Dual-channel combined harvester and method suitable for strip intercropping of soybean and corn

Abstract

The present invention discloses a dual-channel combined harvester and method suitable for strip intercropping of soybean and corn. The combined harvester includes a mobile vehicle body and a combined cutting table part mounted on the mobile vehicle body. The combined cutting table part includes a main bracket. A soybean cutting table and a corn ear picking table are mounted on the main bracket, and the two are respectively connected to a corn grain box and a soybean grain box through a corn conveying device and a soybean conveying device. The main bracket is rotatably mounted on the mobile vehicle body, and a first angle adjustment mechanism is mounted between the two. The soybean cutting table has a first bracket fixed relative to the main bracket. The corn ear picking table includes a second bracket. The second bracket is rotatably mounted relative to the main bracket, and a second angle adjustment mechanism is provided between the two. In the present invention, through the first angle adjustment mechanism, the entire combined cutting table part can be lifted in a large range as a whole, which is convenient for harvesting height control and transportation. At the same time, the corn ear picking table is connected to the main bracket through the second angle adjustment mechanism and can be lifted independently.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural harvesting, in particular to a dual-channel combined harvester and method suitable for strip intercropping of soybean and corn. Background Art

[0002] At present, in the strip intercropping mode of soybean and corn, the harvesting of crops is carried out by using existing soybean and corn combined harvesters to harvest crops separately and step by step. The existing harvesters have poor adaptability to this production mode, and there are problems such as poor operation quality, insufficient production capacity, and low operation efficiency. In actual production, there is a serious lack of harvesting equipment suitable for the strip intercropping mode of soybean and corn. It is urgent to develop suitable high-efficiency harvesting equipment to improve the overall income of this planting mode, enhance the enthusiasm of farmers, and provide technical equipment support for the popularization and application of this planting mode.

[0003] In the strip intercropping mode of soybean and corn, if it is possible to harvest soybean and corn simultaneously, the operation efficiency can be greatly improved, and the economic benefits of this planting mode can be enhanced. However, at present, there is no report on an integrated combined harvester that can harvest soybean and corn simultaneously, and there is no such model on the market.

[0004] Taking the "2-row corn + 4-row soybean" intercropping mode with the largest popularization area at present as an example, currently, a narrow-width grain harvester is mainly used to harvest 4 rows of soybeans at a time, and a small corn harvester is used to harvest 2 rows of corn at a time. Soybeans and corn are harvested separately and step by step. When harvesting a single crop, it is inconvenient to turn around in the field, the harvesting efficiency is low, the process is cumbersome, and the harvesting operation cost is greatly increased, directly affecting the overall benefit of the soybean-corn intercropping mode. For the "2-row corn + 4-row soybean" intercropping mode, the present invention designs a dual-channel soybean-corn combined harvester, which can realize the simultaneous one-time harvesting operation of 2 rows of corn and 4 rows of soybeans.

[0005] In the prior art, the Chinese patent with the application number 202220851421.5 proposed an integrated soybean-corn combined harvester, which disclosed the innovation of simultaneous harvesting operation of soybean and corn. However, the applicant found in continuous practice that for the cutting table equipped with an integrated auger, on the integrated auger, blades with opposite rotation directions are installed to realize the conveying of soybeans and corn. Due to the different planting densities and crop yields of soybeans and corn, there are phenomena such as corn plants staying in the cutting table and serious corn breakage during the equal-speed conveying of the integrated auger. Since the cutting table auger is an integral structure, the soybean cutting table and the corn cutting table are only simply assembled together, and the soybean reel and the corn divider are basically in the same plane, which will cause soybean loss during harvesting. In the layout of the grain bin, the soybean and corn grain bins are arranged front and back, and the overall length of the machine is too long, and the center of gravity is unstable.

[0006] The present application aims to solve the following technical problems:

[0007] (1) The one-piece cutter bar cannot adapt to the actual conditions of soybeans and corn for harvesting, resulting in a high loss rate.

[0008] (2) The cutter bars corresponding to the two crops of soybeans and corn will affect each other, resulting in the fruits harvested by the two cutter bars being mixed with each other.

[0009] (3) When the corn ears enter the corn grain tank, due to the relatively deep corn grain tank, the corn will be damaged.

[0010] (4) The harvesting method is unreasonable, and it is necessary to frequently operate the machine to turn around, resulting in low efficiency.

