A fence door for livestock quarantine fence

Abstract

The present invention discloses a fence door for livestock quarantine pens, comprising a door frame, a first door body and a second door body, wherein a transverse guide rail is fixedly arranged on the door frame, the upper ends of the first door body and the second door body are movably arranged on the transverse guide rail through a sliding assembly, and the lower ends of the two door bodies are also provided with a limiting mechanism parallel to the transverse guide rail, and the limiting mechanism is used to limit the verticality of the two door bodies when they move along the transverse guide rail; a connecting rod assembly is arranged between the first door body and the second door body, and when the connecting rod assembly is rotated around the door frame, the first door body and the second door body can be driven to open and close synchronously. The fence door for livestock quarantine pens of the present invention can realize the synchronous opening and closing of the door bodies on both sides, improve the efficiency of the fence door opening and closing, and can timely seal the livestock in the quarantine pens, avoiding livestock injuries caused by the fence door not being closed in time during the quarantine process. The smoothness of the door body opening can be guaranteed by the provided limiting mechanism and linkage assembly.

Description

Technical Field

[0001] The invention relates to the technical field of livestock quarantine, in particular to a fence door for livestock quarantine fences. Background Art

[0002] In the process of livestock breeding, it is necessary to conduct various quarantines and inspections on the livestock. Some farms use quarantine pens to conduct quarantine inspections on livestock. First, the gate is opened to drive the livestock into the gate and then the gate is closed. Most existing gates are hinged on the gate frame on one side or both sides, and the gate is opened or closed by a handle set on the gate. However, during the use of such gates, the operator needs to stand directly in front of or behind the livestock to open and close the gate. If it is not closed in time, the livestock may escape, especially for large livestock, such as cattle and horses, there is a risk of livestock injuring people. Summary of the invention

[0003] The invention aims at solving the deficiencies in the prior art and provides a fence door for livestock quarantine fences.

[0004] The object of the present invention is achieved in the following manner:

[0005] A fence door for livestock quarantine fence, comprising a door frame, a first door body and a second door body, wherein the first door body and the second door body are both movably arranged on the door frame, a transverse guide rail is fixedly arranged on the door frame, the upper ends of the first door body and the second door body are both movably arranged on the transverse guide rail through a sliding assembly, and the lower ends of the first door body and the second door body are also provided with a limiting mechanism parallel to the transverse guide rail, and the limiting mechanism is used to limit the verticality of the first door body and the second door body when moving along the transverse guide rail; a connecting rod assembly is arranged between the first door body and the second door body, and the two ends of the connecting rod assembly are respectively movably connected to the first door body and the second door body, and the connecting rod assembly is also hingedly connected to the door frame, and when the connecting rod assembly is rotated around the door frame, it can drive the first door body and the second door body to open and close synchronously;

[0006] The sliding assembly includes connecting members arranged on both sides of the corresponding door bodies, and the two connecting members are connected to the same rolling wheel on one side away from the corresponding door bodies. The rolling wheel is rotatably arranged between the two connecting members, and the rolling wheel can roll on the upper surface of the transverse guide rail to drive the first door body or the second door body to move along the transverse guide rail;

[0007] The connecting rod assembly includes a first connecting plate hinged on the first door body, the other end of the first connecting plate is hinged with a first folding plate, the bending part of the first folding plate is hingedly connected to the door frame, the other end of the first folding plate is hinged with a second folding plate, the second folding plate is bent toward the second door body, and the other end of the second folding plate is hingedly connected to the connecting member;

