Mini semi-feed dual row combine

Abstract

The application discloses a micro semi-feeding double-row combine harvester, which comprises a frame, a cutting knife mechanism arranged at the lower part of the frame, and a threshing mechanism arranged at the upper part of the frame, and further comprises a supporting mechanism, a weeding mechanism, a longitudinal conveying mechanism, a first transverse conveying mechanism and a second transverse conveying mechanism. The micro semi-feeding double-row combine harvester can convey the rice ear part to the rear feeding groove through the longitudinal conveying mechanism before cutting the rice stem, and after the cutting knife mechanism cuts the rice stem, the rice stem can be transversely moved along the drum shaft under the conveying of the first transverse conveying mechanism and the second transverse conveying mechanism, and the threshing drum acts on the rice ear part to realize threshing during the transverse movement of the rice stem. Since the rice ear part of the cut rice is directly fed into the falling drum for threshing, compared with the prior semi-feeding combine harvester, the intermediate conveying mechanism is cancelled, the structure of the whole machine is simpler, the energy consumption is lower, and the weight of the whole machine is lighter.

Description

Technical Field

[0001] This invention relates to the field of combine harvester technology, and in particular to a miniature semi-feeding double-row combine harvester. Background Technology

[0002] To address the shortcomings of existing combine harvesters in terms of energy consumption, size, and weight, the inventors first filed invention patents: Patent Application No. 2020112809953, entitled "Semi-feeding Harvesting Mechanism for Combine Harvester"; Patent Application No. 2021104781467, entitled "Semi-feeding Combine Harvesting Mechanism"; and Patent Application No. 2019103400507, entitled "Top-mounted Bending Semi-feeding Combine Harvester." However, in the aforementioned combine harvesters, during operation, the cut rice ears need to be turned and conveyed through intermediate conveyor mechanisms such as bending conveyor chains before entering the threshing drum for threshing. This increases the complexity of the micro combine harvester's structure and also increases the machine's energy consumption. Therefore, it is necessary to optimize and improve its structure. Furthermore, due to the relatively dispersed arrangement of the various operating mechanisms and the long transmission path from the gearbox to each operating mechanism, the overall machine structure has poor compactness. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a miniature semi-feeding double-row combine harvester to solve the technical problem that existing semi-feeding combine harvesters require a complex steering and conveying mechanism to send the harvested rice into the threshing drum for threshing, which leads to the complex structure and increased energy consumption of the miniature combine harvester.

[0004] The present invention relates to a miniature semi-feeding double-row combine harvester, comprising a frame, a cutting mechanism at the lower part of the frame, and a threshing mechanism at the upper part of the frame. The threshing mechanism includes a cover mounted on the frame, a threshing drum, a sorting screen located below the threshing drum, and a screw conveyor located below the sorting screen inside the cover. One end of the cover has a rice ear inlet, and the other end has a rice ear outlet. A transverse opening is provided in the middle of the front side of the cover for the rice ear to move axially along the threshing drum. A feeding trough connected to the rice ear inlet is provided on the frame. The miniature semi-feeding double-row combine harvester also includes a rice lifting mechanism, a rice spreading mechanism, a longitudinal conveying mechanism, a first transverse conveying mechanism, and a second transverse conveying mechanism.

[0005] The rice-raising mechanism includes a left rice-raising plate, a middle rice-raising plate, and a right rice-raising plate that are tilted and fixed in front of the frame. A first channel for a row of rice to enter is formed between the left rice-raising plate and the middle rice-raising plate, and a second channel for another row of rice to enter is formed between the middle rice-raising plate and the right rice-raising plate.

