Depth limiting wheel adjusting mechanism of air suction type seeding single body

Abstract

The utility model relates to a depth wheel adjusting mechanism of an air suction type seeding monomer. Comprising two depth limiting pull arms, a first pull plate, a second pull plate, a handle, a scale plate and a limiting block, the upper ends of the two depth limiting pull arms are connected with the two ends of the limiting block, the lower ends of the depth limiting pull arms are rotationally connected with a depth limiting wheel shaft of a depth limiting wheel, and the middles of the depth limiting pull arms are rotationally connected with a seeding single machine frame through rotating shafts; the limiting block is arranged in the limiting groove, the rear end of the first pulling plate is movably connected with the front end of the second pulling plate, the rear end of the second pulling plate penetrates out of a long hole in the middle of the scale plate and then is connected with the handle, the scale plate is fixedly connected with the seeding single rack, and a connecting piece protruding towards the side face is arranged on the front portion of the second pulling plate and rotationally connected with the seeding single rack. The device belongs to a dragging type front depth wheel adjusting structure form, the depth limiting wheels are pulled forwards, the device is lighter, soil layers are not damaged, the ridge shape is perfect, the soil accumulated temperature is increased, and the seedling protection rate is increased.

Description

Technical Field

[0001] The utility model relates to the field of seed drill equipment, in particular to a depth limiting wheel regulating mechanism of an air suction seeding unit. Background Art

[0002] The air-suction seeder is a seeder that achieves precision sowing by sucking seeds by negative pressure. It can achieve single-seed sowing, achieve sowing precision, and have a low missed sowing rate. It can accurately control the seed sowing depth and plant spacing, and achieve high-speed sowing. The sowing depth directly affects the survival rate and yield of crops. Moreover, for the same crop, the sowing depth needs to be adjusted differently in different areas according to the compaction degree and water content of the soil. When the seeder is in use, it is difficult to ensure the consistency of the depth and width of the sowing furrow due to the uneven ground, resulting in inconsistent emergence and uneven growth. Therefore, the depth-limiting wheel and the depth-limiting wheel adjustment mechanism are one of the key components in the sowing machinery.

[0003] Existing seed drills are usually equipped with seeding depth limiting wheels. When sowing, under the traction of the tractor, the furrow opener cuts into the soil to open a seed furrow, and the depth limiting wheels on both sides always move close to the ground. The seeding depth limiting wheels can float with the changes in the ground topography, and the seeding depth limiting wheels drive the seeding furrow opener to move, thereby ensuring the consistency of furrowing on different ground surfaces.

[0004] The most widely used depth-limiting wheel adjustment mechanism is Figure 7-9 As shown, the sowing unit includes a frame 101, a depth limiting wheel 102 and a depth limiting wheel adjustment mechanism, and the depth limiting wheel adjustment mechanism includes a rotating arm 103, an adjusting rod 104, a threaded sleeve 105, a push-pull rod 106, a rotating shaft 107, a rotating arm shaft 108, a cover plate 109, a retaining ring 110, a screw 111, a pin shaft hole 112, and a pin shaft 113. Two rotating arms 103 are rotatably connected with the frame 101, the front end of the rotating arm is rotatably connected with the depth limiting wheel 102, and the rear end is connected with the depth limiting wheel adjustment mechanism. The front part of the adjusting rod 104 is connected with the threaded sleeve 105 as a whole, and the front part of the adjusting rod is fixed with a retaining ring 110, which is arranged between the cover plate 109 and the frame, and the cover plate is fixed on the frame by bolts. The rear end of the push-pull rod 106 is connected with the screw 111 as a whole, and the screw is threadedly connected with the threaded sleeve. The front end of the push-pull rod is bolted with the rotating arm shaft 108, and the two ends of the rotating arm shaft are fixed with a pin 113, and the pin is matched with the pin hole 112 on the rotating arm. When adjusting the depth limiting wheel 102, the adjusting rod is shaken to rotate the threaded sleeve at the same time, and the pin on the rotating arm shaft at the front end of the push-pull rod is inserted into the pin hole on the rotating arm to limit the rotation of the push-pull rod and the screw. When the threaded sleeve rotates, the push-pull rod and the screw can only push or pull the rotating arm to make the depth limiting wheel rise or fall. This depth limiting wheel adjusting mechanism is a rear-mounted depth limiting wheel adjusting mechanism relative to the depth limiting wheel. The depth limiting wheel is pushed from the back, which creates resistance and damages the soil layer and ridge shape. Utility Model Content

[0005] The utility model aims to provide a depth limiting wheel regulating mechanism for an air suction type sowing unit. The depth limiting wheel regulating mechanism is a front structure relative to the depth limiting wheel, does not damage the soil layer, and has a perfect ridge shape.

