A cryopreservation box lifting and accessing device

Abstract

The present invention relates to a freezing box lifting and accessing device, which includes a fixed plate, a telescopic rod, and a Z-shaped transportation device. The Z-shaped transportation device includes a fixed plate, a hollow frame, a telescopic plate, a placement platform, and two sets of flip-type clamping arm assemblies. The top of the fixed plate is vertically connected to the bottom of the fixed disk through the telescopic rod. The bottom of the fixed plate is vertically connected to the top of the hollow frame. The bottom of the fixed plate is vertically connected to the placement platform through the telescopic plate. The telescopic plate and the placement platform are located in the internal cavity of the hollow frame. One set of flip-type clamping arm assemblies is installed on the upper part and the lower part of the hollow frame respectively. When the upper set of flip-type clamping arm assemblies is in the horizontally unfolded state, it is located in the upper part and the right side of the hollow frame. When the lower set of flip-type clamping arm assemblies is in the horizontally unfolded state, it is located in the lower part and the left side of the hollow frame. The upper and lower sets of flip-type clamping arm assemblies and the telescopic plate and the placement platform arranged vertically between the two sets of flip-type clamping arm assemblies form a Z-shaped transportation channel. The present invention can access a number of freezing boxes continuously and efficiently.

Description

Technical Field

[0001] The present invention relates to the technical field of biological sample freezing access equipment, and in particular to a freezing box lifting access equipment. Background Art

[0002] Biological samples are usually first collected and stored in cryotubes. Subsequently, several cryotubes can be centrally placed in a freezing box, and then several freezing boxes can be centrally placed on a freezing rack. This can not only achieve centralized storage of multiple groups of biological samples but also facilitate classification management of various biological samples. In actual work, it is often necessary to take out several freezing boxes at a time or store several freezing boxes at a time. Currently, the access of freezing boxes mainly uses transfer devices such as robotic arms to clamp and take out the freezing boxes from the freezing rack or clamp and store the freezing boxes on the freezing rack. However, the existing robotic arm can only pick up or store one freezing box at a time and cannot continuously and efficiently pick up or store several freezing boxes. Therefore, the efficiency of accessing freezing boxes is not high. Summary of the Invention

[0003] The technical problem solved by the present invention is that the existing robotic arm has low efficiency in accessing freezing boxes.

[0004] A freezing box lifting access equipment provided by the present invention includes a fixed disk, a telescopic rod, and a Z-shaped transportation device. The Z-shaped transportation device includes a fixed plate, a hollow frame, a telescopic plate, a placement platform, and two sets of flip-type clamping arm assemblies. The top of the fixed plate is vertically connected to the bottom of the fixed disk through the telescopic rod. The bottom of the fixed plate is vertically connected to the top of the hollow frame. The bottom of the fixed plate is vertically connected to the placement platform through the telescopic plate. The telescopic plate and the placement platform are located in the internal cavity of the hollow frame. One set of flip-type clamping arm assemblies is installed on each of the upper and lower parts of the hollow frame. In the horizontally expanded state, one set of flip-type clamping arm assemblies in the upper part is located in the upper part and the right side of the hollow frame, and one set of flip-type clamping arm assemblies in the lower part is located in the lower part and the left side of the hollow frame. The horizontally expanded states of the two sets of flip-type clamping arm assemblies and the telescopic plate and the placement platform arranged vertically between the two sets of flip-type clamping arm assemblies together form a Z-shaped transportation channel.

[0005] The present invention achieves the technical effect of continuously and efficiently storing a number of cryogenic storage boxes as needed by providing a Z-shaped transportation device including a hollow frame, a telescopic plate, a placement platform, and two sets of flip-type clamping arm assemblies. First, a set of horizontally extended flip-type clamping arm assemblies at the lower part is used to clamp and transport a cryogenic storage box from the left side horizontally to the right side. Secondly, the cryogenic storage box is transported vertically upward along the vertical direction by the telescopic plate and the placement platform to a set of horizontally extended flip-type clamping arm assemblies at the upper part. Finally, a set of horizontally extended flip-type clamping arm assemblies at the upper part is used to clamp and transport the cryogenic storage box from the left side horizontally to the right side again, so that the cryogenic storage box realizes the technical effect of clamping and transferring out the cryogenic storage box from the cryogenic storage rack after being transferred through the above Z-shaped transportation channel. At the same time, if the cryogenic storage box is reversely transferred along the above Z-shaped transportation channel, the technical effect of clamping the cryogenic storage box from the outside and transferring it to the cryogenic storage rack can be achieved.

[0006] The fixed disk is in a disc shape and is installed on a reciprocating linear motion guide rail above this cryogenic storage box lifting and accessing equipment. The reciprocating linear motion guide rail can drive the fixed disk to perform linear reciprocating motion in the horizontal plane as needed to quickly approach the cryogenic storage rack, facilitating the operation of this cryogenic storage box lifting and accessing equipment to access the cryogenic storage box as needed.

[0007] The outer shape of the hollow frame is a rectangular hollow frame with notches on both outer sides at the upper and lower ends. The outer shape of the fixed plate is a rectangular plate. The telescopic rod control assembly is arranged inside the fixed disk. The telescopic rod control assembly can drive the Z-shaped transportation device to move to a suitable position for clamping the cryogenic storage box by controlling the telescopic movement of the telescopic rod, so as to clamp and transport the cryogenic storage box on the cryogenic storage rack as needed.

[0008] Furthermore, two first clamping arm receiving grooves are vertically opened at the left ends of the front and rear side walls of the hollow frame and are used to install a set of the flip-type clamping arm assemblies at the upper part. Two second clamping arm receiving grooves are vertically opened at the right ends of the front and rear side walls of the hollow frame and are used to install a set of the flip-type clamping arm assemblies at the lower part. Each set of the flip-type clamping arm assemblies includes two flip-type clamping arm mechanisms that are parallel and oppositely arranged. Telescopic plate receiving grooves are provided along the vertical direction on the inner walls of the front and rear sides of the hollow frame.

[0009] The outer shapes of the two first clamping arm receiving grooves and the two second clamping arm receiving grooves are the same as the outer shape of the clamping arm and are used to accommodate the clamping arm. In the non-working state, the clamping arm is embedded inside the clamping arm receiving groove, which can effectively prevent the clamping arm from being collided by foreign objects. The telescopic plate receiving groove is used to accommodate the telescopic plate. The telescopic plate control assembly is arranged inside the fixed plate. The telescopic plate control assembly can control the up and down telescopic movement of the telescopic plate and drive the placement platform to perform reciprocating lifting motion.