[0006] The reeling mechanism includes an upper reel and a lower reel that rotate in the same direction;

[0007] The longitudinal conveying mechanism includes a first housing, a first chain located within the housing, a sprocket cooperating with the first chain, and rice ear feeding teeth disposed on the first chain; a third channel for rice to pass through is disposed beside the first housing, the rear end of the first channel, the rear end of the second channel, and the front end of the third channel intersect and connect with each other, and the rear end of the third channel is connected to the feeding trough; the front end of the longitudinal conveying mechanism is disposed at the inlet of the third channel, and the rear end of the longitudinal conveying mechanism is disposed in the feeding trough; the upper reel is located at the outlet of the second channel, and the upper reel rotates under the action of the rice ear feeding teeth;

[0008] The first transverse conveying mechanism includes a second outer shell located in the middle of the frame, a second chain arranged in the second outer shell, a sprocket cooperating with the second chain, and rice straw conveying teeth arranged on the second chain; the lower reel is located below the upper reel, and the lower reel is rotated by the rice straw conveying teeth.

[0009] The second transverse conveying mechanism includes a third chain located next to the transverse opening on the cover, a sprocket cooperating with the third chain, rice stalk clamping teeth arranged on the third chain, and a pressure plate cooperating with the clamping teeth to clamp the rice stalks; the rice ear feeding teeth of the longitudinal conveying mechanism are used to bend the rice ears backward and feed them into the rice stalk clamping teeth during the movement.

[0010] Furthermore, the miniature semi-feeding double-row combine harvester also includes a gearbox assembly, which includes a first gearbox, a second gearbox, a third gearbox, and a fourth gearbox. The first gearbox is arranged on the feed side of the threshing mechanism, and the first gearbox is connected to the power supply. The first gearbox directly outputs power to the threshing drum, the screw conveyor, the second gearbox, and the third gearbox. The second gearbox directly outputs power to the longitudinal conveying mechanism and the second transverse conveying mechanism. The third gearbox directly outputs power to the first transverse conveying mechanism and the fourth gearbox. The fourth gearbox directly outputs power to the cutting mechanism.

[0011] Furthermore, a straw discharge chamber is provided between the end of the threshing drum and the end of the cover. A straw discharge port is provided at the lower part of the straw discharge chamber. A straw discharge plate connected to the threshing drum is provided inside the straw discharge chamber. A spiral guide groove is provided on the inner side of the upper plate of the cover to guide the straw into the straw discharge chamber.

[0012] The beneficial effects of this invention are:

[0013] 1. The present invention is a miniature semi-feeding double-row combine harvester, which can directly feed the rice ears backward through the longitudinal conveying mechanism into the rice stalk clamping teeth and feeding groove of the second transverse conveying mechanism. After the cutting mechanism cuts the rice stalk, the rice stalk can move laterally along the roller axis under the conveying of the first transverse conveying mechanism and the second transverse conveying mechanism. During the transverse movement of the rice stalk, the threshing roller acts on the rice ears to achieve threshing.

[0014] Since the cut rice panicles are directly conveyed by the longitudinal conveyor mechanism to the feeding inlet of the threshing drum, the longitudinal conveyor mechanism itself has a bending conveying function and there is no need to set up an additional independent bending conveyor chain. Compared with the existing semi-feeding combine harvesters, the intermediate conveying mechanism is eliminated, the conveying path is shortened, the overall structure is simpler, the energy consumption is lower, and the overall weight is lighter.

[0015] 2. The present invention is a miniature semi-feeding double-row combine harvester, which can harvest two rows of rice at the same time. Compared with miniature combine harvesters that can only harvest one row, its harvesting efficiency is higher.

[0016] 3. The miniature semi-feeding double-row combine harvester of the present invention, since only the rice ears are fed into the threshing drum, this semi-feeding threshing method greatly reduces energy consumption compared to combine harvesters that feed the entire rice stalk into the threshing drum, and produces less weeds during threshing, making better use of the screening and separation of grains and weeds.

[0017] 4. In the miniature semi-feeding double-row combine harvester of the present invention, each gearbox in the gearbox assembly directly outputs power to each working mechanism, resulting in a short transmission path and a more compact overall structure. Attached Figure Description

[0018] Figure 1 This is a three-dimensional front view of a miniature semi-feeding double-row combine harvester.

