CN116081104A

CN116081104A - Tube picking device

Info

Publication number: CN116081104A
Application number: CN202310063791.1A
Authority: CN
Inventors: 李吉宁; 张守兵; 陈军; 魏秋生; 马云飞; 李鑫; 王宁
Original assignee: Qingdao Haier Biomedical Co Ltd
Current assignee: Qingdao Haier Biomedical Co Ltd
Priority date: 2023-01-12
Filing date: 2023-01-12
Publication date: 2023-05-09

Abstract

The invention belongs to the technical field of tube picking equipment, and particularly provides a tube picking device. The pipe jacking mechanism aims at solving the problem that the pipe jacking efficiency is low because only one frozen storage pipe can be jacked up at a time in the existing pipe jacking device. The tube picking device comprises a tube picking barrel, a tray, a standard freezing box and a biological sample freezing box which are positioned on the tray, a driving mechanism, a first jacking tube assembly and a second jacking tube assembly, wherein a tube picking opening is formed in the top wall of the tube picking barrel; the tray is fixedly arranged in the tube picking barrel, and the driving mechanism is arranged at the outer side of the tube picking barrel; the driving mechanism can independently drive the first pipe jacking assembly and the second pipe jacking assembly to move up and down along the vertical direction, and the first pipe jacking assembly and the second pipe jacking assembly can jack up the partial freezing storage pipe positioned in the biological sample freezing storage box and the partial freezing storage pipe positioned in the standard freezing storage box simultaneously in the vertical upward moving process. The pipe jacking assembly in the pipe picking device can jack up a plurality of freezing pipes simultaneously, and can improve pipe picking efficiency.

Description

Tube picking device

Technical Field

The invention belongs to the technical field of tube picking equipment, and particularly provides a tube picking device.

Background

In the biomedical field, the sample freezing and storing device is used for storing biological samples such as blood samples, vaccines, bacterial toxins and the like at low temperature, so that the samples are always in liquid nitrogen for long-term active storage. The device is provided with a plurality of sample boxes, a plurality of test tubes are arranged in the sample boxes, and samples to be stored are stored in the freezing storage tubes.

In the existing freezing equipment, the whole sample box is stored and taken out mostly, when a part of freezing pipes are stored, the freezing boxes need to be picked from the sample box through a picking pipe system and transferred to a target sample box, and the existing picking pipe system usually comprises a pipe jacking device so as to eject the freezing pipes needing to be picked.

The existing pipe jacking mechanism is only provided with one ejector rod, one frozen storage pipe can be lifted up at a time, when a plurality of frozen storage pipes are required to be picked and transferred, the pipe jacking mechanism can be matched with the pipe picking mechanism to finish pipe picking, the required time is long, and the pipe picking efficiency is low.

Accordingly, there is a need in the art for a new solution to the above-mentioned technical problems.

Disclosure of Invention

The invention aims to solve the technical problems that the pipe jacking efficiency is low because the pipe jacking mechanism in the traditional pipe jacking device can jack up only one frozen storage pipe at a time.

The invention provides a tube picking device, which comprises: the top wall of the tube picking barrel is provided with a tube picking opening; the tray is fixedly arranged in the tube picking barrel and positioned below the tube picking opening, and a first accommodating cavity and a second accommodating cavity are formed in the tray; a standard cryopreservation cassette disposed within the first receiving cavity; a biological sample cryopreservation cassette placed in the second receiving cavity, the stored number of the biological sample cryopreservation cassettes being greater than the stored number of the standard cryopreservation cassettes; the driving mechanism is arranged on the outer side of the tube picking barrel; the first pipe jacking assembly is arranged in the pipe picking barrel, one end of the first pipe jacking assembly penetrates out of the pipe picking barrel and is connected with the driving mechanism, and the second pipe jacking assembly is arranged in the pipe picking barrel, one end of the second pipe jacking assembly penetrates out of the pipe picking barrel and is connected with the driving mechanism; the driving mechanism can drive the first pipe jacking assembly and the second pipe jacking assembly to move up and down along the vertical direction relative to the pipe picking barrel independently, wherein the first pipe jacking assembly and the second pipe jacking assembly can jack up the partial freezing pipe positioned in the biological sample freezing box and the partial freezing pipe positioned in the standard freezing box simultaneously in the vertical upward moving process.

In the preferred technical scheme of the pipe picking device, the driving mechanism drives the second pipe jacking assembly to vertically move downwards in the process of driving the first pipe jacking assembly to vertically move upwards, and drives the second pipe jacking assembly to vertically move upwards in the process of driving the first pipe jacking assembly to vertically move downwards.

In a preferred technical solution of the above tube picking device, the driving mechanism includes a fixing member, a driving member mounted on the fixing member, a gear, a first connecting member, a second connecting member, a first rack and a second rack; the first rack is vertically arranged on the first connecting member, the second rack is vertically arranged on the second connecting member, the first connecting member is connected with the first jacking pipe assembly, and the second connecting member is connected with the second jacking pipe assembly; the driving member is connected with the gear, the first rack and the second rack are respectively positioned on the left side and the right side of the gear and meshed with the gear, and the driving member can drive the gear to rotate so as to drive the first rack, the first connecting member, the first jacking pipe assembly, the second rack, the second connecting member and the second jacking pipe assembly to move up and down along the vertical direction; the driving member can drive the first rack, the first connecting member and the first jacking pipe assembly to vertically move upwards in the process of driving the gear to rotate along a first direction, and simultaneously drive the second rack, the second connecting member and the second jacking pipe assembly to vertically move downwards; the driving member can drive the second rack, the second connecting member and the second jacking pipe assembly to vertically move upwards in the process of driving the gear to rotate along the second direction, and simultaneously drive the first rack, the first connecting member and the first jacking pipe assembly to vertically move downwards; the first direction is opposite to the second direction.

In the preferred technical solution of the above tube picking device, the tube picking device further includes a first guiding and limiting mechanism, and the first guiding and limiting mechanism is disposed between the fixing member and the first connecting member, so as to guide the first connecting member and limit the movement of the first connecting member in the horizontal direction during the vertical movement of the first connecting member; and/or the tube picking device further comprises a second guiding and limiting mechanism, wherein the second guiding and limiting mechanism is arranged between the fixed component and the second connecting component so as to guide the second connecting component and limit the movement of the second connecting component in the horizontal direction in the process of vertically moving the second connecting component up and down.

In the preferred technical scheme of the pipe picking device, the first pipe jacking assembly comprises a first connecting rod, a first transmission assembly, a first top plate, a plurality of first ejector rods, a plurality of second ejector rods and a first guide structure, wherein the first ejector rods, the plurality of second ejector rods and the first guide structure are arranged on the first top plate, and the second guide structure is arranged at a position corresponding to the first guide structure; the top of the first connecting rod is connected with the first connecting member, the bottom of the first connecting rod is connected with the first top plate through the first transmission assembly, the first ejector rods are respectively located below the test tube placing holes in the standard freezing storage box and are arranged in one-to-one correspondence with the test tube placing holes, the second ejector rods are respectively located below the test tube placing holes in the biological sample freezing storage box and are arranged in one-to-one correspondence with the test tube placing holes, the first connecting member drives the first connecting rod to move upwards in the vertical upward moving process, and the first connecting rod drives the first top plate to move upwards through the first transmission assembly simultaneously, and enables the first top plate to move along the vertical direction under the cooperation of the first guide structure, so that the first ejector rods and the second ejector rods are respectively located a plurality of frozen storage tubes in the standard freezing storage box and a plurality of frozen storage tubes in the biological sample freezing storage box.

