A harvester

Abstract

The application discloses a harvester, which comprises a frame, a screening conveyor belt, a conveyor belt, a power device; the frame comprises a frame body, a first conveying support and a second conveying support connected with the frame body; the first conveying support is arranged obliquely; the first conveying support is rotationally connected with a first transmission roller, the second conveying support is rotationally connected with a second transmission roller, the screening conveyor belt is rotationally connected with the first conveying support through the first transmission roller, and the conveyor belt is rotationally connected with the second conveying support through the second transmission roller; the first transmission roller and the second transmission roller are directly or through a transmission device in transmission connection with the power device; the harvester can reduce the size and / or improve the working efficiency, can separate the mixed soil in the harvested crops and the soil attached to the surface of the crops from the crops, and has low height and small size, so that the harvester can work in hilly and mountainous areas.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery, and specifically relates to a harvester. Background Technology

[0002] Agricultural mechanization has become a necessary condition for modern agriculture; due to the complex structure of my country's arable land and the vast area of ​​hilly regions, how to fully realize agricultural mechanization in hilly areas has become an urgent problem to be solved.

[0003] Harvesters need to perform integrated operations of shoveling and separating crops, meaning they need to complete multiple functions such as harvesting, screening, and collecting. Therefore, traditional harvesters are generally tall and long. In hilly areas, where the roads are rugged, harvesters are prone to tipping over or harvesting crops with a lot of debris.

[0004] How to reduce the size of harvesters and / or improve their working efficiency to avoid problems such as tipping over or excessive debris in harvested crops when using harvesters in hilly farmlands. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned technical problems. It discloses a harvester that can reduce the size of the harvester and / or improve the working efficiency of the harvester, and can cleanly separate the soil mixed in with the harvested crops and the soil attached to the surface of the crops from the crops. Moreover, the harvester is low in height and small in size, so that it can work in hilly and mountainous areas.

[0006] To achieve the above objectives, a harvester is provided according to the present invention, comprising a frame, a screening conveyor belt, a conveyor belt, and a power unit;

[0007] The frame includes a frame body, and a first conveying bracket and a second conveying bracket connected to the frame body; the first conveying bracket is inclined.

[0008] The first conveying bracket is rotatably connected to a first drive roller, and the second conveying bracket is rotatably connected to a second drive roller.

[0009] The screening conveyor belt is rotatably connected to the first conveyor support via a first drive roller, and the conveyor belt is rotatably connected to the second conveyor support via a second drive roller;

[0010] The first drive roller and the second drive roller are directly or through a transmission device connected to the power device; the harvester also includes a shovel.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: while the harvested root crops are transported to the conveyor belt via the screening conveyor belt, impurities such as mud and soil mixed in with the root crops are screened out; the pre-screened root crops are transported to the tail end of the conveyor belt via the conveyor belt, and then to the root crop collection point; by tilting the first conveyor frame, the length of the screening conveyor belt can be increased without increasing the length of the harvester; the time for the harvested root crops to be transported and screened on the conveyor belt is increased, thereby improving screening capacity and efficiency, and achieving the separation of most of the mud and soil mixed in with the root crops.

[0012] Furthermore, the harvester also includes a first screening roller; the first screening roller includes an eccentric roller, a first anti-leakage device, and a first rotating shaft connected to the eccentric roller;

[0013] The first rotating shaft is rotatably connected to the frame directly or through the first connecting member, thereby realizing the rotatable connection between the eccentric roller and the frame.

[0014] The first leak-proof device is equipped with a screening channel and is connected to an eccentric roller, a first rotating shaft, or a frame.

[0015] The beneficial effect of adopting the above-mentioned further technical solution is that it enables root and tuber crops to have soil and debris fall through the gap between the second drive roller and the first screening roller, thereby removing residual debris from the root and tuber crops.

[0016] By rotating the eccentric roller to the frame, the vertical height of the upper surface of the eccentric roller changes over time during rotation. As a result, the vertical height of the contact surface between the eccentric roller and the root crop changes over time, thus causing debris attached to the surface of the root crop to detach from the surface of the root crop.

[0017] Furthermore, the axial distance between the second drive roller and the first screening roller is no greater than 0.5m; the axial distance between the second drive roller and the first screening roller is the distance between the central axis of the first conveying roller and the central axis of the second conveying roller; the maximum distance between the second drive roller and the first screening roller is 1-20cm, preferably 3-7cm, and the minimum distance is 0-10cm, preferably 2-5cm; the maximum distance between the second drive roller and the first screening roller is the maximum distance between adjacent surfaces of the second drive roller and the first screening roller; the minimum distance between the second drive roller and the first screening roller is the minimum distance between adjacent surfaces of the first conveying roller and the second conveying roller.

[0018] Furthermore, the eccentric roller is located behind the conveyor belt, and the eccentric roller is arranged opposite to the second drive shaft;

[0019] The first leak-proof device is located partially or entirely between the conveyor belt and the eccentric roller on the surface of the second drive roller;

[0020] The first leak-proof device is:

[0021] The first leak-proof device A includes a first support member disposed outside the eccentric roller. The first support member is connected to the eccentric roller, the first rotating shaft, or the frame. Preferably, the first support member can be a support ring, support net, etc., sleeved outside the eccentric roller. The first support member can rotate synchronously with the eccentric roller or it can not rotate. When the first support member does not rotate, it can be connected to the eccentric roller through a bearing.

