Harvesting machine capable of screening rosa roxburghii tratt fruits

Abstract

The invention relates to the technical field of harvesters, and discloses a harvester capable of screening rosa roxburghii trats.The harvester comprises a transport vehicle, a front supporting bracket is fixedly connected to the top of the transport vehicle, a triangular frame is fixedly connected to the left side of the transport vehicle, and a supporting frame is fixedly connected to the top of the triangular frame; when the rosa roxburghii tratt harvesting device begins to harvest rosa roxburghii tratt, the rubber plate moves to impact and vibrate trunks of rosa roxburghii tratt trees, so that the rosa roxburghii tratt can fall off branches in batches, the rosa roxburghii tratt can be quickly harvested, the manual picking time is shortened, the labor intensity is reduced, and the harvesting efficiency is improved. The harvesting efficiency is greatly improved, meanwhile, the multiple first protruding blocks enable the sieve plate to rotate many times, and therefore impurities such as branch soil in roxburgh roses can be shaken off to be screened, the labor amount of manual roxburgh rose harvesting can be reduced, and the labor burden of workers can be relieved.

Description

Technical Field

[0001] The present invention relates to the technical field of harvesting machines, and particularly to a harvesting machine capable of screening Rosa roxburghii Tratt fruits. Background Art

[0002] Rosa roxburghii Tratt usually grows in complex terrains such as mountains. Its branches are overgrown and intertwined, with thorns on the branches that are prickly, and the fruits also have thorns. Manual picking is difficult and slow, and it is difficult to meet the harvesting requirements of large-scale planting.

[0003] The patent with the publication number CN219660418U relates to a small automatic Rosa roxburghii Tratt fruit picking device in the technical field of fruit picking, including: a trolley. A fruit collection box, a base, a conveying plate, a first motor and a round rod are fixedly installed on the top of the outer surface of the trolley. A plurality of tires are rotatably embedded at the bottom of the outer surface of the trolley. A collection cloth is fixedly installed on one side of the conveying plate close to the first motor, and a blanking head is fixedly installed on one side of the conveying plate close to the base. Aiming at the deficiencies of the existing technology of mechanized Rosa roxburghii Tratt picking, the design of a small Rosa roxburghii Tratt harvesting device is proposed. Through the cooperation of the first motor, the collection cloth, the base and the blanking head, the device can achieve the picking of Rosa roxburghii Tratt fruits, and at the same time can adjust the picking height of Rosa roxburghii Tratt fruits. The fruits transmitted to the inside of the defoliating motor can remove the thorns on the surface of Rosa roxburghii Tratt fruits through the main roller shaft and the auxiliary roller shaft, and can achieve the harvesting, defoliating and fruit collection of Rosa roxburghii Tratt fruits. However, when the device harvests Rosa roxburghii Tratt fruits, it is easy to collect impurities such as branches and soil mixed in Rosa roxburghii Tratt fruits together, and it is very difficult to separate the impurities in Rosa roxburghii Tratt fruits. Therefore, workers need to screen them again. Thus, a harvesting machine capable of screening Rosa roxburghii Tratt fruits is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a harvesting machine capable of screening Rosa roxburghii Tratt fruits for the deficiencies in the above-mentioned prior art.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is as follows: A harvesting machine capable of screening Rosa roxburghii Tratt, including a transport vehicle, a front support bracket is fixedly connected to the top of the transport vehicle, a triangular bracket is fixedly connected to the left side of the transport vehicle, a support frame is fixedly connected to the top of the triangular bracket, a motor is fixedly connected to the top of the support frame, a reciprocating lead screw is fixedly connected to the output end of the motor, a U-shaped plate is movably connected to the circumferential surface of the reciprocating lead screw, a rubber plate is fixedly connected to the left side of the U-shaped plate, a limiting plate one is fixedly connected to the top of the support frame, an L-shaped plate one is fixedly connected to the front part of the U-shaped plate, a sieve plate is rotatably connected to the inner wall of the transport vehicle, an L-shaped plate two is fixedly connected to the top of the sieve plate, an extension mechanism for improving the collection efficiency of Rosa roxburghii Tratt is arranged on the left side of the reciprocating lead screw, a quick-release mechanism for facilitating quick replacement is arranged on the top of the sieve plate, an arc plate is fixedly connected to the rear part of the L-shaped plate one, a convex block one is fixedly connected to the bottom of the L-shaped plate two, the top of the limiting plate one is slidably connected to the bottom of the U-shaped plate, the top of the arc plate is in contact with the bottom of the convex block one, and the front part of the L-shaped plate two is in contact with the rear part of the L-shaped plate one. When harvesting Rosa roxburghii Tratt, the movement of the rubber plate will impact the trunk of the Rosa roxburghii Tratt tree and generate vibration, so that Rosa roxburghii Tratt can fall off the branches in batches, enabling rapid harvesting of Rosa roxburghii Tratt, reducing the time and labor intensity of manual picking, greatly improving the harvesting efficiency. At the same time, multiple convex blocks one enable the sieve plate to rotate multiple times, so that impurities such as branches and soil in Rosa roxburghii Tratt can be shaken off and screened, reducing the labor amount of manual harvesting of Rosa roxburghii Tratt and lightening the labor burden of workers.

