CN215192560U

CN215192560U - Fence door for livestock quarantine fence

Info

Publication number: CN215192560U
Application number: CN202120636255.2U
Authority: CN
Inventors: 金天鸿; 生西刚; 沈江
Original assignee: Qingdao Xintaihejin Metal Products Co ltd
Current assignee: Qingdao Xintaihejin Metal Products Co ltd
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-12-17
Anticipated expiration: 2031-03-29

Abstract

The utility model discloses a fence door for livestock quarantine fence, which comprises 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, 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 for limiting the verticality of the two door bodies when moving along the transverse guide rail; and a connecting rod assembly is arranged between the first door body and the second door body, and when the connecting rod assembly rotates around the door frame, the first door body and the second door body can be driven to be synchronously opened and closed. The utility model discloses a fence door for livestock quarantine fence can realize that the synchronization of the both sides door body is opened and closed, has improved the efficiency that fence door was opened and close, can in time seal the livestock in the quarantine fence, avoids hindering people's incident because of the livestock that fence door not in time closed and cause at the in-process of quarantine. Through the limiting mechanism and the linkage assembly, the smoothness of opening of the door body can be guaranteed.

Description

Fence door for livestock quarantine fence

Technical Field

The utility model belongs to the technical field of the livestock quarantine technique and specifically relates to a fence door is used to livestock quarantine fence.

Background

In the process of breeding livestock, various quarantine and inspection needs to be carried out on the raised livestock. And quarantine inspection is carried out on livestock by adopting a quarantine fence in part of farms, and the fence is firstly opened to drive the livestock into the fence and then closed. Most of the existing fence doors are hinged on a fence door frame at one side or two sides, and the fence doors are opened or closed through handles arranged on the fence doors. However, in the using process of the fence door, an operator needs to stand right in front of or right behind the livestock to open and close the fence door, if the fence door is not closed in time, the livestock can escape, and especially for large livestock such as cattle and horses, the hidden danger that the livestock injures people can exist.

SUMMERY OF THE UTILITY MODEL

The utility model provides a fence door for livestock quarantine fence aiming at the defects existing in the prior art.

The purpose of the utility model is realized with the following mode:

a fence door for a livestock quarantine fence comprises a door frame, a first door body and a second door body, wherein the first door body and the second door body are 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 movably arranged on the transverse guide rail through a sliding assembly, the lower ends of the first door body and the second door body are also provided with limiting mechanisms parallel to the transverse guide rail, and the limiting mechanisms are used for limiting the verticality of the first door body and the second door body when moving along the transverse guide rail; the door frame is hinged to the door frame, and when the connecting rod assembly rotates around the door frame, the first door body and the second door body can be driven to be opened and closed synchronously.

As the utility model discloses technical scheme's an alternative, sliding assembly is including setting up the connecting piece in corresponding a body both sides, two one side that the corresponding door body was kept away from to the connecting piece is connected same roll wheel, the roll wheel rotationally sets up two between the connecting piece, the roll wheel can transverse guide upper surface rolls and then drives first door body or the second door body is followed transverse rail removes.

As an alternative of the technical scheme of the utility model, stop gear is including setting up on the door frame with the parallel spacing rail of horizontal track, still including setting up first door body with sliding tray on the second door body, the sliding tray is striden and is established just can follow on the spacing rail lateral shifting.

As the utility model discloses technical scheme's an alternative, link assembly is including articulating first connecting plate on the first door body, the other end of first connecting plate articulates there is first folded plate, the department of buckling of first folded plate with the door frame is articulated to be connected, the other end of first folded plate articulates there is the second folded plate, the second folded plate orientation the second door body direction is buckled, the other end of second folded plate with the connecting piece is articulated to be connected.