[0022] or

[0023] The first leak-proof device B includes a second support member disposed outside the eccentric roller. The second support member rotates synchronously with the first rotating shaft. Preferably, the second support member rotates coaxially with the first rotating shaft. The second support member can also be a support ring, support net, etc., sleeved outside the eccentric roller. Synchronous rotation can keep the distance between the eccentric roller and the second support member relatively fixed during rotation. When the second support member is not connected to the eccentric roller, it can be driven to rotate by a separate transmission mechanism or power mechanism.

[0024] The beneficial effect of adopting the above-mentioned further technical solution is that the root and stem crops are directionally conveyed by the conveyor belt and then pass through the first screening roller; at the same time, when the root and stem crops pass through the conveyor belt on the surface of the second drive roller and the first screening roller, the impurities mixed in the root and stem crops fall off through the gap between the eccentric roller and the second conveyor roller; and at the same time, the root and stem crops are prevented from getting stuck between the second drive roller and the eccentric roller.

[0025] The above method avoids the problem of the gap between the eccentric roller and the second drive roller changing during the rotation of the eccentric roller, which would cause some slightly smaller or slender crops to fall off with debris. At the same time, it enables the root crops to change height as the eccentric roller rotates when passing through the first screening roller, and the debris attached to the surface of the crops will detach from the surface of the crops and fall off through the gap between the first screening roller and the second drive roller.

[0026] Furthermore, the first leak-proof device includes a plurality of support rings sleeved outside the eccentric roller, the support rings being directly or through a second connector connected to the first screening roller, and the support rings being spaced apart;

[0027] and / or

[0028] The harvester further includes a second screening roller, which is disposed opposite to the first screening roller; preferably, the second screening roller does not include an eccentric roller.

[0029] The beneficial effect of adopting the above-mentioned further technical solution is that, during the rotation of the first screening roller, root crops can contact the surface of the eccentric roller through the gap between adjacent curved baffles and change height as the eccentric roller rotates, while falling out through the gap between the first screening roller and the second transmission roller. At the same time, the blocking of the two adjacent support rings prevents some slightly smaller or slender crops from falling with debris.

[0030] The inclusion of a second screening roller facilitates the directional transport of root crops, removes impurities from the surface of the crops, and prevents them from getting stuck between the first and second screening rollers.

[0031] Furthermore, the first support member is a plurality of spaced-apart curved support members, or a curved support member with a plurality of screening channels, or a cylindrical support member with a plurality of screening channels.

[0032] The second support member is a series of curved support members arranged at intervals, or a curved support member with a series of screening channels, or a cylindrical support member with a series of screening channels.

[0033] Alternatively, the first support members are connected end to end in sequence, and at least one of the first support units is directly or through a connector to the first conveyor roller.

[0034] The beneficial effect of adopting the above-mentioned further technical solution is that, by doing so, the size of the gap between the first screening roller and the second conveying roller changes during the rotation of the first screening roller, which would cause some slightly smaller or slender crops to fall off with the debris. At the same time, it can make the height of the crops change as the eccentric roller rotates when the crops pass through the first screening roller, so that the debris attached to the surface of the crops will detach from the surface of the crops and fall off from the gap between the first eccentric roller and the second transmission roller.

[0035] Furthermore, the distance between the leak-proof device and the first rotating shaft is less than the axial distance between the first rotating shaft and the second transmission roller, where the axial distance is the distance between the axis of the first rotating shaft and the axis of the second transmission roller.

[0036] Preferably, the furthest distance between the leak-proof device and the axis of the first rotating shaft is a;

[0037] The distance between the first rotating shaft and the second transmission roller is b; the radius of the second transmission roller is c; the distance a is less than the difference between the distance b and the distance c.

[0038] The beneficial effect of adopting the above-mentioned further technical solution is that it avoids wear between the anti-leakage device and the second transmission roller when the first screening roller rotates.

[0039] Furthermore, the width of the screening channel is greater than the distance between the axis of the eccentric roller and the axis of the first moving shaft.

[0040] The beneficial effect of adopting the above-mentioned further technical solution is that it avoids the reduction in the separation effect of impurities in crops due to the anti-leakage device on the first screening roller.

[0041] Furthermore, the harvester also includes a stripping device, which includes a first stripping roller rotatably connected to the frame; the first stripping roller is disposed opposite to the first drive roller, and the rotation directions of the first stripping roller and the first drive roller are opposite.

[0042] The first stripping roller is located between the screening conveyor belt and the screening belt.

[0043] The beneficial effect of adopting the above-mentioned further technical solution is that, through the stripping device, weeds or seedlings mixed in with the root crops on the screening conveyor belt are transported to a designated position or the ground along the gap between the first drive roller and the first stripping roller when they pass through the first stripping roller, while not affecting the normal transport of the root crops after preliminary screening onto the conveyor belt.

[0044] Furthermore, the first stripping roller is connected to a seventh transmission gear;

[0045] The first transmission roller is connected to the fifth transmission gear and the sixth transmission gear;

[0046] The frame is rotatably connected to the eighth transmission gear and the ninth transmission gear;

[0047] The seventh and eighth transmission gears are connected by a second chain, the outer ring of which is connected to the sixth transmission gear. The sixth and seventh transmission gears are located on opposite sides of the closed loop formed by the second chain.

