JPH06225656A - Separation apparatus for walking animal - Google Patents

Abstract

PURPOSE:To simplify the structure of a separation apparatus for walking animal by opening or closing one of swing gates and opening and closing the other swing gate with a simple pushing mechanism. CONSTITUTION:A pair of right and left swing gates 3A, 3B are placed at a part of a guiding path 1. The front view of a walking animal is shielded with the swing gates in entirely closed state. Each of the gates is freely rotatable around a vertical shaft and forced to the closed state. A gate opening and closing means C switches the swing gates 3A, 3B between an entirely closed state and an intermediate state of the entirely closed and the entirely opened states and allows the push-opening of the gate by a walking animal in the intermediate state. The opening and closing means C operates the opening and closing of a swing gate 3B. A pushing part 5 is placed on the swing gate 3B. A pushing object 19 placed above the other swing gate 3A is pushed with the pushing part 5 to push and open the swing gate 3A to the intermediately opened state. The pushing part 5 or the pushing object 19 is retreated to allow the transfer of the pushing part 5 from the opened side position relative to the pushing object 19 to the closed side through the position of the pushing object 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a part of a taxiway for guiding a plurality of walking animals, wherein each of a pair of right and left swingable gates for obstructing the forward view of the walking animal in a fully closed state is provided with the taxiway. The end portion in the lateral width direction is rotatably supported around the vertical axis and is provided in a state of being biased to return to the fully closed state, and the swing gate is fully closed and fully closed. The present invention relates to a walking animal separation device which is provided with a gate opening / closing means for switching between a fully open state and a fully opened state and allowing the walking animal to push open for passage in the intermediate state.

[0002]

2. Description of the Related Art In such a walking animal separating apparatus, when weighing or inspecting a group of walking animals (for example, walking animals such as cows, sheep and horses), when forward sight is blocked The forward movement of the walking animal is reliably stopped by fully closing the pair of right and left swing-type gates by utilizing the nature of the walking animal that moves forward when the front view is opened. In order to prevent the walking animal from running past the swinging gate with the front view opened unnecessarily, it is possible to prevent weighing or inspection from being reliably performed on the moving side of the swinging gate. By setting the moving gate in the middle, the pedestrians are allowed to pass through at an appropriate speed and separated from the herd one by one (in the case of cattle, etc., this is counted as one). It was

In the prior art, if the gate opening / closing means is provided for each of the pair of right and left swing gates, the device becomes complicated and expensive, so that the gate opening / closing means can be replaced by one of the swing gates. It has been considered that the left and right gates are connected by a link mechanism, and the swing mechanism type gate, which is not provided with the gate opening / closing means, is opened / closed by the link mechanism.

[0004]

However, the above-mentioned prior art cannot solve the inconvenience that the link mechanism becomes complicated and the apparatus structure becomes complicated and expensive.

Therefore, in order to open and close the pair of left and right swing gates by one gate opening / closing means without using a complicated link mechanism, the protrusions attached to the upper portions of the left and right swing gates are swung. The pendulum type gate opening / closing means installed above the gates pushes the front and back to the left and right swing gates in the middle, while pulling the gate opening / closing means to the front side to fully close the gate. Has been proposed (see, for example, Japanese Patent Application No. 4-143796 previously proposed by the present applicant). Since this pendulum type gate opening / closing means is a mechanism that only pushes the swinging gate, it is certain that the device configuration can be simplified compared to a complicated link mechanism, but the gate is located above the walking animal. Since the opening / closing means swings, there is another problem that the walking animal may feel uneasy.

The present invention has been made in view of the above circumstances, and an object thereof is to swing one of the swinging gates by a simple pushing mechanism while opening and closing the other swinging gate. An object of the present invention is to provide a device for separating a walking animal that allows opening and closing of a gate, and at the same time does not give a feeling of anxiety to the walking animal.

[0007]

A first characteristic configuration of a walking animal separating apparatus according to the present invention is characterized in that the gate opening / closing means is
One of the pair of left and right swing gates is provided to be opened and closed, and the other swing gate is provided on the upper portion of the one swing gate as the gate is opened to the intermediate state. In order to push the gate open to the midway state, there is provided a pressing portion for pressing a pressed portion provided on the other swing gate.

In addition to the first characteristic configuration, the second characteristic configuration is such that the pressing portion is present on the opening side with respect to the pressed portion in the presence of the pressed portion. The pressing portion or the pressed portion is configured to be retractable by contact between the pressing portion and the pressed portion so that the pressing portion and the pressed portion can pass through the position and move to the closing side.

