heat-insulating frame layer 306 by the guide plate.

Further, in order to automatically control the movements of the lifting mechanism 30 and the push-in push-out mechanism 40, the cryopreservation cartridge access apparatus may further include a displacement sensing assembly (not shown) and a controller (not shown) electrically connected to the displacement sensing assembly and the driving mechanism.

When the displacement sensing detection component detects that the target storage area of the freezing shelf 20 is positioned at the position of the butting height with the pushing-in and pushing-out mechanism 40, a detection signal can be sent to the controller; after receiving the detection signal, the controller may send a control instruction to the driving mechanism, so that the driving mechanism stops driving the lifting mechanism 30 to move along the vertical direction, and further drives the push-push mechanism 40 to move along the first horizontal direction relative to the cryopreservation frame 20.

According to the description of the above embodiments of the present application, a workflow of storing a cryopreservation cassette into a cryopreservation refrigerator by a cryopreservation cassette access device includes: the lifting mechanism 30 is connected with the heat preservation cover 101 positioned at the upper part of the freezing refrigerator 10 and drives the heat preservation cover 101 to move so as to open the access opening of the freezing refrigerator 10; the lifting mechanism 30 moves to the upper part of the target access frame 20A and forms connection with the target access frame 20A, and drives the target access frame 20A to move upwards along the vertical direction, and the target access frame 20A passes through the access opening of the freezing and storing refrigerator 10 until the target storage area of the target access frame 20A is positioned at a height position in butt joint with the push-in and push-out mechanism 40; the push-out mechanism 40 moves in a first horizontal direction perpendicular to the vertical direction with respect to the target access rack 20A to push the cryopreservation cassette from the sample staging area on the tray 402 to the target storage area of the target access rack 20A; the lifting mechanism 30 drives the target access rack 20A to move downward in the vertical direction, and the target access rack 20A passes through the access opening of the refrigerator 10 until being smoothly placed in the low-temperature storage area of the refrigerator 10; the lifting mechanism 30 is disconnected from the target access rack 20A, and the lifting mechanism 30 is then connected to the thermal insulation cover 101, and drives the thermal insulation cover 101 to move so as to close the access opening.

The workflow of taking out the cryopreservation box from the cryopreservation refrigerator by the cryopreservation box storing and taking device comprises the following steps: the lifting mechanism 30 is connected with the heat preservation cover 101 positioned at the upper part of the freezing and storing refrigerator 10, and drives the heat preservation cover 101 to move so as to open the access opening; the lifting mechanism 30 moves to the upper part of the target access frame 20A and forms connection with the target access frame 20A, and drives the target access frame 20A to move upwards along the vertical direction, and the target access frame 20A passes through the access opening of the freezing and storing refrigerator 10 until the target storage area of the target access frame 20A is positioned at a height position in butt joint with the push-in and push-out mechanism 40; the push-out mechanism 40 moves in the first horizontal direction with respect to the target access rack 20A to push out the cryopreservation cassette from the target storage area of the target access rack 20A to the sample staging area of the tray 402.

As can be seen from the description of the above embodiments of the present application, the cryopreservation box access device provided in the embodiments of the present application improves the efficiency of taking out the cryopreservation box through the design of the position connection structure between the lifting mechanism 30, the pushing-in and pushing-out mechanism 40 and the driving mechanism, that is, the lifting mechanism 30 is connected with the target access rack 20A, so that the target access rack 20A can be lifted or lowered along the vertical direction; when the lifting mechanism 30 lifts the position of the target storage area to the height position where it interfaces with the push-out mechanism 40, the push-out mechanism 40 moves in the first horizontal direction with respect to the target access rack 20A to push the cryopreservation cassette into or out of the target storage area. Thus, when a certain freezing box located in the freezing refrigerator 10 is taken out, the freezing box located on the upper side of the freezing box is not required to be taken out as in the prior art, and then the freezing box can be taken out. Compared with the prior art, the frozen box storing and taking device provided by the application improves the efficiency of taking out the frozen box, so that the time consumption of storing and taking the frozen box is less, and the efficiency is higher.