[0008] The barrier door also includes a locking mechanism, which is used to fix the rotating connecting rod assembly at the rotation angle, thereby maintaining the opening degree of the first door body and the second door body in this state; the locking mechanism includes a fan-shaped toothed plate fixed on the door frame close to the first door body, the bending part of the first folding plate is hingedly connected to the fan-shaped toothed plate through a first hinge shaft, and a limit block is rotatably provided on a side surface of the first folding plate close to the fan-shaped toothed plate, and the limit block is fixed to the first folding plate through a first elastic element on a side of the fan-shaped toothed plate, and the limit block can contact the fan-shaped toothed plate, and an auxiliary plate is also fixed on one side of the fan-shaped toothed plate, the upper part of the auxiliary plate is wedge-shaped, and the upper plane height of the auxiliary plate gradually increases from the side close to the first door body to the side away from the first door body;

[0009] The gate also includes a lifting assembly arranged on the door frame for lifting the head of livestock, the lifting assembly includes a first lifting rod, a second lifting rod and a lifting limit rod, the first lifting rod and the lifting limit rod are both hinged to the door frame through a damping shaft, the second lifting rod is hinged to the first lifting rod, and the lifting limit rod is also provided with a lifting limit hole, and the second lifting rod can move in the lifting limit hole.

[0010] As an optional solution of the technical solution of the present invention, the limiting mechanism includes a limiting rail arranged on the door frame and parallel to the transverse guide rail, and also includes a sliding groove arranged on the first door body and the second door body, and the sliding groove is straddled on the limiting rail and can move laterally along the limiting rail.

[0011] As an optional solution of the technical solution of the present invention, a rotating handle is also provided at the hinge position between the connecting rod assembly and the door frame.

[0012] As an optional scheme of the technical solution of the present invention, the rotating handle includes a first rotating plate, a second rotating plate, a rotating connecting plate and a rotating handle, the first rotating plate is fixedly connected at the hinge position of the connecting rod assembly and the door frame, and the rotating connecting plate is fixedly set on the first rotating plate; an adjustment long hole is provided on the second rotating plate, and a limiting groove is provided below the adjustment long hole, the second rotating plate is connected to the first rotating plate by a rod-shaped member passing through the adjustment long hole, the limiting groove is clamped at the rotating connecting plate, and the rotating handle is fixed on the second rotating plate; the rotating handle is connected to the first rotating plate through a second elastic element.

[0013] As an optional scheme of the technical solution of the present invention, linkage components are provided on the first door body and the second door body, and the linkage components include two groups of follow-up components and a linkage guide rod arranged above and below the corresponding door bodies, and the follow-up components include a first linkage rod and a second linkage rod, one end of the first linkage rod is hinged on the door frame, and the other end is hingedly connected to the second linkage rod, and the other end of the second linkage rod is hinged on the corresponding door body of the side door frame; both ends of the linkage guide rod are hinged at the hinges of the first linkage rod and the second linkage rod at the corresponding ends.

[0014] As an optional solution of the technical solution of the present invention, another rotating handle is provided at the hinged position between the connecting rod assembly and the door frame through a transmission rod.

[0015] The beneficial effects of the present invention are:

[0016] The livestock quarantine fence door of the present invention can realize the synchronous opening and closing of the first door body and the second door body, improve the efficiency of the fence door opening and closing, and when applied to the livestock quarantine fence, the livestock can be timely enclosed in the quarantine fence, avoiding livestock injuries caused by the failure to close the fence door in time during the quarantine process. The limit mechanism can prevent the door bodies on both sides from tilting during the opening and closing process, ensuring the smoothness of the door body opening; in addition, by setting the linkage component, it can be ensured that the upper and lower parts of the first door body and the second door body can move synchronously during the opening and closing process, preventing the jamming caused by the asynchronism during the movement of the door body, and further ensuring the smoothness of the door body opening and closing. The locking mechanism can fix the door body opened to any degree, meet the requirements of the door body opening degree in different application occasions, and improve the applicability of the fence door. In addition, due to the provision of a lifting component, the head of the livestock confined in the quarantine fence can be conveniently lifted, which is convenient for subsequent inspection and epidemic prevention, and further increases the applicability of the fence door. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the gate in the open state in Example 1 of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of the gate in the closed state in Example 1 of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of the gate in the closed state in Example 2 of the present invention.

