Transfer device for cryopreservation rack

Abstract

The utility model discloses a cryopreservation rack transfer device, and belongs to the technical field of sample storage, the cryopreservation rack transfer device comprises a support frame, a driving assembly, a lifting assembly and a detection assembly, the driving assembly is connected with the support frame to drive the support frame to move; the lifting assembly is arranged on the supporting frame and selectively connected with the cryopreservation frame. The detection assembly comprises a detection rod and a first sensor, the detection rod is slidably arranged on the supporting frame in the vertical direction and can slide between a first position and a second position, the first sensor is arranged on the supporting frame, and the detection rod can abut against the cryopreservation frame so as to move from the first position to the second position to trigger the first sensor. After the lifting assembly is connected with the cryopreservation frame, the detection rod abuts against the cryopreservation frame, and the first sensor is triggered; even if the cryopreservation frame is in an inclined state, due to the fact that the detection rod abuts against the cryopreservation frame, the distance requirement for triggering the first sensor can be met, and the problem of machine collision caused by misjudgment is fundamentally solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sample storage technical field especially relates to a frozen storage frame transfer device. BACKGROUND

[0002] With the increase of biological sample demand, the storage technology and equipment of biological sample also put forward higher requirement. Biological sample is generally stored in low temperature refrigerator or liquid nitrogen barrel and other low temperature storage equipment, and the frozen storage frame is one of the important structures in the low temperature storage equipment, and is mainly used for placing sample test tube or sample test tube turnover box.

[0003] Since the inside of the liquid nitrogen tank is a low temperature environment, in order to avoid the operator being frozen, the frozen storage frame stored in the liquid nitrogen tank is generally extracted by the lifting device. The existing lifting device includes a first sensor, when the frozen storage frame is 1-2mm away from the first sensor, the first sensor is triggered, so as to judge whether the lifting device has hooked the frozen storage frame. Since it is in a deep low temperature environment (-150 DEG C below), the first sensor is easy to fail, and the hooking mechanism is easy to tilt when lifting the frozen storage frame, so that the first sensor also cannot sense the frozen storage frame in the normal temperature environment. If the judgment is wrong, the lifting device will move with the frozen storage frame, causing serious impact accident. SUMMARY

[0004] The utility model aims at providing a frozen storage frame transfer device to solve the technical problem of inaccurate frozen storage frame presence or absence judgment in the prior art.

[0005] According to the above idea, the technical scheme adopted by the utility model is:

[0006] A frozen storage frame transfer device comprises:

[0007] A support frame;

[0008] A driving assembly connected with the support frame to drive the support frame to move;

[0009] A lifting assembly selectively connected with the frozen storage frame and arranged on the support frame;

[0010] A detection assembly comprising a detection rod and a first sensor, the detection rod is arranged on the support frame in a vertical direction and can slide between a first position and a second position, and the first sensor is arranged on the support frame, the detection rod can abut against the frozen storage frame to trigger the first sensor when moving from the first position to the second position.

[0011] Preferably, the support frame comprises a support plate and a first mounting plate arranged above the support plate, the first mounting plate is provided with a avoiding hole, the first sensor is arranged on the first mounting plate, and the detection rod is arranged to slide through the support plate and face the avoiding hole.

[0012] Preferably, the detection assembly further comprises an elastic member arranged between the detection rod and the first mounting plate, and the elastic member is used to provide a rebound force to the detection rod.

[0013] Preferably, the detection rod comprises a rod body and a protruding portion arranged on the outer periphery of the rod body, the protruding portion is arranged above the support plate, one end of the elastic member abuts against the protruding portion, and the other end of the elastic member abuts against the first mounting plate.

[0014] Preferably, the elastic member is sleeved on the detection rod, or the elastic member is arranged in parallel with and spaced from the detection rod.

[0015] Preferably, the support plate is provided with a mounting hole for the detection rod to pass through, and a linear bearing is arranged between the detection rod and the mounting hole.

[0016] Preferably, the lifting assembly comprises a driving member and a lifting member, the driving member is used to drive the lifting member to rotate around a first axis, the first axis extends in a vertical direction, the top of the cryopreservation frame is provided with a lifting hole, the lifting member can pass through the lifting hole and is clamped with the cryopreservation frame by rotating around the first axis.

[0017] Preferably, the lifting member comprises a lifting shaft and a lifting rod, the lifting shaft is connected with the driving member, the lifting rod is arranged at one end of the lifting shaft away from the driving member, and the lifting rod can pass through the lifting hole.

