Seeding machine capable of adjusting row spacing

Abstract

The utility model discloses a sower capable of adjusting row spacing, which comprises a connecting frame, a main frame is fixed on the connecting frame, the main frame is provided with a support frame and a storage box, a plurality of rear ditching cutters and front ditching cutters are arranged, and the limitation on the ditching cutters is relieved through structures such as an inner control panel and a control shaft so as to adjust the row spacing. The ditching cutters are linked through adjusting rods and inner control rods which are arranged in a staggered and reverse mode, and synchronous line spacing adjustment is achieved. The control shaft is sleeved with a spring to enhance stability, multi-person cooperation convenient operation is achieved through a pull rod, an inclined connecting rod and the like, and the line spacing is precisely fixed through tooth meshing of a limiting block and a joint rod. The seeder solves the problems that a traditional seeder is inconvenient in row spacing adjustment, poor in adjustment consistency, unstable in structure, inaccurate in positioning and the like, and the seeding efficiency and quality are improved.

Description

Technical Field

[0001] This application relates to the field of seeders, specifically to a seeder with adjustable row spacing. Background Technology

[0002] In agricultural planting, seeders are crucial equipment for achieving efficient sowing operations. However, existing seeders have several shortcomings in row spacing adjustment. Different crops have different row spacing requirements, and different planting plots also necessitate flexible adjustments to the sowing row spacing. Traditional seeder row spacing adjustment methods are often complex, potentially requiring specialized tools and cumbersome disassembly and assembly procedures, consuming significant time and manpower and reducing sowing efficiency. Furthermore, some seeders struggle to ensure consistent adjustment between multiple furrow cutters during row spacing, resulting in uneven sowing row spacing that negatively impacts crop growth and yield. Simultaneously, some seeders exhibit poor structural stability during adjustment, leading to loose or damaged parts, increasing maintenance costs and downtime. Moreover, if the row spacing cannot be accurately positioned and fixed during use, the sowing quality will decline.

[0003] Therefore, it is of great significance to develop a seeder that can conveniently, accurately and stably adjust row spacing. Summary of the Invention

[0004] In response to the above-mentioned technical problems, this application solves the problem of inconvenient row spacing adjustment in existing seeders.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: an adjustable row spacing seeder, including a connecting frame, a main frame fixedly installed on the connecting frame, a support frame fixedly installed on the main frame, a storage box provided on the support frame, multiple rear furrow cutters and front furrow cutters provided on the main frame, an installation ring fixedly installed on each rear furrow cutter, a seeding tube of the storage box connected to the installation ring, a connecting plate fixedly installed on the rear furrow cutter, the connecting plate and the main frame having through holes of the same specifications, the main frame being a hollow shell structure, an inner control plate vertically slidingly installed on its inner wall, and a control shaft of the same specifications as the through holes of the main frame and the connecting plate fixedly installed on the inner control plate.

[0006] The multiple rear and front trenching cutters are staggered and arranged in opposite directions. Each of the rear and front trenching cutters has an adjusting rod rotatably mounted on one side facing each other and away from the connecting frame. The two adjusting rods intersect each other and are rotatably connected at the intersection by a rotating shaft. The other end of the adjusting rod on the rear trenching cutter is slidably connected to the front trenching cutter, and the adjusting rod on the front trenching cutter is slidably connected to the rear trenching cutter. The adjusting rod is rotatably connected to an inner control rod by a rotating shaft. Multiple inner control rods are provided. The inner control rod near the middle mounting plate slides on the slide groove of the main frame and the limiting plate. The slide groove of the main frame and the limiting plate restricts the sliding direction of the inner control rod.

[0007] Preferably, a spring is sleeved on the control shaft, with one end of the spring facing the inner control plate fixedly connected to the inner control plate, and the other end of the spring away from the inner control plate movably connected to the main frame.