In the preferred technical scheme of the pipe picking device, the second pipe jacking assembly comprises a second connecting rod, a second transmission assembly, a second top plate, a plurality of third ejector rods, a plurality of fourth ejector rods and a third guide structure, wherein the third ejector rods, the fourth ejector rods and the third guide structure are arranged on the second top plate, and the fourth guide structure is arranged at a position corresponding to the third guide structure; the second connecting rod is vertically arranged and penetrates through the top wall of the tube picking barrel, the top end of the second connecting rod is connected with the second connecting member, the bottom end of the second connecting rod is connected with the second top plate through the second transmission assembly, a plurality of third ejector rods are respectively arranged below a plurality of tube placing holes in the standard freezing storage box and are in one-to-one correspondence with the tube placing holes, a plurality of fourth ejector rods are respectively arranged below part of tube placing holes in the biological sample freezing storage box and are in one-to-one correspondence with the tube placing holes, the second connecting member drives the second connecting rod to move upwards in the vertical upward moving process, the second connecting rod drives the second top plate to move upwards through the second transmission assembly at the same time, and the second top plate moves along the vertical direction under the cooperation of the third guide structure and the fourth guide member, so that a plurality of third ejector rods and a plurality of fourth ejector rods respectively eject a plurality of freezing storage tubes in the standard freezing storage box and a plurality of freezing storage tubes in the biological sample freezing storage box at the same time; the second top plate is located below the first top plate, and the third ejector rod and the fourth ejector rod penetrate through the first top plate.

In the preferred technical scheme of the tube picking device, the tube placing holes in the standard freezing box are distributed in a plurality of rows or columns, the first ejector rods respectively correspond to the tube placing holes in odd rows or odd columns in the standard freezing box, and the third ejector rods respectively correspond to the tube placing holes in even rows or even columns in the standard freezing box; the test tube placing holes in the biological sample freezing box are distributed in a plurality of rows or columns, a plurality of second ejector rods respectively correspond to the test tube placing holes in the odd rows or the odd columns in the biological sample freezing box, and a plurality of fourth ejector rods respectively correspond to the test tube placing holes in the even rows or the even columns in the standard freezing box.

In the preferred technical scheme of the pipe picking device, the first connecting rod comprises a first plastic rod and a first metal rod which are connected, the top end of the first plastic rod penetrates through the top wall of the pipe picking barrel to be connected with the first connecting member, the bottom end of the first plastic rod is connected with the top end of the first metal rod, and the bottom end of the first metal rod is connected with the first top plate through the first transmission assembly; and/or the second connecting rod comprises a second plastic rod and a second metal rod which are connected, the top end of the second plastic rod penetrates through the top wall of the tube picking barrel to be connected with the second connecting member, the bottom end of the second plastic rod is connected with the top end of the second metal rod, and the bottom end of the second metal rod is connected with the second top plate through the second transmission assembly.

In the preferred technical solution of the above tube picking device, the tube picking device further includes a third guiding and limiting mechanism mounted on the tray, the third guiding and limiting mechanism is configured to guide the first metal rod and the second metal rod in the process of moving the first metal rod and the second metal rod up and down so that the first metal rod and the second metal rod move in a vertical direction, and limit the travel of moving the first metal rod and the second metal rod up and down.

In the preferred technical scheme of the pipe picking device, the first transmission assembly comprises a first transmission joint, a second transmission joint, a first connecting arm and a first supporting arm, the top end of the first connecting arm is mounted on the bottom wall of the first top plate, the top end of the first supporting arm is mounted on the tray, the first end of the first transmission joint is pivotally connected with the bottom end of the first connecting rod, the second end of the first transmission joint is pivotally connected with the first end of the second transmission joint, the second end of the second transmission joint is pivotally connected with the bottom end of the first supporting arm, the second transmission joint is horizontally arranged, a first connecting end is arranged in the middle of the second transmission joint, and the bottom end of the first connecting arm is pivotally connected with the first connecting end; the second transmission assembly comprises a third transmission joint, a fourth transmission joint, a second connecting arm and a second supporting arm, the top end of the second connecting arm is arranged on the bottom wall of the second top plate, the top end of the second supporting arm is arranged on the tray, the first end of the third transmission joint is pivotally connected with the bottom end of the second connecting rod, the second end of the third transmission joint is pivotally connected with the first end of the fourth transmission joint, the second end of the fourth transmission joint is pivotally connected with the bottom end of the second supporting arm, the fourth transmission joint is horizontally arranged, a second connecting end is arranged in the middle of the fourth transmission joint, and the bottom end of the second connecting arm is pivotally connected with the second connecting end; the bottom end of the first supporting arm penetrates through the second top plate and is located below the second top plate.

In the preferred technical scheme of the tube picking device, two first accommodating cavities are formed, and two standard freezing boxes are arranged and located in the two first accommodating cavities respectively.

Under the condition that the technical scheme is adopted, the pipe picking device can drive the first pipe jacking assembly and the second pipe jacking assembly to move up and down along the vertical direction independently through the driving mechanism, and the first pipe jacking assembly and the second pipe jacking assembly can jack up part of the freezing pipes in the standard freezing box and part of the freezing pipes in the biological sample freezing box simultaneously in the vertical upward moving process, so that the pipe picking device can jack up a plurality of freezing pipes simultaneously in one pipe jacking operation, and the pipe picking efficiency is improved; in addition, the standard freezing box and the biological sample freezing box are simultaneously placed in the tray of the tube picking device, so that the freezing tube can be transferred between the standard freezing box and the biological sample freezing box, tube picking operation can be carried out on different freezing boxes, and the application range of the tube picking device is improved.

Further, the driving mechanism drives the second pipe jacking assembly to vertically move downwards in the process of driving the first pipe jacking assembly to vertically move upwards, and the driving mechanism drives the second pipe jacking assembly to vertically move upwards in the process of driving the first pipe jacking assembly to vertically move downwards.

Further, the driving mechanism is arranged to be a fixing member and a driving member, a gear, a first connecting member, a second connecting member, a first rack and a second rack which are arranged on the fixing member, wherein the driving member can drive the gear to rotate so as to drive the first rack and the second rack to move reversely along the vertical direction, and then drive the first connecting member and the second connecting member to move reversely along the vertical direction, so that the first jacking pipe assembly and the second jacking pipe assembly are respectively driven to move up and down along the vertical direction.

Still further, a first guide stopper mechanism is provided between the fixing member and the first connecting member so as to guide the first connecting member in the process of moving the first connecting member up and down in the vertical direction, thereby moving the first connecting member in the vertical direction, and being capable of restricting the movement of the first connecting member in the horizontal direction, so that the first connecting member is kept stable and not inclined in the process of moving the first connecting member up and down vertically.

Still further, a second guide limiting mechanism is provided between the fixing member and the second connecting member so as to guide the second connecting member in the process of moving the second connecting member up and down in the vertical direction, thereby moving the second connecting member in the vertical direction, and being capable of limiting the movement of the second connecting member in the horizontal direction, so that the second connecting member is kept stable and not inclined in the process of moving the second connecting member up and down vertically.

Still further, set up first push pipe subassembly into head rod, first drive assembly, first roof and set up a plurality of first ejector pins, a plurality of second ejector pins and first guide structure on first roof, and set up the second guide structure in the corresponding position of tray and first guide structure, wherein, the roof of picking the tub is worn out on the top of head rod and is connected with first connecting member, the bottom of head rod is connected with first roof through first drive assembly, such setting mode, first connecting member drives the vertical upward movement of head rod in the vertically upward moving in-process, thereby drive first roof through first drive assembly, first ejector pin and second ejector pin vertical upward movement under first guide structure and second guide structure's cooperation simultaneously, it is ejecting simultaneously to be located a plurality of cryopreservation pipes of standard cryopreservation box and a plurality of cryopreservation pipes that are located biological sample cryopreservation box, and simple structure, and the effect of push pipe in batches is good.