[0006] Preferably, the extension mechanism includes a hollow frame, the hollow frame is fixedly connected to the rear of the triangular bracket, a fixed groove is fixedly connected to the front of the L-shaped plate one, a sliding rod is slidably connected to the inner wall of the fixed groove through a spring, a pushing plate is fixedly connected to the circumferential surface of the sliding rod, a chamfered block is fixedly connected to the bottom of the inner wall of the hollow frame, a rotating rod is rotatably connected to the inner wall of the chamfered block through a torsion spring, a fixed frame is fixedly connected to the circumferential surface of the rotating rod, a straight plate is fixedly connected to the circumferential surface of the rotating rod, a limiting plate two is fixedly connected to the left side of the L-shaped plate one, a mesh bag is installed in the inner wall of the fixed frame, the top of the straight plate is in contact with the bottom of the limiting plate two, and the inner wall of the sieve plate is in contact with the bottom of the pushing plate. During screening, the Rosa roxburghii Tratt in the sieve plate can be dispersed to improve the screening effect of impurities in Rosa roxburghii Tratt, avoid excessive accumulation of Rosa roxburghii Tratt, prevent Rosa roxburghii Tratt from blocking the screening openings of the sieve plate and affecting normal screening. At the same time, it can increase the collection area of Rosa roxburghii Tratt, improve the harvesting efficiency of Rosa roxburghii Tratt, and can better capture the falling Rosa roxburghii Tratt through the large-area mesh bag, avoiding damage to Rosa roxburghii Tratt after it falls to the ground.

[0007] Preferably, the quick-release mechanism includes a connecting plate fixedly connected to the top of the pushing plate. A second convex block is fixedly connected to the inner wall of the sieve plate. An inner groove block is fixedly connected to the front of the fixed frame. A fixed block is fixedly connected to the front of the mesh bag. A pull rod is slidably connected to the inner wall of the fixed block. An inclined block is fixedly connected to the left side of the pull rod. A moving rod is slidably connected to the inner wall of the inner groove block through a spring. A clamping block is fixedly connected to the bottom of the moving rod. The bottom of the connecting plate is in contact with the inner wall of the sieve plate. The inner wall of the inner groove block is in contact with the left side of the inclined block. The surface of the inclined block is in contact with the surface of the clamping block. During harvesting, it can generate vibration on the surface of the sieve plate, thereby improving the screening speed of impurities such as branches and soil in the prickly pears, further improving the working efficiency of prickly pear harvesting. At the same time, it can quickly remove the mesh bag, enabling quick replacement of damaged ones, avoiding the problem of cumbersome replacement during use and affecting the harvesting progress.

[0008] Adopting the above technical solutions, the present invention can bring the following beneficial effects:

[0009] 1. For the harvesting machine capable of screening prickly pears, through the coordinated operation of the transport vehicle, front support bracket, triangular bracket, support frame, motor, reciprocating lead screw, U-shaped plate, rubber plate, first limiting plate, first L-shaped plate, sieve plate, second L-shaped plate, arc plate, and first convex block, when harvesting prickly pears, the movement of the rubber plate will impact the trunk of the prickly pear tree and generate vibration, enabling the prickly pears to fall off the branches in batches, thus quickly harvesting the prickly pears, reducing the time and labor intensity of manual picking, greatly improving the harvesting efficiency. At the same time, multiple first convex blocks enable the sieve plate to rotate multiple times, thereby screening out impurities such as branches and soil in the prickly pears, reducing the labor amount of manual prickly pear harvesting and alleviating the labor burden of workers.

