A seeder for vegetable planting

Abstract

The invention discloses a seed drill for vegetable planting, comprising a seed box, a seeding tube, a lifting arm and a soil opener; the seed box bottom is movably matched with the upper port of the seeding tube through a seeding tube and is connected to each other, and the seeding tube is vertically slidably installed on the lifting arm along its axial direction; the soil opener is arranged at the lower port of the seeding tube; a connecting rod mechanism is connected between the lifting arm and the soil opener; a switch device is arranged in the seeding tube, and the switch device comprises an inner core body and an outer core body, and the outer core body is slidably sleeved on the side wall of the inner core body; a flow channel is arranged in the inner core body, and the flow channel has at least one first flow channel opening and a second flow channel opening, the first flow channel opening is located above the second flow channel opening, and the first flow channel opening and the second flow channel opening are both opened on the side wall of the inner core body; the outer core body is connected to the seeding tube through a connecting piece. The seeding and sowing actions of the vegetable planting seed drill are coherent and well linked, and quantitative sowing can be completed, and the sowing rate is easy to control, which can improve the vegetable planting efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of vegetable planting, and in particular to a seeder for vegetable planting. Background Art

[0002] With the development of mechanized agricultural production, more and more agricultural machinery and equipment have appeared on the market, which has liberated farmers' hands and greatly improved production efficiency. Vegetable seeder is one of them. Vegetable seeder integrates ditching, sowing and compaction, which greatly increases the efficiency of vegetable sowing.

[0003] The current vegetable planting equipment has a rolling seeding wheel with multiple seeding ports at intervals on the circumference of the seeding wheel, and the seeding is carried out by being pulled forward by a tractor. This kind of planting equipment generally has the following defects: the planting equipment is very easy to get blocked; the seeding wheel is easy to get stuck, the linkage between the seeding wheel and the seeding port is poor, the seeding rate is average, and often the seeds cannot be planted in the seed hole; the planting equipment needs to be covered with soil manually after planting, which has poor functionality, is time-consuming and labor-intensive; the planting interval of the planting equipment is fixed, and the requirements of different planting densities cannot be met, and the sowing efficiency is average. Summary of the invention

[0004] In order to solve the technical problems existing in the background technology, the present invention provides a seeder for vegetable planting.

[0005] The present invention provides a seeder for vegetable planting, comprising a seed box, a seeding tube, a lifting arm and a soil opener; the bottom of the seed box is movably matched with an upper end of the seeding tube through a seeding tube and is connected to each other, and a switch device is arranged in the seeding tube; the seeding tube is fixed to the lifting arm through a rigid member; the seeding tube is vertically slidably mounted on the lifting arm along its axial direction;

[0006] The soil opener is arranged at the lower end of the sowing tube; a connecting rod mechanism is connected between the lifting arm and the soil opener, and when the sowing tube slides downward relative to the lifting arm, the soil opener can be driven to rotate and open through the connecting rod mechanism, and when the sowing tube slides upward relative to the lifting arm, the soil opener can be driven to rotate and close through the connecting rod mechanism; the soil opener rotates and opens to open a seed hole in the soil and open the lower end of the sowing tube to allow the seeds to fall into the seed hole, and the soil opener rotates and closes to close the lower end of the sowing tube;

[0007] The switch device comprises an inner core and an outer core, wherein the inner core is fixedly mounted in the seeding tube, the outer core is slidably sleeved on the side wall of the inner core, and the outer wall of the outer core is slidably matched with the inner wall of the seeding tube;

[0008] A flow channel is provided in the inner core, and the flow channel has at least one first flow channel opening and one second flow channel opening, the first flow channel opening is located above the second flow channel opening, and the first flow channel opening and the second flow channel opening are both opened on the side wall of the inner core;

[0009] The outer core is connected to the sowing tube through a connecting piece, and the connecting piece is used to make the outer core and the sowing tube rise and fall synchronously;

[0010] When the sowing tube slides downward relative to the lifting arm, the outer core body can be driven to slide to a position covering the second flow channel opening through the connecting piece, and the first flow channel opening is connected to the seed box;

[0011] When the sowing tube slides upward relative to the lifting arm, the outer core body can be driven to slide to a position covering the first flow channel opening through the connecting piece, and the second flow channel opening is communicated with the lower end port of the seed outlet tube.