[0018] Preferably, the support frame is provided with a second sensor, the lifting member is fixedly provided with a trigger piece, the lifting member drives the trigger piece to rotate between a third position and a fourth position, and the trigger piece triggers the second sensor when being located at the third position.

[0019] Preferably, the support frame comprises a positioning pin, and the top of the cryopreservation frame is provided with a positioning hole, the positioning pin can be inserted into the positioning hole.

[0020] The utility model discloses the beneficial effects of:

[0021] The utility model provides a transfer device of cryopreservation rack, when not lifting the cryopreservation rack, the detection rod is in the first position, the first sensor is not triggered, when lifting the cryopreservation rack, the drive assembly drives the support frame to move down and close to the cryopreservation rack in the just upper direction of cryopreservation rack, so that the lifting assembly can be connected with the cryopreservation rack, and the lower end of the detection rod abuts against the cryopreservation rack, along with the support frame moving down, under the abutting effect of the cryopreservation rack, the detection rod moves from the first position to the second position to trigger the first sensor, after the lifting assembly is connected with the cryopreservation rack, the drive assembly drives the support frame to move up and can lift the cryopreservation rack, in the process of lifting the cryopreservation rack, the detection rod is in the state of abutting against the cryopreservation rack all the time, the first sensor is triggered, therefore can judge that the cryopreservation rack exists, even if the cryopreservation rack is in the inclined state, since the detection rod abuts against the cryopreservation rack and can satisfy the distance requirement of triggering the first sensor, fundamentally solve the problem of machine collision caused by misjudgment. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the first structure schematic diagram of existing cryopreservation rack;

[0023] Figure 2 It is the second structure schematic diagram of existing cryopreservation rack;

[0024] Figure 3 It is the structure schematic diagram of the transfer device of cryopreservation rack provided by the utility model embodiment;

[0025] Figure 4 It is the structure schematic diagram of the support frame provided by the utility model embodiment;

[0026] Figure 5 It is the structure schematic diagram of the lifting assembly provided by the utility model embodiment;

[0027] Figure 6 It is the structure schematic diagram of the detection assembly provided by the utility model embodiment;

[0028] Figure 7 It is the structure schematic diagram of the detection rod provided by the utility model embodiment;

[0029] Figure 8 It is the sectional view of the transfer device of cryopreservation rack and cryopreservation rack cooperation provided by the utility model embodiment;

[0030] Figure 9 It is Figure 8 The enlarged view of A of

[0031] In the drawing:

[0032] 100, cryopreservation rack; 110, outer frame body; 120, storage plate; 130, connecting piece; 131, lifting hole; 132, positioning hole;

[0033] 10, support frame; 11, support plate; 111, mounting hole; 12, first mounting plate; 121, avoiding hole; 13, vertical plate; 14, second mounting plate; 15, positioning pin;

[0034] 20, lifting assembly; 21, driving piece; 22, lifting piece; 221, lifting shaft; 222, lifting rod; 23, first bearing; 24, second sensor; 25, trigger piece; 26, coupling; 27, second bearing;

[0035] 30, detection assembly; 31, detection rod; 311, rod body; 312, protruding part; 313, trigger rod; 32, elastic piece; 33, first sensor; 34, linear bearing. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0037] In the description of the present application, unless explicitly defined and limited otherwise, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the present application, unless explicitly defined and limited otherwise, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0039] The technical scheme of the present application is further illustrated below by specific embodiments in conjunction with the drawings.

[0040] Reference is made to Figures 1 to 9The embodiment provides a cryopreservation rack transfer device which can drive a cryopreservation rack 100 to move. The cryopreservation rack 100 comprises an outer frame body 110 and a plurality of storage plates 120 arranged on the outer frame body 110, the plurality of storage plates 120 are arranged at intervals in a vertical direction, and the storage plates 120 are used for placing sample test tubes or sample test tube turnover boxes. The cryopreservation rack 100 further comprises a connecting piece 130 arranged on the top of the outer frame body 110, which is used for connecting with the cryopreservation rack transfer device.

