A low-damage forage harvesting device

Abstract

The present application relates to the technical field of forage harvesting, in particular to a low-damage forage harvesting device, comprising a support frame and walking wheels installed below the support frame, and the support frame is connected to a tractor outside through a connecting rod installed at the rear end; the upper inner side of the support frame is connected to an outer shell through a lifting control mechanism, and the inner side of the front of the outer shell is sequentially installed with a harvesting blade and a fixed plate from bottom to top. When the pushing plate revolves around the center of the rotating rod, the pushing plate can apply a backward pushing force to the forage below, thereby quickly pushing the harvested forage onto the conveyor belt, avoiding the forage from being piled up and causing pulling damage, reducing physical damage to the forage stems and leaves, maintaining the highest nutritional value and dry matter yield of the forage, and avoiding the forage from being piled up and causing blockage, thereby improving the efficiency of forage harvesting, collection and discharge.

Description

Technical Field

[0001] This invention relates to the field of forage harvesting technology, specifically to a forage harvesting device with low damage. Background Technology

[0002] Harvesting devices are needed in grasslands to cut and harvest forage so that fresh forage can be processed into hay products later. Modern harvesting devices integrate intelligent technology, enabling them to operate autonomously. Therefore, harvesting devices belong to intelligent agricultural power machinery and also to the intelligent manufacturing equipment industry, playing an important role in agriculture and animal husbandry. For example, the patent disclosed in the prior art with publication number "CN114258777B" is entitled "An Integrated Grass Cutting and Rake for Harvesting". It discloses that the electric telescopic rod is first activated, pushing the second rack until it meshes with the second gear. The electric telescopic rod continues to extend, pushing the movable pusher until all the cutting blades extend from the third hole. Then the device enters the working state, the motor starts reversing, driving the trolley to move back and forth in the fixed housing, thereby driving the cutting mechanism below. Since the second rack is fixed, the second gear rotates reversibly as the moving housing moves left and right with the trolley. Due to the pulley mechanism, all the cutting blades rotate simultaneously, achieving grass cutting during the left and right movement. Another example is the prior art with publication number "CN1..." The patent disclosed in patent number 17598093B is entitled "Unmanned Device for Harvesting and Collecting Forage". It discloses a frame, a walking mechanism, a controller, a power battery, a harvesting mechanism, a collection mechanism, and an image collection mechanism. The frame has a cavity inside, which extends through the front end of the frame. The walking mechanism is located at the bottom of the frame and is used to drive the frame to move. The harvesting mechanism is located at the front end of the frame and is used to harvest forage and push the harvested forage into the cavity. The collection mechanism is located on the side wall of the harvesting mechanism and is used to collect whole forage. The image collection mechanism is located at the top of the frame and is used to collect image information of forage in front of the frame. The controller is located on the frame and is used to control the walking mechanism, the harvesting mechanism, the collection mechanism, and the image collection mechanism. The power battery is located inside the frame and is used to provide electrical energy.

[0003] In the aforementioned prior art forage harvesting devices, the forage is harvested by rotating the harvesting blades within the harvesting mechanism. As the vehicle frame advances, the forage is pushed into the chamber. Over time, this causes the harvested forage to accumulate, waiting to be pushed into the chamber again by the advancing vehicle frame. This not only makes the accumulated forage prone to tearing damage but also causes blockages, thus affecting subsequent forage harvesting, collection, and discharge operations. Therefore, we propose a low-damage forage harvesting device to solve the aforementioned problems. Summary of the Invention