Still further, set up second push pipe subassembly into second connecting rod, second drive assembly, the second roof and set up a plurality of third ejector pins on the second roof, a plurality of fourth ejector pin and third guide structure, and set up fourth guide structure in the tray with the corresponding position of third guide structure, wherein, the roof of picking the tub is worn out on the top of second connecting rod is connected with second connecting member, the bottom of second connecting rod passes through second drive assembly and is connected with the second roof, such setting mode, second connecting member drives the vertical upward movement of second connecting rod in the vertically upward movement's of in-process, thereby drive the vertical upward movement of second roof through second drive assembly simultaneously under the cooperation of third guide structure and fourth guide structure, a plurality of cryopreservation pipes that will be located in the standard cryopreservation box and a plurality of cryopreservation pipes that are located in the biological sample cryopreservation box are ejecting simultaneously, the structure is simple, and the effect of push pipe in batches is good.

Further, the first ejector rod corresponds to the test tube placing holes of the odd-numbered rows or the odd-numbered columns in the standard freezing box respectively, the second ejector rod corresponds to the test tube placing holes of the odd-numbered rows or the odd-numbered columns in the biological sample freezing box respectively, the third ejector rod corresponds to the test tube placing holes of the even-numbered rows or the even-numbered columns in the standard freezing box respectively, and the fourth ejector rod corresponds to the test tube placing holes of the even-numbered rows or the even-numbered columns in the biological sample freezing box respectively; by means of the arrangement mode, after the corresponding freezing pipes are jacked, enough pipe picking spaces are reserved among the freezing pipes in different rows or columns, the jacked freezing pipes can be conveniently and smoothly picked, the first pipe jacking assembly and the second pipe jacking assembly are suitable for freezing boxes with different storage densities, and the first pipe jacking assembly and the second pipe jacking assembly are more suitable for the freezing boxes with high storage densities.

Still further, set up the head rod from top to bottom into first plastic pole and first metal pole, first plastic pole runs through the roof setting of choosing the tub bucket, can be when not choosing the tub operation and will choosing the mouth of pipe to seal, effectively prevent to choose the intraductal air conditioning of tub to diffuse outside choosing the tub bucket through the head rod, make and choose the intraductal stable low temperature environment that keeps of tub.

Still further, set up the second connecting rod from top to bottom into second plastic pole and second metal pole, the second plastic pole runs through the roof setting of choosing the tub bucket, can be when not choosing the tub operation and will choosing the mouth of pipe to seal, effectively prevent to choose the intraductal air conditioning of tub to diffuse outside choosing the tub bucket through the second connecting rod, make and choose the intraductal stable low temperature environment that keeps of tub.

Still further, set up third direction stop gear and can lead when first metal pole and second metal pole remove, make it remove along vertical direction to can restrict the stroke of first metal pole and second metal pole, thereby prevent that the push pipe is excessive.

Still further, set up first drive assembly into first transmission joint, second transmission joint, first linking arm and first support arm, set up second drive assembly into third transmission joint, fourth transmission joint, second linking arm and second support arm, simple structure, convenient equipment is used to the transmission is effectual.

Drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

FIG. 1 is a schematic perspective view of a tube picking device of the present invention;

fig. 2 is a schematic diagram of a three-dimensional structure of the tube picking device after hiding a tube picking barrel;

Fig. 3 is a schematic diagram of a second perspective structure of the pipe picking device after hiding the pipe picking barrel;

FIG. 4 is a schematic view of the first and second push tube assemblies of the present invention mated with a tray;

fig. 5 is a schematic structural view of the tray of the present invention.

List of reference numerals:

1. a tube picking barrel; 11. picking a pipe orifice;

2. a tray; 21. a first accommodation chamber; 22. a second accommodation chamber; 23 a second guide structure; 24. a fourth guide structure; 25. a first elastic positioning member; 26. a second elastic positioning member;

3. standard cryopreservation boxes;

4. a biological sample cryopreservation box;

5. a driving mechanism; 51. a fixing member; 52. a driving member; 53. a gear; 54. a first connecting member; 55. a second connecting member; 56. a first rack; 57. a second rack;

6. a first jacking pipe assembly; 61. a first connecting rod; 611. a first plastic rod; 612. a first metal rod; 6121. a first sliding member; 62. a first transmission assembly; 621. a first drive joint; 622. a second drive joint; 6221. a first connection end; 623. a first connecting arm; 624. a first support arm; 63. a first top plate; 64. a first ejector rod; 65. a second ejector rod; 66. a first guide structure;

7. A second jacking pipe assembly; 71. a second connecting rod; 711. a second plastic rod; 712. a second metal rod; 7121. a second sliding member; 72. a second transmission assembly; 721. a third drive joint; 722. a fourth drive joint; 7221. a second connection end; 723. a second connecting arm; 724. a second support arm; 73. a second top plate; 74. a third ejector rod; 75. a fourth ejector rod; 76. a third guide structure;

8. the first guiding and limiting mechanism; 81. a first guide slider; 82. a first guide rail;

9. the second guiding and limiting mechanism; 91. a second guide slider; 92. a second guide rail;

10. the third guiding and limiting mechanism; 101. a mounting member; 102. a guide member; 1021. a first guide hole; 1022. a second guide hole; 103. a limiting member; 1031. a first chute; 1032. and a second chute.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.

It should be noted that, in the description of the present invention, terms such as "above," "below," "top wall," "bottom wall," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through other members. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.

The pipe jacking mechanism in the existing pipe picking device based on the background technology can jack up only one freezing storage pipe at a time, so that the problem of low pipe picking efficiency is caused. The first pipe jacking component and the second pipe jacking component are arranged in the pipe picking device, the driving mechanism can respectively drive the first pipe jacking component and the second pipe jacking component to move up and down along the vertical direction relative to the pipe picking barrel, and the first pipe jacking component and the second pipe jacking component can jack up part of the frozen storage pipes in the biological sample frozen storage box and part of the frozen storage pipes in the standard frozen storage box simultaneously in the vertical upward moving process, so that batch pipe jacking can be realized, and the pipe picking efficiency is improved; in addition, the standard freezing box and the biological sample freezing box are simultaneously placed in the tray of the tube picking device, so that the tube jacking operation can be carried out on different freezing boxes, the application range is wide, and the operation is convenient.

Specifically, as shown in fig. 1, the tube picking device of the invention comprises a tube picking barrel 1, a tray 2, a standard freezing box 3, a biological sample freezing box 4, a driving mechanism 5, a first tube jacking assembly 6 and a second tube jacking assembly 7.

Wherein, the top wall of the tube picking barrel 1 is provided with a tube picking opening 11; the tray 2 is fixedly arranged in the tube picking barrel 1 and positioned below the tube picking opening 11, and a first accommodating cavity 21 and a second accommodating cavity 22 are formed in the tray 2; the standard freezing box 3 is placed in the first accommodating cavity 21; the biological sample freezing box 4 is placed in the second accommodating cavity 22, and the storage quantity of the biological sample freezing box 4 is larger than that of the standard freezing box 3; the driving mechanism 5 is arranged on the outer side of the tube picking barrel 1; the first pipe jacking component 6 is arranged in the pipe picking barrel 1, one end of the first pipe jacking component penetrates out of the pipe picking barrel 1 and is connected with the driving mechanism 5, and the second pipe jacking component 7 is arranged in the pipe picking barrel 1, one end of the second pipe jacking component penetrates out of the pipe picking barrel 1 and is connected with the driving mechanism 5.