[0008] Preferably, a middle mounting plate is fixedly mounted on the main frame, a turntable is rotatably mounted on the middle mounting plate, two convex shafts are mounted on the turntable, a linkage rod is rotatably mounted on the convex shafts, and a pull rod is slidably mounted on the main frame, with the pull rod and the linkage rod being slidably connected.

[0009] Preferably, the rear trenching cutter and the front trenching cutter are provided with a sliding groove for the tie rod to slide.

[0010] Preferably, a horizontal connecting plate is fixedly installed on the inner control plate, and a diagonal connecting rod is rotatably installed on the horizontal connecting plate, the diagonal connecting rod being rotatably connected to the pull rod.

[0011] Preferably, an outer control rod is slidably mounted on the inner control rod, and a connecting rod is fixedly mounted on both ends of the outer control rod, with a handle and a tooth fixedly mounted on the connecting rod.

[0012] Preferably, the inner control plate is fixedly provided with two top blocks and a limiting block. The limiting block is provided with a slider, which is fixedly connected to the top block. The limiting block is provided with a sliding groove. A long connecting rod is slidably provided on the inner control plate, and the long connecting rod is connected to the sliding groove of the two limiting blocks.

[0013] The technical solution provided in this application has the following advantages compared with the prior art:

[0014] 1. This application utilizes cleverly designed components such as an internal control panel, control shaft, adjusting rod, and internal control lever. Operators can easily release the restrictions on the rear and front trenching cutters and adjust the row spacing simply by pulling the lever and pushing the handle. The operation is simple and convenient, greatly improving adjustment efficiency. For example, it can quickly adjust the row spacing to meet diverse planting requirements, whether for different crops or in different planting areas.

[0015] 2. The spring fitted on the control shaft in this application ensures a stable connection between the control shaft and the connecting plate, while also ensuring that the control shaft can smoothly disengage from the connecting plate when the restriction is lifted. Furthermore, the relative length of the upper and lower ends of the control shaft can be adjusted via threads, enhancing the stability and reliability of the structure. In addition, the grooves on the rear and front grooving cutters restrict the sliding of the pull rod, preventing damage to parts due to force direction deviation and ensuring the stability of the equipment during adjustment.

[0016] 3. In this application, multiple rear and front furrowing knives are staggered and arranged in opposite directions. Through the linkage of an adjusting rod and an inner control rod, the spacing of the remaining knives is adjusted synchronously when the middle rear and front furrowing knives move, ensuring consistent row spacing. This synchronous adjustment function results in uniform sowing row spacing, which is beneficial for crop growth and subsequent management.

[0017] 4. In this application, the limiting block and the connecting rod are engaged by teeth to fix the position of the connecting rod, thereby fixing the positions of the outer control rod, adjusting rod, rear furrow cutter, and front furrow cutter, maintaining the accuracy of the sowing row spacing. When the row spacing needs to be adjusted, the inner control plate drives the limiting block to move upward, releasing the engagement restriction, facilitating the adjustment operation, and ensuring the accuracy and stability of the row spacing adjustment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this application;

[0019] Figure 2 This is a side view of this application;

[0020] Figure 3 This is a schematic diagram of the main framework of this application;

[0021] Figure 4 for Figure 3 Enlarged view of the local structure at point A;

[0022] Figure 5 This is a schematic diagram of the internal control panel of this application;

[0023] Figure 6 for Figure 5 Enlarged view of the local structure at point B;

[0024] Figure 7 for Figure 5 Enlarged view of the local structure at point C;

[0025] Figure 8 This is a schematic diagram of the structure of the rear trenching cutter and the front trenching cutter;

[0026] Figure 9 This is a schematic diagram of the adjusting rod in this application;

[0027] Figure 10 This is a schematic diagram of the tie rod in this application.