[0009]

According to the first characteristic construction of the present invention, when one of the swinging gates is opened to an intermediate state by the operation of the gate opening / closing means, the pressing portion provided on the upper portion of the swinging gate is opened. The pressed portion provided on the upper portion of the other swingable gate is pushed and operated, and the other swingable gate is also pushed open to an intermediate state. Therefore, the walking animal whose front view is opened pushes the swing gate further and passes through the swing gate. Next, when one of the swinging gates is closed by the operation of the gate opening / closing means so as to return to the fully closed state, the pressing portion provided on the upper portion of the swinging gate causes the other swinging gate to move. The pressed portion provided on the upper part of the gate is no longer pushed, and the other swinging gate also returns to the fully closed state. Therefore, it prevents a trailing walking animal whose front view is blocked from passing through the swing gate.

According to the second characteristic construction, the pressing portion provided on the upper portion of the swingable gate which is opened and closed by the gate opening / closing means is provided on the upper portion of the other swingable gate. Even when the pressing portion is located on the open side with respect to the pressed portion, the pressing portion or the pressed portion retracts when the pressing portion moves to the closing side and comes into contact with the pressed portion. The swing-type gate, which moves through the existing location of the pressing portion to the closing side and is opened / closed by the gate opening / closing means,
The other swinging gate can be pushed open halfway.

[0011]

According to the first characteristic configuration of the present invention, the mechanism for opening and closing the other swing gate in response to the opening and closing operation of the other swing gate is installed at the upper position of the swing gate. It is realized by a simple push-type mechanism that simplifies the device configuration, and the mechanism provided at the upper position of the swinging gate walks like a conventional pendulum type gate opening / closing means. Since it does not swing above the animal, there is no fear of giving anxiety to the walking animal.

According to the second characteristic construction, the swing gate which is opened and closed by the gate opening and closing means is in a fully closed state later than the other swing gate which is pushed and operated by this swing gate. Even if it is located closer to the open side than the other swing gate that is pushed, the swing gate that is opened and closed is closer to the closed side than the other swing gate. The return movement can be smoothly carried out, so that the opening and closing operation of the pair of left and right swingable gates by the gate opening / closing means can be performed without any trouble.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the overall configuration of a walking animal separation device according to the present invention. The separation device is provided with a taxiway 1 for guiding a herd of cattle, which is an example of a walking animal. A part of 1 is provided with a weighing platform 2 for weighing one cow in the herd in a state where it is separated from the cows in front of and behind it. A pair of fences 1A and 1B are provided on both sides of the weighing platform 2 and the passages before and after it.
Is provided, and the passage width of the taxiway 1 is set to be slightly wider than the width of one cow by the pair of fences 1A and 1B. At the entrance of the weighing platform 2, a pair of right and left entrance gates 3A, 3B as swing gates and a gate opening / closing mechanism 8 for opening / closing the entrance gates 3A, 3B are provided. Is provided with an exit gate 4.

The weighing platform 2 includes four load cells 21 and 2.
The four corners are supported by 2, 23, 24.
The total value of the outputs of the two load cells 21, 22, 23, 24 is the load applied to the weighing platform 2. The weighing information by the four load cells 21, 22, 23, 24 is transmitted to the control device 9 using a microcomputer, and in the control device 9, only one cow is on the weighing table 2 as described later. State, four load cells 21, 22, 23, 24
The total value of is calculated as the weighing value of the cow.

As shown in FIGS. 1 and 2, the entrance gate 3
A and 3B are bilaterally symmetrical to the portions corresponding to the entrances of the weighing platforms 2 on both sides of the fences 1A and 1B in order to pivotally support the lateral end of the guideway 1 about the vertical axis. And a pair of left and right door bodies 31 integrally attached to each of the rotation support portions 30. The pair of left and right door bodies 31 has a free end side end portion 31A formed of a hard rubber member and the other portions formed of a magnetic body, and has a structure capable of swinging open / close in a double-opening manner. Further, by a spring (not shown) attached to the rotation support portion 30, both of the pair of left and right door bodies 31 are urged to return to a fully closed state where they intersect with the guide path 1 at an intersection angle of 90 °. Then, in this fully closed state, the pair of left and right door bodies 3
The front end portion 31A of No. 1 overlaps with each other to block the forward view of the cow.

