Adjustable folding seeder

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to an adjustable folding seeder which comprises a first auxiliary beam, a second auxiliary beam, a main beam, a first seeding unit, a second seeding unit, a third seeding unit and a traction frame, the first auxiliary beam, the main beam and the second auxiliary beam are arranged at intervals from left to right, and the front side of the middle of the main beam and the rear side of the lower end of the traction frame are fixedly installed together. The adjustable folding seeding machine is reasonable and compact in structure, the second seeding unit and the third seeding unit are lifted to the position above the first seeding unit through the left lifting mechanism and the right lifting mechanism, so that the transportation width of the adjustable folding seeding machine is reduced, machine and tool transportation is facilitated, the trafficability of a road is improved, and the second seeding unit and the third seeding unit are symmetrically arranged; meanwhile, damage to parts caused by inclination can be avoided after lifting, and the distances among the first seeding unit, the second seeding unit and the third seeding unit can be adjusted by arranging a first adjusting mechanism, a second adjusting mechanism and a third adjusting mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery and is an adjustable folding seeder. Background Art

[0002] Common sowing methods include broadcast sowing, row sowing, hole sowing (spot sowing), precision sowing, film sowing, and no-till sowing. Film sowing is a sowing method in which a plastic film is laid on the surface of the seedbed during sowing. After the seeds emerge, the seedlings grow outside the film. This method can be sowing seeds first, then laying the film, and then breaking the film manually after the seedlings emerge; or laying the film first, then drilling holes in the film and sowing.

[0003] The film-laying seeder is used for film-laying and sowing of corn, beets, melons and tomatoes in sandy loam, loam and light clay soils without weeds and with loose soil. It can simultaneously complete seedbed shaping, furrowing, film-laying, film-pressing, film-edge covering, film-hole drilling and sowing, film-hole covering and seed-row pressing. In the film-laying operation, the film-laying seeder needs to repeatedly cut the ground film, support the film manually and cover the ground film with soil. Before the tractor starts to move, it is necessary to manually cut and support the ground film, so that the film-pressing wheels press the two sides of the film, and manually cover the ground film head with soil. After the above work is ready, the tractor moves forward to drive the seeder forward, and the covering disc covers the soil and presses the two sides of the ground film, thus completing the film-laying process.

[0004] The foldable seeders currently in use generally raise the seeders on both sides. Although this makes it easier to transfer and transport the seeders, the foldable seeders cannot adjust the spacing according to the agronomic requirements of the crops, especially in the large-scale planting environment of the northwest. When sowing multiple varieties of seeds, the spacing needs to be adjusted according to the agronomic requirements of the seeds. Ordinary folding seeders are difficult to adjust the spacing, which increases the preparation time before sowing. During the sowing process, if the unsown area is not complete or the machine sows to the edge of the cultivated area, the spacing cannot be adjusted, which increases the difficulty of the sowing operation. Summary of the invention

[0005] The utility model provides an adjustable folding seeder, which overcomes the deficiencies of the prior art and can effectively solve the problems of the prior folding seeders that the spacing adjustment is difficult and the operation range adjustment is difficult.

[0006] The technical scheme of the utility model is realized by the following measures: an adjustable folding seeder comprises a first sub-beam, a second sub-beam, a main beam, a first seeder group, a second seeder group, a third seeder group and a traction frame, wherein the first sub-beam, the main beam and the second sub-beam are arranged at intervals from left to right, the front side of the middle of the main beam and the rear side of the lower end of the traction frame are fixedly installed together, a plurality of first seeder groups are installed at intervals on the left and right of the rear of the main beam, at least one second seeder group is installed at intervals on the left and right of the rear of the first sub-beam, and third seeder groups corresponding to the second seeder groups and having the same structure are installed at intervals on the left and right of the rear of the second sub-beam A seeding machine group, a left lifting mechanism capable of lifting the first sub-beam is provided on the left side of the traction frame, a right lifting mechanism capable of lifting the second sub-beam is provided on the right side of the traction frame, a first adjusting mechanism capable of adjusting the distance between two adjacent first seeding machine groups is provided on the rear side of the traction frame, a second adjusting mechanism capable of adjusting the distance between each second seeding machine group and the leftmost first seeding machine group is provided at the rear of the left lifting mechanism, a third adjusting mechanism capable of adjusting the distance between each third seeding machine group and the rightmost first seeding machine group is provided at the rear of the right lifting mechanism, and the third adjusting mechanism has the same structure as the second adjusting mechanism and is symmetrically arranged.

[0007] The following are further optimizations and / or improvements to the above utility model technical solution:

[0008] As a preference, the above-mentioned first seeder group may include several seeder groups, the seeder group includes two first sub-seeders spaced apart on the left and right, the first adjusting mechanism includes a first connecting beam and a first double-rod hydraulic cylinder, the upper part of the main beam is slidably mounted with a first connecting beam corresponding to the first sub-seeder one by one, each first connecting beam is installed together with the front part of the corresponding first sub-seeder, the rear side of the traction frame corresponding to the position of each seeder group is fixedly installed together with the front side of the cylinder body of the first double-rod hydraulic cylinder, the left end of the piston rod of the first double-rod hydraulic cylinder is hingedly installed together with the upper side of the left first connecting beam, and the right end of the piston rod of the first double-rod hydraulic cylinder is hingedly installed together with the upper side of the right first connecting beam.