[0010] Furthermore, the flip - type clamping arm mechanism includes a driving motor, a first ratchet wheel set, and a second ratchet wheel set. The driving motor is installed at both the upper part of the first clamping arm accommodation groove and the lower part of the second clamping arm accommodation groove. The first ratchet wheel set and the second ratchet wheel set are sleeved in parallel on the output shaft of the driving motor. The first ratchet wheel set includes a first ratchet wheel, and the second ratchet wheel set includes a second ratchet wheel. The first one - way tooth direction of the first ratchet wheel is opposite to the second one - way tooth direction of the second ratchet wheel.

[0011] Furthermore, the first ratchet wheel set includes a first ratchet wheel, a first pawl, and a first rotating wheel. The inner ring of the first ratchet wheel is sleeved on the output shaft of the driving motor, and the outer ring is equipped with the first rotating wheel. A number of first pawl slots are evenly distributed on the inner wall of the first rotating wheel, and the first pawl is installed in the first pawl slot. The width of the first pawl matches the width of the first one - way tooth slot of the first ratchet wheel. A first elastic mechanism is arranged inside the first pawl.

[0012] Furthermore, the second ratchet wheel set includes a second ratchet wheel, a second pawl, and a second rotating wheel. The inner ring of the second ratchet wheel is sleeved on the output shaft of the driving motor, and the outer ring is equipped with the second rotating wheel. A number of second pawl slots are evenly distributed on the inner wall of the second rotating wheel, and the second pawl is installed in the second pawl slot. The width of the second pawl matches the width of the second one - way tooth slot of the second ratchet wheel. A second elastic mechanism is arranged inside the second pawl.

[0013] The first elastic mechanism arranged inside the first pawl in the first ratchet wheel set can make the first ratchet wheel contract the first pawl into the first pawl slot when rotating counter - clockwise, and drive the first rotating wheel to move through the first pawl when the first ratchet wheel rotates clockwise. Similarly, the second elastic mechanism arranged inside the second pawl in the second ratchet wheel set can make the second ratchet wheel contract the second pawl into the second pawl slot when rotating counter - clockwise, and drive the second rotating wheel to move through the second pawl when the second ratchet wheel rotates clockwise.

[0014] By setting the first one - way tooth direction of the first ratchet wheel to be opposite to the second one - way tooth direction of the second ratchet wheel, the present invention can enable the output shaft of the driving motor to drive the first rotating wheel and the second rotating wheel to rotate respectively during forward and reverse rotations.

[0015] Furthermore, the flip-type clamping arm mechanism further includes a clamping arm, an elastic member, a threaded column, and a gear. One end of the clamping arm is a connecting portion, and the other end is a free end. Belt installation grooves and second ratchet set installation grooves are respectively formed in the inner wall of the connecting portion, and the belt installation grooves and the second ratchet set installation grooves respectively correspond to the positions of the first ratchet set and the second ratchet set. The elastic member and the threaded column are sequentially sleeved between the inner side of the connecting portion and the output end of the driving motor. The gear is sleeved on the threaded column, and the gear is used to drive the rack on the placement platform to move up and down. A driven wheel is installed at the belt installation groove at the free end.

[0016] The clamping arm is in the shape of a rectangular strip with rounded corners at both ends. The elastic member is in the shape of a cylinder with a spring inside. The threaded column is in the shape of a cylinder with threads on its cylindrical surface. The inner diameter of the gear is provided with an internal thread that matches the threaded column. The gear can rotate on the threaded column, and the gear can mesh with the rack on the placement platform and drive the threaded column to perform telescopic movement through the reciprocating rotation of the gear driven by the up and down movement of the rack.

[0017] Furthermore, the clamping arm includes a jaw moving groove, jaws, a damping ring, a belt, a magnetic column, and a magnetic switch. A jaw moving groove is provided on the inner side of the clamping arm. The magnetic column and the magnetic switch are provided at both ends of the jaw moving groove. Clamping arm connecting portion mounting holes are provided at the upper end of the first clamping arm receiving groove and the lower end of the second clamping arm receiving groove. A damping ring installation groove is formed on the outer circumference of the connecting portion, and the damping ring is installed in the damping ring installation groove. The belt is installed in the jaw moving groove. One end of the belt is sleeved on the first rotating wheel, and the other end is sleeved on the driven wheel.

[0018] The damping ring can increase the friction when the clamping arm moves on the Z-shaped transportation device to prevent the clamping arm from shaking without external force.

[0019] The clamping arm is connected to the Z-shaped transportation device through the elastic member. There is a certain gap between one end of the threaded column and the inner side surface of the connecting portion of the clamping arm, and the other end is movably connected to the base of the driving motor. The threaded column can perform a contraction movement inside the base of the driving motor. The first ratchet set is connected to one end of the belt and controls the movement of the belt. The second ratchet set is connected to the clamping arm and controls the rotational movement of the clamping arm.

[0020] Further, the jaw includes a jaw telescopic block, an upper connection block, a lower connection block, a left switch, and a right switch. The jaw adopts a rectangular block structure. In the middle of the front end of the jaw, there is a rectangular jaw telescopic block. The jaw telescopic block is elastically connected to the jaw. The upper and lower ends of the jaw are respectively provided with a rectangular upper connection block and a lower connection block. The left and right ends of the jaw are respectively provided with cylindrical left and right switches. Both the left switch and the right switch are elastic pressing switches with springs inside.

[0021] The jaw moving groove is used for the jaw to reciprocate inside it. By setting the elastic connection structure between the jaw telescopic block and the jaw, the jaw telescopic block can be driven to move on the jaw by an external force. For example, the jaw telescopic block can be pushed out by elastic force.

[0022] When the right switch and the left switch are pressed, they contract into the jaw. When the right switch and the left switch lose the extrusion force, the right switch and the left switch automatically pop out and reset under their own elastic forces. The right switch is the control switch for the upper connection block and the lower connection block. When the right switch is pressed, it can drive the upper connection block to extend and the lower connection block to contract inside the jaw. When the right switch loses the extrusion force, the right switch automatically pops out and resets under its own elastic force, and at this time, it will not drive the upper connection block and the lower connection block to reset. When the left switch is pressed, it can drive the upper connection block to contract inside the jaw and the lower connection block to extend. When the left switch loses the extrusion force, the left switch automatically pops out and resets under its own elastic force, and at this time, it will not drive the upper connection block and the lower connection block to reset.