[0010] 2. For the harvesting machine capable of screening prickly pears, through the coordinated operation of the hollow frame, fixed groove, sliding rod, pushing plate, chamfered block, rotating rod, fixed frame, straight plate, second limiting plate, and mesh bag, during screening, it can disperse the prickly pears in the sieve plate to improve the screening effect of impurities in the prickly pears, prevent excessive accumulation of prickly pears, and avoid blockage of the screening openings of the sieve plate by prickly pears, affecting normal screening. At the same time, it can increase the collection area of prickly pears, improve the harvesting efficiency of prickly pears, and can better capture the falling prickly pears through the large-area mesh bag, avoiding damage to the prickly pears after they fall to the ground.

[0011] 3. The harvester capable of screening the roxburghii pear can generate vibration on the surface of the screen plate during harvesting through the coordinated operation of the connecting plate, the second protruding block, the inner groove block, the fixed block, the pulling rod, the inclined block, the moving rod, and the clamping block, thereby increasing the screening speed of impurities such as branches and soil in the roxburghii pear, further improving the work efficiency of the roxburghii pear harvesting, and at the same time quickly completing the removal of the net bag, so that the damaged one can be quickly replaced, avoiding the problem of cumbersome replacement during use and affecting the harvesting progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0013] Figure 2 A half-section diagram of the tripod structure of the present invention;

[0014] Figure 3 For the present invention Figure 2 A magnified view of the structure at center;

[0015] Figure 4 For the present invention Figure 2 A magnified view of the structure at B in the middle;

[0016] Figure 5 A half-section diagram of the extension mechanism of the present invention;

[0017] Figure 6 For the present invention Figure 5 A magnified view of the structure at C in the middle;

[0018] Figure 7 It is a schematic diagram of the quick release mechanism of the present invention;

[0019] Figure 8 For the present invention Figure 7 Enlarged view of the structure at point D in the middle.

