Seeding spacing rapid adjusting structure of seeding machine

Abstract

The utility model provides a quick seeding interval adjusting structure of a seeding machine, and belongs to the technical field of agricultural machinery. The seeding spacing adjusting device solves the problem of how to quickly adjust the seeding spacing of the seeding machine. According to the seeding interval rapid adjusting structure of the seeding machine, the seeding machine comprises a walking wheel and a seeding wheel rotationally connected into the walking wheel, a plurality of seed pits arranged at intervals are formed in the outer side wall of the seeding wheel in the circumferential direction, and a plurality of duckbilled assemblies opposite to the positions of the various pits in a one-to-one mode are arranged on the outer side wall of the walking wheel in the circumferential direction at intervals; each duckbilled assembly is detachably connected with a pushing column which is located in the corresponding walking wheel and can push the corresponding sowing wheel to rotate, the rapid sowing interval adjusting structure comprises a plurality of blanking caps and a plurality of adjusting openings which are formed in the surface of one side of the corresponding walking wheel and are arranged at intervals in the circumferential direction, and each adjusting opening is opposite to at least one pushing column in position; and a plurality of blanking caps are detachably connected to the walking wheels and plug the adjusting ports. The seeding interval rapid adjusting structure of the seeding machine can rapidly adjust the seeding interval of the seeding machine.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology and relates to a structure for quickly adjusting the sowing spacing of a seeder. Background Technology

[0002] Seeders are agricultural machines used for large-area sowing in the current technology. They are favored by growers because they replace the manual sowing method used in traditional technology with their high sowing efficiency.

[0003] Paragraph 0020 of the specification of Chinese Patent (Authorization Announcement No.: CN 202721997U) describes that when the operator pushes the seeder forward, the seed box rotates downwards in sequence as the traveling wheels rotate. When the seed box approaches the ground, the corresponding actuating column triggers the hexagonal gear. The hexagonal gear rotates, which in turn drives the driving gear, the driven gear, and the reduction gear to rotate. The reduction gear drives the main shaft and the seed metering wheel to rotate. The seeds in the seed pit at the bottom of the seed metering wheel fall into the seed box, then pass through the pre-seed box (at which time the traveling wheels need to rotate one revolution) and fall into the seed metering nozzle, and finally fall into the soil.

[0004] In other words, the seed output is achieved by the cooperation of a hexagonal gear and a shifting column to drive the seed metering wheel. Through the cooperation of the two, the seed can be accurately passed through the seed inlet box, the pre-seed box, and finally planted into the soil through the seed metering nozzle. It is worth mentioning that this type of structural design often integrates the seed inlet box, the pre-seed box, and the seed metering nozzle into one unit and collectively refers to it as a duckbill assembly. However, in the existing technology, different crops have certain requirements for the sowing spacing. For this reason, users often need to remove the excess duckbill assembly from the driving wheel and install baffles to cover the gaps in the empty gaps. At the same time, they need to replace the seed metering wheel with the corresponding number of seed slots. The disassembly and assembly operation is quite difficult and inconvenient for users. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a structure for rapid adjustment of the seeding spacing of a seeder. The technical problem to be solved by this invention is: how to achieve rapid adjustment of the seeding spacing of a seeder.

[0006] The objective of this utility model can be achieved through the following technical solution: a quick-adjustment structure for the sowing spacing of a seeder, the seeder including a traveling wheel and a sowing wheel rotatably connected within the traveling wheel, the outer wall of the sowing wheel having a plurality of spaced seed pits along the circumferential direction, the outer wall of the traveling wheel having a plurality of circumferentially spaced duckbill assemblies, and the positions of the plurality of duckbill assemblies and the plurality of seed pits being one-to-one, each duckbill assembly being detachably connected to a pusher column, each pusher column being located within the traveling wheel and capable of pushing the sowing wheel to rotate, the quick-adjustment structure for the sowing spacing including a plurality of adjustment ports opened on one side surface of the traveling wheel and spaced along the circumferential direction, each adjustment port being opposite to at least one pusher column, the quick-adjustment structure for the sowing spacing also including a plurality of plugs, the plurality of plugs being detachably connected to the traveling wheel and sealing each of the adjustment ports.