[0009] As another preference, the above-mentioned first seeding machine group may also include a main seeding machine arranged between the two first auxiliary seeding machines in the middle.

[0010] The above-mentioned left lifting mechanism may include a left mounting frame, connecting ear plates, upper swing arms, lower swing arms, left lifting cylinders, first hinge assemblies, second hinge assemblies, third hinge assemblies, and fourth hinge assemblies. There is a left movable slot with an upward opening on the left side of the towing frame. The upper first hinge assembly and the second hinge assembly are installed at intervals up and down on the inner side of the upper part of the left movable slot. The left mounting frame is fixedly installed on the front side of the first auxiliary beam. A connecting ear plate is fixedly installed on the right side of the front part of the left mounting frame corresponding to the position of the left movable slot. The cross-section of the connecting ear plate is in a shape of a "匚" with an opening to the right. The third hinge assembly and the fourth hinge assembly are installed at intervals up and down on the inner side of the connecting ear plate. An upper swing arm with its right part inclined upward relative to its left part is installed between the third hinge assembly and the first hinge assembly. A lower swing arm with a bent middle part upward is hingedly installed between the fourth hinge assembly and the second hinge assembly. A left lifting cylinder is hingedly installed on the inner side of the lower part of the left movable slot corresponding to the position below the second hinge assembly. The left end of the piston rod of the left lifting cylinder is hingedly installed with the middle part of the lower swing arm. The right lifting mechanism has the same structure as the left lifting mechanism and is symmetrically arranged.

[0011] As a preference, the above-mentioned second seeding unit may include a second auxiliary seeder provided on the lower right side of the first auxiliary beam. The second adjusting mechanism includes a single-rod hydraulic cylinder and a second connecting crossbeam. The second connecting crossbeam is slidably installed on the right part of the first auxiliary beam. The rear side of the second connecting crossbeam is installed with the upper front side of the second auxiliary seeder. A single-rod hydraulic cylinder is hingedly installed between the upper side of the second connecting crossbeam and the upper side of the left part of the first auxiliary beam.

[0012] As another preference, the above-mentioned second seeding unit may include two third auxiliary seeders provided at intervals on the lower side of the first auxiliary beam. The second adjusting mechanism includes a second double-rod hydraulic cylinder and a third connecting crossbeam. The upper part of the first auxiliary beam is slidably installed with third connecting crossbeams corresponding to the third auxiliary seeders at intervals left and right. The rear side of the third connecting crossbeam is installed with the upper front side of the third auxiliary seeder. The upper side of the first auxiliary beam corresponding to the position between the two third connecting crossbeams and the cylinder body of the second double-rod hydraulic cylinder are fixedly installed together. The left end of the piston rod of the second double-rod hydraulic cylinder is hingedly installed with the upper side of the left third connecting crossbeam. The right end of the piston rod of the second double-rod hydraulic cylinder is hingedly installed with the upper side of the right third connecting crossbeam.

[0013] The cross-section of the above-mentioned first auxiliary beam may be rectangular. Two first connecting components are provided at intervals left and right on the lower side of the second connecting crossbeam. The first connecting component includes a fixed bottom plate, a sliding frame, a connecting plate, and a parallelogram link. The fixed bottom plate is fixedly installed on the lower side of the second connecting crossbeam. Two sliding frames sleeved on the outer side of the first auxiliary beam are fixedly installed at intervals left and right on the lower side of the fixed bottom plate. The connecting plate is fixedly installed at the front part of the sliding frame. A number of positioning screw holes penetrating through front and back are provided at intervals on the front side of the connecting plate. A parallelogram link is installed between the sliding frame and the upper front side of the second auxiliary seeder.

[0014] The cross section of the main beam may be rectangular, and two second connecting assemblies are installed at intervals on the left and right between the first connecting crossbeam and the corresponding front part of the first auxiliary seeder, and the second connecting assemblies have the same structure as the first connecting assemblies.

[0015] The above-mentioned first auxiliary seeder may include a mounting frame, a soil leveling plate, a film laying support, a ground film roll, a film spreading roller, a pressing roller, a furrowing disc, a seeder, a seed box, a first soil covering disc, a second soil covering disc and a soil covering roller. The upper front side of the mounting frame is installed together with the lower side of the second connecting component, and a V-shaped soil leveling plate with an opening facing backward is fixedly installed on the front side of the mounting frame corresponding to the position in front of the main beam, and a film laying support is fixedly installed on the upper side of the mounting frame corresponding to the rear position of the second connecting component. A ground film roll is rotatably installed on the upper part of the film laying support, and a film spreading roller is rotatably installed on the lower part of the mounting frame corresponding to the position below the ground film roll, and a pressing roller is rotatably installed on the inner front side of the mounting frame corresponding to the position between the film spreading roller and the main beam. Grooving discs are rotatably installed on the lower front side of the mounting frame at the left and right ends of the pressure roller, and the two groove opening discs are both located in front of the film spreading roller. At least one seeder is rotatably installed at intervals on the left and right sides of the mounting frame corresponding to the rear position of the film spreading roller, and a seed box is installed above each seeder. The first soil covering disc located behind the film spreading roller is rotatably installed on the lower side of the mounting frame corresponding to the front position of each seeder, and a soil covering roller is rotatably installed on the inner side of the rear of the mounting frame corresponding to the rear position of the seeder, and the second soil covering disc is rotatably installed on the lower rear side of the mounting frame corresponding to the left and right sides of the soil covering roller. The main seeder, the second auxiliary seeder and the third auxiliary seeder have the same structure as the first auxiliary seeder.

