Cow rear leg fixing device for artificial fertilization

Abstract

The invention provides a cattle rear leg fixing device for artificial fertilization, which belongs to the technical field of animal husbandry auxiliary instruments and comprises a support, a slider, a telescopic support component, a semicircular fixing plate, a first limiting component, a second limiting component and a third limiting component. The sliding block is installed on the inner wall of the support and can slide up and down along the inner wall of the support, the number of the semicircular fixing plates is two, one end of the telescopic supporting assembly is connected with the sliding block and can horizontally rotate along the sliding block, and the other end of the telescopic supporting assembly is connected with the two semicircular fixing plates in a hinged mode. Compared with the prior art, the two sets of semicircular fixing plates can be conveniently adjusted to the position where the rear legs of the cattle are located, meanwhile, after the two sets of semicircular fixing plates are adjusted to the position where the rear legs of the cattle are located and the rear legs of the cattle are fixed, stable limiting of the two sets of semicircular fixing plates can be achieved, and therefore the fixing effect of the rear legs of the cattle is improved; and smooth artificial insemination is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of animal husbandry auxiliary equipment, in particular to a cattle hind leg fixing device for artificial insemination. Background Art

[0002] Artificial insemination is one of the main technologies for cattle breeding at present. During artificial insemination, the inseminator stands behind the cow, grasps the rectum with one hand, and holds the insemination gun with the other hand to slowly inject semen into the cow's uterus from the cow's vagina.

[0003] At present, when artificial insemination is performed on a cow, in order to ensure the smooth progress of insemination, the position of the cow's hind legs needs to be fixed. The existing means of fixing the cow's hind legs are mostly to pull the cow to one side of a fixing frame and use a rope or clamp on the fixing frame to fix the cow's hind legs. However, when the cow is pulled to one side of the fixing frame, the cow's hind legs are often far away from the position of the rope and the clamp. Therefore, it is necessary to drive the cow many times so that the cow can adjust its hind legs to the front of the rope and the clamp, and then the cow's hind legs can be fixed with the help of the rope and the clamp. This method of fixing the cow's hind legs is relatively cumbersome and requires a lot of manpower. In addition, the cow is prone to madness after being repeatedly driven, which further affects the smooth progress of insemination. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a cattle hind leg fixing device for artificial insemination.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A cattle hind leg fixing device for artificial insemination comprises a bracket, a slider, a telescopic support assembly, a semicircular fixing plate, a first limiting assembly, a second limiting assembly and a third limiting assembly. The slider is mounted on the inner wall of the bracket and can slide up and down along the inner wall of the bracket. The semicircular fixing plates are provided with two groups, One end of the telescopic support assembly is connected to the slider and can rotate horizontally along the slider, and the other end is hingedly connected to the two groups of semicircular fixing plates. The first limiting assembly and the second limiting assembly are arranged inside the sliding block, and the third limiting assembly is arranged inside the telescopic supporting assembly. When the two groups of semicircular fixing plates rotate relative to each other to fix the cow's hind legs, the first limiting assembly is used to limit the sliding of the slider, the second limiting assembly is used to limit the rotation of the telescopic support assembly, and the third limiting assembly is used to limit the telescopic extension of the telescopic support assembly.

[0006] As a further improvement of the present invention: the telescopic support assembly includes a telescopic rod and a telescopic sleeve, One end of the telescopic rod is fixedly connected to a rotating column, and the other end extends into the interior of the telescopic sleeve and cooperates with the telescopic sleeve for telescopic operation. The rotating column is rotatably embedded in the slider, and two groups of semicircular fixed plates are hingedly arranged at one end of the telescopic sleeve away from the telescopic rod.

[0007] As a further improvement of the present invention: a first conductive plate and a second conductive plate are arranged inside the telescopic sleeve, the first conductive plate is fixedly connected to the inner wall of the telescopic sleeve, the second conductive plate is movably arranged on one side of the first conductive plate, the second conductive plate is connected to an external power supply through a wire, a push rod is fixedly arranged on one side of the second conductive plate away from the first conductive plate, and one end of the push rod away from the second conductive plate extends to the outside of the telescopic sleeve, A slideway is arranged inside the telescopic rod along the axial direction, a sliding pin is slidably arranged inside the slideway, a permanent magnet is arranged at one end of the sliding pin, and the other end extends into the inside of the rotating column, an electromagnet is also arranged inside the slideway, and the electromagnet is connected to the first conductive plate through a wire, and an inner cavity is opened inside the slider, The second limiting assembly includes a limiting plate, The limiting plate is arranged inside the inner cavity, and a curved surface is arranged on a side of the limiting plate facing the rotating column, and a plurality of third limiting grooves are formed on the curved surface.