[0041] The cryopreservation rack transfer device comprises a support frame 10, a driving assembly, a lifting assembly 20 and a detection assembly 30. The driving assembly is connected with the support frame 10 to drive the support frame 10 to move. The lifting assembly 20 is arranged on the support frame 10 and selectively connected with the cryopreservation rack 100. The detection assembly 30 comprises a detection rod 31 and a first sensor 33. The detection rod 31 is arranged on the support frame 10 in a vertical direction and can slide between a first position and a second position. The first sensor 33 is arranged on the support frame 10. The detection rod 31 can abut against the cryopreservation rack 100 to trigger the first sensor 33 when moving from the first position to the second position.

[0042] When the cryopreservation rack 100 is not lifted, the detection rod 31 is in the first position, and the first sensor 33 is not triggered. When the cryopreservation rack 100 is lifted, the driving assembly drives the support frame 10 to move downward above the cryopreservation rack 100 to be close to the cryopreservation rack 100, so that the lifting assembly 20 can be connected with the cryopreservation rack 100. At the same time, the lower end of the detection rod 31 abuts against the cryopreservation rack 100. With the downward movement of the support frame 10, the detection rod 31 moves from the first position to the second position under the abutting action of the cryopreservation rack 100 to trigger the first sensor 33. After the lifting assembly 20 is connected with the cryopreservation rack 100, the driving assembly drives the support frame 10 to move upward to lift the cryopreservation rack 100. During the lifting process of the cryopreservation rack 100, the detection rod 31 is always in the state of abutting against the cryopreservation rack 100, and the first sensor 33 is triggered, so that it can be judged that the cryopreservation rack 100 exists. Even if the cryopreservation rack 100 is in an inclined state, since the detection rod 31 abuts against the cryopreservation rack 100 to meet the distance requirement of triggering the first sensor 33, the problem of machine collision caused by misjudgment is fundamentally solved.

[0043] In the embodiment, the lifting assembly 20 comprises a driving member 21 and a lifting member 22, the driving member 21 is used to drive the lifting member 22 to rotate around a first axis, the first axis extends in the vertical direction, the top of the cryopreservation rack 100 is provided with a lifting hole 131, the lifting member 22 can pass through the lifting hole 131 and is clamped with the cryopreservation rack 100 by rotating around the first axis. When the lifting member 22 is connected with the cryopreservation rack 100, after the lower end of the lifting member 22 is inserted into the lifting hole 131, the driving member 21 drives the lifting member 22 to rotate around the first axis, so that the lifting member 22 is clamped with the cryopreservation rack 100. In other embodiments, the lifting assembly 20 comprises a first suction member, the top of the cryopreservation rack 100 is provided with a second suction member, the first suction member can be adsorbed with the second suction member, so that the lifting assembly 20 is connected with the cryopreservation rack 100. The driving member 21 can adopt an existing motor, and the motor is arranged on the support frame 10 and is used to drive the lifting member 22 to rotate.

[0044] Specifically, the lifting hole 131 is arranged on the connecting piece 130 of the cryopreservation rack 100, the lifting hole 131 comprises a penetrating portion and a limiting portion which are communicated with each other, the lower end of the lifting member 22 passes into the limiting portion from the penetrating portion, and the direction of the lifting member 22 is changed by rotating around the first axis, so that the lifting member 22 will not be separated from the penetrating portion.

[0045] The lifting member 22 comprises a lifting shaft 221 and a lifting rod 222, the lifting shaft 221 is connected with the driving member 21, and the lifting rod 222 is arranged at one end of the lifting shaft 221 away from the driving member 21. The lifting rod 222 can pass through the lifting hole 131. The lifting rod 222 can pass through the penetrating portion of the lifting hole 131, and after the lifting member 22 rotates around the first axis by a certain angle, the position of the lifting rod 222 will not change and will not pass out of the penetrating portion, so that the cryopreservation rack 100 can be lifted.

[0046] The lifting rod 222 extends perpendicularly to the lifting shaft 221. The lifting rod 222 can be arranged in one, two or more. Exemplarily, the lifting rod 222 is arranged in four, and the four lifting rods 222 are uniformly and spacedly arranged around the lifting shaft 221. Correspondingly, the lifting hole 131 on the cryopreservation rack 100 is in a cross shape.

[0047] When the cryopreservation rack 100 is lifted, the driving assembly drives the support frame 10 to move downward to be close to the cryopreservation rack 100 in the direction vertically above the cryopreservation rack 100, so that the lifting rod 222 passes through the lifting hole 131 of the cryopreservation rack 100. After the support frame 10 is moved downward to the position, the driving member 21 drives the lifting member 22 to rotate around the first axis, so that the lifting rod 222 rotates in the lifting hole 131 to change the position and cooperate with the cryopreservation rack 100. The driving assembly drives the support frame 10 to move upward, so that the cryopreservation rack 100 can be lifted.

