Throwing device for fertilizer distributor

Abstract

The utility model discloses a scattering device for a fertilizer spreader, which comprises a scattering frame, the bottom of the scattering frame is rotatably provided with a scattering basin frame through an angle adjusting mechanism, the scattering basin frame is symmetrically and rotatably provided with scattering discs, and a scattering linkage mechanism is arranged between the bottom of the scattering basin frame and one side of the scattering frame. The throwing linkage mechanism is connected with the two throwing discs at the same time, a fertilizer discharging auger shaft matched with the throwing linkage mechanism is rotationally arranged on the inner side of the throwing frame, and a throwing driving mechanism matched with the fertilizer discharging auger shaft is further arranged on the other side of the throwing frame. According to the invention, the scattering amplitude can be improved, and the scattering amplitude can reach 10 meters; in addition, the scattering angle can be adjusted, so that the operation efficiency of fertilizer scattering can be effectively improved.

Description

Technical Field

[0001] This application relates to the technical field of agricultural fertilizer spreading machinery and equipment, and in particular to a spreading device for a fertilizer spreader. Background Technology

[0002] my country is currently a major agricultural country, but its level of mechanization is not high. Most areas still use manual fertilization, which is inefficient and labor-intensive. The amount of fertilizer applied cannot be effectively controlled during the fertilization process, which in turn affects crop yield.

[0003] With the continuous advancement and development of technology, the emergence of automatic fertilizer spreaders has not only improved fertilization efficiency but also reduced labor intensity, thereby increasing operational efficiency. However, in related technologies, fertilizer spreaders have a small spreading range and the spreading angle cannot be adjusted, resulting in low operational efficiency. Utility Model Content

[0004] The purpose of this application is to provide a spreading device for a fertilizer spreader, so as to solve the problem that the spreading range of the fertilizer spreader is small and the spreading angle cannot be adjusted, resulting in low operating efficiency in the related technology.

[0005] The fertilizer spreading device provided in this application adopts the following technical solution:

[0006] A fertilizer spreading device for a fertilizer spreader includes a spreading frame. A spreading basin is rotatably mounted on the bottom of the spreading frame via an angle adjustment mechanism. Spreading discs are symmetrically rotatably mounted on the spreading basin. A spreading linkage mechanism is provided between the bottom of the spreading basin and one side of the spreading frame. The spreading linkage mechanism is simultaneously connected to both spreading discs. A fertilizer discharge auger shaft that cooperates with the spreading linkage mechanism is rotatably mounted on the inner side of the spreading frame. A spreading drive mechanism that cooperates with the fertilizer discharge auger shaft is also provided on the other side of the spreading frame.

[0007] Furthermore, the angle adjustment mechanism includes a rotating rod rotatably mounted on one side of the bottom of the spreading frame. One end of the rotating rod is connected to one side of the spreading basin frame, and an adjusting rod is hinged to the other side of the spreading basin frame. One end of the adjusting rod has an adjusting waist-shaped hole. A clamping plate is provided on the outer side of the spreading frame, and a clamping limiting shaft that cooperates with the adjusting waist-shaped hole is provided on the clamping plate. A pull rod post is provided on the inner side of the adjusting rod, and an adjusting limiting rod frame is rotatably mounted on the pull rod post. One end of the adjusting limiting rod frame has a plurality of clamping holes symmetrically provided that cooperate with the clamping limiting shaft. One end of the adjusting limiting rod frame is also provided with a manual pull rod, and the other end is connected to a retaining spring. One end of the retaining spring is connected to one end of the adjusting rod.

[0008] Furthermore, the spreading linkage mechanism includes a spreading linkage shaft rotatably disposed between the spreading frame and the spreading disc frame. Two driving bevel gears are provided on the spreading linkage shaft, and driven bevel gears that mesh with the two driving bevel gears are provided at the bottom of the two spreading discs respectively. A linkage component is also provided at one end of the spreading linkage shaft and one end of the fertilizer discharge auger shaft.

