Beef cattle improved variety breeding device for animal husbandry

Abstract

The invention discloses a beef cattle improved variety breeding device for livestock breeding, and relates to the technical field of livestock breeding, the beef cattle improved variety breeding device for livestock breeding comprises a rack, an opening and closing fence is arranged on the rack, the device further comprises anti-collision assemblies symmetrically arranged on the two sides of the interior of the rack in an array mode in the length direction of the rack, and the anti-collision assemblies are used for controlling the upper half part of beef cattle; the anti-collision assembly comprises a buffer part arranged on the rack, main rubber plates attached to the two sides of the beef cattle are arranged at the ends of the buffer part, and side rubber plates are arranged on the two sides of the main rubber plates. The main rubber plate and the side rubber plate on the moving plate are gradually attached to the two sides of the body surface of the upper portion of the cow, when the cow extrudes one side, the main rubber plate and the side rubber plate on the other side can automatically reset to protect the cow, the body surface of the cow cannot be damaged due to collision with the fence, the workload of workers is reduced, and the working efficiency is improved. And the working efficiency of living body egg taking is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of livestock breeding, and more specifically, it relates to a fine breed reproduction device for beef cattle in livestock breeding. Background Art

[0002] The fine breed reproduction of beef cattle refers to selecting the most suitable bull for the cow or the most suitable cow for the bull within the cattle herd according to the breeding objectives of the cattle farm for mating to produce offspring with excellent genotypes.

[0003] Currently, the fine breed reproduction of beef cattle mainly selects suitable cow eggs and strong and meat-rich bull sperm through artificial insemination. Among them, the cow eggs are mainly obtained through the technical means of ovum pick-up from living animals. The existing ovum pick-up operation from living animals is to drive the estrus cows into a narrow fence, and through manual soothing, make the cows fit as closely as possible to both sides of the fence. Then, an ovum pick-up needle is inserted into the vagina of the cow, and through a camera, when appropriate, the ovum pick-up needle is inserted into the uterus of the cow for ovum pick-up from living animals. However, in this process, due to the insertion of the ovum pick-up needle into the cow's body, it will cause pain to the cow, which is likely to cause the cow to become restless and resist. During the resistance process, the two sides of the cow are likely to collide with the fence, causing the cow to be bruised, and the cow's legs will kick involuntarily, which is also likely to affect the ovum pick-up personnel to complete the ovum pick-up work.

[0004] Therefore, in order to solve the above technical problems, the present invention proposes a fine breed reproduction device for beef cattle in livestock breeding. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a fine breed reproduction device for beef cattle in livestock breeding, which realizes the function of protecting the cow from hitting the fence on both sides. The flexible fitting is easier to soothe the stressed cow. The anti-collision component with a buffering function makes the moving range of the cow smaller, reducing the injury suffered by the stressed cow when hitting the fence. At the same time, the legs of the cow are also buffered and limited to control, so that the cow will not make leg kicking actions, protecting the ovum pick-up personnel and also preventing leg injuries caused by the cow's kicking, which affects the subsequent livestock breeding of beef cattle.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A fine breed reproduction device for beef cattle in livestock breeding, including a frame, and an opening and closing fence is provided on the frame. It further includes:

[0007] Anti-collision components symmetrically arranged in an array along the length direction of the frame on both sides inside the frame, the anti-collision components are used to control the upper part of the beef cattle, the anti-collision components include buffer members provided on the frame, and main rubber plates that fit the two sides of the beef cattle are provided at the ends of the buffer members, and side rubber plates are provided on both sides of the main rubber plates;

[0008] A limiting component arranged below the anti-collision component, the limiting component is used to control the lower part of the beef cattle, the limiting component includes a U-shaped frame, and a number of telescopic rubber rollers are arranged in an array on the U-shaped frame, and the rubber rollers are used to adapt to the shape of the beef cattle's legs and complete the wrapping action;

[0009] A transmission component arranged between the anti-collision component and the limiting component, and the anti-collision component drives the limiting component through the transmission component to complete the wrapping and displacement action of the beef cattle's legs.

[0010] Preferably, fixing plates are symmetrically arranged on the frame, a number of air cylinders are arranged on the fixing plates, the output ends of the a number of air cylinders penetrate through the fixing plates and are commonly connected to a moving plate, the buffer is fixedly connected to the moving plate, and a first spring is arranged between the moving plate and the main rubber plate.

