Screening and collecting device of rhizome crop harvester

Abstract

The utility model relates to a screening and collecting device of a root-tuber crop harvester, which comprises a rack, a first screening and conveying mechanism, a second screening and conveying mechanism and a collecting mechanism, and the first screening and conveying mechanism, the second screening and conveying mechanism and the collecting mechanism are sequentially connected to the rack from front to back. The first screening and conveying mechanism comprises a third conveying component rotationally connected with the rack, and the second screening and conveying mechanism comprises a sixth conveying component rotationally connected with the rack. The root crop screening and collecting device has the advantages of improving the screening efficiency and collecting efficiency of root crops and reducing the labor intensity of farmers.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to the technical field of root crop harvesters, and specifically refers to a screening and collecting device for a root crop harvester. Background Art

[0002] When harvesting shallow root crops such as potatoes and sweet potatoes, they used to need to be dug, picked up and collected manually because they are located under the soil, which resulted in low labor efficiency and high labor intensity.

[0003] With the advancement of agricultural modernization, some root crop harvesters have gradually appeared on the market. The root crop harvesters can dig out the root crops from the soil and automatically transport them to the equipment, which greatly improves the digging efficiency of the root crops and reduces the labor intensity of farmers.

[0004] However, when the existing root crop harvesters dig and harvest root crops from the soil, the outside of the root crops will inevitably be wrapped with sand, stones, weeds and other debris. Therefore, it is necessary to manually screen and sort the root crops next to the conveying device of the root crop harvester. Since the digging and conveying speed of the root crop harvester is relatively fast, the workload of manual screening and sorting is huge, so it is often necessary to cooperate with multiple people to screen and sort the root crops. Not only is the labor intensity high and the labor efficiency low, but there are also high safety hazards and greater risks due to the direct operation on the conveying device. At the same time, even if multiple people cooperate in screening and sorting, when harvesting in cultivated land with low root crop yield, due to the very high proportion of debris in the harvest, some root crops that cannot be screened and sorted in time will be returned to the field with the debris, resulting in waste of root crops and reducing the harvest rate of root crops.

[0005] In addition, in order to facilitate transportation, the root crops that have been screened and sorted need to be put into storage bags or storage baskets on the root crop harvester first. When the root crops are bagged or basketed, and when the root crops are subsequently transferred from the root crop harvester to the transfer vehicle, manual operation is required, which is time-consuming and labor-intensive, greatly increasing the labor intensity and labor efficiency of agricultural friends. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a screening and collecting device for a root crop harvester, which can improve the screening efficiency and collection efficiency of root crops when harvesting root crops and reduce the labor intensity of farmers.

[0007] The utility model is realized through the following technical scheme, and provides a screening and collecting device for a root crop harvester, comprising a frame, a first screening and conveying mechanism, a second screening and conveying mechanism, and a collecting mechanism. The first screening and conveying mechanism, the second screening and conveying mechanism, and the collecting mechanism are sequentially connected to the frame in order from front to back. The first screening and conveying mechanism includes a third conveying component rotatably connected to the frame, and the second screening and conveying mechanism includes a sixth conveying component rotatably connected to the frame.

[0008] Compared with the prior art, the beneficial effect of the present invention is that: through the third conveying component of the first screening and conveying mechanism, while conveying the harvest, the stones, sand, weeds and other debris can be dropped from the third conveying component to the field, thereby preliminarily screening the sand, stones, weeds and other debris in the harvest; through the sixth conveying component of the second screening and conveying mechanism, the harvest that has completed the preliminary screening can be screened again, so that the remaining stones, sand, weeds and other debris in the harvest can be dropped from the sixth conveying component to the field, so that the root crops and stones, sand, weeds and other debris can be finally separated, which is different from the traditional manual screening and sorting. In comparison, the entire process does not require human intervention, the removal rate of debris in the harvest is higher, and the root crops can be transported during screening, which greatly improves the screening quality and screening efficiency of the root crops, reduces the labor intensity and danger of farmers, saves labor costs, reduces the harvesting cost of root crops, and reduces the waste of root crops due to failure to screen and sort in time, thereby improving the harvest rate of root crops. The screened root crops are transported to the collection mechanism through the sixth conveying component for automatic collection, further reducing the labor intensity of farmers and improving the collection and transportation efficiency of root crops.