[0007] It should be noted beforehand that a seed box is fixed to the rotating shaft on the traveling wheel of the seeder. Several seed pits are spaced circumferentially on the outer wall of the seeder wheel. The seed box supplies seeds to these seed pits. When the duckbill assembly rotates a certain distance with the traveling wheel, the pushing action of the pusher column forces the seeder wheel to rotate with the same distance, ensuring that a particular seed pit on the outer wall of the seeder wheel faces downwards. This ensures that the seeds in that pit fall precisely into the duckbill assembly directly below. The opening and closing of the duckbill assembly sows the seeds into the soil. However, depending on actual usage requirements, the sowing spacing varies depending on the type of seed. For example, the seeder wheel may have 12 duckbill assemblies, but after changing the seed type, only six duckbill assemblies are needed. To address this, this application provides several spaced adjustment ports on one side plate of the traveling wheel, ensuring that each adjustment port is opposite at least one pusher column on a duckbill assembly. To meet actual usage needs, users can periodically remove the push columns from some of the adjustment ports (e.g., remove the first, third, fifth, seventh, ninth, and eleventh push columns, or remove the second, fourth, sixth, eighth, tenth, and twelfth push columns). In this state, the part of the duckbill assembly with the removed push columns cannot push the seeding wheel, so the seeding wheel will not rotate synchronously with the rotation of the traveling wheel. Consequently, the seed material will not fall into these unused duckbill assemblies. Conversely, the other part of the duckbill assembly equipped with push columns can still obtain and sow the seed material through the aforementioned driving method. Compared with the existing technology, it is not necessary to remove the entire duckbill assembly from the traveling wheel and install cover plates in the corresponding notches. At the same time, it is not necessary to replace the seeding wheel corresponding to the number of seed pits. The operation is more convenient, and the purpose of quickly adjusting the sowing spacing is achieved. Secondly, by setting the plug, each adjustment port is effectively sealed to prevent impurities from entering the cavity of the traveling wheel.

[0008] In the aforementioned rapid adjustment structure for the seeding spacing of the seeder, an inner wheel body is fixed inside the traveling wheel, and the seeding wheel is rotatably connected to the inner wheel body. A push ratchet connected to the seeding wheel via a gear set is rotatably connected to one side of the outer wall of the inner wheel body. Each push pin can push the push ratchet to rotate when the traveling wheel rotates. The seed box of the seeder and the internal cavity of the inner wheel body fixed inside the traveling wheel are connected. The seeds in the seed box can fall into the cavity of the inner wheel body for temporary storage under the action of gravity. The seeding wheel is specifically located below the material inlet. The driving of the seeding wheel is actually achieved by the push ratchet connected by the gear set cooperating with the push pins on each duckbill assembly. The push pin pushes the ratchet to rotate a certain extent, so that the gear set drives the seeding wheel to rotate synchronously by a certain extent, thereby realizing the synchronous rotation of the seeding wheel and the traveling wheel, and ensuring that the positions of the several seed pits and several duckbill assemblies on the seeding wheel are always one-to-one.

[0009] In the aforementioned rapid adjustment structure for the seeding spacing of the seeder, several of the adjustment ports are elongated and curved, and several of the end caps are elongated and curved, with each end cap engaging in pairs within the adjustment ports. This arrangement allows a single adjustment port to cover a greater number of corresponding duckbill assemblies, thereby appropriately reducing the number of openings on the outer wall of the traveling wheel and avoiding any impact on the structural strength of the traveling wheel.

[0010] In the aforementioned quick-adjustment structure for the seeding spacing of the seeder, each of the push columns includes a screw and a roller. The roller is rotatably connected to the screw, and the screw is screwed to the duckbill assembly. Using a screw as the main component ensures that users can quickly assemble and disassemble the push column using tools such as screwdrivers. The roller is connected to the screw by rotation, greatly reducing the friction between it and the push ratchet, ensuring normal operation while reducing wear.

