Lodging sugarcane tail cutting mechanism capable of adjusting spacing

Abstract

The utility model discloses a lodging sugarcane tail-cutting mechanism capable of adjusting spacing, which is mounted in a sugarcane conveying channel and comprises two fixed rollers, a plurality of fixed rollers, a plurality of fixed rollers, a plurality of fixed rollers, a plurality of fixed rollers, a plurality of fixed rollers and a plurality of fixed rollers, the two fixed rollers are mounted on the sugarcane conveying channel, and the two fixed rollers are distributed front and back at intervals; the movable roller is installed on the sugarcane conveying channel and located above the fixed roller; the two fixed rollers and the two movable rollers are distributed in a triangular shape; wherein the movable roller can move up and down; the first moving mechanism is used for driving the movable roller to move up and down; each fixed roller is provided with a plurality of tooth-shaped rubber plates, and each movable roller is also provided with a plurality of tooth-shaped rubber plates; and the power device is used for driving the two fixed rollers and the movable roller to rotate. By the adoption of the sugarcane tail breaking mechanism, the distance between the movable roller and the fixed roller can be adjusted according to the variety and the diameter of sugarcanes in a planting field, then the shearing acting force for tail breaking is adjusted, and the tail breaking effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of sugarcane harvesting machinery, in particular to a lodging sugarcane tail cutting mechanism with adjustable spacing. Background Art

[0002] When harvesting sugarcane with a sugarcane harvester, the tip cutter at the front of the harvester first cuts the tail of the sugarcane, then uses a knife disc to cut the head of the sugarcane. The sugarcane is then conveyed into the sugarcane conveying channel, where it is transported and stripped backward by conveyor rollers and leaf stripping rollers, and finally conveyed to the sugarcane box at the rear. Because the tip cutter cannot cut the fallen sugarcane tail at the front, a sugarcane tail cutting mechanism is often installed at the rear end of the sugarcane conveying channel to cut the sugarcane tail.

[0003] Existing sugarcane tail-chopping mechanisms typically include three rotating rollers arranged in a triangle shape. The distance between the three rollers is either fixed or spring-loaded, allowing them to float up and down. For example, Chinese patent publication number CN113148524A, entitled "Sugarcane Tail-Chopping Device," discloses a sugarcane tail-chopping device comprising a crushing roller and two sets of conveyor rollers. The two sets of conveyor rollers are located at the front and rear sides of the feed direction, forming a tail-chopping channel between the two sets of conveyor rollers. The two sets of conveyor rollers are connected by a transmission device for synchronous rotation. The crushing roller is located between the two sets of conveyor rollers. The crushing roller and the conveyor rollers rotate in opposite directions, driven by an external power source. The crushing roller includes a rotating shaft, a pressing cylinder, and an elastic guide. The rotating shaft is connected to the inner wall of the pressing cylinder by two or more sets of elastic guides spaced axially apart. The elastic guide includes a positioning platform, a spring, a spring seat a, and a guide linkage. The mechanism's elastic guide only maintains the orientation of the breaking rollers. The crushing force relies entirely on spring force. Furthermore, the rolling process compresses and shears the springs in multiple directions, which can easily cause permanent deformation and bending. This deformation can cause the breaking rollers to deviate from their axis, shortening their overall lifespan. Furthermore, the spring's elasticity is limited—that is, the distance between the breaking rollers and the conveyor rollers is limited. Sugarcane diameters vary greatly depending on sugarcane variety and plantation management, and the diameter of sugarcane varies from field to field. If the sugarcane diameter is too small, the tailing may not be effectively achieved. If the sugarcane diameter is too large, the shearing force applied to it by the breaking rollers will be significant, potentially breaking brittle sugarcane into multiple sections. Utility Model Content

[0004] The purpose of the utility model is to provide a lodged sugarcane tail cutting mechanism with adjustable spacing, so as to overcome the shortcomings of the existing sugarcane tail cutting mechanism in that the spacing between the pressure breaking roller and the conveying roller cannot be adjusted, or when a spring is used for adjustment, the adjustment distance is limited, the shearing force fluctuates up and down, and the tail cutting effect may not be achieved or the sugarcane may be broken into several sections due to excessive shearing force.