[0012] Preferably, a first fixing block is fixed to the upper end of the inner core, and a second fixing block is fixed to the lower end of the inner core. Both the first fixing block and the second fixing block are fixed to the inner wall of the seed tube.

[0013] Preferably, a V-shaped notch is provided at the upper end of the outer core body, and an inclined surface is provided at the upper end of the first fixing block, and the lowest edge of the inclined surface and the V-shaped notch faces the side wall of the inner core body where the first flow channel opening is located.

[0014] Preferably, the connecting piece is a core control rod fixed to the circumferential outer wall of the outer core, an opening groove cooperating with the core control rod is provided on the wall of the seed tube, and the core control rod passes through the opening groove to the outside of the seed tube.

[0015] Preferably, the connecting member is a connecting portion provided to the bottom end of the outer core and extending downward.

[0016] Preferably, a box cover is hingedly mounted on the seed box.

[0017] Preferably, the opener consists of at least two pointed heads that can be assembled into a cone, the connecting rod mechanism includes a connecting rod and a push rod, one end of the push rod is rotatably connected to one end of the connecting rod, the other end of the push rod is rotatably mounted on the lifting arm, the other end of the connecting rod is fixed to the pointed head, and the connecting rod body is rotatably mounted on the sowing tube.

[0018] Preferably, a shovel body is fixed on the outside of the pointed head, and when the pointed heads are assembled into a cone, the shovel body can be combined to form a cover body; the inner wall of the cover body surrounded by the shovel body gradually decreases from its lower end to the upper end; the upper end of the cover body surrounded by the shovel body is provided with an opening, and the openings are arranged at intervals along the circumference of the cover body.

[0019] Preferably, a first limiting ring and a second limiting ring are fixed at intervals on the outer wall of the sowing tube from the upper end to the lower end, the lifting arm is located between the first limiting ring and the second limiting ring, and the first limiting ring and the second limiting ring are used to limit the relative sliding stroke of the sowing tube and the lifting arm; a pressure spring is mounted on the sowing tube, and the pressure spring is clamped between the first limiting ring and the lifting arm.

[0020] Preferably, an annular flange is provided on the outer wall of the sowing tube, and a threaded through hole is provided on the annular flange.

[0021] The vegetable planting seeder of the present invention is linked to the switch device through a seeding tube. When the seeding tube and the lifting arm slide relative to each other to drive the opener to open for sowing, the switch device is synchronously driven to replenish seeds into the flow channel. When the opener is closed after sowing, the switch device transports the seeds buffered in the flow channel to the seeding tube. The seeding and sowing actions of the seeder are continuous and well linked, quantitative sowing can be completed, and the sowing rate is easy to control, which can improve the vegetable planting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of an integrated sowing device for vegetable planting proposed in an embodiment of the present invention;

[0023] Figure 2 A three-dimensional schematic diagram of the integrated seeding device when the soil opener is just opened;

[0024] Figure 3 is a three-dimensional schematic diagram of a sowing device proposed in an embodiment;

[0025] Figure 4 for Figure 3 Schematic diagram of the middle tip when it is open;

[0026] Figure 5 It is a three-dimensional schematic diagram of a second implementation mode of the sowing device proposed in the embodiment;

[0027] Figure 6 for Figure 5 Schematic diagram of the middle tip and the spade body when opened;

[0028] Figure 7 It is a three-dimensional schematic diagram of the seeding device proposed in the embodiment;

[0029] Figure 8 A three-dimensional schematic diagram of a seeder formed by combining a sowing device and a seed discharging device;

[0030] Fig. 9 for Figure 8 A partial cross-sectional view of the middle seeder when the second flow channel opening is connected;

[0031] Fig.10 for Figure 8 A partial cross-sectional view of the middle seeder when the first flow channel opening is connected;

[0032] Fig.11 for Figure 2 A three-dimensional schematic diagram of the integrated seeding equipment from the left front view;

[0033] Fig.12 It is a three-dimensional schematic diagram of the integrated seeding equipment when the eccentric shaft of the eccentric wheel rotates to the lowest point;

[0034] Fig.13It is a schematic diagram of the working state changes of the integrated sowing device in the embodiment of the present invention during the seed sowing process. DETAILED DESCRIPTION

[0035] Please refer to Figure 1-13 As shown, this embodiment proposes an integrated seeding device for vegetable planting, including a traction frame 1, a seeding device and a seeding device; the traction frame 1 is used to connect the seeding device to a tractor so that the tractor can tow it for operation. A lifting guide mechanism is fixed on the traction frame 1, and a lifting frame 13 and a pressing drive frame 18 are vertically slidably mounted on the lifting guide mechanism, and the lifting frame 13 and the pressing drive frame 18 are horizontally arranged, and the pressing drive frame 18 is arranged above the lifting frame 13;

