A harvester conveyor belt

Abstract

This utility model discloses a harvester conveyor belt, including: a conveyor bin, with a main shaft and a driven shaft arranged parallel to each other at both ends of the inner cavity of the conveyor bin, one end of the main shaft extending to the outside of the conveyor bin and fixed with a first motor, main sprockets fixed at both ends of the main shaft, and driven sprockets fixed at both ends of the driven shaft, sleeves fitted on the shaft bodies of the main shaft and the driven shaft, and a protective plate fixed on one side of the sleeve. This device integrates the driven shaft with the cutting mechanism through an L-shaped mounting plate: when adjusting the tension of the conveyor chain rake, the driven shaft and the third shaft move synchronously, and the sleeve is fixed to the conveyor bin and the protective plate, that is, stationary relative to the conveyor bin, which avoids the generation of new gaps between the main shaft and the anti-entanglement components (protective plate, sleeve), and ensures that the cutting distance between the blade and the blade holder remains unchanged, completely eliminating the technical pain point of "adjustment causing new entanglement risk".

Description

Technical Field

[0001] This utility model relates to the field of harvester technology, specifically a harvester conveyor belt. Background Technology

[0002] In combine harvesters, the conveying system is responsible for transporting the crop harvested by the header to the threshing and cleaning system. During operation, the crop stalks of its core component, the conveyor chain harrow, are prone to becoming entangled in the shafts and sprockets at both ends, leading to increased rotational resistance, higher power consumption, and even equipment jamming or damage. To address this issue, existing technologies often incorporate anti-entanglement structures within the conveyor compartment.

[0003] A search revealed that patent CN222840110U discloses an anti-tangling structure for a small harvester conveying device. By setting two independent first and second anti-tangling plates, a perforation is formed between the first and second anti-tangling plates, allowing the grain that is caught above to fall to the bottom in time and be conveyed by the chain rake. At the same time, the first and second anti-tangling plates are respectively fitted with the first and second main shafts with clearance, thereby more effectively preventing the stalks of the grain from being unable to pass through the gap and getting tangled on the main shaft, achieving a good anti-tangling effect and improving the conveying efficiency of the conveying bin.

[0004] However, this solution still has significant shortcomings in practical applications: its tension adjustment mechanism is achieved by moving the second main shaft, and the position of the second anti-tangling plate also needs to be adjusted accordingly. If the positions of these two components are not adjusted properly or are not synchronized, unexpected assembly gaps can easily be generated between the anti-tangling plate and the moved main shaft. These gaps can become new risk points for stalk intrusion and tangling. To address this, we propose a harvester conveyor belt. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: a harvester conveyor belt, comprising: a conveyor bin, wherein a main rotating shaft and a driven rotating shaft are respectively provided at both ends of the inner cavity of the conveyor bin, a first motor is fixedly fixed at one end of the main rotating shaft to the outside of the conveyor bin, a main sprocket is fixed at both ends of the main rotating shaft, a driven sprocket is fixed at both ends of the driven rotating shaft, a sleeve is sleeved on the shaft body of the main rotating shaft and the driven rotating shaft, a protective plate is fixed on one side of the sleeve, a sliding groove is provided at the lower end of the conveyor bin, an L-shaped mounting plate is slidably connected to the outside of the sliding groove, and the rear of the L-shaped mounting plate... An adjusting bolt is fixedly connected to the end of the main shaft, and the end of the adjusting bolt is fixed to the outer side of the conveying chamber through a connecting seat. A slider is fixed in the middle of the L-shaped mounting plate, and the slider is rotatably connected to both ends of the driven shaft through bearings. Two sets of cutting mechanisms are arranged between the main shaft and the driven shaft. The cutting mechanism includes a third shaft that is rotatably connected to the inner side of the L-shaped mounting plate through a bearing. One end of the third shaft extends to the outer side of the L-shaped mounting plate and a second motor is fixed thereon. An installation roller is fixed to the shaft body of the third shaft, and several sets of blades are fixed to the periphery of the installation roller by bolts.

[0006] As a preferred embodiment of this utility model, the outer diameter of the main sprocket and the driven sprocket matches the outer diameter of the sleeve, and the main sprocket, the driven sprocket and the sleeve are clearance-fitted.

[0007] In a preferred embodiment of this invention, the sleeve is clearance-fitted with both the main shaft and the driven shaft, and the sleeve is fixed to the side wall of the conveying chamber, making it stationary relative to the conveying chamber.

[0008] As a preferred technical solution of this utility model, the two sets of sleeves are fixed with a knife holder by bolts on their facing surfaces, and the knife holder and the blade are positioned to match.

[0009] As a preferred technical solution of this utility model, the two sets of third rotating axes rotate in the direction of the sleeve on the same side, and the cutting edge of the blade turns in the direction of the tool holder on the same side, thereby forming a shearing motion between the blade and the tool holder.