[0023] When the jaw is inside the clamping arm, there is a certain distance between the jaw and the belt. When the belt moves, it will not drive the jaw to move along. When the upper connection block and the lower connection block on the jaw extend and contact the belt, at this time, the belt will drive the jaw to move in one direction. Preferably, a magnetic attraction member can be provided on the belt. The magnetic attraction member is used for the mutual combination with the upper connection block and the lower connection block to increase the combination force between the two, facilitating the belt to transport the jaw.

[0024] The magnetic switch is used to control the opening and closing of the magnetic column. When the jaw moves to one end of the jaw moving groove, it will squeeze the magnetic switch at this end and turn on the magnetic device. Among them, the magnetic force of the magnetic column on the left side of the clamping arm is opposite to the magnetic force of the jaw expansion block. By turning on the magnetic switch, the jaw expansion block on the left jaw can be extended through the magnetic force of the magnetic column. The jaw expansion block is used to clamp the cryopreservation box. When the jaw leaves the magnetic column on the left side, the jaw expansion block will be stuck inside the jaw and will not retract. A buckle device is arranged inside the jaw; until the jaw moves to the magnetic column on the right side, by squeezing the magnetic switch at the right end, the magnetic column generates a magnetic force that attracts the jaw expansion block, so that the jaw expansion block retracts into the inside of the jaw, thereby losing the clamping control of the cryopreservation box.

[0025] Further, the placement platform includes a rectangular plate-shaped platform, a cryopreservation box accommodation groove, an I-shaped connection block, a telescopic plate connection groove, and a rack. The cryopreservation box accommodation groove is provided in the middle of the rectangular plate-shaped platform, and the I-shaped connection blocks are provided on both the left and right sides. The lower part of the I-shaped connection block is provided with the racks at both the front and rear ends, and the telescopic plate connection groove is opened at the top. The telescopic plate is installed in the telescopic plate connection groove.

[0026] Further, the placement platform further includes a clamping notch and a conveying notch. The middle notches on the front and rear sides of the I-shaped connection block are respectively the clamping notch and the conveying notch. Description of the Drawings

[0027] Figure 1 It is a three-dimensional working state diagram of a preferred embodiment of the present invention, which shows a schematic diagram of the unfolded state of the clamping arm.

[0028] Figure 2 is Figure 1 a three-dimensional diagram of the shown embodiment, which shows a schematic diagram of the retracted state of the clamping arm.

[0029] Figure 3 is Figure 1 a three-dimensional diagram of the hollow frame in the shown embodiment.

[0030] Figure 4 is Figure 1 a three-dimensional diagram of the placement platform in the shown embodiment.

[0031] Figure 5 is Figure 1 an exploded three-dimensional diagram of the flip-type clamping arm mechanism in the shown embodiment.

[0032] Figure 6 is Figure 5 a structural schematic diagram of the first ratchet group in the shown embodiment.

[0033] Figure 7 The Figure 1 isometric view of the inner side of the clamping arm in the illustrated embodiment.

[0034] Figure 8 is Figure 7 One of the partial enlarged views of region C of

[0035] Figure 9 is Figure 7 Another partial enlarged view of region C of

[0036] Figure 10 is Figure 7 bottom view of

[0037] Figure 11 is Figure 10 sectional view taken along line A-A of

[0038] Figure 12 is Figure 11 partial enlarged view of region B of

[0039] Figure 13 is Figure 8 One of the isometric views of the jaw in

[0040] Figure 14 is Figure 8 Another isometric view of the jaw in , which shows the state diagram when the right switch is squeezed, driving the upper connecting block to extend and the lower connecting block (not shown in the lower part) to contract inside the jaw.

[0041] Figure 15 is Figure 7 rear view of

[0042] Figure 16 is Figure 15 sectional view taken along line D-D of

[0043] Figure 17 is Figure 1 isometric view of the cryopreservation rack in

[0044] Figure 18 is Figure 2 isometric view of the cryopreservation box in

[0045] Figure 19 is Figure 1 isometric view of the initial working state of the illustrated embodiment.

[0046] Figure 20 is Figure 19 isometric view of the expanded working state of the upper flip-type clamping arm assembly after the illustrated working state.

[0047] Figure 21 is Figure 20Three-dimensional view of the deployed working state of the lower flip-type clamping arm assembly after the shown working state.

[0048] Figure 22 is Figure 21 Three-dimensional view of the working state where the lower jaw moves horizontally towards the cryogenic storage box driven by a belt after the shown working state.

[0049] Figure 23 is Figure 22 Three-dimensional view of the working state where the lower jaw picks up the cryogenic storage box and moves horizontally towards the placement platform after the shown working state.

[0050] Figure 24 is Figure 23 Three-dimensional view of the working state where the cryogenic storage box is placed on the placement platform by releasing the lower jaw after the shown working state.

[0051] Figure 25 is Figure 24 Three-dimensional view of the working state where the cryogenic storage box is driven to move upward to the position of the upper flip-type clamping arm assembly by retracting the telescopic plate upward after the shown working state.

[0052] Figure 26 is Figure 25 Three-dimensional view of the working state where the cryogenic storage box is picked up by the upper jaw and driven by a belt to move towards the free end on the right side of the upper clamping arm after the shown working state.

[0053] Explanation of reference numerals:

[0054] 1 - Fixed disk; 2 - Z-shaped transportation device; 21 - Fixed plate; 22 - Telescopic rod; 23 - Hollow frame; 231 - First clamping arm receiving groove; 232 - Telescopic plate receiving groove; 24 - Telescopic plate; 25 - Placement platform; 251 - Cryogenic storage box receiving groove; 252 - I-shaped connecting block; 253 - Picking notch; 254 - Conveying notch; 255 - Telescopic plate connecting groove; 256 - Rack; 26 - Clamping arm; 261 - Jaw moving groove; 262 - Jaw; 2621 - Upper connecting block; 2622 - Right switch; 2623 - Lower connecting block; 2624 - Left switch; 263 - Jaw telescopic block; 264 - Second ratchet group installation groove; 265 - Damping ring; 266 - Belt; 267 - Magnetic column; 268 - Magnetic switch; 269 - Connecting part; 27 - Elastic part; 28 - Threaded column; 281 - Gear; 29 - Driving motor; 291 - First ratchet group; 292 - First ratchet; 293 - First pawl; 294 - First rotating wheel; 295 - Second ratchet group; 3 - Cryogenic storage rack; 31 - Partition; 4 - Cryogenic storage box; 41 - Picking groove; 42 - Conveying groove; 5 - Cryogenic storage tube. Detailed implementation

[0055] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings.

