Harvester tooth shifting mechanism and harvester

Abstract

The utility model aims to provide a harvester shifting tooth mechanism and a harvester. The harvester shifting tooth mechanism comprises a front cover plate, a rear cover plate, a chain A, a rotating wheel A, a rotating wheel B and shifting teeth A, the front cover plate and the rear cover plate are oppositely arranged and connected through the connecting plate, and transmission grooves are formed in the outer side faces of the front cover plate and the rear cover plate respectively. Rotating wheels A and rotating wheels B are respectively arranged at the left and right ends of the front cover plate and the rear cover plate; the chains A are wound on the rotating wheel A and the rotating wheel B, and the chains A on the two sides pass through the front cover plate and the rear cover plate respectively; a plurality of groups of shifting teeth A are uniformly arranged on the chain A at intervals; the shifting teeth A can rotate based on the rotating shaft; a baffle block and a roller are arranged at the rear end of the shifting tooth A; the inner side wall of the front cover plate is in contact with the inner side surfaces of the rollers and the stop blocks; the shifting teeth A are perpendicular to the chain A and extend out of the transmission groove; a distance B is reserved between the inner side wall of the rear cover plate and the inner side faces of the rolling wheels and the check blocks, and the shifting teeth A can be retracted into the transmission grooves in the reverse moving direction of the chain A. According to the utility model, the harvester can be miniaturized and lightened.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically to a harvester tooth-shifting mechanism and a harvester. Background Technology

[0002] Sugarcane is one of the important economic crops in southern my country. The sugar content of sugarcane stalks is as high as 55%-70%, and the sugar produced from it plays a vital role in our production and daily life. In addition, the bagasse after processing is also a good raw material for brewing and papermaking. Based on a sugarcane yield of 4 tons per mu (approximately 0.16 acres), the annual production of raw sugarcane exceeds 100 million tons, and the total sugar production reaches 14 million tons per year.

[0003] Because my country's sugarcane growing areas are located in hilly regions, are scattered, and have complex terrain, large-scale cutting-type sugarcane harvesters are not suitable for widespread use in my country, and their introduction costs are too high. Therefore, it is of great significance to develop a tooth-shifting mechanism that is more conducive to the application of small harvesters, and to develop smaller and lighter harvesters accordingly. Utility Model Content

[0004] This utility model aims to provide a harvester tooth-retracting mechanism and a harvester. This mechanism allows the tooth A to automatically retract after transmission is completed, under the reaction force of the contacted sugarcane or other objects. This effectively reduces the size of the tooth-retracting mechanism and the space required for its installation, thereby further miniaturizing and lightening the harvester. Simultaneously, this tooth A structure design effectively prevents sugarcane, sugarcane leaves, or other objects from being carried in when the chain A returns, thus avoiding damage to the transmission mechanism and power unit.

[0005] To solve the above problems, the technical solution of this utility model is as follows:

[0006] The harvester tooth-shifting mechanism includes a front cover plate, a rear cover plate, a chain A, a rotating wheel A, a rotating wheel B, and a tooth A;

[0007] The front cover plate and the rear cover plate are arranged opposite to each other and connected by a connecting plate; the outer side surfaces of the front cover plate and the rear cover plate are respectively provided with transmission grooves, and the left and right end faces of the front cover plate and the rear cover plate are both open structures.

[0008] The front cover plate and the rear cover plate are respectively provided with rotating wheels A and rotating wheels B on the outer sides of the left and right ends. Rotating wheels A or rotating wheels B are connected to the power device through a transmission mechanism.

[0009] The chain A is wound around the rotating wheel A and the rotating wheel B, and the chains A on both sides pass through the front cover plate and the rear cover plate respectively; multiple sets of teeth A are evenly arranged on the chain A, and when the chain A passes through the front cover plate or the rear cover plate, the front end of the teeth A can extend out from the transmission groove.

