Floor rail cryopreservation box lofting robot

Abstract

The invention discloses a ground rail cryopreservation box lofting robot which comprises a plurality of refrigerated containers sequentially arranged on the two sides of a rail in an aligned mode and further comprises a lofting unit which comprises a bearing and transferring assembly used for bearing the multiple cryopreservation boxes at the initial end of the rail and transferring the multiple cryopreservation boxes to one sides of the refrigerated containers. The driving assembly is arranged on the bearing and transferring assembly and used for pushing out the cryopreservation boxes borne in the bearing and transferring assembly; and a sample receiving unit. The driving assembly drives the bearing and transferring assembly filled with cryopreservation box pieces to move to the opening end of the corresponding refrigerating box along the track, the cryopreservation box pieces on the bearing and transferring assembly are pushed to the sample receiving unit, and the sample receiving unit receives the cryopreservation box pieces and then moves the cryopreservation box pieces into the refrigerating box for stacking work. In the whole carrying process, the cryopreservation box pieces do not need to be put into the refrigeration box one by one through the refrigeration box which shuttles back and forth manually, the carrying efficiency is high, and the cryopreservation box pieces containing samples are prevented from being exposed outside for a long time and going bad.

Description

Technical Field

[0001] This invention relates to the field of cryopreservation technology, specifically to a ground-rail cryopreservation box placement robot. Background Technology

[0002] In biobanks, pharmaceutical research institutions, and other settings, a large number of automated single-unit cold storage boxes are typically used to store various samples. These cold storage boxes are often arranged horizontally to improve space utilization. Currently, when placing cryopreservation boxes into these refrigerated boxes, it is necessary to manually shuttle back and forth between each refrigerated box to place the cryopreservation boxes into the refrigerated boxes one by one. This is inefficient and prone to errors. In addition, since the batch of cryopreservation boxes is large, if individual cryopreservation boxes are placed into the refrigerated boxes one by one, the samples in the cryopreservation boxes will be left at room temperature at outdoor temperature for a longer period of time, which may cause the samples in the cryopreservation boxes to deteriorate. Therefore, there is a need for an automated single-unit refrigerated container that can adapt to multiple horizontally arranged units, and an efficient, accurate, and low-cost automated layout robot to solve the above problems.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0004] The purpose of this invention is to provide a ground-rail cryopreservation box placement robot to solve the problems mentioned in the background art, which require manual placement of cryopreservation boxes one by one, resulting in low placement efficiency, long placement time, and easy deterioration of samples in the cryopreservation boxes due to prolonged exposure to room temperature.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A ground-rail cryogenic container placement robot includes multiple refrigerated containers arranged in a sequentially aligned manner on both sides of a track, and further includes: The layout unit includes a carrying and transfer assembly for receiving and transferring multiple cryopreservation boxes at the initial end of the track to one side of the refrigerator box, and a drive assembly provided in the carrying and transfer assembly for pushing out the cryopreservation boxes received in the carrying and transfer assembly. The sample receiving unit, located at the opening end of the refrigerator, is used to receive the frozen storage box after the transport component is pushed out and send it into the refrigerator for storage.

[0006] Furthermore, the driving component includes: A sliding support is slidably connected to the upper end of the track, and a lead screw for moving the sliding support is installed inside the track; A fixed block is fixedly connected to the upper end of the sliding support, and a drive motor is installed inside the fixed block; A graded ejection mechanism is located at one end of the fixed block and is used to drive the carrier transfer assembly to eject the cryopreservation box.

[0007] Furthermore, the carrier-transfer assembly includes a transfer mechanism, the transfer mechanism comprising: An extension rod is fixedly connected to both ends of the fixed block; The transfer frame is fixedly connected to one end of the extension rod relative to the fixed block; The transfer troughs are arranged at equal intervals from top to bottom inside the transfer frame, and are used to transfer the cryopreservation boxes into the sample receiving unit. The transfer frame is equipped with a cold source to provide a low-temperature environment for the cryopreservation boxes in the transfer troughs. A limiting plate is fixedly connected to the bottom of the transfer trough.

