Unattended livestock non-inductive weighing and accurate data acquisition device

Abstract

The application discloses an unmanned livestock non-inductive weighing and precise data acquisition device, and relates to the technical field of livestock non-inductive weighing, which comprises a weighing table, fences are installed on both sides of the weighing table, universal wheels are symmetrically installed at the bottom of the weighing table, fence boards are symmetrically arranged on one side of the fence, step boards are symmetrically and rotatably connected to both sides of the fence, and the device further comprises an automatic door closing mechanism, a buffer mechanism and a multi-stage suspension damping mechanism; through nine-grid multi-layer buffer design, low-frequency vibration caused by slow movement or gravity center deviation of a cow body is absorbed by setting an air bag, the overall tilting of the weighing platform is prevented, and when the livestock deviates to one side of the platform on the weighing table, the distributed sensor feeds back the pressure distribution in real time, the air pressure of the corresponding area air bag is adjusted through a PID control algorithm, automatic balancing of the platform is realized, and thus the measurement can be more accurate.

Description

Technical Field

[0001] This invention relates to the field of non-intrusive weighing technology for livestock, specifically a non-intrusive weighing and accurate data acquisition device for livestock without human intervention. Background Technology

[0002] The unmanned livestock weighing system is an automated solution that utilizes sensors, cameras, and advanced image processing technology to accurately measure and record livestock weight without human intervention. This non-contact system effectively improves the operational efficiency of livestock farms, reduces labor costs, and ensures data accuracy and real-time performance.

[0003] However, when existing unmanned weighing equipment is in use, the constant trampling and shaking of livestock as they are guided onto the weighing platform often interferes with the gravity acquisition device at the bottom of the platform. This interference directly affects the accuracy of the gravity acquisition device's data, which may lead to deviations in the weighing results.

[0004] Furthermore, most existing weighing platforms are designed for a single function, suitable only for livestock of a specific weight. They lack the flexibility to adapt to livestock of different weights for seamless weighing. In practical applications, due to significant differences in livestock weight, when larger animals stand on the weighing platform, their continuous trampling often puts excessive pressure on the platform. This not only affects the accuracy of weighing but may also damage the platform. Therefore, designing a weighing platform that can intelligently adapt to livestock of different weights, achieve seamless weighing, and possess good load-bearing capacity is particularly important.

[0005] Therefore, an unmanned, non-intrusive livestock weighing and precise data acquisition device was proposed to solve the above problems. Summary of the Invention

[0006] In view of this, the technical problem to be solved by the present invention is to propose an unmanned, non-intrusive livestock weighing and accurate data acquisition device to solve the problems of wobbling and poor adaptability of existing weighing platforms.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an unmanned livestock non-intrusive weighing and accurate data acquisition device, including a weighing platform, fences installed on both sides of the weighing platform, universal wheels symmetrically installed at the bottom of the weighing platform, a guardrail symmetrically arranged on one side of the fence, and step plates symmetrically rotatably connected to both sides of the fence, and also including an automatic door closing mechanism, a buffer mechanism and a multi-stage suspension shock absorption mechanism.

[0008] The automatic gate closing mechanism is installed on the upper surface of the fence and is used for the isolated weighing of individual livestock. The buffer mechanism is located above the weighing platform and is used to reduce vibration during weighing. The multi-stage suspension damping mechanism is installed on the upper surface of the weighing platform and is used to adjust the weighing damping for different livestock.

[0009] Preferably, the automatic door closing mechanism includes a push plate, the bottom of which is slidably connected to the upper surface of the fence, and auxiliary plates are rotatably connected to both ends of the push plate. An n-shaped sliding plate is rotatably connected to the end of the auxiliary plate away from the push plate.

[0010] Preferably, the n-shaped slide plate has evenly spaced sliding tooth grooves at both ends, and the tooth surfaces of the sliding tooth grooves are engaged with meshing gears. A transmission rod is rotatably connected to the middle of the meshing gears, and the outer surfaces of both ends of the transmission rod are rotatably connected to the fence. A protective door is fixedly connected to the outer surface of the middle of the transmission rod.

