A digging type carrot harvesting device with a cutting whisk function

Abstract

The present application belongs to the technical field of agricultural machinery, and particularly relates to a digging type carrot harvesting device with a cutting function, which comprises a first frame and a second frame arranged in sequence along a digging direction, the first frame is fixedly connected with the second frame, the front end of the second frame is provided with a digging assembly, the first frame is provided with a first conveying mechanism, the second frame is provided with a second conveying mechanism, the tail end of the first conveying mechanism is located above the head end of the second conveying mechanism, the top of the second conveying mechanism is provided with a cutting mechanism, the first frame is fixedly connected with a transmission mechanism, the cutting mechanism and the second conveying mechanism are in transmission connection with the transmission mechanism, and the first conveying mechanism is in transmission connection with the second conveying mechanism. The device directly digs out carrots through the digging assembly, and then cuts off the carrot leaves, thereby avoiding the problem of the missing harvesting phenomenon of the traditional self-propelled carrot harvester through the clamping and pulling mode.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery technology, and in particular relates to a digging carrot harvesting device with a top-cutting function. Background Technology

[0002] Carrots are one of the world's top ten vegetables, widely cultivated and distributed throughout the world. Currently, most self-propelled carrot harvesters sold in domestic and international markets use a method of first loosening the soil and then harvesting carrots by pulling them up with a belt or chain clamp. This places high demands on the tensile strength of the carrot tops. When carrot tops are damaged, their tensile strength decreases, making it easy for pull-up carrot harvesters to miss some carrots. Studies have shown that when carrot tops are exposed to frost, their tensile strength drops sharply, insufficient to withstand the pulling force required to lift them up. Therefore, traditional carrot harvesters cannot effectively complete carrot harvesting operations. Thus, traditional carrot harvesters still have shortcomings and cannot achieve all-weather carrot harvesting. Summary of the Invention

[0003] The purpose of this invention is to provide a digging-type carrot harvesting device with a top-cutting function to solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] A digging carrot harvesting device with a topping-cutting function includes: a first frame and a second frame arranged sequentially along the digging direction, the first frame and the second frame being fixedly connected, a digging component being provided at the front end of the second frame, a first conveying mechanism being provided inside the second frame, a second conveying mechanism being provided inside the first frame, the tail end of the first conveying mechanism being located above the head end of the second conveying mechanism, a topping-cutting mechanism being provided above the second conveying mechanism, a transmission mechanism being fixedly connected to the first frame, the topping-cutting mechanism and the second conveying mechanism being drivenly connected to the transmission mechanism, and the first conveying mechanism being drivenly connected to the second conveying mechanism.

[0006] Preferably, the second conveying mechanism includes a first conveying roller and a second conveying roller arranged in parallel and horizontally. The first conveying roller is rotatably connected to the end of the first frame away from the second frame via a first roller shaft. The second conveying roller is rotatably connected to the end of the first frame close to the second frame via a fifth roller shaft. A conveyor belt is sleeved on the outer side of the first conveying roller and the second conveying roller, and the top surface of the conveyor belt is arranged horizontally.

[0007] Preferably, the first conveying mechanism includes a sixth roller and a seventh roller arranged horizontally and parallel to each other. The sixth roller is rotatably connected to one end of the second frame near the first frame and is located directly above the second conveying roller. The sixth roller is parallel to the second conveying roller. The seventh roller is rotatably connected to one end of the second frame away from the first frame. Both ends of the sixth roller are coaxially fixed with a first sprocket, and both ends of the seventh roller are coaxially fixed with a second sprocket. The first sprocket and the second sprocket are both located inside the second frame. The first sprocket and the second sprocket on the same side are connected by a conveying chain. A plurality of conveying bars are fixed at equal intervals between the two conveying chains. The axis of the conveying bars is parallel to the axis of the sixth roller.