The driving mechanism 5 can independently drive the first pipe jacking component 6 and the second pipe jacking component 7 to move up and down along the vertical direction relative to the pipe picking barrel 1, wherein the first pipe jacking component 6 and the second pipe jacking component 7 can jack up the partial freezing storage pipe positioned in the biological sample freezing storage box 4 and the partial freezing storage pipe positioned in the standard freezing storage box 3 simultaneously in the vertical upward moving process.

When the pipe picking device is used, the driving mechanism 5 can respectively drive the first pipe jacking component 6 and the second pipe jacking component 7 to move up and down along the vertical direction, and when the first pipe jacking component 6 and the second pipe jacking component 7 perform pipe jacking operation, a plurality of frozen storage pipes can be simultaneously ejected, so that time can be saved for picking pipes in batches, and pipe picking efficiency can be improved. In addition, the tray 2 in the tube picking barrel 1 of the tube picking device can simultaneously place the biological sample freezing box 4 and the standard freezing box 3, so that the tube picking device can be used for freezing boxes with different storage amounts and storage densities, and has wide application range and more convenient use.

It should be noted that, the standard cryopreservation box 3 in the present invention makes the SBS standard cryopreservation box conventionally used in the market at present, and the biological sample cryopreservation box 4 in the present invention is a high-density storage cryopreservation box which is developed by a manufacturer for improving the storage quantity, and the specific structure and the storage quantity of the high-density storage cryopreservation box can be set by the manufacturer, which is not limited herein.

It should be noted that, the specific structure of the driving mechanism 5 is not limited in the present invention, so long as the driving mechanism 5 can independently drive the first jacking pipe assembly 6 and the second jacking pipe assembly 7 to move up and down along the vertical direction, so as to facilitate the jacking operation, and in practical application, a person skilled in the art can set the specific structure of the driving mechanism 5 according to the actual needs. For example, the driving mechanism 5 may be provided as two driving members that drive the first push pipe assembly 6 and the second push pipe assembly 7 to move up and down in the vertical direction, respectively; alternatively, the driving mechanism may be configured as a driving member that drives the first push pipe assembly 6 and the second push pipe assembly 7 to move up and down in the vertical direction through the transmission assembly, and as long as the first push pipe assembly 6 and the second push pipe assembly 7 do not interfere with each other after pushing the pipes. Such modifications and changes in the specific structure of the driving mechanism 5 do not depart from the basic principle of the present invention and should be limited to the scope of the present invention.

Preferably, the driving mechanism 5 drives the second jacking pipe assembly 7 to vertically move downwards in the process of driving the first jacking pipe assembly 6 to vertically move upwards; the driving mechanism 5 drives the second jacking pipe assembly 7 to vertically move upwards in the process of driving the first jacking pipe assembly 6 to vertically move downwards.

In the process of driving the first pipe jacking assembly 6 to vertically move upwards, the driving mechanism 5 drives the second pipe jacking assembly 7 to vertically move downwards, and at the moment, the first pipe jacking assembly 6 performs pipe jacking operation to jack up a part of the freezing pipes corresponding to the first pipe jacking assembly and positioned in the biological sample freezing box 4 and a part of the freezing pipes corresponding to the first pipe jacking operation and positioned in the standard freezing box 3; in the process of driving the second pipe jacking assembly 7 to vertically move upwards, the driving mechanism 5 drives the first pipe jacking assembly 6 to vertically move downwards, and at the moment, the second pipe jacking assembly 7 carries out pipe jacking operation to jack up the corresponding part of the frozen storage pipes in the biological sample frozen storage box 4 and the corresponding part of the frozen storage pipes in the standard frozen storage box 3 at the same time; such an arrangement can reduce costs by providing one driving member to simultaneously drive the operation of the first push pipe assembly 6 and the second push pipe assembly 7.

Preferably, as shown in fig. 2 and 3, the driving mechanism 5 includes a fixing member 51, and a driving member 52, a gear 53, a first connection member 54, a second connection member 55, a first rack 56, and a second rack 57 mounted on the fixing member 51.

Wherein, the first rack 56 is vertically installed on the first connecting member 54, the second rack 57 is vertically installed on the second connecting member 55, the first connecting member 54 is connected with the first jacking pipe assembly 6, and the second connecting member 55 is connected with the second jacking pipe assembly 7; the driving member 52 is connected with the gear 53, and the first rack 56 and the second rack 57 are respectively located at the left side and the right side of the gear 53 and meshed with the gear 53, and the driving member 52 can drive the gear 53 to rotate so as to drive the first rack 56, the first connecting member 54, the first jacking pipe assembly 6, the second rack 57, the second connecting member 55 and the second jacking pipe assembly 7 to move up and down in the vertical direction. The driving member 52 drives the gear 53 to rotate during operation, thereby simultaneously driving the first rack 56 and the second rack 57 to move in the vertical direction, and the first rack 56 and the second rack 57 to move reversely in the vertical direction, thereby respectively driving the first push pipe assembly 6 and the second push pipe assembly 7 to move up and down in the vertical direction.

The driving member 52 can drive the first rack 56, the first connecting member 54 and the first push pipe assembly 6 to vertically move upwards and simultaneously drive the second rack 57, the second connecting member 55 and the second push pipe assembly 7 to vertically move downwards in the process that the driving gear 53 rotates in the first direction.

In the process of rotating the driving gear 53 along the second direction, the driving member 52 can drive the second rack 57, the second connecting member 55 and the second jacking pipe assembly 7 to vertically move upwards, and simultaneously drive the first rack 56, the first connecting member 54 and the first jacking pipe assembly 6 to vertically move downwards; the first direction is opposite to the second direction.

The driving mechanism 5 is arranged in a structure form that the driving member 52 is matched with the gear 53 and the rack, the structure is simple, the assembly and the use are convenient, and the driving effect is good.

Preferably, as shown in fig. 2, the pipe picking apparatus of the present invention further includes a first guide and limiting mechanism 8, the first guide and limiting mechanism 8 being disposed between the fixing member 51 and the first connecting member 54 so as to guide the first connecting member 54 during the up and down movement of the first connecting member 54 in the vertical direction and to be able to limit the movement of the first connecting member 54 in the horizontal direction.

The first connecting member 54 moves in the vertical direction under the guiding action of the first guide stopper mechanism 8 while moving up and down with the first rack 56, and can be kept stable without tilting.

It should be noted that, the specific structure of the first guiding and limiting mechanism 8 is not limited in the present invention, as long as the first guiding and limiting mechanism 8 can guide the first connecting member 54 in the process of moving the first connecting member 54 up and down, and can limit the movement of the first connecting member 54 in the horizontal direction, and in practical application, a person skilled in the art can set the specific structure of the first guiding and limiting mechanism 8 according to actual needs.

Preferably, as shown in fig. 2, the first guiding and limiting mechanism 8 includes a first guiding sliding block 81 and a first guiding rail 82, the first guiding sliding block 81 is mounted on the first connecting member 54, the first guiding rail 82 is vertically mounted on the fixing member 51, a first guiding chute (not shown in the drawing) is formed on the first guiding sliding block 81, the first guiding rail 82 is located in the first guiding chute and can slide along the length direction of the first guiding chute, the first guiding chute can limit the movement of the first guiding rail 82 in the width direction of the first guiding chute, two first limiting grooves (not shown in the drawing) which extend vertically are formed on two side walls of the first guiding rail 82, two first limiting blocks (not shown in the drawing) are relatively arranged on the inner groove wall of the first guiding chute, the two first limiting blocks are located in the two first limiting grooves respectively and can move along the length direction of the first limiting grooves, and the first limiting blocks can limit the movement of the first limiting blocks in the width direction of the first limiting grooves.

