Seeding depth adjusting structure
Through the synchronous rotation and adjustment device of the seeding arm, the problem of inconsistent seeding depth in the seeding machine is solved, unified control and depth consistency of the seeding disk are achieved, and sowing efficiency and crop yield are improved.
Patent Information
- Application Number
- CN202421115702.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The existing seeders have inconsistent seeding depth due to the independent vertical shift mechanism of each row of seeding plates, resulting in uneven seeding depth, affecting crop yield.
The seeding arm synchronous rotation adjustment device is adopted, and the seeding arm is driven to synchronously vertically by a fixed cross beam frame arranged horizontally and a rotary adjustable rotary rod, and the linkage rod assembly and adjustment screw are used to achieve unified control of multiple rows of seeding discs.
The adjustment of the structure is simplified, the cost is reduced, the depth consistency of the sowing disc is achieved, the seeds are sown at the same depth are improved, and the efficiency of sowing operations and crop yields are improved.
Smart Images
Figure CN222340005U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sowing devices, in particular to a sowing depth adjustment structure. Background Art
[0002] A seeder is a planting machine that sows crop seeds. During sowing, the amount of planting materials discharged per unit time is stable, the planting materials are evenly distributed per unit area, unit length or per hole, the plant spacing, row spacing, hole spacing and planting depth of the planting materials in the field or plot are basically consistent, the planting materials are less damaged during the planting process and the survival rate is high.
[0003] In order to increase the sowing coverage area, multiple rows of staggered sowing trays are often set on the sowing machine. During the sowing operation, the sowing tray needs to be lifted and lowered vertically to adjust its own height position to ensure that the seeds can enter the seed furrow, that is, to adjust the depth distance of the sowing tray entering the seed furrow to ensure consistent planting depth and make the seeds germinate evenly. Since the positions of each row of sowing trays have front and rear deviations, multiple sets of vertical shift mechanisms are usually set on the existing sowing machine to control the vertical lifting and lowering of each row of sowing trays. However, each row of sowing trays has an independent vertical shift mechanism, which will cause distance deviation when lifting itself. For example, when one row of sowing trays opens a seed furrow of a certain depth, the other row of sowing trays is still on the surface, resulting in inconsistent sowing depths and even drying of seeds, resulting in seedlings and broken ridges, which affects the increase of crop yields. The front and rear sowing beams (rods) of traditional sowing machines are mostly rigidly connected to the frame and cannot be adjusted individually; some models have multiple sets of vertical shift mechanisms to adjust the entire row of sowing units, which are cumbersome to adjust and cannot achieve sowing operations at the same depth for all sowing trays. Utility Model Content
[0004] The utility model aims to provide a sowing depth adjustment structure, which can control the sowing discs at different rows on the seeder to perform synchronous vertical lifting through the synchronous rotation adjustment device of the sowing arm, thus solving the problems in the prior art.
[0005] The utility model solves the technical problem by adopting the following technical scheme: a sowing depth adjustment structure comprises a horizontally arranged fixed crossbeam frame, a first rotating rod and a second rotating rod which can be rotatably adjusted are installed on the fixed crossbeam frame, a plurality of first sowing arms are installed in the length direction of the first rotating rod, the first sowing arms can rotate synchronously with the first rotating rod, a first sowing disc is installed at the bottom of the first sowing arm, a plurality of second sowing arms are installed in the length direction of the second rotating rod, the second sowing arms can rotate synchronously with the second rotating rod, a second sowing disc is installed at the bottom of the second sowing arm, the first sowing arm and the second sowing arm are arranged in a staggered manner, and a sowing arm synchronous rotation adjustment device is also installed on the fixed crossbeam frame The synchronous rotation adjustment device of the sowing arm includes a first swing plate fixed on the first rotating rod, a second swing plate fixedly arranged on the second rotating rod, a linkage rod assembly is hingedly installed between the first swing plate and the second swing plate, and when the first rotating rod rotates, the second rotating rod can be driven to rotate synchronously through the transmission of the first swing plate, the linkage rod assembly and the second swing plate. The fixed cross beam frame is also provided with vertical plates arranged side by side, and an adjustment screw that can swing circumferentially and rotate axially is installed between the vertical plates. An adjustment screw sleeve that matches the adjustment screw is hingedly