[0008] Preferably, one end of the sixth roller shaft extends out of the second frame and is coaxially fixed to a third pulley, and one end of the fifth roller shaft extends out of the first frame and is coaxially fixed to a fourth pulley. The third pulley and the fourth pulley are arranged on the same side, and the third pulley and the fourth pulley are connected by a first synchronous belt drive.

[0009] Preferably, the tassel-cutting mechanism includes a horizontally arranged pressure roller, with a third roller shaft coaxially fixed to both ends of the pressure roller, and two third roller shafts respectively rotatably connected to a vertical plate, the vertical plate being fixed to opposite sides of the first frame;

[0010] The bottom end of the outer side wall of the pressure roller is in frictional contact with the top surface of the conveyor belt, and there is an angle between the axis of the pressure roller and the axis of the first conveyor roller.

[0011] A vertically arranged baffle is fixed between the two upright plates. The baffle is parallel to the axis of the pressure roller. A gap is left between the bottom end of the baffle and the top surface of the conveyor belt. A short shaft is rotatably connected to the end of the baffle away from the second frame. The short shaft is perpendicular to the baffle. A cutting blade is coaxially fixed to the short shaft. The cutting blade is close to the baffle. A fourth bevel gear is coaxially fixed to the end of the short shaft away from the baffle. The fourth bevel gear meshes with a third bevel gear. The third bevel gear is coaxially fixed to the outer wall of the third roller shaft.

[0012] The bottom end of the cutting blade is lower than the top surface of the conveyor belt, the cutting blade does not interfere with the conveyor belt, and the outer edges of the cutting blade and the conveyor belt are close to each other.

[0013] Preferably, the transmission mechanism includes a support plate fixed to the side of the upright plate away from the first frame, a fourth roller shaft rotatably connected between the support plate and the upright plate, the fourth roller shaft being arranged parallel to the third roller shaft, and one end of the fourth roller shaft passing through the upright plate and being connected to an external transmission system.

[0014] Preferably, a first pulley is coaxially fixed to the outer wall of the fourth roller shaft, and one end of the third roller shaft extends out of the vertical plate and is coaxially fixed to a second pulley. The first pulley and the second pulley are arranged on the same side, and the first pulley and the second pulley are connected by a second synchronous belt drive.

[0015] Preferably, one end of the fourth roller shaft away from the vertical plate extends through the support plate and is coaxially fixedly connected to a second bevel gear, the second bevel gear meshing with a first bevel gear, and one end of the first roller shaft extends through the first frame and is coaxially fixedly connected to the first bevel gear.

[0016] Preferably, the excavation assembly includes a shovel blade, which is fixed to the end of the second frame away from the first frame. The end of the shovel blade away from the second frame is inclined downward, and the axis of the shovel blade and the seventh roller shaft are located on the same plane.

[0017] Compared with the prior art, the present invention has the following advantages and technical effects:

[0018] In use, this invention first connects to an external power system (such as a tractor) to drive the device. During operation, the digging component extends into the ground to excavate the carrots. After being excavated, the carrots fall onto a first conveying mechanism, which then transports them to a second conveying mechanism, shaking off the soil carried on the carrots during the transport process. As the carrots move along the second conveying mechanism, the carrot tops are cut off by a top-cutting mechanism. The carrot tops also move along the second conveying mechanism, and the carrots fall to one side of the first frame under the action of the top-cutting mechanism, thus completing the harvesting of the carrots.

[0019] The device of the present invention directly digs out carrots using a digging component and then cuts off the carrot tops, avoiding the problem of missed harvesting that occurs when traditional self-propelled carrot harvesters harvest carrots by clamping and pulling them. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a top view of the present invention;

[0022] Figure 2 This is the front view of the present invention;

[0023] Figure 3This is a rear view of the present invention;

[0024] Figure 4 for Figure 1 AA section view in the middle;

