Livestock salt feeding device for animal husbandry

Abstract

The livestock salt feeding device for the animal husbandry comprises a height adjusting mechanism arranged between a base and a salt brick placing frame, and the height adjusting mechanism comprises two lead screws and a driving structure; the two lead screws are vertically arranged on the two sides of the salt brick placing frame, each lead screw is connected with a nut seat, and the salt brick placing frame is connected between the two nut seats; the driving structure comprises a pedal which is arranged above the base and located on one side of the two lead screws. The screw rod is vertically fixed at the bottom of the pedal; one end of the internal thread sleeve is in threaded connection with the screw, the other end of the internal thread sleeve is rotationally connected with the top of the base, and the internal thread sleeve is extruded by threads of the screw to rotate when the pedal is treaded to drive the screw to move; the two belt transmission assemblies are connected between the internal thread sleeve and the two lead screws; and the elastic reset assembly is arranged between the pedal and the base. According to the invention, the height of the salt brick can be automatically adjusted according to the self gravity of livestock animals with different body sizes.

Description

Technical Field

[0001] The invention relates to the technical field of animal husbandry, in particular to a salt feeding device for livestock in the animal husbandry industry. Background Art

[0002] In order to improve the quality and efficiency of animal husbandry in rural livestock and poultry breeding, optimize the quality of livestock and poultry products, promote the high-quality development of animal husbandry, and ensure that the development process of livestock and poultry breeding has greater economic benefits, it is necessary to optimize and improve the livestock and poultry breeding process. In the process of raising livestock and poultry, feeding salt can increase the appetite of livestock and poultry, and supplement them with minerals and trace elements during the salt feeding process, which helps to increase the milk and meat production of livestock and poultry, and promote the economic development of agricultural livestock and poultry breeding.

[0003] There are currently two main ways to feed salt to livestock: The first is to make salt bricks for the animals to lick. The second is to add salt to feed and mix it for the animals to eat. The second way of feeding salt requires precise mixing of feed according to the size and needs of the livestock, and it is necessary to ensure that the mixing is even. If it is uneven, there will be a risk of excessive salt in some areas, leading to salt poisoning. The first method of feeding salt using salt bricks has the advantages of convenience and practicality, allowing livestock to lick the right amount of salt according to their needs, and can avoid the risk of poisoning caused by excessive salt intake, so it is very popular.

[0004] In the method of feeding salt with salt bricks, in order to ensure that the livestock can lick all surfaces of the salt bricks evenly and not cause contamination to the salt bricks, the salt bricks are usually not placed in the trough, but the salt bricks are horizontally suspended by a bracket for licking. However, for livestock at different growth stages, their own sizes are often different, and the height position requirements for licking the salt bricks are often different. Therefore, the height of the salt bricks needs to be adjusted accordingly according to the different growth stages of the livestock.

[0005] The traditional adjustment method uses manual adjustment of the height of the bracket to adjust the height of the salt brick, but manual adjustment is not timely, and it is difficult to adjust it manually all the time. In order to solve the problem of untimely manual adjustment, some salt feeding devices use automatic adjustment to adapt to the timely adjustment of the height of the salt brick, and use an electrical drive structure to drive the salt brick placement rack to lift and lower for height adjustment. However, although this method increases the timeliness of adjusting the height of the salt brick, it is difficult to locate the height of the salt brick. It is necessary to add corresponding detection elements to detect the growth stage of the livestock to ensure that the height of the salt brick matches the livestock. For example, the patent with publication number CN219781208U discloses a licking brick clamping rod. By adding a licking brick height adjustment air column, the licking brick can automatically adjust the height according to the age of the livestock. Since it needs to be automatically adjusted according to the age of the livestock, the above patent requires additional use of relevant livestock age detection structural devices to cooperate with the height adjustment air column to automatically adapt to the adjustment process. For example, the patent with publication number CN215677239U discloses an automatic collection device for group livestock breeding data. By combining the electronic scale body, the detection plate and the lick brick feeder, the lick brick adjustment is combined with the livestock data collection. The height of the lick brick is adjusted accordingly through the electric telescopic rod according to the collected livestock growth data. Therefore, additional detection elements are required to achieve precise adjustment of the salt brick height. Summary of the invention

[0006] The purpose of the present invention is to provide a salt feeding device for livestock in animal husbandry, so as to solve the problem that when the height of salt bricks is automatically adjusted, it is necessary to rely on detection elements to ensure that the adjusted salt bricks are at an appropriate height.