[0010] The rear part of the tooth A is mounted on the chain A via a pivot and can rotate based on the pivot; the rear ends of the tooth A are provided with extensions extending inward to the outside of the inner side of the chain A, and the rear ends of the extensions are provided with stops; the rear ends of the tooth A are provided with rollers; the stops are located on the rear side of the rollers in the direction of movement of the chain A.

[0011] The inner wall of the front cover plate contacts the roller and the inner side of the stop block, so that the shift tooth A cannot rotate forward or backward, and the shift tooth A extends out of the transmission groove perpendicular to the chain A.

[0012] The inner wall of the rear cover plate is spaced by a distance B from the inner side of the roller and the stop block. This distance B ensures that the stop block does not interfere with the rotation of the gear A, and the gear A can retract into the transmission groove in the opposite direction of the movement of the chain A.

[0013] The inner surface of the stop block coincides with the tangent corresponding to the innermost point of the outer circumference of the roller.

[0014] The tooth A includes a deflector plate and a side plate. Two sets of side plates are arranged in parallel. The front sides of the two sets of side plates are connected by the deflector plate. During installation, the deflector plate is located in front of the chain A in the direction of movement, and the lower edge of the deflector plate is close to the chain A, which can restrict the rotation of the tooth A from back to front.

[0015] The side plate is a right-angled triangle structure, with one right-angled side of the triangle connected to the lever plate, and the hypotenuse located on the rear side in the direction of chain A's movement.

[0016] The extension is located on the other right-angled side of the right triangle, behind the direction of movement of chain A.

[0017] Each side panel has a stop block on its extension, and a set of rollers is mounted on the front end of each side panel via an axle.

[0018] The rotating wheels A and B are respectively provided with circular top blocks on both sides. The outer circumference of the circular top blocks contacts the stop block and roller of the prying tooth A that passes through them, so that they cannot be retracted.

[0019] This utility model also discloses a sugarcane harvester that uses the above-mentioned harvester tooth-picking mechanism; it also includes a frame, a sugarcane distribution and support mechanism, a cutting mechanism, and a guide rod. The frame is located at the front of the harvester, and the sugarcane distribution and support mechanism, the cutting mechanism, the guide rod, and the harvester tooth-picking mechanism are all mounted on the frame.

[0020] The material distribution and sugarcane support mechanism is located at the front end of the frame, and the cutting mechanism is located below the rear end of the material distribution and sugarcane support mechanism. The harvester tooth mechanism and the guide rod are installed in the middle of the frame to form a conveying channel. The inlet of the conveying channel corresponds to the rear outlet of the material distribution mechanism, and the outlet of the conveying channel extends to the right side of the frame.

[0021] The middle and bottom of the frame are respectively equipped with a set of harvester tooth-picking mechanism and guide rod, forming a conveying channel. The two sets of conveying channels cooperate with each other.

[0022] The material distribution and sugarcane-supporting mechanism includes a material distribution rod, a large deflector wheel, and a transmission chain mechanism. Two sets of material distribution rods are installed on either side of the front end of the frame. The transmission chain mechanism is mounted on the frame at the rear end of the material distribution rods. The transmission chain mechanism includes a protective shell, chain B, deflector teeth B, a driven wheel, and a driving wheel. The driven wheel and driving wheel are respectively mounted on the frame via shafts. Chain B is wound around the driven wheel and driving wheel, and multiple sets of deflector teeth B are evenly spaced on chain B. The protective shell is located between the driven wheel and driving wheel, covering the top and bottom surfaces of chain B at this position. The deflector teeth B extend from grooves on the outer side of the protective shell.

[0023] The large dial wheel is mounted on a frame next to the transmission chain mechanism via a non-powered shaft, and multiple sets of actuating teeth are evenly spaced on the outer circumference of the large dial wheel; a feeding transmission channel is formed between the large dial wheel and the transmission chain mechanism;

[0024] Chain B rotates, causing the teeth B to move the sugarcane. The sugarcane contacts the teeth, causing the large wheel to rotate as well, thus transferring the sugarcane to the conveyor channel.