[0048] The support frame 10 comprises a positioning pin 15, and the top of the cryopreservation rack 100 is provided with a positioning hole 132, and the positioning pin 15 can be inserted into the positioning hole 132. The driving assembly drives the support frame 10 to move downwards to be close to the cryopreservation rack 100 in the vertical direction above the cryopreservation rack 100, so that the lower end of the lifting piece 22 passes through the lifting hole 131 of the cryopreservation rack 100, and meanwhile the positioning pin 15 is inserted into the positioning hole 132. By matching the positioning pin 15 with the positioning hole 132, the cryopreservation rack 100 is more stably positioned to prevent the cryopreservation rack 100 from being displaced when the lifting piece 22 rotates.

[0049] The driving assembly is used for driving the support frame 10 to displace, and the support frame 10 can only move in a straight line, or can move in space, or can move along the X-axis, the Y-axis and the Z-axis which are perpendicular to each other. Exemplarily, the driving assembly adopts an existing mechanical hand. Exemplarily, the driving assembly comprises a motor, a lead screw and a nut, the motor is used for driving the lead screw to rotate, the nut is threadedly connected with the lead screw and is fixedly connected with the support frame 10, and the motor can drive the nut to move in a straight line by driving the lead screw to rotate, so as to drive the support frame 10 to move in a straight line, and specifically can move in a vertical direction, so as to realize lifting of the cryopreservation rack 100. Exemplarily, the driving assembly comprises an X-axis guide rail, an X-axis sliding block, a Y-axis guide rail, a Y-axis sliding block, a Z-axis guide rail and a Z-axis sliding block, the support frame 10 is fixedly connected with the Z-axis sliding block, the Z-axis sliding block is slidably connected with the Z-axis guide rail, the Z-axis guide rail is fixedly connected with the X-axis sliding block, the X-axis sliding block is slidably connected with the X-axis guide rail, the X-axis guide rail is fixedly connected with the Y-axis sliding block, and the Y-axis sliding block is slidably connected with the Y-axis guide rail.

[0050] When the cryopreservation rack 100 is not lifted, the detection rod 31 is in the first position, and the first sensor 33 is not triggered; when the cryopreservation rack 100 is lifted, under the abutting action of the cryopreservation rack 100, the detection rod 31 moves from the first position to the second position to trigger the first sensor 33; after the cryopreservation rack 100 is released, the detection rod 31 can move from the second position to the first position under the action of its own gravity to reset.

[0051] The support frame 10 plays a supporting role, and the structure of the support frame 10 can be set as required. In this embodiment, the support frame 10 comprises a support plate 11 and a first mounting plate 12 arranged above the support plate 11, and the detection assembly 30 is arranged between the support plate 11 and the first mounting plate 12. Specifically, the first sensor 33 is arranged on the first mounting plate 12, and the detection rod 31 slides through the support plate 11 in a vertical direction. The first mounting plate 12 is provided with an avoiding hole 121, the detection rod 31 faces the avoiding hole 121, and the detection rod 31 can pass through the avoiding hole 121 to trigger the first sensor 33 in the sliding process. The positioning pin 15 is arranged at the bottom of the support plate 11.

[0052] Preferably, the detection assembly 30 further comprises a resilient member 32, which is arranged between the detection rod 31 and the first mounting plate 12, and is configured to provide a resilient force to the detection rod 31. Specifically, the resilient member 32 is configured to guide the detection rod 31 to move from the second position to the first position away from the first sensor 33. When the cryogenic shelf 100 is lifted, the detection rod 31 is moved from the first position to the second position to trigger the first sensor 33 under the abutting action of the cryogenic shelf 100, so that the resilient member 32 is compressed; after the cryogenic shelf 100 is released, the detection rod 31 is moved from the second position to the first position to reset under the elastic force of the resilient member 32.

[0053] The detection rod 31 comprises a rod body 311 and a protruding portion 312 arranged on the outer periphery of the rod body 311, the protruding portion 312 is located above the support plate 11, one end of the resilient member 32 abuts against the protruding portion 312, and the other end of the resilient member 32 abuts against the first mounting plate 12. When the detection rod 31 moves upward, the protruding portion 312 moves upward to press the resilient member 32. The protruding portion 312 can be arranged in a ring shape around the periphery of the rod body 311, or can be a protrusion or a protruding column arranged on the rod body 311, as long as it can limit the resilient member 32. The resilient member 32 can be a spring or a rubber pad or other elastic structure.