[0048] The beneficial effect of adopting the above-mentioned further technical solution is that the first drive roller drives the screening conveyor belt to rotate, thereby realizing the screening conveyor belt to transport and screen root crops; the second chain outer ring is connected to the sixth drive gear, and the sixth drive gear and the seventh gear are respectively located on both sides of the closed loop formed by the second chain, so that the first drive roller and the first stripping roller rotate in opposite directions, thereby realizing the screening conveyor belt and the first stripping roller rotate in opposite directions, so that the weeds or seedlings mixed in the root crops on the screening conveyor belt are transported to the designated position or the ground along the gap between the first drive roller and the first stripping roller before passing the first stripping roller, while not affecting the normal transport of the root crops after preliminary screening.

[0049] Furthermore, the frame is connected to a first traveling mechanism and a second traveling mechanism, which are arranged opposite to each other; the frame is provided with a first mounting hole, which is located between the first traveling mechanism and the second traveling mechanism;

[0050] An engine is installed in the first mounting hole, and the first walking mechanism and / or the second walking mechanism are connected to the engine via a transmission mechanism.

[0051] Preferably, the first mounting hole is located at the end of the frame; the frame is provided with a second mounting hole; the two sides of the frame are respectively rotatably connected to the first walking mechanism and the second walking mechanism.

[0052] The beneficial effects of adopting the above-mentioned further technical solution are as follows: The frame is provided with a first mounting hole, located between the first and second traveling mechanisms; an engine is installed within the first mounting hole; this allows the engine to output power to both sides of the frame or to be at similar distances to the first and second traveling mechanisms. This facilitates the even distribution of the transmission mechanism and related power-using mechanisms on the frame, and further helps the agricultural machinery frame bear most of the weight evenly on both sides, thus avoiding insufficient load-bearing capacity of the connected devices on the frame due to the mounting hole, which could lead to a reduced service life. Additionally, it ensures that the weight borne by the first and second traveling mechanisms is not significantly different, thus promoting stable operation of the agricultural machinery; and simultaneously, it reduces the height of the agricultural machinery.

[0053] The frame is provided with a second mounting hole, which allows the transmission mechanism to extend partially or fully into the second mounting hole, thereby reducing the height of the agricultural machinery.

[0054] By rotatably connecting the two sides of the frame to the first and second traveling mechanisms respectively, it is beneficial to improve the load-bearing capacity of the two sides of the frame.

[0055] Furthermore, the bottom of the engine is lower than the top of the first traveling mechanism;

[0056] And / or,

[0057] The upper surface of the frame is flat, and the bottom of the engine is lower than the upper surface of the frame; the position of the top of the engine relative to the upper surface of the frame is not limited, but preferably, the top of the engine is higher than the upper surface of the frame.

[0058] The beneficial effect of adopting the above-mentioned further technical solutions is that it further facilitates the reduction of the height of agricultural machinery.

[0059] Preferably, the bottom end of the engine extends into the first mounting hole, and the distance from the bottom end of the engine extending into the mounting hole is not less than 5cm, and preferably 15-40cm.

[0060] The first traveling mechanism and / or the second traveling mechanism are connected to a power input shaft; the power output shaft of the engine is not parallel to the power input shaft;

[0061] More preferably, the power output shaft of the engine is perpendicular to the power input shaft.

[0062] The transmission mechanism is a first transmission mechanism, which includes a power reversing device and a first power transmission device. One end of the power reversing device is connected to the power output shaft of the engine, and the other end is connected to the first power transmission device. The end of the first power transmission device away from the power reversing device is connected to the power input shaft. The power reversing device includes a first drive shaft and a second drive shaft. The first drive shaft and the second drive shaft are arranged perpendicularly. More preferably, the axial direction of the first drive shaft is parallel to the axial direction of the power output shaft of the engine. One end of the first drive shaft is connected to a first bevel gear, and one end of the second drive shaft is connected to a second bevel gear that meshes with the first bevel gear. The end of the first drive shaft away from the second drive shaft is connected to a first transmission wheel.

[0063] One end of the engine's power output shaft is connected to a second transmission wheel; the first transmission wheel and the second transmission wheel are connected by the first transmission belt; or the end of the first transmission shaft away from the second transmission shaft is connected to a first transmission gear; one end of the engine's power output shaft is connected to a second transmission gear that meshes with the first transmission gear.

[0064] or

[0065] The transmission mechanism is a second transmission mechanism, which includes a hydraulic oil pump, a hydraulic motor, and a gearbox; the engine power output shaft is connected to the hydraulic oil pump power input shaft; the hydraulic oil pump output oil pipe is connected to the hydraulic motor input oil pipe; the hydraulic motor power output shaft is connected to the power input shaft of the first traveling mechanism either through the gearbox or directly.

[0066] or

[0067] The transmission mechanism is a third transmission mechanism, which includes a hydraulic oil pump and a hydraulic motor. The hydraulic oil pump is connected to a first variable oil pipe and a second variable oil pipe. The hydraulic motor includes a first hydraulic motor and a second hydraulic motor. The hydraulic oil pump is connected to the first hydraulic motor and the second hydraulic motor respectively through the first variable oil pipe and the second variable oil pipe. The power output shafts of the first hydraulic motor and the second hydraulic motor are respectively connected to the power input shafts of the first traveling mechanism and the second traveling mechanism. Preferably, the hydraulic oil pump and the hydraulic motor are not integrally formed.

