Multi-stage harvesting assembly for automatic harvesting

Abstract

The utility model discloses a multi-stage harvesting assembly for automatic harvesting, and belongs to the technical field of agricultural machinery. Comprising a collecting roller, a threshing roller, a miscellaneous stalk removing roller, a sieve plate, a material transferring bin, a feeding assembly and a material collecting box. Harvested crops firstly reach the collecting roller to be collected; the collected crops enter a threshing cylinder to be threshed; threshed fruit particles fall into a sieve plate; the separated straws are discharged by the miscellaneous straw discharging roller in a transmission manner; a sieve plate is arranged below the threshing roller and the miscellaneous stalk removing roller; the rear end of the sieve plate is in butt joint with the transfer bin, and fruit particles screened by the sieve plate enter the transfer bin; the material transferring bin is in butt joint with the feeding assembly, and the feeding assembly communicates with the material collecting box. And fruit particles are conveyed into the material receiving box by the feeding assembly. According to the utility model, the problems that the threshing is incomplete and more straw impurities are mixed in fruit particles due to the fact that harvesting process components of the existing miniaturized integrated harvester are too concentrated are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery, and in particular relates to a multi-stage harvesting component for automatic harvesting. Background Art

[0002] A harvester is a one-time harvesting machine for crops. It can harvest and thresh crops in a batch and transport the collected fruits to the storage bin continuously. For plain areas, the land is flat and large harvesting machinery can be used for harvesting operations. However, for some mountainous areas, the land is mostly distributed in mountainous areas, sloping areas and other areas with large terrain undulations and unevenness. For such areas, large harvesting equipment is no longer suitable. Small mountain harvesters are usually equipped with crawler or three-wheeled travel structures due to their small size, which can adapt to climbing or traveling in uneven mountains.

[0003] Generally speaking, a harvester harvests the crop stalks first, then threshes the threshed fruits, and discharges the threshed straw. However, for mountain harvesters, in order to make their volume intensive, threshing and straw removal are usually integrated in the same component. That is to say, after the crops are harvested and enter the machine, the threshing work is completed on the threshing component, and then the straw is discharged during the threshing process. Such an over-integrated operation method has the following defects: 1) Incomplete threshing. After the crop is threshed, the straw is discharged when the threshing reaches the chip discharge port. At this time, it is very likely that the straw is not completely threshed and still contains some fruit particles. 2) Threshing and straw removal are integrated in the same component. Due to the centrifugal force of the threshing drum, some straw may not be discharged from the chip discharge port in time and mix into the fruit particles, resulting in larger straw mixed in the detached fruit particles. A lot of screening work is required after the harvest is completed. Utility Model Content

[0004] The utility model reduces unnecessary component structures inside the harvester as much as possible while taking into account the volume of the harvester. After the internal space of the harvester is released, a crop collecting component, a layer-by-layer separation component and a layer-by-layer straw removal component are integrated according to the harvesting process; the separation and straw removal are set separately to ensure complete separation as much as possible, and the remaining straw is discharged by a separate straw removal component; the utility model solves the problem that the current miniaturized integrated harvester has too concentrated harvesting process components, resulting in incomplete threshing and a large amount of straw impurities mixed in the fruit particles.

[0005] In order to achieve the above technical objectives, the utility model is implemented through the following technical solutions:

[0006] A multi-stage harvesting assembly for automatic harvesting, comprising: a collecting drum, a threshing drum, a miscellaneous stem removal drum, a screen plate, a transfer bin, a feeding assembly, and a receiving box;

[0007] The collecting roller is arranged at the rear side of the feeding assembly, and the harvested crops first reach the collecting roller for collection;

[0008] The threshing drum is arranged at the rear side of the collecting drum, and the collected crops enter the threshing drum for threshing; the threshed fruit particles fall into the sieve plate;

[0009] The straw removal drum is arranged at the rear side of the threshing drum, and the separated straw is driven and discharged by the straw removal drum;

[0010] A sieve plate is arranged below the threshing drum and the waste stem removal drum; the rear end of the sieve plate is connected to the transfer bin, and the fruit particles screened by the sieve plate enter the transfer bin;

[0011] The transfer bin is connected to a feeding assembly, and the feeding assembly is communicated with a receiving box; the fruit particles are transported to the receiving box by the feeding assembly.