[0016] The above-mentioned first hinge assembly may include a hinge pin, a rotating sleeve, a locking nut and an oil nozzle. A hinge pin with a rear end located behind the traction frame is installed on the inner side of the upper part of the left movable groove, and a locking nut is screwed on the outer side of the rear of the hinge pin. A rotating sleeve fixedly installed with the right end of the upper rotating arm is rotatably installed on the outer side of the middle part of the hinge pin. A number of arc-shaped oil storage grooves opening inward are discretely distributed on the inner side of the rotating sleeve. An oil discharge groove opening outward is axially arranged on the outer side of the middle part of the hinge pin. An oil filling hole whose rear end is connected to the oil discharge groove is arranged in the center of the front end of the hinge pin corresponding to the front position of the traction frame. An oil nozzle is fixedly installed on the front end of the hinge pin corresponding to the position of the oil filling hole. The second hinge assembly, the third hinge assembly and the fourth hinge assembly have the same structure as the first hinge assembly.

[0017] The utility model has a reasonable and compact structure, and the second seeding machine group and the third seeding machine group are lifted above the first seeding machine group by the left lifting mechanism and the right lifting mechanism, thus reducing the transport width of the adjustable folding seeding machine, facilitating the transportation of machinery and equipment, and improving the passability of the road; the second seeding machine group and the third seeding machine group are symmetrically arranged, and after lifting, they can avoid tilting and causing damage to parts; by arranging the left lifting mechanism and the right lifting mechanism, the adjustable folding seeding machine can be suitable for narrow film or wide film operations; by arranging the first adjusting mechanism, the second adjusting mechanism and the third adjusting mechanism, the spacing between the first seeding machine group, the second seeding machine group and the third seeding machine group can be adjusted, so as to realize seeding operations with various row spacings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 This is a schematic diagram of the main structure of the first embodiment of the utility model.

[0019] Attached Figure 2 It is a schematic diagram of the top structure of the first embodiment of the utility model.

[0020] Attached Figure 3 It is a side structural schematic diagram of the first seeding machine group in the first embodiment of the utility model.

[0021] Attached Figure 4 This is a schematic diagram of the main structure of the traction frame in the first embodiment of the utility model.

[0022] Attached Figure 5 It is a rear structural schematic diagram of the traction frame in the first embodiment of the utility model.

[0023] Attached Figure 6 For attachment Figure 4 Schematic diagram of the main structure after the left lifting mechanism and the right lifting mechanism in the middle are in action.

[0024] Attached Figure 7 It is a schematic diagram of the main structure after the second sowing machine group and the third sowing machine group in the first embodiment of the utility model are raised.

[0025] Attached Figure 8 For attachment Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0026] Attached Fig. 9 This is a right view structural schematic diagram of the first connecting component in the seventh embodiment of the utility model.

[0027] Attached Fig.10 This is a schematic diagram of the top structure of the first connecting component in the seventh embodiment of the utility model.

[0028] Attached Fig.11 This is a schematic diagram of the main structure of the first connecting component in the seventh embodiment of the utility model.

[0029] The codes in the attached drawings are: 1 is the first auxiliary beam, 2 is the second auxiliary beam, 3 is the main beam, 4 is the traction frame, 5 is the first connecting beam, 6 is the first double-rod hydraulic cylinder, 7 is the left mounting frame, 8 is the connecting ear plate, 9 is the upper rotating arm, 10 is the lower rotating arm, 11 is the left lifting cylinder, 12 is the second hinge assembly, 13 is the third hinge assembly, 14 is the fourth hinge assembly, 15 is the left movable groove, 16 is the second auxiliary seeder, 17 is the single-rod hydraulic cylinder, 18 is the second connecting beam, 19 is the fixed bottom plate, 20 is the sliding frame, 21 is the connecting plate, 22 is the positioning screw hole, 23 is the parallelogram shaped connecting rod, 24 is the second connecting assembly, 25 is the third connecting assembly, 26 is the mounting frame, 27 is the soil leveling plate, 28 is the film laying bracket, 29 is the ground film roll, 30 is the film spreading roller, 31 is the furrowing disc, 32 is the seeder, 33 is the seed box, 34 is the first soil covering disc, 35 is the second soil covering disc, 36 is the soil covering roller, 37 is the hinge pin, 38 is the rotating sleeve, 39 is the locking nut, 40 is the oil nozzle, 41 is the oil drain groove, 42 is the oil filling hole, 43 is the oil storage tank, 44 is the third seeder group, 45 is the right lifting mechanism, 46 is the third adjusting mechanism, and 47 is the pressing roller. DETAILED DESCRIPTION

[0030] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0031] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0032] The present invention is further described below in conjunction with the embodiments and drawings:

[0033] Embodiment 1: As shown in the attached Figures 1 to 8As shown, the adjustable folding seeder includes a first sub-beam 1, a second sub-beam 2, a main beam 3, a first seeder group, a second seeder group, a third seeder group 44 and a traction frame 4. The first sub-beam 1, the main beam 3 and the second sub-beam 2 are arranged at intervals from left to right. The front side of the middle of the main beam 3 is fixedly installed with the rear side of the lower end of the traction frame 4. A plurality of first seeder groups are installed at intervals on the left and right sides of the rear of the main beam 3. At least one second seeder group is installed at intervals on the left and right sides of the rear of the first sub-beam 1. The third seeder group 44 corresponding to the second seeder group and having the same structure as the second seeder group is installed at intervals on the left and right sides of the rear of the second sub-beam 2. The left side of the traction frame 4 A left lifting mechanism capable of lifting the first sub-beam 1 is provided, a right lifting mechanism 45 capable of lifting the second sub-beam 2 is provided on the right side of the traction frame 4, a first adjusting mechanism capable of adjusting the distance between two adjacent first sowing machine groups is provided on the rear side of the traction frame 4, a second adjusting mechanism capable of adjusting the distance between each second sowing machine group and the leftmost first sowing machine group is provided at the rear of the left lifting mechanism, a third adjusting mechanism 46 capable of adjusting the distance between each third sowing machine group 44 and the rightmost first sowing machine group is provided at the rear of the right lifting mechanism 45, and the third adjusting mechanism 46 has the same structure as the second adjusting mechanism and is symmetrically arranged.

[0034] During use, through such an arrangement, the second sowing machine group and the third sowing machine group 44 can be lifted above the first sowing machine group through the left lifting mechanism and the right lifting mechanism 45, thereby reducing the transportation width of the adjustable folding sowing machine, facilitating the transportation of machinery and equipment, and improving the passability of the road. The second sowing machine group and the third sowing machine group 44 are symmetrically arranged, and after lifting, they can avoid tilting and causing damage to parts. By arranging the left lifting mechanism and the right lifting mechanism 45, the adjustable folding sowing machine can be suitable for narrow film or wide film operations. By arranging the first adjustment mechanism, the second adjustment mechanism and the second adjustment mechanism 46, the spacing between the first sowing machine group, the second sowing machine group and the third sowing machine group 44 can be adjusted to achieve sowing operations with various row spacings.

[0035] The above adjustable folding seeder can be further optimized and / or improved according to actual needs:

[0036] Embodiment 2: As an optimization of the above embodiment, as shown in the attached Figure 1 , 2As shown in , 3, 5, and 7, the first seeding machine group includes several seeding machine groups, and the seeding machine group includes two first auxiliary seeding machines spaced apart on the left and right. The first adjusting mechanism includes a first connecting beam 5 and a first double-rod hydraulic cylinder 6. The first connecting beams 5 corresponding to the first auxiliary seeding machines are slidably installed on the upper part of the main beam 3, and each first connecting beam 5 is installed together with the front part of the corresponding first auxiliary seeding machine. The rear side of the traction frame 4 corresponding to the position of each seeding machine group is fixedly installed together with the front side of the cylinder body of the first double-rod hydraulic cylinder 6. The left end of the piston rod of the first double-rod hydraulic cylinder 6 is hingedly installed with the upper side of the left first connecting beam 5, and the right end of the piston rod of the first double-rod hydraulic cylinder 6 is hingedly installed with the upper side of the right first connecting beam 5.

[0037] In this way, the first seeding machine group includes an even number of first sub-seeders, and the number of first sub-seeders can be set according to the planting range of the crop to adjust the working width of the first seeding machine group. According to the needs, the number of first double-rod hydraulic cylinders 6 corresponds to the number of seeding machine groups. The first double-rod hydraulic cylinders 6 are existing well-known double-axis hydraulic cylinders with adjustable strokes. Several first double-rod hydraulic cylinders 6 are connected by existing well-known oil circuit distributors to achieve synchronous action. The rear side of the cylinder body of the first double-rod hydraulic cylinder 6 and the rear side of the traction frame 4 are fixedly installed together by existing well-known connecting rods. In this way, the left and right ends of the piston rods of each first double-rod hydraulic cylinder 6 can move the corresponding two first sub-seeders left and right after the action, thereby adjusting the distance between the two first sub-seeders to meet the crop planting row spacing requirements.

[0038] Embodiment 3: As an optimization of the above embodiment, the first seeding machine group further includes a main seeding machine arranged between the two first auxiliary seeding machines in the middle.

[0039] The difference between this embodiment and the second embodiment is that a main seed drill is added. In this way, the first seed drill group has an odd number of seed drills, and the number of seed drills can be set according to the planting range of the crop to adjust the working width of the first seed drill group.

[0040] Embodiment 4: As an optimization of embodiment 2, as shown in the attached Figure 1 , 3As shown in FIGS. 0 to 7, the left lifting mechanism includes a left mounting frame 7, a connecting ear plate 8, an upper swing arm 9, a lower swing arm 10, a left lifting oil cylinder 11, a first hinge assembly, a second hinge assembly 12, a third hinge assembly 13, and a fourth hinge assembly 14. A left movable groove 15 with an upward opening is provided on the left side of the traction frame 4. An upper first hinge assembly and a second hinge assembly 12 are installed at upper and lower intervals on the inner side of the upper part of the left movable groove 15. The left mounting frame 7 is fixedly installed on the front side of the first auxiliary beam 1. A connecting ear plate 8 is fixedly installed on the right side of the front part of the left mounting frame 7 corresponding to the position of the left movable groove 15. The cross-section of the connecting ear plate 8 is in a U-shape with an opening to the right. A third hinge assembly 13 and a fourth hinge assembly 14 are installed at upper and lower intervals on the inner side of the connecting ear plate 8. An upper swing arm 9 with its right part inclined upward relative to its left part is installed between the third hinge assembly 13 and the first hinge assembly. A lower swing arm 10 with its middle bent upward is hingedly installed between the fourth hinge assembly 14 and the second hinge assembly 12. A left lifting oil cylinder 11 is hingedly installed on the inner side of the lower part of the left movable groove 15 corresponding to the lower position of the second hinge assembly 12. The left end of the piston rod of the left lifting oil cylinder 11 is hingedly installed with the middle part of the lower swing arm 10. The right lifting mechanism 45 has the same structure as the left lifting mechanism and is symmetrically arranged.