[0011] Preferably, the automatic door closing mechanism further includes an adjusting nut, the inner surface of which has a threaded groove and an internal threaded ring is threadedly connected to the inner surface of the adjusting nut. A limit rod is slidably connected to the side of the internal threaded ring away from the adjusting nut. The upper end of the limit rod is slidably connected to the bottom of the weighing platform, and the end of the limit rod away from the weighing platform is mounted on a caster wheel.

[0012] Preferably, the buffer mechanism includes a rubber anti-slip pad, a sliding plate is uniformly arranged below the rubber anti-slip pad, a primary buffer plate is arranged below the sliding plate, and shock-absorbing grooves are uniformly formed in the primary buffer plate. The outer surface of the sliding plate is slidably connected to the shock-absorbing grooves.

[0013] Preferably, an airbag is provided near the lower surface of the sliding plate in the shock-absorbing groove, the shock-absorbing groove is arranged in a nine-square grid in the primary buffer plate, and a pulley is rotatably connected to the end of the step plate away from the fence, the pulley being used for adjusting the height of the step.

[0014] Preferably, the multi-stage suspension damping mechanism includes a pressure plate, which is rotatably connected to the bottom of the primary buffer plate. A slider is rotatably connected to the end of the pressure plate away from the primary buffer plate. The bottom of the slider is symmetrically slidably connected to the weighing platform. A cylindrical plug is slidably connected to the slider. A damping chamber is slidably connected to the outer surface of the cylindrical plug away from the slider.

[0015] Preferably, a buffer spring is fitted on the outer surface of the cylindrical piston. One end of the buffer spring is fixedly connected to the slider, and the other end of the buffer spring is fixedly connected to the damping chamber. A piston is slidably connected to the inner wall of the damping chamber near the cylindrical piston, and an adjusting sealing plug is slidably connected to the inner wall of the damping chamber away from the cylindrical piston. A pressure oil injection hole is opened between the piston and the adjusting sealing plug on the inner wall of the damping chamber, and hydraulic oil is injected between the piston and the adjusting sealing plug on the inner wall of the damping chamber.

[0016] Preferably, the adjusting sealing plug is rotatably connected to a threaded block on the side away from the piston, and a pulley is threaded onto the outer surface of the threaded block. The pulley is rotatably connected to the damping chamber on both sides. The bottom of the weighing platform is provided with a nine-square grid of buffer grooves, and the damping chamber is linearly fixedly connected to each buffer groove. A pressure sensor is installed at the bottom of each buffer groove.

[0017] Compared with existing technologies, the present invention provides an unmanned, non-intrusive livestock weighing and accurate data acquisition device, which has the following beneficial effects: 1. This solution uses a nine-grid multi-layer buffer design to absorb low-frequency vibrations caused by the slow movement of the cattle or the shift of the center of gravity, preventing the weighing platform from tilting. At the same time, through adaptive adjustment of the airbag algorithm, when the livestock is biased to one side of the weighing platform, the distributed sensors provide real-time feedback on the pressure distribution. The PID control algorithm adjusts the air pressure of the corresponding area of ​​the airbag to achieve automatic balance of the platform, thereby making the measurement more accurate.

[0018] 2. By setting up a multi-stage suspension vibration damping mechanism under the platform, this solution can not only effectively reduce and absorb the vibration and swaying generated by livestock during the weighing process, but also make the weighing platform more stable, enabling the gravity acquisition equipment to obtain more stable and reliable readings, reducing the interference of these external factors on the gravity acquisition equipment, thereby improving the accuracy of the measurement.