[0012] Preferably, the threshing drum is arranged in two stages, the first-stage threshing drum is arranged close to the collecting drum, and the second-stage threshing drum is arranged on the right side of the first stage; the first-stage threshing drum is responsible for loosening the crop fruits and straw transported by the collecting drum, and the second-stage threshing drum is responsible for completely separating the crop fruits and straw loosened by the first stage.

[0013] Preferably, a receiving bottom plate, a threshing filter plate and a debris stem filter are respectively arranged under the collecting drum, the threshing drum and the debris stem removing drum.

[0014] Preferably, a sieve plate is arranged below the threshing filter plate and the rod filter screen; a plurality of inclined step-like structures are evenly distributed on the surface of the sieve plate;

[0015] Screw holes are arranged on both sides of the sieve plate, and screws are arranged in the screw holes; one end of the screw is fixed to the screw hole by a nut, and the other end is slidably arranged in a slide groove provided in the inner wall of the harvester housing;

[0016] The tail ends of the linkage frames are hinged at the middle positions on both sides of the sieve plate, and the head ends of the linkage frames are provided with sieve plate driving components; the sieve plate driving components are used to drive the sieve plate to move back and forth to achieve the screening of fruit particles.

[0017] Preferably, the sieve plate driving assembly comprises: a driving wheel, a driven wheel and a motor;

[0018] The center of the right side of the driving wheel is connected to the rotor of the motor; the driven wheel is rotatably arranged on the left side of the driving wheel and at a position deviated from the center of the driving wheel; the head end of the linkage frame is hinged on the driven wheel.

[0019] Preferably, a leakage plate is arranged above the transfer bin, the leakage plate is composed of a number of strips arranged obliquely at equal intervals, and gaps are formed between the strips; the rear end of the sieve plate is connected to the top of the leakage plate; the fruit particles fall into the transfer bin through the leakage plate.

[0020] Preferably, the bottom plate of the transfer bin is configured as a grid structure, and a pusher gear wheel cylinder is provided below the bottom plate; motor drive components are provided on both sides of the pusher gear wheel cylinder;

[0021] The tooth structure on the push-pull tooth wheel cylinder is partially embedded in the grid, and the embedded tooth is partially exposed from the upper surface of the bottom plate.

[0022] Preferably, the feeding assembly comprises: a feeding cylinder, a feeding screw rod, a feeding channel and a blower;

[0023] The upper end of the feeding cylinder is open, and the opening of the transfer bin is connected to the upper end opening of the feeding cylinder;

[0024] A feeding screw rod is arranged in the feeding cylinder, and both ends of the feeding screw rod are driven to rotate by a motor drive assembly;

[0025] One end surface of the feeding cylinder is open, and the end surface opening is connected to the feeding channel;

[0026] One end of the feeding channel is connected to the material receiving box, and the other end is provided with a blower.

[0027] Preferably, a winnowing machine is arranged on the opposite side of the opening of the transfer bin, and wind-generating blades are arranged inside the winnowing machine, and the wind-generating blades are driven to rotate by a motor drive assembly.

[0028] Preferably, a plurality of evenly distributed threshing claws are arranged on the surface of the threshing drum; each threshing claw is composed of two threshing rods.

[0029] The beneficial effects of the utility model are:

[0030] The multi-stage harvesting assembly for automatic harvesting provided by the utility model can adopt a crawler or a three-wheeled traveling structure to ensure a small volume, and is suitable for mountain operations. At the same time, a process-oriented multi-stage harvesting assembly is arranged inside the harvester, which respectively includes collecting, threshing and straw discharge; and the threshing is also divided into two stages, the first stage is for pre-loosening, and the second stage is for threshing, which is conducive to the fruit particles being separated as completely as possible; in addition, the separation and the straw discharge are arranged separately to avoid incomplete separation and to avoid mixing more straw into the fruit;

[0031] The sieve plate provided in the utility model adopts a screening method of reciprocating movement back and forth, rather than a vibrating screening method; and a plurality of inclined stepped structures are evenly distributed on the surface of the sieve plate. During the reciprocating movement, large particles of fruit are located in the upper layer and gradually move forward during the reciprocating movement of the sieve plate, and small particles of soil are dropped to the lower layer and can be accumulated at the inclined corners of the steps, thereby completing the layer-by-layer screening of fruit particles and soil on the stepped structure, and finally screening out fruit particles with soil impurities.

