Depth adjustment device for sowing in different soils
By using a motor-driven ratchet and pawl structure and a shock-absorbing design, the problem of cumbersome and inaccurate manual adjustment of the seeder in different soil conditions is solved, and automatic adjustment and measurement of the sowing depth is achieved, thus improving work efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 东明县渔沃街道办事处
- Filing Date
- 2025-08-04
- Publication Date
- 2026-06-26
AI Technical Summary
Existing seeders suffer from cumbersome manual adjustment methods when dealing with different soil types, resulting in poor accuracy and stability and low operating efficiency.
It adopts a motor-driven ratchet and pawl structure. The elliptical cylindrical design of the ratchet drives the pawl to move up and down. Combined with the sliding connection of the sliding sleeve and the furrow opener, it can automatically adjust the sowing depth. It is equipped with shock-absorbing blocks and shock-absorbing rings to reduce vibration. The depth is measured using scale marks or scale ropes.
It achieves precise and stable automatic adjustment of sowing depth, improves work efficiency, reduces the impact of vibration, and provides depth measurement function.
Smart Images
Figure CN224402165U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a sowing depth adjustment device suitable for different soil types. Background Technology
[0002] A seeder is an agricultural machine that can accurately control seed sowing depth, plant spacing, row spacing, and seeding rate according to agronomic requirements. Sowing depth is a key factor affecting seed germination and growth. Moreover, for the same crop, the sowing depth needs to be adjusted differently in different regions based on factors such as soil compaction and moisture content. Therefore, the sowing depth limiting device is one of the key components of seeding machinery.
[0003] Currently, when sowing in different soil conditions, existing seeders typically use manual mechanical adjustments, such as fixing the depth limit wheel height with bolts or adjusting the length of the pull rod. This adjustment method is cumbersome and suffers from poor accuracy and stability, resulting in low operational efficiency. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a seeding depth adjustment device suitable for different soils, aiming to solve the problems of cumbersome operation of manual mechanical adjustment methods, poor accuracy and stability, and low work efficiency.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a sowing depth adjustment device suitable for different soil types, comprising a support frame, a motor mounted on one side of the support frame, a rotating rod rotatably connected inside the support frame, the output end of the motor fixedly mounted on one end of the rotating rod, a plurality of ratchet wheels fixedly connected to the outer wall of the rotating rod, the ratchet wheels being elliptical cylindrical, the teeth of the ratchet wheels meshing with pawls, a furrow opener fixedly connected to the lower side of the pawls, a sliding sleeve slidably connected to the outer wall of the furrow opener, the upper side of the sliding sleeve fixedly connected to the outer wall of the support frame, and a measuring component mounted on the outer wall of the sliding sleeve.
[0006] The above technical solution, by designing the ratchet as an elliptical cylinder and engaging it with the pawl, allows the ratchet to rotate and push the pawl up and down, thereby moving the trencher up and down. This solves the problems of cumbersome operation, poor accuracy and stability, and low work efficiency associated with manual mechanical structures.
[0007] Preferably, a plurality of shock-absorbing blocks are fixedly connected to the outer wall of the rotating rod, and the outer wall of the shock-absorbing blocks is fixedly connected to the inner wall of the ratchet.
[0008] Preferably, bearings are fixedly connected to the outer walls of both ends of the rotating rod, and shock-absorbing rings are fixedly connected to the outer walls of the bearings. The outer walls of the shock-absorbing rings are fixedly connected to the inner walls of both sides of the bracket.
[0009] Preferably, an extension ring is provided on one side of the bracket, a protective cover is provided on the side of the extension ring away from the bracket, and the motor is located inside the extension ring.
[0010] Preferably, the output end of the motor is provided with a first gear, and a second gear is fixedly connected to the outer wall of one end of the rotating rod, with the tooth ends of the first gear and the tooth ends of the second gear meshing together.
[0011] Preferably, both the sliding sleeve and the outer wall of the trencher are fixedly connected to a connecting rod, and a spring is fixedly connected between the outer walls of the two connecting rods.
[0012] Preferably, the measuring component includes a scale mark disposed on the outer wall of the trencher.