[0019] Figure 2 This is a three-dimensional schematic diagram of the discharge side of a mini semi-feeding double-row combine harvester.

[0020] Figure 3 This is a three-dimensional schematic diagram of the feed side of a miniature semi-feeding double-row combine harvester.

[0021] Figure 4 This is a three-dimensional schematic diagram of a miniature semi-feeding double-row combine harvester after the gearbox housing has been removed.

[0022] Figure 5 This is a three-dimensional schematic diagram of the bottom side of a miniature semi-feeding double-row combine harvester.

[0023] Figure 6 This is a three-dimensional schematic diagram of a mini semi-feeding double-row combine harvester after the upper half of the threshing drum cover has been removed. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] As shown in the figure, the mini semi-feeding double-row combine harvester in this embodiment includes a frame 1. In specific implementation, the frame 1 is mounted on the walking mechanism of the combine harvester, which can be a tracked walking mechanism or a wheeled walking mechanism. A cutting mechanism 2 is provided at the lower part of the frame, and a threshing mechanism is provided at the upper part of the frame. The threshing mechanism includes a cover 3 mounted on the frame. Inside the cover are a threshing drum 4, a sorting screen 5 located below the threshing drum, and a screw conveyor 6 located below the sorting screen. One end of the cover has a rice ear inlet 7, and the other end has a rice ear outlet 8. A transverse opening 9 is provided in the middle of the front side of the cover for the rice ear to move axially along the threshing drum. A feeding trough 10 connected to the rice ear inlet is provided on the frame. The mini semi-feeding double-row combine harvester also includes a rice lifting mechanism, a rice spreading mechanism, a longitudinal conveying mechanism, a first transverse conveying mechanism, and a second transverse conveying mechanism.

[0026] The rice-supporting mechanism includes a left rice-supporting plate 11, a middle rice-supporting plate 12, and a right rice-supporting plate 13 that are tilted and fixed in front of the frame. A first channel 14 for a row of rice to enter is formed between the left and middle rice-supporting plates, and a second channel 15 for another row of rice to enter is formed between the middle and right rice-supporting plates.

[0027] The reeling mechanism includes an upper reel 16 and a lower reel 17 that rotate in the same direction.

[0028] The longitudinal conveying mechanism includes a first housing 18, a first chain 19 located within the housing, a sprocket 20 cooperating with the first chain, and rice ear feeding teeth 21 disposed on the first chain. A third channel 22 for rice to pass through is disposed beside the first housing. The rear ends of the first channel, the rear ends of the second channel, and the front ends of the third channel intersect and connect with each other. The rear end of the third channel is connected to the feeding trough 10. The front end of the longitudinal conveying mechanism is located at the inlet of the third channel, and the rear end of the longitudinal conveying mechanism is located within the feeding trough, with the rear end of the longitudinal conveying mechanism higher than the front end; the longitudinal conveying mechanism is inclined with the rear end higher than the front end. The upper reel is located at the outlet of the second channel and rotates under the action of the rice ear feeding teeth.

[0029] The first transverse conveying mechanism includes a second housing 23 located in the middle of the frame, a second chain 24 arranged in the second housing, a sprocket 25 cooperating with the second chain, and rice straw conveying teeth 26 arranged on the second chain; the lower reel is located below the upper reel, and the lower reel is rotated by the rice straw conveying teeth.

[0030] The second transverse conveying mechanism includes a third chain 27 located next to the transverse opening 9 on the cover, a sprocket 28 cooperating with the third chain, rice stalk clamping teeth 29 disposed on the third chain, and a pressure plate 30 cooperating with the clamping teeth to clamp the rice stalks; the rice ear feeding teeth of the longitudinal conveying mechanism are used to bend the rice ears backward and feed them into the rice stalk clamping teeth during the movement.