The first proximity sensor 6 for detecting the opening of the entrance gates 3A, 3B is composed of a magnetic proximity sensor and is provided on each of the fences 1A, 1B on both sides of the guideway 1. When the cow passes through the entrance gates 3A and 3B and pushes the pair of left and right door bodies 31 of the entrance gates 3A and 3B into a fully opened state, the first proximity sensor 6 causes the magnetic material portion of the door body 31 to approach. Then, the opening of the entrance gates 3A and 3B is detected.

As shown in FIG. 2, the gate opening / closing mechanism 8 is provided above the rotation support portion 30 of the gate 3B on one side (right side) of the entrance gates 3A and 3B in a state orthogonal to the guide path 1. It is attached to the existing beam 1C. And
As shown in FIGS. 3 to 5 and FIG. 6A, the electric motor 8
1 is attached to the beam 1C so that its rotation shaft 82 is coaxial with the rotation support portion 30, and a rotation plate 83 fixed to the rotation shaft 82 of the electric motor 81, and the rotation plate 83. A rotary rod 84 pivotally connected via a shaft 84A, a rod return spring 85 for biasing the rotary plate 83 and the rotary rod 84 toward the open side so that the angle formed by the rotary plate 83 and the rotary rod 84 becomes a predetermined angle, and the rotary rod 84 Locking pin 8 provided on the free end side
And 6 are provided. Further, the locking pin 86 is supported by the plate member 10 attached to the fence 1B, and the locking pin 86 is attached to the motor rotating shaft 8.
The guide plate 87 that guides the rotation support portion 30 so as to approach the outer peripheral portion of the rotation support portion 30 when it rotates clockwise when viewed from above with respect to 2 and the locking pin 86 that rotates and supports it when further rotated. A release plate 88 is provided for separating from the outer peripheral portion of the portion 30. A locking piece 89 for receiving and engaging the locking pin 86 is provided at a predetermined position on the outer peripheral portion of the rotation support portion 30. The guide plate 87 ′ and the release plate 8 having the same structure are provided at positions 180 ° rotationally symmetrical to the installation positions of the guide plate 87, the release plate 88, and the locking piece 89.
8'and a locking piece 89 'are provided.

As shown in FIGS. 1 to 4, at the upper part of the entrance gate 3B on the right side, as it is opened from the fully closed state to the halfway state between fully closed and fully opened (X position in FIG. 3), the other In order to push the (left side) entrance gate 3A open halfway, the push pin 5 as a pushing part for pushing and operating the elongated rail 19 as the pushed portion provided on the other entrance gate 3A is It is provided on the tip side of the support arm 5A supported by the body 31. The rail 19 is attached to the door body 31 of the left entrance gate 3A via the support portion 19a.

As shown in FIG. 4, the push pin 5 is normally located closer to the rail 19 than the rail 19 (on the left side in the left-right direction in the figure).
In the state where it is located on the open side (right side in the figure) from 9,
The push pin 5 is configured to be retractable by contact between the push pin 5 and the rail 19 so that the push pin 5 can move to the closing side after passing through the existing position of the rail 19. . Specifically, the push pin 5 is
A first rod-shaped body 54a fixed to the support arm 5A, a second rod-shaped body 54c pivotally connected to the first rod-shaped body 54a via a shaft 54b, and a second rod-shaped body 54c at a shaft 54b in FIG. A restricting body 54d for allowing the bending in the direction a in the direction of arrow B and restricting the bending in the direction b in the arrow in FIG.
The second rod-shaped body 54c is constituted by a spring 54e attached in a state in which the second rod-shaped body 54c is urged in a direction of pressing the regulating body 54d. Then, when the push pin 5 moves from the state of being located on the open side (right side in the drawing) of the rail 19 to the close side, the second rod-shaped body 54c bends in the direction of the arrow a, and the push pin 5 is moved to the rail 19. It is designed to be able to get over and be located on the closed side.