[0011] In the aforementioned quick-adjustment structure for the seeding spacing of the seeder, a slot is provided on one side of the groove wall of each adjustment port, and a locking groove is provided on the other side. One side of the plug has an insertion part protruding from that side wall, and the other side has a locking part protruding from that side wall. The insertion part is inserted into the slot, and the locking part is locked into the locking groove. The plug first inserts its insertion part into the slot on one side of the adjustment port, thus initially positioning one side of the plug. Then, using the insertion point as a fulcrum, the plug is pressed downwards to lock the locking part into the locking groove. The elasticity of the locking part and the elasticity of the locking groove wall ensure the stability of the plug's installation within the adjustment port.

[0012] In the aforementioned quick-adjustment structure for the seeding spacing of the seeder, each of the adjustment ports has a first abutment portion at both ends that is curved in an arc shape. Each first abutment portion protrudes from the inner wall of the adjustment port. The two ends of the side plate of the plug facing the inner cavity of the traveling wheel abut against the two first abutment portions. The first abutment portions located at both ends of the adjustment port provide auxiliary support to the two ends of the plug, thereby further improving the installation stability of the plug in the adjustment port.

[0013] In the aforementioned quick-adjustment structure for the seeding spacing of the seeder, each adjustment port has a second abutment portion that protrudes inward and is opposite to the slot. Each adjustment port also has a third abutment portion protruding inward on both sides of the slot. The side of the plug facing the cavity of the traveling wheel abuts against the second abutment portion, and the other side abuts against the third abutment portion. The abutment portions of the second and third abutment portions support and lift the plug on both sides, thereby further improving the installation stability of the plug in the adjustment port.

[0014] In the aforementioned quick-adjustment structure for the seeding spacing of the seeder, each of the adjustment ports has a limiting part protruding into the cavity of the traveling wheel on both sides of the slot, and the two sides of the locking part are in contact with the two limiting parts. The two limiting parts limit the position of the locking part on the end cap when it is inserted into the slot, ensuring that it is firmly positioned inside the slot.

[0015] In the aforementioned quick-adjustment structure for the seeding spacing of the seeder, a disassembly port is provided on one side plate of the traveling wheel, which has several adjustment ports. The disassembly port is circular with an inner diameter larger than the outer diameter of the push ratchet. The inner wheel can rotate, positioning the push ratchet opposite the disassembly port. A sealing cap is detachably connected to the traveling wheel to block the disassembly port. As one of the driving components, the push ratchet may experience slippage between itself and the gear set after prolonged use. In this case, the user can remove and replace the push ratchet through the disassembly port when it is aligned with the gear, ensuring convenient maintenance. Generally, the disassembly port is sealed with the sealing cap.

[0016] Compared with existing technologies, the rapid adjustment structure for the seeding spacing of this seeder has the following advantages: By opening several circumferentially spaced adjustment ports on the outer wall of the traveling wheel, and ensuring that each adjustment port is opposite to at least one push column, when sowing different crop seeds, the plugs in some of the adjustment ports can be removed accordingly. Then, by inserting a workpiece into the adjustment port, some of the push columns can be removed, thereby disengaging the linkage between part of the duckbill assembly and the seeding wheel, thus achieving rapid adjustment of the seeding spacing of the seeder. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of the quick-adjustment mechanism for the seeding spacing of this seeder.

[0018] Figure 2 This is a schematic diagram and a partial enlarged view of the structure of the quick-adjustment mechanism for the seeding spacing of this seeder, which allows for the removal of any one of the plugs.

[0019] Figure 3 This is a schematic diagram of the structure for quickly adjusting the seeding spacing of this seeder, including the removal of the sealing cover and any one of the plugs.

[0020] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0021] Figure 5 This is a schematic diagram of the structure of any plug.

