An adjustable neck restraint device for cattle based on a feed gate

Abstract

The application relates to a cattle neck fixing device based on a feeding fence, which comprises a feeding fence, a swing rod, a swing rod adjusting assembly and a swing rod stopping assembly. The feeding fence comprises a square frame and straight rods and arc rods which are arranged in the frame in a horizontal direction. The swing rod adjusting assembly is arranged on the arc rod. The swing rod is swingably arranged between the arc rod and the straight rod and is hinged with at least part of the swing rod adjusting assembly. The top end of the swing rod is provided with a limiting sleeve which is movably sleeved on the frame. The swing rod stopping assembly is arranged on the top of the frame. The position of the swing rod is adjusted in the horizontal direction by the swing rod adjusting assembly, so that the gap width between the swing rod and the straight rod can be adapted to the restriction of cattle necks with different widths. Under the premise that the position of the movable stop rod can be adjusted, the difficulty of stopping the swing rod is reduced, the swing rod stopping assembly can stop the swing rod in a vertical state or a state close to the vertical state, and the cattle necks are limited to enter or exit the feeding fence.

Description

Technical Field

[0001] This application belongs to the field of aquaculture technology, and specifically relates to an adjustable cattle neck fixing device based on a feeding pen. Background Technology

[0002] In dairy and beef cattle farming, feeding pens are typically used to separate the cattle's activity area from their feeding area to facilitate control or monitoring of their feeding. However, conventional feeding pens only open or close the feeding passage, making it inconvenient to secure the cattle's neck and unable to meet the needs of blood sampling, medication administration, or physical examinations during feeding. Therefore, existing technology has been improved to enable neck securing in certain conditions. For example, utility model publication CN204907473U discloses a cow neck clamp. The neck clamp includes two vertically arranged main rails and crossbars set at the upper and lower ends of the two main rails. A movable stop bar is hinged between the main rails through a support rod. A limit sleeve is set at the upper end of the movable stop bar. A limit structure is set above the upper crossbar between the main rails. When the movable stop bar is touched by a person or during the cow's feeding process and is made to be in a vertical state, the limit structure is rotated to form a limit engagement with the limit sleeve, so that the movable stop bar remains in a vertical state. In this state, the cow's neck, which is extending out of the main rails to feed, will be restricted between the movable stop bar and the main rails, so that the cow's head cannot exit between the main rails, thus achieving the purpose of restricting the movement of the cow's neck. However, this device has the problems of low success rate and low efficiency in restricting cattle necks. It requires manual operation and accurate control of the position of the movable stop bar. In addition, the main bars all adopt a fixed spacing structure, which is not adaptable to cattle necks. Forcibly fixing thicker cattle necks can easily cause injury to the cattle. Furthermore, the movable stop bar is more likely to be triggered and swing, increasing the difficulty of stopping it. For thinner cattle necks, it increases the margin of movement and reduces the restriction effect on the cattle neck. Summary of the Invention

[0003] Based on the aforementioned technical needs, this application provides an adjustable cattle neck restraint device based on a feeding pen, which can improve the success rate and efficiency of restraining cattle necks, reduce labor costs, and improve adaptability to different cattle necks.

[0004] To achieve the above objectives, the technical solution of this application is as follows: An adjustable cattle neck restraint device based on a feeding crate includes a feeding crate, a swing arm, a swing arm adjustment assembly, and a swing arm stop assembly. The feeding crate includes a square frame and straight rods and bow-shaped rods spaced horizontally within the frame. The swing arm adjustment assembly is disposed on the bow-shaped rod. The swing arm is swayably disposed between the bow-shaped rod and the straight rod and is at least partially hinged to the swing arm adjustment assembly. The swing arm adjustment assembly is used to drive the swing arm closer to or away from the straight rod. A limit sleeve is provided at the top of the swing arm, and the limit sleeve is movably sleeved on the frame. The swing arm stop assembly is disposed at the top of the frame to prevent the swing arm from swinging.

[0005] Preferably, the rocker arm adjustment assembly includes a hinge seat and an adjustment rod. The adjustment rod passes through the bow-shaped rod in a horizontal direction and is movably engaged with the bow-shaped rod. The hinge seat is disposed at one end of the adjustment rod, and the rocker arm is hinged to the hinge seat.

