Biological sample reagent tube selection mechanism

Abstract

The present invention relates to the field of low-temperature storage technology, and provides a biological sample reagent tube selection mechanism, including a storage cabinet with several storage layers, a tray mechanism, including a door opening mechanism for lifting a sealed door, a tray pulling mechanism for pulling the tray out of the storage cabinet, and a box pushing mechanism for pushing the test tube box in the pulled-out tray to a designated position. The present invention is designed with a door opening mechanism, a tray pulling mechanism, and a box pushing mechanism with a very high degree of automation for a low-temperature storage cabinet with an up-and-down sliding opening and closing method. The sealed door is lifted and opened by the door opening mechanism, the tray is pulled out by the tray pulling mechanism, the tray is transported to the designated position by a tray delivery mechanism provided in the tray pulling mechanism, and the test tube box in the tray is pushed out by the box pushing mechanism. The whole process does not require manual participation, has a high level of automation, and the mechanical structure of the door opening mechanism, the tray pulling mechanism, and the box pushing mechanism is reasonably designed, and the efficiency of each action connection is high.

Description

Technical Field

[0001] The invention relates to the technical field of low-temperature storage, and in particular to a biological sample reagent tube selection mechanism. Background Art

[0002] The storage of biological samples, vaccines, etc. requires an ultra-low temperature environment to ensure the stability and storage time of biological samples. At the same time, due to the large variety and quantity of biological samples and vaccines, storage cabinets usually use multi-unit, multi-layer classified storage. In an ultra-low temperature environment, the storage of biological samples requires the use of automated retrieval equipment.

[0003] In addition, in order to ensure the normal operation of automated retrieval equipment and reduce energy consumption in ultra-low temperature storage areas, biological sample storage cabinets need to be well sealed to prevent cold air from leaking out of ultra-low temperature storage areas. Strict sealing conditions place higher demands on the storage and access of biological samples and vaccines.

[0004] Based on this, it is of great significance to develop a biological sample reagent tube selection mechanism with a high level of automation to achieve rapid selection and transportation of samples in multi-unit and multi-layer storage cabinets. Summary of the invention

[0005] The purpose of the present invention is to provide a biological sample reagent tube selection mechanism to solve the problems raised in the above background technology.

[0006] A biological sample reagent tube selection mechanism, comprising:

[0007] A storage cabinet having a plurality of storage layers, each storage layer being equipped with an independent sealing door;

[0008] A tray mechanism is provided with a test tube box and a tray;

[0009] A handle is provided at the bottom of the tray;

[0010] The tray is arranged in a plurality of storage layers of the storage cabinet, and a plurality of test tube boxes are placed in the tray;

[0011] A door opening mechanism for lifting a sealed door;

[0012] A tray pull mechanism for pulling the tray out of the storage cabinet;

[0013] A box pushing mechanism is used to push the test tube box in the pull-out tray to a specified position.

[0014] Further, the door opening mechanism comprises:

[0015] A lifting support and an arm lifting slide rail, an arm lifting motor and a ball screw installed on the lifting support; the output end of the arm lifting motor is connected to the first arm lifting pulley, the end of the ball screw is connected to the second arm lifting pulley, and the first arm lifting pulley and the second arm lifting pulley are connected through a synchronous belt; the ball screw is connected to the arm lifting slider, and the arm lifting motor drives the ball screw to rotate to realize the lifting and lowering of the arm lifting slider;

[0016] An arm lifting connection seat is installed on the arm lifting slide rail, and the arm lifting connection seat is fixedly connected to the arm lifting slider at the same time; a swing arm is installed on the arm lifting connection seat, and a lifting rod for lifting and opening the sealed door is arranged at the front end of the swing arm.

[0017] Furthermore, a swing arm bearing seat is also provided on the arm lifting connection seat, and the middle part of the swing arm is connected to the swing arm bearing seat through a swing arm rotating shaft, so that the swing arm can rotate around the swing arm rotating shaft.

[0018] Furthermore, the swing arm is made of metal material, and an electromagnet is arranged at a position on the arm lifting connection seat corresponding to the rear end of the swing arm, and the rotation of the swing arm is controlled by the electromagnet.

