Seeding machine and shaft connecting structure thereof

Abstract

The utility model provides a seeder and a shaft connecting structure thereof. 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 two opposite side walls of the roller are the first side wall and the second side wall, the supporting shaft penetrates through and is rotationally connected to the first side wall, and the supporting shaft penetrates through and is rotationally connected to the second side wall. The supporting shaft is fixedly connected to the shell wall, close to the first side wall, of the seed metering cavity shell, a first matching part is arranged on the second side wall, and a second matching part is arranged on the side wall of the seed metering cavity shell; when the roller and the seed-metering cavity shell rotate relatively, the first matching piece and the second matching piece are matched with each other to generate supporting force on the seed-metering cavity shell. The support stability between the roller and the shell of the seed metering cavity is extremely high, and when in use, the roller and the shell of the seed metering cavity are not easy to extrude and contact, so that the probability of clamping stagnation is greatly reduced.

Description

Technical Field

[0001] The utility model relates to a seeder, and particularly to a seeder and a shaft connection structure thereof. Background Art

[0002] The existing seeder structure is a duckbill seeder, such as a Chinese invention patent with publication number CN113767734A. Its main structure includes a seeder walking bracket, a seed-taking device support drive shaft, a seed metering cavity housing, and a drum. One end of the seed-taking device support drive shaft is rotatably connected to the seeder walking bracket. The seed-taking device support drive shaft and the drum are coaxially fixed together. The seed metering cavity housing is fixedly connected to the seeder walking bracket. During actual use, the operator holds and pushes the seeder walking bracket by hand. The outer cylindrical wall of the drum contacts the ground, and the drum rotates circumferentially relative to the seed metering cavity housing. The entire drum rotates on the seeder walking bracket through the seed-taking device support drive shaft.

[0003] Although the above-mentioned type of seeder has basic seeding capabilities, during actual use, the drum is connected to the seed-taking device support drive shaft, the seed metering cavity housing is fixedly connected to the seeder walking bracket, and the support drive shaft is only rotatably connected to the seeder walking bracket. That is, the drum only exists at the above-mentioned rotation connection points through the support drive shaft. Such a structure causes the support drive shaft and the drum to easily shake, and the distance between the seed metering cavity housing and the drum will also change accordingly. Seriously, the seed metering cavity housing and the drum will come into extrusion contact and get stuck. Summary of the Utility Model

[0004] In view of this, the first object of the present utility model is to provide a shaft connection structure, in which the drum and the seed metering cavity housing have high use stability, and it is not easy for them to come into extrusion contact, and the probability of getting stuck is greatly reduced.

[0005] In order to solve the above technical problems, the technical solution of the present utility model is as follows:

[0006] A shaft connection 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 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 metering 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 metering cavity housing. When the drum and the seed metering cavity housing rotate relative to each other, the first fitting and the second fitting cooperate with each other to generate a supporting force on the seed metering cavity housing.

[0007] Through the above technical solution, the seed metering 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 mating support point is generated between the second side wall of the drum and the seed metering cavity housing through the first mating member and the second mating member. The above two support points are respectively located on the left and right sides of the seed metering cavity housing. The support stability between the drum and the seed metering cavity housing is extremely high. During use, it is not easy for the two to come into extrusion contact, and the probability of jamming is greatly reduced.

[0008] Preferably, the first mating member includes a rolling hole opened on the second side wall;

[0009] The second mating member includes a rolling member installed on the side wall of the seed metering cavity housing, and the rolling member is in rolling contact with the inner wall of the rolling hole.

[0010] Through the above technical solution, when relative rolling occurs between the drum and the seed metering cavity housing, the rolling member contacts the inner wall of the rolling hole, which not only improves the support stability, but also makes the rolling of the drum more flexible.

[0011] Preferably, a rolling groove is opened on the inner wall of the rolling hole, and the rolling member is fitted in the rolling groove.

[0012] Through the above technical solution, the rolling member can be restricted to move within the rolling groove, effectively improving the mating stability between the rolling member and the rolling hole.

[0013] Preferably, the rolling member includes rolling blocks, the number of the rolling blocks is more than two, the rolling hole is a circular hole, the rolling groove is located on the arc-shaped inner wall of the rolling hole, and all the rolling blocks are arranged in a circumferential array centered on the rotation axis of the drum.

[0014] Through the above technical solution, more than two rolling blocks can increase the effective support points between the drum and the seed metering cavity housing, and improve the support stability between the drum and the seed metering cavity housing.