[0005] To achieve the above-mentioned purpose, the utility model provides a lodging sugarcane tail-breaking mechanism with adjustable spacing, the sugarcane tail-breaking mechanism is installed in the sugarcane conveying channel, the sugarcane conveying channel is distributed along the front-to-back direction, the sugarcane tail-breaking mechanism comprises: two fixed rollers, the two fixed rollers are rotatably installed on the sugarcane conveying channel, and the two fixed rollers are spaced apart from each other, and the axis of each fixed roller is distributed along the left-right direction; a movable roller, which is rotatably installed on the sugarcane conveying channel, the axis of the movable roller is distributed along the left-right direction, and the movable roller is located at Above the fixed roller; the two fixed rollers and the movable roller are distributed in a herringbone shape; wherein the movable roller can move up and down; a first moving mechanism, which is installed on the sugarcane conveying channel, and is used to drive the movable roller to move up and down; toothed rubber plates, each of the fixed rollers is provided with a plurality of evenly distributed toothed rubber plates along its circumferential direction, and the movable roller is also provided with a plurality of evenly distributed toothed rubber plates along its circumferential direction; and a power device, which is used to drive the two fixed rollers and the movable roller to rotate; wherein the rotation direction of the movable roller is opposite to the rotation direction of the fixed roller.

[0006] Preferably, in the above technical solution, the left and right side walls of the sugarcane conveying channel are provided with through holes whose lengths are distributed in the up and down directions at positions corresponding to the movable rollers, and the left and right ends of the movable rollers respectively pass through the corresponding through holes and extend outward, and the movable rollers can move up and down along the through holes.

[0007] Preferably, in the above technical solution, the first moving mechanism includes: a first screw rod, two first screw rods parallel to each other are provided on the outer side of each through hole, and each first screw rod is rotatably connected to the sugarcane conveying channel; a first motor, the first motor is installed on the sugarcane conveying channel, and the first motor corresponds to the first screw rod one by one, and the rotating shaft of each first motor is connected to the corresponding first screw rod; and a first moving platform, a first moving platform is provided between two adjacent first screw rods, and each first moving platform is provided with a first sleeve threadedly connected to the corresponding first screw rod on the front and rear sides; the two ends of the movable roller are respectively rotatably connected to the corresponding first moving platform.

[0008] Preferably, in the above technical solution, the power device is arranged on the left side or right side of the sugarcane conveying channel; wherein the power device includes: two first tensioning wheels, the two first tensioning wheels are symmetrically distributed front and back, and the two first tensioning wheels can move up and down synchronously with the movable roller; the end of the movable roller is provided with a movable sprocket located between the two first tensioning wheels; a second tensioning wheel is installed on the sugarcane conveying channel in a manner that can move up and down and is located below between the two fixed rollers; the second tensioning wheel is driven up and down by a second moving mechanism; the ends of the two fixed rollers are provided with fixed sprockets; a chain is wound around the outside of the two fixed sprockets, the two first tensioning wheels and the second tensioning wheel; the lower end of the movable sprocket is meshed with the chain; and an external power, which is connected to one of the fixed rollers to drive the fixed roller to rotate.

[0009] Preferably, in the above technical solution, the second moving mechanism includes: two second screw rods, the two second screw rods are rotatably mounted on the sugarcane conveying channel and are distributed parallel to each other front and back, and the two second screw rods are respectively located on the front and back sides of the second tensioning wheel; two second motors, the two second motors are both mounted on the sugarcane conveying channel, and the ends of the two second screw rods are each connected to one second motor; and a second moving platform, which is mounted between the two second screw rods, and the front and back sides of the second moving platform are each provided with a second sleeve threadedly connected to the corresponding second screw rod; the second tensioning wheel is mounted on the second moving platform.