[0009] Preferably, the third conveying component is arranged at an angle, and the sixth conveying component is arranged horizontally or at an angle.

[0010] The beneficial effect of adopting the above-mentioned preferred technical solution is that: since the third conveying component is set at an angle and the sixth conveying component is set horizontally or at an angle, the length of the first screening and conveying mechanism and the second screening and conveying mechanism can be extended without lengthening the overall length of the root crop harvester, thereby increasing the screening time of the harvested material, thereby further improving the screening quality of the harvested material.

[0011] Preferably, the first screening and conveying mechanism further includes a first vibrating component rotatably connected to the frame, and the second screening and conveying mechanism further includes a second vibrating component rotatably connected to the frame.

[0012] The beneficial effect of adopting the above-mentioned preferred technical solution is that: through the first vibrating component and the second vibrating component, the harvest carrying surface of the third conveying component and the sixth conveying component can be vibrated, which is conducive to the sand, gravel and other debris falling from the third conveying component and the sixth conveying component, thereby further improving the screening quality of sand, gravel and other debris in the harvest.

[0013] Preferably, the first screening and conveying mechanism also includes a second conveying component, a first grass collecting component, and a second grass collecting component. The second conveying component and the first grass collecting component are respectively rotatably connected to the frame. The height of the axis of the first grass collecting component is lower than the height of the axis of the second conveying component. One end of the second grass collecting component is connected to the frame.

[0014] Preferably, the first screening and conveying mechanism further includes a first power device, the first grass collecting component is transmission-connected to the first power device, and the rotation direction of the first grass collecting component is opposite to the rotation direction of the second conveying component.

[0015] Preferably, the second screening and conveying mechanism also includes a fifth conveying component, a third grass collecting component, and a fourth grass collecting component. The fifth conveying component and the third grass collecting component are respectively rotatably connected to the frame. The height of the axis of the third grass collecting component is lower than the height of the axis of the fifth conveying component. One end of the fourth grass collecting component is connected to the frame.

[0016] Preferably, the second screening and conveying device further includes a second power device, the third grass collecting component is transmission-connected to the second power device, and the rotation direction of the third grass collecting component is opposite to the rotation direction of the fifth conveying component.

[0017] The beneficial effect of adopting the above-mentioned preferred technical solution is that: through the second grass collecting component and the fourth grass collecting component, the passage of light debris such as roots and weeds that are easily entangled with each other can be blocked without blocking the transportation of root crops. As the third conveying component, the first grass collecting component and the sixth conveying component and the third grass collecting component rotate, the roots, weeds and other light debris can be torn and separated from the harvested crops and thrown into the field, which solves the problem that these debris are difficult to separate from the root crops due to their long length and easy to entangle with each other, and are difficult to fall off the third conveying component or the sixth conveying component, thereby improving the screening quality of root crops.

[0018] Preferably, the second screening and conveying mechanism also includes a ninth conveying component rotatably connected to the frame, the ninth conveying component is located below the sixth conveying component, the walking device at the bottom of the root crop harvester is located inside the boundary of the horizontal projection area of ​​the ninth conveying component, the ninth conveying component is a power conveyor belt or a slide, when the ninth conveying component is a power conveyor belt, the moving direction of the ninth conveying component is consistent with that of the sixth conveying component, when the ninth conveying component is a slide, the height of the ninth conveying component close to the collecting mechanism is lower than the height of the ninth conveying component away from the collecting mechanism.

[0019] The beneficial effect of adopting the above-mentioned preferred technical solution is that the ninth conveying component can prevent debris dropped from the sixth conveying component from falling into the traveling device of the root crop harvester and causing damage to the traveling device.

[0020] Preferably, the collecting mechanism includes a material box, a slow-descending conveying mechanism, and a first telescopic device. The slow-descending conveying mechanism is rotatably connected to the frame or the material box. One end of the first telescopic device is hinged to the slow-descending conveying mechanism and the other end is hinged to the frame or the material box.

[0021] Preferably, the slow-descent conveying mechanism is connected with a partition.

[0022] Preferably, the height of the slowly descending conveying mechanism away from one end of the sixth conveying component is not higher than the height of the rotational connection between the slowly descending conveying mechanism and the frame or the material box.

