Agricultural seeder

Abstract

An agricultural seeder relates to the technical field of agricultural machinery, and comprises a frame (1), a traction frame (2), a vibration compression roller (3), a soil covering roller (4) and a finger clamp type seeder (5), the frame (1) comprises two parallel cross beams, the traction frame (2) and the vibration compression roller (3) are arranged on the front cross beam, the soil covering roller (4) and the finger clamp type seeder (5) are arranged on the rear cross beam, and the vibration compression roller (3) is arranged on the rear cross beam. A connecting frame of the vibration compression roller (3) and a connecting frame of the soil covering roller (4) are respectively connected with the cross beam through a spring anti-vibration device (6), and a connecting frame of the finger clamping type seeder (5) is connected with the cross beam through a four-connecting-rod pressure adjusting device (7). The agricultural seeding machine has the advantages of reasonable structural design, small size, light weight, portability, flexibility and high adaptability, and can be suitable for seeding operation in farmland environments with various landforms.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically to an agricultural seeder with contour-following function that can adapt to various complex terrains. Background Technology

[0002] With the continuous development of agricultural machinery technology, seeders with various functions and uses are constantly being developed and applied in agricultural production. The "Multi-functional Mountain Precision Seeder" (publication number CN201388374Y) presents a technical solution for a seeder capable of operating in complex terrain. Its actuators utilize contour-following vibration damping devices on their connecting frames, providing excellent terrain adaptability. However, because its seeding mechanism is driven by ground wheels and other transmission devices, it suffers from complex structure, large size, and weight. This not only consumes a lot of power but also makes traction and operation less flexible and convenient. The complex structure and numerous parts also bring many inconveniences to maintenance and upkeep. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an agricultural seeder with a simple structure, small size, and the ability to adapt to various complex terrains.

[0004] The technical solution of this utility model is: an agricultural seeder, including a frame, a traction frame, a vibrating roller, a covering roller, and a finger-clamp seeder. The frame includes two parallel crossbeams. The traction frame and the vibrating roller are mounted on the front crossbeam, and the covering roller and the finger-clamp seeder are mounted on the rear crossbeam. The connecting frames of the vibrating roller and the covering roller are respectively connected to the crossbeams through spring vibration damping devices. The connecting frame of the finger-clamp seeder is connected to the crossbeams through a four-bar pressure adjustment device. The four-bar pressure adjustment device includes a support mounted on the crossbeam and a connection to the finger-clamp seeder. The frame consists of a vertical rod connecting the support, a longitudinal rod connecting the support and the vertical rod, a stop plate, a handle, and a tension spring. The two vertical rods are arranged in parallel and fixed to the connecting frame of the finger-clamp seeder. Each vertical rod is connected to the support through two longitudinal rods, forming two parallel four-bar linkages. The stop plate is fixed between the two upper longitudinal rods. The stop plate has a socket with several symmetrical insertion positions on the left and right sides. The handle has shoulders on both sides that mate with the sockets of the stop plate. The handle is inserted into a pair of insertion positions in the sockets of the stop plate. The lower end of the tension spring is fixed, and the upper end is connected to the handle.

[0005] The technical advantages of this invention are: it has a reasonable structural design, small size, light weight, portability, flexibility, and strong adaptability, making it suitable for sowing operations in various farmland environments with diverse terrains. The traction frame has a lateral movement function, allowing for real-time adjustment of the lateral sowing position by moving left and right. Both the vibrating roller and the soil-covering roller supports are equipped with contour-following vibration damping devices to adapt to various terrains. The finger-clamp seeder support is equipped with a four-bar pressure adjustment device for convenient adjustment of the sowing depth. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the structure of this utility model;

[0007] Figure 2 This is a schematic diagram of the four-bar pressure adjustment device of this utility model;

[0008] Figure 3 This is a schematic diagram of the spring vibration damping device of this utility model. Detailed Implementation

[0009] like Figure 1 , 2 As shown in Figure 3, an agricultural seeder includes a frame 1, a traction frame 2, a vibrating roller 3, a covering roller 4, and a finger-clamp seeder 5. The frame 1 includes two parallel crossbeams. The traction frame 2 and the vibrating roller 3 are mounted on the front crossbeam, and the covering roller 4 and the finger-clamp seeder 5 are mounted on the rear crossbeam. The connecting frames of the vibrating roller 3 and the covering roller 4 are respectively connected to the crossbeams via spring vibration damping devices 6. The connecting frame of the finger-clamp seeder 5 is connected to the crossbeams via a four-bar pressure adjustment device 7. The four-bar pressure adjustment device 7 includes a support 8 mounted on the crossbeam, a vertical rod 9 connected to the connecting frame of the finger-clamp seeder 5, and a longitudinal bar connecting the support 8 and the vertical rod 9. The device consists of a rod 10, a stop plate 11, a handle 12, and a tension spring 13. Two vertical rods 9 are arranged in parallel and fixed to the connecting frame of the finger-clamp seeder 5. Each vertical rod 9 is connected to the support 8 through two longitudinal rods 10, forming two parallel four-bar linkages. The stop plate 11 is fixed between the two upper longitudinal rods 10. The stop plate 11 has a socket with several symmetrical insertion positions on the left and right sides. The handle 12 has shoulders on both sides that mate with the sockets of the stop plate 11. The handle 12 is inserted into a pair of insertion positions in the sockets of the stop plate 11. The lower end of the tension spring 13 is fixed (to the support or the lower hinge shaft connected to the support), and the upper end is connected to the handle 12. By inserting the handle into the sockets at different positions, the spring is stretched to different lengths. The pressure of the finger-clamp seeder on the ground can be adjusted by the different tensions of the spring, thereby controlling the planting depth.