[0022] Figure 6 This is a schematic diagram of the structure of the seeder with quick adjustment of the sowing spacing and removal of the side cover of the walking wheel.

[0023] Figure 7 This is a cross-sectional view of the seeder and a magnified view of a portion thereof.

[0024] In the diagram, 1. Walking wheel; 11. Inner wheel body; 111. Push ratchet; 12. Duckbill assembly; 13. Adjustment port; 131. Slot; 132. Slot; 133. First abutment part; 134. Second abutment part; 135. Third abutment part; 136. Limiting part; 14. Disassembly / assembly port; 15. Seeding wheel; 151. Seeding pit; 2. Pushing column; 21. Screw; 22. Roller; 3. Cover; 31. Insertion part; 32. Snap-fit ​​part; 4. Sealing cover. Detailed Implementation

[0025] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 6 as well as Figure 7As shown, the seeder includes a traveling wheel 1, an inner wheel body 11 rotatably connected within the traveling wheel 1, and several duckbill assemblies 12 spaced circumferentially on the outer wall of the traveling wheel 1. For details on how the seed material is supplied and how sowing is achieved via the duckbill assemblies, please refer to the invention patent application CN118614224A. Further details are omitted in this embodiment. A sowing wheel with several circumferentially shaped seed pits 151 is rotatably connected below the material inlet of the inner wheel body 11. The number and position of the seed pits 15 on the sowing wheel 15 correspond one-to-one with the duckbill assemblies. A push ratchet 111 connected to a gear set inside the inner wheel body 11 is located on one side surface of the traveling wheel 1. The gear set specifically connects the push ratchet 111 and the sowing wheel 15. Each duckbill assembly 12 is connected to a push column 2 located within the cavity of the traveling wheel 1. Specifically, as shown... Figure 4 As shown, the duckbill assembly 12 is embedded in the outer wall of the cavity of the walking wheel 1 (i.e., the outer wall of the pre-seeding box of the duckbill assembly 12) and has a threaded hole. The push column 2 is composed of two parts: a screw 21 and a roller 22. The roller 22 is sleeved on the outside of the screw 21 and can rotate circumferentially relative to the screw 21. The screw 21 is screwed and positioned in the threaded hole. During operation, the rotating walking wheel 1 can push the ratchet 111 by the push column 2 (specifically the roller 22) on each duckbill assembly 12, so that it rotates around the axis. The gear set in the inner wheel body 11 drives the seeding wheel 15 installed in the inner wheel body 11 to rotate synchronously by a certain amplitude, so that any seed pit 151 on the seeding wheel 15 is in a downward state. At this time, the seed material embedded in the seed pit 151 falls into the duckbill assembly 12 under the action of gravity.

[0027] Combination Figure 5 The rapid sowing spacing adjustment structure includes adjustment ports 13 spaced circumferentially on one side surface of the traveling wheel 1. Each adjustment port 13 is connected to the internal cavity of the traveling wheel 1. Each adjustment port 13 is elongated and curved, and each adjustment port 13 is opposite to at least one push post 2. The rapid sowing spacing adjustment structure also includes several strip-shaped, curved end caps 3, which are connected and positioned one-to-one within the adjustment ports 13. Specifically, as shown... Figure 4As shown, taking an adjustment port 13 and a plug 3 as an example, two slots 131 are provided on one side wall of the adjustment port 13, and the two slots 131 are arranged at intervals along the length direction of the adjustment port 13. A slot 132 is provided in the middle of the other side wall of the adjustment port 13. Correspondingly, two outwardly protruding insertion parts 31 are provided on one side of the plug 3, and the two insertion parts 31 are arranged at intervals along the length direction of the outer wall of the plug 3 on that side. A protruding locking part 32 is provided in the middle of the outer wall of the plug 3 on the other side. The locking part 32 is specifically continuously bent into a V shape. During assembly, the plug 3 is first inserted into the two slots 131 through the two insertion parts 31, and then flipped with the insertion points as fulcrum so that the locking part 32 is engaged with the slot 132 and abuts against the slot wall of the slot 132, thereby sealing the adjustment port 13 through the plug 3. In addition, as shown in the figure, Figure 2 and Figure 4 As shown, the adjustment port 13 has inwardly protruding and arc-shaped first abutment portions 133 at both ends. On the side wall of the adjustment port 13 with slots 131 and located between the two slots 131, there is a second abutment portion 134 protruding towards the inner wall of the adjustment port 13 with slots 132. On the side wall of the adjustment port 13 with slots 132 and located on both sides of slots 132, there are third abutment portions 135 protruding towards the inner wall of the adjustment port 13 with slots 131. After the plug 3 is assembled in place, the two first abutment portions 133 assist in lifting the two ends of the plug 3, and the second abutment portion 134 and the two third abutment portions 135 assist in lifting the two sides of the plug 3, thereby ensuring the stability of the plug 3 in the adjustment port 13.