[0013] Preferably, the measuring component includes a graduated rope, one end of which is fixedly connected to the lower side of the sliding sleeve.
[0014] This utility model has the following beneficial effects:
[0015] 1. In this utility model, the motor is supported by a bracket, and the motor output drives the rotating rod to rotate, which in turn drives the ratchet to rotate. The ratchet is designed to be elliptical and cylindrical, so that the ratchet pushes the pawl to move up and down during rotation. The sliding connection between the sliding sleeve and the trencher allows the trencher to slide up and down. With the cooperation of the measuring components, the problem of cumbersome operation and poor accuracy and stability of manual mechanical structure adjustment, which leads to low work efficiency, is solved.
[0016] 2. In this utility model, the design of the damping block and the damping ring enables the transmission of vibration to be reduced through the deformation of the damping block and the damping ring when there is sudden resistance and vibration occurs, thereby realizing the damping function of the device.
[0017] 3. In this utility model, by designing the measuring component as a scale mark or scale rope, when the trencher and the sliding sleeve slide relative to each other, the depth of the trencher can be determined by comparing the exposed scale mark or the connecting rod with the scale rope, thereby realizing the function of the measuring component to measure the depth of the trencher. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the sowing depth adjustment device for different soil types proposed in this utility model;
[0019] Figure 2 This is a schematic diagram of the scale rope structure of the sowing depth adjustment device suitable for different soils proposed in this utility model;
[0020] Figure 3This is a schematic diagram of the internal structure of the extension ring of the seeding depth adjustment device suitable for different soils proposed in this utility model;
[0021] Figure 4 This is a schematic diagram of the internal structure of the support frame for the seeding depth adjustment device suitable for different soils proposed in this utility model.
[0022] Figure 5 This is a schematic diagram of the exploded structure of the ratchet of the seeding depth adjustment device suitable for different soils proposed in this utility model.
[0023] Legend:
[0024] 1. Support; 2. Extension ring; 3. Protective cover; 4. Sliding sleeve; 5. Connecting rod; 6. Spring; 7. Measuring component; 8. Scale mark; 9. Grooving tool; 10. Scale rope; 11. Motor; 12. Gear 1; 13. Rotating rod; 14. Gear 2; 15. Bearing; 16. Shock absorber ring; 17. Ratchet; 18. Shock absorber block; 19. Pawl. Detailed Implementation
[0025] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0026] Example 1:
[0027] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a sowing depth adjustment device suitable for different soil types, comprising a support 1, a motor 11 disposed on one side of the support 1, a rotating rod 13 rotatably connected inside the support 1, the output end of the motor 11 being fixedly disposed at one end of the rotating rod 13, a plurality of ratchet wheels 17 being fixedly connected to the outer wall of the rotating rod 13, the ratchet wheels 17 being elliptical cylindrical, the tooth ends of the ratchet wheels 17 being meshed with pawls 19, the lower side of the pawls 19 being fixedly connected to a furrow opener 9, the outer wall of the furrow opener 9 being slidably connected to a sliding sleeve 4, the upper side of the sliding sleeve 4 being fixedly connected to the outer wall of the support 1, and a measuring component 7 disposed on the outer wall of the sliding sleeve 4.
[0028] In this embodiment, Figure 1The orientation is indicated by the front, back, left, and right sides. When the depth of the trencher 9 needs to be adjusted, the bracket 1 provides support for the motor 11. The output of the motor 11 drives the rotating rod 13 to rotate, which in turn drives the ratchet 17 to rotate. The teeth of the ratchet 17 mesh with the pawl 19, allowing the teeth of the pawl 19 to slide on the upper side of the pawl 19. Due to the elliptical design of the ratchet 17, the distance that the ratchet 17 pushes the pawl 19 downward varies during rotation. The bracket 1 supports the sliding sleeve 4, and the sliding sleeve 4 and the trencher 9 slide up and down, thereby achieving the adjustment of the depth of the trencher 9. Furthermore, the meshing of each tooth on the pawl 19 and the ratchet 17 makes the distance of the trencher 9 sliding up and down measurable. This solves the problems of cumbersome operation and poor accuracy and stability of manual mechanical adjustment methods, which lead to low work efficiency.