[0011] Preferably, the buffer includes an outer shell, the interior of the outer shell is divided into a liquid chamber and a gas chamber, a buffer liquid is arranged inside the liquid chamber, a buffer gas is arranged inside the gas chamber, a piston is connected to the end of the buffer, the output end of the piston is inside the outer shell and fits against the buffer liquid, and an exchange opening is arranged in communication between the liquid chamber and the gas chamber, and the buffer liquid enters the gas chamber through the exchange opening to compress the buffer gas.

[0012] Preferably, the transmission component includes an L-shaped rod, one end of the L-shaped rod is fixedly connected to the output end of the air cylinder, a transmission gear is arranged at the other end of the L-shaped rod, an installation beam is arranged on the frame, a fixed rack is fixedly installed at a position corresponding to the transmission gear on the installation beam, a transmission beam is arranged on the frame, a sliding rod is movably arranged on the transmission beam, the sliding rod is fixedly connected to the U-shaped frame, and a moving rack is fixedly installed at a position corresponding to the transmission gear at the lower end of the U-shaped frame.

[0013] Preferably, a limiting groove is opened at a position corresponding to the rubber roller inside the U-shaped frame, a buffer is arranged inside the limiting groove, a second spring is arranged on the buffer, a telescopic rod is arranged at the output end of the buffer, and the telescopic rod extends to the outside of the limiting groove and is fixedly connected to the non-rotating end of the rubber roller.

[0014] Preferably, torsion spring shafts are arranged on both sides of the main rubber plate, and the two side rubber plates are connected to the main rubber plate through the torsion spring shafts.

[0015] Preferably, the end of the buffer is rotatably connected to the main rubber plate through a ball bearing, an inclined angle is formed between the main rubber plate and the buffer through the ball bearing, and an inclined angle is formed between the main rubber plate and its two sides through the torsion spring shaft.

[0016] Preferably, the transverse ends of the U-shaped frame are fixedly connected to the sliding rod, and the sliding rod penetrates through the transmission beam and slides inside the transmission chain.

[0017] Preferably, the length of the movable rack is twice that of the fixed rack, and both the fixed rack and the movable rack are provided with teeth meshing with the transmission gear.

[0018] Preferably, there are four groups of the limiting components, which respectively correspond to the positions of the four leg joints of the lower part of the beef cattle.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, the cylinder is started to drive the moving plate to move, and the main rubber plate and the side rubber plate on the moving plate gradually fit the two sides of the upper part of the body surface of the female cow. When the female cow starts in vivo oocyte retrieval, the pain of the egg retrieval needle makes the female cow unconsciously hit and squeeze the main rubber plate and the side rubber plate on both sides. However, due to the buffer member and the first spring provided on the main rubber plate, the buffer effect of the buffer member will relieve the impact force of the female cow, convert the mechanical energy of the impact of the female cow into potential energy inside the buffer member for storage. When the female cow squeezes to one side, the main rubber plate and the side rubber plate on the other side will automatically reset to protect the female cow, so that the female cow will not cause body surface damage due to hitting the fence, reducing the workload of the staff and improving the working efficiency of in vivo oocyte retrieval.

[0021] 2. In the present invention, when the cylinder is started, the L-shaped rod will move along with the output end of the cylinder. The transmission gear on the L-shaped rod will roll on the fixed rack, and at the same time, the movable rack meshed with the transmission gear will be driven to move towards the inner side of the cow leg. When the rubber roller moves, it will touch the surface of the cow leg and be squeezed. At this time, the non-rotating end of the rubber roller will drive the telescopic rod to squeeze into the limiting groove, so that the telescopic rod is squeezed into the limiting groove. Since the second spring and the buffer member are provided inside the limiting groove, it will automatically reset when there is no pressure on the rubber roller, that is, several rubber rollers wrap the cow leg joint. The buffer of the buffer member makes the female cow unable to lift its leg when being stimulated, so as to protect the female cow from leg injury caused by kicking the fence. There is no need to treat the injured female cow, thereby reducing the breeding cost of the female cow. At the same time, it also protects the staff from being kicked, enabling the staff to more attentively complete the in vivo oocyte retrieval work and further improving the working efficiency of in vivo oocyte retrieval. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2Partial structural schematic diagram in the present invention;