[0019] 3. Compared to existing single-technology weighing equipment, the adjustable damping in this solution allows for effective control of the hydraulic oil flow rate between the piston and the adjusting seal by adjusting the size of the pressure injection port. This control over the hydraulic oil flow rate between the piston and the adjusting seal allows for control over the speed at which the cylindrical piston slides in the damping chamber. This design can automatically adjust the damping force according to the cattle's movement state and weight range, accurately absorbing different impact energies. The adjustable damping automatically switches to high damping mode the moment the cattle's hoof touches the ground, attenuating the peak impact force and reducing the risk of sensor overload.

[0020] 4. With the automatic door closing mechanism, it can be easily moved to different positions as needed, making it suitable for farms of various sizes and different weighing environments, greatly improving the flexibility of weighing. Moreover, the adjustable nut at the bottom can be used to control the height of the casters, ensuring that the weighing platform remains level under any ground conditions, thus adapting to various complex terrains and site limitations and improving the convenience of weighing. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2This is a schematic diagram of the structural connection relationship of the automatic door closing mechanism of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the structural connection relationship of the multi-stage suspension damping mechanism of the present invention; Figure 5 For the present invention Figure 4 Enlarged view at point B in the middle; Figure 6 This is an exploded view of the three-dimensional structure of the present invention; Figure 7 This is an auxiliary schematic diagram showing the connection relationship of the multi-stage suspension damping mechanism of the present invention; Figure 8 For the present invention Figure 7 Enlarged view at point C; Figure 9 For the present invention Figure 7 Enlarged view of point D in the middle.

[0022] In the picture: 1. Weighing platform; 11. Guardrail; 12. Balustrade; 13. Casters; 14. Steps; 2. Automatic door closing mechanism; 21. Push plate; 22. Auxiliary plate; 23. N-shaped sliding plate; 24. Sliding tooth groove; 25. Meshing gear; 26. Transmission rod; 27. Protective door; 201. Adjusting nut; 202. Internal threaded ring; 203. Limiting slide rod; 3. Buffer mechanism; 31. Rubber anti-slip mat; 32. Sliding plate; 33. Airbag; 34. Primary buffer plate; 35. Shock-absorbing groove; 36. Pulley; 4. Multi-stage suspension damping mechanism; 41. Pressure plate; 42. Slider; 43. Cylindrical plug; 44. Buffer spring; 45. Damping chamber; 46. Piston; 47. Adjusting sealing plug; 48. Threaded block; 49. Pulley; 401. Pressure oil injection hole. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0025] First Embodiment Please refer to Figures 1 to 9 As shown: To address the problems mentioned in the technical solutions, this application provides an unmanned livestock weighing and accurate data acquisition device, including a weighing platform 1, fences 11 installed on both sides of the weighing platform 1, casters 13 symmetrically installed at the bottom of the weighing platform 1, a guardrail 12 symmetrically arranged on one side of the fence 11, and step plates 14 symmetrically rotatably connected to both sides of the fence 11. It also includes an automatic door closing mechanism 2, a buffer mechanism 3, and a multi-stage suspension shock absorption mechanism 4. An automatic gate closing mechanism 2 is installed on the upper surface of the fence 11. The automatic gate closing mechanism 2 is used for the isolation and weighing of individual livestock. The buffer mechanism 3 is located above the weighing platform 1, and the buffer mechanism 3 is used to reduce the vibration when the weighing platform 1 is weighed. A multi-stage suspension damping mechanism 4 is installed on the upper surface of the weighing platform 1. The multi-stage suspension damping mechanism 4 is used to adjust the weighing damping for different livestock. Specifically, such as Figure 2 and Figure 3 As shown, the bottom of the push plate 21 is slidably connected to the upper surface of the fence 11, and the two ends of the push plate 21 are rotatably connected to the auxiliary plate 22. The end of the auxiliary plate 22 away from the push plate 21 is rotatably connected to the n-shaped sliding plate 23; the two ends of the push plate 21 are evenly provided with sliding tooth grooves 24, and the tooth surfaces of the sliding tooth grooves 24 are engaged with meshing gears 25. The middle of the meshing gears 25 is rotatably connected to the transmission rod 26, and the outer surfaces of the two ends of the transmission rod 26 are rotatably connected to the fence 11. The outer surface of the middle of the transmission rod 26 is fixedly connected to the protective door 27. The upper surface of the fence 11 is equipped with a drive cylinder, and the drive shaft of the drive cylinder is fixedly connected to the middle of the push plate 21. By extending the motor drive shaft, the protective gate 27 can be driven to close on the fence 11, which is beneficial for the isolation and weighing of livestock, while reducing human intervention and reducing the injury to personnel caused by livestock fright.