[0019] Furthermore, the door opening mechanism, the plate pulling mechanism, and the box pushing mechanism are installed on a beam-bearing mechanism, and the beam-bearing mechanism includes:

[0020] A low-level frame beam having low-level cross beams and low-level longitudinal beams is provided;

[0021] A pair of portal beams mounted on the lower beams;

[0022] A middle-layer frame beam installed between a pair of portal frame beams, wherein the middle-layer frame beam includes a middle-layer low beam and a middle-layer high beam;

[0023] The high-rise frame beams are installed on the middle-level frame beams, and the high-rise frame beams include a high-rise first frame beam installed on the middle-level low beam and a high-rise second frame beam installed on the middle-level high beam.

[0024] Further, the pull plate mechanism comprises:

[0025] A mounting plate with two ends respectively fixed to a pair of portal frame beams;

[0026] A tray delivery slide rail disposed above the mounting plate;

[0027] A tray-feeding slider installed on the tray-feeding slide rail and capable of sliding along the tray-feeding slide rail;

[0028] A tray carrying frame fixedly connected to the tray feeding slider;

[0029] A tray delivery drive device connected to the tray carrying frame;

[0030] The tray feeding drive device comprises:

[0031] A tray feeding rack fixedly connected to the tray carrying frame;

[0032] A tray delivery connection plate disposed on the side of the mounting plate;

[0033] A tray feeding motor installed on the tray feeding connecting plate;

[0034] A disc feeding gear connected to the disc feeding motor and meshing with the disc feeding rack;

[0035] A linear slide rail disposed below the mounting plate;

[0036] A slidable slide bar disposed within the linear slide rail;

[0037] A hook assembly connected to the slide bar;

[0038] A pull plate power mechanism connected to the pull hook assembly.

[0039] Furthermore, the hook assembly includes a hook plate, a hook is installed on the hook plate, and the hook is connected to the hook motor through gears; the gears include a first hook gear, a second hook gear, and a third hook gear, the first hook gear is connected to the hook motor, the third hook gear is connected to the hook through a connecting shaft, the first gear and the third hook gear are connected through the second hook gear, and the hook can be driven to rotate by the hook motor.

[0040] Furthermore, the pulling plate power mechanism includes a pulling plate motor and two pulling plate pulleys fixed on the lower crossbeam. The pulling plate motor is connected to the pulling plate pulley through a transmission shaft. A pulling plate synchronous belt is installed between the two pulling plate pulleys. The bottom of the hook plate is fixedly connected to the pulling plate synchronous belt. The synchronous belt is driven to rotate by the pulling plate motor, thereby driving the hook plate to slide along the linear slide rail.

[0041] Furthermore, the box pushing mechanism includes a box pushing carrying plate installed on the high-level first frame beam and the high-level second frame beam, a box pushing slide rail is provided on the box pushing carrying plate, and a box pushing support beam that can slide along the box pushing slide rail is installed on the box pushing slide rail; a driving mechanism of the box pushing support beam is also installed on the box pushing carrying plate, and the driving mechanism includes a box pushing second motor and a pair of box pushing pulleys connected by a box pushing synchronous belt, and the box pushing second motor is connected to the box pushing pulley through an output shaft; the box pushing support beam is fixedly connected to the box pushing synchronous belt through a support beam connecting plate, and the box pushing synchronous belt and the box pushing support beam are driven to move by the second box pushing motor.

[0042] Furthermore, a vertically arranged push box slide rail is installed on the push box support beam, a push box rack is slidably connected to the push box slide rail, and a push plate is installed on the push box rack; a lifting drive mechanism for the push plate is also installed on the push box support beam, and the driving mechanism includes a first push box motor and a push box gear connected to the first push box motor, the push box gear is meshed with the push box rack, and the push box rack and the push plate are driven to rise and fall by the first push box motor.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] The present invention is aimed at the low-temperature storage cabinet with an up and down sliding opening and closing method, and designs a door opening mechanism, a tray pulling mechanism, and a box pushing mechanism with a very high degree of automation. The sealed door is lifted and opened by the door opening mechanism, the tray is pulled out by the tray pulling mechanism, the tray delivery mechanism arranged in the tray pulling mechanism transports the tray to a specified position, and the test tube box in the tray is pushed out by the box pushing mechanism. The whole process does not require human intervention and has a high level of automation. The mechanical structures of the door opening mechanism, the tray pulling mechanism, and the box pushing mechanism are reasonably designed, and the efficiency of the connection between each action is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 Select the schematic diagram of the mechanism structure for the storage cabinet and biological sample reagent tube;