[0006] The technical solution of this utility model:

[0007] A depth limiting wheel adjustment mechanism for an air-suction seeding unit comprises two depth limiting pulling arms, a first pulling plate, a second pulling plate, a handle, a scale plate and a limit block, the upper ends of the two depth limiting pulling arms are connected to the two ends of the limit block, the lower ends of the depth limiting pulling arms are rotatably connected to the depth limiting wheel axle of the depth limiting wheel, the middle part of the depth limiting pulling arm is rotatably connected to the seeding unit frame through a rotating shaft, a limit groove is provided at the front end of the first pulling plate, the limit block is placed in the limit groove, the rear end of the first pulling plate is movably connected to the front end of the second pulling plate, the rear end of the second pulling plate passes through the long hole in the middle of the scale plate and is connected to the handle, the scale plate is fixedly connected to the seeding unit frame, the front part of the second pulling plate is provided with a connecting piece protruding to the side, and the connecting piece is rotatably connected to the seeding unit frame.

[0008] Beneficial effects of the utility model:

[0009] 1. The depth limiting wheel adjustment mechanism of the present application belongs to the towing type front current depth wheel adjustment structure. Pulling the depth limiting wheel forward is lighter, does not damage the soil layer, creates a perfect ridge shape, increases soil accumulated temperature, and improves the seedling protection rate.

[0010] 2. The depth limiting wheel adjustment mechanism of the present application is more convenient to use, and a scale plate is added, and the scale plate has multiple limit holes, so that the depth limiting wheel height adjustment is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0012] Figure 1 This is a three-dimensional diagram of the depth limiting wheel adjustment mechanism of this application.

[0013] Figure 2 This is the front view of the depth limiting wheel adjustment mechanism of this application.

[0014] Figure 3 This is a top view of the depth limiting wheel adjustment mechanism of this application.

[0015] Figure 4 This is the right view of the depth limiting wheel adjustment mechanism of this application.

[0016] Figure 5 This is the left view of the depth limiting wheel adjustment mechanism of this application.

[0017] Figure 6 It is a schematic diagram of the structure of an air-suction seeding unit with a depth-limiting wheel adjustment mechanism of the present application.

[0018] Figure 7 It is a schematic diagram of the structure of a sowing monomer in the prior art.

[0019] Figure 8-9 It is a schematic diagram of the structure of the depth limiting wheel adjustment mechanism of the sowing unit in the prior art.

[0020] Reference numerals:

[0021] Traction connecting frame 1; single frame 2; seed box 3; seed meter 4; depth limiting wheel 5; depth limiting pulling arm 6; first pulling plate 7; second pulling plate 8; handle 9; scale plate 10; limit block 11; limit groove 12; connecting piece 13; clamping part 15; connecting part 16; frame 101; depth limiting wheel 102; rotating arm 103; adjusting rod 104; threaded sleeve 105; push-pull rod 106; rotating shaft 107; rotating arm shaft 108; cover plate 109; retaining ring 110; screw rod 111; pin shaft hole 112; pin shaft 113. DETAILED DESCRIPTION

[0022] In order to solve the problems in the background technology, the depth limiting wheel adjustment mechanism of the air suction sowing unit of the present application is specially invented, which is a pulling depth limiting wheel, is lighter and has less resistance.

[0023] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings. It should be noted that, in the description of the present invention, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] The application is described in detail below with reference to the accompanying drawings:

[0025] An air suction sowing unit comprises a traction connection frame 1, a unit frame 2, a seed box 3, a seed meter 4, and a depth limiting wheel 5. When sowing, the sowing depth needs to be adjusted according to the soil conditions and the types of crops, so a depth limiting wheel adjustment mechanism is installed on the sowing unit frame between the seed meter 4 and the depth limiting wheel 5.

[0026] The depth limiting wheel adjustment mechanism includes two depth limiting pulling arms 6, a first pulling plate 7, a second pulling plate 8, a handle 9, a scale plate 10 and a limit block 11. The upper ends of the two depth limiting pulling arms 6 are connected to the two ends of the limit block 11, the lower ends of the depth limiting pulling arms 6 are rotatably connected to the depth limiting wheel axle of the depth limiting wheel 5, and the middle part of the depth limiting pulling arms 6 is rotatably connected to the sowing unit frame through a rotating shaft.