[0029] Reference Figure 4 and Figure 5 Multiple shock absorbers 18 are fixedly connected to the outer wall of the rotating rod 13, and the outer wall of the shock absorber 18 is fixedly connected to the inner wall of the ratchet 17.
[0030] Specifically, the shock absorber 18 is composed of metal components and rubber materials. While providing support, it also has a certain shock absorption effect, which is the existing technology. When the trencher 9 encounters a stone or hard object during the trenching process, it will suddenly generate a large resistance, causing the trencher 9 to vibrate suddenly. The vibration is transmitted to the ratchet 17 through the pawl 19, which in turn causes the shock absorber 18 set between the ratchet 17 and the rotating rod 13 to deform, absorb the vibration, and slow down the transmission of the vibration, thereby realizing the shock absorption function of the device.
[0031] Reference Figure 3 Bearings 15 are fixedly connected to the outer walls of both ends of the rotating rod 13. A shock-absorbing ring 16 is fixedly connected to the outer wall of the bearing 15. The outer wall of the shock-absorbing ring 16 is fixedly connected to the inner walls of both sides of the bracket 1.
[0032] Specifically, the inner ring of bearing 15 is fixedly connected to the outer wall of rotating rod 13, and the outer ring of bearing 15 is fixedly connected to the inner walls on both sides of bracket 1. The relative rotation between the inner and outer rings of bearing 15 realizes the relative rotation between rotating rod 13 and bracket 1. The damping ring 16 is composed of metal components and rubber materials. While providing support, it also has a certain damping effect, which is the existing technology. The damping ring 16 can reduce the vibration transmission between rotating rod 13 and bracket 1, and further improve the damping function of the device.
[0033] Reference Figure 2 and Figure 3 An extension ring 2 is provided on one side of the bracket 1, and a protective cover 3 is provided on the side of the extension ring 2 away from the bracket 1. The motor 11 is located inside the extension ring 2.
[0034] Specifically, the extension ring 2 extends the space of the bracket 1, thereby providing operating space for the motor 11, and the protective cover 3 isolates the motor 11 from the external environment, thus protecting the motor 11.
[0035] Reference Figure 3 The output end of the motor 11 is provided with a gear 12, and a gear 14 is fixedly connected to the outer wall of one end of the rotating rod 13. The tooth ends of the gear 12 and the tooth ends of the gear 14 are meshed together.
[0036] Specifically, the motor 11, gear 12, one end of the rotating rod 13, and gear 14 are all located inside the extension ring 2 and isolated from the external environment by the protective cover 3. The output end of the motor 11 drives gear 12 to rotate, which in turn drives gear 14 to rotate, thereby achieving the effect of driving the rotating rod 13 to rotate.
[0037] Reference Figure 1 Both the sliding sleeve 4 and the trencher 9 are fixedly connected to the outer walls of the connecting rods 5, and a spring 6 is fixedly connected between the outer walls of the two connecting rods 5.
[0038] Specifically, by tightening the two connecting rods 5 with the spring 6, the spring 6 tightens the trench opener 9 and the sliding sleeve 4, which not only achieves depth adjustment of the trench opener 9, but also prevents the trench opener 9 from slipping out of the sliding sleeve 4.
[0039] Reference Figure 1 The measuring component 7 includes a scale mark 8, which is set on the outer wall of the trencher 9.
[0040] Specifically, after the trencher 9 completes the depth adjustment, the depth of the trencher 9 can be determined by observing the scale markings 8 on the exposed outer wall of the trencher 9, thereby realizing the function of the measuring component 7 in measuring the depth of the trencher 9.
[0041] Example 2:
[0042] Reference Figure 2 The present invention also provides an embodiment in which the measuring component 7 includes a scale rope 10, one end of which is fixedly connected to the lower side of the sliding sleeve 4.