[0032] The utility model has a grid structure and a pusher gear wheel cylinder on the bottom surface of the transfer bin; when fruit particles fall into the transfer bin, the rotation of the pusher gear wheel cylinder can push the fruit particles forward and fall into the feeding cylinder, thereby preventing the fruit particles from falling into the transfer bin and accumulating in large quantities. In addition, the pusher gear wheel cylinder can also disperse the fruit particles accumulated in the transfer bin.

[0033] The utility model provides an air separator on the opposite side of the transfer bin, which forms a moderate wind force and blows the fruit particles in the transfer bin by wind flow, so that the fine straw or soil mixed in the fruit particles can be removed and screened again. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0036] Figure 2 It is a schematic diagram of the three-stage harvesting structure of the utility model for collecting, threshing and removing the debris stems;

[0037] Figure 3 It is a schematic diagram of the structure of the screen plate and the drain plate of the utility model;

[0038] Figure 4 This is a schematic diagram of the structure of the material transfer bin grid and the material pushing gear wheel cylinder of the utility model;

[0039] Figure 5 This is a schematic diagram of the screen plate and linkage frame structure of the utility model. Figure 1 ;

[0040] Figure 6 This is a schematic diagram of the screen plate and linkage frame structure of the utility model. Figure 2 ;

[0041] Figure 7It is a schematic diagram of the structure of the linkage frame and the screen plate driving assembly of the utility model;

[0042] Figure 8 It is a schematic diagram of the structure of the screen plate driving assembly of the utility model;

[0043] Fig. 9 It is a schematic diagram of the structure of the threshing claws on the detachment roller of the utility model;

[0044] In the accompanying drawings, the structural names represented by the reference numerals are:

[0045] 1-collecting roller, 2-receiving bottom plate, 3-threshing roller, 301-threshing claw, 4-threshing filter plate, 5-miscellaneous rod removal roller, 6-miscellaneous rod filter, 7-sieve plate, 701-screw hole, 8-linkage frame, 9-driving wheel, 10-driven wheel, 11-leakage plate, 12-transfer bin, 1201-grid, 13-pushing gear wheel cylinder, 14-feeding cylinder, 15-feeding screw rod, 16-feeding channel, 1601-blower, 17-collecting box, 18-air separator. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] Example 1

[0048] A multi-stage harvesting assembly for automatic harvesting, comprising: a collecting drum 1, a threshing drum 3, a waste stem removal drum 5, a sieve plate 7, a transfer bin 12, a feeding assembly, and a receiving box 17;

[0049] like Figure 1 As shown, a collecting drum 1 is docked at the discharge port of the feeding assembly on the harvester, and a motor drive assembly is arranged at the shaft rods at the axis center on both sides of the collecting drum 1. The motor drive assembly can drive the collecting drum 1 to rotate. In this embodiment, the structure of the collecting drum 1 is an axis rod at the axis center, and a plurality of circular rings are arranged at equal intervals on the shaft rod, and a plurality of cross bars parallel to the shaft rod are evenly distributed on the circular rings; a receiving bottom plate 2 is arranged below the collecting drum 1;

[0050] The feeding component completes the primary harvesting of the crops from the land. The harvested crops reach the collecting drum 1 through the discharge port of the feeding component. The collecting drum 1 rotates to drive the crops to the next process for threshing. Some crops that fall on the receiving bottom plate 2 can be conveyed to the threshing process under the repeated rotation of the collecting drum 1.

[0051] A threshing drum 3 is arranged at the rear side of the collecting drum 1. Similarly, motor drive components are arranged at the shafts at the axis centers on both sides of the threshing drum 3, and the motor drive components can drive the threshing drum 3 to rotate; a plurality of evenly distributed threshing claws 301 are arranged on the surface of the threshing drum 3; each threshing claw 301 is composed of two threshing rods; during the rotation of the threshing drum 3, the threshing claws 301 brush the surface of the crop to separate the fruit particles on the crop from the straw; generally, the higher the density of the threshing claws 301 arranged on the surface of the threshing drum 3, the better the threshing effect on the crop;

[0052] A threshing filter plate 4 is arranged below the threshing drum 3, and the fallen fruit particles pass through the threshing filter plate 4 and fall onto the sieve plate 7 below; the mesh size of the threshing filter plate 4 can pass the fruit particles, but some larger straws cannot pass through, thereby preventing larger straw impurities from being mixed into the fruit particles;

