CN114276926A

CN114276926A - Hu sheep embryo in vitro incubator with protection casing

Info

Publication number: CN114276926A
Application number: CN202111489728.1A
Authority: CN
Inventors: 陈曦; 王争光; 张云超
Original assignee: Hainan Institute of Zhejiang University
Current assignee: Hainan Institute of Zhejiang University
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-04-05
Anticipated expiration: 2041-12-08
Also published as: CN114276926B

Abstract

The invention provides a Hu sheep embryo in-vitro incubator with a protective cover, which comprises an incubator body, an environment generating device arranged on the incubator body, a plurality of drawers arranged on the incubator body and protective covers arranged on the drawers; the protective cover is arranged on the drawer through a lifting device, and the lifting device comprises a boss arranged on the drawer, a longitudinal groove arranged on the boss, a transverse groove communicated with the longitudinal groove, a top rod arranged on the longitudinal groove, a first push rod arranged on the transverse groove and a second push rod arranged on the inner wall of the box body; the invention can automatically close the protective cover after the drawer is drawn out of the box body, thereby preventing the influence of the outside air on the embryo in the drawer, and can open the protective cover after the drawer is inserted into the box body for a period of time, thereby ensuring that the environment generating device in the box body has enough time to completely dilute the outside air mixed in the box body.

Description

Hu sheep embryo in vitro incubator with protection casing

Technical Field

The invention belongs to the field of embryo in-vitro preservation equipment, and particularly relates to a Hu sheep embryo in-vitro culture box with a protective cover.

Background

Traditional embryo incubator that has protection casing when needs take out embryo body from the incubator, the container of splendid attire incubator can be sealed to the protection casing, then with this container put into after the incubator, the protection casing will be opened to guarantee that the air circumstance in the container can receive the incubator and adjust.

However, after the container is taken out, the incubator is opened, so that the air in the incubator is not a preset value in a short time, and the embryo can be stored in a problem if the incubator is opened as soon as the incubator is put into the incubator.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the Hu sheep embryo in-vitro culture box with the protective cover.

In order to achieve the purpose, the invention adopts the following technical scheme: the Hu sheep embryo in-vitro culture box with the protective cover comprises a box body, an environment generating device arranged on the box body, a plurality of drawers arranged on the box body and the protective cover arranged on the drawers; the protective cover is arranged on the drawer through a lifting device, and the lifting device comprises a boss arranged on the drawer, a longitudinal groove arranged on the boss, a transverse groove communicated with the longitudinal groove, a top rod arranged on the longitudinal groove, a first push rod arranged on the transverse groove and a second push rod arranged on the inner wall of the box body; still include delay unit, delay unit is including locating transmission air flue on the box, with the initiative air flue of transmission air flue intercommunication, locate actuating lever in the initiative air flue, with the first spring that the actuating lever links to each other, locate the slip fluting of box bottom, locate the power rod of drawer bottom, with the second spring that the power rod links to each other, locate reset assembly on the power rod, locate fixed tenon piece on the power rod, locate the spacing tenon piece of drawer bottom and locating delay unit on the drawer.

The invention can automatically close the protective cover after the drawer is pulled out of the box body, thereby preventing the influence of the outside air on the embryo in the drawer, and can open the protective cover after the drawer is inserted into the box body for a period of time, thereby ensuring that the environment generating device in the box body has enough time, and the outside air mixed in the box body is completely diluted during the period of time when the drawer is pulled out of the box body.

Optionally, the second push rod is inserted into the transmission air passage, the driving rod is inserted into the driving air passage, and the limiting tenon block abuts against the fixing tenon block; the end part of the fixed tenon block is provided with an inclined plane, and the limiting tenon block is also provided with an inclined plane; the pull rod is connected to the limiting tenon block, a third spring is sleeved on the pull rod, one end of the third spring is abutted to the limiting tenon block, the other end of the third spring is abutted to a baffle, the pull rod penetrates through the baffle, the trigger block is arranged at the end of the pull rod, and the inclined plane is arranged on the trigger block.

Optionally, the time delay device includes a first baffle connected to the drawer, a fourth spring connected to the first baffle, a push rod connected to the fourth spring, an unlocking rod disposed at one end of the push rod, an unlocking rod disposed at the other end of the push rod, a power disc disposed at the other end of the push rod, a rotation shaft disposed on the drawer, a rotation disc disposed on the rotation shaft, a fixing column disposed on the rotation disc, a driving device disposed on one side of the rotation shaft, and a limiting device disposed at the other side of the rotation shaft.

