Free in-out type limiting fence
By designing a free-entry and exit-type gestation pen, and utilizing a linkage mechanism and front door lock to enable pigs to freely enter and exit, the biological violations and operational inconveniences of existing gestation pens are solved, thereby improving the space utilization and operational convenience of pig houses.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-04-07
AI Technical Summary
The current use of gestation crates violates the biological characteristics of pigs, leading to abnormal behavior and health problems. At the same time, they are inconvenient to operate and increase the design and construction costs of pig houses.
Design a free-entry and exit-type limiting pen. A linkage mechanism is used to make the rear gate and the front gate hinged through a linkage rod to achieve synchronous rotation. Pigs can freely enter and exit, making full use of the space. Synchronous control is achieved through the front gate lock.
It solved the problem of abnormal pig behavior, improved operational convenience, reduced pigsty design and construction costs, and increased pigsty space utilization.
Smart Images
Figure CN224084361U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of livestock breeding equipment, and more specifically, relates to a free-entry and exiting restraint fence. Background Technology
[0002] With the vigorous development of my country's pig farming industry, the degree of intensification and scale is getting larger and larger. In order to reduce the land occupied by pig farming, most pig farms adopt the method of gestation crate feeding.
[0003] The existing gestation crates violate the biological characteristics of pigs. Because sows live in fixed, small spaces for a long time, they lack exercise and are hindered from exhibiting basic behaviors such as turning, walking, foraging, scratching, rooting, biting, and social interaction. Pigs in gestation crates are prone to abnormal behaviors such as chewing without food, biting the fence, and excessive drinking, which can even cause physical damage and reproductive diseases, leading to prolonged farrowing time, dystocia, indigestion, and decreased reproductive performance in sows.
[0004] The drawbacks of existing gestation stalls include: the front and rear gates of the stalls are designed independently and need to be controlled separately, which is inconvenient for staff to operate; most of the gates are opened and closed by rotating left and right, which requires the width of the rear aisle to ensure that the rear gate has enough space to rotate left and right. The increase in aisle width will inevitably require an increase in the width of the pigsty, which will place higher demands on the design and construction of the pigsty and increase the investment accordingly. Summary of the Invention
[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a free-entry and exiting limiting barrier. The technical solution adopted in this application is:
[0006] A free-entry and exiting limiting barrier is provided, which includes a barrier body, a rear barrier gate, a front barrier gate, and a linkage mechanism. The linkage mechanism is provided with a linkage rod, which is located between the rear barrier gate and the front barrier gate. Both the rear barrier gate and the front barrier gate are hinged to the linkage rod. The rear barrier gate is rotatably located at the rear end of the barrier body, and the front barrier gate is rotatably located at the front end of the barrier body.
[0007] Preferably, the railing also includes a side rail and a rear rotating mechanism. The rear rotating mechanism is provided with a rear rotating shaft and a rear rotating rod. The front end of the rear rotating rod is rotatably mounted on the rear rotating shaft. The rear rotating shaft is fixedly mounted on the inner side of the side rail, and the rear gate is fixedly mounted on the rear end of the rear rotating rod.
[0008] Preferably, a rear hinge shaft is provided between the rear rotating rod and the linkage rod, and the rear hinge shaft is located in the middle section of the rear rotating rod.
[0009] Preferably, the rear end of the linkage rod is provided with an arc-shaped part, which is a smooth arc and gradually curves downward from front to back.
[0010] Preferably, a front rotating mechanism is provided between the front gate and the fence body. The front rotating mechanism includes a front rotating shaft and a front rotating sleeve. The front rotating sleeve is rotatably fitted onto the front rotating shaft, and the front rotating shaft is fixedly installed on the fence body. The front gate and the front rotating sleeve are linked together.
[0011] Preferably, a front hinge shaft and a front rotating rod are provided between the front gate and the linkage rod. The front hinge shaft is located above the front rotating sleeve, and the front rotating rod is located between the front hinge shaft and the front rotating sleeve.
[0012] Preferably, a reinforcing rib is provided between the front gate and the front rotating rod, and the reinforcing rib is inclined between the front gate and the front rotating rod.
[0013] Preferably, the limiting barrier also includes a front door lock, which includes a front lock hook and a front lock bar; the front lock hook is rotatably mounted on the barrier body, and the front lock bar is fixedly mounted on the front barrier door.
[0014] Preferably, the front door lock further includes a front swing shaft and a front swing shaft sleeve. The front swing shaft is rotatably disposed inside the front swing shaft sleeve, and the front swing shaft sleeve is fixedly disposed at the front end of the gate body. The front lock hook is linked with the front swing shaft. The front gate is arched, and the bottom end of the front gate is provided with a bend. The front lock rod is disposed on the bend.
[0015] Preferably, the front door lock also includes a handle, which is linked to the front swing shaft.