[0046] Figure 2 It is a schematic diagram of the storage cabinet and tray mechanism structure;

[0047] Figure 3 A schematic diagram of the first-person perspective structure of a biological sample reagent tube selection mechanism;

[0048] Figure 4 A schematic diagram of the second perspective structure of the biological sample reagent tube selection mechanism;

[0049] Figure 5 A third-view structural diagram of a biological sample reagent tube selection mechanism;

[0050] Figure 6 It is a schematic diagram of the door opening mechanism structure;

[0051] Figure 7 This is a schematic diagram of the structure of the plate pulling mechanism from the first perspective;

[0052] Figure 8 This is a structural schematic diagram of the plate pulling mechanism from the second viewing angle;

[0053] Fig. 9 It is a schematic diagram of the hook plate structure;

[0054] Fig.10 This is a schematic diagram of the structure of the pull mechanism from the third perspective;

[0055] Fig.11 This is a schematic diagram of the structure of the pull mechanism from the fourth perspective;

[0056] Fig.12 It is a schematic diagram of the box pushing mechanism structure.

[0057] In the figure:

[0058] Storage cabinet 1, tray mechanism 2, test tube box 21, handle 22, tray 23, test tube box mounting bottom plate 24, door opening mechanism 3,

[0059] Lifting support 31, arm lifting rail 311, arm lifting motor 32, ball screw 33, arm lifting slider 34, swing arm 35, swing arm shaft 351, swing arm bearing seat 352, lifting rod 353, arm lifting connecting seat 36, arm lifting first pulley 37, arm lifting second pulley 38,

[0060] The pull plate mechanism 4, the hook assembly 41, the hook plate 411, the hook 412, the hook motor 413, the hook first gear 414, the hook second gear 415, the hook third gear 416,

[0061] Mounting plate 42, tray pull power mechanism 43, tray pull motor 431, tray pull pulley 432, tray pull timing belt 433, tray carrier 44, linear slide rail 45, connecting bridge 46, tray delivery drive device 47, tray delivery motor 471, tray delivery gear 472, tray delivery rack 473, tray delivery connecting plate 474, tray delivery slide rail 48, tray delivery slider 481,

[0062] Box pushing mechanism 5, box pushing carrying plate 51, box pushing slide rail 52, box pushing beam 53, box pushing slide rail 531, box pushing rack 532, push plate 533, beam connecting plate 534, box pushing power mechanism 54, box pushing first motor 541, box pushing gear 542, box pushing second motor 55, box pushing synchronous belt 56, box pushing pulley 57,

[0063] Low-level beam 6, low-level cross beam 61, low-level longitudinal beam 62, portal beam 7, middle-level beam 8,

[0064] Middle-level low beam 81, middle-level high beam 82, high-level frame beam 9, high-level first frame beam 91, and high-level second frame beam 92. DETAILED DESCRIPTION

[0065] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] See also Figure 1-12 The present invention provides a biological sample reagent tube selection mechanism, which includes a storage cabinet 1 and a tray mechanism 2. The storage cabinet 1 is provided with a plurality of storage units, each storage unit is provided with a plurality of storage layers from top to bottom, and each storage layer is installed with an independent sealing door; the tray mechanism 2 includes a test tube box 21 and a tray 23; a handle 22 is provided at the bottom of the tray 23; the tray 23 is arranged in a plurality of storage layers of the storage cabinet 1, and a plurality of test tube boxes 21 are placed in the tray 23.

