A soybean seeder capable of achieving precise sowing

Abstract

A soybean planter capable of achieving precise sowing is used to achieve precise sowing of soybean seeds. The planter comprises a planter frame and a sowing unit, wherein the sowing unit comprises a first fixed shaft rotatably mounted on the planter frame, a hanging plate rotatably connected to the first fixed shaft, a second fixed shaft rotatably mounted on the hanging plate and arranged perpendicularly to the first fixed shaft, a retaining plate rotatably mounted on the second fixed shaft, a hollow seeding rod slidably mounted on the retaining plate, a storage box connected to the seeding rod through a conveying pipe, a hollow punching rod slidably connected to the seeding rod, a first spring arranged between the punching rod and the seeding rod, a driving mechanism for driving the seeding rod to reciprocate up and down, and a obtaining mechanism for allowing soybean seeds to fall into the punching rod one by one is arranged on the seeding rod. The present invention can make the excavated soil hole in a vertical state and the soybean seeds fall into the bottom of the soil hole, thereby achieving precise sowing.

Description

Technical Field

[0001] The invention relates to the technical field of soybean sowing, in particular to a soybean sowing machine capable of realizing precise sowing. Background Art

[0002] In the soybean sowing operation, if the soybean seeds fall on the edge of the soil hole, the germination rate of the soybean seeds will be reduced. Especially when the ground of the soybean field is uneven, the soybean seeds are very easy to be sown on the edge of the soil hole. Therefore, there is an urgent need for a soybean seeder that can achieve precise sowing, which is used to achieve precise sowing of soybean seeds. Summary of the invention

[0003] The object of the present invention is to provide a soybean seeder capable of achieving precise sowing, for achieving precise sowing of soybean seeds.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a soybean seeder that can achieve precise seeding, including a seeder frame and a seeding unit, characterized in that the seeding unit includes a first fixed shaft rotatably mounted on the seeder frame, a hanging plate rotatably connected to the first fixed shaft, a second fixed shaft rotatably mounted on the hanging plate and arranged perpendicularly to the first fixed shaft, a retaining plate rotatably mounted on the second fixed shaft, a hollow seeding rod slidably mounted on the retaining plate, a storage box connected to the seeding rod through a conveying pipe, a hollow punching rod slidably connected to the seeding rod, a first spring arranged between the punching rod and the seeding rod, and a driving mechanism that drives the seeding rod to reciprocate up and down, and a obtaining mechanism is provided on the seeding rod to allow soybean seeds to fall into the punching rod one by one.

[0005] Furthermore, a guide rail is provided on the front end surface of the retaining plate, and the seed taking rod is slidably arranged on the guide rail.

[0006] Furthermore, the driving mechanism includes a rotating wheel rotatably mounted on a retaining plate, a crank fixed on the rotating wheel, and a connecting rod arranged between the crank and the seed taking rod. The rotating wheel is driven to rotate by a motor or connected to a traveling mechanism on a seeder frame through a transmission mechanism.

[0007] Furthermore, the acquisition mechanism includes a seed ball rotatably installed in the inner cavity of the seed rod, a large gear coaxially arranged with the seed ball and located outside the seed rod, a small gear arranged outside the seed rod and meshing with the large gear, and a rack fixed on the outer wall of the punching rod, the rack is provided with teeth, and when the gear moves downward relative to the rack, the teeth on the rack and the teeth on the gear are in a non-meshing state, and when the gear moves upward relative to the rack, the teeth on the rack and the teeth on the gear are in a meshing state, and a pair of seed grooves are provided on the outer wall of the seed ball.

[0008] Furthermore, a plurality of slide grooves are provided on the rack, the teeth on the rack are slidably connected to the slide grooves, a second spring is provided between the teeth and the bottom of the slide grooves, and a rounded corner is provided on one side of the teeth.

[0009] Furthermore, a notch is provided on the side wall at the lower end of the seed taking rod, a hinge shaft is rotatably installed in the notch, a clamping rod is fixed on the hinge shaft, a magnet is provided at the lower end of the clamping rod, and when the magnets on the two clamping rods are attracted together, the upper end of the clamping rod extends out of the notch.

[0010] Furthermore, a fixing plate is fixed on the outer wall of the seed taking rod, and the upper end of the first spring is fixedly connected to the fixing plate.