As an alternative of the technical solution of the present invention, the gate further includes a locking mechanism, and the locking mechanism is used for fixing the rotated connecting rod assembly at the rotation angle, so as to maintain the opening degree of the first door body and the second door body in this state; locking mechanism is including fixing be close to on the door frame the sector gear plate of the first door body, the department of bending of first folded plate through first articulated shaft with sector gear plate is articulated to be connected, first folded plate is close to rotationally be provided with a stopper on sector gear plate's a side, the stopper orientation sector gear plate's a side is fixed through first elastic element on the first folded plate, the stopper can be contradicted on the sector gear plate, one side of sector gear plate still is fixed with an accessory plate, the upper portion of accessory plate is for agreeing with the shape form, the last plane height of accessory plate is by being close to one side of the first door body is to keeping away from one side of the first door body crescent.

As an alternative of the technical scheme of the utility model, link assembly with door frame articulated position department still is provided with the rotation handle.

As an alternative 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 to the hinge position of the connecting rod assembly and the door frame, and the rotating connecting plate is fixedly disposed on the first rotating plate; the second rotating plate is provided with an adjusting long hole, a limiting groove is arranged below the adjusting long hole, the second rotating plate is connected with the first rotating plate through a rod-shaped member penetrating through the adjusting 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 with the first rotating plate through a second elastic element.

As an alternative of the technical solution of the present invention, the first door body and the second door body are both provided with a linkage assembly, the linkage assembly includes two sets of follow-up assemblies and a linkage guide rod which are arranged up and down on the corresponding door body, the follow-up assembly includes a first linkage rod and a second linkage rod, one end of the first linkage rod is hinged on the door frame, the other end is hinged with 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; and two ends of the linkage guide rod are hinged at the corresponding ends of the hinged parts of the first linkage rod and the second linkage rod.

As an alternative of the technical scheme of the utility model, link assembly with door frame articulated position department is provided with another rotation handle through the transfer line.

As a technical scheme of the utility model an alternative, this hurdle still is including setting up the lifting subassembly that is used for lifting livestock head on the door frame, the lifting subassembly includes that first lifting rod, second lift lifting rod and lifting gag lever post, first lifting rod and lifting gag lever post all articulate through the damping pivot on the door frame, the second lifting rod articulates on first lifting rod, still be provided with the spacing hole of lifting on the lifting gag lever post, the second lifting rod can remove in the spacing hole of lifting.

The utility model has the advantages that:

the utility model discloses a fence for livestock quarantine fence can realize that the synchronization of the first door body and the second door body is opened and closed, has improved the efficiency that the fence was opened and close, when using on the livestock quarantine fence, can seal the livestock in the quarantine fence in time, avoids damaging people's incident because of the not timely livestock that closes the cause of fence at the in-process of quarantine. The limiting mechanisms can prevent the door bodies on the two sides from inclining in the opening and closing processes, and ensure the opening smoothness of the door bodies; in addition, through setting up the linkage subassembly, can guarantee that first door body and second door body can synchronous motion at opening and closed in-process upper portion and lower part, prevented that the door body from removing the unsynchronized card that causes of in-process, further guaranteed the smoothness degree that the door body was opened and close. The locking mechanism can fix the door body which is opened to any degree, the requirement of different application occasions on the opening degree of the door body is met, and the applicability of the fence door is improved. In addition, due to the lifting assembly, the head of the livestock limited in the epidemic prevention fence can be conveniently lifted, the follow-up inspection and epidemic prevention are facilitated, and the applicability of the fence door is further improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural view of an open state of a fence door in embodiment 1 of the present invention.

Fig. 2 is a schematic structural view of a closed state of a fence door in embodiment 1 of the present invention.

Fig. 3 is a schematic structural view of a closed state of a fence door in embodiment 2 of the present invention.

Fig. 4 is a schematic view of an inner side structure of a gate in a closed state of the gate in embodiment 2 of the present invention.

Fig. 5 is an exploded view of a rotary handle in embodiment 2 of the present invention.

Fig. 6 is an exploded view of a position limiting mechanism in embodiment 2 of the present invention.

Fig. 7 is a schematic structural view of a lifting state of the lifting assembly in embodiment 2 of the present invention.

Fig. 8 is a usage state diagram of the gate according to embodiments 1 and 2 of the present invention.