[0056] In the description of the present invention, it should be noted that the term nouns in each embodiment, such as "upper", "lower", "front", "rear", "left", "right", etc., which indicate directions, are only used to simplify the description of the positional relationship based on the drawings in the specification, and do not represent that the indicated elements and devices, etc., must be operated according to the specific directions, limited operations, methods, and structures described in the specification. Such directional nouns do not constitute a limitation to the present invention.

[0057] A freezing box lifting and accessing device provided by an embodiment of the present invention, as Figure 1 shown, includes a fixed plate 1, a telescopic rod 22, and a Z-shaped transportation device 2. The Z-shaped transportation device 2 includes a fixed plate 21, a hollow frame 23, a telescopic plate 24, a placement platform 25, and two sets of flip-type clamping arm assemblies. The top of the fixed plate 21 is vertically connected to the bottom of the fixed plate 1 through the telescopic rod 22. The bottom of the fixed plate 21 is vertically connected to the top of the hollow frame 23. The bottom of the fixed plate 21 is vertically connected to the placement platform 25 through the telescopic plate 24. The telescopic plate 24 and the placement platform 25 are located in the internal cavity of the hollow frame 23. One set of the flip-type clamping arm assemblies is installed on the upper and lower parts of the hollow frame 23 respectively. In the horizontally unfolded state, one set of the flip-type clamping arm assemblies in the upper part is located in the upper part and the right side of the hollow frame 23, and one set of the flip-type clamping arm assemblies in the lower part is located in the lower part and the left side of the hollow frame 23 in the horizontally unfolded state. The horizontally unfolded states of the two sets of the flip-type clamping arm assemblies, together with the telescopic plate 24 and the placement platform 25 arranged vertically between the two sets of the flip-type clamping arm assemblies, jointly form a Z-shaped transportation channel.

[0058] In this embodiment, by setting the Z-shaped transportation device 2 including the hollow frame 23, the telescopic plate 24, the placement platform 25, and two sets of flip-type clamping arm assemblies, the technical effect of continuously and efficiently storing a number of freezing boxes 4 as needed can be achieved. First, a set of horizontally unfolded flip-type clamping arm assemblies in the lower part is used to horizontally clamp the freezing box 4 on the left side and transport it to the right side horizontally. Secondly, the telescopic plate 24 and the placement platform 25 are used to transport the freezing box 4 vertically upward to a set of horizontally unfolded flip-type clamping arm assemblies in the upper part. Finally, a set of horizontally unfolded flip-type clamping arm assemblies in the upper part is used to clamp the freezing box 4 on the left side again and transport it to the right side horizontally, so that after the transfer of the freezing box 4 through the above Z-shaped transportation channel, the technical effect of clamping the freezing box 4 from the freezing rack 3 and transferring it out is achieved. At the same time, if the freezing box 4 is reversely transferred according to the above Z-shaped transportation channel, the technical effect of clamping the freezing box 4 from the outside and transferring it to the freezing rack 3 for storage can be achieved.

[0059] In this embodiment, the fixed disk 1 is in a disc shape and is installed on the reciprocating linear motion guide rail above the cryopreservation box lifting and accessing equipment. The reciprocating linear motion guide rail can drive the fixed disk 1 to perform linear reciprocating motion in the horizontal plane as needed, so as to quickly approach the cryopreservation rack 3, facilitating the cryopreservation box lifting and accessing equipment to perform the actions of accessing the cryopreservation box as needed.

[0060] In this embodiment, the outer shape of the hollow frame 23 is a rectangular hollow frame with notches on both outer sides at the upper and lower ends. The outer shape of the fixed plate 21 is a rectangular plate. The telescopic rod control component is arranged inside the fixed disk 1. By controlling the telescopic action of the telescopic rod 22, the Z-shaped transportation device 2 can be driven to a suitable position for clamping the cryopreservation box 4, so as to clamp and transport the cryopreservation box 4 on the cryopreservation rack 3 as needed.

[0061] Optionally, as Figures 1 - 3 shown, two first clamping arm receiving grooves 231 are vertically opened at the left ends of the front and rear side walls of the hollow frame 23 and are used for installing the upper set of the flip-type clamping arm assemblies. Two second clamping arm receiving grooves are vertically opened at the right ends of the front and rear side walls of the hollow frame 23 and are used for installing the lower set of the flip-type clamping arm assemblies. Each set of the flip-type clamping arm assemblies includes two flip-type clamping arm mechanisms that are parallel and oppositely arranged. Telescopic plate receiving grooves 232 are provided on the inner walls of the front and rear sides of the hollow frame 23 in the vertical direction.

[0062] In this embodiment, the outer shapes of the two first clamping arm receiving grooves 231 and the two second clamping arm receiving grooves are the same as the outer shape of the clamping arm 26 and are used for accommodating the clamping arm 26. When in the non-working state, the clamping arm 26 is embedded inside the clamping arm receiving groove 231, which can effectively prevent the clamping arm 26 from being collided by external objects. The telescopic plate receiving groove 232 is used for accommodating the telescopic plate 24. The telescopic plate control component is arranged inside the fixed plate 21. The telescopic plate control component can control the up and down telescopic action of the telescopic plate 24 and drive the placement platform 25 to perform reciprocating lifting motion.

[0063] Optionally, as Figure 5 、 Figure 6 and Figure 16 shown, the flip-type clamping arm mechanism includes a driving motor 29, a first ratchet group 291 and a second ratchet group 295. The driving motors 29 are installed at the upper part of the first clamping arm receiving groove 231 and the lower part of the second clamping arm receiving groove. The first ratchet group 291 and the second ratchet group 295 are arranged side by side on the output shaft of the driving motor 29. The first ratchet group 291 includes a first ratchet 292, the second ratchet group 295 includes a second ratchet, and the first one-way tooth direction of the first ratchet 292 is opposite to the second one-way tooth direction of the second ratchet.

[0064] Optionally, as shown in Figure 5 , Figure 6 and Figure 16 , the first ratchet group 291 includes a first ratchet 292, a first pawl 293 and a first rotating wheel 294. The inner ring of the first ratchet 292 is sleeved on the output shaft of the driving motor 29, and the first rotating wheel 294 is installed on the outer ring. A plurality of first pawl chutes are evenly distributed on the inner wall of the first rotating wheel 294, and the first pawl 293 is installed in the first pawl chute. The width of the first pawl 293 matches the width of the first one-way tooth groove of the first ratchet 292, and a first elastic mechanism is arranged inside the first pawl 293.