[0068] Furthermore, it also includes a depth limiting device connected to the first conveying support; the depth limiting device includes a first support and a second support, the first support being connected to the second support via a depth limiting frame;

[0069] The depth-limiting frame includes a first connecting bracket and a second connecting bracket arranged at intervals, and a support structure is provided between the first connecting bracket and the second connecting bracket;

[0070] The first connecting bracket is movably connected to the first bracket and the second bracket;

[0071] The second connecting bracket is movably connected to the first bracket and the second bracket;

[0072] The supporting structure is movably connected to the first bracket, and the supporting structure is connected to the second bracket;

[0073] The first bracket is connected to a traveling wheel, which is disposed opposite to each other on both sides of the support device;

[0074] The second bracket is connected to the first conveying bracket directly or via the fourth connector.

[0075] Preferably, the depth limiting device is located in front of the screening conveyor belt, and the harvester moves in the forward direction.

[0076] The beneficial effect of adopting the above-mentioned further technical solution is that the first support is connected to a traveling wheel, which is arranged opposite to each other on both sides of the support structure. This allows the height of the traveling wheel relative to the horizontal plane to change with the height of the ground, thereby causing the height of the second support relative to the horizontal plane to change with the height of the ground. When the second support is directly or indirectly connected to other working parts such as a shovel, it will simultaneously cause the height of the shovel and other working parts relative to the horizontal plane to change with the height of the ground. This ensures that the distance between the shovel and other working parts and the ground remains constant during the working process, and that the soil penetration depth of the shovel and other working parts remains constant and is not affected by changes in ground height. This avoids problems such as damage to the root crops being dug or excessive soil being dug out when the soil penetration depth changes with the ground height.

[0077] The use of a first and a second traveling wheel helps to avoid the problem of the traveling wheel's relative height to the horizontal plane changing only due to changes in the actual height of non-ground objects or clods of earth, which would otherwise cause changes in the actual height of non-ground objects to cause changes in the blade's relative height to the horizontal plane. Only when both traveling wheels change height simultaneously will the height of the second support change accordingly.

[0078] By using movable connections at both ends of the first and second connecting brackets to the first and second brackets, when only one traveling wheel changes height, the first and / or second connecting brackets rotate vertically, while the first bracket only tilts horizontally, ensuring that the second bracket does not change height relative to the horizontal plane. This allows the working parts, such as the blade, to change height relative to the horizontal plane.

[0079] When the height of the two traveling wheels relative to the horizontal plane changes in the same direction, the height of the first support changes in the same direction (raises or lowers), thereby driving the second support to change in the same direction (raises or lowers) through the support structure. In turn, the second support drives the working parts such as the blade to change in the same direction, thus achieving a constant soil penetration depth.

[0080] Furthermore, the support structure is: support structure A, which includes a seventh support device, one end of which is movably connected to the first bracket, and the other end of which is fixedly connected to the second bracket;

[0081] or

[0082] The supporting structure is support structure B, which includes a seventh supporting device and an eighth supporting device; one end of the eighth supporting device is movably connected to the seventh supporting device, and the other end of the eighth supporting device is movably connected to the second bracket.

[0083] One end of the seventh support device is movably connected to the first bracket, and the other end of the seventh support device is movably connected to the second bracket; the eighth support device is a telescopic device.

[0084] The beneficial effect of adopting the above-mentioned further technical solution is that, through the above technical solution, when the height of the two walking wheels relative to the horizontal plane changes in the same direction, the second support is driven by the support structure to change its height (raise or lower) in the same direction as the first support; at the same time, it is beneficial to ensure that when the height of one of the first and second walking wheels relative to the ground changes, the height of the second support relative to the horizontal plane does not change.

[0085] One end of the eighth support device is movably connected to the seventh support device, and the other end of the eighth support device is movably connected to the second bracket; one end of the seventh support device is movably connected to the first bracket, and the other end of the seventh support device is movably connected to the second bracket, which helps to reduce the resistance encountered when the telescopic device drives the second bracket to rise or fall.

[0086] By using the first support device as a telescopic device, the relative height difference between the first and second supports in the vertical direction can be adjusted according to different working environment needs, thereby enabling the preset soil penetration depth of the shovel and other working parts to be adjusted according to the needs of different plots or crops.

[0087] Preferably, the first connecting bracket is provided with a first connecting hole and a second connecting hole;

[0088] The first connecting hole is provided with a first limiting member A and a first limiting member B on both sides, which are connected to the first bracket; the first connecting hole is located in the first accommodating space formed by the oppositely provided first limiting member A and first limiting member B;

[0089] The first connecting hole is connected to the first limiting member A and the first limiting member B through the first rotating shaft;

[0090] The difference between the distance between the first limiting member A and the first limiting member B and the width of the first connecting hole is a, where 0 < a ≤ 8 cm;

[0091] The second connecting hole is provided with a second limiting member A and a second limiting member B on both sides, which are connected to the second bracket;

[0092] The second connecting hole is located within the second accommodating space formed by the opposing second limiting members A and B.

[0093] The second connecting hole is connected to the second limiting member A and the second limiting member B through the second rotating shaft;

[0094] The difference between the distance between the second limiting member A and the second limiting member B and the width of the second connecting hole is b, where 0 < b ≤ 8 cm;

[0095] and / or

[0096] The second connecting bracket has a third connecting hole and a fourth connecting hole at both ends;

[0097] The third connecting hole is provided with a third limiting member A and a third limiting member B on both sides, which are connected to the first bracket; the third connecting hole is located in the third accommodating space formed by the oppositely provided third limiting members A and B;

[0098] The third connecting hole is connected to the third limiting member A and the third limiting member B through the third rotating shaft;

[0099] The difference between the distance between the third limiting member A and the third limiting member B and the width of the third connecting hole is c, where 0 < c ≤ 8 cm;

[0100] The fourth connecting hole is provided with a fourth limiting member A and a fourth limiting member B on both sides, which are connected to the second bracket; the fourth connecting hole is located in the fourth accommodating space formed by the oppositely provided fourth limiting member A and the fourth limiting member B;

[0101] The fourth connecting hole is connected to the fourth limiting member A and the fourth limiting member B through the fourth rotating shaft;

[0102] The difference between the distance between the fourth limiting member A and the fourth limiting member B and the width of the fourth connecting hole is d, where 0 < d ≤ 8 cm.

