A sweet potato leaf turning device

Abstract

This utility model belongs to the field of agricultural production equipment technology, specifically relating to a sweet potato leaf-turning device. It includes a trolley with multiple separating blocks spaced apart at the front end. Support blocks are located on the upper sides of the separating blocks, and a rotating shaft passes through each support block. A first impeller and a second impeller extend from both ends of the rotating shaft and are fixed thereon. Multiple first leaf-turning rods are circumferentially arranged on the first impeller, and multiple second leaf-turning rods are circumferentially arranged on the second impeller. The length of the first leaf-turning rods is greater than the length of the second leaf-turning rods and they are staggered. Leaf-turning rollers are rotatably fitted onto both the first and second leaf-turning rods. A first driving component is provided on the trolley to drive the rotating shaft to rotate. This utility model uses the separating blocks to lift the sweet potato stems and leaves between two ridges upwards and to both sides. The rotating first and second leaf-turning rods then continue to lift and further turn the leaves to both sides, effectively and quickly completing the sweet potato leaf-turning work.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural production equipment technology, specifically relating to a sweet potato leaf turning device. Background Technology

[0002] Sweet potatoes are characterized by high and stable yields, drought resistance, tolerance to poor soil, wide adaptability, and multiple uses. They are not only an important food crop but also an important economic crop.

[0003] Turning leaves is a key agronomic measure in sweet potato cultivation, and its importance is mainly reflected in: 1. Control vine growth: Turning over the leaves can break the apical dominance of the vines, inhibit their excessive growth, and allow more nutrients to flow to the tubers.

[0004] 2. Promote tuber development: Proper leaf turning can prevent the formation of adventitious roots, coordinate growth balance, and significantly improve sweet potato yield and quality.

[0005] Currently, the level of mechanization in sweet potato cultivation is continuously improving. From land preparation, ridging, fertilization, mulching, transplanting to harvesting, various stages have achieved different degrees of mechanization, greatly improving production efficiency and reducing labor costs. However, leaf turning still relies on manual labor. Sweet potatoes are planted on the ridges of the field. As the stems and leaves grow, they spread and grow in the furrows between two adjacent ridges. Turning the leaves involves lifting and turning the stems and leaves to break off the adventitious or secondary roots that are produced, and to make the front and back of the leaves alternately contact the ground. This usually needs to be done every 10-15 days. Turning the leaves of sweet potatoes not only requires continuous bending over, but also needs to be done many times during the growth of sweet potatoes, resulting in high labor intensity and low efficiency. Summary of the Invention

[0006] This invention addresses the problem that the leaf-turning work in existing sweet potato cultivation relies on manual labor, which requires multiple turnings and frequent bending over, resulting in high labor intensity and low efficiency. The invention provides a sweet potato leaf-turning device that uses a separating block to lift the sweet potato stems and leaves between two ridges upwards and to the sides. Simultaneously, multiple rotating first leaf-turning rods with turning rollers lift them upwards, and then second leaf-turning rods with turning rollers continue to lift them while further turning them to the sides, effectively and quickly completing the sweet potato leaf-turning work.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: A sweet potato leaf-turning device includes a trolley with multiple leaf-turning mechanisms spaced apart at its front end. Each leaf-turning mechanism includes a first separating component and a second separating component. The first separating component includes a separating block with a conical front end. The second separating component includes a first impeller and a second impeller. A support block is fixedly mounted on the upper side of the separating block. A rotating shaft passes through the support block and extends from both ends of the rotating shaft, coaxially connecting the first impeller and the second impeller. Multiple first leaf-turning rods are evenly distributed circumferentially on the first impeller. The second impeller is circumferentially evenly provided with multiple second leaf-turning rods. The first leaf-turning rod and the second leaf-turning rod are staggered. The length of the first leaf-turning rod is greater than that of the second leaf-turning rod. Both the first leaf-turning rod and the second leaf-turning rod are rotatably fitted with leaf-turning rollers. The trolley is provided with a first driving component, which is used to drive the rotating shaft to rotate. By moving the separating block, the sweet potato stems and leaves in the furrows between the ridges are lifted upwards and to the sides, so that they are picked up by the rotating first leaf-turning rod, and then lifted upwards and to the sides by the second leaf-turning rod to achieve the leaf-turning operation.

[0008] Preferably, the first driving component includes a motor and a rotating rod. The motor is fixedly mounted on the trolley and the rotating rod is rotatably mounted on it. The output end of the motor is connected to the rotating rod via a transmission connection. The rotating rod is connected to multiple rotating shafts via a chain transmission connection. The motor drives the rotating rod to rotate, thereby driving the multiple rotating shafts to rotate.

[0009] Preferably, the longitudinal section of the separating block is a right-angled trapezoid, which ensures that the stems and leaves separate to both sides when lifted upwards, avoiding the sweet potato stems and leaves of two adjacent ridges from becoming entangled and breaking.