[0028] In the diagram: 101-Connecting frame; 102-Supporting frame; 103-Storage box; 104-Main frame; 105-Rear trenching cutter; 106-Mounting ring; 107-Limiting plate; 108-Pull rod; 109-Intermediate mounting plate; 110-Turntable; 111-Linkage rod; 112-Diagonal connecting rod; 113-Horizontal connecting plate; 114-Inner control plate; 115-Control shaft; 116-Spring; 117-Connecting plate; 118-Adjusting rod; 119-Limiting rod; 120-Inner control rod; 121-Outer control rod; 122-Connecting rod; 123-Handle; 124-Top block; 125-Limiting block; 126-Long connecting rod; 127-Front trenching cutter. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0031] like Figures 1 to 10 As shown, an adjustable row spacing seeder includes a connecting frame 101, a main frame 104 fixedly mounted on the connecting frame 101, a support frame 102 fixedly mounted on the main frame 104, a storage box 103 mounted on the support frame 102, a plurality of rear furrow cutters 105 and front furrow cutters 127 mounted on the main frame 104, an mounting ring 106 fixedly mounted on each rear furrow cutter 105, the seeding tube of the storage box 103 being connected to the mounting ring 106, a connecting plate 117 fixedly mounted on each rear furrow cutter 105, the connecting plate 117 and the main frame 104 having through holes of the same specifications, the main frame 104 being a hollow shell structure, an inner control plate 114 vertically slidingly mounted on its inner wall, and a control shaft of the same specifications as the through holes of the main frame 104 and the connecting plate 117 fixedly mounted on the inner control plate 114.

[0032] Before adjusting the sowing row spacing, the restrictions on the rear furrow cutter 105 and the front furrow cutter 127 need to be lifted. That is, the operator receives the control plate 114 on the main frame 104 to slide upward on the main frame 104. As a result, the inner control plate 114 drives the control shaft 115 to slide on the through hole of the main frame 104 and the connecting plate 117. The lower end of the control shaft 115 disengages from the through hole of the connecting plate 117, thereby lifting the restriction on the connecting plate 117. The rear furrow cutter 105 and the front furrow cutter 127 can then slide along the direction of the main frame 104, adjusting the position of the sowing tube output on the mounting ring 106, and thus adjusting the sowing row spacing.

[0033] The plurality of rear trenching cutters 105 and front trenching cutters 127 are staggered and arranged in opposite directions. Each of the rear trenching cutters 105 and the front trenching cutter 127 has an adjusting rod 118 rotatably mounted on one side facing each other and away from the connecting frame 101. The two adjusting rods 118 cross each other and are rotatably connected at the intersection by a rotating shaft. The other end of the adjusting rod 118 on the rear trenching cutter 105 is slidably connected to the front trenching cutter 127, and the adjusting rod 118 on the front trenching cutter 127 is slidably connected to the rear trenching cutter 105. An inner control rod 120 is rotatably connected to the adjusting rod 118 by a rotating shaft. There are multiple inner control rods 120. The inner control rod 120 near the middle mounting plate 109 slides on the sliding groove of the main frame 104 and the limiting plate 107. The sliding groove of the main frame 104 and the limiting plate 107 restricts the sliding direction of the inner control rod 120.

[0034] Specifically, during sowing, the rotation axes on the two adjusting rods 118 are controlled to move towards the main frame 104 on both sides according to the required sowing spacing. Since one end of the two adjusting rods 118 is rotatably mounted on the rear furrow cutter 105 and the front furrow cutter 127 respectively, when the rotating shaft soil hole adjusting rod 118 moves, that end of the adjusting rod 118 rotates on the rear furrow cutter 105 and the front furrow cutter 127, and the other end of the adjusting rod 118 slides on the front furrow cutter 127 and the rear furrow cutter 105 in the direction of the rotation axis movement. The rear furrow cutter 105 and the front furrow cutter 127 are provided with limiting rods 119 to restrict the sliding of the adjusting rod 118. Because the inner control rod 120 in the middle of the main frame 104 is on the sliding groove of the main frame 104, the inner control rod 120 moves along the lateral direction of the inner control plate 114. That is, the movement path of the inner control rod 120 is perpendicular to the movement path of the rear furrow cutter 105 and the front furrow cutter 127. The other inner control rods 120 are not connected to the sliding groove of the main frame 104. Therefore, when the middle inner control rod 120 drives the rear furrow cutter 105 and the front furrow cutter 127 near the middle to unfold and then retract, the rear furrow cutter 105 and the front furrow cutter 127 move along the direction of the main frame 104, thereby changing the distance between the rear furrow cutter 105 and the front furrow cutter 127, and realizing the adjustment of the sowing row spacing.