[0103] More preferably, the difference a ≥ difference b; the difference c ≥ difference d; and / or

[0104] The diameter differences between the first connecting hole and the first rotating shaft are e and f, respectively; |e|≤8cm, |f|≤3cm; and / or

[0105] The diameter differences between the second connecting hole and the second rotating shaft are g and h, respectively; |g|≤3cm, |h|≤3cm; and / or

[0106] The diameter differences between the third connecting hole and the third rotating shaft are g and h, respectively; |i|≤3cm, |j|≤3cm; and / or

[0107] The diameter differences between the fourth connecting hole and the fourth rotating shaft are g and h, respectively; |l|≤3cm and |m|≤3cm;

[0108] Further preferably, the first connecting bracket and the first support are movably connected by a first hinge connection mechanism, the first support device is movably connected to or to the second support device and the first support through a seventh hinge connection mechanism, and the second support device is movably connected to the first support through an eighth hinge connection mechanism; the seventh hinge connection mechanism and the eighth hinge connection mechanism have the same structure as the first hinge connection mechanism.

[0109] The beneficial effect of adopting the above-mentioned further technical solution is that the first connecting bracket and the second connecting bracket can rotate relative to the first bracket and the second bracket through the above-mentioned technical solution;

[0110] By using the above, 0 < a ≤ 8 cm and / or 0 < b ≤ 8 cm and / or 0 < c ≤ 8 cm and / or 0 < d ≤ 8 cm; and / or |e| ≤ 8 cm, |f| ≤ 3 cm; and / or |g| ≤ 3 cm, |h| ≤ 3 cm; and / or |i| ≤ 3 cm, |j| ≤ 3 cm; and / or |l| ≤ 3 cm, |m| ≤ 3 cm, it is further beneficial to realize that when only one walking wheel changes height, the first connecting bracket and / or the second connecting bracket rotate vertically, the first bracket only tilts horizontally, and the second bracket does not change height relative to the horizontal plane, so that the working parts such as the shovel change height relative to the horizontal plane;

[0111] Furthermore, it helps to further prevent damage to the rotating connection positions of the first connecting rod and the first and second supports during the use of the depth limiting device; it also helps to prevent damage to the rotating connection positions of the second connecting rod and the first and second supports. Attached Figure Description

[0112] Figure 1 This is a schematic diagram of the harvester according to Embodiment 1 of the present invention;

[0113] Figure 2 This is a schematic diagram of the structure of the first screening roller, the second screening roller, and the second drive roller in Embodiment 1 of the present invention;

[0114] Figure 3 For the present invention Figure 1 A schematic diagram of the structure of part A;

[0115] Figure 4 This is a schematic diagram of the structure of the first screening roller, the second screening roller, and the conveyor belt in Embodiment 1 of the present invention;

[0116] Figure 5 This is a schematic diagram of the harvester according to Embodiment 2 of the present invention;

[0117] Figure 6 This is a schematic diagram of the depth limiting device according to Embodiment 2 of the present invention.

[0118] The markings shown in the attached figure:

[0119] 1. First screening roller; 2. Second screening roller; 3. Eccentric roller; 4. First rotating shaft; 5. Second transmission roller; 6. First leak-proof device; 7. Support ring; 8. First transmission roller; 9. First stripping roller; 10. First bracket; 11. Second bracket; 12. Seventh support device; 13. Eighth support device; 14. Sixth transmission gear; 15. Fifth transmission gear; 16. Seventh transmission gear; 17. Eighth transmission gear; 18. Traveling wheel; 19. Second conveying bracket; 22. Shovel; 23. Third connecting piece; 24. First conveying bracket; 25. Screening conveyor belt; 26. Frame; 27. Third conveying bracket; 28. Conveyor belt; 29. ​​Sixth connecting piece; 47. Engine; 48. First traveling mechanism. Detailed Implementation

[0120] To better understand the technical solution of this invention, the invention will be further described below with reference to specific embodiments and accompanying drawings. The described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0121] Example 1:

[0122] According to this embodiment, a harvester is provided, including a frame, a screening conveyor belt 25, a conveyor belt 28, a stripping device, a first screening roller 1, a second screening roller 2, a shovel 22, an engine 47, and a power unit;

[0123] The shovel 22, screening conveyor belt 25, conveyor belt 28, and separating device are connected to the frame in sequence; the shovel 22 is in front, and the harvester moves in the forward direction; the root and stem crop collection point is behind the separating device; the screening conveyor belt 25 is a conveyor belt 28 with a screen structure.

[0124] The frame includes a frame body 26, and a first conveying bracket 24, a second conveying bracket 19, and a third conveying bracket 27 connected to the frame body 26; the first conveying bracket is inclined.

[0125] The first conveying bracket 24 is rotatably connected to the first drive roller 8, and the second conveying bracket 19 is rotatably connected to the second drive roller 5.