[0054] The resilient member 32 can be sleeved on the detection rod 31, so that the detection rod 31 limits and guides the resilient member 32. Alternatively, the resilient member 32 and the detection rod 31 are arranged in parallel and spaced apart, which facilitates the replacement and maintenance of the resilient member 32.

[0055] The rod body 311 can be a constant-diameter rod or a variable-diameter rod. In the embodiment, the rod body 311 is provided with a trigger rod 313 at one end close to the first sensor 33, the diameter of the trigger rod 313 is smaller than that of the rod body 311, the trigger rod 313 is arranged in the avoiding hole 121 and can be inserted between the emitting portion and the receiving portion of the first sensor 33. The diameter of the rod body 311 is larger to ensure the structural strength of the detection rod 31, and the diameter of the trigger rod 313 is smaller to facilitate triggering the first sensor 33.

[0056] The first sensor 33 can adopt an existing photoelectric sensor, the emitting portion is a light source, the receiving portion is a photoelectric element, the light source emits light to the photoelectric element, the photoelectric element receives the light and generates an electric signal. When the trigger rod 313 is inserted between the emitting portion and the receiving portion, the emitting portion is blocked from emitting light to the receiving portion, so that the triggering of the photoelectric sensor is determined according to the change of the electric signal.

[0057] The support plate 11 is provided with a mounting hole 111 for penetrating the detection rod 31, and the protruding part 312 is located above the mounting hole 111 and limits the detection rod 31 to prevent the detection rod 31 from being pulled out of the mounting hole 111. Exemplarily, the diameter of the protruding part 312 is greater than the diameter of the mounting hole 111.

[0058] The detection rod 31 is in sliding connection with the support plate 11 and can be guided by the protrusion and the groove. Exemplarily, the detection rod 31 is provided with a protrusion, and the inner wall of the mounting hole 111 is provided with a groove, and the protrusion is in sliding connection with the groove. In this embodiment, a linear bearing 34 is arranged between the detection rod 31 and the mounting hole 111. The linear bearing 34 is a conventional bearing for limiting the linear motion of the detection rod 31 to reduce the friction.

[0059] The lifting piece 22 is connected with the support frame 10 through the first bearing 23. Specifically, the first mounting plate 12 is provided with a through hole, the first bearing 23 is arranged in the through hole in an interference manner, and the lifting piece 22 is in interference connection with the inner ring of the first bearing 23. The first bearing 23 can be a conventional deep groove ball bearing. The lifting piece 22 can be penetrated through the support plate 11 and in clearance fit with the support plate 11. Alternatively, the lifting piece 22 can be connected with the support plate 11 through the second bearing 27.

[0060] The support frame 10 is provided with the second sensor 24, and the lifting piece 22 is fixedly provided with the trigger piece 25. The lifting piece 22 drives the trigger piece 25 to rotate between the third position and the fourth position, and the trigger piece 25 triggers the second sensor 24 when it is located at the third position. When the lifting piece 22 is connected with the cryopreservation frame 100, the lower end of the lifting piece 22 is inserted into the lifting hole 131, and then the driving piece 21 drives the lifting piece 22 to rotate around the first axis by a set angle. According to the signal of the second sensor 24, the position of the trigger piece 25 can be determined, and then the orientation of the lifting rod 222 of the lifting piece 22 can be determined, so that whether the lifting rod 222 cooperates with the cryopreservation frame 100 can be known. The second sensor 24 can be a conventional photoelectric sensor.

[0061] The support frame 10 further comprises a vertical plate 13 arranged on the support plate 11, and the first mounting plate 12 is fixedly connected with the vertical plate 13. The support frame 10 further comprises a second mounting plate 14, which is located above the first mounting plate 12 and is fixedly connected with the vertical plate 13. The driving piece 21 is arranged on the second mounting plate 14, and the driving shaft of the driving piece 21 penetrates through the second mounting plate 14. The driving shaft is connected with the lifting piece 22 through the shaft coupling 26.

