Seeding driving structure

Abstract

The utility model provides a seeding driving structure. The seed metering cavity comprises a seed metering cavity shell, a roller, a supporting shaft and a walking support, the supporting shaft is fixedly connected to the walking support, the seed metering cavity shell is located in the roller, the roller comprises a connecting plate located in the middle and a plurality of splicing blocks, and the splicing blocks are located on the periphery of the connecting plate. The supporting shaft is connected to the seed metering cavity shell, a seed wheel with a seed groove is rotationally connected into the seed metering cavity shell, a driving gear is connected to the seed wheel and located between the seed metering cavity shell and the roller, a driving part is installed on the connecting plate body, and the driving part drives the seed metering cavity shell to rotate along with rotation of the connecting plate body. The driving part is matched with the driving gear, so as to drive the seed wheel to rotate. The driving structure is high in rotation stability and convenient to install integrally.

Description

Technical Field

[0001] The utility model relates to a seeder, and particularly to a seeding drive structure. Background Art

[0002] The existing seeder structure is a hand-pushed rolling seeder as disclosed in the Chinese utility model patent with the publication number CN201467660U. Its main structure includes a seed and fertilizer box and seed nozzles. The structure of the seed and fertilizer box includes a connecting plate body located in the middle and several splicing blocks. The connecting plate body is disc-shaped, and several splicing blocks are distributed around the connecting plate body. A seed nozzle is installed on each splicing block.

[0003] The above seeder only discloses the external structural form. Actually, there is also a seed discharging cavity housing inside, which is installed inside the seed and fertilizer box. The seed discharging cavity housing is fixedly connected to the hand push handle, and the seed and fertilizer box can rotate relative to the seed discharging cavity housing. A seed wheel with multiple seed grooves is also installed inside the seed discharging cavity housing. Seeds fall into the seed grooves, and when the seed wheel rotates, the seeds in the seed grooves of the seed wheel will fall into the designated seed nozzles in sequence for seeding.

[0004] The traditional driving form of the seed wheel is as follows: a driving gear is installed on the seed wheel, and a driving rod is installed on the splicing block; when the seed and fertilizer box rotates, the driving rod on the splicing block meshes with the tooth grooves of the driving gear, and finally drives the entire seed wheel to rotate. Although the above driving form of the seed wheel can drive the seed wheel, in the actual assembly process, it is required that each splicing block and the connecting plate body have a high installation accuracy, and the assembly complexity is relatively high. If one splicing block is not installed accurately, the driving effect of the seed wheel will be affected; during long-term use, the splicing block is also prone to a certain displacement relative to the connecting plate body, which will also affect the driving effect of the seed wheel. Summary of the Utility Model

[0005] In view of this, the purpose of the utility model is to provide a seeding drive structure, in which the driving member is arranged on the connecting plate body, and the driving stability of the seed wheel is greatly improved.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] A seeding drive structure includes a seed metering cavity housing, a drum, a support shaft, and a walking bracket. The support shaft is fixedly connected to the walking bracket. The seed metering cavity housing is located inside the drum. The drum includes a connecting plate body in the middle and several split blocks. The several split blocks are located around the connecting plate body. The support shaft is connected to the seed metering cavity housing. A seed wheel with seed grooves is rotatably connected inside the seed metering cavity housing. A driving gear is connected to the seed wheel. The driving gear is located between the seed metering cavity housing and the drum. A driving member is installed on the connecting plate body. As the connecting plate body rotates, the driving member cooperates with the driving gear to drive the seed wheel to rotate.

[0008] Through the above technical solution, during normal use, the drum formed by the connecting plate body and the split blocks will rotate, and the driving member on the connecting plate body will also move accordingly. The driving member will cooperate with the driving gear to finally drive the seed wheel to rotate. During the above use process, since the driving member is arranged on the connecting plate body, even if there is a certain displacement between the split blocks and the connecting plate body, it will not affect the stable rotation of the seed wheel. In addition, during installation, there is no need to consider the installation accuracy between the split blocks and the connecting plate body, and only the cooperation accuracy between the driving member on the connecting plate body and the driving gear needs to be ensured, so the installation is convenient.