[0026] Furthermore, such as Figure 9 As shown, the inner surface of the adjusting nut 201 is provided with a threaded groove, and the inner surface of the adjusting nut 201 is threadedly connected with an internal threaded ring 202. The side of the internal threaded ring 202 away from the adjusting nut 201 is slidably connected to a limit slide rod 203. The upper end of the limit slide rod 203 is slidably connected to the bottom of the weighing platform 1, and the end of the limit slide rod 203 away from the weighing platform 1 is mounted on the universal wheel 13. In this solution, by setting a movable guardrail 12, the device can be quickly moved to the livestock measurement site. Compared with the existing technology, the operator does not need to carry it, thereby reducing the intensity of manual handling. Moreover, by setting a rotating adjusting nut 201, the height of the guardrail 12 can be adjusted. The height adjustment of the guardrail 12 can be adapted to different weighing sites, further reducing the shaking phenomenon caused by the unstable installation of the weighing equipment.

[0027] Specifically, such as Figure 9As shown, a sliding plate 32 is evenly arranged below the rubber anti-slip mat 31, and a primary buffer plate 34 is arranged below the sliding plate 32. A shock-absorbing groove 35 is evenly opened in the primary buffer plate 34, and the outer surface of the sliding plate 32 is slidably connected to the shock-absorbing groove 35. An airbag 33 is provided on the lower surface of the sliding plate 32 near the shock-absorbing groove 35. The shock-absorbing groove 35 is opened in a nine-square grid in the primary buffer plate 34. A pulley 36 is rotatably connected to the end of the step plate 14 away from the fence 11. The pulley 36 is used to adjust the height of the step. Specifically, such as Figure 7 and Figure 8 As shown, the pressure plate 41 is uniformly rotatably connected to the bottom of the primary buffer plate 34. The end of the pressure plate 41 away from the primary buffer plate 34 is rotatably connected to the slider 42. The bottom of the slider 42 is symmetrically slidably connected to the weighing platform 1. A cylindrical plug 43 is uniformly slidably connected in the slider 42. A damping chamber 45 is slidably connected to the outer surface of the end of the cylindrical plug 43 away from the slider 42. The space between the cylindrical plunger 43 and the piston 46 is sealed with gas, while the space between the piston 46 and the adjusting sealing plug 47 is filled with hydraulic oil.

[0028] The initial cushioning effect of the buffer spring 44 can reduce the shaking caused by livestock trampling on the platform, and the damping effect of the hydraulic oil between the piston 46 and the adjusting sealing plug 47 can effectively reduce the shaking of the buffer spring 44 during the reset process.