[0010] Preferably, the diameter of the plurality of leaf-turning rollers decreases sequentially from the inside to the outside along the radial direction of the first or second impeller, so as to prevent the sweet potato stems and leaves being turned from getting tangled on the impeller.

[0011] Preferably, the spacing between two adjacent leaf-turning mechanisms corresponds to the width of the ridge.

[0012] The beneficial effects of this utility model through the above technical solution are as follows: This invention involves a trolley moving along the furrows on both sides of the field. First, the separating block lifts the stems and leaves in the furrow, allowing them to be lifted by the first leaf-turning rod. Then, the second leaf-turning rods on both sides lift them upwards and to the sides, thus lifting the stems and leaves while turning them to the sides, completing the leaf-turning operation. Compared with manual leaf turning, this not only greatly reduces labor intensity but also effectively improves leaf-turning efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0014] Figure 2This is a schematic diagram of the structure of the present invention. Figure 2 .

[0015] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 .

[0016] The numbers in the attached diagram are as follows: 1 is the trolley, 2 is the separating block, 3 is the support block, 4 is the rotating shaft, 5 is the rotating rod, 6 is the first leaf-turning rod, 7 is the second leaf-turning rod, 8 is the leaf-turning roller, and 9 is the motor. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 1-3 As shown, this embodiment provides a sweet potato leaf-turning device, including a trolley 1. The front end of the trolley 1 is provided with multiple leaf-turning mechanisms at intervals. The spacing between two adjacent leaf-turning mechanisms corresponds to the width of the field ridge. Specifically, there are three leaf-turning mechanisms. Two adjacent leaf-turning mechanisms are located on the two sides of the corresponding field ridge. Two train wheels are provided on both sides of the trolley 2. The wheels are located directly behind the two leaf-turning mechanisms at both ends, that is, in the ditch between the field ridges. The trolley 1 is driven to move by a motor or a motor plus a reducer.

[0018] The frame of the trolley 1 includes telescopic cylinders and rods. The two ends of the rods are slidably fitted into two symmetrically arranged telescopic cylinders. The telescopic cylinders have first insertion holes running through them vertically. The two ends of the rods have second insertion holes running through them vertically. The telescopic cylinders and rods are fixed by inserting screws into the corresponding first insertion holes and threading them into the second insertion holes. Correspondingly, the rotating rod 5 (the rotating rod 5 is a telescopic rod structure) includes multiple short shafts connected by splines. While ensuring synchronous rotation, it adapts to the extension and retraction of the frame. Then, by sliding the two telescopic cylinders along the axial direction of the rods, the spacing between the two adjacent leaf-turning mechanisms can be adjusted to adapt to different field ridge widths.

[0019] The leaf-turning mechanism includes a first separating component and a second separating component. The first separating component includes a separating block 2. The front end of the separating block 2 is set in a conical shape, and the longitudinal section of the separating block 2 is a right-angled trapezoid. Specifically, the separating block 2 adopts a plate-like structure, which is a V-shaped plate with the tip of the V-shaped plate facing the front of the trolley. The lower side of the separating block 2 is basically flush with the lower side of the wheel. The tip of the front end of the separating block 2 is a smooth inclined surface that slopes backward from bottom to top. By moving the separating block 2 forward, the sweet potato stems and leaves in the furrows between the ridges are lifted upward on one hand and separated to both sides on the other. Lifting upward is to facilitate the subsequent leaf-turning operation, and separating to both sides is to push the stems and leaves of the sweet potatoes on the two adjacent ridges to their respective ridges to avoid them getting tangled together and causing damage during leaf turning.

[0020] Baffles are provided on both sides of the wheel. The front side of the baffle is fixedly connected to the two sides of the rear side of the corresponding separation block 2. The baffles prevent the sweet potato stems and leaves after they have been turned from falling in front of the wheel and being crushed.

[0021] As one possible implementation, the lower part of the baffle is inclined away from the corresponding wheel, so that the lower side of the baffle fits against the side of the ridge.

[0022] The second separating component includes a first impeller and a second impeller. A support block 3 is fixedly installed on the upper side of the separating block 2. The support block 3 is fixedly connected to the trolley 1. A rotating shaft 4 is rotatably passed through the support block 3. A first driving component is installed on the trolley 1. The first driving component is used to drive the rotating shaft 4 to rotate. The first driving component includes a motor 9 and a rotating rod 5. The motor 9 is fixedly installed on the trolley 1 and the rotating rod 5 is rotatably installed. The output end of the motor 9 is connected to the rotating rod 5 through a transmission. The rotating rod 5 is connected to multiple rotating shafts 4 through a chain transmission. The support block 3 is hollow and has an opening on its upper side. The part of the rotating shaft 4 located in the corresponding support block 3 is connected to the rotating rod 5 through the corresponding opening through a chain transmission. The output end of the motor 9 is connected to the rotating rod 5 through a chain transmission.