[0016] The advantages of this utility model are as follows:
[0017] After the rear gate opens, the front gate remains inside the pen. Pigs enter through the rear gate and push the front gate forward, causing it to rotate upwards and forwards. Both the rear and front gates are hinged to a linkage rod, which rotates the rear gate downwards and forwards until it closes, preventing other pigs from re-entering the pen. Pigs then back out of the pen, pushing the rear gate backwards and upwards, opening it. Simultaneously, this rotates the front gate downwards and backwards, allowing the pig to exit smoothly. The front gate then returns to its original position. The linkage rod, positioned between the rear and front gates, ensures synchronized rotation and controls the distance between them, guaranteeing the length between the gates is suitable for the pig's size and maximizing space utilization within the pen. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0019] Figure 1A schematic diagram showing the rear gate of a free-access barrier opening.
[0020] Figure 2 A top view showing the rear gate of a free-access barrier open.
[0021] Figure 3 This is a schematic diagram of the rear gate of a free-entry / exit barrier being closed.
[0022] Explanation of symbols in the diagram:
[0023] 1 is the fence body, 11 is the rear gate, 12 is the front gate, 121 is the bending part, 13 is the linkage mechanism, 131 is the linkage rod, 132 is the arc-shaped part, 14 is the side fence, 15 is the rear rotation mechanism, 151 is the rear rotation shaft, 152 is the rear rotation rod, 16 is the front rotation mechanism, 161 is the front rotation shaft, 162 is the front rotation sleeve, 17 is the front hinge shaft, 18 is the front rotation rod, 181 is the reinforcing rib, and 19 is the rear hinge shaft.
[0024] 2 is the front door lock, 21 is the front lock hook, 22 is the front lock lever, 23 is the front swing shaft, 24 is the front swing shaft sleeve, and 25 is the handle. Detailed Implementation
[0025] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0026] The free-entry / exit limit bar provided in the embodiments of this application will now be described.
[0027] like Figures 1 to 3 As shown, a free-entry and exit type barrier includes a barrier body 1, which includes a rear gate 11, a front gate 12, and a linkage mechanism 13. The linkage mechanism 13 is provided with a linkage rod 131, which is located between the rear gate 11 and the front gate 12. Both the rear gate 11 and the front gate 12 are hinged to the linkage rod 131. The rear gate 11 is rotatably located at the rear end of the barrier body 1, and the front gate 12 is rotatably located at the front end of the barrier body 1.
[0028] After the rear gate 11 is opened, the front gate 12 is inside the pen 1. Pigs enter the pen 1 through the rear gate 11 and push the front gate 12 forward, causing it to rotate forward and upward. Both the rear gate 11 and the front gate 12 are hinged to the linkage rod 131, which drives the rear gate 11 to rotate forward and downward until it closes, preventing other pigs from entering the pen 1 again. Pigs then back out of the pen 1 and push the rear gate 11 backward, causing it to rotate backward and upward. When the pen 1 is opened, the front gate 12 rotates backward and downward, allowing the pig to smoothly exit the pen 1. At the same time, the front gate 12 returns to the pen 1, completing the reset. The linkage rod 131 is located between the rear gate 11 and the front gate 12, which can ensure that the rear gate 11 and the front gate 12 rotate synchronously and control the distance between the rear gate 11 and the front gate 12, ensuring that the length between the rear gate 11 and the front gate 12 can meet the size of the pig, thereby making full use of the space in the pen 1.
[0029] The railing 1 also includes a side railing 14 and a rear rotation mechanism 15. The rear rotation mechanism 15 is provided with a rear rotation shaft 151 and a rear rotation rod 152. The front end of the rear rotation rod 152 is rotatably mounted on the rear rotation shaft 151. The rear rotation shaft 151 is fixedly mounted on the inner side of the side railing 14. The rear gate 11 is fixedly mounted on the rear end of the rear rotation rod 152. The rear gate 11 rotates backward and upward, and the rear gate 11 opens at a larger angle, resulting in a better effect.
[0030] In this embodiment, there are two rear rotating shafts 151 and two rear rotating rods 152, which are symmetrically arranged on the inner side of the side rail 14.
[0031] A rear hinge shaft 19 is provided between the rear rotating rod 152 and the linkage rod 131. The rear hinge shaft 19 is located in the middle section of the rear rotating rod 152. When the rear gate 11 rotates, it drives the rear rotating rod 152 to rotate forward and backward with the rear rotating shaft 151 as the axis. The distance between the rear rotating rod 152 and the rear hinge shaft 19 is appropriate, which can drive the linkage rod 131 to rotate smoothly and provide more power to the linkage rod 131.
[0032] The rear end of the linkage 131 is provided with an arc-shaped part 132. The arc-shaped part 132 is in a smooth arc shape and gradually bends downward from front to back, further ensuring smoother transmission between the rear gate 11 and the front gate 12.
[0033] A front rotating mechanism 16 is provided between the front gate 12 and the railing body 1. The front rotating mechanism 16 is provided with a front rotating shaft 161 and a front rotating sleeve 162. The front rotating sleeve 162 is rotatably sleeved on the front rotating shaft 161. The front rotating shaft 161 is fixedly installed on the railing body 1. The front gate 12 is linked with the front rotating sleeve 162.
[0034] In this embodiment, the rear rotating shaft 151 and the front rotating shaft 161 are both arranged laterally and are parallel to each other, ensuring that the front gate 12 and the rear gate 11 can rotate smoothly upward and downward.