[0004] The purpose of this invention is to provide a low-damage forage harvesting device to solve the problems mentioned in the background art. In existing forage harvesting devices, the forage is harvested by rotating the harvesting blades in the harvesting mechanism. As the vehicle frame is continuously pushed forward, the forage is pushed into the chamber. Over time, the harvested forage accumulates together, waiting to be pushed into the chamber by the continuous advancement of the vehicle frame. This not only makes the accumulated forage prone to tearing damage, but also causes blockages, which in turn affects the subsequent harvesting, collection, and discharge of forage.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a low-damage forage harvesting device, comprising a support frame and wheels mounted below it, wherein the support frame is connected to an external tractor via a connecting rod mounted at the rear end, the upper inner side of the support frame is connected to an outer shell via a lifting control mechanism, and harvesting blades and a fixing plate are sequentially installed from bottom to top on the front inner side of the outer shell, and a conveyor belt is installed on the rear inner side of the fixing plate, a guide plate is installed inside the rear of the outer shell, a rotating rod is installed inside the outer shell above the conveyor belt, and an auxiliary roller is fixed to the outer side of the rotating rod, and a push plate for controlling the tipping of forage is connected to a groove opened inside the auxiliary roller, a camera is installed on the top of the outer shell, a buffer plate is installed on the inner side of the outer shell, and a laser rangefinder is fixed to the bottom surface of the buffer plate.

[0006] Preferably, a control rod is installed inside the walking wheel, and both ends of the control rod are rotatably connected to the lower interior of the support frame, and a control column is fixed to the outside of the control rod.

[0007] Preferably, a row of lifting rods is fixed to the front end of the fixing plate, and both the fixing plate and the lifting rods are inclined.

[0008] Preferably, a crossbar is fixed through the front end of the guide plate, and a spiral spring is nested on the outer side of one end of the crossbar. The guide plate is located behind the conveyor belt, and both the conveyor belt and the guide plate are inclined. The conveyor belt and the guide plate together form an inverted "V" shape structure.

[0009] Preferably, a guide plate is provided above the fixed plate, and the guide plate forms a reciprocating rotating structure through the lifting rod.

[0010] Preferably, the inner walls of both the left and right sides of the outer casing are fitted with semi-circular fixing blocks.

[0011] Preferably, the push plate is arranged in a "7" shape, a vertical rod is fixed in the groove opened inside the auxiliary roller, and the outer side of the vertical rod penetrates the horizontal plane of the push plate. Moreover, an arc-shaped plate is fixed at the outer end of the vertical plane of the push plate, and the arc-shaped plate is in concave-convex fit with the groove opened inside the auxiliary roller. A return spring is nested and connected to the outer side of the vertical rod. Both the left and right ends of the horizontal plane of the push plate are fixed with protruding rods, and the two protruding rods respectively penetrate the grooves opened on the left and right sides of the auxiliary roller.

[0012] Preferably, the convex rod forms a sliding structure with the auxiliary roller through the fixed block. The conveyor belt is equipped with a conveyor roller. Both ends of the conveyor roller are rotatably mounted to the outer shell. The right end of the conveyor roller passes through the right side of the outer shell. The right end of the rotating rod passes through the right side of the outer shell. Two transmission rods are installed on the right side of the outer shell. Transmission gears are installed on the outer sides of the right ends of the transmission rods, the conveyor rollers, and the rotating rods. A gear protection frame for shielding and protecting the transmission gears is installed on the right side of the outer shell.

[0013] Preferably, a first threaded rod is installed in the slot on the upper part of the outer shell, and a first baffle is threaded to the outer side of the first threaded rod. A first protective cloth is fixed through the lower outer side of the first baffle. The first protective cloth is sealed to the slot opened in the upper part of the outer shell, and the rear side of the first baffle is in contact with the front side of the camera.

[0014] Preferably, the bottom surface of the buffer plate is grooved and a second threaded rod is installed, and a movable block is threadedly connected to the outer side of the second threaded rod. A second protective cloth is sealed and connected in the groove on the bottom surface of the buffer plate. The lower end of the movable block passes through the interior of the second protective cloth and is connected to the second baffle. The upper part of the second baffle is in close contact with the bottom surface of the laser rangefinder. A chain protective frame is fixed on the left side of the outer shell. The left ends of the second threaded rod and the first threaded rod are both inserted into the chain protective frame. The outer sides of the left ends of the second threaded rod and the first threaded rod are connected by a sprocket assembly located in the chain protective frame. Both the second protective cloth and the first protective cloth are made of umbrella fabric.