[0009] Furthermore, the linkage component includes a spreading drive sprocket disposed on one end of the spreading linkage shaft, a fertilizer discharge auger sprocket disposed on one end of the fertilizer discharge auger shaft, a spreading drive chain wound between the fertilizer discharge auger sprocket and the spreading drive sprocket, and an adjusting plate disposed on the outer side of the spreading frame via an adjusting locking component, and an adjusting tension wheel disposed on the adjusting plate that abuts against the spreading drive chain.

[0010] Furthermore, the spreading drive mechanism includes a support plate frame disposed on one side of the spreading frame. A fertilizer discharge motor is disposed on the inner side of the support plate frame, and a fertilizer discharge motor sprocket is disposed at the output end of the fertilizer discharge motor. A rotating shaft is rotatably disposed on the outer side of the support plate frame. A first output diverter sprocket and a second output diverter sprocket are sequentially disposed on the rotating shaft. A fertilizer discharge motor output chain is wound between the first output diverter sprocket and the fertilizer discharge motor sprocket. A second fertilizer discharge auger sprocket is disposed at the other end of the fertilizer discharge auger shaft, and a power drive chain is wound between the second fertilizer discharge auger sprocket and the second output diverter sprocket.

[0011] Furthermore, a tension sprocket that meshes with the output chain of the fertilizer discharge motor is rotatably provided on the outer side of the bearing plate frame, and an adjustment plate is also provided on the outer side of the bearing plate frame via an adjustment locking element. An adjustment tension wheel that abuts against the power drive chain is rotatably provided on the adjustment plate.

[0012] Furthermore, symmetrically arranged on both sides of the scattering basin frame are scattering guide mechanisms. The scattering guide mechanism includes a scattering guide plate hinged to one side of the scattering basin frame. An adjusting strip is provided on one side of the scattering basin frame by fasteners, and an adjusting element is provided between the adjusting strip and the scattering guide plate.

[0013] Furthermore, a fertilizer discharge auger is provided on the fertilizer discharge auger shaft.

[0014] Compared with the prior art, the beneficial effects of this application are as follows:

[0015] By setting up a spreading structure that integrates a spreading frame, an angle adjustment mechanism, a spreading basin frame, a spreading disc, a spreading linkage mechanism, a fertilizer discharge auger shaft, and a spreading drive mechanism, not only can the spreading range be increased to 10 meters, but the spreading angle can also be adjusted, thereby effectively improving the efficiency of fertilizer spreading operations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the spreading device for the fertilizer spreader in the embodiments of this application.

[0017] Figure 2 yes Figure 1 A bottom view.

[0018] Figure 3 This is a schematic diagram of the angle adjustment mechanism in an embodiment of this application.

[0019] Figure 4 This is a schematic diagram of the structure of the throwing guide mechanism in an embodiment of this application.

[0020] Figure 5 yes Figure 1 Rear view.

[0021] Figure 6 yes Figure 1 The right view.

[0022] Figure 7 This is a schematic diagram of the structure of the scattering drive mechanism in an embodiment of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Spreading frame; 2. Spreading basin frame; 21. Spreading disc; 22. Driven bevel gear; 3. Manure auger shaft; 31. Manure auger; 32. Manure auger sprocket one; 33. Manure auger sprocket two; 4. Angle adjustment mechanism; 41. Rotating rod; 42. Adjusting pull rod; 421. Adjusting waist-shaped hole; 422. Pull rod column; 43. Clamping plate; 44. Clamping limit shaft; 45. Adjusting limit rod frame; 451. Clamping hole; 46. Manual pull rod; 47. Holding spring; 5. Spreading guide mechanism; 51. Spreading guide plate; 52. Adjusting strip plate; 521. Adjusting strip hole; 53. Fastening block; 54. Fastening bolt; 55. 56. Fastening nut; 57. Adjusting block; 58. Torx bolt; 6. Adjusting nut; 7. Spreading linkage mechanism; 61. Spreading linkage shaft; 611. Driving bevel gear; 612. Spreading drive sprocket; 62. Spreading drive chain; 63. Adjusting tension wheel one; 7. Spreading drive mechanism; 71. Bearing plate frame; 72. Fertilizer discharge motor; 721. Fertilizer discharge motor sprocket; 73. Rotating shaft; 731. First output diverter sprocket; 732. Second output diverter sprocket; 74. Fertilizer discharge motor output chain; 75. Power drive chain; 76. Speed ​​regulating ratchet structure; 77. Ratchet transmission structure; 78. Tensioning sprocket; 8. Adjusting tension wheel two. Detailed Implementation