[0011] The following embodiments will be developed with the technical problem in the above-mentioned (1) aspect as the main technical problem. Summary of the Invention

[0012] Object of the Invention: In order to overcome the deficiencies in the prior art, the present invention provides a dual-channel combine harvester and method suitable for strip intercropping of soybeans and corn, aiming to enable the cutter bars corresponding to the two crops of soybeans and corn to be adjusted at a large overall range of angles, while enabling the two cutter bars to be adjusted in height according to the actual conditions of their respective corresponding crops.

[0013] Technical Solution: To achieve the above object, the dual-channel combine harvester suitable for strip intercropping of soybeans and corn of the present invention includes a mobile vehicle body and a combined cutter bar part installed on the mobile vehicle body;

[0014] The combined cutter bar part includes a main support; a soybean cutter bar and a corn ear picker are installed on the main support, and the two are respectively connected to a corn grain tank and a soybean grain tank through a corn conveying device and a soybean conveying device;

[0015] The main support is rotatably installed on the mobile vehicle body, and a first angle adjustment mechanism is installed between the two;

[0016] The soybean cutter bar has a first support fixed relative to the main support;

[0017] The corn ear picker includes a second support; the second support is rotatably installed relative to the main support, and a second angle adjustment mechanism is provided between the two.

[0018] Further, the corn ear picker is arranged backward and upward relative to the soybean cutter bar.

[0019] Further, the corn grain tank and the soybean grain tank are arranged in the left-right direction.

[0020] Further, the soybean cutter bar includes a reel and a transverse soybean conveying auger, and the soybean conveying auger is connected to the soybean conveying device.

[0021] Further, the corn ear picking table includes two groups of ear picking devices; each group of ear picking devices includes two rollers rotatably mounted on the second bracket and arranged in parallel with each other, namely an auxiliary feeding roller and a stalk pulling roller. A channel for the corn stalk part to enter is formed between the two rollers; a dialing wheel is installed at the front end of the channel, and a horizontally arranged corn ear conveying auger is installed below the rear side of the channel; a straw chopping roller is also installed below the ear picking device.

[0022] The two rollers included in each group of ear picking devices are both connected to the same transmission box, and the transmission box makes the two rollers rotate at the same speed in opposite directions; the transmission box is driven by a hydraulic motor.

[0023] Further, a corn buffer device is installed in the corn grain box, and the corn buffer device includes a base plate; a buffer plate is installed on the base plate, and buffer springs are installed between the two.

[0024] Further, the corn buffer device further includes a seat plate, a first hinge seat installed on the seat plate, and a second hinge seat installed on the base plate. A pneumatic telescopic rod is connected between the two hinge seats; the base plate is rotatably installed relative to the seat plate.

[0025] Further, the seat plate can lift and slide relative to the corn grain box, and a guiding and sliding device is arranged between the two.

[0026] A driving mechanism is further arranged between the corn buffer device and the corn grain box; the driving mechanism includes a gear, a rack, a gear shaft and a one-way clutch; the gear and the rack are meshed with each other, and the two are respectively rotatably installed relative to the seat plate and the base plate; the one-way clutch is installed between the gear and the gear shaft; the driving mechanism further includes a lead screw installed in the corn grain box and a lead screw nut rotatably installed on the seat plate; a transmission relationship is established between the gear shaft and the lead screw nut through a bevel gear set.

[0027] Further, the soybean grain box includes a square main box body and a grain discharging opening located below the main box body; the grain discharging opening is in a four-sided conical shape, and the stacking angles of its left and right side surfaces are both α1, and the stacking angles of the front and rear side surfaces are α2 and α3 respectively; α1 = 135°, α2 = 135°, α3 = 72°.

[0028] A dual-channel combined harvesting method suitable for strip intercropping of soybean and corn, the method includes:

[0029] Operating the combined harvester to perform multiple rounds of cyclic harvesting operations on the current operation area. In each round of harvesting operation, the combined harvester first harvests the soybean-corn crop combination at one end of the remaining crops in the operation area, and then harvests the soybean-corn crop combination at the other end of the remaining crops.

[0030] When the remaining crops cannot form a complete soybean - corn crop combination, the corresponding cutter bar in the combined cutter bar part is used to harvest the remaining crops according to the type of the crops.