Optionally, the limiting device includes a second baffle plate disposed on the drawer, a fifth spring disposed on the second baffle plate, a limiting curved bar connected to the fifth spring, a limiting stop bar disposed on the rotating disc, and a notch disposed on the limiting curved bar.

Optionally, the driving device includes a driving shaft slidably disposed on the drawer, a driving gear slidably disposed on the driving shaft, a fixed block connected to the rotating disc, a sixth spring connected to the fixed block, a fixed housing connected to the sixth spring, a plurality of driven gears disposed on the rotating shaft, a longitudinal moving device disposed on the drawer, and a transverse moving device disposed on the drawer; the driven gear is provided with a plurality of, and the diameter of a plurality of driven gears reduces gradually.

Optionally, the lateral moving device includes a guide chute arranged on the drawer, a guide through groove arranged on the guide chute, a fixing frame slidably arranged on the guide through groove, a rotating chain arranged on the fixing frame, a rotating column arranged on the rotating chain, a driving gear arranged on the driving shaft, and a triggering device arranged on the drawer, wherein the hair-sending device can drive the fixing frame to move up and down; when the fixed frame moves upwards, the rotating chain is meshed with the driving gear, and when the fixed frame moves downwards, the rotating chain is meshed with the driving gear.

Optionally, the longitudinal moving device includes a ratchet disposed at an end of the fixed casing, a ratchet bar disposed on the drawer, a first elastic member connected to the ratchet bar, a restoring member connected to the first elastic member, a second elastic member disposed on the fixed casing, a toggle rack connected to the second elastic member, a toggle tooth rotatably disposed on the drawer, and a first push rod disposed on the drawer

Optionally, the return assembly includes an inclined block connected to the first spring, a third elastic member connected to the inclined block, a third baffle connected to the third elastic member, a sliding block disposed between the third baffle and the inclined block, and a second push rod connected to the sliding block.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a cross-sectional view taken at a-a in fig. 2.

Fig. 4 is a front view of fig. 2.

Fig. 5 is a cross-sectional view at B-B in fig. 4.

Fig. 6 is an enlarged view of a portion a in fig. 5.

Fig. 7 is a perspective view of the drawer of fig. 1.

Fig. 8 is an enlarged view of fig. 7 at B.

Fig. 9 is a top view of fig. 7.

Fig. 10 is an enlarged view of fig. 9 at C.

Fig. 11 is an enlarged view of fig. 10 at D.

Fig. 12 is an enlarged view of fig. 10 at E.

Fig. 13 is a side view of fig. 1.

Fig. 14 is a cross-sectional view at C-C in fig. 13.

Fig. 15 is an enlarged view at F in fig. 14.

Fig. 16 is a perspective view of the back of the drawer of fig. 7.

Fig. 17 is an enlarged view at G in fig. 16.

Fig. 18 is an enlarged view at H of fig. 17.

Fig. 19 is an exploded view of the trigger device of fig. 1.

Fig. 20 is a perspective view of the fixed barrel of fig. 19.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

Referring to fig. 1-20, an external culture box with a protective cover for hu sheep embryos comprises a box body 1, an environment generating device 20 arranged on the box body 1, a plurality of drawers 2 arranged on the box body 1, and a protective cover 10 arranged on the drawers 2, wherein the drawers 2 are arranged in a plurality, and the drawers 2 are inserted into the box body 1. The environment generating device can control the temperature, the humidity, the carbon dioxide concentration and the oxygen concentration in the box body 1 so as to provide a corresponding environment for embryos arranged in the drawer 2, wherein the environment generating device can configure gas containing corresponding concentration, and then the gas is blown into the box body 1 through the fan so as to ensure the stability of each component in the box body.

Further, a longitudinal partition plate 11 is arranged on the box body 1, an air inlet cavity channel 111 is arranged on the longitudinal partition plate 11, an air outlet cavity channel 112 is arranged on the side wall of the box body 1, an air outlet 11a is arranged on the longitudinal partition plate 11, an air return opening 11b is arranged on the side wall of the box body 1, the air outlet 11a is communicated with the air inlet cavity channel 111, the air return opening 11b is communicated with the air outlet cavity channel 112, one end of the environment generating device is communicated with the air inlet cavity channel 111, the other end of the environment generating device is communicated with the air outlet cavity channel 112, so that the environment generating device can inject air into the air inlet cavity channel 111 and then recover the air from the air return cavity channel 112, and the problem of the gas environment in the whole box body 1 is solved.