[0008] As a further improvement of the present invention: a vertically distributed slide rail is fixedly provided on the inner wall of the bracket, the slider is slidably matched with the slide rail, and a plurality of first limiting grooves are provided on a side of the slide rail away from the bracket. The first limiting assembly includes a first limiting pin, One end of the first limiting pin extends to the inner side of the slider, and the other end extends into the inner cavity and is connected to the limiting plate.

[0009] As a further improvement of the present invention: the inner wall of the telescopic sleeve is provided with a plurality of second limiting grooves along the length direction, and the side wall of the telescopic rod is provided with a plug hole along the radial direction. The third limiting assembly includes a second limiting pin, The side wall of the sliding pin is provided with an oblique groove, one end of the second limiting pin is in a wedge-shaped structure, one end of the second limiting pin in the wedge-shaped structure extends into the oblique groove, and the other end extends into the insertion hole.

[0010] As a further improvement of the present invention: a first elastic member for providing elastic tension to the second conductive plate is arranged inside the telescopic sleeve. A second elastic member for providing elastic support to the limiting plate is arranged inside the inner cavity.

[0011] As a further improvement of the present invention: the first elastic member and the second elastic member are springs or metal springs.

[0012] Compared with the prior art, the present invention has the following beneficial effects: In the embodiment of the present invention, when artificial insemination is performed on a cow, the cow can be driven to the inside of the bracket, and then the slider is slid up and down along the inner wall of the bracket, and the slider drives the telescopic support assembly and the two groups of semicircular fixing plates to move up and down, so as to adjust the two groups of semicircular fixing plates to an appropriate height, and then the telescopic support assembly is pushed along the slider, and the support assembly adaptively rotates horizontally compared to the slider, thereby driving the two groups of semicircular fixing plates to rotate horizontally, so as to adjust the two groups of semicircular fixing plates to an appropriate angle, and then the telescopic action of the telescopic support assembly is used to drive the two groups of semicircular fixing plates to telescope, so as to adjust the two groups of semicircular fixing plates to the outside of the cow's hind legs, and finally the two groups of semicircular fixing plates are relatively rotated, the two groups of semicircular fixing plates are clamped on the outside of the cow's hind legs, and then the bolt and nut assembly is used to fix the two groups of semicircular fixing plates, so as to achieve the fixation of the cow's hind legs. After the cow's hind legs are fixed, artificial insemination is performed on the cow; when the two groups of semicircular fixing plates rotate relative to each other, the first limiting component limits the sliding of the slider, the second limiting component limits the rotation of the telescopic support component, and the third limiting component limits the telescopic support component. In this way, the two groups of semicircular fixing plates can be stably in the current position, thereby fixing and limiting the cow's hind legs, preventing the cow's hind legs from moving around during insemination, and ensuring the smooth progress of artificial insemination. Compared with the prior art, the two groups of semicircular fixing plates can be conveniently adjusted to the position of the cow's hind legs. At the same time, after the two groups of semicircular fixing plates are adjusted to the position of the cow's hind legs and the cow's hind legs are fixed, the stable limiting of the two groups of semicircular fixing plates can be achieved, thereby improving the fixing effect of the cow's hind legs and ensuring the smooth progress of artificial insemination. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of a cattle hind leg fixing device used for artificial insemination; Figure 2 A schematic diagram of the structure of a telescopic support assembly in a cattle hind leg fixing device for artificial insemination Figure 1 ; Figure 3 A schematic diagram of the structure of a telescopic support assembly in a cattle hind leg fixing device for artificial insemination Figure 2 ; Figure 4 for Figure 2 A magnified schematic diagram of the middle A area; Figure 5 for Figure 3A magnified schematic diagram of the middle B area; Figure 6 for Figure 3 Enlarged schematic diagram of the middle C area; In the figure: 10-bracket, 101-slide rail, 102-first limiting groove, 20-slider, 201-inner cavity, 30-telescopic support assembly, 301-rotating column, 302-telescopic rod, 303-telescopic sleeve, 304-sliding pin, 305-electromagnet, 306-first conductive plate, 307-second conductive plate, 308-first elastic member, 309-push rod, 310-second limiting groove, 311-oblique groove, 40-semicircular fixing plate, 50-first limiting assembly, 60-second limiting assembly, 601-limiting plate, 602-third limiting groove, 70-third limiting assembly. DETAILED DESCRIPTION