[0015] Preferably, the walking bracket includes a first bracket and a second bracket. The first bracket is fixedly connected to the end of the support shaft close to the first side wall, and the second bracket is fixedly connected to the outer wall of the seed metering cavity housing close to the second side wall.

[0016] Through the above technical solution, the first bracket and the second bracket are respectively located at the first side wall and the second side wall of the drum. When the user applies force to the walking bracket, the entire seeder can be pushed to move more stably.

[0017] Preferably, it further includes a seed storage box which is fixedly installed on the outer wall of the seed metering cavity housing close to the second side wall. The interior of the seed storage box communicates with the inner cavity of the seed metering cavity housing, and the second bracket is fixedly connected to the seed metering cavity housing.

[0018] Through the above technical solution, the outer side wall position of the seed metering cavity housing is fully utilized, making the structure of the entire seeder more compact.

[0019] Preferably, the drum includes a connecting plate body in the middle and a number of split blocks, and the number of split blocks is located around the connecting plate body;

[0020] Each split block is provided with a splicing groove, and the outer edge of the connecting plate body is inserted into the splicing groove;

[0021] It further includes a clamping part. Flanges are provided on the first side wall of each split block, and the clamping part simultaneously clamps the flanges on all split blocks, so as to stably connect the split blocks and the connecting plate body.

[0022] Through the above technical solution, when it is necessary to install the connecting plate body and a number of split blocks together, the splicing grooves on a number of split blocks can be inserted into the outer edge of the connecting plate body one by one. At this time, a preliminary pre - fixation will be generated between the split blocks and the connecting plate body; then, the clamping part is simultaneously clamped on the flanges of all split blocks, and all split blocks are simultaneously subjected to a pulling force towards the center side of the connecting plate body, and a stable connection effect can be generated between the split blocks and the connecting plate body; conversely, after the clamping part is removed from the flanges, the split blocks can be easily disassembled from the connecting plate body, and the overall disassembly and assembly convenience is relatively high.

[0023] Preferably, the clamping part includes a clamping wire and a clamping piece. The clamping wire clamps the flange, and both ends of the clamping wire are connecting ends, and the clamping piece is used to pull the distance between the two connecting ends closer to each other.

[0024] Through the above technical solution, the clamping wire is sleeved on the flange, and then the distance between the two connecting ends of the two clamping wires is pulled closer by the clamping piece, and the clamping wire can tighten all the flanges, and the locking stability is high.

[0025] Preferably, the drum includes a connecting plate body in the middle and a number of split blocks, and the number of split blocks is located around the connecting plate body;

[0026] The support shaft is connected to the seed metering cavity housing. A seed wheel with seed grooves is rotatably connected in the seed metering cavity housing. A driving gear is connected to the seed wheel, and 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.

[0027] Through the above technical solution, during normal use, the drum formed by the connecting plate body and the splicing 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, and 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 splicing 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 splicing 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, which is convenient for installation.

[0028] The second object of the present invention is to provide a seeder with high use stability.

[0029] In order to solve the above technical problems, the technical solution of the present invention is: a seeder, including the shaft connection structure as described above.

[0030] Through the above technical solution, by improving the structure between the drum and the seed discharging cavity housing, the actual use stability of the entire seeder is extremely high. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0032] Figure 2 Schematic diagram of the overall structure of Embodiment 1 Figure 2 ;

[0033] Figure 3 Schematic cross-sectional structure diagram of Embodiment 1;

[0034] Figure 4 Schematic diagram of the structure of Embodiment 2 Figure 1 ;

[0035] Figure 5 Schematic diagram of the structure of Embodiment 2 Figure 2 ;

[0036] Figure 6 Front view structure diagram of Embodiment 2;

[0037] Figure 7 Rear view structure diagram of Embodiment 2;

[0038] Figure 8 Schematic diagram of the partial structure of Embodiment 2 Figure 1 ;

[0039] Figure 9 Schematic diagram of the partial structure of Embodiment 2 Figure 2 ;

[0040] Figure 10Structural schematic diagram of Embodiment III Figure 1 ;

[0041] Figure 11 Structural schematic diagram of Embodiment III Figure 2 ;

[0042] Figure 12 Schematic installation structure diagram of the connecting plate body, driving gear, and seed wheel in Embodiment III

[0043] Reference numerals: 1, seed metering cavity housing; 2, drum; 21, first side wall; 22, second side wall; 3, support shaft; 4, walking bracket; 41, first bracket; 42, second bracket; 5, first fitting; 6, second fitting; 7, rolling hole; 8, rolling member; 81, rolling block; 9, rolling groove; 10, seed storage box