[0021] Figure 4 This is a schematic diagram of the inner structure of the gate when the gate is in a closed state in Example 2 of the present invention.

[0022] Figure 5 This is an exploded view of the rotating handle in Example 2 of the present invention.

[0023] Figure 6 This is an exploded view of the limiting mechanism in Example 2 of the present invention.

[0024] Figure 7 It is a structural schematic diagram of the lifting assembly in the lifted state in Example 2 of the present invention.

[0025] Figure 8 This is a diagram showing the use status of the gates shown in Examples 1 and 2 of the present invention.

[0026] Reference numerals:

[0027] 10-door frame; 11-lateral guide rail; 12-limit rail; 20-first door body; 21-sliding groove; 22-handle; 30-second door body; 40-sliding assembly; 41-connecting piece; 42-rolling wheel; 50-connecting rod assembly; 51-first connecting plate; 52-first folding plate; 53-second folding plate; 54-rotating handle; 541-first rotating plate; 542-second rotating plate; 543-rotating connecting plate; 5 44-rotating handle; 545-second elastic element; 55-transmission rod; 60-locking mechanism; 61-sector tooth plate; 62-limiting block; 63-first elastic element; 64-auxiliary plate; 70-linkage assembly; 71-follow-up assembly; 711-first linkage rod; 712-second linkage rod; 72-linkage guide rod; 80-lifting assembly; 81-first lifting rod; 82-second lifting rod; 83-lifting limit rod. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In the description of the embodiments, unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or it can be connected through an intermediate medium, or it can be a communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Embodiment 1,

[0032] like Figure 1 and Figure 2 As shown, the present embodiment discloses a fence door for livestock quarantine fence, including a door frame 10, a first door body 20 and a second door body 30, the first door body 20 and the second door body 30 are both movably arranged on the door frame 10, a transverse guide rail 11 is fixedly arranged on the door frame 10, the upper ends of the first door body 20 and the second door body 30 are both movably arranged on the transverse guide rail 11 through a sliding assembly 40, and the lower ends of the first door body 20 and the second door body 30 are also provided with a limiting mechanism parallel to the transverse guide rail 11, the limiting mechanism is used to limit the verticality of the first door body 20 and the second door body 30 when moving along the transverse guide rail 11; a connecting rod assembly 50 is arranged between the first door body 20 and the second door body 30, the two ends of the connecting rod assembly 50 are respectively movably connected to the first door body 20 and the second door body 30, and the connecting rod assembly 50 is also hingedly connected to the door frame 10, when the connecting rod assembly 50 is rotated around the door frame 10, it can drive the first door body 20 and the second door body 30 to open and close synchronously.

[0033] In this solution, the operator stands on the side of the quarantine fence and rotates the connecting rod assembly 50. Driven by the sliding assembly 40, the first door body 20 and the second door body 30 can be smoothly opened and closed synchronously, which can avoid standing directly in front of or behind the livestock, and improve the efficiency of opening and closing the fence door. At the same time, the limiting mechanism set at the lower end of the first door body 20 and the second door body 30 can ensure the verticality of the first door body 20 and the second door body 30 when moving, prevent the first door body 20 and the second door body 30 from being stuck during the opening and closing process, and can timely seal the livestock in the quarantine fence, avoiding livestock injuries caused by the fence door not being closed in time during the quarantine process.

[0034] A specific solution of the sliding assembly 40 in the above technical solution is that the sliding assembly 40 includes connecting members 41 arranged on both sides of the corresponding door bodies, and the two connecting members 41 are connected to the same rolling wheel 42 on the side away from the corresponding door bodies. The rolling wheel 42 is rotatably arranged between the two connecting members 41, and the rolling wheel 42 can roll on the upper surface of the transverse guide rail 11 to drive the first door body 20 or the second door body 30 to move along the transverse guide rail 11. When the connecting rod assembly 50 is rotated, the connecting members 41 arranged on the first door body 20 and the second door body 30 can drive the corresponding door bodies to move relative to or toward each other, and the arrangement of the rolling wheel 42 can make the start and closing process of the first door body 20 and the second door body 30 smoother and more labor-saving.