[0007] The technical solution of the present invention is:

[0008] A salt feeding device for livestock in animal husbandry comprises a base and a salt brick placing rack arranged above the base, a height adjustment mechanism is arranged between the base and the salt brick placing rack, and the height adjustment mechanism comprises two lead screws and a driving structure; the two lead screws are vertically arranged on both sides of the salt brick placing rack, each lead screw is connected with a nut seat, and the salt brick placing rack is connected between the two nut seats; the driving structure comprises: a pedal, arranged above the base and located on one side of the two lead screws; a screw rod, vertically fixed to the bottom of the pedal; an internally threaded sleeve, one end of which is threadedly connected to the screw rod and the other end is rotatably connected to the top of the base, the internally threaded sleeve is used to rotate by being squeezed by the screw rod thread when the pedal is stepped on to drive the screw rod to move; two sets of belt transmission assemblies are connected between the internally threaded sleeve and the two lead screws, and the two sets of belt transmission assemblies are used to drive the two lead screws to rotate synchronously when the internally threaded sleeve rotates; an elastic reset assembly is arranged between the pedal and the base, and is used to drive the pedal to return to its initial position after being stepped on.

[0009] Preferably, as a further improvement of the present invention, the belt transmission assembly includes a driving pulley, a driven pulley and a belt, the driving pulley is fixed on the internal threaded sleeve, the driven pulley is fixed on the screw, and the belt is connected between the driving pulley and the driven pulley.

[0010] Preferably, as a further improvement of the present invention, the driving pulley and the driven pulley are both synchronous pulleys, and the belt is a synchronous belt.

[0011] Through the above arrangement, it is possible to prevent the belt drive from slipping and causing the position of the salt brick placement rack to deviate after adjustment.

[0012] Preferably, as a further improvement of the present invention, the elastic reset assembly includes a vertically arranged telescopic sleeve and a reset spring, the telescopic sleeve includes a fixed sleeve and a sliding rod, one end of the sleeve is fixed to the top of the base, one end of the sliding rod is slidably connected in the sleeve, the other end of the sliding rod is fixed to the bottom of the pedal, the reset spring is sleeved on the outside of the sliding rod, and the two ends of the reset spring are respectively connected to the bottom of the pedal and the other end of the sleeve.

[0013] Preferably, as a further improvement of the present invention, there are multiple groups of elastic reset components, which are evenly distributed at the bottom of the pedal.

[0014] The above arrangement can increase the elastic supporting capacity of the pedal.

[0015] Preferably, as a further improvement of the present invention, the lead screw is a variable pitch lead screw, and the pitch increases sequentially from bottom to top.

[0016] Through the above arrangement, the transition from slow to fast rising stage of the nut seat can be achieved, and the rising distance of the nut seat can be made higher. For larger livestock and poultry animals, it can be quickly adjusted to the licking height they need.

[0017] Preferably, as a further improvement of the present invention, it also includes a limiting mechanism, which is used to limit the rotation angle of the lead screw after adjusting the height of the salt brick placement rack, and the limiting mechanism includes: two fixed gear plates, which are respectively fixed on the two lead screws and located on the lower side of the nut seat, and a circle of first ratchet teeth is provided on the lower end face of the fixed gear plate; two moving gear plates, which are respectively mounted on the two lead screws and located directly below the two fixed gear plates, and the moving gear plates can slide up and down relative to the lead screws, and a circle of second ratchet teeth for meshing with the first ratchet teeth is provided on the upper end face of the moving gear plate; a connecting plate, which is connected between the two moving gear plates; a lifting assembly, which is connected to the connecting plate, and is used to drive the connecting plate and the two moving gear plates to rise and fall synchronously, so as to realize the meshing or separation process between the two moving gear plates and the two fixed gear plates.