[0023] The beneficial effect of adopting the above-mentioned preferred technical solution is that the root crops that have completed screening and are transported by the second screening and conveying device can be automatically collected into the material box through the slow-down conveying device. Since the slow-down conveying mechanism is rotatably connected to the material box, and the two ends of the first telescopic device are respectively hinged to the material box and the slow-down conveying mechanism, the inclination angle of the slow-down conveying device can be adjusted according to the accumulation degree of the root crops in the material box through the first telescopic device, thereby reducing the free fall height of the root crops when they fall from the slow-down conveying device into the material box, thereby reducing the collision damage caused by the root crops when they fall from the slow-down conveying device into the material box, and the partition can further reduce the free fall height of the root crops.

[0024] Preferably, the collecting mechanism includes a material box and a second telescopic device. The material box is hinged to the frame, and both ends of the second telescopic device are hinged to the frame and the material box respectively.

[0025] The beneficial effect of adopting the above-mentioned preferred technical solution is that: through the second telescopic device, the material box can be turned over, and the root crops accumulated in the material box can be quickly and conveniently poured onto the transfer vehicle to realize the transfer of root crops, eliminating the process of manual collection, bagging and transportation, greatly improving the transfer efficiency of root crops, and effectively reducing the labor intensity of farmers.

[0026] Preferably, the collecting mechanism includes a descending conveying mechanism, the height of the front end of the sixth conveying component is not higher than the height of the rear end of the third conveying component, and the height of the rear end of the sixth conveying component is not lower than the height of the front end of the descending conveying mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the present utility model.

[0028] As shown in the figure:

[0029] 1. Frame, 201. First conveying component, 202. Second conveying component, 203. Third conveying component, 204. First vibrating component, 205. First grass collecting component, 206. Second grass collecting component;

[0030] 301. Fourth conveying component, 302. Fifth conveying component, 303. Sixth conveying component, 304. Second vibrating component, 305. Third grass collecting component, 306. Fourth grass collecting component, 307. Seventh conveying component, 308. Eighth conveying component, 309. Ninth conveying component; 401. Material box, 402. Slow-down conveying mechanism, 403. First telescopic device, 404. Second telescopic device. DETAILED DESCRIPTION

[0031] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0032] Example 1:

[0033] like Figure 1The screening and collecting device of a root crop harvester shown in the figure includes a frame 1, a first screening and conveying mechanism, a second screening and conveying mechanism, and a collecting mechanism. With the forward direction of the root crop harvester as the forward direction, in order from front to back, the digging device, the first screening and conveying mechanism, the second screening and conveying mechanism, and the collecting mechanism of the root crop harvester are connected to the frame 1 in sequence. The discharge end of the digging device of the root crop harvester is connected to the feed end of the first screening and conveying mechanism. The first screening and conveying mechanism includes a first conveying component 201, a second conveying component 202, a third conveying component 203, a first vibrating component 204, a first grass collecting component 205, and a second grass collecting component 206. The first conveying component 201 and the second conveying component 202 are respectively located at the first screening and conveying mechanism. At the front and rear ends of the conveying mechanism, the first conveying component 201 and the second conveying component 202 are arranged in parallel and are both rotatably connected to the frame 1. The height of the first conveying component 201 is lower than that of the second conveying component 202. The third conveying component 203 is sleeved on the first conveying component 201 and the second conveying component 202. The first conveying component 201 and the second conveying component 202 can drive the third conveying component 203 to convey the harvest from front to back. The third conveying component 203 is provided with a plurality of dropping channels with the same spacing for dropping sand, stones, weeds and other debris, and the size of the dropping channel on the third conveying component 203 is smaller than the set size of the root crop. In this embodiment, preferably, the third conveying component 203 is a chain conveyor belt. The first vibrating component 204 is rotatably connected to the frame 1. The first vibrating component 204 is parallel to the first conveying component 201 and the second conveying component 202. The vertical distance between the eccentric axis of the first vibrating component 204 and the harvested material bearing surface of the third conveying component 203 is less than the distance from the eccentric axis to the radially farthest end of the first vibrating component 204. The first vibrating component 204 can vibrate the bearing surface of the third conveying component 203 for conveying harvested materials. The first grass collecting component 205 is rotatably connected to the frame 1. The height of the axis of the first grass collecting component 205 is lower than the height of the axis of the second conveying component 202. A channel is provided between the first grass collecting component 205 and the bottom of the third conveying component 203 for only weeds and roots to pass through. In this embodiment, Preferably, the first grass collecting component 205 is a cylindrical roller, the second grass collecting component 206 is located at the rear side of the third conveying component 203, the upper end of the second grass collecting component 206 is connected to the frame 1 and is located above the third conveying component 203, the height of the lower end of the second grass collecting component 206 is not higher than the bottom height of the rear end of the third conveying component 203, the width of the second grass collecting component 206 is not less than the width of the third conveying component 203, the second grass collecting component 206 is made of soft material or rigid material, if the second grass collecting component 206 is made of rigid material, the second grass collecting component 206 is hinged to the frame 1, when the second grass collecting component 206 is subjected to external force, it can swing freely in the direction of the external force, the second grass collecting component 206 can be an integrated structure or a split structure,In this embodiment, preferably, the second grass collecting component 206 is a split structure and is composed of a plurality of first blocking parts, any one of which can swing freely. The frame 1 is connected to a first power device, which is connected to the first conveying component 201 or the second conveying component 202 through a first transmission device. The first power device is also connected to the first vibrating component 204 and the first grass collecting component 205 through the first transmission device. The rotation direction of the first grass collecting component 205 is opposite to the rotation direction of the second conveying component 202.