[0006] Preferably, the adjusting rod is threadedly engaged with the bow-shaped rod, one end of the adjusting rod is rotatably engaged with the hinge seat, and the other end is connected to a crank handle.

[0007] Preferably, the adjusting rod is slidably engaged with the bow-shaped rod, one end of the adjusting rod is fixedly connected to the hinge seat, a telescopic motor is provided on one side of the frame, and the adjusting rod is drivenly connected to the output shaft of the telescopic motor.

[0008] Preferably, the swing arm adjustment assembly further includes a neck width measuring mechanism, a swing arm displacement measuring mechanism, and a start switch. The neck width measuring mechanism includes measuring gratings symmetrically arranged on both sides of the frame along the height direction. The swing arm displacement measuring mechanism includes an optical transmitter disposed on one side of the hinge seat and an optical receiver disposed on one side of the straight rod. The measuring gratings and the optical receiver are both electrically connected to the telescopic motor through the start switch.

[0009] Preferably, the feeding pen further includes side rails, a pair of side rails symmetrically arranged on both sides of the frame and the straight rod and the bow rod located between the pair of side rails; the measuring grating is fixed between the pair of side rails.

[0010] Preferably, the top end of the limiting sleeve is provided with a locking rod, and the swing arm stop assembly includes a limiting seat, a clamp-shaped stop block and a lifting drive mechanism disposed at the top end of the frame. The limiting seat is provided with a sliding groove through it in the vertical direction. The clamp-shaped stop block is located in the sliding groove and is slidably connected to the sliding groove in the vertical direction. The lifting drive mechanism is drivenly connected to the clamp-shaped stop block. The lifting drive mechanism is used to move the clamp-shaped stop block downward and clamp the locking rod.

[0011] Preferably, the lifting drive mechanism includes a push rod, a return spring, a suction block, and an electromagnet. One end of the push rod is connected to the top of the clamp-shaped stop block, and the other end is connected to the suction block. The return spring is sleeved on the push rod, and its two ends are in contact with the top of the suction block and the top of the limiting seat, respectively. The electromagnet is located on the moving path of the suction block and fixed to one side of the limiting seat. The return spring is used to move the suction block away from the electromagnet, and the electromagnet is used to attract the suction block.

[0012] Preferably, the lifting drive mechanism further includes a proximity switch and a sensing element. The proximity switch is located on one side of the limiting seat and electrically connected to the electromagnet, with its swing trajectory adjacent to the limiting sleeve. The sensing element is located on one side of the limiting sleeve and can trigger the proximity switch within the sensing distance range of the proximity switch.

[0013] By adopting the above technical solution, compared with the prior art, this application has at least the following beneficial effects: During the process of restricting the neck of cattle, the position of the swing arm is adjusted horizontally by the swing arm adjustment assembly so that the gap between the swing arm and the straight arm can be adapted to restrict necks of different widths. This avoids the problem in the prior art where the gap between the movable stop (equivalent to the swing arm of this application) and the main rail (equivalent to the straight arm of this application) cannot be adjusted, which can easily cause damage to thicker necks or have a poor restriction effect on thinner necks. Furthermore, with the position of the movable stop being adjustable, the problem of the movable stop being easily triggered to swing and difficult to maintain an upright state due to the gap between the movable stop and the bow-shaped rod being unsuitable for the neck can be avoided. This reduces the difficulty of stopping the swing arm and allows the swing arm stopping assembly to accurately lock the swing arm when it is in or close to a vertical state. Attached Figure Description

[0014] Figure 1 This is an isometric schematic diagram of the neck fixing device in Example 1.

[0015] Figure 2 This is a side view of the neck fixing device in Example 1.

[0016] Figure 3 This is a partial cross-sectional view AA of the cattle neck fixing device in Example 1.

[0017] Figure 4 This is a partially enlarged schematic diagram of the cattle neck fixing device in Example 1 (from the attached document). Figure 3 ).

[0018] Figure 5 This is a partially enlarged schematic diagram of the cattle neck fixing device in Example 1 (from the attached document). Figure 2 ).

[0019] Figure 6 This is a front view of the neck fixing device in Example 2.

[0020] Figure 7 This is a partial sectional view BB (including a partial enlarged view) of the bovine neck fixation device in Example 2.