The first guide rail 82 is located in the first guide chute, the first guide chute can limit the movement of the first guide rail 82 in the width direction of the first guide chute, the first limiting block is located in the first limiting groove, and the first limiting groove can limit the movement of the first limiting block in the width direction of the first limiting groove, so that the first connecting member 54 can be kept stable and not moving in the horizontal direction, and the guide and limiting effect is good.

Preferably, as shown in fig. 2, the tube picking apparatus of the present invention further includes a second guide and limiting mechanism 9, the second guide and limiting mechanism 9 being disposed between the fixing member 51 and the second connection member 55 so as to guide the second connection member 55 during the vertical up and down movement of the second connection member 55 and to be able to limit the movement of the second connection member 55 in the horizontal direction.

The second connection member 55 moves in the vertical direction under the guide of the second guide stopper mechanism 9 while moving up and down with the second rack gear 57, and can be kept stable without tilting.

It should be noted that, the specific structure of the second guiding and limiting mechanism 9 is not limited in the present invention, as long as the second guiding and limiting mechanism 9 can guide the second connecting member 55 in the process of moving the second connecting member 55 up and down, and can limit the movement of the second connecting member 55 in the horizontal direction, and in practical application, a person skilled in the art can set the specific structure of the second guiding and limiting mechanism 9 according to actual needs.

Preferably, as shown in fig. 2, the second guiding and limiting mechanism 9 includes a second guiding slider 91 and a second guiding rail 92, the second guiding slider 91 is mounted on the second connecting member 55, the second guiding rail 92 is vertically mounted on the fixing member 51, a second guiding chute (not shown in the drawing) is formed on the second guiding slider 91, the second guiding rail 92 is located in the second guiding chute and can slide along the length direction of the second guiding chute, the second guiding chute can limit the movement of the second guiding rail 92 in the width direction of the second guiding chute, two side walls of the second guiding rail 92 are formed with second limiting grooves (not shown in the drawing) extending vertically, two second limiting blocks (not shown in the drawing) are relatively arranged on the inner groove wall of the second guiding chute, and the two second limiting blocks are located in the two second limiting grooves respectively and can move along the length direction of the second limiting grooves, and the second limiting blocks can limit the movement of the second limiting blocks in the width direction of the second limiting grooves.

The second guide rail 92 is located the second guide spout, and the second guide spout can restrict the second guide rail 92 at the ascending removal of the width direction of second guide spout, and the second stopper is located the second spacing inslot, and the second spacing inslot can restrict the second stopper at the ascending removal of the width direction of second spacing inslot to can make second connecting element 55 keep stable not moving in the horizontal direction, its simple structure, direction and spacing effectual.

Preferably, as shown in fig. 2 to 4, the first push bench assembly 6 includes a first connecting rod 61, a first transmission assembly 62, a first top plate 63, and a plurality of first push rods 64, a plurality of second push rods 65, and a first guide structure 66 provided on the first top plate 63, and the tray 2 is provided with the second guide structure 23 at a position corresponding to the first guide structure 66.

The first connecting rod 61 is vertically arranged and penetrates through the top wall of the tube picking barrel 1, the top end of the first connecting rod 61 is connected with the first connecting member 54, the bottom end of the first connecting rod 61 is connected with the first top plate 63 through the first transmission assembly 62, the plurality of first ejector rods 64 are respectively located below the plurality of test tube placing holes in the standard freezing storage box 3 and are in one-to-one correspondence with the test tube placing holes, and the plurality of second ejector rods 65 are respectively located below the part of test tube placing holes in the biological sample freezing storage box 4 and are in one-to-one correspondence with the test tube placing holes.

The first connecting member 54 drives the first connecting rod 61 to move upwards in the vertical upward moving process, the first connecting rod 61 drives the first top plate 63 to move upwards through the first transmission assembly 62 at the same time, and the first top plate 63 moves along the vertical direction under the cooperation of the first guide structure 66 and the second guide structure 23, so that the plurality of first ejector rods 64 and the plurality of second ejector rods 65 eject a plurality of freezing tubes located in the standard freezing box 3 and a plurality of freezing tubes located in the biological sample freezing box 4 at the same time.

The top of head rod 61 runs through the roof of choosing tub 1 and is connected with first connecting element 54, the bottom of head rod 61 is connected with first roof 63 through first drive assembly 62, thereby in the vertically upward mobile in-process along with first connecting element 54, can drive first roof 63 through first drive assembly 62 and upwards move, and make first roof 63 vertically upwards move under the cooperation of first guide structure 66 and second guide structure 23, thereby a plurality of first ejector pins 64 and a plurality of second ejector pins 65 can be respectively with a plurality of cryopreservation pipes that are located in standard cryopreservation box 3 and a plurality of cryopreservation pipes that are located in biological sample cryopreservation box 4 simultaneously upwards jack-up, and whole simple structure facilitates the equipment and uses.

It should be noted that, the specific structural shapes of the first guide structure 66 and the second guide structure 23 are not limited in the present invention, so long as the first guide structure 66 and the second guide structure 23 can move vertically in the process of moving the first top plate 63 up and down in cooperation, and in practical application, a person skilled in the art can set the specific structural shapes of the first guide structure 66 and the second guide structure 23 according to actual needs. For example, the first guide structure 66 may be provided as a vertically upwardly extending guide post, the second guide structure 23 may be provided as a guide hole in which the guide post is located, or alternatively, the second guide structure 23 may be provided as a vertically downwardly extending guide post, the first guide structure 66 may be provided as a guide hole in which the guide post is located, or the like. Such modifications and changes in the specific structural shapes of the first guide structure 66 and the second guide structure 23 do not depart from the basic principle of the present invention and are intended to be within the scope of the present invention.

Preferably, as shown in fig. 2 to 4, the second push bench assembly 7 includes a second connection rod 71, a second transmission assembly 72, a second top plate 73, and a plurality of third push rods 74, a plurality of fourth push rods 75, and a third guide structure 76 provided on the second top plate 73, and the tray 2 is provided with the fourth guide structure 24 at a position corresponding to the third guide structure 76.

The second connecting rod 71 is vertically arranged and penetrates through the top wall of the tube picking barrel 1, the top end of the second connecting rod 71 is connected with the second connecting member 55, the bottom end of the second connecting rod 71 is connected with the second top plate 73 through the second transmission assembly 72, the plurality of third ejector rods 74 are respectively located below the plurality of test tube placing holes in the standard freezing storage box 3 and are in one-to-one correspondence with the test tube placing holes, and the plurality of fourth ejector rods 75 are respectively located below the part of test tube placing holes in the biological sample freezing storage box 4 and are in one-to-one correspondence with the test tube placing holes.

The second connecting member 55 drives the second connecting rod 71 to move upwards in the vertical upwards moving process, the second connecting rod 71 drives the second top plate 73 to move upwards through the second transmission assembly 72 at the same time, and the second top plate 73 moves along the vertical direction under the cooperation of the third guiding structure 76 and the fourth guiding member 102, so that the plurality of third ejector rods 74 and the plurality of fourth ejector rods 75 eject a plurality of freezing pipes positioned in the standard freezing box 3 and a plurality of freezing pipes positioned in the biological sample freezing box 4 at the same time respectively; the second top plate 73 is located below the first top plate 63, and the third ejector pin 74 and the fourth ejector pin 75 are provided through the first top plate 63.