[0029] A buffer spring 44 is fitted on the outer surface of the cylindrical piston 43. One end of the buffer spring 44 is fixedly connected to the slider 42, and the other end of the buffer spring 44 is fixedly connected to the damping chamber 45. A piston 46 is slidably connected to the inner wall of the damping chamber 45 near the cylindrical piston 43. An adjusting sealing plug 47 is slidably connected to the inner wall of the damping chamber 45 away from the cylindrical piston 43. A pressure oil injection hole 401 is opened between the piston 46 and the adjusting sealing plug 47 on the inner wall of the damping chamber 45. Hydraulic oil is injected between the piston 46 and the adjusting sealing plug 47 on the inner wall of the damping chamber 45. The side of the adjusting sealing plug 47 away from the piston 46 is rotatably connected to a threaded block 48. The outer surface of the threaded block 48 is threadedly connected to a pulley 49. The two sides of the pulley 49 are rotatably connected to the damping chamber 45. The bottom of the weighing platform 1 is provided with a buffer groove in a nine-square grid, and the damping chamber 45 is linearly fixedly connected to each buffer groove. A pressure sensor is installed at the bottom of the buffer groove. The pulleys 49 are connected to each other by a belt, and the pulleys 49 have oppositely oriented threaded grooves on both sides inside, and the threaded blocks 48 have symmetrical threads in the threaded grooves inside the pulleys 49.

[0030] Second Embodiment Slightly different from the above embodiments, the core process of this method adopts non-contact data acquisition, and dynamically captures data through multi-sensor collaborative triggering: The system monitors livestock entering the weighing area in real time using infrared sensors or lidar, triggering the simultaneous activation of pressure sensors, 3D cameras, and RFID readers to collect the pressure distribution data from the nine-square grid sensor array on weighing platform 1. Among them, the algorithm for each cell in the nine-square grid on weighing platform 1 is coordinated, and the global weight value is synthesized through a weighted algorithm to avoid single-point force error.

[0031] The formula for synthesizing the nine-square grid weighing algorithm is as follows:

[0032] =0.3, Attitude coefficient Pressure values ​​at each node of the nine-square grid Node position calibration coefficient preset The specific operation is as follows: First, the operator moves the livestock from... Figure 1 As shown, this solution installs 3D cameras and RFID readers on both sides of the fence 12 for the identification and analysis of the cattle herd, preventing multiple weighings. The livestock will initially enter from one side of the fence 12. At this point... Figure 2 and Figure 3 As shown, since livestock-attracting blocks are installed in the fence 11, livestock will enter the fence 11 along the fence board 12. At this time, the protective gate 27 will be opened on the transmission rod 26 by the extension of the drive cylinder. When the livestock enters the weighing platform 1, the attraction blocks will make the cattle stable on the weighing platform 1. At this time, the control device will control the cylinder above the fence 11 to start retracting. The retraction of the cylinder will drive the n-shaped slide plate 23 to drive the meshing gear 25 to start rotating clockwise. When the protective gates 27 are closed, the electric cylinder will stop retracting by the sensor installed in the protective gates 27. The extension of the motor drive shaft can drive the protective gates 27 to close on the fence 11, which is beneficial for the isolation and weighing of livestock, while reducing human intervention and reducing the injury to personnel caused by livestock fright.

[0033] Further as Figure 6 As shown in the breakdown, when livestock step onto the upper surface of the rubber anti-slip mat 31 with the assistance of the step plate 14, the rubber anti-slip mat 31 is equipped with a nine-square grid of sensing devices at its bottom. The airbags 33 are connected to an external air pressure device. When livestock step onto one side of the fence 11, the distributed sensors at the bottom of the weighing platform 1 provide real-time feedback on the pressure distribution. The PID control algorithm adjusts the air pressure of the corresponding area airbags 33 to achieve automatic platform balance and tilt compensation accuracy of ±0.5°. At the same time, such as Figure 7 and Figure 8 As shown, when livestock are on fence 11, the shaking and trampling of the livestock will cause the sensor to vibrate, resulting in measurement errors. In this case, the multi-stage suspension damping mechanism 4 in this solution is used, as detailed below: When the primary buffer plate 34 is trampled by livestock, it will sway downwards. This downward swaying will cause the pressure plates 41 in the nine-grid layout to rotate. Since the pressure plates 41 are symmetrically arranged in each of the nine grids, when the primary buffer plate 34 is subjected to downward pressure, the pressure plates 41 will cause the slider 42 to slide towards the damping chamber 45. At this time, since one end of the cylindrical plug 43 slides in the damping chamber 45 and the seal is good, the compression of the gas in the damping chamber 45 by the cylindrical plug 43 will push the piston 46 against the piston 46. The hydraulic oil injected between the piston 46 and the adjusting sealing plug 47 is squeezed. At this time, the squeezed hydraulic oil will start to flow rapidly along the pressure injection hole 401. The hydraulic oil between the piston 46 and the adjusting sealing plug 47 can reduce the elastic shaking caused by the compression of the buffer spring 44. At this time, the trampling of the livestock can reduce the shaking of the measuring sensor at the bottom of the weighing platform 1 through the multi-stage suspension damping mechanism 4. Through the oil pressure buffering characteristics of the hydraulic damping layer, the high-frequency energy of 20-50Hz generated by the livestock's hoof touching the ground at the moment of trampling is quickly consumed, avoiding data distortion caused by instantaneous overload of the sensor.

