Anti-bite helmet for pig farm breeding
By designing anti-bite armor for pig farms, using a spring-loaded layer and fixing straps, the problem of pigs biting each other and sows biting their piglets was solved, achieving the effect of preventing bites and reducing losses.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NORTHEAST AGRICULTURAL UNIVERSITY
- Filing Date
- 2023-12-06
- Publication Date
- 2026-04-24
AI Technical Summary
In existing pig farms, pigs frequently bite each other and sows bite their piglets, leading to economic losses and health problems. Existing anti-bite devices also hinder pigs from eating.
A bite-proof armor for pig farming has been designed, including a back armor, hind leg armor, front leg armor, and ear armor. It is composed of a spring body layer, a breathable cushioning layer, and a fixing base fabric layer. It is fixed to the pig by the steel spring structure of the spring body layer and the fixing straps to prevent bites.
It effectively prevents pig bites and sow biting incidents, reduces the risk of injury and death, ensures the survival rate of pigs, reduces breeding losses, and does not hinder the pigs' normal feeding.
Smart Images

Figure CN117461574B_ABST
Abstract
Description
Technical Field
[0001] This invention pertains to protective devices, specifically anti-bite armor for use in pig farms. Background Technology
[0002] In pig farms with communal pig farming, multiple pigs often live in the same area, making them prone to fighting and biting each other. This can lead to reduced feed conversion rates and delayed market entry, or even bleeding, injury, infection, and death, resulting in economic losses and severely hindering healthy pig farming. During farrowing, cannibalism is common among sows, and even slight mishandling can cause serious losses. Generally, sows refusing to nurse and biting piglets are more common in primiparous sows, i.e., sows giving birth for the first time. These sows lack experience and are more prone to nervousness. If piglets nuzzle the sow, it can cause significant stress, leading to the sow biting the piglets. Currently, there are no effective countermeasures for occasional biting of piglets by gilts during farrowing; some sows, especially gilts, become extremely agitated during farrowing, often killing piglets, sometimes resulting in the death of multiple piglets. A search revealed the following patents: CN202320125117.7, entitled "Anti-bite muzzle for pig breeding"; CN202010987801.7, entitled "Anti-bite tail cover for pigs"; CN202021503735.3, entitled "Anti-bite tail device for piglets"; and CN201820002688.0, entitled "Anti-bite piglet iron ring structure." All these patents relate to devices for preventing pig bites, but they are all localized and have many limitations in application. For example, the anti-bite muzzle for pig breeding includes an upper muzzle cover, a lower muzzle cover, and a safety ring. The upper and lower mouthpieces are symmetrically connected to mounting blocks on both sides. An elastic band is connected to the bottom of each mounting block, and a through groove runs through the inside of the elastic band. Fixed posts are symmetrically connected to both sides of the lower mouthpiece, with a positioning rod at one end. A rotating plate is movably connected to the outer side of the positioning rod, and the rotating plate engages with the through groove. This invention utilizes the elastic band; by pulling the elastic band, the rotating plate moves through the through groove. Adjusting the angle of the rotating plate limits and blocks the elastic band, thus connecting the upper and lower mouthpieces. The elasticity of the band makes it suitable for pigs with different mouth sizes, effectively improving the applicability of the anti-bite mouthpiece. While this device prevents biting between pigs, it can hinder their feeding. Therefore, to avoid mutual biting and sow biting incidents when multiple pigs are together, without hindering feeding, providing an anti-bite armor for pig farms has become a critical and urgent problem to solve. Summary of the Invention
[0003] The present invention aims to overcome the shortcomings of the prior art and provides a bite-proof armor for pig farming.
[0004] The present invention relates to a pig farm anti-bite armor, comprising an armor body, wherein the armor body is composed of a back armor, hind leg armor, front leg armor and ear armor connected together, and the back armor, hind leg armor and front leg armor are each provided with fixing straps.
[0005] As a further improvement of the present invention, the armor body is composed of a spring layer, a breathable cushioning layer and a fixing base fabric layer from the outside to the inside. The spring layer is a steel spring, the breathable cushioning layer is made of sponge material, and the fixing base fabric layer is made of cotton fiber cloth.
[0006] As a further improvement of the present invention, a back support frame is fixed on the fixed base fabric layer of the back armor, located at the center of the back side, running longitudinally from front to back through the entire length of the fixed base fabric layer of the back armor. The back support frame is composed of two back support frame longitudinal rods and two or more back support frame cross rods fixed at intervals between the two back support longitudinal rods. There are sponges fixed to the fixed base fabric layer on both sides below the two back support frame longitudinal rods, and spring layers are fixed on both sides of the two back support frame longitudinal rods, with the spring layers placed on the sponges and fixed to them.