Operation of the gate opening / closing mechanism 8 is shown in FIG.
More specifically, when the electric motor 81 rotates from the initial position shown in (a) (the entrance gates 3A and 3B are in the fully closed state at this time, that is, the Y position in FIG. 3), the locking pin 86 is attached to the guide plate 87. It is guided so as to come close to the outer peripheral portion of the rotation supporting portion 30 while contacting with each other, and the locking pin 86 is attached to a corner portion formed by the outer peripheral portion of the rotation supporting portion 30 and a locking piece 89 provided on the outer peripheral portion.
Are engaged ((b)). Then, the electric motor 81 is further rotated while maintaining this engagement state, and the electric motor 81 is stopped at the position immediately before the locking pin 86 hits the release plate 88 ((c)). At this time, the entrance gates 3A and 3B are in the intermediate state (X position in FIG. 3). here,
As will be described later, when it is detected that a cow has entered the entrance gates 3A and 3B and the electric motor 81 is further rotated, the locking pin 86 is disengaged from the engaged state to the outside by the release plate 88 (( )), The rotation support portion 30 swings so as to return to the initial position ((e)). Then, the electric motor 81 rotates to the position shown in (f), which is another initial position rotated by 180 degrees with respect to the initial position shown in (a), and stops. Therefore, the gate opening / closing mechanism 8 performs one operation at 1/2 rotation of the electric motor 81. still,
Although not shown, in order to stop the electric motor 81 at the initial position ((a) and (f)) and the position ((c)) immediately before the locking pin 86 contacts the release plate 88, the electric motor 81 is stopped. A proximity switch for detecting the rotation phase of the rotary shaft 82 is provided, and the control device 9 described later controls the electric motor 81 based on the information of the proximity switch.

In the state shown in FIG. 6C, the rotation support portion 3
Although the locking piece 89 of 0 is pushed by the locking pin 86 and the entrance gates 3A and 3B are operated so as to open in the middle state, the movement of the entrance gates 3A and 3B toward the fully open side is restricted. In this state, the following cow is provided with a forward field of view to urge the cow to move forward into the weighing table 2 so that the cow can enter the weighing table 2 through the entrance gates 3A and 3B. It is in an acceptable state. On the other hand, in the states shown in FIGS. 6A and 6F, since the locking piece 89 of the rotation support portion 30 is out of the engaged state with the locking pin 86, the inlet gates 3A and 3B are in the fully closed state. This state is a state in which the forward view of the following cow is obstructed, the motivation of the cow to move forward is discouraged, and the cow is prevented from entering the weighing platform 2.

If the entrance gates 3A, 3B are opened in the opposite direction when the entrance gates 3A, 3B are fully closed,
Since the rotation support portion 30 of the right entrance gate 3B is not engaged with the gate opening / closing mechanism 8 and can freely rotate around its axis (see FIG. 6A), the right entrance gate 3 is provided.
When B opens in the opposite direction, the entrance gate 3B on the right side
Only the left side gate gate 3A opens in the opposite direction.
When the door is opened in the opposite direction, the inlet gate 3A on the left side and the inlet gate 3B on the right side both of which are pushed by this and open in the opposite direction, but in both cases, a problem occurs in the operation of the gate opening / closing mechanism 8. Absent.

As shown in FIG. 1, the exit gate 4 is rotated symmetrically around a pair of left and right longitudinal axes, which are symmetrically erected at the portions corresponding to the exits of the weighing platform 2 on the fences 1A and 1B on both sides. It is provided with a freely rotatable shaft 4a and a pair of left and right door bodies 4b integrally attached to the respective rotatable shafts 4a. The pair of left and right door bodies 4b of the exit gate 4 is made of a magnetic material, and has a structure capable of swinging open / close in a double-opening manner like the pair of left and right door bodies 31 of the entrance gates 3A and 3B. In a fully closed state in which both the pair of left and right door bodies 4b intersect with the guideway 1 at a crossing angle of 90 °, the front end portions of the pair of left and right door bodies 4b are slightly separated from each other to maintain the forward view of the cow. It is like this. Further, a spring (not shown) attached to the rotating shaft 4a is urged to return to the fully closed state.

The second proximity sensor 7 for detecting the opening of the exit gate 4 is composed of a magnetic proximity sensor and corresponds to the exit of the weighing platform 2 in each of the fences 1A and 1B on both sides of the taxiway 1. It is provided in the place to do. Then, the cow passes through the exit gate 4 and the pair of left and right door bodies 4 of the exit gate 4
When b is fully opened and opened, the second proximity sensor 7 detects the approach of the door body 4b and detects the opening of the exit gate 4.