[0031] Beneficial effects: The dual - channel combine harvester and method suitable for soybean - corn strip intercropping of the present invention have the following beneficial effects:

[0032] Through the first angle adjustment mechanism, the overall large - range lifting of the entire combined cutter bar part can be realized, which is convenient for controlling the harvesting height and transportation. At the same time, the corn picker is connected to the main support through the second angle adjustment mechanism and can be independently controlled to lift, which can solve the problem that the soybean cutter bar and the corn picker in the prior art operate synchronously and are difficult to adapt to the actual situation in real time, and is more convenient to operate compared with the scheme of independently controlling the lifting of the two cutter bars (soybean cutter bar and corn picker).

[0033] Configuring the corn picker backward and upward relative to the soybean cutter bar can reduce the mutual influence between the two cutter bars.

[0034] By setting the corn buffer device, the corn entering the corn grain tank can be buffered to prevent the corn ears from being impacted and broken, and the corn buffer device can rise as the amount of corn in the corn grain tank increases, will not be buried by the corn, and can always play a buffering role;

[0035] The harvesting path is reasonably planned, the machine does not need to turn around frequently, can run smoothly, and improves the harvesting efficiency. Brief Description of the Drawings

[0036] Figure 1 It is the overall structure diagram of the combine harvester;

[0037] Figure 2 It is the structure diagram of the combined cutter bar part;

[0038] Figure 3 It is the top view of the combined cutter bar part (excluding the reel);

[0039] Figure 4 It is the top - view structure diagram of the corn picker;

[0040] Figure 5 It is the side - view structure diagram of the corn picker;

[0041] Figure 6 It is the structure diagram of the corn grain tank;

[0042] Figure 7 It is the side - view structure diagram of the corn buffer device part;

[0043] Figure 8 It is the rear - view structure diagram of the corn buffer device part;

[0044] Figure 9 is a three-dimensional structure diagram of the corn buffer device part;

[0045] Figure 10 is a harvesting route map of the harvesting method in an embodiment;

[0046] Figure 11 is a harvesting route map of the last 5 groups of soybean-corn combinations in the preferred embodiment.

[0047] In the figure: 1 - mobile vehicle body; 11 - cab; 2 - combined cutting table part; 21 - main support; 22 - soybean cutting table; 221 - first support; 222 - reel; 223 - soybean conveying auger; 23 - corn ear picking table; 231 - second support; 232 - pulling stem roller; 233 - feeding wheel; 234 - corn ear conveying auger; 235 - straw chopping roller; 236 - transmission box; 237 - hydraulic motor; 238 - dividing harrow; 239 - auxiliary feeding roller; 230 - main transmission box; 24 - second angle adjustment mechanism; 31 - corn conveying device; 32 - soybean conveying device; 41 - corn grain box; 42 - soybean grain box; 421 - main box body; 422 - grain discharging opening; 43 - corn buffer device; 431 - base plate; 432 - buffer plate; 433 - buffer spring; 434 - first hinge seat; 435 - second hinge seat; 436 - pneumatic telescopic rod; 437 - seat plate; 44 - guiding and sliding device; 441 - guide rod; 442 - sliding sleeve; 45 - driving mechanism; 451 - gear; 452 - rack; 453 - gear shaft; 454 - cage; 455 - lead screw; 456 - lead screw nut; 457 - bevel gear set; 5 - threshing device; 6 - soybean cleaning device; 7 - soybean kernel elevator. Detailed implementation manners

[0048] The present invention will be further described below with reference to the accompanying drawings.

[0049] As Figure 1 shown, a two-channel combined harvester suitable for strip intercropping of soybean and corn includes a mobile vehicle body 1 and a combined cutting table part 2 mounted on the mobile vehicle body 1; a cab 11 is provided on the mobile vehicle body 1. As Figure 2As shown, the combined header part 2 includes a main support 21; a soybean header 22 and a corn picker header 23 are installed on the main support 21, and the two are respectively connected to a corn grain box 41 and a soybean grain box 42 through a corn conveying device 31 and a soybean conveying device 32; preferably, a soybean threshing device 5 and a soybean cleaning device 6 are arranged between the soybean conveying device 32 and the soybean grain box 42; the soybean header 22 and the corn picker header 23 are arranged in a front-back and up-down offset manner to avoid interference between the soybean and corn projects. The main support 21 is rotatably installed on the mobile vehicle body 1, and a first angle adjustment mechanism is installed between the two; the soybean header 22 has a first support 221 fixed relative to the main support 21; the corn picker header 23 includes a second support 231; the second support 231 is rotatably installed relative to the main support 21, and a second angle adjustment mechanism 24 is arranged between the two.