[0011] Furthermore, a material guide is provided on the inner side of the seed taking rod, a tapered through hole is provided on the material guide, and the bottom of the material guide contacts the outer wall of the seed taking bulb.

[0012] Furthermore, a pipe clamp for clamping the conveying pipe is provided on the retaining plate.

[0013] Furthermore, spring plates fixedly connected to the seed drill frame are respectively provided on the left and right sides of the retaining plate, and a third spring is fixed on the spring plate.

[0014] The beneficial effects of the present invention are as follows: the present invention provides a soybean planter capable of achieving precise sowing. When encountering uneven ground, the hanging plate rotates around the first fixed axis or / and the retaining plate rotates around the second fixed axis under the action of its own weight, so that the retaining plate is in a vertical state; when the retaining plate is in a vertical state, the seed taking rod and the punching rod are also in a vertical state, so that the punching rod can make vertical holes in the ground, and the soybean seeds can enter the bottom of the holes along the punching rod, thereby achieving precise sowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of a sowing unit of the present invention;

[0016] Figure 2 To hold the front view of the board;

[0017] Figure 3 It is a schematic diagram of the assembly of the seed taking rod and the punching rod;

[0018] Figure 4 for Figure 3 A cross-sectional view of

[0019] Figure 5 is a cross-sectional view of the rack;

[0020] Figure 6 The diagram is a schematic diagram of the cooperation between the large gear and the small gear;

[0021] Figure 7 is a schematic diagram of the teeth on the rack;

[0022] In the figure: 1 first fixed shaft, 11 annular groove, 2 hanging plate, 21 second fixed shaft, 22 protrusion, 3 retaining plate, 31 ear plate, 32 pipe clamp, 33 guide rail, 4 seed taking rod, 40 ear, 41 conveying pipe, 42 storage box, 43 connecting rod, 44 crank, 45 rotating wheel, 46 fixed plate, 47 punching rod, 48 first spring, 49 notch, 5 clamping rod, 51 hinge shaft, 52 magnet, 6 seed taking ball, 61 seed taking groove, 62 material guide, 63 large gear, 64 small gear, 65 rack, 66 slide groove, 7 teeth, 71 fillet, 72 slider, 73 second spring, 8 spring plate, 81 third spring. DETAILED DESCRIPTION

[0023] like Figures 1 to 7 As shown, the present invention mainly comprises a seed drill frame and a seeding unit, wherein the seeding unit comprises a first fixed shaft 1, a hanging plate 2, a second fixed shaft 21, a retaining plate 3, a seed taking rod 4, a conveying pipe 41, a storage box 42, a punching rod 47 and a limit spring 81. The seeding unit is described in detail below in conjunction with the accompanying drawings.

[0024] like Figure 1 As shown, the first fixed shaft 1 is a horizontally arranged shaft, and both ends of the first fixed shaft are fixedly connected to the seeder frame, and the seeder frame is equipped with a walking mechanism for walking in the field. A hanging plate 2 is rotatably installed in the middle of the first fixed shaft, as shown in FIG. Figure 2 As shown, in order to prevent axial movement between the hanging plate and the first fixed shaft, an annular groove 11 is provided on the outer wall of the first fixed shaft, and a protrusion 22 placed in the annular groove is provided on the hanging plate. A second fixed shaft 21 is fixed at the lower end of the hanging plate, and a retaining plate 3 is hingedly installed on the second fixed shaft. For easy installation, an ear plate 31 is provided on the top of the retaining plate, and the ear plate is hingedly connected to the second fixed shaft. The first fixed shaft and the second fixed shaft are arranged vertically.

[0025] The holding plate is a metal plate, with a small upper end and a large lower end. A plurality of pipe clamps 32 are fixed on the front end surface of the holding plate, and the setting of the pipe clamps is used to realize the positioning of the conveying pipe 41. A guide rail 33 is also fixed on the front end surface of the holding plate, and a seed taking rod 4 is slidably installed on the guide rail. Figure 3 , Figure 4 As shown, the seeding rod is a hollow rod, the top of the seeding rod is connected to the lower end of the conveying pipe, the upper end of the conveying pipe is connected to the storage box 42, the soybean seeds in the storage box enter the conveying pipe, and then enter the seeding rod. The pipe clamp fixes the conveying pipe on the retaining plate, and the pipe clamp and the retaining plate are connected by screws.