Further, the protective cover 10 is disposed above the drawer 2, and is used for covering the drawer 2 to protect the drawer. In practical use, when the drawer 2 is arranged in the box body 1, a gap needs to be formed between the protective cover 2 and the drawer 2, so that gas in the box body 1 can enter the drawer 2; when the drawer 2 is pulled out from the box body 1, the protective cover 10 is required to be attached to the drawer 2, so that the blank body in the drawer 2 is completely isolated from the outside air.

Further, the protection cover 10 is disposed on the drawer 2 through a lifting device, the lifting device includes a boss 211 disposed on the drawer 2, a boss 211 disposed on the boss 211, a longitudinal groove 212 disposed on the boss 211, a transverse groove 213 communicated with the longitudinal groove 212, a top bar 214 disposed on the longitudinal groove 212, a first push rod 215 disposed on the transverse groove 213, and a second push rod 216 disposed on the inner wall of the box body 1.

Wherein, the top bar 214 is inserted into the longitudinal groove 212, the top bar 214 is hermetically matched with the longitudinal groove 212, the top bar 214 is abutted with the lower end surface of the protective cover 10, the first push bar 215 is arranged at the tail end of the transverse groove 213, the longitudinal groove 212 is communicated with the transverse grass 213, and the second push bar 216 is corresponding to the first push bar 215. When the drawer 2 is inserted into the box body 1, the second push rod 216 pushes the first push rod 215, so that the air pressure in the longitudinal groove 212 is increased, and thus the push rod 214 moves upwards to jack up the protection cover 10, and at this time, the drawer 2 and the box body 1 are communicated with each other.

Furthermore, a ventilation groove 201 is formed in the inner wall of the drawer 2, an opening at the bottom end of the ventilation groove 201 is formed above the boss 211, a ventilation opening 202 communicated with the ventilation groove 210 is further formed in the top end of the drawer 2, and the ventilation opening 202 is formed below the air outlet/return air opening 11 a/11 b.

Therefore, the present invention can ensure that the first and second push rods are separated from each other when the drawer 2 is drawn out, so that the protection cover 10 abuts against the boss 211, and the opening at the bottom end of the ventilation slot 201 is disposed at the upper end of the protection cover 10, thereby ensuring that the gas components in the drawer 2 are not affected by the external environment.

Further, since the drawer 2 forms a cavity in the box 1 after the drawer 2 is drawn out, air is mixed in, and therefore, after the drawer 2 is inserted back into the box 1, it is necessary to delay the rise of the protective cover 10, that is, after the gas components in the box 1 are uniformly mixed, the protective cover is lifted.

To this end, the invention also comprises delaying means able to delay the lifting of the protective cover 10. So that it is possible to wait for a period of time to actuate the lifting means to lift the protective cover 10 after the drawer 2 is inserted into the casing 1.

The delay device comprises a transmission air passage 221 arranged on the box body 1, a driving air passage 222 communicated with the transmission air passage 221, a driving rod 223 arranged in the driving air passage 222, a first spring 224 connected with the driving rod 223, a sliding groove 225 arranged at the bottom end of the box body 1, a power rod 226 arranged at the bottom end of the drawer 2, a second spring 227 connected with the power rod 226, a reset component arranged on the power rod 226, a fixed tenon block 228 arranged on the power rod 226, a limiting tenon block 229 arranged at the bottom end of the drawer 1 and a delay device arranged on the drawer 2.

The second push rod 216 is inserted into the transmission air passage 221, the driving rod 223 is inserted into the driving air passage, the limiting tenon block 229 abuts against the fixing tenon block 228, and thus after the drawer 2 is inserted into the box body 1, the limiting tenon block 229 is pulled by the delay assembly to release the fixing tenon block 228, the second spring 227 pushes the power rod 226, then the power rod 226 pushes the driving rod 223, and thus the second push rod 216 is pushed out, and the push rod 214 is lifted. The resetting assembly is capable of resetting the power rod 226 each time the drawer 2 is extracted.

Further, the end of the fixing tenon 228 is provided with an inclined surface, and the position-limiting tenon 229 is also provided with an inclined surface.