[0034] The second screening and conveying mechanism includes a fourth conveying component 301, a fifth conveying component 302, a sixth conveying component 303, a second vibrating component 304, a third grass collecting component 305, and a fourth grass collecting component 306. The fourth conveying component 301 and the fifth conveying component 302 are respectively located at the front and rear ends of the second screening and conveying mechanism. The fourth conveying component 301 and the fifth conveying component 302 are arranged in parallel and are both rotatably connected to the frame 1. The height of the fourth conveying component 301 is not higher than the height of the fifth conveying component 302. The sixth conveying component 303 is sleeved on the fourth conveying component 301 and the fifth conveying component 302. The height of the front end of the sixth conveying component 303 is not higher than the height of the rear end of the third conveying component. 02 can drive the sixth conveying component 303 to convey the harvested material from front to back. The front end of the sixth conveying component 303 is located at the rear side of the first grass collecting component 205, and is used to receive the root crops conveyed from the third conveying component 203. The sixth conveying component 303 is provided with a plurality of dropping channels with the same spacing for dropping sand, stones, weeds and other debris, and the size of the dropping channels on the sixth conveying component 303 is smaller than the size of the root crops. In this embodiment, preferably, the sixth conveying component 303 is a chain conveyor belt, the second vibrating component 304 is rotatably connected to the frame 1, the second vibrating component 304 is parallel to the fourth conveying component 301 and the fifth conveying component 302, and the eccentric shaft of the second vibrating component 304 is connected to the sixth conveying component 303. The vertical distance between the harvest carrying surfaces is less than the distance from the second vibrating component 304 from the eccentric shaft to the radially farthest end. The second vibrating component 304 can vibrate the carrying surface of the sixth conveying component for conveying the harvest. The third grass collecting component 305 is rotatably connected to the frame 1. The height of the axis of the third grass collecting component 305 is lower than the height of the axis of the fifth conveying component 302. A channel is provided between the third grass collecting component 305 and the bottom of the sixth conveying component 303 for only weeds and roots to pass through. In this embodiment, preferably, the third grass collecting component 305 is a cylindrical roller, and a seventh conveying component 307, an eighth conveying component 308, and a ninth conveying component 309 are further provided below the third grass collecting component 305. The components 308 are arranged parallel to each other and are respectively connected to the frame 1 for rotation. The ninth conveying component 309 is sleeved on the seventh conveying component 307 and the eighth conveying component 308. The seventh conveying component 307 and the eighth conveying component 308 can drive the ninth conveying component 309 to transport objects from front to back. The width of the ninth conveying component 309 is not less than the width of the sixth conveying component 303. The horizontal projection of the ninth conveying component 309 can completely cover the power mechanism and transmission mechanism of the walking device located at the bottom of the root crop harvester. The ninth conveying component 309 adopts a seamless conveyor belt for receiving weeds dropped from the first grass collecting component 205 and mud, weeds and other debris dropped from the sixth conveying component 303, and returning these debris to the field.This prevents these debris from falling into the power mechanism and transmission mechanism of the walking device of the root crop harvester below the ninth conveying component 309. The fourth grass collecting component 306 is located on the rear side of the sixth conveying component 303. The upper end of the fourth grass collecting component 306 is connected to the frame 1 and is located above the sixth conveying component 303. The height of the lower end of the fourth grass collecting component 306 is not higher than the bottom height of the rear end of the sixth conveying component 303. The width of the fourth grass collecting component 306 is not less than the width of the sixth conveying component 303. The fourth grass collecting component 306 is made of soft material. When the fourth grass collecting component 306 receives external force, it can swing freely in the direction of the external force. The fourth grass collecting component 306 can be an integrated structure or a split structure. In this embodiment, preferably, the fourth grass collecting component 306 is split The frame 1 is connected to a second power device, which is connected to the fourth conveying member 301 or the fifth conveying member 302 through a second transmission device, and is connected to the seventh conveying member 307 or the eighth conveying member 308 through a second transmission device. The second power device is also connected to the second vibrating member 304 and the third grass collecting member 305 through the second transmission device. The rotation direction of the fourth conveying member 301 and the fifth conveying member 302 is the same as the rotation direction of the seventh conveying member 307 and the eighth conveying member 308. The rotation direction of the third grass collecting member 305 is opposite to the rotation direction of the fifth conveying member 302.