[0026] The seeding rod is slidably connected to the guide rail, and the seeding rod can move up and down. In order to drive the seeding rod to move up and down, a rotating wheel 45 is rotatably installed on the retaining plate, a crank 44 is fixedly installed on the rotating wheel, a support ear 40 is fixed at the upper end of the seeding rod, and a connecting rod 43 is provided between the support ear and the crank; when the rotating wheel rotates, the crank and the connecting rod can drive the seeding rod to move up and down, and the rotating wheel, the crank, the connecting rod, the seeding rod, and the guide rail constitute a crank slider mechanism. As for the driving method of the rotating wheel, the rotating wheel can be driven to rotate by a motor or a diesel engine, or it can be connected to the walking mechanism on the seeder frame through a transmission mechanism such as a belt drive or a chain drive, and the rotation of the rotating wheel is indirectly driven by the walking mechanism. The rotating wheel, the crank, and the connecting rod constitute a driving mechanism that drives the seeding rod to move back and forth up and down.

[0027] A punching rod 47 is provided at the bottom of the seed taking rod. Figure 4 As shown, the punching rod is a hollow straight rod, the lower end of the seeding rod is placed inside the punching rod and the two are slidably connected, and the lower end of the punching rod is tapered to facilitate insertion into the soil. A fixing plate 46 is fixed on the outer wall of the seeding rod, and a first spring 48 is provided between the fixing plate and the upper end of the punching rod. A pair of notches 49 are provided on the side wall of the lower end of the seeding rod, and the notches are provided for installing the clamping rod 5.

[0028] like Figure 4 As shown, the clamping rod is a straight rod, and a hinge shaft 51 is fixed on the clamping rod. The hinge shaft is placed in the notch and is rotatably connected to the seed-taking rod. The lower end of the clamping rod is provided with a fitting surface, and a magnet 52 is fixed on the fitting surface. After the magnets on the two clamping rods are attracted together, the lower ends of the two clamping rods cooperate to achieve the closure of the seed-taking rod, and the upper end of the clamping rod extends a section of the seed-taking rod. At this time, the soybean seeds fall on the clamping rod, and will not continue to fall after crossing the clamping rod. When the punching rod moves up, when the punching rod contacts the upper end of the clamping rod, the punching rod presses the clamping rod to swing; when the clamping rod swings, the upper ends of the clamping rods approach each other and the lower ends move away from each other. When the spacing between the fitting surfaces of the clamping rods is greater than the outer dimensions of the soybean seeds, the soybean seeds fall from the gap between the lower ends of the two clamping rods.

[0029] Since the seeds in the storage box continuously fall into the conveying tube and move along the conveying tube, in order to make the seeds fall onto the clamping rod one by one, Figure 4As shown, a seeding ball 61 is rotatably installed on the inner side of the seeding rod, and a pair of seeding grooves 61 are provided on the outer wall of the seeding ball. The two seeding grooves are symmetrically arranged, and the connecting line of the two seeding grooves passes through the center of the seeding ball. A material guide 62 is provided above the seeding ball, and the inner side of the material guide is a tapered through hole. The size of the seeding groove is equivalent to the size of a soybean seed. When the seeding ball rotates, the soybean seeds in the seeding rod fall into the first seeding groove, and only one seed falls into the seeding groove; the outer wall of the seeding ball contacts and cooperates with the lower end of the material guide, and when the seeding ball rotates, the soybean seeds in the seeding groove rotate accordingly. Until the seeding ball rotates 180 degrees, the soybean seeds in the seeding groove fall under their own weight. At this time, the second seeding groove rotates to the top and is connected to the tapered through hole of the material guide. In this way, every time the seeding ball rotates 180 degrees, a soybean seed enters the seeding groove above, and a soybean seed falls from the seeding groove below.

