Portable mountain grain harvester

Abstract

The present invention discloses a portable mountain grain harvester, comprising a threshing device for pulling out grains, a grain separation and collection device disposed below the threshing device, and a traveling device mounted on the threshing device. The threshing device comprises a front-opening curved cover, wherein an upper threshing wheel and a lower threshing wheel are mounted side by side in the curved cover, with the upper threshing wheel being moved forward a certain distance relative to the lower threshing wheel in a front-to-back position, and a portion of the front side of the upper and lower threshing wheels extending outside the curved cover to enable the pulling out of grains. The upper and lower threshing wheels are movably connected to the curved cover on both sides via a rotating shaft, and the rotating shafts on the same side of the upper and lower threshing wheels extend from the outer wall of the curved cover and are each connected to a driven gear, the driven gear being connected to a driving gear directly or through a transmission gear, and the driving gear being driven by a threshing wheel motor. The mountain grain harvester designed by the invention is compact and can be modularly disassembled and transported, making it particularly suitable for harvesting grains in mountain areas.

Description

Technical Field

[0001] The invention relates to a mountain agricultural machine, in particular to a portable mountain grain harvester. Background Art

[0002] Due to geographical restrictions, mountainous fields have small acreage, complex terrain with ups and downs, which makes it impossible for existing large harvesters to operate. This not only increases the labor intensity of operators and reduces work efficiency, but also brings a lot of inconvenience to the promotion of agricultural mechanization. Summary of the Invention

[0003] In view of the above problems, the present invention designs a portable mountain grain harvester, which is small in size and can be modularly disassembled and transported, and is particularly suitable for harvesting mountain grains.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A portable mountain grain harvester is characterized in that it includes a grain pulling and threshing device, a grain debris separation and collection device is arranged below the grain pulling and threshing device, and the grain debris separation and collection device is installed on the walking device; the grain pulling and threshing device includes a front-opening arc-shaped cover, an upper threshing wheel and a lower threshing wheel are installed in parallel in the upper and lower parts of the arc-shaped cover, and the upper threshing wheel is moved forward a certain distance relative to the lower threshing wheel in the front and rear positions, and a part of the front side of the upper and lower threshing wheels extends out of the arc-shaped cover to enable grain pulling operations; the upper and lower threshing wheels are movably connected to the arc-shaped cover on both sides by a rotating shaft, and the rotating shafts on the same side of the upper and lower threshing wheels extend out of the outer wall of the arc-shaped cover and are each connected to a driven gear, and the driven gear is connected to the driving gear directly or through a transmission gear, and the driving gear is driven by the threshing wheel motor.

[0006] More specifically, the above-mentioned grain chip separation and collection device includes a bottom connecting plate and two side connecting plates, the bottom connecting plate is fixedly connected to the walking device, and a driving battery is installed on the bottom connecting plate; each side connecting plate is connected to the corresponding side arc-shaped cover side wall through a detachable structure; a separation plate arranged obliquely backward is provided between the two side connecting plates, and leakage holes for grain chip separation are evenly distributed on the separation plate; a flat plate with a larger inclination angle is provided under the separation plate, the front end portion of the flat plate and the front end portion of the separation plate are fixedly connected to the same rotating shaft, and the two ends of the rotating shaft are movably hinged to the two side connecting plates; a horizontally arranged U-shaped chip discharge plate is provided under the rear end of the separation plate, and the plate surface of the U-shaped chip discharge plate is provided with an inclined surface structure inclined toward the left side; a vibration device that can make the separation plate vibrate up and down at a high frequency is provided on one side below the middle part of the separation plate; a grain collecting bucket is provided under the rear end of the flat plate, and the collecting bucket is positioned on the frame of the walking device.

[0007] More specifically, the above-mentioned traveling device includes a frame and a plurality of traveling wheels arranged on the frame, and the traveling wheels are driven by a traveling wheel motor on the frame; the front side of the frame is connected to the bottom connecting plate of the grain debris separation and collection device through a plurality of bolts; and the rear side of the frame is provided with a positioning groove for the grain collecting bucket.