In addition, the movement in a certain direction in the embodiments of the present application does not mean unidirectional movement in a certain direction, but means bidirectional movement in a certain direction. For example, referring to fig. 2, the vertical direction may be the z direction or the opposite direction in the coordinate system in the figure, and moving in the vertical direction means moving in the direction indicated by the z direction arrow in the figure or in the opposite direction; the first horizontal direction may be an x direction or a direction opposite thereto in the coordinate system in the drawing, and moving in the first horizontal direction means moving in a direction indicated by an x direction arrow in the drawing or a direction opposite thereto.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. The access device of the freezing storage box is characterized by comprising a lifting mechanism, a pushing-in and pushing-out mechanism and a driving mechanism, wherein,

the driving mechanism is respectively connected with the lifting mechanism and the pushing-in and pushing-out mechanism;

the pushing-in and pushing-out mechanism is arranged below the lifting mechanism;

2. The device according to claim 1, wherein the pushing-in and pushing-out mechanism comprises a pushing component and a tray, the tray comprises a sample temporary storage area, the pushing component is connected with the driving mechanism, and the sample temporary storage area is used for placing the frozen box to be stored in the target storage area or the frozen box to be taken out from the target storage area.

3. The device according to claim 2, wherein the pushing assembly comprises a pushing member, a first slide rail, a first slider, and a second slider, the pushing member and the pushing member being located on opposite sides of the sample buffer along the first horizontal direction, respectively; the pushing-out piece and the pushing-in piece are respectively connected with the driving mechanism; the first sliding rail is arranged along the first horizontal direction, the first sliding block and the second sliding block are respectively and slidably connected to two ends of the first sliding rail, the first sliding block is connected with the pushing-in piece, and the second sliding block is connected with the pushing-out piece; the pushing-out piece and the pushing-in piece can move along the first horizontal direction respectively under the driving of the driving mechanism.

4. The access device for a freezer according to claim 2, wherein the driving mechanism comprises a first reciprocating rectilinear motion cylinder and a second reciprocating rectilinear motion cylinder each disposed along the first horizontal direction; the pushing assembly comprises a pushing-out piece and a pushing-in piece; the piston rod of the first reciprocating rectilinear motion cylinder is connected with the pushing-in piece, and the piston rod of the second reciprocating rectilinear motion cylinder is connected with the pushing-out piece.

5. The device of claim 1, wherein the lifting mechanism comprises a first Z-axis motion assembly, a clamping assembly, a Y-axis motion assembly, and an X-axis motion assembly; the first Z-axis motion assembly, the Y-axis motion assembly and the X-axis motion assembly are respectively connected with the driving mechanism; the first Z-axis movement assembly, the pushing-in and pushing-out mechanism and the X-axis movement assembly are all connected with the Y-axis movement assembly;

6. The case access device of claim 1, wherein the lifting mechanism comprises a first Z-axis motion assembly, a clamping assembly, and a first lifting frame, the drive mechanism comprising a first motor;

The first Z-axis movement assembly comprises a first screw rod, a first nut, a third sliding rail and a third sliding block; the first screw rod and the third sliding rail are both arranged on the first lifting frame along the vertical direction; one end of the first screw rod is in threaded connection with the first nut, and the other end of the first screw rod is connected with an output shaft of the first motor; the third sliding rail is in sliding connection with the third sliding block, and the third sliding block is connected with the first nut and the clamping assembly.

7. The storage box access device according to claim 1, wherein the lifting mechanism comprises a first clamping portion, and the target access rack and the thermal cover of the refrigerator comprise a second clamping portion and a third clamping portion, respectively; the first clamping part is detachably connected with the second clamping part and the third clamping part.

8. The device of claim 1, wherein the lifting mechanism comprises a clamp assembly, a first Z-axis motion assembly, and a second Z-axis motion assembly; the first Z-axis motion assembly and the second Z-axis motion assembly are arranged along the vertical direction and are respectively connected with the driving mechanism; the first end of the first Z-axis movement assembly along the vertical direction is connected with the clamping assembly, and the second end of the first Z-axis movement assembly along the vertical direction is connected with the second Z-axis movement assembly;

9. The access device of any one of claims 5, 6, 8, wherein the lifting mechanism further comprises a thermal insulation frame layer covering the periphery of the clamping assembly, the thermal insulation frame layer having a thermal insulation space therein for accommodating the target access rack.

10. The storage and retrieval device according to claim 9, further comprising a cold air supply tank and an air supply duct, the air supply duct communicating an interior of the cold air supply tank with the insulation space of the insulation frame layer, the interior of the cold air supply tank being filled with a liquid that generates cold air.