Cassava stalk cutting and collecting device

Abstract

The invention discloses a cassava stalk cutting and collecting device which comprises a device body and an external power source, the external power source is used for outputting power to the device body, and the device body comprises a rack; a collection box; a connecting device; a gearbox; a driving sprocket; a clamping and conveying device; a bottom end cutting device; a shifting rod; provided is a branch cutting device. The device is specially used for cutting cassava stalks through the bottom end cutting device before cassava harvesting, then the cassava stalks are conveyed through the clamping and conveying device, part of main branches and branches are separated through the branch cutting device, classified collection is conducted based on the collecting box, and the cassava harvesting convenience and automation level is improved; the device main body completes integral linkage only through a power shaft output by a machine matched with traction or an independent power source, the labor intensity of manual cutting, collecting and carrying of cassava stalks is reduced while automatic operation is constructed, and the technical effects of high cost performance and improvement of harvesting efficiency in agricultural production are achieved. The development trend is the same as that in the current field.

Description

Technical Field

[0001] This invention relates to the field of cassava stalk harvesting, and particularly to a cassava stalk cutting and collecting device. Background Technology

[0002] Cassava is a perennial plant widely cultivated in tropical and subtropical regions, belonging to the genus *Cassava* in the family Euphorbiaceae. Cassava stems are an important material for cassava propagation. Generally, lignified and healthy stems are selected as seed tubers. Cassava seed tubers are relatively brittle and have a tender outer skin, so they should be handled gently during cutting, transportation, and stacking to avoid damage.

[0003] Cassava harvesters mainly include digging harvesters and pulling harvesters. Generally, before harvesting cassava, the stalks need to be cut off and collected and moved to the periphery of the cassava field to facilitate the harvesting operation of the harvesting machinery, while also preserving the seed stalks for planting the following year.

[0004] Currently, the collection and transport of cassava stalks still relies on manual labor. Workers use knives to cut the cassava stalks one by one and collect them outside the harvest area before processing them. Manually cutting, collecting, and transporting cassava stalks is labor-intensive, inefficient, time-consuming, and inconvenient for centralized processing. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a cassava stalk cutting and collecting device. It mainly solves the technical problems of high labor intensity, low efficiency, time-consuming and labor-intensive and difficult to centrally process in the current cassava stalk cutting and collecting operation.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: This invention provides a cassava stalk cutting and collecting device, comprising a main body and an external power source. The external power source outputs power to the main body. The main body includes: a frame located at the bottom; a collecting box located at the rear of the frame, with an opening facing the front of the frame and a discharge port at the left rear; a connecting device located on the upper part of the frame, comprising a main shaft commutator connected to the external power source, a power output shaft driven to the main shaft commutator, and a three-point connecting frame for docking with the external power source; a gearbox located on one side of the connecting device and fixed to the upper side of the frame, with the gearbox corresponding longitudinally to the opening; the gearbox outputs power transmitted from the power output shaft; a drive sprocket located on top of the gearbox and driven by it; and a clamping and conveying device located cantilevered at the front of the frame, comprising an extension bracket, a tension sprocket, and a clamping chain engaged with the tension sprocket, the clamping chain and the tension sprocket being side-to-side. The clamping chain is installed on top of the extension bracket. One end of the clamping chain meshes with the drive sprocket for transmission. The side surface edge of the clamping chain is provided with teeth. The tension sprocket is used to tension the clamping chain. A bottom-end cutting device is included, comprising a universal coupling located at the front of the gearbox. A right-angle reversing device is driven and installed at the front end of the universal coupling. A bottom-end cutting blade is driven and installed on the right-angle reversing device. A baffle is provided on the side of the bottom-end cutting blade near the clamping chain, and the baffle is fixed to the extension bracket. The bottom-end cutting blade is used for horizontal direction. The bottom of the cassava stalk is rotated and cut. The bottom cutting blade is located at the bottom front end of the clamping and conveying device, and the universal coupling, right-angle reversing device, and bottom cutting blade are all installed at the bottom of the extension bracket. The pusher is installed along the top axis of the drive sprocket and is used to clamp and convey the cassava stalks to the inside of the collection box. The guide support plate is located on both sides of the upper end of the extension bracket. The gap between the two guide support plates facilitates the passage of the cassava stalks. The two guide support plates are located at the front and rear ends and are funnel-shaped.