[0009] Preferably, the driving member includes a driving rod. There are insertion holes on the connecting plate body. The driving rod is inserted into the connecting plate body. The driving rod cooperates with the tooth grooves of the driving gear to drive the driving gear to rotate.

[0010] Through the above technical solution, only need to insert the driving rod into the insertion hole. As the connecting plate body rotates, the driving rod will also move accordingly. The driving rod cooperates with the tooth grooves of the driving gear, and the driving gear can rotate, with high driving stability. In addition, as the use time becomes longer, if the driving rod is worn, the driving rod can be pulled out of the insertion hole and a new driving rod can be installed, which is convenient for subsequent maintenance.

[0011] Preferably, there are two or more insertion holes provided on the connecting plate body, and all the insertion holes are arranged in a circumferential array along the rotation center of the connecting plate body.

[0012] Through the above technical solution, according to the actual required rotation speed of the seed wheel, the insertion rods can be inserted into the insertion holes with appropriate numbers and at appropriate positions.

[0013] Preferably, there are two or more convex platforms on the connecting plate body, and the insertion holes are correspondingly arranged on the convex platforms one by one.

[0014] Through the above technical solution, the overall thickness of the connecting plate body can be controlled, and the connection stability of the insertion rod can be determined according to the structural strength of the convex platform provided.

[0015] Preferably, reinforcing ribs are connected between two adjacent ones of the bosses.

[0016] Through the above technical solution, the structural strength of the boss can be enhanced, and the installation stability of the inserting rod is further improved.

[0017] Preferably, a main transmission gear is connected to the driving gear, and a secondary transmission gear for meshing with the main transmission gear is installed on the seed wheel.

[0018] Through the above technical solution, the transmission form of gear meshing is adopted, with high space utilization rate and outstanding transmission smoothness.

[0019] Preferably, two opposite side walls of the drum are a first side wall and a second side wall, the support shaft passes through and is rotatably connected to the first side wall, the support shaft is fixedly connected to the outer wall of the seed discharging cavity housing close to the first side wall, a first fitting is provided on the second side wall, and a second fitting is provided on the side wall of the seed discharging cavity housing; when the drum and the seed discharging cavity housing rotate relatively, the first fitting and the second fitting cooperate with each other to generate a supporting force on the seed discharging cavity housing.

[0020] Through the above technical solution, the seed discharging cavity housing is in a relatively fixed state, and the drum rotates. At this time, there is a first rotation support point between the first side wall of the drum and the support shaft, and a second fitting support point is generated between the second side wall of the drum and the seed discharging cavity housing through the first fitting and the second fitting. The above two support points are respectively located on the left and right sides of the seed discharging cavity housing, and the support stability between the drum and the seed discharging cavity housing is extremely high. During use, it is not easy for the two to be in extrusion contact, and the probability of jamming is greatly reduced.

[0021] Preferably, the first fitting includes a rolling hole opened on the second side wall;

[0022] The second fitting includes a rolling member installed on the side wall of the seed discharging cavity housing, and the rolling member is in rolling contact with the hole wall of the rolling hole.

[0023] Through the above technical solution, when the drum and the seed discharging cavity housing rotate relatively, the rolling member contacts the hole wall of the rolling hole, which not only improves the support stability, but also makes the rolling of the drum more flexible.

[0024] Preferably, rolling grooves are opened on the hole wall of the rolling hole, and the rolling member is fitted in the rolling grooves.

[0025] Through the above technical solution, the rolling member can be restricted to move within the rolling grooves, effectively improving the cooperation stability between the rolling member and the rolling hole.

[0026] Preferably, the rolling member includes rolling blocks, the number of the rolling blocks is more than two, the rolling holes are circular holes, the rolling grooves are located on the arc-shaped hole walls of the rolling holes, and all the rolling blocks are distributed in a circumferential array with the axis of rotation of the drum as the center.

[0027] Through the above technical solution, more than two rolling blocks can increase the effective support points between the drum and the seed metering chamber housing, and improve the support stability between the drum and the seed metering chamber housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the structure of the embodiment Figure 1 ;

[0029] Figure 2 Schematic diagram of the structure of the embodiment Figure 2 ;

[0030] Figure 3 Schematic diagram of the connection among the connecting plate body, the driving gear and the seed wheel;

[0031] Figure 4 Schematic diagram of the overall structure of the embodiment Figure 1 ;

[0032] Figure 5 Schematic diagram of the overall structure of the embodiment Figure 2 ;

[0033] Figure 6 Schematic diagram of the sectional structure of the embodiment.