[0014] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0015] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0016] See also Figure 1 , Figure 2 as well as Figure 3 The present embodiment provides a cattle hind leg fixing device for artificial insemination, including a bracket 10, a slider 20, a telescopic support assembly 30, a semicircular fixing plate 40, a first limiting assembly 50, a second limiting assembly 60 and a third limiting assembly 70. The slider 20 is installed on the inner wall of the bracket 10 and can slide up and down along the inner wall of the bracket 10. The semicircular fixing plate 40 is provided with two groups. One end of the telescopic support assembly 30 is connected to the slider 20 and can rotate horizontally along the slider 20, and the other end is connected to the two groups of semicircular fixing plates. The fixed plate 40 is hingedly connected, the first limiting assembly 50 and the second limiting assembly 60 are arranged inside the slider 20, and the third limiting assembly 70 is arranged inside the telescopic support assembly 30. When the two groups of the semicircular fixed plates 40 rotate relative to each other to fix the cow's hind legs, the first limiting assembly 50 is used to limit the sliding of the slider 20, the second limiting assembly 60 is used to limit the rotation of the telescopic support assembly 30, and the third limiting assembly 70 is used to limit the extension and retraction of the telescopic support assembly 30.

[0017] When artificial insemination is performed on a cow, the cow can be driven to the inside of the bracket 10, and then the slider 20 is slid up and down along the inner wall of the bracket 10, and the slider 20 drives the telescopic support assembly 30 and the two groups of semicircular fixing plates 40 to move up and down, so as to adjust the two groups of semicircular fixing plates 40 to a proper height, and then the telescopic support assembly 30 is pushed along the slider 20, and the support assembly 30 adaptively rotates horizontally compared with the slider 20, thereby driving the two groups of semicircular fixing plates 40 to rotate horizontally, so as to adjust the two groups of semicircular fixing plates 40 to a proper angle, and then the telescopic action of the telescopic support assembly 30 is used to drive the two groups of semicircular fixing plates 40 to telescope, so as to adjust the two groups of semicircular fixing plates 40 to the outside of the cow's hind legs, and finally the two groups of semicircular fixing plates 40 are relatively rotated. The circular fixing plate 40 and the two groups of semicircular fixing plates 40 are clamped on the outside of the cow's hind legs, and then the bolt and nut assemblies are used to fix the two groups of semicircular fixing plates 40, so as to achieve the fixation of the cow's hind legs. After the cow's hind legs are fixed, artificial insemination is performed on the cow; when the two groups of semicircular fixing plates 40 rotate relative to each other, the first limiting assembly 50 limits the sliding of the slider 20, the second limiting assembly 60 limits the rotation of the telescopic support assembly 30, and the third limiting assembly 70 limits the telescopic support assembly 30. In this way, the two groups of semicircular fixing plates 40 can be stably in the current position, thereby fixing and limiting the cow's hind legs, preventing the cow's hind legs from moving around during insemination, and ensuring the smooth progress of artificial insemination.

[0018] See also Figure 1 and Figure 3 In one embodiment, the telescopic support assembly 30 includes a telescopic rod 302 and a telescopic sleeve 303, one end of the telescopic rod 302 is fixedly connected to a rotating column 301, and the other end extends into the interior of the telescopic sleeve 303 and telescopically cooperates with the telescopic sleeve 303, the rotating column 301 is rotatably embedded in the slider 20, and the two groups of semicircular fixed plates 40 are hingedly arranged at one end of the telescopic sleeve 303 away from the telescopic rod 302.

[0019] By sliding the slider 20 up and down along the inner wall of the bracket 10, the rotating column 301 and the slider 20 rotate, and the telescopic cooperation between the telescopic rod 302 and the telescopic sleeve 303, the two sets of semicircular fixing plates 40 can be conveniently adjusted to the outside of the cow's hind legs, thereby achieving rapid fixation of the cow's hind legs.