[0036] Among them, a plurality of seeding devices and sowing devices are fixedly installed on the lifting frame 13 at horizontal intervals through rigid parts, and the seeding devices are arranged above the sowing devices one by one; the seeding devices and the sowing devices are respectively connected to the pressing drive frame 18;

[0037] The traction frame 1 is provided with a lifting drive mechanism for driving the lifting frame 13 to reciprocate up and down;

[0038] The traction frame 1 is provided with a pressing driving mechanism for driving the pressing driving frame 18 to intermittently move downward; an elastic reset mechanism is provided below the pressing driving frame 18;

[0039] The lifting frame 13 can drive the sowing device to intermittently break the soil by reciprocating up and down motion; the pressing driving frame 18 can drive the seeding device to intermittently transport seeds to the sowing device, and the pressing driving frame 18 can drive the sowing device to intermittently open seed holes, sow seeds and fill soil.

[0040] The integrated seeding equipment for vegetable planting can complete the four planting steps of breaking the soil, digging holes, sowing and covering the soil in an integrated manner. It can plant multiple ridges simultaneously and control the planting interval distance, so the planting effect is good and the work efficiency is high.

[0041] Among them, Figure 3-4 As shown, the sowing device includes a sowing tube 2, a lifting arm 3 and a soil opener; the sowing tube 2 is installed on the lifting arm 3 along its axial direction and vertically slides; the soil opener is arranged at the lower end of the sowing tube 2 and is used to break the soil; a connecting rod mechanism is connected between the lifting arm 3 and the soil opener; when the sowing tube 2 and the lifting arm 3 slide relative to each other, the soil opener is driven to rotate and open or rotate and close through the connecting rod mechanism; the soil opener rotates and opens to open a seed hole in the soil and opens the lower end of the sowing tube 2 to allow the seeds to fall into the seed hole; the soil opener rotates and closes to close the lower end of the sowing tube 2.

[0042] Specifically, the lifting arm 3 is a hollow cylindrical sleeve structure with two ends connected, and the lifting arm 3 is sleeved outside the sowing tube 2. The outer wall of the sowing tube 2 is provided with an annular flange 203, and the annular flange 203 is provided with a threaded through hole. The outer wall of the sowing tube 2 is fixed with a first limiting ring 201 and a second limiting ring 202 from top to bottom, and the lifting arm 3 is located between the first limiting ring 201 and the second limiting ring 202. The first limiting ring 201 and the second limiting ring 202 are used to limit the relative sliding stroke of the sowing tube 2 and the lifting arm 3, and at the same time, the sowing tube 2 can move up and down following the lifting arm 3.

[0043] A pressure spring 8 is mounted on the sowing pipe 2, and the pressure spring 8 is clamped between the first limiting ring 101 and the lifting arm 3. The pressure spring 8 is used to provide an upward elastic force to the sowing pipe 2 when the lifting arm 3 rises.

[0044] Among them, the opener is composed of at least two pointed heads 4 that can be assembled into a cone, the connecting rod mechanism includes a connecting rod 5 and a push rod 6, one end of the push rod 6 is rotatably connected to one end of the connecting rod 5, the other end of the push rod 6 is rotatably installed on the lifting arm 3, the other end of the connecting rod 5 is fixed to the pointed head 4, and the connecting rod 5 is rotatably installed on the sowing tube 2. The push rod 6 drives the connecting rod 5 to rotate so that the pointed head 4 rotates around the rotation axis of the connecting rod 5 to gather and close toward the axis of the sowing tube 2 or open toward the side of the sowing tube 2.

[0045] In actual work, since the soil after ridge formation is generally loose, after the pointed head 4 is used to sow, the loose soil will generally automatically cover the seeds. However, in order to ensure that the seeds after sowing are better buried, such as Figure 5-6 As shown, this embodiment further improves the soil opener and proposes a second embodiment of the sowing device, which is different from the first embodiment in that a shovel body 7 is fixed outside the pointed head 4, and when the pointed heads 4 are gathered together to form a cone, the shovel body 7 can be surrounded to form a cover. The shovel body 7 that can form a cover allows the soil to be gathered to the middle when the soil opener leaves the soil after sowing, so that the seeds in the seed hole are buried by the soil.