Reference numerals:

10-a door frame; 11-a transverse guide rail; 12-a limit rail; 20-a first door body; 21-a sliding groove; 22-a handle; 30-a second door body; 40-a slide assembly; 41-a connector; 42-a rolling wheel; 50-a linkage assembly; 51-a first connection plate; 52-a first flap; 53-a second flap; 54-turning the handle; 541-a first rotating plate; 542-a second rotating plate; 543-rotating the connecting plate; 544-rotating the handle; 545-a second elastic element; 55-a transmission rod; 60-a locking mechanism; 61-sector toothed plate; 62-a limiting block; 63-a first elastic element; 64-an auxiliary plate; 70-a linkage assembly; 71-a follower assembly; 711-first linkage bar; 712-a second linkage rod; 72-a linkage guide; 80-a lift assembly; 81-a first lifting rod; 82-a second lifting rod; 83-raise the stop bar.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the description of the embodiments, the terms "disposed," "connected," and the like are to be construed broadly unless otherwise explicitly specified or limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; either directly or through an intervening medium, or through internal communication between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the case of the example 1, the following examples are given,

as shown in fig. 1 and fig. 2, the embodiment discloses a fence door for a livestock quarantine fence, which includes a door frame 10, a first door body 20 and a second door body 30, wherein 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, 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, and the limiting mechanism is used for limiting the verticality of the first door body 20 and the second door body 30 when moving along the transverse guide rail 11; be provided with link assembly 50 between first door body 20 and the second door body 30, link assembly 50's both ends respectively with first door body 20, second door body 30 swing joint, link assembly 50 still is articulated with door frame 10 and is connected, when rotating link assembly 50 around door frame 10, can drive first door body 20 and the synchronous opening and close of second door body 30.

In this solution, the operator stands on the side of the epidemic prevention fence to rotate the connecting rod assembly 50, and under the driving of the sliding assembly 40, the first door body 20 and the second door body 30 can be smoothly opened and closed synchronously, so as to avoid standing directly in front of or behind the livestock, and improve the efficiency of opening and closing the fence door. Meanwhile, the limiting mechanisms arranged at the lower ends 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 during movement, prevent the first door body 20 and the second door body 30 from being blocked during opening and closing, seal livestock in a quarantine fence in time, and avoid the livestock injury event caused by untimely closing of the fence in the quarantine process.

In the above technical solution, one specific scheme of the sliding assembly 40 is that the sliding assembly 40 includes connecting pieces 41 disposed at two sides of the corresponding door body, one side of each of the two connecting pieces 41, which is far away from the corresponding door body, is connected to the same rolling wheel 42, the rolling wheel 42 is rotatably disposed between the two connecting pieces 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 pieces 41 arranged on the first door body 20 and the second door body 30 can drive the corresponding door bodies to move relatively or oppositely, and the rolling wheels 42 can enable the starting and closing processes of the first door body 20 and the second door body 30 to be smoother and more labor-saving.

The limiting mechanism comprises a limiting rail 12 arranged on the door frame 10 and parallel to the transverse rail 11, and further comprises sliding grooves 21 arranged on the first door body 20 and the second door body 30, wherein the sliding grooves 21 are arranged on the limiting rail 12 in a crossing mode and can move transversely along the limiting rail 12. In the actual use process, the first door body 20 and the second door body 30 are hung on the transverse guide rails through the correspondingly arranged connecting pieces 41 and the rolling wheels 42, so that the friction force between the sliding groove 21 and the limiting rail 12 can be reduced, the matching of the sliding groove 21 and the limiting rail 12 only plays a role in limiting the vertical degree of the first door body 20 and the second door body 30 in the moving process, and the movement of the first door body 20 and the second door body is not limited.

The connecting rod assembly 50 is used for driving the first door body 20 and the second door body 30 connected with the connecting rod assembly to be synchronously opened and closed, as a specific structure, the connecting rod assembly 50 comprises 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 hinged with a 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 towards the direction of the second door body 30, and the other end of the second folding plate 53 is hinged with a connecting piece 41. When the first folding plate 52 is rotated around the hinge joint 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 relatively or oppositely through the connecting piece 41, so that the first door body 20 and the second door body 30 can be opened and closed synchronously.