[0015] Compared with the prior art, the beneficial effects of this invention are: this low-damage forage harvesting device facilitates the rapid and easy pushing of harvested forage onto the conveyor belt, thereby preventing the forage from piling up and causing pulling damage. It reduces physical damage to the forage stems and leaves, thus maintaining the highest nutritional value and dry matter yield of the forage. It also prevents the forage from piling up and causing blockages, thereby improving the efficiency of forage harvesting, collection, and discharge. The specific details are as follows: (1) When the push plate revolves around the center of the rotating rod, the push plate can apply a backward pushing force to the grass below, which makes it easy to quickly push the harvested grass onto the conveyor belt, thereby avoiding the grass from piling up together and causing pulling damage. This can reduce physical damage to the grass stems and leaves, so as to maintain the highest nutritional value and dry matter yield of the grass. It can also avoid the grass from piling up together and causing blockage, thereby improving the efficiency of harvesting, collecting and discharging grass. Furthermore, the inclined lifting rods allow for the gentle lifting and guiding of the downward-hanging leaves around the forage to the cutting area before cutting, preventing the leaves from being cut off and falling to the ground during cutting. This avoids leaf detachment, improves the leaf attachment integrity rate, and enhances the nutrient retention rate of the forage.

[0016] (2) By gently flattening the grass on the conveyor belt with auxiliary rollers, the loss of grass can be reduced by falling off the conveyor belt, which makes it easier for the conveyor belt to collect and discharge the grass. At the same time, the inclined guide plate can reduce the discharge height and minimize the distance of grass falling from the harvesting device to the ground, so that the grass can be laid on the ground with a low drop, which can further avoid grass damage. The control rod drives the control column to rotate, which in turn applies an upward thrust to the guide plate intermittently. This causes the guide plate to oscillate back and forth intermittently, which allows the hay to be formed into fluffy strips and laid on the ground, facilitating natural ventilation and drying of the hay. (3) The image of the forage can be obtained through the camera, and then the maturity of the forage can be judged by image recognition technology and image processing technology. Thus, the height of the harvesting blade from the ground can be intelligently controlled according to the maturity of the forage, so as to adjust the height of the harvesting blade according to the required cutting height of the forage. This can avoid harvesting too low and damaging the regenerated buds, and avoid affecting the growth of the next crop. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention from a bottom view; Figure 4 This is a schematic cross-sectional view of the left side of the outer casing of the present invention; Figure 5 This is a schematic diagram of the right-side structure of the outer casing of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the conveyor belt of the present invention; Figure 7 This is a three-dimensional structural diagram of the rotating rod of the present invention; Figure 8This is a schematic cross-sectional view of the auxiliary roller structure of the present invention; Figure 9 This is a schematic diagram of the contact structure between the convex rod and the fixed block after the auxiliary roller rotates according to the present invention; Figure 10 This is a bottom view of the buffer plate structure of the present invention; Figure 11 This is a partial cross-sectional view of the buffer plate of the present invention; Figure 12 This is a cross-sectional view of the connection between the outer shell and the first baffle of the present invention.