[0046] Furthermore, the inner wall of the cover body surrounded by the shovel body 7 gradually decreases from the lower end to the upper end, and the cover body is a cone with a small upper end and a large lower end, and the inner wall of the cone-shaped cover body is a cone surface. When the tip 4 and the shovel body 7 leave the soil, the soil can fall from the cover body more smoothly.

[0047] The upper end of the cover body surrounded by the shovel body 7 is provided with openings 701, and the openings 701 are arranged at intervals along the circumference of the cover body. The purpose of providing the openings 701 is to allow the excess soil in the cover body to come out from the openings 701 when the shovel body 7 is inserted into the soil, thereby reducing the resistance of the soil and making it easier to insert into the soil. Similarly, the lower end of the shovel body 7 is in the shape of a thin-walled blade, which is easier to insert into the soil.

[0048] Please refer to Figure 7-10As shown, the seeding device includes a seed box 9, which is made of transparent plastic material, so that the remaining amount of seeds can be easily observed. A box cover 901 is hingedly installed on the seed box 9, and a seeding tube 902 is connected to the bottom of the seed box 9. The seeding tube 902 can be integrally connected to the seed box 9 or detachably installed together. A switch device 10 is provided in the seeding tube 902, and the switch device 10 is used to intermittently output seeds from the lower port of the seeding tube 902. The lower port of the seeding tube 902 of the seeding device is movably matched with the upper port of the sowing tube 2 of the sowing device and is connected to each other.

[0049] Specifically, the switch device 10 includes an inner core body 1001 and an outer core body 1002, the inner core body 1001 is fixedly installed in the seed outlet tube 902, the outer core body 1002 is slidably sleeved on the side wall of the inner core body 1001, and the outer wall of the outer core body 1002 is slidably matched with the inner wall of the seed outlet tube 902; a flow channel 1003 is provided in the inner core body 1001, and the flow channel 1003 has at least one first flow channel opening and one second flow channel opening, the first flow channel opening is located above the second flow channel opening, and the first flow channel opening and the second flow channel opening are both opened on the side wall of the inner core body 1001; when the outer core body 1002 slides to the position of the first flow channel opening that shields the flow channel 1003, the second flow channel opening of the flow channel 1003 is connected to the lower port of the seed outlet tube 902; when the outer core body 1002 slides to the position of the second flow channel opening that shields the flow channel 1003, the first flow channel opening of the flow channel 1003 is connected to the seed box 9.

[0050] A first fixing block 1004 is fixed to the upper end of the inner core 1001 , and a second fixing block 1005 is fixed to the lower end of the inner core 1001 . Both the first fixing block 1004 and the second fixing block 1005 are fixed to the inner wall of the seed outlet tube 902 .

[0051] A V-shaped notch is provided at the upper end of the outer core 1002, and an inclined surface is provided at the upper end of the first fixing block 1004, the inclined surface and the lowest edge of the V-shaped notch face the side wall of the inner core 1001 where the first flow channel opening is located. The V-shaped notch and the inclined surface at the upper end of the first fixing block 1004 enable the seeds to flow into the flow channel 1003 more smoothly without causing the problem of getting stuck.

[0052] Furthermore, in order to control the switch device 10 to intermittently output seeds to the sowing device, so that the sowing device and the seeding device form a sowing device that can act synchronously, a first connecting member is also provided on the outer core 1002. The first connecting member is a core control rod 1006 fixed to the circumferential outer wall of the outer core 1002, and an opening groove 1007 that cooperates with the core control rod 1006 is provided on the wall of the seeding tube 902, and the core control rod 1006 passes through the opening groove 1007 to the outside of the seeding tube 902. The core control rod 1006 can be connected to the seeding tube 902 or the pressing drive frame 18.

[0053] This embodiment also provides a second implementation of the second connecting member, in which a connecting portion 1008 extending downward is provided at the bottom of the outer core 1002, and the bottom of the connecting portion 1008 is connected to the sowing tube 2 of the sowing device. Since the upper end of the sowing tube 2 and the lower end of the seeding tube 902 are movably matched, as long as the second connecting member can make the outer core 1002 and the sowing tube 2 rise and fall synchronously, that is, when the sowing tube 2 moves up and down, it can synchronously drive the outer core 1002 to slide up and down through the second connecting member.