[0018] Preferably, as a further improvement of the present invention, the angle between the first ratchet tooth and the lower end surface of the fixed gear plate, and the angle between the second ratchet tooth and the upper end surface of the movable gear plate are both 10° to 20°.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] Compared with the device that adopts the electric drive structure for height adjustment, the present invention mainly realizes the automatic height adjustment process of the salt brick placement rack by using the gravity of the livestock as the driving force according to the principle that the livestock generate different gravity due to the different body sizes in different growth stages. When the livestock stands on the pedal, the pedal will be pressed down to compress the elastic reset component. The screw will be driven to move synchronously during the pressing process of the pedal. When the screw is pressed down, the internal threaded sleeve will be squeezed by the screw thread to rotate. When the internal threaded sleeve rotates, the two lead screws are driven to rotate synchronously through two sets of belt transmission components. The nut seat is driven to rise vertically by converting the rotational motion into linear motion, thereby driving the salt brick placement rack to rise, thereby realizing the automatic height adjustment process of the salt brick placement rack. There is no need to use a positioning detection element to detect the growth data such as the age or height of the livestock, so that the salt brick can be adjusted to a suitable height, so that short livestock can lick the salt bricks at a lower position, while tall livestock can lick the salt bricks at a higher position. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a salt feeding device for livestock in animal husbandry according to an embodiment of the present invention;

[0022] Figure 2 It is a three-dimensional schematic diagram of a partial structure of a salt feeding device for livestock in animal husbandry according to an embodiment of the present invention;

[0023] Figure 3 It is a three-dimensional schematic diagram of the partial structure of a salt feeding device for livestock in animal husbandry according to an embodiment of the present invention.

[0024] Figure 4 For the present invention Figure 3 A local enlarged schematic diagram of the A in FIG.

[0025] Figure 5 For the present invention Figure 3 A local enlarged schematic diagram of point B in FIG.

[0026] Figure 6 For the present invention Figure 3 A schematic diagram of a top view structure;

[0027] Figure 7 The present invention is a schematic structural diagram of a lifting assembly in a salt feeding device for livestock used in animal husbandry. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 To the attached Figure 7 , the specific implementation methods of the present invention are described in detail. In the description of the invention, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the invention, unless otherwise specified, "plurality" means two or more.

[0030] Example

[0031] like Figures 1 to 3As shown, an embodiment of the present invention provides a salt feeding device for livestock in animal husbandry, comprising a base and a salt brick placing rack 1 arranged above the base. In order to adjust the height of the salt brick placing rack 1, a height adjustment mechanism is provided between the base and the salt brick placing rack 1. Specifically, the height adjustment mechanism comprises two lead screws 2 and a driving structure; the two lead screws 2 are vertically arranged on both sides of the salt brick placing rack 1, each lead screw 2 is connected to a nut seat 21, and the salt brick placing rack 1 is connected between the two nut seats 21; the driving structure comprises: a pedal 31, which is arranged above the base and located on one side of the two lead screws 2; The rod 32 is vertically fixed at the bottom of the pedal 31; the internal threaded sleeve 33 is threadedly connected to the screw 32 at one end and rotatably connected to the top of the base through a bearing at the other end. The internal threaded sleeve 33 is used to rotate by being squeezed by the thread of the screw 32 when the screw 32 moves when the pedal 31 is stepped on; two sets of belt transmission assemblies are connected between the internal threaded sleeve 33 and the two lead screws 2. The two sets of belt transmission assemblies are used to drive the two lead screws 2 to rotate synchronously when the internal threaded sleeve 33 rotates; an elastic reset assembly is arranged between the pedal 31 and the base, and is used to drive the pedal 31 to return to its initial position after being stepped on.