[0008] Furthermore, the carrier-transfer assembly also includes a carrier mechanism, which includes: The placement rack is slidably inserted into the transfer groove and corresponds one-to-one with the transfer groove. One side of the placement rack is provided with an opening groove to provide operating space for the robotic arm to lower the frozen storage boxes onto the placement rack. A side baffle is fixedly connected to one end of the placement rack; A push shaft is slidably inserted into the side baffle, and a top plate for pushing the cryopreservation box is fixedly connected to one end of the push shaft and located inside the placement rack. A push plate is fixedly connected to one end of the plurality of push shafts opposite the top plate; The first push rod is fixedly connected to one side of the push plate. The middle part of the first push rod is provided with a U-shaped section. The middle part of the U-shaped section is located outside the graded ejection mechanism. The U-shaped section is provided with a first threaded hole inside.

[0009] Furthermore, a connecting rod is fixedly connected to one side of each of the multiple placement racks, and the connecting rod has a second threaded hole inside; One end of the connecting rod relative to the placement frame is connected to a second push rod, which is located outside the grading ejection mechanism.

[0010] Furthermore, the graded ejection mechanism includes a drive shaft; The drive shaft is provided with a first limiting ring for limiting the end of the second push rod, a first free-spinning groove, a second threaded segment threaded to the second threaded hole, a second limiting ring for limiting the initial end of the second push rod, a first threaded segment threaded to the first threaded hole, a first free-spinning groove, and a third limiting ring for limiting the initial end of the U-shaped segment.

[0011] Furthermore, the sum of the lengths of the first idling groove and the second threaded section is equal to the length of the second idling groove; The length of the second threaded section is equal to the distance between the placement bracket and the limiting plate; The length of the first threaded section is equal to the length of the push shaft.

[0012] Furthermore, the sample receiving unit includes: The mounting base is fixedly connected to the inside of the refrigerator. A drive rack is rotatably connected to the upper end of the mounting base, and a motor is provided at the upper end of the drive rack inside the refrigerator. A telescopic plate is provided between the drive rack and the inner wall of the refrigerator, and a rack area that meshes with the drive rack is provided on one side of the telescopic plate; A guide frame is provided on the outside of the telescopic plate to guide the movement of the telescopic plate. One side of the guide frame is fixedly connected to the inner wall of the refrigerator. A vertical plate is fixedly connected to one side of the telescopic plate and near the opening of the refrigerator. A support frame for supporting the frozen storage box is fixedly connected to the inner side of the vertical plate. The support frame corresponds one-to-one with the transfer groove. A sealing door, fixedly connected to one end of the telescopic plate, is used to seal the refrigerator.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention uses a drive component to move a transport component filled with cryopreservation boxes along a track to the opening of the corresponding refrigerated box. The transport component then pushes the cryopreservation boxes onto a sample receiving unit. The sample receiving unit receives the cryopreservation boxes and moves them into the refrigerated box for stacking. The entire handling process eliminates the need for manual back-and-forth movement of the refrigerated box to place the cryopreservation boxes into the refrigerated box one by one. This method is highly efficient and avoids prolonged exposure of the cryopreservation boxes containing samples, which could lead to spoilage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a diagram showing the compatibility between the sample receiving unit and the refrigerator of the present invention; Figure 3 This is a schematic diagram of the lofting unit structure of the present invention; Figure 4 This is a schematic diagram of the structure of the load-bearing and transfer component of the present invention; Figure 5 This is a diagram showing the fit between the second push rod and the first push rod of the present invention. Figure 6 This is a schematic diagram of the staged ejection mechanism of the present invention; Figure 7 This is a schematic diagram of the cryopreservation box component of the present invention being inserted into the support frame; Figure 8 For the present invention in Figure 7 Enlarged view of point A in the middle; Figure 9 This is a diagram showing the fit between the push shaft and the placement frame of the present invention.