[0010] The spring vibration damping device 6 includes a vibration damping frame 14, a spring 15, and a slide rod 16. The vibration damping frame 14 is fixed on the crossbeam. The slide rod 16 has hinges at both ends. One hinge is fixed on the slide rod 16 and hinged to the connecting frame of the vibration roller 3 or the soil covering roller 4. The other hinge is sleeved on the slide rod 16 and hinged to the vibration damping frame 14. The slide rod 16 is provided with a nut 17 to prevent the slide rod 16 from falling off.

[0011] The traction frame 2 is connected to the crossbeam via a sliding sleeve 18. A lateral hydraulic cylinder 19 is also provided between the traction frame 2 and the crossbeam, allowing the traction frame 2 to move left and right along the crossbeam. A short beam is fixed on the sliding sleeve, one end of the hydraulic cylinder is hinged to the short beam, and the other end is connected to the crossbeam.

[0012] The finger-clamp seeder 5 has insert teeth 21 between the seeding nozzles 20. When the spacing between the finger-clamp seeding nozzles is large, the insert teeth can serve as a power connection, allowing the turntable of the finger-clamp seeder to obtain a uniform power source.

[0013] The outer circumference of the vibratory roller 3 is evenly distributed with several corrugated annular grooves. After the corrugated annular grooves are pressed over the field, they will form wavy indentations on the ground surface, making the surface more compacted.

[0014] The outer circumference of the soil covering roller 4 is evenly distributed with several corrugated annular grooves.

Claims

1. An agricultural seeding machine comprising a frame (1), a draw bar (2), a vibrating roller (3), a cover roller (4) and a finger clamp seeder (5), characterized in that, The frame (1) comprises two parallel beams, a traction frame (2) and a vibration roller (3) are arranged on the front beam, a covering roller (4) and a finger clamp seeder (5) are arranged on the rear beam, the connecting frame of the vibration roller (3) and the covering roller (4) is connected with the beam through a spring vibration avoidance device (6), the connecting frame of the finger clamp seeder (5) is connected with the beam through a four-bar linkage pressure adjustment device (7), the four-bar linkage pressure adjustment device (7) comprises a support (8) arranged on the beam, a vertical rod (9) connected with the connecting frame of the finger clamp seeder (5), a longitudinal rod (10) connected between the support (8) and the vertical rod (9), a gear plate (11), a handle (12) and a tension spring (13), two vertical rods (9) are arranged in parallel and are fixed with the connecting frame of the finger clamp seeder (5) respectively, each vertical rod (9) is connected with the support (8) through two longitudinal rods (10) respectively, forming two parallel four-bar linkage mechanisms, the gear plate (11) is fixed between the two upper longitudinal rods (10), the gear plate (11) is provided with a socket and a plurality of insertion sites are symmetrically arranged left and right at the socket, the handle (12) is provided with a clamping shoulder matched with the socket of the gear plate (11) on both sides, the handle (12) is inserted on a pair of insertion sites in the socket of the gear plate (11), and the lower end of the tension spring (13) is fixed and the upper end is connected with the handle (12).

2. The agricultural planter of claim 1, wherein, The spring vibration avoidance device (6) comprises a vibration avoidance frame (14), a spring (15) and a sliding rod (16), the vibration avoidance frame (14) is fixed on the beam, the sliding rod (16) is provided with a hinge at both ends, one hinge is fixed on the sliding rod (16) and is hinged with the connecting frame of the vibration roller (3) or the covering roller (4), the other hinge is sleeved on the sliding rod (16) and is hinged with the vibration avoidance frame (14), and the sliding rod (16) is provided with a nut (17) for preventing the sliding rod (16) from falling.

3. The agricultural planter of claim 1, wherein, The traction frame (2) is connected with the beam through a sliding sleeve (18), and a transverse hydraulic cylinder (19) is further arranged between the traction frame (2) and the beam, so that the traction frame (2) can move left and right along the beam.

4. The agricultural planter of claim 1, wherein, The insertion teeth (21) are arranged between the insertion nozzles (20) of the finger clamp seeder (5).

5. The agricultural planter of claim 1, wherein, The vibration roller (3) is uniformly provided with a plurality of corrugated annular grooves on the outer periphery.

6. The agricultural planter of any one of claims 1 to 5, wherein, The covering roller (4) is uniformly provided with a plurality of corrugated annular grooves on the outer periphery.

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