[0041] During the use process, by providing the left movable groove 15, it is possible to prevent the front and rear swinging during the swinging process of the upper swing arm 9 and the lower swing arm 10, and improve the stability when the left mounting frame 7 rises. The right part of the lower swing arm 10 is inclined upward relative to its left part and its middle is bent upward to the upper left. According to requirements, the left mounting frame 7 is in a U-shape with an opening to the rear. The bent part of the lower swing arm 10 and the left end of the piston rod of the left lifting oil cylinder 11 are hingedly installed together through a known hinge seat, which facilitates the connection between the left lifting oil cylinder 11 and the lower swing arm 10. After the piston rod of the left lifting oil cylinder 11 fully extends, it can make the rotation angle of the lower swing arm 10 larger. After the piston rod of the left lifting oil cylinder 11 fully extends, it can lift the second seeding unit installed on the lower side of the first auxiliary beam 1 above the left part of the first seeding unit, which can reduce the working width of the adjustable folding seeder, and at the same time facilitate the transportation and transfer of the adjustable folding seeder on a narrow road. When the adjustable folding seeder is sowing at the edge of the field or the sowing width is not enough for full-width sowing operation, the second seeding unit can also be lifted by the left lifting mechanism and / or the third seeding unit 44 can be lifted by the right lifting mechanism 45, and then narrow-width sowing operation can be carried out.

[0042] Embodiment 5: As an optimization of Embodiment 4, as shown in the attached Figure 1 、 2As shown in , 7, the second seeding machine group includes a second sub-seeder 16 arranged on the lower side of the right part of the first sub-beam 1, the second adjusting mechanism includes a single-rod hydraulic cylinder 17 and a second connecting beam 18, the second connecting beam 18 is slidably installed on the right part of the first sub-beam 1, the rear side of the second connecting beam 18 is installed together with the upper side of the front part of the second sub-seeder 16, and the single-rod hydraulic cylinder 17 is hingedly installed between the upper side of the second connecting beam 18 and the upper side of the left part of the first sub-beam 1.

[0043] According to the requirements, the single-rod hydraulic cylinder 17 is a known single-axis hydraulic cylinder with adjustable stroke. During use, the second auxiliary planter 16 can be moved left and right by extending or retracting the piston rod of the single-rod hydraulic cylinder 17, thereby adjusting the distance between the second auxiliary planter 16 and the left side of the first planter group, thereby adjusting the operating range of the adjustable folding planter.

[0044] Embodiment 6: As another optimization of embodiment 4, the second seeding machine group includes two third seeding machines arranged at intervals on the lower side of the first sub-beam, the second adjusting mechanism includes a second double-rod hydraulic cylinder and a third connecting beam, and third connecting beams corresponding to the third seeding machines are slidably installed at left and right intervals on the upper part of the first sub-beam, the rear side of the third connecting beam is installed together with the upper side of the front part of the third seeding machine, the upper side of the first sub-beam corresponding to the position between the two third connecting beams and the cylinder body of the second double-rod hydraulic cylinder are fixedly installed together, the left end of the piston rod of the second double-rod hydraulic cylinder is hingedly installed with the upper side of the third connecting beam on the left, and the right end of the piston rod of the second double-rod hydraulic cylinder is hingedly installed with the upper side of the third connecting beam on the right.

[0045] The only difference between this embodiment and the fifth embodiment is the different number of seed drills and the use of a second double-rod hydraulic cylinder. In the fifth embodiment, the second seed drill group includes a second sub-seeder arranged on the lower right side of the first sub-beam, while the second seed drill group in this embodiment includes two third sub-seeders arranged at intervals on the lower side of the first sub-beam. The second adjustment mechanism includes a second double-rod hydraulic cylinder and a third connecting beam. According to requirements, the second double-rod hydraulic cylinder is an existing well-known stroke-adjustable double-axis hydraulic cylinder. The second double-rod hydraulic cylinder has the same mechanism as the first double-rod hydraulic cylinder, and the third connecting beam has the same structure as the second connecting beam.

[0046] During use, the two second seeders can be moved closer to or farther away from each other by extending or retracting the two ends of the piston rod of the second double-rod hydraulic cylinder, thereby adjusting the distance between the third seeders and between the third seeder and the left side of the first seeder group, thereby completing the adjustment of the operating range of the adjustable folding seeder, meeting the agronomic planting row spacing modes of various planting areas, and being able to adapt to the planting requirements of various crops, with a wider range of adaptability.

[0047] Embodiment 7: As an optimization of Embodiment 6, as shown in the attached Figure 1 ,2 As shown in Figures 3, 5, 7, 9, 10 and 11, the first sub-beam 1 has a rectangular cross-section, and two first connecting components are provided at intervals on the left and right sides of the lower side of the second connecting crossbeam 18. The first connecting components include a fixed base plate 19, a sliding frame 20, a connecting plate 21 and a parallelogram connecting rod 23. A fixed base plate 19 is fixedly installed on the lower side of the second connecting crossbeam 18, and two sliding frames 20 mounted on the outer side of the first sub-beam 1 are fixedly installed at intervals on the left and right sides of the lower side of the fixed base plate 19. A connecting plate 21 is fixedly installed on the front of the sliding frame 20, and a plurality of positioning screw holes 22 that pass through the front and rear are provided at intervals on the front side of the connecting plate 21. A parallelogram connecting rod 23 is installed between the sliding frame 20 and the upper side of the front of the second sub-seeder 16.

