Folding type seeder rack with adjustable planting spacing

Abstract

The utility model belongs to the technical field of agricultural machinery, and particularly relates to a foldable seeder rack with adjustable planting spacing. Comprising a rack body, a distance adjusting mechanism, a support folding mechanism, traction rods and a furrow opener, the rack body and the distance adjusting mechanism are connected through the left traction rod and the right traction rod and a lead screw, and the furrow opener is hinged to the rack body. The distance adjusting mechanism can drive a lead screw to rotate by controlling a motor, the lead screw rotates to control the front-back moving distance of a distance adjusting plate, the distance adjusting plate is matched with a traction rod to enable two wings of the machine frame body to swing by a certain angle, and therefore the distance between the adjacent furrow openers is controlled, and meanwhile the working orientation of the furrow openers is kept unchanged. And the seeding machine can meet various planting spacing requirements of different crops. The rack folding mechanism is installed behind the rack body, when the rack needs to be folded or unfolded, a worker can use an auxiliary handle on a U-shaped plate to rotate the U-shaped plate on the outer side, the occupied space can be reduced when the rack is folded, and the transportation requirement is better met.

Description

Technical Field

[0001] The utility model relates to the technical field of seeders, and particularly relates to a folding seeder frame with adjustable planting spacing. Background Art

[0002] Sowing is the starting link in the agricultural planting process and also an important link in the crop production process. When the existing sowing agricultural machines are sowing, the distance between two adjacent furrow openers on them is fixed and cannot be adjusted, which results in the inability to sow some ridges with different spacings, and the applicability is poor. When the seeder is in use, it is necessary to replace the seeder with different spacings for sowing, resulting in too high sowing costs. Therefore, the improvement and innovation of seeders are important topics in the current agricultural development. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a folding seeder frame with adjustable planting spacing. By controlling the rotation of the motor, the adjustable sowing spacing is realized, the adaptability is strong, the adjustment process is simple and fast, and it is convenient to promote.

[0004] In order to achieve the above-mentioned utility model purpose, the technical scheme adopted by the utility model is as follows:

[0005] 1. A foldable seeder frame with adjustable planting spacing, characterized in that it includes a frame main body, a spacing adjustment mechanism, a bracket folding mechanism, a towing bar, and a furrow opener. The frame main body includes a spacing adjustment plate, a U-shaped plate, and a connecting plate. A plurality of cross beams composed of several U-shaped plates are symmetrically distributed on both sides of the spacing adjustment plate. The U-shaped plates on the same side are parallel to each other. The plurality of cross beams are respectively hinged to the spacing adjustment plate at corresponding positions. The spacing adjustment mechanism is threadedly connected to the spacing adjustment plate. The rotation of the lead screw can control the forward and backward movement of the spacing adjustment plate, thereby controlling the swing angle of the two wings of the frame main body. The inner and outer U-shaped plates are bolted together. The unfolding or folding of the frame main body requires loosening the bolts and rotating the outer U-shaped plate. The two ends of the cross beams in the middle part are respectively hinged to the connecting plate. The bracket folding mechanism is fixedly connected to the rear of the frame main body. The two ends of the towing bar are respectively hinged to the spacing adjustment mechanism and the frame main body. The furrow opener is hinged to the frame main body. The spacing adjustment plate is divided into an upper plate and a lower plate. A ball screw nut pair is installed at the front end of the upper plate and is threadedly connected to the lead screw for controlling the forward and backward movement of the spacing adjustment plate. A sliding bearing is installed at the rear end for support. The lower plate plays a protective role. The spacing adjustment plate is provided with 4 hinge points arranged in a straight line. Each hinge point has two cross beams hinged together. The cross beams can freely swing through the hinge structure. The parallelism of the U-shaped plates on the same side ensures that when the spacing of the furrow openers changes, the working direction of the furrow openers remains unchanged while the spacing between adjacent furrow openers changes uniformly. The cross beams hinged at the first two and the last two hinge points form two working rows. The two ends of the connecting plate are hinged to the front and rear working rows to ensure that the swing angles of the front and rear working rows are the same. A number of furrow openers are hinged between the cross beams of each working row. The frame main body can be converted between the transportation state and the working state by folding and unfolding the outer U-shaped plate. A number of furrow openers are hinged to the two working rows and are arranged in an S shape, leaving sufficient space between adjacent furrow openers to avoid interference during work.