[0025] The conveying channel is not equipped with a guide rod at the front. The tooth A on the harvester tooth mechanism at the front of the conveying channel cooperates with the large wheel to form a transmission structure.

[0026] The sugarcane feeding and supporting mechanism can also adopt other common existing technologies in this field. For example, the sugarcane feeding and supporting mechanism can adopt the supporting mechanism described in Chinese Patent "201922375471.1".

[0027] The cutting mechanism can employ existing technologies commonly used in the field, such as the cutting device described in Chinese Patent "201921004463.X".

[0028] The working process of this utility model is as follows:

[0029] When the paddle tooth A enters the front cover plate, the roller and the stop block contact the inner wall of the front cover plate and are supported by the inner wall. The paddle tooth A extends vertically out of the transmission groove and paddles and transmits the sugarcane that has been guided by the harvester's sugarcane distribution and support mechanism and cut by the cutting mechanism until the sugarcane is discharged from the conveying channel. At this time, the roller and the stop block of the paddle tooth A are supported by the circular top block on the rotating wheel B and still maintain rigidity until they leave the rotating wheel B and enter the rear cover plate. At this time, the roller and the stop block of the paddle tooth A are not supported by the inner wall of the rear cover plate. The paddle tooth A automatically retracts when it contacts sugarcane, sugarcane leaves and other objects, and will not paddle or drive sugarcane leaves and other objects back, which can effectively prevent these objects from damaging the transmission mechanism and power unit and other equipment.

[0030] The beneficial effects of this utility model are as follows:

[0031] This utility model designs a special tooth-pulling mechanism. During conveying, the tooth A is rigid and can realize the prying conveying function. After the conveying is completed, the tooth A can retract when it encounters an object. This can effectively save the installation space and avoid bringing in objects such as sugarcane leaves, which could damage the transmission mechanism and power unit.

[0032] The harvester of this invention, by adopting this tooth-shifting mechanism, can further reduce its size and weight without affecting harvesting efficiency, making it very suitable for use in hilly areas and showing good application prospects. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the harvester tooth-shifting mechanism in Example 1;

[0034] Figure 2 This is a schematic diagram of the harvester tooth-shifting mechanism of Example 1 after removing the upper and lower cover plates.

[0035] Figure 3 This is a schematic diagram of the harvester in Example 1;

[0036] The names and numbers of the parts in the diagram are as follows:

[0037] 1-Front cover plate, 2-Rear cover plate, 3-Chain A, 4-Rotating wheel A, 5-Rotating wheel B, 6-Pulling tooth A, 7-Connecting plate, 8-Transmission groove, 9-Rotating shaft, 10-Extension, 11-Stop block, 12-Roller, 13-Pulling plate, 14-Side plate, 15-Circular top block, 16-Frame, 17-Splitting and sugarcane-supporting mechanism, 18-Cutting mechanism, 19-Guide rod, 20-Splitting rod, 21-Large pulsator, 22-Protective shell, 23-Chain B, 24-Pulling tooth B, 25-Non-powered shaft, 26-Pulling tooth. Detailed Implementation

[0038] The following description, in conjunction with the accompanying drawings, details the implementation methods and embodiments of this utility model and their working processes. Example 1

[0039] like Figure 1-2 As shown, the harvester tooth-shifting mechanism includes a front cover plate 1, a rear cover plate 2, a chain A3, a rotating wheel A4, a rotating wheel B5, and a tooth A6.

[0040] The front cover plate 1 and the rear cover plate 2 are arranged opposite to each other and connected by a connecting plate 7; the outer surfaces of the front cover plate 1 and the rear cover plate 2 are respectively provided with transmission grooves 8, and the left and right end faces of the front cover plate 1 and the rear cover plate 2 are both open structures.

[0041] The front cover plate 1 and the rear cover plate 2 are respectively provided with rotating wheels A4 and B5 on the outer sides of the left and right ends. Rotating wheels A4 or B5 are connected to the power device through a transmission mechanism.