[0126] The screening conveyor belt 25 is rotatably connected to the first conveyor support 24 via the first drive roller 8, and the conveyor belt 28 is rotatably connected to the second conveyor support 19 via the second drive roller 5.

[0127] The first drive roller 8 and the second drive roller 5 are directly or through a drive device connected to the power device.

[0128] The first conveying bracket 24 is connected to the frame 26 through a third support device. The third support device is vertically arranged, and the first conveying bracket 24 is inclined, that is, the first conveying bracket 24 is arranged at an angle to the horizontal plane.

[0129] The conveyor belt 28 is located behind the screening conveyor belt 25; the first screening roller 1 and the second screening roller 2 are located behind the conveyor belt 28; the first screening roller 1 and the second drive roller 5 are arranged opposite to each other;

[0130] The first conveying roller and the second conveying roller are rotatably connected to the second conveying support 19. The first screening roller 1 and the second screening roller 2 are arranged opposite to each other; the first screening roller 1 and the second screening roller 2 are rotatably connected to the frame; the first screening roller 1 includes an eccentric roller 3, a first rotating shaft 4, and a first leak-proof device 6;

[0131] The surface of the first eccentric roller 3 is connected to a first anti-leakage device 6; the first anti-leakage device 6 includes a plurality of spaced support rings; the support rings are connected to the surface of the eccentric roller 3 through a fifth connector.

[0132] The furthest distance between the surface of the support ring and the axis of the first rotating shaft 4 is a; the distance between the axis of the first rotating shaft 4 and the axis of the second transmission roller 5 is b; the radius of the second transmission roller 5 is c; distance a is less than the difference between distance b and distance c; the axis of the first conveying roller shaft overlaps with the central axis of the first leak-proof device 6.

[0133] The width of the distance between adjacent support rings is greater than the distance between the central axis of the eccentric roller 3 and the axis of the first rotating shaft 4.

[0134] The peeling device includes a first peeling roller 9, which is rotatably connected to the frame; the first peeling roller 9 is disposed opposite to the first transmission roller 8, and the first peeling roller 9 and the first transmission roller 8 rotate in opposite directions.

[0135] The first stripping roller 9 is connected to the seventh transmission gear 16; the first transmission roller 8 is connected to the fifth transmission gear 15 and the sixth transmission gear 14; the frame is rotatably connected to the eighth transmission gear 17 and the ninth transmission gear.

[0136] The seventh transmission gear 16 and the eighth transmission gear 17 are connected by a second chain 20. The outer ring of the second chain 20 is connected to the sixth transmission gear 14. The sixth transmission gear 14 and the seventh transmission gear 16 are located on both sides of the closed loop formed by the second chain 20.

[0137] The frame 26 is connected to a first traveling mechanism 48 and a second traveling mechanism, which are arranged opposite to each other; the frame 26 is provided with a first mounting hole, which is located between the first traveling mechanism 48 and the second traveling mechanism.

[0138] An engine 47 is provided in the first mounting hole, and the first walking mechanism 48 and the second walking mechanism are connected to the engine 47 through a transmission mechanism.

[0139] The first mounting hole is located at the end of the frame 26; the two sides of the frame 26 are rotatably connected to the first walking mechanism 48 and the second walking mechanism, respectively; the frame 26 is provided with a second mounting hole; the transmission mechanism extends partially or fully into the second mounting hole to reduce the height of the agricultural machinery;

[0140] The bottom of the engine 47 is lower than the top of the first traveling mechanism 48; the upper surface of the frame 26 is flat, and the bottom of the engine 47 is lower than the upper surface of the frame 26; the position of the top of the engine 47 relative to the upper surface of the frame 26 is not limited, but preferably, the top of the engine 47 is higher than the upper surface of the frame 26; the bottom of the engine 47 extends into the first mounting hole.

[0141] The first traveling mechanism 48 is connected to a power input shaft; the power output shaft of the engine 47 is perpendicular to the power input shaft.

[0142] The transmission mechanism is a first transmission mechanism, and the first transmission includes a power reversing device;

[0143] One end of the power reversing device is connected to the power output shaft of the engine 47, and the other end is connected to the first power transmission device. The end of the first power transmission device away from the power reversing device is connected to the power input shaft. The power reversing device includes a first transmission shaft and a second transmission shaft. The first transmission shaft and the second transmission shaft are arranged perpendicularly. The axial direction of the first transmission shaft is parallel to the axial direction of the power output shaft of the engine 47. A first bevel gear is connected to one end of the first transmission shaft, and a second bevel gear meshing with the first bevel gear is connected to one end of the second transmission shaft. A first transmission wheel is connected to the end of the first transmission shaft away from the second transmission shaft. A second transmission wheel is connected to one end of the power output shaft of the engine 47. The first transmission wheel and the second transmission wheel are connected by the first transmission belt.

[0144] The shovel 22 is located in front of the conveyor screening belt, and the shovel 22 is connected to the first conveyor support 24 through the third connector 23; the second support 11 is connected to the first conveyor support 24 through the fourth connector.

[0145] The third connector 23, at the end furthest from the blade 22, is connected to the first conveying bracket 24 via a height adjustment device;

[0146] The height adjustment device includes a first component connected to the third connector 23, a second component connected to the first conveying bracket 24, and a limiting component; the first component and the second component are arranged opposite to each other, and the first component or the second component is detachably connected to the second component by cooperating with the limiting component; the first component is a screw, the second component is a connecting plate with a through hole arranged opposite to the screw, the screw passes through the through hole, and the limiting component is a nut that cooperates with the screw.