It can be understood that, in order to start and close the first door body 20 and the second door body 30, a handle 22 may be disposed on the first door body 20 and/or the second door body 30, and the handle 22 is pulled outwards, so that the first door body 20 and the second door body 30 are synchronously opened under the driving of the connecting rod assembly 50; the handle 22 is pushed inward, so that the first door body 20 and the second door body 30 can be synchronously closed.

In the case of the example 2, the following examples are given,

in this embodiment, as shown in fig. 3, 4 and 6, the present embodiment further includes a locking mechanism 60, and the locking mechanism 60 is used for fixing and maintaining the rotated connecting rod assembly 50 at a certain rotation angle, so as to maintain the opening degree of the first door body 20 and the second door body 30 in this state; the locking mechanism 60 includes a sector-shaped toothed plate 61 fixed on the door frame 10 and close to the first door body 20, a bending portion of the first folding plate 52 is hinged to the sector-shaped toothed plate 61 through a first hinge shaft, a limit block 62 is rotatably disposed on a side of the first folding plate 52 close to the sector-shaped toothed plate 61, the limit block 62 is fixed on the first folding plate 52 through a first elastic element 63 toward a side of the sector-shaped toothed plate 61, the limit block 62 can be abutted against the sector-shaped toothed plate 61, an auxiliary plate 64 is further fixed on one side of the sector-shaped toothed plate 61, the upper portion of the auxiliary plate 64 is wedge-shaped, and the upper plane height of the auxiliary plate 64 is gradually increased from one side close to the first door body 20 to one side far away from the first door body 20.

In this embodiment, when the swing link assembly 50 opens the two side door bodies, the auxiliary plate 64 pushes up the limit block 62, so that the limit block 62 does not contact with the toothed sector plate 61, and the first folded plate 52 can smoothly swing, when the two side door bodies are opened to a certain extent and it is necessary to fix the two side door bodies in this state, the swing link assembly is stopped, and at this time, the limit block 62 butts against the toothed sector plate 61 under the pulling of the elastic element 63, and at this time, if no external force acts on the first folded plate 52, the swing angle of the first folded plate 52 is maintained, that is, the opening degree of the two side door bodies is maintained. When the door bodies on the two sides need to be closed, the first folding plate 52 is reversely rotated under the action of external force, and the limiting block 62 pulled by the elastic element 63 slides along the sector toothed plate 61 under the action of the external force, so that the door bodies on the two sides can be closed.

For convenience of rotating the link assembly 50, a rotating handle 54 is further provided at a position where the link assembly 50 is hinged to the doorframe 10. The arrangement of the connecting rod handle 54 increases the force arm when the connecting rod assembly 50 rotates, and reduces the acting force when the connecting rod 50 rotates, so that the opening and closing of the door bodies on the two sides are more labor-saving.

The rotating handle may be a rod-shaped handle fixedly disposed on the first connecting plate 51, in this embodiment, as shown in fig. 5, 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 a position where the connecting rod assembly 50 is hinged to the door frame 10, and the rotating connecting plate 543 is fixedly disposed on the first rotating plate 541; the second rotating plate 542 is provided with an adjusting long hole 5421, a limiting groove 5422 is arranged below the adjusting long hole 5421, the second rotating plate 542 is connected with the first rotating plate 541 through a rod-shaped member penetrating through the adjusting long hole 5421, 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 rotation handle 544 is connected to the first connection plate 541 by a second elastic element 545.

Under a normal state, the second rotating plate 542 and the rotating handle 544 are pulled by the second elastic element 545, the limiting groove 5422 is clamped at the rotating connecting plate 543, the rotating handle 544 is rotated, the second rotating plate 542 drives the first rotating plate 541 to rotate through the rotating connecting plate 543, and further drives the connecting rod assembly 50 fixedly connected with the first rotating plate 541 to rotate, so that the opening and closing of the door bodies on two sides are realized. When the door body is opened, the rotating handle 544 is in a lifted state, and at this time, a worker located outside the quarantine bar may inadvertently touch the rotating handle 544 during walking or other operations, and at this time, the rotating handle 544 is pulled outward, so that the limiting groove 5422 of the second adaptor plate 542 is separated from the rotating connecting plate 543, and at this time, 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, and at this time, the rotation of the rotating handle 544 does not act on the door bodies on both sides, and even if the rotating handle 544 is inadvertently touched during the operation, the states of the first door body 20 and the second door body 30 do not change. When the turning handle 544 is needed to control the start and the closing of the first door body 20 and the second door body 30 again, the turning handle 544 is pulled again, so that the limiting groove 5422 is clamped at the turning connecting plate 543 again, and the connection between the first turning plate 541 and the second connecting plate 542 is restored.