Further, the reset assembly includes a handle 2261 disposed on the driving rod 226 and a handle disposed on the drawer 2, wherein the driving rod 226 penetrates through the drawer 2, and the handle 2261 is disposed inside the handle, so that the driving rod 226 needs to be pulled down each time the drawer 2 is pulled out.

Be connected with pull rod 2291 on the spacing tenon piece 229, the cover is equipped with third spring 2292 on the pull rod 2291, third spring 2292 one end with spacing tenon piece 229 butt, the other end butt has baffle 2293, pull rod 2291 passes this baffle 2293 to pull rod 2291's tip is provided with trigger block 2294, trigger block 2294 is provided with the inclined plane. The baffle 2293 is arranged at the bottom end of the drawer 2, and the trigger 2294 is pressed downwards to pull the limiting tenon 229 and further loosen the power rod 226. The time delay device can be used for poking the trigger block 2294 after the drawer 2 is inserted into the box body 1 for the preset time according to specific conditions.

The time delay device comprises a first baffle 231 connected with the drawer 2, a fourth spring 232 connected with the first baffle 231, a push rod 233 connected with the fourth spring 232, an unlocking rod 234 arranged at one end of the push rod 233, a power disc 235 arranged at the other end of the push rod 233, a rotating shaft 236 arranged on the drawer 2, a rotating disc 237 arranged on the rotating shaft 236, a fixing column 238 arranged on the rotating disc 237, a driving device arranged at one side of the rotating shaft 236 and a limiting device arranged at the other side of the rotating shaft 236.

The driving device can drive the rotating shaft 236 to rotate, the rotating shaft 236 is connected with the rotating disc 237 in a rotation stopping manner, so that the rotating shaft 236 drives the rotating disc 237 to rotate for one circle, and the fixed column 238 pushes the primary power disc 235. For this purpose, the edge of the fixing post 238 is curved, and the side wall of the power disc 235 is tapered.

The limiting means is used to limit the rotation of the rotating disc 237, i.e. to make only one rotation of the rotating disc 237 after each activation.

The limiting device comprises a second baffle 241 arranged on the drawer 2, a fifth spring 242 arranged on the second baffle 241, a limiting curved rod 243 connected with the fifth spring 242, a limiting curved rod 244 arranged on the rotating disc 237, and a notch 2431 arranged on the limiting curved rod 243. The limit curved bar 243 protrudes from the baffle 200 on the drawer 2, so that in a normal state, the limit baffle 244 abuts against the limit curved bar 243, when the rotating disc 237 is required to rotate, the limit curved bar 243 is pressed once, and when the notch 2431 is aligned with the limit curved bar 244, the rotating disc 237 can rotate.

Therefore, the present invention can drive the rotating disc 237 to rotate after the drawer 2 is inserted into the box 1 through the driving device, so as to guide the position-limiting tenon block 228 to reset, and further guide the top rod 214 to eject. The rotation speed of the rotation shaft 236 is adjusted by the driving device, so that the waiting time after the drawer 2 is inserted into the box body 1 can be adjusted, and the top rod 214 is lifted.

Drive arrangement locates including the slip driving shaft 311 on the drawer 1, the slip is located driving gear 312 on the driving shaft 311, with fixed block 313 that the rolling disc 312 links to each other, with the sixth spring that the fixed block 313 links to each other, with the set casing 314 that the sixth spring links to each other, locate a plurality of driven gear 315 on the axis of rotation 236, locate longitudinal movement device on the drawer 1, locate lateral shifting device on the drawer 1 and with the energy storage device of lateral shifting device interrelatedness, energy storage device can give torsional spring 319 accumulates mechanical energy, lateral shifting device can lateral shifting driving shaft 311, longitudinal movement device can longitudinal movement driving gear 312.

The driven gears 318 are provided in plural, and the diameter of the plurality of driven gears 318 is gradually reduced. Thus, by means of the longitudinal movement device, the driving gear 312 and the different driven gears 318 are moved to be aligned with each other, and the sixth spring 314 can push the driving gear 312 to be aligned with the driven gear 318 when facing each other.

The traverse device is capable of disengaging the drive gear 312 and the driven gear 318 by moving the rotation shaft 311 in the traverse direction when the drive gear 312 is reset, and preventing the end surface of the driven gear 318 from blocking the drive gear 312.