[0035] The limiting mechanism includes a limiting rail 12 arranged on the door frame 10 and parallel to the transverse guide rail 11, and also includes a sliding groove 21 arranged on the first door body 20 and the second door body 30, and the sliding groove 21 is arranged across the limiting rail 12 and can move laterally along the limiting rail 12. In actual use, the first door body 20 and the second door body 30 are hung on the transverse guide rail through correspondingly arranged connecting members 41 and rolling wheels 42. In this case, the friction between the sliding groove 21 and the limiting rail 12 can be reduced, so that the cooperation between the sliding groove 21 and the limiting rail 12 only plays a role in limiting the verticality during the movement of the first door body 20 and the second door body 30, and does not limit the movement of the first door body 20 and the second door body.

[0036] The function of the connecting rod assembly 50 is to drive the first door body 20 and the second door body 30 connected thereto to open and close synchronously. As a specific structure thereof, the connecting rod assembly 50 includes a first connecting plate 51 hinged on the first door body 20, the other end of the first connecting plate 51 is hinged with a first folding plate 52, the bending part of the first folding plate 52 is hingedly connected to the door frame, the other end of the first folding plate 52 is hinged with a second folding plate 53, the second folding plate 53 is bent toward the second door body 30, and the other end of the second folding plate 53 is hingedly connected to the connecting member 41. When the first folding plate 52 is rotated around the hinged part of the first folding plate 52 and the door frame 10, the first connecting plate 51 drives the first door body 20, and the second folding plate 53 drives the second door body 30 to move relative or toward each other through the connecting member 41, thereby realizing the synchronous opening and closing of the first door body 20 and the second door body 30.

[0037] It can be understood that in order to facilitate the starting and closing of the first door body 20 and the second door body 30, a handle 22 can be set on the first door body 20 and / or the second door body 30, and by pulling the handle 22 outward, the first door body 20 and the second door body 30 are opened synchronously under the drive of the connecting rod assembly 50; by pushing the handle 22 inward, the first door body 20 and the second door body 30 can be closed synchronously.

[0038] Embodiment 2,

[0039] This embodiment is an improvement made on the basis of Embodiment 1. In this embodiment, Figure 3 , Figure 4 and Figure 6 As shown, it also includes a locking mechanism 60, which is used to fix and maintain the rotating connecting rod assembly 50 at a certain rotation angle, thereby maintaining the opening degree of the first door body 20 and the second door body 30 in this state; the locking mechanism 60 includes a fan-shaped toothed plate 61 fixed on the door frame 10 close to the first door body 20, and the bending part of the first folding plate 52 is hingedly connected to the fan-shaped toothed plate 61 through a first hinge axis, and a limit block 62 is rotatably provided on one side surface of the first folding plate 52 close to the fan-shaped toothed plate 61, and the side of the limit block 62 facing the fan-shaped toothed plate 61 is fixed to the first folding plate 52 through a first elastic element 63, and the limit block 62 can contact the fan-shaped toothed plate 61, and an auxiliary plate 64 is also fixed on one side of the fan-shaped toothed plate 61, and the upper part of the auxiliary plate 64 is wedge-shaped, and the upper plane height of the auxiliary plate 64 gradually increases from the side close to the first door body 20 to the side away from the first door body 20.

