JPH0880135A - Device for separating walking animal - Google Patents

Abstract

PURPOSE: To provide a device for separating walking animals, capable of rapidly separating walking animals while suppressing astonishment of the walking animals as much as possible. CONSTITUTION: In a device for separating walking animals in which a rocking type gate SG for screening the front visual range of the walking animals in the whole closed state is installed on a part of a guide path P for introducing plural walking animals with the end of the guide path P in the width direction pivoted rotatably around the center of a vertical shaft and in a state forced to the wholly closed state, the rocking type gate SG is changed over from the wholly closed state to medium state between the wholly open state and the wholly closed state and a gate opening and closing means GO allowing itself as to pass the walking animals in the medium state is provided, the gate opening and closing means GO is constituted in such a way that the rocking type gate SG is changed over from the wholly closed state to the medium state in a state in which the opening rate of the rocking type gate SG is relatively reduced in the initial operation and final operation in a process for opening operation of the rocking type gate SG.

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, and a swinging gate for obstructing the forward field of view of the gait animal in a fully closed state is provided with a lateral end portion of the taxiway. Is rotatably pivoted about a vertical axis and is provided in a state of being urged to return to the fully closed state, and the swing gate is in the fully closed state, and between the fully closed and fully opened states. The present invention relates to a device for separating a walking animal, which is provided with gate opening / closing means for switching to the state and allowing the walking animal to push open for passing in the midway state.

[0002]

2. Description of the Related Art Such a walking animal separating apparatus appropriately separates walking animals that collectively move on a taxiway in a state of being close to each other in order to perform some processing such as inspection on the walking animals. It is a device for separating. This walking animal is separated by opening and closing the swing gate. That is, a walking animal generally has a property of advancing when the forward field of view is open and stopping when the forward field of view is blocked.Therefore, by utilizing this property, the swinging gate is opened to an intermediate state and operated. Pass the walking animal through the swing gate,
After the passage is completed, the swinging gate is fully closed until it is appropriately separated from the walking animal that has passed the passage, and the following walking animal is stopped at a position on the front side of the swinging gate. By the way, when the gate opening / closing means opens the swinging gate halfway, conventionally, the swinging gate has been opened at a constant opening speed. The opening operation of the swinging gate to the intermediate state needs to be executed at a somewhat high opening speed in order to quickly separate the walking animal.

[0003]

However, when a walking animal is present in front of the swingable gate, the swingable gate suddenly starts to open at a high speed from the fully closed state,
If the swing gate that is open at a high speed suddenly stops, the walking animal may be surprised, and the behavior of the walking animal may become unstable. The present invention has been made in view of the above circumstances, and a first object of the present invention is to provide a walking animal that can rapidly separate the walking animal while suppressing astonishing the walking animal as much as possible. The point is to provide a separation device. The second purpose is to achieve the first purpose with a simple configuration.

[0004]

A walking animal separating apparatus according to the present invention comprises a swinging gate for blocking a forward view of a walking animal in a fully closed state in a part of a guideway for guiding a plurality of walking animals. The lateral end of the guide path is rotatably supported around a vertical axis and is provided in a state of being biased to return to the fully closed state, and the swing gate is provided in the fully closed state. , Switching between an intermediate state of fully closed and fully open, and in the intermediate state is provided with a gate opening and closing means that allows the walking animal to push open for passage,
The first characteristic configuration is such that the gate opening / closing means is in a state in which the opening speed of the swinging gate becomes relatively slow at the initial opening operation end and the opening operation end of the opening operation of the swinging gate. The swing gate is configured to be switched from the fully closed state to the midway state.

A second characteristic configuration is the same as the first characteristic configuration, wherein the gate opening / closing means is formed so as to project from an end portion in the lateral width direction of the swing gate and swings integrally with the swing gate. And a swinging operation piece for swinging the projecting piece by the engaging action of the engaging portion, and the swinging operation piece is rotationally driven. And an engaging position of the engaging portion with respect to the projecting piece in the opening operation initial stage and the opening operation end period in the process of opening the swing gate by the rotational driving of the motor. In addition, it is configured to be located on the swinging free end side of the projecting piece.