[0006] In some embodiments, the spacing adjustment mechanism includes a towing frame, a motor, a coupling, a bearing seat, and a lead screw. The motor is fixedly connected to the towing frame. The bearing seat is fixedly connected to the towing frame. One end of the lead screw passes through the bearing seat and is connected to the output shaft of the motor through a coupling. The other end is threadedly connected to the front end of the spacing adjustment plate and is slidably connected to the rear end. When it is necessary to adjust the spacing of the furrow openers, the motor is started to rotate the lead screw. The rotation of the lead screw drives the spacing adjustment plate to move forward and backward through the ball screw nut pair. The moving range of the spacing adjustment plate is from 0 cm to 60 cm. In cooperation with the towing bar, the two wings of the frame main body can obtain a larger swing range from 0° to 40° with a smaller moving range of the spacing adjustment plate, thereby controlling the spacing of the furrow openers to vary within the range of 15 cm to 20 cm.

[0007] In some embodiments, the bracket folding mechanism includes an auxiliary handle, a support plate, a fixed platform, and a placement nut. The support plate is rotatably connected to the fixed platform, and the support plate can rotate freely around the fixed platform. The auxiliary handle is fixedly connected to the outer U-shaped plate at the rear of the frame body. The fixed platform is fixedly connected to the inner U-shaped plate at the rear of the frame body. The placement nut is located between the two U-shaped plates on the same side at the rear of the frame body. The placement nut is used to place the support plate when the frame body is in the working state. The auxiliary handle, the support plate, the fixed platform, and the placement nut are symmetrically distributed on both sides of the adjustment plate. In addition to assisting in folding and unfolding the frame body, the auxiliary handle also functions to support and limit the outer U-shaped plate of the frame body by clamping the hook-shaped front end of the support plate in the folded state. An additional placement nut is installed at the connection of the inner and outer U-shaped plates at the rear of the frame body compared to other similar positions. The placement nut can provide space for placing the support plate when the frame body is in the unfolded state. When the frame needs to be unfolded, loosen the connecting bolts of the inner and outer U-shaped plates, rotate the outer U-shaped plate downward until it is parallel to the ground, and then tighten the bolts. Rotate the support plate and place its front end on the placement nut to complete the storage of the bracket folding mechanism and the unfolding of the frame. When the frame needs to be folded, the positions of the cross beams need to be adjusted to the horizontal. Loosen the bolts and rotate the outer U-shaped plate upward. Rotate the support plate so that the auxiliary handle on the outer U-shaped plate clamps on the support plate, and then tighten the bolts to complete the folding of the frame.

[0008] The beneficial effects of the present utility model are as follows: (1) For the adjustable planting-spacing foldable seeding machine frame of the present utility model, when the equipment needs to adjust the spacing between the furrow openers, start the motor to drive the lead screw to rotate. The rotation of the lead screw drives the spacing adjustment plate to move back and forth through the ball screw nut pair, so as to cooperate with the towing rod to make the two wings of the frame body swing at a certain angle, realizing the function of changing the spacing between adjacent furrow openers, and at the same time ensuring that the working direction of the furrow opener remains fixed, thereby enabling the seeding machine to adapt to various planting spacings of different crops; (2) There is a hinge structure between the inner and outer U-shaped plates, enabling the frame body to be converted between the transportation state and the working state by folding and unfolding the frame. The working structure of this equipment is simple, the manufacturing cost is low, and it has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of the adjustable planting-spacing foldable seeding machine frame of the present utility model;

[0010] Figure 2 It is a schematic diagram of the spacing adjustment mechanism in the invention of the present utility model;

[0011] Figure 3 It is a schematic diagram of the variable-spacing adjustment principle in the invention of the present utility model;

[0012] Figure 4Schematic diagram of the bracket folding mechanism in the invention of the utility model

[0013] In the figure: 1. Main frame body; 11. Spacing adjustment plate; 12. U-shaped plate; 13. Connecting plate; 2. Spacing adjustment mechanism; 21. Traction frame; 22. Motor; 23. Coupling; 24. Bearing seat; 25. Lead screw; 3. Bracket folding mechanism; 31. Auxiliary handle; 32. Support plate; 33. Fixed table; 34. Mounting nut; 4. Traction rod; 5. Furrow opener Specific implementation mode