[0015] Reference numerals: 100, track; 101, refrigerator; 102, frozen storage box; 1, placement unit; 11, drive assembly; 111, sliding support; 112, fixing block; 113, grading ejection mechanism; 1130, drive shaft; 1131, first threaded section; 1132, second threaded section; 1133, first idle groove; 1134, first limiting ring; 1135, second limiting ring; 1136, second idle groove; 1137, third limiting ring; 12, load-bearing transfer assembly; 121, transfer mechanism; 1211, extension rod; 1212, transfer frame; 1213, transfer groove. ; 1214, Limiting plate; 122, Bearing mechanism; 1221, Placement rack; 12211, Opening slot; 1222, Guide rod; 1223, Side baffle; 1224, Push shaft; 12241, Top plate; 1225, Push plate; 1226, First push rod; 12261, U-shaped section; 12262, First threaded hole; 1227, Connecting rod; 12271, Second push rod; 12272, Second threaded hole; 2, Sample receiving unit; 21, Telescopic plate; 22, Sealing door; 23, Vertical plate; 24, Bearing frame; 25, Rack area; 26, Guide frame; 27, Drive rack; 28, Mounting base. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figure 1-9 The present invention provides a technical solution: A ground-rail cryogenic box placement robot includes multiple refrigerated boxes (101) arranged in alignment on both sides of a track (100), and further includes: The layout unit (1) includes a carrying and transporting assembly (12) for receiving and transporting multiple cryopreservation boxes at the initial end of the track (100) to one side of the refrigerator (101), and a drive assembly (11) provided in the carrying and transporting assembly (12) for pushing out the cryopreservation boxes received in the carrying and transporting assembly (12). The sample receiving unit (2) is located at the opening end of the refrigerator (101) and is used to receive the frozen box after the transport component (12) is pushed out and send it into the refrigerator (101) for storage.

[0018] It should be noted that when a large number of cryopreservation boxes 102 need to be transported from the conveyor line to the refrigerator box 101 for storage, a robotic arm is used to pick up the cryopreservation boxes 102 from the conveyor line and place them in the corresponding slots on the carrier transfer component (12). Then, the drive component 11 drives the carrier transfer component 12, which is filled with cryopreservation boxes 102, to move along the track 100 to the opening end of the corresponding refrigerator box 101 and pushes the cryopreservation boxes 102 on the carrier transfer component 12 onto the sample receiving unit 2. The sample receiving unit 2 receives the cryopreservation boxes 102 and moves them into the refrigerator box 101 for stacking. The entire handling process does not require manual back-and-forth movement of the refrigerator box 101 to put the cryopreservation boxes 102 into the refrigerator box 101 one by one. The handling efficiency is high and the cryopreservation boxes 102 containing samples are not exposed to the outside for a long time, which may cause deterioration.

[0019] As an improvement, such as Figure 1 , Figure 3 As shown, the driving component (11) includes: A sliding support (111) is slidably connected to the upper end of the track (100), and a lead screw for moving the sliding support (111) is installed in the track (100). A fixed block (112) is fixedly connected to the upper end of the sliding support (111), and a drive motor is installed inside the fixed block (112); A graded ejection mechanism (113) is located at one end of the fixed block (112) and is used to drive the carrier transfer assembly (12) to eject the cryopreservation box.

[0020] Furthermore, such as Figure 4-5 As shown, the carrier transfer assembly (12) includes a transfer mechanism (121), which includes: An extension rod (1211) is fixedly connected to both ends of the fixing block (112); The transfer frame (1212) is fixedly connected to one end of the extension rod (1211) relative to the fixed block (112); The transfer trough (1213) is provided in multiple equidistant spaces from top to bottom inside the transfer frame (1212) for transferring the cryopreservation box to the sample receiving unit (2). The transfer frame (1212) is provided with a cold source to provide a low temperature environment for the cryopreservation box in the transfer trough (1213). The limiting plate (1214) is fixedly connected to the bottom of the transfer groove (1213).

[0021] Furthermore, such as Figure 4-5 As shown, the carrier transfer assembly (12) further includes a carrier mechanism (122), which includes: The placement rack (1221) is slidably inserted into the transfer groove (1213) and corresponds one-to-one with the transfer groove (1213). The placement rack (1221) has an opening groove (12211) on one side to provide operating space for the robotic arm to place the cryopreservation box (102) onto the placement rack (1221). A guide rod 1222 is fixedly connected to the upper front of the placement rack 1221. The upper end of the guide rod 1222 is slidably connected to the upper end of the transfer groove 1213, and is used to guide the placement rack 1221 to move along the inside of the transfer groove 1213.