[0025] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0026] This application discloses a spreading device for a fertilizer spreader, referring to... Figure 1 and Figure 2 In this embodiment, the spreading device includes a spreading frame 1, a spreading basin frame 2, an angle adjustment mechanism 4, a spreading disc 21, a spreading linkage mechanism 6, a fertilizer discharge auger shaft 3, and a spreading drive mechanism 7. The spreading frame 1 is installed on the rear side of the fertilizer spreader body; the spreading basin frame 2 is rotatably mounted on the bottom of the spreading frame 1 via the angle adjustment mechanism 4; two spreading discs 21 are provided, each symmetrically mounted on the spreading basin frame 2 via bearing seats, and the two spreading discs 21 rotate in opposite directions. Thus, the angle adjustment mechanism 4 effectively adjusts the vertical angle of the fertilizer spreading on the two spreading discs 21 on the spreading basin frame 2.

[0027] Specifically, refer to Figure 1 and Figure 3 In this embodiment, the angle adjustment mechanism 4 includes a rotating rod 41, an adjusting pull rod 42, a clamping plate 43, a clamping limit shaft 44, a pull rod column 422, an adjusting limit rod frame 45, a clamping hole 451, a manual pull rod 46, and a retaining spring 47. The rotating rod 41 is rotatably mounted on one side of the bottom of the spreading frame 1, and one end of the rotating rod 41 is connected to one side of the spreading basin frame 2. One end of the adjusting rod 42 is hinged to the bottom of the spreading basin frame 2 on the side away from the rotating rod 41. The clamping plate 43 is installed on the outside of the spreading frame 1. The clamping limiting shaft 44 is installed on the clamping plate 43, and an adjusting waist-shaped hole 421 is provided on the other end of the adjusting rod 42. The clamping limiting shaft 44 and the adjusting waist-shaped hole 421 cooperate with each other, so that the clamping limiting shaft 44 passes through the adjusting waist-shaped hole 421 and passes through the adjusting rod 42 to slide and limit the adjusting rod 42, so that the adjusting rod 42 moves on the clamping limiting shaft 44 through the adjusting waist-shaped hole 421.

[0028] Meanwhile, the pull rod column 422 is installed on the inner side of the adjusting pull rod 42; the adjusting limit rod bracket 45 is rotatably installed on the pull rod column 422, and a plurality of locking holes 451 are symmetrically opened on one end of the adjusting limit rod bracket 45. The mutually symmetrical locking holes 451 cooperate with the locking limit shaft 44, and the locking holes 451 correspond to the adjusting waist-shaped hole 421; the manual pull rod 46 is installed on the outer side of the adjusting limit rod bracket 45 near the locking holes 451; one end of the retaining spring 47 is connected to the end of the adjusting limit rod bracket 45 away from the manual pull rod 46, and the other end of the retaining spring 47 is connected to the end of the adjusting pull rod 42 away from the adjusting waist-shaped hole 421.

[0029] When the angle of the spreading basin 2 needs to be adjusted, simply pull the manual lever 46 to lock the locking holes 451 at different positions on the adjusting limit rod 45 into lock with the locking limit shaft 44. This allows the adjusting lever 42 to be adjusted up and down under the action of the adjusting waist-shaped hole 421. Then, with the rotating rod 41 as the pivot, the adjusting lever 42 can drive the spreading basin 2 to rotate back and forth, thereby effectively adjusting the up and down angle of the fertilizer spreading on the two spreading discs 21.