[0021] In the diagram: 10 feeding pen, 11 frame, 12 straight rod, 13 bow rod, 14 side guardrail, 20 swing arm, 21 limit sleeve, 211 locking rod, 22 counterweight, 30 swing arm adjustment assembly, 31 hinge seat, 32 adjusting rod, 33 crank handle, 34 telescopic motor, 35 measuring grating, 36 optical transmitter, 37 optical receiver, 40 swing arm stop assembly, 41 limit seat, 411 slide groove, 42 clamp-shaped stop block, 43 push rod, 44 return spring, 45 suction block, 46 electromagnet, 47 proximity switch, 48 sensed component. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The technical solutions of this application will be further described below with reference to the accompanying drawings of the embodiments, and this application is not limited to the following specific implementation methods.

[0023] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "inner," "outer," "left," "right," "front," "rear," "top," and "bottom" indicate directions or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limitations on this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0024] The following is in conjunction with the appendix Figure 1 To be continued Figure 7 The present application will be further described in detail with reference to specific embodiments.

[0025] This application provides an adjustable cattle neck restraint device (hereinafter referred to as cattle neck restraint device) based on a feeding pen 10, including a feeding pen 10, a swing rod 20, a swing rod adjustment assembly 30, and a swing rod stop assembly 40. The feeding pen 10 includes a square frame 11 and straight rods 12 and bow-shaped rods 13 spaced horizontally from left to right within the frame 11. Both ends of the straight rods 12 and bow-shaped rods 13 are connected to the upper and lower horizontal bars of the frame 11. A convergent-to-diffusing gap is formed between the straight rods 12 and bow-shaped rods 13 from top to bottom. Several feeding pens 10 connected side-by-side can separate the cattle's activity area from the feeding area. Cattle in the activity area can restrain their heads through the gap between the straight rods 12 and bow-shaped rods 13. The arm 20 enters the feeding area through a gap to feed; the swing arm adjustment assembly 30 is disposed on the bow-shaped rod 13, and the swing arm 20 is swayably disposed in the gap between the bow-shaped rod 13 and the straight rod 12 and is at least partially hinged to the swing arm adjustment assembly 30, so that the swing arm 20 can swing around the hinged part between the bow-shaped rod 13 and the straight rod 12, while the swing arm adjustment assembly 30 can also drive the swing arm 20 to approach or move away from the straight rod 12 in the horizontal direction; a limit sleeve 21 is provided at the top of the swing arm 20, and a through hole or groove is provided through the limit sleeve 21 from left to right, through which the upper cross bar of the frame 11 passes, so that the limit sleeve 21 can be movably sleeved on the frame 11; the swing arm stop assembly 40 is disposed at the top of the frame 11 to prevent the swing arm 20 from swinging.

[0026] Specifically, see Appendix Figure 6 and attached Figure 3 The lower end of the swing arm 20 is also provided with a counterweight 22. This counterweight 22 is used to keep the swing arm 20 in a tilted state in its natural state (when there is no cow contact or it is not locked by the swing arm stop assembly 40), with the lower end close to the straight rod 12 and the upper end close to the bow rod 13. Preferably, the counterweight 22 can be a curved counterweight rib. The counterweight rib not only satisfies the effect of restoring the swing arm 20 to the above-mentioned tilted state under the influence of gravity in its natural state, but also increases the blocking area of ​​the gap between the lower end of the swing arm 20 and the bow rod 13, preventing the cow's head from directly passing through the gap between the lower end of the swing arm 20 and the bow rod 13, forcing the cow that needs to eat to adapt to the gap between the upper end of the swing arm 20 and the straight rod 12. As the cow's neck moves downwards through the gap, the swing rod 20 is propelled by the cow's neck, causing its upper end to approach the straight rod 12 and its lower end to approach the bow-shaped rod 13. This allows the swing rod stop assembly 40 to prevent the swing rod 20 from swinging when it is just about to reach a vertical position, thus restricting the movement of the cow's neck. This allows for blood collection, medication administration, and other measures to be performed on the cow during the period when its head cannot exit the gap. In addition, when it is necessary to prevent the cow from overfeeding or to stop the cow from eating, the operator can move the swing rod 20 and lock it through the swing rod stop assembly 40 to prevent the cow's head from passing through the gap to eat.