[0048] The main beam 3 has a rectangular cross section. Two second connecting assemblies 24 are installed at intervals on the left and right sides between the first connecting cross beam 5 and the corresponding front part of the first auxiliary seeder. The second connecting assemblies 24 have the same structure as the first connecting assemblies.

[0049] According to the needs, a third connecting component 25 with the same structure as the first connecting component and symmetrically arranged is provided between the outer side of the second sub-beam 2 and the third sowing group 44. Two fourth connecting components are installed at intervals on the left and right between the rear side of each third connecting beam and the upper side of the front of the third sub-seeder. The fourth connecting component has the same structure as the first connecting component. The first sub-beam 1, the main beam 3, the first connecting beam 5, the second connecting beam 18 and the third connecting beam are all made of hollow square tubes. Four front-to-back through-the-box positioning screw holes 22 are provided at intervals on the front side of the connecting plate 21. Positioning screws can be installed in the positioning screw holes 22, so that the adjusted connecting components can be fixed, thereby improving the stability of the adjustable folding seeder during transportation and transfer. After the sowing operation is completed, the width and spacing of the first seeder group, the second seeder group and the third seeder group 44 are shortened, and the transfer passability is improved. In this way, there is no need to lift the second seeder group and the third seeder group 44, thereby improving the safety during transfer.

[0050] Embodiment 8: As an optimization of Embodiment 7, as shown in the attached Figure 1 , 2As shown in Figures 3 and 7, the first auxiliary seeder includes a mounting frame 26, a soil leveling plate 27, a film laying support 28, a ground film roll 29, a film spreading roller 30, a pressing roller 47, a furrowing disc 31, a seeder 32, a seed box 33, a first soil covering disc 34, a second soil covering disc 35 and a soil covering roller 36. The upper front side of the mounting frame 26 is installed together with the lower side of the second connecting component 24. A V-shaped soil leveling plate 27 with an opening facing backward is fixedly installed on the front side of the mounting frame 26 corresponding to the front position of the main beam 3, a film laying support 28 is fixedly installed on the upper side of the mounting frame 26 corresponding to the rear position of the second connecting component 24, a ground film roll 29 is rotatably installed on the upper part of the film laying support 28, a film spreading roller 30 is rotatably installed on the lower part of the mounting frame 26 corresponding to the position below the ground film roll 29, and a film spreading roller 30 is rotatably installed on the inner front side of the mounting frame 26 corresponding to the position between the film spreading roller 30 and the main beam 3. A pressure roller 47, a ditching disc 31 is rotatably installed on the lower front side of the mounting frame 26 corresponding to the left and right ends of the pressure roller 47, and the two ditching discs 31 are both located in front of the film spreading roller 30, and at least one seeder 32 is rotatably installed in the mounting frame 26 corresponding to the rear position of the film spreading roller 30, and a seed box 33 is installed above each seeder 32, and a first soil covering disc 34 located behind the film spreading roller 30 is rotatably installed on the lower side of the mounting frame 26 corresponding to the front position of each seeder 32, and a soil covering roller 36 is rotatably installed on the inner side of the rear of the mounting frame 26 corresponding to the rear position of the seeder 32, and a second soil covering disc 35 is rotatably installed on the lower rear side of the mounting frame 26 corresponding to the left and right positions of the soil covering roller 36. The main seeder, the second auxiliary seeder 16 and the third auxiliary seeder have the same structure as the first auxiliary seeder.

[0051] According to the requirements, when the two first soil covering discs 34 and the two first soil covering discs 34 rotate, the soil on both sides can be transported to the middle, and the two ditching discs 31 can ditch on both sides of the pressing roller 47, which is convenient for laying and covering the film. The seeder 32 is a known air-suction seeder, and a negative pressure fan connected to the air-suction seeder is installed at the front of the traction frame 4. The input shaft of the fan can be connected to the output shaft of the traction tractor through a pulley transmission. During use, through such a setting, the first sowing machine group, the second sowing machine group and the third sowing machine group 44 can complete the seed bed shaping, ditching, film laying, film pressing, film edge covering, film hole drilling and sowing, film hole covering and seed row pressing operations when working, improve the sowing operation efficiency, and when performing conventional sowing, it is no longer necessary to install the ground film on the ground film roll 29.

[0052] Embodiment 9: As an optimization of Embodiment 8, as shown in the attached Figure 1 , 2As shown in 4 to 8, the first hinge assembly includes a hinge pin 37, a rotating sleeve 38, a locking nut 39 and an oil nozzle 40. The hinge pin 37 with its rear end located behind the traction frame 4 is installed on the inner side of the upper part of the left movable groove 15, and the locking nut 39 is screwed on the outer side of the rear of the hinge pin 37. A rotating sleeve 38 fixedly installed with the right end of the upper rotating arm 9 is rotatably installed on the outer side of the middle part of the hinge pin 37. A plurality of arc-shaped oil storage grooves 43 with openings facing inward are discretely distributed on the inner side of the rotating sleeve 38. An oil discharge groove 41 with an opening facing outward is axially provided on the outer side of the middle part of the hinge pin 37. An oil filling hole 42 whose rear end is connected to the oil discharge groove 41 is provided in the center of the front end of the hinge pin 37 corresponding to the front position of the traction frame 4. An oil nozzle 40 is fixedly installed on the front end of the hinge pin 37 corresponding to the position of the oil filling hole 42. The second hinge assembly 12, the third hinge assembly 13 and the fourth hinge assembly 14 have the same structure as the first hinge assembly.