[0020] In the figure: 1. transport vehicle; 2. front support bracket; 3. tripod; 4. support frame; 5. motor; 6. reciprocating screw; 7. U-shaped plate; 8. rubber plate; 9. limit plate one; 10. L-shaped plate one; 11. screen plate; 12. L-shaped plate two; 13. arc plate; 14. convex block one; 15. extension mechanism; 151. hollow frame; 152. fixed groove; 153. sliding rod; 154. pushing plate; 155. chamfering block; 156. rotating rod; 157. fixed frame; 158. straight plate; 159. limit plate two; 1510. net bag; 16. quick release mechanism; 161. connecting plate; 162. convex block two; 163. inner groove block; 164. fixed block; 165. pulling rod; 166. oblique block; 167. moving rod; 168. clamping block. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-8, an embodiment of the present invention is: a harvesting machine capable of screening Rosa roxburghii tratt, including a transport vehicle 1, a front support bracket 2 is fixedly connected to the top of the transport vehicle 1, a triangular bracket 3 is fixedly connected to the left side of the transport vehicle 1, a support frame 4 is fixedly connected to the top of the triangular bracket 3, a motor 5 is fixedly connected to the top of the support frame 4, an output end of the motor 5 is fixedly connected to a reciprocating lead screw 6, a U-shaped plate 7 is movably connected to the circumferential surface of the reciprocating lead screw 6, a rubber plate 8 is fixedly connected to the left side of the U-shaped plate 7, a first limiting plate 9 is fixedly connected to the top of the support frame 4. When harvesting Rosa roxburghii tratt, the transport vehicle 1 moves to the Rosa roxburghii tratt tree to be harvested. At this time, the motor 5 is started to drive the reciprocating lead screw 6 to rotate. The reciprocating lead screw 6 rotates and the slider arranged inside the U-shaped plate 7 contacts the chute on the surface of the reciprocating lead screw 6, so that the U-shaped plate 7 can move to the left. The U-shaped plate 7 moves to drive the rubber plate 8 to move to the left. During the movement of the U-shaped plate 7, it will be limited by the first limiting plate 9, so that the U-shaped plate 7 cannot rotate and can move. The movement of the rubber plate 8 will impact the trunk of the Rosa roxburghii tratt tree and generate vibration, so that Rosa roxburghii tratt can fall off the branches in batches, enabling rapid harvesting of Rosa roxburghii tratt, reducing the time and labor intensity of manual picking, and greatly improving the harvesting efficiency. An L-shaped plate 10 is fixedly connected to the front of the U-shaped plate 7, a sieve plate 11 is rotatably connected to the inner wall of the transport vehicle 1, an L-shaped plate 12 is fixedly connected to the top of the sieve plate 11, and an extension mechanism 15 for improving the collection efficiency of Rosa roxburghii tratt is arranged on the left side of the reciprocating lead screw 6. A quick-release mechanism 16 for facilitating quick replacement is arranged on the top of the sieve plate 11. An arc-shaped plate 13 is fixedly connected to the rear of the L-shaped plate 10, a first convex block 14 is fixedly connected to the bottom of the L-shaped plate 12, the top of the first limiting plate 9 is slidably connected to the bottom of the U-shaped plate 7, the top of the arc-shaped plate 13 contacts the bottom of the first convex block 14, and the front of the L-shaped plate 12 contacts the rear of the L-shaped plate 10. At the same time, when harvesting, the left semi-circular notch of the sieve plate 11 will fit with the trunk to ensure that a large number of Rosa roxburghii tratt fall on the surface of the sieve plate 11. At this time, the U-shaped plate 7 moves to drive the L-shaped plate 10 to move, and the L-shaped plate 10 moves to drive the arc-shaped plate 13 to move. During the movement of the arc-shaped plate 13, it will exert a squeezing force on the first convex block 14, forcing the first convex block 14 to move upward. The first convex block 14 moves upward to drive the L-shaped plate 12 to move upward, and the L-shaped plate 12 moves upward to drive the sieve plate 11 to move and rotate clockwise. The sieve plate 11 can rotate multiple times through multiple first convex blocks 14, so that impurities such as branches and soil in Rosa roxburghii tratt can be shaken off and screened, reducing the labor amount of manual harvesting of Rosa roxburghii tratt and reducing the labor burden of workers.

[0023] The extension mechanism 15 includes a hollow frame 151. The hollow frame 151 is fixedly connected to the rear of the triangular frame 3. A fixed groove 152 is fixedly connected to the front of the first L-shaped plate 10. A sliding rod 153 is slidably connected to the inner wall of the fixed groove 152 through a spring. A pushing plate 154 is fixedly connected to the circumferential surface of the sliding rod 153. During screening, the movement of the first L-shaped plate 10 drives the fixed groove 152 to move. The movement of the fixed groove 152 drives the sliding rod 153 to move. The movement of the sliding rod 153 drives the pushing plate 154 to move. When the sieve plate 11 rotates, it will generate a squeezing force on the pushing plate 154, forcing the pushing plate 154 to move upward. The movement of the pushing plate 154 drives the sliding rod 153 to move upward. Thus, the pushing plate 154 can adapt to the change in the rotation angle of the sieve plate 11 by itself, without affecting the rotation of the sieve plate 11. Thereby, the prickly pears in the sieve plate 11 can be dispersed to improve the screening effect of impurities in the prickly pears, avoid excessive accumulation of prickly pears, and prevent the prickly pears from clogging the screening openings of the sieve plate 11 and affecting the normal screening process. A chamfer block 155 is fixedly connected to the bottom of the inner wall of the hollow frame 151. A rotating rod 156 is rotatably connected to the inner wall of the chamfer block 155 through a torsion spring. A fixed frame 157 is fixedly connected to the circumferential surface of the rotating rod 156. A straight plate 158 is fixedly connected to the circumferential surface of the rotating rod 156. A second limiting plate 159 is fixedly connected to the left side of the first L-shaped plate 10. A mesh bag 1510 is installed inside the fixed frame 157. The top of the straight plate 158 is in contact with the bottom of the second limiting plate 159. The inner wall of the sieve plate 11 is in contact with the bottom of the pushing plate 154. At the same time, the movement of the first L-shaped plate 10 drives the second limiting plate 159 to move. The movement of the second limiting plate 159 will cause the straight plate 158 to be in the notch position of the second limiting plate 159, and thus the straight plate 158 will no longer be limited. After the limitation is released, the straight plate 158 rotates through the torsion spring. The rotation of the straight plate 158 drives the fixed frame 157 to rotate. The rotation of the fixed frame 157 drives the mesh bag 1510 to rotate. Thereby, the collection area for prickly pears can be increased, the harvesting efficiency of prickly pears can be improved, and the dropped prickly pears can be better captured through the large-area mesh bag 1510, avoiding damage to the prickly pears after they fall to the ground.