[0053] In this embodiment, a two-stage threshing drum 3 is provided. The crops pass through the first-stage threshing drum 3. Under the action of the first-stage threshing drum 3, the connection between the fruit particles and the straw can be pre-loosened, so that the next stage can easily thresh. Of course, under the action of the first-stage threshing drum 3, a small part of the fruit will be detached, and this part of the fruit particles will reach the sieve plate 7 through the threshing filter plate 4. The crops passing through the first-stage threshing drum 3 are transmitted to the second-stage threshing drum 3. Under the action of the second-stage threshing drum 3, the fruit particles will be separated from the straw as completely as possible.

[0054] A waste stem removal drum 5 is arranged at the rear side of the threshing drum 3. The structure of the waste stem removal drum 5 is similar to that of the collecting drum 1. A shaft is arranged in the middle, and a plurality of circular ring structures are arranged at equal intervals on the shaft. A plurality of cross bars parallel to the shaft are evenly distributed on the surface of the circular ring structure. When the waste stem removal drum 5 rotates, the straw can be driven forward by the waste stem removal drum 5 until it is discharged from the harvester from the chip discharge port.

[0055] Motor drive components are also arranged at the shafts at both ends of the debris rod removing roller 5; driven by the motor drive components, the debris rod removing roller 5 can rotate.

[0056] In this embodiment, three groups of debris stem removal rollers 5 are provided. On the one hand, the three groups of debris stem removal rollers 5 are conducive to the discharge of the straw as completely as possible. On the other hand, a small amount of fruit may be attached to the straw after passing through the threshing rollers 3. After the rolling action of the debris stem removal rollers 5, this small amount of fruit particles will further fall off.

[0057] like Figure 2As shown, a sieve plate 7 is arranged below the threshing drum 3 and the impurity rod removal drum 5. The function of the sieve plate 7 is to push the fruit particles forward and fall into the transfer bin 12. At the same time, the silt impurities in the fruit particles can also be screened.

[0058] In this embodiment, the sieve plate 7 is set to move back and forth to achieve the screening effect; the linkage frame 8 structure connected to the sieve plate 7 and the linkage frame driving structure drive the sieve plate 7 to move back and forth, simulating the manual screening action of a person;

[0059] like Figure 6 As shown, screw holes 701 are provided on both sides of the sieve plate 7, and screws are provided in the screw holes 701; one end of the screw is fixed to the screw hole 701 by a nut, and the other end is slidably provided in a slide groove provided on the inner wall of the harvester housing; the cooperation between the screw and the slide groove, on the one hand, does not affect the forward and backward reciprocating movement of the sieve plate 7, and on the other hand, plays a limiting role in the movement of the sieve plate 7;

[0060] The tail ends of the linkage frames 8 are hinged at the middle positions on both sides of the sieve plate 7, and the head ends of the linkage frames 8 are provided with sieve plate driving components; the sieve plate driving components are used to drive the sieve plate 7 to move back and forth to achieve the screening of fruit particles;

[0061] like Figure 7 and Figure 8 As shown, the above-mentioned screen plate driving assembly includes: a driving wheel 9, a driven wheel 10 and a motor;

[0062] The rotor of the motor is connected at the center of the right side of the driving wheel 9; a driven wheel 10 is rotatably arranged on the left side of the driving wheel 9 and deviated from the center of the driving wheel 9; the head end of the linkage frame 8 is hinged on the driven wheel 10; the motor drives the driving wheel 9 to rotate, and the driving wheel 9 can drive the driven wheel 10 to rotate eccentrically, and the linkage frame 8 connected to the driven wheel 10 realizes reciprocating movement back and forth under the drive of the driven wheel 10, and the linkage frame 8 drives the screen plate 7 to reciprocate back and forth, thereby simulating the manual screening action of a person; during the screening process, the fruit particles gradually move forward, and finally the fruit particles can fall into the transfer bin 12;

[0063] like Figure 3 As shown, the rear end of the sieve plate 7 is connected to the transfer bin 12, and a leak plate 11 is arranged above the transfer bin 12. The leak plate 11 is composed of a number of strips arranged at equal intervals, and gaps are formed between the strips. The rear end of the sieve plate 7 is connected to the leak plate 11 above the transfer bin 12. The fruit particles can fall into the transfer bin 12 from the gaps along the inclined strip structure.