[0054] like Figure 1 , Figure 2 , Fig.11 , Fig.12 and Fig.13 As shown, the lifting guide mechanism includes a fixing frame 11 fixed on the traction frame 1 and a guide rod 12 vertically installed on the fixing frame 11. The number of the fixing frame 11 and the guide rod 12 is at least two.

[0055] The lifting frame 13 is slidably mounted on the guide rod 12 of the lifting guide mechanism. The rigid member on which the seeding device and the sowing device are mounted on the lifting frame 13 is a fixed frame. The fixed frames are fixed at intervals horizontally. A seeding device and a sowing device are fixed on each fixed frame in sequence from top to bottom. The fixed frame has a support plate 1301. A fixing card 1303 and a flange plate 1302 are fixed at two opposite ends of the support plate 1301. The fixing card 1303 is fixedly mounted on the lifting frame 13. The fixing card 1303 and the lifting frame 13 clamp and fix the lifting arm 3 of the sowing device. The seeding tube 902 of the seeding device is fixedly mounted on the flange plate 1302.

[0056] Among them, the lifting drive mechanism includes a power main shaft 15, an eccentric wheel 16, and a grooved guide rail 17. The power main shaft 15 is rotatably installed on the traction frame 1, and the grooved guide rail 17 is horizontally fixed on the lifting frame 13; the eccentric wheel 16 is fixedly installed at one end of the power main shaft 15, and the eccentric wheel 16 has an eccentrically arranged eccentric shaft, and the eccentric wheel 16 is transmitted and matched with the grooved guide rail 17 through the eccentric shaft.

[0057] The power main shaft 15 can be connected to the output shaft of the tractor. In actual applications, the tractor output shaft may be connected to a soil ridging device and cannot be connected to the power main shaft 15. Therefore, the power main shaft 15 can also be connected to a power drive motor 14 separately.

[0058] When the lifting drive mechanism is working, the power main shaft 15 drives the eccentric wheel 16 to rotate, and the eccentric wheel 16 drives the lifting frame 13 to reciprocate up and down through the eccentric shaft sliding back and forth in the groove guide rail 17, thereby driving the sowing device to reciprocate up and down. As the tractor is pulled forward at a uniform speed, the opener at the bottom of the sowing device can be reciprocated and inserted into the soil to open equally spaced seed holes.

[0059] The pressing drive frame 18 is also slidably mounted on the guide rod 12 of the lifting guide mechanism, and the pressing drive frame 18 is horizontally arranged. A plurality of flanges 1801 are fixed horizontally at intervals on the pressing drive frame 18, and the flanges 1801 are used to fix the sowing tube 2 of the sowing device, and the flanges 1801 are fixed one by one with the annular flange 203 of the sowing tube 2.

[0060] The elastic reset mechanism disposed below the pressing drive frame 18 is a reset spring 19 , and the reset spring 19 is sleeved on the guide rod 12 located between the pressing drive frame 18 and the lifting frame 13 .

[0061] The pressing drive mechanism includes a rotating shaft 20, a rocker arm 21 and a pressing head 22. The rotating shaft 20 is rotatably mounted on the traction frame 1, the rocker arm 21 is fixed at one end of the rotating shaft 20, the pressing head 22 is fixed on the rocker arm 21, and the pressing head 22 is eccentrically arranged relative to the rotating shaft 20. The turning radius of the pressing head 22 is greater than the turning radius of the eccentric shaft of the eccentric wheel 16, and the difference between the two turning radii is equal to the stroke of relative sliding between the sowing tube 2 and the lifting arm 3 during the opening and closing process of the soil opener. The pressing head 22 is used to push the pressing drive frame 18 downward when it rotates to a low position.

[0062] Furthermore, the rotating shaft 20 and the power main shaft 15 are preferably connected by a sprocket and a transmission chain, so that the rotating shaft 20 and the power main shaft 15 can rotate synchronously. In addition, the transmission ratio of the rotating shaft 20 to the power main shaft 15 is 1:1. The rotating shaft 20 can also be connected to a reducer for driving.

[0063] When the pressing drive mechanism is working, the rotating shaft 20 drives the rocker arm 21 and the pressing head 22 to rotate. Only when the pressing head 22 rotates to a low position, the pressing head 22 contacts the pressing drive frame 18 and pushes the pressing drive frame 18 downward.