[0006]

According to the first characteristic construction of the present invention, the opening speed of the swinging gate when the gate opening / closing means switches from the fully closed state to the midway state is slow at the beginning of the opening operation, that is, at the beginning of opening, and thereafter. Make it faster, and it will become slower again at the end of opening operation, that is, near the end of opening. As a result, even if a walking animal is present in front of the swinging gate, the movement of the swinging gate does not change so rapidly that the walking animal is surprised to see the movement of the swinging gate. Can be suppressed. Further, the time required to open the swinging gate can be maintained to some extent shorter than the case where the opening speed is reduced over the entire period of switching from the fully closed state to the midway state.

According to the second characteristic configuration of the present invention, when the motor rotationally drives the rocking operation piece, the projecting piece engaged with the rocking operation piece is rocked to rock the projecting piece. The swingable gate is opened and operated together with. At this time, in the initial stage of the swing gate opening operation and the final stage of the swing operation, the engagement state between the projecting piece and the swing operation piece is such that the engagement position is located on the swing free end side of the projecting piece. That is, the ratio of the swing amount of the protruding piece to the rotation amount of the swing operation piece becomes small. Therefore, even if the motor rotationally drives the rocking operation piece at almost the same speed from the fully closed state to the midway state of the rocking type gate, in the opening operation initial stage and the opening operation ending stage of the rocking type gate, The amount of swing of the protruding piece that swings integrally with the swing gate becomes relatively small, and the opening speed of the swing gate becomes relatively slow.

[0008]

According to the above-mentioned first characteristic configuration, while keeping the walking animal from being surprised as much as possible, the time required for the opening operation of the rocking type gate is kept to a certain degree to allow walking. The present invention provides a walking animal separation device that can rapidly separate animals. The second characteristic configuration is a simple configuration in which the engagement position between the swing operation piece and the protruding piece is simply changed, and the effects of the first characteristic configuration can be obtained.

[0009]

EXAMPLE An example in which the walking animal separation device of the present invention is applied to a cow weighing apparatus, which is an example of a walking animal, will be described below with reference to the drawings. First, the overall configuration of the apparatus will be described with reference to FIGS. 1 and 2. The weighing device is a weighing unit M that weighs the cow while allowing the cow to walk through.
And a separation gate G for separating cows from the herd one by one and leading them to the weighing section M. The weighing unit M and the separation gate G are separately configured, and the weighing unit M is provided in a part of the guide path P for guiding the herd of cattle, and the separation gate G is provided in front of the entrance of the weighing unit M. There is. The taxiway P is formed by the fences 1 located on both the left and right sides when viewed from the direction of travel of the cow.

The weighing unit M includes a weighing platform 2, an exit gate 3 provided at an outlet of the weighing platform 2, a fence 4 provided on both sides of a passage on the weighing platform 2, a controller 5, and a weighing unit. And a pair of transport devices 6 for transporting M. Reference numerals 21 in the figure are load cells provided so as to be grounded at the grounding portion 21a and to support the four corners of the weighing platform 2, respectively. The total value of the outputs of these four load cells 21 is the weighing platform. It becomes the load applied to 2.

As shown in FIG. 2, a transmitter T for transmitting the individual identification information (individual number) of the cow is attached to the ankle of the right hind leg of the cow, and the transmitter 2 is attached to the weighing platform 2 from the transmitter T. An antenna 22 for receiving the transmitted individual number is provided. The transfer device 6 includes a wheel 61 and an arm portion 62 that can switch the wheel 61 between a transfer position in which the wheel 61 projects below the ground contact portion 21a of the load cell 21 and a ground position in which the wheel 61 retracts upward. That is, the weighing unit M can be transported by switching the arm unit 62 to the transporting position, transports to a desired position in that state, and fixedly grounds by switching the arm unit 62 to the grounding position at that position. It is configured as follows. On each of the fences 4 on both sides, a handle 41 to be gripped when transporting the weighing section M and a cow are restricted from walking near both ends of the passage on the weighing platform 2 to walk in the center of the passage. A foot approaching portion 42 is provided for this purpose.

The separation gate G includes an entrance gate 7 having a pair of left and right entrance door bodies 74A and 74B that can be freely opened and closed about a vertical axis, and a gate opening / closing mechanism for opening and closing the entrance door body 74B of the entrance gate 7. 8 and. The control device 5 of the weighing unit M has a key panel 5 for starting and instructing weighing.
1. A digital display 52 for displaying and outputting weighing results (individual number of cow and its weight), a printer 53 for printing out weighing results, and the like. Also, load cell 2
The weight processing unit (not shown) that controls the weight of the cow based on the time series data of the weighing value from 1 and communicates with the transmitter T via the antenna 22, and the cow as described later. A gate opening / closing control unit 54 for controlling the gate opening / closing mechanism 8 so as to open / close the entrance gate 7 so as to guide only one head to the weighing platform 2 is also provided inside the control device 5.