[0065] Optionally, as shown in Figure 5 and Figure 16 , and referring to Figure 6 , the second ratchet group 295 includes a second ratchet, a second pawl and a second rotating wheel. The inner ring of the second ratchet is sleeved on the output shaft of the driving motor 29, and the second rotating wheel is installed on the outer ring. A plurality of second pawl chutes are evenly distributed on the inner wall of the second rotating wheel, and the second pawl is installed in the second pawl chute. The width of the second pawl matches the width of the second one-way tooth groove of the second ratchet, and a second elastic mechanism is arranged inside the second pawl.

[0066] In this embodiment, the first elastic mechanism arranged inside the first pawl 293 in the first ratchet group 291 can cause the first ratchet 292 to retract the first pawl 293 into the first pawl chute when rotating counterclockwise in Figure 6 , and when the first ratchet 292 rotates clockwise in Figure 6 , drive the first rotating wheel 294 to move through the first pawl 293. Similarly, the second elastic mechanism arranged inside the second pawl in the second ratchet group 295 can cause the second ratchet to retract the second pawl into the second pawl chute when rotating counterclockwise in Figure 6 , and when the second ratchet rotates clockwise in Figure 6 , drive the second rotating wheel to move through the second pawl.

[0067] In this embodiment, by setting the direction of the first one-way teeth of the first ratchet 292 to be opposite to the direction of the second one-way teeth of the second ratchet, the output shaft of the driving motor 29 can drive the first rotating wheel 294 and the second rotating wheel to rotate respectively during forward and reverse rotations.

[0068] Optionally, as shown in Figure 5 and Figure 16As shown, the flip-type clamping arm mechanism further includes a clamping arm 26, an elastic member 27, a threaded column 28, and a gear 281. One end of the clamping arm 26 is a connecting portion 269, and the other end is a free end. The inner wall of the connecting portion 269 is respectively provided with a belt mounting groove and a second ratchet set mounting groove 264. The belt mounting groove and the second ratchet set mounting groove respectively correspond to the positions of the first ratchet set 291 and the second ratchet set 295. An elastic member 27 and a threaded column 28 are sequentially sleeved between the inner side of the connecting portion 269 and the output end of the driving motor 29. A gear 281 is sleeved on the threaded column 28. The gear 281 is used to drive a rack 256 on the placing platform 25 to move up and down. A driven wheel is installed at the belt mounting groove at the free end.

[0069] In this embodiment, the clamping arm 26 is in the shape of a rectangular strip with rounded corners at both ends. The elastic member 27 is in the shape of a cylinder with a spring inside. The threaded column 28 is in the shape of a cylinder with threads on its cylindrical surface. The inner diameter of the gear 281 is provided with an internal thread that matches the threaded column 28. The gear 281 can rotate on the threaded column 28. The gear 281 can mesh with the rack 256 on the placing platform 25, and drive the threaded column 28 to perform telescopic movement through the reciprocating rotation of the gear 281 driven by the up and down movement of the rack 256.

[0070] Optionally, as Figure 5 、 Figures 8 - 11 and Figure 15 shown, the clamping arm 26 includes a jaw moving groove 261, jaws 262, a damping ring 265, a belt 266, a magnetic column 267, and a magnetic switch 268. A jaw moving groove 261 is provided on the inner side of the clamping arm 26. Magnetic columns 267 and magnetic switches 268 are provided at both ends of the jaw moving groove 261. Clamping arm connecting portion mounting holes are provided at the upper end of the first clamping arm receiving groove 231 and the lower end of the second clamping arm receiving groove. A damping ring mounting groove is provided on the outer circle of the connecting portion 269, and the damping ring 265 is installed in the damping ring mounting groove. The belt 266 is installed in the jaw moving groove 261. One end of the belt 266 is sleeved on the first rotating wheel 294, and the other end is sleeved on the driven wheel.

[0071] In this embodiment, the damping ring 265 can increase the friction of the clamping arm 26 when moving on the Z-shaped transportation device 2 to prevent the clamping arm 26 from shaking without external force.

[0072] In this embodiment, the clamping arm 26 is connected to the Z-shaped transportation device 2 through an elastic member 27. There is a certain gap between one end of the threaded column 28 and the inner side of the connecting portion 269 of the clamping arm 26, and the other end is movably connected to the base of the driving motor 29. The threaded column 28 can perform a contraction movement inside the base of the driving motor 29. The first ratchet group 291 is connected to one end of the belt 266 and controls the movement of the belt 266, and the second ratchet group 295 is connected to the clamping arm 26 and controls the rotational movement of the clamping arm 26.

[0073] Optionally, as Figures 7 - 14 shown, the jaw 262 includes a jaw expansion block 263, an upper connection block 2621, a lower connection block 2623, a left switch 2624, and a right switch 2622. The jaw 262 adopts a rectangular block structure. The jaw expansion block 263 in the shape of a rectangular block is provided in the middle of the front end of the jaw 262. The jaw expansion block 263 is elastically connected to the jaw 262. The upper connection block 2621 and the lower connection block 2623 in the shape of rectangular blocks are respectively arranged at the upper and lower ends of the jaw 262. The left switch 2624 and the right switch 2622 in the shape of cylinders are respectively provided at the left and right ends of the jaw 262. Both the left switch 2624 and the right switch 2622 are elastic pressing switches with springs inside.

[0074] In this embodiment, the jaw moving groove 261 is used for the jaw 262 to perform reciprocating movement inside it. By setting the elastic connection structure between the jaw expansion block 263 and the jaw 262, the jaw expansion block 263 can be driven to move on the jaw 262 by an external force. For example, the jaw expansion block 263 can be ejected by elastic force.

[0075] In this embodiment, when the right switch 2622 and the left switch 2624 are pressed, they contract inside the jaw 262. When the right switch 2622 and the left switch 2624 lose the extrusion force, the right switch 2622 and the left switch 2624 automatically pop out and reset under their own elastic forces. The right switch 2622 is the control switch for the upper connection block 2621 and the lower connection block 2623. When the right switch 2622 is pressed, it can drive the upper connection block 2621 to elongate and the lower connection block 2623 to contract inside the jaw 262. When the right switch 2622 loses the extrusion force, the right switch 2622 automatically pops out and resets under its own elastic force, and at this time, it will not drive the upper connection block 2621 and the lower connection block 2623 to reset. When the left switch 2624 is pressed, it can drive the upper connection block 2621 to contract inside the jaw 262 and the lower connection block 2623 to elongate. When the left switch 2624 loses the extrusion force, the left switch 2624 automatically pops out and resets under its own elastic force, and at this time, it will not drive the upper connection block 2621 and the lower connection block 2623 to reset.