[0035] A front hinge shaft 17 and a front rotating rod 18 are provided between the front gate 12 and the linkage rod 131. The front hinge shaft 17 is located above the front rotating sleeve 162, and the front rotating rod 18 is located between the front hinge shaft 17 and the front rotating sleeve 162.
[0036] A reinforcing rib 181 is provided between the front gate 12 and the front rotating rod 18. The reinforcing rib 181 is inclined between the front gate 12 and the front rotating rod 18 to increase the strength of the connection between the front gate 12 and the front rotating rod 18.
[0037] like Figure 3 As shown, the limit bar also includes a front door lock 2, which includes a front lock hook 21 and a front lock rod 22; the front lock hook 21 is rotatably mounted on the bar body 1, and the front lock rod 22 is fixedly mounted on the front gate 12.
[0038] The front door lock 2 also includes a front swing shaft 23 and a front swing shaft sleeve 24. The front swing shaft 23 is rotatably disposed inside the front swing shaft sleeve 24. The front swing shaft sleeve 24 is fixedly disposed at the front end of the barrier body 1. The front lock hook 21 is linked with the front swing shaft 23. When the front swing shaft 23 rotates, it drives the front lock hook 21 to swing forward and backward. The front barrier door 12 is arched. The bottom end of the front barrier door 12 is provided with a bent part 121. The front lock rod 22 is disposed on the bent part 121. The front barrier door 12 rotates forward and upward until the front lock rod 22 is hooked on the front lock hook 21, and the front door lock 2 is locked. Neither the rear barrier door 11 nor the front barrier door 12 can rotate.
[0039] Among them, the front gate 12 does not occupy the space inside the fence 1, further making full use of the space inside the fence 1.
[0040] The front door lock 2 also includes a handle 25, which is linked to the front swing shaft 23. The handle 25 can drive the front swing shaft 23 to rotate, causing the front lock hook 21 to swing forward, causing the front lock rod 22 to disengage from the front lock hook 21, thus unlocking the front door lock 2 and allowing the rear door 11 and the front door 12 to rotate.
[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. 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. A free-entry / exit type limiting barrier, comprising a barrier body, characterized in that: The enclosure includes a rear gate, a front gate, and a linkage mechanism. The linkage mechanism is provided with a linkage rod, which is located between the rear gate and the front gate. Both the rear gate and the front gate are hinged to the linkage rod. The rear gate is rotatably located at the rear end of the enclosure, and the front gate is rotatably located at the front end of the enclosure.
2. The free-entry / exit limiting bar according to claim 1, characterized in that: The enclosure also includes a side rail and a rear rotating mechanism. The rear rotating mechanism has a rear rotating shaft and a rear rotating rod. The front end of the rear rotating rod is rotatably mounted on the rear rotating shaft. The rear rotating shaft is fixedly mounted on the inner side of the side rail, and the rear gate is fixedly mounted on the rear end of the rear rotating rod.
3. The free-entry / exit limiting bar according to claim 2, characterized in that: A rear hinge shaft is provided between the rear rotating rod and the linkage rod, and the rear hinge shaft is located in the middle section of the rear rotating rod.
4. The free-entry / exit limiting bar according to claim 3, characterized in that: The rear end of the linkage rod is provided with an arc-shaped part, which is a smooth arc shape and gradually curves downward from front to back.
5. The free-entry / exit limiting bar according to any one of claims 1 to 4, characterized in that: A front rotating mechanism is provided between the front gate and the railing body. The front rotating mechanism has a front rotating shaft and a front rotating sleeve. The front rotating sleeve is rotatably fitted on the front rotating shaft. The front rotating shaft is fixed on the railing body. The front gate and the front rotating sleeve are linked.
6. The free-entry / exit limiting bar according to claim 5, characterized in that: A front hinge shaft and a front rotating rod are provided between the front gate and the linkage rod. The front hinge shaft is located above the front rotating sleeve, and the front rotating rod is located between the front hinge shaft and the front rotating sleeve.
7. The free-entry / exit limiting bar according to claim 6, characterized in that: A reinforcing rib is provided between the front gate and the front rotating rod, and the reinforcing rib is inclined between the front gate and the front rotating rod.
8. The free-entry / exit limiting bar according to any one of claims 1 to 4, characterized in that: It also includes a front door lock, which consists of a front lock hook and a front lock bar; the front lock hook is rotatably mounted on the railing, and the front lock bar is fixedly mounted on the front gate.
9. The free-entry / exit limiting bar according to claim 8, characterized in that: The front door lock also includes a front swing shaft and a front swing shaft sleeve. The front swing shaft is rotatably located inside the front swing shaft sleeve, and the front swing shaft sleeve is fixedly located at the front end of the gate. The front lock hook is linked with the front swing shaft. The front gate is arched, and the bottom end of the front gate is provided with a bend. The front lock rod is located on the bend.
10. The free-entry / exit limiting bar according to claim 9, characterized in that: The front door lock also includes a handle, which is linked to the front swing shaft.