[0018] In the diagram: 1. Support frame; 2. Traveling wheel; 201. Control rod; 202. Control column; 3. Connecting rod; 4. Lifting control mechanism; 5. Outer shell; 6. Conveyor belt; 61. Conveying roller; 7. Fixed plate; 71. Lifting rod; 8. Harvesting blade; 9. Rotating rod; 10. Transmission rod; 11. Auxiliary roller; 111. Vertical rod; 112. Return spring; 113. Push plate; 114. Protruding rod; 115. Arc plate; 12. Fixed block; 13. Gear protective frame; 14. Chain protective frame; 15. Buffer plate; 16. Camera; 17. First baffle; 171. First protective cloth; 18. First threaded rod; 19. Laser rangefinder; 20. Second baffle; 21. Moving block; 211. Second protective cloth; 22. Second threaded rod; 23. Crossbar; 231. Spiral spring; 24. Guide plate. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-12 The present invention provides the following technical solution: Example 1: The low-damage forage harvesting device in this example facilitates the rapid and efficient pushing of harvested forage onto conveyor belt 6, thus preventing the forage from piling up and causing pulling damage. This reduces physical damage to the forage stems and leaves, preserving the highest nutritional value and dry matter yield. It also prevents clogs caused by forage accumulation, thereby improving the efficiency of forage harvesting, collection, and discharge operations. For the specific structure, please refer to the attached diagram. Figures 1-9As shown, a support frame 1 and a traveling wheel 2 installed below it are included. The support frame 1 is connected to an external tractor via a connecting rod 3 installed at the rear end. The upper inner side of the support frame 1 is connected to the outer shell 5 via a lifting control mechanism 4. Harvesting blades 8 and a fixing plate 7 are installed sequentially from bottom to top on the front inner side of the outer shell 5. A conveyor belt 6 is installed on the rear inner side of the fixing plate 7. A guide plate 24 is installed inside the rear of the outer shell 5. A rotating rod 9 is installed inside the outer shell 5 above the conveyor belt 6. An auxiliary roller 11 is fixed to the outside of the rotating rod 9. A push plate 113 for controlling the tipping of hay is connected to a groove inside the auxiliary roller 11. A camera 16 is installed on the top of the outer shell 5. A buffer plate 15 is installed on the inner side of the outer shell 5. A laser rangefinder 19 is fixed to the bottom surface of the housing 5. A row of lifting rods 71 ​​is fixed to the front end of the fixing plate 7. Both the fixing plate 7 and the lifting rods 71 ​​are inclined. The inner walls of the left and right sides of the housing 5 are equipped with semi-circular fixing blocks 12. The push plate 113 is arranged in the shape of a "7". A vertical rod 111 is fixed in the groove opened inside the auxiliary roller 11. The outer side of the vertical rod 111 passes through the horizontal plane of the push plate 113. An arc plate 115 is fixed to the outer end of the vertical plane of the push plate 113. The arc plate 115 is in concave-convex fit with the groove opened inside the auxiliary roller 11. A return spring 112 is nested and connected to the outer side of the vertical rod 111. The left and right ends of the horizontal plane of the push plate 113 are fixed with protruding rods 114. The two protruding rods 114 pass through the grooves opened on the left and right sides of the auxiliary roller 11 respectively.

[0021] The protruding rod 114 forms a sliding structure with the auxiliary roller 11 through the fixing block 12. The conveyor belt 6 is equipped with a conveyor roller 61. Both ends of the conveyor roller 61 are rotatably mounted with the outer shell 5. The right end of the conveyor roller 61 passes through the right side of the outer shell 5. The right end of the rotating rod 9 passes through the right side of the outer shell 5. Two transmission rods 10 are installed on the right side of the outer shell 5. Transmission gears are installed on the outer sides of the right ends of the transmission rods 10, the conveyor roller 61, and the rotating rod 9. A gear protection frame 13 is installed on the right side of the outer shell 5 to shield and protect the transmission gears.