[0035] The collecting mechanism includes a material box 401, a slow-down conveying mechanism 402, and a first telescopic device 403. The slow-down conveying mechanism 402 is located at the top of the material box 401. The height of the front end of the slow-down conveying mechanism 402 is not higher than the height of the rear end of the sixth conveying component 303. A space for throwing mud, stones and other debris is provided between the material box 401 and the ninth conveying component 309. The slow-down conveying mechanism 402 includes a first bracket, a tenth conveying component, an eleventh conveying component, and a twelfth conveying component. The tenth conveying component and the eleventh conveying component are respectively located at the front and rear ends of the first bracket, and the tenth conveying component and the tenth conveying component are respectively located at the front and rear ends of the first bracket. The first transmission component is arranged in parallel and is rotatably connected to the first bracket. The twelfth transmission component is mounted on the tenth transmission component and the eleventh transmission component. The tenth transmission component and the eleventh transmission component can drive the twelfth transmission component to transport the harvested material from the front to the back. The front end of the twelfth transmission component is located at the rear side of the third grass collecting component 305, and is used to receive the root crops transported from the sixth transmission component 303. The surface of the twelfth transmission component is connected to a plurality of partitions, which are arranged horizontally on the twelfth transmission component, and the spacing between two adjacent partitions is the same. The first bracket is connected to the third power device. The third power device is connected to the eleventh conveying component through the third transmission device, the tenth conveying component is rotatably connected to the material box 401 or the frame 1, and the first telescopic device 403 is symmetrically arranged on the left and right sides of the material box 401. One end of the first telescopic device 403 is hinged to the rear end of the slow-down conveying mechanism 402 and the other end is hinged to the frame 1 or the material box 401. In this embodiment, preferably, the tenth conveying component is rotatably connected to the front end of the material box 401, and the first telescopic device 403 is hinged to the material box 401. Through the first telescopic device 403, the first telescopic device 403 can be driven along the first The rotating shaft rotates downward from a horizontal state. When the slow-down conveying mechanism 402 is in a horizontal state, a space for root crops to pass through is left between the slow-down conveying mechanism 402 and the inner wall of the material box 401. The rear end of the material box 401 is hinged to the rear end of the frame 1. Second telescopic devices 404 are symmetrically arranged on the left and right sides of the frame 1. The two ends of the second telescopic device 404 are hinged to the frame 1 and the material box 401 respectively. The hinge axis of the second telescopic device 404 and the material box 401 is located in front of the hinge axis of the frame 1 and the material box 401. The second telescopic device 404 can drive the material box 401 to flip backward.