The top of the second connecting rod 71 penetrates through the top wall of the tube picking barrel 1 and is connected with the second connecting member 55, and the bottom of the second connecting rod 71 is connected with the second top plate 73 through the second transmission assembly 72, so that the second top plate 73 can be driven to move upwards through the second transmission assembly 72 in the vertical upward movement process along with the second connecting member 55, and the second top plate 73 can be vertically moved upwards under the cooperation of the third guide structure 76 and the fourth guide structure 24, so that the plurality of third ejector rods 74 and the plurality of fourth ejector rods 75 can respectively jack up a plurality of freezing tubes located in the standard freezing box 3 and a plurality of freezing tubes located in the biological sample freezing box 4 at the same time.

It should be noted that, the specific structural shapes of the third guide structure 76 and the fourth guide structure 24 are not limited in the present invention, so long as the third guide structure 76 and the fourth guide structure 24 can move vertically in the process of moving the second top plate 73 up and down in cooperation, and in practical application, a person skilled in the art can set the specific structural shapes of the third guide structure 76 and the fourth guide structure 24 according to actual needs. For example, the third guide structure 76 may be provided as a vertically upwardly extending guide post, the fourth guide structure 24 may be provided as a guide hole with the guide post positioned within the guide hole, or alternatively, the fourth guide structure 24 may be provided as a vertically downwardly extending guide post, the third guide structure 76 may be provided as a guide hole with the guide post positioned within the guide hole, and so forth. Such modifications and changes in the specific structural shapes of the third guide structure 76 and the fourth guide structure 24 do not depart from the basic principle of the present invention and are intended to be within the scope of the present invention.

Preferably, the test tube placing holes in the standard freezing and storing box 3 are distributed in a plurality of rows or columns, the first ejector rods 64 respectively correspond to the test tube placing holes in the odd rows or the odd columns in the standard freezing and storing box 3, and the third ejector rods 74 respectively correspond to the test tube placing holes in the even rows or the even columns in the standard freezing and storing box 3; the test tube placing holes in the biological sample freezing box 4 are distributed in a plurality of rows or columns, the second ejector rods 65 respectively correspond to the test tube placing holes in the odd rows or the odd columns in the biological sample freezing box 4, and the fourth ejector rods 75 respectively correspond to the test tube placing holes in the even rows or the even columns in the standard freezing box 3.

The test tube placing holes in the standard freezing box 3 and the test tube placing holes in the biological sample freezing box 4 are distributed in a plurality of rows or columns, so that the first pipe jacking component 6 corresponds to the odd-numbered rows or the odd-numbered columns in the test tube placing holes, and the second pipe jacking component 7 corresponds to the even-numbered rows or the even-numbered columns in the test tube placing holes, thereby enabling the freezing pipes in the odd-numbered rows or the odd-numbered columns and the freezing pipes in the even-numbered rows or the even-numbered columns not to be jacked up simultaneously, reserving enough pipe picking space, facilitating smooth pipe picking, being more convenient to use, being applicable to freezing boxes with different storage densities, and being particularly applicable to the biological sample freezing box 4 for high-density storage.

Preferably, as shown in fig. 3 and 4, the first connecting rod 61 includes a first plastic rod 611 and a first metal rod 612 connected, the top end of the first plastic rod 611 passes through the top wall of the picking barrel 1 to be connected with the first connecting member 54, the bottom end of the first plastic rod 611 is connected with the top end of the first metal rod 612, and the bottom end of the first metal rod 612 is connected with the first top plate 63 through the first transmission assembly 62.

The first connecting rod 61 is arranged into the first plastic rod 611 and the first metal rod 612 from top to bottom, the first plastic rod 611 penetrates through the top wall of the tube picking barrel 1, and when tube picking operation is not performed and the tube picking opening 11 is closed, cold air in the tube picking barrel 1 can be effectively prevented from being diffused out of the tube picking barrel 1 through the first connecting rod 61, so that a stable low-temperature environment is kept in the tube picking barrel 1.

Preferably, as shown in fig. 3 and 4, the second connection rod 71 includes a second plastic rod 711 and a second metal rod 712 connected, the top end of the second plastic rod 711 is connected to the second connection member 55 through the top wall of the picking barrel 1, the bottom end of the second plastic is connected to the top end of the second metal rod 712, and the bottom end of the second metal rod 712 is connected to the second top plate 73 through the second transmission assembly 72.

The second connecting rod 71 is arranged into the second plastic rod 711 and the second metal rod 712 from top to bottom, the second plastic rod 711 penetrates through the top wall of the tube picking barrel 1, and when tube picking operation is not performed and the tube picking opening 11 is closed, cold air in the tube picking barrel 1 can be effectively prevented from diffusing out of the tube picking barrel 1 through the second connecting rod 71, so that a stable low-temperature environment is kept in the tube picking barrel 1.

Preferably, as shown in fig. 2 and 4, the tube picking apparatus of the present invention further includes a third guide and limiting mechanism 10 mounted on the tray 2, the third guide and limiting mechanism 10 being configured to be capable of guiding the first and

second metal bars

612 and 712 during the up and down movement of the first and

second metal bars

612 and 712 so that the first and

second metal bars

612 and 712 move in a vertical direction and to be capable of limiting the stroke of the up and down movement of the first and

second metal bars

612 and 712.

The third guide and limit mechanism 10 can guide the first and

second metal bars

612 and 712 to move in the vertical direction when they move, and can limit the moving stroke of the first and

second metal bars

612 and 712, thereby preventing the push pipe from being excessive.

Preferably, as shown in fig. 2 and 4, the third guiding and limiting mechanism 10 includes a mounting member 101 mounted on the tray 2, a guiding member 102 and a limiting member 103 mounted on the mounting member 101, a first guiding hole 1021 and a second guiding hole 1022 are opened on the guiding member 102 along a vertical direction, a first metal rod 612 penetrates the first guiding hole 1021 and can vertically move along the first guiding hole 1021, a second metal rod 712 penetrates the second guiding hole 1022 and can vertically move along the second guiding hole 1022, a center of the limiting member 103 is pivotally connected with the mounting member 101, both ends of the limiting member 103 are symmetrically provided with a first sliding groove 1031 and a second sliding groove 1032, the first sliding groove 1031 and the second sliding groove 1032 extend along a length direction of the limiting member 103, the first metal rod 612 and the second metal rod 712 are respectively provided with a first sliding member 6121 and a second sliding member 7121, the first sliding member 6121 is located in the first sliding groove 1031 and can vertically move along a length direction of the first sliding groove 1031, and the second sliding member 7121 is located in the second sliding groove 1032 can slide along a length direction of the second sliding groove 1032.

In the process of vertically moving upwards along the first guiding hole 1021, the first sliding member 6121 slides in the first sliding groove 1031, so as to drive the limiting member 103 to rotate, meanwhile, the second metal rod 712 vertically moves downwards along the second guiding hole 1022, and the second sliding member 7121 slides in the second sliding groove 1032, and when the end of the first sliding member 6121 abuts against the end of the first sliding groove 1031 or the end of the second sliding member 7121 abuts against the end of the second sliding groove 1032, the first metal rod 612 is stated to move into position. The first metal rod 612 and the second metal rod 712 move up and down to realize conversion by rotating the limiting member 103, so that the operation is convenient and the limiting control is convenient.