[0044] 11, connecting plate body; 12, split block; 15, splicing groove; 16, clamping portion; 17, clamping wire; 18, clamping member; 19, flanging; 20, connecting end; 23, twisting head; 24, clamping bolt; 25, clamping nut; 26, positioning rib; 27, connecting wall; 28, positioning groove; 29, positioning boss; 30, abutting table

[0045] 31, seed wheel; 32, seed groove; 33, driving member; 34, driving rod; 35, jack; 36, boss; 37, reinforcing rib; 38, main transmission gear; 39, auxiliary transmission gear; 40, driving gear Detailed implementation manners

[0046] The following further details the specific implementation manners of the present utility model in conjunction with the attached drawings, so that the technical solutions of the present utility model are easier to understand and master Embodiment

[0047] A shaft connection structure, see Figure 1 、 Figure 2 and Figure 3 , including a seed metering cavity housing 1, a drum 2, a support shaft 3, and a walking bracket 4

[0048] The two opposite side walls of the drum 2 are the first side wall 21 and the second side wall 22

[0049] 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 21. 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 21. The other end of the support shaft 3 passes through and is rotatably connected to the first side wall 21 and is fixedly connected to the walking bracket 4

[0050] It is preferable to install a bearing between the support shaft 3 and the first side wall 21 to improve the rotational flexibility between the two.

[0051] A first fitting 5 is provided on the second side wall 22, and a second fitting 6 is provided on the side wall of the seed metering cavity housing 1; when the drum 2 rotates relative to the seed metering cavity housing 1, the first fitting 5 and the second fitting 6 cooperate with each other to generate a supporting force on the seed metering cavity housing 1.

[0052] Among them, the first fitting 5 includes a rolling hole 7 opened on the second side wall 22. The rolling hole 7 is a circular hole, and the center of the rolling hole 7 is located on the rolling axis of the entire drum 2.

[0053] Among them, the second fitting 6 includes a rolling member 8 installed on the side wall of the seed metering cavity housing 1. The rolling member 8 includes a rolling block 81, and the rolling block 81 is a cylinder. A rolling groove 9 is opened on the hole wall of the rolling hole 7, and the rolling member 8 is fitted in the rolling groove 9.

[0054] The number of the rolling blocks 81 is more than two, and the number of the rolling blocks 81 shown in this embodiment is three. The rolling groove 9 is located on the arc-shaped hole wall of the rolling hole 7, and all the rolling blocks 81 are circumferentially arrayed around the rotation axis of the drum 2.

[0055] The walking bracket 4 includes a first bracket 41 and a second bracket 42. The first bracket 41 is fixedly connected to the end of the support shaft 3 close to the first side wall 21, and the second bracket 42 is fixedly connected to the outer wall of the seed metering cavity housing 1 close to the second side wall 22.

[0056] A seed storage box 10 is further provided. The seed storage box 10 is fixedly installed on the outer wall of the seed metering cavity housing 1 close to the second side wall 22. The inside of the seed storage box 10 communicates with the inner cavity of the seed metering cavity housing 1, and the second bracket 42 is fixedly connected to the seed metering cavity housing 1.

[0057] Embodiment 2: On the basis of the structure of Embodiment 1, the following technical features are added:

[0058] See Figures 3 - 9 , the drum 2 includes a connecting plate body 11 in the middle and a plurality of splicing blocks 12. The plurality of splicing blocks 12 are located around the connecting plate body 11. The two opposite side walls of the drum 2 are the first side wall 21 and the second side wall 22;

[0059] A splicing groove 15 is provided in each of the splicing blocks 12, and the outer edge of the connecting plate body 11 is inserted into the splicing groove 15;

[0060] The assembly also includes a clamping portion 16 . A flange 19 is provided on the first side wall 21 of each of the blocks 12 . The clamping portion 16 is simultaneously buckled and pulled on the flanges 19 on all the blocks 12 , thereby stably connecting the blocks 12 to the connecting plate body 11 .

[0061] The clamping portion 16 includes a clamping wire 17 and a clamping member 18. The clamping wire 17 is buckled and pulled on the flange 19. Both ends of the clamping wire 17 are connecting ends 20. The clamping member 18 is used to pull the two connecting ends 20 closer to each other.

[0062] Among them, the connecting end 20 includes a twisting head 23 formed by bending and twisting the end of the clamping wire 17, and the clamping member 18 includes a clamping bolt 24 and a clamping nut 25. The clamping bolt 24 passes through the two twisting heads 23, and the clamping nut 25 is threadedly connected to the clamping bolt 24.