[0032] It should be noted that, considering that different types of livestock have different growth cycles and development speeds, the height adjustment mechanism in this embodiment can only be used to adjust the height of the salt bricks licked by the same type of livestock at different growth stages. The specific adjustment principle is as follows: when the livestock needs to lick the salt bricks, a slope 81 is first added to the front side of the pedal 31 to guide the livestock to walk onto the pedal 31. When the livestock stands on the pedal 31, the pedal 31 is pressed down and the elastic reset component is compressed. During the pressing process of the pedal 31, the screw 32 is driven to move synchronously. Since one end of the screw 32 is in contact with the inner The threaded sleeve 33 is threadedly connected, and the internal threaded sleeve 33 is rotatably connected to the base through a bearing. Therefore, when the screw 32 is pressed down, the internal threaded sleeve 33 will be squeezed by the screw 32 thread to rotate. When the internal threaded sleeve 33 rotates, the two lead screws 2 are driven to rotate synchronously through two sets of belt transmission components. At the same time, the salt brick placement frame 1 is connected between the nut seats 21 on the two lead screws 2 to form a limit for the rotation of the nut seat 21. Therefore, the rotation process of the two lead screws 2 will realize the conversion of rotational motion into linear motion to drive the nut seat 21 to rise vertically, thereby driving the salt brick placement frame 1 to rise, and adjusting the salt brick The height of the placement rack 1 is set so that the livestock animals can lick the food. When the livestock animals leave the pedal 31 after licking, the pedal 3 is driven to rise and reset under the elastic force of the elastic reset component, which is opposite to the above-mentioned transmission principle, thereby driving the salt brick placement rack 1 to descend to the initial position. A storage basket can be set at the initial position of the salt brick placement rack 1 to realize the storage of salt bricks; the automatic adjustment of the height adjustment mechanism is based on the principle of different gravity generated by different sizes of livestock animals, so that the pedals 31 and the screw 32 of different livestock animals descend to different heights, thereby making the number of turns of the internal threaded sleeve 33 different, and the height adjustment mechanism can be adjusted automatically. The number of revolutions transmitted to the lead screw 2 is different, and the height to which the nut seat 21 rises is different, which ultimately makes the height of the salt brick placement rack 1 adjusted to be different. Specifically, in practical applications, according to the different sizes and weights of livestock and poultry animals at different growth stages, the transmission ratio of the belt drive assembly is adjusted to adjust the transmission ratio between the lead screw 2 and the internal threaded sleeve 33 accordingly, and the height position of the nut seat 21 rising is at an appropriate height according to the number of revolutions of the lead screw 2, so that short livestock and poultry animals can lick the salt bricks at a lower position, while tall livestock and poultry animals can lick the salt bricks at a higher position.

[0033] Among them, the belt transmission assembly includes a driving pulley 41, a driven pulley 42 and a belt 43. The driving pulley 41 is fixed on the internal threaded sleeve 33, the driven pulley 42 is fixed on the screw 2, and the belt 43 is connected between the driving pulley 41 and the driven pulley 42. The belt transmission assembly can drive the driving pulley 41 to rotate when the internal threaded sleeve 33 rotates, and the driving pulley 41 rotates to transmit power to the driven pulley 42 through the belt 43.

[0034] Furthermore, in order to prevent the belt drive from slipping and causing the position of the salt brick placement rack 1 to deviate after adjustment, the driving pulley 41 and the driven pulley 42 are both synchronous pulleys, and the belt 43 is set as a synchronous belt, so that the transmission accuracy is maintained and improved through the synchronous belt drive.

[0035] Furthermore, the elastic reset component includes a vertically arranged telescopic sleeve 51 and a reset spring 52. The telescopic sleeve 51 includes a fixed sleeve 511 and a sliding rod 512. One end of the sleeve 511 is fixed to the top of the base, one end of the sliding rod 512 is slidably connected in the sleeve 511, and the other end of the sliding rod 512 is fixed to the bottom of the pedal 31. The sleeve 511 guides the sliding rod 512, so that the pedal 31 is vertically lifted when stepped on. The reset spring 52 is sleeved on the outside of the sliding rod 512, and the two ends of the reset spring 52 are respectively connected to the bottom of the pedal 31 and the other end of the sleeve 511. The reset spring 52 realizes the elastic support of the pedal 31, and after the stepping is completed, the pedal 31 is driven to return to the initial height by its own elastic force, so as to carry out the next automatic adjustment process of licking by livestock.

[0036] Furthermore, Figure 1 and Figure 2 As shown, in order to make the elastic reset assembly maintain stability when supporting the pedal 31, multiple groups of elastic reset assemblies are provided and evenly distributed at the bottom of the pedal 31. Specifically, they are arranged in a circle around the bottom of the pedal 31. By setting up multiple groups of elastic reset assemblies, the elastic supporting capacity of the pedal 31 can be increased.

[0037] Furthermore, Figure 2 As shown, the screw 2 is a variable pitch screw, and the pitch increases from bottom to top. Through the above arrangement, the rising stage of the nut seat 21 can be changed from slow to fast, and the rising distance of the nut seat 21 can be made higher. For larger livestock and poultry animals, it can be quickly adjusted to the licking height they need. The screw 2 and the nut seat 21 are implemented by ball screws. Although the pitch of the screw 2 is changed, the nut seat 21 is in rolling contact with the threaded groove of the screw 2 through the ball, thereby ensuring that the normal lifting and lowering movement process can be achieved.