[0007] Preferably, the collection box includes a left box, a right box, and a large box, wherein the left box and the right box are symmetrically arranged on the left and right sides of the opening, the large box is located inside the opening, and a conveying device is installed inside the large box near the opening. The conveying device is used to convey cassava stalks pushed by a lever, and a discharge port is opened at the rear of the collection box.

[0008] Preferably, the gearbox is connected to a gear drive at the rear, the gear drive extends into the large box and is connected to the conveying device, and the gearbox is mounted on the rear end of the extension bracket.

[0009] Preferably, a branch cutting device is installed on the upper part of the guide support plate, the branch cutting device comprising: A support frame is symmetrically installed on the upper part of the guide plates on both sides; multiple disc cutters are installed vertically at equal intervals on the inner side of the support frame, and the power shaft of the disc cutter extends to the outer surface of the support frame; a motor is located on the top of the outer surface of the support frame, and the motor is connected to the power shaft; a chain is located on the bottom side of the motor and is connected to the paired power shaft, and the chain is used to transmit the kinetic energy of the motor to the multiple power shafts.

[0010] Preferably, the number of disc cutting blades and the number of power shafts are the same, and the number of disc cutting blades is not less than four, and the gap between the disc cutting blades on both sides is greater than the gap between the clamping chains on both sides.

[0011] Preferably, the branch cutting device further includes: a long guide plate, which is symmetrically arranged in a trumpet shape at the front edge of the support frame; and an elastic support rod, which extends to both sides at the rear edge, with one side of the elastic support rod fixed to the left box and the other side of the elastic support rod fixed to the right box.

[0012] Preferably, the bottom of the collection box is equipped with support wheels on both sides, the opening of the collection box is located at the rear of the clamping and conveying device (6), and the length of the conveying device covers the width of the opening.

[0013] Preferably, the left box and the right box are located on the left and right sides of the opening, respectively, wherein the length of the left box extends from the vertical projection area of ​​the long guide plate to the left end of the large box; the right box extends from the vertical projection area of ​​the long guide plate to the front end adjacent to the large box, and the left box, the right box and the top of the large box are all open structures.

[0014] Preferably, the drive sprocket and the tension sprocket are arranged in a symmetrical C-shaped structure, and the drive sprocket and the tension sprocket are both located at the same horizontal plane height. The extension bracket is a double-layer structure and includes: an inner tube, a rear tension spring, a front tension spring, an adjustable nut, and an outer tube.

[0015] Preferably, the lever includes a height bar and a star-shaped bar mounted on top of the height bar, wherein at least three star-shaped bars are connected to the top of the height bar in a star-shaped configuration, and the height of the bottom cutting blade is not lower than that of the frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention can complete the operation using only a towed tractor, and the overall structure is mainly based on mechanical transmission, making it compatible with various towing machinery. The equipment itself is modularly connected, with the gearbox connecting to different modules such as cutting, transportation, and collection. When a module needs maintenance, it can be maintained directly from the outside without opening the gearbox for repair. Furthermore, if the gearbox itself is damaged, it can be directly replaced with the corresponding model gearbox. While having strong versatility and being easy to maintain, it can also automate the cutting and collection operations during cassava stalk harvesting.