[0020] See also Figure 3 as well as Figure 5In one embodiment, a first conductive plate 306 and a second conductive plate 307 are disposed inside the telescopic sleeve 303. The first conductive plate 306 is fixedly connected to the inner wall of the telescopic sleeve 303. The second conductive plate 307 is movably disposed on one side of the first conductive plate 306. The second conductive plate 307 is connected to an external power supply (not shown in the figure) through a wire. A push rod 309 is fixedly disposed on one side of the second conductive plate 307 away from the first conductive plate 306. One end of the push rod 309 away from the second conductive plate 307 extends to the outside of the telescopic sleeve 303. The inside of the telescopic rod 302 is along the axis. A slide is provided, and a sliding pin 304 is slidably provided inside the slide. A permanent magnet (not shown in the figure) is provided at one end of the sliding pin 304, and the other end extends to the inside of the rotating column 301. An electromagnet 305 is also provided inside the slide, and the electromagnet 305 is connected to the first conductive plate 306 through a wire. An inner cavity 201 is provided inside the slider 201, and the second limiting component 60 includes a limiting plate 601, and the limiting plate 601 is provided inside the inner cavity 201. The limiting plate 601 is provided with an arc surface on the side facing the rotating column 301, and a plurality of third limiting grooves 602 are provided on the arc surface.

[0021] When the two groups of semicircular fixing plates 40 are adjusted to the outside of the cow's hind legs, the two groups of semicircular fixing plates 40 are rotated so that the two groups of semicircular fixing plates 40 rotate relative to each other, and then clamp the outside of the cow's hind legs. When the two groups of semicircular fixing plates 40 rotate relative to each other, the side walls of the two groups of semicircular fixing plates 40 act on the push rod 309, and then push the push rod 309 so that the push rod 309 moves toward the inside of the telescopic sleeve 303. The push rod 309 drives the second conductive plate 307 to approach the first conductive plate 306. When the second conductive plate 307 contacts the first conductive plate 306, the external power supply can be connected through the second conductive plate 307 and the first conductive plate 306. The plate 306 supplies power to the electromagnet 305, which generates magnetism and produces magnetic repulsion with the permanent magnet, thereby pushing the sliding pin 304 to slide along the inside of the slideway. When the sliding pin 304 slides, one end of the sliding pin 304 penetrates the rotating column 301 and extends into the inner cavity 201, thereby being inserted into a third limiting groove 602 on the arc-shaped surface of one side of the limiting plate 601, thereby realizing the rotation restriction of the rotating column 301. When the rotation of the rotating column 301 is restricted, the telescopic rod 302 and the telescopic sleeve 303 cannot rotate horizontally compared to the slider 30, thereby realizing the horizontal rotation restriction of the two sets of semicircular fixed plates 40.

[0022] See also Figure 1 , Figure 4 as well as Figure 5In one embodiment, a vertically distributed slide rail 101 is fixedly provided on the inner wall of the bracket 10, and the slider 20 slides in cooperation with the slide rail 101. A plurality of first limiting grooves 102 are provided on the side of the slide rail 101 away from the bracket 10. The first limiting assembly 50 includes a first limiting pin, one end of which extends to the inner side of the slider 20, and the other end extends to the interior of the inner cavity 201 and is connected to the limiting plate 601.

[0023] When the sliding pin 304 is pushed to slide along the inside of the slideway by the magnetic repulsive force between the electromagnet 305 and the permanent magnet, one end of the sliding pin 304 penetrates the rotation 301 and extends into the inner cavity 201, thereby being inserted into a third limiting groove 602 to achieve rotation restriction of the rotation 301. When one end of the sliding pin 304 is inserted into the third limiting groove 602, it can push the limiting plate 601 to move the limiting plate 601 deeper into the inner cavity 201. When the limiting plate 601 moves, it drives the first limiting pin to move. When the first limiting pin moves, one end of the first limiting pin is inserted into a first limiting groove 102, thereby restricting the sliding of the slider 20.

[0024] See also Figure 6 In one embodiment, the inner wall of the telescopic sleeve 30 is provided with a plurality of second limit grooves 310 along the length direction, the side wall of the telescopic rod 302 is provided with a socket along the radial direction, the third limit assembly 70 includes a second limit pin, and the side wall of the sliding pin 304 is provided with an oblique groove 311, one end of the second limit pin is a wedge-shaped structure, one end of the second limit pin with a wedge-shaped structure extends into the inside of the oblique groove 311, and the other end extends into the inside of the socket.