[0063] Therefore, the twisting head 23 and the clamping wire 17 are an integrated structure with high structural stability, without the need for other additional accessories, and effectively controlling the overall manufacturing cost.

[0064] A positioning rib 26 is provided on the side wall of the connecting plate body 11 close to the clamping member 18 , a connecting wall 27 is connected between the block 12 and the flange 19 , and a positioning groove 28 is provided on the connecting wall 27 to be engaged with the positioning rib 26 .

[0065] Therefore, when the block 12 is installed on the connecting plate 11 , the positioning ribs 26 cooperate with the positioning grooves 28 to further enhance the connection stability between the block 12 and the connecting plate 11 .

[0066] Among them, a connecting wall 27 is connected between the puzzle block 12 and the flange 19, a positioning boss 3629 is provided in the puzzle block 12, and the splicing groove 15 is located between the positioning boss 3629 and the connecting wall 27. A resistance platform 30 is provided on the side wall of the connecting plate body 11 facing away from the clamping member 18, and the resistance platform 30 is against the positioning boss 3629.

[0067] Therefore, when the puzzle block 12 is installed on the connecting plate body 11, the connecting plate body 11 is clamped between the positioning boss 3629 and the connecting wall 27. In addition, the abutment platform 30 abuts against the side wall of the positioning boss 3629, so the installation accuracy is higher. The abutment platform 30 may also enhance the structural strength of the side wall of the connecting plate body 11, and the connection stability between the puzzle block 12 and the connecting plate body 11 is higher.

[0068] The flange 19 is also disposed on the second side wall 22 of each of the puzzle blocks 12 , and the clamping portion 16 is also disposed on the flange 19 on the second side wall 22 . The clamping portion 16 is simultaneously buckled and pulled on the flange 19 on the second side wall 22 .

[0069] Therefore, the first side wall 21 and the second side wall 22 of the entire drum 2 both adopt the structural form in which the flanging 19 cooperates with the clamping part 16, and the structural strength of the drum 2 is higher.

[0070] Embodiment 3: On the basis of the structure of Embodiment 1 or Embodiment 2, the following technical features are added: Refer to Figures 10 - 12 , the drum 2 includes a connecting plate body 11 located in the middle and a plurality of split blocks 12, and a plurality of the split blocks 12 are located around the connecting plate body 11;

[0071] The support shaft 3 is connected to the seed metering cavity housing 1. A seed wheel 31 with seed grooves 32 is rotatably connected in the seed metering cavity housing 1. A driving gear 40 is connected to the seed wheel 31. The driving gear 40 is located between the seed metering cavity housing 1 and the drum 2. A driving member 33 is installed on the connecting plate body 11. As the connecting plate body 11 rotates, the driving member 33 cooperates with the driving gear 40, thereby driving the seed wheel 31 to rotate.

[0072] Among them, the driving member 33 includes a driving rod 34. The connecting plate body 11 is provided with an insertion hole 35. The driving rod 34 is inserted into the connecting plate body 11. The driving rod 34 cooperates with the tooth grooves of the driving gear 40, thereby driving the driving gear 40 to rotate.

[0073] Therefore, only need to insert the driving rod 34 into the insertion hole 35. As the connecting plate body 11 rotates, the driving rod 34 will also move accordingly. The driving rod 34 cooperates with the tooth grooves of the driving gear 40, and the driving gear 40 can rotate, and the driving stability is high; in addition, as the use time becomes longer, if the driving rod 34 is worn, the driving rod 34 is pulled out of the insertion hole 35, and a new driving rod 34 is installed, and subsequent maintenance is convenient.

[0074] Among them, two or more insertion holes 35 are provided on the connecting plate body 11, and all the insertion holes 35 are arranged in a circumferential array along the rotation center of the connecting plate body 11.

[0075] Therefore, according to the actual required rotation speed of the seed wheel 31, the driving rod 34 can be inserted into the insertion holes 35 with appropriate numbers and appropriate positions.

[0076] Among them, two or more bosses 36 are provided on the connecting plate body 11, and the insertion holes 35 are correspondingly arranged on the bosses 36 one by one.

[0077] Therefore, the overall thickness of the connecting plate body 11 can be controlled, and the connection stability of the driving rod 34 is determined according to the structural strength of the provided bosses 36.

[0078] Among them, a reinforcing rib 37 is connected between two adjacent bosses 36.