It should be noted that, the specific structures of the first sliding member 6121 and the second sliding member 7121 are not limited in the present invention, as long as the first sliding member 6121 can slide in the first chute 1031, and the second sliding member 7121 can slide in the second chute 1032, and in practical application, a person skilled in the art can set the specific structures of the first sliding member 6121 and the second sliding member 7121 according to practical needs. For example, the first sliding member 6121 and the second sliding member 7121 may be provided as a spool, or alternatively, the first sliding member 6121 and the second sliding member 7121 may be provided as a roller, or the like. Such modifications and changes in the specific structure of the first sliding member 6121 and the second sliding member 7121 do not depart from the basic principle of the present invention, and should be limited to the protection scope of the present invention.

Preferably, as shown in fig. 2 and 3, the first transmission assembly 62 includes a first transmission joint 621, a second transmission joint 622, a first connection arm 623, and a first support arm 624, the top end of the first connection arm 623 is mounted on the bottom wall of the first top plate 63, the top end of the first support arm 624 is mounted on the tray 2, the first end of the first transmission joint 621 is pivotally connected to the bottom end of the first connection rod 61, the second end of the first transmission joint 621 is pivotally connected to the first end of the second transmission joint 622, the second end of the second transmission joint 622 is pivotally connected to the bottom end of the first support arm 624, the second transmission joint 622 is horizontally disposed and the middle position of the second transmission joint 622 is provided with a first connection end 6221, and the bottom end of the first connection arm 623 is pivotally connected to the first connection end 6221.

The first transmission assembly 62 is configured as a first transmission joint 621, a second transmission joint 622, a first connection arm 623 and a first support arm 624, when the first connection rod 61 moves upward with the first connection member 54, the first transmission joint 621 is driven to move upward, so as to drive the second transmission joint 622 to rotate with the second end thereof as an axis, and thus the first connection arm 623 and the first top plate 63 are driven to move vertically upward under the cooperation of the first guide structure 66 and the second guide structure 23, and further, the jacking operation is performed. The whole structure is simple, and the transmission effect is good.

Preferably, as shown in fig. 2 and 3, the second driving assembly 72 includes a third driving joint 721, a fourth driving joint 722, a second connection arm 723 and a second support arm 724, the top end of the second connection arm 723 is mounted on the bottom wall of the second top plate 73, the top end of the second support arm 724 is mounted on the tray 2, the first end of the third driving joint 721 is pivotally connected with the bottom end of the second connection rod 71, the second end of the third driving joint 721 is pivotally connected with the first end of the fourth driving joint 722, the second end of the fourth driving joint 722 is pivotally connected with the bottom end of the second support arm 724, the fourth driving joint 722 is horizontally disposed and the middle position of the fourth driving joint 722 is provided with a second connection end 7221, and the bottom end of the second connection arm 723 is pivotally connected with the second connection end 7221; the bottom end of the first support arm 624 penetrates the second top plate 73 and is located below the second top plate 73.

The second transmission assembly 72 is configured as a third transmission joint 721, a fourth transmission joint 722, a second connecting arm 723 and a second supporting arm 724, when the second connecting rod 71 moves upward along with the second connecting member 55, the third transmission joint 721 is driven to move upward, so as to drive the fourth transmission joint 722 to rotate with the second end thereof as an axis, and thus the second connecting arm 723 and the second top plate 73 are driven to vertically move upward under the cooperation of the third guiding structure 76 and the fourth guiding structure 24, and further the jacking operation is performed. The whole structure is simple, and the transmission effect is good.

Preferably, as shown in fig. 5, two first accommodation cavities 21 are provided, and two standard freezing boxes 3 are provided and respectively located in the two first accommodation cavities 21.

Two first holding chambers 21 are provided to be able to place two standard cryopreservation boxes 3, to be able to improve the holding quantity of the tray 2, in addition, the freezing pipe of jack-up can also be directly placed in this standard cryopreservation box 3 so as to be convenient for transfer in batches, facilitate the use.

Preferably, the stored number of biological sample cryopreservation cassettes 4 is greater than the sum of the stored numbers of two standard cryopreservation cassettes 3.

The storage quantity of the biological sample freezing box 4 is larger than the sum of the storage quantity of the two standard freezing boxes 3, so that the storage quantity of the biological sample freezing box 4 is improved.

Preferably, the area of the top surface of the biological sample cryopreservation cassette 4 is equal to the sum of the areas of the top surfaces of two standard cryopreservation cassettes 3.

Preferably, as shown in fig. 5, the tray 2 is provided with a first elastic positioning member 25, and the first elastic positioning member 25 is capable of fixing the standard freezing box 3 in the first accommodating chamber 21.

The standard freezing box 3 can be fixed in the first accommodating cavity 21 by arranging the first elastic positioning member 25, so that the standard freezing box 3 is prevented from moving in the process of jacking pipes and picking pipes, and smooth pipe picking is ensured.

Preferably, as shown in fig. 5, the tray 2 is provided with a second elastic positioning member 26, and the second elastic positioning member 26 can fix the biological sample freezing box 4 in the second accommodating chamber 22.

The biological sample freezing box 4 can be fixed in the second accommodating cavity 22 by arranging the second elastic positioning member 26, so that the biological sample freezing box 4 is prevented from moving in the process of jacking pipes and picking pipes, and smooth pipe picking is ensured.

It should be noted that, the specific structures of the first elastic positioning member 25 and the second elastic positioning member 26 are not limited in the present invention, so long as the first elastic positioning member 25 can fix the standard cryopreservation cell 3 in the first accommodating cavity 21, and the second elastic positioning member 26 can fix the biological sample cryopreservation cell 4 in the second accommodating cavity 22, and in practical application, a person skilled in the art can set the specific structures of the first elastic positioning member 25 and the second elastic positioning member 26 according to actual needs. For example, the first elastic positioning member 25 and the second elastic positioning member 26 may be provided as spring pieces, or alternatively, the first elastic positioning member 25 and the second elastic positioning member 26 may be provided as a locker, or the like. Such modifications and changes in the specific structure of the first elastic positioning member 25 and the second elastic positioning member 26 do not depart from the basic principle of the present invention, and are intended to be within the scope of the present invention.

Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.

Claims

1. A tube picking device, comprising:

the top wall of the tube picking barrel is provided with a tube picking opening;

the tray is fixedly arranged in the tube picking barrel and positioned below the tube picking opening, and a first accommodating cavity and a second accommodating cavity are formed in the tray;

a standard cryopreservation cassette disposed within the first receiving cavity;

a biological sample cryopreservation cassette placed in the second receiving cavity, the stored number of the biological sample cryopreservation cassettes being greater than the stored number of the standard cryopreservation cassettes;

the driving mechanism is arranged on the outer side of the tube picking barrel;

a first pipe jacking assembly which is arranged in the pipe picking barrel, one end of the first pipe jacking assembly penetrates out of the pipe picking barrel and is connected with the driving mechanism, and

A second pipe jacking assembly which is arranged in the pipe picking barrel, one end of the second pipe jacking assembly penetrates out of the pipe picking barrel and is connected with the driving mechanism,

the driving mechanism can drive the first pipe jacking assembly and the second pipe jacking assembly to move up and down along the vertical direction relative to the pipe picking barrel independently, wherein the first pipe jacking assembly and the second pipe jacking assembly can jack up the partial freezing pipe positioned in the biological sample freezing box and the partial freezing pipe positioned in the standard freezing box simultaneously in the vertical upward moving process.

2. The pipe picking device according to claim 1, wherein the driving mechanism drives the second pipe jacking assembly to vertically move downwards in the process of driving the first pipe jacking assembly to vertically move upwards, and the driving mechanism drives the second pipe jacking assembly to vertically move upwards in the process of driving the first pipe jacking assembly to vertically move downwards.