[0017] 2: The branch cutting device added in this invention allows the branches on the main stem to be cut simultaneously during cassava harvesting. The branches are then stored in the left and right boxes, allowing for classified management while the main stem can be transported separately to the conveyor for centralized stacking. This reduces the labor intensity of manual cutting, collection, and handling of cassava stems. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a schematic diagram of the branch cutting device of the present invention; Figure 4 This is a schematic diagram of the clamping and conveying device of the present invention; Figure 5 This is a top view of the bottom cutting device structure of the present invention; Figure 6 This is a schematic diagram of the tooth structure of the present invention; In the diagram: 1. Collection box; 101. Right box; 102. Left box; 103. Large box; 104. Opening; 105. Discharge port; 2. Conveying device; 201. Gear transmission mechanism; 3. Support wheel; 4. Connecting device; 401. Three-point connecting frame; 402. Main shaft reversing device; 403. Power output shaft; 5. Bottom cutting device; 501. Baffle; 502. Bottom cutting blade; 503. Right angle reversing device; 504. Universal coupling; 6. Clamping and conveying device; 601. Drive sprocket; 602. Tensioning sprocket; 603. Clamping chain; 604. Inner tube; 605. Rear tension spring; 606. Front tensioning spring. 607. Adjustable nut; 608. Outer tube; 609. Extension bracket; 610. Tooth; 7. Guide plate; 8. Branch cutting device; 801. Elastic support rod; 802. Motor; 803. Chain; 804. Long guide plate; 805. Disc cutter; 806. Support frame; 807. Drive shaft; 9. Frame; 10. Alarm rod; 1001. Height rod; 1002. Star rod; 11. Gearbox; 12. Main body of the device. Detailed Implementation

[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] In the first embodiment of the present invention, the present invention provides a cassava stalk cutting and collecting device. The main body 12 of the device is driven by an external power source, which can be a tractor output shaft or an engine. The main body 12 of the device itself includes: The frame 9 is located on the bottom side of the main body 12 of the device and is used to support the overall weight of the main body 12 of the device. Collection box 1 is located at the rear of frame 9 and has an opening at the left end. Collection box 1 includes a left box 102, a right box 101 and a large box 103. The left box 102 and the right box 101 are used to store the branches of cassava stalks, and the large box 103 is used to store the main branches of cassava stalks. The connecting device 4 is located on the upper part of the frame 9. The connecting device 4 includes a spindle commutator 402 and a three-point connecting frame 401. The spindle commutator 402 is connected to an external power source and is used to transmit kinetic energy to other required kinetic energy mechanisms according to the power output shaft 403. The three-point connecting frame 401 serves as a connecting mechanism for the external power source. The gearbox 11 is used to receive the kinetic energy transmitted from the power output shaft 403 and output it to other power components. The drive sprocket 601 is located on top of the gearbox 11 and is driven by it. A lever 10 is provided at the top of the drive sprocket 601 so that when the lever 10 contacts the main branch of the cassava stalk, it can be directly pushed into the collection box 1. Universal coupling 504 is located at the front of gearbox 11. Power is generated by gearbox 11. Right angle reversing device 503 is provided at the front end of universal coupling 504. Power is transmitted to the bottom cutting blade 502 through right angle reversing device 503, so that the bottom cutting blade 502 rotates horizontally to cut the cassava stalks close to the ground and achieve the harvesting function. The clamping and conveying device 6 is cantilevered at the front of the frame 9 and located behind the bottom cutting blade 502. The clamping and conveying device 6 is equipped with an extension bracket 609, a tension sprocket 602, and a clamping chain 603 engaged by the tension sprocket 602. The clamping chain 603 is symmetrically arranged on the left and right sides. The edge of the clamping chain 603 is also provided with teeth 610. One end of the clamping chain 603 is engaged with the drive sprocket 601, so that after the drive sprocket 601 is driven by the clutch, it is driven to the clamping chain 603. The clamping chains 603 on both sides clamp and fix the cut cassava stalks according to the teeth 610, and move into the collection box 1 through the movement of the clamping chain 603. The guide plate 7 is located on both sides of the upper end of the extension bracket 609, and its two ends are trumpet-shaped to ensure that the middle part of the cut cassava stalk smoothly enters the gap between the clamping chains 603 on both sides; the guide plate 7 is also equipped with 4 springs at the front and rear, such as Figure 3 As shown, the guide plate 7 is set at the connection node of the vertical rod of the extension support 609, so that the guide plate 7 can also gather and guide the cassava stalks. Conveying device 2, located inside the large box 103, is driven by gear transmission mechanism 201, such as... Figure 5 As shown, the cassava stalks fall onto the conveying device 2 after entering the inner side of the large box 103, and are continuously conveyed to the left side of the large box 103 in the forward direction of the main body 12 of the device, where they are stacked neatly in sequence to prevent the cassava stalks from blocking the inlet of the collection box 1; at the same time, the unloading port 105 set at the rear can be opened to longitudinally collect and remove the cassava stalks inside the large box 103.