[0025] Figure 3 is Figure 2 the enlarged schematic diagram of part A in

[0026] Figure 4 Structural schematic diagram of the anti-collision component in the present invention;

[0027] Figure 5 Internal sectional view of the buffer in the present invention;

[0028] Figure 6 is Figure 2 the enlarged schematic diagram of part B in

[0029] Figure 7 Another partial structural schematic diagram from a different perspective in the present invention;

[0030] Figure 8 is Figure 7 the enlarged schematic diagram of part C in

[0031] Figure 9 Internal sectional view of the limit component in the present invention.

[0032] 1. Frame; 2. Openable fence; 3. Anti-collision component; 301. Cylinder; 302. Fixed plate; 303. Moving plate; 304. Buffer; 3041. Outer shell; 3042. Piston; 3043. Liquid chamber; 3044. Gas chamber; 3045. Exchange opening; 305. Main rubber plate; 306. Side rubber plate; 307. Torsion spring shaft; 308. First spring; 4. Transmission component; 401. L-shaped rod; 402. Transmission gear; 403. Fixed rack; 404. Moving rack; 405. Slide bar; 406. Transmission beam; 407. Installation beam; 5. Limit component; 501. U-shaped frame; 502. Expansion rod; 503. Rubber roller; 504. Second spring; 505. Limit groove. Detailed implementation manners

[0033] Example:

[0034] As Figures 1 - 9 shown, the present invention provides a livestock beef cattle improved breed reproduction device, including a frame 1, an openable fence 2 is arranged on the frame 1, and further includes:

[0035] The anti-collision components 3 are symmetrically arranged on both sides inside the frame 1 along the length direction of the frame 1. The anti-collision components 3 are used to control the upper part of beef cattle. The anti-collision components 3 include buffer members 304 arranged on the frame 1. At the end of the buffer member 304, there are main rubber plates 305 that fit on both sides of the beef cattle. On both sides of the main rubber plate 305, there are side rubber plates 306. On both sides of the main rubber plate 305, there are torsion spring shafts 307. The two side rubber plates 306 are connected to the main rubber plate 305 through the torsion spring shafts 307. The end of the buffer member 304 is rotatably connected to the main rubber plate 305 through a ball bearing. An inclined angle is formed between the main rubber plate 305 and the buffer member 304 through the ball bearing. An inclined angle is formed between the main rubber plate 305 and its two sides through the torsion spring shafts 307;

[0036] On the frame 1, there are symmetrically arranged fixed plates 302. On the fixed plates 302, there are several cylinders 301. The output ends of the several cylinders 301 penetrate through the fixed plates 302 and are commonly connected to a moving plate 303. It should be noted that the cylinders 301 are fixed externally. The output ends of the cylinders 301 penetrate through the fixed plates 302 and are connected to the moving plate 303. That is, the output ends of the cylinders 301 can drive the moving plate 303 to move forward during operation. The buffer member 304 is fixedly connected to the moving plate 303. There is a first spring 308 between the moving plate 303 and the main rubber plate 305;

[0037] It should be noted that since the upper half of the female cow is not flat, an inclined angle can be generated between the main rubber plate 305 and the end of the buffer member 304 through the ball bearing. And through the rotational elastic force of the torsion spring shafts 307, the two side rubber plates 306 can automatically fit the curved skin of the female cow when contacting the body surface of the female cow. At the same time, the materials of the main rubber plate 305 and the side rubber plates 306 are both flexible rubber. Even if the female cow has a stress reaction and squeezes the main rubber plate 305 and the side rubber plates 306 when fitting the body surface of the female cow, it will not cause injury to the body surface of the female cow;

[0038] The buffer member 304 includes an outer shell 3041. The interior of the outer shell 3041 is divided into a liquid chamber 3043 and a gas chamber 3044. Inside the liquid chamber 3043, there is a buffer liquid. The buffer liquid can be a flowing liquid such as hydraulic oil. Inside the gas chamber 3044, there is a buffer gas. The buffer gas can be an inert and easily compressible gas such as nitrogen. The end of the buffer member 304 is connected to a piston 3042. The output end of the piston 3042 is inside the outer shell 3041 and fits the buffer liquid. There is an exchange opening 3045 communicating between the liquid chamber 3043 and the gas chamber 3044. The buffer liquid enters the gas chamber 3044 through the exchange opening 3045 to compress the buffer gas;