[0064] Based on the above content, the working principle of the integrated sowing device for vegetable planting in the specific working process of this embodiment is specifically described below:

[0065] The first stage: during operation, the tractor drives the entire sowing equipment forward through the traction frame 1, and the power main shaft 15 of the lifting drive mechanism drives the eccentric wheel 16 to rotate. In the process of the eccentric shaft of the eccentric wheel 16 rotating from the highest point to the low position, the eccentric shaft drives the lifting frame 13 to descend through the grooved guide rail 17, and the lifting frame 13 descends with the lifting arm 3 and the sowing tube 2 installed thereon, so that the soil opener at the bottom of the sowing tube 2 is inserted into the soil.

[0066] The second stage: during the process of the eccentric shaft of the eccentric wheel 16 continuing to rotate from the low position to the lowest point, the soil opener is inserted into the soil and continues to descend. At the same time, the rotating shaft 20 of the pressing drive mechanism synchronously drives the pressing head 22 to rotate from the low position to the lowest point. Since the rotation radius of the pressing head 22 is greater than the rotation radius of the eccentric shaft, the pressing head 22 at this time contacts the pressing drive frame 18 and pushes the pressing drive frame 18 to move downward. The pressing drive frame 18 descends with the sowing tube 2 and the core control rod 1006 connected thereto to reach the following state: 1. The sowing tube 2 and the lifting arm 3 slide relative to each other, thereby driving the soil opener to open, dig the soil to form a seed hole, and open the lower port of the sowing tube 2 to allow the seeds in the tube to fall into the seed hole; 2. The core control rod 1006 drives the outer core 1002 to slide from top to bottom to close the second flow channel and open the first flow channel, and the seeds in the seed box 9 fall from the first flow channel to the flow channel 1003.

[0067] The third stage: the eccentric shaft of the eccentric wheel 16 rotates from the lowest point to a slightly higher low position, driving the lifting frame 13 to start rising, and the pressure spring 8 on the lifting arm 3 and the reset spring 19 on the lifting frame 13 provide upward elastic force, so that the sowing tube 2 and the pressing drive frame 18 also move upward, but the opener has not completely left the soil during this process. At the same time, the rotating shaft 20 synchronously drives the pressing head 22 to rotate from the lowest point to a slightly higher low position. During this process, the pressing drive frame 18 still rests on the lower end of the pressing head 22 under the action of elastic force. Only when the pressing head 22 continues to rotate upward and separates from the pressing drive frame 18 again, the pressing drive frame 18 and the sowing tube 2 can be completely reset and the opener can be closed again. Therefore, the opener at this stage is in a state of rising and slowly closing. It is worth mentioning that during the closing process of the opener, the soil in the shovel body 7 accumulates to the middle again, and as the opener rises, the soil inside the shovel body 7 will fall, thereby playing the role of covering the seed hole with soil again.

[0068] The fourth stage: as the eccentric shaft of the eccentric wheel 16 and the pressing head 22 continue to rotate upward, the pressing head 22 is completely separated from the pressing drive frame 18, the pressing drive frame 18 and the sowing tube 2 are completely reset and the opener is closed again. At the same time, the pressing drive frame 18 drives the core control rod 1006 to drive the outer core 1002 to slide from bottom to top to the position where the first flow channel is closed. At this time, the second flow channel is opened, and the seeds in the flow channel 1003 flow into the sowing tube 2 again to prepare for the next planting.

[0069] The fifth stage: the eccentric shaft of the eccentric wheel 16 returns to the highest point, at which time the lifting arm 3 and the sowing tube 2 have completely left the soil and returned to the highest position, completing the four steps of breaking the soil, digging holes, sowing, and covering the soil. As the tractor moves forward, when the next planting is carried out, the two planting positions have been separated by a distance. The above steps are repeated to complete the entire planting work.