Next, the entrance gate 7 will be described with reference to FIGS. 3 and 5. The entrance gate 7 is rotated around the vertical axis with respect to the pair of left and right platform parts 71, the pair of left and right columnar bodies 72 standing on the upper parts of the pair of left and right platform parts 71, and the pair of left and right columnar bodies 72. A pair of left and right rotation support portions 73 that are movably provided, a pair of left and right entrance door bodies 74A and 74B integrally attached to the pair of left and right rotation support portions 73, and a pair of left and right base portions 71 that stand upright. And fences 1 and 4 before and after
And a pair of right and left fences 75 provided so as to be located between the pair of right and left columns, and a beam body 76 connecting the upper ends of the pair of left and right columnar bodies 72.

The pair of left and right entrance door bodies 74A and 74B are constructed so as to swing open and close in a double-opening manner and, as shown in FIG. 3, serve as a biasing means attached to the rotation supporting portion 73. The springs 77A and 77B urge the return to the fully closed state where the guideway P intersects at a crossing angle of 90 °.
Of the pair of left and right entrance door bodies 74A, 74B, the side that is opened and closed by the gate opening / closing mechanism 8, that is, the entrance door body 74B on the right side in the traveling direction is a plastic plate whose upper and lower ends are bent for reinforcement. The entrance door body 74A that is configured and is not opened / closed by the gate opening / closing mechanism 8, that is, the entrance door body 74A on the left side in the traveling direction is configured by attaching a plastic plate to the metal frame 74Af. By configuring the pair of left and right entrance door bodies 74A and 74B in this way,
The moment of inertia about the axis of rotation of the entrance door 74B on the side opened / closed by the gate opening / closing mechanism 8 is smaller than the moment of inertia about the axis of rotation on the entrance door 74A on the side not opened / closed by the gate opening / closing mechanism 8. ing.

Of the springs 77A and 77B attached to the pair of left and right rotation supporting portions 73, the gate opening / closing mechanism 8 is also provided.
The spring 77A attached to the rotation support portion 73 that supports the entrance door body 74A that is not opened and closed is a spring attached to the rotation support portion 73 that supports the entrance door body 74B that is opened and closed by the gate opening / closing mechanism 8. A spring constant larger than that of 77B is adopted, and as a result, the biasing force of the spring 77A acting on the entrance door body 74A on the side that is not opened / closed by the gate opening / closing mechanism 8 is on the side opened / closed by the gate opening / closing mechanism 8. It is larger than the biasing force of the spring 77B acting on the entrance door body 74B. Further, the pair of left and right entrance door bodies 74A, 74B have free end portions 74Ah, 74B, respectively.
h is made of a hard rubber material, and in the fully closed state, the front end portions of the pair of left and right entrance doors 74A and 74B on the free end side overlap with each other to block the forward view of the cow. It has become. Therefore, the pair of left and right door bodies 74
A and 74B function as a swinging gate SG that blocks the forward field of view of the walking animal in the fully closed state.

As shown in FIG. 5, a pair of entrance door bodies 74
An entrance side proximity sensor S1 is provided which detects that the left entrance door body 74A of A and 74B is opened by a first set angle or more. The entrance-side proximity sensor S1 is composed of a magnetic proximity sensor, and is attached to the left-side fence 75 while being positioned behind the left-side entrance door body 74A.
And a detected portion S1b which is attached to the entrance door body 74A and is formed of a magnetic material in an arc shape around the rotation axis of the rotation support portion 73. The detecting portion S1a and the detected portion S1b are arranged so as to be close to each other when the entrance door body 74A is opened at the first set angle (for example, 55 °) or more. That is, the entrance-side proximity sensor S1 is O when the entrance door body 74A is opened at the first set angle or more.
It is configured to output the N signal. Note that in FIG. 5, the gate opening / closing mechanism 8 is not shown in order to make the drawing easy to see.