[0010] Preferably, in the above technical solution, the teeth of the toothed rubber plate are in the shape of bowling pins.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The sugarcane tail cutting mechanism of the present invention has a simple structure and is not easy to damage. The first movable mechanism can drive the movable roller to move up and down, thereby adjusting the distance between the movable roller and the fixed roller. The adjustment range is large and the distance can be adjusted according to the condition of the sugarcane. In turn, the shearing force of the tail cutting can be adjusted to accommodate different varieties and diameters of sugarcane in different planting fields. This prevents the sugarcane from being broken into several sections or unable to be tail cut due to excessive shearing force, thereby ensuring the tail cutting effect.

[0013] 2. The sugarcane tail cutting device of this invention utilizes two first and second tensioning wheels and a chain to drive the two fixed rollers to rotate backward and the movable roller to rotate forward, thereby cutting the sugarcane tail. The device features a simple structure. As the movable roller moves up and down, the first tensioning wheel also moves up and down synchronously with the movable roller, ensuring that the chain and the movable sprocket are always engaged. The second moving mechanism also synchronously drives the second tensioning wheel to move up and down with the movable roller, ensuring that the chain is properly tensioned, thereby ensuring smooth operation of the entire device.

[0014] 3. The teeth of the toothed rubber plate of this utility model are shaped like bowling pins. The tips of the teeth are relatively enlarged, increasing their weight and thereby increasing the impact force on the sugarcane during rotation. As the sugarcane passes through the device, it is sheared by the impact forces from different directions, breaking at appropriate locations. The roots of the teeth are relatively thin, reducing the sustained force on the sugarcane after contact and thus preventing large-scale breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic structural diagram of a lodging sugarcane tail cutting mechanism with adjustable spacing.

[0016] Figure 2 According to the utility model Figure 1 Rear view diagram in .

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the lodging sugarcane tail cutting mechanism with adjustable spacing according to the utility model.

[0018] Figure 4 It is a three-dimensional structural schematic diagram from another perspective of the lodging sugarcane tail cutting mechanism with adjustable spacing according to the utility model.

[0019] Description of main reference numerals:

[0020] 1-first motor, 2-first screw rod, 3-movable roller, 4-first mobile platform, 5-first tensioning wheel, 6-chain, 7-fixed roller, 9-second screw rod, 10-second motor, 11-second tensioning wheel, 8-second mobile platform, 12-toothed rubber plate. DETAILED DESCRIPTION

[0021] The specific implementation of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.

[0022] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations such as "include" or "comprising", etc., will be understood to include the stated elements or components but not to exclude other elements or other components.

[0023] Figures 1 to 4 A schematic diagram shows the structure of a fallen sugarcane tail-chopping mechanism with adjustable spacing according to a preferred embodiment of the present invention. The tail-chopping mechanism is installed within a sugarcane conveying channel, which runs along the front-to-back direction. It is used to transport sugarcane backward and strip the leaves. The tail-chopping mechanism includes two fixed rollers 7, a movable roller 3, a first movable mechanism, a toothed rubber plate 12, and a power unit.