installed on the first swing plate, and rotating the adjustment screw can drive the first swing plate to rotate, thereby synchronously adjusting the distance between the first sowing plate and the second sowing plate and the fixed cross beam frame. The linkage rod assembly includes a first stud hinged on the first swing plate, a second stud is hingedly installed on the second swing plate, and the threads on the first stud and the second stud are opposite in rotation direction. A spacing screw sleeve is installed between the first stud and the second stud, and rotating the spacing screw sleeve can adjust the initial relative position between the first sowing arm and the second sowing arm. A guide sleeve is installed between the vertical plates, and half shafts are provided on both sides of the guide sleeve. A through hole matching with the half shaft is opened on the vertical plate, and a slot is provided on the outer periphery of the half shaft passing through the through hole, and a retaining spring is installed in the slot. The guide sleeve can swing relative to the vertical plate, and a bearing is also installed in the guide sleeve. The non-threaded position of the adjustment screw is installed in the bearing, and two limit grooves are also provided on the adjustment screw. Limit rings are installed in each limit groove. The two limit rings are respectively located at the front and rear ends of the guide sleeve to realize the axial limit of the adjustment screw in the guide sleeve. When the adjustment screw rotates axially relative to the guide sleeve, it can move in and out of the adjustment screw sleeve and drive the first swing plate to rotate. The ends of the first rotating rod and the second rotating rod are circular plates, and square steel is provided between the circular plates. Rubber sleeves matching with the square steel are provided at the ends of the first sowing arm and the second sowing arm. A limit plate is installed on the end of the second sowing arm. When the limit plate rotates to contact with the fixed crossbeam frame, the distance between the first sowing disc and the second sowing disc and the fixed crossbeam frame will not increase. The limit plate is installed with a limit adjustment mechanism, which includes an eccentric wheel arranged on one side of the limit plate, a spline shaft is installed on one end of the eccentric wheel's rotating shaft passing through the limit plate, a detachable anti-rotation plate is installed on the side of the limit plate by bolts, a spline groove matching the spline shaft is opened on the anti-rotation plate, and the anti-rotation plate installed on the spline shaft and the limit plate can limit the rotation of the eccentric wheel.
[0006] The positive effect of the utility model is that a sowing depth adjustment structure described in the utility model is provided with two rows of rotating rods on a fixed crossbeam frame, and sowing discs are installed on each row of rotating rods through a sowing arm. When the rotating rods rotate, the sowing discs can be driven to swing and lift. A sowing arm synchronous rotation adjustment device is also installed on the fixed crossbeam frame, which can drive the rotating rods and the corresponding sowing arms and sowing discs to rotate and lift synchronously. The synchronous vertical lifting of each row of sowing discs on the seeder can be controlled by rotating an adjusting screw. Compared with the traditional seeder with multiple groups of vertical movement mechanisms, it not only simplifies the adjustment structure and reduces the cost, but also realizes unified control of multiple rows of sowing discs, greatly reduces the vertical lifting difference of the sowing discs during the sowing operation, ensures that the sowing disc puts the seeds into the same depth position of the seed furrow, and realizes consistent sowing operation depth. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a structural schematic diagram of the utility model;
[0008] Figure 2 It is a structural schematic diagram of a synchronous rotation adjustment device for a sowing arm;
[0009] Figure 3 It is a schematic diagram of the structure in which the adjusting screw is arranged between the vertical plates through the guide sleeve;
[0010] Figure 4 is a half-section view of an adjusting screw arranged between vertical plates through a guide sleeve;
[0011] Figure 5 is a schematic diagram of the structure of the second seeding arm;
[0012] Figure 6 It is a structural schematic diagram of a limit adjustment mechanism provided on a limit plate;
[0013] Figure 7 yes Figure 6 A top view of the structure in the middle;
[0014] Figure 8 yes Figure 6 Rear view of the middle structure;
[0015] Fig. 9 It is a schematic diagram of the state after the eccentric wheel is adjusted to exceed the height of the limit plate. DETAILED DESCRIPTION
[0016] The utility model discloses a sowing depth adjustment structure, such as Figure 1 and Figure 2As shown, it includes a horizontally arranged fixed beam frame 1, on which a first rotating rod 2 and a second rotating rod 3 that can be rotatably adjusted are installed. The first rotating rod 2 and the second rotating rod 3 are arranged one after the other on the fixed beam frame 1, and can respectively drive different rows of seeding plates to rotate and rise and fall, thereby changing the seeding depth.