[0038] Example 2

[0039] This embodiment is based on the embodiment 1. Figures 4 to 7As shown, in order to be able to position the rotation direction of the lead screw 2 in the process of adjusting the height position of the salt brick placement rack 1 by driving the nut seat 21 to rotate through the lead screw 2, to ensure that the lead screw 2 will not reverse, and then to ensure that the height position of the salt brick placement rack 1 after adjustment maintains a certain stability and will not float back and forth, a limiting mechanism is provided on the two lead screws 2, and the limiting mechanism is used to limit the rotation angle of the lead screw 2 after adjusting the height of the salt brick placement rack 1. The limiting mechanism includes: two fixed gear discs 61, which are respectively fixedly mounted on the two lead screws 2 and located at the lower side of the nut seat 21, and the fixed gear discs 61 are respectively fixedly mounted on the two lead screws 2 and located at the lower side of the nut seat 21. A circle of first ratchet teeth is provided on the lower end surface of the wheel disc 61; two movable gear discs 62 are respectively mounted on the two lead screws 2 and are located directly below the two fixed gear discs 61, and the movable gear discs 62 can slide up and down relative to the lead screws 2, and a circle of second ratchet teeth for meshing with the first ratchet teeth is provided on the upper end surface of the movable gear disc 62; a connecting plate 63 is connected between the two movable gear discs 62; a lifting assembly is connected to the connecting plate 63, and is used to drive the connecting plate 63 and the two movable gear discs 62 to rise and fall synchronously, thereby realizing the meshing or separation process between the two movable gear discs 62 and the two fixed gear discs 61.

[0040] In this embodiment, the limiting mechanism can be used to limit the rotation angle of the lead screw 2 after adjusting the height of the salt brick rack 1, so as to ensure that the height of the salt brick rack 1 is in a stable state, which is convenient for livestock to lick. The specific positioning principle is as follows:

[0041] When the livestock and animal uses gravity to drive the lead screw 2 to rotate and adjust the height position of the salt brick placement rack 1 by stepping on the pedal 31 through the transmission component, the connecting plate 63 and the two movable gear plates 62 are driven to rise synchronously through the lifting component, so that the second ratchet teeth on the two movable gear plates 62 are meshed with the first ratchet teeth on the two fixed gear plates 61. When the ratchet teeth are vertically meshed, the inclined surface on the ratchet teeth has a certain margin, which can facilitate the meshing of the two. At the same time, the vertical side walls on the ratchet teeth can realize the anti-reverse limiting function. When the movable gear plate 62 and the fixed gear plate 61 are engaged together, the lead screw 2 is difficult to reverse, thereby ensuring that the height of the salt brick placement rack 1 will not drop, so that the livestock and animal can keep the salt bricks stable during the licking process. After licking, after leaving the pedal 31, the lifting component drives the connecting plate 63 and the two movable gear plates 62 to descend synchronously, release the meshing, and make the salt brick placement rack 1 return to its initial position for the next livestock and animal to lick.

[0042] As an optional implementation of the lifting assembly, the lifting assembly in this embodiment can be implemented by rotating an electrical drive element such as a hydraulic cylinder or an electric telescopic rod.

[0043] As another optional implementation of the lifting assembly, the present embodiment adopts a mechanical transmission structure for implementation. Specifically, Figure 7As shown, the lifting assembly includes: two cylinder bodies 71 fixed on the top of the base, each cylinder body 71 is provided with a piston rod 72, the two cylinder bodies 71 are connected through a connecting pipe 73, the two cylinder bodies 71 and the connecting pipe 73 are filled with liquid, one of the cylinder bodies 71 is arranged below the pedal 31 and is fixed to the bottom of the pedal 31 through the piston rod 72, and the other cylinder body 71 is arranged on the side close to the connecting plate 63; a sliding sleeve 74 is arranged along the length direction of the connecting plate 63, and the top of the sliding sleeve 74 is connected to the connecting frame 7 5 is fixed to the side wall of the piston rod 72 of the other cylinder body 71, the connecting plate 63 is inserted into the sliding sleeve 74 and is slidably connected to the inner wall of the sliding sleeve 74; at least one telescopic spring 76 is arranged in the sliding sleeve 74, one end of the telescopic spring 76 is connected to the inner bottom surface of the sliding sleeve 74, and the other end of the telescopic spring 76 is connected to the bottom of the connecting plate 63. Through the above arrangement, when the movable gear plate 62 rises and drives the second ratchet to engage with the first ratchet on the fixed gear plate 61, a certain margin is left, and the telescopic spring 76 is stretched when rising.