[0024] refer to Figures 1 to 4 Two fixed rollers 7 are rotatably mounted on the sugarcane conveyor channel, spaced apart in front and back, with the axis of each roller 7 extending left-right, to convey the sugarcane backward. The movable rollers 3 are rotatably mounted on the sugarcane conveyor channel, with their axes extending left-right and positioned above the fixed rollers 7. The two fixed rollers 7 and the movable rollers 3 are arranged in a herringbone pattern, used to trim the sugarcane ends. The movable rollers 3 are capable of vertical movement. A first movement mechanism is mounted on the sugarcane conveyor channel, driving the movable rollers 3 up and down to adjust the spacing between the movable rollers 3 and the fixed rollers 7. This wide adjustment range allows for adjustment of the spacing, and thus the shearing force, to suit different sugarcane varieties and diameters in different fields. This prevents the sugarcane from breaking into multiple sections or becoming impossible to trim due to excessive shearing force, ensuring effective trimming. Each fixed roller 7 is equipped with multiple evenly spaced toothed rubber plates 12 along its circumference, and the movable roller 3 is also equipped with multiple evenly spaced toothed rubber plates 12 along its circumference. These plates enable both conveying the sugarcane and applying pressure to the sugarcane to trim the tails. A power unit drives the two fixed rollers 7 and the movable roller 3 to rotate; the movable roller 3 rotates in the opposite direction of the fixed rollers 7 to trim the sugarcane tails.

[0025] refer to Figures 1 to 4 Preferably, the left and right side walls of the sugarcane conveying channel are provided with through holes whose lengths are distributed in the up and down directions at positions corresponding to the movable roller 3, and the left and right ends of the movable roller 3 respectively pass through the corresponding through holes and extend outward, and the movable roller 3 can move up and down along the through holes.

[0026] refer to Figures 1 to 4The first moving mechanism can be a telescopic cylinder structure or a screw nut structure. Preferably, the first moving mechanism includes a first screw rod 2, a first motor 1 and a first moving platform 4. Two parallel first screw rods 2 are provided on the outside of each through hole, and each first screw rod 2 is connected to the sugarcane conveying channel in a rotatable manner. The first motor 1 is installed on the sugarcane conveying channel, and the first motor 1 corresponds to the first screw rod 2 one by one. The rotating shaft of each first motor 1 is connected to the corresponding first screw rod 2 to drive the screw rod to rotate. A first moving platform 4 is provided between two adjacent first screw rods 2. The front and rear sides of each first moving platform 4 are provided with a first sleeve threadedly connected to the corresponding first screw rod 2, and the two ends of the movable roller 3 are respectively connected to the corresponding first moving platform 4 for rotation. By driving the four first screw rods 2 to rotate synchronously in the forward or reverse direction, the first sleeve can be driven up and down, thereby driving the first moving platform 4 to move up and down, and adjusting the distance between the movable roller 3 and the fixed roller 7.

[0027] refer to Figure 1 and Figure 3The power unit can be a motor structure or a structure such as a tensioning wheel and a chain. Preferably, the power unit is arranged on the left or right side of the sugarcane conveying channel. The power unit includes two first tensioning wheels 5, a second tensioning wheel 11, a chain 6, and an external power source. The two first tensioning wheels 5 are symmetrically distributed front and back, and the two first tensioning wheels 5 can move up and down synchronously with the movable roller 3, that is, the two first tensioning wheels 5 are installed on the first movable platform 4 and move up and down synchronously with the movable roller 3. The ends of the movable roller 3 are provided with a movable sprocket located between the two first tensioning wheels 5. The second tensioning wheel 11 is installed on the sugarcane conveying channel in a manner that allows it to move up and down and is located below between the two fixed rollers 7. The second tensioning wheel 11 is driven up and down by a second moving mechanism to ensure that the chain 6 is in a properly tensioned state. The ends of the two fixed rollers 7 are both provided with fixed sprockets. A chain 6 is wound around the outsides of two fixed sprockets, two first tensioning pulleys 5, and a second tensioning pulley 11. The lower end of the movable sprocket meshes with the chain 6, driving the fixed rollers 7 to rotate in the same direction and the movable rollers 3 to rotate in the opposite direction. An external power source is connected to one of the fixed rollers 7 to drive its rotation. This external power source can be a motor or a chain drive mechanism, connecting one of the leaf stripping rollers and one of the fixed rollers 7 in the sugarcane conveyor channel. This power is transmitted from the leaf stripping roller to the fixed roller 7, thereby driving the sugarcane tail cutting device. During operation, the two first tensioning wheels 5, the second tensioning wheel 11 and the chain 6 can be used to drive the two fixed rollers 7 to rotate backward and the movable roller 3 to rotate forward, thereby performing the tail cutting operation on the sugarcane. The structure is simple. In the process of moving the movable roller 3 up and down, the first tensioning wheel 5 also moves up and down synchronously with the movable roller 3, so that the chain 6 and the movable sprocket are always in a meshing state. The second moving mechanism also synchronously drives the second tensioning wheel 11 to move up and down with the movable roller 3, ensuring that the chain 6 is in a suitable tensioning state, thereby ensuring the smooth operation of the entire device.