[0076] In this embodiment, when the jaw 262 is inside the clamping arm 26, there is a certain distance between the jaw 262 and the belt 266, and the belt 266 will not drive the jaw 262 to move along when it moves. When the upper connecting block 2621 and the lower connecting block 2623 on the jaw 262 extend and come into contact with the belt 266, at this time the belt 266 will drive the jaw 262 to move in one direction. A magnetic attraction member can be preferably arranged on the belt 266, and the magnetic attraction member is used for the mutual combination with the upper connecting block 2621 and the lower connecting block 2623 to increase the combination force between the two, so as to facilitate the belt 266 to transfer the jaw 262.

[0077] In this embodiment, the magnetic switch 268 is used to control the opening and closing of the magnetic column 267. When the jaw 262 moves to one end of the jaw moving groove 261, it will squeeze the magnetic switch 268 at this end and open the magnetic device 267. Among them, the magnetic force of the magnetic column 267 on the left side of the clamping arm 26 is opposite to the magnetic force of the jaw telescopic block 263. By opening the magnetic switch 268, the jaw telescopic block 263 on the left jaw 262 can be extended through the magnetic force of the magnetic column 267. The jaw telescopic block 263 is used to clamp the cryopreservation box 4. When the jaw 262 leaves the left magnetic column 267, the jaw telescopic block 263 will be stuck inside the jaw 262 and will not retract. A buckle device is arranged inside the jaw 262, which is not shown in the figure; until the jaw 262 moves to the right magnetic column 267, by squeezing the right magnetic switch 268, the magnetic column 267 generates a magnetic force that attracts the jaw telescopic block 263, so that the jaw telescopic block 263 retracts inside the jaw 262, thereby losing the clamping control of the cryopreservation box 4.

[0078] In this embodiment, the movement state of the jaw 262 is as follows:

[0079] The starting position of the jaw 262 is at the front end of the magnetic column 267 on the right side of the clamping arm 26 (refer to the direction of the jaw 262 shown in Figure 7 . At the same time, the jaw 262 will squeeze the right magnetic switch 268, so that the magnetic column 267 drives the jaw telescopic block 263 to contract inside the jaw 262; at the same time, the right switch 2622 on the jaw 262 is squeezed, so that the upper connecting block 2621 extends and the lower connecting block 2623 contracts inside the jaw 262, and the upper connecting block 2621 comes into contact with the belt 266. When the belt 266 moves, it drives the jaw 262 to move to the left side of the clamping arm 26. When the jaw 262 leaves the right magnetic column 267, the right magnetic switch 268 automatically pops out and resets due to the loss of the squeezing force, and at the same time, the contracted jaw telescopic block 263 will not extend out of the front surface of the jaw 262;

[0080] When the belt 266 drives the jaw 262 to move to the left end of the clamping arm 26, the belt 266 stops moving. The jaw 262 will squeeze the left magnetic switch 268, causing the magnetic column 267 to drive the jaw expansion and contraction block 263 on the jaw 262 to extend, so that the jaw expansion and contraction block 263 is inserted into the clamping groove 41 on the cryopreservation box 4 and the cryopreservation box 4 is clamped. At the same time, the left switch 2624 on the jaw 262 is squeezed, causing the upper connection block 2621 to contract inside the jaw 262 and the lower connection block 2623 to extend, and the lower connection block 2623 contacts the belt 266. Subsequently, the belt 266 continues to move, driving the jaw 262 to move towards the right side of the clamping arm 26. When the jaw 262 leaves the left magnetic column 267, the left magnetic switch 268 automatically pops out and resets due to the loss of the squeezing force. At the same time, the extended jaw expansion and contraction block 263 will not contract into the inside of the jaw 262;

[0081] When the jaw 262 carrying the cryopreservation box 4 moves to the right side of the clamping arm 26, the jaw 262 will squeeze the right magnetic switch 268, causing the magnetic column 267 to drive the jaw expansion and contraction block 263 to contract inside the jaw 262. At this time, the cryopreservation box 4 can be placed on the placement platform 25. At the same time, the right switch 2622 on the jaw 262 is squeezed, causing the upper connection block 2621 to extend and the lower connection block 2623 to contract inside the jaw 262, and the upper connection block 2621 contacts the belt 266. When the belt 266 moves, it drives the jaw 262 to move towards the left side of the clamping arm 26. When the jaw 262 leaves the right magnetic column 267, the right magnetic switch 268 automatically pops out and resets due to the loss of the squeezing force. At the same time, the contracted jaw expansion and contraction block 263 will not extend out of the front surface of the jaw 262. At this time, the belt 266 stops moving;

[0082] The above is the complete motion state of the jaw 262. By repeating the above steps cyclically, the jaw 262 can smoothly complete the actions of clamping, transferring, and releasing the cryopreservation box 4 while moving on the clamping arm 26.

[0083] Optionally, as Figure 2 and Figure 4 shown, the placement platform 25 includes a rectangular plate-shaped platform, a cryopreservation box accommodation groove 251, an I-shaped connection block 252, a telescopic plate connection groove 255, and a rack 256. The cryopreservation box accommodation groove 251 is provided in the middle of the rectangular plate-shaped platform, and the I-shaped connection blocks 252 are provided on both the left and right sides. The lower front and rear ends of the I-shaped connection block 252 are provided with the racks 256, and the telescopic plate connection groove 255 is opened at the top. The telescopic plate 24 is installed in the telescopic plate connection groove 255.

[0084] Optionally, as Figure 2 and Figure 4As shown, the placement platform 25 further includes a clamping notch 253 and a conveying notch 254. The middle notches on the front and rear sides of the I-shaped connecting block 252 are the clamping notch 253 and the conveying notch 254 respectively.

[0085] In this embodiment, the outer shape of the cryopreservation box accommodating groove 251 is a rectangular groove with the same size as the outer shape of the cryopreservation box 4 and is used to place and transport the cryopreservation box 4. The clamping notch 253 is used to provide space for the clamping arm 26 to place the cryopreservation box 4 clamped thereon onto the placement platform 25 when clamping and transferring the cryopreservation box 4 to the placement platform 25. The conveying notch 254 is used to provide space for the clamping arm 26 of the upper set of the flipping clamping arm assemblies to clamp the cryopreservation box 4 on the placement platform 25 when the placement platform 25 moves to the position of the upper set of the flipping clamping arm assemblies.

[0086] In this embodiment, as Figure 17 shown, one side of the cryopreservation rack 3 is a rectangular plate-shaped fixing member, and its transverse direction is provided with a support frame structure with a plurality of partitions 31 for accommodating a plurality of cryopreservation boxes 4.