[0025] The components are as follows: 1. First frame; 2. First roller shaft; 3. First bevel gear; 4. Second bevel gear; 5. First pulley; 6. Second pulley; 7. Third roller shaft; 8. Cutting blade; 9. Pressure roller; 10. Baffle; 11. Conveyor belt; 12. Fourth roller shaft; 13. Fifth roller shaft; 14. Second frame; 15. Conveyor chain; 16. Sixth roller shaft; 17. Seventh roller shaft; 18. Shovel blade; 19. Third bevel gear; 20. Fourth bevel gear; 21. Vertical plate; 22. Support plate; 23. Third pulley; 24. Conveyor bar; 25. First conveyor roller; 26. Second conveyor roller; 27. First sprocket; 28. Second sprocket; 29. ​​Fourth pulley. Detailed Implementation

[0026] 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.

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Reference Figures 1 to 4 This invention discloses a digging carrot harvesting device with a topping-cutting function, comprising: a first frame 1 and a second frame 14 arranged sequentially along the digging direction, the first frame 1 and the second frame 14 being fixedly connected, a digging component being provided at the front end of the second frame 14, a first conveying mechanism being provided inside the second frame 14, a second conveying mechanism being provided inside the first frame 1, the tail end of the first conveying mechanism being located above the head end of the second conveying mechanism, a topping-cutting mechanism being provided above the second conveying mechanism, a transmission mechanism being fixedly connected to the first frame 1, and both the topping-cutting mechanism and the second conveying mechanism being drivenly connected to the transmission mechanism, and the first conveying mechanism being drivenly connected to the second conveying mechanism.

[0029] In use, this invention first connects to an external power system (such as a tractor, not shown in the figure) to drive the device. During operation, the digging component extends into the ground to dig out the carrots. After being dug out, the carrots fall onto the first conveying mechanism, which then transports them to the second conveying mechanism, shaking off the soil carried on the carrots during the transport process. As the carrots move along the second conveying mechanism, the carrot tops are cut off by the top-cutting mechanism. The carrot tops also move along the second conveying mechanism, and the carrots fall to one side of the first frame under the action of the top-cutting mechanism, thus completing the harvesting of the carrots.

[0030] The device of the present invention directly digs out carrots using a digging component and then cuts off the carrot tops, avoiding the problem of missed harvesting that occurs when traditional self-propelled carrot harvesters harvest carrots by clamping and pulling them.

[0031] In a further optimized design, the second conveying mechanism includes a first conveying roller 25 and a second conveying roller 26 arranged in parallel and horizontally. The first conveying roller 25 is rotatably connected to the end of the first frame 1 away from the second frame 14 via a first roller shaft 2. The second conveying roller 26 is rotatably connected to the end of the first frame 1 near the second frame 14 via a fifth roller shaft 13. A conveyor belt 11 is sleeved on the outer side of the first conveying roller 25 and the second conveying roller 26, and the top surface of the conveyor belt 11 is horizontally arranged.

[0032] The rotation of the first roller shaft 2 drives the first conveyor roller 25 to rotate, which in turn drives the conveyor belt 11 to move, thereby moving the carrot.

[0033] In a further optimized design, the first conveying mechanism includes a horizontally and parallelly arranged sixth roller shaft 16 and seventh roller shaft 17. The sixth roller shaft 16 is rotatably connected to one end of the second frame 14 near the first frame 1, and is located directly above the second conveying roller 26. The sixth roller shaft 16 is parallel to the second conveying roller 26. The seventh roller shaft 17 is rotatably connected to one end of the second frame 14 away from the first frame 1. Both ends of the sixth roller shaft 16 are coaxially fixed with a first sprocket 27, and both ends of the seventh roller shaft 17 are coaxially fixed with a second sprocket 28. The first sprocket 27 and the second sprocket 28 are both located inside the second frame 14. The first sprocket 27 and the second sprocket 28 located on the same side are connected by a conveying chain 15. Several conveying bars 24 are fixed at equal intervals between the two conveying chains 15, and the axis of the conveying bars 24 is parallel to the axis of the sixth roller shaft 16.