[0028] refer to Figure 1 and Figure 3The second moving mechanism can be a telescopic cylinder structure, or a screw-nut structure. Preferably, the second moving mechanism includes two second screw rods 9, two second motors 10, and a second movable platform 8. The two second screw rods 9 are rotatably mounted on the sugarcane conveying channel and are arranged parallel to each other. They are located on either side of the second tensioning wheel 11. Both second motors 10 are mounted on the sugarcane conveying channel, and each end of the two second screw rods 9 is connected to a second motor 10. The second motors 10 drive the two second screw rods 9 to rotate synchronously. The second movable platform 8 is mounted between the two second screw rods 9. Second sleeves are threadedly connected to the corresponding second screw rods 9 on both sides of the second movable platform 8. The second tensioning wheel 11 is mounted on the second movable platform 8. The second motor 10 drives the two second screw rods to rotate synchronously, thereby driving the second sleeves and the second movable platform 8 to move up and down. This allows the height of the second tensioning wheel 11 to be adjusted, allowing it to move up and down synchronously with the movable roller 3, ensuring that the chain 6 is properly tensioned and the entire device operates smoothly.

[0029] refer to Figure 3 and Figure 4 The teeth of the toothed rubber plate 12 can be rectangular, trapezoidal, or bowling pin-shaped. Preferably, the teeth of the toothed rubber plate 12 are bowling pin-shaped, i.e., the tips of the teeth are relatively enlarged, increasing their weight and thereby increasing the impact force on the sugarcane during rotation. When the sugarcane slightly passes through the device, it is sheared by the impact forces from different directions, breaking at appropriate locations. The roots of the teeth are relatively thin, in order to reduce the sustained force on the sugarcane after contact and thus prevent a large number of sugarcane segments from breaking.

[0030] The sugarcane tail cutting mechanism of the present invention can adjust the distance between the movable roller 3 and the fixed roller 7 according to the variety and diameter of the sugarcane in the planting field, thereby adjusting the shearing force of the tail cutting, thereby avoiding the situation where the sugarcane is broken into several sections or cannot be cut due to excessive shearing force, and ensuring the tail cutting effect. When the sugarcane in the planting field is not seriously fallen and the front cutter is able to cut the sugarcane, the distance between the movable roller 3 and the fixed roller 7 can be increased, so that the sugarcane tail cutting mechanism does not perform the tail cutting work. Among them, the following formula is applied to the adjustment of the distance between the movable roller 3 and the fixed roller 7 and the position of the second tensioning wheel 11:

[0031]

[0032] Wherein: h1 is the vertical distance between the movable roller 3 and the fixed roller 7, L is the length of the chain 6, and s is the moving distance of the second tensioning wheel 11.