[0021] For details, please refer to Figure 1 The main body 12 of the device includes various parts for power transmission, cutting, cassava stalk transportation, and collection. These different parts are all connected by a single power transmission system, i.e., an external power source, such as a tractor output shaft or an engine. Both can output power to the main shaft commutator 402, which then transmits kinetic energy to the gearbox 11 via the power output shaft 403. Figure 3 As shown; The gearbox 11 then distributes power to the cutting, cassava stalk transport, and collection sections, respectively. Please refer to [link / reference]. Figure 2 , Figure 2 The upper structure of the main body 12 is located in the center, with the opening 104 and the clamping and conveying device 6 both located on the same side; please refer to [link / reference]. Figure 1 , 3 And 4, so the extension bracket 609 of the clamping and conveying device 6 is also located in the opening 104, and the gearbox 11 is installed between the double-layer extension bracket 609. The top of the gearbox 11 drives the drive sprocket 601 to move, and the drive sprocket 601 forms the power source of the clamping and conveying device 6, so that the symmetrical clamping chain 603 can clamp the cut cassava stalks through the gap; that is, the drive sprocket 601 forms a symmetrical C-shaped structure through the clamping chain 603 and the tension sprocket 602, so that the teeth 610 on the edge of the clamping chain 603 alternately clamp and transport the cut cassava stalks until they move from the longitudinal front end to the rear end of the lever 10. The lever 10 is also driven by the drive sprocket 601. Based on the lifting height of the height bar 1001, the star bar 1002 knocks the cassava stalks into the inside of the collection box 1 from the top. Please see Figure 1-2 The star-shaped rod 1002 applies force to the cassava stalks from above, causing them to tilt longitudinally and making the axial direction of the cassava stalks perpendicular to the transport direction of the conveying device 2. This causes the cassava stalks to continuously pile up away from the right box 101 until they form a pile to facilitate subsequent bundling operations. In a further embodiment, in order to maintain the tension of the clamping chain 603 by means of the tensioning sprocket 602, the upper structure of the extension bracket 609 is divided into an inner tube 604 and an outer tube 608 for adjustment. Please refer to [link to relevant documentation]. Figure 4 The distance between the middle tension sprockets 602 can be adjusted by the rear tension spring 605, so that the gap between the clamping chains 603 on both sides can be easily adjusted to meet the diameter of different cassava stalks and fine-tune the tension of the clamping chains 603; at the same time, there is also an independently set tension sprocket 602 at the front, that is, the length distance between the frontmost tension sprocket 602 and the rear tension sprocket 602 can be adjusted by the front tension spring 606 and the adjustable nut, so that the tension sprocket 602 can greatly adjust the tension of the clamping chains 603 through the adjustment of the front end; The cassava stalks are mainly cut near the ground by the bottom cutting device 5 at the bottom of the clamping and conveying device 6. Please refer to [link / reference]. Figure 5 The gearbox 11 mainly transmits power to the universal coupling 504 at the front, and then the right-angle commutator 503 causes the bottom cutting blade 502 to rotate horizontally for cutting. At the same time, the baffle 501 set next to the bottom cutting blade 502 guides the cassava stalk during cutting, allowing the cassava stalk to move toward the clamping and conveying device 6.