[0044] In this embodiment, when the lifting assembly is used to drive the movable gear plate 62 to rise and mesh with the fixed gear plate 61, the self-gravity of the livestock is also used to achieve this. Figure 7 When the livestock steps on the pedal 31 downward to compress the elastic reset component and drive the lead screw 2 to rotate forward through the transmission structure to drive the salt brick placement rack 1 to rise for height adjustment, the piston rod 72 at the bottom of the pedal 31 will synchronously follow it to fall and squeeze the liquid inside the cylinder body 71 connected to it, so that the liquid level in the right cylinder body 71 drops. Since the two cylinder bodies 71 are connected through the connecting pipe 73, the liquid will be transmitted to the left cylinder body 71, so that the liquid level in the left cylinder body 71 rises, thereby driving the left piston rod 72 to rise. During the rising process of the left piston rod 72, the sliding sleeve 74 is driven to rise through the connecting frame 75. During the rising process of the sliding sleeve 74, the connecting plate 63 and the two moving gear plates 62 are driven to rise through the telescopic spring 76. Due to the existence of the telescopic spring 76, the moving gear plate 6 When the second ratchet tooth of 2 rises and meshes with the first ratchet tooth on the fixed gear plate 61, the fixed gear plate 61 can still follow the forward rotation of the lead screw 2. During the forward rotation of the fixed gear plate 61, the inclined surface of the first ratchet tooth squeezes the second ratchet tooth on the movable gear plate 62, so that the second ratchet tooth of the movable gear plate 62 compresses the telescopic spring 76 to ensure that the forward rotation of the lead screw 2 is not affected. However, due to the existence of the vertical side wall of the second ratchet tooth, the reverse rotation of the fixed gear plate 61 is restricted, making it difficult for the lead screw 2 to rotate in the reverse direction, ensuring that the height of the salt brick placement rack 1 does not drop. When the livestock leaves the pedal 31, it no longer applies pressure to the liquid level in the right cylinder body 71, so that the liquid level between the two cylinder bodies 71 is flush, thereby driving the movable gear plate 62 to descend and disengage from the fixed gear plate 61, and no longer achieving limit.

[0045] Furthermore, the angle between the first ratchet tooth and the lower end surface of the fixed gear plate 61 and the angle between the second ratchet tooth and the upper end surface of the movable gear plate 62 are both 10° to 20°. Through the above-mentioned arrangement, it is possible to ensure that the friction force between the first ratchet tooth and the second ratchet tooth is of an appropriate size, so that when the first ratchet tooth follows the screw 2 to rotate forward, it can press down the second ratchet tooth and the telescopic spring 76 and pass over the second ratchet tooth without being hindered by the second ratchet tooth. Only when the first ratchet tooth follows the screw 2 to rotate reversely will it be hindered by the second ratchet tooth and be limited.

[0046] Among them, in order to facilitate the replacement of salt bricks, the salt brick placement rack 1 is composed of a bent mounting plate 101 with an opening and a connecting bolt 102. The mounting plate 101 is fixed between two nut seats 21. Mounting holes are provided on both sides of the opening of the mounting plate 101. One end of the connecting bolt 102 passes through the mounting hole and the through hole in the middle of the salt brick and is connected to the mounting plate 101. The connecting bolt 102 acts as a support shaft to ensure that the salt brick can rotate after being licked. The connecting bolt 102 can be removed from the mounting plate 101 to facilitate the replacement of salt bricks.

[0047] In summary, the present invention mainly uses the different gravity generated by livestock animals in different growth stages as a driving structure to realize the automatic height adjustment process of the salt brick placement rack by using the livestock animals' own gravity as a driving structure. When the livestock animals stand on the pedal, they will press the pedal down and compress the elastic reset component. The pedal will drive the screw to move synchronously during the pressing process. When the screw is pressed down, the internal threaded sleeve will be squeezed by the screw thread to rotate. When the internal threaded sleeve rotates, the two lead screws are driven to rotate synchronously through two sets of belt drive components. The rotational motion is converted into linear motion to drive the nut seat to rise vertically, thereby driving the salt brick placement rack to rise, thereby realizing the automatic height adjustment process of the salt brick placement rack. The salt bricks can be adjusted to a suitable height without using a positioning detection element to detect the height of the animal, so that short livestock animals can lick the salt bricks at a lower position, while tall livestock animals can lick the salt bricks at a higher position.