[0035] like Figure 8 As shown, when the middle rear trenching cutter 105 and front trenching cutter 127 move, the adjusting rod 118 and the corresponding inner control rod 120 on the opposite side of the rear trenching cutter 105 and front trenching cutter 127 move synchronously with the middle inner control rod 120 along the direction perpendicular to the main frame 104. Furthermore, the inner control rod 120 is also driven to move by the movement of the main frame 104 caused by the movement of the middle rear trenching cutter 105 and front trenching cutter 127. That is, when the middle rear trenching cutter 105 and front trenching cutter 127 move... When the two grooving cutters 105 move away from each other, the side of the rear grooving cutter 105 away from the middle front grooving cutter 127 is pushed by another adjusting rod 118 to the adjacent front grooving cutter 127 on that side. When the inner control rod 120 moves, all the inner control rods 120 move synchronously in the direction closer to or away from the main frame 104. However, the middle inner control rod 120 is restricted by the main frame 104 and cannot slide along the direction of the main frame 104, that is, the direction of movement of the rear grooving cutter 105 and the front grooving cutter 127.

[0036] like Figures 5 to 7 As shown, a spring 116 is sleeved on the control shaft 115. One end of the spring 116 facing the inner control plate 114 is fixedly connected to the inner control plate 114, and the other end of the spring 116 away from the inner control plate 114 is movably connected to the main frame 104.

[0037] Specifically, the control shaft 115 is connected to the inner control plate 114 by a thread. When installing the control shaft 115, first insert the inner control plate 114 into the main frame 104, then insert the control shaft 115 through the through hole of the main frame 104, then insert the inner control plate 114, and then rotate the control shaft 115. The control shaft 115 is installed by the threaded engagement between the control shaft 115 and the inner control plate 114, thereby adjusting the relative length of the upper and lower ends of the control shaft 115. This ensures that the lower end of the control shaft 115 can be inserted into the connecting plate 117, completely restricting the movement of the connecting plate 117, and preventing the lower end of the control shaft 115 from completely disengaging from the connecting plate 117 when the inner control plate 114 moves upward to its maximum distance.

[0038] like Figure 3 , Figure 5 and Figure 10 As shown, a middle mounting plate 109 is fixedly mounted on the main frame 104. A turntable 110 is rotatably mounted on the middle mounting plate 109. Two convex shafts are provided on the turntable 110, and a linkage rod 111 is rotatably mounted on the convex shafts. A pull rod 108 is slidably mounted on the main frame 104, and the pull rod 108 is slidably connected to the linkage rod 111. Specifically, the pull rods 108 on both sides are connected by the turntable 110 and the linkage rod 111, thereby controlling the horizontal connecting plates 113 on both sides, which in turn control the movement of the inner control plates 114 on both sides.

[0039] like Figure 9 As shown, the rear trenching cutter 105 and the front trenching cutter 127 are provided with sliding grooves for the sliding of the tie rod 108. These grooves also restrict the sliding of the tie rod 108, preventing damage to the parts caused by a change in the direction of force when the operator pulls the tie rod 108.

[0040] like Figure 3 , Figure 5 and Figure 10 As shown, a horizontal connecting plate 113 is fixedly installed on the inner control plate 114, and a diagonal connecting rod 112 is rotatably installed on the horizontal connecting plate 113. The diagonal connecting rod 112 is rotatably connected to the pull rod 108.