[0022] Connect the rear end of connecting rod 3 to an external tractor, and then move the entire harvesting device by driving the tractor. At this time, the inclined lifting rod 71 at the front end of the fixed plate 7 first contacts the forage. The forage is between two adjacent lifting rods 71, and the diameter of the forage stalk is smaller than the distance between the two adjacent lifting rods 71. When the lifting rod 71 moves forward, because the height of the front end of the lifting rod 71 is lower than the height of the rear end of the lifting rod 71, the lifting rod 71 can gently lift and guide the downward-hanging leaves around the forage to the cutting area before cutting, avoiding cutting the leaves and causing them to fall to the ground during cutting. Therefore, it can avoid the leaves falling off and improve the efficiency of leaf harvesting. To improve the integrity of forage attachment and enhance nutrient retention, the harvesting blade 8 cuts the forage. Simultaneously, the right end of the conveying roller 61 is connected to an external motor via a coupling. The motor drives the conveying roller 61 to rotate. The outer sides of the conveying roller 61, the two transmission rods 10, and the rotating rod 9 are all equipped with meshing transmission gears, causing the conveying roller 61 and the rotating rod 9 to rotate synchronously in opposite directions. The conveying roller 61 rotates clockwise, while the rotating rod 9 drives the auxiliary roller 11 to rotate counterclockwise. When the auxiliary roller 11 rotates to the point where the protrusions 114 at both ends contact the outer side of the fixing block 12, the semi-circular fixing block 12 applies an outward pushing force to the protrusions 114, causing... The protruding rod 114 drives the push plate 113 and the arc plate 115 to move outward. The push plate 113 slides on the outside of the vertical rod 111, and the return spring 112 stores energy. Therefore, when the push plate 113 revolves around the center of the rotating rod 9 after moving outward, it can apply a backward pushing force to the hay below. This facilitates the quick pushing of the harvested hay onto the conveyor belt 6, thus preventing the hay from piling up and causing pulling damage. It can reduce physical damage to the hay stems and leaves, maintain the highest nutritional value and dry matter yield of the hay, and prevent the hay from piling up and causing blockages. This also facilitates the harvesting, collection, and discharge of hay. To improve efficiency, when the convex rod 114 rotates to separate from the fixed block 12, the stored force of the return spring 112 drives the push plate 113 and the arc plate 115 into the auxiliary roller 11. At this time, the auxiliary roller 11 gently flattens the hay on the conveyor belt 6, which can reduce the loss of hay falling off the conveyor belt 6 and facilitate the collection and discharge of hay by the conveyor belt 6. Then the conveyor belt 6 transports the hay to the guide plate 24. The inclined guide plate 24 transports the hay, which can reduce the discharge height and minimize the falling distance of the hay from the harvesting device to the ground, so that the hay is laid on the ground with a low drop, which can further avoid damage to the hay.

[0023] Example 2: The low-damage forage harvesting device in this example, based on Example 1, allows for intermittent reciprocating shaking of the guide plate 24, which enables the forage to be laid out in loose strips on the ground, facilitating natural ventilation and drying. See attached diagram for the specific structure. Figures 3-4 As shown, a control rod 201 is installed inside the walking wheel 2, and both ends of the control rod 201 are rotatably connected to the lower interior of the support frame 1. A control column 202 is fixed to the outside of the control rod 201. A crossbar 23 is fixed to the front end of the guide plate 24, and a spiral spring 231 is nested on the outside of one end of the crossbar 23. The guide plate 24 is located behind the conveyor belt 6. Both the conveyor belt 6 and the guide plate 24 are inclined. The conveyor belt 6 and the guide plate 24 together form an inverted "V" shape. The guide plate 24 is set above the fixed plate 7, and the guide plate 24 forms a reciprocating rotating structure through the lifting rod 71.

[0024] When the conveyor belt 6 transports the hay onto the guide plate 24, the traveling wheel 2 drives the control lever 201 to rotate. When the control lever 201 rotates, it drives the control column 202 to rotate. When the control column 202 rotates to contact the bottom surface of the guide plate 24, the control column 202 applies an upward thrust to the guide plate 24. At this time, the guide plate 24 rotates around the crossbar 23 as the center, and the spiral spring 231 stores energy. When the control column 202 rotates to separate from the bottom surface of the guide plate 24, the stored energy of the spiral spring 231 drives the crossbar 23 and the guide plate 24 to rotate in the opposite direction and reset. At this time, the bottom surface of the guide plate 24 contacts the rubber buffer pad above the buffer plate 15, thus causing the guide plate 24 to intermittently reciprocate, which allows the hay to form fluffy strips and be laid on the ground.

[0025] Example 3: The low-damage forage harvesting device in this example, based on Example 1, can shield and protect the camera 16 and laser rangefinder 19 during forage harvesting, preventing debris and impurities generated during forage harvesting from adhering to the camera 16 and laser rangefinder 19, thereby avoiding affecting the use of the camera 16 and laser rangefinder 19. For the specific structure, please refer to the attached diagram. Figures 10-12As shown, a first threaded rod 18 is installed in a slot on the upper part of the outer casing 5, and a first baffle 17 is threadedly connected to the outer side of the first threaded rod 18. A first protective cloth 171 is fixedly fixed through the lower outer side of the first baffle 17. The first protective cloth 171 is sealed to the slot opened in the upper part of the outer casing 5. The rear side of the first baffle 17 is in close contact with the front side of the camera 16. A second threaded rod 22 is installed in a slot on the bottom surface of the buffer plate 15, and a moving block 21 is threadedly connected to the outer side of the second threaded rod 22. A first threaded rod 22 is sealed to the slot opened in the bottom surface of the buffer plate 15. The second protective cloth 211 is connected to the second baffle 20 after the lower end of the moving block 21 passes through the interior of the second protective cloth 211. The upper part of the second baffle 20 is in contact with the bottom surface of the laser rangefinder 19. A chain protective frame 14 is fixed on the left side of the outer shell 5. The left ends of the second threaded rod 22 and the first threaded rod 18 are inserted into the chain protective frame 14. The outer sides of the left ends of the second threaded rod 22 and the first threaded rod 18 are connected by a sprocket assembly located in the chain protective frame 14. The second protective cloth 211 and the first protective cloth 171 are both made of umbrella cloth.