[0027] The front end of the first pull plate 7 is provided with a limit groove 12, and the limit block 11 is clamped in the limit groove 12. The rear end of the first pull plate 7 is movably connected to the front end of the second pull plate 8. The rear end of the second pull plate 8 passes through the long hole in the middle of the scale plate 10 and is connected to the handle 9. The scale plate 10 is fixedly connected to the sowing unit frame. The front part of the second pull plate 8 is provided with a connecting piece 13 protruding to the side, and the connecting piece 13 is rotatably connected to the sowing unit frame. There are multiple limit holes 11 on the scale plate 10, and a limit column is provided on the side where the handle 9 contacts the scale plate 10. After the handle is moved left and right to adjust the height of the depth limiting wheel, the limit column is inserted into the limit hole to position it to prevent the handle from moving left and right. The depth limiting wheel adjustment mechanism of the present application is a towing front current depth structure, which belongs to a pulling depth limiting wheel, which is lighter and does not damage the soil layer. The ridge shape is perfect to increase the soil temperature accumulation and improve the seedling protection rate.

[0028] The second pull plate 8 is a bent plate as a whole. One side of the front end of the second pull plate 8 is in the shape of a barb, and the other side is a connecting piece 13 extending to the side. The rear end of the first pull plate 7 is provided with a hole, and the barb of the second pull plate 8 passes through the hole on the first pull plate 7 to connect the first pull plate 7 with the second pull plate 8. The end of the connecting piece 13 is provided with a hole, and is rotatably connected to the sowing unit frame through a pin shaft.

[0029] The limit block 11 is arranged at the front end of the sowing unit frame, the middle part of the limit block 11 is a cylindrical clamping part 15, and the two ends are spherical connecting parts 16. There is a neck between the cylindrical clamping part 15 and the spherical connecting part 16. The clamping part 15 is clamped in the limit groove 12. The upper end of the depth limiting pulling arm 6 is a recessed ball seat facing the limit block 11, and the spherical connecting part 16 is placed in the ball seat. The ball seat of the depth limiting pulling arm is connected to the spherical connecting part through a pin shaft.

[0030] Working process:

[0031] Before the sowing unit carries out sowing operations, it is necessary to adjust the sowing depth as required, pull out the limit column of the handle from the limit hole of the scale plate, move the handle to the left and right, the second pull plate pulls the first pull plate, the first pull plate pulls the limit block, and then pulls the upper end of the depth limit pull arm forward or backward, the depth limit pull arm rotates with the middle shaft as the rotation point, and the lower end of the depth limit pull arm pulls the depth limit wheel up and down, adjusts the height of the depth limit wheel, and then adjusts the sowing depth. After the sowing depth is determined, insert the limit column of the handle into the corresponding limit hole to complete the adjustment of the sowing depth.

[0032] The "front" in the present application refers to the forward direction when the sowing unit is operating, and the "rear" refers to the direction opposite to the forward direction when the sowing unit is operating.

[0033] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the above and does not deviate from the technical solution of the present invention, and designs a structure and implementation similar to the technical solution based on the above implementation examples without creativity, they shall all fall within the protection scope of the present invention.

Claims

1. A depth-limiting wheel adjustment mechanism for an air-suction sowing unit, characterized in that: It includes two depth limiting pulling arms, a first pulling plate, a second pulling plate, a handle, a scale plate and a limit block. The upper ends of the two depth limiting pulling arms are connected to the two ends of the limit block, the lower ends of the depth limiting pulling arms are rotatably connected to the depth limiting wheel axle of the depth limiting wheel, the middle part of the depth limiting pulling arm is rotatably connected to the sowing unit frame through a rotating shaft, a limit groove is opened at the front end of the first pulling plate, the limit block is placed in the limit groove, the rear end of the first pulling plate is movably connected to the front end of the second pulling plate, the rear end of the second pulling plate passes through the long hole in the middle of the scale plate and is connected to the handle, the scale plate is fixedly connected to the sowing unit frame, and the front part of the second pulling plate is provided with a connecting piece protruding to the side, and the connecting piece is rotatably connected to the sowing unit frame.

2. The depth-limiting wheel adjustment mechanism of the air-suction sowing unit according to claim 1, characterized in that: The second pulling plate is a bent plate.

3. The depth-limiting wheel adjustment mechanism of the air-suction sowing unit according to claim 1, characterized in that: The middle part of the limit block is a cylindrical clamping part, and the two ends are spherical connecting parts. There is a neck between the cylindrical clamping part and the spherical connecting part. The clamping part is clamped in the limit groove. The upper end of the depth limiting pulling arm is a recessed ball seat facing the limit block. The spherical connecting part is placed in the ball seat, and the ball seat and the spherical connecting part are connected by a pin shaft.

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