[0041] Specifically, the main frame 104 is equipped with two sets of tie rods 108, diagonal connecting rods 112, transverse connecting plates 113, and linkage rods 111, which are symmetrically arranged. In use, two workers are located on both sides, each controlling one tie rod 108. Pulling the tie rod 108 to move it outward will cause the tie rod 108 to pull the lower end of the diagonal connecting rod 112, which is tilted outward. This will cause the upper end of the diagonal connecting rod 112 to push the transverse connecting plate 113 to move. Since the transverse connecting plate 113 is fixedly connected to the inner control plate 114 in the main frames 104 on both sides, it will push the inner control plate 114 to move upward in the main frame 104. In turn, the inner control plate 114 will drive the control shaft 115 to disengage from the connecting plate 117, thereby releasing the restriction on the rear trenching cutter 105 and the front trenching cutter 127. When the pull rod 108 is pulled, the pull rod 108 also pulls the lower end of the linkage rod 111, and the upper end of the linkage rod 111 pulls the convex shaft of the turntable 110, causing the turntable 110 to rotate on the intermediate mounting plate 109. As the turntable 110 rotates, the change in the position of the convex shaft causes the linkage rod 111 to slide on the pull rod 108.

[0042] like Figure 8 As shown, an outer control rod 121 is slidably mounted on the inner control rod 120. Both ends of the outer control rod 121 are fixedly mounted with connecting rods 122, and handles 123 and teeth are fixedly mounted on the connecting rods 122.

[0043] Specifically, when it is necessary to increase the row spacing, that is, to increase the distance between the rear trenching cutter 105 and the front trenching cutter 127, the worker stands at the pull rod 108 and pulls the pull rod 108 outward with one hand to release the restriction on the rear trenching cutter 105 and the front trenching cutter 127. Then, with the other hand, the worker pushes the handle 123 away from the pull rod 108. The handle 123 pushes the connecting rod 122 to slide outward on the main frame 104. The connecting rod 122 pulls multiple inner control rods 120 on it to move away from the pull rod 108, thereby pulling multiple adjustment rods 120. The pivot at the intersection of rods 118 changes the intersection angle of the adjusting rods 118. Because the middle inner control rod 120 is restricted by the slide groove of the main frame 104, the inner control rod 120 can move away from the pull rod 108 like the other inner control rods 120. However, the middle inner control rod 120 cannot move towards the handle 123. The other inner control rods 120, due to the change in the position of the rear grooving cutter 105 and the front grooving cutter 127, are driven by the adjusting rod 118 to move synchronously to both sides, so that the inner control rods 120 slide on the outer control rod 121.

[0044] like Figure 4 , Figure 6 and Figure 8 As shown, two top blocks 124 and a limiting block 125 are fixedly installed on the inner control plate 114. A slider is provided on the limiting block 125 and is fixedly connected to the top block 124. A sliding groove is provided on the limiting block 125. A long connecting rod 126 is slidably installed on the inner control plate 114 and is connected to the sliding groove of the two limiting blocks 125.

[0045] Specifically, when the inner control plate 114 is driven to move upward within the main frame 104, the inner control plate 114 pushes the limiting block 125 to slide upward within the main frame 104 via the top block 124. The limiting block 125 is installed inside the main frame 104 via a slider. One end of the limiting block 125 facing the connecting rod 122 is provided with teeth that mesh with the teeth of the connecting rod 122. When stationary, the teeth of the limiting block 125 and the teeth of the connecting rod 122 restrict the position of the connecting rod 122, thereby fixing the position of the outer control rod 121, the adjusting rod 118, the rear furrow cutter 105, and the front furrow cutter 127, and maintaining the row spacing for sowing.

[0046] When the limiting block 125 moves upward, the teeth of the limiting block 125 and the connecting rod 122 no longer mesh, so the movement of the connecting rod 122 is no longer restricted by the teeth of the limiting block 125. The operator can push the handle 123 to control the connecting rod 122 to slide on the main frame 104, thereby adjusting the row spacing of the rear grooving cutter 105 and the front grooving cutter 127.