In addition, when the first door body 20 and the second door body 30 are opened and closed, the upper portion of the door body and the lower portion of the door body may move out of synchronization, especially when the height of the door body is high, or when the friction between the lower portion of the door body and the limit rail 12 is large, the degree of non-synchronization may be aggravated, the upper portion and the lower portion may be blocked in the opening and closing process of the first door body 20 and the second door body 30, and the opening and closing efficiency and effect of the door body are affected. In the scheme, as shown in fig. 3 again, linkage assemblies 70 are arranged on the first door body 20 and the second door body 30, each linkage assembly 70 includes two groups of follower assemblies 71 and a linkage guide rod 72 which are arranged up and down on the corresponding door body, each follower assembly includes a first linkage rod 711 and a second linkage rod 712, one end of the first linkage rod 711 is hinged to the door frame 10, the other end of the first linkage rod 711 is hinged to the second linkage rod 712, and the other end of the second linkage rod 712 is hinged to the corresponding door body of the door frame on the side; both ends of the linkage guide rod 72 are hinged at the hinged part 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 included angle between the first linkage rod 711 and the second linkage rod 712 of the upper follow-up assembly 71 is firstly changed, and at the moment, the angles of the first linkage rod 711 and the second linkage rod 712 of the lower follow-up assembly 71 driven by the linkage guide rod 72 are correspondingly changed immediately, so that the lower parts of the first door body 20 and the second door body 30 are driven to synchronously move along with the upper parts of the first door body 20 and the second door body 30, and the occurrence of blocking is avoided.

For large-scale livestock, the distance in the length direction of the epidemic prevention fence of the livestock is often large, the distance between the first door body 20 and the second door body 30 is large, when an operator operates in the middle of the epidemic prevention fence, when the door body on a certain side needs to be opened or closed, the operator needs to go to the fence door position, and the operation is inconvenient. In the present solution, therefore, as shown in fig. 8, another turning handle 54 is provided at the position where the connecting rod assembly 50 is hinged to the door frame 10 through a transmission rod 55. So that the operator can select the nearby rotating handle 54 to open or close the door body, and the simplicity of the operation of the anti-epidemic fence door is improved.

In the actual quarantine process, the head of the livestock is often required to be lifted for facial examination or the livestock is required to be fed with medicine, but large livestock such as cattle and horses are often not matched, and the head of the livestock is lifted manually, so that in the scheme, as shown in fig. 7, a lifting assembly 80 for lifting the head of the livestock is further arranged on the door frame 10, the lifting assembly 80 comprises a first lifting rod 81, a second lifting rod 82 and a lifting limiting rod 83, the first lifting rod 81 and the lifting limiting rod 83 are both hinged on the door frame 10 through a damping rotating shaft, the second lifting rod 82 is hinged on the first lifting rod 81, the limiting rod 83 is further provided with a lifting limiting hole, and the second lifting rod 82 can move in the lifting limiting hole. When the livestock is restricted in the quarantine bar, the epidemic prevention fence door on one side is opened, the head of the livestock extends out of the lifting assembly 80, the first lifting rod 81 is pressed downwards to enable the first lifting rod 81 to rotate around the hinged position of the first lifting rod 81 and the doorframe 10, the second lifting rod 82 is driven to move upwards to lift the head of the livestock, the second lifting rod 82 penetrates into the lifting limiting hole and is gradually clamped in the lifting limiting hole, at the moment, under the action of friction force between the second lifting rod 82 and the lifting limiting hole, the second lifting rod 82 can be clamped in the lifting limiting hole, and the state of the second lifting rod 82 can be kept. When the second lifting rod needs to be lowered after the inspection is finished, the lifting limiting rod 83 is rotated to release the second lifting rod 82 from the lifting limiting hole.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should 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 must be based on the realization of those skilled in the art; when the technical solutions are contradictory or cannot be combined, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

Claims

1. A fence door for a livestock quarantine fence comprises a door frame, a first door body and a second door body, wherein the first door body and the second door body are movably arranged on the door frame;

the door frame is hinged to the door frame, and when the connecting rod assembly rotates around the door frame, the first door body and the second door body can be driven to be opened and closed synchronously.