[0027] Using the above-mentioned cattle neck fixing device has the following beneficial effects: During the process of restricting the neck of cattle, the position of the swing arm 20 is adjusted horizontally by the swing arm adjustment component 30 so that the gap width between the swing arm 20 and the straight rod 12 can be adapted to restrict necks of different widths. This avoids the problem in the prior art where the gap between the movable stop (equivalent to the swing arm 20 of this application) and the main rail (equivalent to the straight rod 12 of this application) cannot be adjusted, which can easily cause damage to thicker necks or have a poor restriction effect on thinner necks. Moreover, with the position of the movable stop adjustable, the problem of the movable stop being easily triggered to swing and difficult to maintain an upright state due to the gap between the movable stop and the bow rod 13 being unsuitable for the neck can be avoided. This reduces the difficulty of stopping the swing arm 20 and allows the swing arm stopping component 40 to accurately lock the swing arm 20 when it is in or close to a vertical state.

[0028] Based on the above embodiments, this application further provides more detailed technical solutions to fully disclose each embodiment.

[0029] To adjust the position of the rocker arm 20, the rocker arm adjustment assembly 30 includes a hinge seat 31 and an adjustment rod 32. The adjustment rod 32 passes through the bow-shaped rod 13 in the horizontal direction and is movably engaged with the bow-shaped rod 13. The hinge seat 31 is located at one end of the adjustment rod 32, and the rocker arm 20 is hinged to the hinge seat 31.

[0030] Specifically, this application will describe Embodiment 1 and Embodiment 2 respectively, based on the different movable engagement methods of the bow-shaped rod 13 and the adjusting rod 32.

[0031] In Example 2, see Appendix Figure 6 and attached Figure 7 The adjusting rod 32 is a lead screw, and a threaded hole is provided horizontally through the bow-shaped rod 13 for cooperating with the movement of the lead screw. The adjusting rod 32 passes through the threaded hole and is threadedly engaged with the threaded hole. A rotating seat is provided on the side of the hinge seat opposite to the rocker arm 20. A rotatable turntable is provided on the rotating seat. One end of the adjusting rod 32 is fixedly connected to the axis of the turntable along the axial direction, and the other end is provided with a rotary drive component. Preferably, the rotary drive component can be a manually driven crank 33 or an electrically driven drive motor (omitted in the figure). In one embodiment, the operator can hold the crank 33 and rotate the adjusting rod 32, so that the adjusting rod 32, in conjunction with the threaded hole, drives the hinge seat 31 to move forward (clockwise rotation of the crank 33) or backward (counterclockwise rotation of the crank 33) along the axial direction of the adjusting rod 32, so as to achieve the purpose of adjusting the position of the rocker arm 20.

[0032] In Example 1, see Appendix Figure 1 To be continued Figure 5The adjusting rod 32 is a smooth rod. A through hole is provided horizontally through the bow-shaped rod 13 for the smooth rod to move. The adjusting rod 32 passes through the through hole and its side is slidably engaged with the inner wall of the through hole. One end of the adjusting rod 32 is fixedly connected to the hinge seat 31. A telescopic motor 34 is provided on the right longitudinal rod side of the frame 11 adjacent to the bow-shaped rod 13. The telescopic length of the output shaft of the telescopic motor 34 can be adjusted according to the needs. The end of the adjusting rod 32 away from the hinge seat 31 is connected to the output shaft of the telescopic motor 34. When the telescopic motor 34 is energized, it can drive the adjusting rod 32 to move horizontally based on the width of the cow's neck, so that the gap width between the swing rod 20 and the straight rod 12 can be suitable for restricting the cow's neck.