[0047] When installing the limiting block 125, first install the long connecting rod 126 into the main frame 104, then insert the sliding groove of the limiting block 125 into the long connecting rod 126, and insert the protrusion of the limiting block 125 into the main frame 104. The long connecting rod 126 controls the movement of the limiting blocks 125 on both sides to ensure that the two sides move synchronously.

[0048] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An adjustable row spacing seeder, comprising a connecting frame (101), a main frame (104) fixedly mounted on the connecting frame (101), a support frame (102) fixedly mounted on the main frame (104), a storage box (103) provided on the support frame (102), a plurality of rear furrow cutters (105) and front furrow cutters (127) provided on the main frame (104), an mounting ring (106) fixedly mounted on each rear furrow cutter (105), and a seeding tube of the storage box (103) connected to the mounting ring (106), characterized in that: A connecting plate (117) is fixedly installed on the rear grooving cutter (105). The connecting plate (117) and the main frame (104) are provided with through holes of the same specifications. The main frame (104) is a hollow shell structure. An inner control plate (114) is vertically slidably installed on its inner wall. A control shaft (115) with the same specifications as the through holes of the main frame (104) and the connecting plate (117) is fixedly installed on the inner control plate (114). The plurality of rear grooving cutters (105) and front grooving cutters (127) are staggered and arranged in opposite directions. Each of the rear grooving cutters (105) and front grooving cutters (127) has an adjusting rod (118) rotatably mounted at the end facing away from the connecting frame (101). The two adjusting rods (118) intersect each other and are rotatably connected at the intersection via a pivot. The other end of the adjusting rod (118) on the rear grooving cutter (105) is slidably connected to the front grooving cutter (127). The adjusting rod (118) on the grooving cutter (127) is slidably connected to the rear grooving cutter (105). The adjusting rod (118) is rotatably connected to an inner control rod (120). Multiple inner control rods (120) are provided. The inner control rod (120) near the middle mounting plate (109) slides on the groove of the main frame (104) and the limiting plate (107). The groove of the main frame (104) and the limiting plate (107) restricts the sliding direction of the inner control rod (120).

2. The adjustable row spacing seeder according to claim 1, characterized in that: A spring (116) is sleeved on the control shaft (115). One end of the spring (116) facing the inner control plate (114) is fixedly connected to the inner control plate (114), and the other end of the spring (116) away from the inner control plate (114) is movably connected to the main frame (104).

3. The adjustable row spacing seeder according to claim 1, characterized in that: A middle mounting plate (109) is fixedly installed on the main frame (104). A turntable (110) is rotatably installed on the middle mounting plate (109). Two convex shafts are installed on the turntable (110). A linkage rod (111) is rotatably installed on the convex shaft. A pull rod (108) is slidably installed on the main frame (104). The pull rod (108) is slidably connected to the linkage rod (111).

4. The adjustable row spacing seeder according to claim 1, characterized in that: The rear trenching cutter (105) and the front trenching cutter (127) are provided with sliding grooves for the tie rod (108) to slide.

5. The adjustable row spacing seeder according to claim 1, characterized in that: A horizontal connecting plate (113) is fixedly installed on the inner control plate (114), and a diagonal connecting rod (112) is rotatably installed on the horizontal connecting plate (113). The diagonal connecting rod (112) is rotatably connected to the pull rod (108).

6. The adjustable row spacing seeder according to claim 1, characterized in that: An outer control rod (121) is slidably mounted on the inner control rod (120). Both ends of the outer control rod (121) are fixedly mounted with connecting rods (122). A handle (123) and teeth are fixedly mounted on the connecting rods (122).

7. The adjustable row spacing seeder according to claim 1, characterized in that: Two top blocks (124) and a limiting block (125) are fixedly installed on the inner control plate (114). A slider is provided on the limiting block (125), which is fixedly connected to the top block (124). A sliding groove is provided on the limiting block (125). A long connecting rod (126) is slidably installed on the inner control plate (114), and the long connecting rod (126) is connected to the sliding groove of the two limiting blocks (125).

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