[0034] Reference numerals: 1, seed metering chamber housing; 2, drum; 21, connecting plate body; 22, split block; 3, support shaft; 4, walking bracket; 5, seed wheel; 6, seed groove; 7, driving gear; 8, main transmission gear; 10, auxiliary transmission gear; 11, driving member; 111, driving rod; 12, boss; 13, jack; 14, reinforcing rib; 15, first side wall; 16, second side wall; 17, first fitting; 171, rolling hole; 172, rolling groove; 18, second fitting; 181, rolling member; 182, rolling block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following further details the specific embodiments of the present invention with reference to the accompanying drawings, so that the technical solutions of the present invention are easier to understand and master.

[0036] A sowing drive structure, see Figure 1 , Figure 2 and Figure 3 , including a seed metering chamber housing 1, a drum 2, a support shaft 3, and a walking bracket 4.

[0037] Among them, the drum 2 includes a connecting plate body 21 located in the middle and a number of splicing blocks 22. The number of the splicing blocks 22 is eight in this embodiment, and the splicing blocks 22 are located around the connecting plate body 21.

[0038] A seed wheel 5 with seed grooves 6 is rotatably connected in the seed metering cavity housing 1. A driving gear 7 is connected to the seed wheel 5. The driving gear 7 is located between the seed metering cavity housing 1 and the drum 2. A driving member 11 is installed on the connecting plate body 21. As the connecting plate body 21 rotates, the driving member 11 cooperates with the driving gear 7 to drive the seed wheel 5 to rotate.

[0039] To adapt to more rotational speeds of the seed wheel 5, a main transmission gear 8 can be connected to the driving gear 7, and a secondary transmission gear 10 for meshing with the main transmission gear 8 is installed on the seed wheel 5. By selecting main transmission gears 8 and secondary transmission gears 10 of different models, the rotational speed of the seed wheel 5 can be ultimately controlled. Of course, other gears can also be further arranged between the main transmission gear 8 and the secondary transmission gear 10 to meet more requirements for transmission ratios.

[0040] The driving member 11 includes a driving rod 111. The connecting plate body 21 is provided with insertion holes 13. The number of the insertion holes 13 provided on the connecting plate body 21 is more than two, and all the insertion holes 13 are arranged in a circumferential array along the rotation center of the connecting plate body 21. The connecting plate body 21 is provided with more than two convex platforms 12, and the insertion holes 13 are correspondingly arranged on the convex platforms 12 one by one. The driving rod 111 is inserted into the insertion holes 13 of the connecting plate body 21, and the driving rod 111 cooperates with the tooth grooves of the driving gear 7 to drive the driving gear 7 to rotate.

[0041] To increase the structural stability of the convex platforms 12, a reinforcing rib 14 is connected between two adjacent convex platforms 12.

[0042] In addition, referring to Figure 4 、 Figure 5 and Figure 6 , the two opposite side walls of the drum 2 are a first side wall 15 and a second side wall 16.

[0043] The seed metering cavity housing 1 is located inside the drum 2. The support shaft 3 is fixedly connected to the outer wall of the seed metering cavity housing 1 close to the first side wall 15. In this embodiment, one end of the support shaft 3 is integrally formed on the outer wall of the seed metering cavity housing 1 close to the first side wall 15. The other end of the support shaft 3 passes through and is rotatably connected to the first side wall 15 and is fixedly connected to the traveling support 4.

[0044] A bearing is preferably installed between the support shaft 3 and the first side wall 15 to improve the rotational flexibility between the two.

[0045] A first fitting member 17 is provided on the second side wall 16, and a second fitting member 18 is provided on the side wall of the seed metering cavity housing 1. When relative rotation occurs between the drum 2 and the seed metering cavity housing 1, the first fitting member 17 and the second fitting member 18 cooperate with each other to generate a supporting force on the seed metering cavity housing 1.

[0046] Among them, the first fitting member 17 includes a rolling hole 171 opened on the second side wall 16. The rolling hole 171 is a circular hole, and the center of the rolling hole 171 is located on the rolling axis of the entire drum 2.