[0007] As a further improvement of the present invention, all the crossbars of the back support frame are arc-shaped.
[0008] As a further improvement of the present invention, the back support frame and the spring body layer are fixed together by welding.
[0009] As a further improvement of the present invention, an ear armor is provided on each side of the front back armor; the back armor extends downward to the sides of the abdomen, and the back armor on the front side of the abdomen is connected to the front leg armor and the back armor on the rear side.
[0010] As a further improvement of the present invention, the ear armor is an ear sleeve structure, consisting of upper and lower armor structures. The outer layer of the ear armor is connected to the head side edge of the back armor. The spring body layer of the ear armor is relatively thin, which is 1 / 4 to 1 / 3 of the thickness of the back armor.
[0011] As a further improvement of the present invention, the spring layer is the outer layer of the armor structure, with a thickness of 0.5-1 cm, and is composed of multiple sets of adjacent armor springs connected together. The armor spring is composed of armor spring spiral wires, armor spring spiral wire gaps, spring connecting parts, and armor spring cavities. The armor spring spiral wires are made of spring steel wires, and the spring steel wires of the armor spring spiral wires are spiral-shaped, forming a spiral-shaped long cylinder. The cross-section of the armor spring spiral wires is circular, and the diameter of the circle is 0.5-1 mm. After the spiral armor spring spiral wires are wound into a spiral, the gap between two adjacent spirals is the armor spring spiral wire gap, and the width of the armor spring spiral wire gap is 1-2 mm. The armor spring cavity is the inner cavity of the spiral-shaped long cylinder formed by the spiral armor spring spiral wires, and is cylindrical. The diameter of the long cylinder formed by the cylindrical armor spring cavity and the wall formed by the outer spiral is 0.5-1 cm. The spring connecting parts are the overlapping parts after two adjacent armor spring spiral wires are connected.
[0012] As a further improvement of the present invention, the fixed base fabric layer is 2-5 cm wider than the periphery of the spring body layer.
[0013] As a further improvement of the present invention, the fixing strap is a tethered strap or a Velcro strap.
[0014] This invention relates to an anti-bite armor for pig farms, which consists of an outer layer of armor worn by the pig. Different sizes of armor can be designed to fit different pig sizes. The securing straps firmly attach the armor to the pig. The outer spring layer of the armor structure is made of steel springs, effectively preventing bites and significantly reducing the risk of injury or even death, thus ensuring pig survival rates and reducing farming losses. The spiral spring wires increase the thickness of the spring layer while using less material and reducing weight, so the armor does not increase the pig's energy consumption. This invention is simple to manufacture, highly operable, low in cost, and highly effective. Attached Figure Description
[0015] Figures 1-2 This is a schematic diagram of the structure of the present invention;
[0016] Figure 3 This is a schematic diagram of the armor body structure of the present invention;
[0017] Figure 4 This is a schematic diagram of the back support frame structure of the present invention;
[0018] Figure 5 This is a schematic diagram of the spring body layer structure of the present invention. Implementation
[0019] The present invention relates to a pig farm anti-bite armor, comprising an armor body 1, which is composed of a back armor 2, a hind leg armor 3, a front leg armor 4, and an ear armor 5 connected together. Each of the back armor 2, hind leg armor 3, and front leg armor 4 is provided with a fixing strap 6, which is either a tether or a Velcro 13. The tether is made of cotton fiber, woven from cotton thread, with a width of 1-2 cm and a thickness of 0.2-0.5 mm, and is Y-shaped. The forked ends of the Y are fixed to the edge of the armor, and the included angle between the two forks is 45-60º. The tail of the Y-shaped fork is relatively long and free. Depending on the location of the tether, it can be divided into a head tether, a front leg tether, a belly tether, and a hind leg tether. The Velcro 13 is composed of a Velcro female and a Velcro female used together.
[0020] The back armor 2, hind leg armor 3, foreleg armor 4, and ear armor 5 are all composed of a spring layer 10, a breathable cushioning layer 11, and a fixing base fabric layer 12 from the outside to the inside. The spring layer 10 is a steel spring. The breathable cushioning layer 11 is made of sponge material, which is a sponge made of foamed plastic polymer with a thickness of 2-5 mm. The size and shape of the breathable cushioning layer 11 are the same as those of the spring layer 10. The fixing base fabric layer 12 is made of cotton fiber fabric, which is cut according to the size and shape of the spring layer 10. However, at all perimeters, the fixing fabric layer 12 is 2-5 cm wider than the perimeter of the spring layer 10.