[0067] The biological sample reagent tube selection mechanism of the present invention also includes a door opening mechanism 3 for lifting the sealed door, a tray pulling mechanism 4 for pulling the tray 23 out of the storage cabinet 1, and a box pushing mechanism 5 for pushing the test tube box 21 in the pulled-out tray 23 to a specified position.

[0068] Reference Figure 6 The door opening mechanism 3 includes a lifting support 31, on which an arm lifting slide rail 311, an arm lifting motor 32, and a ball screw 33 are installed. The output end of the arm lifting motor 32 is connected to a first arm lifting pulley 37, and the end of the ball screw 33 is connected to a second arm lifting pulley 38, and the first arm lifting pulley 37 and the second arm lifting pulley 38 are connected by a synchronous belt. The ball screw 33 is connected to an arm lifting slider 34, and the arm lifting slider 34 is lifted and lowered by the arm lifting motor 32 driving the ball screw 33 to rotate.

[0069] An arm lifting connection seat 36 is installed on the arm lifting slide rail 311, and the arm lifting connection seat 36 is fixedly connected to the arm lifting slider 34; a swing arm 35 is installed on the arm lifting connection seat 36, and a lifting rod 353 is provided at the front end of the swing arm 35 for lifting the sealed door to open the door.

[0070] Example 1

[0071] In this embodiment, a special structure is designed to realize the swing arm to rotate and swing in a small range. The arm lifting connection seat 36 is also provided with a swing arm bearing seat 352, and the middle part of the swing arm 35 is connected to the swing arm bearing seat 352 through the swing arm rotating shaft 351, so that the swing arm 35 can rotate around the swing arm rotating shaft 351.

[0072] The swing arm 35 is made of metal material, and an electromagnet 39 is arranged on the arm lifting connecting seat 36 at a position corresponding to the rear end of the swing arm 35. When the electromagnet 39 is energized, it generates magnetism to attract the swing arm 35 to rotate around the swing arm rotating shaft 351; a spring mechanism is arranged at the front end of the swing arm 35. After the electromagnet 39 is disconnected, the swing arm 35 is reset under the action of the spring mechanism.

[0073] Example 2

[0074] In this embodiment, the present invention designs a beam that carries a door opening mechanism 3, a plate pulling mechanism 4, and a box pushing mechanism 5. The door opening mechanism 3, the plate pulling mechanism 4, and the box pushing mechanism 5 are installed on the beam mechanism. The beam mechanism includes a lower beam 6. The lower beam 6 includes a lower cross beam 61 and a lower longitudinal beam 62. The bottom of the door opening mechanism 3 is connected to the lower cross beam 61.

[0075] A pair of gantry beams 7 for supporting are installed at the front and rear of the lower beam 6 , and a middle beam 8 is installed between the pair of gantry beams 7 . The middle beam 8 includes a middle low beam 81 and a middle high beam 82 .

[0076] A high-rise frame beam 9 is installed above the middle-level frame beam 8 , and the high-rise frame beam 9 includes a high-rise first frame beam 91 installed on the middle-level low beam 81 and a high-rise second frame beam 92 installed on the middle-level high beam 82 .

[0077] Example 3

[0078] This example involves a tray pulling mechanism 4, which includes a mounting plate 42 whose two ends are respectively fixed to a pair of gantry beams 7. The mounting plates 42 are provided with two left and right mounting plates. A tray delivery slide rail 48 is provided above the mounting plate 42. A tray delivery slider 481 that can slide along the tray delivery slide rail 48 is installed on the tray delivery slide rail 48; a tray carrying frame 44 is fixedly connected to the tray delivery slider 481; two tray delivery slide rails 48 and tray carrying frames 44 are provided, and the spacing width is set according to the width of the tray 23.

[0079] The tray carrier 44 can drive the tray 23 to slide. The power comes from the tray delivery drive device 47; the tray delivery drive device 47 includes a tray delivery rack 473 fixedly connected to the tray carrier 44; a tray delivery connecting plate 474 is arranged on the side of the mounting plate 42; a tray delivery motor 471 is installed on the tray delivery connecting plate 474; the tray delivery motor 471 is connected to a tray delivery gear 472 meshed with the tray delivery rack 473; the tray delivery motor 471 is transmitted to the tray delivery rack 473 through the tray delivery gear 472, and the tray delivery rack 473 drives the tray carrier 44 to slide, and the tray carrier 44 carries the tray 23, and the position of the tray 23 can be adjusted in the above manner.