[0028] In addition, such as Figure 2 As shown, the adjustment port 13 has limiting portions 136 protruding into the cavity inside the traveling wheel 1 on both sides of the slot 132. After the blocking portion 32 is engaged in the slot 132, its two sides are fitted against the two limiting portions 136, as shown. Figure 1-3 As shown, a circular disassembly port 14 is provided on one side plate of the traveling wheel 1, which has several adjustment ports 13. The inner diameter of the disassembly port 14 is larger than the outer diameter of the push ratchet 111. When the traveling wheel 1 rotates to a certain extent and is in a positioning state, the axis of the push ratchet 111 can be aligned with the center of the disassembly port 14, that is, the push ratchet 111 can be disassembled through the disassembly port 14. A sealing cover 4 that can seal the disassembly port 14 is detachably connected to this side plate of the traveling wheel 1.

[0029] Operating principle: Before sowing different crop seed materials, taking a seeder with 12 duckbill assemblies 12 as an example, and the required sowing spacing being twice the previous sowing spacing, the user removes each cap 3 from the traveling wheel 1 in sequence, exposing the push pins on each duckbill assembly 12 through the adjustment port 13. Then, the user removes the first, third, fifth, seventh, ninth, and eleventh push pins 2 (or the second, fourth, sixth, eighth, tenth, and twelfth push pins 2) using a screwdriver as needed. Then, the caps 3 are reinstalled in sequence. At this point, the duckbill assembly 12, after being removed, no longer has push pins 2 pushing the ratchet 111 to rotate, therefore even if... The device can open and close while the walking wheel 1 is rotating, and the sowing wheel 151 will not rotate, so that the seed pit 151 faces downward to supply seed material to the duckbill assembly 12. The other duckbill assemblies 12 can still work normally. The sowing spacing can be quickly adjusted without removing some of the duckbill assemblies 12. In addition, the push ratchet 111, as a transmission component, needs to cooperate with each push column and also needs to cooperate with the gear set in the inner wheel body 11. Over time, there will inevitably be a slippage between it and the gear set. In this case, the walking wheel 1 can be rotated so that the disassembly port 14 and the push ratchet 111 are in the same position. Then, the sealing cover 4 can be removed and the push ratchet 111 can be removed and replaced. Finally, the sealing cover 4 can be reinstalled.