[0039] It should be noted that when the piston 3042 is squeezed, it will move towards the inside of the liquid chamber 3043, squeezing the buffer liquid from the exchange opening 3045 into the gas chamber 3044 to squeeze the buffer gas. Since the buffer gas is compressible, the movement of the piston 3042 is restricted when it is squeezed, and the first spring 308 outside the buffer member 304 plays a buffering role for the main rubber plate 305, so that the main rubber plate 305 will not shrink immediately when it is impacted and squeezed;

[0040] The cylinder 301 is started to drive the moving plate 303 to move. The main rubber plate 305 and the side rubber plate 306 on the moving plate 303 gradually fit the two sides of the upper part of the cow's body surface. When the cow starts in vivo oocyte retrieval, the pain of the egg retrieval needle will cause the cow to unconsciously impact and squeeze the main rubber plate 305 and the side rubber plate 306 on both sides. However, since the buffer member 304 and the first spring 308 are provided on the main rubber plate 305, the buffering effect of the buffer member 304 will unload the impact force of the cow, converting the mechanical energy of the cow's impact into potential energy inside the buffer member 304 for storage. When the cow squeezes to one side, the main rubber plate 305 and the side rubber plate 306 on the other side will automatically reset to protect the cow, so that the cow will not have body surface injuries due to hitting the fence, reducing the workload of the staff and improving the work efficiency of in vivo oocyte retrieval;

[0041] The transmission component 4 is arranged between the anti-collision component 3 and the limit component 5. The anti-collision component 3 drives the limit component 5 through the transmission component 4 to complete the wrapping movement of the beef cattle's legs. The transmission component 4 includes an L-shaped rod 401. One end of the L-shaped rod 401 is fixedly connected to the output end of the cylinder 301. The other end of the L-shaped rod 401 is provided with a transmission gear 402. An installation beam 407 is provided on the frame 1, and a fixed rack 403 is fixedly installed at a position corresponding to the transmission gear 402 on the installation beam 407. A transmission beam 406 is provided on the frame 1, and a sliding rod 405 is movably arranged on the transmission beam 406. The sliding rod 405 is fixedly connected to the U-shaped frame 501. The horizontal ends of the U-shaped frame 501 are fixedly connected to the sliding rod 405. The sliding rod 405 penetrates the transmission beam 406 and slides inside the transmission chain. A moving rack 404 is fixedly installed at a position corresponding to the transmission gear 402 at the lower end of the U-shaped frame 501. The length of the moving rack 404 is twice that of the fixed rack 403. Tooth teeth meshing with the transmission gear 402 are provided on both the fixed rack 403 and the moving rack 404;

[0042] It should be noted that when the transmission gear 402 moves on the fixed rack 403, the distance that drives the moving rack 404 to move horizontally is twice the distance that the transmission gear 402 moves on the fixed rack 403. The principle is equivalent to the displacement of the moving rack 404 relative to the transmission gear 402 plus the displacement of the transmission gear 402 on the fixed rack 403 being equal to the direct moving distance of the moving rack 404;

[0043] A limiting component 5 is arranged below the anti-collision component 3. The limiting component 5 is used to control the lower part of the beef cattle. There are four groups of limiting components 5 corresponding to the positions of the four leg joints of the lower part of the beef cattle. It should be noted that since the distance between the cow legs is relatively far from the distance between the upper half and the fence, and the limiting component 5 needs to be inserted between the cow legs to prevent the leg joints from bending and exerting force, the limiting component 5 needs to move a longer distance relative to the anti-collision component 3 through the transmission component 4. The limiting component 5 includes a U-shaped frame 501. A number of telescopic rubber rollers 503 are arranged in an array on the U-shaped frame 501. The rubber rollers 503 are used to adapt to the shape of the beef cattle's legs and complete the wrapping action. A limiting groove 505 is opened at the position corresponding to the rubber roller 503 inside the U-shaped frame 501. A buffer 304 is arranged inside the limiting groove 505. A second spring 504 is arranged on the buffer 304. The output end of the buffer 304 is provided with a telescopic rod 502. The buffer 304 inside the limiting groove 505 is a small buffer 304. The telescopic rod 502 extends outside the limiting groove 505 and is fixedly connected to the non-rotating end of the rubber roller 503;