[0022] For example, taking tractor operation as an example, when it is necessary to harvest cassava stalks, before operation, the three-point connecting frame 401 at the frame 9 is connected to the rear of the tractor, and then the power source can be transmitted through the main shaft commutator 402 on the right side of the machine's forward direction of power output shaft 403. During operation, the tractor is first driven to pull the connected device toward the cassava ridge. While moving, the bottom cutting device 5 and the clamping conveyor 6 are aligned with the cassava stalks. The guide support plate 7 and the baffle 501 guide and gather the cassava stalks so that the bottom of the cassava stalks are clamped and cut. The cassava stalks are moved along with the guide support plate 7 and the baffle 501. Since the height of the bottom cutting blade 502 is not lower than the frame 9, the cut cassava stalks are only fixed at the bottom by the clamping chain 603. The lower part can pass over the frame 9 and enter the opening 104 until it is laid down on the conveyor 2 by the pusher 10. Then, the conveyor 2 continuously piles up the cassava stalks to the left and right sides in the direction of machine movement to achieve the overall operation of the cassava stalks.

[0023] Since the main body 12 of this device does not require an additional external power source, it can complete the operation solely by using a towed tractor. The overall structure is mainly based on mechanical transmission, making it compatible with various towing machinery. The equipment itself is modularly connected, with the gearbox 11 connecting to different modules such as cutting, transportation, and collection. When a module needs maintenance, it can be maintained directly from the outside without opening the gearbox 11 for repair. Furthermore, if the gearbox 11 itself is damaged, it can be directly replaced with a gearbox of the corresponding model. While possessing strong versatility and ease of maintenance, it can also automate the cutting and collection operations during cassava stalk harvesting. Additionally, it can automatically adjust the clamping and conveying device 6 according to the actual diameter of the cassava stalks.

[0024] In the second embodiment of the present invention, the difference from the first embodiment is as follows: Branch cutting device 8 includes a support frame 806 extending vertically from the guide support plate 7, a disc cutter 805 located inside the support frame 806, a motor 802 located at the top outside the support frame 806, a chain 803 located at the bottom of the motor 802, a long guide plate 804 located at the front edge of the support frame 806, and elastic support rods 801 extending to both sides from the rear edge of the support frame 806. The chain 603 is clamped at the lower part and moved by the teeth 610. When the cassava stalk is moved, the equally arranged disc cutting blades 805 at the top are driven by the motor 802 and the chain 803, so that the upper part can also adjust the position of the cassava stalk through the long guide plate 804 and complete the cutting operation of the branches. Because the upper part extends to a high height, elastic support rods 801 are provided on both sides and fixed through the left box 102 and the right box 101, so that the cut branches can fall into the left box 102 or the right box 101 along the inclined elastic support rods 801.

[0025] Specifically, the clamping and conveying device 6 operates in the same manner as in Embodiment 1. Since the cassava stalks have a branched structure, when the clamping chain 603 transports the cassava stalks to the branching and cutting device 8, the power output by the motor 802 is transmitted by the chain 803 to the paired power shafts 807. Please refer to [link to relevant documentation]. Figure 1 and 3 Multiple disc cutters 805 will rotate synchronously, allowing the branches of the cassava stalks to be directly cut by the disc cutters 805, and fall into the left box 102 and the right box 101 respectively for storage.

[0026] The long guide plate 804 primarily guides the upper part of the cassava stalk, allowing the main stem of the cassava stalk to pass longitudinally between the two disc cutting blades 805. Before being cut, the branches gradually converge towards the main stem along the long guide plate 804 until the branch height exceeds the position of the long guide plate 804. At this point, after being cut by the disc cutting blades 805, the branches will cross the long guide plate 804 and fall into the left box 102 or the right box 101, where they are blocked by the elastic support rod 801 to prevent them from bouncing to the rear. At the same time, the long guide plate 804 can also concentrate the branches on both sides of the main stem. If there are branches growing in multiple directions on both sides of the main stem, as they move forward, the branches will converge towards the main stem due to the gradually narrowing long guide plate 804, allowing the branches to be concentrated on both sides of the main stem when the long guide plate 804 is at its narrowest point, thus achieving a concentrated cutting effect.