[0030] Better, refer to Figure 1 and Figure 4 In this embodiment, symmetrical spreading guide mechanisms 5 are also provided on both sides of the spreading frame 2. These two spreading guide mechanisms 5 can effectively adjust the angle and direction of the fertilizer spreading. Specifically, the spreading guide mechanism 5 includes a spreading guide plate 51, an adjusting strip 52, fasteners, and adjusting components. One side of the spreading guide plate 51 is hinged to one side of the spreading frame 2; one end of the adjusting strip 52 is installed on one side of the spreading frame 2 via fasteners, and the other end of the adjusting strip 52 is installed on one side of the spreading guide plate 51 via adjusting components. Thus, through the coordinated arrangement of the adjusting strip 52, fasteners, and adjusting components, the angle and position of the spreading guide plate 51 can be effectively adjusted.

[0031] More specifically, the fastener includes a fastening block 53 installed on one side of the spraying basin frame 2. The fastening block 53 has a fastening hole 1, and the adjusting strip 52 has a fastening hole 2 at one end. Fastening bolts 54 are inserted into both the fastening hole 1 and the fastening hole 2. Fastening nuts 55 are threaded onto the fastening bolts 54. In this way, the structure of the fastening bolts 54 and the fastening nuts 55 working together can securely install one end of the adjusting strip 52 onto the fastening block 53.

[0032] More specifically, the adjusting component includes an adjusting block 56 installed on one side of the throwing guide plate 51, the adjusting block 56 having an adjusting hole, and the other end of the adjusting strip plate 52 having an adjusting strip hole 521. Both the adjusting strip hole 521 and the adjusting hole are fitted with a Phillips head bolt 57, and an adjusting nut 58 is threaded onto the Phillips head bolt 57. In this way, through the structure of the Phillips head bolt 57 and the adjusting nut 58 cooperating with each other, the other end of the adjusting strip plate 52 can be securely installed on the throwing guide plate 51.

[0033] By loosening the plum blossom knob bolt 57 and adjusting nut 58, and by loosening the fastening bolt 54 and fastening nut 55, the angle of the spreading guide plate 51 can be adjusted to control the angle and direction of fertilizer spreading.

[0034] Additionally, refer toFigure 1 and Figure 2 In this embodiment, the spreading linkage mechanism 6 is located between the bottom of the spreading basin frame 2 and one side of the spreading frame 1, and the spreading linkage mechanism 6 is simultaneously connected to both spreading discs 21; the fertilizer auger shaft 3 is rotatably installed on the inner side of the spreading frame 1; the spreading drive mechanism 7 is located on the other side of the spreading frame 1, with one end of the fertilizer auger shaft 3 connected to the spreading linkage mechanism 6 and the other end connected to the spreading drive mechanism 7; thus, under the starting action of the spreading drive mechanism 7, the fertilizer auger shaft 3 is driven to rotate, which in turn drives the spreading linkage mechanism 6 to start, so as to simultaneously drive both spreading discs 21 to rotate effectively, thereby completing the fertilizer spreading operation.

[0035] Preferably, in this embodiment, a fertilizer discharge auger 31 is also installed on the fertilizer discharge auger shaft 3, and a conveyor belt structure for conveying fertilizer is installed at the bottom of the fertilizer box inside the fertilizer spreader body. The fertilizer discharge auger 31 cooperates with the fertilizer conveyed in the conveyor belt structure. When the fertilizer discharge auger shaft 3 rotates, it can drive the fertilizer discharge auger 31 to rotate accordingly, so that the fertilizer discharge auger 31 can effectively disperse and stir the fertilizer conveyed in the conveyor belt structure, so that the fertilizer is orderly conveyed to the spreading area on the spreading disc 21, thereby realizing the fertilizer spreading operation.

[0036] The structure of the scattering linkage mechanism 6 and the scattering drive mechanism 7 is described in detail below:

[0037] Specifically, refer to Figure 2 and Figure 5 In this embodiment, the scattering linkage mechanism 6 includes a scattering linkage shaft 61, a driving bevel gear 611, a driven bevel gear 22, and a linkage assembly. The scattering linkage shaft 61 is rotatably mounted between the scattering frame 1 and the scattering disc 21 frame. The scattering linkage shaft 61 also serves as a pivot, ensuring effective and stable rotation of the scattering disc 21 frame during adjustment. Furthermore, the scattering linkage shaft 61 is rotatably mounted at the bottom of the scattering disc 21 frame via multiple bearing seats, with one end of the scattering linkage shaft 61 extending beyond the outside of the scattering disc 21 frame to connect to a bearing seat on the outer side of the scattering frame 1.