[0053] During use, lubricating grease is added between the inner side of the rotating sleeve 38 and the outer side of the hinge pin 37 through the oil nozzle 40. This can reduce the noise generated by the friction between the hinge pin 37 and the rotating sleeve 38 when the lifting mechanism is in motion. At the same time, it can also reduce the wear of the hinge pin 37 and the rotating sleeve 38, enhance wear resistance, extend service life, and facilitate user use and later replacement or maintenance.

[0054] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. An adjustable folding seeder, characterized in that It includes a first secondary beam, a second secondary beam, a main beam, a first seeding unit, a second seeding unit, a third seeding unit and a towing frame. The first secondary beam, the main beam and the second secondary beam are arranged at intervals from left to right. The front side of the middle part of the main beam is fixedly installed with the rear side of the lower end of the towing frame. A number of first seeding units are installed at intervals on the left and right of the rear part of the main beam. At least one second seeding unit is installed at intervals on the left and right of the rear part of the first secondary beam. The third seeding unit which is in one-to-one correspondence with the second seeding unit and has the same structure is installed at intervals on the left and right of the rear part of the second secondary beam. A left lifting mechanism capable of lifting the first secondary beam is provided on the left side of the towing frame. A right lifting mechanism capable of lifting the second secondary beam is provided on the right side of the towing frame. A first adjusting mechanism capable of adjusting the distance between two adjacent first seeding units is provided on the rear side of the towing frame. A second adjusting mechanism capable of adjusting the distance between each second seeding unit and the leftmost first seeding unit is provided at the rear part of the left lifting mechanism. A third adjusting mechanism capable of adjusting the distance between each third seeding unit and the rightmost first seeding unit is provided at the rear part of the right lifting mechanism. The third adjusting mechanism has the same structure as the second adjusting mechanism and is symmetrically arranged.

2. The adjustable folding seeder according to claim 1, characterized in that The first seeding unit includes a number of seeding units. The seeding unit includes two first secondary seeders arranged at intervals on the left and right. The first adjusting mechanism includes a first connecting cross beam and a first double-rod hydraulic cylinder. The first connecting cross beam corresponding to the first secondary seeder is slidably installed on the upper part of the main beam. Each first connecting cross beam is installed with the front part of the corresponding first secondary seeder. The rear side of the towing frame corresponding to the position of each seeding unit is fixedly installed with the front side of the cylinder body of the first double-rod hydraulic cylinder. The left end of the piston rod of the first double-rod hydraulic cylinder is hinged and installed on the upper side of the left first connecting cross beam. The right end of the piston rod of the first double-rod hydraulic cylinder is hinged and installed on the upper side of the right first connecting cross beam.

3. The adjustable folding planter according to claim 2, characterized in that The first seeding unit further includes a main seeder arranged between two first secondary seeders in the middle.

4. The adjustable folding seeder according to claim 1 or 2, characterized in that The left lifting mechanism includes a left mounting frame, a connecting ear plate, an upper rotating arm, a lower rotating arm, a left lifting oil cylinder, a first hinge assembly, a second hinge assembly, a third hinge assembly and a fourth hinge assembly. A left movable slot with an upward opening is provided on the left side of the towing frame. The upper first hinge assembly and the second hinge assembly are installed at intervals up and down on the inner side of the upper part of the left movable slot. The left mounting frame is fixedly installed on the front side of the first secondary beam. The connecting ear plate is fixedly installed on the right side of the front part of the left mounting frame corresponding to the position of the left movable slot. The cross section of the connecting ear plate is in a shape of a "匚" with an opening to the right. The third hinge assembly and the fourth hinge assembly are installed at intervals up and down on the inner side of the connecting ear plate. The upper rotating arm with the right part inclined upward relative to the left part is installed between the third hinge assembly and the first hinge assembly. The lower rotating arm with a bent middle part upward is hinged and installed between the fourth hinge assembly and the second hinge assembly. The left lifting oil cylinder is hinged and installed on the inner side of the lower part of the left movable slot corresponding to the position below the second hinge assembly. The left end of the piston rod of the left lifting oil cylinder is hinged and installed with the middle part of the lower rotating arm. The right lifting mechanism has the same structure as the left lifting mechanism and is symmetrically arranged.

5. The adjustable folding planter according to claim 4, characterized in that The second seeder group includes a second sub-seeder arranged on the lower side of the right part of the first sub-beam, the second adjusting mechanism includes a single-rod hydraulic cylinder and a second connecting beam, the second connecting beam is slidably installed on the right part of the first sub-beam, the rear side of the second connecting beam is installed together with the upper side of the front part of the second sub-seeder, and a single-rod hydraulic cylinder is hingedly installed between the upper side of the second connecting beam and the upper side of the left part of the first sub-beam.