[0040] In this solution, when the connecting rod assembly 50 is rotated to open the door bodies on both sides, the auxiliary plate 64 lifts the limit block 62 so that the limit block 62 does not contact the fan-shaped tooth plate 61, so that the first folding plate 52 can rotate smoothly. When the door bodies on both sides are opened to a certain extent and need to be fixed in this state, the connecting rod assembly is stopped. At this time, the limit block 62 is pulled by the elastic element 63 and abuts against the fan-shaped tooth plate 61. At this time, if no external force acts on the first folding plate 52, the rotation angle of the first folding plate 52 is maintained, that is, the opening degree of the door bodies on both sides is maintained. When the door bodies on both sides need to be closed, the first folding plate 52 is rotated in the opposite direction by external force, and the limit block 62 pulled by the elastic element 63 slides along the fan-shaped tooth plate 61 under the action of external force, so that the door bodies on both sides can be closed.

[0041] In order to conveniently rotate the connecting rod assembly 50, a rotating handle 54 is also provided at the hinged position of the connecting rod assembly 50 and the door frame 10. The setting of the connecting rod handle 54 increases the force arm when the connecting rod assembly 50 rotates, reduces the force when rotating the connecting rod 50, and makes the opening and closing of the door bodies on both sides more labor-saving.

[0042] The rotating handle can be a rod-shaped handle fixedly arranged on the first connecting plate 51. In this embodiment, Figure 5 As shown, the rotating handle 54 includes a first rotating plate 541, a second rotating plate 542, a rotating connecting plate 543 and a rotating handle 544. The first rotating plate 541 is fixedly connected to the hinge position of the connecting rod assembly 50 and the door frame 10, and the rotating connecting plate 543 is fixedly set on the first rotating plate 541; an adjustment long hole 5421 is set on the second rotating plate 542, and a limiting groove 5422 is set below the adjustment long hole 5421. The second rotating plate 542 is connected to the first rotating plate 541 by a rod-shaped member passing through the adjustment long hole 5421, and the limiting groove 5422 is clamped at the rotating connecting plate 543, and the rotating handle 544 is fixed on the second rotating plate 542; the rotating handle 544 is connected to the first rotating plate 541 through a second elastic element 545.

[0043] Under normal conditions, the second rotating plate 542 and the rotating handle 544 are pulled by the second elastic element 545, and the limiting groove 5422 is clamped on the rotating connecting plate 543. By rotating the rotating handle 544, the second rotating plate 542 drives the first rotating plate 541 to rotate via the rotating connecting plate 543, and further drives the connecting rod assembly 50 fixedly connected to the first rotating plate 541 to rotate, thereby realizing the opening and closing of the doors on both sides. When the door is opened, the rotating handle 544 is in the lifted state. At this time, the staff outside the quarantine fence may accidentally touch the rotating handle 544 when walking or performing other operations. At this time, the rotating handle 544 is pulled outward so that the limit groove 5422 of the second rotating plate 542 is separated from the rotating connecting plate 543, and the connection between the first rotating plate 541 and the second rotating plate 542 is released, that is, the connection between the first rotating plate 541 and the rotating handle 544 is released. At this time, the rotation of the rotating handle 544 will not affect the door bodies on both sides. Even if the rotating handle 544 is accidentally touched during the work, the state of the first door body 20 and the second door body 30 will not change. When the rotating handle 544 is needed again to control the opening and closing of the first door body 20 and the second door body 30, the rotating handle 544 is pulled again so that the limit groove 5422 is stuck in the rotating connecting plate 543 again, and the connection between the first rotating plate 541 and the second rotating plate 542 is restored.