[0033] The foregoing descriptions of specific exemplary embodiments of the present invention are for purposes of illustration and description. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is apparent that many modifications and variations are possible in light of the foregoing teachings. The exemplary embodiments have been selected and described for the purpose of explaining the specific principles of the present invention and their practical application, thereby enabling those skilled in the art to realize and utilize a variety of exemplary embodiments of the present invention and various options and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A lodging sugarcane tail cutting mechanism with adjustable spacing, wherein the sugarcane tail cutting mechanism is installed in a sugarcane conveying channel, wherein the sugarcane conveying channel is distributed along the front-to-back direction, and wherein: The sugarcane tail cutting mechanism comprises: Two fixed rollers are rotatably mounted on the sugarcane conveying channel, and the two fixed rollers are spaced apart from each other in a front-to-rear manner, with the axis of each fixed roller distributed in the left-right direction; A movable roller is rotatably mounted on the sugarcane conveying channel, with the axis of the movable roller extending in the left-right direction and the movable roller located above the fixed roller; the two fixed rollers and the movable roller are arranged in a herringbone shape; and the movable roller is capable of moving up and down; a first moving mechanism, which is installed on the sugarcane conveying channel and is used to drive the movable roller to move up and down; Toothed rubber plates, each of the fixed rollers is provided with a plurality of evenly distributed toothed rubber plates along its circumferential direction, and the movable roller is also provided with a plurality of evenly distributed toothed rubber plates along its circumferential direction; and A power device is used to drive the two fixed rollers and the movable roller to rotate; wherein the rotation direction of the movable roller is opposite to the rotation direction of the fixed roller.

2. The lodging sugarcane tail cutting mechanism with adjustable spacing according to claim 1 is characterized in that: The left and right side walls of the sugarcane conveying channel are provided with through holes whose lengths are distributed in the up and down directions at positions corresponding to the movable rollers. The left and right ends of the movable rollers respectively pass through the corresponding through holes and extend outwards. The movable rollers can move up and down along the through holes.

3. The lodging sugarcane tail cutting mechanism with adjustable spacing according to claim 2, characterized in that: The first moving mechanism includes: A first screw rod, wherein two first screw rods are provided on the outer side of each through hole and are parallel to each other, and each first screw rod is rotatably connected to the sugarcane conveying channel; a first motor, wherein the first motor is mounted on the sugarcane conveying channel, and the first motor corresponds to the first screw rod in a one-to-one manner, and a rotating shaft of each first motor is connected to a corresponding first screw rod; and A first movable platform is provided between two adjacent first screw rods, and the front and rear sides of each first movable platform are provided with a first sleeve threadedly connected to the corresponding first screw rod; the two ends of the movable roller are respectively rotatably connected to the corresponding first movable platform.

4. The lodging sugarcane tail cutting mechanism with adjustable spacing according to claim 1, characterized in that: The power device is arranged on the left or right side of the sugarcane conveying channel; wherein the power device includes: Two first tensioning wheels, which are symmetrically distributed front to back and can move up and down synchronously with the movable roller; a movable sprocket is provided at the end of the movable roller and is located between the two first tensioning wheels; a second tensioning wheel mounted on the sugarcane conveying passage in a manner capable of moving up and down and located below between the two fixed rollers; the second tensioning wheel is driven to move up and down by a second moving mechanism; fixed sprockets are provided at the ends of the two fixed rollers; a chain wound around the outer sides of the two fixed sprockets, the two first tensioning wheels, and the second tensioning wheel; the lower end of the movable sprocket is meshed with the chain; and An external power source is connected to one of the fixed rollers and is used to drive the fixed roller to rotate.

5. The lodging sugarcane tail cutting mechanism with adjustable spacing according to claim 4 is characterized in that: The second moving mechanism includes: two second screw rods, the two second screw rods being rotatably mounted on the sugarcane conveying channel and being distributed parallel to each other, and the two second screw rods being respectively located on the front and rear sides of the second tensioning wheel; two second motors, both of which are mounted on the sugarcane conveying channel, and each end of the two second screw rods is connected to one of the second motors; and The second movable platform is installed between the two second screw rods, and the front and rear sides of the second movable platform are both provided with second sleeves threadedly connected to the corresponding second screw rods; the second tensioning wheel is installed on the second movable platform.

6. The lodging sugarcane tail cutting mechanism with adjustable spacing according to claim 1, characterized in that: The teeth of the toothed rubber plate are in the shape of bowling pins.

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