[0062] When the freezing rack 100 is not lifted, the detection rod 31 is in the first position, and the first sensor 33 is not triggered; when the freezing rack 100 is lifted, the driving assembly drives the support frame 10 to move downwards to be close to the freezing rack 100 in the direction vertically above the freezing rack 100, so that the lower end of the lifting piece 22 passes through the lifting hole 131 of the freezing rack 100, and the positioning pin 15 is inserted into the positioning hole 132, and the lower end of the detection rod 31 abuts against the freezing rack 100, and as the support frame 10 moves downwards, the elastic piece 32 is compressed under the abutting action of the freezing rack 100, the detection rod 31 moves from the first position to the second position to trigger the first sensor 33, and after the support frame 10 moves downwards to the position, the driving piece 21 drives the lifting piece 22 to rotate around the first axis, so that the lifting piece 22 cooperates with the freezing rack 100, and the driving assembly drives the support frame 10 to move upwards, so that the freezing rack 100 can be lifted, and in the process that the freezing rack 100 is lifted, the detection rod 31 is always in the state of abutting against the freezing rack 100, and the first sensor 33 is triggered, so that it can be judged that the freezing rack 100 exists.

[0063] The above embodiments only illustrate the basic principles and characteristics of the present application, and the present application is not limited by the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the present application, and these changes and modifications all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A freezing rack transfer device, characterized in that: include: Support frame (10); a driving assembly connected to the support frame (10) to drive the support frame (10) to move; A lifting assembly (20) is disposed on the support frame (10) and selectively connected to the freezing rack (100); The detection assembly (30) comprises a detection rod (31) and a first sensor (33). The detection rod (31) is slidably arranged on the support frame (10) in a vertical direction and can slide between a first position and a second position. The first sensor (33) is arranged on the support frame (10). The detection rod (31) can abut against the freezing rack (100) to move from the first position to the second position to trigger the first sensor (33).

2. The freezing rack transfer device according to claim 1, characterized in that: The support frame (10) comprises a support plate (11) and a first mounting plate (12) arranged above the support plate (11); a relief hole (121) is provided on the first mounting plate (12); the first sensor (33) is arranged on the first mounting plate (12); and the detection rod (31) is slidably arranged on the support plate (11) and faces the relief hole (121).

3. The freezing rack transfer device according to claim 2, characterized in that: The detection assembly (30) further comprises an elastic member (32), wherein the elastic member (32) is arranged between the detection rod (31) and the first mounting plate (12), and the elastic member (32) is used to provide a rebound force to the detection rod (31).

4. The freezing rack transfer device according to claim 3, characterized in that: The detection rod (31) comprises a rod body (311) and a protruding portion (312) arranged on the outer periphery of the rod body (311); the protruding portion (312) is located above the support plate (11); one end of the elastic member (32) abuts against the protruding portion (312), and the other end of the elastic member (32) abuts against the first mounting plate (12).

5. The freezing rack transfer device according to claim 4, characterized in that: The elastic member (32) is sleeved on the detection rod (31); or, the elastic member (32) and the detection rod (31) are parallel and spaced apart.

6. The freezing rack transfer device according to claim 2, characterized in that: The support plate (11) is provided with a mounting hole (111) for penetrating the detection rod (31), and a linear bearing (34) is provided between the detection rod (31) and the mounting hole (111).

7. The freezing rack transfer device according to claim 1, characterized in that: The lifting assembly (20) includes a driving member (21) and a lifting member (22), wherein the driving member (21) is used to drive the lifting member (22) to rotate around a first axis, wherein the first axis extends in a vertical direction, and a lifting hole (131) is provided on the top of the freezing rack (100), and the lifting member (22) can pass through the lifting hole (131) and be engaged with the freezing rack (100) by rotating around the first axis.

8. The freezing rack transfer device according to claim 7, characterized in that: The lifting member (22) includes a lifting shaft (221) and a lifting rod (222), wherein the lifting shaft (221) is connected to the driving member (21), and the lifting rod (222) is arranged at one end of the lifting shaft (221) away from the driving member (21), and the lifting rod (222) can pass through the lifting hole (131).

9. The freezing rack transfer device according to claim 7, characterized in that: A second sensor (24) is provided on the support frame (10), a trigger plate (25) is fixedly provided on the lifting member (22), the lifting member (22) drives the trigger plate (25) to rotate between a third position and a fourth position, and the trigger plate (25) triggers the second sensor (24) when it is located at the third position.

10. The freezing rack transfer device according to any one of claims 1 to 9, characterized in that: The support frame (10) includes a positioning pin (15), and a positioning hole (132) is provided on the top of the freezing rack (100), and the positioning pin (15) can be inserted into the positioning hole (132).

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