[0050] Both the above-mentioned first angle adjustment mechanism and the second angle adjustment mechanism 24 are oil cylinders. Compared with the prior art, in this application, by setting the second angle adjustment mechanism 24, the angle of the corn picker header 23 can be dynamically adjusted relative to the main support 21. In this way, the problem that the soybean header and the corn picker header in the prior art operate synchronously and it is difficult to adapt to the actual situation in real time can be solved. Through the first angle adjustment mechanism, the entire combined header part 2 can be lifted in a large range as a whole, which is convenient for harvesting height control and transportation. At the same time, the corn picker header 23 is connected to the main support 21 through the second angle adjustment mechanism 24 and can be individually controlled for lifting.

[0051] The corn picker header 23 is arranged backward and upward relative to the soybean header 22, so as to avoid corn kernels from entering the soybean harvesting system.

[0052] The corn grain box 41 and the soybean grain box 42 are arranged in the left-right direction. In this way, the overall length of the machine can be effectively shortened and the center of gravity of the machine can be stabilized. In contrast, in the prior art, generally, the soybean and corn grain bins are arranged front and back, and the overall length of the machine is too long and the center of gravity is unstable.

[0053] Preferably, the soybean header 22 includes a reel 222 and a horizontal soybean conveying auger 223 (as Figure 3 shown), and the soybean conveying auger 223 is connected to the soybean conveying device 32. The soybean header 22 is a narrow-width header, suitable for harvesting 4-row soybeans with a row spacing of 30 cm. The bottom plate of the header is hollowed out to avoid soil entering the header. The divider far from the corn picker header 23 adopts a large-angle vertical outward-pushing divider to avoid the impact of harvesting soybeans on adjacent corn.

[0054] Preferably, as Figures 4-5The shown corn ear picker 23 includes two groups of ear picking devices; each group of ear picking devices includes two rollers rotatably mounted on the second bracket 231 and arranged in parallel with each other, namely an auxiliary feeding roller 239 and a stalk pulling roller 232. Both rollers have spiral protrusions, and the spiral protrusions on the two rollers have opposite helix directions. A channel for the corn stalk part to enter is formed between the two rollers; a dialing wheel 233 and a row divider 238 are installed at the front end of the channel, and a horizontally arranged corn ear conveying auger 234 is installed below the rear side of the channel. The corn ear conveying auger 234 is connected to the corn conveying device 31; a straw chopping roller 235 is also installed below the ear picking device.

[0055] The two rollers included in each group of the ear picking devices are both connected to the same transmission box 236, and the transmission box 236 makes the two rollers rotate at the same speed in opposite directions; the transmission box 236 is driven by a hydraulic motor 237, and the hydraulic motor 237 transmits power to the transmission box 236 through the main transmission box 230. The above-mentioned corn ear picker 23 can harvest two rows of corn with a row spacing of 30 - 60 cm at the same time. The row divider 238 is a large-angle outward-turning row dividing device, which can ensure the smooth feeding of corn.

[0056] Preferably, when the corn ear is thrown out from the throwing outlet of the corn conveying device 31 and falls into the corn grain box 41, it usually accelerates under the action of gravity and then impacts with the metal plate of the lower box body or the corn ear, which will greatly cause damage to the corn and affect the corn harvesting quality. To solve the above problems, as Figure 6 shown, a corn buffer device 43 is installed in the corn grain box 41. As Figure 7 shown, the corn buffer device 43 includes a base plate 431; a buffer plate 432 is installed on the base plate 431, and a buffer spring 433 is installed between the two. The buffer plate 432 is a rubber plate.