[0087] In this embodiment, as Figure 18 shown, the cryopreservation box 4 is a rectangular box for accommodating a plurality of cryopreservation tubes 5. Two rectangular notch-shaped fixing grooves are provided on both sides of the cryopreservation box 4, which are the clamping groove 41 and the conveying groove 42 respectively. The clamping groove 41 is a snap groove for the clamping arm 26 to clamp the cryopreservation box 4 from the cryopreservation rack 3. When clamping, the clamping claw expansion block 263 is inserted into the clamping groove 41. The conveying groove 42 is used to facilitate the clamping claw expansion block 263 on the upper clamping arm 26 to be inserted into the conveying groove 42 and smoothly convey the cryopreservation box 4 to the external processing area when the placement platform 25 transports the cryopreservation box 4 to the upper part.

[0088] Next, in combination with Figure 2 、 Figures 19 - 26 the working process of the present invention will be described:

[0089] As Figure 2 shown, this figure is a schematic diagram of the state of the Z-shaped transportation device 2 when it has not started working. At this time, the clamping arm 26 is retracted inside the Z-shaped transportation device 2; the fixed disk 1 can move the Z-shaped transportation device 2 to a suitable position for clamping the cryopreservation box 4 through a reciprocating linear motion guide rail and other moving devices. At the same time, the telescopic rod 22 can also be appropriately extended as needed and drive the Z-shaped transportation device 2 to further move to a suitable position for clamping the cryopreservation box 4, so as to prepare for clamping and transferring the cryopreservation box 4;

[0090] As Figure 19 and Figure 20As shown, the telescopic plate 24 on the Z-shaped transport device 2 extends, driving the placement platform 25 to move downward. The rack 256 on the placement platform 25 meshes with the gear 281 at the end of the clamping arm 26 and drives the gear 281 to rotate. Since the gear 281 is movably connected, it cannot move linearly but only rotate. Thus, the gear 281 drives the threaded column 28 to perform telescopic movement, pushing out the upper clamping arm 26 from the Z-shaped transport device 2. At the same time, the driving motor 29 starts to work in the forward rotation direction, driving the second rotating wheel to rotate through the second ratchet group 295. The first rotating wheel 294 of the first ratchet group 291 does not rotate. The second ratchet group 295 drives the clamping arm 26 to rotate 90 degrees and move to the horizontal working position. At this time, the upper driving motor 29 stops working;

[0091] As Figure 21 shown, when the placement platform 25 moves to the bottom end, through the meshing transmission between the rack 256 and the gear 281, it can drive the lower clamping arm 26 to also move to the horizontal working position. Subsequently, the lower driving motor 29 stops working;

[0092] As Figure 22 shown, the driving motor 29 starts to reverse. The second rotating wheel of the second ratchet group 295 does not rotate. At this time, the clamping arm 26 is controlled and fixed by the damping ring 265. At the same time, the end of the clamping arm 26 is connected to the inside of the Z-shaped transport device 2 through the elastic member 27. The first ratchet group 291 drives the first rotating wheel 294 to rotate, thereby driving the internal belt 266 of the clamping arm 26 to move and carrying the jaw 262 towards the cryobox 4 on the cryopreservation rack 3;

[0093] As Figure 23 shown, when the jaw 262 moves to the maximum stroke, it squeezes the magnetic switch 268. The magnetic column 267 releases the magnetic force that repels the jaw expansion block 263 of the jaw 262, driving the jaw expansion block 263 to extend, so that the jaw expansion block 263 enters the clamping groove 41 on the cryobox 4, realizing the clamping action on the cryobox 4; Since a snap device is provided inside the jaw expansion block 263 and the jaw 262, the jaw expansion block 263 will not retract at this time;

[0094] As Figure 24 shown, the belt 266 drives the jaw 262 to perform a return movement. When it moves to the maximum stroke, it squeezes the magnetic switch 268 on this side. The magnetic column 267 releases the magnetic force that attracts the jaw expansion block 263 of the jaw 262, causing the jaw expansion block 263 to retract into the jaw 262, thereby releasing the clamping control of the cryobox 4 and placing the cryobox 4 on the placement platform 25;

[0095] As Figure 25As shown, when the cryopreservation box 4 is placed on the placement platform 25, the telescopic plate 24 contracts, driving the placement platform 25 to move upward, and at the same time driving the clamped cryopreservation box 4 to move upward until it moves to the upper part. The starting position of the claw 262 of the upper clamping arm 26 is the left end of the clamping arm 26. The upper claw 262 clamps the cryopreservation box 4, and then transports the clamped cryopreservation box 4 to the right working station, waiting for subsequent external personnel to remove it;

[0096] As Figure 26 shown, after the cryopreservation rack lifting device lifts the cryopreservation rack 3 to a suitable position, the claw 262 on the lower clamping arm 26 re-performs the above-mentioned clamping action on the cryopreservation box 4 at the appropriate position. Subsequently, the placement platform 25 moves downward again, waiting for the next transfer of the cryopreservation box 4; Repeating the above various working stages can complete the continuous and efficient clamping, transfer, and output of the cryopreservation box 4, which can greatly improve the working efficiency of accessing the cryopreservation box.

[0097] After the work of accessing the cryopreservation box 4 is completed, the drive motor 29 starts to rotate forward. The second ratchet group 295 drives the second rotating wheel to rotate, driving the clamping arm 26 to rotate 270 degrees and return to the initial working position. The placement platform 25 moves upward under the control of the telescopic plate 24, driving the gear 281 inside the Z-shaped transport device 2 to rotate through the racks 256 on both sides of the placement platform 25, driving the threaded column 28 to reset, that is, to contract into the Z-shaped transport device 2. The clamping arm 26 loses its restraint and returns to the obstruction, and under the drive of the elastic member 27, the clamping arm 26 contracts into the Z-shaped transport device 2 to prevent the clamping arm 26 from being collided. Before the clamping arm 26 is reset, the clamping arm 26 will be restricted by the outer shell of the Z-shaped transport device 2 horizontally and cannot enter the Z-shaped transport device 2.