[0024] Working principle: When harvesting Rosa roxburghii, the transport vehicle 1 moves in front of the Rosa roxburghii tree to be harvested. At this time, the motor 5 starts to drive the reciprocating lead screw 6 to rotate. The rotation of the reciprocating lead screw 6 makes the slider inside the U-shaped plate 7 come into contact with the chute on the surface of the reciprocating lead screw 6, so that the U-shaped plate 7 can move to the left. The movement of the U-shaped plate 7 drives the rubber plate 8 to move to the left. During the movement of the U-shaped plate 7, it will be limited by the first limiting plate 9, so that the U-shaped plate 7 can move without rotating. The movement of the rubber plate 8 will impact the trunk of the Rosa roxburghii tree and generate vibration, so that Rosa roxburghii can fall off the branches in batches, enabling rapid harvesting of Rosa roxburghii, reducing the time and labor intensity of manual picking, greatly improving the harvesting efficiency. At the same time, when harvesting, the left semi-circular notch of the sieve plate 11 will fit the trunk, ensuring that a large number of Rosa roxburghii fall on the surface of the sieve plate 11. At this time, the movement of the U-shaped plate 7 drives the first L-shaped plate 10 to move, and the movement of the first L-shaped plate 10 drives the arc plate 13 to move. During the movement of the arc plate 13, it will exert a squeezing force on the first convex block 14, forcing the first convex block 14 to move upward. The upward movement of the first convex block 14 drives the second L-shaped plate 12 to move upward, and the upward movement of the second L-shaped plate 12 drives the sieve plate 11 to move and rotate clockwise. Through multiple first convex blocks 14, the sieve plate 11 can rotate multiple times, so that impurities such as branches and soil in Rosa roxburghii can be shaken off and screened, reducing the labor amount of manual harvesting of Rosa roxburghii and lightening the labor burden of workers.

[0025] During screening, the movement of the first L-shaped plate 10 drives the fixed groove 152 to move, the movement of the fixed groove 152 drives the sliding rod 153 to move, and the movement of the sliding rod 153 drives the push plate 154 to move. When the sieve plate 11 rotates, it will exert a squeezing force on the push plate 154, forcing the push plate 154 to move upward. The movement of the push plate 154 drives the sliding rod 153 to move upward, so that the push plate 154 can adapt to the change in the rotation angle of the sieve plate 11 by itself without affecting the rotation of the sieve plate 11, thereby dispersing the Rosa roxburghii in the sieve plate 11 to improve the screening effect of impurities in Rosa roxburghii, avoiding excessive accumulation of Rosa roxburghii, and preventing Rosa roxburghii from blocking the screening port of the sieve plate 11 and affecting normal screening. At the same time, the movement of the first L-shaped plate 10 drives the second limiting plate 159 to move, and the movement of the second limiting plate 159 makes the straight plate 158 located at the notch position of the second limiting plate 159, so that the straight plate 158 is no longer limited. After the limit is released, the straight plate 158 rotates through the torsion spring, the rotation of the straight plate 158 drives the fixed frame 157 to rotate, and the rotation of the fixed frame 157 drives the mesh bag 1510 to rotate, thereby increasing the collection area of Rosa roxburghii, improving the harvesting efficiency of Rosa roxburghii, and being able to better capture the falling Rosa roxburghii through the large-area mesh bag 1510 to avoid damage to Rosa roxburghii after it falls to the ground.