[0042] The chain A3 is wound around the rotating wheel A4 and the rotating wheel B5. The chains A3 on both sides pass through the front cover plate 1 and the rear cover plate 2 respectively. Multiple sets of teeth A6 are evenly arranged on the chain A3. When the chain A3 passes through the front cover plate 1 or the rear cover plate 2, the front end of the teeth A6 can extend out from the transmission groove 8.

[0043] The rear part of the shift tooth A6 is mounted on the chain A3 via a pivot 9 and can rotate based on the pivot 9. The rear ends of the shift tooth A6 have extensions 10 extending inward beyond the inner side of the chain A3 on both sides, with a stop block 11 at the rear end of each extension 10. The rear end of the shift tooth A6 has a roller 12. The stop block 11 is located behind the roller 12 in the direction of chain A3 movement. Each side plate 14 has a stop block 11 on its extension 10, and a set of rollers 12 are mounted on the front end of each side plate 14 via an axle. The inner surface of the stop block 11 coincides with the innermost point of the outer circumference of the roller 12.

[0044] The inner wall of the front cover plate 1 contacts the roller 12 and the inner side of the stop block 11, so that the shift tooth A6 cannot rotate forward or backward, and the shift tooth A6 extends out of the transmission groove 8 perpendicular to the chain A3.

[0045] The inner wall of the rear cover plate 2 is spaced by a gap B with the inner side of the roller 12 and the stop block 11. This gap B ensures that the stop block 11 will not interfere with the rotation of the gear A6, and the gear A6 can retract into the transmission groove 8 in the opposite direction of the movement of the chain A3.

[0046] The tooth A6 includes a shift plate 13 and a side plate 14. Two sets of side plates 14 are arranged in parallel. The front sides of the two sets of side plates 14 are connected by the shift plate 13. During installation, the shift plate 13 is located in front of the chain A3 in the direction of movement, and the lower edge of the shift plate 13 is close to the chain A3, which can restrict the rotation of the tooth A6 from back to front.

[0047] The side plate 14 is a right-angled triangle structure, with one right-angled side connected to the lever plate 13, and the hypotenuse located on the rear side of the chain A3 in the direction of movement. The extension 10 is located on the other right-angled side of the right-angled triangle, also on the rear side of the chain A3 in the direction of movement.

[0048] The rotating wheels A4 and B5 are respectively provided with circular top blocks 15 on both sides. The outer circumference of the circular top blocks 15 contacts the stop block 11 and roller 12 of the prying teeth A6 that pass through them, so that they cannot be retracted. Example 2

[0049] like Figure 3 As shown, the sugarcane harvester uses the harvester tooth-picking mechanism of Embodiment 1; it also includes a frame 16, a sugarcane distribution and support mechanism 17, a cutting mechanism 18, and a guide rod 19. The frame 16 is located at the front of the harvester, and the sugarcane distribution and support mechanism 17, the cutting mechanism 18, the guide rod 19, and the harvester tooth-picking mechanism are all mounted on the frame 16.

[0050] The material distribution and sugarcane support mechanism 17 is located at the front end of the frame 16, and the cutting mechanism 18 is located below the rear end of the material distribution and sugarcane support mechanism 17. The harvester tooth mechanism and the guide rod 19 are installed in the middle of the frame 16 to form a conveying channel. The inlet of the conveying channel corresponds to the rear outlet of the material distribution mechanism, and the outlet of the conveying channel extends to the right side of the frame.

[0051] A set of harvester tooth-picking mechanism and guide rod 19 are respectively provided in the middle and bottom of the frame 16, and the two sets of conveying channels cooperate with each other.