[0034] Several finger groups are provided on the outer wall of the conveyor bar 24. These finger groups are evenly spaced along the length of the conveyor bar 24, and each finger group includes several fingers that are circumferentially and evenly fixed to the outer wall of the conveyor bar 24. The finger groups are designed to better transport carrots and prevent them from rolling off during transport.

[0035] The rotation of the sixth roller shaft 16 drives the first sprocket 27 to rotate, which in turn drives the conveyor chain 15 to move. The movement of the conveyor chain 15 drives several conveyor bars 24 to move, thereby playing the role of transporting carrots. The end of the conveyor chain 15 away from the first frame 1 is inclined downward, and a distance is left between two adjacent conveyor bars 24, so that some of the soil on the carrots can be shaken off when transporting carrots.

[0036] In a further optimized design, one end of the sixth roller shaft 16 extends out of the second frame 14 and is coaxially fixed to the third pulley 23, and one end of the fifth roller shaft 13 extends out of the first frame 1 and is coaxially fixed to the fourth pulley 29. The third pulley 23 and the fourth pulley 29 are located on the same side, and the third pulley 23 and the fourth pulley 29 are connected by a first synchronous belt drive.

[0037] The movement of the fifth roller shaft 13 drives the fourth pulley 29 to move, and the fourth pulley 29 drives the third pulley 23 to rotate through the first synchronous belt, thereby driving the conveyor chain 15 to move.

[0038] The scheme is further optimized. The tassel-cutting mechanism includes a horizontally arranged pressure roller 9. Both ends of the pressure roller 9 are coaxially fixed with a third roller shaft 7. The two third roller shafts 7 are respectively rotatably connected to a vertical plate 21. The vertical plate 21 is fixed to the opposite sides of the first frame 1.

[0039] The bottom end of the outer side wall of the pressure roller 9 is in frictional contact with the top surface of the conveyor belt 11, and there is an angle between the axis of the pressure roller 9 and the axis of the first conveyor roller 25.

[0040] A vertically arranged baffle 10 is fixed between the two upright plates 21. The baffle 10 is parallel to the axis of the pressure roller 9. A gap is left between the bottom end of the baffle 10 and the top surface of the conveyor belt 11. A short shaft is rotatably connected to the end of the baffle 10 away from the second frame 14. The short shaft is perpendicular to the baffle 10. A cutting blade 8 is coaxially fixed to the short shaft and close to the baffle 10. A fourth bevel gear 20 is coaxially fixed to the end of the short shaft away from the baffle 10. The fourth bevel gear 20 meshes with a third bevel gear 19. The third bevel gear 19 is coaxially fixed to the outer wall of the third roller shaft 7. The baffle 10 is set at a 45° angle with the first roller shaft 2. A gap of 1-2 cm is left between the baffle 10 and the pressure roller 9.

[0041] The bottom of the cutting blade 8 is lower than the top surface of the conveyor belt 11. The cutting blade 8 and the conveyor belt 11 do not interfere with each other, and the outer edges of the cutting blade 8 and the conveyor belt 11 are close to each other. There is a 3-5mm gap between the cutting blade 8 and the baffle 10.

[0042] The harvested carrots move along the conveyor belt 11. When they reach the baffle 10, the carrots are stopped by the baffle 10, while the carrot tops pass through the gap between the baffle 10 and the conveyor belt 11 and enter the space between the pressure roller 9 and the conveyor belt 11. The baffle 10 is inclined, and the carrots are subjected to the horizontal upward force of the conveyor belt 11 and the vertical resistance of the baffle 10. The tops of the carrots can only move along the baffle 10, achieving carrot alignment. This ensures that the remaining carrot tops on the carrots are of uniform length after being cut by the cutting blade 8, resulting in consistent top lengths for the harvested carrots. This reduces cutting damage to the carrots when cutting the carrot tops.