6. The adjustable folding planter according to claim 4, characterized in that The second seeder group includes two third seeders arranged at intervals on the lower side of the first sub-beam, the second adjusting mechanism includes a second double-rod hydraulic cylinder and a third connecting beam, third connecting beams corresponding to the third seeders are slidably installed at left and right intervals on the upper part of the first sub-beam, the rear side of the third connecting beam is installed together with the upper side of the front part of the third seeder, the upper side of the first sub-beam corresponding to the position between the two third connecting beams and the cylinder body of the second double-rod hydraulic cylinder are fixedly installed together, the left end of the piston rod of the second double-rod hydraulic cylinder is hingedly installed with the upper side of the third connecting beam on the left, and the right end of the piston rod of the second double-rod hydraulic cylinder is hingedly installed with the upper side of the third connecting beam on the right.

7. The adjustable folding planter according to claim 5, characterized in that The first sub-beam has a rectangular cross-section, and two first connecting components are arranged at intervals on the left and right sides of the lower side of the second connecting crossbeam. The first connecting component includes a fixed base plate, a sliding frame, a connecting plate and a parallelogram connecting rod. A fixed base plate is fixedly installed on the lower side of the second connecting crossbeam, and two sliding frames are fixedly installed on the left and right sides of the lower side of the fixed base plate and are sleeved on the outer side of the first sub-beam. A connecting plate is fixedly installed on the front of the sliding frame, and a number of positioning screw holes are arranged at intervals on the front side of the connecting plate, and a parallelogram connecting rod is installed between the sliding frame and the upper side of the front of the second sub-seeder; or / and, the main beam has a rectangular cross-section, and two second connecting components are arranged at intervals on the left and right sides between the first connecting crossbeam and the corresponding front of the first sub-seeder, and the second connecting component has the same structure as the first connecting component.

8. The adjustable folding planter according to claim 7, characterized in that The first auxiliary seeder includes a mounting frame, a soil leveling plate, a film laying support, a ground film roll, a film spreading roller, a pressing roller, a furrowing disc, a seeder, a seed box, a first soil covering disc, a second soil covering disc and a soil covering drum. The upper front side of the mounting frame is installed together with the lower side of the second connecting assembly. A V-shaped soil leveling plate with an opening facing backward is fixedly installed on the front side of the mounting frame corresponding to the position in front of the main beam, a film laying support is fixedly installed on the upper side of the mounting frame corresponding to the position behind the second connecting assembly, a ground film roll is rotatably installed on the upper part of the film laying support, a film spreading roller is rotatably installed on the lower part of the mounting frame corresponding to the position below the ground film roll, a pressing roller is rotatably installed on the inner front side of the mounting frame corresponding to the position between the film spreading roller and the main beam, and a pressing roller is rotatably installed on the inner front side of the mounting frame corresponding to the position between the film spreading roller and the main beam. Grooving discs are rotatably installed on the lower front side of the mounting frame at the left and right ends of the roller, and the two groove opening discs are both located in front of the film spreading roller. At least one seeder is rotatably installed at intervals on the left and right sides of the mounting frame corresponding to the rear position of the film spreading roller, and a seed box is installed above each seeder. The first soil covering disc located behind the film spreading roller is rotatably installed on the lower side of the mounting frame corresponding to the front position of each seeder, and a soil covering roller is rotatably installed on the inner side of the rear of the mounting frame corresponding to the rear position of the seeder, and the second soil covering disc is rotatably installed on the lower rear side of the mounting frame corresponding to the left and right sides of the soil covering roller. The main seeder, the second auxiliary seeder and the third auxiliary seeder have the same structure as the first auxiliary seeder.

9. The adjustable folding planter according to claim 4, characterized in that The first hinge assembly includes a hinge pin, a rotating sleeve, a locking nut and an oil nozzle. A hinge pin with a rear end located behind the traction frame is installed on the inner side of the upper part of the left movable groove, and a locking nut is screwed on the outer side of the rear part of the hinge pin. A rotating sleeve fixedly installed with the right end of the upper rotating arm is rotatably installed on the outer side of the middle part of the hinge pin. A number of arc-shaped oil storage grooves opening inward are discretely distributed on the inner side of the rotating sleeve. An oil discharge groove opening outward is axially provided on the outer side of the middle part of the hinge pin. An oil filling hole whose rear end is connected with the oil discharge groove is provided in the center of the front end of the hinge pin corresponding to the front position of the traction frame. Oil nozzles are fixedly installed on the front end of the hinge pin corresponding to the position of the oil filling hole. The second hinge assembly, the third hinge assembly and the fourth hinge assembly have the same structure as the first hinge assembly.

10. The adjustable folding planter according to claim 5, 6, 7 or 8, characterized in that The first hinge assembly includes a hinge pin, a rotating sleeve, a locking nut and an oil nozzle. A hinge pin with a rear end located behind the traction frame is installed on the inner side of the upper part of the left movable groove, and a locking nut is screwed on the outer side of the rear part of the hinge pin. A rotating sleeve fixedly installed with the right end of the upper rotating arm is rotatably installed on the outer side of the middle part of the hinge pin. A number of arc-shaped oil storage grooves opening inward are discretely distributed on the inner side of the rotating sleeve. An oil discharge groove opening outward is axially provided on the outer side of the middle part of the hinge pin. An oil filling hole whose rear end is connected with the oil discharge groove is provided in the center of the front end of the hinge pin corresponding to the front position of the traction frame. Oil nozzles are fixedly installed on the front end of the hinge pin corresponding to the position of the oil filling hole. The second hinge assembly, the third hinge assembly and the fourth hinge assembly have the same structure as the first hinge assembly.

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