[0021] The spring layer 10 is the outer layer of the armor structure, with a thickness of 0.5-1 cm. It is composed of multiple sets of adjacent armor springs. Each armor spring consists of an armor spring spiral wire 14, an armor spring spiral wire gap 15, a spring connection part 16, and an armor spring cavity 17. The armor spring spiral wire 14 is made of spring steel wire, and the spring steel wire of the armor spring spiral wire 14 is spiral-shaped, forming a spiral-shaped long cylinder. The cross-section of the armor spring spiral wire 14 is circular, and the diameter of the circle is 0.5-1 cm. The gap between two adjacent spirals of the spiral armor spring spiral wire 14 after the spiral armor spring spiral wire 14 is wound into a spiral is called the armor spring spiral wire gap 15, and the width of the armor spring spiral wire gap 15 is 1-2 mm; the armor spring surrounding cavity 17 is the inner cavity of the spiral long tube formed by the spiral armor spring spiral wire 14, and it is cylindrical. The diameter of the long tube formed by the cylindrical armor spring surrounding cavity 17 and the wall formed by the outer spiral is 0.5-1 cm; the spring connecting part 16 is the overlapping part after two adjacent armor spring spiral wires 15 are connected.
[0022] When assembling the spring layer 10, the operator holds a coiled wire 14, specifically called the moving wire, and inserts its end into the shell spring cavity 17 of another coiled wire 14. The inserted coiled wire is specifically called the fixed wire. Then, the operator rotates the moving wire so that its end comes out through the gap 15 between the coiled wires of the fixed wire. The operator continues to rotate the moving wire so that its end comes out through the next gap 15 between the coiled wires of the fixed wire and into the shell spring cavity 17 of the fixed wire. The operator continues to rotate the moving wire so that its end comes out through the next gap 15 between the coiled wires of the fixed wire, and so on, until a specific position is reached, at which point the moving wire and the fixed wire are connected together, thereby forming the spring layer 10.
[0023] The breathable cushioning layer 11 is made of sponge with a thickness of 2-5 mm. It is placed under the spring body layer 13. The manufacturing process involves mixing foaming resin, foaming agent, and adhesive resin together and then foaming the mixture. During foaming, the mixture is placed in a mold and foamed, and closed cells are broken by mechanical force to obtain foamed sponge with a density of 0.028 g / cm and a 25% compression hardness of KPa. When making the breathable cushioning layer 11, a foaming mold is made according to the breathable cushioning layer 11, and then the breathable cushioning layer 11 of a specific size and shape can be obtained by foaming. If there is no manufacturing capability, ready-made foamed sponge can be used and cut to make a breathable cushioning layer 11 of a specific size and shape. The size and shape of the breathable cushioning layer 11 are the same as those of the spring body layer 10. The fixing layer is made of cotton fiber fabric and is cut to fit the size and shape of the spring layer. However, at the perimeter, the fixing layer is 2-5 centimeters wider than the perimeter of the spring layer to ensure the bite-resistant armor for pig farming is completely wrapped around it.
[0024] The back armor 2 is an armor covering the back of the pig's body, running longitudinally from head to tail. Its front end extends to the middle of the eyes, and its rear end reaches above the tail, obscuring it by 3-5 centimeters. The back armor 2 extends downwards to the sides of the belly. On the front side of the back armor 2, the front leg armor 4 connects to the sides, and on the rear side, the hind leg armor 3 connects to the sides. The front leg armor 4 is an armor placed on the outside of the front legs, with arc-shaped sides. One front leg tether is placed 1-2 centimeters from the apex of each arc. The free end of the front leg armor 4 reaches 1-2 centimeters above the knee joint of the pig's front leg. The two front leg tethers pass through the inner thigh of the pig's front leg to the opposite side, then converge at the center outside the front leg armor 4 on the outer thigh, continuing diagonally upwards and passing through the inner thigh again. After passing from the inner thigh to the opposite side, the hind leg armor 4 converges again at the center outside the outer thigh of the pig and is then tied together to fix the hind leg armor 4 to the front leg, thus protecting the pig's front leg. The hind leg armor 3 is an armor set on the outside of the hind leg, with arc-shaped sides. A hind leg tether is set 1-2 cm from the apex of each arc. The free end of the hind leg armor 3 reaches 1-2 cm above the knee joint of the pig's hind leg. The hind leg tether passes through the inner thigh of the pig's hind leg to the opposite side, converges at the center outside the outer thigh of the hind leg armor 3, continues diagonally upward, passes through the inner thigh of the pig's hind leg to the opposite side, and converges again at the center outside the outer thigh of the hind leg armor 3, thus tying together to fix the hind leg armor 3 to the hind leg, thus protecting the pig's hind leg and preventing it from being bitten by other pigs.