[0052] The material distribution and sugarcane-supporting mechanism 17 includes a material distribution rod 20, a large deflector wheel 21, and a transmission chain mechanism. The material distribution rod 20 has two sets, which are respectively installed on both sides of the front end of the frame 16. The transmission chain mechanism is located on the frame 16 and is located at the rear end of the material distribution rod 20. The transmission chain mechanism includes a protective shell 22, a chain B23, deflector teeth B24, a driven wheel, and a driving wheel. The driven wheel and the driving wheel are respectively installed on the frame via shafts. The chain B23 is wound around the driven wheel and the driving wheel. Multiple sets of deflector teeth B24 are evenly spaced on the chain B23. The protective shell 22 is located between the driven wheel and the driving wheel, covering the top and bottom surfaces of the chain B23 at this position. The deflector teeth B24 extend from the grooves on the outer side of the protective shell 22.

[0053] The large dial wheel 21 is mounted on the frame 16 next to the transmission chain mechanism via a non-powered shaft 25. Multiple sets of actuating teeth 26 are evenly spaced on the outer circumference of the large dial wheel 21. A feeding transmission channel is formed between the large dial wheel 21 and the transmission chain mechanism.

[0054] The chain B23 rotates, causing the teeth B24 to move the sugarcane. The sugarcane contacts the teeth 26, causing the large wheel 21 to rotate as well, thereby transferring the sugarcane to the conveying channel.

[0055] The conveying channel is not equipped with a guide rod 19 at the front. The tooth A6 on the harvester tooth mechanism at the front of the conveying channel cooperates with the large tooth wheel 21 to form a transmission structure.

Claims

1. A harvester tooth-shifting mechanism, comprising a front cover plate (1), a rear cover plate (2), a chain A (3), a rotating wheel A (4), a rotating wheel B (5), and a tooth A (6), characterized in that: The front cover plate (1) and the rear cover plate (2) are arranged opposite to each other and connected by a connecting plate (7); the outer surfaces of the front cover plate (1) and the rear cover plate (2) are respectively provided with transmission grooves (8), and the left and right end faces of the front cover plate (1) and the rear cover plate (2) are both open structures. The front cover plate (1) and the rear cover plate (2) are respectively provided with rotating wheels A (4) and rotating wheels B (5) on the outer sides of the left and right ends. The rotating wheels A (4) or rotating wheels B (5) are connected to the power device through the transmission mechanism. The chain A (3) is wound around the rotating wheel A (4) and the rotating wheel B (5), and the chains A (3) on both sides pass through the front cover plate (1) and the rear cover plate (2) respectively; multiple sets of teeth A (6) are evenly arranged on the chain A (3), and when the chain A (3) passes through the front cover plate (1) or the rear cover plate (2), the front end of the teeth A (6) can extend out from the transmission groove (8); The rear part of the pawl A (6) is mounted on the chain A (3) via a pivot (9) and can rotate based on the pivot (9); the rear ends of the pawl A (6) are provided with extensions (10) extending inward to the inner side of the chain A (3), and the rear ends of the extensions (10) are provided with stops (11); the rear ends of the pawl A (6) are provided with rollers (12); the stops (11) are located on the rear side of the rollers (12) in the direction of movement of the chain A (3); The inner wall of the front cover plate (1) contacts the roller (12) and the inner side of the stop block (11), so that the tooth A (6) cannot rotate forward or backward, and the tooth A (6) extends out of the transmission groove (8) perpendicular to the chain A (3); The inner wall of the rear cover plate (2) is spaced by a gap B with the inner side of the roller (12) and the stop (11). This gap B ensures that the stop (11) will not interfere with the rotation of the gear A (6), and the gear A (6) can retract into the transmission groove (8) in the opposite direction of the movement of the chain A (3).

2. The harvester tooth-shifting mechanism as described in claim 1, characterized in that: The inner surface of the stop (11) coincides with the tangent corresponding to the innermost point of the outer circumference of the roller (12).