[0036] The working principle of this utility model is:

[0037] First, as the root crop harvester moves forward, the excavating device of the root crop harvester can continuously obtain the harvest including root crops and debris such as mud, stones, and weeds, and as the root crop harvester moves forward, the harvest is continuously moved by the excavating device to the third conveying component 203 of the first screening and conveying mechanism, and the first vibrating component 204 can vibrate the harvest carrying surface of the third conveying component 203, and the vibration of the third conveying component 203 can cause the mud wrapped around the root crops on the third conveying component 203 to break, and at the same time, the broken mud and debris such as stones, soil, and weeds fall from the dropping channel of the third conveying component 203 into the field. When the harvested crops are transported from front to back by the third conveying component 203 to the rear end of the first screening and conveying mechanism, root crops, remaining mud, stones and other debris, due to their heavy weight, can be transported by the third conveying component 203 and use their own weight and inertia to overcome the elastic force or weight of the second grass collecting component 206 and fall onto the sixth conveying component 303 of the second screening and conveying mechanism. However, lighter debris such as weeds and roots are blocked by the second grass collecting component 206 due to their light weight. As the third conveying component 203 continues to rotate, the weeds and roots enter the gap between the first grass collecting component 205 and the third conveying component 203 and fall into the field, thus completing the preliminary screening of the harvested crops.

[0038] Afterwards, when the harvested material that has completed the preliminary screening falls onto the sixth conveyor component 303, the second vibrating component 304 further breaks up the mud blocks on the sixth conveyor component 303, and causes the broken mud blocks and the remaining debris such as stones, weeds, and soil to fall from the dropping channel of the sixth conveyor component 303 onto the ninth conveyor component 309 or directly fall into the field. The debris that falls onto the ninth conveyor component 309 is thrown into the field as it is transported by the ninth conveyor component 309. At this time, the heavier debris such as stones and soil in the harvested material has been basically screened out. When the remaining harvested material is transported from front to back by the sixth conveying component 303 to the rear end of the second screening and conveying mechanism, the root crops use their inertia and weight to overcome the elastic force or dead weight of the fourth grass collecting component 306 and fall onto the slow-fall conveying mechanism, while the remaining weeds, roots and other lighter debris are blocked by the fourth grass collecting component 306. As the sixth conveying component 303 continues to rotate, the weeds and roots enter the gap between the third grass collecting component 305 and the sixth conveying component 303 and fall into the field, thus completing the screening of all debris in the harvested material.

[0039] Then, when the material box 401 is in an empty state, the first telescopic device 403 is used to rotate the slow-fall conveying mechanism downward from the horizontal state by a certain angle. Due to the obstruction of the partition, the root and tuber crops that fall onto the slow-fall conveying mechanism 402 will fall into the material box 401 only when they move from the front end to the rear end of the slow-fall conveying mechanism along with the twelfth conveying component. This reduces the height of the root and tuber crops' free fall and the possibility of the root and tuber crops being damaged by collision. As the root and tuber crops continue to accumulate in the material box 401, the slow-fall conveying mechanism tilts and gradually rotates upward until it returns to a horizontal state.

[0040] Finally, when the root crop harvester completes the harvesting operation or the material box 401 is full of root crops, the second telescopic device 404 can drive the material box 401 to flip backward, and the root crops in the material box 401 can be tilted into the transfer vehicle. After unloading is completed, the material box is reset, and the unloading operation of the material box 401 is completed.

[0041] Example 2:

[0042] The similarities between this embodiment and embodiment 1 are not repeated here. A ninth conveying component 309 is provided below the third grass collecting component 305. The ninth conveying component 309 is connected to the frame 1. The ninth conveying component 309 is close to, in this embodiment, preferably, the ninth conveying component 309 is a slide, and the height of one side of the collection mechanism is lower than the height of the ninth conveying component 309 away from the collection mechanism.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, persons of ordinary skill in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some of the technical features therein with equivalents; and such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A screening and collecting device for a root crop harvester, characterized in that: The invention comprises a frame (1), a first screening and conveying mechanism, a second screening and conveying mechanism, and a collecting mechanism, wherein the first screening and conveying mechanism, the second screening and conveying mechanism, and the collecting mechanism are sequentially connected to the frame (1) in a forward-to-backward order, the first screening and conveying mechanism comprises a third conveying component (203) rotatably connected to the frame (1), and the second screening and conveying mechanism comprises a sixth conveying component (303) rotatably connected to the frame (1).