[0047] Among them, the second fitting member 18 includes a rolling member 181 installed on the side wall of the seed metering cavity housing 1. The rolling member 181 includes a rolling block 182, and the rolling block 182 is a cylinder. A rolling groove 172 is opened on the hole wall of the rolling hole 171, and the rolling member 181 is fitted in the rolling groove 172.

[0048] The number of the rolling blocks 182 is more than two. In this embodiment, the number of the rolling blocks 182 shown is three. The rolling groove 172 is located on the arc-shaped hole wall of the rolling hole 171, and all the rolling blocks 182 are arranged in a circumferential array centered on the rotation axis of the drum 2.

[0049] Of course, the above are only typical examples of the present invention. In addition, the present invention can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A seeding drive structure, comprising a seed metering cavity housing (1), a drum (2), a support shaft (3), and a walking bracket (4). The support shaft (3) is fixedly connected to the walking bracket (4). The seed metering cavity housing (1) is located inside the drum (2). The drum (2) includes a connecting plate body (21) in the middle and a plurality of splicing blocks (22). The plurality of splicing blocks (22) are located around the connecting plate body (21). It is characterized in that: The support shaft (3) is connected to the seed metering cavity housing (1). A seed wheel (5) with seed grooves (6) is rotatably connected inside the seed metering cavity housing (1). A driving gear (7) is connected to the seed wheel (5). The driving gear (7) is located between the seed metering cavity housing (1) and the drum (2). A driving member (11) is installed on the connecting plate body (21). As the connecting plate body (21) rotates, the driving member (11) cooperates with the driving gear (7) to drive the seed wheel (5) to rotate.

2. The seeding drive structure according to claim 1, characterized in that: The driving member (11) includes a driving rod (111). A jack (13) is provided on the connecting plate body (21). The driving rod (111) is inserted into the connecting plate body (21). The driving rod (111) cooperates with the tooth grooves of the driving gear (7) to drive the driving gear (7) to rotate.

3. A seeding drive structure according to claim 2, characterized in that: Two or more jacks (13) are provided on the connecting plate body (21). All the jacks (13) are arranged in a circular array along the rotation center of the connecting plate body (21).

4. A seeding drive structure according to claim 3, characterized in that: Two or more bosses (12) are provided on the connecting plate body (21). The jacks (13) are correspondingly arranged on the bosses (12) one by one.

5. A seeding drive structure according to claim 4, characterized in that: A reinforcing rib (14) is connected between two adjacent bosses (12).

6. The sowing drive structure according to claim 1, characterized in that: A main transmission gear (8) is connected to the driving gear (7). A secondary transmission gear (10) for meshing with the main transmission gear (8) is installed on the seed wheel (5).

7. A seeding drive structure according to any one of claims 1-6, characterized in that: Two opposite side walls of the drum (2) are a first side wall (15) and a second side wall (16). The support shaft (3) passes through and is rotatably connected to the first side wall (15). The support shaft (3) is fixedly connected to the outer wall of the seed metering cavity housing (1) close to the first side wall (15). A first fitting (17) is provided on the second side wall (16). A second fitting (18) is provided on the side wall of the seed metering cavity housing (1). When the drum (2) and the seed metering cavity housing (1) rotate relative to each other, the first fitting (17) and the second fitting (18) cooperate with each other to generate a supporting force on the seed metering cavity housing (1).

8. A seeding drive structure according to claim 7, characterized in that: The first fitting (17) includes a rolling hole (171) opened on the second side wall (16). The second fitting (18) includes a rolling member (181) installed on the side wall of the seed metering cavity housing (1). The rolling member (181) is in rolling contact with the hole wall of the rolling hole (171).

9. A seeding drive structure according to claim 8, characterized in that: A rolling groove (172) is opened on the hole wall of the rolling hole (171). The rolling member (181) is fitted in the rolling groove (172).

10. A seeding drive structure according to claim 9, characterized in that: The rolling member (181) includes rolling blocks (182). The number of the rolling blocks (182) is two or more. The rolling hole (171) is a circular hole. The rolling groove (172) is located on the arc-shaped hole wall of the rolling hole (171). All the rolling blocks (182) are distributed in a circular array with the rotation axis of the drum (2) as the center.

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