[0008] More specifically, the upper and lower threshing wheels are both multi-faceted wheels, and each face of the multi-faceted wheel is provided with a row of spaced threshing teeth, the threshing teeth of different rows on the same threshing wheel are kept in the same axial position, and the threshing teeth on different threshing wheels are just staggered in the axial position and will not interfere with or collide with each other; a plurality of threshing thorns are arranged at intervals between some rows of threshing teeth in the upper threshing wheel, and the threshing thorns of different rows are kept in the same axial direction; an annular groove is provided on the face of the lower threshing wheel at the position corresponding to the threshing thorns;

[0009] More specifically, the above-mentioned threshing thorn consists of a straight rod and an elbow. The length of the straight rod is longer than the height of the threshing teeth, and the direction of the elbow is consistent with the rotation direction of the upper threshing wheel.

[0010] More specifically, the threshing teeth are configured to be in an inverted "V" shape with a pointed tip.

[0011] More specifically, the detachable structure includes an assembly hole on the side connecting plate, a connecting hole on the side wall of the arc-shaped cover, and a connecting bolt, and the connecting bolt passes through the assembly hole and the connecting hole in sequence to achieve fixed connection.

[0012] More specifically, there are a plurality of the assembly holes, which are arranged at intervals in a vertical direction.

[0013] More specifically, the vibration device includes a vibration motor, a cam is provided on the output shaft of the vibration motor, and the tooth end of the cam is held below the middle portion of the separation plate.

[0014] More specifically, a return torsion spring is provided on the rotating shaft to always press the separation plate downward.

[0015] More specifically, the arc-shaped cover is provided with an operating handle on one side wall thereof, and a control panel is provided on the side connecting plate on the same side.

[0016] More specifically, the above-mentioned grain collecting bucket includes a bucket body and a connecting rod located on the front side, and the two sides of the connecting rod are connected to the bucket body through side connecting rods; a slide groove is correspondingly provided at the rear of the connecting plates on both sides, and a card groove is provided at the bottom of the slide groove, and the connecting rod can slide into place along the slide groove and be engaged with the card groove.

[0017] During operation, the threshing wheel motor rotates at high speed, driving the upper threshing wheel to rotate counterclockwise and the lower threshing wheel to rotate clockwise. The thorns in the upper threshing wheel hook the grains between the two threshing wheels. The threshing teeth located on the upper and lower threshing wheels strike the rice heads during the high-speed rotation to separate the grains from the rice stalks. The separated grains, mixed with rice crumbs, fall onto the separation plate with leakage holes. Then, as the vibration device works, the separation plate and the flat plate vibrate at high frequency relative to the rotating shaft, causing the grains to fall through the leakage holes and onto the flat plate, thus separating the grains and rice crumbs. The separated rice crumbs fall from the rear end of the separation plate onto the U-shaped chip discharge plate, which is discharged to one side. The separated grains slide along the flat plate and enter the grain collection hopper.

[0018] The mountain grain harvester designed by the present invention is mainly composed of a threshing device, a grain debris separation and collection device and a walking device. Not only is the entire machine very small, but the three devices can also be disassembled, and modular decomposition and transportation can be achieved. It is very convenient to send the equipment into the complex working environment in the mountains, meeting the needs of harvesting mountain grains. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 , a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 , a schematic diagram of the three-dimensional structure of the present invention from another perspective;

[0021] Figure 3 , a schematic diagram of the three-dimensional structure of the straw threshing device of the present invention;

[0022] Figure 4 , a schematic diagram of the three-dimensional structure of the straw threshing device of the present invention after removing one side wall;

[0023] Figure 5 , a schematic structural diagram of the transmission mechanism of the straw threshing device of the present invention;

[0024] Figure 6 , a schematic diagram of the three-dimensional structure of the vibration device of the grain debris separation and collection device of the present invention;

[0025] Figure 7 , a three-dimensional diagram of the layout structure of the separation plate, flat plate and U-shaped chip removal plate of the grain chip separation and collection device of the present invention. DETAILED DESCRIPTION

[0026] like Figure 1-7 As shown, a portable mountain grain harvester includes a threshing device 1, a grain debris separation and collection device 2 is provided below the threshing device 1, and the grain debris separation and collection device 2 is installed on a walking device 3.