The transverse moving device comprises a guide sliding groove 321 arranged on the drawer 2, a guide through groove 322 arranged on the guide sliding groove 321, a fixed frame 323 arranged on the guide through groove 322 in a sliding manner, a rotating chain 324 arranged on the fixed frame 323, a rotating column 325 arranged on the rotating chain 324, a driving gear 326 arranged on the driving shaft 311 and a trigger device arranged on the drawer 1. The hair-sending device can drive the fixing frame 323 to move up and down; when the holder 323 moves upward, the rotation chain 324 is engaged with the driving gear 326, and when the holder 323 moves downward, the rotation chain 324 is engaged with the driving gear 326.

The rotary post 325 protrudes from the drawer 2, the rotary post 325 can slide in the guide channel 322, and the guide channel 322 penetrates through the plate body on the drawer 2. The rotation post 325 may rotate the drive chain. Thus, by driving the rotation post 325 to rotate, the rotation chain 324 can be driven to rotate, and then the driving shaft 311 can be driven to rotate.

The following describes the operation of the present invention with reference to the above-described structure. When it is desired to check embryos inserted in drawers on the housing 1.

Firstly, pulling a handle 2261 to guide the reset assembly to start, wherein the limiting tenon block 229 limits the fixing tenon block 228, and then pulling the drawer 2 out of the box body 1, wherein embryos in the drawer 2 can be observed; at this time, since the second push rod 216 and the first push rod 215 are no longer abutted, and further before the drawer 2 is completely drawn out of the box body 1, the protection cover 10 moves downwards to close the drawer, so that the embryo can be observed through the transparent protection cover; at the same time, the driving rod 223 will retract under the pulling of the first spring 224, and the second pushing rod 216 will also retract synchronously.

And secondly, inserting the drawer 2 back into the box body 1, and determining the lifting time of the ejector rod according to the time for pulling the drawer 2 out of the box body 1 in the first step. In a specific manner, the fixing housing 314 is moved by the longitudinal moving device, so that the fixing housing 314 will drive the driving gear 312 to move on one side of the driven gear 315, and the driving gear 312 will always abut against the driven gear 315 under the urging of the sixth spring.

Third, the fixing frame 323 is moved downward by the trigger mechanism, and the rotating chain 324 and the driving gear 326 are disengaged from each other, so that the driving shaft 311 can rotate.

Fourth, since the torsion spring is provided on the driving shaft 311, the driving shaft 311 drives the driven gear 318 after the driving shaft 311 is disengaged from the rotating chain 324.

Fifthly, after the trigger pushes the fixed frame 323 to move downwards, the limiting curved rod 243 is pressed immediately to enable the limiting device to stop limiting the rotating disc 237, then the limiting stop lever 244 passes through the notch 2431, at this time, the rotating disc 237 rotates one circle, and then is limited by the limiting device.

In a sixth step, after one rotation of the rotating disc 237, the power disc 235 is pushed, and the unlocking lever 234 pushes the trigger block 2294, so that the stop tenon 229 is retracted, and the stop tenon 229 is disengaged from the fixed tenon 228.

Seventh, the power rod 226 pushes the driving rod 223 to move under the pushing of the second spring 227, and then the driving rod 223 pushes the second pushing rod 216 through the transmission air channel 221, and then the pushing rod 214 is pushed up through the second pushing rod 216, so as to lift the protection cover 10.

Further, when it is required to charge the torsion spring 316 of the driving shaft 311, the following manner can be adopted, and for this reason, in this embodiment, the lateral moving means is the charging means. The specific mode is as follows, at first through trigger device, guide mount 323 upward movement lets rotation chain 324 and drive gear 326 mesh, then rotates rotation post 325, and then rotation post 325 drives chain 324 and rotates to drive driving shaft 311 lateral sliding earlier, after the terminal butt of driving shaft 311 and direction spout 321, continuously rotate rotation post 325, just can drive rotation shaft 311 and rotate, thereby can give torsional spring 316 the energy storage. At this time, the driving gear 312 has been pulled out from the side of the driven gear 318.

In summary, the present invention can automatically close the protection cover after the drawer 2 is pulled out from the box 1, so as to prevent the influence of the external air on the embryo in the drawer 2, and after the drawer 2 is inserted into the box 1 for a period of time, the protection cover is opened, so that the environment generating device in the box 1 has enough time, and the external air mixed into the box 1 is completely diluted during the period of time when the drawer 2 is pulled out of the box 1.