[0064] The fruit particles falling into the transfer bin 12 will enter the feeding cylinder 14 connected to the transfer bin 12. Figure 5As shown, there is an opening structure above the feeding barrel 14, and the fruit particles in the transfer bin 12 enter the feeding barrel 14 through the opening structure; one end face of the feeding barrel 14 is an opening structure, and a feeding screw rod 15 is arranged in the feeding barrel 14; the opening structure on the end face of the feeding barrel 14 is connected with the feeding channel 16; one end of the feeding channel 16 is connected to the receiving box 17, and a blower 1601 is arranged at the other end; the fruit particles enter the feeding barrel 14, and the feeding screw rod 15 rotates under the drive of the motor drive assembly, and the rotating feeding screw rod 15 can drive the fruit particles to enter the feeding channel 16 from the opening on the end face of the feeding barrel 14, and after the fruit particles enter the feeding channel 16, they will enter the receiving box 17 along the feeding channel 16 under the blowing of the wind force of the blower 1601.

[0065] Example 2

[0066] Based on Example 1, in Example 1, the surface of the sieve plate 7 has no structural features. During the reciprocating movement of the sieve plate 7, the fruit particles are driven forward, and although the soil or broken straws are screened to a certain extent, the impurities will move together with the fruit particles as the sieve plate 7 reciprocates. It is very likely that part of the impurities will enter the transfer bin 12 together with the fruit particles.

[0067] As a preferred embodiment, Figure 3 As shown, in this embodiment, a plurality of inclined step structures are evenly distributed on the surface of the sieve plate 7; when the fruit particles are pushed on the surface of the sieve plate 7 with the inclined step structure, the mud and fine impurities fall to the lower layer and accumulate at the inclined corners of the steps. As the sieve plate 7 continuously moves back and forth, the fruit particles are gradually pushed forward, and the impurities are gradually accumulated on the step structure. This can prevent the fruit particles from being mixed with too much mud or impurities.

[0068] Example 3

[0069] Based on the embodiment 1, a leak plate 11 is arranged above the transfer bin 12 in the embodiment 1, and the fruit particles enter the transfer bin 12 through the leak plate 11, and the fruit particles gradually accumulate in the transfer bin 12. After a certain amount of accumulation, the fruit particles overflow and fall into the feeding tube 14; this will cause a large amount of fruit particles to accumulate in the transfer bin 12 all the time, and it is not conducive to the fruit particles in the transfer bin 12 to enter the feeding tube 14;

[0070] So, if Figure 4 As shown, in this embodiment, the bottom plate of the transfer bin 12 is set as a grid 1201 structure, and a push gear wheel cylinder 13 is set below the bottom plate; the push gear wheel cylinder 13 is composed of a plurality of gears connected in series at equal intervals on an axle rod; motor drive components are set on both sides of the push gear wheel cylinder 13; the motor drive component can drive the push gear wheel cylinder 13 to rotate.

[0071] The tooth structure on the pusher tooth wheel cylinder 13 is partially embedded in the grid 1201, and the tooth embedded in the grid 1201 is partially exposed from the upper surface of the bottom plate.

[0072] The fruit particles fall into the transfer bin 12, and the pusher gear wheel cylinder 13 rotates to push the fruit particles accumulated in the transfer bin 12 and promote the fruit particles to enter the feed cylinder 14; at the same time, the rotation of the pusher gear wheel cylinder 13 can also disperse the accumulated fruit particles.

[0073] Example 4

[0074] Based on Example 3, a winnowing machine 18 is arranged on the opposite side of the opening of the transfer bin 12 in Example 3, and a wind-generating blade is arranged in the winnowing machine 18, and the wind-generating blade is driven to rotate by a motor drive assembly; the rotation of the wind-generating blade can generate wind from the winnowing machine 18 and blow toward the opening of the transfer bin 12;

[0075] It can be seen from Example 3 that the push gear wheel cylinder 13 below the transfer bin 12 not only pushes the accumulated fruit particles into the feed barrel 14, but also disperses the accumulated fruit particles; breaks up the fruit particles, and then cooperates with the wind force generated by the opposite side winnowing machine 18 to remove the fine impurities and soil mixed in the fruit particles in the transfer bin 12 again; and minimizes the impurities mixed in the fruit particles that finally enter the receiving box 17.

