Seeding unit lifting device

Abstract

The utility model relates to a seeding unit lifting device which comprises a seeding machine cross beam connecting seat (1), a seeding unit connecting seat (2), a left upper connecting rod (3), a right upper connecting rod (4), a left lower connecting rod (5) and a right lower connecting rod (6), and further comprises a lifting cross beam (71), a lifting oil cylinder (72) and a lifting support (73), the two ends of the lifting cross beam (71) are fixedly connected with the left lower connecting rod (5) and the right lower connecting rod (6) in the transverse direction respectively, a cylinder body of the lifting oil cylinder (72) is hinged to the lifting support (73), and a jacking fork (74) matched with the lifting cross beam (71) is arranged at the end of a cylinder rod. When the device is used on the seeding machine, the seeding unit can be lifted and put down without manpower, manpower and labor are saved, time is saved, and the seeding speed can be increased. The time consumed by switching the seeding units can be reduced, and the working efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery, concretely relates to a seeding unit lifting device. BACKGROUND

[0002] A seeding unit can be installed on the seeding machine for single-ridge seeding, and multiple seeding units can be installed side by side to improve the seeding speed. However, when the seeding operation is performed, the number of ridges may be less than the number of seeding units or the number of ridges may change. In order to avoid repeated seeding or seeding in an unintended place, the existing seeding machine needs to be stopped when the number of ridges changes, and the seeding unit that does not need to continue seeding is lifted and fixed on the machine frame by manpower, or the lifted seeding unit is put down, so as to continue the seeding. Such conversion not only wastes time and manpower, but also requires the driver to lift it alone and needs the help of others, which occupies manpower. SUMMARY

[0003] The utility model aims at providing a seeding unit lifting device which does not need manpower to lift and put down the seeding unit, saves manpower, manpower, time, and improves the seeding speed.

[0004] The technical solution of the utility model is as follows: it comprises a seeding machine beam connecting seat, a seeding unit connecting seat, a left upper connecting rod, a right upper connecting rod, a left lower connecting rod and a right lower connecting rod, one end of the left upper connecting rod, the right upper connecting rod, the left lower connecting rod and the right lower connecting rod is respectively hinged with the seeding machine beam connecting seat, the other end is respectively hinged with the seeding unit connecting seat, and it further comprises a hydraulic lifting mechanism, the hydraulic lifting mechanism comprises a lifting beam, a lifting oil cylinder and a lifting support, the lifting support is installed on the seeding machine beam or the seeding machine beam connecting seat, the two ends of the lifting beam are respectively fixedly connected with the left lower connecting rod and the right lower connecting rod in the transverse direction, the cylinder body of the lifting oil cylinder is hinged with the lifting support, and the end part of the cylinder rod is provided with a jacking fork matched with the lifting beam.

[0005] The technical effect of the utility model is that the seeding unit lifting device does not need manpower to lift and put down the seeding unit on the seeding machine, saves manpower, manpower, time, and improves the seeding speed. It can realize quick switching operation when the number of ridges changes, so as to reduce the time consumed in switching the seeding unit and improve the operation efficiency. It has simple structure, good operation performance and is more convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 The utility model implements the three-dimensional structure diagram. DETAILED DESCRIPTION

[0007] As Figure 1As shown, it comprises a seeder beam connecting seat 1, a seeding unit connecting seat 2, a left upper connecting rod 3, a right upper connecting rod 4, a left lower connecting rod 5 and a right lower connecting rod 6, one end of the left upper connecting rod 3, the right upper connecting rod 4, the left lower connecting rod 5 and the right lower connecting rod 6 is respectively hinged with the left upper part, the right upper part, the left lower part and the right lower part of the seeder beam connecting seat 1, the other end is respectively hinged with the left upper part, the right upper part, the left lower part and the right lower part of the seeding unit connecting seat 2, it also comprises a hydraulic lifting mechanism 7, the hydraulic lifting mechanism 7 comprises a lifting beam 71, a lifting oil cylinder 72 and a lifting support 73, the lifting support 73 is installed on the seeder beam or the seeder beam connecting seat 1, the two ends of the lifting beam 71 are respectively fixedly connected with the left lower connecting rod 5 and the right lower connecting rod 6 transversely, the cylinder body of the lifting oil cylinder 72 is hinged with the lifting support 73, and the end of the cylinder rod is provided with a lifting fork 74 matched with the lifting beam 71.