Further, the triggering device and the longitudinal moving device are simple transmission structures. The present invention provides the following structure, and it is anticipated that in other embodiments, other designs may be used.

Further, in practical use, the longitudinal moving device is preferably capable of guiding the fixed shell 314 to move a distance of one frame at a time.

The longitudinal moving device comprises a ratchet 331 arranged at an end of the fixed shell 314, a ratchet rack 332 arranged on the drawer 2, a first elastic member 333 connected with the ratchet rack 332, a restoring component connected with the first elastic member 333, a second elastic member 334 arranged on the fixed shell 314, a toggle rack 335 connected with the second elastic member 334, a toggle tooth 336 rotatably arranged on the drawer 2, and a first push rod 337 arranged on the drawer 1.

The ratchet 331 and the ratchet rack 332 are engaged with each other, the rotating shaft 3361 is disposed on the toggle teeth 336, one side of the toggle teeth 336 located on the rotating shaft 3361 is clamped into the toggle rack 335, and the other side located on the rotating shaft is abutted to the first push rod 337.

Thus, the stationary case 314 can be pushed to move a distance each time the first push rod 337 is pressed one time.

The restoring assembly includes an inclined block 341 connected to the first spring 333, a third elastic member 342 connected to the inclined block 341, a third blocking plate 343 connected to the third elastic member 342, a sliding block 344 disposed between the third blocking plate 343 and the inclined block 341, and a second push rod 345 connected to the sliding block 344.

Thus, the inclined block 341 and the sliding block 344 are inclined, so that the inclined block 341 is guided to move toward the third blocking plate 343 by pressing the inclined block by pushing the second push rod 345, and the third blocking plate 343 is coupled to the drawer 2, so that the engaged states of the ratchet 331 and the ratchet 332 are disengaged from each other.

Further, the structure of the trigger device may adopt the following arrangement.

The trigger device comprises a fixed cylinder 42, a sliding claw 43, a reset piece 44, a pushing piece 45 and a transmission rod 34, wherein the bottom end of the fixed cylinder 42 is connected with the drawer 2, a plate for fixing the fixed cylinder 42 is arranged on the drawer 2, a hole is arranged on the plate, one end of the transmission rod 34 is abutted against the sliding claw 43, and the other end of the transmission rod passes through the hole and is inserted below the plate; the reset piece 44 is sleeved on the transmission rod 34, one end of the reset piece 44 is abutted with the plate, and the other end of the reset piece 44 is abutted with the circular plate arranged at the end part of the transmission rod 34.

Further, a plurality of ratchet blocks 421 are arrayed on the inner wall of the fixed cylinder 42, shallow grooves 4211 are arranged on the ratchet blocks 421, and deep grooves 4212 are arranged between two adjacent ratchet blocks 422.

The slide claw 43 is provided with a claw 431, the claw 431 is provided with an inclined guide surface 4311, the claw 431 is partially abutted against the ratchet block 421, and the ratchet block 421 is provided with an inclined surface.

The pushing piece 45 is provided with a plurality of pressing strips 451, the pressing strips 451 are provided with pushing inclined planes 4511, and the sliding claws 43 can slide when the pushing inclined planes 4511 are abutted against the guide surfaces 4311. A return spring is abutted between the pusher 45 and the sliding pawl 43.

Thus, when the pushing member 45 is pressed, the pushing member 45 moves downwards, the sliding claw 43 moves downwards at the same time, the pushing member 45 is continuously pressed, the sliding claw 43 is guided to slide, and the claw 431 is clamped in the shallow groove 4211 at the same time. In this manner, the transmission rod 34 is moved downward and the transmission rod 34 is now extended a longer distance from the inside of the fixed cylinder 42.

The pushing member 45 is further pressed, the guide sliding pawl 43 slides, and the claw 431 is clamped in the deep groove 4212. In this manner, the drive link 34 moves upward, with the drive link 34 extending a short distance from the fixed barrel 42.

In this way, the drive link 34 can be guided to have two different states by the trigger assembly.

The two states of the holder 323 can be controlled by the transmission rod 34.