[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0031] Although this article frequently uses terms such as walking wheel 1, inner wheel body 11, push ratchet 111, duckbill assembly 12, adjustment port 13, slot 131, groove 132, first abutment part 133, second abutment part 134, third abutment part 135, limiting part 136, disassembly port 14, sowing wheel 15, seed pit 151, push column 2, screw 21, roller 22, plug 3, insertion part 31, snap-fit ​​part 32, and sealing cover 4, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A quick-adjustment structure for the sowing spacing of a seeder, the seeder comprising a traveling wheel (1) and a sowing wheel (15) rotatably connected within the traveling wheel (1), wherein the outer wall of the sowing wheel (15) has a plurality of spaced-apart seed pits (151), and the outer wall of the traveling wheel (1) is provided with a plurality of circumferentially spaced-apart duckbill assemblies (12), wherein the positions of the plurality of duckbill assemblies (12) and the plurality of seed pits (151) are one-to-one opposite, characterized in that, Each of the duckbill assemblies (12) is detachably connected to a pusher column (2). Each pusher column (2) is located inside the walking wheel (1) and can push the sowing wheel (15) to rotate. The quick sowing spacing adjustment structure includes a plurality of adjustment ports (13) opened on one side surface of the walking wheel (1) and spaced apart along the circumference. Each adjustment port (13) is opposite to at least one pusher column (2). The quick sowing spacing adjustment structure also includes a plurality of plugs (3). The plurality of plugs (3) are detachably connected to the walking wheel (1) and seal each of the adjustment ports (13).

2. The quick-adjustment structure for the seeding spacing of the seeder according to claim 1, characterized in that, An inner wheel body (11) is fixed inside the walking wheel (1). The seeding wheel (15) is rotatably connected in the inner wheel body (11). A push ratchet (111) connected to the seeding wheel (15) via a gear set is rotatably connected on one side of the outer wall of the inner wheel body (11). Each push column (2) can push the push ratchet (111) to rotate when the walking wheel rotates.

3. The quick-adjustment structure for the seeding spacing of the seeder according to claim 2, characterized in that, The adjustment ports (13) are all long strips and curved in an arc shape, and the plugs (3) are all long strips and curved in an arc shape, and each plug (3) is snapped into the adjustment ports (13) in pairs.

4. The quick-adjustment structure for the seeding spacing of the seeder according to claim 1, 2, or 3, characterized in that, Each of the pusher columns (2) includes a screw (21) and a roller (22), the roller (22) being rotatably connected to the screw (21), and the screw (21) and the duckbill assembly (12) being screwed together.

5. The quick-adjustment structure for the seeding spacing of the seeder according to claim 3, characterized in that, Each of the adjustment ports (13) has a slot (131) on one side of its groove wall and a slot (132) on the other side. The plug (3) has an insertion part (31) protruding from the side wall on one side and a slot (32) protruding from the side wall on the other side. The insertion part (31) is inserted into the slot (131) and the slot (32) is engaged in the slot (132).

6. The quick-adjustment structure for the seeding spacing of the seeder according to claim 3 or 5, characterized in that, Each of the adjustment ports (13) has a first abutment (133) at both ends that are curved in an arc shape. Each of the first abutment (133) protrudes from the inner wall of the adjustment port (13). The plug (3) abuts against the two first abutment (133) at both ends of the side plate facing the inner cavity of the walking wheel (1).

7. The quick-adjustment structure for the seeding spacing of the seeder according to claim 5, characterized in that, Each of the adjustment ports (13) has a second abutment (134) that protrudes inward and is opposite to the slot (132). Each of the adjustment ports (13) has a third abutment (135) that protrudes inward on both sides of the slot (132). The plug (3) abuts against the second abutment (134) on one side of the plate facing the cavity of the walking wheel (1), and abuts against the third abutment (135) on the other side.

8. The quick-adjustment structure for the seeding spacing of the seeder according to claim 7, characterized in that, Each of the adjustment ports (13) has a limiting part (136) located on both sides of the slot (132) that protrudes into the cavity of the walking wheel (1), and the two sides of the snap-fit ​​part (32) are in contact with the two limiting parts (136).

9. The quick-adjustment structure for the seeding spacing of the seeder according to claim 8, characterized in that, The walking wheel (1) has a plurality of adjustment ports (13) on one side plate, and a disassembly port (14) is provided. The disassembly port (14) is circular and its inner diameter is larger than the outer diameter of the push ratchet (111). The inner wheel body (11) can rotate and make the push ratchet (111) and the disassembly port (14) are positioned opposite each other. A sealing cover (4) that seals the disassembly port (14) is detachably connected to the walking wheel (1).

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