[0044] When the air cylinder 301 starts, the L-shaped rod 401 will move along with the output end of the air cylinder 301. The transmission gear 402 on the L-shaped rod 401 will roll on the fixed rack 403. At the same time, the moving rack 404 engaged with the transmission gear 402 will be driven to move towards the inner side of the cow leg. When the rubber roller 503 moves, it will touch the surface of the cow leg and be squeezed. At this time, the non-rotating end of the rubber roller 503 will drive the telescopic rod 502 to be squeezed into the limiting groove 505, so that the telescopic rod 502 is squeezed into the limiting groove 505. Since the second spring 504 and the buffer 304 are arranged inside the limiting groove 505, when there is no pressure on the rubber roller 503, it will automatically reset, that is, a number of rubber rollers 503 will wrap the leg joints of the cow. The unloading of the buffer 304 makes the female cow unable to lift its leg when stimulated, thus protecting the female cow from leg injuries caused by kicking the fence. There is no need to treat the injured female cow, which reduces the breeding cost of the female cow. At the same time, it also protects the staff from being kicked, enabling the staff to complete the in vivo oocyte retrieval work more attentively, and further improving the work efficiency of in vivo oocyte retrieval.

[0045] Working principle: The cylinder 301 is started to drive the moving plate 303 to move. The main rubber plate 305 and the side rubber plate 306 on the moving plate 303 gradually fit the two sides of the upper part of the cow's body surface. When the cow starts in vivo oocyte retrieval, the pain of the egg retrieval needle makes the cow unconsciously impact and squeeze the main rubber plate 305 and the side rubber plate 306 on both sides. However, since the buffer member 304 and the first spring 308 are provided on the main rubber plate 305, the buffering effect of the buffer member 304 will unload the impact force of the cow, converting the mechanical energy of the cow's impact into potential energy inside the buffer member 304 for storage. When the cow squeezes to one side, the main rubber plate 305 and the side rubber plate 306 on the other side will automatically reset to protect the cow.

[0046] At the same time, when the cylinder 301 starts, the L-shaped rod 401 will move along with the output end of the cylinder 301. The transmission gear 402 on the L-shaped rod 401 will roll on the fixed rack 403. At the same time, the moving rack 404 engaged with the transmission gear 402 will be driven to move towards the inner side of the cow's leg. When the rubber roller 503 moves, it will touch the surface of the cow's leg and be squeezed. At this time, the non-rotating end of the rubber roller 503 will drive the telescopic rod 502 to be squeezed into the limiting groove 505, so that the telescopic rod 502 is squeezed into the limiting groove 505. Since the second spring 504 and the buffer member 304 are provided inside the limiting groove 505, it will automatically reset when there is no pressure on the rubber roller 503, that is, several rubber rollers 503 wrap the cow's leg joint. The buffering of the buffer member 304 prevents the cow from lifting its leg when stimulated, thereby protecting the cow from leg injuries caused by kicking the fence.

[0047] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in any form; any ordinary technician in the industry can smoothly implement the present invention according to the description in the accompanying drawings and the above description; however, any minor changes, modifications, and equivalent changes made by those skilled in the art within the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications, and evolutions made to the above embodiments based on the essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A fine breed breeding device for beef cattle in animal husbandry, comprising a frame (1), wherein an opening and closing fence (2) is provided on the frame (1), and it is characterized in that, It also includes: Anti-collision components (3) symmetrically arranged in an array along the length direction of the frame (1) on both sides inside the frame (1). The anti-collision components (3) are used to control the upper part of the beef cattle. The anti-collision components (3) include buffer members (304) arranged on the frame (1). The end of the buffer member (304) is provided with main rubber plates (305) that fit the two sides of the beef cattle. Side rubber plates (306) are provided on both sides of the main rubber plates (305); A limiting component (5) arranged below the anti-collision component (3). The limiting component (5) is used to control the lower part of the beef cattle. The limiting component (5) includes a U-shaped frame (501). A number of telescopic rubber rollers (503) are arranged in an array on the U-shaped frame (501). The rubber rollers (503) are used to adapt to the shape of the beef cattle's legs and complete the wrapping action; A transmission component (4) arranged between the anti-collision component (3) and the limiting component (5). The anti-collision component (3) drives the limiting component (5) through the transmission component (4) to complete the wrapping and displacement action of the beef cattle's legs.