3. The tube picking apparatus as claimed in claim 2 wherein the drive mechanism comprises a fixed member, a drive member mounted on the fixed member, a gear, a first connecting member, a second connecting member, a first rack and a second rack;

The first rack is vertically arranged on the first connecting member, the second rack is vertically arranged on the second connecting member, the first connecting member is connected with the first jacking pipe assembly, and the second connecting member is connected with the second jacking pipe assembly;

the driving member is connected with the gear, the first rack and the second rack are respectively positioned at the left side and the right side of the gear and meshed with the gear,

the driving member can drive the gear to rotate so as to drive the first rack, the first connecting member, the first jacking pipe assembly, the second rack, the second connecting member and the second jacking pipe assembly to move up and down along the vertical direction;

the driving member can drive the first rack, the first connecting member and the first jacking pipe assembly to vertically move upwards in the process of driving the gear to rotate along a first direction, and simultaneously drive the second rack, the second connecting member and the second jacking pipe assembly to vertically move downwards;

the driving member can drive the second rack, the second connecting member and the second jacking pipe assembly to vertically move upwards in the process of driving the gear to rotate along the second direction, and simultaneously drive the first rack, the first connecting member and the first jacking pipe assembly to vertically move downwards;

The first direction is opposite to the second direction.

4. A tube picking device as claimed in claim 3 further comprising a first guide and limit mechanism disposed between the securing member and the first connecting member to facilitate guiding of the first connecting member during vertical up and down movement of the first connecting member and to limit movement of the first connecting member in a horizontal direction; and/or

The pipe picking device further comprises a second guiding and limiting mechanism, wherein the second guiding and limiting mechanism is arranged between the fixing member and the second connecting member so as to guide the second connecting member and limit the movement of the second connecting member in the horizontal direction in the process that the second connecting member moves up and down along the vertical direction.

5. The tube picking device according to claim 3, wherein the first tube jacking assembly comprises a first connecting rod, a first transmission assembly, a first top plate, a plurality of first ejector rods, a plurality of second ejector rods and a first guide structure, wherein the first ejector rods, the plurality of second ejector rods and the first guide structure are arranged on the first top plate, and the tray is provided with a second guide structure at a position corresponding to the first guide structure;

The first connecting rod is vertically arranged and penetrates through the top wall of the tube picking barrel, the top end of the first connecting rod is connected with the first connecting component, the bottom end of the first connecting rod is connected with the first top plate through the first transmission component,

the first ejector rods are respectively positioned below the test tube placing holes in the standard freezing and storing box and are arranged in one-to-one correspondence with the test tube placing holes, the second ejector rods are respectively positioned below part of the test tube placing holes in the biological sample freezing and storing box and are arranged in one-to-one correspondence with the test tube placing holes,

the first connecting component drives the first connecting rod to move upwards in the vertical upward moving process, the first connecting rod drives the first top plate to move upwards through the first transmission component at the same time, and the first top plate moves along the vertical direction under the cooperation of the first guide structure and the second guide structure, so that a plurality of first ejector rods and a plurality of second ejector rods respectively eject a plurality of freezing storage pipes positioned in the standard freezing storage box and a plurality of freezing storage pipes positioned in the biological sample freezing storage box at the same time.

6. The tube picking device according to claim 5, wherein the second tube jacking assembly comprises a second connecting rod, a second transmission assembly, a second top plate, a plurality of third ejector rods, a plurality of fourth ejector rods and a third guide structure, wherein the third ejector rods, the fourth ejector rods and the third guide structure are arranged on the second top plate, and the tray is provided with the fourth guide structure at a position corresponding to the third guide structure;

The second connecting rod is vertically arranged and penetrates through the top wall of the tube picking barrel, the top end of the second connecting rod is connected with the second connecting member, the bottom end of the second connecting rod is connected with the second top plate through the second transmission assembly,

the third ejector rods are respectively positioned below the test tube placing holes in the standard freezing and storing box and are arranged in one-to-one correspondence with the test tube placing holes, the fourth ejector rods are respectively positioned below part of the test tube placing holes in the biological sample freezing and storing box and are arranged in one-to-one correspondence with the test tube placing holes,

the second connecting member drives the second connecting rod to move upwards in the vertical upwards moving process, the second connecting rod drives the second top plate to move upwards through the second transmission assembly at the same time, and the second top plate moves along the vertical direction under the matching action of the third guide structure and the fourth guide member, so that a plurality of third ejector rods and a plurality of fourth ejector rods respectively eject a plurality of freezing pipes positioned in the standard freezing box and a plurality of freezing pipes positioned in the biological sample freezing box at the same time;

the second top plate is located below the first top plate, and the third ejector rod and the fourth ejector rod penetrate through the first top plate.

7. The tube picking device according to claim 6, wherein the tube placing holes in the standard freezing box are distributed in a plurality of rows or columns, the first ejector rods respectively correspond to the tube placing holes in the odd rows or the odd columns in the standard freezing box, and the third ejector rods respectively correspond to the tube placing holes in the even rows or the even columns in the standard freezing box;

the test tube placing holes in the biological sample freezing box are distributed in a plurality of rows or columns, a plurality of second ejector rods respectively correspond to the test tube placing holes in the odd rows or the odd columns in the biological sample freezing box, and a plurality of fourth ejector rods respectively correspond to the test tube placing holes in the even rows or the even columns in the standard freezing box.

8. The tube picking device as defined by claim 6 wherein said first connecting rod comprises a first plastic rod and a first metal rod connected, the top end of said first plastic rod passing through the top wall of said tube picking barrel and being connected to said first connecting member, the bottom end of said first plastic rod being connected to the top end of said first metal rod, the bottom end of said first metal rod being connected to said first top plate through said first drive assembly; and/or

The second connecting rod comprises a second plastic rod and a second metal rod which are connected, the top end of the second plastic rod penetrates through the top wall of the picking barrel to be connected with the second connecting member, the bottom end of the second plastic rod is connected with the top end of the second metal rod, and the bottom end of the second metal rod is connected with the second top plate through the second transmission assembly.

9. The tube picking device of claim 8, further comprising a third guiding and limiting mechanism mounted on the tray, the third guiding and limiting mechanism being configured to guide the first and second metal bars during upward and downward movement thereof to move the first and second metal bars in a vertical direction and to limit a stroke of upward and downward movement of the first and second metal bars.

10. The tube picking apparatus of claim 6 wherein the first drive assembly comprises a first drive joint, a second drive joint, a first connecting arm and a first support arm, the top end of the first connecting arm being mounted on the bottom wall of the first top plate, the top end of the first support arm being mounted on the tray,

The first end of the first transmission joint is pivotally connected with the bottom end of the first connecting rod, the second end of the first transmission joint is pivotally connected with the first end of the second transmission joint, the second end of the second transmission joint is pivotally connected with the bottom end of the first supporting arm, the second transmission joint is horizontally arranged, a first connecting end is arranged in the middle of the second transmission joint, and the bottom end of the first connecting arm is pivotally connected with the first connecting end;

the second transmission assembly comprises a third transmission joint, a fourth transmission joint, a second connecting arm and a second supporting arm, the top end of the second connecting arm is arranged on the bottom wall of the second top plate, the top end of the second supporting arm is arranged on the tray,

the first end of the third transmission joint is pivotally connected with the bottom end of the second connecting rod, the second end of the third transmission joint is pivotally connected with the first end of the fourth transmission joint, the second end of the fourth transmission joint is pivotally connected with the bottom end of the second supporting arm, the fourth transmission joint is horizontally arranged, a second connecting end is arranged in the middle of the fourth transmission joint, and the bottom end of the second connecting arm is pivotally connected with the second connecting end;

The bottom end of the first supporting arm penetrates through the second top plate and is located below the second top plate.