The gate opening / closing mechanism 8 will be described below. As shown in FIG. 2, the gate opening / closing mechanism 8 is provided above the rotation support portion 73 of the entrance gate 74B on the right side. Hereinafter, description will be given with reference to FIGS. 6 and 7 in which the cover is removed to make the internal structure visible. The rotary shaft 30 of the entrance door body 74B penetrates through the support base 10 that extends in the horizontal direction from the lower end of the mounting plate 11 fixed to the columnar body 72, and the lateral width direction end portion of the swing gate SG. A cylindrical lever 84, which is a protruding piece that swings integrally with the swingable gate G, is attached to the upper end of the rotary shaft 30 located at the position so as to penetrate the rotary shaft 30 and project to one side in the horizontal direction. Has been.

An arm bar 83 formed in a substantially rectangular plate shape, which is a rocking operation piece for rocking the lever 84,
Support stand 1 which is horizontal and rotatable about the vertical axis.
0, and the mounting plate 11 has an electric motor 8 which is a motor for rotationally driving the rotary shaft of the arm bar 83.
1 is attached. A roller 83a, which is an engaging portion that engages with the lever 84, is provided on the lower surface side of both ends of the arm bar 83.
Is rotatably attached around a vertical axis.
That is, the mounting height of the lever 84 is equal to the electric motor 81.
The roller 83a of the arm bar 83 attached to the rotary shaft 82 of the arm bar 83 is rotated at the same height as the roller 83a of the arm bar 83. 74B swings. Further, the proximity sensor 15 that detects the end portion of the arm bar 83 is attached to the attachment plate 11.

The operation of the gate opening / closing mechanism 8 will be described with reference to FIG. Although FIG. 7A shows the initial position, at this position, the entrance door body 74B is at the position indicated by Y in FIG. 1 in the fully closed state. When the electric motor 81 rotates from the initial position, the roller 83a of the arm bar 83 engages with the lever 84 and starts pushing the lever 84, as shown in FIG. 7B. The engagement position of the roller 83a with respect to the lever 84 is, as shown in FIG.
7 as the arm bar 83 rotates, that is, as the entrance door 74B opens.
As shown in (c), the lever 84 moves to the base end side.

When the arm bar 83 further rotates, the engagement position between the roller 83a and the lever 84 moves to the free end side again, and when the arm bar 83 rotates to the position shown in FIG. 7D, the proximity sensor 15 causes the arm bar 83 to move. The end of 83 is detected and the electric motor 81 is stopped. In the state shown in FIG. 7D, the entrance door body 74B is in the midway state indicated by X in FIG. That is, by the rotational drive of the electric motor 81,
In the process of opening the entrance door body 74B from the fully closed state to the midway state, the engagement position of the roller 83a with respect to the lever 84 at the initial stage of the opening operation and the final stage of the opening operation is relatively located on the swing free end side of the lever 84. Of.

As a result, when the electric motor 81 rotationally drives the arm bar 83 at a substantially constant speed, the entrance door 74B
The opening speed of is relatively slow at the beginning and end of the opening operation. In the meantime,
The arm bar 83 and the lever 84 are substantially orthogonal to each other, and the urging force of the spring 77B for urging the inlet door body 74B to return to the fully closed state acts in the longitudinal direction of the arm bar 83 to easily maintain the intermediate state. I am trying.

Next, when the cow enters the entrance gate 7 and pushes the entrance door bodies 74A and 74B open, the lever 84 is moved to the position shown in FIG.
Since it swings clockwise from the position (d), the arm bar 83 allows the lever 84 to swing. When the cow pushes the entrance door bodies 74A and 74B open and the entrance proximity sensor S1 detects the opening, the electric motor 81 rotates the arm bar 83 to the position shown in FIG. In this state, the roller 83a of the arm bar 83
Comes out of the swing locus of the lever 84, and the roller 83a and the lever 84 are in a non-interference state. Therefore, when the cow has completed passing through the entrance gate 7, the entrance door body 74A,
74B is urged by springs 77A and 77B,
Return to the fully closed state. From the above, the gate opening / closing mechanism 8 is
One operation is carried out with 1/2 rotation of the electric motor 81.

Since the entrance door body 74B has a relatively small biasing force of the spring 77B and a relatively small moment of inertia as described above, an electric motor for driving the entrance door body 74B to rotate. 81 does not necessarily have to be so powerful. Further, in the entrance door body 74A, the biasing force of the spring 77A is relatively large as described above, and
Since the moment of inertia is also relatively large, when the succeeding cow comes into contact with the entrance door body 74A that returns to the fully closed state, the force acting on the cow is sufficiently secured, and the cow's willingness to move forward is appropriately lost. Let them do it.