[0010] As a preferred embodiment of this utility model, a conveying chain rake is meshed with the main sprocket and the slave sprocket, and the bottom surface of the upper section of the conveying chain rake slides in contact with the arc-shaped surface of the protective plate.

[0011] In a preferred embodiment of this invention, the cross-section of the slider is adapted to the cross-section of the groove, and the slider and the groove are slidably connected.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) Solve the core defects of the existing technology and eliminate new risks of entanglement: This device integrates the rotating shaft and the cutting mechanism through an L-shaped mounting plate: When adjusting the tension of the conveyor chain rake, the rotating shaft and the third rotating shaft move synchronously, and the sleeve is fixed to the conveying chamber and the protective plate, that is, it is stationary relative to the conveying chamber. This avoids the generation of new gaps between the main shaft and the anti-entanglement components (protective plate, sleeve), and ensures that the cutting distance between the blade and the blade holder remains unchanged, thus completely eliminating the technical pain point of "adjustment causing new entanglement risks".

[0014] (2) Dual protection of anti-entanglement and cutting to improve operational stability: The device adopts a pre-control anti-entanglement design of "protective plate support and isolation" to reduce the contact between stems and easily entangled parts from the source of conveying; at the same time, it is equipped with an active cutting mechanism of "blade-knife holder shearing" to clean up a small number of entangled stems that have been missed in time, forming a dual anti-entanglement system of "pre-control + remediation", which greatly reduces the probability of entanglement of conveyor chain rake, main shaft and driven shaft, avoids equipment jamming or damage caused by entanglement, and improves the long-term operational stability of the conveyor belt.

[0015] (3) Tension adjustment is convenient and efficient, reducing the difficulty of operation: The L-shaped mounting plate can be driven to move synchronously from the rotating shaft and the cutting mechanism by simply rotating the adjusting bolt. There is no need to adjust multiple parts separately, which simplifies the tension adjustment process. Moreover, the matching design of the slider and the slide groove ensures the stability of the L-shaped mounting plate when it moves, avoids the displacement of parts during the adjustment process, reduces the technical threshold for operators, and improves the convenience of equipment maintenance. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a three-dimensional structural diagram of the main sprocket of this utility model.

[0021] In the diagram: 1. Conveying bin; 2. First motor; 3. Main shaft; 4. Slave shaft; 5. Main sprocket; 6. Slave sprocket; 7. Sleeve; 8. Protective plate; 9. Cutting mechanism; 10. Tool holder; 11. Third shaft; 12. Mounting roller; 13. Blade; 14. Second motor; 15. Conveying chain rake; 16. L-shaped mounting plate; 17. Adjusting bolt; 18. Slide groove; 19. Sliding block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example

[0024] Please see Figure 1-4 This utility model provides the following technical solution: a harvester conveyor belt, comprising: a conveyor chamber 1, with a main rotating shaft 3 and a driven rotating shaft 4 parallel to each other respectively arranged at both ends of the inner cavity of the conveyor chamber 1; a first motor 2 is fixedly fixed at one end of the main rotating shaft 3 to the outside of the conveyor chamber 1; a main sprocket 5 is fixed at both ends of the main rotating shaft 3; a driven sprocket 6 is fixed at both ends of the driven rotating shaft 4; a sleeve 7 is fitted onto the shaft body of the main rotating shaft 3 and the driven rotating shaft 4; a protective plate 8 is fixed to one side of the sleeve 7; a sliding groove 18 is opened at the lower end of the conveyor chamber 1; an L-shaped mounting plate 16 is slidably connected to the outside of the sliding groove 18; and the rear end of the L-shaped mounting plate 16 is fixedly connected to... There is an adjusting bolt 17, the end of which is fixed to the outside of the conveying chamber 1 via a connecting seat. A slider 19 is fixed in the middle of the L-shaped mounting plate 16. The slider 19 is rotatably connected to both ends of the driven shaft 4 via bearings. Two sets of cutting mechanisms 9 are provided between the main shaft 3 and the driven shaft 4. The cutting mechanism 9 includes a third shaft 11 rotatably connected to the inside of the L-shaped mounting plate 16 via bearings. One end of the third shaft 11 extends to the outside of one side of the L-shaped mounting plate 16 and a second motor 14 is fixed thereon. An installation roller 12 is fixed to the shaft body of the third shaft 11. Several sets of blades 13 are fixed to the periphery of the installation roller 12 via bolts.