[0025] On the pig's head, the back armor 2 covers the entire top of the head, extending to the middle of the two eyes but following the upper edge of the eye sockets backward, then descending to cover the upper part of the cheeks, and then covering both sides of the neck; the back armor 2 is slightly narrower at the neck, that is, the outer edges of the back armor 2 on both sides of the head are arc-shaped, and the outer edges of the back armor 2 on both sides of the body are also arc-shaped, and the intersection of the two arcs is relatively narrow; at the pig's ears, an ear armor 5 is provided on each side of the back armor 2. The ear armor 5 is an ear cover structure, covering the outside of the ears, and is composed of upper and lower armor structures. The outer fixing base fabric layer 12 of the ear armor 5 is connected to the head side edge of the back armor 2. The spring layer 10 is relatively thin, about 1 / 4 to 1 / 3 the thickness of the back armor 2. The ear armor 5 is widest in the middle, with a width of 5-15 cm. The opening is slightly narrower, 1-2 cm shorter than the widest part in the middle. The outer side is a free end. A head tether is provided on the back side of the ear armor 5. The head tethers on both sides extend to the opposite side and continue to the back of the neck. The two head tethers are tied together to protect the pig's head. The back armor 2 has a belly tether on each of the two side edges in the middle of the abdomen. The belly tether passes under the abdomen to the opposite side and then meets in the center of the back armor 2 on the pig's back and is tied together to protect the pig's abdomen.
[0026] On the fixed base fabric layer 12 of the back armor 2, a back support frame 7 is fixed at the center of the back side, running longitudinally from front to back through the entire length of the fixed base fabric layer 12 of the back armor 2. The back support frame 7 is composed of two back support frame longitudinal rods 8 and two or more back support frame cross rods 9 fixed at intervals between the two back support longitudinal rods 8. The distance between the two back support frame longitudinal rods 8 is 5-10 cm, and the cross-section of each back support frame longitudinal rod 8 is circular with a diameter of 2-5 mm. At the front and rear ends of the back support frame 7, the two back support frame longitudinal rods 8 are bent relative to each other and welded together to form a semi-circular end. The back support frame cross rods 9 are all arc-shaped and are horizontally arranged supports. There are multiple cross rods, and the distance between two adjacent back support frame cross rods 9 is 5-10 cm. The two ends of the back support frame cross rods 9 are welded to the opposite sides of the two back support frame longitudinal rods 8, and the cross-section of each back support frame cross rod 9 is circular with a diameter of 2-5 mm. Sponge is fixed to the base fabric layer 12 on both sides below the two back support longitudinal rods 8. The spring body layer 10 is fixed by welding on both sides below the two back support longitudinal rods 8, and the spring body layer 10 is placed on the sponge and fixed to it.
[0027] When making the armor body 1, firstly, the spring layer 10, the breathable cushioning layer 11, and the fixing fabric layer 12 are cut to the required size and shape according to the design. The spring layer 10 and the breathable cushioning layer 11 are the same in shape and size, and the shape of the fixing fabric layer 12 is the same as that of the spring layer 10, with its edge being 2-5 cm wider than the perimeter of the spring layer 10. Then, the breathable cushioning layer 11 is placed on the upper surface of the fixing fabric layer 12, and a sewing machine is used to sew around the perimeter of the breathable cushioning layer 11 to fix the breathable cushioning layer 11 to the fixing fabric layer 12. After that, a line is sewn every 2-5 cm on the back armor 2, and a line is sewn every 1-2 cm on the hind leg armor 3, the front leg armor 4, and the ear armor 5. First, use thread to fix the breathable cushioning layer 11 to the middle of the fixing fabric layer 12; then place the prepared spring body layer 10 on top of the breathable cushioning layer 11, fold the edge of the excess fixing fabric layer 12 upwards to wrap the edges of the spring body layer 10 and the breathable cushioning layer 11, and sew around it with a sewing machine. Then, use needle and thread to dot-sew the entire armor, so that all the spring body layers 10 of the armor are firmly fixed to the outside of the breathable cushioning layer 11, with adjacent sewing points 2-3 cm apart. In this way, the spring body layer 10, the breathable cushioning layer 11 and the fixing fabric layer 12 are sewn together; finally, use needle and thread to sew and fix the fixing straps 6 of each part to the edge of the armor body, completing the production of the armor body 1.