[0030] When the punch rod moves upward, the clamp rod is driven to swing, thereby unloading the soybean seeds; when the punch rod moves downward, the clamp rod should be gradually reset; and after the clamp rod is reset, at the latest when the punch rod moves downward to the initial position, the seed ball should be rotated 180 degrees so that a soybean seed falls on the lower end of the clamp rod. To achieve this goal, Figure 3 As shown, a rack 65 is fixed on the outer wall of the punching rod. Figure 6 As shown, a small gear 64 and a large gear 6 are rotatably mounted on the outer wall of the seeding rod, wherein the large gear is coaxially arranged with the seeding ball, and damping members are arranged between the small gear and the seeding rod, and between the large gear and the seeding rod. Under the action of the damping members, the small gear and the seeding rod, and the large gear and the seeding rod cannot rotate at will. Figure 5 As shown, a plurality of teeth 7 are provided at one end of the rack. The teeth are not fixedly connected to the rack and manufactured as one piece. Instead, a plurality of evenly arranged slide grooves 66 are provided on the rack. The teeth are slidably arranged in the slide grooves. A second spring 73 is provided between the teeth and the inner wall of the slide groove. Under the action of the second spring, the active end of the teeth extends out of the slide groove. Figure 7As shown, the difference between the teeth on the rack and the teeth on the gear and rack in the prior art is that: a rounded corner 71 is provided on one side of the tooth 7, and a slider 72 is fixed on the tooth, which is slidably connected with the slide groove, and the rack is vertically installed on the punching rod, and the side of the tooth 7 with the rounded corner faces upward. When the punching rod moves up relative to the seeding rod, the rounded corner position on the tooth first contacts the pinion gear. Since the friction between the pinion gear and the damping member is greater than the force of the rack on the gear, the pinion gear squeezes the teeth on the rack to move inside the slide groove, and then the teeth on the rack and the teeth on the pinion gear do not mesh, causing the rack to move and the pinion gear not to rotate. When the punching rod moves down relative to the seeding rod, the force of the teeth on the rack and the teeth on the gear is greater than the friction between the pinion gear and the damping member. At this time, the pinion gear rotates, and the number of teeth on the rack just makes the large gear rotate 180 degrees. The rack, the pinion gear, the large gear and the seeding ball constitute a obtaining mechanism that allows the soybean seeds in the seeding rod to fall into the punching rod one by one.

[0031] During the movement of the seed drill frame, when the ground is uneven, for example, the ground where the seed drill is located is high on the left and low on the right, the left end of the first fixed axis is high and the right end is low, and the left end of the hanging plate is high and the right end is low. At this time, the retaining plate rotates around the second fixed axis, and an acute angle is formed between the retaining plate and the right end of the first fixed axis, so that the retaining plate is still in a vertical state.

[0032] During the movement of the seeder frame, when the ground is uneven, for example, the ground where the seeder is located is low on the left and high on the right, the left end of the first fixed axis is low and high on the right, and the left end of the hanging plate is low and high on the right. At this time, the retaining plate rotates around the second fixed axis, and an acute angle is formed between the retaining plate and the left end of the first fixed axis, so that the retaining plate is still in a vertical state, thereby providing a guarantee for precise sowing.

[0033] During the movement of the seeder frame, when the ground is uneven, for example, when the ground where the seeder is located is high in the front and low in the back, the hanging plate rotates around the first fixed axis to keep the plate in a vertical state.

[0034] When the ground is uneven during the movement of the seeder frame, for example, the ground on which the seeder is located is low in the front and high in the back, the hanging plate rotates around the first fixed axis to keep the holding plate in a vertical state. The holding plate is always in a vertical state or a nearly vertical state, which can ensure that the soil hole dug during sowing is a vertical hole and the soybean seeds are located at the lowest point of the soil hole.

[0035] When the ground is uneven, in order to prevent the retaining plate from moving too far, spring plates 8 are provided on the left and right sides of the retaining plate, the spring plates are fixedly connected to the planter frame, and a third spring 81 is fixed on the spring plates, and the third spring is used to contact the retaining plate. When the retaining plate rotates around the second fixed axis with a large amplitude, the retaining plate contacts the third spring, which acts as a limit to the retaining plate, preventing the retaining plate from swinging continuously due to a large swing amplitude.

[0036] The working process of the present invention is described below:

[0037] (1) Installing the sowing unit on the seeder and placing soybean seeds in the storage box;

[0038] (2) driving the seeder frame to move; during the movement of the seeder frame, the soybean seeds in the storage box continuously enter the conveying pipe and enter the seeding rod through the conveying pipe;

[0039] (3) At the same time, the rotating wheel rotates to drive the seeding rod to drive the punching rod to move downward, and the punching rod gradually approaches the ground and contacts the ground; thereafter, under the action of the first spring, the seeding rod moves downward at a speed greater than the punching rod, and the punching rod digs a hole in the soil;

[0040] (4) When the punching rod contacts the upper end of the clamping rod, the lower ends of the two clamping rods separate to release the soybean seeds, and the soybean seeds fall into the soil hole; during this process, the rack moves upward, and all the teeth on the rack move to the top of the pinion;