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model

[0015] Please refer to Figures 1-4 , a planting-spacing adjustable folding seeding machine frame provided by the present utility model

[0016] As Figure 1As shown in the figure, a folding seeding machine frame with adjustable planting spacing mainly includes a frame body (1), a spacing adjustment mechanism (2), a bracket folding mechanism (3), a towing bar (4), and a furrow opener (5). The frame body (1) is mainly composed of a spacing adjustment plate (11), several U-shaped plates (12), and two connecting plates (13). Two U-shaped plates (12) are connected by bolts to form a cross beam. There are a total of 4 pairs of cross beams in the frame body (1), and each pair of cross beams is symmetrically distributed on both sides of the spacing adjustment plate (11). The spacing adjustment plate (11) is composed of an upper plate and a lower plate, and is provided with 4 co-linearly arranged hinge points. Each pair of cross beams is installed between the upper and lower plates of the spacing adjustment plate (11) and is hinged to the corresponding hinge points through a pin shaft. The cross beam can swing freely through the hinge structure. The U-shaped plates (12) on the same side are parallel to each other to ensure that when the spacing of the furrow openers (5) changes, the spacing distance between adjacent furrow openers (5) can change uniformly while not changing the working direction of the furrow openers (5). The cross beams hinged to the first two and the last two hinge points form two working rows. The two ends of the connecting plate (13) are perforated and are connected to the vertical shafts at both ends of the cross beams in the middle two rows to form a rotating pair to connect the front and rear working rows. The function is to ensure that the swing angles of the front and rear two working rows are the same. The side plates of each U-shaped plate (12) are perforated, and the front and rear U-shaped plates (12) of each working row are installed with their openings facing each other. The two ends of the cross plate for installing the furrow opener (5) are respectively inserted between the perforated side plates of the front and rear U-shaped plates (12) and are hinged and connected through the through holes of the side plates of the U-shaped plates (12) by installing a pin shaft. The positions of the furrow openers (5) are arranged in an S shape, leaving sufficient space between adjacent furrow openers (5) to avoid interference with each other during work. The outer U-shaped plates (12) are connected to the inner U-shaped plates (12) through a pin shaft hinge, and the outer U-shaped plates (12) can rotate freely by loosening the bolts. The frame body (1) can realize the functions of folding and unfolding the frame body (1) by rotating the outer U-shaped plates (12), enabling the frame body (1) to be converted between the transportation state and the working state, and improving the agricultural work efficiency.

[0017] As Figure 2 , Figure 3As shown in the figure, the spacing adjustment mechanism (2) mainly includes a traction frame (21), a motor (22), a coupling (23), a bearing seat (24), and a lead screw (25). A traction device is installed at the front end of the traction frame (21). The motor (22) is the power source for changing the spacing and is located at the middle position of the traction frame (21) and is fixedly connected to the traction frame (21) by bolts. The bearing seat (24) is located at the middle position of the rear boss of the traction frame (21) and is fixedly connected to the traction frame (21) by bolts. The front part of the lead screw (25) has a shaft shoulder, the middle part has a thread, and the rear part is a smooth rod. One end of the lead screw (25) passes through the bearing seat (24) and is connected to the output shaft of the motor (22) through the coupling (23). The other end is threadedly connected to the ball screw nut pair at the front end of the spacing adjustment plate (11) and is assembled with the sliding bearing at the rear end. The sliding bearing plays a role in protection and support. When it is necessary to adjust the spacing, the motor (22) is powered on. The motor (22) drives the lead screw (25) to rotate. The rotation of the lead screw (25) drives the spacing adjustment plate (11) to move back and forth through the ball screw nut pair. The spacing adjustment plate (11) moves on the thread of the lead screw (25), and the range is from 0 cm to 60 cm. In cooperation with the traction rod (4), the two wings of the frame body (1) can obtain a larger swing range from 0° to 40° under the condition that the spacing adjustment plate (11) has a smaller movement range, so as to control the spacing of the furrow opener (5) to vary between 15 cm and 20 cm to meet the planting spacing requirements of different crops. Figure 3 Part A on the left in the figure is a schematic diagram of the minimum limit position of the furrow opener spacing. Figure 3 Part B on the right in the figure is a schematic diagram of the maximum limit position of the furrow opener spacing.