Next, the exit gate 3 will be described with reference to FIGS. 4 and 8. The exit gate 3 includes a pair of left and right columnar bodies 31 and a pair of left and right columnar bodies 3 which are provided upright at locations corresponding to the outlet portions of the weighing platform 2 on the left and right fences 4, respectively.
It is composed of a pair of left and right rotation support parts 32 rotatably provided around the vertical axis with respect to each one, and a pair of left and right outlet door bodies 33A and 33B integrally attached to the pair of left and right rotation support parts 32, respectively. . The pair of left and right outlet door bodies 33A and 33B are structured so as to open and close by swinging in a double-opening manner, and a spring (not shown) attached to the rotation support portion 32 causes the guide path P and a predetermined first passage. 2 set angle α (α <90 °, for example, α
= 60 °) and the state of crossing (the tip of each free end side is positioned in front of the imaginary line connecting the axial cores of the pair of left and right rotation supporting portions 32) is biased to the origin position. ing. Furthermore, the free end side end portions 33Ah and 33Bh of the pair of left and right outlet door bodies 33A and 33B are formed of a hard rubber material. Further, in order to keep the forward view of the cow and to motivate the cow to move forward while the pair of left and right outlet door bodies 33A and 33B are in the origin position, in the state of the origin position, the pair of left and right outlet doors are provided. The free ends of the bodies 33A and 33B are separated from each other. Moreover, since the pair of left and right outlet door bodies 33A and 33B are in a state of being slightly opened forward at the origin position, this also encourages the motivation of the cow to move forward.

As shown in FIG. 8, a pair of outlet door members 33 are provided.
An outlet-side proximity sensor S2 is provided which detects that the right-side outlet door 33B of A and 33B is opened from the origin position by a third set angle or more. The exit-side proximity sensor S2 is also composed of a magnetic proximity sensor, and is attached to the detection portion S2a attached to the upper end portion of the columnar body 31 and the rotation support portion 32 so as to rotate integrally. It is composed of a detected portion S2b formed of a magnetic material in an arc shape with the rotation axis of the rotation support portion 32 as the center. The detection part S2a and the detected part S2b are arranged so as to be close to each other when the outlet door 33B is opened at the third set angle (for example, 10 °) or more. That is, the outlet-side proximity sensor S2 is configured to output an ON signal when the outlet door body 33B is opened from the origin position by the third set angle or more.

Next, the control operation of the gate opening / closing control section 54 will be described. As shown in FIG. 1, the gate opening / closing control unit 54 controls the electric motor 81 of the gate opening / closing mechanism 8 based on the detection information of each of the entrance side proximity sensor S1 and the exit side proximity sensor S2. The state shown in FIG. 9A is
This is a state at the time of starting the apparatus in a state where there is no cow on the weighing platform 2, and the gate opening / closing control unit 54 rotationally drives the electric motor 81 so as to switch the entrance door body 74B to the intermediate state. Therefore, the cow C1 located in front of the entrance gate 7 opens the front field of view, and is motivated to move forward to enter the weighing platform 2.

As shown in FIG. 9B, when the cow C1 enters, the pair of entrance door bodies 74A and 74B are pushed open, and in the process of pushing and opening, the opening angle of the entrance door body 74A is 55 °. At the front and rear, the proximity sensor S1 from the entrance side turns O
An N signal is output, and based on this, the gate opening / closing control unit 54 rotates the arm bar 83 to the position shown in FIG. As shown in FIG. 9C, when the cow C1 passes through the entrance gate 7 and the whole cow C1 is placed on the weighing platform 2, a pair of entrance doors 74
A and 74B are in the fully closed state by the biasing force of the springs 77A and 77B. Therefore, the entrance gate 7
The cow C2 that has reached the front side of the front of the vehicle is blocked from the forward view and thus is discouraged from moving forward, and stops before the entrance gate 7. In the state shown in FIG. 9 (C), the weighing section M has the cow C1 on the weighing platform 2.
Is weighed.