[0080] The above-mentioned action is performed after the tray 23 is pulled out. The tray 23 is pulled out from the storage cabinet 1 by the structure involved in the tray pulling mechanism 4 described below.

[0081] A linear slide rail 45 is arranged below the mounting plate 42, a slidable slide bar is arranged inside the linear slide rail 45, and the upper bottom of the slide bar is connected to the hook assembly 41. The hook assembly 41 relies on the pull plate power mechanism 43 to provide power for the hook action.

[0082] The pulling plate power mechanism 43 includes a pulling plate motor 431 and two pulling plate pulleys 432 fixed on the lower crossbeam 61. The pulling plate motor 431 is connected to the pulling plate pulley 432 through a transmission shaft. A pulling plate synchronous belt 433 is installed between the two pulling plate pulleys 432. The bottom of the pulling hook plate 411 is fixedly connected to the pulling plate synchronous belt 433. The synchronous belt 433 is driven to rotate by the pulling plate motor 431, thereby driving the pulling hook plate 411 to slide along the linear slide rail 45.

[0083] The hook assembly 41 includes a hook plate 411 , on which a hook 412 is mounted. The hook 412 is connected to a hook motor 413 via a gear.

[0084] In a preferred embodiment, the gears include a first hook gear 414, a second hook gear 415, and a third hook gear 416. The first hook gear 414 is connected to the hook motor 413, and the third hook gear 416 is connected to the hook 412 via a connecting shaft. The first gear 414 and the third hook gear 416 are connected via the second hook gear 415, and the hook motor 413 can drive the hook 412 to rotate.

[0085] Example 4

[0086] The present embodiment relates to a box pushing mechanism 5, which includes a box pushing carrying plate 51 installed on a high-level first frame beam 91 and a high-level second frame beam 92, a box pushing carrying plate 51 is provided with a box pushing slide rail 52, and a box pushing support beam 53 which can slide along the box pushing slide rail 52 is installed on the box pushing slide rail 52; a driving mechanism of the box pushing support beam 53 is also installed on the box pushing carrying plate 51, and the driving mechanism includes a box pushing second motor 55 and a pair of box pushing pulleys 57 connected by a box pushing synchronous belt 56, and the second box pushing motor 55 is connected to the box pushing pulley 57 through an output shaft; the box pushing support beam 53 is fixedly connected to the box pushing synchronous belt 56 through a support beam connecting plate 534, and the box pushing synchronous belt 56 and the box pushing support beam 53 are driven to move by the second box pushing motor 55.

[0087] A vertically arranged push box slide rail 531 is installed on the push box support beam 53, and a push box rack 532 is slidably connected to the push box slide rail 531, and a push plate 533 is installed on the push box rack 532; a lifting drive mechanism for the push plate 533 is also installed on the push box support beam 53, and the driving mechanism includes a first push box motor 541 and a push box gear 542 connected to the first push box motor 541, and the push box gear 542 is meshed with the push box rack 532, and the push box rack 532 and the push plate 533 are driven to rise and fall by the first push box motor 541.

[0088] The door opening process of the present invention is as follows: the arm lifting motor 32 drives the ball screw 33 to rotate to realize the lifting of the arm lifting slider 34 and the swing arm 35 to the specified sealing door height. The electromagnet 39 is energized to drive the swing arm 35 to rotate around the swing arm shaft 351, and the lifting rod 353 extends to the sealing door to lift the seal upward by a stroke height, and the sealing door opens.

[0089] The process of pulling and delivering the tray is as follows: after the sealing door is opened, the tray pulling motor 431 drives the hook tray 411 to slide along the linear slide rail 45, slides the hook 412 of the hook tray 411 into the storage layer with the sealing door opened, and the hook 412 of the hook tray 411 hooks the handle 22 at the bottom of the tray 23, and pulls the tray 23 out to the tray loading rack 44. The hook motor 413 drives the hook 412 to rotate, so that the hook 412 is separated from the handle 22.