[0044] In addition, when the first door body 20 and the second door body 30 are opened and closed, there may be a process in which the upper part of the door body and the lower part of the door body move asynchronously, especially when the height of the door body is high, or the friction between the lower part of the door body and the limit rail 12 is large, this degree of asynchrony will be aggravated, which may cause the upper and lower parts of the first door body 20 and the second door body 30 to be stuck during the opening and closing process, affecting the efficiency and effect of the door opening and closing. In this solution, again as Figure 3As shown, the first door body 20 and the second door body 30 are both provided with a linkage assembly 70, and the linkage assembly 70 includes two sets of follower assemblies 71 and a linkage guide rod 72 arranged above and below the corresponding door bodies, and the follower assembly includes a first linkage rod 711 and a second linkage rod 712, one end of the first linkage rod 711 is hinged on the door frame 10, and the other end is hingedly connected to the second linkage rod 712, and the other end of the second linkage rod 712 is hinged on the door body corresponding to the side door frame; both ends of the linkage guide rod 72 Both are hinged at the hinges of the first linkage rod 711 and the second linkage rod 712 at the corresponding ends; when the first door body 20 and the second door body 30 are opened and closed, the angle between the first linkage rod 711 and the second linkage rod 712 of the upper follower assembly 71 changes first, and at this time, the angles of the first linkage rod 711 and the second linkage rod 712 of the lower follower assembly 71 are driven by the linkage guide rod 72 to change accordingly, driving the lower parts of the first door body 20 and the second door body 30 to move synchronously with their upper parts, thereby avoiding the occurrence of jamming.

[0045] For large livestock, the distance between the livestock quarantine fence in the length direction is often large, and the distance between the first door body 20 and the second door body 30 is large. When the operator operates in the middle part of the quarantine fence, when the door body on one side needs to be opened or closed, it is necessary to walk to the fence door position, which is inconvenient. Figure 8 As shown, another rotating handle 54 is provided at the hinged position of the connecting rod assembly 50 and the door frame 10 through a transmission rod 55. The operator can select the nearest rotating handle 54 to open or close the door body, which increases the simplicity of operation of the epidemic prevention fence door.

[0046] In the actual quarantine process, it is often necessary to lift the head of the livestock for facial examination or to feed the livestock with medicine. However, large livestock such as cattle and horses often do not cooperate, and it is also difficult to lift the head of the livestock manually. Therefore, in this solution, Figure 7As shown, a lifting assembly 80 for lifting the head of livestock is also provided on the door frame 10, and the lifting assembly 80 includes a first lifting rod 81, a second lifting rod 82 and a lifting limit rod 83, the first lifting rod 81 and the lifting limit rod 83 are both hinged to the door frame 10 through a damping shaft, the second lifting rod 82 is hinged to the first lifting rod 81, and the lifting limit rod 83 is also provided with a lifting limit hole, and the second lifting rod 82 can move in the lifting limit hole. When the livestock is confined in the quarantine pen, open the single-side quarantine pen door so that the livestock's head extends to the lifting assembly 80, press the first lifting rod 81 downward so that the first lifting rod 81 rotates around the hinge with the door frame 10, and drives the second lifting rod 82 to move upward to lift the livestock's head. The second lifting rod 82 penetrates the lifting limit hole and gradually clamps in the lifting limit hole. At this time, under the action of the friction between the second lifting rod 82 and the lifting limit hole, the second lifting rod 82 can be clamped in the lifting limit hole, so that the state of the second lifting rod 82 can be maintained. When the inspection is completed and the second lifting rod needs to be lowered, the lifting limit rod 83 is rotated to release the second lifting rod 82 from the lifting limit hole.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement; when the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