[0147] Example 2:

[0148] The same content as in Embodiment 1 will not be repeated here; this embodiment provides a harvester, and also includes a depth limiting device connected to the first conveying bracket 24; the depth limiting device includes a first bracket 10 and a second bracket 11, and the first bracket 10 is connected to the second bracket 11 through a depth limiting frame;

[0149] The depth-limiting frame includes a first connecting bracket and a second connecting bracket spaced apart, with a support structure between the first and second connecting brackets; the first connecting bracket is movably connected to the first bracket 10 and the second bracket 11, and the movable connection is a hinged connection; the second connecting bracket is movably connected to the first bracket 10 and the second bracket 11, and the movable connection is a hinged connection; the support structure is movably connected to the first bracket 10, and the movable connection is a hinged connection; the first bracket 10 is connected to a traveling wheel 18, which is disposed opposite to each other on both sides of the support structure;

[0150] The traveling wheel 18 includes a first traveling wheel and a second traveling wheel; the first traveling wheel and the second traveling wheel are respectively connected to the first bracket 10 through a first universal coupling and a second universal coupling. The movable part of the first universal coupling is provided with an extension component, the extension component being an extension rod, and the fixed part of the first universal coupling is connected to a first limiting rod and a second limiting rod; the movable part of the second universal coupling is provided with an extension component, the extension component being an extension rod, and the fixed part of the second universal coupling is connected to a first limiting rod and a second limiting rod; the extension component is located between the first limiting rod and the second limiting rod, and the extension component rotates between the first limiting rod and the second limiting rod;

[0151] The second support 11 is connected to the first conveying support 24 via a fourth connector; the depth limiting device is located in front of the screening conveyor belt 25, and the harvester moves in the forward direction;

[0152] The support structure includes a seventh support device 12 and an eighth support device 13; one end of the eighth support device 13 is movably connected to the seventh support device, and the movable connection is a hinged connection; the other end of the eighth support device 13 is movably connected to the second bracket 11, and the movable connection is a hinged connection; one end of the seventh support device 12 is movably connected to the first bracket 10, and the movable connection is a hinged connection; the other end of the seventh support device 12 is movably connected to the second bracket 11, and the movable connection is a hinged connection; the eighth support device 13 is a telescopic device.

[0153] The first connecting bracket has a first connecting hole and a second connecting hole at both ends; a first limiting member A30 and a first limiting member B33 connected to the first bracket 10 are respectively provided on both sides of the first connecting hole; the first limiting member A30 and the first limiting member B33 are respectively provided with first through holes arranged opposite to each other;

[0154] The first connecting hole is located in the first accommodating space formed by the first limiting member A30 and the first limiting member B33 which are arranged opposite to each other, and the first connecting hole is connected to the first through holes on both sides through the first rotating shaft.

[0155] The first connecting bracket and the second connecting bracket rotate vertically relative to the first bracket 10 and the second bracket 11, and the first supporting device rotates vertically relative to the first bracket 10.

[0156] The distance between the first limiting member A30 and the first limiting member B33, that is, the difference between the width of the first accommodating space and the width of the first connecting hole, is a, where a = 6cm;

[0157] The second connecting hole is provided with a second limiting member A8 and a second limiting member B11 on both sides, which are connected to the second bracket 11; the second limiting member A8 and the second limiting member B11 are respectively provided with a second through hole arranged opposite to each other;

[0158] The second connecting hole is located in the second accommodating space formed by the second limiting member A8 and the second limiting member B11 which are arranged opposite to each other. The second connecting hole is connected to the second through holes on both sides through the second rotating shaft.

[0159] The distance between the second limiting member A8 and the second limiting member B11, that is, the difference between the width of the second accommodating space and the width of the second connecting hole, is b = 3cm;

[0160] The second connecting bracket has a third connecting hole and a fourth connecting hole at both ends;

[0161] The third connecting hole is provided with a third limiting member A34 and a third limiting member B37 on both sides, which are connected to the first bracket 10; the third limiting member A34 and the third limiting member B37 are respectively provided with a third through hole arranged opposite to each other;

[0162] The third connecting hole is located in the third accommodating space formed by the third limiting member A34 and the third limiting member B37 which are arranged opposite to each other. The third connecting hole is connected to the third through holes on both sides through the third rotating shaft.

[0163] The distance between the third limiting member A34 and the third limiting member B37, that is, the difference between the width of the third accommodating space and the width of the third connecting hole, is c, where c = 6cm;

[0164] The fourth connecting hole 14 is provided with a fourth limiting member A12 and a fourth limiting member B15 on both sides, which are connected to the second bracket 11; the fourth limiting member A12 and the fourth limiting member B15 are respectively provided with a fourth through hole arranged opposite to each other;

[0165] The fourth connecting hole is located in the fourth accommodating space formed by the fourth limiting member A12 and the fourth limiting member B15 which are arranged opposite to each other. The fourth connecting hole is connected to the fourth through holes on both sides through the fourth rotating shaft.

[0166] The distance between the fourth limiting member A12 and the fourth limiting member B15, that is, the difference between the width of the fourth accommodating space and the width of the fourth connecting hole, is d, where d = 3cm.

[0167] The diameter differences between the first connecting hole, the first through hole, and the first rotating shaft are e and f, respectively; |e| = 6cm and |f| = 2cm.