[0023] Both ends of the rotating shaft 4 extend from the separation block 2 and are coaxially fixedly connected to a first impeller and a second impeller. There is a gap between the first impeller and the second impeller. When the rotating shaft 4 rotates, it drives the first impeller and the second impeller to rotate synchronously. The first impeller is evenly provided with multiple first leaf-turning rods 6 in the circumference, and the second impeller is evenly provided with multiple second leaf-turning rods 7 in the circumference. The first leaf-turning rods 6 and the second leaf-turning rods 7 are staggered. The length of the first leaf-turning rod 6 is greater than the length of the second leaf-turning rod 7. As the first impeller rotates, the first leaf-turning rod 7 lifts the end of the sweet potato stem and leaves (i.e., the head of the sweet potato vine) held by the separation block 2 upward. Then, the second leaf-turning rod 7 on the second impeller lifts the middle part of the stem and leaves. During the upward lifting process, it falls to both sides under the drag of the sweet potato body, thus realizing the upward lifting and falling of the sweet potato stem and leaves (or vines), thereby completing the leaf-turning work.

[0024] Both the first leaf-turning rod 6 and the second leaf-turning rod 7 are rotatably fitted with leaf-turning rollers 8. The diameter of the plurality of leaf-turning rollers 8 decreases from the inside to the outside along the radial direction of the first impeller or the second impeller. By rotating the leaf-turning rollers 8, the sweet potato stems and leaves are prevented from wrapping around the first leaf-turning rod 6 or the second leaf-turning rod 7. At the same time, since the leaf-turning rollers 8 are thicker closer to the inside, the sweet potato stems and leaves are further prevented from wrapping around and getting entangled near the first impeller or the second impeller.

[0025] In use, the wheels of the trolley 1 are positioned in the furrows on opposite sides of the two ridges. The sweet potato stems and leaves in the three furrows are turned by three leaf-turning mechanisms. First, the trolley 1 is driven forward, and at the same time, the motor drives the three rotating shafts 4 to rotate synchronously. Then, the forward movement of the separating block 2 lifts the sweet potato stems and leaves in the furrows between the ridges upward and separates them to the sides. Lifting them upward facilitates the subsequent leaf-turning operation, while separating them to the sides pushes the sweet potato stems and leaves on the two adjacent ridges to their respective ridges, preventing them from getting tangled and damaged during leaf turning. The lifted sweet potato stems and leaves are picked up by the leaf-turning roller 8 on the first leaf-turning rod 6 and then by the leaf-turning roller 8 on the second leaf-turning rod 7. After jumping up, the stems and leaves are lifted upward and, due to the drag from their roots (and the second leaf-turning rod 7 is shorter than the first leaf-turning rod 6), they slide to the sides and flip over, completing the leaf turning. Furthermore, due to the obstruction of the baffles on both sides of the wheels, the sweet potato stems and leaves after leaf turning are prevented from falling in front of the wheels and being crushed, ensuring the smooth progress of the leaf turning work.

[0026] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A sweet potato leaf-turning device, comprising a trolley (1), characterized in that, The trolley (1) has multiple leaf-turning mechanisms spaced apart at the front end. Each leaf-turning mechanism includes a first separating member and a second separating member. The first separating member includes a separating block (2), and the front end of the separating block (2) is set to be conical. The second separating component includes a first impeller and a second impeller. A support block (3) is fixedly provided on the upper side of the separating block (2). A rotating shaft (4) is rotatably passed through the support block (3). The two ends of the rotating shaft (4) extend out of the separating block (2) and are coaxially fixedly connected to the first impeller and the second impeller in sequence. A plurality of first leaf-turning rods (6) are evenly distributed around the first impeller. A plurality of second leaf-turning rods (7) are evenly distributed around the second impeller. The first leaf-turning rods (6) and the second leaf-turning rods (7) are staggered. The length of the first leaf-turning rod (6) is greater than the length of the second leaf-turning rod (7). A leaf-turning roller (8) is rotatably sleeved on both the first leaf-turning rod (6) and the second leaf-turning rod (7). The trolley (1) is provided with a first driving component, which is used to drive the rotating shaft (4) to rotate.

2. The sweet potato leaf-turning device according to claim 1, characterized in that, The first driving component includes a motor (9) and a rotating rod (5). The motor (9) is fixedly mounted on the trolley (1) and the rotating rod (5) is rotatably mounted on it. The output end of the motor (9) is connected to the rotating rod (5) through a transmission. The rotating rod (5) is connected to multiple rotating shafts (4) through a chain transmission.

3. The sweet potato leaf-turning device according to claim 1, characterized in that, The longitudinal section of the separation block (2) is a right trapezoid.

4. The sweet potato leaf-turning device according to claim 1, characterized in that, The diameter of the plurality of leaf-turning rollers (8) decreases sequentially from the inside to the outside along the radial direction of the first impeller or the second impeller.

5. A sweet potato leaf-turning device according to claim 1, characterized in that, The spacing between two adjacent leaf-turning mechanisms corresponds to the width of the field ridge.

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