It is to be understood that the described embodiments are merely a few embodiments of the invention and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims

1. The Hu sheep embryo in-vitro culture box with the protective cover is characterized by comprising a box body, an environment generating device arranged on the box body, a plurality of drawers arranged on the box body and a protective cover arranged on the drawers; the protective cover is arranged on the drawer through a lifting device, and the lifting device comprises a boss arranged on the drawer, a longitudinal groove arranged on the boss, a transverse groove communicated with the longitudinal groove, a top rod arranged on the longitudinal groove, a first push rod arranged on the transverse groove and a second push rod arranged on the inner wall of the box body; still include delay unit, delay unit is including locating transmission air flue on the box, with the initiative air flue of transmission air flue intercommunication, locate actuating lever in the initiative air flue, with the first spring that the actuating lever links to each other, locate the slip fluting of box bottom, locate the power rod of drawer bottom, with the second spring that the power rod links to each other, locate reset assembly on the power rod, locate fixed tenon piece on the power rod, locate the spacing tenon piece of drawer bottom and locating delay unit on the drawer.

2. The hu sheep embryo in-vitro culture box with the protective cover as claimed in claim 1, wherein the second push rod is inserted into the transmission air passage, the driving rod is inserted into the driving air passage, and the limiting tenon block is abutted with the fixing tenon block; the end part of the fixed tenon block is provided with an inclined plane, and the limiting tenon block is also provided with an inclined plane; the pull rod is connected to the limiting tenon block, a third spring is sleeved on the pull rod, one end of the third spring is abutted to the limiting tenon block, the other end of the third spring is abutted to a baffle, the pull rod penetrates through the baffle, the trigger block is arranged at the end of the pull rod, and the inclined plane is arranged on the trigger block.

3. The hu-sheep embryo in-vitro culture box with the protective cover according to claim 2, wherein the time delay device comprises a first baffle connected with the drawer, a fourth spring connected with the first baffle, a push rod connected with the fourth spring, an unlocking rod arranged at one end of the push rod, a rotating shaft arranged at the other end of the push rod and a power disc, a rotating disc arranged on the drawer, a rotating disc arranged on the rotating shaft, a fixing column arranged on the rotating disc, a driving device arranged at one side of the rotating shaft and a limiting device arranged at the other side of the rotating shaft.

4. The hu-sheep embryo in-vitro culture box with the protective cover according to claim 3, wherein the limiting device comprises a second baffle plate arranged on the drawer, a fifth spring arranged on the second baffle plate, a limiting curved rod connected with the fifth spring, a limiting stop rod arranged on the rotating disc, and a notch arranged on the limiting curved rod.

5. The hu-sheep embryo in-vitro culture box with the protective cover according to claim 4, wherein the driving device comprises a driving shaft slidably arranged on the drawer, a driving gear slidably arranged on the driving shaft, a fixed block connected with the rotating disc, a sixth spring connected with the fixed block, a fixed shell connected with the sixth spring, a plurality of driven gears arranged on the rotating shaft, a longitudinal moving device arranged on the drawer, and a transverse moving device arranged on the drawer; the driven gear is provided with a plurality of, and the diameter of a plurality of driven gears reduces gradually.

6. The hu-sheep embryo in-vitro culture box with the protective cover according to claim 5, wherein the transverse moving device comprises a guide chute arranged on the drawer, a fixing frame arranged on a guide chute guide through groove, a rotating chain arranged on the fixing frame, a rotating column arranged on the rotating chain, a driving gear arranged on the driving shaft, and a triggering device arranged on the drawer, wherein the fixing frame can be driven by the hair-cutting device to move up and down; when the fixed frame moves upwards, the rotating chain is meshed with the driving gear, and when the fixed frame moves downwards, the rotating chain is meshed with the driving gear.

7. The hu sheep embryo in-vitro culture box with the protective cover according to claim 5, wherein the longitudinal moving device comprises a ratchet arranged at the end of the fixed shell, a ratchet rack arranged on the drawer, a first elastic member connected with the ratchet rack, a restoring assembly connected with the first elastic member, a second elastic member arranged on the fixed shell, a toggle rack connected with the second elastic member, toggle teeth rotatably arranged on the drawer, and a first push rod arranged on the drawer.

8. The hu sheep embryo in-vitro culture box with the protective cover according to claim 7, wherein the restoring assembly comprises a sloping block connected with the first spring, a third elastic member connected with the sloping block, a third baffle connected with the third elastic member, a sliding block arranged between the third baffle and the sloping block, and a second push rod connected with the sliding block.