As shown in FIG. 1, the control device 9 receives the weighing information from the four load cells 21, 22, 23 and 24, the detection information from the first proximity sensor 6 and the second proximity sensor 7. In addition, a drive signal for operating the electric motor 81 is output from the control device 9. Then, the control device 9 controls the electric motor 8 based on the detection information of the first proximity sensor 6 and the second proximity sensor 7.
The gate opening / closing control section 9A for controlling the operation of No. 1 and the weighing value calculating section 9B for calculating the weighing value of the cow based on the weighing information from the four load cells 21, 22, 23, 24 are configured. Therefore, the entrance gates 3A, 3A are controlled by the gate opening / closing mechanism 8 and the gate opening / closing controller 9A.
Gate opening / closing means C is configured to switch B between the fully closed state and the midway state, and in the midway state, allow the walking animal to push open for passing.
Further, from the above, the gate opening / closing means C opens / closes one (right side) entrance gate 3B of the pair of left and right entrance gates 3A, 3B.

Next, the gate opening / closing control section 9A of the control unit 9
However, based on the detection information of the first proximity sensor 6 and the second proximity sensor 7 and the weighing information of the weighing platform 2, the entrance gates 3A, 3
In order to switch B between the fully closed state and the intermediate state,
The operation over time when controlling the operation of the gate opening / closing mechanism 8 will be described.

As shown in FIG. 7 (a), the state where the preceding cow has passed through the exit gate 4 and no cow is present on the weighing platform 2 is the second condition.
Information of the proximity sensor 7 and the load cells 21, 22, 2
When detected by the weighing information of 3,24, the control device 9
Switches the entrance gates 3A and 3B to the intermediate state (the gate opening / closing mechanism 8 is operated to the position shown in FIG. 6C). Therefore, the front view of the cow located in front of the cow opens, and the cow is motivated to move forward and tries to enter the weighing table 2. The entrance gates 3A and 3B, which are in the state of being fully closed and fully opened, are allowed to rotate to the open side, and are pushed open by the passage of the cow to be in the fully opened state, as shown in FIG. As shown, the cow can enter the weighing platform 2.

When the first proximity sensor 6 detects the approach of the pair of left and right door bodies 31 and the passage of the cow at the entrance gates 3A and 3B is detected, the control device 9 controls the entrance gates 3A and 3B. Switch to fully closed state (gate opening / closing mechanism 8
To the positions shown in FIGS. 6 (e) to (f)). In that state, as shown in FIG. 7 (c), the cows are at the entrance gates 3A and 3B.
When entering the weighing platform 2 through the entrance, the entrance gates 3A, 3
The entrance gates 3A and 3B are rotated to the closing side by the action of the spring for urging B in the closing direction, and are brought into the fully closed state.

Subsequently, the cow reaching the front of the exit gate 4 maintains the forward view of the cow even when the exit gate 4 is in the fully closed state, so that the cow is motivated to move forward,
It tries to move forward and pass the exit gate 4. Then, as shown in FIG. 7 (d), the exit gate 4 is pushed open by the passage of the cow to be in a fully opened state, and the second proximity sensor 7 detects the approach of the pair of left and right door bodies 4b, and the weighing is performed. The passage of cattle at the exit of the platform 2 is detected. At this time, the control device 9 recognizes that there is no cow on the weighing platform 2 if the weighing value of the weighing platform 2 at this point is smaller than the set value, and as shown in FIG. , Entrance gate 3
A and 3B are switched to the midway state. Therefore, the front view of the cow located in front of the cow opens, and the cow is motivated to move forward and tries to enter the weighing table 2.

The second proximity sensor 7 is a pair of left and right door bodies 4.
If the weighing value of the weighing unit 2 is larger than the set value when the approach of b is detected, it is determined that another cow is on the weighing platform 2 immediately after the cow passing through the exit gate 4. Then, the control device 9 controls the operation of the gate opening / closing mechanism 8 so as not to switch the entrance gates 3A and 3B to the midway state. That is, the entrance gates 3A and 3B are maintained in the fully closed state. Then, when the rear cow of the two cows has advanced and is in the state shown in FIG. 7D, the control device 9 stores the information of the second proximity sensor 7 and the information of the second proximity sensor 7. The same processing as above is performed based on the information of the measured value. The set value is obtained by collecting a large amount of weighing value data in the state of FIG. 7D (state where the cow is passing through the exit gate 4), and based on the collected data, for example, A value that is the same or larger, but sufficiently smaller than the load of one cow, is selected and set appropriately.