[0025] To ensure the assembly coordination between the main sprocket 5, the driven sprocket 6, and the sleeve 7, and to avoid jamming or excessive gaps causing stem intrusion during operation due to size mismatch, while ensuring the flexibility of the main shaft 3 and the driven shaft 4 during rotation through clearance fit without generating additional frictional resistance, in this embodiment, as a preferred technical solution of the present invention, the outer diameter of the main sprocket 5 and the driven sprocket 6 matches the outer diameter of the sleeve 7, and the main sprocket 5, the driven sprocket 6, and the sleeve 7 are clearance fitted.

[0026] In order to ensure that the main shaft 3 and the driven shaft 4 can rotate freely inside the sleeve 7, and to keep the sleeve 7 stationary by fixing it to the side wall of the conveying bin 1 and the protective plate 8, thereby stably supporting the protective plate 8 and continuously playing the role of isolating and preventing the grain stalks from getting tangled, and to prevent the sleeve 7 from losing its anti-tangling effect as the shaft rotates, in this embodiment, as a preferred technical solution of the present invention, the sleeve 7 is clearance-fitted with the main shaft 3 and the driven shaft 4, and the sleeve 7 is fixed to the side wall of the conveying bin 1 so that it is stationary relative to the conveying bin 1.

[0027] In order to provide a stable shearing engagement component for the blade 13, the blade holder 10 and the blade 13 are matched to ensure that the blade 13 can accurately form a shearing action with the blade holder 10 when rotating, so as to avoid cutting failure due to position deviation and thus efficiently cut the entangled stem. In this embodiment, as a preferred technical solution of the present invention, the blade holder 10 is fixed to the facing side of the two sets of sleeves 7 by bolts, and the blade holder 10 and the blade 13 are matched.

[0028] In order to create an effective shearing motion between the blade 13 and the blade holder 10, and to quickly cut the stem wrapped around the sleeve 7 using shearing force, rather than simply relying on the rotation of the blade 13 to cut, thereby improving cutting efficiency and cleaning effect and ensuring that the wrapped material can be completely cut off, in this embodiment, as a preferred technical solution of the present invention, the two sets of third rotating shafts 11 rotate towards the sleeve 7 on the same side, and the cutting edge of the blade 13 turns towards the blade holder 10 on the same side, thereby creating a shearing motion between the blade 13 and the blade holder 10.

[0029] In order to achieve stable grain conveying through the conveyor chain rake 15, and at the same time to form a tight support for the grain stalk by means of the protective plate 8 sliding against the bottom surface of the upper section of the conveyor chain rake 15, completely isolating the stalk from the easily tangled parts, and minimizing the probability of the stalk falling or coming into contact with the easily tangled parts, in this embodiment, as a preferred technical solution of the present invention, the main sprocket 5 and the slave sprocket 6 are meshed and connected to the conveyor chain rake 15, and the bottom surface of the upper section of the conveyor chain rake 15 slides against the arc-shaped surface of the protective plate 8.

[0030] To ensure that the slider 19 can slide smoothly within the groove 18, avoiding deviation or jamming during sliding, and thus ensuring the stability of the L-shaped mounting plate 16 driving the rotating shaft 4 and cutting mechanism 9, and ensuring precise tension adjustment of the conveyor chain rake 15 and constant cutting spacing, in this embodiment, as a preferred technical solution of the present invention, the cross-section of the slider 19 is adapted to the cross-section of the groove 18, and the slider 19 and the groove 18 are slidably connected. In summary, with the above-mentioned technical solution of the present invention...

[0031] Working Principle: Grain Conveying and Anti-Entanglement Pre-control Stage: After the device starts, the first motor 2 drives the main shaft 3 to rotate. The main sprockets 5 at both ends of the main shaft 3 drive the driven shaft 4 to rotate synchronously through the meshing conveyor chain rake 15, forming continuous conveying power. After the grain enters the conveying bin 1, it is conveyed upward by the upper section of the conveyor chain rake 15 to the next working process. During this process, the protective plate 8 fixed to one side of the sleeve 7 inside the conveying bin 1 slides against the bottom surface of the upper section of the conveyor chain rake 15, providing support for the grain stalks near the sleeves 7 at both ends of the conveying bin 1, physically isolating the stalks from easily entangled components such as the sleeves 7, main shaft 3, and driven shaft 4, reducing the risk of entanglement from the source.

[0032] Cutting and cleaning entangled stems: If a small amount of soft stems fall from the gaps in the conveyor chain rake 15 and are carried back to the sleeve 7 area by its return end, causing entanglement, the second motor 14 is activated. The second motor 14 drives the third rotating shaft 11 to rotate, and the mounting roller 12 fixed to the shaft of the third rotating shaft 11 rotates synchronously with it, thereby driving the blades 13 on the periphery of the mounting roller 12 to rotate. Since both sets of third rotating shafts 11 rotate towards the sleeve 7 on the same side, and the cutting edge of the blade 13 turns towards the blade holder 10 fixed on the sleeve 7 on the same side, a shearing motion is formed between the blade 13 and the blade holder 10, which can quickly cut the stems entangled on the sleeve 7, realize timely cleaning of the entanglement, and avoid increased rotational resistance or equipment jamming.