[0031] The miniature semi-feed double-row combine harvester described in this embodiment also includes a gearbox assembly, which comprises a first gearbox 31, a second gearbox 32, a third gearbox 33, and a fourth gearbox 34. The first gearbox is located on the feed side of the threshing mechanism and is connected to power via a pulley 35. The first gearbox directly outputs power to the threshing drum, the screw conveyor, the second gearbox, and the third gearbox. The sprocket in the first gearbox is connected to the shaft of the threshing drum, such as... Figure 5 The first gearbox's sprocket is connected to the shaft of the screw conveyor, as described above. Figure 5 As shown. Figure 4 As shown, the power output from the first gearbox 31 is redirected by the bevel gear 36 within the second gearbox 32 before being output. The second gearbox directly outputs power to the longitudinal conveying mechanism and the second transverse conveying mechanism via two shafts. Figure 4 As shown, the power output from the first gearbox 31 is redirected by the bevel gear 37 within the third gearbox 33, and then transmitted to the first transverse conveying mechanism and the fourth gearbox via the sprocket and chain mechanism 38 and shaft 39 within the third gearbox 33. The fourth gearbox directly outputs power to the cutting mechanism 2 via its sprocket and chain mechanism and output shaft 40.

[0032] In this embodiment, a straw discharge chamber is provided between the end of the threshing drum and the end of the cover. A straw discharge port 41 is provided at the lower part of the straw discharge chamber. A straw discharge plate 42 connected to the threshing drum is provided inside the straw discharge chamber. A spiral guide groove 43 is provided on the inner side of the upper plate of the cover to guide the straw into the straw discharge chamber.

[0033] The working principle of the mini semi-feeding double-row combine harvester in this embodiment is as follows:

[0034] As the combine harvester moves forward, two rows of rice enter the first channel 14 and the second channel 15 respectively. When the rice in the first channel 14 reaches its rear, it is pushed into the third channel 22 by the upper reel 16 and the lower reel 17. Since the second channel 15 and the third channel 22 are connected in a straight line, the rice in the second channel 15 can directly enter the third channel 22 during the combine harvester's forward movement. The rice entering the third channel 22 is pushed backward by the rice ear conveying teeth 21 of the longitudinal conveying mechanism and enters the feeding trough 10. The rice ears entering the feeding trough 10 move along the transverse opening 9 under the drive of the second transverse conveying mechanism, while the cutting mechanism cuts off the lower end of the rice stalks, and the cut stalks are then pushed laterally by the first transverse conveying mechanism.

[0035] The process of the second transverse conveying mechanism driving the rice ears to move laterally is as follows: the rice stalk clamping teeth 29 push the rice ears in the feeding trough 10 to continuously enter between the pressure plate 30 and the rice stalk clamping teeth 29. The feed end of the pressure plate 30 is provided with a chamfer 44 to guide the rice ears to enter between the pressure plate 30 and the rice stalk clamping teeth 29. After entering, the pressure plate 30 and the rice stalk clamping teeth 29 cooperate to clamp the rice stalk at the end of the rice ears. This can reliably ensure that the rice stalk is not dragged into the cover by the threshing drum during the transverse movement and threshing process of the rice ears.

[0036] The process of the first transverse conveying mechanism driving the rice straw to move laterally is as follows: the cut rice straw moves laterally under the push of the rice straw conveying teeth 26, and when the moving rice straw moves to the lower feeding wheel 17, the lower feeding wheel 17 can push the rice straw into the space between the adjacent rice straw conveying teeth 26, and cooperate with the rice straw conveying teeth 26 to push the rice straw to move laterally.