[0168] The diameter differences between the second connecting hole and the second through hole and the second rotating shaft are g and h, respectively; where |g| = 6cm and |h| = 2cm;

[0169] The diameter differences between the third connecting hole and the third through hole and the third rotating shaft are g and h, respectively; |i| = 6cm and |j| = 2cm.

[0170] The diameter differences between the fourth connecting hole and the fourth through hole and the fourth rotating shaft are g and h, respectively; |l| = 6cm and |m| = 2cm.

[0171] 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 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A harvester, characterized in that, Includes frame, screening conveyor belt (25), conveyor belt (28), power unit, first screening roller (1), stripping device, and depth limiting device; The frame includes a frame (26), and a first conveying bracket (24) and a second conveying bracket (19) connected to the frame (26); the first conveying bracket (24) is inclined. The first conveying bracket is rotatably connected to the first transmission roller (8), and the second conveying bracket (19) is rotatably connected to the second transmission roller (5). The screening conveyor belt (25) is rotatably connected to the first conveyor support (24) via the first drive roller (8), and the conveyor belt (28) is rotatably connected to the second conveyor support (19) via the second drive roller (5); The first transmission roller (8) and the second transmission roller (5) are directly or through a transmission device connected to the power device. The first screening roller (1) includes an eccentric roller (3), a first anti-leakage device, and a first rotating shaft (4) connected to the eccentric roller (3); The first rotating shaft (4) is directly or through the first connecting member rotatably connected to the frame, thereby realizing the rotatable connection between the eccentric roller (3) and the frame; The first leak-proof device is provided with a screening channel, and the first leak-proof device is connected to the eccentric roller (3) or the first rotating shaft (4) or the frame; The eccentric roller (3) is located behind the conveyor belt (28), and the eccentric roller (3) is arranged opposite to the second drive roller (5); The first leak-proof device is located partly or entirely between the conveyor belt (28) and the eccentric roller (3) on the surface of the second drive roller (5); The first leak-proof device (6) is: The first leak-proof device A includes a first support member disposed outside the eccentric roller (3), and the first support member is connected to the eccentric roller (3) or the first rotating shaft (4) or the frame. or The first leak-proof device B includes a second support member disposed on the eccentric roller (3), the second support member rotating synchronously with the first rotating shaft (4), and the second support member rotating coaxially with the first rotating shaft (4); The peeling device includes a first peeling roller (9), which is rotatably connected to the frame; the first peeling roller (9) is arranged opposite to the first drive roller (8). The first stripping roller (9) rotates in the opposite direction to the first rotating shaft (4); The first stripping roller (9) is connected to a seventh transmission gear (16); The first transmission roller (8) is connected to the fifth transmission gear (15) and the sixth transmission gear (14). The frame is rotatably connected to the eighth transmission gear (17) and the ninth transmission gear; The seventh transmission gear (16) and the eighth transmission gear (17) are connected by a second chain (20). The outer ring of the second chain (20) is connected to the sixth transmission gear (14). The sixth transmission gear (14) and the seventh transmission gear (16) are located on both sides of the closed loop formed by the second chain (20). The depth limiting device is connected to the first conveying bracket (24). The depth limiting device includes a first bracket (10) and a second bracket (11), wherein the first bracket (10) is connected to the second bracket (11) through a depth limiting frame; The depth-limiting frame includes a first connecting bracket and a second connecting bracket arranged at intervals, and a support structure is provided between the first connecting bracket and the second connecting bracket; The first connecting bracket is movably connected to the first bracket (10) and the second bracket (11); The second connecting bracket is movably connected to the first bracket (10) and the second bracket (11); The support structure is movably connected to the first bracket (10) and the support structure is connected to the second bracket (11); The first bracket (10) is connected to a walking wheel (18), which is disposed opposite to each other on both sides of the support device; The second support (11) is connected to the first conveying support (24) directly or through the fourth connector.

2. The harvester according to claim 1, characterized in that, The first leak-proof device (6) includes a plurality of support rings (7) sleeved outside the eccentric roller (3). The support rings (7) are directly or through a second connector connected to the first screening roller (1). The support rings (7) are spaced apart. and / or The harvester also includes a second screening roller (2), which is arranged opposite to the first screening roller (1).

3. The harvester according to claim 1, characterized in that, The frame (26) is connected to a first walking mechanism (48) and a second walking mechanism, which are arranged opposite to each other. The frame (26) is provided with a first mounting hole, which is located between the first traveling mechanism (48) and the second traveling mechanism; An engine (47) is provided in the first mounting hole, and the first walking mechanism (48) and / or the second walking mechanism are connected to the engine (47) through a transmission mechanism.

4. The harvester according to claim 3, characterized in that, The bottom of the engine (47) is lower than the top of the first walking mechanism (48); And / or, The upper surface of the frame (26) is flat, and the bottom of the engine is lower than the upper surface of the frame (26).

5. The harvester according to claim 1, characterized in that, The support structure is: support structure A, which includes a seventh support device (12), one end of which is movably connected to the first bracket (10), and the other end of which is fixedly connected to the second bracket (11); or The support structure is support structure B, which includes a seventh support device (12) and an eighth support device (13); one end of the eighth support device (13) is movably connected to the seventh support device (12), and the other end of the eighth support device (13) is movably connected to the second bracket (11); One end of the seventh support device (12) is movably connected to the first bracket (10), and the other end of the seventh support device (12) is movably connected to the second bracket (11); The eighth support device (13) is a telescopic device.

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