[0038] There are two driving bevel gears 611, which are mounted on the spreading linkage shaft 61. There are also two driven bevel gears 22, which are mounted on the bottom of the two spreading discs 21 respectively, and the two driven bevel gears 22 mesh with the two driving bevel gears 611 respectively. When the angle of the spreading disc 21 is adjusted up or down, the position of the two driven bevel gears 22 will also change accordingly, but it will not affect the meshing connection between the driven bevel gears 22 and the driving bevel gears 611.

[0039] Meanwhile, this linkage component is located between one end of the spreading linkage shaft 61 and one end of the fertilizer discharge auger shaft 3. Through this linkage component, the spreading linkage shaft 61 can rotate simultaneously with the rotation of the fertilizer discharge auger shaft 3. Specifically, refer to... Figure 1 In this embodiment, the linkage assembly includes a spreading drive sprocket 612, a fertilizer discharge auger sprocket 32, a spreading drive chain 62, an adjusting plate, an adjusting locking element, and an adjusting tension wheel 63. The spreading drive sprocket 612 is mounted on the end of the spreading linkage shaft 61 extending beyond the spreading frame 1; the fertilizer discharge auger sprocket 32 ​​is mounted on the end of the fertilizer discharge auger shaft 3 extending beyond the spreading frame 1, and the fertilizer discharge auger sprocket 32 ​​and the spreading drive sprocket 612 are located on the same side; the spreading drive chain 62 is wound between the fertilizer discharge auger sprocket 32 ​​and the spreading drive sprocket 612; when the fertilizer discharge auger shaft 3 rotates, it drives the fertilizer discharge auger sprocket 32 ​​to rotate, and under the action of the spreading drive chain 62 and the spreading drive sprocket 612, it simultaneously drives the spreading linkage shaft 61 to rotate accordingly.

[0040] In addition, in this embodiment, the adjusting plate is installed on the outside of the spreading frame 1 by adjusting the locking member, which is a bolt. The adjusting plate has an adjusting plate hole that cooperates with the bolt. The outside of the spreading frame 1 also has a threaded hole that is threaded to the bolt. In this way, by using the bolt to pass through the adjusting plate hole and screw it into the threaded hole, the adjusting plate can be fixedly installed on the outside of the spreading frame 1.

[0041] Meanwhile, the tensioning wheel 63 is rotatably mounted on the adjusting plate 1, and the tensioning wheel 63 abuts against the outer side of the throwing drive chain 62. When the bolt is loosened, the position of the adjusting plate 1 can be moved by utilizing the hole in the adjusting plate 1, thereby moving the position of the tensioning wheel 63, so that the tensioning wheel 63 can effectively adjust the tension of the throwing drive chain 62.

[0042] Specifically, refer to Figure 6 and Figure 7 In this embodiment, the spreading drive mechanism 7 includes a support plate frame 71, a fertilizer discharge motor 72, a fertilizer discharge motor sprocket 721, a rotating shaft 73, a first output diverter sprocket 731, a second output diverter sprocket 732, a fertilizer discharge motor output chain 74, a second fertilizer discharge auger sprocket 33, and a power drive chain 75. The support plate frame 71 is installed on the side of the spreading frame 1 opposite to the first fertilizer discharge auger sprocket 32; the fertilizer discharge motor 72 is installed on the inner bottom of the support plate frame 71; the fertilizer discharge motor sprocket 721 is installed at the output end of the fertilizer discharge motor 72, and the fertilizer discharge motor sprocket 721 is located on the outer side of the support plate frame 71.

[0043] Meanwhile, the rotating shaft 73 is rotatably mounted on the outside of the support plate frame 71; the first output diverter sprocket 731 and the second output diverter sprocket 732 are sequentially mounted on the rotating shaft 73, with the first output diverter sprocket 731 located between the support plate frame 71 and the second output diverter sprocket 732; the fertilizer discharge motor output chain 74 is wound between the first output diverter sprocket 731 and the fertilizer discharge motor sprocket 721; the second fertilizer discharge auger sprocket 33 is mounted on the end of the fertilizer discharge auger shaft 3 away from the first fertilizer discharge auger sprocket 32; and the power drive chain 75 is wound between the second fertilizer discharge auger sprocket 33 and the second output diverter sprocket 732.