[0090] The tray carrying frame 44 and the tray 23 are driven to slide by the tray feeding motor 471, and the tray 23 is adjusted to a specified position, and the box pushing process is ready to start the box pushing mechanism to push the test tube box 21 carried on the tray 23 to the specified position.

[0091] The box pushing process is as follows: the first box pushing motor 541 is started to drive the box pushing rack 532 and the push plate 533 to rise and fall to the height of the test tube box 21. The box pushing second motor 55 drives the box pushing synchronous belt 56 and the box pushing beam 53 to move, and the push plate 533 on the box pushing beam 53 pushes the test tube box 21 to move. A test tube box carrying bottom plate 24 is provided at a corresponding position on the middle-level low beam 81, and the push plate 533 pushes the test tube box 21 to move on the test tube box carrying bottom plate 24, waiting to enter the next step.

[0092] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A biological sample reagent tube selection mechanism, characterized in that: It includes: A storage cabinet (1) having a plurality of storage layers, each storage layer being provided with an independent sealing door; A tray mechanism (2) provided with a test tube box (21) and a tray (23); A handle (22) is provided at the bottom of the tray (23); The tray (23) is arranged in a plurality of storage layers of the storage cabinet (1), and a plurality of test tube boxes (21) are placed in the tray (23); A door opening mechanism (3) for lifting the sealed door; A tray pulling mechanism (4) for pulling the tray (23) out of the storage cabinet (1); A box pushing mechanism (5) for pushing the test tube box (21) in the pull-out tray (23) to a designated position; The door opening mechanism (3) comprises: A lifting support (31) and an arm lifting slide rail (311), an arm lifting motor (32), and a ball screw (33) installed on the lifting support (31); the output end of the arm lifting motor (32) is connected to a first arm lifting pulley (37), the end of the ball screw (33) is connected to a second arm lifting pulley (38), and the first arm lifting pulley (37) and the second arm lifting pulley (38) are connected via a synchronous belt; the ball screw (33) is connected to an arm lifting slider (34), and the arm lifting motor (32) drives the ball screw (33) to rotate to realize the lifting and lowering of the arm lifting slider (34); An arm lifting connection seat (36) is installed on the arm lifting slide rail (311), and the arm lifting connection seat (36) is fixedly connected to the arm lifting slider (34); a swing arm (35) is installed on the arm lifting connection seat (36), and a lifting rod (353) for lifting and opening the sealed door is arranged at the front end of the swing arm (35); The arm lifting connection seat (36) is also provided with a swing arm bearing seat (352), and the middle part of the swing arm (35) is connected to the swing arm bearing seat (352) through a swing arm rotating shaft (351), so that the swing arm (35) can rotate around the swing arm rotating shaft (351); The door opening mechanism (3), the plate pulling mechanism (4), and the box pushing mechanism (5) are installed on the beam mounting mechanism, and the beam mounting mechanism comprises: A low-level frame beam (6) is provided with a low-level cross beam (61) and a low-level longitudinal beam (62); A pair of portal beams (7) mounted on the lower beam (6); The pull plate mechanism (4) comprises: A mounting plate (42) with two ends respectively fixed to a pair of portal frame beams (7); A tray delivery slide rail (48) disposed above the mounting plate (42); A tray delivery slider (481) mounted on the tray delivery slide rail (48) and capable of sliding along the tray delivery slide rail (48); A tray carrier (44) fixedly connected to the tray delivery slider (481); A tray delivery drive device (47) connected to the tray carrying frame (44); The tray feeding drive device (47) comprises: A tray delivery rack (473) fixedly connected to the tray carrying frame (44); A tray delivery connection plate (474) disposed on the side of the mounting plate (42); A tray-feeding motor (471) mounted on a tray-feeding connecting plate (474); A disk-feeding gear (472) connected to the disk-feeding motor (471) and meshing with the disk-feeding rack (473); A linear slide rail (45) disposed below the mounting plate (42); A slidable slide bar disposed in the linear slide rail (45); A hook assembly (41) connected to the slide bar; A pull plate power mechanism (43) connected to the pull hook assembly (41); in: The hook assembly (41) comprises a hook plate (411), a hook (412) is mounted on the hook plate (411), and the hook (412) is connected to a hook motor (413) via a gear; The pull plate power mechanism (43) comprises a pull plate motor (431) and two pull plate pulleys (432) fixed on the lower crossbeam (61); the pull plate motor (431) is connected to the pull plate pulley (432) via a transmission shaft; a pull plate synchronous belt (433) is installed between the two pull plate pulleys (432); the bottom of the hook plate (411) is fixedly connected to the pull plate synchronous belt (433); the pull plate motor (431) drives the synchronous belt (433) to rotate, thereby driving the hook plate (411) to slide along the linear slide rail (45); The hook (412) of the hook plate (411) is slid into the storage layer with the sealed door opened, and the hook (412) of the hook plate (411) hooks the handle (22) at the bottom of the tray (23), and the tray (23) is pulled out onto the tray carrying frame (44).