[0008] One end of the left upper connecting rod 3, the right upper connecting rod 4, the left lower connecting rod 5 and the right lower connecting rod 6 is respectively hinged with the left upper part, the right upper part, the left lower part and the right lower part of the seeder beam connecting seat 1, the other end is respectively hinged with the left upper part, the right upper part, the left lower part and the right lower part of the seeding unit connecting seat 2.

[0009] The left lower connecting rod 5 and the right lower connecting rod 6 are provided with a connecting plate 8 fixedly connected with the left lower connecting rod 5 and the right lower connecting rod 6 at two ends.

[0010] The lifting fork 74 is a U-shaped fork opening towards the lifting beam 71.

[0011] The two ends of the lifting beam 71 are respectively connected with the left lower connecting rod 5 and the right lower connecting rod 6 close to the position of the seeder beam connecting seat 1.

[0012] The left upper connecting rod 3 and the right upper connecting rod 4 are provided with a left and right lower connecting rod 9 fixedly connected with the left upper connecting rod 3 and the right upper connecting rod 4 transversely between the positions close to the seeding unit connecting seat 2, a plurality of pull springs 10 for pulling the seeding unit are provided between the left and right lower connecting rod 9 and the lifting beam 71, and the upper ends of the pull springs 10 are connected with the left and right lower connecting rod 9 and the lower ends are connected with the lifting beam 71.

[0013] The lifting beam 71 and the left and right lower connecting rod 9 are respectively provided with a plurality of pull spring grooves 75 and 91 matched with the pull springs 10 at the left and right positions.

[0014] The lifting support 73 is composed of a longitudinal arm 76 and a transverse arm 77, the upper part of the longitudinal arm 76 is fixed on the seeder beam or the seeder beam connecting seat 1, one end of the transverse arm 77 is fixedly connected with the lower end of the longitudinal arm 76 transversely, and the other end is towards the seeding unit, and the tail end of the cylinder body of the lifting oil cylinder 72 is hinged with one end of the transverse arm 77 towards the seeding unit.

[0015] The lifting support 73 is provided with a cylinder righting device composed of a fixing plate 78 and a righting plate 79. One end of the fixing plate 78 is fixed on the lifting support 73, and the other end is connected with one end of the righting plate 79 through a bolt. The other end of the righting plate 79 connected with the fixing plate 78 is provided with a righting ring 80 which surrounds the outside of the cylinder body of the lifting cylinder 72 and has a gap between the cylinder body. The righting ring 80 enables the cylinder body to swing in a small range when the cylinder rod of the lifting cylinder 72 extends or retracts, and ensures that the jacking fork 74 always cooperates with the lifting beam 71. The righting ring 80 surrounds the outside of the cylinder body of the lifting cylinder 72 at a position away from the tail end of the cylinder body.

[0016] Working principle:

[0017] When the device is used, the seeding machine beam connecting seat 1 is installed on the seeding machine beam, the seeding unit connecting seat 2 is installed on the seeding unit, and the lifting support 73 is installed on the seeding machine beam. The lifting cylinder 72 is connected with the hydraulic system and the hydraulic distributor of the seeding machine through a high-pressure oil pipe.

[0018] When the seeding unit needs to be lifted, the hydraulic distributor is operated to make the cylinder rod of the lifting cylinder 72 extend. The jacking fork 74 at the end of the cylinder rod of the lifting cylinder 72 lifts the lifting beam 71 upward, and the seeding unit is lifted upward by the left upper connecting rod 3, the right upper connecting rod 4, the left lower connecting rod 5, the right lower connecting rod 6 and the seeding unit connecting seat 2, so as to achieve the purpose of lifting the seeding unit without relying on manpower.

[0019] When the lifted seeding unit needs to be lowered, the hydraulic distributor is operated to make the cylinder rod of the lifting cylinder 72 retract. The seeding unit can fall to the ground under the action of gravity along with the retraction of the cylinder rod of the lifting cylinder 72.

[0020] It is simple to operate and convenient to use, greatly improves the speed of converting the seeding unit of the seeding machine, and thus can improve the seeding speed and save the seeding time. In actual use, only the two outermost seeding units of the seeding machine are installed with the seeding unit lifting device, and the use requirement can be met without installing the device on all seeding units.