[0018] As Figure 4 shown, it is a planting spacing adjustable folding seeding machine frame. The bracket folding mechanism (3) includes an auxiliary handle (31), a support plate (32), a fixed platform (33), and a mounting nut (34). The fixed platform (33) is integrally cylindrical with a limit baffle on the outside and is welded to the inner U-shaped plate (12) at the rear of the frame body (1). The tail of the support plate (32) has a hole and is rotatably connected to the fixed platform (33). The support plate (32) can freely rotate around the fixed platform (33). The auxiliary handle (31) is welded to the outer U-shaped plate (12) at the rear of the frame body (1). In addition to assisting in folding and unfolding the frame body (1), when in the folded state, the auxiliary handle (31) is stuck in the hook-shaped head of the support plate (32) and has the functions of supporting and restricting the outer U-shaped plate (12) of the frame body (1). The mounting nut (34) is a standard part used to connect the inner and outer U-shaped plates (12) on the same side at the rear of the frame body (1) and can provide space for placing the support plate (32) when the frame body (1) is in the unfolded state. The auxiliary handle (31), the support plate (32), the fixed platform (33), and the mounting nut (34) are symmetrically distributed on both sides of the spacing adjustment plate (11).

[0019] The basic principle, main features and advantages of the present utility model have been shown and described above. The terms "front", "rear", "left", "right", "upper" and "lower" used in the text are not specified specifically, mainly for more intuitively illustrating the technical solution and do not serve as a limitation. Those skilled in the art should understand that the above embodiments are only for explaining the technical concept and features of the present utility model, and the purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it, and it cannot be used to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit and essence of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A foldable seeder frame with adjustable planting spacing, characterized in that: The invention comprises a frame body (1), a spacing adjustment mechanism (2), a bracket folding mechanism (3), a traction rod (4), and a furrow opener (5). The frame body (1) comprises a spacing adjustment plate (11), a U-shaped plate (12), and a connecting plate (13). The plurality of cross beams composed of a plurality of U-shaped plates (12) are symmetrically distributed on both sides of the spacing adjustment plate (11). The U-shaped plates (12) on the same side are parallel to each other. The plurality of cross beams are respectively hinged to the spacing adjustment plate (11) at corresponding positions. The spacing adjustment mechanism (2) is threadedly connected to the spacing adjustment plate (11). The lead screw (25) can be rotated to adjust the spacing adjustment plate (11). The forward and backward movement of the spacing adjustment plate (11) is controlled to control the swing angle of the two wings of the frame body (1). The U-shaped plates (12) on the inner and outer sides are connected by bolts. The frame body (1) can be unfolded or folded by loosening the bolts and rotating the outer U-shaped plate (12). The two ends of the two cross beams in the middle are respectively connected to the connecting plate (13) by hinge connection. The bracket folding mechanism (3) is fixedly connected to the rear of the frame body (1). The two ends of the traction rod (4) are respectively hinged to the spacing adjustment mechanism (2) and the frame body (1). The furrow opener (5) is hinged to the frame body (1).

2. A foldable seeder frame with adjustable planting spacing according to claim 1, characterized in that: The spacing adjustment mechanism (2) comprises a traction frame (21), a motor (22), a coupling (23), a bearing seat (24) and a lead screw (25); the motor (22) is fixedly connected to the traction frame (21); the bearing seat (24) is fixedly connected to the traction frame (21); one end of the lead screw (25) passes through the bearing seat (24) and is connected to the output shaft of the motor (22) through the coupling (23); the other end is connected to the front end of the spacing adjustment plate (11) through a thread and the rear end is slidably connected.

3. The foldable seeder frame with adjustable planting spacing according to claim 1 is characterized in that: The support folding mechanism (3) comprises an auxiliary handle (31), a support plate (32), a fixing platform (33), and a placement nut (34); the support plate (32) is rotatably connected to the fixing platform (33); the support plate (32) can freely rotate around the fixing platform (33); the auxiliary handle (31) is fixedly connected to the outer U-shaped plate (12) at the rear of the frame body (1); the fixing platform (33) is fixedly connected to the inner U-shaped plate (12) at the rear of the frame body (1); the placement nut (34) is located between two U-shaped plates (12) at the same side of the rear of the frame body (1); and the auxiliary handle (31), the support plate (32), the fixing platform (33), and the placement nut (34) are symmetrically distributed on both sides of the spacing adjustment plate (11).

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