2. The biological sample reagent tube selection mechanism according to claim 1, characterized in that: The swing arm (35) is made of metal material, and an electromagnet (39) is arranged on the arm lifting connection seat (36) at a position corresponding to the rear end of the swing arm (35), and the swing arm (35) is controlled to rotate by the electromagnet (39).

3. The biological sample reagent tube selection mechanism according to claim 1, characterized in that: The beam erecting mechanism further comprises: A middle-layer frame beam (8) installed between a pair of portal frame beams (7), wherein the middle-layer frame beam (8) comprises a middle-layer low beam (81) and a middle-layer high beam (82); A high-rise frame beam (9) is installed on a middle-level frame beam (8), wherein the high-rise frame beam (9) comprises a high-rise first frame beam (91) installed on a middle-level low beam (81) and a high-rise second frame beam (92) installed on a middle-level high beam (82).

4. The biological sample reagent tube selection mechanism according to claim 1, characterized in that: The hook (412) is connected to the hook motor (413) via gears, wherein the gears include a first hook gear (414), a second hook gear (415), and a third hook gear (416). The first hook gear (414) is connected to the hook motor (413), and the third hook gear (416) is connected to the hook (412) via a connecting shaft. The first gear (414) and the third hook gear (416) are connected via the second hook gear (415), and the hook motor (413) can drive the hook (412) to rotate.

5. The biological sample reagent tube selection mechanism according to claim 1, characterized in that: The box pushing mechanism (5) comprises a box pushing carrying plate (51) mounted on a first high-rise frame beam (91) and a second high-rise frame beam (92); a box pushing slide rail (52) is arranged on the box pushing carrying plate (51); a box pushing support beam (53) which can slide along the box pushing slide rail (52) is mounted on the box pushing slide rail (52); A driving mechanism of the box pusher beam (53) is also mounted on the box pusher carrying plate (51), and the driving mechanism comprises a box pusher second motor (55), and a pair of box pusher pulleys (57) connected by a box pusher synchronous belt (56), and the box pusher second motor (55) is connected to the box pusher pulley (57) via an output shaft; The box-pushing beam (53) is fixedly connected to the box-pushing synchronous belt (56) through the beam connecting plate (534), and the box-pushing second motor (55) drives the box-pushing synchronous belt (56) and the box-pushing beam (53) to move.

6. The biological sample reagent tube selection mechanism according to claim 5, characterized in that: A box-pushing slide rail (531) is vertically mounted on the box-pushing support beam (53), a box-pushing rack (532) is slidably connected to the box-pushing slide rail (531), and a push plate (533) is mounted on the box-pushing rack (532); A lifting drive mechanism for the push plate (533) is also installed on the push box support beam (53), and the drive mechanism includes a first push box motor (541) and a push box gear (542) connected to the first push box motor (541). The push box gear (542) is meshed with the push box rack (532), and the push box rack (532) and the push plate (533) are driven to rise and fall by the first push box motor (541).

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