2. The improved breeding device for beef cattle used in animal husbandry according to claim 1, characterized in that: Fixed plates (302) are symmetrically arranged on the frame (1). A number of cylinders (301) are arranged on the fixed plates (302). The output ends of the cylinders (301) penetrate through the fixed plates (302) and are commonly connected to a moving plate (303). The buffer member (304) is fixedly connected to the moving plate (303). A first spring (308) is arranged between the moving plate (303) and the main rubber plate (305).

3. The improved beef cattle breeding device for livestock according to claim 2, wherein: The buffer member (304) includes an outer shell (3041). The interior of the outer shell (3041) is divided into a liquid chamber (3043) and a gas chamber (3044). A buffer liquid is arranged inside the liquid chamber (3043). A buffer gas is arranged inside the gas chamber (3044). The end of the buffer member (304) is connected to a piston (3042). The output end of the piston (3042) is inside the outer shell (3041) and fits the buffer liquid. The liquid chamber (3043) and the gas chamber (3044) are communicated through an exchange opening (3045) provided. The buffer liquid enters the gas chamber (3044) through the exchange opening (3045) to compress the buffer gas.

4. The breeding device for fine breed beef cattle for livestock according to claim 1, wherein: The transmission component (4) includes an L-shaped rod (401). One end of the L-shaped rod (401) is fixedly connected to the output end of the cylinder (301). The other end of the L-shaped rod (401) is provided with a transmission gear (402). An installation beam (407) is arranged on the frame (1). A fixed rack (403) is fixedly installed at a position corresponding to the transmission gear (402) on the installation beam (407). A transmission beam (406) is arranged on the frame (1). A sliding rod (405) is movably arranged on the transmission beam (406). The sliding rod (405) is fixedly connected to the U-shaped frame (501). A moving rack (404) is fixedly installed at a position corresponding to the transmission gear (402) at the lower end of the U-shaped frame (501).

5. The improved beef cattle breeding device for livestock according to claim 4, wherein: A limiting groove (505) is formed inside the U-shaped frame (501) corresponding to the position of the rubber roller (503). A buffer member (304) is arranged inside the limiting groove (505). A second spring (504) is arranged on the buffer member (304). An expansion rod (502) is arranged at the output end of the buffer member (304). The expansion rod (502) extends outside the limiting groove (505) and is fixedly connected to the non-rotating end of the rubber roller (503).

6. The breeding device for improved beef cattle breeds for livestock according to claim 2, characterized in that: Torsion spring shafts (307) are arranged on both sides of the main rubber plate (305). The two side rubber plates (306) are connected to the main rubber plate (305) through the torsion spring shafts (307).

7. A breeding device for fine breeds of beef cattle for livestock husbandry according to claim 2, characterized in that: The end of the buffer member (304) is rotatably connected to the main rubber plate (305) through a ball bearing. An inclined angle is formed between the main rubber plate (305) and the buffer member (304) through the ball bearing. An inclined angle is formed between the main rubber plate (305) and its two sides through the torsion spring shafts (307).

8. A breeding device for fine breeds of beef cattle for livestock husbandry according to claim 4, characterized in that: The transverse two ends of the U-shaped frame (501) are fixedly connected to the sliding rods (405). The sliding rods (405) penetrate through the transmission beam (406) and slide inside the transmission chain.

9. The breeding device for fine breed beef cattle used in animal husbandry according to claim 4, wherein: The length of the moving rack (404) is twice that of the fixed rack (403). Teeth meshing with the transmission gear (402) are arranged on both the fixed rack (403) and the moving rack (404).

10. A fine breed reproduction device for beef cattle in animal husbandry according to claim 5, characterized in that: There are four groups of the limiting assemblies (5), which respectively correspond to the positions of the four beef cattle leg joints at the lower part of the beef cattle.

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