2. The screening and collecting device for a root crop harvester according to claim 1, characterized in that: The third conveying component (203) is arranged obliquely, and the sixth conveying component (303) is arranged horizontally or obliquely.

3. The screening and collecting device for a root crop harvester according to claim 1, characterized in that: The first screening and conveying mechanism further comprises a first vibrating component (204) rotatably connected to the frame (1), and the second screening and conveying mechanism further comprises a second vibrating component (304) rotatably connected to the frame (1).

4. The screening and collecting device for a root crop harvester according to claim 1, characterized in that: The first screening and conveying mechanism further comprises a second conveying component (202), a first grass collecting component (205), and a second grass collecting component (206); the second conveying component (202) and the first grass collecting component (205) are respectively rotatably connected to the frame (1); the height of the axis of the first grass collecting component (205) is lower than the height of the axis of the second conveying component (202); and one end of the second grass collecting component (206) is connected to the frame (1).

5. The screening and collecting device for a root crop harvester according to claim 1, characterized in that: The second screening and conveying mechanism further includes a fifth conveying component (302), a third grass collecting component (305), and a fourth grass collecting component (306). The fifth conveying component (302) and the third grass collecting component (305) are respectively rotatably connected to the frame (1). The height of the axis of the third grass collecting component (305) is lower than the height of the axis of the fifth conveying component (302). One end of the fourth grass collecting component (306) is connected to the frame (1).

6. The screening and collecting device for a root crop harvester according to claim 1, characterized in that: The second screening and conveying mechanism further comprises a ninth conveying component (309) connected to the frame (1), the ninth conveying component (309) being located below the sixth conveying component (303), the walking device at the bottom of the root crop harvester being located inside the boundary of the horizontal projection area of ​​the ninth conveying component (309), the ninth conveying component (309) being a power conveying belt or a slide, when the ninth conveying component (309) is a power conveying belt, the moving direction of the ninth conveying component (309) is consistent with that of the sixth conveying component (303), when the ninth conveying component (309) is a slide, the height of the ninth conveying component (309) close to the collecting mechanism is lower than the height of the ninth conveying component (309) away from the collecting mechanism.

7. The screening and collecting device for a root crop harvester according to claim 1, characterized in that: The collecting mechanism comprises a material box (401), a slow-down conveying mechanism (402), and a first telescopic device (403); the slow-down conveying mechanism (402) is rotatably connected to a frame (1) or a material box (401); one end of the first telescopic device (403) is hinged to the slow-down conveying mechanism (402) and the other end is hinged to the frame (1) or the material box (401).

8. The screening and collecting device for a root crop harvester according to claim 7, characterized in that: The height of the slow-down conveying mechanism (402) away from one end of the sixth conveying component (303) is not higher than the height of the rotation connection between the slow-down conveying mechanism (402) and the frame (1) or the material box (401).

9. The screening and collecting device for a root crop harvester according to claim 1, characterized in that: The collecting mechanism comprises a material box (401) and a second telescopic device (404); the material box (401) is hinged to the frame (1); and two ends of the second telescopic device (404) are hinged to the frame (1) and the material box (401) respectively.

10. The screening and collecting device for a root crop harvester according to claim 1, characterized in that: The collecting mechanism includes a slow-down conveying mechanism (402), the height of the front end of the sixth conveying component (303) is not higher than the height of the rear end of the third conveying component (203), and the height of the rear end of the sixth conveying component (303) is not lower than the height of the front end of the slow-down conveying mechanism (402).

11. The screening and collecting device for a root crop harvester according to claim 4, characterized in that: The first screening and conveying mechanism further comprises a first power device, the first grass collecting component (205) is in transmission connection with the first power device, and the rotation direction of the first grass collecting component (205) is opposite to the rotation direction of the second conveying component (202).

12. The screening and collecting device for a root crop harvester according to claim 5, characterized in that: The second screening and conveying mechanism further comprises a second power device, the third grass collecting component (305) is in transmission connection with the second power device, and the rotation direction of the third grass collecting component (305) is opposite to the rotation direction of the fifth conveying component (302).

13. The screening and collecting device for a root crop harvester according to claim 7, characterized in that: The slow-down conveying mechanism (402) is connected to a partition.

Images