[0026] Please refer to Figures 1-8, on the basis of the above embodiments, in another embodiment of the present invention, the quick-release mechanism 16 includes a connecting plate 161. The connecting plate 161 is fixedly connected to the top of the pushing plate 154. A second convex block 162 is fixedly connected to the inner wall of the sieve plate 11. During the harvesting process, the movement of the pushing plate 154 drives the movement of the connecting plate 161. During the movement of the connecting plate 161, it will come into contact with the second convex block 162 and exert a squeezing force on the connecting plate 161, causing the connecting plate 161 to move upward. The upward movement of the connecting plate 161 drives the upward movement of the pushing plate 154. When the connecting plate 161 passes over the second convex block 162, the pushing plate 154 moves downward through the spring to reset, so as to vibrate the surface of the sieve plate 11, thereby improving the sieving speed of impurities such as branches and soil in the prickly pears, and further improving the working efficiency of prickly pear harvesting. The front part of the fixed frame 157 is fixedly connected with an inner groove block 163. The front part of the mesh bag 1510 is fixedly connected with a fixing block 164. A pulling rod 165 is slidably connected to the inner wall of the fixing block 164. A slanting block 166 is fixedly connected to the left side of the pulling rod 165. A moving rod 167 is slidably connected to the inner wall of the inner groove block 163 through a spring. A clamping block 168 is fixedly connected to the bottom of the moving rod 167. The bottom of the connecting plate 161 is in contact with the inner wall of the sieve plate 11. The inner wall of the inner groove block 163 is in contact with the left side of the slanting block 166. The surface of the slanting block 166 is in contact with the surface of the clamping block 168. At the same time, when the mesh bag 1510 is damaged during the long-term harvesting of prickly pears, pull the pulling rod 165 to move to the right. The movement of the pulling rod 165 drives the movement of the slanting block 166. The movement of the slanting block 166 will come into contact with the clamping block 168 and exert a squeezing force on the clamping block 168, causing the clamping block 168 to move upward. The upward movement of the clamping block 168 drives the upward movement of the moving rod 167. At this time, the slanting block 166 can be pulled out, so as to complete the removal of the mesh bag 1510, enabling quick replacement of the damaged one and avoiding the problem of cumbersome replacement and affecting the harvesting progress during use.

[0027] Working principle: During the harvesting process, pushing the pushing plate 154 to move drives the connecting plate 161 to move. During the movement of the connecting plate 161, it will come into contact with the second convex block 162 and exert a squeezing force on the connecting plate 161, causing the connecting plate 161 to move upward. The upward movement of the connecting plate 161 drives the pushing plate 154 to move upward. When the connecting plate 161 passes over the second convex block 162, the pushing plate 154 moves downward through the spring to reset, so as to vibrate the surface of the sieve plate 11, thereby improving the screening speed of impurities such as branches and soil in the prickly pears, and further improving the working efficiency of prickly pear harvesting. At the same time, when the mesh bag 1510 is damaged during long-term prickly pear harvesting, pulling the pulling rod 165 to move to the right drives the inclined block 166 to move. The movement of the inclined block 166 will come into contact with the clamping block 168 and exert a squeezing force on the clamping block 168, causing the clamping block 168 to move upward. The upward movement of the clamping block 168 drives the moving rod 167 to move upward. At this time, the inclined block 166 can be pulled out, thus completing the removal of the mesh bag 1510, enabling quick replacement of the damaged one and avoiding the problem of cumbersome replacement and affecting the harvesting progress during use.

[0028] The present invention provides a harvesting machine capable of screening prickly pears. There are many methods and ways to specifically implement this technical solution. The above description is only the preferred embodiment of the present invention. It should be noted 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. Each component not clearly defined in this embodiment can be implemented by existing technologies.