[0027] The rice pulling and threshing device 1 includes a front-opening arc-shaped cover 11, in which an upper threshing wheel 12 and a lower threshing wheel 13 are installed in parallel and spaced apart in the upper and lower parts of the arc-shaped cover 11, and the upper threshing wheel 12 is moved forward a certain distance relative to the lower threshing wheel 13 in the front and rear positions, and a part of the front side of the upper and lower threshing wheels extends out of the arc-shaped cover 11 to enable rice pulling operations.

[0028] The upper and lower threshing wheels 12 and 13 are both multi-faceted wheels, each face of which is provided with a row of spaced threshing teeth 121 or 131, each of which is arranged in a pointed inverted "V" shape. The threshing teeth 121 or 131 in different rows on the same threshing wheel are kept in the same axial position, and the threshing teeth 121 and 131 on different threshing wheels are staggered and cross-arranged in the axial position. The cross-distributed threshing teeth 121 and 131 on the two threshing wheels can effectively strike the head of the rice grains during high-speed rotation to separate the grains from the rice stalks.

[0029] A plurality of threshing teeth 121 in some rows of the upper threshing wheel 12 are spaced apart and provided with a plurality of threshing thorns 122, and the threshing thorns 122 in different rows are arranged in the same axial position. An annular groove 132 is provided on the edge surface of the lower threshing wheel 13 at the position corresponding to the threshing thorns 122. During operation, the threshing thorns 122 can enter the annular groove 132 of the lower threshing wheel 13 during rotation to avoid mutual interference.

[0030] The thresher 122 is composed of a straight rod 1221 and an elbow 1222. The length of the straight rod 1221 is longer than the height of the threshing teeth 121. Generally, the length of the straight rod 1221 is 1.5-2.5 times the height of the threshing teeth 121. The direction of the elbow 1222 is consistent with the rotation direction of the upper threshing wheel 12.

[0031] The upper threshing wheel 12 and the lower threshing wheel 13 are movably connected to the curved cover 11 on both sides via a rotating shaft. One side of the rotating shaft of the upper threshing wheel 12 extends out of the outer wall of the curved cover 11 and is connected to a driven gear 123. The other side of the rotating shaft of the lower threshing wheel 13 extends out of the outer wall of the curved cover 11 and is connected to a driven gear 133. The driven gears 123 and 133 are connected to the driving gear 15 directly or through a transmission gear 14. In this figure, the driven gear 123 of the upper threshing wheel 12 is directly connected to the driving gear 15, while the driven gear 133 of the lower threshing wheel 13 is connected to the driving gear 15 through a transmission gear 14. The driving gear 15 is driven by the threshing wheel motor 151. During operation, the threshing wheel motor 151 drives the driving gear 15 to rotate clockwise, which in turn drives the upper threshing wheel 12 to rotate counterclockwise and the lower threshing wheel 13 to rotate clockwise to perform the grain harvesting operation.

[0032] Considering that a large amount of dust will be generated during operation, a dust cover 16 is provided on the outside of the transmission mechanism composed of the driven gears 123, 133, the driving gear 15 and the transmission gear 14 to reduce the entry of dust, reduce gear wear and extend the service life.

[0033] The grain debris separation and collection device 2 includes a bottom connecting plate 21 and two side connecting plates 22 .

[0034] The bottom connecting plate 21 is fixedly connected to the walking device 3 by a plurality of bolts 211 to ensure that the two can be quickly disassembled and separated in practice. A replaceable driving battery 4 is installed on the bottom connecting plate 21 to meet the battery replacement needs during long-term work.

[0035] Each side connecting plate 22 is connected to the corresponding side wall of the curved cover 11 via a detachable structure. In this embodiment, the detachable structure includes an assembly hole 231 on the side connecting plate 22, a connection hole 233 on the side wall of the curved cover 11, and a connecting bolt 232. The connecting bolt 232 sequentially passes through the assembly hole 231 and the connection hole to achieve a fixed connection.

[0036] Here, considering the need to harvest rice stalks of different heights, the present invention provides a plurality of assembly holes 231 arranged vertically at intervals. During use, by connecting different assembly holes 231, the height of the threshing device 1 relative to the grain separation and collection device 2 can be adjusted to meet the harvesting needs of grains of different heights.