[0076] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0077] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-stage harvesting assembly for automatic harvesting, characterized in that: include: Collecting drum, threshing drum, debris rod removal drum, screen plate, transfer bin, feeding assembly, and receiving box; The collecting roller is arranged at the rear side of the feeding assembly; the collecting roller is used to collect the crops delivered by the feeding assembly; The threshing drum is arranged at the rear side of the collecting drum; The debris rod removal roller is arranged at the rear side of the threshing roller; the debris rod removal roller is used to discharge the debris rods after threshing; A sieve plate is arranged below the threshing drum and the waste stem removal drum; the rear end of the sieve plate is connected to the transfer bin; the fruit particles enter the transfer bin through the sieve plate; The transfer bin is connected to a feeding assembly, and the feeding assembly is communicated with a receiving box; the fruit particles are transported to the receiving box by the feeding assembly.

2. A multi-stage harvesting assembly for automatic harvesting according to claim 1, characterized in that: The threshing drum is arranged in two stages, the first-stage threshing drum is arranged close to the collecting drum, and the second-stage threshing drum is arranged on the right side of the first stage.

3. A multi-stage harvesting assembly for automatic harvesting according to claim 1, characterized in that: A receiving bottom plate, a threshing filter plate and a debris stem filter screen are respectively arranged below the collecting drum, the threshing drum and the debris stem removing drum.

4. A multi-stage harvesting assembly for automatic harvesting according to claim 3, characterized in that: A sieve plate is arranged below the threshing filter plate and the rod filter screen; a plurality of inclined step-shaped structures are evenly distributed on the surface of the sieve plate; Screw holes are arranged on both sides of the sieve plate, and screws are arranged in the screw holes; one end of the screw is fixed to the screw hole by a nut, and the other end is slidably arranged in a slide groove provided in the inner wall of the harvester housing; The tail ends of the linkage frames are hinged at the middle positions on both sides of the sieve plate, and the head ends of the linkage frames are provided with sieve plate driving components; the sieve plate driving components are used to drive the sieve plate to move back and forth to achieve the screening of fruit particles.

5. A multi-stage harvesting assembly for automatic harvesting according to claim 4, characterized in that: The sieve plate driving assembly comprises: a driving wheel, a driven wheel and a motor; The center of the right side of the driving wheel is connected to the rotor of the motor; the driven wheel is rotatably arranged on the left side of the driving wheel and at a position deviated from the center of the driving wheel; the head end of the linkage frame is hinged on the driven wheel.

6. A multi-stage harvesting assembly for automatic harvesting according to claim 1, characterized in that: A leak plate is arranged above the transfer bin, and the leak plate is composed of a number of strips arranged at equal intervals and inclined, with gaps formed between the strips; The rear end of the sieve plate is connected to the top of the leaking plate; the fruit particles fall into the transfer bin through the leaking plate.

7. A multi-stage harvesting assembly for automatic harvesting according to claim 6, characterized in that: The bottom plate of the transfer bin is arranged as a grid structure, and a pusher gear wheel cylinder is arranged below the bottom plate; motor drive components are arranged on both sides of the pusher gear wheel cylinder; The tooth structure on the pusher tooth wheel cylinder is partially embedded in the grid, and the embedded tooth is partially exposed from the upper surface of the bottom plate.

8. The multi-stage harvesting assembly for automatic harvesting according to claim 1, characterized in that: The feeding assembly comprises: a feeding cylinder, a feeding screw rod, a feeding channel and a blower; The upper end of the feeding cylinder is open, and the opening of the transfer bin is connected to the upper end opening of the feeding cylinder; A feeding screw rod is arranged in the feeding cylinder, and both ends of the feeding screw rod are driven to rotate by a motor drive assembly; One end surface of the feeding cylinder is open, and the end surface opening is connected to the feeding channel; One end of the feeding channel is connected to the material receiving box, and the other end is provided with a blower.

9. A multi-stage harvesting assembly for automatic harvesting according to claim 8, characterized in that: An air separator is arranged on the opposite side of the opening of the transfer bin, and wind-generating blades are arranged inside the air separator. The wind-generating blades are driven to rotate by a motor driving assembly.

10. The multi-stage harvesting assembly for automatic harvesting according to claim 1, characterized in that: A plurality of evenly distributed threshing claws are arranged on the surface of the threshing drum; each threshing claw is composed of two threshing rods.

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