Claims

1. A livestock quarantine fence door, comprising a door frame, a first door body and a second door body, wherein the first door body and the second door body are both movably arranged on the door frame, characterized in that: A transverse guide rail is fixedly arranged on the door frame, the upper ends of the first door body and the second door body are movably arranged on the transverse guide rail through a sliding assembly, and the lower ends of the first door body and the second door body are also provided with a limiting mechanism parallel to the transverse guide rail, and the limiting mechanism is used to limit the verticality of the first door body and the second door body when they move along the transverse guide rail; A connecting rod assembly is provided between the first door body and the second door body, and the two ends of the connecting rod assembly are movably connected to the first door body and the second door body respectively. The connecting rod assembly is also hingedly connected to the door frame. When the connecting rod assembly is rotated around the door frame, the first door body and the second door body can be driven to open and close synchronously. The sliding assembly includes connecting members arranged on both sides of the corresponding door bodies, and the two connecting members are connected to the same rolling wheel on one side away from the corresponding door bodies. The rolling wheel is rotatably arranged between the two connecting members, and the rolling wheel can roll on the upper surface of the transverse guide rail to drive the first door body or the second door body to move along the transverse guide rail; The connecting rod assembly includes a first connecting plate hinged on the first door body, the other end of the first connecting plate is hinged with a first folding plate, the bending part of the first folding plate is hingedly connected to the door frame, the other end of the first folding plate is hinged with a second folding plate, the second folding plate is bent toward the second door body, and the other end of the second folding plate is hingedly connected to the connecting member; The barrier gate further comprises a locking mechanism, which is used to fix the rotating connecting rod assembly at the rotation angle, thereby maintaining the opening degree of the first door body and the second door body in this state; The locking mechanism includes a fan-shaped toothed plate fixed on the door frame close to the first door body, the bending part of the first folding plate is hingedly connected to the fan-shaped toothed plate through a first hinge shaft, a limit block is rotatably provided on a side surface of the first folding plate close to the fan-shaped toothed plate, a side surface of the limit block facing the fan-shaped toothed plate is fixed to the first folding plate through a first elastic element, the limit block can abut against the fan-shaped toothed plate, an auxiliary plate is also fixed on one side of the fan-shaped toothed plate, the upper part of the auxiliary plate is wedge-shaped, and the upper plane height of the auxiliary plate gradually increases from the side close to the first door body to the side away from the first door body; The gate also includes a lifting assembly arranged on the door frame for lifting the head of livestock, the lifting assembly includes a first lifting rod, a second lifting rod and a lifting limit rod, the first lifting rod and the lifting limit rod are both hinged to the door frame through a damping shaft, the second lifting rod is hinged to the first lifting rod, and the lifting limit rod is also provided with a lifting limit hole, and the second lifting rod can move in the lifting limit hole.

2. The livestock quarantine fence door according to claim 1, characterized in that: The limiting mechanism includes a limiting rail arranged on the door frame and parallel to the transverse guide rail, and also includes a sliding groove arranged on the first door body and the second door body, the sliding groove is straddled on the limiting rail and can move laterally along the limiting rail.

3. The livestock quarantine fence door according to claim 1, characterized in that: A rotating handle is also provided at the hinged position between the connecting rod assembly and the door frame.

4. The livestock quarantine fence door according to claim 3, characterized in that: The rotating handle comprises a first rotating plate, a second rotating plate, a rotating connecting plate and a rotating handle, wherein the first rotating plate is fixedly connected to the hinged position between the connecting rod assembly and the door frame, and the rotating connecting plate is fixedly arranged on the first rotating plate; The second rotating plate is provided with an adjustment long hole, a limiting groove is provided below the adjustment long hole, the second rotating plate is connected to the first rotating plate through a rod-shaped member passing through the adjustment long hole, the limiting groove is clamped at the rotating connecting plate, and the rotating handle is fixed on the second rotating plate; The rotating handle is connected to the first rotating plate through a second elastic element.

5. The livestock quarantine fence door according to claim 1, characterized in that: The first door body and the second door body are both provided with linkage components, the linkage components include two groups of follower components and a linkage guide rod arranged above and below the corresponding door bodies, the follower components include a first linkage rod and a second linkage rod, one end of the first linkage rod is hinged on the door frame, and the other end is hingedly connected to the second linkage rod, and the other end of the second linkage rod is hinged on the door body corresponding to the side door frame; Both ends of the linkage guide rod are hinged at the hinges of the first linkage rod and the second linkage rod at the corresponding ends.

6. The livestock quarantine fence door according to claim 4, characterized in that: Another rotating handle is arranged at the hinged position between the connecting rod assembly and the door frame through a transmission rod.

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