[0033] Furthermore, to improve the accuracy of adjusting the gap between the swing arm 20 and the straight rod 12, the aforementioned swing arm 20 adjustment mechanism also includes a neck width measuring mechanism, a swing arm 20 displacement measuring mechanism, and a start switch (in this application, the start switch is a circuit control element; since the switch of the control circuit can be integrated on the telescopic motor 34, it is omitted from the attached drawings). The neck width measuring mechanism is used to measure the neck width of cattle approaching the feeding pen 10, and the swing arm 20 displacement measuring mechanism is used to monitor the displacement of the swing arm 20 so that the swing arm 20 can be moved to a position suitable for restricting the neck of cattle. Specifically, to facilitate the rapid and accurate acquisition of the neck width, the aforementioned neck width measuring mechanism includes measuring gratings 35 symmetrically arranged on the upper and lower sides of the frame 11 along the height direction (the measuring gratings 35 include reflective gratings and transmissive gratings; this application adopts a transmissive grating that needs to be symmetrically arranged, that is, one of a pair of measuring gratings 35 is the transmitting end and the other is the receiving end. The symmetrical arrangement of the two can reduce correction errors and improve measurement accuracy and efficiency compared to the reflective grating that can be arranged on one side). The symmetrically arranged measuring gratings 35 can measure the neck width of the cattle entering the beam coverage area based on the parallel beam emitted relatively along the height direction.In one specific embodiment, it is known that the neck length of a cow typically accounts for 27% to 30% of its body length. If the body length of the cows in the activity area of ​​a cattle farm where the neck fixing device of this application is applied is 1.9 to 2.1 m, then the neck length is approximately 0.51 to 0.63 m. Taking the median of 0.57 m as the distance from the middle of the neck to the head, and given that the width of the neck gradually increases from the junction of the head and neck to the junction of the neck and torso, to reduce damage to the neck when restricting it and to prevent the cow from needing to move forward or backward due to stress to obtain a relatively comfortable gap width when clamping the neck, a measuring grating 35 is set at approximately half the neck length. Width measurement is performed, meaning the measuring grating 35 is positioned approximately 0.57m from the frame 11 to ensure that after the bull's head passes through the gap between the swing arm 20 and the straight rod 12, the measuring grating 35 can output at least the width value of the middle of the bull's neck. Of course, the position of the measuring grating 35 is not limited to the example provided in this application; it can be positioned further or closer to the frame 11 according to actual needs or more specific statistics. The swing arm 20 measuring mechanism includes an optical transmitter 36 located on one side of the hinge seat 31 and an optical receiver 37 located on one side of the straight rod 12. The optical transmitter 36 and the optical receiver 37 form a ranging sensor. A TOF laser rangefinder sensor, model ZW-TOF3000N, can output the distance between its optical transmitter 36 and optical receiver 37 in real time when a standard distance is set between them. Upon reaching the standard distance, it outputs a signal that disconnects the control circuit via a start switch. With the measuring grating 35 and optical receiver 37 electrically connected to the telescopic motor 34 via a start switch, forming a loop that controls the extension and retraction of the motor 34, the telescopic motor 34 can use the neck width value output by the measuring grating 35 as the pivot point 20 in the locked state, in relation to the straight rod 1. The distance adjustment of the output shaft extension length of the telescopic motor 34 allows the telescopic motor 34 to drive the swing arm 20 to move to the position where the distance between the swing arm 20 and the straight rod 12 reaches the cow neck width value before the cow head passes through the frame 11. At the same time, the optical transmitter 36 and the optical receiver 37 also use the cow neck width value as the standard value to judge the size of the actual distance value between the two in real time. When the optical transmitter 36 and the optical receiver 37 detect that the actual distance value between the two is equal to the cow neck width value, it means that the telescopic motor 34 has driven the swing arm 20 to the position suitable for the cow neck limit. At this time, a signal is sent to the start switch to control the telescopic motor 34 to stop telescopic.

[0034] With the efficient cooperation of the aforementioned neck width measuring mechanism and the displacement measuring mechanism of the swing arm 20, the telescopic motor 34 can complete the adjustment of the position of the swing arm 20 in a short time before the bull's head passes through the frame 11.

[0035] Furthermore, to improve the ranging accuracy of the aforementioned measuring grating 35, the feeding pen 10 also includes a pair of side rails 14. The pair of side rails 14 are symmetrically arranged on the left and right sides of the frame 11, with the straight rod 12 and the bow-shaped rod 13 positioned between them. The pair of measuring gratings 35 are relatively fixed between the pair of side rails 14, with one located at the top of the side rail 14 and the other at the bottom. Specifically, the distance between the pair of side rails 14 is only large enough for one cow to pass through. The side rails 14 prevent crowding and competition among cows in adjacent feeding pens 10, ensuring that only the neck of a single cow reaches the measuring area of ​​the measuring grating 35, thus avoiding errors in the measurement of the cow's neck width caused by other cows touching or entering the measuring area of ​​the measuring grating 35.