[0017] A plurality of first sowing arms 4 are installed along the length direction of the first rotating rod 2. The first sowing arms 4 can rotate synchronously with the first rotating rod 2. A first sowing plate 5 is installed at the bottom of the first sowing arm 4. The rotation of the first rotating rod 2 can drive the first sowing plate 5 to rise and fall vertically. A plurality of second sowing arms 6 are installed along the length direction of the second rotating rod 3. The second sowing arms 6 can rotate synchronously with the second rotating rod 3. A second sowing plate 7 is installed at the bottom of the second sowing arm 6. The rotation of the second rotating rod 3 can drive the second sowing plate 7 to rise and fall vertically. In order not to affect the sowing operations between each other, the first sowing arms 4 and the second sowing arms 6 are arranged in an interlaced manner, and the first sowing plates 5 and the second sowing plates 7 are also arranged in an interlaced manner accordingly.
[0018] In order to achieve the synchronous vertical lifting and lowering adjustment of the first seeding disc 5 and the second seeding disc 7, a seeding arm synchronous rotation adjustment device is also installed on the fixed crossbeam frame 1, and the seeding arm synchronous rotation adjustment device includes a first swing plate 8 fixed on the first rotating rod 2, and a second swing plate 9 is fixedly arranged on the second rotating rod 3. A linkage rod assembly is hingedly installed between the first swing plate 8 and the second swing plate 9, and the linkage rod assembly can be a connecting rod or a connecting rod that plays a connecting role, and the two ends are respectively hingedly installed on the first swing plate 8 and the second swing plate 9. In this way, the two ends of the first rotating rod 2, the second rotating rod 3, and the linkage rod are respectively used as hinge points, and the fixed crossbeam frame 1, the first swing plate 8, the second swing plate 9 and the linkage rod assembly can form a parallelogram mechanism. When the first rotating rod 2 rotates, the second rotating rod 3 can be driven to rotate synchronously through the transmission of the first swing plate 8, the linkage rod assembly and the second swing plate 9, so that the first seeding disc 5 on the first rotating rod 2 and the second seeding disc 7 on the second rotating rod 3 can be lifted and lowered synchronously.
[0019] In order to realize the power input for the synchronous lifting and lowering of the above-mentioned seeding plates, the fixed crossbeam frame 1 is also provided with vertical plates 10 arranged side by side, and an adjusting screw 11 that can swing circumferentially and rotate axially is installed between the vertical plates 10. An adjusting screw sleeve 12 that cooperates with the adjusting screw 11 is hingedly installed on the first swinging plate 8. Since the vertical plate 10 is fixed relative to the fixed crossbeam frame 1, when the adjusting screw 11 is rotated, the adjusting screw 11 can be allowed to enter and exit the adjusting screw sleeve 12, thereby changing the opening and closing angle and distance between the first swinging plate 8 and the vertical plate 10, that is, the first swinging plate 8 drives the first rotating rod 2 to rotate, and the second rotating rod 3 rotates synchronously therewith. By rotating the adjusting screw 11, the distance between the first seeding plate 5 and the second seeding plate 7 and the fixed crossbeam frame 1 can be synchronously adjusted, so that during the sowing operation, all the seeding plates can be synchronously lifted and lowered vertically.
[0020] Furthermore, in order to facilitate the adjustment of the front-to-rear spacing difference between the first seeding plate 5 and the second seeding plate 7, that is, the initial linkage position difference between the first seeding arm 4 and the second seeding arm 6, so as to adapt to the seeding requirements of crops with different spacings, the linkage rod assembly includes a first stud 13 hinged on the first swing plate 8, a second stud 14 hingedly mounted on the second swing plate 9, the threads on the first stud 13 and the second stud 14 are in opposite directions, and a spacing screw sleeve 15 is installed between the first stud 13 and the second stud 14, and the rotation of the spacing screw sleeve 15 can make the first stud 13 and the second stud 14 move closer or farther, thereby adjusting the initial relative position between the first seeding arm 4 and the second seeding arm 6.
[0021] Furthermore, in order to realize the circumferential swing installation of the adjustment screw 11 between the vertical plates 10 and the axial rotation adjustment thereof, as Figure 3 and Figure 4 As shown, a guide sleeve 16 is installed between the vertical plates 10, and a half shaft 17 is provided on both sides of the guide sleeve 16. A through hole matching with the half shaft 17 is opened on the vertical plate 10, and a clamping groove is provided on the outer periphery of the half shaft 17 passing through the through hole, and a clamping spring 18 is installed in the clamping groove, wherein the clamping spring 18 is used to limit the installation of the half shaft 17, and the guide sleeve 16 can rotate and swing relative to the vertical plate 10 around the center of the half shaft 17. Since the vertical plate 10 is fixed relative to the fixed crossbeam frame 1, when the rotating adjustment screw rod 11 drives the first swing plate 8 to rotate, the hinge point position of the adjustment screw rod 11 on the vertical plate 10 will rotate, so as to allow the rotation adjustment of the first rotating rod 2 and the second rotating rod 3 in the subsequent quadrilateral mechanism.