[0057] The corn buffer device 43 further includes a seat plate 437, a first hinge seat 434 mounted on the seat plate 437, and a second hinge seat 435 mounted on the base plate 431. A pneumatic telescopic rod 436 is connected between the two hinge seats, and both ends of the pneumatic telescopic rod 436 are in a hinge relationship with the two hinge seats; the base plate 431 is rotatably mounted relative to the seat plate 437. In the above-mentioned corn buffer device 43, the elastic action of the buffer spring 433 and the buffer plate 432 constitutes the first layer of buffering, and the buffering action of the pneumatic telescopic rod 436 forms the second layer of buffering. The two layers of buffering can effectively absorb the kinetic energy of the moving object and achieve rapid deceleration. Thus, after the corn ear is thrown out, it is decelerated by the corn buffer device 43 during the falling process, and the corn ear can gently fall to the bottom of the grain bin at a lower speed, reducing the breakage caused during the corn collection process. In addition, the corn grain bin 41 is rotatably mounted relative to the moving vehicle body 1, and it can be flipped relative to the moving vehicle body 1 to unload the corn ears therein. An actuator such as an oil cylinder can be provided between the corn grain bin 41 and the moving vehicle body 1 to realize the self-flipping of the corn grain bin 41.

[0058] Preferably, as Figures 7-9 shown, the seat plate 437 can slide up and down relative to the corn grain bin 41, and a guide sliding device 44 is provided between the two. The guide sliding device 44 includes a guide rod 441 fixed relative to the corn grain bin 41 and a sliding sleeve 442 mounted on the seat plate 437;

[0059] A driving mechanism 45 is further provided between the corn buffer device 43 and the corn grain bin 41; the driving mechanism 45 includes a gear 451, a rack 452, a gear shaft 453 and a one-way clutch; the gear 451 and the rack 452 are meshed with each other, and both are rotatably mounted relative to the seat plate 437 and the base plate 431 respectively. A cage 454 coaxial with the gear 451 is further provided on the seat plate 437, and the cage 454 keeps the gear 451 and the rack 452 in mesh; the one-way clutch is mounted between the gear 451 and the gear shaft 453; the driving mechanism 45 further includes a lead screw 455 installed in the corn grain bin 41 and a lead screw nut 456 rotatably mounted on the seat plate 437; a transmission relationship is established between the gear shaft 453 and the lead screw nut 456 through a bevel gear set 457.

[0060] With the above structure, the corn buffer device 43 can be gradually lifted as the accumulation amount of corn in the corn grain bin 41 increases due to the impact force of the corn. The specific process is as follows:

[0061] Initially, the corn buffer device 43 is in the low position, and the lead screw 455 is locked relative to the corn bin 41 and cannot rotate; when the corn cobs fall into the corn bin 41, an impact is generated on the corn buffer device 43, the pneumatic telescopic rod 436 expands and contracts, and the rack 452 also moves relative to the gear 451. Under the action of the one-way clutch, during the process of the pneumatic telescopic rod 436 being compressed, the rack 452 causes the gear 451 to rotate, and the gear 451 causes the gear shaft 453 to rotate through the one-way clutch, thereby driving the lead screw nut 456 to rotate relative to the lead screw 455, causing the corn buffer device 43 to rise; during the process of the pneumatic telescopic rod 436 resetting the substrate 431 upward, the rotation of the gear 451 does not cause the gear shaft 453 to rotate, and the self-locking characteristic between the lead screw 455 and the lead screw nut 456 keeps the height of the corn buffer device 43 unchanged. Thus, as more and more corn cobs enter the corn bin 41 via the corn buffer device 43, the position of the corn buffer device 43 can gradually rise. Thus, in the initial state, the corn buffer device 43 can be installed at a lower position, so that the corn will not fall to the bottom of the bin after a long distance after leaving the corn buffer device 43. In addition, the corn buffer device 43 can rise with the accumulation amount of the corn in the bin to ensure the buffering effect. After the corn is emptied from the bin, the lead screw 455 can be unlocked, and the lead screw nut 456 can be fixed relative to the seat plate 437. Thus, rotating the lead screw 455 can make the corn buffer device 43 drop to the low position again.

[0062] Preferably, the soybean bin 42 includes a square main box body 421 and a grain discharging port 422 located below the main box body 421; the grain discharging port 422 is in a four-sided cone shape, and the stacking angles of its left and right side surfaces are both α1, and the stacking angles of its front and rear side surfaces are α2 and α3 respectively; α1 = 135°, α2 = 135°, α3 = 72°.