[0044] When the fertilizer discharge motor 72 is started, the output end of the fertilizer discharge motor 72 drives the fertilizer discharge motor sprocket 721 to rotate. Under the linkage of the fertilizer discharge motor output chain 74, the first output diverter sprocket 731 is driven to rotate. The first output diverter sprocket 731 drives the rotating shaft 73 and the second output diverter sprocket 732 to rotate. Then, under the linkage of the power drive chain 75, the second fertilizer discharge auger sprocket 33 is driven to rotate, thereby driving the fertilizer discharge auger shaft 3 to rotate.

[0045] Preferably, in this embodiment, a speed-regulating ratchet structure 76 and a ratchet drive structure 77 are further provided on the support plate frame 71. The speed-regulating ratchet structure 76 is connected to the input end of the conveyor belt structure; the ratchet drive structure 77 cooperates with both the rotating shaft 73 and the speed-regulating ratchet structure 76. Thus, when the rotating shaft 73 rotates, it drives the ratchet drive structure 77 to rotate, which in turn drives the speed-regulating ratchet structure 76 to rotate, thereby providing power to the conveyor belt structure and enabling the orderly conveying of fertilizer.

[0046] Better, refer to Figure 7 In this embodiment, a tension sprocket 78 is rotatably mounted on the outer side of the support plate frame 71. The tension sprocket 78 meshes with the inner side of the fertilizer discharge motor output chain 74 to facilitate the adjustment of the tension of the fertilizer discharge motor output chain 74.

[0047] Meanwhile, an adjusting plate two is also installed on the outside of the bearing plate frame 71 by means of an adjusting locking component two; specifically, the adjusting locking component two is also a bolt, and an adjusting plate hole two that cooperates with the bolt is opened on the adjusting plate two. The outside of the bearing plate frame 71 is also provided with a threaded hole that is threaded to the bolt. In this way, by using the bolt to pass through the adjusting plate hole two and to screw it into the threaded hole, the adjusting plate two can be fixedly installed on the outside of the bearing plate frame 71.

[0048] Meanwhile, an adjusting tension wheel 8 is rotatably mounted on the adjusting plate 2, and the adjusting tension wheel 8 abuts against the outer side of the power drive chain 75. When the bolt is loosened, the position of the adjusting plate 2 can be moved by utilizing the setting of the adjusting plate hole 2, thereby moving the position of the adjusting tension wheel 8, so that the adjusting tension wheel 8 can effectively adjust the tension of the power drive chain 75.

[0049] Therefore, the solution of this application, by setting up a spreading structure in which the spreading frame 1, the angle adjustment mechanism 4, the spreading basin frame 2, the spreading disc 21, the spreading linkage mechanism 6, the fertilizer discharge auger shaft 3, and the spreading drive mechanism 7 work together, can not only increase the spreading range, so that the spreading range can reach 10 meters in actual operation; but also adjust the spreading angle, thereby effectively improving the efficiency of fertilizer spreading.

[0050] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A spreading device for a fertilizer spreader, characterized in that: The system includes a spreading frame (1), a spreading basin frame (2) is rotatably mounted on the bottom of the spreading frame (1) via an angle adjustment mechanism (4), a spreading disc (21) is symmetrically rotatably mounted on the spreading basin frame (2), a spreading linkage mechanism (6) is provided between the bottom of the spreading basin frame (2) and one side of the spreading frame (1), the spreading linkage mechanism (6) is connected to both spreading discs (21), a fertilizer discharge auger shaft (3) is rotatably mounted on the inner side of the spreading frame (1) to cooperate with the spreading linkage mechanism (6), and a spreading drive mechanism (7) is also provided on the other side of the spreading frame (1) to cooperate with the fertilizer discharge auger shaft (3).