[0033] Tension adjustment stage of conveyor chain rake 15: When the conveyor chain rake 15 becomes loose due to long-term use and needs to be adjusted, rotate the adjusting bolt 17 fixed at the rear end of the L-shaped mounting plate 16. Since the end of the adjusting bolt 17 is fixed to the outside of the conveyor chamber 1 through the connecting seat, rotating the adjusting bolt 17 can drive the L-shaped mounting plate 16 to slide back and forth along the slide groove 18 at the lower end of the conveyor chamber 1. When the L-shaped mounting plate 16 moves, on the one hand, the slider 19 fixed in the middle drives the driven shaft 4 to move synchronously, changing the distance between the main shaft 3 and the driven shaft 4, thereby realizing the tension adjustment of the conveyor chain rake 15; on the other hand, the L-shaped mounting plate 16 synchronously drives the second motor 14, the third shaft 11 and other cutting mechanism 9 components mounted on it to move, ensuring that the relative position of the driven shaft 4 and the third shaft 11 remains unchanged, thereby keeping the cutting distance between the blade 13 and the blade holder 10 stable, without the need for individual adjustment, and avoiding a decrease in cutting efficiency after adjustment. The motor models mentioned above are: 61K120RGN-CF and 51K60RGU-CMF. These motor models are for reference only and should be chosen based on the specific work requirements.

[0034] Finally, it should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A harvester conveyor belt, characterized in that, include: The conveying chamber (1) has a main rotating shaft (3) and a driven rotating shaft (4) that are parallel to each other at both ends of its inner cavity. One end of the main rotating shaft (3) extends to the outside of the conveying chamber (1) and is fixed with a first motor (2). The two ends of the main rotating shaft (3) are fixed with main sprockets (5), and the two ends of the driven rotating shaft (4) are fixed with driven sprockets (6). The shafts of the main rotating shaft (3) and the driven rotating shaft (4) are fitted with sleeves (7). A protective plate (8) is fixed on one side of the sleeve (7). A groove (18) is opened at the lower end of the conveying chamber (1). An L-shaped mounting plate (16) is slidably connected to the outside of the groove (18). An adjusting bolt (17) is fixedly connected to the rear end of the L-shaped mounting plate (16). The end of the bolt (17) is fixed to the outside of the conveying chamber (1) via a connecting seat. A slider (19) is fixed in the middle of the L-shaped mounting plate (16). The slider (19) is rotatably connected to both ends of the driven shaft (4) via bearings. Two sets of cutting mechanisms (9) are provided between the main shaft (3) and the driven shaft (4). The cutting mechanism (9) includes a third shaft (11) rotatably connected to the inside of the L-shaped mounting plate (16) via bearings. One end of the third shaft (11) extends to the outside of the L-shaped mounting plate (16) on one side and a second motor (14) is fixed thereon. An installation roller (12) is fixed to the shaft of the third shaft (11). Several sets of blades (13) are fixed to the periphery of the installation roller (12) by bolts.

2. The harvester conveyor belt according to claim 1, characterized in that: The outer diameter of the main sprocket (5) and the driven sprocket (6) matches the outer diameter of the sleeve (7), and there is a clearance fit between the main sprocket (5), the driven sprocket (6), and the sleeve (7).

3. The harvester conveyor belt according to claim 1, characterized in that: The sleeve (7) is clearance-fitted with both the main rotating shaft (3) and the slave rotating shaft (4), and the sleeve (7) is fixed to the side wall of the conveying chamber (1), so that it is stationary relative to the conveying chamber (1).

4. The harvester conveyor belt according to claim 1, characterized in that: The two sets of sleeves (7) are fixed with a knife holder (10) on their opposite sides by bolts, and the knife holder (10) is in position with the blade (13).

5. The harvester conveyor belt according to claim 4, characterized in that: The two sets of third rotating shafts (11) rotate toward the sleeve (7) on the same side, and the cutting edge of the blade (13) turns toward the tool holder (10) on the same side, thereby forming a shearing motion between the blade (13) and the tool holder (10).

6. The harvester conveyor belt according to claim 1, characterized in that: The main sprocket (5) and the slave sprocket (6) are meshed with a conveyor chain rake (15), and the bottom surface of the upper section of the conveyor chain rake (15) slides in contact with the arc-shaped surface of the protective plate (8).

7. The harvester conveyor belt according to claim 1, characterized in that: The cross section of the slider (19) is adapted to the cross section of the groove (18), and the slider (19) and the groove (18) are slidably connected.

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