[0036] Based on the above two embodiments, the limiting sleeve 21 of this application is provided with a locking rod 211 at its top end. The swing rod stop assembly 40 includes a limiting seat 41, a clamp-shaped stop block 42 and a lifting drive mechanism, which are provided at the top end of the frame 11. The limiting seat 41 is provided at intervals at the top end of the upper crossbar of the frame 11 by support columns. The limiting seat 41 is provided with a vertical groove 411 at the position where the swing rod 20 swings to a vertical or near-vertical state. The bottom end of the clamp-shaped stop block 42 is provided with clamp-shaped claws. The gap between the clamp-shaped claws is larger than the diameter of the locking rod 211. The top of the moving block 42 is connected to the lifting drive mechanism. The clamp-shaped stop block 42 is located in the slide groove 411 and its side slide groove 411 can slide in the vertical direction. The lifting drive mechanism is used to drive the clamp-shaped stop block 42 to move downward. When the limit seat 41 swings to the vertical state or close to the vertical state, the lifting drive mechanism quickly drives the clamp-shaped stop block 42 to move downward, so that the clamp-shaped claw at the bottom of the clamp-shaped stop block 42 just clamps the locking rod 211, so that the swing rod 20 is kept in the vertical state or close to the vertical state and cannot continue to swing, thereby achieving the purpose of restricting the neck of the cow from entering and exiting the frame 11.

[0037] Preferably, to improve the clamping efficiency of the lifting drive mechanism on the clamp-shaped stop block 42, the lifting drive mechanism includes a push rod 43, a return spring 44, a suction block 45, and an electromagnet 46. The push rod 43 is fixedly connected vertically to the top of the clamp-shaped stop block 42. The suction block 45 is a magnetically conductive metal in the shape of an inverted L or T, with one side surface of the suction block 45 covering the top of the push rod 43. The return spring 44 is sleeved on the outside of the push rod 43, and its two ends, in their natural length state, contact the suction block 45 and the limiting seat 41, respectively. The electromagnet 46 attracts… The flat side is positioned above the suction block 45 and below it on one side of the limiting seat 41. When the return spring 44 is not under pressure, it tends to return to its natural length, pushing the suction block 45 away from the electromagnet 46, so that the clamp-shaped stop block 42 is positioned above the frame 11 and does not contact the locking rod 211. When the electromagnet 46 is energized and has the function of attracting metal, the electromagnet 46 can attract the suction block 45 and move it downward against the elastic force of the return spring 44, so that the suction block 45 pushes the clamp-shaped stop block 42 downward through the push rod 43 and clamps the locking rod 211.

[0038] Furthermore, to improve the triggering sensitivity and accuracy of the above-mentioned lifting drive mechanism, the lifting drive mechanism also includes a proximity switch 47 and a sensing element 48. The proximity switch 47 is located on one side of the limit seat 41 adjacent to the swing trajectory of the limit sleeve 21 and is electrically connected to the electromagnet 46 to form a control circuit that energizes or de-energizes the electromagnet 46. The sensing element 48 is located on one side of the limit sleeve 21. The sensing element 48 can trigger the proximity switch 47 to energize the electromagnet 46 within the sensing distance range of the proximity switch 47 during the swing of the swing arm 20, thereby achieving the purpose of driving the clamp-shaped stop block 42 to brake the swing arm 20. Specifically, this application preferably uses a square inductive proximity switch 47 with the product model name "Loshda Q25". This switch can detect the approach stroke of a metal that can be sensed within its sensing range. The sensed part 48 is made of a metal that can be sensed by this type of proximity switch 47 and is made into a block or strip shape and set on one side of the limiting sleeve 21. Through a limited number of installations and adjustments, the proximity switch 47 outputs a normally open signal when it does not detect the sensed part 48, so that the electromagnet 46 is not energized. When the sensed part 48 swings with the swing arm 20, it enters the sensing range of the proximity switch 47 when the swing arm 20 reaches a position that is vertical or close to vertical and triggers the proximity switch 47 to output a closed signal. This energizes the electromagnet 46 within a few milliseconds and attracts the suction block 45, causing the clamp-shaped stop block 42 to fall and lock the swing arm 20, thereby achieving the purpose of accurately locking the swing arm 20 and limiting the neck.