Claims

1. A seeding unit lifting device, comprising a seeding machine beam connecting seat (1), a seeding unit connecting seat (2), a left upper connecting rod (3), a right upper connecting rod (4), a left lower connecting rod (5) and a right lower connecting rod (6), one end of the left upper connecting rod (3), the right upper connecting rod (4), the left lower connecting rod (5) and the right lower connecting rod (6) are respectively hinged with the seeding machine beam connecting seat (1), and the other end is respectively hinged with the seeding unit connecting seat (2), characterized in that: It also comprises a hydraulic lifting mechanism (7) comprising a lifting crossbeam (71), a lifting oil cylinder (72) and a lifting support (73), the lifting support (73) is installed on the seeder crossbeam or the seeder crossbeam connecting seat (1), the two ends of the lifting crossbeam (71) are fixedly connected with the left lower connecting rod (5) and the right lower connecting rod (6) respectively, and the cylinder body of the lifting oil cylinder (72) is hingedly connected with the lifting support (73), and the end of the cylinder rod is provided with a jacking fork (74) matched with the lifting crossbeam (71). ​ 2. The seeding unit lift device of claim 1, wherein One end of the left upper connecting rod (3), the right upper connecting rod (4), the left lower connecting rod (5) and the right lower connecting rod (6) is hingedly connected with the left upper part, the right upper part, the left lower part and the right lower part of the seeder crossbeam connecting seat (1) respectively, and the other end is hingedly connected with the left upper part, the right upper part, the left lower part and the right lower part of the seeding unit connecting seat (2) respectively.

3. The seeding unit lift device of claim 1, wherein The left lower connecting rod (5) and the right lower connecting rod (6) are provided with a connecting plate (8) fixedly connected with the left lower connecting rod (5) and the right lower connecting rod (6) respectively.

4. The seeding unit lift device of claim 1, wherein The jacking fork (74) is a U-shaped fork opening towards the lifting crossbeam (71).

5. The seeding unit lift device of claim 1, wherein The two ends of the lifting crossbeam (71) are connected with the left lower connecting rod (5) and the right lower connecting rod (6) respectively near the position of the seeder crossbeam connecting seat (1).

6. The seeding unit lift device of claim 1, wherein The left upper connecting rod (3) and the right upper connecting rod (4) are provided with a left and right lower pull rod (9) fixedly connected with the left upper connecting rod (3) and the right upper connecting rod (4) respectively between the positions near the seeding unit connecting seat (2), a plurality of upper ends of the left and right lower pull rod (9) are connected with the lower pull rod (9), and a plurality of lower ends of the left and right lower pull rod (9) are connected with the lifting crossbeam (71), and a plurality of tension springs (10) for pulling down the seeding unit are arranged between the left and right lower pull rod (9) and the lifting crossbeam (71).

7. A seeding unit lifting device as claimed in claim 6, characterized in that The lifting crossbeam (71) and the left and right lower pull rod (9) are provided with a plurality of tension spring grooves (75) and (91) matched with the tension spring (10) respectively.

8. The seeding unit lift device of claim 1, wherein The lifting support (73) is composed of a longitudinal arm (76) and a transverse arm (77), the upper part of the longitudinal arm (76) is fixed on the seeder crossbeam or the seeder crossbeam connecting seat (1), one end of the transverse arm (77) is fixedly connected with the lower end of the longitudinal arm (76) transversely, and the other end is directed towards the seeding unit, and the tail end of the cylinder body of the lifting oil cylinder (72) is hingedly connected with the end of the transverse arm (77) directed towards the seeding unit.

9. The seeding unit lift device of claim 1, wherein The lifting support (73) is provided with a cylinder centralizer composed of a fixed plate (78) and a centralizing plate (79), one end of the fixed plate (78) is fixed on the lifting support (73), the other end is connected with one end of the centralizing plate (79) through a bolt, and the other end of the centralizing plate (79) connected with the fixed plate (78) is provided with a centralizing ring (80) surrounding the outside of the cylinder body of the lifting oil cylinder (72) and having a gap between the cylinder body.

10. The seeding unit lift device of claim 9, wherein The centralizing ring (80) is located at the position of the cylinder body of the lifting oil cylinder (72) away from the tail end and surrounds the outside of the cylinder body of the lifting oil cylinder (72).

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