[0037] A separating plate 24, positioned obliquely and rearwardly, is disposed between the two connecting plates 22. Leakage holes 241 for separating grain crumbs are evenly distributed on the separating plate 24. A flat plate 25 with a greater inclination angle is disposed below the separating plate 24. The front end of the flat plate 25 and the front end of the separating plate are fixedly connected to the same rotating shaft 26. The ends of the rotating shaft 26 are movably hinged to the two connecting plates 22. Return torsion springs are provided at the hinges, which tend to reset the separating plate 24 and the flat plate 25 by pressing them downward.

[0038] A U-shaped chip removal plate 27 is disposed below the rear end of the separation plate 24 . The U-shaped chip removal plate 27 has a plate surface that is inclined toward the left side, so as to facilitate the automatic discharge of rice scraps.

[0039] A vibration device is provided on one side below the rear end of the separation plate 24, which can cause the separation plate to vibrate up and down at a high frequency. The vibration device includes a vibration motor 281, and a cam 282 is provided on the output shaft of the vibration motor 281. The tooth end of the cam 282 is supported below the middle portion of the separation plate 24. During operation, the vibration motor 281 drives the cam 282 to rotate, causing the cam 282 to periodically collide with the separation plate 24. This operating mode, combined with the reset force of the reset torsion spring and the deadweight of the separation plate 24 and the flat plate 25, causes the separation plate 24 and the flat plate 25 to vibrate at a high frequency around the rotation axis. This vibration, on the one hand, promotes the rapid passage of grain from the separation plate 24 through the leak hole 241 and onto the flat plate 25, achieving effective separation of grain and rice crumbs. On the other hand, it causes the rice crumbs on the separation plate 24 to gradually slide onto the U-shaped chip discharge plate 27, causing the grain on the flat plate 25 to slide quickly.

[0040] A grain collecting bucket 29 is provided below the rear end of the flat plate 25 to collect the grains that have fallen from the flat plate 25 . The collecting bucket 29 is positioned on the frame of the traveling device 3 .

[0041] To facilitate transport, the grain collection hopper 29 consists of a hopper body 291 and a connecting rod 292 located at the front. The connecting rod 292 is connected to the hopper body 291 on both sides by side connecting rods 293. A chute 221 is provided at the rear of each of the two connecting plates 22, and a retaining groove 222 is provided at the bottom of the chute 221. During use, the connecting rod 292 slides into position within the chute 221 and engages with the retaining groove 222, securing the entire grain collection hopper 29. When the grain is full and needs to be replaced, the grain collection hopper 29 can be detached by simply lifting the connecting rod 292 to disengage it from the retaining groove 222 and then pulling it back along the chute 221, allowing for quick replacement of the empty grain collection hopper.

[0042] The traveling device 3 includes a frame 31 and a plurality of traveling wheels 32 mounted on the frame. The traveling wheels 32 are driven by a traveling wheel motor 321 positioned on the frame 31. The front side of the frame 31 is connected to the bottom connecting plate 21 of the grain separation and collection device via a plurality of bolts 211. The rear side of the frame 31 is provided with a positioning slot for the grain collection hopper 29.

[0043] During operation, the threshing wheel motor 151 rotates at high speed, driving the upper threshing wheel 12 to rotate counterclockwise and the lower threshing wheel 13 to rotate clockwise. The threshing teeth 121 and 131 arranged crosswise on the upper and lower threshing wheels 12 and 13 hit the rice heads during the high-speed rotation to separate the rice from the rice stalks. The separated rice, mixed with rice debris, falls onto the separation plate 24 with a leakage hole 241. Then, as the vibration device operates, the separation plate 24 and the flat plate 25 vibrate at high frequency relative to the rotating shaft 26, causing the rice to fall onto the flat plate 25 through the leakage hole 241, thereby separating the rice from the rice debris. The separated rice debris falls from the rear end of the separation plate 24 onto the U-shaped chip discharge plate 27, which is discharged to one side. The separated rice slides along the flat plate 25 and enters the grain collection hopper 29.

[0044] The arc cover 11 is provided with an operating handle 111 on one side wall thereof, and a control panel 223 is provided on the side connecting plate 22 on the same side. During operation, the operator can hold the handle 111 and adjust the buttons on the control panel 223 to control the current movement and harvesting.