[0022] In order to realize the axial installation limit of the adjusting screw 11 in the guide sleeve 16, a bearing 19 is also installed in the guide sleeve 16. The non-threaded position of the adjusting screw 11 is installed in the bearing 19, and the end thread position of the adjusting screw 11 is located in the adjusting screw sleeve 12. Two limit grooves 22 are also provided on the adjusting screw 11, and a limit ring 23 is installed in each limit groove 22. The two limit rings 23 are respectively located at the front and rear ends of the guide sleeve 16 to realize the axial limit of the adjusting screw 11 in the guide sleeve 16. When the adjusting screw 11 rotates axially relative to the guide sleeve 16, it can move in and out of the adjusting screw sleeve 12, thereby driving the first swing plate 8 to rotate to realize the corresponding adjustment operation.
[0023] Furthermore, in order to facilitate the rotation of the rotating rod while improving its own strength, the ends of the first rotating rod 2 and the second rotating rod 3 are circular plates, and square steel is provided between the circular plates. Rubber sleeves 20 matching the square steel are provided at the ends of the first sowing arm 4 and the second sowing arm 6. The rubber sleeves 20 have a certain elasticity, which can realize the fixed connection between the sowing arm and the rotating rod for synchronous rotation. When the sowing disc is lowered to contact the ground for sowing operations, even if there are stones on the ground, due to the setting of the rubber sleeves 20, the sowing disc will float to a certain extent within the elastic range of the rubber sleeves 20, and will not affect the structural connection between the rotating rod and the sowing arm, thereby ensuring the normal progress of the sowing operation.
[0024] When sowing operations are carried out, the seeding disc is lowered to contact the ground under the action of gravity. Rotating the adjusting screw sleeve 12 can change the depth distance of the seeding disc entering the ridge groove. When sowing operations are not required, the fixed cross beam frame 1 can be lifted upward to keep the seeding disc away from the ground. In order to reduce the torque force of the seeding arm on the rotating rod during non-seeding operations, a limit plate 21 is installed on the end of the second seeding arm 6. When the limit plate 21 is rotated to contact with the fixed cross beam frame 1, the distance between the first seeding disc 5 and the second seeding disc 7 and the fixed cross beam frame 1 will no longer increase, that is, the seeding disc will not drop to the extreme position at the bottom under the action of gravity, but will remain at a certain height, which can not only reduce the pulling force on the adjusting screw 11, but also avoid the seeding disc being in an excessively low position during non-seeding walking and causing bumps, etc., thereby improving the service life of the device to a certain extent.
[0025] Furthermore, in order to adjust the contact limit distance between the limit plate 21 and the fixed crossbeam frame 1 and adjust the distance between the seeding plate and the ground as needed, a limit adjustment mechanism is installed on the limit plate 21, such as Figure 6-8 As shown, the limit adjustment mechanism includes an eccentric wheel 24 arranged on one side of the limit plate 21, and a spline shaft 25 is installed at one end of the rotating shaft of the eccentric wheel 24 passing through the limit plate 21. A detachable anti-rotation plate 26 is installed on the side of the limit plate 21 by bolts, and a spline groove 27 matching the spline shaft 25 is formed on the anti-rotation plate 26. The anti-rotation plate 26 installed on the spline shaft 25 and the limit plate 21 can limit the rotation of the eccentric wheel 24.
[0026] When the eccentric wheel 24 rotates around the rotating shaft, the height position beyond the limit plate 21 is different, that is, the contact limit distance between the limit plate 21 and the fixed crossbeam frame 1 is changed. Due to the cooperation of the spline shaft 25 and the anti-rotation plate 26, when the anti-rotation plate 26 is installed on the limit plate 21, it can form a rotation limit for the spline shaft 25, so that the eccentric wheel 24 is in a relatively static state where it no longer rotates, so as to maintain an unchanged contact limit distance. When it needs to be changed, it is only necessary to remove the anti-rotation plate 26, adjust the eccentric wheel 24 to rotate to the required height position, and then install the anti-rotation plate 26.
[0027] The technical solution of the present invention is not limited to the scope of the embodiments described in the present invention. The technical contents not described in detail in the present invention are all known technologies.