[0098] Although the present invention discloses the above preferred embodiments, the present invention is not limited thereto. Those skilled in the art can make various permutations and combinations of the above preferred embodiments without departing from the spirit and scope of the present invention and form a complete technical solution. The protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A freezing box lifting access device, characterized in that, It includes a fixed disk (1), a telescopic rod (22) and a Z-shaped transportation device (2). The Z-shaped transportation device (2) includes a fixed plate (21), a hollow frame (23), a telescopic plate (24), a placement platform (25) and two sets of flip-type clamping arm assemblies. The top of the fixed plate (21) is vertically connected to the bottom of the fixed disk (1) through the telescopic rod (22). The bottom of the fixed plate (21) is vertically connected to the top of the hollow frame (23). The bottom of the fixed plate (21) is vertically connected to the placement platform (25) through the telescopic plate (24). The telescopic plate (24) and the placement platform (25) are located in the internal cavity of the hollow frame (23). One set of the flip-type clamping arm assemblies is installed on each of the upper and lower parts of the hollow frame (23). In the horizontally unfolded state, one set of the flip-type clamping arm assemblies in the upper part is located in the upper part and the right side of the hollow frame (23), and in the horizontally unfolded state, one set of the flip-type clamping arm assemblies in the lower part is located in the lower part and the left side of the hollow frame (23). The horizontally unfolded states of the two sets of the flip-type clamping arm assemblies and the telescopic plate (24) and the placement platform (25) arranged vertically between the two sets of the flip-type clamping arm assemblies together form a Z-shaped transportation channel.

2. The cryopreservation box lifting and accessing equipment according to claim 1, wherein On the left ends of the front and rear side walls of the hollow frame (23), two first clamping arm receiving grooves (231) are vertically opened for installing one set of the flip-type clamping arm assemblies in the upper part. On the right ends of the front and rear side walls of the hollow frame (23), two second clamping arm receiving grooves are vertically opened for installing one set of the flip-type clamping arm assemblies in the lower part. Each set of the flip-type clamping arm assemblies includes two flip-type clamping arm mechanisms arranged parallel and opposite to each other. On the inner walls of the front and rear sides of the hollow frame (23), telescopic plate receiving grooves (232) are vertically provided.

3. The cryopreservation box lifting access equipment according to claim 2, wherein The flip-type clamping arm mechanism includes a driving motor (29), a first ratchet group (291) and a second ratchet group (295). The driving motors (29) are installed on the upper part of the first clamping arm receiving groove (231) and the lower part of the second clamping arm receiving groove. The first ratchet group (291) and the second ratchet group (295) are coaxially sleeved on the output shaft of the driving motor (29). The first ratchet group (291) includes a first ratchet (292), and the second ratchet group (295) includes a second ratchet. The first one-way tooth direction of the first ratchet (292) is opposite to the second one-way tooth direction of the second ratchet.

4. The cryopreservation box lifting and accessing equipment according to claim 3, characterized in that, The first ratchet set (291) includes a first ratchet (292), a first pawl (293), and a first rotating wheel (294). The inner ring of the first ratchet (292) is sleeved on the output shaft of the driving motor (29), and the outer ring is equipped with the first rotating wheel (294). A number of first pawl slots are evenly distributed on the inner wall of the first rotating wheel (294), and the first pawl (293) is installed in the first pawl slots. The width of the first pawl (293) matches the width of the first one-way tooth slot of the first ratchet (292), and a first elastic mechanism is provided inside the first pawl (293).

5. The cryopreservation box lifting access equipment according to claim 3, characterized in that The second ratchet set (295) includes a second ratchet, a second pawl, and a second rotating wheel. The inner ring of the second ratchet is sleeved on the output shaft of the driving motor (29), and the outer ring is equipped with the second rotating wheel. A number of second pawl slots are evenly distributed on the inner wall of the second rotating wheel, and the second pawl is installed in the second pawl slots. The width of the second pawl matches the width of the second one-way tooth slot of the second ratchet, and a second elastic mechanism is provided inside the second pawl.

6. The cryopreservation box lifting and accessing equipment according to claim 4, wherein The flip-type clamping arm mechanism further includes a clamping arm (26), an elastic member (27), a threaded column (28), and a gear (281). One end of the clamping arm (26) is a connecting portion (269), and the other end is a free end. A belt installation groove and a second ratchet set installation groove (264) are respectively formed on the inner wall of the connecting portion (269). The belt installation groove and the second ratchet set installation groove respectively correspond to the positions of the first ratchet set (291) and the second ratchet set (295). The elastic member (27) and the threaded column (28) are sequentially sleeved between the inner side of the connecting portion (269) and the output end of the driving motor (29). The gear (281) is sleeved on the threaded column (28), and the gear (281) is used to drive the rack (256) on the placement platform (25) to move up and down. A driven wheel is installed at the belt installation groove at the free end.

7. The cryopreservation box lifting and accessing device according to claim 6, characterized in that, The clamping arm (26) includes a jaw moving groove (261), jaws (262), a damping ring (265), a belt (266), a magnetic column (267), and a magnetic switch (268). A jaw moving groove (261) is provided on the inner side of the clamping arm (26). The magnetic column (267) and the magnetic switch (268) are provided at both ends of the jaw moving groove (261). Clamping arm connecting portion mounting holes are provided at the upper end of the first clamping arm receiving groove (231) and the lower end of the second clamping arm receiving groove. A damping ring installation groove is formed on the outer circle of the connecting portion (269), and the damping ring (265) is installed in the damping ring installation groove. The belt (266) is installed in the jaw moving groove (261). One end of the belt (266) is sleeved on the first rotating wheel (294), and the other end is sleeved on the driven wheel.

8. The cryopreservation box lifting and accessing equipment according to claim 7, characterized in that The gripper (262) adopts a rectangular block structure. A rectangular block-shaped gripper telescopic block (263) is provided in the middle of the front end of the gripper (262). The gripper telescopic block (263) is elastically connected to the gripper (262). Upper and lower ends of the gripper (262) are respectively provided with a rectangular block-shaped upper connecting block (2621) and a lower connecting block (2623). Cylindrical left switch (2624) and right switch (2622) are respectively provided at the left and right ends of the gripper (262). Both the left switch (2624) and the right switch (2622) adopt elastic pressing switches with springs inside.

9. The cryopreservation box lifting access equipment according to claim 1, characterized in that, The placement platform (25) includes a rectangular plate-shaped platform, a cryogenic storage box receiving groove (251), an I-shaped connecting block (252), a telescopic plate connecting groove (255) and a rack (256). The cryogenic storage box receiving groove (251) is provided in the middle of the rectangular plate-shaped platform. The I-shaped connecting blocks (252) are provided on both left and right sides. The racks (256) are provided at the front and rear ends of the lower part of the I-shaped connecting block (252). The telescopic plate connecting groove (255) is opened at the top. The telescopic plate (24) is installed in the telescopic plate connecting groove (255).

10. The cryopreservation box lifting and accessing device according to claim 9, wherein The placement platform (25) further includes a gripping notch (253) and a conveying notch (254). Middle notches on the front and rear sides of the I-shaped connecting block (252) are respectively the gripping notch (253) and the conveying notch (254).

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