[0034] At the same time, such as Figure 8 As shown, the threaded connection between the pulley 49 and the threaded block 48 in this scheme controls the movement of the pulley 49. The rotation of the pulley 49 drives the threaded blocks 48 at both ends of its inner side to move. Since the inner ends of the pulley 49 have threads in opposite directions, when the pulley 49 rotates, the threaded blocks 48 inside will move away from or closer to each other. When the pulley 49 rotates clockwise, it drives the threaded blocks 48 to slide towards the cylindrical plug 43. At this time, the movement of the threaded blocks 48 will cause the rotatingly connected adjusting sealing plug 47 to begin moving. The size of the oil inlet between the adjusting sealing plug 47 and the pressure oil injection hole 401 can control the degree of shaking of the primary buffer plate 34 under different weights. The size of the pressure oil injection hole 401 can effectively control the hydraulic oil flow rate between the piston 46 and the adjusting sealing plug 47. The speed at which the cylindrical piston 43 slides in the damping chamber 45 can be controlled by controlling the hydraulic oil flow rate between the piston 46 and the adjusting sealing plug 47. This design can automatically adjust the damping force range (500N·s / m ~ 3000N·s / m) according to the movement state of the cattle, such as walking, sudden stop, jumping, and weight range of calves (200kg vs. adult cattle 800kg), accurately absorbing different impact energies. The adjustable damping automatically switches to high damping mode when the impact time at the moment the cow's hoof touches the ground is <0.1s, reducing the peak impact force from 3kN to 1.2kN and reducing the risk of sensor overload.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An unmanned, non-intrusive livestock weighing and accurate data acquisition device, comprising a weighing platform (1), with railings (11) installed on both sides of the weighing platform (1), casters (13) symmetrically installed on the bottom of the weighing platform (1), a guardrail (12) symmetrically arranged on one side of the railings (11), and step plates (14) symmetrically rotatably connected to both sides of the railings (11), characterized in that, It also includes an automatic door closing mechanism (2), a buffer mechanism (3), and a multi-stage suspension damping mechanism (4); The automatic door closing mechanism (2) is installed on the upper surface of the fence (11) and is used for the isolated weighing of individual livestock. The buffer mechanism (3) is located above the weighing platform (1) and is used to reduce the vibration of the weighing platform (1) during weighing. The multi-stage suspension damping mechanism (4) is installed on the upper surface of the weighing platform (1) and is used to adjust the weighing damping of different livestock.

2. The unmanned, non-intrusive livestock weighing and precise data acquisition device according to claim 1, characterized in that: The automatic door closing mechanism (2) includes a push plate (21), the bottom of which is slidably connected to the upper surface of the fence (11), and auxiliary plates (22) are rotatably connected to both ends of the push plate (21). An n-shaped sliding plate (23) is rotatably connected to one end of the auxiliary plate (22) away from the push plate (21).