Claims

1. A harvesting machine capable of screening Rosa roxburghii Tratt, comprising a transport vehicle (1), characterized in that: A front support bracket (2) is fixedly connected to the top of the transport vehicle (1). A tripod (3) is fixedly connected to the left side of the transport vehicle (1). A support frame (4) is fixedly connected to the top of the tripod (3). A motor (5) is fixedly connected to the top of the support frame (4). An output end of the motor (5) is fixedly connected to a reciprocating lead screw (6). A U-shaped plate (7) is movably connected to the circumferential surface of the reciprocating lead screw (6). A rubber plate (8) is fixedly connected to the left side of the U-shaped plate (7). A first limiting plate (9) is fixedly connected to the top of the support frame (4). An L-shaped plate one (10) is fixedly connected to the front part of the U-shaped plate (7). A sieve plate (11) is rotatably connected to the inner wall of the transport vehicle (1). An L-shaped plate two (12) is fixedly connected to the top of the sieve plate (11). An extension mechanism (15) for improving the efficiency of rosa roxburghii collection is arranged on the left side of the reciprocating lead screw (6). A quick-release mechanism (16) for facilitating quick replacement is arranged on the top of the sieve plate (11). An arc-shaped plate (13) is fixedly connected to the rear part of the L-shaped plate one (10). A first convex block (14) is fixedly connected to the bottom of the L-shaped plate two (12).

2. The harvesting machine capable of screening Rosa roxburghii Tratt according to claim 1, wherein: The top of the first limiting plate (9) is slidably connected to the bottom of the U-shaped plate (7). The top of the arc-shaped plate (13) is in contact with the bottom of the first convex block (14). The front part of the L-shaped plate two (12) is in contact with the rear part of the L-shaped plate one (10).

3. The harvesting machine capable of screening Rosa roxburghii Tratt according to claim 2, characterized in that: The extension mechanism (15) includes a hollow frame (151). The hollow frame (151) is fixedly connected to the rear part of the tripod (3). A fixing groove (152) is fixedly connected to the front part of the L-shaped plate one (10). A sliding rod (153) is slidably connected to the inner wall of the fixing groove (152) through a spring.

4. A harvesting machine capable of screening Rosa roxburghii tratt according to claim 3, characterized in that: A pushing plate (154) is fixedly connected to the circumferential surface of the sliding rod (153). A chamfered block (155) is fixedly connected to the bottom of the inner wall of the hollow frame (151). A rotating rod (156) is rotatably connected to the inner wall of the chamfered block (155) through a torsion spring.

5. A harvesting machine capable of screening Rosa roxburghii tratt according to claim 4, characterized in that: A fixing frame (157) is fixedly connected to the circumferential surface of the rotating rod (156). A straight plate (158) is fixedly connected to the circumferential surface of the rotating rod (156). A second limiting plate (159) is fixedly connected to the left side of the L-shaped plate one (10). A net pocket (1510) is installed in the inner wall of the fixing frame (157).

6. A harvesting machine capable of screening rosa roxburghii tratt according to claim 5, characterized in that: The top of the straight plate (158) is in contact with the bottom of the second limiting plate (159). The inner wall of the sieve plate (11) is in contact with the bottom of the pushing plate (154).

7. A harvesting machine capable of screening Rosa roxburghii tratt according to claim 6, characterized in that: The quick-release mechanism (16) includes a connecting plate (161). The connecting plate (161) is fixedly connected to the top of the pushing plate (154). A second convex block (162) is fixedly connected to the inner wall of the sieve plate (11). An inner groove block (163) is fixedly connected to the front part of the fixing frame (157).

8. A harvesting machine capable of screening Rosa roxburghii tratt according to claim 7, characterized in that: A fixing block (164) is fixedly connected to the front part of the net pocket (1510). A pulling rod (165) is slidably connected to the inner wall of the fixing block (164).

9. A harvesting machine capable of screening Rosa roxburghii Tratt according to claim 8, characterized in that: A wedge (166) is fixedly connected to the left side of the pulling rod (165). A moving rod (167) is slidably connected to the inner wall of the inner groove block (163) through a spring. A clamping block (168) is fixedly connected to the bottom of the moving rod (167).

10. A harvesting machine capable of screening Rosa roxburghii tratt according to claim 9, characterized in that: The bottom of the connecting plate (161) is in contact with the inner wall of the sieve plate (11). The inner wall of the inner groove block (163) is in contact with the left side of the wedge (166). The surface of the wedge (166) is in contact with the surface of the clamping block (168).

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