[0025] When the two groups of semicircular fixing plates 40 rotate relative to each other and drive the sliding pin 304 to slide along the inside of the slideway, the inclined groove 311 can push one end of the second limit pin into a wedge-shaped structure, thereby causing the second limit pin to move along the insertion hole toward the outside of the telescopic rod 302. When the second limit pin moves, the other end thereof can be inserted into a second limit groove 310 on the inner wall of the telescopic sleeve 303, thereby realizing the telescopic limitation between the telescopic rod 302 and the telescopic sleeve 303.

[0026] See also Figure 3 In one embodiment, a first elastic member 308 for providing elastic tension to the second conductive plate 307 is disposed inside the telescopic sleeve 303, and a second elastic member (not shown in the figure) for providing elastic support to the limiting plate 601 is disposed inside the inner cavity 201.

[0027] After the artificial insemination of the cow is completed, the fixing state between the two groups of semicircular fixing plates 40 can be released, and then the two groups of semicircular fixing plates 40 are rotated in the opposite direction, and the two groups of semicircular fixing plates 40 are moved away from each other. At this time, the first elastic member 308 pulls the second conductive plate 307 to separate the second conductive plate 307 from the first conductive plate 306, and the electromagnet 305 is powered off, and the repulsive force on the permanent magnet disappears. At this time, the second elastic member pushes the limiting plate 601 to move the limiting plate 601 in the opposite direction along the inner cavity 201, thereby taking one end of the first limiting pin away from the current first limiting groove 102, so that The slider 20 can slide up and down along the slide rail 101 again, and the limit plate 601 pushes the slide pin 304 when it moves in the reverse direction, so that the slide pin 304 slides in the reverse direction along the inside of the slide rail. When the slide pin 304 slides in the reverse direction, one end of the slide pin 304 is re-entered into the rotating column, so that the rotating column 301 can rotate relative to the slider 20 again. When the slide pin 304 slides in the reverse direction, one end of the second limit pin with a wedge-shaped structure can be reinserted into the inclined groove 311, and the other end of the second limit pin is removed from the current second limit groove 310, so that the telescopic rod 302 and the telescopic sleeve 303 can be telescoped again.

[0028] In one embodiment, the first elastic member 308 and the second elastic member may be springs or metal springs, which are not limited herein.

[0029] In the embodiment of the present invention, when artificial insemination is performed on a cow, the cow can be driven to the inside of the bracket 10, and then the slider 20 is slid up and down along the inner wall of the bracket 10, and the slider 20 drives the telescopic support assembly 30 and the two groups of semicircular fixing plates 40 to move up and down, so as to adjust the two groups of semicircular fixing plates 40 to an appropriate height, and then the telescopic support assembly 30 is pushed along the slider 20, and the support assembly 30 adaptively rotates horizontally compared to the slider 20, thereby driving the two groups of semicircular fixing plates 40 to rotate horizontally, so as to adjust the two groups of semicircular fixing plates 40 to an appropriate angle, and then the telescopic action of the telescopic support assembly 30 is used to drive the two groups of semicircular fixing plates 40 to telescope, so as to adjust the two groups of semicircular fixing plates 40 to the outside of the cow's hind legs, and finally the two groups of semicircular fixing plates 40 are relatively rotated, and the two groups of semicircular fixing plates 40 are clamped on the outside of the cow's hind legs, and then the bolt and nut assembly is used to fix the two groups of semicircular fixing plates 40, so as to achieve the desired effect. The hind legs of the cow are fixed. After the hind legs of the cow are fixed, artificial insemination is performed on the cow. When the two groups of semicircular fixing plates 40 rotate relative to each other, the first limiting assembly 50 limits the sliding of the slider 20, the second limiting assembly 60 limits the rotation of the telescopic support assembly 30, and the third limiting assembly 70 limits the telescopic support assembly 30. In this way, the two groups of semicircular fixing plates 40 can be stably in the current position, thereby fixing and limiting the hind legs of the cow, preventing the hind legs of the cow from moving around during insemination, and ensuring the smooth progress of artificial insemination. Compared with the prior art, the two groups of semicircular fixing plates 40 can be conveniently adjusted to the position of the hind legs of the cow. At the same time, after the two groups of semicircular fixing plates 40 are adjusted to the position of the hind legs of the cow and the hind legs of the cow are fixed, the stable limiting of the two groups of semicircular fixing plates 40 can be achieved, thereby improving the fixing effect of the hind legs of the cow and ensuring the smooth progress of artificial insemination.