[0041] (5) After the seed taking rod moves down to the maximum stroke, it starts to move in the opposite direction until the punching rod is located below the upper end of the clamping rod, and the magnet at the lower end of the clamping rod is attracted together again; as the punching rod continues to move upward, the small gear starts to move upward relative to the rack, and the small gear rotates, driving the large gear to rotate and the seed taking ball to rotate until the first spring returns to its original state, and the seed taking ball rotates 180 degrees. At this time, the seed taking ball obtains a soybean seed from the seed taking rod and throws it down, and the thrown soybean seed falls on the lower end of the clamping rod. This is one working cycle.

[0042] The present invention provides a soybean seeder that can achieve precise sowing. When encountering uneven ground, the hanging plate rotates around the first fixed axis or / and the retaining plate rotates around the second fixed axis under the action of its own weight, so that the retaining plate is in a vertical state; when the retaining plate is in a vertical state, the seed taking rod and the punching rod are also in a vertical state, so that the punching rod can punch vertical soil holes on the ground, and the soybean seeds can enter the bottom of the soil holes along the punching rod, thereby achieving precise sowing.

Claims

1. A soybean planter capable of achieving precision sowing, comprising a planter frame and a sowing unit, characterized in that: The sowing unit comprises a first fixed shaft rotatably mounted on a seeder frame, a hanging plate rotatably connected to the first fixed shaft, a second fixed shaft rotatably mounted on the hanging plate and arranged perpendicularly to the first fixed shaft, a holding plate rotatably mounted on the second fixed shaft, a hollow seeding rod slidably mounted on the holding plate, a storage box connected to the seeding rod through a conveying pipe, a hollow punching rod slidably connected to the seeding rod, a first spring arranged between the punching rod and the seeding rod, and a driving mechanism for driving the seeding rod to reciprocate up and down, wherein the seeding rod is provided with a obtaining mechanism for allowing soybean seeds to fall into the punching rod one by one; The acquisition mechanism includes a seeding ball rotatably installed in the inner cavity of the seeding rod, a large gear coaxially arranged with the seeding ball and located outside the seeding rod, a small gear arranged outside the seeding rod and meshing with the large gear, and a rack fixed on the outer wall of the punching rod. The rack is provided with teeth, and when the gear moves downward relative to the rack, the teeth on the rack and the teeth on the gear are in a non-meshing state, and when the gear moves upward relative to the rack, the teeth on the rack and the teeth on the gear are in a meshing state. A pair of seeding grooves are provided on the outer wall of the seeding ball, and a plurality of sliding grooves are provided on the rack. The teeth on the rack slide with the sliding grooves. A second spring is provided between the tooth and the bottom of the slide groove, a rounded corner is provided on one side of the tooth, a notch is provided on the side wall of the lower end of the seed taking rod, a hinge shaft is rotatably installed in the notch, a clamping rod is fixed on the hinge shaft, a magnet is provided at the lower end of the clamping rod, when the magnets on the two clamping rods are adsorbed together, the upper end of the clamping rod extends out of the notch for a section, a fixing plate is fixed on the outer wall of the seed taking rod, the upper end of the first spring is fixedly connected to the fixing plate, a material guide is provided on the inner side of the seed taking rod, a tapered through hole is provided on the material guide, and the bottom of the material guide contacts the outer wall of the seed taking ball.

2. A soybean planter capable of achieving precision sowing according to claim 1, characterized in that: A guide rail is arranged on the front end surface of the holding plate, and the seed taking rod is slidably arranged on the guide rail.

3. A soybean planter capable of achieving precision sowing according to claim 1, characterized in that: The driving mechanism includes a rotating wheel rotatably mounted on a retaining plate, a crank fixed on the rotating wheel, and a connecting rod arranged between the crank and a seed taking rod. The rotating wheel is driven to rotate by a motor or connected to a traveling mechanism on a seeder frame through a transmission mechanism.

4. A soybean planter capable of achieving precision sowing according to claim 1, characterized in that: A pipe clamp for clamping the conveying pipe is arranged on the retaining plate.

5. The soybean planter capable of achieving precision sowing according to claim 1, characterized in that: Spring plates fixedly connected to the seed drill frame are respectively arranged on the left and right sides of the retaining plate, and a third spring is fixed on the spring plate.

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