[Other Embodiments] Next, other embodiments will be listed. In the above embodiment, the first proximity sensor 6 and the second proximity sensor 7 are the swing-type gates 3A, 3B on the entrance side of the walking animal.
And when detecting passage at the outlet of the weighing platform 2,
Although the state where the cow is passing is detected, the state where the passing is started or the state where the passing is completed may be detected.

In the above embodiment, the gate opening / closing means C
In the above, an example of opening and closing the right swing gate 3B of the pair of left and right swing gates 3A and 3B has been described. The swing gates 3A and 3B may be opened and closed.

In the above embodiment, the first proximity sensor 6 and the second proximity sensor 7 are magnetic proximity sensors, but may be optical sensors or the like.

In the above-described embodiment, the pressing portion (push pin 5) and the pressed portion (rail 19) provided on the upper portions of the one swing gate 3B and the other swing gate 3A are provided on the door body 31. Although the one attached to the edge is illustrated, other than this, for example, it may be provided at the upper lateral position of the door body 31.

In the above-described embodiment, the pressing portion is provided with the push pin 5.
Although the pressed portion is configured by the long rail 19 as an example, the specific configurations of the pressed portion and the pressed portion are not limited to the above. Further, in the above-described embodiment, the pressing portion 5 is pressed so that the pressing portion 5 can be moved from the state in which it is located on the opening side of the pressed portion 19 to the closing side by passing through the location where the pressed portion 19 exists. An example is shown in which the member is configured to be retractable when it comes into contact with the portion 19, but conversely,
The pressed portion 19 may be configured to be retractable, or both the pressing portion 5 and the pressed portion 19 may be configured to be retractable. Further, the retracting mechanism is not limited to the swinging type, but may be a mechanism that slides in the vertical direction and retracts when it comes into contact.

In the above embodiment, the case where the gate opening / closing mechanism 8 is configured to be operated by the electric motor 81 has been described, but the electric motor 81 may be replaced by a cylinder, for example.

In the above embodiment, the control device 9 automatically opens and closes the pair of right and left swing gates 3A and 3B on the entrance side. However, a switch for instructing the operation of the gate opening / closing mechanism 8 is provided. An operator who monitors a walking animal operates the switch to swing the gate 3
The opening / closing operation of A and 3B may be performed.

The walking animal separating apparatus of the present invention can be applied not only to the case of weighing as in the above-described embodiment, but also to the case of processing such as inspection. Also,
It may be applied when treating walking animals other than cattle, such as goats, horses and chickens.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a plan view showing the overall configuration of a walking animal separation device.

FIG. 2 is a front view showing a main part of a walking animal separation device.

FIG. 3 is a plan view showing the operation of the gate opening / closing means.

FIG. 4 is a side view showing a gate opening / closing means.

FIG. 5 is a front view showing a main part of a gate opening / closing means.

FIG. 6 is a plan view illustrating the operation of the gate opening / closing means.

FIG. 7 is a plan view illustrating the operation of the walking animal separation device.

[Explanation of symbols]

 1 Taxiway 3A Swing-type gate 3B Swing-type gate C Gate opening / closing means 19 Pressed part 5 Pressing part

Claims (2)

[Claims] 1. A taxiway (1) for guiding a plurality of walking animals.
A pair of left and right swing gates (3A, 3B) that obstruct the forward field of view of the walking animal in the fully closed state respectively rotate the lateral ends of the taxiway (1) around the vertical axis. The swing gates (3A, 3B) are movably pivotally supported and are urged to return to the fully closed state, and the swing gates (3A, 3B) are in the fully closed state and an intermediate state between fully closed and fully opened. And a gate opening / closing means (C) for allowing the walking animal to push open for passage in the midway state. Is provided so as to open / close one of the pair of left and right swing gates (3A, 3B), and the one swing gate (3B) is placed above the one swing gate (3B). As it is opened, the other swing gate (3A) is in the above-mentioned intermediate state. In order to push open, the other pressing unit (5) separator walking animals provided for operating press the pressed portion (19) provided in the upper portion of the swing-type gate (3A). 2. The pressing portion (5) is the pressed portion (1).
In a state in which the pressing portion (5) is located on the open side with respect to 9), the pressing portion (5) and the covered portion are moved so that the pressing portion (5) can pass through the existing portion of the pressed portion (19) and move to the closing side. The walking animal separation device according to claim 1, wherein the pressing portion (5) or the pressed portion (19) is configured to be retractable by contact with the pressing portion (19).