[0022] A side baffle (1223) is fixedly connected to one end of the placement rack (1221); A push shaft (1224) is slidably inserted into the side baffle (1223). One end of the push shaft (1224) and the inner side of the placement rack (1221) are fixedly connected to a top plate (12241) for pushing the cryopreservation box. A push plate (1225) is fixedly connected to one end of the plurality of push shafts (1224) opposite to the top plate (12241); The first push rod (1226) is fixedly connected to one side of the push plate (1225). The first push rod (1226) has a U-shaped section (12261) in the middle. The middle part of the U-shaped section (12261) is located outside the graded ejection mechanism (113). The U-shaped section (12261) has a first threaded hole (12262) inside.

[0023] Among them, such as Figure 5 As shown, a connecting rod (1227) is fixedly connected to one side of each of the multiple placement racks (1221), and the connecting rod (1227) has a second threaded hole (12272) inside. The connecting rod (1227) is connected to a second push rod (12271) at one end relative to the placement frame (1221), and the second push rod (12271) is located outside the graded ejection mechanism (113).

[0024] In addition, such as Figure 4-6 As shown, the staged ejection mechanism (113) includes a drive shaft (1130); The drive shaft (1130) is provided with a first limiting ring (1134) for limiting the end of the second push rod (12271), a first idle groove (1133), a second threaded segment (1132) threadedly connected to the second threaded hole (12272), a second limiting ring (1135) for limiting the initial end of the second push rod (12271), a first threaded segment (1131) threadedly connected to the first threaded hole (12262), a first idle groove (1133), and a third limiting ring (1137) for limiting the initial end of the U-shaped segment (12261).

[0025] As an improvement, such as Figure 6 As shown, the sum of the lengths of the first idle groove (1133) and the second threaded section (1132) is equal to the length of the second idle groove (1136); The length of the second threaded section (1132) is equal to the distance between the placement bracket (1221) and the limiting plate (1214); The length of the first threaded section (1131) is equal to the length of the push shaft (1224).

[0026] As an improvement, such as Figure 2 , Figure 7-8 As shown, the sample receiving unit (2) includes: Mounting base (28) is fixedly connected to the inside of the refrigerator (101); A drive rack (27) is rotatably connected to the upper end of the mounting base (28), and a motor is provided at the upper end of the drive rack (27) and inside the refrigerator (101); A telescopic plate (21) is provided between the drive rack (27) and the inner wall of the refrigerator (101), and a rack area (25) that meshes with the drive rack (27) is provided on one side of the telescopic plate (21). A guide frame (26) is provided on the outside of the telescopic plate (21) to guide the movement of the telescopic plate (21). One side of the guide frame (26) is fixedly connected to the inner wall of the refrigerator (101). A vertical plate (23) is fixedly connected to one side of the telescopic plate (21) and near the opening of the refrigerator box (101). A support frame (24) for supporting the frozen box is fixedly connected to the inner side of the vertical plate (23). The support frame (24) corresponds one-to-one with the transfer groove (1213). A sealing door (22) is fixedly connected to one end of the telescopic plate (21) for sealing the refrigerator (101).

[0027] It should be added that, such as Figure 1As shown, the initial end of the track 100 in this invention is provided with a conveyor line for transporting the frozen storage box 102. One end of the conveyor line is equipped with a robotic arm for transporting the frozen storage box 102 from the conveyor line to the placement rack 1221. In addition, the refrigerator 101 in this invention is divided into two parts: -20℃ and -80℃. The sample receiving unit 2 is set at the inlet end of -20℃. After the sample receiving unit 2 connects the frozen storage box 102 to the -20℃ area for cooling transition, the robotic arm in the -20℃ area removes the frozen storage box 102 from the sample receiving unit 2 and transfers it to the frozen storage rack in the -80℃ area for storage. When it is necessary to remove the frozen storage box 102 from the frozen storage rack in the -80℃ area, the robotic arm in the refrigerator 101 sends the frozen storage box 102 out from the discharge door corresponding to -80℃. The discharge door of -80℃ is set at the end of the refrigerator 101 opposite to the inlet door of -20℃.