[0043] Specifically, after the trencher 9 completes the depth adjustment, the spring 6 will deform, and the distance between the two connecting rods 5 will change. The depth of the trencher 9 can be judged by comparing the position of the connecting rods 5 on the scale rope 10, thereby realizing the function of the measuring component 7 to measure the depth of the trencher 9.
[0044] Working principle: When the depth of the trencher 9 needs to be adjusted, the output of the motor 11 drives the gear 12 to rotate, which in turn drives the gear 14 to rotate, causing the rotating rod 13 to rotate, which in turn drives the ratchet 17 to rotate. This causes the tooth end of the ratchet 17 to slide on the upper side of the pawl 19. Due to the elliptical design of the ratchet 17, the ratchet 17 pushes the pawl 19 downwards by different distances during rotation, thereby achieving the adjustment of the depth of the trencher 9.
[0045] If the measuring component 7 is a scale mark 8, the depth of the trencher 9 can be determined by observing the scale mark 8 exposed on the outer wall of the trencher 9; if the measuring component 7 is a scale rope 10, the depth of the trencher 9 can be determined by comparing the position of the connecting rod 5 on the trencher 9 on the scale rope 10, thus realizing the function of measuring the depth of the trencher 9 by the measuring component 7; and through the design of the shock-absorbing block 18 and the shock-absorbing ring 16, the problem of cumbersome operation and poor accuracy and stability of the manual mechanical structure adjustment method, which leads to low work efficiency, is solved.
[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A seeding depth adjustment device suitable for different soil types, comprising a support frame (1), characterized in that: A motor (11) is provided on one side of the bracket (1). A rotating rod (13) is rotatably connected inside the bracket (1). The output end of the motor (11) is fixedly located at one end of the rotating rod (13). Multiple ratchet wheels (17) are fixedly connected to the outer wall of the rotating rod (13). The ratchet wheels (17) are elliptical cylindrical. The teeth of the ratchet wheels (17) are meshed with pawls (19). A ditch opener (9) is fixedly connected to the lower side of the pawls (19). A sliding sleeve (4) is slidably connected to the outer wall of the ditch opener (9). The upper side of the sliding sleeve (4) is fixedly connected to the outer wall of the bracket (1). A measuring component (7) is provided on the outer wall of the sliding sleeve (4).
2. The seeding depth adjustment device suitable for different soil types according to claim 1, characterized in that: The outer wall of the rotating rod (13) is fixedly connected to a plurality of shock-absorbing blocks (18), and the outer wall of the shock-absorbing blocks (18) is fixedly connected to the inner wall of the ratchet (17).
3. The seeding depth adjustment device suitable for different soil types according to claim 1, characterized in that: The outer walls of both ends of the rotating rod (13) are fixedly connected to bearings (15), and the outer walls of the bearings (15) are fixedly connected to shock-absorbing rings (16). The outer walls of the shock-absorbing rings (16) are fixedly connected to the inner walls of both sides of the bracket (1).
4. The seeding depth adjustment device suitable for different soils according to claim 1, characterized in that: An extension ring (2) is provided on one side of the bracket (1), and a protective cover (3) is provided on the side of the extension ring (2) away from the bracket (1). The motor (11) is located inside the extension ring (2).
5. The seeding depth adjustment device suitable for different soil types according to claim 1, characterized in that: The output end of the motor (11) is provided with a gear one (12), and a gear two (14) is fixedly connected to the outer wall of one end of the rotating rod (13). The tooth ends of the gear one (12) and the tooth ends of the gear two (14) are meshed together.
6. The seeding depth adjustment device suitable for different soil types according to claim 1, characterized in that: The outer walls of the sliding sleeve (4) and the trencher (9) are both fixedly connected with connecting rods (5), and springs (6) are fixedly connected between the outer walls of the two connecting rods (5).
7. The seeding depth adjustment device suitable for different soils according to claim 1, characterized in that: The measuring component (7) includes a scale mark (8) which is disposed on the outer wall of the trencher (9).
8. The seeding depth adjustment device suitable for different soils according to claim 1, characterized in that: The measuring component (7) includes a scale rope (10), one end of which is fixedly connected to the lower side of the sliding sleeve (4).