3. The harvester tooth-shifting mechanism as described in claim 1, characterized in that: The tooth A (6) includes a deflector plate (13) and a side plate (14). Two sets of side plates (14) are arranged in parallel. The front sides of the two sets of side plates (14) are connected by the deflector plate (13). During installation, the deflector plate (13) is located in front of the chain A (3) in the direction of movement. The lower edge of the deflector plate (13) is close to the chain A (3), which can restrict the rotation of the tooth A (6) from back to front.

4. The harvester tooth-shifting mechanism as described in claim 3, characterized in that: The side plate (14) is a right triangle structure. One right-angled side of the right triangle is connected to the lever plate (13), and the hypotenuse is located on the rear side of the moving direction of the chain A (3). The extension (10) is located on the other right-angled side of the right triangle, behind the direction of movement of chain A (3).

5. The harvester tooth-shifting mechanism as described in claim 4, characterized in that: Each side plate (14) has a stop (11) on its extension (10), and a set of rollers (12) are provided on the front end of each side plate (14) via a wheel axle.

6. The harvester tooth-shifting mechanism as described in claim 1, characterized in that: The rotating wheels A (4) and B (5) are respectively provided with circular top blocks (15) on both sides. The outer circumference of the circular top blocks (15) contacts the stop block (11) and roller (12) of the paddle tooth A (6) that passes through it, so that it cannot be retracted.

7. A sugarcane harvester, employing the harvester tooth-shifting mechanism as described in any one of claims 1-6, characterized in that: It also includes a frame (16), a sugarcane distribution and support mechanism (17), a cutting mechanism (18), and a guide rod (19). The frame (16) is located at the front of the harvester. The sugarcane distribution and support mechanism (17), the cutting mechanism (18), the guide rod (19), and the harvester tooth-shifting mechanism are all installed on the frame (16). The material distribution and sugarcane support mechanism (17) is located at the front end of the frame (16), and the cutting mechanism (18) is located below the rear end of the material distribution and sugarcane support mechanism (17). The harvester tooth mechanism and the guide rod (19) are installed in the middle of the frame (16) to form a conveying channel. The inlet of the conveying channel corresponds to the rear outlet of the material distribution mechanism, and the outlet of the conveying channel extends to the right side of the frame.

8. The sugarcane harvester as described in claim 7, characterized in that: A set of harvester tooth-picking mechanism and guide rod (19) are respectively provided in the middle and bottom of the frame (16), and the two sets of conveying channels form an upper and lower cooperation.

9. The sugarcane harvester as described in claim 7, characterized in that: The material distribution and sugarcane support mechanism (17) includes a material distribution rod (20), a large dial wheel (21), and a transmission chain mechanism. The material distribution rod (20) has two sets, which are respectively installed on both sides of the front end of the frame (16). The transmission chain mechanism is located on the frame (16) and is located at the rear end of the material distribution rod (20). The transmission chain mechanism includes a protective shell (22), a chain B (23), a tooth B (24), a driven wheel, and a driving wheel. The driven wheel and the driving wheel are respectively installed on the frame through shafts. The chain B (23) is wrapped around the driven wheel and the driving wheel. Multiple sets of teeth B (24) are evenly spaced on the chain B (23). The protective shell (22) is located between the driven wheel and the driving wheel, and wraps the top and bottom surfaces of the chain B (23) at this position. The teeth B (24) extend from the groove on the outer side of the protective shell (22). The large dial wheel (21) is mounted on the frame (16) next to the transmission chain mechanism via a non-powered shaft (25). Multiple sets of actuating teeth (26) are evenly spaced on the outer circumference of the large dial wheel (21). A feeding transmission channel is formed between the large dial wheel (21) and the transmission chain mechanism. Chain B (23) rotates, causing the teeth B (24) to move the sugarcane. The sugarcane contacts the teeth (26), causing the large wheel (21) to rotate, thereby transferring the sugarcane to the conveying channel.

10. The sugarcane harvester as described in claim 9, characterized in that: The conveying channel is not equipped with a guide rod (19) at the front. The tooth A (6) on the harvester tooth mechanism at the front of the conveying channel cooperates with the large wheel (21) to form a transmission structure.

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