[0027] like Figure 3 As shown, a tall support frame 806 extends from the middle of the guide support plate 7. An elastic support rod 801 for support is provided at the rear edge of the support frame 806. The elastic support rod 801 can adjust its extension length, allowing the support frame 806 to be adjusted left and right to adjust the cutting length of the branch.

[0028] The added branch cutting device 8 allows the branches on the main stem to be cut simultaneously during cassava harvesting, while storing the branches in only the left box 102 and the right box 101. This allows for classified management while the main stem can be transported separately to the conveyor device 2 for centralized stacking.

[0029] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. 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 cassava stalk cutting and collecting device, comprising a device body (12) and an external power source, wherein the external power source is used to output power to the device body (12), characterized in that, The main body (12) of the device includes: A frame (9) is located at the bottom of the main body (12) of the device; Collection box (1), the collection box (1) is located at the rear of the frame (9), and the collection box (1) has an opening (104) facing the front of the frame (9), and a discharge port (105) is provided on the rear side away from the opening (104). The connecting device (4) is located on the upper part of the frame (9). The connecting device (4) includes a spindle commutator (402) connected to an external power source, a power output shaft (403) connected to the spindle commutator (402), and a three-point connecting frame (401) for docking with the external power source. The gearbox (11) is located on one side of the connecting device (4) and is fixed to the upper side of the frame (9) through a transmission connection, and the gearbox (11) corresponds to the longitudinal position of the opening (104); the gearbox (11) is used to output and distribute the power transmitted from the power output shaft (403); A drive sprocket (601) is located on top of the gearbox (11) and driven by it; A clamping and conveying device (6) is installed in a cantilevered manner at the front of the frame (9). The clamping and conveying device (6) includes an extension bracket (609), a tension sprocket (602), and a clamping chain (603) meshed with the tension sprocket (602). The clamping chain (603) and the tension sprocket (602) are symmetrically installed on the top of the extension bracket (609). One end of the clamping chain (603) is driven by a drive sprocket (601). The side surface edge of the clamping chain (603) is provided with teeth (610). The tension sprocket (602) is used to tension the clamping chain (603). Bottom cutting device (5), the bottom cutting device (5) includes a linkage mechanism and a universal coupling (504), the universal coupling (504) is located at the front of the gearbox (11), the front end of the universal coupling (504) is driven by a right angle commutator (503), the right angle commutator (503) is driven by a bottom cutting blade (502), the gearbox (11) is driven to the bottom cutting blade (502) through the linkage mechanism, the bottom cutting blade (502) is provided with a baffle (501) on one side, and the baffle (501) is fixed on the extension bracket (609) and symmetrical to the bottom cutting blade (502), the bottom cutting blade (502) is located at the bottom of the front end of the clamping and conveying device (6), and the universal coupling (504), the right angle commutator (503) linkage mechanism and the bottom cutting blade (502) are all installed at the bottom of the extension bracket (609); A lever (10) is mounted along the axis at the top of the drive sprocket (601).

2. The cassava stalk cutting and collecting device according to claim 1, characterized in that, The connecting device (4) includes a spindle commutator (402) connected to an external power source, a power output shaft (403) driven to the spindle commutator (402), and a three-point connecting frame (401) for docking with the external power source; the gearbox (11) is used to output and distribute the power transmitted from the power output shaft (403). The collection box (1) includes a left box (102), a right box (101), and a large box (103). The left box (102) and the right box (101) are symmetrically arranged on the left and right sides of the opening (104). The large box (103) is located inside the opening (104). A conveying device (2) is installed inside the large box (103) near the opening (104). The conveying device (2) is used to convey cassava stalks pushed by a lever. A gear transmission mechanism (201) is connected to the rear of the gearbox (11). The gear transmission mechanism (201) extends into the large box (103) and is connected to the conveying device (2). The gearbox (11) is installed at the rear end of the extension bracket (609). The linkage mechanism includes a universal joint (504) and a right-angle commutator (503). The universal joint (504) is located at the front of the gearbox (11). The right-angle commutator (503) is driven and installed at the front end of the universal joint (504). The right-angle commutator (503) is driven and installed to the bottom cutting blade (502).