[0030] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A cattle hind leg fixing device for artificial insemination, characterized in that: It includes a bracket, a slider, a telescopic support component, a semicircular fixing plate, a first limiting component, a second limiting component and a third limiting component. The slider is mounted on the inner wall of the bracket and can slide up and down along the inner wall of the bracket. The semicircular fixing plates are provided with two groups, One end of the telescopic support assembly is connected to the slider and can rotate horizontally along the slider, and the other end is hingedly connected to the two groups of semicircular fixing plates. The first limiting assembly and the second limiting assembly are arranged inside the sliding block, and the third limiting assembly is arranged inside the telescopic support assembly. When the two groups of semicircular fixing plates rotate relative to each other to fix the cow's hind legs, the first limiting assembly is used to limit the sliding of the slider, the second limiting assembly is used to limit the rotation of the telescopic support assembly, and the third limiting assembly is used to limit the telescopic extension of the telescopic support assembly.

2. A cattle hind leg fixing device for artificial insemination according to claim 1, characterized in that: The telescopic support assembly includes a telescopic rod and a telescopic sleeve. One end of the telescopic rod is fixedly connected to a rotating column, and the other end extends into the interior of the telescopic sleeve and cooperates with the telescopic sleeve for telescopic operation. The rotating column is rotatably embedded in the slider, and two groups of semicircular fixed plates are hingedly arranged at one end of the telescopic sleeve away from the telescopic rod.

3. A cattle hind leg fixing device for artificial insemination according to claim 2, characterized in that: The telescopic sleeve is provided with a first conductive plate and a second conductive plate inside, the first conductive plate is fixedly connected to the inner wall of the telescopic sleeve, the second conductive plate is movably arranged on one side of the first conductive plate, the second conductive plate is connected to an external power supply through a wire, a push rod is fixedly arranged on the side of the second conductive plate away from the first conductive plate, and one end of the push rod away from the second conductive plate extends to the outside of the telescopic sleeve, A slideway is arranged inside the telescopic rod along the axial direction, a sliding pin is slidably arranged inside the slideway, a permanent magnet is arranged at one end of the sliding pin, and the other end extends into the inside of the rotating column, an electromagnet is also arranged inside the slideway, and the electromagnet is connected to the first conductive plate through a wire, and an inner cavity is opened inside the slider, The second limiting assembly includes a limiting plate, The limiting plate is arranged inside the inner cavity, and a curved surface is arranged on a side of the limiting plate facing the rotating column, and a plurality of third limiting grooves are formed on the curved surface.

4. A cattle hind leg fixing device for artificial insemination according to claim 3, characterized in that: A vertically distributed slide rail is fixedly arranged on the inner wall of the bracket, the slider is slidably matched with the slide rail, and a plurality of first limiting grooves are formed on a side of the slide rail away from the bracket. The first limiting assembly includes a first limiting pin, One end of the first limiting pin extends to the inner side of the slider, and the other end extends into the inner cavity and is connected to the limiting plate.

5. The cattle hind leg fixing device for artificial insemination according to claim 3, characterized in that: The inner wall of the telescopic sleeve is provided with a plurality of second limiting grooves along the length direction, and the side wall of the telescopic rod is provided with a plug hole along the radial direction. The third limiting assembly includes a second limiting pin, The side wall of the sliding pin is provided with an oblique groove, one end of the second limiting pin is in a wedge-shaped structure, one end of the second limiting pin in the wedge-shaped structure extends into the oblique groove, and the other end extends into the insertion hole.

6. A cattle hind leg fixing device for artificial insemination according to claim 3, characterized in that: The telescopic sleeve is provided with a first elastic member inside for providing elastic tension to the second conductive plate. A second elastic member for providing elastic support to the limiting plate is arranged inside the inner cavity.

7. A cattle hind leg fixing device for artificial insemination according to claim 6, characterized in that: The first elastic member and the second elastic member are springs or metal springs.

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