2. The spreading device for a fertilizer spreader according to claim 1, characterized in that: The angle adjustment mechanism (4) includes a rotating rod (41) rotatably mounted on one side of the bottom of the scattering frame (1). One end of the rotating rod (41) is connected to one side of the scattering basin frame (2). An adjusting rod (42) is hinged to the other side of the scattering basin frame (2). One end of the adjusting rod (42) has an adjusting waist-shaped hole (421). A clamping plate (43) is provided on the outer side of the scattering frame (1). A clamping limiting shaft that cooperates with the adjusting waist-shaped hole (421) is provided on the clamping plate (43). 44) A pull rod column (422) is provided on the inner side of the adjusting pull rod (42). An adjusting limit rod frame (45) is rotatably provided on the pull rod column (422). A plurality of clamping holes (451) that cooperate with the clamping limit shaft (44) are symmetrically opened on one end of the adjusting limit rod frame (45). A manual pull rod (46) is also provided on one end of the adjusting limit rod frame (45), and a retaining spring (47) is connected to the other end. One end of the retaining spring (47) is connected to one end of the adjusting pull rod (42).

3. The spreading device for a fertilizer spreader according to claim 1, characterized in that: The spreading linkage mechanism (6) includes a spreading linkage shaft (61) rotatably disposed between the spreading frame (1) and the spreading disc (21) frame. Two active bevel gears (611) are provided on the spreading linkage shaft (61). The bottom of each of the two spreading discs (21) is provided with a driven bevel gear (22) that meshes with the two active bevel gears (611). A linkage component is also provided at one end of the spreading linkage shaft (61) and one end of the fertilizer discharge auger shaft (3).

4. The spreading device for a fertilizer spreader according to claim 3, characterized in that: The linkage assembly includes a scattering drive sprocket (612) disposed at one end of the scattering linkage shaft (61), a fertilizer discharge auger sprocket (32) disposed at one end of the fertilizer discharge auger shaft (3), a scattering drive chain (62) wound between the fertilizer discharge auger sprocket (32) and the scattering drive sprocket (612), and an adjusting plate (63) disposed on the outer side of the scattering frame (1) via an adjusting locking component, and an adjusting tension wheel (63) rotatably disposed on the adjusting plate (63) abutting against the scattering drive chain (62).

5. The spreading device for a fertilizer spreader according to claim 1, characterized in that: The spreading drive mechanism (7) includes a support plate frame (71) disposed on one side of the spreading frame (1). A fertilizer discharge motor (72) is disposed on the inner side of the support plate frame (71). A fertilizer discharge motor sprocket (721) is disposed at the output end of the fertilizer discharge motor (72). A rotating shaft (73) is rotatably disposed on the outer side of the support plate frame (71). A first output diverter sprocket (731) and a second output diverter sprocket (732) are disposed sequentially on the rotating shaft (73). A fertilizer discharge motor output chain (74) is wound between the first output diverter sprocket (731) and the fertilizer discharge motor sprocket (721). A second fertilizer discharge sprocket (33) is disposed at the other end of the fertilizer discharge auger shaft (3). A power drive chain (75) is wound between the second fertilizer discharge sprocket (33) and the second output diverter sprocket (732).

6. The spreading device for a fertilizer spreader according to claim 5, characterized in that: The outer side of the bearing plate frame (71) is rotatably provided with a tension sprocket (78) that meshes with the output chain (74) of the fertilizer discharge motor. The outer side of the bearing plate frame (71) is also provided with an adjustment plate two through an adjustment locking member two. The adjustment plate two is rotatably provided with an adjustment tension wheel two (8) that abuts against the power drive chain (75).

7. The spreading device for a fertilizer spreader according to claim 1, characterized in that: The two sides of the scattering basin frame (2) are also symmetrically provided with scattering guide mechanisms (5). The scattering guide mechanism (5) includes a scattering guide plate (51) hinged to one side of the scattering basin frame (2). An adjusting strip plate (52) is provided on one side of the scattering basin frame (2) by fasteners. An adjusting element is provided between the adjusting strip plate (52) and the scattering guide plate (51).

8. The spreading device for a fertilizer spreader according to claim 1, characterized in that: The fertilizer discharge auger shaft (3) is equipped with a fertilizer discharge auger (31).

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