Claims
1. A sowing depth adjustment structure, characterized in that: The invention comprises a horizontally arranged fixed crossbeam frame (1), a first rotating rod (2) and a second rotating rod (3) which can be rotated and adjusted are installed on the fixed crossbeam frame (1), a plurality of first sowing arms (4) are installed in the length direction of the first rotating rod (2), the first sowing arms (4) can rotate synchronously with the first rotating rod (2), a first sowing disk (5) is installed at the bottom of the first sowing arm (4), a plurality of second sowing arms (6) are installed in the length direction of the second rotating rod (3), the second sowing arms (6) can rotate synchronously with the second rotating rod (3), a second sowing disk (7) is installed at the bottom of the second sowing arm (6), the first sowing arm (4) and the second sowing arm (6) are arranged in an interlaced manner, and a sowing arm synchronous rotation adjustment device is also installed on the fixed crossbeam frame (1), the sowing arm synchronous rotation adjustment device comprises a sowing arm (2) fixed to the first rotating rod (2 ), a first swing plate (8) is fixedly arranged on the second rotating rod (3), a linkage rod assembly is hingedly installed between the first swing plate (8) and the second swing plate (9), and when the first rotating rod (2) rotates, the second rotating rod (3) can be driven to rotate synchronously through the transmission of the first swing plate (8), the linkage rod assembly and the second swing plate (9), and the fixed cross beam frame (1) is also provided with vertical plates (10) arranged in parallel, and an adjustment screw (11) capable of circumferential swing and axial rotation is installed between the vertical plates (10), and an adjustment screw sleeve (12) matched with the adjustment screw (11) is hingedly installed on the first swing plate (8), and the rotation of the adjustment screw (11) can drive the first swing plate (8) to rotate, thereby synchronously adjusting the distance between the first seeding plate (5) and the second seeding plate (7) and the fixed cross beam frame (1).
2. A sowing depth adjustment structure according to claim 1, characterized in that: The linkage rod assembly comprises a first stud (13) hinged on a first swing plate (8), a second stud (14) hingedly mounted on a second swing plate (9), the threads on the first stud (13) and the second stud (14) having opposite rotation directions, a spacing screw sleeve (15) being mounted between the first stud (13) and the second stud (14), and the initial relative position between the first sowing arm (4) and the second sowing arm (6) can be adjusted by rotating the spacing screw sleeve (15).
3. A sowing depth adjustment structure according to claim 1, characterized in that: A guide sleeve (16) is installed between the vertical plates (10), and a half shaft (17) is provided on both sides of the guide sleeve (16). A through hole matching the half shaft (17) is opened on the vertical plate (10), and a clamping groove is provided on the outer periphery of the half shaft (17) passing through the through hole. A clamping spring (18) is installed in the clamping groove. The guide sleeve (16) can swing relative to the vertical plate (10). A bearing (19) is also installed in the guide sleeve (16). The non-threaded position of the adjusting screw (11) is installed in a corresponding manner. Two limiting grooves (22) are further provided on the adjusting screw (11) in the bearing (19), and limiting rings (23) are installed in each limiting groove (22). The two limiting rings (23) are respectively located at the front and rear ends of the guide sleeve (16) to achieve axial limiting of the adjusting screw (11) in the guide sleeve (16). When the adjusting screw (11) rotates axially relative to the guide sleeve (16), it can move in and out of the adjusting screw sleeve (12) and thus drive the first swing plate (8) to rotate.
4. A sowing depth adjustment structure according to claim 1, characterized in that: The ends of the first rotating rod (2) and the second rotating rod (3) are circular plates, and square steel is provided between the circular plates. Rubber sleeves (20) matching the square steel are provided at the ends of the first sowing arm (4) and the second sowing arm (6).
5. A sowing depth adjustment structure according to claim 1, characterized in that: A limit plate (21) is installed on the end of the second seeding arm (6); when the limit plate (21) rotates to contact the fixed cross beam frame (1), the distance between the first seeding disc (5) and the second seeding disc (7) and the fixed cross beam frame (1) will not increase any further.
6. A sowing depth adjustment structure according to claim 5, characterized in that: The limit plate (21) is provided with a limit adjustment mechanism, the limit adjustment mechanism comprising an eccentric wheel (24) arranged on one side of the limit plate (21), a spline shaft (25) being installed at one end of the rotation axis of the eccentric wheel (24) passing through the limit plate (21), a detachable anti-rotation plate (26) being installed on the side of the limit plate (21) by means of bolts, the anti-rotation plate (26) being provided with a spline groove (27) matching the spline shaft (25), and the anti-rotation plate (26) being installed on the spline shaft (25) and the limit plate (21) can limit the rotation of the eccentric wheel (24).