[0045] In summary, the mountain grain harvester designed by the present invention is mainly composed of a threshing device 1, a grain debris separation and collection device 2 and a walking device 3. Not only is the whole machine very small, but the three devices can be disassembled to achieve modular disassembly and transportation, which makes it very convenient to send the equipment into the complex working environment in the mountains to meet the needs of harvesting mountain grains.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent change or modification made to the above embodiment based on the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A portable mountain grain harvester, characterized by: The invention comprises a rice pulling and threshing device, a rice chip separation and collection device is arranged below the rice pulling and threshing device, and the rice chip separation and collection device is installed on the walking device; the rice pulling and threshing device comprises a front-opening arc-shaped cover, an upper threshing wheel and a lower threshing wheel are arranged in parallel in the upper and lower parts of the arc-shaped cover, and the upper threshing wheel is moved forward a certain distance relative to the lower threshing wheel in the front and rear positions, and a part of the front side of the upper and lower threshing wheels extends out of the arc-shaped cover to enable rice pulling operations; the upper and lower threshing wheels are movably connected to the arc-shaped cover on both sides through a rotating shaft, and the rotating shafts on the same side of the upper and lower threshing wheels extend out of the outer wall of the arc-shaped cover and are respectively connected to a driven gear, and the driven gear is connected to the driving gear directly or through a transmission gear, and the driving gear is driven by the threshing wheel motor; the walking device comprises a frame and a setting There are several traveling wheels on the frame, and the traveling wheels are driven by the traveling wheel motor on the frame; the front side of the frame is connected to the bottom connecting plate of the grain debris separation and collection device by several bolts; the rear side of the frame is provided with a positioning groove for the grain collecting bucket; the upper and lower threshing wheels are both multi-faceted wheels, and each face of the multi-faceted wheel is provided with a row of threshing teeth arranged at intervals, and the threshing teeth of different rows on the same threshing wheel are kept in the same axial position, and the threshing teeth on different threshing wheels are just staggered in the axial position and will not interfere with or collide with each other; a plurality of plucking thorns are arranged at intervals in some rows of threshing teeth in the upper threshing wheel, and the plucking thorns of different rows are kept in the same axial direction; an annular groove is provided on the face of the lower threshing wheel at the position corresponding to the plucking thorns.

2. The portable mountain grain harvester according to claim 1, characterized in that: The lifting of the lifting mechanism is to lift the lifting mechanism on the lifting platform, and the lifting mechanism is lifted up and down and is in a state of being lifted and lowered The lifting mechanism is lifted and lowered The lifting mechanism is lifted and lowered The lifting mechanism is in a state of being reliably grasped and controlled by the lifting mechanism.

3. The portable mountain grain harvester according to claim 1, characterized in that: The threshing thorn consists of a straight rod and an elbow. The length of the straight rod is longer than the height of the threshing teeth, and the direction of the elbow is consistent with the rotation direction of the upper threshing wheel.

4. The portable mountain grain harvester according to claim 2, characterized in that: The detachable structure comprises an assembly hole on the side connecting plate, a connecting hole on the side wall of the arc-shaped cover and a connecting bolt, and the connecting bolt passes through the assembly hole and the connecting hole in sequence to achieve fixed connection.

5. The portable mountain grain harvester according to claim 4, characterized in that: There are multiple assembly holes, which are arranged at intervals in a vertical direction.

6. The portable mountain grain harvester according to claim 2, characterized in that: The vibration device comprises a vibration motor. A cam is arranged on the output shaft of the vibration motor. The tooth end of the cam is held below the middle of the separation plate.

7. A portable mountain grain harvester according to claim 1 or 2, characterized in that: The arc-shaped cover is provided with an operating handle on one side wall thereof, and a control panel is provided on the side connecting plate on the same side.

8. The portable mountain grain harvester according to claim 1 or 2, characterized in that: The grain collecting bucket includes a bucket body and a connecting rod located at the front side, and the two sides of the connecting rod are connected to the bucket body through side connecting rods; a slide groove is correspondingly provided at the rear of the connecting plates on both sides, and a card slot is provided at the bottom of the slide groove, and the connecting rod can slide into the slide groove and be engaged with the card slot after it is in place.

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