[0070] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A seeder for vegetable planting, characterized in that: The invention comprises a seed box (9), a sowing tube (2), a lifting arm (3) and a soil opener; the bottom of the seed box (9) is movably matched with the upper end of the sowing tube (2) through a seed outlet tube (902) and is connected to each other, and a switch device (10) is provided in the seed outlet tube (902); the seed outlet tube (902) and the lifting arm (3) are fixed by a rigid member; the sowing tube (2) is vertically slidably mounted on the lifting arm (3) along its axial direction; The soil opener is arranged at the lower end of the sowing tube (2); a connecting rod mechanism is connected between the lifting arm (3) and the soil opener; when the sowing tube (2) slides downward relative to the lifting arm (3), the soil opener is driven to rotate and open through the connecting rod mechanism; when the sowing tube (2) slides upward relative to the lifting arm (3), the soil opener is driven to rotate and close through the connecting rod mechanism; the soil opener rotates and opens to open a seed hole in the soil and opens the lower end of the sowing tube (2) so that the seeds fall into the seed hole; the soil opener rotates and closes to close the lower end of the sowing tube (2); The switch device (10) comprises an inner core (1001) and an outer core (1002); the inner core (1001) is fixedly mounted in a seeding tube (902); the outer core (1002) is slidably sleeved on a side wall of the inner core (1001); and the outer wall of the outer core (1002) is slidably matched with the inner wall of the seeding tube (902); A flow channel (1003) is provided in the inner core (1001), the flow channel (1003) having at least one first flow channel opening and one second flow channel opening, the first flow channel opening being located above the second flow channel opening, and the first flow channel opening and the second flow channel opening are both opened on the side wall of the inner core (1001); The outer core (1002) is connected to the sowing tube (2) via a first connecting piece and a second connecting piece, and the first connecting piece and the second connecting piece are used to enable the outer core (1002) and the sowing tube (2) to rise and fall synchronously; When the sowing tube (2) slides downward relative to the lifting arm (3), the outer core (1002) is driven to slide to a position covering the second flow channel opening through the first connecting member and the second connecting member, and the first flow channel opening is connected to the seed box (9); When the sowing tube (2) slides upward relative to the lifting arm (3), the outer core (1002) is driven to slide to a position covering the first flow channel opening through the first connecting member and the second connecting member, and the second flow channel opening is communicated with the lower end of the seed outlet tube (902); A first fixing block (1004) is fixed to the upper end of the inner core (1001), and a second fixing block (1005) is fixed to the lower end of the inner core (1001); the first fixing block (1004) and the second fixing block (1005) are both fixed to the inner wall of the seed outlet tube (902); The upper end of the outer core (1002) is provided with a V-shaped notch, and the upper end of the first fixing block (1004) is provided with an inclined surface, wherein the lowest edge of the inclined surface and the V-shaped notch faces the side wall of the inner core (1001) where the first flow channel opening is located; The first connecting member is a core body control rod (1006) fixed to the circumferential outer wall of the outer core body (1002); an opening groove (1007) cooperating with the core body control rod (1006) is provided on the wall of the seed tube (902); the core body control rod (1006) passes through the opening groove (1007) to the outside of the seed tube (902); The second connecting member is a connecting portion (1008) provided at the bottom end of the outer core (1002) and extending downward.

2. The vegetable planting seeder according to claim 1, characterized in that: A box cover (901) is hingedly mounted on the seed box (9).

3. The vegetable planting seeder according to claim 1 or 2, characterized in that: The soil opener is composed of at least two pointed heads (4) assembled into a cone, and the connecting rod mechanism comprises a connecting rod (5) and a push rod (6), one end of the push rod (6) is rotatably connected to one end of the connecting rod (5), the other end of the push rod (6) is rotatably mounted on the lifting arm (3), the other end of the connecting rod (5) is fixed to the pointed head (4), and the rod body of the connecting rod (5) is rotatably mounted on the sowing tube (2).

4. The vegetable planting seeder according to claim 3, characterized in that: A shovel body (7) is fixed outside the pointed head (4); when the pointed head (4) is assembled into a cone, the shovel body (7) encloses a cover body; the inner wall of the cover body enclosed by the shovel body (7) gradually decreases from the lower end to the upper end; the upper end of the cover body enclosed by the shovel body (7) is provided with an opening (701), and the openings (701) are arranged at intervals along the circumference of the cover body.

5. The vegetable planting seeder according to claim 4, characterized in that: A first limiting ring (201) and a second limiting ring (202) are fixed at intervals on the outer wall of the sowing tube (2) from the upper end to the lower end; the lifting arm (3) is located between the first limiting ring (201) and the second limiting ring (202); the first limiting ring (201) and the second limiting ring (202) are used to limit the relative sliding stroke of the sowing tube (2) and the lifting arm (3); a pressure spring (8) is sleeved on the sowing tube (2), and the pressure spring (8) is clamped between the first limiting ring (201) and the lifting arm (3).

6. The vegetable planting seeder according to claim 5, characterized in that: An annular flange (203) is provided on the outer wall of the sowing tube (2), and a threaded through hole is provided on the annular flange (203).

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