[0039] Obviously, the above embodiments of this application are merely examples for clearly illustrating this application, and are not intended to limit the implementation of this application. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An adjustable neck restraint device for cattle based on a feeding pen, characterized in that, The device includes a feeding crate, a swing arm, a swing arm adjustment assembly, and a swing arm stop assembly. The feeding crate includes a square frame and straight rods and bow-shaped rods spaced horizontally within the frame. The swing arm adjustment assembly is mounted on the bow-shaped rod. The swing arm is swayably positioned between the bow-shaped rod and the straight rod and is at least partially hinged to the swing arm adjustment assembly. The swing arm adjustment assembly is used to drive the swing arm closer to or away from the straight rod. A limit sleeve is provided at the top of the swing arm, and the limit sleeve is movably fitted onto the frame. The swing arm stop assembly is located at the top of the frame and is used to prevent the swing arm from swinging.

2. The adjustable cattle neck fixing device based on a feeding pen as described in claim 1, characterized in that, The swing arm adjustment assembly includes a hinge seat and an adjustment rod. The adjustment rod passes through the bow-shaped rod in a horizontal direction and is movably engaged with the bow-shaped rod. The hinge seat is disposed at one end of the adjustment rod, and the swing arm is hinged to the hinge seat.

3. The adjustable cattle neck fixing device based on a feeding pen as described in claim 2, characterized in that, The adjusting rod is threadedly engaged with the bow-shaped rod, one end of the adjusting rod is rotatably engaged with the hinge seat, and the other end is connected to a crank handle.

4. The adjustable cattle neck fixing device based on a feeding pen as described in claim 2, characterized in that, The adjusting rod is slidably engaged with the bow-shaped rod, one end of the adjusting rod is fixedly connected to the hinge seat, and a telescopic motor is provided on one side of the frame. The adjusting rod is drivenly connected to the output shaft of the telescopic motor.

5. The adjustable cattle neck fixing device based on a feeding pen as described in claim 4, characterized in that, The swing arm adjustment assembly also includes a neck width measuring mechanism, a swing arm displacement measuring mechanism, and a start switch. The neck width measuring mechanism includes measuring gratings symmetrically arranged on both sides of the frame along the height direction. The swing arm displacement measuring mechanism includes an optical transmitter located on one side of the hinge seat and an optical receiver located on one side of the straight rod. The measuring gratings and the optical receiver are both electrically connected to the telescopic motor through the start switch.

6. The adjustable cattle neck fixing device based on a feeding pen as described in claim 5, characterized in that, The feeding pen also includes side rails, a pair of which are symmetrically arranged on both sides of the frame and the straight rod and the bow rod are located between the pair of side rails; the measuring grating is fixed between the pair of side rails.

7. The adjustable cattle neck fixing device based on a feeding pen as described in claim 1, characterized in that, The top of the limiting sleeve is provided with a locking rod. The swing arm stop assembly includes a limiting seat, a clamp-shaped stop block and a lifting drive mechanism disposed at the top of the frame. The limiting seat is provided with a sliding groove in the vertical direction. The clamp-shaped stop block is located in the sliding groove and is slidably connected to the sliding groove in the vertical direction. The lifting drive mechanism is drivenly connected to the clamp-shaped stop block. The lifting drive mechanism is used to move the clamp-shaped stop block downward and clamp the locking rod.

8. The adjustable cattle neck fixing device based on a feeding pen as described in claim 7, characterized in that, The lifting drive mechanism includes a push rod, a return spring, a suction block, and an electromagnet. One end of the push rod is connected to the top of the clamp-shaped stop block, and the other end is connected to the suction block. The return spring is sleeved on the push rod, and its two ends are in contact with the top of the suction block and the top of the limiting seat, respectively. The electromagnet is located on the moving path of the suction block and is fixed to one side of the limiting seat. The return spring is used to move the suction block away from the electromagnet, and the electromagnet is used to attract the suction block.

9. The adjustable cattle neck fixing device based on a feeding pen as described in claim 8, characterized in that, The lifting drive mechanism also includes a proximity switch and a sensing element. The swing trajectory of the proximity switch adjacent to the limiting sleeve is set on one side of the limiting seat and electrically connected to the electromagnet. The sensing element is set on one side of the limiting sleeve. The sensing element can trigger the proximity switch within the sensing distance range of the proximity switch.

Images