3. A cassava stalk cutting and collecting device according to claim 1 or 22, characterized in that, The collection box (1) includes a left box (102), a right box (101), and a large box (103). The left box (102) and the right box (101) are symmetrically arranged on the left and right sides of the opening (104). The large box (103) is located inside the opening (104). A conveying device (2) is installed inside the large box (103) near the opening (104). A gear transmission mechanism (201) is connected to the rear of the gearbox (11). The gear transmission mechanism (201) extends into the large box (103) and is connected to the conveying device (2). The gearbox (11) is installed at the rear end of the extension bracket (609). A discharge port (105) is provided on the rear side of the large box (103) away from the opening (104). The main body (12) of the device also includes guide plates (7), which are located on both sides of the upper end of the extension bracket (609). The guide plates (7) on both sides are located at the front and rear ends in a trumpet shape.

4. A cassava stalk cutting and collecting device according to claim 31 or 3, characterized in that, A branch cutting device (8) is installed on the upper part of the guide support plate (7), and the branch cutting device (8) includes: A support frame (806) is symmetrically installed on the upper part of the guide support plates (7) on both sides; A plurality of the disc cutters (805) are installed vertically at equal distances on the inner side of the support frame (806), and the power shaft (807) of the disc cutters (805) extends to the outer surface of the support frame (806); The motor (802) is located on the top of the outer surface of the support frame (806), and the motor (802) is connected to the power shaft (807) by chain drive. A chain (803) is located on the bottom side of the motor (802) and is connected to a pair of power shafts (807) for transmission. The chain (803) is used to transmit the kinetic energy of the motor (802) to the multiple power shafts (807).

5. The cassava stalk cutting and collecting device according to claim 4, characterized in that, The number of the disc cutting blades (805) and the power shaft (807) are the same, and the number of disc cutting blades (805) is not less than four. The gap between the disc cutting blades (805) on both sides is greater than the gap between the clamping chains (603) on both sides.

6. A cassava stalk cutting and collecting device according to claim 5, characterized in that, The branch cutting device (8) also includes: The long guide plate (804) is located at the front edge of the support frame (806) and is symmetrically arranged in a trumpet shape; An elastic support rod (801) is located at the rear edge and extends to both sides. One side of the elastic support rod (801) is fixed to the left box (102), and the other side of the elastic support rod (801) is fixed to the right box (101).

7. A cassava stalk cutting and collecting device according to claim 6, characterized in that, The bottom sides of the collection box (1) are equipped with support wheels (3), the opening (104) of the collection box (1) is located at the rear of the clamping conveying device (6), and the length of the conveying device (2) covers the width of the opening (104).

8. A cassava stalk cutting and collecting device according to claim 7, characterized in that, The left box (102) and the right box (101) are located on the left and right sides of the opening (104), respectively. The length of the left box (102) extends from the vertical projection area of ​​the long guide plate (804) to the left end of the large box (103). The right box (101) extends from the vertical projection area of ​​the long guide plate (804) to the front end of the large box (103). The tops of the left box (102), the right box (101) and the large box (103) are all open structures.

9. A cassava stalk cutting and collecting device according to claim 8, characterized in that, The drive sprocket (601) and tension sprocket (602) are arranged in a symmetrical C-shaped structure. The drive sprocket (601) and tension sprocket (602) are both located at the same horizontal plane height. The extension bracket (609) is a double-layer structure and includes: an inner tube (604), a rear tension spring (605), a front tension spring (606), an adjustable nut (607), and an outer tube (608).

10. A cassava stalk cutting and collecting device according to claim 9, characterized in that, The lever (10) includes a height rod (1001) and a star-shaped rod (1002) installed on the top of the height rod (1001). The star-shaped rod (1002) consists of at least three rods connected to the top of the height rod (1001) in a star-shaped configuration. The height of the bottom cutting blade (502) is not lower than that of the frame (9).

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