[0063] During operation, the combined header part 2 harvests soybeans and corn simultaneously. After the soybean header 22 harvests 4 rows of soybeans, the harvested soybeans are conveyed to the soybean threshing device 5 via the soybean conveying device 32. After being threshed by the soybean threshing device 5, the soybean straw is thrown out at the rear of the threshing device 5, and the soybean grains and some impurities fall onto the soybean cleaning device 6 for cleaning operation. The soybean cleaning device 6 is equipped with a grain conveying auger and a soybean grain elevator. After the cleaning operation, the impurities are thrown out from the rear of the soybean cleaning device 6, and the soybean grains enter the grain conveying auger and are conveyed to the soybean grain tank 42 by the soybean grain elevator 7, thus completing a series of operations of harvesting - threshing - cleaning - collecting for the soybean part; while the soybeans are being harvested, the corn picker header 23 harvests 2 rows of corn. The whole corn plants are pulled backward through the feeding wheel 233 and the auxiliary feeding roller 239. The two side stalk pulling rollers 232 rotate in opposite directions to pick the corn ears, and the corn ears are collected and conveyed to the feeding port of the corn conveying device 31 by the corn ear conveying auger 234. At the same time, the corn straw continuously moves downward under the action of the rotational force of the stalk pulling rollers 232 and is pulverized and returned to the field through the straw chopping roller 235; the corn ears are collected and conveyed to the feeding port of the corn conveying device 31 by the corn ear conveying auger 234, and fall onto the conveyor belt of the corn conveying device 31 under the action of gravity and are conveyed backward, and fall into the corn grain tank 41 at the corn discharge port. During the process of falling into the corn grain tank 41, the corn buffer device decelerates it so that it finally falls into the grain tank at a lower speed.

[0064] A dual-channel combined harvesting method suitable for strip intercropping of soybeans and corn, as Figure 10 shown, the method includes:

[0065] (a) Operating the combined harvester to perform multiple rounds of cyclic harvesting operations on the current operation area. In each round of harvesting operation, the combined harvester first harvests the soybean-corn crop combination at one end of the remaining crops in the operation area, and then harvests the soybean-corn crop combination at the other end of the remaining crops; wherein, each group of soybean-corn crop combinations contains m rows of soybeans and n rows of corn. In the present invention, m = 4 and n = 2.

[0066] When the remaining crops cannot form a complete soybean-corn crop combination, the remaining crops are harvested using the corresponding header in the combined header part 2 according to the type of crops.

[0067] As Figure 10 shown, when harvesting using the above method, the combined harvester moves along a figure-eight shape, without the need to frequently turn around, which greatly facilitates harvesting and can effectively save harvesting time.

[0068] In a preferred embodiment, in most of the central area of the operation area, the crops are planted in rows to form multiple planting rows, and at least one group of crop combinations planted in columns is planted on each side of the operation area. Each group of crop combinations contains m columns of soybeans and n columns of corn. In this embodiment, m = 4 and n = 2, that is,Figure 10 On the basis of this, at least one set of horizontal crop combinations is planted on both the upper and lower sides. In this way, when harvesting, the combine harvester can first harvest at least one circle along the outer contour of the working area in the working area (the number of harvested circles is the same as the number of sets of crop combinations planted on each side), so as to form empty walking areas on both sides of the working area, which is convenient for subsequent implementation of the method in part (a) above.

[0069] In a preferred embodiment, when the number of remaining soybean-corn crop combinations in the working area is less than a predetermined value, the harvesting operation is stopped according to the method in part (a) above, and the harvesting operation is carried out according to a new harvesting method. The rule of the new harvesting method is: there is at least one set of soybean-corn crop combinations between every two adjacent harvested soybean-corn crop combinations. For example, as Figure 11 shown, when the number of sets of soybean-corn crop combinations is more than 5, the harvesting operation is carried out according to the method in part (a) above. There are 5 remaining sets of soybean-corn crop combinations, numbered 1, 2, 3, 4, and 5 in sequence. The harvesting operation can be carried out in the order of 1, 4, 2, 5, 3. In this way, the operation difficulty of the combine harvester can be reduced.