[0043] The scheme is further optimized. The transmission mechanism includes a support plate 22 fixed to the side of the upright plate 21 away from the first frame 1. A fourth roller shaft 12 is rotatably connected between the support plate 22 and the upright plate 21. The fourth roller shaft 12 is arranged parallel to the third roller shaft 7. One end of the fourth roller shaft 12 passes through the upright plate 21 and is connected to an external transmission system.

[0044] The external transmission system is existing technology and is not limited here. The external transmission system drives the fourth roller shaft 12 to move, which in turn drives the third roller shaft 7 and the first roller shaft 2 to move.

[0045] In a further optimized design, a first pulley 5 is coaxially fixed to the outer wall of the fourth roller shaft 12, and one end of the third roller shaft 7 extends out of the vertical plate 21 and is coaxially fixed to a second pulley 6. The first pulley 5 and the second pulley 6 are arranged on the same side, and the first pulley 5 and the second pulley 6 are connected by a second synchronous belt drive.

[0046] The rotation of the fourth roller shaft 12 drives the first pulley 5 to rotate, and the first pulley 5 drives the second pulley 6 to rotate through the second synchronous belt, which in turn drives the third roller shaft 7 to rotate.

[0047] In a further optimized design, the end of the fourth roller shaft 12 furthest from the vertical plate 21 extends through the support plate 22 and is coaxially fixed to a second bevel gear 4. The second bevel gear 4 meshes with a first bevel gear 3. One end of the first roller shaft 2 extends through the first frame 1 and is coaxially fixed to the first bevel gear 3. The fourth roller shaft 12 drives the second bevel gear 4, which in turn drives the first bevel gear 3 to rotate, thereby driving the first roller shaft 2 to rotate.

[0048] Further optimization of the design includes a shovel blade 18, which is fixed to the end of the second frame 14 away from the first frame 1. The end of the shovel blade 18 away from the second frame 14 is inclined downwards, and the axis of the shovel blade 18 and the seventh roller shaft 17 are on the same plane. The shovel blade 18 forms an angle of 15°-20° with the ground.

[0049] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0050] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A digging-type carrot harvesting device with a top-cutting function, characterized in that, include: A first frame (1) and a second frame (14) are arranged sequentially along the digging direction. The first frame (1) and the second frame (14) are fixedly connected. A digging component is provided at the front end of the second frame (14). A first conveying mechanism is provided inside the second frame (14). A second conveying mechanism is provided inside the first frame (1). The tail end of the first conveying mechanism is located above the head end of the second conveying mechanism. A tassel-cutting mechanism is provided above the second conveying mechanism. A transmission mechanism is fixedly connected to the first frame (1). The tassel-cutting mechanism and the second conveying mechanism are both connected to the transmission mechanism. The first conveying mechanism is connected to the second conveying mechanism. The second conveying mechanism includes a first conveying roller (25) and a second conveying roller (26) arranged in parallel and horizontally. The first conveying roller (25) is rotatably connected to the end of the first frame (1) away from the second frame (14) via a first roller shaft (2). The second conveying roller (26) is rotatably connected to the end of the first frame (1) near the second frame (14) via a fifth roller shaft (13). A conveyor belt (11) is sleeved on the outer side of the first conveying roller (25) and the second conveying roller (26). The top surface of the conveyor belt (11) is arranged horizontally. The tassel-cutting mechanism includes a horizontally arranged pressure roller (9), and both ends of the pressure roller (9) are coaxially fixed with a third roller shaft (7). The two third roller shafts (7) are respectively rotatably connected to a vertical plate (21), and the vertical plate (21) is fixed on opposite sides of the first frame (1). The bottom end of the outer wall of the pressure roller (9) is in frictional contact with the top surface of the conveyor belt (11), and there is an angle between the axis of the pressure roller (9) and the axis of the first conveyor roller (25). A vertically arranged baffle (10) is fixed between the two upright plates (21). The baffle (10) is parallel to the axis of the pressure roller (9). A gap is left between the bottom end of the baffle (10) and the top surface of the conveyor belt (11). A short shaft is rotatably connected to the end of the baffle (10) away from the second frame (14). The short shaft is perpendicular to the baffle (10). A cutting blade (8) is coaxially fixed on the short shaft. The cutting blade (8) is close to the baffle (10). A fourth bevel gear (20) is coaxially fixed to the end of the short shaft away from the baffle (10). The fourth bevel gear (20) meshes with a third bevel gear (19). The third bevel gear (19) is coaxially fixed to the outer wall of the third roller shaft (7). The bottom end of the cutting blade (8) is lower than the top surface of the conveyor belt (11), the cutting blade (8) does not interfere with the conveyor belt (11), and the outer edges of the cutting blade (8) and the conveyor belt (11) are close to each other.