[0026] When the height of the harvesting blade 8 needs to be adjusted according to the required cutting height of the forage, the second threaded rod 22 is manually rotated. As the second threaded rod 22 rotates, it drives the first threaded rod 18 to rotate along with it via the sprocket assembly inside the chain guard frame 14. The rotation of the second threaded rod 22 causes the outer threaded connecting moving block 21 to slide within the groove on the bottom surface of the buffer plate 15, allowing the moving block 21 to drive the second baffle 20 to move stably outwards. At this time, the second baffle 20 does not obstruct the laser rangefinder 19, and the second protective cloth 211 is pulled. The second protective cloth 211 can shield the second threaded rod 22, preventing it from being exposed to external impurities. Similarly, when the first threaded rod 18 rotates, it drives the first baffle 17 connected to the outer thread to move within the groove on the upper surface of the outer shell 5, so that the first baffle 17 does not block the camera 16. At this time, the first protective cloth 171 is pulled, which shields the first threaded rod 18, preventing it from being exposed to external impurities. Then, the camera 16 acquires an image of the forage, and then the image recognition and image processing technologies in the harvesting device determine the maturity of the forage. The image recognition and image processing technologies then transmit this signal to the microcontroller, which controls the start of the lifting control mechanism 4. The lifting control mechanism 4 controls the lifting of the outer shell 5. The laser rangefinder 19 detects the distance between the laser rangefinder and the ground, thereby intelligently controlling the height of the harvesting blade 8 from the ground according to the maturity of the forage. This allows for adjustment of the height of the harvesting blade 8 according to the required cutting height of the forage, thus avoiding harvesting too low and damaging regeneration. To prevent the buds from affecting the growth of the next crop, the lifting control mechanism 4 can be an electric push rod. Since the lifting control mechanism 4 is existing technology, it will not be described in detail here. After the height of the harvesting blade 8 is adjusted, the second threaded rod 22 is rotated in the opposite direction as shown above, so that the second baffle 20 blocks the laser rangefinder 19 and the first baffle 17 blocks the camera 16, so as to prevent the debris and impurities generated during the harvesting of forage from sticking to the camera 16 and the laser rangefinder 19, thereby avoiding affecting the use of the camera 16 and the laser rangefinder 19.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-damage forage harvesting device, comprising a support frame (1) and wheels (2) mounted thereunder, wherein the support frame (1) is connected to an external tractor via a connecting rod (3) mounted at the rear end, characterized in that: The upper inner side of the support frame (1) is connected to the outer shell (5) through the lifting control mechanism (4). Harvesting blades (8) and fixing plates (7) are installed sequentially from bottom to top on the front inner side of the outer shell (5). A conveyor belt (6) is installed on the rear inner side of the fixing plate (7). A guide plate (24) is installed inside the rear of the outer shell (5). A rotating rod (9) is installed inside the outer shell (5) above the conveyor belt (6). An auxiliary roller (11) is fixed on the outside of the rotating rod (9). A push plate (113) for controlling the tipping of hay is connected in the groove opened inside the auxiliary roller (11). A camera (16) is installed on the upper side of the outer shell (5). A buffer plate (15) is installed on the inner side of the outer shell (5). A laser rangefinder (19) is fixed on the bottom surface of the buffer plate (15).