3. The unmanned, non-intrusive livestock weighing and precise data acquisition device according to claim 2, characterized in that: The n-shaped sliding plate (23) has evenly spaced sliding tooth grooves (24) at both ends. The tooth surfaces of the sliding tooth grooves (24) are engaged with meshing gears (25). A transmission rod (26) is rotatably connected to the middle of the meshing gears (25). The outer surfaces of both ends of the transmission rod (26) are rotatably connected to the fence (11). A protective door (27) is fixedly connected to the outer surface of the middle of the transmission rod (26).

4. The unmanned, non-intrusive livestock weighing and precise data acquisition device according to claim 1, characterized in that: The automatic door closing mechanism (2) also includes an adjusting nut (201). The inner surface of the adjusting nut (201) is provided with a threaded groove, and the inner surface of the adjusting nut (201) is threaded with an internal threaded ring (202). The internal threaded ring (202) is slidably connected to a limit slide rod (203) on the side away from the adjusting nut (201). The upper end of the limit slide rod (203) is slidably connected to the bottom of the weighing platform (1), and the end of the limit slide rod (203) away from the weighing platform (1) is mounted on a caster wheel (13).

5. The unmanned, non-intrusive livestock weighing and precise data acquisition device according to claim 1, characterized in that: The buffer mechanism (3) includes a rubber anti-slip pad (31), a sliding plate (32) is uniformly arranged below the rubber anti-slip pad (31), a primary buffer plate (34) is arranged below the sliding plate (32), and a shock-absorbing groove (35) is uniformly opened in the primary buffer plate (34). The outer surface of the sliding plate (32) is slidably connected in the shock-absorbing groove (35).

6. The unmanned, non-intrusive livestock weighing and precise data acquisition device according to claim 5, characterized in that: An airbag (33) is provided on the lower surface of the damping groove (35) near the sliding plate (32). The damping groove (35) is arranged in a nine-square grid in the primary buffer plate (34). A pulley (36) is rotatably connected to the end of the step plate (14) away from the fence (11). The pulley (36) is used for adjusting the height of the step.

7. The unmanned, non-intrusive livestock weighing and precise data acquisition device according to claim 5, characterized in that: The multi-stage suspension damping mechanism (4) includes a pressure plate (41), which is uniformly rotatably connected to the bottom of the primary buffer plate (34). A slider (42) is rotatably connected to the end of the pressure plate (41) away from the primary buffer plate (34). The bottom of the slider (42) is symmetrically slidably connected to the weighing platform (1). A cylindrical plug (43) is uniformly slidably connected in the slider (42). A damping chamber (45) is slidably connected to the outer surface of the cylindrical plug (43) away from the slider (42).

8. The unmanned, non-intrusive livestock weighing and precise data acquisition device according to claim 7, characterized in that: A buffer spring (44) is fitted on the outer surface of the cylindrical plug (43). One end of the buffer spring (44) is fixedly connected to the slider (42), and the other end of the buffer spring (44) is fixedly connected to the damping chamber (45). A piston (46) is slidably connected to the inner wall of the damping chamber (45) near the cylindrical plug (43). An adjusting sealing plug (47) is slidably connected to the inner wall of the damping chamber (45) away from the cylindrical plug (43). A pressure oil injection hole (401) is opened between the piston (46) and the adjusting sealing plug (47) on the inner wall of the damping chamber (45). Hydraulic oil is injected between the piston (46) and the adjusting sealing plug (47) on the inner wall of the damping chamber (45).

9. The unmanned, non-intrusive livestock weighing and precise data acquisition device according to claim 8, characterized in that: The adjusting sealing plug (47) is rotatably connected to a threaded block (48) on the side away from the piston (46). A pulley (49) is threadedly connected to the outer surface of the threaded block (48). The two sides of the pulley (49) are rotatably connected to the damping chamber (45). The bottom of the weighing platform (1) is provided with a buffer groove in a nine-square grid. The damping chamber (45) is linearly fixed in each buffer groove. A pressure sensor is installed at the bottom of the buffer groove.

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