2. The digging-type carrot harvesting device with top-cutting function according to claim 1, characterized in that: The first conveying mechanism includes a sixth roller shaft (16) and a seventh roller shaft (17) arranged horizontally and parallel to each other. The sixth roller shaft (16) is rotatably connected to one end of the second frame (14) near the first frame (1), and is located directly above the second conveying roller (26). The sixth roller shaft (16) is parallel to the second conveying roller (26). The seventh roller shaft (17) is rotatably connected to one end of the second frame (14) away from the first frame (1). The two sides of the sixth roller shaft (16) are... Both ends of the seventh roller shaft (17) are coaxially fixed with a first sprocket (27), and both ends of the seventh roller shaft (17) are coaxially fixed with a second sprocket (28). The first sprocket (27) and the second sprocket (28) are both located in the second frame (14). The first sprocket (27) and the second sprocket (28) located on the same side are connected by a conveyor chain (15). A number of conveyor bars (24) are fixed at equal intervals between the two conveyor chains (15). The axis of the conveyor bar (24) is parallel to the axis of the sixth roller shaft (16).

3. A digging-type carrot harvesting device with a top-cutting function according to claim 2, characterized in that: One end of the sixth roller shaft (16) extends out of the second frame (14) and is coaxially fixed to the third pulley (23). One end of the fifth roller shaft (13) extends out of the first frame (1) and is coaxially fixed to the fourth pulley (29). The third pulley (23) and the fourth pulley (29) are arranged on the same side. The third pulley (23) and the fourth pulley (29) are connected by a first synchronous belt drive.

4. A digging-type carrot harvesting device with a top-cutting function according to claim 1, characterized in that: The transmission mechanism includes a support plate (22) fixed to the side of the upright plate (21) away from the first frame (1). A fourth roller shaft (12) is rotatably connected between the support plate (22) and the upright plate (21). The fourth roller shaft (12) is arranged parallel to the third roller shaft (7). One end of the fourth roller shaft (12) extends out of the upright plate (21) and is connected to an external transmission system.

5. A digging-type carrot harvesting device with a top-cutting function according to claim 4, characterized in that: The fourth roller shaft (12) has a first pulley (5) coaxially fixed to its outer side wall. One end of the third roller shaft (7) passes through the vertical plate (21) and is coaxially fixed to a second pulley (6). The first pulley (5) and the second pulley (6) are arranged on the same side. The first pulley (5) and the second pulley (6) are connected by a second synchronous belt drive.

6. A digging-type carrot harvesting device with a top-cutting function according to claim 4, characterized in that: The fourth roller shaft (12) extends out of the support plate (22) at one end away from the vertical plate (21) and is coaxially fixed to the second bevel gear (4). The second bevel gear (4) meshes with the first bevel gear (3). One end of the first roller shaft (2) extends out of the first frame (1) and is coaxially fixed to the first bevel gear (3).

7. A digging-type carrot harvesting device with a top-cutting function according to claim 2, characterized in that: The excavation assembly includes a shovel (18), which is fixed to one end of the second frame (14) away from the first frame (1). The end of the shovel (18) away from the second frame (14) is inclined downward. The shovel (18) and the axis of the seventh roller (17) are located on the same plane.

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