2. The forage harvesting device with low damage according to claim 1, characterized in that: The walking wheel (2) is equipped with a control rod (201), and the two ends of the control rod (201) are rotatably connected to the lower interior of the support frame (1), and a control column (202) is fixed on the outside of the control rod (201).

3. The forage harvesting device with low damage according to claim 1, characterized in that: The front end of the fixing plate (7) is fixed with a row of lifting rods (71), and both the fixing plate (7) and the lifting rods (71) are inclined.

4. The forage harvesting device with low damage according to claim 3, characterized in that: A crossbar (23) is fixed through the front end of the guide plate (24), and a spiral spring (231) is nested on the outer side of one end of the crossbar (23). The guide plate (24) is located behind the conveyor belt (6). Both the conveyor belt (6) and the guide plate (24) are inclined. The conveyor belt (6) and the guide plate (24) together form an inverted "V" shape.

5. The forage harvesting device with low damage according to claim 4, characterized in that: A guide plate (24) is provided above the fixed plate (7), and the guide plate (24) forms a reciprocating rotating structure through the lifting rod (71).

6. The forage harvesting device with low damage according to claim 1, characterized in that: The inner walls of the left and right sides of the outer shell (5) are each fitted with a semi-circular fixing block (12).

7. The forage harvesting device with low damage according to claim 6, characterized in that: The push plate (113) is arranged in the shape of a "7". A vertical rod (111) is fixed in the groove opened inside the auxiliary roller (11). The outer side of the vertical rod (111) penetrates the horizontal plane of the push plate (113). An arc plate (115) is fixed at the outer end of the vertical plane of the push plate (113). The arc plate (115) and the groove opened inside the auxiliary roller (11) are in concave-convex fit. A reset spring (112) is nested and connected to the outer side of the vertical rod (111). Both the left and right ends of the horizontal plane of the push plate (113) are fixed with protruding rods (114). The two protruding rods (114) penetrate the grooves opened on the left and right sides of the auxiliary roller (11) respectively.

8. The forage harvesting device with low damage according to claim 7, characterized in that: The protruding rod (114) forms a sliding structure with the auxiliary roller (11) through the fixing block (12). The conveyor belt (6) is equipped with a conveyor roller (61). The left and right ends of the conveyor roller (61) are rotatably installed with the outer shell (5). The right end of the conveyor roller (61) penetrates the right side of the outer shell (5). The right end of the rotating rod (9) penetrates the right side of the outer shell (5). Two transmission rods (10) are installed on the right side of the outer shell (5). Transmission gears are installed on the outer side of the right end of the transmission rod (10), the conveyor roller (61) and the rotating rod (9). A gear protection frame (13) for shielding and protecting the transmission gears is installed on the right side of the outer shell (5).

9. A low-damage forage harvesting device according to claim 1, characterized in that: The upper interior of the outer shell (5) is slotted and a first threaded rod (18) is installed. The outer side of the first threaded rod (18) is threadedly connected to a first baffle (17). The lower outer side of the first baffle (17) is fixed with a first protective cloth (171). The first protective cloth (171) is sealed to the slot opened in the upper interior of the outer shell (5). The rear side of the first baffle (17) is in contact with the front side of the camera (16).

10. A forage harvesting device with low damage according to claim 1, characterized in that: The bottom surface of the buffer plate (15) is slotted and a second threaded rod (22) is installed. The outer side of the second threaded rod (22) is threadedly connected to a moving block (21). The groove on the bottom surface of the buffer plate (15) is sealed and connected to a second protective cloth (211). The lower end of the moving block (21) passes through the interior of the second protective cloth (211) and is connected to the second baffle (20). The upper part of the second baffle (20) is in close contact with the bottom surface of the laser rangefinder (19). The left side of the outer shell (5) is fixed with a chain protection frame (14). The left ends of the second threaded rod (22) and the first threaded rod (18) are inserted into the chain protection frame (14). The outer sides of the left ends of the second threaded rod (22) and the first threaded rod (18) are connected by a sprocket assembly located in the chain protection frame (14). The second protective cloth (211) and the first protective cloth (171) are both made of umbrella cloth.

Images