[0070] The above is only the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A dual-channel combine harvester suitable for strip intercropping of soybean and corn, comprising a mobile vehicle body (1) and a combined cutting table part (2) mounted on the mobile vehicle body (1); The combined cutting table part (2) includes a main support (21); a soybean cutting table (22) and a corn ear picking table (23) are mounted on the main support (21), and the two are respectively connected to a corn grain box (41) and a soybean grain box (42) through a corn conveying device (31) and a soybean conveying device (32); The main support (21) is rotatably mounted on the mobile vehicle body (1), and a first angle adjusting mechanism is mounted between the two; characterized in that: The soybean header (22) has a first bracket (221) fixed relative to the main bracket (21); The corn picker header (23) includes a second bracket (231); the second bracket (231) is rotatably mounted relative to the main bracket (21), and a second angle adjustment mechanism (24) is provided therebetween; A corn buffer device (43) is installed in the corn grain tank (41), and the corn buffer device (43) includes a base plate (431); a buffer plate (432) is installed on the base plate (431), and a buffer spring (433) is installed therebetween; The corn buffer device (43) further includes a seat plate (437), a first hinge seat (434) installed on the seat plate (437), and a second hinge seat (435) installed on the base plate (431), and a pneumatic telescopic rod (436) is connected between the two hinge seats; the base plate (431) is rotatably mounted relative to the seat plate (437); The seat plate (437) can move up and down and slide relative to the corn grain tank (41), and a guiding and sliding device (44) is provided therebetween; A driving mechanism (45) is further provided between the corn buffer device (43) and the corn grain tank (41); the driving mechanism (45) includes a gear (451), a rack (452), a gear shaft (453) and a one-way clutch; the gear (451) and the rack (452) are meshed with each other, and both are rotatably mounted relative to the seat plate (437) and the base plate (431) respectively; the one-way clutch is installed between the gear (451) and the gear shaft (453); the driving mechanism (45) further includes a lead screw (455) installed in the corn grain tank (41) and a lead screw nut (456) rotatably mounted on the seat plate (437); a transmission relationship is established between the gear shaft (453) and the lead screw nut (456) through a bevel gear set (457).

2. The dual-channel combine harvester suitable for strip intercropping of soybean and corn according to claim 1, characterized in that, The corn picker header (23) is arranged backward and upward relative to the soybean header (22).

3. The dual-channel combine harvester suitable for strip intercropping of soybean and corn according to claim 1, characterized in that, The corn grain tank (41) and the soybean grain tank (42) are arranged in the left-right direction.

4. The dual-channel combine harvester suitable for strip intercropping of soybean and corn according to claim 1, characterized in that, The soybean header (22) includes a reel (222) and a transverse soybean conveying auger (223), and the soybean conveying auger (223) is connected to the soybean conveying device (32).

5. The dual-channel combine harvester suitable for strip intercropping of soybean and corn according to claim 1, characterized in that, The corn picker header (23) includes two groups of picking devices; each group of picking devices includes two rollers rotatably mounted on the second bracket (231) and arranged in parallel, namely an auxiliary feeding roller (239) and a stalk pulling roller (232), and a channel for the corn stalk part to enter is formed between the two rollers; a feeding wheel (233) is installed at the front end of the channel, and a transverse corn ear conveying auger (234) is installed below the rear side of the channel; a straw chopping roller (235) is further installed below the picking device; Each of the two roller bodies included in each ear picking device is connected to the same transmission case (236), and the transmission case (236) rotates the two roller bodies at the same speed in opposite directions; the transmission case (236) is driven by a hydraulic motor (237).

6. The dual-channel combine harvester suitable for strip intercropping of soybean and corn according to claim 1, characterized in that, The soybean grain tank (42) includes a square main tank body (421) and a grain discharging opening (422) located below the main tank body (421); the grain discharging opening (422) is in a four-sided cone shape, and the stacking angles of its left and right side surfaces are both α1, and the stacking angles of its front and rear side surfaces are α2 and α3 respectively; α1 = 135°, α2 = 135°, α3 = 72°.

7. A dual-channel combine harvesting method suitable for strip intercropping of soybean and corn, based on the dual-channel combine harvester suitable for strip intercropping of soybean and corn according to claim 1, characterized in that, The method includes: Operating the combine harvester to perform multiple rounds of cyclic harvesting operations on the current operation area. In each round of harvesting operation, the combine harvester first harvests the soybean-corn crop combination at one end of the remaining crops in the operation area, and then harvests the soybean-corn crop combination at the other end of the remaining crops; When the remaining crops cannot form a complete soybean-corn crop combination, the remaining crops are harvested using the corresponding cutter head in the combined cutter head part (2) according to the type of the crops.

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