[0028] This invention relates to a pig farm anti-bite armor, which is a layer of armor worn on the outside of the pig's body. The armor can be designed in different sizes according to the pig's size; larger pigs wear larger armor, and smaller pigs wear smaller armor. The armor consists of several parts: a back armor, hind leg armor, front leg armor, ear armor, tethering straps, and a back support frame. The armor's structure is characterized by an outer spring layer, an inner breathable cushioning layer, and an innermost fixing fabric layer. The armor is secured to the pig's body with tethering straps. The outer spring layer is made of spring steel; because spring steel is relatively hard, when bitten by a pig's teeth, the spring steel armor... The spiral spring wire can make a pig's teeth feel extremely uncomfortable. After several times, the pig will develop a memory that it cannot bite, as biting will cause damage. This effectively prevents bites. Even if a bite does occur, the spring layer will prevent the bite from being broken open and causing infection or other accidents. Furthermore, it prevents large chunks of flesh from being bitten off, greatly reducing the risk of injury or even death. This ensures the survival rate of the pigs and reduces breeding losses. The spiral armor-like spring wire increases the thickness of the spring layer while using less material and being lightweight, resulting in minimal energy expenditure for the pig. This invention is simple to manufacture, highly operable, low in cost, and highly effective.
Claims
1. A bite-proof armor for pig farming, comprising an armor body (1), characterized in that... The armor body (1) is composed of a back armor (2), hind leg armor (3), front leg armor (4), and ear armor (5). The back armor (2), hind leg armor (3), and front leg armor (4) are all equipped with fixing straps (6). The armor body (1) consists of a spring layer (10), a breathable cushioning layer (11), and a fixing base fabric layer (12) from the outside in. The spring layer (10) is a steel spring, the breathable cushioning layer (11) is made of sponge material, and the fixing base fabric layer (12) is made of cotton fiber cloth. On the back armor (2)... On the fixed base fabric layer (12) of the back armor (2), a back support frame (7) is fixed at the center of the back side, running longitudinally from front to back through the entire length of the fixed base fabric layer (12). The back support frame (7) is composed of two back support frame longitudinal rods (8) and two or more back support frame horizontal rods (9) fixed at intervals between the two back support longitudinal rods (8). There is a sponge fixed to the fixed base fabric layer (12) on both sides below the two back support frame longitudinal rods (8), and a spring layer (10) is fixed to both sides of the two back support frame longitudinal rods (8), and the spring layer (10) is placed on the sponge and fixed to it. The back support crossbars (9) are all arc-shaped; the spring layer (10) is the outer layer of the armor structure, with a thickness of 0.5-1 cm, and is composed of multiple sets of adjacent armor springs. The armor spring is composed of armor spring spiral wire (14), armor spring spiral wire gap (15), spring connection part (16), and armor spring cavity (17). The armor spring spiral wire (14) is made of spring steel wire. The spring steel wire of the armor spring spiral wire (14) is spiral-shaped, forming a spiral-shaped long cylinder. The cross-section of the armor spring spiral wire (14) is circular. The diameter is 0.5-1 mm. The gap between two adjacent spirals after the spiral armor spring spiral wire (14) is wound into a spiral is called the armor spring spiral wire gap (15). The width of the armor spring spiral wire gap (15) is 1-2 mm. The armor spring cavity (17) is the inner cavity of the spiral long tube formed by the spiral armor spring spiral wire (14). It is cylindrical. The diameter of the long tube formed by the cylindrical armor spring cavity (17) and the outer spiral wall is 0.5-1 cm. The spring connection part (16) is the part where two adjacent armor spring spiral wires (14) overlap after being connected.
2. The anti-bite armor for pig farming according to claim 1, characterized in that... The back support frame (7) and the spring body layer (10) are fixed together by welding.
3. The anti-bite armor for pig farming according to claim 1 is characterized in that an ear armor (5) is provided on each side of the front back armor (2); the back armor (2) extends downward to the sides of the belly, and the back armor (2) on the front side of the belly is connected to the front leg armor (4) and the back leg armor (3) is connected to the rear side.
4. The anti-bite armor for pig farming according to claim 3, characterized in that... The ear armor (5) is an ear sleeve structure, consisting of two layers of armor structure. The outer layer of the ear armor (5) is a fixed base fabric layer (12) connected to the head side edge of the back armor (2). The spring body layer (10) of the ear armor (5) is relatively thin, which is 1 / 4 to 1 / 3 of the thickness of the back armor (2).
5. The anti-bite armor for pig farming according to claim 3, characterized in that... The fixed base fabric layer (12) is 2-5 cm wider than the periphery of the spring body layer (10).
6. The anti-bite armor for pig farming according to claim 1, characterized in that... The fixing strap (6) is a tether strap or a Velcro strap (13).
Citation Information
Patent Citations
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