[0028] It should be noted that: in the specific implementation process of this invention, such as Figure 3-6 As shown, when a large number of cryopreservation boxes 102 need to be placed into the refrigerator 101, the robotic arm on the conveyor line picks up the cryopreservation boxes 102 from the conveyor line and places them sequentially on the placement rack 1221. Then, the drive motor in the control block 112 rotates forward, and the drive motor drives the drive shaft 1130 to rotate. The drive shaft 1130 drives the second push rod 12271 to move towards the first idle slot 1133 through the second threaded section (1132) and the second threaded hole 12272. The second push rod 12271 drives the placement rack 1221 containing the cryopreservation boxes 102 to move into the transfer slot 1213 through the connecting rod 1227. The cold source in the transfer slot 1213 provides a low temperature environment for the samples in the cryopreservation boxes 102, so as to prevent the samples in the cryopreservation boxes 102 from deteriorating during the transfer process. like Figure 5-6 As shown, during the movement of the placement frame 1221 driven by the connecting rod 1227, the placement frame 1221 drives the push shaft 1224 to move through the side baffle 1223 under the action of the top plate 12241. The push shaft 1224 drives the U-shaped section 12261 to move from the second idle groove 1136 to the outside of the first threaded section 1131 through the push plate 1225 under the action of the first push rod 1226. Meanwhile, the second threaded hole 12272 moves to the outside of the first idle groove 1133. like Figure 5-9As shown, subsequently, the lead screw in the track 100 drives the sliding support 111 to move along the track 100. The sliding support 111 drives the extension rod 1211 to move through the fixed block 112. The extension rod 1211 drives the transfer frame 1212 to move to the opening of the support frame 24, so that the transfer groove 1213 corresponds to the support frame 24. At this time, the drive motor in the fixed block 112 is controlled to rotate forward again. The drive motor drives the first threaded section 1131 to rotate through the drive shaft 1130. During this process, the second push rod 12271 stops moving in the first idle groove 1133. The first threaded section 1131, under the action of the threaded tangential force between itself and the first threaded hole 12262, drives the first push rod 1226 forward. The first push rod 1226 drives the push shaft 1224 to move along the side baffle 1223 through the push plate 1225. The push shaft 1224 pushes the cryopreservation box 102 on the placement rack 1221 into the upper end of the support rack 24 through the top plate 12241, completing the placement of the cryopreservation box 102. The whole process does not require manual placement of the cryopreservation boxes one by one, which has high placement efficiency and greatly reduces the placement time. Subsequently, the drive motor inside the control block 112 reverses and drives the sliding support 111 in the opposite direction through the lead screw inside the track 100, so that the placement rack 1221 is reset and the next set of cryopreservation boxes 102 can be picked up and placed. like Figure 2 , Figure 7 As shown, after the support frame 24 receives the frozen storage box 102, it starts the motor on the drive rack 27. The motor, through the drive rack 27 and the rack area 25, brings the telescopic plate 21 into the refrigerator box 101. The telescopic plate 21 drives the vertical plate 23 into the refrigerator box 101, enabling the next stacking operation. After stacking is completed, the telescopic plate 21 extends out of the refrigerator box 101 again to receive and place the next set of frozen storage boxes 102.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ground-rail cryogenic box placement robot, comprising a plurality of refrigerated boxes (101) arranged in alignment on both sides of a track (100), characterized in that, Also includes: The layout unit (1) includes a carrying and transporting assembly (12) for receiving and transporting multiple cryopreservation boxes at the initial end of the track (100) to one side of the refrigerator (101), and a drive assembly (11) provided in the carrying and transporting assembly (12) for pushing out the cryopreservation boxes received in the carrying and transporting assembly (12). The sample receiving unit (2) is located at the opening end of the refrigerator (101) and is used to receive the frozen box after the transport component (12) is pushed out and send it into the refrigerator (101) for storage.

2. The ground-rail cryopreservation box placement robot according to claim 1, characterized in that: The driving component (11) includes: A sliding support (111) is slidably connected to the upper end of the track (100), and a lead screw for moving the sliding support (111) is installed in the track (100). A fixed block (112) is fixedly connected to the upper end of the sliding support (111), and a drive motor is installed inside the fixed block (112); A graded ejection mechanism (113) is located at one end of the fixed block (112) and is used to drive the carrier transfer assembly (12) to eject the cryopreservation box.