2. The livestock quarantine fence of claim 1, wherein the sliding assembly comprises connecting members disposed on two sides of the corresponding door body, one side of the two connecting members away from the corresponding door body is connected with a same rolling wheel, the rolling wheel is rotatably disposed 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 track.

3. The livestock quarantine fence of claim 1, wherein the limiting mechanism comprises a limiting rail arranged on the door frame and parallel to the transverse rail, and further comprises sliding grooves arranged on the first door body and the second door body, and the sliding grooves are spanned on the limiting rail and can move transversely along the limiting rail.

4. The fence door of claim 1, wherein the linkage assembly comprises a first connecting plate hinged to the first door body, a first folding plate is hinged to the other end of the first connecting plate, a bending portion of the first folding plate is hinged to the door frame, a second folding plate is hinged to the other end of the first folding plate, the second folding plate is bent towards the direction of the second door body, and the other end of the second folding plate is hinged to the connecting piece.

5. The fence of claim 4, further comprising a locking mechanism for fixing the rotated connecting rod assembly at the rotation angle so as to maintain the opening degree of the first door body and the second door body in the state;

locking mechanism is including fixing be close to on the door frame the sector gear plate of the first door body, the department of bending of first folded plate through first articulated shaft with sector gear plate is articulated to be connected, first folded plate is close to rotationally be provided with a stopper on sector gear plate's a side, the stopper orientation sector gear plate's a side is fixed through first elastic element on the first folded plate, the stopper can be contradicted on the sector gear plate, one side of sector gear plate still is fixed with an accessory plate, the upper portion of accessory plate is for agreeing with the shape form, the last plane height of accessory plate is by being close to one side of the first door body is to keeping away from one side of the first door body crescent.

6. The livestock quarantine fence of claim 1, wherein a rotating handle is further arranged at the position where the connecting rod assembly is hinged with the door frame.

7. The livestock quarantine gate of claim 6, wherein the rotation handle comprises a first rotation plate, a second rotation plate, a rotation connecting plate and a rotation handle, the first rotation plate is fixedly connected to the connecting rod assembly at the position where the connecting rod assembly is hinged with the door frame, and the rotation connecting plate is fixedly arranged on the first rotation plate;

the second rotating plate is provided with an adjusting long hole, a limiting groove is arranged below the adjusting long hole, the second rotating plate is connected with the first rotating plate through a rod-shaped member penetrating through the adjusting 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 with the first rotating plate through a second elastic element.

8. The fence door of claim 1, wherein the first door body and the second door body are provided with linkage assemblies, each linkage assembly comprises two sets of follow-up assemblies and a linkage guide rod, the follow-up assemblies are arranged above and below the corresponding door body and comprise a first linkage rod and a second linkage rod, one end of the first linkage rod is hinged on the door frame, the other end of the first linkage rod is hinged with 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;

and two ends of the linkage guide rod are hinged at the corresponding ends of the hinged parts of the first linkage rod and the second linkage rod.

9. The livestock quarantine fence of claim 7, wherein another rotating handle is arranged at the position where the connecting rod assembly is hinged with the door frame through a transmission rod.

10. The fence door of claim 1, further comprising a lifting assembly disposed on the door frame for lifting the head of the livestock, wherein the lifting assembly comprises a first lifting rod, a second lifting rod and a lifting limiting rod, the first lifting rod and the lifting limiting rod are hinged on the door frame through a damping rotating shaft, the second lifting rod is hinged on the first lifting rod, and a lifting limiting hole is further disposed on the lifting limiting rod, and the second lifting rod can move in the lifting limiting hole.