[0037] As the rice ears move laterally along the threshing drum, the rotating threshing drum 4 acts on the rice ears to thresh them. The sorting screen 5 sorts the rice grains and weeds produced during threshing. The rice grains falling from the sorting screen 5 enter the screw conveyor 6, which pushes the rice grains to the throwing device 45 for throwing. The weeds, on the other hand, enter the discharge chamber under the push of the threshing drum and the guidance of the guide trough 43. The weeds that enter the discharge chamber are discharged from the discharge port 41 by the push of the discharge plate 42.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A miniature semi-feeding double-row combine harvester, comprising a frame, a cutting mechanism at the lower part of the frame, and a threshing mechanism at the upper part of the frame. The threshing mechanism includes a cover mounted on the frame, a threshing drum, a sorting screen below the threshing drum, and a screw conveyor below the sorting screen are disposed inside the cover. One end of the cover has a rice ear inlet, and the other end has a rice ear outlet. A transverse opening for the rice ear to move axially along the threshing drum is provided in the middle of the front side of the cover. A feeding trough connected to the rice ear inlet is provided on the frame. The feature is that: The miniature semi-feeding double-row combine harvester also includes a rice-lifting mechanism, a rice-pulling mechanism, a longitudinal conveying mechanism, a first transverse conveying mechanism, and a second transverse conveying mechanism; The rice-raising mechanism includes a left rice-raising plate, a middle rice-raising plate, and a right rice-raising plate that are tilted and fixed in front of the frame. A first channel for a row of rice to enter is formed between the left rice-raising plate and the middle rice-raising plate, and a second channel for another row of rice to enter is formed between the middle rice-raising plate and the right rice-raising plate. The reeling mechanism includes an upper reel and a lower reel that rotate in the same direction; The longitudinal conveying mechanism includes a first housing, a first chain located within the housing, a sprocket cooperating with the first chain, and rice ear feeding teeth disposed on the first chain; a third channel for rice to pass through is disposed beside the first housing, the rear end of the first channel, the rear end of the second channel, and the front end of the third channel intersect and connect with each other, and the rear end of the third channel is connected to the feeding trough; the front end of the longitudinal conveying mechanism is disposed at the inlet of the third channel, and the rear end of the longitudinal conveying mechanism is disposed in the feeding trough; the upper reel is located at the outlet of the second channel, and the upper reel rotates under the action of the rice ear feeding teeth; The first transverse conveying mechanism includes a second outer shell located in the middle of the frame, a second chain arranged in the second outer shell, a sprocket cooperating with the second chain, and rice straw conveying teeth arranged on the second chain; the lower reel is located below the upper reel, and the lower reel is rotated by the rice straw conveying teeth. The second transverse conveying mechanism includes a third chain located next to the transverse opening on the cover, a sprocket cooperating with the third chain, rice stalk clamping teeth arranged on the third chain, and a pressure plate cooperating with the clamping teeth to clamp the rice stalks; the rice ear feeding teeth of the longitudinal conveying mechanism are used to bend the rice ears backward and feed them into the rice stalk clamping teeth during the movement.

2. The miniature semi-feeding double-row combine harvester according to claim 1, characterized in that: It also includes a gearbox assembly, which comprises a first gearbox, a second gearbox, a third gearbox, and a fourth gearbox. The first gearbox is located on the feed side of the threshing mechanism, is connected to power, and directly outputs power to the threshing drum, the screw conveyor, the second gearbox, and the third gearbox. The second gearbox directly outputs power to the longitudinal conveying mechanism and the second transverse conveying mechanism. The third gearbox directly outputs power to the first transverse conveying mechanism and the fourth gearbox, and the fourth gearbox directly outputs power to the cutting mechanism.

3. The miniature semi-feeding double-row combine harvester according to claim 1, characterized in that: A straw discharge chamber is provided between the end of the threshing drum and the end of the cover. A straw discharge port is provided at the lower part of the straw discharge chamber. A straw discharge plate connected to the threshing drum is provided inside the straw discharge chamber. A spiral guide groove is provided on the inner side of the upper plate of the cover to guide the straw into the straw discharge chamber.

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