[0048] The above disclosures are only several preferred specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A salt feeding device for livestock in animal husbandry, comprising a base and a salt brick placement rack (1) arranged above the base, characterized in that: A height adjustment mechanism is provided between the base and the salt brick placement rack (1), and the height adjustment mechanism comprises: Two screws (2) are vertically arranged on both sides of the salt brick placement rack (1), each screw (2) is connected to a nut seat (21), and the salt brick placement rack (1) is connected between the two nut seats (21); The driving structure comprises: a pedal (31) arranged above the base and located on one side of the two lead screws (2); a screw (32) vertically fixed at the bottom of the pedal (31); an internally threaded sleeve (33) having one end threadedly connected to the screw (32) and the other end rotatably connected to the top of the base, the internally threaded sleeve (33) being used for self-rotation due to the compression of the screw (32) thread when the pedal (31) is stepped on to drive the screw (32) to move; two groups of belt transmission components connected between the internally threaded sleeve (33) and the two lead screws (2), the two groups of belt transmission components being used for driving the two lead screws (2) to rotate synchronously when the internally threaded sleeve (33) rotates; and an elastic reset component arranged between the pedal (31) and the base, and being used for driving the pedal (31) to return to its initial position after being stepped on.

2. The livestock salt feeding device for animal husbandry according to claim 1, characterized in that: The belt transmission assembly comprises a driving pulley (41), a driven pulley (42) and a belt (43); the driving pulley (41) is fixedly mounted on the internal thread sleeve (33); the driven pulley (42) is fixedly mounted on the lead screw (2); and the belt (43) is connected between the driving pulley (41) and the driven pulley (42).

3. The livestock salt feeding device for animal husbandry according to claim 2, characterized in that: The driving pulley (41) and the driven pulley (42) are both synchronous pulleys, and the belt (43) is a synchronous belt.

4. The livestock salt feeding device for animal husbandry according to claim 1, characterized in that: The elastic reset assembly comprises a vertically arranged telescopic sleeve (51) and a reset spring (52); the telescopic sleeve (51) comprises a fixed sleeve (511) and a sliding rod (512); one end of the sleeve (511) is fixed to the top of the base; one end of the sliding rod (512) is slidably connected in the sleeve (511); the other end of the sliding rod (512) is fixed to the bottom of the pedal (31); the reset spring (52) is sleeved on the outside of the sliding rod (512); and the two ends of the reset spring (52) are respectively connected to the bottom of the pedal (31) and the other end of the sleeve (511).

5. The livestock salt feeding device for animal husbandry according to claim 4, characterized in that: There are multiple groups of elastic reset components, which are evenly distributed at the bottom of the pedal (31).

6. The livestock salt feeding device for animal husbandry according to claim 1, characterized in that: The lead screw (2) is a variable pitch lead screw, and the pitch increases sequentially from bottom to top.

7. The salt feeding device for livestock according to any one of claims 2 to 6, characterized in that: It also includes a limiting mechanism, which is used to limit the rotation angle of the lead screw (2) after adjusting the height of the salt brick placement rack (1), and the limiting mechanism includes: Two fixed gear plates (61) are respectively fixedly mounted on the two lead screws (2) and located at the lower side of the nut seat (21); a circle of first ratchet teeth is provided on the lower end surface of the fixed gear plate (61); Two movable gear plates (62) are respectively sleeved on the two lead screws (2) and are located directly below the two fixed gear plates (61). The movable gear plates (62) can slide up and down relative to the lead screws (2). A circle of second ratchet teeth for meshing with the first ratchet teeth is provided on the upper end surface of the movable gear plate (62); A connecting plate (63) connected between the two moving gear plates (62); The lifting assembly is connected to the connecting plate (63) and is used to drive the connecting plate (63) and the two movable gear plates (62) to be lifted and lowered synchronously, thereby realizing the meshing or separation process between the two movable gear plates (62) and the two fixed gear plates (61).

8. The salt feeding device for livestock according to claim 7, characterized in that: The included angle between the first ratchet tooth and the lower end surface of the fixed gear plate (61), and the included angle between the second ratchet tooth and the upper end surface of the movable gear plate (62) are both 10° to 20°.

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