[0079] Therefore, the structural strength of the boss 36 can be strengthened, and the installation stability of the driving rod 34 is further improved.

[0080] Wherein, a main transmission gear 38 is connected to the driving gear 40, and a secondary transmission gear 39 for meshing with the main transmission gear 38 is installed on the wheel 31.

[0081] Therefore, the transmission form of gear meshing is adopted, with high space utilization rate and outstanding transmission stability.

[0082] Of course, the above are only typical examples of the present utility model. In addition, the present utility model can also have many other specific implementation manners. Any technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection required by the present utility model.

Claims

1. An axle connection structure, comprising a metering chamber housing (1), a drum (2), a support shaft (3), and a walking bracket (4), wherein the support shaft (3) is fixedly connected to the walking bracket (4), and the metering chamber housing (1) is located inside the drum (2), and is characterized in that: Two opposite side walls of the drum (2) are a first side wall (21) and a second side wall (22). The support shaft (3) passes through and is rotatably connected to the first side wall (21). The support shaft (3) is fixedly connected to the outer wall of the seed metering cavity housing (1) close to the first side wall (21). A first fitting (5) is provided on the second side wall (22), and a second fitting (6) 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 (5) and the second fitting (6) cooperate with each other to generate a supporting force on the seed metering cavity housing (1).

2. The shaft connection structure according to claim 1, characterized in that: The first fitting (5) includes a rolling hole (7) opened on the second side wall (22). The second fitting (6) includes a rolling member (8) installed on the side wall of the seed metering cavity housing (1). The rolling member (8) is in rolling contact with the hole wall of the rolling hole (7).

3. The shaft connection structure according to claim 2, wherein: A rolling groove (9) is opened on the hole wall of the rolling hole (7), and the rolling member (8) is fitted in the rolling groove (9).

4. The shaft connection structure according to claim 3, characterized in that: The rolling member (8) includes rolling blocks (81). The number of the rolling blocks (81) is more than two. The rolling hole (7) is a circular hole. The rolling groove (9) is located on the arc-shaped hole wall of the rolling hole (7). All the rolling blocks (81) are arranged in a circumferential array centered on the rotation axis of the drum (2).

5. The shaft connection structure according to claim 1, characterized in that: The walking bracket (4) includes a first bracket (41) and a second bracket (42). The first bracket (41) is fixedly connected to the end of the support shaft (3) close to the first side wall (21), and the second bracket (42) is fixedly connected to the outer wall of the seed metering cavity housing (1) close to the second side wall (22).

6. The shaft connection structure according to claim 5, wherein: It further includes a seed storage box (10). The seed storage box (10) is fixedly installed on the outer wall of the seed metering cavity housing (1) close to the second side wall (22). The interior of the seed storage box (10) communicates with the inner cavity of the seed metering cavity housing (1). The second bracket (42) is fixedly connected to the seed metering cavity housing (1).

7. The shaft connection structure according to claim 1, characterized in that: The drum (2) includes a connecting plate body (11) in the middle and a plurality of split blocks (12). The plurality of split blocks (12) are located around the connecting plate body (11). Each split block (12) is provided with a splicing groove (15), and the outer edge of the connecting plate body (11) is inserted into the splicing groove (15). It further includes a clamping portion (16). A flange (19) is provided on the first side wall (21) of each split block (12). The clamping portion (16) simultaneously clamps the flanges (19) on all the split blocks (12), so as to stably connect the split blocks (12) and the connecting plate body (11).

8. The shaft connection structure according to claim 7, characterized in that: The clamping part (16) includes a clamping wire (17) and a clamping member (18). The clamping wire (17) is buckled on the flanging (19). Both ends of the clamping wire (17) are connecting ends (20). The clamping member (18) is used to pull the distances between the two connecting ends (20) closer to each other.

9. The shaft connection structure according to claim 1, characterized in that: The drum (2) includes a connecting plate body (11) located in the middle and a plurality of split blocks (12). The plurality of split blocks (12) are located around the connecting plate body (11); The support shaft (3) is connected to the seed metering cavity housing (1). A seed wheel (31) with a seed groove (32) is rotatably connected in the seed metering cavity housing (1). A driving gear (40) is connected to the seed wheel (31). The driving gear (40) is located between the seed metering cavity housing (1) and the drum (2). A driving member (33) is installed on the connecting plate body (11). As the connecting plate body (11) rotates, the driving member (33) cooperates with the driving gear (40) to drive the seed wheel (31) to rotate.

10. A seeder, characterized in that: It includes the shaft connection structure according to any one of claims 1-9.

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