Even when the exit gate 3 is in the origin position, the front view of the cow C1 is maintained, so that the exit gate 3
As shown in FIG. 9 (d), the cow C1 that has reached the front side of the vehicle moves forward while pushing and opening the pair of outlet door bodies 33A and 33B of the outlet gate 3. When the outlet door 33B is opened 10 ° or more from the origin position as the cow C1 passes through the outlet gate 3, an ON-side signal is output from the outlet-side proximity sensor S2, and based on this, gate opening / closing control is performed. The portion 54 rotationally drives the electric motor 81 so as to switch the entrance door body 74B to the intermediate state. Therefore, the cow C2 in front of the entrance gate 7 opens the forward field of view and is motivated to move forward to enter the weighing platform 2. When the cow C1 completes passing through the exit gate 3, the pair of exit door bodies 33A, 3 of the exit gate 3
3B comes to the origin position by the biasing force of the spring. Therefore, the gate opening / closing mechanism 8 and the gate opening / closing control unit 54 switch the pair of left and right entrance door bodies 74A and 74B between the fully closed state and the intermediate state between fully closed and fully opened, and in the intermediate state, the walking animal passes through. Functions as a gate opening / closing means GO that allows push-opening.

[Other Embodiments] Other embodiments will be listed below. In the above embodiment, the engaging position of the roller 83a of the arm bar 83 with respect to the lever 84 is moved so that the opening speed of the entrance door body 74B is relatively slow in the initial opening operation and the final opening operation. However, the rotary shaft 30 of the entrance door body 74B is directly driven to rotate by the motor so that the rotation speed of the motor is relatively slowed in the initial opening operation and the final opening operation.
The opening speed of B may be relatively slow in the initial opening operation and the final opening operation.

Further, the rotation shaft of the motor and the rotation shaft of the entrance door body 74B are connected via a gear mechanism capable of shifting, the rotation speed of the motor is substantially constant, and the gear mechanism is operated to shift gears, whereby the entrance door body is changed. The opening speed of 74B may be relatively slow in the initial opening operation and the final opening operation.

In the above embodiment, the entrance gate 7 is configured to include the pair of left and right entrance door bodies 74A and 74B, but it may be configured to be a single door rotatable about the vertical axis.

In the above embodiment, the electric motor 81 is used as the driving power source for swinging the entrance door body 74B, but various actuators such as a fluid pressure cylinder can be used.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but 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 an overall configuration according to an embodiment to which the present invention is applied.

FIG. 2 is a front view showing the overall configuration according to the embodiment of the present invention.

FIG. 3 is a right side view of the separation gate according to the embodiment of the present invention.

FIG. 4 is a right side view of the weighing unit according to the embodiment of the present invention.

FIG. 5 is a plan view near an entrance gate according to an embodiment of the present invention.

FIG. 6 is an enlarged view of a gate opening / closing mechanism according to an embodiment of the present invention.

FIG. 7 is a plan view showing the operation of the gate opening / closing mechanism according to the embodiment of the present invention.

FIG. 8 is a partially cutaway plan view near the exit gate according to the embodiment of the present invention.

FIG. 9 is a diagram for explaining a change with time when a cow according to an embodiment of the present invention walks on a weighing platform.

[Explanation of symbols]

 Reference Signs List 81 motor 83 swinging operation piece 83a engaging portion 84 protruding piece GO gate opening / closing means P guide path SG swinging type gate

Claims (2)

[Claims] 1. A taxiway (P) for guiding a plurality of walking animals.
A swing gate (SG) that blocks the forward field of view of the walking animal in a fully closed state is rotatably supported at the lateral width end of the taxiway (P) about a vertical axis. Further, the swing gate (SG) is provided in a state of being urged to return to the fully closed state, and the swing gate (SG) is switched between the fully closed state and an intermediate state between fully closed and fully opened, and in the intermediate state. Is a walking animal separating device provided with a gate opening / closing means (GO) for allowing the walking animal to push open for passage, wherein the gate opening / closing means (GO) is the swing gate (S).
G) The swinging gate (SG) is opened in a state where the opening speed of the swinging gate (SG) becomes relatively slow in the initial stage and the final stage of the opening process.
A walking animal separation device configured to switch from the fully closed state to the midway state. 2. The gate opening / closing means (GO) is formed so as to project from an end portion of the swing gate (SG) in the lateral width direction and swings integrally with the swing gate (SG). Swing for swinging the projecting piece (84) by including a piece (84) and an engaging portion (83a) that engages with the projecting piece (84), and the engaging action of the engaging portion (83a) swings the projecting piece (84). Operation piece (83) and motor (81) for rotationally driving the swing operation piece (83)
And a protruding piece of the engaging portion (83a) at an opening operation initial stage and an opening operation end stage in a process of opening the swing gate (SG) by rotationally driving the motor (81). The walking animal separation device according to claim 1, wherein the engagement position with respect to the (84) is relatively located on the swinging free end side of the projecting piece (84).