3. The ground-rail cryopreservation box placement robot according to claim 2, characterized in that: The carrier transfer assembly (12) includes a transfer mechanism (121), which includes: An extension rod (1211) is fixedly connected to both ends of the fixing block (112); The transfer frame (1212) is fixedly connected to one end of the extension rod (1211) relative to the fixed block (112); The transfer trough (1213) is provided in multiple equidistant spaces from top to bottom inside the transfer frame (1212) for transferring the cryopreservation box to the sample receiving unit (2). The transfer frame (1212) is provided with a cold source to provide a low temperature environment for the cryopreservation box in the transfer trough (1213). The limiting plate (1214) is fixedly connected to the bottom of the transfer groove (1213).

4. The ground-rail cryopreservation box placement robot according to claim 3, characterized in that: The carrier transfer assembly (12) further includes a carrier mechanism (122), which includes: The placement rack (1221) is slidably inserted into the transfer groove (1213) and corresponds one-to-one with the transfer groove (1213). The placement rack (1221) has an opening groove (12211) on one side to provide operating space for the robotic arm to place the cryopreservation box (102) onto the placement rack (1221). A side baffle (1223) is fixedly connected to one end of the placement rack (1221); A push shaft (1224) is slidably inserted into the side baffle (1223). One end of the push shaft (1224) and the inner side of the placement rack (1221) are fixedly connected to a top plate (12241) for pushing the cryopreservation box. A push plate (1225) is fixedly connected to one end of the plurality of push shafts (1224) opposite to the top plate (12241); The first push rod (1226) is fixedly connected to one side of the push plate (1225). The first push rod (1226) has a U-shaped section (12261) in the middle. The middle part of the U-shaped section (12261) is located outside the graded ejection mechanism (113). The U-shaped section (12261) has a first threaded hole (12262) inside.

5. The ground-rail cryopreservation box placement robot according to claim 4, characterized in that: A connecting rod (1227) is fixedly connected to one side of each of the plurality of placement racks (1221), and the connecting rod (1227) has a second threaded hole (12272) inside; The connecting rod (1227) is connected to a second push rod (12271) at one end relative to the placement frame (1221), and the second push rod (12271) is located outside the graded ejection mechanism (113).

6. The ground-rail cryopreservation box layout robot according to claim 5, characterized in that: The staged ejection mechanism (113) includes a drive shaft (1130); The drive shaft (1130) is provided with a first limiting ring (1134) for limiting the end of the second push rod (12271), a first idle groove (1133), a second threaded segment (1132) threadedly connected to the second threaded hole (12272), a second limiting ring (1135) for limiting the initial end of the second push rod (12271), a first threaded segment (1131) threadedly connected to the first threaded hole (12262), a first idle groove (1133), and a third limiting ring (1137) for limiting the initial end of the U-shaped segment (12261).

7. The ground-rail cryopreservation box layout robot according to claim 6, characterized in that: The sum of the lengths of the first idle slot (1133) and the second threaded segment (1132) is equal to the length of the second idle slot (1136); The length of the second threaded section (1132) is equal to the distance between the placement bracket (1221) and the limiting plate (1214); The length of the first threaded section (1131) is equal to the length of the push shaft (1224).

8. The ground-rail cryopreservation box layout robot according to claim 3, characterized in that: The sample receiving unit (2) includes: Mounting base (28) is fixedly connected to the inside of the refrigerator (101); A drive rack (27) is rotatably connected to the upper end of the mounting base (28), and a motor is provided at the upper end of the drive rack (27) and inside the refrigerator (101); A telescopic plate (21) is provided between the drive rack (27) and the inner wall of the refrigerator (101), and a rack area (25) that meshes with the drive rack (27) is provided on one side of the telescopic plate (21). A guide frame (26) is provided on the outside of the telescopic plate (21) to guide the movement of the telescopic plate (21). One side of the guide frame (26) is fixedly connected to the inner wall of the refrigerator (101). A vertical plate (23) is fixedly connected to one side of the telescopic plate (21) and near the opening of the refrigerator box (101). A support frame (24) for supporting the frozen box is fixedly connected to the inner side of the vertical plate (23). The support frame (24) corresponds one-to-one with the transfer groove (1213). A sealing door (22) is fixedly connected to one end of the telescopic plate (21) for sealing the refrigerator (101).

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